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HomeMy WebLinkAboutPermit PL13-035 - COSTCO - GAS STATION EXPANSION DESIGN REVIEWCOSTCO FUELING FACILITY EXPANSION 541 COSTCO DRIVE PL13-035 L13-038 DESIGN REVIEW DESIGN REVIEW PUBLIC HEARING Ci � of Tukwila Jim Haggerton, Mayoror Department of Community Development Jack Pace, Director NOTICE OF DECISION TO: Barghausen Consulting Engineers, Inc., Applicant Costco Wholesale Corporation, Owner King County Assessor, Accounting Division Washington State Department of Ecology Puget Sound Clean Air Agency August 28, 2013 This letter serves as a notice of decision and is issued pursuant to TMC 18.104.170 on the following project and permit approval. I. PROJECT INFORMATION Project File Number: L13-038 (Design Review) Applicant: John Ellingsen, Barghausen Consulting Engineers, Inc. Type of Permit Applied for: Public Hearing Design Review Project Description: Public Hearing Design Review for expansion of the Tukwila Costco fueling facility to include an additional row of gasoline dispensers, a 29 -foot by 88 -foot fueling island canopy extension and associated site improvements. Location: 451 Costco Drive, parcel #3623049107 Associated Files: PL13-035 (Land Use Project File), PRE13-007 (pre -application file) Comprehensive Plan Designation/Zoning District: Tukwila Urban Center (TUC) II. DECISION SEPA Determination: The City SEPA Responsible Official has determined that this application does not require a SEPA threshold determination because it is categorically exempt. Decision on Substantive Permit: The City Board of Architectural Review has determined that the application for a Public Hearing Design Review does comply with applicable City and state code requirements and has approved that application based on the findings and conclusions contained in the staff report, subject to any conditions which are set forth in the Decision. At the public hearing, the Board of Architectural Review removed condition number two in the staff report from the Decision. The Board of Architectural Review approved a 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 widened landscape strip proposed by the applicant at the hearing to allow plants to be set back from parking areas on the west and south sides of the new planting area in place of the wheelstops. III. YOUR APPEAL RIGHTS The Decision on this Permit Application is a Type 4 decision pursuant to Tukwila Municipal Code 18.104.010. Other land use applications related to this project may still be pending. One administrative appeal to the Hearing Examiner of the Board of Architectural Review Decision is permitted. No administrative appeal of a DNS or an EIS is permitted. If an MDNS was issued, any person wishing to challenge either the conditions which were imposed by the MDNS decision or the failure of the Department to impose additional conditions in the MDNS must raise such issues as part of the appeal. IV. PROCEDURES AND TIME FOR APPEALING In order to appeal the Board of Architectural Review decision on the Permit Application, a written notice of appeal must be filed with the Department of Community Development within 14 days of the issuance of this Decision, that is by Wednesday, September 11, 2013. The requirements for such appeals are set forth in Tukwila Municipal Code18.116. All appeal materials shall be submitted to the Department of Community Development. Appeal materials MUST include: 1. The name of the appealing party. 2. The address and phone number of the appealing party; and if the appealing party is a corporation, association or other group, the address and phone number of a contact person authorized to receive notices on the appealing party's behalf. 3. A statement identifying the decision being appealed and the alleged errors in the decision. 4. The Notice of Appeal shall identify (a) the specific errors of fact or errors in application of the law in the decision being appealed; (b) the harm suffered or anticipated by the appellant, and (c) the relief sought. The scope of an appeal shall be limited to matters or issues raised in the Notice of Appeal. 5. Appeal fee per the current fee schedule, additional hourly charges may apply. In addition all hearing examiner costs will be passed through to the appellant. V. APPEAL HEARINGS PROCESS The Hearing Examiner appeal shall be conducted as a closed record hearing based on the testimony and documentary evidence presented at the open record hearing conducted by the Board of Architectural Review. The Hearing Examiner decision on the appeal is the City's final decision. Any party wishing to challenge the Hearing Examiner decision on this application must file an appeal pursuant to the procedures and time limitations set forth in RCW 36.70C. An appeal challenging a DNS, an MDNS or an EIS may be included in such an appeal. If no appeal of the Hearing Examiner decision is properly filed in Superior Court within such time limit, the Decision on this permit will be final. Type 4 Permit JR Page 2 of 3 08/27/2013 11:07:00 AM H:\Design Review\Costco Gas Station\NOD_L13-038 Costco Fueiling Facility Expansion.doc VL INSPECTION OF INFORMATION ON THE APPLICATION Project materials including the application, any staff reports, and other studies related to the permits are available for inspection at the Tukwila Department of Community Development, 6300 Southcenter Blvd., Suite 100, Tukwila, Washington 98188 from Monday through Friday between 8:30 a.m. and 5:00 p.m. The project planner is Jaimie Reavis, who may be contacted at 206-431-3659 for further information. Property owners affected by this decision may request a change in valuation for their property tax purposes. Contact the King County Assessor's Office for further information regarding property tax valuation changes. D rtment of Community Development City of Tukwila Type 4 Permit JR Page 3 of 3 H:\Design Review\Costco Gas Station\NOD_L13-038 Costco Fueiling Facility Expansion.doc 08/27/2013 10:50:00 AM City of Tukwila Department of Community Development Jim Haggerton, Mayor STAFF REPORT TO THE BOARD OF ARCHITECTURAL REVIEW PREPARED August 14, 2013 HEARING DATE: August 22, 2013 FILE NUMBER: L13-038 APPLICANT: John Ellingsen, Barghausen Consulting Engineers, Inc. OWNER: Costco Wholesale Corporation Jack Pace, Director REQUEST: Public Hearing Design Review for expansion of the Tukwila Costco fueling facility to include an additional row of gasoline dispensers, a 29 -foot by 88 -foot fueling island canopy extension and associated site improvements. LOCATION: 451 Costco Drive, parcel # 3623049107 4 - NOTIFICATION: Notice of Application and Notice of Public Hearing for this Type 4 permit was mailed to the surrounding property owners, interested parties, affected agencies and posted on the site on August 7, 2013. Notice of Public Hearing was also published in the Seattle Times on August 7, 2013. ZONING/COMPREHENSIVE PLAN DESIGNATION: Tukwila Urban Center SEPA DETERMINATION: This project is exempt from State Environmental Policy Act review per WAC 197-11- 800 (2) (E) Other Minor New Construction. DECISION: Approval with Conditions STAFF: Jaimie Reavis ATTACHMENTS: A. Applicant's response to Design Review Criteria B. Plans: Site Plans, Elevations, Colored Elevation, Landscape Plan C. Materials and colors JR Page 1 of 11 H:\Design Review\Costco Gas Station\SR_L13-038 Costco Fueiling Facility Expansion.docx 08/14/2013 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206-431-3665 FINDINGS VICINITY INFORMATION The project site is located on the south side of Costco Drive, and on the west side of Sperry Drive. The project parcel is shared with the Costco Optical building to the west, including employee parking areas to the west and south of the fueling facility. The existing Costco warehouse store is directly north of the site across Costco Drive. The Green River is located to the east of the fueling facility, on the east side of Sperry Drive. The existing l iome Depot hardware store is directly south. Various one- and two-story warehouse/distribution/retail uses are located along Andover Park East to the west of the site. PROJECT INFORMATION There are currently four fueling islands, each containing two gas dispensers for a total of 16 fueling positions for vehicles at the Costco Fueling Facility. The proposal is to extend the three southern -most fueling islands to add an additional gas JR Page 2 0111 08!14/2013 fL\Design Review\Costco Gas Station\SR_L13-038 Costco Fuelling Facility Lxpansion.docx dispenser to each island, providing an additional six fueling positions. Existing signage on the canopy is proposed to be replaced by new canopy signage, which will be reviewed through separate sign permit(s). The fueling island canopy is proposed to be extended the cover the new gas dispensers. The area of the canopy extension is 29 -feet by 88 -feet. Site design changes are proposed to improve circulation within the fueling facility. Landscape areas and parking will be reconfigured to accommodate an expansion of the vehicle queuing area. Six parking spaces will be removed with the proposed reconfiguration. Some of the equipment associated with the fueling facility will be relocated to landscape areas. Costco Optical was built in 1997, as a result of subdividing the Home Depot site that is immediately to the south. The original building design was approved via a public hearing design review in October, 1996, with construction in 1997. An addition to the optical facility was approved in 2008. After a design review hearing in 1998, Costco gas station was built immediately to the east on the same lot. An extension of the gas station which included one fueling island with two dispensers and a canopy was approved in 1999 through a shoreline substantial development permit and a minor modification to the design review. PUBLIC COMMENT No public comments have been received. DESIGN REVIEW CRITERIA The project is subject to a Public Hearing Design Review under Tukwila Municipal Code (TMC) Chapter 18.28.070. The Board of Architectural Review evaluates the project under the criteria established in TMC 18.60.050 B. The design criteria explain requirements for development proposals. They are the decision criteria from which the Board will evaluate whether to approve, condition, or deny this project. The applicant's response to the design review criteria is Attachment A. Below is the staff analysis and response. 1. Relationship of Structure to Site a) The site should be planned to accomplish a desirable transition with streetscape and to provide for adequate landscaping and pedestrian movement; This project represents the expansion of an auto - oriented use. Pedestrians within the fueling facility are limited to customers in the immediate vicinity of the fueling dispensers and fueling facility employees. Pedestrian movement is accommodated around the perimeter of the fueling facility on sidewalks located on the north and east sides of the project site. These sidewalks are separated from the fueling facility by perimeter landscaping. Additional shrubs are proposed within the north and east landscape perimeter areas to fill in gaps in the existing hedge. The proposed reconfiguration of parking spaces and curbed landscape areas will provide physical separation of employee parking areas from vehicle queuing areas to help keep pedestrians out of the fueling facility area where the vehicle maneuvering and idling engines characteristic of a gas station do not create an amenable pedestrian environment. b) Parking and service areas should be located, designed and screened to moderate the visual impact of large paved areas; Existing perimeter landscaping works to screen the fueling facility from adjacent streets and properties (see pictures on the next page). Additional landscaping is proposed to provide separation between the fueling facility and the employee parking area, and will help to break up the large expanse of pavement proposed to accommodate fueling facility vehicle queuing areas for the fueling facility and employee parking areas. JR Page 3 of 11 H:\Design Review\Costco Gas Station\SR L13-038 Costco Fueiling Facility Expansion.docx 08/14/2013 East Perimeter Landscaping along Sperry North Perimeter Landscaping along Costco Dr South Perimeter Landscaping along Home Depot Property c) The height and scale of each building should be considered in relation to the site. The existing canopy is 17'6"feet in height, and the canopy expansion will match the existing height. Roofs and canopies within proximity to the project site range between 12' and 21' 4" in height. The height of the canopy expansion is much lower in height than what is allowed by the zone, and is similar in height to surrounding buildings. The 2,552 square foot canopy expansion will be added to the west side of the existing canopy, bringing the total square footage of the fueling canopy to 6,392. The area of the canopy on the west side of the northernmost fueling island will not be expanded. This will have the effect of creating modulation and reducing the scale of the canopy extension. The scale of the fueling canopy is consistent with surrounding warehouse retail and industrial buildings, including the Costco Warehouse to the north and the Home Depot to the south. 2. Relationship of Structure and Site to Adjoining Area. a) Harmony in texture, lines and masses is encouraged; The canopy extension will use the same materials and will be of the same design as the existing canopy area. The existing canopy is comprised of columns faced with a gray colored rough -textured concrete block (split -face CMU) and metal panels making up the canopy fascia. b) Appropriate landscape transition to adjoining properties should be provided; Additional shrubs are proposed along the north and east landscape perimeter to fill in areas where there are gaps in the existing landscaping. There are no other changes proposed to landscape areas on the perimeter of the project site. A new, continuously curbed landscape area is proposed which will run along the west and south side of the vehicle queuing area of the fueling facility, and will serve to separate the Costco Optical facility and pedestrians associated with the employee parking area from the fueling facility. JR Page 4 of 11 08/14/2013 H:\Design Review\Costco Gas Station \SR L13-038 Costco Fueiling Facility Expansion.docx c) Public buildings and structures should be consistent with the established neighborhood character; The project is an expansion of the existing use, and is consistent with the warehouse retail and industrial nature of the surrounding neighborhood. d) Compatibility of vehicular pedestrian circulation patterns and loading facilities in terms of safety, efficiency and convenience should be encouraged; Though the fueling facility is on the same parcel as the Costco Optical facility, a landscape area is proposed to separate the fueling facility from the optical center and help channelize traffic coming in to the fueling facility. The existing site design includes a combined entry point to the fueling station and the Costco employee parking area. The employee parking area is within 100 feet of the existing canopy, and people walking to their parked cars must currently walk within the same area where vehicles are waiting in line for gas or where vehicles are turning in to the fueling station from Costco Drive. The new curbed landscape area serves to channelize traffic into the fueling facility and to provide a barrier between pedestrians within the employee parking area and vehicles turning in to and waiting within the fueling facility. e) Compatibility of on-site vehicular circulation with street circulation should be encouraged. Vehicle access to the fueling facility is from Costco Drive on the north side of the project site. There are currently two entry driveways to the Costco Optical facility along Costco Drive; (1) the main entry -only entrance to the optical facility to the west of the fueling facility, and (2) the entry driveway to the fueling facility. The new site design will close off access to the employee parking area from the fueling facility area. Vehicles will be able to exit the optical facility using either the exit at the southwest side of the Costco Optical site connecting to the Home Depot property and on to S 180th Street, or the exit -only exit to Sperry Drive located at the southeastern corner of the project site which is combined with fueling facility exit. The existing site design includes a parking area in close vicinity to the access driveway to the fueling facility. Cars parked in this area make vehicular circulation difficult when the fueling facility is busy and vehicle waiting lines are long. Additionally, employees who park in this area and walk either to the sidewalk along Costco Drive or the entrance to the optical facility are potentially at risk/in conflict with vehicles turning from Costco Drive into the fueling facility. The vehicle queuing area is proposed to be expanded from approximately 80 feet in length to approximately 125 feet. The removal and reconfiguration of parking areas to accommodate the expansion of the vehicle queuing area along with the addition of the curbed landscape area acts to both channelize traffic, improve vehicle circulation, and provide protection to vehicles and pedestrians maneuvering within the employee parking areas. 3. Landscaping and Site Treatment. a) Where existing topographic patterns contribute to beauty and utility of a development, they should be recognized, preserved and enhanced; The existing site topography is flat and is planned to remain the same as part of this project. b) Grades of walks, parking spaces, terraces and other paved areas should promote safety and provide an inviting and stable appearance; The site topography will remain flat in grade. The new curbed landscape area includes a row of trees, along with shrubs and groundcover which will help promote an inviting entry into the fueling facility while at the same time promoting safety by keeping the entry point to the fueling facility where there is a high volume of vehicular activity away from pedestrians and slower -moving vehicles within the employee parking area. c) Landscape treatment should enhance architectural features, strengthen vistas and important axis, and provide shade; The new landscape strip area is six feet wide in the section which runs north -south, and approximately five feet wide in the section running east -west. The original plan included Acer rubrum 'Red Sunset' Maple trees, which need a lot of space and present the risk of having their roots grow out resulting in the pavement lifting. The JR Page 5 of 11 H:\Design Review\Costco Gas Station\SR_L13-038 Costco Fueiling Facility Expansion.docx 08/14/2013 landscape plan was changed to include Allee Elms (Ulmus parvifolia `Enver II'), which are better able to survive in strips as narrow as those proposed, have reduced potential for pavement lift, and provide a canopy for shade. The row of trees and shrubs proposed will act to enclose the space and provide a visual pattern to emphasize the vehicular circulation pattern within the site. d) In locations where plants will be susceptible to injury by pedestrian or motor traffic, mitigating steps should be taken; Ten parking spaces are proposed directly adjacent on the west side of the new north -south section of the curbed landscape area, and ten parking spaces are proposed directly adjacent on the south side of the east -west section of the curbed landscape area. The new landscape areas are narrow; there is no room to locate plantings a few feet away from parking areas to prevent damage from parked cars. As a condition of approval, staff recommends wheelstops be added to these 20 parking spaces to prevent damage to the plantings in the new landscaped areas. e) Where building sites limit planting, the placement of trees or shrubs in paved areas is encouraged; The Demolition Plan shows those portions of existing parking lot landscape islands that are proposed to be removed. The majority of the landscape island directly south of the entrance to the fueling facility will be demolished; a small area of the northwestern part of this island, where a light pole for parking lot lighting is located, will be retained. Directly to the south, half of another parking lot landscape island will be retained and combined with the new landscape area. To the west, an existing parking lot landscape island will be completely demolished along with an associated parking lot light pole and fixtures. A total of 1,529 square feet of landscape area is located within the project area. Changes to landscape islands will result in the removal of 76 square feet of landscaping, reducing the total landscape area within the project area to 1,453 square feet. The new landscape areas will include more trees than are currently located on the site. J) Screening of service yards, and other places that tend to be unsightly, should be accomplished by use of walls, fencing, planting or a combination; The new landscape areas proposed along the west and south sides of the fueling facility will provide screening between the fueling facility and the service area on the east side of the optical facility. Equipment located within an existing landscape island area that will be removed as part of the proposal is planned to be relocated. A vent stack is proposed to be moved to a landscape area at the south side of the fueling facility, just east of the controller enclosure. The arid permeator and associated bollards (see picture at right) will be relocated to the corner of the new landscape area. Trees and shrubs within existing and new landscape areas will provide screening of this equipment. g) In areas where general planting will not prosper, other materials such as fences, walls and pavings of wood, brick, stone or gravel may be used; The landscape plan has been reviewed with the goal of ensuring that plants within landscape areas will be able to remain healthy over time. The type of tree used within the new landscape area was changed from the original submittal per staff recommendations in order to provide room for the tree to grow and provide a canopy for shading while at the same preventing the tree root system from lifting the pavement. Irrigation is required in landscape planting areas. The applicant has stated that irrigation is planned to be provided. As a condition of approval, an irrigation plan shall be submitted with the building permit for the canopy extension. Additionally, the landscape plan submitted for the building permit shall include notes and specifications to help plantings within the new landscape area prosper: a. Add a note that all wire and twine and the top 2/3 of burlap are to be removed from B& B plants before planting. b. Add specifications for plant quality per ANSLA standards, including for B&B trees. c. The new planting strip needs to have good soil preparation to ensure that soils are decompacted and loosened to at least 18 inches and that resulting planting soils have at least 10% organic material in them (via the addition of compost like Cedar Grove or equivalent that is tilled in to the soil). Notes should be added to the plan about soil preparation. JR Page 6 of 11 H:\Design Review\Costco Gas Station \SR L1 3-038 Costco Fueiling Facility Expansion.docx 08/14/2013 d. Provide specifications for mulch and its application. e. Add planting notes — top of root ball even with soil surface, loosen root ball and straighten or prune any circling roots in container -grown plants before planting, etc. h) Exterior lighting, when used, should enhance the building design and the adjoining landscape. Lighting standards and fixtures should be of a design and size compatible with the building and adjacent area. Lighting should be shielded, and restrained in design. Excessive brightness and brilliant colors should be avoided. Lighting fixtures, including parking lot lighting on poles, the canopy fascia light fixtures, and under the canopy will match the existing fixtures within the fueling facility. Proposed lighting levels are shown on the Electrical Site Plan (Attachment B, sheet SE -1), and are highest under the fueling canopy, in the area where vehicles exit from the canopy and merge into the exit driveway, and in the new parking areas. The lighting for the area under the canopy will be designed to face downward with full cutoff LED fixtures to reduce light source visibility from outside the site while providing a safe fueling environment. 4. Building Design a) Architectural style is not restricted, evaluation of a project should be based on quality of its design and relationship to its surroundings; The design of the canopy extension is the same as the existing canopy areas. The extension will only cover the four southernmost fueling islands; the north fueling island will remain as -is. The canopy extension will start 32 feet south of the north edge of the existing canopy. This will create horizontal modulation of the roofline in the northwestern area of the canopy. b) Buildings should be to appropriate scale and in harmony with permanent neighboring developments; The project uses split face concrete block (CMU) on the canopy columns, consistent with the existing canopy area and construction materials used on the optical facility. The Costco Warehouse and the Home Depot building are similar in scale to the fueling canopy. The proposed canopy extension is in harmony with the scale and character of surrounding development. c) Building components such as windows, doors, eaves, and parapets should have good proportions and relationship to one another. Building components and ancillary parts shall be consistent with anticipated life of the structure; The new canopy and columns of the fueling facility expansion will match those used in the existing fueling facility. Building components for this project are consistent with those used in the design of a gas station. d) Colors should be harmonious, with bright or brilliant colors used only for accent; Colored elevations state "Color to match existing `Mutual Material Rose Brown'; however, the existing color of the CMU used within the fueling facility is a gray split face CMU. Through correspondence with the applicant, the intent is for the new canopy columns to match the color and material of the existing canopy columns. The colors and materials sheet (Attachment C) has been changed by the applicant to reflect this. Staff agrees that the new CMU should match existing, and recommends a condition of approval to require that the new CMU used in the project by the split -face gray CMU used on the existing columns. The split face gray CMU block is also used at the base of the optical facility building, which is interspersed with vertical bands of rose brown split face CMU block. The color of surrounding buildings is predominantly gray, brown, and brownish -red, with green and blue colors used for accent. Red and blue are proposed for the canopy signage and for small signs and structures on the canopy islands (fueling dispensers, bollards, etc.). These accentuate Costco's corporate color scheme for the fueling facility customers underneath the fueling canopy, and are harmonious with the green and blue accent colors used within the design of the optical facility and Home Depot. e) Mechanical equipment or other utility hardware on roof ground or buildings should be screened from view; Mechanical equipment associated with the fueling facility includes the existing controller enclosure, additive tank vent stack, and arid permeator. There are no changes proposed to the existing controller enclosure. A vent stack will be relocated from one of the parking lot landscape islands to the existing landscape area to the east of the controller enclosure. Landscaping in this area will help screen the relocated vent stack from view. The arid JR Page 7of11 H:\Design Review\Costco Gas Station\SR L1 3-038 Costco Fueiling Facility Expansion.docx 08/14/2013 permeator is proposed at the southwestern corner of the fueling facility, in the area where the two new parking areas meet. Shrubs and trees within the new landscape area will help provide screening around the arid permeator. J Exterior lighting should be part of the architectural concept. Fixtures, standards, and all exposed accessories should be harmonious with building design; Lighting fixtures and accessories will match the design of existing fixtures and accessories on the fueling site. New signage proposed is not reviewed as part of this design review but instead will be reviewed under separate sign permit(s). g) Monotony of design in single or multiple buildings projects should be avoided. Variety of detail, form and siting should be used to provide visual interest. The addition is designed in the same style as the existing building, and will blend well with the original structure. Building components and proportions from the original building are maintained. The design of the new addition is consistent with the existing building, with the same materials used. 5. Miscellaneous Structures and Street Furniture. a) Miscellaneous structures and street furniture should be designed to be part of the architectural concept of design and landscape. Materials should be compatible with buildings, scale should be appropriate, colors should be in harmony with buildings and surroundings, and proportions should be to scale. The miscellaneous structures, including fueling dispensers, trash receptacles, and bollards, will match those already existing within the fueling facility, and are typical of the miscellaneous structures associated with gas stations. b) Lighting in connection with miscellaneous structures and street furniture should meet the guidelines applicable to site, landscape and buildings. Proposed lighting will match the existing fixtures, and is proposed to provide customers with adequate lighting levels underneath the canopy structure, as well as lighting for adequate visibility and security within areas where vehicles will be maneuvering on site. COMPREHENSIVE PLAN POLICIES In addition to the specific criteria of the Board of Architectural Review, proposed development must show consistency with adopted plans and regulations (18.100.030 TMC.) Below are the specific policies from the adopted Comprehensive Plan that relate to the location of the proposal. Commercial Areas - Goal 1.7: "Commercial districts that are visually attractive and add value to the community, are visitor and pedestrian friendly, are designed with pride and constructed with quality workmanship, are secure and safe with adequate lighting and convenient access, are uncongested with smooth - flowing traffic patterns, are well-maintained with adequate streetscape landscaping, and are wholesome and in harmony with adjacent uses". 1.7.1 Require design review for significant commercial development. 1.7.2 Require sidewalks for all new construction and redevelopment. 1.7.3 Require adequate parking and lighting. This project is being presented to the Board of Architectural Review for review. Sidewalks along the site perimeter are preexisting. Six parking stalls are planned to be removed for expansion of the vehicle queuing area. Required parking for the optical facility is one space per 1,000 square feet of usable floor area. The gross square footage of the Costco Optical facility is approximately 38,000. After removal of the six parking spaces, there will be 134 spaces remaining on site will exceed code requirements after removal of the six spaces. The addition of fueling dispensers, expansion of the vehicle queuing area, and the addition of a landscape area to serve as a barrier between the fueling facility and the optical facility are expected to improve vehicular circulation on site. Site JR Page 8 of 11 H:\Design Review\Costco Gas Station\SR L13-038 Costco Fueiling Facility Expansion.docx 08/14/2013 lighting will match the design of existing lighting and will illuminate the site and adjacent sidewalks without causing excess brightness or spillover lighting to the Green River. CONCLUSIONS DESIGN REVIEW CRITERIA 1. Relationship of Structure to Site Minor changes to the transition from the fueling facility to the streetscape are proposed with this project, and include adding shrubs to fill in the gaps in the existing hedge within the north and east landscape perimeter areas. Pedestrian movement is currently accommodated along sidewalks on the north and east perimeter of the project site, and there are no changes proposed to these areas. The addition of fueling dispensers and expansion of vehicle queuing area for the fueling facility will improve vehicular circulation on the project site. The addition of a new curbed landscape area will separate the Costco Optical facility employee parking area from the fueling facility to help keep pedestrians out of the fueling facility area where vehicle maneuvering and idling engines characteristic of a gas station do not create an amenable pedestrian environment. The height of the canopy extension will match the height of the existing canopy, and at 17' 6" in height is in scale with the roof height of surrounding buildings. The scale of the structure is consistent with surrounding warehouse retail and industrial buildings. 2. Relationship of Structure and Site to Adjoining Area The canopy extension will use the same materials and will be of the same design as the existing canopy area. Concrete block proposed for the fueling canopy is consistent with the concrete block used on the Costco Optical facility, and the combination of concrete block and metal are consistent with materials used in neighboring developments including the Costco warehouse to the north and the Home Depot to the south. Changes proposed to circulation, including removal of employee parking areas from the vehicle queuing area of the fueling facility, will help reduce potential conflicts between cars entering the fueling facility and pedestrians and slower -moving vehicles within the employee parking area. 3. Landscaping and Site Treatment Demolition of multiple parking lot landscape islands and the addition of new landscape area will result in a total loss of 76 square feet of landscape area. The new landscape area will include more trees than currently exist in landscape areas that will be demolished. New landscape areas include trees, shrubs and groundcover and will help promote an inviting entry into the fueling facility. Parking has been reconfigured so that a total of 20 parking spaces will be located adjacent to the new landscape areas. The new landscape areas range from approximately five to six feet in width. Since there is no room to locate plantings back from the curb to prevent damage from parked cars, staff recommends a condition of approval to add wheelstops to these 20 parking spaces to prevent damage to the plantings in the new landscaped areas. Irrigation is required in landscape planting areas. An irrigation plan was not submitted with design review application materials, but the applicant has stated that irrigation is planned to be provided in the new landscape area. As a condition of approval, an irrigation plan shall be submitted with the building permit for the canopy extension. Additionally, the landscape plan submitted for the building permit shall include the following notes and specifications to help plantings within the new landscape area prosper: a. Add a note that all wire and twine and the top 2/3 of burlap are to be removed from B& B plants before planting. b. Add specifications for plant quality per ANSLA standards, including for B&B trees. c. The new planting strip needs to have good soil preparation to ensure that soils are decompacted and loosened to at least 18 inches and that resulting planting soils have at least 10% organic material in them (via the addition of compost like Cedar Grove or equivalent that is tilled in to the soil). Notes should be added to the plan about soil preparation. d. Provide specifications for mulch and its application. e. Add planting notes — top of root ball even with soil surface, loosen root ball and straighten or prune any circling roots in container -grown plants before planting, etc. JR Page 9 of 11 H:\Design Review\Costco Gas Station \SR_L13-038 Costco Fueiling Facility Expansion.docx 08/14/2013 4. Building Design The design of the canopy extension is the same as the existing canopy areas, except that the extension will only cover the four southernmost fueling islands; the canopy area over the north fueling island will not be expanded. The canopy extension will start 32 feet south of the north edge of the existing canopy. This will create horizontal modulation of the roofline in the northwestern area of the canopy. Colored elevations shown on sheet P32-04 of Attachment B state "Color to match existing `Mutual Material Rose Brown"; however, the existing color of the CMU used within the fueling facility is a gray split face CMU. Through correspondence with the applicant, the intent is for the new canopy columns to match the color and material of the existing canopy columns. Staff agrees that the new CMU should match the existing, and recommends a condition of approval to require that the new CMU used in the project be the split -face gray CMU used on the existing columns. Mechanical equipment associated with the fueling facility will be screened by a combination of existing and new landscape plantings. Lighting fixtures and accessories will match the design of existing fixtures and accessories on the fueling site. New signage proposed is not reviewed as part of this design review but instead will be reviewed under separate sign permit(s). 5. Miscellaneous Structures Miscellaneous structures, including fueling dispensers, trash receptacles, and bollards, will match those already existing within the fueling facility, and are typical of the miscellaneous structures associated with gas stations. COMPREHENSIVE PLAN GUIDELINES Commercial Areas Goal 1.7 The project meets the Commercial Areas Goal. The project is going through design review. Sidewalks are preexisting and lighting will be added to the site. Six parking spaces are proposed to be removed, but the remaining number of parking stalls greatly exceeds the required number of parking spaces for the optical facility. RECOMMENDATION Staff recommends that the BAR adopt the Findings and Conclusions of the staff report and approve the request subject to the following conditions. 1. Irrigation is required in the new landscape area. An irrigation plan shall be submitted as part of the building permit. 2. Wheelstops shall be added to the 20 parking spaces located adjacent to the new landscape area to prevent damage to the plantings. 3. The following information shall be added to the landscape planting plans as part of the building permit: a. Add a note that all wire and twine and the top 2/3 of burlap are to be removed from B& B plants before planting. b. Add specifications for plant quality per ANSLA standards, including for B&B trees. c. The new planting strip needs to have good soil preparation to ensure that soils are decompacted and loosened to at least 18 inches and that resulting planting soils have at least 10% organic material in them (via the addition of compost like Cedar Grove or equivalent that is tilled in to the soil). Notes should be added to the plan about soil preparation. d. Provide specifications for mulch and its application. e. Add planting notes — top of root ball even with soil surface, loosen root ball and straighten or prune any circling roots in container -grown plants before planting, etc. 4. Concrete block used on the new fueling facility columns shall by gray split face CMU to match the material and color used on the existing canopy columns. JR Page 10 of 11 08/14/2013 H:\Design Review\Costco Gas Station\SR L13-038 Costco Fuelling Facility Expansion.docx Informational Items 1. The proposed signs have neither been reviewed nor approved. Applicant shall be responsible for obtaining a sign permit for any proposed signs, unless they are exempt under Tukwila's Sign Code. 2. Plans submitted for construction shall reference 2012 Building codes. 3. A Transportation Impact Fee in the amount of $19,218.78 applies to the future Building permit (or) future Public Works permit. Fee is based on 6 new Vehicle Fueling Positions (VFP) in Zone 1 times $3,203.13 per (VFP). 4. A tank permit from the Fire Department shall be obtained for fuel island modifications. JR Page 11 of 11 H:\Design Review\Costco Gas Station\SR L13-038 Costco Fueiling Facility Expansion.docx 08/14/2013 Fueling Facility Expansion Costco Wholesale 451 Costco Drive, Tukwila, WA 98188 APN No. 362304-9107 Costco Loc. No. 6 July 15, 2013 Revised August 13, 2013 Project Narrative Expansion of the fueling facility will consist of an additional row of multi -product gasoline dispensers (six fueling positions), a 29 -foot by 88 -foot fueling island canopy extension (2,552 square feet for a total canopy area of 6,392 square feet), and associated site improvements. Site improvements include the relocation of parking adjacent to the fueling facility and minor grading and utility work associated with the expansion. The fueling facility will continue to operate, as approved under the existing land use approvals, with regard to the hours of operation and staffing levels. The new canopy will be designed to match the existing canopy and canopy columns. The existing Costco Gasoline canopy signage, approximately 27 square feet on the west and south facade, will be relocated and replaced with Costco Gasoline canopy signs that are approximately 20 square feet in size and centered on the facade. New canopy signage will also be installed on the north and east canopy facades. Signage on these facades are exempt from planning review because these signs are not visible from the public right-of-way. The intent of the expansion is to improve on-site circulation for the established membership base utilizing the facility. Circulation improvements include providing additional depth to the vehicle queuing area (proposed queuing area depth is 125 feet) and providing six (6) additional fueling positions. While the expansion is not anticipated to generate a significant number of new trips to the fueling facility, it should provide a more efficient fuel purchasing experience for the members already utilizing the facility at this location. The project will remove 6 parking stalls for a total of 766 off-street parking stalls for the warehouse and regional optical facility. The number of stalls exceeds the City required off- street parking minimum of 566 stalls. Landscaping within the project area is designed to City standards for parking lot landscaping, and approximately 76 square feet of overall landscape area will be removed from the project. There is 1,529 square feet of existing landscaping within the area being disturbed; the proposed landscape area is 1,453 square feet. Existing front yard landscaping will be enhanced in degraded areas to meet City standards. Construction of the fueling facility and site improvements will be completed in a single phase and commence after approval of the applicable permits. The existing fueling facility will remain open during construction of the expansion, and night construction will be proposed through an associated Noise Variance application. 1 Attachment A DESIGN REVIEW JUSTIFICATION The City of Tukwila Board of Architectural Review is the deciding body for this Design Review application. The City of Tukwila Municipal Code Section 18.60.050 identifies Design Review Criteria that must be addressed to for the project. The following identifies criteria specific to commercial development along with our justification response to each criteria: 1. Relationship of Structure to Site a. The site should be planned to accomplish a desirable transition with the streetscape and to provide for adequate landscaping and pedestrian movement. RESPONSE: The existing fueling facility is located on the southwest corner of Costco Drive and Christensen Drive, both private drives. The project is separated from both drives by a pedestrian sidewalk and mature landscaping. The mature landscaping includes trees, shrubs, and groundcover which provide a filtered screen transition for the site. The expansion will be to the southwest portion of the canopy; therefore, the existing landscape transition and pedestrian sidewalk will not be impacted by this project. b. Parking and service areas should be located, designed and screened to moderate the visual impact of large paved areas. RESPONSE: The existing landscape frontage along Costco Drive and Christensen Drive is consistent with current parking lot landscape screening standards. The parking within the project area will be designed to meet or exceed City parking lot landscaping requirements. These landscape elements serve to filter the visual impact of the parking and queuing area, and provide visual depth to the site. c. The height and scale of each building should be considered in relation to its site. RESPONSE: The fueling canopy addition will be designed to match the existing fueling canopy. The canopy height and dimensions are specified by City adopted regulations governing vehicular accessibility and storm drainage. The canopy addition will be set back from the existing north canopy edge, providing a modulation of the north canopy elevation. 2. Relationship of Structure and Site to Adjoining Area a. Harmony in texture, line and masses is encouraged. RESPONSE: The canopy addition will be designed to match the existing texture and color of the existing canopy. Many of the surrounding buildings are also owned by Costco and are designed in harmony with the fueling facility. Similar features include the use of split face concrete, flat roofs, and the use of grey in the building's color. b. Appropriate landscape transition to adjoining properties should be provided. RESPONSE: The landscape transition to the adjoining property south of the fueling facility includes existing trees and shrubs adjacent to the fueling facility, and existing trees, shrubs, and ground cover at the perimeter of the property. This landscaping 2 between the south adjoining property and fueling facility exceeds the landscaping requirements for the Tukwila Urban Center (TUC) zone. c. Public buildings and structures should be consistent with the established neighborhood character. RESPONSE: The expansion will be designed to match the existing fueling facility canopy and canopy columns. d. Compatibility of vehicular and pedestrian circulation patterns and loading facilities in terms of safety, efficiency and convenience should be encouraged. RESPONSE: The fueling facility is located on the periphery of the Costco site, away from pedestrian circulation patterns, to provide safe separation of pedestrian and auto oriented uses. The project will expand the existing vehicular queuing area and provide additional fueling positions to reduce wait times and provide a more efficient fuel purchasing experience for the members already utilizing the facility at this location. e. Compatibility of on-site vehicular circulation with street circulation should be encouraged. RESPONSE: The existing driveways to Costco Drive and Christensen Drive will remain unchanged. Access to the fueling facility will be from the Costco Drive driveway. The expansion will eliminate parking space conflicts with the fueling facility access and provide for additional queuing area by separating the queuing area from the optical facility. These improvements, combined with the additional fueling positions, should allow Costco to efficiently serve members while maintaining good on-site and street vehicular circulation. 3. Landscape and Site Treatment a. Where existing topographic patters contribute to beauty and utility of a development, they should be recognized, preserved and enhanced. RESPONSE: The expansion will involve minimal site grading. Existing topographic patters will be maintained. b. Grades of walks, parking spaces, terraces and other paved areas should promote safety and provide an inviting and stable appearance. RESPONSE: The project will maintain the existing minimal slopes within walking, parking, and other paved areas. c. Landscape treatment should enhance architectural features, strengthen vistas and important axis, and provide shade. RESPONSE: Existing landscaping includes frontage trees spaced approximately 20 feet apart, evergreen shrubs, ground cover, parking lot trees within planter islands, perimeter trees and landscaping adjacent to the south property line, and trees along south side of the fueling facility. The project will remove approximately five (5) existing trees and provide approximately ten (10) new trees with revised landscaping within the 3 project area. The existing and improved landscaping enhance the site and provide additional shading. d. In locations where plants will be susceptible to injury by pedestrian or motor traffic, mitigating steps should be taken. RESPONSE: All existing and proposed landscaping within the project area is protected by raised curb as required by the Zoning Code to protect plants from motor traffic. e. Where building sites limit planting, the placement of trees or shrubs in paved areas is encouraged. RESPONSE: The existing site contains trees and shrubs along the street frontage and within parking lot landscape islands. The project will improve the parking lot landscape area by adding additional trees, landscape islands, and landscape separators between parking spaces and the fueling facility. f. Screening of service yards and other places, which tend to be unsightly should be accomplished by the use of walls, fencing, planting or combinations of these. Screening should be effective in winter or summer. RESPONSE: The site has been screened according to City Code requirements with frontage trees and evergreen shrubs. Ground -mounted mechanical equipment will also be screened with planting material per the City's standards. g. In areas where general planting will not prosper, other materials such as fences, walls, and paving of wood, brick, stone, or gravel may be used. RESPONSE: Other materials are not proposed at this time. h. Exterior lighting, when used, should enhance the building design and the adjoining landscape. Lighting standards and fixtures should be of a design and size compatible with the building and adjacent area. Lighting should be shielded, and restrained in design. Excessive brightness and brilliant colors should be avoided. RESPONSE: Costco's under canopy and signage lighting is unique to Costco in that it is not designed with an excessive number of bright lights to attract customers. Instead, Costco's fueling facility lighting is muted to reduce off-site glare and impacts to night skies. The lighting for the under canopy addition will be designed to face downward with full cutoff LED fixtures to reduce Tight source visibility from outside the site while providing a safe fueling environment. 4. Building Design a. Architectural style is not restricted; evaluation of a project should be based on quality of design and relationship to surroundings. Response: The expansion is within an established retail area and not visible from the public right-of-way. The expansion will carry the existing canopy design, colors, and materials through to the canopy addition. The canopy will remain consistent with the theme and design of the surrounding neighborhood. 4 b. Buildings should be to appropriate scale and be in harmony with permanent neighboring developments. Response: As stated previously, the canopy expansion will carry the existing canopy design, colors, and materials through to the canopy addition. The size of the canopy expansion is specified by stormwater requirements to isolate the under canopy area during storm events. The roof of the canopy is consistent with the roof designs for surround buildings. Unlike retail fueling facilities, Costco's fuel dispenser canopy is not designed with bright colors and lighting to attract customers, but is more subdued to blend into the surrounding environment. Furthermore, the signage, which is limited in comparison to other retail facilities, is positioned in the center of the canopy fascia to provide a visual break in the canopy fascia plane. c. Building components, such as windows, doors, eaves, and parapets should have good proportions and relationship to one another. Building components and ancillary parts shall be consistent with anticipated life of the structure. RESPONSE: The expansion will create a facade modulation for the canopy that is well proportioned and enhances the visual depth of the canopy. The canopy expansion will be constructed with steel beams, steal fascia panels, and split face concrete canopy column cladding that will endure the life of the structure. d. Colors should be harmonious, with bright or brilliant colors used only for accent. RESPONSE: The addition will match the existing canopy colors which are harmonious with the surrounding area. The new signage will have colors that will match the existing signage. e. Mechanical equipment or other utility hardware on roof, ground, or buildings should be screened from view. RESPONSE: The project will screen ground -mounted vapor recovery equipment with landscape screening per the City's Zoning Code. f. Exterior lighting should be part of the architectural concept. Fixtures, standards and all exposed accessories should be harmonious with building design. RESPONSE: The existing full cutoff parking lot lighting will remain within the project area. The lighting for the under canopy addition will be designed to face downward with full cutoff LED fixtures to reduce light source visibility from outside the site. Signage eyebrow lighting will also be shielded and downward facing. The lighting for the facility is consistent with the surrounding retail and manufacturing facilities in the area. g. Monotony of design in single or multiple building projects should be avoided. Variety of detail, form and fitting should be used to provide visual interest. RESPONSE: Since the project involves an addition to the existing fueling canopy, the building design, color, and materials will match the existing canopy. Visual interest will be enhanced with the fascia modulation created by the addition. This modulation will provide visual depth and differentiate the site from other fueling facilities in the vicinity. 5. Miscellaneous Structures and Street Furniture a. Miscellaneous structures and street furniture should be designed to be part of the architectural concept of design and landscape. Materials should be compatible with buildings, scale should be appropriate, colors should be in harmony with buildings and surroundings, and proportions should be to scale. RESPONSE: The existing fueling facility is located on the southeast corner of two private drives with large commercial retailers and manufactures in the vicinity. Miscellaneous structures and street furniture are not proposed with this project as this project expands an existing auto -oriented use and does not front a public right-of-way. b. Lighting in connection with miscellaneous structures and street furniture should meet the guidelines applicable to site, landscape, and buildings. RESPONSE: Existing parking lot lighting and new canopy lighting will be revised as previously discussed. No changes to lighting along the private streets fronting the fueling facility are proposed with this project. 6. Consistency with adopted plans and regulations (TMC 18.100.030): Demonstrate the manner in which the proposal is consistent with, carries out and helps implement applicable state laws and the regulations, policies, objectives and goals of the City of Tukwila Comprehensive Plan, the City of Tukwila's Development Regulations and other official laws, policies and objectives for the City of Tukwila. RESPONSE: The City's Comprehensive Plan and Zoning Map designate the site as Tukwila Urban Center. The expansion is a use that is consistent with this designation. The Comprehensive Plan identifies the following goal for all commercial projects: Goal 1.7 — Commercial districts that are visually attractive and add value to the community, are visitor and pedestrian friendly, are designed with pride and constructed with quality workmanship, are secure and safe with adequate lighting and convenient access, are uncongested with smooth -flowing traffic patterns, are well-maintained with adequate streetscape landscaping, and are wholesome and in harmony with adjacent uses. The project is consistent with this goal as the expansion will match the quality of the existing fueling facility and provide a facade modulation to add visual distinction. The additional gasoline dispensers and expanded queuing area are designed to reduce queuing wait times, which should reduce congestion during peak fueling periods. Furthermore, the expansion is a continuation of an existing safe and well landscaped fueling facility that has been in harmony with the surrounding uses since opening over a decade ago. The Comprehensive Plan also identifies goals and policies specific to the Tukwila Urban Center Zone that this project is consistent with. One of these goals is the Urban Development goal for the Tukwila Urban Center which states the following: Goal 10.2 Urban Development — Encourage and allow a central focus for the Tukwila Urban Center, with natural and built environments that area attractive, functional, and 6 distinctive, and supports a range of mixed uses promoting business, shopping, recreation, entertainment, and residential opportunities. The policies associated with this goal address site design, parking, building design, and economic development with the intent of encouraging well designed projects that support business in the zone. This expansion is scaled to effectively and efficiently service current and anticipated future member demands. The facility is supported by a well-designed internal network of vehicle drive aisles and private roads that allow for vehicle circulation. The expansion has been specifically designed to separate the queuing area from the parking area to further alleviate congestion. While the fueling facility is intentionally separated from pedestrian paths to avoid pedestrian conflicts with this auto -oriented use, pedestrian paths are located long Costco Drive and Christensen Drive. These pedestrian paths also provide access to the Green River Trail to encourage pedestrian connectivity. As previously mentioned, the project contains several features that will make for an attractive and quality expansion while continuing to provide a retail service to the surrounding area at a scale that is appropriate for present and forecasted demand. CONCLUSTION: Based on the forgoing responses to Design Review approval criteria, the Board of Architectural Review is justified in approving the Design Review application for this project. 7 PROJECT DIRECTORY OWNER COSTCO WHOLESALE 999 LAKE DRIVE ISSAQUAH, WA 98027 t: 425.313.8100 CONTACT: DAVID ROGERS ARCHITECT MULVANNYG2 ARCHITECTURE 1110 112TH AVE NE, SUITE 500 BELLEVUE, WA 98004 t: 425.463.2000 f: 425.463.2002 CONTACT: ED GALLIWAY CIVIL ENGINEER / SURVEYOR / LANDSCAPE BARGHAUSEN CONSULTING ENGINEERS, INC. 18215 72nd AVENUE S KENT, WA 98032 t: 425.251.6222 f: 425.251.8782 CONTACT: AMBER KELLY klift711-7f 11 _._7 GREEN INK PACKAGE TUKWILA, WA VERTICAL ISLAND FUEL FACILITY EXPANSION a �3`T{>a r+�;:.•3 °An ��' � n 9�."3�=a39G ��°°: �,19 a.g,.? ;tEGIfjNAL . )PTICAL • 1 `IA�ICIT�, LL AREA OF WORK COSTCO WHOLESALE TUKWILA, WASHINGTON VICINITY MSP PROJECT DATA CLIENT: COSTCO WHOLESALE 999 LAKE DRIVE ISSAQUAH, WA 98027 PROJECT ADDRESS: 451 COSTCO DRIVE TUKWILA, WA 98188 SITE AREA: BOUNDARIES INFORMATION: ± 4.28 ACRES (186,231 S.F.) THIS PLAN HAS BEEN PREPARED PER SURVEY BY BARGHAUSEN ENGINEERS DATED 12.04.04. SCOPE OF WORK A (3) DISPENSER FUEL FACILITY EXPANSION TO AN EXSTING (8) DISPENSER FUEL FACILITY, WITH ASSOCIATED SITE IMPROVEMENTS. SITE IMPROVEMENTS TO INCLUDE ASSOCIATED CURBING, PAVING, AND STRIPING. SHEET INDEX TS 101 COVER SHEET C1 CONCEPTUAL GRADING AND DRAINAGE EXHIBIT PP 11-04 DEMOLITION SITE PLAN PP 12-04 PROPOSED SITE PLAN EX 11-04 EXISTING SITE PLAN PP 13-04 PROPOSED ENLARGED SITE PLAN PP 31-04 PROPOSED ELEVATIONS PP 32-04 COLORED PROPOSED ELEVATIONS SE -1 ELECTRICAL SITE PLAN OVERALL SITE PLAN 4/3 ---19 3 JUNE 26, 2013 COSTCO WHOLESALE TUKWILA, WA #006 451 COSTCO DRIVE TUKWILA, WA 98188 Inn poi alMulynny:r,. nyfonn ors..., inwro MK. p.n.,. In withp horn M.rannyra2MInacturs. 1110 112TH AVE. NE 1 SUITE 500 BELLEVUE, WA 1 98004 1425.463.2000 1 1425.463.2002 MUlvannyG2.com I 93-0440-28 JUNE 26, 2013 OVERALL SITE PLAN TS101 Attachment B 15' SIDE YARD B.S.B.L. CITY OF TUKWILA C. _ ,EPTUAL GRADING AND DRAINAGE EXHIE 1=20' 0 10 20 40 GREASE TRAP •illi IlurF<,'gf"W4�Ill , 111 2.2.11 201 3 M H MATCH EX. EX. PROPERTY LINE CO. CATCH J 7 1.66 2614 RELOCATE EXI4II LIGHHT TO NEW 61-6 7 PLANTE 21.1 MATCH EX. REMOVE E1. C RELOCATE EXISTING ARID TO NEW P r - TOR AREA I _lg°a T H re- 26.50 2 -FOOT WIDE CORB- REMOVE EX. C RB OPENING I I I I �.•I.l MATCH E1 • n„ 1 I REPIPE EXISTING VENT NEW ASPHALT 1 1 LINES TO NEW ID I PAVEMENT I e PERMEAOR %//'' ift }am 1AATCH LX. n �. TA -?.,. �� C9' %/' rte: qT` �1 rill '%i e' ca E%. OPARATOR MA1CH EX. III FIi %/�' _TO ...BEREMOVEDAND I MASCH EX.I / I L T O '�/�� REPPAGE> 26.801 nl / 1,1�-� „ds'! . REMOVE EX. CUjtB/ J/j 7-F .__ REMOVE EX. LO ICHL �W E REMOVE EX. CURB 'jam/.,' b 6 ChIJOPY ROOF j/, MATCH EX. DRAIN TIGH LINE -MATN---'E X. ' ' ,,,';%'' ;' NEW ASPHALT ��' REMOVE EX. STRIPING PAVEMENT //� REMOVE EX. CURB MATCH EX.'i/,' �� �' MATCH EX. `�. 1 1'P 1 I I r" - 1 r. I F____(._ _(1 11 �_- MATCH EX. SOLO —rte MATN:EK.::,'`I :.INSf91.T:' NEW TRE 4.02 MATCH EX. SAWEUT 1 EINE "" REMOVE EX. STRIPI I "''° ----RELOCATE EXISTING LOT LIGHT TO 14EVis PLANTER AREA 2092, CH EXE NEW ASPHALT PAVEMENT MATCH EX. I 11AATCF IEX. " REMOVE EX. CURB 2 92 • 2600 CB XI 1 1 1 1 COSTCO SITE -' ANDOVER PARK EAST SOUTHCENTER PKWY NOT TO SCALE GREE WEST VALLEYHIGHWAY VER 0 VICINITY MAP NTS APPROX. GRADING OUANTTIIES CUT = 200 CY FILL = 100 CY 1 EXPORT = 100 CY 1 VERTICAL DATUM am ''. >c 1 NAVD 88 \ 11 ROOD INFORMATION 1 ; r 1 DESIGNATION OF THE FL000 ZONE IS •X• AND DETERMINED TO BE OUTSIDE OF 500 YEAR FLOOD PLAIN \'I°°° 5 ACCORDING TO FEMA FLOOD INSURANCE RATE MAP NUMBER 53033C0978 F. COMMUNITY NUMBER 530091 1',;\ 1 1 (CITY OF TUKWILA), PANEL NUMBER 978, SUFFIX F, EFFECTIVE MAY 16, 1995, KING COUNTY, WASHINGTON. THIS DATA IS REAFFIRMED BY FIRM MAPS NOT YET ADOPTED BUT PUBLISHED BY KING COUNTY FLOOD I1 5 SERVICES AND RETRIEVED FROM THEIR WEBSITE ON DECEMBER 15, 2010. k, EX. CONTROLLER ENCLOSURE CONTRACTOR TO RELOCATE EX. ADDITIVE TANK VENT STACK. MATCH EX. MATCH EX. 1010 CB A oSilt oro . 2627 ,ss�aaq M p,.n ° II II 4 Q3 /3 -038 8 m X W z 0 0 z CS z 0 J FUEL FACILITY EXPANSION 400 COSTCO DRIVE 5 20.11 Know what's below. CaII before you dig. Dial 811 LL ISSAQUAH, WA 98027 2 URIIY COWL JCT NDTB THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATION, DIMENSION, ANO DEPTH OF ALL EXISTING UTILITIES WHETHER SHOWN ON THESE PLANS OR NOT BY POTHOLING THE UTILITIES AND SURVEYING THE HORIZONTAL AND VERTICAL LOCATION PRIOR TO CONSTRUCTION. THIS SHALL INCLUDE CALLING UTILITY LOCATE 0 811 AND THEN POTHOLING ALL OF THE EXISTING UTILITIES AT LOCATIONS OF NEW UTILITY CROSSINGS TO PHYSICALLY VERIFY WHETHER OR NOT CONFLICTS EXIST. LOCATIONS OF SAID UTILITIES AS SHOWN ON THESE PLANS ARE BASED UPON THE UNVERIFIED PUBLIC INFORMATION AND ARE SUBJECT TO VARIATION. IF CONFLICTS SHOULD OCCUR. THE CONTRACTOR SHALL NOTIFY BARGHAUSEN CONSULTING ENGINEERS, INC. TO RESOLVE ALL PROBLEMS PRIOR TO PROCEEDING WITH CONSTRUCTION. e:7/15/2013 156 PM O E CO 2 00 • O • co o SURE 150 COSTCT IVE .1ems 11 MIMEO O EXISTING REGIONAL OPTICAL FACILITY 441 COSTCO DRIVE EXISTING HYDRANT Ione 0 Emil I I —' /14 1 �1 1 III rr --j L T= 11 1 II I II ,-NI ll 1)(54 I DEMOLISH SITE CURB AND PANT AS SHOWN ❑O IL T — 1 II I it I II J II.o 0 owl SITE POLE AND VENT STACK TO BE REOLCATED l 1 I 1 1 — -'t:_.1- — 1— — I DEMOLISH SRE POLES AS SHOWN it 00" •. COSTCO WHOLESALE ._.■ r_.. .—.. DEMOLITION SITE PLAN C/3 -a38 AUGUST 13, 2013 0 4' 8' 16 32' WHOLESALE TUKWILA, WA #006 451 COSTCO DRIVE TUKWILA, WA98188 IRIPPEIA w.mvp.aw.m.tr MVO =.,.a. 1110112THAVE. NEI SUITE500 BELLEVUE, WA 98004 t 425.463.20001 f 425.453.2002 MUIr0nnyG2.00m 93-044-28 AUGUST 13, 2013 DEMOLITION SITE PLAN PP 11-04 30' PERMANENT & IRREVOCABLE NON-EXCL USNE EASEMENT 54' EASEMENT TO CHICAGO. MILWAUKEE. ST. PAULO PACIFIC RAILROAD CO. 0 Li ( ( J LEXISTING PICNIC AREA EXISTING DRINKING FOUNTAIN EXISTING WATER VALVES WANATER METER WARR. CONTROL BOX ioloLI±, ,LI l I `L ENTRANCE EXISTING %Z /0 SUITE 150 z FOOD PLANT SU'TE 100 EXISTING TRANSFORM ILLL. r1 I 1a,9 I�rl��l I I� IST. TIRE INSTALLATION COSTCO [)RIVE r EXISTING HYDRANT EXISTING REGIONAL OPTICAL FACILITY 441 COSTCO DR[VE EXSTING WI GUARD POSTS RECEIVING ' LCON:A'U.NICATION' ` lO J! I GAS STa7ONOR �' I 1zs-T•a 1� � � „� ' I �h nAc 10 iii _► EXfSTTINI EXIG pAn-PRSTIN EXIST. MEGI1 EXISTING FIRE HYDRANT W'I WATER VALVE_ N'/GUAROPOSTS EXSTING nfTUNA DOCK I3 1I 11 U �-7 EXISTING NT NO PUBLIC ALCE59 451 COS 11 ► I I �_,\O EX STING En CONTROLLER ENCLOSURE V COSTCO WHOLESALE a TUKWILA, WA AREA OF WORK SEE PP 13-04 PROJECT TA CLIENT: COb....i WHOLESALE 999 LAKE DRIVE ISSAQUAH, WA 98027 PROJECT ADDRESS: 400 COSTCO DRIVE TUKWILA WA 98188 WAREHOUSE SITE AREA 13.93 ACRES (606,591 S.F.) OPTICAL SITE AREA 4.28 ACRES (188,232 S.F.) TOTAL SITE AREA: 1821 ACRES (792,823 S.F.) BOUNDARIES THIS PLAN HAS BEEN INFORMATION: PREPARED BY USING BARGHAUSEN CIVIL DWG DATED 6-24-99. EXISTING BUILDING DATA (WAREHOUSE): EXISTING BUILDING AREA EXISTING TIRE INSTALLATION EXISTING BALER ROOM EXISTING TOTAL BUILDING 206,910 S.F. 2,453 S.F. 2,903 S.F. 212,266 S.F. EXISTING PARKING DATA (WAREHOUSE): ® 10' WIDE STALLS 502 STALLS ®9' WIDE STALLS 88 STALLS Bc HANDICAP STALLS 12 STALLS EXISTING TOTAL PARKING (WHSE) 602 STALLS NO. OF STALLS PER 1000 S.F. OF BUILDING AREA (212,266 SF): 2.84 STALLS NO. OF STALLS REQUIRED BY JURISDICTION (2.5 STALLS / 1000 S.F.): 531 STALLS PROPOSED PARKING DATA (WAREHOUSE): TOTAL PARKING (NO CHANGE) 602 STALLS EXISTING BUILDING DATA (OPTICAL): EXISTING OPTICAL FACILITY 34,544 S.F. EXISTING PARKING DATA (OPTICAL): ® 10' WIDE STALLS ® 9' WIDE STALLS ®54 HANDICAP STALLS 11 STALLS 151 STALLS 4 STALLS EXISTING TOTAL PARKING (OPTICAL) 166 STALLS NO. OF STALLS PER 1000 S.F. OF BUILDING AREA (34,544 SF): 4.81 STALLS NO. OF STALLS REQUIRED BY JURISDICTION (1.0 STALLS 11000 S.F.): 35 STALLS PROPOSED PARKING DATA (OPTICAL): ® 10' WIDE STALLS a®9' WIDE STALLS R HANDICAP STALLS PROPOSED TOTAL PARKING 9 STALLS 147 STALLS 4 STALLS 160 STALLS NO. OF STALLS PER 1000 S.F. OF BUILDING AREA (34,544 SF): 4.63 STALLS JURISDICTION REQUIRED PARKING 35 STALLS PROPOSED PARKING 160 STALLS EXTRA PARKING AVAILIBLE FOR WHSE 125 STALLS PROPOSED TOTAL PARKING (OVERALL) 762 STALLS TOTAL REQUIRED BY JURISDICTION 566 STALLS NO. OF STALLS PER 1000 S.F. OF BUILDING AREA (246,810 SF): 3.09 STALLS NOTES: EXISTING CONDITIONS TO BE FIELD VERIFIED. VICINITY MAP 00 TUKWILA PKWY IZ N LL w a 1- z w U 2 1- O co ANDOVER w 0 0 z SAXON DR. S. 180TH PROPOSED SITE PLAN L./3 -38' AUGUST 13, 2013 0 10' 20' 45 80' COSMO WHOLESALE TUKWILA, WA #006 451 COSTCO DRIVE TUKWILA, WA98188 wanr442N4100S, MN. maned. No pod . di down. mmay na inpna�u4 n any.mn>M.'n mons About Y„dal.n h xmN horn Mdwml4i MTladun. 1110112TH AVE. NE I SUITE 500 BELLEVUE, WA 198004 t 425.463.2000 11425.463.2002 MulvannyG2.com 93-044-28 AUGUST 13, 2013 PROPOSED SITE PLAN PP 12-04 8/13/20138:23 AM FILE. H:\RETAILICOSTCO193193-0440-28 TUKWILA GAS EXPANSION107 CAG1701 PRELIMINARV1930440•P 1 BIRO 1 SUITE 150 COSTGOT IVE 1 L 0 EXISTING REGIONAL OPTICAL FACILITY 441 COSTCO DRIVE .17 0-o O DEMOL SH SITE CURB AND PAINT AS SHOWN L_ 13 COMMUNICATION CONDUITS FOR GAS STATION O 0 0 0 SITE POLE AND VENT STACK TO BE REOLCATED • EXISTING 638' DEMOLISH SITE CONTROLLER POLES AS SHOWN ENCLOSURE J b COSTCO WHOLESALE a TUKWILA, WA ■ I. EXISTING SITE PLAN G./3 -03r AUGUST 13, 2013 0 4' B' 16' 32' WIfOLESALE TUKWILA, WA #006 451 COSTCO DRIVE TUKWILA, WA98188 no F. all. doom. mry imprcauese sny C.V.." 1110 112TH AVE. NE 1 SUITE 500 BELLEVUE, WA 1 90004 1425.463.2000 1 0425.463.2002 MulvannyG2.00m 93-044-28 AUGUST 13, 2013 EXISTING ENLARGED SITE PLAN EX 1 1 -04 IMPIOLIESALS SURE 150 1 L J I II I l0 0 I I 0 EXISTING REGIONAL OPTICAL FACILITY 441 COSTCO DRIVE COSTCO-DRIVE 0 L H 1 I C C r -L-L JELL -L-C-L C C L L' L EXISTING HYDRANT O 1 7 0 0C COMMUNICATION CONCURS FOR GAS STATION 125'-T' b b 0 b 0 o—TIEzo 0 0� 61'-O -I- C o-0 RELOCATED EXISTING ARID PERMEATOR 29' NEW EXPANSION rl I 32'-0' EXISTING EXISTING 67(8' CONTROLLER ENCLOSURE RELOCATED VENT STACK 0 2 COSTCO WHOLESALE TUKWILA, WA G L- L. __ _ 1 r -i [� t n r i T 11 .—C —C --L C C C C L] L' C ❑ O L-- L G f � ENLARGED SITE PLAN G/3 -0.38 AUGUST 13, 2013 0 4' 8' 16' CoOSfiO TUKWILA, WA #006 451 COSTCO DRIVE TUKWILA, WA 98188 PIPPIIIkA 0 klulvarmyG2Aretalbalurs. NM. MM.. � , .Ing ed In my lam or , ti at..m,...a ins. 1110 112TH AVE. NE 1 SUITE 500 BELLEVUE, WA 1 98004 5425.463.2000 1 (425.463.2002 MulvannyG2.com I 93-044-28 AUGUST 13, 2013 PROPOSED ENLARGED SITE PLAN PP 13-04 8 • OSOUTH ELEVATION V SCALE: 1/4" = 1'-0" / BACKGROUND y FOREGROUND> CANOPY FASCIA LIGHTFIY DE r FASCIA' FIXTURE (SOIC 4 3747 / 88'-0' 17-1)' 20'-0' 17-0' 37-0' 37-0' 12'-0' / I � 1 I 1 � 1 \ \ osrco•, � C SOLINE • ., _.=� �: z GASOLINE 1MIE11 1 1 I 1 I 1 1[ 1 1 1 [ < 111 MEASURED FROM BOTTOM OF FASCIA TO GRADE 1 (VERIFY WRH FUTURE FJ(PANSION) IT6' =M I� I DEMO EXISTING FASCIA CANOPY SIGN, �, 1 1 1 1 -■ INN ESN M = I I CENTER ON LIGHT AND SIGN CANOPY T�� �/ I . 1 I GI 1 MOUNT ON CANOPY FASCIA BY CANOPY SUPPLIED, CENTER ON NORTH, WEST, SOUTH, AND EAST SIDES OF CANOPY FASCIA(SIO 4 TYP) • f I I 1 1 I 1 l 11EMI111111111 11=11 , NMI IIIIIII I ® %- M III EM MO r w I NM \.±} WEST ELEVATION (EAST ELEVATION SIM.) 2 SCALE: 1/4" = 1'-0" ENTRANCE SIDE INSTALL CANOPY FASCIA LIGHT FIXTURE, 'WIDE FASCIA' FIXTURE (501C 4 TYP) 29'-0' < NEW yEXISTING \ 37-0' DEMOLISH EXISTING SIGN LIGHTING AND ASSOCIATED SIGN 9'S 10-6' 19'3' 9'3' 9'-0' 14'-0' 9'-0' / 1 �� � 1 I n NEW DISPENSER ItEr 11 11 1 1 11 1 1 11 I I 11 1 11 1 -FASCIAL METAL PANELS COLORS - MATCH EXISTING PANEL COLORS 6k8' STEEL TUBE WRAPPED IN CMU. SPLIT FACE CMU TO MATCH EXISTING CANOPY SIGN CENTER ON CANOPY II No 9001E Rr slm ENM MINE III I I III I I III I I I1 1 1 I EXIT SIDE 0 COSTCO WHOLESALE TUKWILA, WA INSTALL CANOPY FASCIA LIGHT FIXTURE, 14'-0' 9'- ' 19'3' 9'3' / 1 �� I (4/,‘E • I• kI MC01 IN m GASOLINE 1MIE11 CANOPY SIGN, 14 1 1 �T M 1 1 1 11 1 CENTER ON -31-01 CANOPY J 1 1 1 FASCW.METAL PANELS TOMATCH EXISTING PANEL COLORS 11EMI111111111 11=11 , NMI IIIIIII I NEW DISPENSER w, 111 v WOK III EM MO w I NM III N--] 1 III I I I _ 11I 1 1 1V -� 1 F 1 III e 1 1 �' mo mi lEm EXIT SIDE NORTH ELEVATION SCALE: 1/4" = l'-0" 2 F_ ENTRANCE SIDE r -- L Eh SIM. 1.6305 SF 1.5706 SF 1.1818 SF .9701 SF 1.0815 SF 1.5706 SF TOTAL SF: • 11.58 SF LETTERS/LINES ONLY • 19.70 SF AREA .6449 SF .2682 SF 2052 SF .5966 SF .2013 SF 2832 SF .6019 SF .2332 SF .1224 SF .2634 SF .1553 SF 'GASOLINE' AND (3) STRIPES 'LAPIS LAZULI' SW1805 (BLUE) CANOPY SIGN 14 SCALE: 1/2" =1.-0" 1212 PROPOSED ELEVATION /j3 -038' AUGUST 13, 2013 INSTALL CANOPY FASCIA LIGHT FIXTURE, 'WIDE FASCIA' FIXTURE (501C 4 TYP) DEMOLISH EXISTING CANOPY SIGNAGE AND SIGN LIGHRNG (2 TYP) 0 4' B' 16' TUKWILA, WA #006 451 COSTCO DRIVE TUKWILA, WA 98188 PIPPlini A k ▪ 1prt Nd ,cre Na•nN•r a•. ".leati ed >M•,y Nen.*n.m>noft=un•i•pwz mm�Nm•. 1110 112TH AVE. NE 1 SUITE 500 BELLEVUE, WA 1 98004 1425.463.2000 1 9425.463.2002 MUlvannyG2.00m 93-044-28 AUGUST 13, 2013 PROPOSED ELEVATION PP 31-04 374' 129-0' 89-0' f INSTALL CANOPY FASCIA UGHT FIXTURE, MADE FASCIA' FUTURE (SOIL 4 TYP) 17-0' 20•-0' BACKGROUND FOREGROUND \ 1747 37-0' 374' 17-0' 2OWEST ELEVATION (EAST ELEVATION SIM.) SCALE: 1/4" = 1'-0" INSTALL CANOPY FASCIA LIGHT FIXTURE. 'WIDE FASCIA' FIXTURE (501C 3 TYP) 294' 19-0' 44, 3 2 CANOPY SIGN. CENTER ON CANOPY r MOUNT 041 CANOPY FASCIA BY CANOPY SUPPLIED. CENTER ON NORTH. WEST. SOUTH. AND EAST SIDES OF CANOPY FASCIA (5104TYP) { < NEW,.EXISTING> 37-0' 9-0' 1447 2 .11 ENTRANCE 6OSOUTH ELEVATION SCALE: 1/4" = 99 LL 006 } b 29 9 0 0 • r SIDE NEW DISPENSER T t i2 FASCIAL METAL PANELS TO MATCH E001<80 PANEL COLORS -'ANSI 70 GREY • 1PC-108.87–Sir 6'8D" STEEL TUBE WRAPPED IN CMU. COLOR TO MATCH EXISTING. 'MUTUAL MATERIAL ROSE BROWN" ill s 31 O -0" EXISTING/NEW INSTALL CANOPY FASCIA LIGHT FIXTURE, 28-0' 'NIDE FASCIA' FIXTURE (SPC 4TYP) 14'-0' 9-7 19S 94' 1.1 CANOPY SIGN, CENTER ON CANOPY `FASCIAL METAL PANELS TO MATCH E41511N0 PANEL COLORS • 'ANSI 7O GREY -IPC -106-97 SIT NEW DISPENSER '1 11ONORTH ELEVATION SCALE: 1/4" = 1'-0" COSTCO WHOLESALE 2 TUKWILA, WA INSTALL CANOPY FASCIA LIGHT FUTURE. 'WIDE FASCIA' FIXTURE (5010 4 TYP) , EXIT"- -,1\ £ E S P -6 ENTRANCE SIDE L 1.8305 SF 1.5708 SF 1.1818 SF 5701 SF 1.0815 SF 1.5706 SF TOTAL 5F: • 11.58 SF LETTERS IUNES ONLY • 19.70 SF AREA .8449 SF .5968 SF 6019 SF 8530' 26825F .2052 SF 2013 SF 2832 SF 23325F .12245F 2634 SF .15535F L'GASOLINE'IND (3) STRIPES 'LAPIS LAZULY SW1805 (BLUE) CANOPY SIGN . SCALE: 1/2"=1'-0" 1212 PROPOSED ELEVATION L/3 - a38 JUNE 26, 2013 0 4' B' 18 37 WHOLESALE TUKWILA, WA #006 400 COSTCO DRIVE TUKWILA, WA98188 0wr•4021varm.cw Amr.,01 prld 1110 112TH AVE. NE 1 SUITE 500 BELLEVUE. WA 198004 1425.463.2000 11425.4632002 Mulvann)G2.mm 93-044-28 JUNE 26, 2013 PROPOSED ELEVATION P32-04 SAXON DRIVE EXISTING HYDRANT '.8. 114 '0.6 o� Pl Ls b. b.6 115 45@x-2a_S...t1 - J EXISTING REGIONAL OPTICAL FACILITY x.15 !O CONDUNSFCR STATION 2.8 b.8 b.4 b.3 b.6 NEW CANOPY LIGHTS?TYP OF 6 1.2 1.1 b.9 qb.7 b.9 2.9 b,2 2%4 =5.1 1.7 HYDRANT PUBLIC ACCESS 7 1:7 21.4' 21 8 '21.6 ' '20157IN3 CAN .%' U 6.0 '3.6 5.s, 1.8 '2.9 S.3, 1.3 451 COSTCO 16 (DRIVE 441 COSTCO DRIVE r'714 `c.5 `'_.4 5.4 '7 '47 27 2.S ga `.0 $.1 '4.8 9_9 '79 �.7 �.o 12� 142 '2.7 )9 i.l P7.1 °3.7 -04 4,a 12 1.1 1.7 '2.3 1.5 1.4 1.6 2.5 27 16 2.9 b.8 5= 5.5 2.o' 4 1.0( 2.6 1 1.2 b.4 SITE PLAN 1' CHAMFER FI0158 GRADE LIGHT POLE #12 AWG GROUND WIRE TO FIXTURES GROUND LUG TO POLE HAND HOLE/COVER INSULATED GROUNDING BUSHING -CONCRETE FOUNDATION GALVANIZED STEEL ANCHOR BOLTS, 1'x24'«4' (TSP 4) NOTE: PROVIDE CONCRETE J -BOX AS REQUIRED. THIS DETAIL IS FOR ELECTRICAL CONDUITS ROUTING ONLY. SEE STRUCTURAL DRAWINGS FOR CONSTRUCTION DETAIL POLE BASE DETAIL NO SCALE FUEL FACILITY - DROP LENS ENCORE (GA) SITE PLAN NOTES: EC. TO REMOVE EXISTING POLE, BASE AND FIXTURE PROVIDE HEAVY DUTY TRAFFIC RATED J -BOX AT EXISTING POLE LOCATION, EXTEND COSTING FEEDER TO MAINTAIN CONTINUITY AND REPUU. WIRE AS REQUIRED. E.C. TO REMOVE AND DISPOSE OF EXIS1010 1 -HEAD POLE EC. TO REMOVE AND RELOCATE EXISTING 2 HEAD POLE TO OLD 1 HEAD POLE LOCATION. DEMOUSH EXISTING BASE AT 2 -HEAD POLE LOCATION. PROVIDE HEAVY DUTY TRAFFIC RATED J -BOX AT EXISTING POLE LOCATION, EXTEND COSTING FEEDER TO MAINTAIN CONTINUITY. REPULL WIRE AS REQUIRED. RELAMP AND CLEAN LENS OF EXISTING FIXTURES. . FIXTURE DESCRIPTION. ®EXISNNG LIGHT POLE, (2) 400 NH FLAT LENS. TYPE 3 DISTRIBUTION. 20'-O' POLE, WITH 2'-6' BASE. PE EXISTING LIGHT POLE, 400W MH FIAT LENS (ADJACENT 006), TYPE 3, 20'-0' POLE POLE, WITH 2'-6' BASE GA FUEL CANOPY AREA LIGHT, 2501Y P5MH. DROP LENS U 3 '038` ELECTRICAL SITE PLAN 5 8 CO COco 0 qrn 5/] 0 VI 0 SE -1 LIMITED .OPOGRAPHIC SURVEY A PORTION OF THE SOUTHWEST QUARTER OF SECTION 25 AND THE SOUTHEAST QUARTER OF SECTION 26, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. CITY OF TUKWILA, KING COUNTY, WASHINGTON Y =ate% A','.•; ' Cn iIl!IIIIIIItF[J ',Si 111 eo' ROOF ,Oy��. DRAIN R0OF 0X016 ,,., ROOF DRAIN ROOF DRAIN ROOF 890151 1 1 1 1 1 1 1 1 1 1' 1 1 1 1 1 1 1 1 1 1 1 1 •�Jr1T„� 200' SETBACK FROM CERN S. 196TH ST. 1 1 1 1 1 1 1 11,s 1 1 1 1 1 1 1 VICINITY MAP NO SCALE 0 10 20 40 SCALE. r-20' LEG WI POWER LT _ 1DFPIONE MAT WATER VAULT IW4NRE QO LOT UOR ):'( YARD L10R ❑• POWER LETER ® JUNCRON BOX was r -i o oval 8098 (®) ® STORM NFN1100 (0014) o STORM CLEANOUT/ROOF DRAW O 03818X! SUM WHIM (SSYI) o 038/1440 SUER await (go) ® CAS NFU DQ CAS YAM (1.1) DO WATER VALVE OW) �Q RS COWSCION fx FRE 900060 (FN) ® WATER DOME EB WATER NETER (4W) SIGN END e ARM IDNI11.10 (AS CORD) SEC1WN CORNER (AS NOTED) LT 45 70891RA/TGPf8WR90 909110N ASRAT WNERIE GRAVEL -SS WW1 SOAR IRS -50- WORN DRA0U(E DS 040 Lig FENCE //- KOW FENCE -•••- SET FENCE HORIZONTAL HORIZONTAL DATUM - BASIS OF BEARINGS NAD 83(91) THE BEARING OF THE UNE BETWEEN THE WSDOT POINT ID NUMBERS 136 N40 1384 TAKEN AS SOUTH 44'36'58- EAST. BASED UPON NORTH AMERICAN DATUM OF 1983(91) VERTICAL DATUM - BASIS OF ELEVATIONS NORTH AMERICAN VERTICAL DATUM OF 1988 - NAVD 88 1 PROJECT BENCHMARK KING COUNTY POINT DESIGNATION 3537. TAKEN AS 1 ELEV. • 29.824 FEET \ L/3 - oak . U W -J 0) W J 0 O 0 H N 0 U 0 LEGAL DEPARTMENT 999 LAKE DRIVE ISSAQUAH, WA 2 80 ,_ Z U D2 g 0 N N L.1 c 8 o8 l.J N 2 4 OCI Cs( N67 O , N < I I 0 n31i)tn Ai NCV w -6 rri O t to t T 1, T pm Stole: 1'=20' bgilboy %refs: 7880—L1.dwg P:\15000s\15045\survey\15045T002,dwg Dote/Time: Jul 02, 2013 — 1=20'-0' 0 10 20 40 ARD B.S.B.L. KWILA GREASE TRAP COCEPTUAL LANDSC/ PLANTING EXHIBIT Coseico — J -L 80 RELOCATED ARID PERMEATOR IN NEW PLANTER AREA/ • 95 c8 KO ORE CAL CONTRACTOR TO RELOCATE EX. ADDITIVE TANK VENT STACK. B COSTCO SITE WEST VALLEY HIGHWAY ANDOVER PARK EAST SOUTHCENTER PKWY NOT TO SCALE GREs VER CO VICINITY MAP NTS LANDSCAPE PLANT MATERIAL LEGEND SIZE CONDITION SPACING QUANTITY REMARKS SYMBOL BOTANICAL / COMMON NAMES C:)TREES: o ULMUS PARVIFOLM 'EMER II' / ALLEE ELM EXISTING TREE 2' CAL. B & B CALIPER SHOWN AS SHOWN 10 AS SHOWN %/��)� EXISTING TREE 5 SHRUBS: ARBUTUS UNEDO 'COMPACTA / 30• -36• 4' 0.0 35 COMPACT STRAWBERRY TREE ex HEMEROULLIS HYBRIDS / 5AYLILT 1 GALLON 1.5' 0.C. 22 OSMANTHUS DELAVAYI / 30" -36• AS SHOWN 16 ® DEUVAT OSMANTHUS THUJA OCCOENTALIS 'EMERLAD GREEN' / 6' -Y HT. 3.5' 0.C. 7 $ EMERALD GREEN ARBOTMIEA GROUNDCOVERS: =•=•-=•-•--•= WNCA MINOR / DWARF PERIWINKLE 4" POT 12" O.C. AS REM)•• EX15TINC LANDSCAPE AND IRRIGATION F"'"""'1 III EX1SIINC LANDSCAPE AND IRRIGATION Gla O3' STATE OF WASH NGTON REGISTERED LANDSCAPE ARCHITECT ARTHUR M. SEIDEL CERTIFICATE NO. 706 (VALID ONLY WITH SIGNATURE EXPIRES: 12/15/14 STAKE & GUY ONE CROWING SEASON; NURSERY GROWN FOR STREET TREE USE. BRANCHED AT 6' • TO REMNN, SAVE, AND PROTECT TO BE REMOVED MATCHED HEIGHT AND FORM, FULL AND BUSHY, HARDENED CROWD( YELLOW FLOWER. FULL MATCHED HEIGHT AND FORM. FULL AND BUSHY. PUNTED WITHIN THE EXISTING LANDSCAPE TO FILL IN OPEN AREAS LATCHED HEIGHT AND FORM, FULL AND BUSHY HOLD 16" FROM BORDERS, SHRUBS, AND TREES TO REMAIN. SAVE, AND PROTECT TO BE REMOVED Know what's below. CaII before you dig. Dial 811 G 5 8 FUEL FACILITY EXPANSION O a U O —I U § ISSAQUAH, WA 98027 8 F. o � & o s :at UTLITY COW= NOTE THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING THE LOCATION, DIMENSION. AND DEPTH OF 411 EXISTING UT1LITIES WHETHER SHOWN ON THESE PLANS OR NOT BY POTHOLING THE UTILITIES AND SURVEYING THE HORIZONTAL AND VERTICAL LOCATION PRIOR TO CONSTRUCTION. THIS SHALL INCLUDE CALLING UTILITY LOCATE 0 Si1 AND THEN POTHOLING ALL OF THE EXISTING UTILITIES AT LOCATIONS OF NEW UTILITY CROSSINGS TO PHYSICALLY VERIFY WHETHER OR NOT CONFLICTS EXIST. LOCATIONS OF SAID UTILITIES AS SHOWN ON THESE PLANS ARE BASED UPON THE UNVERIFIED PUBLIC INFORMATION AND ARE SUBJECT TO VARIATION. IF CONFLICTS SHOULD OCCUR. THE CONTRACTOR SHALL NOTIFY BARGHAUSEN CONSULTING ENGINEERS, INC. TO RESOLVE ALL PROBLEMS PRIOR TO PROCEEDING WITH CONSTRUCTION. E O E i CO Dale/Time:8/8/2013 ae:a:�07000A7880\exhibit \7880—u. CMU WRAP MUTUAL MATERIALS - MATCH EXISTING H I METAL CANOPY FASCI PAINT TO MATCH - GRE COSTCO SIGN "LAPIS LAZULI" COSTCO SIGN "SAFETY RED" 1 11 Attachment C Jaimie Reavis Assistant Planner City of Tukwila 6300 Southcenter Boulevard, Suite 100 Tukwila, WA 98188 CIVIL ENGINEERING, LAND PLANNING, SURVEYING August 14, 2013 COURIER DELIVERY (206) 431-3659 RE: Responses to Landscape Plan Comments Costco Wholesale Retail Fueling Facility Expansion 451 Costco Drive, Tukwila, WA 98188 Costco Loc. No. 6 / Our Job No. 7880 Dear Jaimie: We have revised the plans and technical documents for the above -referenced project in accordance with email comments to you from Sandra Whiting, Urban Environmentalist, and the email and telephone exchanges from you with this office. There is no change to the Photo Exhibits, previously provided electronically on August 6, 2013. Enclosed are the following documents for your review and approval: 1. One (1) revised Project Narrative 2. One (1) revised Colors and Materials Board 3. One (1) set of reduced plans (11- by 17 -inch format) 4. Ten (10) copies of the following drawings (24- by 36 -inch format) prepared by MulvannyG2 Architecture, dates noted below: a. Cover Sheet dated June 26, 2013 b. Demolition Site Plan dated August 13, 2013 c. Proposed Site Plan dated August 13, 2013 d. Existing Site Plan dated August 13, 2013 e. Proposed Enlarged Site Plan dated August 13, 2013 f. Proposed Elevations dated August 13, 2013 g. Colored Proposed Elevations (including proposed signage with sign designs and locations) dated June 26, 2013 h. Site Photometry Plan prepared by T.E., Inc. dated June 2013 5. Ten (10) copies of the Conceptual Grading and Drainage Exhibit (24- by 36 -inch format) prepared by Barghausen Consulting Engineers, Inc., revised August 13, 2013. 6. Ten (10) copies of the ALTA/ACSM Land Title Survey (24- by 36 -inch format) prepared by Barghausen Consulting Engineers, Inc. dated June 28, 2013 (including Sensitive Areas) 7. Ten (10) copies of the Landscape Plan (24- by 36 -inch format) prepared by Barghausen Consulting Engineers, Inc., revised August 9, 2013 18215 72ND AVENUE SOUTH KENT, WA 98032 (425) 251-6222 (425) 251-8782 FAX BRANCH OFFICES • OLYMPIA, WA • CONCORD, CA • TEMECULA, CA www.barghausen.com Jaimie Reavis Assistant Planner City of Tukwila -2- August 14, 2013 The following outline provides each of the comments in italics exactly as written, along with a narrative response describing how each comment was addressed. Where appropriate we have listed additional notes to the individual comments in bold italic font exactly as written. Email from Sandra Whiting, City of Tukwila Urban Environmentalist, dated August 7, 2013 1. Add a note that all wire and twine and the top 2/3 of burlap are to be removed from B&B plants before planting. We agreed that the rest of the changes from the original list (numbers 1-7) could be added as recommended conditions of approval. Response: We have noted your comment. 2. Add specifications for plant quality per ANSLA standards, including for B&B trees. We agreed that the rest of the changes from the original list (numbers 1-7) could be added as recommended conditions of approval. Response: We have noted your comment. 3. Red Sunset maple needs a lot of space and good soil quality, as well as irrigation. The planting strip does not appear to be wide enough for these trees to succeed or avoid lifting the pavement. Suggest choosing another species that will be more likely to succeed over the long term — but trees with broad canopy are preferred over columnar trees. See Seattle Department of Transportation tree list for possible medium to large trees that will do well with 5 ft planting strips. Also, since there is already a lot of red maple on the site, more diversity is needed — so we suggest species be planted that is not already on site to add more diversity. Regarding comment number 3, Art and I reviewed the Seattle Department of Transportation Approved Street Tree List and Art said he would be replacing the Red Sunset maple on the plans with an elm tree that will be able to remain healthy within the narrowest proposed section of landscaping where trees are proposed (5 feet). Response: The revised landscape plan reflects an Ulmus Parvifolia 'Emer II' / Allee Elm. 4. The new planting strip needs to have good soil preparation to ensure that soils are decompacted and loosened to at least 18 inches and that resulting planting soils have at least 10% organic material in them (via the addition of compost like Cedar Grove or equivalent that is tilled in to the soil). Notes should be added to the plan about soil preparation. We agreed that the rest of the changes from the original list (numbers 1-7) could be added as recommended conditions of approval. Response: We have noted your comment. 5. Substitute another evergreen shrub for part of the Arbutus unedo compacta to add diversity. Jaimie Reavis Assistant Planner City of Tukwila -3- August 14, 2013 1 (Jaimie) told Art that he can disregard comment number 5; no changes are needed related to the Arbutus unedo compacta. Response: We have noted your comment. 6. Will there be mulch added? If so, specifications for mulch and its application are needed. We agreed that the rest of the changes from the original list (numbers 1-7) could be added as recommended conditions of approval. Response: We have noted your comment. 7. Add planting notes — top of root ball even with soil surface, loosen root ball and straighten or prune any circling roots in container -grown plants before planting, etc. We agreed that the rest of the changes from the original list (numbers 1-7) could be added as recommended conditions of approval. Response: We have noted your comment. Email from Jaimie Reavis, City of Tukwila Assistant Planner, dated August 8, 2013 I looked into our requirements, and the addition of wheelstops to parking spaces does not require a change to the parking stall size or drive aisle width. Response: We have noted the comment. Email from Jaimie Reavis, City of Tukwila Assistant Planner, dated August 9, 2013 Amber and I talked yesterday about a revision that will be needed to the landscape island located between the two parking areas adjacent to the new landscape area. This revision will need to be coordinated with the landscape plan and will need to meet the requirements of 18.52.035, including the minimum size requirement of 100 square feet for landscape islands, the requirement for landscape islands to be a minimum of 6 feet in any direction and generally the length of the adjacent parking space, and the requirement that a minimum of 1 evergreen or deciduous tree be located in each landscape area with the remaining area to contain a combination of shrubs, living groundcover and mulch. Response: Please see the attached revised site and grading plans that reflect the revised landscape planter. The revised location of the arid permeator Amber and I discussed will likely also have minor impacts on the landscape plan. Response: Please see the attached revised site and grading plans that reflect the revised permeator location. Amber and I discussed placement of wheelstops in the parking areas adjacent to the new landscape area. We talked about the code section related to this, but 1 wanted to let you know that one of the design review criteria is: "in locations where plants will be susceptible to injury by pedestrian or motor traffic, mitigating steps should be taken". Placement of wheelstops is often Jaimie Reavis Assistant Planner City of Tukwila -4- August 14, 2013 added as a recommended condition of approval when a curbed landscape area does not have enough room to move landscaping farther back from the curb to prevent damage from parking cars. This is one of the conditions of approval I plan to recommend for this project, unless it is addressed prior to the BAR meeting as a revision to the plans. Response: We note the comment. No revisions were made to the plans at this time. Wheelstops will be incorporated once conditioned. Email from Jaimie Reavis, City of Tukwila Assistant Planner, dated August 9, 2013 1 noticed the CMU color on the colored elevations (P32-04) and colors and materials sheet indicate "Mutual Material Rose Brown". Sheet P32-04 also says "color to match existing." When I was out at the site, I noticed the color of the canopy columns are gray. The rose brown color looks like it matches CMU used in the optical facility, but 1 don't recall seeing it in the fueling facility. Is the intent to match the existing columns or to incorporate the rose brown color used in the optical facility? Response: Costco Wholesale will match the existing canopy and columns. The elevations and color / material board have been revised to reflect this change. The color elevations have not been modified as it is our understanding that we will be conditioned to match the existing finishes. Telephone Conversation with Jaimie Reavis, City of Tukwila Assistant Planner, on August 12. 2103 Request to accurately reflect additional existing parking spaces that are being removed. Response: Please see the attached revised existing site plan that reflects the four (4) additional parking spaces. We have also enclosed the revised Project Narrative. The survey was not modified. We believe that the above responses, together with the enclosed revised plans and technical documents, address all of the email and telephone comments from August 7, 2013 to August 12, 2013. Please review and approve the enclosed at your earliest convenience. If you have questions or need additional information, please do not hesitate to contact me at this office. Thank you. Sincerely, aokle/Li 7zdfv._ Amber N. Kelly Project Manager ANK/dm 7880c.014.doc enc: As Noted cc: David H Rogers, Costco Wholesale Stephen Bullock, MulvannyG2 Architecture (w/enc) Jay S. Grubb, Barghausen Consulting Engineers, Inc. John Ellingsen, Barghausen Consulting Engineers, Inc. Chris Tebaldi, Barghausen Consulting Engineers, Inc. Matt Cyr, Barghausen Consulting Engineers, Inc. KLE/NFELOER Bright People. Right Solutions. fn M July 5, 2013 W ® - z` Project No. 134324 W co U ~ :3 y .L1 Costco Wholesale LY `" o Attention: Mr. David Rogers, Director of Real Estate Development Director of Real Estate Development 999 Lake Drive Issaquah, Washington 98027 Subject: Supplemental Geotechnical Recommendations Proposed Costco Fuel Facility Expansion Costco Wholesale Warehouse No. 006 451 Costco Drive Tukwila, Washington CW#006-28 References: "Geotechnical Engineering Letter Report, Proposed Costco Wholesale ARC Lab Remodel and Addition, Warehouse No. 190, Tukwila, Washington" prepared by Kleinfelder, Inc., dated November 12, 2008. Dear Mr. Rogers: Kleinfelder West, Inc. (Kleinfelder) has reviewed the above -referenced report to provide geotechnical recommendations for design and construction for the proposed fuel facility expansion at the Costco warehouse in Tukwila, Washington. We understand that Costco plans to extend three of the four existing fueling islands at the existing fuel facility and extend the existing canopy to the west. Excavations for the project will be limited to those required for shallow spread footing or drilled pile construction, and installation of shallow utilities. This report provides updated/supplemental recommendations for drilled pile foundations, earthwork, pavements, and seismic design parameters for design and construction of this project. The remaining conclusions and recommendations presented in our November 12, 2008 geotechnical engineering report and the 1996 GeoEngineers report are still applicable to the project. 134324/SEA13L0271 Copyright 2013 Kleinfelder Page 1 of 8 July 5, 2013 14710 NE 87th Street, Suite 100 Redmond, WA 98052 p 1425.636.7900 f 1425.636.7901 RECOMMENDATIONS Drilled Pile Foundations The proposed canopy for the fuel facility expansion may be supported on shallow spread footings per the recommendations of the prior geotechnical report. However, we understand that shallow drilled piles may be preferred to minimize excavation requirements and disruption to operations. We have assumed that 36 -inch -diameter piles approximately 12 to 15 feet long are appropriate, but can provide recommendations for other pile foundation if needed. Due to the relatively low vertical loads, we anticipate that lateral loads will control shaft length. Recommendations for the design and construction of drilled pile foundations are presented below. Axial Capacity The downward axial capacity of drilled piles may be computed based on an allowable skin friction capacity of 75 pounds per square foot, per foot of length. For example, the allowable skin friction capacity is 375 pounds per square foot at a depth of 5 feet and 1125 pounds per square foot at a depth of 15 feet. The upper one foot of the drilled pile should be neglected when computing the axial capacity of the piles. The upward capacity may be taken as one-half the downward allowable axial capacity. A one-third increase in the allowable capacities may be used for wind or seismic Toads. Lateral Loads For computing the lateral resistance, we recommend that a lateral soil bearing pressure of 200 psf per foot of depth below grade. The lateral soil bearing pressure should not exceed 2,500 psf. Since drilled piles are isolated pole foundations, the allowable lateral soil bearing pressure may be increased by a factor of 2 for short-term lateral loads provided the structure will not be adversely affected by % inch of movement at the ground surface. Settlement Settlement of the proposed canopy supported on drilled piles, as recommended, is estimated to be less than 1/2 inch. Installation of Drilled Pile Foundations The performance and capacities of piles can be influenced significantly by the selected construction methods and procedures used. Construction methods that create large zones of disturbance around the drilled shafts can lead to lower than expected skin friction due to excessive stress relief around the shaft length. Drilling of the pile shafts should be accomplished using heavy-duty excavation equipment. Sloughing of the side walls is likely to occur, particularly below the groundwater table, and temporary casing may be required. Permanent casing should not be used without prior approval by 134324/SEA13L0271 Page 2 of 8 Copyright 2013 Kleinfelder July 5, 2013 KLEINFELDER 14710 NE 87th Street, Suite 100 Redmond, WA 98052 p 1425.636.7900 f 1425.636.7901 Kleinfelder. Additionally, if water seepage is encountered during installation of shafts, dewatering and tremie seals may also be necessary. It should be noted that groundwater was encountered at a depth of about 10 to 12 feet during the original warehouse exploration. The groundwater level will fluctuate and could be encountered shallower. Concrete should be placed immediately after drilling of the hole is complete. The concrete should be pumped to the bottom of the drilled shaft using a down -hole tremie. If steel casing is used, the casing should be removed as the concrete is placed. Construction Observation Observation of the installation of the drilled piles should be performed by a representative of Kleinfelder so that modifications can be made, as necessary, during installation. Earthwork Site Preparation The three southern -most refueling islands and canopy will be extended to the west in an area currently occupied by pavement. Drive access to the fuel facility will be modified and include paving part of an existing landscape island. Existing pavement, curb and irrigation systems should be demolished as part of site preparation. Asphalt concrete and Portland cement concrete (PCC) pavements can be recycled for use as base course, provided they comply with the required gradation specifications outlined below. Following demolition, all vegetation and any trash or remaining debris should be removed and properly disposed of offsite. After excavations have been completed to the planned subgrade elevations, including footing elevations, but before placing fill, the entire exposed subgrade should be evaluated by a Kleinfelder representative. When and where appropriate, based on site and excavation constraints, subgrade should be evaluated by proof -rolling with two passes of a fully -loaded dump truck or water truck. Subgrade may also be evaluated by hand probing where proof -rolling is not practical. Any soft, yielding or unsuitable areas identified by the Kleinfelder representative should be over -excavated and replaced with compacted structural fill. If excessively soft or yielding subgrade soils are encountered, following over -excavation and prior to placement of structural fill, the subgrade should be covered with a geotextile fabric conforming to the requirements of Section 9-33 Geotextile for Soil Stabilization of the Washington Department of Transportation (WSDOT) Standard Specifications. Fill Material Materials placed below pavements or structures should be structural fill. Fill materials should consist of well -graded, free -draining sand and/or gravel, free from organic matter or any other deleterious materials. The maximum particle size for structural fill is 3 inches. We estimate the majority of existing fill soils will consist of sand with varying 134324/SEA13L0271 Copyright 2013 Kleinfelder Page3of8 July 5,2013 KLEINFELDER 14710 NE 87th Street, Suite 100 Redmond, WA 98052 p 1425.636.7900 f 1425.636.7901 amounts of silt and gravel or silt with varying amounts of sand and gravel. Imported structural fill should conform to Section 9-03.14(1), Gravel Borrow, of the WSDOT Standard Specifications. Fill soils should be compacted to at least 95 percent of the soils maximum dry unit weight as determined per ASTM D1557 and in the accordance with standard Costco design requirements. Structural fill should be moisture conditioned to within 3 percent of the optimum moisture content prior to compaction and should be placed in maximum 8 -inch thick lifts. Existing on-site soils generally consist of sand with varying amounts of silt and gravel or silt with varying amounts of sand and gravel. These existing soils are moisture sensitive and will likely be too wet to compact. In addition, elevated moisture contents should be expected in and adjacent to landscape areas. On-site soils may be suitable for re -use as structural fill during dry weather but would require drying. Due to a limited construction area and schedule, drying soils on site may not be practical and we recommend construction documents include a unit cost for import of granular structural fill and export of on-site materials in the event that on-site soils required drying and cannot be practically dried during construction. Pavements We understand pavements in the gas station expansion area will consist of heavy duty flexible asphalt and rigid Portland Cement Concrete (PCC) pavements. We developed pavement design recommendations using Costco Wholesale Development Requirements. The following traffic loading assumptions provided in the Costco development guidelines, Version 2012, dated July 20, 2012: • A pavement design life of 20 years; and • Heavy duty pavements will be subject to a 30 tractor -trailer truck trips per day (Traffic Index of 7.0) Based on soils observed in the previous explorations, we anticipate that the subgrade will be fine sands to silty sands. Our analyses assumed an average subgrade resilient modulus of 8,000 pounds per square inch (psi) and that the subgrade will not be saturated. Asphalt Concrete Pavement The following table presents asphalt concrete pavement sections for the traffic index noted above. 134324/SEA13L0271 Copyright 2013 Kleinfelder Page 4 of 8 July 5, 2013 KLEINFELDER 14710 NE 87th Street, Suite 100 Redmond, WA 98052 p 1425.636.7900 f 1425.636.7901 Heavy Duty Asphalt Concrete Pavement Sections Asphalt Concrete (inches) Aggregate Base (inches) 4.0 6.0 Aggregate base should conform to the requirements of Section 9-03.9(3) Crushed Surfacing Top Course or Base Course of the WSDOT Standard Specifications and be compacted to at least 95 percent relative compaction per ASTM D1557. A Performance Grade (PG) binder of 64-16 should be used for the project. This recommendation was developed in accordance with Costco Wholesale Specifications Section 02741. Air temperature data for the five data stations nearest the project site was reviewed and the PG was selected using the FHWA program LTTPBind Version 3.1. The high-end temperature rating was selected as one grade higher than the 98 percent reliability binder and the low-end temperature was selected to provide a reliability of at least 90 percent. Portland Cement Concrete Pavement The following table presents PCC pavement sections for the traffic index noted above. Heavy Duty PCC Pavement Sections PCC (inches) Aggregate Base (inches) 6.0 6.0 We based the PCC pavement sections on design procedures from the Portland Cement Association (PCA) Thickness Design for Pavements and the recommended subgrade conditions. The concrete should possess a minimum modulus of rupture of 600 psi and the mix should be designed in accordance with the PCA manual. Aggregate base should conform to the requirements of Section 9-03.9(3) Crushed Surfacing Top Course or Base Course of the WSDOT Standard Specifications and be compacted to at least 95 percent relative compaction per ASTM D1557. Longitudinal and transverse joint spacing should not exceed 12 feet and 15 feet, respectively. Joint details should conform to PCA guidelines. Expansion joints in concrete slabs should be sealed with petroleum resistant sealant to prevent minor releases from impacting subsurface soil. Construction Considerations The pavement sections provided above are contingent on the following recommendations being implemented during construction. 134324/SEA13L0271 Copyright 2013 Kleinfelder Page 5 of 8 July 5, 2013 KLEINFELDER 14710 NE 87th Street, Suite 100 Redmond, WA 98052 p 1 425.636.7900 f 1425.636.7901 • A PG binder of 64-16 should be used in the asphalt concrete mix for the project. • Subgrade and crushed rock fill should be compacted to at least 95 percent relative compaction per ASTM D1557. Moisture contents should be maintained 3 percent of optimum during compaction. • Subgrade soils should be in a stable, non -pumping condition at the time the aggregate base materials are placed and compacted. • Asphalt paving materials and placement methods should meet current Costco Wholesale Specifications Section 02741. • Adequate drainage (both surface and subsurface) should be provided such that the subgrade soils and aggregate base materials are not allowed to become wet. Seismic Design Considerations Liquefaction Based on the presence of loose sand and silt below the groundwater table, the liquefaction potential of the site soils is high. Due to the relatively light foundation Toads and approximate 10 foot depth to groundwater, it is our opinion that a sufficient layer of unsaturated, and therefore non -liquefiable, soil exists below the foundations to prevent a bearing capacity failure in the event of liquefaction. However, in the event of a strong earthquake and significant liquefaction, some settlement of the ground surface is expected post -liquefaction. Ground surface settlement was estimated using methodologies proposed by Youd, T.L., et al. (2001), Seed, R.B., et al. (2003), and ldriss & Boulanger (2008). Under the 2,475 -year design event, total settlement of liquefiable layers at the site was estimated to range from approximately 5 to 10 inches. Potentially liquefiable layers may be present below the depth of exploration (51.5 feet) that could result in additional settlement. Based on the nature of the fuel facility structures, it is our opinion that liquefaction and the possible resulting structural settlement do not present a life -safety hazard. However, we recommend that flexible connections or piping be used, where possible. 2009 IBC Seismic Design Criteria In accordance with the 2009 International Building Code (IBC), the Seismic Design Category for a structure may be determined in accordance with Section 1613.5.6 of the 2009 IBC. According to the 2009 IBC, sites subject to liquefaction should be classified as Site Class F, which requires a site response analysis. However, ACSE7-05, which is the basis for the 2009 IBC, suggests that for a short period (less than % second) structure on liquefiable soils, Site Class D or E may be used instead of Site Class F to estimate design seismic loading on the structure. The selection of Site Class D or E is based on the assessment of the site soil profile assuming no liquefaction. We have assumed that the period of the structures will be less than '/2 second. The assumption that the structures have a period of less than 1/2 second should be verified by the project structural engineer. 134324/SEA13L0271 Copyright 2013 Kleinfelder Page6of8 July 5,2013 KLEINFELDER 14710 NE 87th Street, Suite 100 Redmond, WA 98052 p 1 425.636.7900 f 1425.636.7901 Based on an average N -value of 26 blows per foot from boring B-1 and our understanding of the regional geology, we classify the site as Site Class D. The following table summarizes the corresponding 2009 IBC Seismic Design Parameters. 2009 IBC Seismic Design Parameters Design Parameter Recommended Value Site Class D SS 1.397 g S1 0.477 g Fa 1.000 F„ 1.523 SMS 1.397 g SM1 0.727 g SDS 0.931 g SD1 0.484 g CLOSURE Unless specifically superseded in this supplemental letter report, the recommendations in the above -referenced geotechnical reports remain applicable. This document is intended to provide site specific recommendations. It cannot be considered an independent document, as it does not contain adequate background information. This document is directed only to the personnel with detailed knowledge of the subject project. Please attach this supplement to the above -referenced geotechnical reports prepared by Kleinfelder, Inc. and GeoEngineers. The conclusions and recommendations presented in this supplemental letter were prepared under the conditions and limitations presented in our November 12, 2008 geotechnical report. This work was performed in a manner consistent with that level of care and skill ordinarily exercised by other members of Kleinfelder's profession practicing in the same locality, under similar conditions, and at the date the services are provided. Our conclusions, opinions, and recommendations are based on a limited number of observations and data. It is possible that conditions could vary between or beyond the data evaluated. Kleinfelder makes no other representation, guarantee, or warranty, express or implied, regarding the services, communication (oral or written), report, opinion, or instrument of service provided. 134324/SEA13L0271 Copyright 2013 Kleinfelder Page 7 of 8 July 5, 2013 KLEINFELDER 14710 NE 87th Street, Suite 100 Redmond, WA 98052 p 1425.636.7900 f 1425.636.7901 We appreciate the opportunity to be of professional service to you on this project. If you have any questions or require additional information, please do not hesitate to contact Marcus Byers at (425) 301-0106 or Brian Crystal, Kleinfelder's Project Manager, at (949) 585-3113, or Andrew Franks, Kleinfelder's Senior Client Account Manager for Costco, at (480) 650-4905. Respectfully submitted, KLEINFELDER WEST, INC. Marcus Byers, PE, P.Eng Principal Geotechnical Engineer cc: Brian Crystal, Kleinfelder 134324/SEA13L0271 Copyright 2013 Kleinfelder Page 8 of 8 July 5, 2013 KLEINFELDER 14710 NE 87th Street, Suite 100 Redmond, WA 98052 p 1 425.636.7900 f 1 425.636.7901 0400 TO: City of Tukwila Department of Community Development File Number L13-038 PL13-035 (Project #) LAND USE PERMIT ROUTING FORM Building Planning Public Works ire Dept. Police Dept. Parks/Rec Project: Costco Fueling Facility Expansion Address: 451 Costco Drive, Tukwila, WA 98188 (parcel #3623049107) Date transmitted: August 1, 2013 Response requested by: August 7, 20137(We are trying to get this project on the August BAR agenda) Staff coordinator: Jaimie Reavis/Courtney Johnson Date response received: REVIEWERS: Please specify how the attached plans conflict with your ADOPTED development regulations, including citations. Be specific in describing the types of changes you want made to the plans. When referencing codes, please identify the actual requirement and plan change needed. The Planning Division review does not supplant each department's ability to administer its own regulations and permits. However, project consistency at the Planning review stage is important to minimize significant later design changes. More than minimal design changes require further Planning Commission review, even if alteration is required to satisfy a City requirement. This further review is typically a minimum 60 -day process. Requirements based on SEPA (e.g., not required by an adopted development regulation) MUST identify the impact being mitigated, the policy basis for requiring mitigation, and the method used to calculate the mitigation required. Calculations of project impacts and the mitigation required (e.g., water capacity, road level of service analyses, or turning analyses) may be required of the applicant. COMMENTS (Attach additional comment sheets and/or support materials as needed.) ipe\O &1.. • Plan check data CommentUpdate date: 'W\ \ 1_. prepared �7\McS\ 0400 TO: City of Tukwila RECEIVE° Department of Community Development AUG 0 1 2013 TUKVV►u ?UBLIC WORKS LAND USE PERMIT ROUTING FORM File Number L13-038 PL13-035 (Project #) Building I®IPlanning ublic Works Fire Dept. Police Dept. Parks/Rec Project: Costco Fueling Facility Expansion Address: 451 Costco Drive, Tukwila, WA 98188 (parcel #3623049107) Date transmitted: August 1, 2013 Response requested by:(August 7, 20131(We are trying to get this project on the August BAR agenda) Staff coordinator: Jaimie Reavis/Courtney Johnson Date response received: REVIEWERS: Please specify how the attached plans conflict with your ADOPTED development regulations, including citations. Be specific in describing the types of changes you want made to the plans. When referencing codes, please identify the actual requirement and plan change needed. The Planning Division review does not supplant each department's ability to administer its own regulations and permits. However, project consistency at the Planning review stage is important to minimize significant later design changes. More than minimal design changes require further Planning Commission review, even if alteration is required to satisfy a City requirement. This further review is typically a minimum 60 -day process. Requirements based on SEPA (e.g., not required by an adopted development regulation) MUST identify the impact being mitigated, the policy basis for requiring mitigation, and the method used to calculate the mitigation required. Calculations of project impacts and the mitigation required (e.g., water capacity, road level of service analyses, or turning analyses) may be required of the applicant. COMMENTS (Attach additional comment sheets and/or support materials as needed.) CS „c..4t � •� Pv L —c -epics Corrie✓► rtS ‘4410 Plan check date: Comments prepared by: Update date: ' MEMORANDUM www.ci.tukwila.wa.us Development Guidelines and Design and Construction Standards TO: PLANNING DEPT. — Jaimie Reavis, Planner 1 O04yyl FROM: PUBLIC WORKS DEPT. — David McPherson, Development Engineer David.McPherson(@TukwilaWA.gov DATE: August 2, 2013 SUBJECT: Costco Fueling Facility Expansion 451 Costco Drive TL no. 362304-9107 Design Review and Miscellaneous Comments Public Works has the following comments: Design Review — L13-038 1. Provide a completed Traffic Concurrency Certificate Application and pay a Test Fee in the amount of $1,800.00. Test Fee based on less than 5,000 s.f. gross floor area (Office). (see enclosed application) Miscellaneous Comment 1. A Transportation Impact Fee in the amount of $19,218.78 applies to the future Building permit (or) future Public Works permit. Fee is based on 6 new Vehicle Fueling Positions (VFP) in Zone 1 times $3,203.13 per (VFP). Page 1 of 1 CITY OF TUKWIL _ Public Works Department Permit Center 6300 Southcenter Blvd., Suite 100 Tukwila, WA 98188 http://www.TukwilaWA.gov Permit No. Project No. Date Application Accepted: Date Application Expires: (For office use only) TRAFFIC CONCURRENCY CERTIFICATE APPLICATION Applications and plans must be complete in order to be accepted for plan review. Applications will not be accepted through the mail or by fax. **Please Print** SITE LOCATION King Co. Assessor's Tax No.: Site Address: Suite Number: Tenant Name: PROPERTY OWNER Name: Name: Address: Address: City: State: City: State: Zip: CONTACT PERSON — person receiving all project communication Name: Address: City: State: Zip: Phone: Fax: Email: Scope of Work (please provide detailed information): Type of Existing Use: Size of Existing Use: Is existing building vacant? Type of work: ❑ New ❑ Addition Type of Proposed Use: ❑ Change of use For how long? ❑ Remodel Size of Proposed Use: ❑ Tenant Improvement PERMIT APPLICATION NOTES Expiration — The concurrency test notice shall expire 90 days after issuance unless the applicant submits a SEPA or other documentation pursuant to TMC 21.04. If the submittal is made within 90 days, the test notice shall be valid for one calendar year from the date of issuance of the notice. Once the associated development permit or building permit is approved, the final concurrency certificate shall be valid for 2 years or as long as the developer possesses a valid building permit for the development. Extensions may be granted in accordance with TMC 9.50. Transferability — A certificate of concurrency is not transferable to other land, but may be transferred to new owners of the original land. A certificate of concurrency shall apply only to the specific land use, density, and intensity described in the application for a development permit or building permit. I HEREBY CERTIFY THAT I HAVE READ AND EXAMINED THIS APPLICATION AND KNOW THE SAME TO BE TRUE UNDER PENALTY OF PERJURY BY THE LAWS OF THE STATE OF WASHINGTON, AND I AM AUTHORIZED TO APPLY FOR THIS PERMIT. PROPERTY OWNER OR AUTHORIZED AGENT: Signature: Date: Print Name: Day Telephone: Mailing Address: City H:\Applications\Forms-Applications On Line\2012 Applications\Traffic Concurrency Application 2-9-12.docx bh State Zip Page 1 of 2 City of Tukwila Development Application Fees for Concurrency Analysis Fees for Residential Use Fees for Non -Residential Use Unit All Types of Residential 1 Gross Floor Area Industrial 2 Office 3 Retail 4 Eatery 5 Institutional & Port 6 All Other Uses Between 1 and 3 $300 Less than 5,000 $1,000 $1,800 $2,700 $5,400 $500 $1,500 Between 4 and 5 $600 Between 5,001 and 10,000 $1,500 $2,700 $4,050 $8,100 $1,000 $2,000 Between 6 and 10 $1,200 Between 10,001 and 20,000 $2,000 $3,600 $5,400 $10,800 $1,500 $2,500 Between 11 and 15 $2,000 Between 20,001 and 30,000 $3,000 $5,400 $8,100 $10,800 $2,000 $2,500 Between 16 and 20 $3,500 Between 30,001 and 40,000 $4,000 $7,200 $10,800 $10,800 $2,500 $2,500 Between 21 and 25 $5,000 Between 40,001 and 50,000 $5,000 $9,000 $13,500 $10,800 $3,000 $2,500 Between 26 and 30 $6,500 Between 50,001 and 70,000 $6,000 $10,800 $16,200 $10,800 $4,000 $2,500 Between 31 and 40 $8,000 Between 70,001 and 90,000 $7,000 $12,600 $18,900 $10,800 $5,000 $2,500 Between 41 and 60 $10,000 Between 90,001 and 150,000 $8,000 $14,400 $21,600 $10,800 $6,000 $2,500 Greater than 60 $12,000 Between 150,001 and 200,000 $9,000 $16,200 $24,300 $10,800 $7,000 $2,500 Greater than 200,000 $10,000 _ $18,000 $24,300 $10,800 $8,000 $2,500 1 All residential uses defined by the ITE Trip Generation Manual Land Use Codes 200-299, including single family, multi -family, mobile home parks, and shared housing 2 All industrial/agricultural uses defined by the ITE Trip Generation Manual Land Use Codes 100-199, including light and heavy industrial, manufacturing, and warehousing 3 All office, medical, and service related uses defined by the ITE Trip Generation Manual Land Use Codes 600-699, 700-799, and 900-999, including general office, medical facilities, and banks 4 All retail and recreation uses defined by the ITE Trip Generation Manual Land Use Codes 400-499, 800-830 and 837-899, including retail sales, rental sales, athletic clubs, and theaters 5 All food service uses defined by the ITE Trip Generation Manual Land Use Codes 831-836, excluding accessory (stand-alone) drive-through espresso stands (or similar) under 250sf which are assessed $300 6 All institutional and transportation uses defined by the ITE Trip Generation Manual Land Use Codes 000-099 and 500-599, including schools, places of worship, day care, terminals, and transit Traffic Concurrency Application Fee Table.xlsFees Page 2 of 2 0400 City of Tukwila Department of Community Development File Number L13-038 PL13-035 (Project #) LAND USE PERMIT ROUTING FORM TO: ()Building WIPlanning Public Works Fire Dept. Police Dept. Li Parks/Rec Project: Costco Fueling Facility Expansion Address: 451 Costco Drive, Tukwila, WA 98188 (parcel #3623049107) Date transmitted: August 1, 2013 Response requested by: August , 201, (We are trying to get this project on the August"BAR agenda) Staff coordinator: Jaimie Reavis/Courtney Johnson Date response received: REVIEWERS: Please specify how the attached plans conflict with your ADOPTED development regulations, including citations. Be specific in describing the types of changes you want made to the plans. When referencing codes, please identify the actual requirement and plan change needed. The Planning Division review does not supplant each department's ability to administer its own regulations and permits. However, project consistency at the Planning review stage is important to minimize significant later design changes. More than minimal design changes require further Planning Commission review, even if alteration is required to satisfy a City requirement. This further review is typically a minimum 60 -day process. Requirements based on SEPA (e.g., not required by an adopted development regulation) MUST identify the impact being mitigated, the policy basis for requiring mitigation, and the method used to calculate the mitigation required. Calculations of project impacts and the mitigation required (e.g., water capacity, road level of service analyses, or turning analyses) may be required of the applicant. COMMENTS (Attach additional comment sheets and/or support materials as needed.) �✓ �� / H -5- f /-Ta ( f'l�a 6* `'e4v<<-rc.-e /Z Eir6 11 C'()%J . Plan check date: F4 --/I Comments prepared by: Update date: eitcq of Jafituita Department Of Community Development AFFIDAVIT OF DISTRIBUTION I, _Teri Svedahl , HEREBY DECLARE THAT: x Notice of Application Notice of Decision x Notice of Public Hearing Mailer's signature: / Notice of Public Meeting f% Determination of Non- Significance Mitigated Determination of Non - Significance Determination of Significance & Scoping Notice Short Subdivision Agenda Notice of Application for Shoreline Mgmt Permit Shoreline Mgmt Permit Board of Appeals Agenda Packet Board of Adjustment Agenda Packet Official Notice Notice of Action x Design Review notice Other: Was mailed to each of the addresses listed/attached on this _7th day of _August , 2013 Project Name: Costco Fueiling Facility Expansion Project Number: P113-035 Associated File Number (s): L13-038 Mailing requested by: Jaimie avis Mailer's signature: / 4i -7,,p f% W:\USERS\TERI\TEMPLATES-FORMS\AFFIDAVIT OF DISTRIBUTION.DOC City of Tukwila Notice of Application and Notice of Hearing Costco Fueling Facility Expansion Design Review Location: 451 Costco Drive (tax parcel #362304-9107) File #'s: L13-038 (Design Review), PL13-035 (Project #) Applicant: John Ellingsen, Barghausen Consulting Engi- neers, Inc. Property Owner: Costco Wholesale Corporation Project Planner: Jaimie Reavis, 206-431-3659 Project Description: Public Hearing Design Review for expansion of the Tukwila Costco fueling facility to include an additional row of gasoline dispensers, a 29'x88' fueling is- land canopy extension and associated site improvements. SEPA Review: This project is exempt from State Environ- mental Policy Act review per WAC 197-11-800 (2) (E) Other Minor New Construction. t.. _.nents and Appeals: The application is available for review at the City of Tukwila, Department of Com- munity Development (DCD), located at 6300 Southcenter Blvd #100. Your written comments on the project are requested and can be delivered to DCD at the address above. Written comments or requests to receive noti- fication of the final decision on the design review application must be received within 14 days of the Notice of Application; that is by 5:OOpm on Wednesday, August 21, 2013. Notice of Hearing: You are welcome to attend and provide testimony on the application at a public hearing on the project scheduled for August 22, 2013 at 6:30 p.m. The hearing will take place at 6200 Southcenter Blvd, Tukwila, WA. Please call 206-431-3659 or 206-431-3670 to confirm the hearing date. You may request a copy of any decision, information on hearings, and your appeal rights by calling 206-431-3659. City of Tukwila Department of Community Development 6300 Southcenter Blvd., Ste 100 Tukwila, WA. 98188 AGENCY LABELS O -a Gas 5i&W1 Pus -v3' ( ) US Corps of Engineers ( ) Federal HWY Admin ( ) Federal Transit Admin, Region 10 ( ) Dept of Fish & Wildlife Section 1 FEDERAL AGENCIES ( ) US Environmental Protection Agency (E.P.A.) ( )US Dept of HUD ( ) National Marine Fisheries Service Section 2 WASHINGTON STATE AGENCIES ( ) Dept of Social & Health Services ( ) Dept of Ecology NW Regional Office, Shoreland Div. SHORELINE NOD REQUIRES RETURN RECEIPT Dept of Ecology, SEPA **Send Electronically ( ) Office of Attorney General ( ) Office of Hearing Examiner ( ) Office of Archaeology ( ) Transportation Department (WSDOT NW) ( ) Dept of Natural Resources ( ) Office of the Governor ( ) WA State Community Development ( ) WA Fisheries & Wildlife, MillCreek Office ( ) WA Fisheries & Wildlife, Larry Fisher, 1775 12th Ave NW Ste 201, Issaquah WA 98027 ( ) KC Boundary Review Board ( ) Fire District # 11 ( ) Fire District # 2 ( ) KC Wastewater Treatment Div ( ) KC Dept of Parks & Recreation KC Assessor's Office Section 3 KING COUNTY AGENCIES ( ) Health Department ( ) Port of Seattle ( ) KC Dev & Enviro Services-SEPA Info Center ( ) KC Metro Transit Div-SEPA Official, Environmental Planning ( ) KC Dept of Natural Resources ( ) KC Dept of Natural Resources, Andy Levesque ( ) KC Public Library System ( ) Foster Library ( ) Renton Library ( ) Kent Library ( ) Seattle Library Section 4 SCHOOLS/LIBRARIES ( ) Westfield Mall Library ( ) Tukwila School District ( ) Highline School District ( ) Seattle School District ( ) Renton School District ( ) QWEST Communications ( ) Seattle City Light Puget Sound Energy Highline Water District ( ) Seattle Planning &Dev/Water Dept ( ) Comcast Secti on 5 UTILITIES ( ) BP Olympic Pipeline ( ) Val-Vue Sewer District ( ) Water District # 20 ( ) Water District # 125 ( ) City of Renton Public Works ( ) Bryn Mawr-Lakeridge Sewer/Water Dist ( ) Seattle Public Utilities ( ) Allied Waste Services ( ) Tukwila City Departments ( ) Public Works ( ) Fire ( ) Police ( ) Finance ( ) Planning ( ) Building ( ) Parks & Rec ( ) Mayor ( ) City Clerk Section 6 CITY AGENCIES ( ) Kent Planning Dept ( ) Renton Planning Dept ( ) City of SeaTac ( ) City of Burien ( ) City of Seattle ( ) Strategic Planning *Notice of all Seattle Related Projects ( ) Puget Sound Regional Council ( ) SW KC Chamber of Commerce ( ) Muckleshoot Indian Tribe * ( ) Cultural Resources ( ) Fisheries Program ( ) Wildlife Program ( ) Duwamish Indian Tribe * Section 7 OTHER LOCAL AGENCIES ,(%4 Puget Sound Clean Air Agency ( ) Sound Transit/SEPA ( ) Duwamish River Clean Up Coalition * ( ) Washington Environmental Council ( ) People for Puget Sound * ( ) Futurewise * send notice of all applications on Green/Duwamish River ( ) Seattle Times ( ) South County Journal Section 8 MEDIA ( ) Highline Times ( ) City of Tukwila Website P:Admin\Admin Forms\Agency Checklist Public Notice Mailings For Permits SEPA MAILINGS Mail to: (comment period starts on date of mailing) Dept. of Ecology Environmental. Review Section *Applicant *Other agencies as necessary (checked off on attached list) *Any parties of record * send only the staff report, site plan and the SEPA Determination KC Transit Division — SEPA Official would like to receive information about all projects that might affect transit demand Tribes — For any application on the Green/Duwamish River, send the checklist and a full set of plans with the Notice Of Application Send These Documents to DOE: SEPA Determination (from PermitsPlus) Findings (staff report, usu. with MDNS) SEPA Checklist (filled out by applicant) Drawings/Plans of project (site plan, elevations, etc. from PMT's) Affidavit of Distribution (notice was mailed or sent to newspaper) SHORELINE MAILINGS: Notice of Application for a Substantial Development Permit must be mailed to owners and to property owners within 500 feet of subject property, comments are due 30 days after the notice of application is mailed/posted. The Notice of Application for a Shoreline Substantial Development Permit must include a statement that any person desiring to submit written comments on the application or desiring to receive notification of the final decision on the application may do so within 30 days of the Notice of Application. If a hearing will be held on the application, the hearing notice must include the information that written comments may be submitted, or oral presentation made at the hearing. Notice is sent to Ecology's NW Regional Office Shorelands & Environmental Assistance Program. Shoreline Permit Notice of Decision: Mail to: (within 8 days of decision; 21 -day appeal period begins date of filing with DOE) — Notice to DOE must be by return receipt requested mail (this requirement included in SSB 5192, effective 7-22-11). Department of Ecology Shorelands Section, NW Regional Office State Attorney General *Applicant *Indian Tribes *Other agencies as necessary (checked off on attached list). *Any parties of record * send only the staff report, site plan and the SEPA Determination Send These Documents to DOE and Attorney General: Permit Data Sheet Shoreline Substantial Development Permit (printed out from PermitsPlus) Findings (staff report or memo) Shoreline Permit Application Form (filled out by applicant) Drawings/Plans of project (site plan, elevations, etc. from PMT's) - Site plan, with mean high water mark & improvements — Cross-sections of site with structures & shoreline — Grading Plan — Vicinity map SEPA determination (3 -part from Sierra) Findings (staff report or memo) SEPA Checklist (filled out by applicant) Any background studies related to impacts on shoreline Notice of Application Affidavit of Distribution (notice was mailed) P:Admin\Admin Forms\Agency Checklist Teri Svedahl From: Teri Svedahl Sent: Tuesday, August 06, 2013 11:49 AM To: tamara.sacayanan@ecy.wa.gov Cc: Jaimie Reavis Subject: FW: Costco -Tukwila NOA & NOH Attachments: NOA_Costco Gas Station DR_L13-038_PL13-035 (2).pub My apologies. Please disregard last email. The notice is now attached. Teri, Svec a hVi Administrative Support Technician City of Tukwila - Building & Planning Department 6300 Southcenter Boulevard - Ste 100 Tukwila WA 98188 Teri.Svedahl@TukwilaWA.gov The City of opportunity, the community of choice. From: Teri Svedahl Sent: Tuesday, August 06, 2013 11:48 AM To: tamara.sacayanan@aecy.wa.gov Cc: Jaimie Reavis Subject: Costco -Tukwila NOA & NOH Attached is a combined Notice of Application and Notice of Hearing for a COSTCO project in the City of Tukwila. No SEPA Checklist was required on this. Thank you Teri/ SvecthV Administrative Support Technician City of Tukwila - Building & Planning Department 6300 Southcenter Boulevard - Ste 100 Tukwila WA 98188 Teri.Svedahl@TukwilaWA.gov The City of opportunity, the community of choice. 1 NAME TUKWILA CITY OF TERRENO 17600 WVH LLC Costco Petschl Kohn Leuthold PROLOGIS TLF(ANDOVER) LLC UNION PACIFIC CORP GRAY CAT COLLECTIVE LLC Klein NATIONAL BEVERAGE CORP HILL INVESTMENT COMPANY UNITED RENTALS INC SCIOLA FAMILY PROPERTIES LL HD DEVELOPMENT OF MARYLAND TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER ADDRESS 6200 SOUTHCENTER BLVD 101 MONTGOMERY ST # 200 999 LAKE DR 1150 ANDOVER PARK E 14915 237TH PL SE 7275 W MERCER WAY 4 EMBARCADERO CENTER # 3RD PO BOX 2500 1940 124TH AVE NE STE A101 5360 LANSDOWNE LN 8100 SW 10TH ST STE 4000 PO BOX 700 13455 NOEL RD STE 1900 17830 W VALLEY HWY PO BOX 105842 1228 ANDOVER PARK E 6810 S 180TH ST 17800 W VALLEY HWY 1224 ANDOVER PARK E 1227 ANDOVER PARK E 17750 W VALLEY HWY 1210 ANDOVER PARK E 441 COSTCO DR 17700 W VALLEY HWY 1201 ANDOVER PARK E 17600 W VALLEY HWY 1130 ANDOVER PARK E 400 COSTCO DR 1097 ANDOVER PARK E 1083 ANDOVER PARK E 1120 ANDOVER PARK E 1079 ANDOVER PARK E 1095 ANDOVER PARK E CITY ST TUKWILA WA SAN FRANCISCO CA ISSAQUAH WA TUKWILA WA ISSAQUAH WA MERCER ISLAND WA FL SAN FRANCISCO CA BROOMFIELD CO BELLEVUE WA MERCER ISLAND WA PLANTATION FL MERCER ISLAND WA DALLAS TX TUKWILA WA ATLANTA GA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA ZIP 98188 94104 98027 98188 98027 98040 94111 80020 98005 98040 33324 98040 75240 98188 30339 98188 98188 98188 98188 98188 98188 98188 98188 98188 98188 98188 98188 98188 98188 98188 98188 98188 98188 TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER TUKWILA COMMUNITY MEMBER 1077 ANDOVER PARK E 1075 ANDOVER PARK E 1091 ANDOVER PARK E 1073 ANDOVER PARK E 1085 ANDOVER PARK E 1071 ANDOVER PARK E 1208 ANDOVER PARK E 1206 ANDOVER PARK E 1226 ANDOVER PARK E 451 COSTCO DR TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA TUKWILA WA 98188 98188 98188 98188 98188 98188 98188 98188 98188 98188 AGENCY HOME DEPOT TACO TIME JIFFY LUBE KC ASSESSOR'S OFFICE PUGET SOUND ENERGY PUGET SOUND CLEAN AIR AGENCY WA DEPT OF ECOLOGY ATTN Store Manager Store Manager Store Manager ACCOUNTING DIVISION SEPA REVIEW SEPA REVIEW ADDRESS 6810 S 180TH Street 6820 S 180th Street 6816 S 180th Street 500 4th AVE, RM# 709A PO BOX 90868 1904 3rd AVENUE, STE 105 PO BOX 47703 CITY ST Tukwila WA Tukwila WA Tukwila WA SEATTLE WA BELLEVUE WA SEATTLE WA OLYMPIA WA ZIP 98188 98188 98188 98104 98009 98101 98504 sepaunit@ecy.wa.gov 10mb max July 29, 2013 City of Tukwila Jim Haggerton, Mayor Department of Community Development Jack Pace, Director NOTICE OF COMPLETE APPLICATION John Ellingsen Barghausen Consulting Engineers, Inc. 18215 72nd Ave S Kent, WA 98032 RE: Tukwila Costco Fueling Facility Expansion Public Hearing Design Review (L13-038) Dear Mr. Ellingsen: Your application for a Public Hearing Design Review (L13-038) for the property located at 451 Costco Drive in Tukwila is considered complete on July 29, 2013 for the purposes of meeting state mandated time requirements. The determination of complete application does not preclude the ability of the City to require that you submit additional plans or information, if in our estimation such information is necessary to ensure the project meets the substantive requirements of the City or to complete the review process. This notice of complete application applies only to the permits identified above. It is your responsibility to apply for and obtain all necessary permits issued by other agencies. It is our understanding that Fast Signs will be manufacturing and installing the public notice board for this project. The City of Tukwila will coordinate the public notice mailing with installation of the public notice board within the next 14 days. Once the public notice board is installed, the public comment period for this project will be 14 days. Please feel free to contact me with any questions at Jaimie.Reavis@TukwilaWA.gov or (206) 431-3659. Sincerely, y, Jaimie Reavis Assistant Planner 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone 206-431-3670 • Fax: 206- 431-3665 Parcel number Name Street Address City, St, Zip 2523049016 City of Tukwila 6300 Southcenter Boulevard Tukwila WA 98188 2523049017 Terreno 17600 WVH LLC 101 Montgomery St #200 San Francisco CA 94104 Current Tenant 17600 West Valley Hwy Tukwila WA 98188 Current Tenant 17616 West Valley Hwy Tukwila WA 98188 Current Tenant 17620 West Valley Hwy Tukwila WA 98188 Current Tenant 17640 West Valley Hwy Tukwila WA 98188 Current Tenant 17660 West Valley Hwy Tukwila WA 98188 Current Tenant 17680 West Valley Hwy Tukwila WA 98188 2523049057 COSTCO WHOLESALE Not Applicable 2523049063 COSTCO WHOLESALE CORPORATIO Not Applicable 2623049089 Petschl's Quality Meats 1150 Andover Park East Tukwila WA 98188 2623049091 Mr. and Mrs. Kohn 14915 237th PI. SE Issaquah WA 98027 Current Tenant 1130 Andover Park East Tukwila WA 98188 2623049098 Mr. Leuthold 7275 West Mercer Way Mercer Island WA 98040 Current Tenant 1120 Andover Park East Tukwila WA 98188 2623049106 Prologis TLF(Andover) LLC C/O Stockbridge Capital GP, 4 Embarcadero Center 33rd FI San Francisco CA 94111 Current Tenant 1085 Andover Park East Tukwila WA 98188 Current Tenant 1091 Andover Park East Tukwila WA 98188 Current Tenant 1095 Andover Park East Tukwila WA 98188 Current Tenant 1097 Andover Park East Tukwila WA 98188 Current Tenant 1071 Andover Park East Tukwila WA 98188 Current Tenant 1073 Andover Park East Tukwila WA 98188 Current Tenant 1075 Andover Park East Tukwila WA 98188 Current Tenant 1079 Andover Park East Tukwila WA 98188 Current Tenant 1083 Andover Park East Tukwila WA 98188 Current Tenant 1077 Andover Park East Tukwila WA 98188 2623049113 UNION PACIFIC CORP PO Box 2500 Broomfield CO 80020 3523049070 Gray Cat Collective LLC C/O Shephard Com Real Estate, 1940 124th Avenue NE, Ste A101 Bellevue WA 98005 Current Tenant 1228 Andover Park East Tukwila WA 98188 3523049071 Mr. KLEIN 5360 Lansdowne Ln Mercer Island WA 98040 Current Tenant 1224 Andover Park East Tukwila WA 98188 3523049072 National Beverage Corp 1227 Andover Park East Tukwila WA 98188 06-18-2013 06-18-2013 3523049075 Gray Cat Collective LLC C/O Shephard Com Real Estate, 1940 124th Avenue NE, Ste A101 Bellevue WA 98005 Current Tenant 1206 Andover Park East Tukwila WA 98188 Current Tenant 1208 Andover Park East Tukwila WA 98188 Current Tenant 1210 Andover Park East Tukwila WA 98188 3523049077 Gray Cat Collective LLC C/O Shephard Com Real Estate, 1940 124th Avenue NE, Ste A101 Bellevue WA 98005 3523049089 COSTCO WHOLESALE CORPORATIO Not Applicable 3523049091 Hill Investment Company PO Box 700 Mercer Island WA 98040 Current Tenant 1201 Andover Park East Tukwila WA 98188 3623049016 City of Tukwila 6300 Southcenter Boulevard Tukwila WA 98188 3623049057 United Rentals, Inc 17700 West Valley Hwy Tukwila WA 98188 3623049060 Sciola Family Properties LLC 17830 West Valley Hwy Tukwila WA 98188 Current Tenant 17800 West Valley Hwy Tukwila WA 98188 3623049074 HD Development of Maryland 6810 South 180th St Tukwila WA 98188 3623049097 Sciola Family Properties LLC 17830 West Valley Hwy Tukwila WA 98188 Current Tenant 17750 West Valley Hwy Tukwila WA 98188 3623049107 COSTCO WHOLESALE CORP Not Applicable 06-18-2013 RADIUS MAP KL E/NFEL DER Bright People. Right Solutions. November 12, 2008 Kleinfelder Project No, 99359 Costco Wholesale c/o MulvaonyG2 1110 112t Ave NE Suite 500 Bellevue, WA 98004 Attention: Mr. Sam Morris 2405 140th Avenue NE, Suite Al 01 Bellevue, WA 98005 pi 425.562.4200 f I 425.562.4201 kleinfelder.com Subject: Geotechnical Engineering Letter Report Proposed Costco Wholesale ARC Lab Remodel and Addition Warehouse No. #190 Tukwila, Washington Dear Sam: This letter transmits one electronic pdf copy of our geotechnical engineering letter report for the proposed addition to the existing Costco Wholesale Optical Facility in Tukwila, Washington. This report was prepared in accordance with our proposal dated November 7, 2008. We appreciate the opportunity to provide geotechnical services to you on this project. Please contact the undersigned at (425) 562-4200, or Andy Franks, Kleinfelder's Senior Client Service Manager at (801) 261-3336 if you have any questions regarding this report, or if we can provide assistance with other aspects of the project. Sincerely, KLEINFELDER WEST, INC. Marcus B. Byer, P.E. Senior Geotechnical Engineer Geotechnical Group Manager Attachment: November 7, 2008, Geotechnical Engineering Letter Report 99359/SEA8R108.doc Copyright 2008 Kleinfelder O LLI N co 0 J Page 1 of 1 November 12, 2008 Prepared for: Mulvanny,G2 Architecture 1110 112 Avenue NE, Suite 500 Bellevue, WA 98004 Prepared by: Steven Flowers, E.I.T Staff Geotechnical Engineer Marcus Byers, P.E. Senior Geotechnical Engineer Geotechnical Group Manager KLEINFELDER WEST, INC. 2405 - 140th Avenue NE Suite A101 Bellevue, WA 98005 Phone: (425) 562-4200 Fax: (425) 562-4201 November 12, 2008 Kleinfelder Project No. 98243 Copyright 2008 Kleinfelder All Rights Reserved KLEINFELDER Bright P opk. Right Solutions. Geotechnical Engineering Letter Report Proposed Costco Wholesale ARC Lab Remodel and Addition Warehouse No. 190 Tukwila, Washington. UNAUTHORIZED USE OR COPYING OF THIS DOCUMENT IS STRICTLY PROHIBITED BY ANYONE OTHER THAN THE CUENT FOR THE SPECIFIC PROJECT. TABLE OF CONTENTS Page EXECUTIVE SUMMARY 1 1.0 INTRODUCTION 3 2.0 SITE AND SUBSURFACE CONDITIONS 5 3.0 CONCLUSIONS AND DESIGN RECOMMENDATIONS 7 4.0 CONSTRUCTION RECOMMENDATIONS 8 5.0 LIMITATIONS 9 LIST OF FIGURES FOLLOWING TEXT Figure 1 — Vicinity Map Figure 2 — Proposed Addition Plan Figure 3 — Previous Site and Exploration Plan LIST OF APPENDICES Appendix A Previous Field Exploration Logs Appendix B Important Information About Your Geotechnical Engineering Report 99359/SEA8R108.doc Page i of i November 12, 2008 Copyright 2008 Kleinfelder EXECUTIVE SUMMARY PROPPOSED ARC LAB ADDITION TUKWILA, WASHINGTON GENERAL: This report presents the results of Kleinfelder's limited geotechnical engineering study performed for the proposed addition to existing Optical Center at Costco Wholesale Warehouse No. 190 in Tukwila, Washington. We understand that the proposed addition will consist of expanding the existing warehouse structure approximately 25 feet to the east adding 2,989 s.f. in area. It is our understanding that the addition will be designed as a similar type of construction as the existing structure, that being shallow spread footings, with the same concrete slab -on -grade floor elevation. PREVIOUS REPORT: In performing our work, we reviewed the geotechnical report prepared for design and construction of the original structure, Geotechnical Engineering Services, Planned Optical Facility, Tukwila, Washington", dated July 1996 prepared by GeoEngineers. The existing report called for a minimum 5 -foot thick surcharge to be placed to mitigate static settlement potential of soft soils. Based on this option, a foundation recommendation of shallow spread footings designed for an allowable bearing pressure of 2,000 psf was provided. We also review a construction summary letter "Summary Letter Construction Monitoring Services Costco Optical Facility, Tukwila, Washington" dated March 10, 1997 prepared by GeoEngineers. This letter confirmed that a surcharge was placed and monitored, but did not give specifics about the location of the surcharge. Based on our conversations with Messrs. Russ Hazard and Sam Morris of MulvannyG2, we understand that Costco Wholesale Construction personnel have verified that the surcharge extended 5 feet beyond the existing structure on the north, west and south sides, and well east of the structure to the gas station area. Based on this information, the planned addition will be constructed within the area that was previously surcharged. SOIL CONDITIONS: Explorations for the existing geotechnical report included four borings. One 511A -foot deep boring was located in the footprint of the existing optical center and three 15 -foot deep borings were located in the existing 99359/SEA8R108.doc Copyright 2008 Kleinfelder Page 1 of 10 November 12, 2008 parking areas. Based on the 1996 report and our understanding of the current facility, the subsurface conditions in the expansion area consist of an asphalt concrete pavement section, fill and native soils ranging from very soft organic silt to dense sand and gravel. Groundwater was reported in the 1996 geotechnical data at a depth of about 10 to 12 feet below the surface. . FOUNDATION RECOMMENDATIONS: Based on the existing report and confirmation that the proposed expansion area is within the previous surcharge, use of shallow spread footings sized for an allowable bearing pressure of 2,000 psf is appropriate. 99359/SEA8R108.doc Page 2 of 10 November 12, 2008 Copyright 2008 Kleinfelder 1.0 INTRODUCTION This report presents the results of Kleinfelder's limited geotechnical engineering study for the proposed expansion of the optical facility at Costco warehouse #190 located at 441 Costco Drive in Tukwila, WA. The existing optical facility is 34,789 s.f. in area. The expansion will include a remodel of 6,782 s.f. as well as an addition of 2,989 s.f. The general location of the project is shown on the Vicinity Map, Figure 1. The purpose of our study was to review existing geotechnical information for the site, verify that shallow spread footings are appropriate, and provide updated geotechnical recommendations, as appropriate. Our scope of services was consistent with that presented in our proposal dated November 7, 2008. Based on information provided to us by MulvannyG2, we understand that the proposed addition will consist of expanding the existing optical facility structure approximately 25 feet to the east, which will add approximately 2,989 additional s.f. to the warehouse. The planned expansion is shown on the Site and Exploration Plan, Figure 2, which also shows the location of previous explorations in the expansion area. In performing our work, we reviewed the geotechnical report prepared for design and construction of the original structure, Geotechnical Engineering Services, Planned Optical Facility, Tukwila, Washington", dated July 1996 prepared by GeoEngineers. The existing report called for a minimum 5 -foot thick surcharge to be placed to mitigate static settlement potential of soft soils. Based on this option, a foundation recommendation of shallow spread footings designed for an allowable bearing pressure of 2,000 psf was provided. We also review a construction summary letter "Summary Letter Construction Monitoring Services Costco Optical Facility, Tukwila, Washington" dated March 10, 1997 prepared by GeoEngineers. This letter confirmed that a surcharge was placed and monitored, but did not give specifics about the location of the surcharge. Based on our conversations with Messrs. Russ Hazard and Sam Morris of MulvannyG2, we understand that Costco Wholesale Construction personnel have verified that the surcharge extended 5 feet beyond the existing structure on the north, west and south sides, and well east of the structure to the gas station area. Based on this information, the planned addition will be constructed with the area that was previously surcharged. The conclusions and recommendations presented in this report are based on this information. If the addition were to extend into an area that was not previously 99359/SEA8R108.doc Copyright 2008 Kleinfelder Page 3 of 10 November 12, 2008 surcharged, significant static settlement could occur resulting in cracking and damage to the addition and adjacent portions of the existing facility. 99359/SEA8R108.doc Page 4 of 10 November 12, 2008 Copyright 2008 Kleinfelder 2.0 SITE AND SUBSURFACE CONDITIONS The existing optical center is located to the south of the Costco Wholesale Warehouse. It is bordered to the south by Home Depot, on the west by a one story building, and to the north by Costco Drive. The proposed addition is shown on the Proposed Addition Plan, Figure 2. A Kleinfelder geotechnical engineer visited the site on November 7, 2008, to observe the existing optical center and the area of the proposed expansion. We did not observe any obvious signs of distress such as cracking that would indicate performance issues with the existing foundation system. The Previous Site and Exploration Plan, Figure 3, shows the locations of explorations completed as part of the previous geotechnical engineering study. Explorations included one 51% -foot deep boring located in the footprint of the existing optical center and three 15 -foot deep borings located in the parking areas. Based on these previous explorations, the existing report, and confirmation that the surcharge extended beyond the planned addition, it is our opinion that additional explorations are not necessary. Logs of the four previous explorations are presented in Appendix A. The laboratory test results of these explorations were not available to us at the time of this report. Based on the previous geotechnical report and our surface observations, the subsurface conditions in the area of the addition consist of: PAVEMENT: We anticipate about three inches of asphalt concrete pavement underlain by about four inches of crushed rock will be encountered where the existing parking lot is demolished. NATIVE SOILS: Native soils underlay the pavement section. Our understanding of the native soils is based on borings performed by GeoEngineers in 1996: FILL: Approximately 10 to 15 feet of medium dense to dense sand with varying amounts of silt and gravel or stiff silt with varying amounts of sand and gravel. ALLUVIUM: About 24 feet of alluvial soils underlay the fill soil to a depth of about 38 feet. The alluvial soils consist of soft to medium stiff silt and silty sand with varying amounts of organic material. 99359/SEA8R108.doc Copyright 2008 Kleinfelder Page 5 of 10 November 12, 2008 . DENSE SAND: The alluvium is underlain by dense to very dense sand to the maximum extent of the 1996 B-1 exploration. Silt lenses were observed in the sand deposits. Groundwater was reported at depths ranging from 10.4 to 12 feet below the ground surface during the 1996 exploration. Groundwater levels are approximate and will fluctuate seasonally and based on precipitation, and may have changed since the 1996 report was conducted. 99359/SEA8R108.doc Copyright 2008 Kleinfelder Page 6 of 10 November 12, 2008 3.0 CONCLUSIONS AND DESIGN RECOMMENDATIONS The expansion area can be designed based on the general recommendations presented in the previous geotechnical report. Specific recommendations are as follows: FOUNDATION RECOMMENDATIONS: Foundations Toads can be supported on conventional shallow spread footings sized for an allowable bearing pressure of 2,000 psf. Continuous and isolated footings should have a minimum width of 18 and 24 inches, respectively. For frost protection, exterior footings should extend at least 18 inches below the exterior finished grade. Where new footings are constructed adjacent to existing footings, we recommend that the new footings be structurally connected to the existing footings to minimize potential for differential settlement as the new foundations are loaded. We anticipate that total settlements of footings placed on properly prepared subgrade will be less than 1 inch and differential settlements Tess than 1/2 inch over 50 feet. • SEISMIC DESIGN CRITERIA: In accordance with the 2006 IBC, we recommend Site Class D. Though the site soils contain some layers that may liquefy during and earthquake, use of Site Class F and development of a site-specific response analysis is not required by the code since the structural period is less than 1/2 second. LIQUEFACTION HAZARDS: Portions of the site soils below the water table (about 10 to 12 feet) will liquefy during a strong earthquake. There is a sufficient layer of unsaturated, dense fill overlying the liquefiable soils that, in our opinion, the likelihood of a bearing capacity failure and large structure settlements is low. Post liquefaction settlements were not rigorously evaluated but are expected to be somewhat mitigated by the fill layer, with differential settlements not expected to present a life safety hazard. Additional evaluations can be performed to estimate the magnitude of this settlement, if desired. 99359/SEA8R108.doc Copyright 2008 Kleinfelder Page 7 of 10 November 12, 2008 4.0 CONSTRUCTION RECOMMENDATIONS Recommendations specific for the proposed addition include: • EARTHWORK: Structural fill should consist of either native soil or imported sand and gravel soil with less than 5 percent passing the U.S. No. 200 sieve. Fill soils should be compacted to 95 percent of the maximum dry density as determined by the modified proctor test (ASTM D-1557). During wet weather, it may become difficult to compact native fill soil with high silt content. Wet soil should either be dried prior to placement and compaction or excavated and replaced with imported structural fill. • FOUNDATION AND SLAB SUBGRADE PREPARATION: After removal of the pavement, we recommend that the subgrade be thoroughly compacted with any soft areas over -excavated and replaced with structural fill. Since the expansion area is located within the area of existing pavement, we do not anticipate any significant areas of soft ground. We assume that localized excavations below the slab subgrade will be made to form and place the footings. We recommend that all footing subgrades be observed and probed by a field engineer or qualified field technician to ensure that the subgrade consists of dense, stable granular soils. Soft areas should be over -excavated, replaced with structural fill, and compacted to 95 percent of the maximum dry density. • WEATHER RELATED ISSUES: The on-site soils are silty and moisture sensitive. During extended wet weather, the soils may be difficult to place and compact. In addition, properly prepared slab and footing subgrades can soften and become unsuitable particularly under the influence of construction activities. The contractor should be required to protect prepared subgrades and be responsible for their repair if they become unsuitable. • GEOTECHNICAL CONSTRUCTION MONITORING: Qualified geotechnical engineers and technicians should monitor critical aspects of the construction which includes placement and compaction of structural fill and preparation and approval of slab and footing subgrades. 99359/SEA8R108.doc Page 8 of 10 November 12, 2008 Copyright 2008 Kleinfelder 5.0 LIMITATIONS Recommendations contained in this report are based on the previous explorations and our understanding of the proposed project. The study was performed using a mutually agreed upon scope of services. It is our opinion that this study was a cost-effective method to explore the subject site and evaluate the potential geotechnical concerns. The soils data used in the preparation of this report were obtained from exploratory borings completed prior to development of the site. It is possible that variations in soil and groundwater conditions exist between the points explored or where surface grading has occurred. The nature and extent of these variations may not be evident until construction occurs. If soil or groundwater conditions are encountered at this site that are different from those described in this report, our firm should be immediately notified so that we may make any necessary revisions to our recommendations. In addition, if the scope of the proposed project, locations of facilities, or design building loads change from the descriptions given in this report, our firm should be notified. The scope of our services does not include services related to construction safety precautions and our recommendations are not intended to direct the contractor's methods, techniques, sequences or procedures, except as specifically described in our report for consideration in design. This report has been prepared for use in design for development of the subject property by Costco Wholesale and their design consultants in accordance with the generally accepted standards of practice at the time the report was written. No warranty, express or implied, is made. This report may be used only by Costco Wholesale and their design consultants and only for the purposes stated within a reasonable time from its issuance, but in no event should this time exceed 12 months from the date of the report. Land or facility use, site conditions (both on- and off-site), regulations, advances in man's understanding of applied science, and/or other factors may change over time and could materially affect our findings and may require additional work. Therefore, this report should not be relied upon after 12 months from its issue. Kleinfelder should be notified if the project is delayed by more than 12 months from the date of this report so that a review of site conditions can be made, and recommendations revised if appropriate. Any party other than Costco Wholesale or their design consultants, who wishes to use this report, shall 99359/SEA8R108.doc Page 9 of 10 November 12, 2008 Copyright 2008 Kleinfelder notify Kleinfelder of such intended use. Based on the intended use of the report, Kleinfelder may require that additional work be performed and that an updated report be issued. It is the responsibility of Costco Wholesale to see that all parties to the project including the designer, contractor, subcontractors, etc., are made aware of this report in its entirety. The use of information contained in this report for bidding purposes should be done at the contractor's option and risk. Further guidelines and information on this geotechnical report can be found in the ASFE publication entitled Important Information About Your Geotechnical Engineering Report, which is included for your reference in Appendix B of this report. 99359/SEA8R108.doc Copyright 2008 Kleinfelder Page 10 of 10 November 12, 2008 Images: Pages from 0975-039-00R.tif Images: Vicinity.tif > 1 0 5 0 w 0 U. serresto ' • • •.••. • EEEEE.. EE.'"•••••*,,SEESZE., E rj Springs! , Loraer( Radetrac 1-1 LW Li f . Parkway aueetcenig r 5 p3, ke , . , ,,,,.. '', ', -"-, ---i r-1„,,„,::::„:4,„,s'f•i-„,...._ 0., , _ .. _ 3 L), r.......:'.1 JV' -i V/ 1 fall esia. ', 14 le! a'o Raiiithe/1 "z• -J-4 : . -. .. Information ind,ad-E;Wthls grj4tite.1.:Ce1isent01on has been complied trorktvartety o srtabes-oret.lell.eetio tb-Asn9.1.,.?.0044.6.0r-7*tkid.r r".1.. . mMet..'"CrTe .e5itellintkitO1 " rb*OtUr.'"s 14 o : fO.hrrtOf..'r"eirre$...6Pdoduct ,,,,,,..,,„ ormatIon. OtWilocernent OtOr 01 il c.• us.ris a land urvey „, iesign if or Hen* as s eiestnietlendrOlytVitocumetit:The use re rnisbsest the Intornogot &iitsriled c-rt,thls Y geeeritirtifti*Ite,sotterlsk 01 01 p or mho.. - ...„::„,,,,,......... i S 180th, St 3pringibrou•K • k , 4Gre6,11beit, 101264mv.mw,r,-Tgti 11:4d 82hrist 4.0 71 r'r '14 .1, I I 0 101 tr. 4/3 1,27 •e. t • 10+ • :" irisk 1' if . I • • if • I Kererenc,e Google Mapei, 2008. co i.:-_—.S.18•41h St ,g`ij: 11 LI 11 Q ro t•1 nKLEINFELDER Bright People. Right Solutions. www.kleinfelder.com PROJECT NO. 99359 DRAWN: November 2008 DRAWN BY: J.S. Site Vicinity CHECKED BY: S.F. FILE NAME: 99359-Figures.dwg Costco Tukwila Optical Center Addition 441 Costco Drive Tukwila, Washington FIGURE 1 ATTACHED IMAGES: Images: Pages from 0975-039-00R.tif Images: Vicinity.tif ATTACHED XREFS: SEATTLE, WA CAD FILE: G:1993591 LAYOUT: Addition PLOTTED: 12 Nov 2008, 1:37pm, jstewart COSTCO DRIVE t1 fill Sahara a • •I • -r-r 9 a p. r 0 100 Scale in Feet __] d.t_,K � a • EXISTING OPTICAL FACILITY 00 = ▪ ma l� as WI FASTING LMA500001 i L. The Inlormetion Inducted on this graphic representation has been compled from e variety of sources and is .00)501 to change without nogca. KleMlelder makes no representations oearmngn. express a implied. as to emetics,. completeness, timeliness. or rights to the use of such ktformagon, This document is nal Intended for s a land 500004 product nor Is It designed or Intended as a coaseunlon design doocument. The use a misuse of the information contained on this graphic representation Is at the sola risk of the party using or Masa, the Warman. - AREA'OF REMODEL r AREA OF ADDITION A s GREEN RIVER Reference: Base file provided by Mulvany G2, dated 10/28 /08. KLE/NFELOER Bright People. Right Solutions. www.kleinfelder.com PROJECT NO. 99359 DRAWN: November 2008 DRAWN BY: J.S. Proposed Addition Plan CHECKED BY: S.F. FILE NAME: 99359-Figures.dwg Costco Tukwila Optical Center Addition 441 Costco Drive Tukwila, Washington FIGURE 2 ATTACHED IMAGES: Images: Pages from 0975-039-00R.tif Images: Vicinity.tif ATTACHED XREFS: SEATTLE, WA CAD FILE: G:199359\ LAYOUT: Previous Explorations PLOTTED: 12 Nov 2008, 1:36pm, jstewart 0 100 Scale in Feet luawosea pcailrey SAXON DRIVE Proposed Optical Faci%ly B-1 The Informadon Included on this graphic representation has been sampled horn a variety of sources and Is subject to Lange without notice. KlNnkker makes no representations or wanannes, ogress or Implied. as to 000110011, completeness, timeliness, or rights to the use of such InfornotIon. This document Is not tntended Ion ss a land survey product car Is It designed or Intended as a consimedon design document. The use or misuse of the Information contained an this graphic representation Is at the sole dsk of Iha parry ushyg or mIsusM0 the Infamollon. e-2+ 8-4 -4. Proposed Parking e-34- Properly line Reference: Taken from Figure 2 of the 1996 Geoengineers Geotechnical Report. KLEINFELDER Bright People. Right Solutions. \\�� www.kleinfeider.com PROJECT NO. 99359 DRAWN: November 2008 DRAWN BY: J.S. Previous Explorations CHECKED BY: S.F. FILE NAME: 99359-Figures.dwg Costco Tukwila Optical Center Addition 441 Costco Drive Tukwila, Washington FIGURE 3 APPENDIX A FIELD EXPLORATION LOGS GEI 85-85 Rev. 05/93 SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS GROUP SYMBOL GROUP NAME COARSE GRAINED SOILS More Than 50% Retained on No. 200 Sieve GRAVEL More Than 50% of Coarse Fraction Retained on No. 4 Sieve CLEAN GRAVEL GW WELL -GRADED GRAVEL, FINE TO COARSE GRAVEL GP POORLY -GRADED GRAVEL GRAVEL WITH FINES GM SILTY GRAVEL GC CLAYEY GRAVEL SAND More Than 50% of Coarse Fraction Passes No. 4 Sieve CLEAN SAND SW WELL -GRADED SAND, FINE TO COARSE SAND SP POORLY -GRADED SAND SAND WITH FINES SM SILTY SAND SC CLAYEY SAND FINE GRAINED SOILS SILT AND CLAY Liquid Limit Less Than 50 INORGANIC ML SILT CL CLAY ORGANIC OL ORGANIC SILT, ORGANIC CLAY More Than 50% Passes No. 200 Sieve SILT AND CLAY INORGANIC MH SILT OF HIGH PLASTICITY, ELASTIC SILT CH CLAY OF HIGH PLASTICITY, FAT CLAY Liquid Limit 50 or More ORGANIC OH ORGANIC CLAY, ORGANIC SILT HIGHLY ORGANIC SOILS PT PEAT NOTES: SOIL MOISTURE MODIFIERS: 1. Field classification is based on visual examination of soil Dry - Absence of moisture, dusty, dry to the touch in general accordance with ASTM D2488-90. Moist - Damp, but no visible water 2. Soil classification using laboratory tests is based on ASTM D2487-90. Wet - Visible free water or saturated, usually soil is obtained from below water table 3. Descriptions of soil density or consistency are based on interpretation of blow count data, visual appearance of soils, and/or test data. _Ai Geo�eEngineers SOIL CLASSIFICATION SYSTEM FIGURE A-1 GEI 86-88 Rev. 2/94 LABORATORY TESTS: AL CP CS DS GS %F HA SK SM MD SP TX UC CA Atterberg limits Compaction Consolidation Direct shear Grain -size Percent fines Hydrometer analysis Permeability Moisture content Moisture and density Swelling pressure Triaxial compression Unconfined compression Chemical analysis BLOW COUNT/SAMPLE DATA: Blows required to drive a 2.4 -inch I.D. split -barrel sampler 12 inches or other indicated distances using a 300 -pound hammer falling 30 inches. Blows required to drive a 1.5 -inch I.D. (SPT) split -barrel sampler 12 inches or other indicated distances using a 140 -pound hammer falling 30 inches. "P" indicates sampler pushed with weight of hammer or against weight of drill rig. NOTES: SOIL GRAPH: SM Soil Group Symbol (See Note 2) Distinct Contact Between Soil Strata Gradual or Approximate Location of Change Between Soil Strata 2 Water Level Bottom of Boring 22 ® Location of relatively undisturbed sample 12 ® Location of disturbed sample 17 ❑ Location of sampling attempt with no recovery 10 0 Location of sample obtained in general accordance with Standard Penetration Test (ASTM D 1586) procedures 26 CO Location of SPT sampling attempt with no recovery Location of grab sample 1. The reader must refer to the discussion in the report text, the Key to Boring Log Symbols and the exploration Togs for a proper understanding of subsurface conditions. 2. Soil classification system is summarized in Figure A-1. Geos Engineers KEY TO BORING LOG SYMBOLS FIGURE A-2 0975-038-10 0 5 10 15 w Lu z Ct. o 20 25 30 35 TEST DATA Moisture Dry Content Density Blow Group Lab Tests (%) (pct) Count Samples Symbol BORING B-1 DESCRIPTION Surface Elevation (ft.): 24.5 0 5 —10 15 20 25 30 35 40— —40 Note: See Figure A-2 for explanation of symbols Geotori.„00 Engineers LOG OF BORING FIGURE A-3 SM Brown silty fine to medium sand with occasional fine gravel and organic matter (medium dense, moist) Brown fine to medium sand with a trace of silt and occasional fine gravel (dense, moist) (fill) SP 48 " • SM Gray silty fine sand (dense, moist) (fill) 64 • . : SP -SM Brown fine to medium sand with silt (very dense, moist) (fill) ML Gray fine sandy silt with occasional organic matter and coarse 42 sand (hard, moist) (fill) " SM Gray silty fine to medium sand (medium dense, wet) 29 11 Grades to loose ML Gray silt with occasional fine sand and organic matter (very soft, wet) I] MD 63 60P ...,...,........,_ OH Gray fine sandy organic silt (very soft, moist) J. -A -A -A - 1 A 0 - 1 . ML/PT / Interbedded gray fine sandy silt and brown peat (medium stiff, moist) ML Gray silt with fine sand and organic matter (soft, wet) • ' SM Gray silty fine sand with occasional organic matter (loose, wet) ML Gray fine sandy silt with organic matter (medium stiff, wet) 6 11 ML/SM Interbedded gray silt with organic matter and gray fine silty 7 sand (medium stiff, loose, wet) 26 1 SP Black fine sand (medium dense, wet) ../ 0 5 —10 15 20 25 30 35 40— —40 Note: See Figure A-2 for explanation of symbols Geotori.„00 Engineers LOG OF BORING FIGURE A-3 :ejn 7117/96 0975-038-10 TEST DATA Moisture Dry Content Density Blow Group Lab Tests (%) . (pct) Count Samples Symbol 40 45 — 50- 33 0 52 0 59 v 59 0 46 BORING B-1 (Continued) DESCRIPTION Grades to dense SP Black fine to medium sand with occasional silt lenses approximately 1/2 inch thick (dense, wet) Boring completed at 51.5 feet on 06/21/96 Ground water encountered at approximately 10.4 feet during drilling 40 — 45 — 50 55— —55 L - u_ z f- - a p 60— —60 65 — — 65 70— — 70 75 — 80 Note: See Figure A-2 for explanation of symbols —75 — 80 Geo MO Engineers LOG OF BORING FIGURE A-3 :ejn 7/17/98 0975-038-10 TEST DATA BORING B-2 —Lab Tests 0 5- 10— 15— Moisture Dry Content Density Blow Group (%) (pcf) Count Samples Symbol DESCRIPTION Surface Elevation (ft.): 24.5 MD 9 110 MD 42 79 14 ■ 10 1 2 B • SP -SM Brown fine to medium sand with silt and occasional gravel (medium dense, moist) (fill) SP Brown fine to medium sand with occasional fine gravel and a trace of silt (medium dense, moist) (fill) ML Gray fine sandy silt with organic matter (stiff, moist) (fill) Grades to soft, wet Boring completed at 15.0 feet on 06/21/96 Ground water encountered at approximately 10.8 feet during drilling 0 —5 —10 — 15 — 20 25— —25 30 — — 30 35— — 35 40-1 —40 Note: See Figure A-2 for explanation of symbols Geo ! Engineers LOG OF BORING FIGURE A-4 0975-038-10 TEST DATA Moisture Dry Content Density Blow Group Lab Tests (%) (pct) Count Samples Symbol 0 5— MD 17 100 10- 15— H w w z 2 t— - w p 20- 17 ■ 5 ■ BORING B-3 DESCRIPTION Surface Elevation (ft.): 22.0 SP -SM Brown fine to medium sand with silt and organic matter (roots) (medium dense, moist) (fill) ML Gray sandy silt with occasional fine gravel (stiff, moist) (fill) SP Brown fine sand with a trace of silt (loose, moist) SM Dark gray silty sand (loose, moist) (fill) SM/ML Brown silty fine sand and gray fine sandy silt (very loose, very soft, wet) (fill?) Boring completed at 15.0 feet on.06/21/96 Ground water encountered at approximately 12.0 feet during drilling —0 —5 —10 —15 — 20 25— — 25 30— —30 35 — —35 40— —40 Note: See Figure A-2 for explanation of symbols GeoNtretiviA 444000 Engineers LOG OF BORING FIGURE A-5 0975-038-10 TEST DATA Moisture Dry Content Density Blow Group Lab Tests (%) (pcf) Count Samples Symbol BORING B-4 DESCRIPTION Surface Elevation (ft.): 24.0 10 — MD 28 90 1 5 — 22 19 3 SP -SM Brown fine sand with silt and fine gravel (loose, dry) (fill) SP -SM Grayish brown fine to medium sand with occasional fine gravel and silt (medium dense, moist) (till) ML Gray fine sandy silt with occasional gravel (very stiff, moist) (fill?) SP Black fine to medium sand (very loose, wet) ML Gray silt with organic matter (soft, wet) Boring completed at 15.0 feet on 06/21/96 Ground water encountered at approximately 11.5 feet during drilling 0 —5 —10 —15 —20 2 5 — —25 30— — 30 3 5 — —35 40 — Note: See Figure A-2 for explanation of symbols — 40 Geoistioim Engineers ssk.000 LOG OF BORING FIGURE A-6 APPENDIX B IMPORTANT INFORMATION ABOUT YOUR GEOTECHNICAL ENGINEERING REPORT Important Inlormatioo About Your - -Geotechnical Engineering Report Subsurface problems are a principal cause of construction delays, cost overruns, claims, and disputes. The following information is provided to help you manage your risks. Geotechnical Services Are Performed for Specific Purposes, Persons, and Projects Geotechnical engineers structure their services to meet the specific needs of their clients. A geotechnical engineering study conducted for a civil engi- neer may not fulfill the needs of a construction contractor or even another civil engineer. Because each geotechnical engineering study is unique, each geotechnical engineering report is unique, prepared solelyior the client. No one except you should rely on your geotechnical engineering report without first conferring with the geotechnical engineer who prepared it. And no one — not ever, yorr —should apply the report for any purpose or project except the ane originally contemplated. Read the Full Report Serious problems have occurred because those relying on a geotechnical engineering report did not read it all. Do nol rely on an executive summary. Do not read selected elements only. A Geotechnical Engineering Report Is Based on A Unique Set of Project -Specific Factors Geotechnical engineers consider a number of unique, project -specific fac- tors when establishing the scope of a study. Typical factors include: the client's goals, objectives, and risk management preferences; the general nature of the structure involved, its size, and configuration: the location of the structure on the site; and other planned or existing sae improvements, such as access roads, parking lots, and underground utilities. Unless the geotechnical engineer who conducted the study specifically indicates oth- erwise, do not rely on a geotechnical engineering report that was: • not prepared for you. • not prepared for your project, • not prepared for the specific site explored. or • completed before important project changes were made. Typical changes that can erode the reliability of an existing geotechnical engineering report include those that affect: • the function of the proposed structure, as when it's changed from a parking garage to an office building, or Irom a light industrial plant to a reirig¢ aced warehouse, • elevation, configuration, location, orientation, or weight of the proposed structure, • composition of the design team, or • project ownership. As a general rule, always inform your geotechnical engineer of project changes—even minor ones—and request an assessment of their impact. Geotechnical engineers cannot accept responsibilibi or liability for problems that occur because their reports do not consider developments of which they were not informed Subsurface Conditions Can Change A geotechnical engineering report is based on conditions that existed at the time the study was performed. Do not rely ona geotechnical engineer- ing reportwhose adequacy may have been affected by: the passage of time: by man-made events, such as construction on or adjacent to the site; or by natural events, such as floods, earthquakes, or groundwater fluctua- tions. Always contact the geotechnical engineer before applying the report to determine if it is still reliable. A minor amount of additional testing or analysis could prevent major problems. Most Geotechnical Findings Are Professional Opinions Site exploration identifies subsurface conditions only at those points where subsurface tests are conducted or samples are taken. Geotechnical engi- neers review field and laboratory data and then apply their professional judgment to render an opinion about subsurface conditions throughout the site. Actual subsurface conditions may differ ---sometimes significantly— from ignificantlyfrom those indicated in your report. Retaining the geotechnical engineer who developed your report to provide construction observation is the most effective method of managing the risks associated with unanticipated conditions. A Report's Recommendations Are Not Final Do not overrely on the construction recommendations included in your report. Those recommendations are not final, because geotechnical engi- neers develop them principally from judgment and opinion. Geotechnical engineers can finalise their recommendations only by observing actual subsurface conditions revealed during construction. The geotechnical engineer who developed your report cannot assume responsibility or liability for the report's recommendations if that engineer does not perform construction observation. A Geotechnical Engineering Report is Subject to Misinterpretation Other design team members' misinterpretation of geotechnical engineering reports has resulted in costly problems. Lower that risk by having your geo- technical engineer confer ,Afitfr appropriate members of the design team alter submitting the report. Aso retain your geotechnical engineer to review perti- nent elements of the design team's plans and specifications. Contractors can also misinterpret a geotechnical engineering report. Reduce that risk by having your geotechnical engineer participate in prebid and preconstruction conferences, and by providing construction observation. Do Not Redraw the Engineer's Logs Geotechnical engineers prepare final boring and testing logs based upon their interpretation of field logs and laboratory data. To prevent errors or omissions. the logs included in a geotechnical engineering report should never be redrawn for inclusion in architectural or other design drawings. Only photographic or electronic reproduction is acceptable, but recognize that separating logs from the report can elevate risk. Give Contractors a Complete Report and Guidance Some owners and design professionals mistakenly believe they can make contractors liable for unanticipated subsurface conditions by limiting what they provide for bid preparation. To help prevent costly problems, give con- tractors the complete geotechnical engineering report, but preface it with a clearly written letter of transmittal, le that letter, advise contractors that the report was not prepared for purposes of bid development and that the report's accuracy is limited; encourage them to confer with the geotechnical engineer who prepared the report (a modest fee may be required) and/or to conduct additional study to obtain the specific types of information they need or prefer. A prebid conference can also he valuable. Be sure contrac- tors have sufficient time to perform additional study. Only then might you he in a pmsition to give contractors the best information available to you, while requiring them to at least share some of the financial responsibilities stemming from unanticipated conditions. Read Responsibility Provisions Closely Some clients; design professionals, and contractors do not recognize that geotechnical engineering is far less exact than other engineering disci- plines. This lack of understanding has created unrealistic expectations That have led to disappointmenis, claims, and disputes. To help reduce the risk of such outcomes, geotechnical engineers commonly include a variety of explanatory provisions in their reports. Sometimes labeled 'limitations' many of these provisions indicate where geotechnical engineers' responsi- bilities begin and end, to help others recognize their own responsibilities and risks. Read these provisions closely Ask questions. Your geotechnical engineer should respond fully and frankly. Geoenvironmental Concerns Are Not Covered. The equipment, techniques, and personnel used to perform a geoenviron- metnialstudy differ significantly from those used to perform a geotechnical study. For that reason, a geolechnical engineering report does not usually relate any geoerrvironmental findings, conclusions, or recommendations; e.g., about the likelihood of encountering underground storage tanks or regulated contaminants. Unanticipated environmental problems have led to rruinerous project failures. lf. you have not yet obtained your own geoen- vironmental information, ask your geolechnical consultant for risk man- agement guidance. Do ,tat rely on an environmental report prepared for someone else. Obtain Professional Assistance To Deal with Mold Diverse strategies can be applied during building design, construction. operation, and maintenance to prevent significant amounts of mold from growing on indoor surfaces. To be elfeclive, all such strategies should be devised for the express purpose of mold prevention, integrated into a com- prehensive plan, and executed with diligent oversight by a professional mold prevention consultant, Because just. a small amount of water or moisture can lead to the development 01 severe mold inlesiahons, a num- ber of mold prevention strategies locus on keeping building surfaces dry! While groundwater, water infiltration, and similar issues may have been addressed as pari of the geotechnical engineering study whose findings are conveyed in this report, the geotechnical engineer in charge of this project is not a mold prevention consultant; none of the services per- formed in connection with the geotechnical engineer's study were designed or conducted for the purpose of mold preven- tion. Proper implementation of the recommendations conveyed in this report wilt not of itself be sufficient to prevent mold from growing in or on the structure involved. Rely, on Your ASFE-Member Geotechncial Engineer for Additional Assistance Membership in ASFE/The Best People on Earth exposes geotechnical engineers to a wide array of risk management techniques that can be of genuine benefit for everyone involved with a construction project. Confer with you ASFE-member geolechnical engineer for more information, ASFE The Best People on Earth 8811 Colesville Road/Suite 0106, Silver Spring. MI) 20910 Telephone: 301/565-2733 Facsimile: 3011589-2017 e-mail: inti @asfe.org wwW.asfe.oig Copyright 2004 by ASFE, inc. Duplication. reproduction, or copying of this document, in whole or in part by any means whatsoever, is strictly prohibited, except with ASf£'s specific written permission. Excerpting, quoting. or otherwise extracting wording from this document is permitted only with the express written permission of ASFE, and only for purposes of scholarly research lir book review. Only members of ASFE may use this document as a complement to or as an element of a geotechnical engineering report. Any other firm, individual, or other entity that so uses this document without being 2n ASFE member could De committing negligent or intentional (fraudulent) misrepresentation. 110106045.M •. Report Geotechnical Engineering Services Planned Optical Facility Tukwila, Washington July 18, 1996 For PriceCostco, Inc. Ge• oEngineers File No. 097-038-10-1130/071896 tj Geo b,0 Engineers t ` p .(EARS Consulting Engineers July 18, 1996 and Geoscientists Offices in Washington, Oregon, and Alaska PriceCostco, Inc. 999 Lake Drive Issaquah, Washington 98027 Attention: Mr. Jack S. Frank We are pleased to submit three copies of our report entitled "Geotechnical Engineering Services, Planned Optical Facility, Tukwila, Washington." Our services were completed in general accordance with the scope of services presented in our proposal dated June 18, 1996. We provided preliminary geotechnical recommendations including preliminary preloading requirements in a telephone conversation on June 28, 1996. We appreciate the opportunity to work with you on this project. Please contact us if you have any questions. Yours very truly, GeoEngineers, Inc. Kenneth G. Buss, P.E. Associate MSR:KGB:cms Document ID: 0975038.R cc: Ms. Angela Yusuf (three copies) Mulvanny Partnership 11820 Northup Way Bellevue, WA 98005 File No. 0975-038-10 GeoEngineers, Inc. 8410 154th Avenue N.E. Redmond, WA 98052 Telephone (206) 861-6000 Fax (206) 861-6050 .i-Printod oa recycled.pgp r. - fes;-, ;i CONTENTS Page No. INTRODUCTION 1 SCOPE 1 SITE CONDITIONS 2 SURFACE CONDITIONS 2 SUBSURFACE CONDITIONS 2 General 2 Soil Conditions 2 Ground Water Conditions 3 CONCLUSIONS AND RECOMMENDATIONS 3 GENERAL 3 SITE PREPARATION 4 STRUCTURAL FILL 5 SETTLEMENTS 5 PRELOAD FILL 6 SETTLEMENT MONITORING 6 SHALLOW FOUNDATION SUPPORT 7 FLOOR SLAB SUPPORT 8 LATERAL LOADS 8 RETAINING WALLS 8 PAVEMENT 9 DRAINAGE CONSIDERATIONS 9 SEISMICITY 10 General 10 Liquefaction Potential 10 LIMITATIONS 11 FIGURES Figure No. Vicinity Map 1 Site Plan 2 Settlement Plate Detail 3 APPENDICES Page No. Appendix A - Field Explorations and Laboratory Testing A-1 Field Explorations A-1 Laboratory Testing A-1 APPENDIX A FIGURES Figure No. Soil Classification System A-1 Key to Boring Log Symbols A-2 Logs of Borings A-3 ... A-6 Geo Eng i n e e r s 1 File No. 0975-038-10-1130/071896 REPORT GEOTECHNICAL ENGINEERING SERVICES PLANNED OPTICAL FACILITY TUKWILA, WASHINGTON FOR PRICECOSTCO, INC. INTRODUCTION This report presents the results of our geotechnical engineering services for the planned PriceCostco Warehouse Facility to be constructed in Tukwila, Washington. The site is located approximately 283 feet east of Andover Park East and south of Saxon Drive. An existing Costco Wholesale Warehouse is located north of Saxon Drive. Home Depot which occupies the site to the south, currently owns the property. The location of the site and the general configuration of the proposed project are shown on the Vicinity Map, Figure 1, and the Site Plan, Figure 2. The ground surface elevation over the majority of the site ranges from approximate Elevation 21 feet to Elevation 24.5 feet. We understand that the proposed facility will include a one-story building approximately 160 feet wide by 220 feet long. The design loading for the slab -on -grade floors will be approximately 350 pounds per square foot (psf). Interior column Ioads are estimated to be 100 kips. The proposed finished floor elevation for the slab -on -grade is Elevation 25 feet. SCOPE The purpose of our geotechnical engineering services is to evaluate subsurface soil and ground water conditions as a basis for developing design criteria for the geotechnical aspects of the proposed development. Our specific scope of services will include the following tasks: 1. Review available information and geotechnical engineering studies in our files. 2. Explore the site by drilling one boring in the area of the building to a depth of 51.5 feet below the ground surface and three borings to a depth of 15 feet below the ground surface in the parking area. 3. Complete a laboratory testing program to evaluate the engineering properties of the underlying soils. The laboratory testing included moisture and density determinations. 4. Develop recommendations for site preparation and earthwork required to establish design site grades, including consideration of excavation requirements and remedial work on any existing fills which are insufficiently compacted, evaluation of the suitability of on-site materials for use in new fills, recommendations for any imported borrow needed, and fill placement and compaction criteria. 5. Develop recommendations for allowable soil bearing pressures and settlement estimates for shallow foundations. G e o E n g i n e e r s 1 File No. 0975-038-10-1130/071896 6. Evaluate requirements for support of ground level floor slabs either on -grade or structurally, and recommend a preload or surcharge program, if appropriate, based on our evaluation of potential long-term settlements following completion of building construction. 7. Provide seismic design criteria based on the Uniform Building Code, including expected accelerations during earthquakes based on the standard of practice used in the Puget Sound area. This will include evaluating the liquefaction potential of the underlying soils. 8. Provide recommendations for pavement design sections in roadway and parking areas. 9. Provide recommendations for lateral earth pressures including active pressures for retaining and dock -high walls and passive earth pressures on footings. This includes the coefficient of base friction against sliding. IQ. Provide recommendations for surface and subsurface drainage. 11. Prepare a written report presenting our conclusions and recommendations together with supporting field and laboratory data. SITE CONDITIONS SURFACE CONDITIONS The site is nearly rectangular with a average north -south dimension of approximately 240 feet and an east -west dimension of about 690 feet. The existing site is generally flat and covered with grass. A row of trees is present along Saxon Drive. In addition a birch tree is located on the northwestern portion of the site. A railroad easement is located along the north side of the site. Saxon Drive and an existing Home Depot store form the west and east boundaries, respectively. Seventieth Avenue South forms the south boundary. The Green River is located south of 70th Avenue. SUBSURFACE CONDITIONS General We evaluated subsurface soil and ground water conditions at the site by drilling four borings. A 51.5 -foot -deep boring was completed within the proposed building footprint. Three 15 -foot -deep borings were completed in the parking area. We also reviewed the report prepared by GeoEngineers for the Home Depot store entitled, "Report, Geotechnical Engineering Services, Proposed Home Depot Store, Tukwila, Washington," dated December 2, 1992. The approximate locations of our explorations are shown on Figure 2. Descriptions of the field explorations, laboratory testing procedures and the exploration logs are presented in the appendix. Soil Conditions Soil conditions encountered in borings B-1 through B-4 are relatively consistent. Subsurface soils generally consist of fill and alluvium. We did not observe a well-developed sod zone at the ground surface. G e o Eng i n e e r s 2 File No. 0975-038-10-1130/071896 Fill consisting of medium dense or denser sand with varying amounts of silt and gravel and medium stiff to hard silt with varying amounts of sand and gravel was encountered to depths ranging from 10 to 15 feet in the explorations. Alluvium was encountered in borings B-1 and B-4 beneath the fill. The alluvium in boring B-1 extended to a depth of 51.5 feet below the ground surface (the depth explored). The alluvium consisted of 4.5 feet of loose to medium dense silty sand underlain by 12.5 feet of very soft to medium stiff silt and organic silt with varying amounts of sand and organic matter. The silt was underlain by 11 feet of interlayered loose silty sand and medium stiff sandy silt with organic matter. The layers were up to approximately 4 feet thick. Beneath the layers of sand and silt the boring encountered medium dense to dense sand. The sand contained occasional lenses of silt up to 1/2 -inch -thick. Ground Water Conditions Ground water was observed in the borings during drilling at depths ranging from 10.4 to 12 feet below the ground surface. Ground water conditions at the site should be expected to fluctuate as a function of season, precipitation and surface water levels in the Green River. Perched ground water may develop near the ground surface during periods of extended precipitation. CONCLUSIONS AND RECOMMENDATIONS GENERAL We conclude that the site is suitable for construction of the proposed building and parking areas provided a preload program is completed within the building area to reduce post construction settlements to within tolerable limits. Assuming site filling and preloading as recommended herein, the proposed building may be supported on shallow spread footings founded on structural fill. Based on information provided by you, we understand that finished site grades will be up to 1 to 2 feet above existing site grades. Placement of fill in excess of about 1 foot above the existing site grades and the imposition of building loads will result in settlements due to immediate compression and consolidation of underlying compressible soils. The building fill pad and preload should be constructed far enough in advance of erdction of the building walls so that the majority of settlement due to these loads will have occurred before structural connections are made. We estimate that it will be necessary to leave the preload fill at full height a minimum of 10 to 12 weeks. If the building pad area is surcharged, we estimate that it will be necessary to leave preload/surcharge in place at full height at least five to six weeks. If settlement monitoring data indicates that settlement is occurring at a rate greater than or less than that estimated, the duration of preload/surcharge period may be reduced or extended accordingly. G e o Eng i n e e r s 3 File No. 0975-038-10-1130/071896 Existing near -surface fill soils present across the site are quite variable. We expect that site access by rubber -tired vehicles will be difficult during wet weather where silty soils are present. Temporary roads may be required on some areas of the site during wet weather where the fines content of the near -surface soils exceeds about 5 to 10 percent. If a portion of site grading activities are completed during wet weather, we recommend that all structural fill consist of an imported free -draining granular material. During dry weather, a portion of the import fill may contain an increased percentage fines (that portion passing the U.S. No. 200 sieve) provided the fill can be placed and compacted to the recommended minimum standard. Our specific geotechnical recommendations are presented in the following sections of this report: • Site Preparation • Structural Fill • Settlements • Preload Fill • Settlement Monitoring • Shallow Foundation Support • Floor Slab Support • Lateral Loads • Retaining Walls • Pavement • Drainage Considerations • Seismicity SITE PREPARATION We recommend that all trees and grasses be removed from building and pavement areas prior to any grading. We recommend that the site be thoroughly proofrolled with heavily loaded rubber -tired construction equipment prior to fill placement. Proofrolling should only be completed during periods of dry weather. If soft or otherwise unsuitable areas revealed during proofrolling cannot be compacted to a stable and uniformly dense condition, the soft soils should be removed and replaced with structural fill to the depth determined by the geotechnical engineer. If site preparation is completed during wet weather, the subgrade should be evaluated by probing with a steel hand probe to identify areas of soft soils which may need to be replaced. Some of the existing near -surface site soils are sensitive to disturbance from construction when water is present. Temporary roads may be required for access to construction areas on some portions of the site during extended wet weather. Our experience suggests that a thickness of 12 to 24 inches of sand and gravel.with less than 5 percent fines, crushed rock or quarry spalls will be necessary to provide support for construction equipment. We anticipate that it will be beneficial to place geotextile fabric on the subgrade in soft areas to provide a separation layer between the silty subgrade soils and temporary road base materials. Ge o E ng i n e e r s 4 File No. 0975-038-10-1130/071896 STRUCTURAL FILL All fill in pavement and building areas should be placed as compacted structural fill. Structural fill should be free of debris, organic contaminants, and cobbles larger than 6 inches. We anticipate that the fill material placed to achieve final site grades will likely consist of imported material used for the building area preload. The suitability of soil for use as structural fill will depend on its gradation and moisture content. As the amount of fines (soil particles passing the U.S. No. 200 sieve) increases, soil becomes increasingly more sensitive to small changes in moisture content and adequate compaction becomes more difficult, if not impossible, to achieve. We recommend that structural fill for wet weather conditions consist of sand and gravel with less than 5 percent fines. During periods of extended dry weather, the fines content may be increased somewhat, provided that the moisture content can be controlled to achieve adequate compaction. The existing near -surface fill soils consist primarily of sand with varying amounts of silt and gravel. As the fines content of the fill soils increase they will be difficult to impossible to compact properly when the moisture content is more than a few percent above the optimum moisture content. We recommend that all fill placed within the building areas and within 2 feet of the pavement subgrade be compacted to at least 95 percent of the maximum dry density as determined in accordance with ASTM D-1557. The structural fill with this density criterion for the building areas should extend laterally beyond the perimeter of the building a distance at least equal to the height of the fill. We recommend that all structural fill placed more than 2 feet below the pavement subgrade elevation be compacted to at least 90 percent of the same standard. The floor slabs and pavement should be underlain by capillary break and subbase materials, respectively, as described later in this report. We recommend that structural fill be placed in horizontal layers of appropriate thickness to achieve the required compaction. Each lift should be uniformly compacted as recommended before placing additional lifts of fill. We recommend that the appropriate lift thickness, and the adequacy of subgrade preparation and structural fill compaction be evaluated by a field representative from our firm during construction. A sufficient number of in-place density tests should be performed as the fill is being placed to determine if the required compaction is being achieved. SETTLEMENTS Placement of fill above the existing grades and imposition of building loads will cause consolidation in the underlying soils. We estimate that between 3 to 6 inches of settlement will occur as a result of the planned areal floor loads of 350 psf and footing pressures of 2,000 psf. Geo Eng i n e e r s 5 File No. 0975-038-10-1130/071896 The settlements are likely to vary across the site because of variations in the thickness and compressibility of the softer underlying soils. We therefore recommend that a preload fill be placed to induce settlement before the building loads are applied. PRELOAD FILL The amount of settlement estimated to occur under the design floor loads is greater than that which is typically tolerable by this type of building. Therefore, we recommend that a preload program be completed to simulate the majority of the expected floor loads and reduce postconstruction settlements. The purpose of the preload fill is to preinduce a major portion of the settlements which would otherwise occur when building and floor loads are applied. The preload program will also significantly reduce potential differential settlements due to variability in areal loading and thickness of compressible soils. The required thickness of the preload fill will depend n the expected floor loads. We recommend a preload thickness ofj2 feet for floor loads of.5t1 psf and footing pressures of 2,000 psf. The preload thickness is in addition to any fill placed to achieve site grades or form the building pad. We suggest that preload fill consist of sand and gravel, as described above for structural fill, so that it can be used in grading other portions of the site. Use of sand and gravel will also minimize difficulties associated with rehandling and compaction of the fill if it must be removed during inclement weather. The crest of the preload fill should extend to full height for a distance of at Ieast 5 feet beyond the perimeter of the proposed building areas. Preload fill need be compacted only to the extent necessary to support construction equipment. The preload surface should be crowned slightly to promote drainage of surface water. Following the preloading period, the excess fill can be removed from the building areas and used as structural fill in parking or other building areas. We recommend that the upper 12 inches of the building pad fill be recompacted to the minimum standard described above after the preload has been removed and before the floor slab is constructed. SETTLEMENT MONITORING In order to evaluate the magnitude and time rate of settlement of the building pad and preload fill, we recommend that settlement monitoring plates be installed prior to placing any fill in the bui ing eas. We estimate that the preload fill will need to be left at full height a minimum of 1.€T to weeks. If settlement monitoring data indicates that settlement is occurring at a rate greater or less than that estimated, the duration of preloading will be reduced or extended accordingly. An example of a suitable settlement plate and a description of monitoring procedures are presented in Figure 3. We recommend that settlement plates be placed approximately 25 feet in from each corner of the building, and that one additional settlement plate be located at the approximate center of the building footprint. Initial elevation readings of the settlement plates Geo Engineers 6 File No. 0975-038-I0-1130/071896 must be obtained when they are installed and before any fill is placed. If this is not done, the initial settlement behavior of the fill pad will not be recorded and the value of the observations diminished in that the total magnitudes of settlement will be unknown. This will likely result in a longer preload period than would otherwise be necessary. The elevations of the plates and the adjacent ground surface should be measured two to three times each week during and after completion of filling so that settlement progress in relation to the amount of fill in place can be defined. We recommend that the readings be taken by the project civil engineer and the results forwarded to our office promptly after each reading for evaluation. The presence of the measurement rods which extend from the settlement plates through the fill will inhibit the mobility of earthmoving equipment to some extent. The contractor will have to exercise care to avoid damaging the rods. The construction documents should emphasize the importance of protecting the settlement plates and measuring rods from disturbance. The preload fill height may be increased to 10 feet, particularly if additional fill is necessary aGQ to achieve final grades and/or if the preload time period needs to be reduced as a result of the iclef* tight project time schedule. We estimate that the time that the preload fill needs to be left at full llAV height can be reduced to about five to six weeks if the preload fill height is increased to 10 feet. SHALLOW FOUNDATION SUPPORT We recommend that the building be supported on shallow foundations provided that the footings are placed on a pad of compacted structural fill. Foundation construction should not be started until settlements from filling/preloading operations are complete. We recommend that all footings be supported on structural fill extending to a depth of 2 feet below the bottom of footing grade. We recommend that the structural fill extend a minimum of 2 feet beyond the edge of the footing. We recommend that a representative from our firm evaluate the footing excavations before placement of structural fill. Any soils the are excessively soft may require additional overexcavation and replacement with structural fill. Exterior footings should have a minimum embedment of 18 inches below the lowest adjacent grade. Interior footings should extend at least 12 inches below the top of the floor slab. We recommend an 18 -inch and 24 -inch minimum width for continuous and isolated footings, respectively. Footings may be designed using an allowable soil bearing pressure of 2,000 pounds per square foot (psf) for dead plus long-term live loads. This value may be increased by one- third when considering transient loads such as wind or seismic forces. The weight of the footing and any backfill over the footing may be neglected when estimating bearing pressures. We estimate that the settlement of continuous strip and column footings supported as described above will be on the order of 1/2 to 1 inch for the assumed loading conditions provided that the site is preloaded as outlined in the previous sections. Differential settlements should be on the order of 1/2 inch or less in 50 feet along continuous footings or between similarly loaded adjacent columns. The majority of these settlements should occur within four to six weeks after applying load to footings. Geo E n g i nee r s 7 File No. 0975-038-10-1130/071896 FLOOR SLAB SUPPORT The floor slab for the proposed facility should be underlain by a 12 -inch thickness of capillary break material placed over compacted structural fill prepared as recommended above. We recommend that the capillary break consist of crushed rock or clean, well -graded sand and gravel compacted to at least 95 percent of the maximum dry density based on ASTM D-1557. The capillary break material should have a maximum particle size on the order of 3/4 inch and have less than 5 percent fines (material passing the U.S. Standard No. 200 sieve). We recommend that a vapor retarder such as plastic sheeting be used to provide an added protection against upward migration of moisture into the slab. The vapor retarder is especially important if the first floor office areas are to have carpet or vinyl flooring. If a minimum of 12 inches of structural fill consisting of clean sand and gravel with Iess than 5 percent fines (material passing the U.S. Standard No. 200 sieve) is present as a result of fill placement for the building pad, the aforementioned capillary break layer is not necessary. LATERAL LOADS Lateral loads can be resisted by passive resistance on the sides of the footings and by friction on the base of the footings and slabs. Passive pressures may be computed using an equivalent fluid density of 300 pcf (pounds per cubic foot) if all soil extending out from the face of the foundation element for a distance at least equal to two and one-half times the depth of the element consists of structural fill compacted to at least 95 percent of the maximum dry density (ASTM D-1557). The top of the triangular passive pressure distribution should begin at the bottom of adjacent floor slabs or paving or below a depth of 1 foot where the adjacent area is unpaved, as appropriate. Frictional resistance can be evaluated using 0.35 for the coefficient of base friction against footings and floor slabs. The above values incorporate a factor of safety of about 1.5. RETAINING WALLS We recommend that walls for loading docks or other building walls which will serve as retaining walls be designed for lateral pressures based on an equivalent fluid density of 35 pcf, provided that the walls are free to yield during backfilling. The above lateral soil pressure does not include the effects of surcharges such as floor loads, traffic loads or other surface loading. Surcharge effects should be considered where appropriate. In settlement sensitive areas such as beneath on -grade slabs and the upper 2 feet of wall backfill beneath paved areas should be compacted to 95 percent of the maximum dry density determined in accordance with ASTM D-1557. At other locations and below a depth of 2 feet in paved areas, wall backfill should be compacted to between 90 and 92 percent of the maximum dry density. Care must be exercised by the contractor to avoid overcompaction and consequent damage to the walls. Ge o En g i n e e r s 8 File No. 0975-038-10-1130/071896 The recommended equivalent fluid density assumes a free -draining condition behind the wall. This may be achieved by placing an 18- to 24 -inch -wide zone of sand an gravel containing less than 5 percent fines against the wall. A perforated drainpipe should be embedded in the free - draining sand and gravel zone along the base of retaining walls to remove any water which collects in this zone. The drainpipe should be tightlined to an appropriate discharge point. PAVEMENT Pavement subgrade areas should be evaluated and prepared as recommended previously in this report. The pavement recommendations provided below have been prepared for pavement sections bearing on existing fill compacted to 95 percent of the MDD (maximum dry density) in accordance with ASTM D-1557 or a minimum thickness of 12 inches of structural fill compacted to 95 percent. If the subgrade soils are soft, it may be necessary to overexcavate the soft soils to a depth of at least 12 inches and place structural fill consisting of clean sand and gravel. A non -woven geotextile fabric, such as a Amoco 4545, Polyfelt TS500 or equivalent, may be necessary beneath the 12 -inch -thick structural fill subbase where soft subgrade soils are present. To prevent unnecessary disturbance of the existing subgrade soils from construction traffic, we recommend that construction traffic be kept off moisture sensitive soils to the extent practical when the soils are wet. We recommend a minimum pavement section over the compacted subgrade or subbase consisting of at least 2 inches of Class A or B asphalt concrete (AC) over a 4 -inch thickness of densely compacted crushed rock base course in light traffic areas and at least 3 inches of AC over 6 inches of crushed rock base course in driveways and heavy traffic areas. Materials and placement of the AC should be in general accordance with Sections 5-04, 9-02 and 9-03.8 of the 1994 Washington State Department of Transportation Specifications for Road, Bridge and Municipal Construction. The crushed rock should be in general accordance with the specifications for crushed surfacing top course (CSTC) in Section 9-03.9(3) of the WSDOT Specifications. DRAINAGE CONSIDERATIONS We recommend that pavement surfaces be sloped away from building areas to route drainage away from foundations and floor slabs and toward the storm drain system. We recommend that all roof drains be connected to tightlines for diversion into the appropriate storm drain system. We also recommend that perimeter foundation drains be installed around the planned building and at the base of loading dock walls because of the possibility of perched ground water conditions to develop in the fill. Drainage of water from the pavement base course and subbase can decrease the likelihood of pavement distress. Grading the subgrade surface to drain toward catch basins and drainage outlets will discourage the trapping and accumulation of water in the base course on top of the subgrade. Small holes can be provided in the portion of the catch basins that is adjacent to the G e o E n g i n e e r s 9 File No. 0975-038-10-1130/071896 subbase or base layer, provided that the expected water level within the catch basin will always be below the elevation of the holes. The holes should be covered with a suitable geotextile fabric placed against the outside of the catch basin to prevent piping of the subbase material into the catch basin. SEISMICITY General The Puget Sound region is seismically active and lies within Seismic Risk Zone 3 with a Seismic Zone Factor (Z) of 0.30 as classified by the Uniform Building Code (ICBO 1994). We recommend the project site be classified as Soil Profile Type S3, as defined in the Uniform Building Code. This profile type consists of "a soil profile 70 feet or more in depth and containing more than 20 feet of soft to medium stiff clay but not more than 40 feet of soft clay." Seismicity in this region is attributed primarily to the interaction between the Pacific, Juan de Fuca and North American plates. The Juan de Fuca plate is subducting beneath the North American Plate.. Each year 1,000 to 2,000 earthquakes occur in Oregon and Washington. However, only 5 to 20 of these are typically felt because the majority of recorded earthquakes are smaller than magnitude 3. Because of the thick overburden of glacial sediments, no active surface faults have been discovered. Also the distribution of the recorded seismic epicenters is scattered and does not define a mappable fault zone. In recent years two large earthquakes occurred which resulted in some liquefaction in loose alluvial deposits and significant damage to some structures. The first earthquake, which was centered in the Olympia area, occurred in 1949 with a Richter magnitude of 7.1. The second earthquake, which occurred in 1965, was centered between Seattle and Tacoma. It had a Richter magnitude of 6.5. Liquefaction Potential Liquefaction refers to a condition where vibration or shaking of the ground, usually from earthquake forces, results in development of excess pore pressures in saturated soils and subsequent loss of strength in the deposit of soil so affected. In general, soils which are susceptible to liquefaction include loose to medium dense clean to silty sands which are below the water table. The evaluation of liquefaction potential is complex and is dependent on numerous site parameters, including soil grain size, soil density, site geometry, static stresses, and the design ground acceleration. Typically, the liquefaction potential of a site is evaluated by comparing the cyclic shear stress ratio (the ratio of the cyclic shear stressto the initial effective overburden stress) induced by an earthquake to the cyclic shear stress ratio required to cause liquefaction. We have evaluated the earthquake -induced cyclic shear stress ratio at this site using an empirical relationship developed by researchers for this purpose. A design earthquake with a magnitude Ge o Eng i neer s 10 File No. 0975-038-10-1130/071896 of 7.5 on the Richter scale and a peak horizontal ground acceleration of 0.3g (acceleration due to gravity) was used for our analysis. This earthquake magnitude is estimated to have a return period of about 500 years (approximately equal to a 10 percent probability of exceedance in 50 years). The cyclic shear stress ratio required to cause liquefaction was estimated using an empirical procedure based on blow counts from an SPT (standard penetration test) obtained from the borings. This method relates the cyclic shear stress ratio required to cause liquefaction to the SPT value and the fines content of the soil. The results of our analyses indicate that portions of the loose to medium dense sandy soils underlying the site have a high to moderate potential for liquefaction, respectively, during the design seismic event assumed. We have estimated settlement due to liquefaction of loose to medium dense sandy soils for the design seismic event described above using an empirical method developed for this purpose. Our estimates indicate that total liquefaction -induced settlements may be on the order of 1 to 3 inches at this site. We anticipate that differential settlement across the site will be about one-half of the total amount of settlement. The preloading the building pad area will mitigate some of the possible liquefaction -induced settlements. We anticipate that total liquefaction settlements following preloading will be about 1 to 2 inches and differential settlements will be on the order of 1/2 to 1 inches. While this level of ground settlement is above the normal design criteria for buildings in this area and may cause some damage to the floor slab and/or footings and supported structure, it is not expected to cause collapse of the structure. Several measures are available to further reduce differential settlement below footings and floor slabs caused by Iiquefaction at depth. One alternative is to support the footings and floor slab on several feet of clean crushed rock placed over a strong geotextile. The crushed rock pad and geotextile provides a more rigid base for the foundations and thus reduces the effects of differential settlement. It also allows pore water pressures from the lower soil units to dissipate thus reducing the potential for loss of strength of near -surface soils. Placement of a crushed rock pad as recommended should reduce the effects of liquefaction settlement on the building. However, differential ground settlement wiII likely still occur during a design level earthquake and some damage to the floor slabs and/or structure could occur. If PriceCostco prefers to design and construct a structure that will not sustain damage due to liquefaction -induced settlement, we recommend that the floor slabs be structurally supported and the building be supported on piles. We suggest that life cycle costs of different foundation support alternatives be evaluated when selecting appropriate foundation systems for the proposed building. LIMITATIONS We have prepared this report for use by PriceCostco, Inc. and other members of the design team in design of a portion of this project. The data and report should be provided to prospective G e o Eng i n e e r s 11 File No. 0975-038-10-I130/071896 contractors for their bidding or estimating purposes, but our report, conclusions and interpretations should not be construed as a warranty of subsurface conditions. If there are changes in the grades, locations, configuration or type of construction for the buildings, the conclusions and recommendations presented may not be applicable. If design changes are made, we request that we be given the opportunity to review our conclusions and recommendations and to provide a written modification or verification. When the design has been finalized, we should be retained to review the appropriate portions of the drawings and specifications to see that our recommendations have been interpreted and implemented as intended. The scope of our services does not include services related to construction safety precautions and our recommendations are not intended to direct the contractor's methods, techniques, sequences or procedures, except as specifically described in our report for consideration in design. There are probable variations in subsurface conditions between the explorations. Such variations may also occur with time. A contingency for unanticipated conditions should be included in the budget and schedule. Sufficient monitoring, testing and consultation by our firm should be provided during construction to confirm that the conditions encountered are consistent with those indicated by the explorations, to provide recommendations for design changes if the conditions revealed during construction differ from those anticipated, and to evaluate whether earthwork and foundation installation activities comply with contract plans and specifications. Within the limitations of scope, schedule and budget, our services have been executed in accordance with generally accepted practices in this area at the time the report was prepared. No other conditions, express or implied, should be understood. O o - We appreciate this opportunity to be of continued service to PriceCostco, Inc. Please call if you have any questions regarding this report. IEXPIRES 7r 1Y %r y(i, 1 t 1- MSR:KGB:cms Document ID: 0975038.R Respectfully submitted, GeoEngineers, Inc. Mary S. Rutherford, P.E. Associate Kenneth G. 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Lfj v N ISA v - - - - S 19& H ST _ <c �' $shoo <I 1 S 196711 ST S 196TH ST 1 h $ 1 7600 -V • m1 ' �� 0 c� i 2000 V 11 198TH ST 4000 Sa]198TH ST S 198TH ST -r- t-- SCALE IN FEET ri Reproduced with permission granted by THOMAS BROS. MAPS. This map is copyrighted by THOMAS BROS. MAPS. It is unlawful to copy or reproduce all or any part thereof, whether for personal use or resale, without permission. Geo ate Engineers VICINITY MAP FIGURE 1 J fl SAXON DRNE m 70-n4pVFJt'� Proposed Parking Proposed Optical Facility Y Railroad Easement c J Z -e 8 0 W Z W J 0 QZ a FIGURE 2 96/61./L0 01 -8E0 -9L60 dti9/8SW Measurement Rod, 1/2 -inch - diameter Pipe or Rebar Existing Ground Surface \ • i. , \'•\ ,///\\\\v Sand Pad, if Necessary Casing, 2 -inch -diameter Pipe (set on plate, not fastened) Coupling Welded to Plate i /lir\i,, ,, ,\\ in,r \\\\ // /777- v//i// V\,, 11/1/// VA\ \\1/// (Not to Scale) Settlement Plate, 16" x 16" x 1/4" NOTES: 1. Install settlement plates on firm ground or on sand pads if needed for stability. Take initial reading on top of rod and at adjacent ground level prior to placement of any fill. 2. For ease in handling, rod and casing are usually installed in 5 -foot sections. As fill progresses, couplings are used to install additional lengths. Continuity is maintained by reading the top of the measurement rod, then immediately adding the new section and reading the top of the added rod. Both readings are recorded. 3. Record the elevation of the top of the measurement rod at the recommended time intervals. Record the elevation of the adjacent fill surface every time a measurement is taken. 4. Record the elevation of the top of the measurement rod to the nearest 0.01 foot, or 0.005 foot if possible. Record the fill elevation to the nearest 0.1 foot. 5. The elevations should be referenced to a temporary benchmark located on stable ground at least 100 feet from the area being filled. GeoAla 40 Engineers SETTLEMENT PLATE DETAIL FIGURE 3 APPENDIX A 5 10 15 t— W w LL w p 20 25 30 35 40 TEST DATA Moisture Dry Content Density Blow Group Lab Tests (%) (pcf) Count Samples Symbol BORING B-1 DESCRIPTION Surface Elevation (ft.): 24.5 - SM Brown silty fine to medium sand with occasional fine gravel and organic matter (medium dense, moist) Brown fine to medium sand with a trace of silt and occasional fine gravel (dense, moist) (fill) SP 48 Il f " SM Gray silty fine sand (dense, moist) (fill) 64 I1.•. SP -SM Brown fine to medium sand with silt (very dense, moist) (fill) ML Gray fine sandy silt with occasional organic matter and coarse - 42 o f • " SM sand (hard, moist) (fill) Gray silty fine to medium sand (medium dense, wet) 29 0 7 3 Grades to loose ML Gray silt with occasional fine sand and organic matter (very soft, wet) . _ 2 01 MD 63 60 P ti. A. OH Gray fine sandy organic silt (very soft, moist) P = ti 8 ML/PT r Interbedded gray fine sandy silt and brown peat (medium stiff, _ moist) ML Gray silt with fine sand and organic matter (soft, wet) / SM Gray silty fine sand with occasional organic matter (loose, wet) - 8 ML Gray fine sandy silt with organic matter (medium stiff, wet) _ 6 Q 7 (1 ML/SM Interbedded gray silt with organic matter and gray fine silty sand (medium stiff, loose, wet) ` 5 El 26 11 SP Black fine sand (medium dense, wet) Note: See Figure A-2 for explanation of symbols Geo 40iiiod"'Engineers LOG OF BORING FIGURE A-3 GEI 85-85 Rev. 05/93 SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS GROUP SYMBOL GROUP NAME COARSE GRAINED SOILS More Than 50% Retained on No. 200 Sieve GRAVEL More Than 50% of Coarse Fraction Retained on No. 4 Sieve CLEAN GRAVEL GW WELL -GRADED GRAVEL, FINE TO COARSE GRAVEL GP POORLY -GRADED GRAVEL GRAVEL WITH FINES GM SILTY GRAVEL GC CLAYEY GRAVEL SAND More Than 50% of Coarse Fraction Passes No. 4 Sieve CLEAN SAND SW WELL -GRADED SAND, FINE TO COARSE SAND SP POORLY -GRADED SAND SAND WITH FINES SM SILTY SAND SC CLAYEY SAND FINE GRAINED SOILS More Than 50% Passes No. 200 Sieve SILT AND CLAY Liquid Limit Less Than 50 INORGANIC ML SILT CL CLAY ORGANIC OL ORGANIC SILT, ORGANIC CLAY SILT AND CLAY INORGANIC MH SILT OF HIGH PLASTICITY, ELASTIC SILT CH CLAY OF HIGH PLASTICITY, FAT CLAY Liquid Limit 50 or More ORGANIC OH ORGANIC CLAY, ORGANIC SILT HIGHLY ORGANIC SOILS PT PEAT NOTES: SOIL MOISTURE MODIFIERS: 1. Field classification is based on visual examination of soil Dry - Absence of moisture, dusty, dry to the touch• in general accordance with ASTM D2488-90. Moist - Damp, but no visible water 2. Soil classification using laboratory tests is based on ASTM D2487-90. Wet - Visible free water or saturated, usually soil is obtained from below water table• 3. Descriptions of soil density or consistency are based on interpretation of blow count data, visual appearance of soils, and/or test data. Geo 40 Engineers SOIL CLASSIFICATION SYSTEM FIGURE A-1 APPENDIX A FIELD EXPLORATIONS AND LABORATORY TESTING FIELD EXPLORATIONS The subsurface conditions at the planned PriceCostco warehouse facility were explored by drilling four test borings to depths of 15 feet and 51.5 feet. Three 15 -foot -deep borings were drilled in the proposed parking area. The 51.5 -foot -deep boring was drilled within the proposed building footprint. The test borings were drilled on June 21, 1996 using truck -mounted, hollow - stem auger drilling equipment (B-59 Mobile Drill rig) by Holt Testing, Inc. of Puyallup, Washington. The approximate locations of the explorations are shown on the Site Plan, Figure 2. Our exploration locations were measured by taping from existing site features. Relatively undisturbed samples were obtained from the borings using a 1.5 -inch inside - diameter split -barrel sampler driven into the soil with a 140 -pound hammer free -falling 30 inches. The number of blows required to drive the sampler the last 12 inches, or other indicated distance, is recorded on the boring logs. Additionally, two Shelby tube samples were obtained in the test borings in general accordance with ASTM D1587. The Shelby tube samples were obtained by smoothly advancing a 3 -inch -diameter seamless steel tube into the soil. The borings and test pit explorations were continuously monitored by a geotechnical engineer from our firm who examined and classified the soils encountered, obtained representative soil samples, and observed ground water conditions. Soils were classified in general accordance with the classification system described in Figure A-1. A key to the boring log symbols is presented in Figure A-2. The logs of the borings are presented in Figures A-3 through A-6. The logs are based on our interpretation of the field and laboratory data and indicate the various types of soils encountered. They also indicate the depths at which these soils or their characteristics change, although the change might actually be gradual. If the change occurred between samples in the borings, the depth of the change was interpreted. LABORATORY TESTING All soil samples were brought to our laboratory for further examination. Selected samples were tested to determine their moisture content and dry density. The results of the moisture content and dry density tests performed on samples obtained from the test borings are presented on the boring logs. G e o Eng in e e r s A - 1 File No. 0975-038-10-1130/071896 GEI 85-85 Rev. 05/93 SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS GROUP SYMBOL GROUP NAME COARSE GRAINED SOILS More Than 50% Retained on No. 200 Sieve GRAVEL More Than 50% of Coarse Fraction Retained on No. 4 Sieve CLEAN GRAVEL GW WELL -GRADED GRAVEL, FINE TO COARSE GRAVEL GP POORLY -GRADED GRAVEL GRAVEL WITH FINES GM . SILTY GRAVEL GC CLAYEY GRAVEL SAND More Than 50% of Coarse Fraction Passes No. 4 Sieve CLEAN SAND SW WELL -GRADED SAND, FINE TO COARSE SAND SP POORLY -GRADED SAND - SAND WITH FINES SM SILTY SAND SC CLAYEY SAND FINE GRAINED SOILS SILT AND CLAY Liquid Limit Less Than 50 INORGANIC ML SILT CL CLAY ORGANIC OL ORGANIC SILT, ORGANIC CLAY More Than 50% Passes No. 200 Sieve SILT AND CLAY Liquid Limit INORGANIC MH 1 SILT OF HIGH PLASTICITY, ELASTIC SILT CH CLAY OF HIGH PLASTICITY, FAT CLAY 50 or More ORGANIC OH ORGANIC CLAY, ORGANIC SILT HIGHLY ORGANIC SOILS PT PEAT NOTES: SOIL MOISTURE MODIFIERS: 1. Field classification is based on visual examination of soil Dry - Absence of moisture, dusty, dry to the touch in general accordance with ASTM D2488-90. Moist - Damp, but no visible water 2. Soil classification using laboratory tests is based on ASTM D2487-90. Wet - Visible free water or saturated, usually soil is obtained from below water table 3. Descriptions of soil density or consistency are based on interpretation of blow count data, visual appearance of soils, and/or test data. Geo k� Engineers ®dam SOIL CLASSIFICATION SYSTEM FIGURE A-7 N GEI 86-88 R LABORATORY TESTS: AL CP CS DS GS %F HA SK SM MD SP TX UC CA Atterberg limits Compaction Consolidation Direct shear Grain -size Percent fines Hydrometer analysis Permeability Moisture content Moisture and density Swelling pressure Triaxial compression Unconfined compression Chemical analysis BLOW COUNT/SAMPLE DATA: Blows required to drive a 2.4 -inch I.D. split -barrel sampler 12 inches or other indicated distances using a 300 -pound hammer falling 30 inches. Blows required to drive a 1.5 -inch I.D. (SPT) split -barrel sampler 12 inches or other indicated distances using a 140 -pound hammer falling 30 inches. "P" indicates sampler pushed with weight of hammer or against weight of drill rig. NOTES: SOIL GRAPH: SM Soil Group Symbol (See Note 2) Distinct Contact Between Soil Strata Gradual or Approximate Location of Change Between Soil Strata V Water Level Bottom of Boring 22 III Location of relatively undisturbed sample 12 ® Location of disturbed sample 17 ❑ Location of sampling attempt with no recovery 10 El Location of sample obtained in general accordance with Standard Penetration Test (ASTM D 1586) procedures 26 m Location of SPT sampling attempt with no recovery ® Location of grab sample 1. The reader must refer to the discussion in the report text, the Key to Boring Log Symbols and the exploration logs for a proper understanding of subsurface conditions. 2. Soil classification system is summarized in Figure A-1. Geo Atiw 4, - Engineers KEY TO BORING LOG SYMBOLS FIGURE A-2 v> r N m 0 0 a) m 0 TEST DATA Moisture Dry Content Density Blow Group Lab Tests (%) (pcf) Count Samples Symbol 0 5 10 15 w w w LL F— p 20 25 30 35 40 BORING B-1 DESCRIPTION Surface Elevation (ft.): 24.5 - SM Brown silty fine to medium sand with occasional fine gravel and organic matter (medium dense, moist) Brown fine to medium sand with a trace of silt and occasional fine gravel (dense, moist) (fill) SP 48 a SM Gray silty fine sand (dense, moist) (fill) 64 EI . . SP -SM Brown fine to medium sand with silt (very dense, moist) (fill) ML Gray fine sandy silt with occasional organic matter and coarse 42 sand (hard, moist) (fill) ' SM Gray silty fine to medium sand (medium dense, wet) 29 El 7 El Grades to loose — ML Gray silt with occasional fine sand and organic matter (very soft, wet) . _ 2 (] MD 63 60 inti GH Gray fine sandy organic silt (very soft, moist) - 8 Q ML/PT Interbedded gray fine sandy silt and brown peat (medium stiff, _ moist) ML Gray silt with fine sand and organic matter (soft, wet) 3 Q " SM Gray silty fine sand with occasional organic matter (loose, wet) - 8 Q �/ ML Gray fine sandy silt with organic matter (medium stiff, wet) - 6 0 Q ML/SM Interbedded gray silt with organic matter and gray fine silty sand (medium stiff, loose, wet) 5 0.. - 26 Q . SP Black fine sand (medium dense, wet) ::. J Note: See Figure A-2 for explanation of symbols Geo lsoEngineers LOG OF BORING FIGURE A-3 co a) N • c • 0975-038-10 DEPTH IN FEET TEST DATA Moisture Dry Content Density Blow Group Lab Tests (%) . (pct) Count Samples Symbol 40 45 — 50- 55- 60 — 65- 5- 70 — 70- 75 75 — 80 — 33 m 52 59 59 46 BORING B-1 (Continued) DESCRIPTION Grades to dense "" SP Black fine to medium sand with occasional silt lenses Note: See Figure A-2 for explanation of symbols approximately 1/2 inch thick (dense, wet) Boring completed at 51.5 feet on 06/21/96 Ground water encountered at approximately 10.4 feet during drilling Geo % Engineers LOG OF BORING FIGURE A-3 :ejn 7/17/96 0 c) 0 0 n 0) 0 0 TEST DATA Moisture Dry Content Density Blow Group Lab Tests (%) (pcf) Count Samples Symbol BORING B-2 DESCRIPTION Surface Elevation (ft.): 24.5 MD 9 110 5- 10— MD 42 79 15- 14 1 10 ■ 2 ■ SP -SM Brown fine to medium sand with silt and occasional gravel (medium dense, moist) (fill) SP Brown fine to medium sand with occasional fine gravel and a trace of silt (medium dense, moist) (fill) ML Gray fine sandy silt with organic matter (stiff, moist) (fill) Grades to soft, wet Boring completed at 15.0 feet on 06/21/96 Ground water encountered at approximately 10.8 feet during drilling 0 5 10 15 20 25 25 30— 30 35 — 35 40— 1— 40 Note: See Figure A-2 for explanation of symbols Geo 61Engineers LOG OF BORING FIGURE A-4 0975-038-10 DEPTH IN FEET 0 TEST DATA Moisture Dry Content Density Blow Group Lab Tests (%) (pcf) Count Samples Symbol BORING B-3 DESCRIPTION Surface Elevation (ft.): 22.0 5- 10- -4 15- 20 — 25 — 30 — 35- 40 — MD 17 100 17 S 5 1 i SP -SM Brown fine to medium sand with silt and organic matter (roots) 0 (medium dense, moist) (fill) ML Gray sandy silt with occasional fine gravel (stiff, moist) (fill) SP Brown fine sand with a trace of silt (loose, moist) SM Dark gray silty sand (loose, moist) (fill) SM/ML Brown silty fine sand and gray fine sandy silt (very loose, very soft, wet) (fill?) Note: See Figure A-2 for explanation of symbols Boring completed at 15.0 feet on.06/21/96 Ground water encountered at approximately 12.0 feet during drilling —5 —10 —15 — 20 —25 —30 — 35 — 40 Geo %OEngineers LOG OF BORING FIGURE A-5 0975-038-10 TEST DATA BORING B-4 Moisture Dry Content Density Blow Group Lab Tests (%) (pcf) Count Samples Symbol 0 — 10- 28 90 15— 22 19 i 3 DESCRIPTION Surface Elevation (ft.): 24.0 SP -SM Brown fine sand with silt and fine gravel (loose, dry) (fill) SP -SM Grayish brown fine to medium sand with occasional fine gravel and silt (medium dense, moist) (fill) ML Gray fine sandy silt with occasional gravel (very stiff, moist) (fill?) SP Black fine to medium sand (very loose, wet) ML Gray silt with organic matter (soft, wet) Boring completed at 15.0 feet on 06/21/96 Ground water encountered at approximately 11.5 feet during drilling 0 5 10 15 20 25 i— 25 30—J 30 35— 1-35 40— 40 Note: See Figure A-2 for explanation of symbols Geo 4N� Engineers LOG OF BORING FIGURE A-6 14? Phase I Environmental Site Assessrnent Proposed Costco Building Site Tukwila, Washington July 23, 1996 For PriceCostco, Inc. G eoEngineers File No. 0975=0313-.10-1150/072396 Geo GEngineers July 23, 1996 PriceCostco, Inc. 999 Lake Drive Issaquah, Washington 98027 Attention: Mr. Jack S. Frank ‘\›. EARS Lv►C Consulting Engineers and Geoscientists Offices in Washington, Oregon, and Alaska GeoEngineers is pleased to submit two copies of our "Phase I Environmental Site Assessment, Proposed Costco Building Site, Tukwila, Washington." Our work was completed in general accordance with the scope of services presented in our proposal, dated June 18, 1996. Our services also were performed in general accordance with the standards for Phase I environmental site assessments outlined in ASTM (American Society for Testing and Materials) E 1527-94. We appreciate the opportunity to work with you on this project. Please contact us if you have questions regarding this report. Yours very truly, GeoEngineers, Inc. Kenneth G. Buss, P.E. Associate TMX:KRF:KGB:wd Document ID: 0975038.ESA File No. 0975-038-10 GeoEngineers, Inc. 8410 154th Avenue N.E. Redmond, WA 98052 Telephone (206) 861-6000 Fax (206) 861-6050 Primed on iecycled paper. CONTENTS Page No. 1.0 INTRODUCTION 1 2.0 SCOPE OF SERVICES 1 3.0 PREVIOUS STUDIES 2 4.0 SITE DESCRIPTION 3 4.1 PITS, PONDS OR LAGOONS 3 4,2 STAINED SOIL AND PAVEMENT 3 4.3 STRESSED VEGETATION 3 4.4 SITE DRAINAGE 3 4.5 BUILDINGS AND STRUCTURES 3 4.6 INDICATIONS OF PCBS, TRANSFORMERS AND UTILITIES 3 4.7 CHEMICALS AND HAZARDOUS SUBSTANCES 4 4.8 REFUSE AND DEBRIS 4 4.9 WATER WELLS, SUMPS AND DRAINS 4 4.10 AREAS OF STANDING WATER OR OTHER LIQUIDS 4 4.11 USTS, ASTS AND DRUMS 4 4.12 POTABLE WATER AND SEWAGE SYSTEM 4 4.13 OTHER CONDITIONS OF CONCERN 4 5.0 SURROUNDING PROPERTIES 4 6.0 SITE SOILS AND GROUND WATER 5 7.0 REGULATORY RECORDS REVIEW 5 7.1 EPA NPL 6 7.2 EPA CERCLIS LIST 6 7.3 EPA RCRA TSD FACILITIES LIST 6 7.4 EPA RCRA NOTIFIERS LIST 6 7.5 EPA ERNS DATABASE 7 7.6 ECOLOGY C&SCS LIST 7 7.7 ECOLOGY REGISTERED UST FACILITIES LIST 9 7.8 ECOLOGY LEAKING UST LIST 9 7.9 ECOLOGY MTCA SITE REGISTER 11 7.10 LANDFILL LISTS 11 8.0 SITE HISTORY AND BACKGROUND 11 8.1 AERIAL PHOTOGRAPHS 12 8.2 CITY BUSINESS DIRECTORIES 12 8.3 HISTORICAL MAPS 13 8.4 INTERVIEWS 13 8.5 ENVIRONMENTAL LIENS 14 9.0 CONCLUSIONS 14 10.0 LIMITATIONS 15 FIGURES Figure No. Vicinity Map 1 Site and Adjacent Properties - May 1996 2 May 1996 Site Photographs 3A...3C EPA and Ecology Listed Sites 4 G e o Eng i n e e r s 1 File No. 0975-038-10-1150/072396 PHASE I ENVIRONMENTAL SITE ASSESSMENT PROPOSED COSTCO BUILDING SITE TUKWILA, WASHINGTON FOR PRICECOSTCO, INC. 1.0 INTRODUCTION This report summarizes the results of our Phase I ESA (environmental site assessment) of the Proposed Costco Building Site, located south of Saxon Drive and east of Andover Park East in Tukwila, Washington. The subject property, referred to herein as the site, is an undeveloped grassy field. The site is shown relative to surrounding physical features in Figure 1. The site layout and surrounding properties are shown in Figure 2. The site currently is owned by Home Depot. We understand that Costco is considering a purchase of the property. We further understand that this ESA will be used to evaluate the potential for environmental liabilities associated with existing conditions and ownership of the property. GeoEngineers also is providing geotechnical engineering services pertaining to the property. The results of our geotechnical study will be summarized in a separate report. 2.0 SCOPE OF SERVICES The purpose of this ESA is to evaluate the presence or potential presence of recognized environmental conditions at the site as a result of current or past activities on the site or in the site vicinity. Our scope of services is in general accordance with the Phase I ESA scope identified in ASTM (American Society for Testing and Materials) E 1527-94, the standard practice for Phase I ESAs. Our specific scope of services conducted for this ESA is described below. 1. Review existing geotechnical and environmental reports pertaining to the site vicinity. 2. Review current USGS (United States Geological Survey) topographic map(s) to identify the physical setting of the property. 3. Review current federal, state and local environmental databases for listings of known or suspected environmental problems at the subject site or nearby properties. The specific databases and minimum search distances reviewed are as follows: EPA (U.S. Environmental Protection Agency) Databases Minimum Search Distance NPL (National Priorities List) 1 mile CERCLIS (Comprehensive Environmental Response, Compensation and Liability Information System) List 0.5 mile RCRA (Resource Conservation and Recovery Act) TSD (treatment, storage and disposal) Facilities List 1 mile RCRA Notifiers List of Generators and Transporters Site and Adjoining Properties ERNS (Emergency Response Notification System) List Site Geo Eng i n e e r s 1 File No. 0975-03S-10-1150/072396 Ecology (Washington State Department of Ecology) Minimum Search Distance and Local Health Department Lists Confirmed and Suspected Contaminated Sites List 1 mile Registered UST (underground storage tank) List Site and Adjoining Properties Leaking UST List 0.5 mile MTCA (Model Toxics Control Act) Site Register 0.5 mile Landfill Register 0.5 mile 4. Review regulatory agency files regarding listed facilities identified as having a potential for impacting the subject site, if any. 5. Review historical aerial photographs, city business directories, Sanborn Fire Insurance maps, Kroll maps, and Metsker maps, as available and appropriate, to evaluate development history on and adjacent to the site relative to the possible use, generation, storage, release, or disposal of hazardous substances. 6. Interview current and past property owners or others familiar with past and present uses of the site and its vicinity. 7. Identify the source(s) of potable water for the site, and the type and age of the sewage disposal system(s) used at the site, if any. 8. Conduct a visual reconnaissance of the site and adjacent properties. Specific contamination evaluation procedures, such as soil or ground water sampling and chemical analysis, were not included in this scope of services. If requested, we can provide additional information regarding these services. 3.0 PREVIOUS STUDIES We reviewed a Phase I ESA report dated September 1991 conducted for The Home Depot property located adjacent and south of the subject site. The report, prepared by Hart-Crowser, indicated that a 12,000 -gallon UST was installed in the northeast corner of the adjacent property (current location of a Home Depot structure) immediately south of the site in 1968. The UST originally stored diesel fuel. The UST was used later in the 1970s to store gasoline. According to the report the UST was removed in 1988. One soil sample was obtained from beneath the UST and analyzed for TPH (total petroleum hydrocarbons). TPH concentrations of regulatory significance were not detected in the soil sample. No reports were prepared to describe removal activities; however, a permit from the Tukwila Fire Department was obtained to remove the UST. The UST was approximately 23 years old at the time of removal. According to the report, no odors or visual indicators of petroleum impacted soils were noted during the UST removal. The Hart-Crowser report identified several other potential contamination sources on the Home Depot building property including the use and/or storage of waste oils, clean oils, parts cleaner solvent, inks, paints, pesticides and thinners. The report indicates that these materials were located and stored in a manner that limited the risk of significant subsurface contamination occurring from them. G e o Eng i n e e r s 2 File No. 0975-038-10-1150/072396 We also reviewed an environmental assessment report dated November 23, 1992, conducted for The Home Depot property by EA (EA Engineering Science and Technology). EA obtained soil samples from the following areas of potential environmental concern: former UST location, repair garage, oil storage shed, and railroad spur. EA reported that the results of the study indicated that chemicals of regulatory concern are not present in the sampled locations. 4.0 SITE DESCRIPTION The site occupies approximately 5 acres in the northeast quarter of Section 35, Township 23 N, Range 4 E, Willamette Meridian. The site elevation is approximately 25 feet above mean sea level. The site surface generally is flat with the exception of a depression along the northern portion of the site. The layout of the site and surrounding properties is shown in Figure 2. Site photographs are shown in Figures 3A, 3B and 3C. A representative of GeoEngineers performed a visual site reconnaissance on June 28, 1996. Our representative walked the site to perform the site reconnaissance. Adjacent properties were observed from the site and from public right-of-way. The site currently is undeveloped. We did not observe any evidence of the use, storage, generation, disposal or release of hazardous substances on the site during our reconnaissance with the exception of broken fertilizer bags described in section 4.7. Additional details regarding our site reconnaissance is provided below. 4.1 PITS, PONDS OR LAGOONS No pits, ponds or lagoons were observed on the subject property. 4.2 STAINED SOIL AND PAVEMENT No areas of stained soil were observed on the subject property. 4.3 STRESSED VEGETATION No stressed vegetation, believed to be related to hazardous substances, was observed on the subject property. 4.4 SITE DRAINAGE Stormwater runoff, when present, likely flows east toward the Green River. One catch basin was observed on the west side of Christianson Road in the eastern portion of the site. 4.5 BUILDINGS AND STRUCTURES There were no buildings or structures observed on site. 4.6 INDICATIONS OF PCBS, TRANSFORMERS AND UTILITIES No transformers or other equipment associated with PCBs were observed on site. Geo Eng i n e e r s 3 File No. 0975-038-10-H50/072396 4.7 CHEMICALS AND HAZARDOUS SUBSTANCES No chemicals or hazardous substances were noted on the subject site with the exception of several broken bags of "palm" fertilizer that were observed along Christianson Road in the eastern portion of the property. The fertilizer appeared to have spilled into the adjacent catch basin as shown in the photograph in Figure 3B. 4.8 REFUSE AND DEBRIS Other refuse and debris was observed on the site including drywall board, plastic bottles, concrete fragments, plywood, wooden skids, a shopping cart, metal poles, fence panels, and styrofoam. The approximate locations of significant debris piles are shown in Figure 2. 4.9 WATER WELLS, SUMPS AND DRAINS We did not observe evidence of water wells, sumps or drains on the subject site. 4.10 AREAS OF STANDING WATER OR OTHER LIQUIDS Standing water was observed in the southwestern portion of the site. Mud cracks also were observed on the remaining portions of the property indicating recent other accumulations of standing water. 4.11 USTS, ASTS AND DRUMS No evidence of USTs, ASTs (aboveground storage tanks) or buried drums was observed on the site. 4.12 POTABLE WATER AND SEWAGE SYSTEM The site does not have a sewage system or potable water supply at this time. 4.13 OTHER CONDITIONS OF CONCERN We did not observe other environmental conditions of concern related to the subject property. 5.0 SURROUNDING PROPERTIES The site is bordered by an undeveloped parcel, an old railroad grade and warehouse (Williams Industrial Supply) to the west; PriceCostco, Inc to the north; the Green River and Christianson Trail to the east; and The Home Depot to the south. We did not observe any evidence of the use, storage, generation, disposal or release of hazardous substances on immediately adjacent properties during our site reconnaissance with the exception of one full 55 -gallon drum labelled "ZEP", an empty 30 -gallon drum and a 3/4 -full 5 -gallon can of kerosene G e o Eng i n e e r s 4 File No. 0975-038-10-1150/072396 observed at the warehouse property, located approximately 50 feet west of the subject site. These containers were located under steps at the northeast corner of the structure. We did not observe evidence of leaks or spills around these containers. 6.0 SITE SOILS AND GROUND WATER Our knowledge of the near -surface soil and ground water conditions on the site is based on the results of our concurrent geotechnical study which included the completion of four exploratory borings. The results of exploratory borings (B-1 through B-4) indicate that site soils consist of fill material composed of fine to medium sand with occasional gravel underlain by native interbedded sands and silts with organics to a depth of 38 feet below the ground surface. A peat layer was encountered at approximately 23 feet. Poorly graded sands were encountered beneath the interbedded silt to the total depth explored. Ground water was encountered at a depth of approximately 10 feet beneath the surface in the borings. B-1 was completed to a depth of approximately 50 feet beneath the ground surface. B-2, B-3 and B-4 were completed to a depth of approximately 15 feet beneath the ground surface using hollow -stem auger drilling equipment owned and operated by Holt Drilling, Inc. A detailed description of field methods, soil conditions and characteristics beneath the site will be presented in our geotechnical report. The approximate boring locations are shown in Figure 2. We did not observe physical evidence (soil staining, water sheens or incidental odors) of subsurface contamination by hazardous substances in the explorations completed for our geotechnical study. 7.0 REGULATORY RECORDS REVIEW A review of pertinent regulatory records was conducted according to ASTM E 1527-94 for those facilities that currently or previously have occupied properties in proximity to the subject site. The approximate listed site locations are shown in Figure 4. The records reviewed included: • EPA NPL • EPA CERCLIS List • EPA RCRA TSD Facilities List • EPA RCRA Notifiers List -Transporters and/or Generators • EPA ERNS Database • Ecology C&SCS (Confirmed and Suspected Contaminated Sites) List • Ecology Registered UST Facilities List • Ecology Leaking UST Sites List • Ecology MTCA Site Register • Solid Waste Sites of Record (Various Information Sources) • e o E n g i n e e r s 5 File No. 0975-038-10-1150/072396 Those listed facilities located within specified distances from the subject site were evaluated for potential impact to the subject site. We did not identify any listed facilities within the search distances that, based on our experience, represented a significant environmental risk to the subject site, with the exception of three sites: Nordstrom Distribution Center (upgradient from site) and Shasta Beverage Inc. (upgradient from site). We did review the regulatory files for the above listed facilities. A summary of the regulatory list content and our file review is presented in the following sections. • 7.1 EPA NPL The EPA NPL includes sites that officially are designated as priority cleanup sites. A review of the NPL, dated October 2, 1995, revealed that neither the subject site nor facilities located within 1 mile of the subject site are identified on this database. 7.2 EPA CERCLIS LIST The EPA CERCLIS List includes sites where hazardous substances are known or suspected to have been released and where assessment and remediation under EPA's CERCLA (Comprehensive Environmental Response, Compensation and Liability Act) program may be in progress. A review of the EPA CERCLIS List, dated March 25, 1996, revealed that neither the subject site nor facilities located within 1/2 mile of the subject site are identified on this database. 7.3 EPA RCRA TSD FACILITIES LIST The EPA's RCRA TSD Facilities database is a listing of those businesses that are permitted as treatment, storage or disposal facilities of hazardous waste. A facility name appearing on this list does not imply that an uncontrolled release or spill of hazardous waste into the subsurface has occurred at the facility. A review of the database, dated February 29, 1996, revealed that neither the subject site nor facilities located within 1 mile of the subject site are listed on this database. 7.4 EPA RCRA NOTIFIERS LIST The EPA RCRA Notifiers List identifies facilities that are classified by the EPA as hazardous waste generators, transporters or handlers. A facility name appearing on this list does not imply that a release or spill of hazardous waste into the subsurface has occurred at the facility. A review of the EPA RCRA Notifiers List, dated February 29, 1996, revealed that the subject site is not identified on this database. However, one facility located adjacent to the site is listed on this database. Geo E n g i n e e r s 6 File No. 0975-038-10-J150/072396 ID No. Business Address Status 15 Costco Central Printshop 1160 Saxon Drive Small quantity generator 16 Hovair Systems 1210 Andover Park Small quantity generator There are no indications in the records that hazardous substances have been released into the environment at these Iocations. 7.5 EPA ERNS DATABASE The EPA ERNS database contains a listing of releases of oil and hazardous substances reported to various federal agencies between October 1986 and February 1996. A review of the database, dated February 16, 1996, revealed that the subject site is not identified on this database. 7.6 ECOLOGY C&SCS LIST The Ecology C&SCS List catalogs sites where confirmed releases of hazardous substances have occurred and also includes sites for which Ecology has received only unconfirmed information indicating that a release of a hazardous substance might have occurred. A review of the Ecology C&SCS database dated November 13, 1995 revealed that the subject site and adjacent properties are not listed on the database; however, nine facilities within 1 mile of the subject site are identified on this database. The approximate listed site locations are shown in Figure 4. These facilities are described below. G e o E n g in e e r s 7 File No. 0975-038-10-1150/072396 ID No. Business Address Status 1 American Can Co. 400 Baker Blvd. 1 mile north of the site Drinking water = suspected 2 CAM Properties 18250 68th Ave. S. 1/2 mile south of the site Soil = confirmed ground water = suspected 3 Chemcentral Solvents Co. 7601 S. 190th St. 1 mile south of the site Ground water = confirmed Soil = confirmed Surface water = suspected 4 GACO Western, Inc. 18700 Southcenter Pkwy 1 mile southwest of the site Ground water = confirmed Soil = confumed Air = suspected Sediment = suspected 5 Motor Oil Supply 18815 72nd Ave. S. 3/4 mile south of the site Soil = confirmed Sediment = suspected Surface water = suspected 6 NC Machinery 17025 West Valley Hwy. 1/2 mile north of the site Soil = suspected 7 Sternoff Metals Corp 7600 SW 43rd St. 1/2 mile east of the site Ground water = confirmed Soil = confirmed Air = suspected Surface water = suspected 8 US Printing Inc. 17300 West Valley Hwy. 1/2 mile northeast of the site Soil = confirmed Surface water = confirmed Ground water = suspected Sediment = suspected 9 United Construction Supply 18298 Andover Park W. 1/2 mile southwest of the site Surface water = suspected The nine Listed facilities are located 1/2 mile or more from the subject site in an inferred downgradient or crossgradient location in relation to the site. Based on these factors, it is our opinion that the listed facilities are not likely to have impacted the subject site. Therefore, we did not review agency files for the listed facilities. G e o Eng i n e e r s 8 File No. 0975-038-10-1150/072396 7.7 ECOLOGY REGISTERED UST FACILITIES LIST The Ecology Registered UST Facilities List tracks permitted, active and decommissioned USTs. A review of the Ecology UST Facilities List, dated April 18, 1996, revealed that the subject site and adjacent properties are not listed as registered UST facilities. 7.8 ECOLOGY LEAKING UST LIST The Ecology Leaking UST (LUST) Sites List identifies sites where subsurface releases from USTs and related underground systems have occurred. A review of the Ecology LUST List, dated February 2, 1996 revealed that the subject site and adjacent properties are not listed on this database; however, six facilities located within 1/2 mile of the subject site are identified on this database. The approximate listed site locations are shown in Figure 4. These facilities are described below. ID No. Business Address Status 10 Unocal Station #6232 18060 West Valley Hwy. 1/4 mile southeast of the site Soil and ground water affected, cleanup started 2 CAM Properties 18250 68th Ave, S. 1/2 mile southeast of the site Soil = confirmed ground water = suspected 11 G. Raden & Sons 18289 Olympic Ave. S. 1/4 mile south of the site Ground water affected, cleanup started 12 Nordstrom Distribution Ctr. 1201 Andover Park E. 1/4 mile west of the site Soil affected, reported cleanup 13 Shasta Beverages 1227 Andover Park E. 1/4 mile west of the site Soil affected, reported cleanup 14 Ryder Truck Rental 17850 West Valley Hwy. 1/4 mile southeast of the site Soil affected, monitoring Four of the six listed facilities are located in an inferred down gradient or cross gradient location in relation to the subject site, or are located across the Green River from the subject site. Based on these factors, it is our opinion that these listed facilities are not likely to have impacted the subject site. Therefore, we did not review agency files for these four listed facilities. We did review Ecology files for the Nordstrom Distribution Ctr. and Shasta Beverage facilities because these sites are located within 1/4 mile upgradient from the site. G e o E n g i nee r s 9 File No. 0975-038-10-1150/072396 The Nordstrom Distribution Center file contained several NDWA ("Notification of Dangerous Waste Activities") documents dated from March 31, 1983 through July 13, 1993. These documents were for generation and proper disposal of aqueous acid solution -mercury, water/oil/sludge, aqueous alkaline solution, mercury and zinc and halogenated organic compounds, and other chemical use such as sludge thinner, RQ Waste (flammable liquid), and lacquers. A warning letter dated April 4, 1986 was presented to Nordstrom Distribution Center by Ecology for the release of hydraulic oil into the storm sewer. Ecology did not enforce a cleanup but submitted a warning to the facility. Ecology also recommended evaluation of discharge potentials and to install drip pans to control releases. In addition, a 10,000 -gallon diesel UST was removed in 1994. The tank was logged as in good condition and passed the tightness test. Soil was removed from around the UST until TPH concentrations at the limits of the excavation were documented to be less than MTCA Method A cleanup levels. Ground water was not encountered in the excavation. However, borings were completed to verify clean ground water and soil in the vicinity of the tank. A "UST Closure Report, Nordstrom Distribution Center, 1201 Andover Parkway East, Tukwila, Washington" dated January 1995 was completed by AGRA Earth Consultants. Ground water flow direction for the facility was reported to be toward the northwest. Results of a referenced Phase I ESA report dated October 24, 1994 indicated that there was no indication of any other potential sources of contamination at the Nordstrom facility. The Ecology file for Shasta Beverage, Inc. includes an Industrial Waste Discharge Permit issued in 1976 for use of maltic acid, citric acid, sodium benzoate, sodium citrate, type 50 inverted sugar, corn syrup concentrates, B.P.A. powder. The permit information identified that the raw chemicals are dry, granulated and stored in bags in their warehouse. Sugars are stored in tanks. No hazardous materials are used or generated in the process. According to the file, the facility also possesses a Metro industrial Effluent Neutralization System where pH can be measured before liquid can be discharged into the sanitary sewer. The file included an anonymous environmental complaint in July 1989 for a release of oil/petroleum into the soil. Apparently someone believed that there is a LUST in the front of the building. The owners indicate that the tank is not in use and was pumped and filled with water. The file information indicates that there were elevated concentrations of xylenes beneath the site. The file was unclear as to from what medium the xylene samples were obtained and whether or not the UST was removed. Based on our experience in the area and the information in the Ecology file, it is our opinion that the contaminants from this facility ware not likely to have migrated as far as the subject site. G e o E n g i n e e r s 10 File No. 0975-038-10-1150/072396 7.9 ECOLOGY MTCA SITE REGISTER The Ecology MTCA Site Register, published twice monthly, identifies sites for which Ecology has recently received reports of known or suspected contamination. The Site Register usually includes sites that also are Iisted on Ecology's leaking UST lists or C&SCS List. A review of the Site Registers from October 10, 1995 through June 4, 1996 revealed that the• subject site and adjacent properties are not listed on this database; however, three facilities located within 1 mile of the subject site are identified on this listing. ID No. Business Address 7 Sternoff Metals Corporation 7600 SW 43rd St. 1/2 mile west of the site 3 Chemcentral/Seattle Facility 7601 S 190th St. 1 mile southeast of the site 1 American Can Company 400 Baker Blvd. 1 mile north of the site Based on the relative distance between the listed facilities and the subject site and their crossgradient or downgradient positions relative to the site, it is our opinion that activities at these facilities are not likely to have impacted the subject site. Therefore, we did not review agency files for the listed facilities. 7.10 LANDFILL LISTS "The Northwest Environmental Compliance Report Quick Reference Guide" (April 1993), "Landfills in Washington" (source unknown, April 1996) and "Area Landfills" (Associated General Contractors of Washington Water Quality Manual, 1990) were reviewed to evaluate the potential presence of landfills in the site vicinity. These references did not identify any current or abandoned landfills within 1/2 mile of the subject site. 8.0 SITE HISTORY AND BACKGROUND Our understanding of the history of the subject site is based on a review of historical aerial photographs, city business directories, historical maps and interviews with individuals familiar with the subject site. Site use history is described below. G e o E n g i n c e r s 11 File No. 0975-038-10-1150/072396 8.1 AERIAL PHOTOGRAPHS Aerial photographs with the following dates were reviewed: 1936, 1946, 1960, 1969, 1974, 1980, 1985, 1990 and 1995. The scale of the photographs we reviewed allowed for the interpretation of general site area development/configuration, such as identifying most structures, roadways and clearings. However, the scale of the photographs did not allow for identification of specific site features, such as fuel pumps, wells or chemical storage areas on the site, if any. The site is undeveloped and appears to be actively farmed on the 1936 through the 1960 photographs we reviewed. It appears that construction material and parked vehicles are located on the site in the 1969 photograph. However no structures are apparent on the site in this photograph. The site remains undeveloped on the 1974 through the 1995 photographs we reviewed. However, several rectangular objects, possibly trailers, were observed in the northwest portion of the site in the 1990 photograph. A road extends along the extreme eastern portion of the site in a north -south direction on the 1990 and 1995 photographs we reviewed. The surrounding adjacent properties appear undeveloped on the 1936 through 1960 photographs with the exception of a farm located on the southern adjacent property on the 1960 photograph. It appears that a structure is under construction on the northern adjacent property on the 1969 photograph. Additionally, a railroad and warehouse are apparent on the western adjacent property; a large structure is apparent south of the site on the 1969 photograph. The railroad is not apparent on any of the other photographs we reviewed. All adjacent properties in the vicinity of the site appear similar to their current structural arrangement on the 1974 through 1995 photographs we reviewed with two exceptions. A different larger and longer structure is located on the southern adjacent property and a square small structure is located on the vacant lot west of the site on the 1990 photograph. We did not identify any evidence of significant historical industrial use of the site or immediately adjacent properties in aerial photographs we reviewed. 8.2 CITY BUSINESS DIRECTORIES We reviewed Polk directories dated 1967, 1971-72, 1977, 1982 and 1987. In addition, we reviewed a Cole directory dated 1993-94. The subject site is not listed in these directories; it does not have a street address. The directories we reviewed included listings for industrial distributor facilities occupying properties adjacent to the site. The directories also included listings for a Tukwila Printing & Graphics facility located adjacent to the west of the site in 1987. No other industrial or commercial use of the site or its vicinity was identified in the directories we reviewed. G e o Eng i n e e r s 12 File No. 0975-038-10-1150/072396 8.3 HISTORICAL MAPS We reviewed Kroll, Metsker and Sanborn Fire Insurance maps for coverage of the site and vicinity. Available Metsker and Sanborn Fire Insurance maps do not cover the site area. There were indications of industrial development on immediately adjacent properties on the Kroll maps (1972 and 1987) we reviewed. The structures identified on these maps appear to be the - distributors currently operating in the site vicinity. 8.4 INTERVIEWS GeoEngineers personnel conducted interviews with the following individuals for information regarding past and present uses of the site and its vicinity: • Mr. Carston Thompson, King County Health Department, Solid Waste Division, interviewed on July 2, 1996. • Mr. Al Metzler, Tukwila Fire Department, interviewed on July 2, 1996. • Mr. Pat Brodin, Tukwila Public Works, July 2, 1996. • Mr. Ray Oneida, Union Pacific Railroad, interviewed on July 3, 1996. • Mr. Mark Beers, Construction Engineer for the Home Depot, interviewed on July 16, 1996. Mr. Thompson indicated that the Health Department did not have information in their files for the site regarding hazardous material release incidents or calls. Mr. Metzler indicated that the fire department does not keep records of hazardous material response related incidents in their files. Mr. Brodin indicated that city sewer and potable water are not connected to the site at this time. However, a sewer line extends east -west on Saxon Drive and a manhole is located near the old railroad grade and Saxon Drive for access. The waste liquid flows west to Andover Park East and then north to Strander Boulevard. The waste flows to the Renton Treatment Plant located north of I-405. Once the waste is treated it is discharged into the Puget Sound according to Mr. Brodin. Additionally, potable water available to the site originates from surface water from Chester Morris Lake and Lake Youngs (Kent). The water from the lakes is pumped through the Cedar River Pipeline to its intended destination, including Tukwila. Mr. Oneida indicated that the rail line located west of the site is probably private. Mr. Oneida indicated that Union Pacific does not use these tracks for any purpose. Mr. Beers indicated that the subject site has been owned by Home Depot for three years. The Home Depot acquired the property from the bankruptcy court of Frederick & Nelson. The site has been undeveloped with the exception of the asphalt paved road constructed in the eastern portion of the site in 1995. According to Mr. Beers the road was constructed in hopes to connect up with Christianson Road. Mr. Beers stated that fill was placed on the subject site from other areas of the Home Depot property during construction activities in 1993. He is unaware of any ASTs, USTs, use, generation, storage, release or disposal of hazardous substances on the subject site. Mr. Beers indicated that a partial irrigation system is installed along the southern site GeoEngineers 13 File No. 0975-038-10-1150/072396 property boundary. He stated that when Costco purchases the site, the water system will be disconnected from the Home Depot water source. Mr. Beers indicated that the old railroad grade belonged to BNSF Burlington Northern Railroad. Apparently the rails were abandoned in 1994 upon purchase of the site according to Mr. Beers. Mr. Beers has no knowledge of the release of hazardous substances originating from the railroad west of the site. The persons we interviewed indicated that they were unaware of any releases of hazardous substances on the site or immediately adjacent properties. The facilities located west, south and north of the site generally are heated by electricity or gas. There are no known underground heating oil tanks on adjacent properties. 8.5 ENVIRONMENTAL LIENS During the course of our research, there were no indications that environmental liens had been filed against the subject property. 9.0 CONCLUSIONS GeoEngineers has performed an ESA of the proposed Costco building property, located south of Saxon Drive and east of Andover Park West in Tukwila, Washington. The ESA was conducted in general accordance with the scope and limitations of ASTM E 1527-94 and the standard of practice in this area at this time. It is our opinion that the risk of on-site soil and ground water contamination of regulatory significance is low based on the results of our study. Research findings from our ESA study indicated no evidence of recognized environmental conditions in connection with the property. It is our opinion that the fertilizer observed on site does not represent a risk of contamination of regulatory significance; however, we recommend removal of the fertilizer hags, spilled fertilizer and other debris prior to site purchase. Potential off-site sources of contamination were identified during our study and include: • The former UST on the adjacent Home Depot property • Costco Central Print Shop • Tukwila Printing and Graphics • Facilities identified on regulatory lists located within the search distances used for this study. The risk of existing site contamination originating from these potential off-site sources is considered low for the following reasons: • Contamination of regulatory significance was not reported during UST removal activities on the property immediately south of the site. Additionally, ground water contamination from this source, if present, likely would have flowed predominantly east, toward the Green River. • The northern adjacent Costco paint shop is identified as a small quantity generator and there have been no reported hazardous substance releases associated with the facility. Additionally, the subject site is located in an inferred crossgradient position relative to this GeoEngineers 14 File No. 0975-038-10-1150/072396 facility. Contaminants originating from this facility, if present, are not likely to have migrated in the direction of the subject site. • The Tukwila Printing and Graphics Facility is not identified on the regulatory lists at this time. • Nearby facilities with contamination identified on regulatory lists are located either downgradient, crossgradient, or a significant distance (more than 1/4 mile) from the site. Contaminants originating from these facilities, if present, are not likely to have migrated as far as the subject site based on our experience. 10.0 LIMITATIONS This ESA has been prepared for use by Mr. Jack S. Frank of PriceCostco and his authorized agents. This report is not intended for use by others and the information contained herein is not applicable to other sites. If a lending agency or other parties intend to place reliance on the product of our services, we require that those parties indicate in writing their acknowledgement that the scope of services provided and the general conditions under which the services were rendered are understood and accepted by them. This is to provide our firm with reasonable protection against open-end litigation by third parties with whom there would otherwise be no contractual limits to their actions. GeoEngineers makes no warranties or guarantees regarding the accuracy or completeness of information provided or compiled by others. The information presented in this report is based on the above-described research and two recent site visits. GeoEngineers has relied upon information provided by others in our description of historical conditions and in our review of regulatory databases and files. The available data do not provide definitive information with regard to all past uses, operations or incidents at the site or adjacent properties. No ESA can wholly eliminate uncertainty regarding the potential for recognized environmental conditions in connection with a property. Performance of this practice is intended to reduce, but not eliminate, uncertainty regarding the potential for recognized environmental conditions in connection with a property. There is always a potential that areas with contamination that were not identified during this ESA exist at the site or in the study area. Further evaluation of such potential would require additional research, subsurface exploration, sampling and/or testing. Some substances may be present in the site vicinity in quantities or under conditions that may have led or may lead to contamination of the subject site but are not included in current local, state or federal regulatory definitions of hazardous substances or do not otherwise present current potential liability. GeoEngineers cannot be responsible if the standards of all appropriate inquiry or regulatory definitions of hazardous substances change or if you are required to meet more stringent standards in the future. GeoEngineers 15 File No. 0975-038-10-1150/072396 GeoEngineers has performed this ESA of Proposed Costco Building in Tukwila, Washington in general accordance with the scope and limitations of ASTM E 1527-94. Within the limitations of scope, schedule and budget, our services have been executed in accordance with the generally accepted environmental science practices for ESAs in this area at the time this report was prepared. No warranty or other conditions, express or implied, should be understood. O We appreciate the opportunity to be of service to PriceCostco, Inc. Please call if you have questions regarding this report. TMK:KRF:MSR:KGB:wd Document ID: 0975038.ESA Yours very truly, GeoEngineers, Inc. Tina M. King Environmental Geologist Mary S. Rutherford, P.E. Associate Kenneth G. Buss, P.E. Associate Copyright ° 1996 by GeoEngineers, Inc., All rights reserved GeoEngineers 16 File No. 0975-038-10-1150/072396 975-38-10 07/05/96 2 CONTOUR INTERVAL 25 FEET Reference: USGS 7.5' topographic quadrangle maps "Renton, Wash.' and Des Moines, Wash.", photorevised 1973. C r) JUL 16 2013 • COIN/11/101V! i DEVELOPMEN Project Narrative Fueling Facility Expansion Costco Wholesale 451 Costco Drive, Tukwila, WA 98188 APN No. 362304-9107 Costco Loc. No. 6 July 15, 2013 Expansion of the fueling facility will consist of an additional row of multi -product gasoline dispensers (six fueling positions), a 29 -foot by 88 -foot fueling island canopy extension (2,552 square feet for a total canopy area of 6,392 square feet), and associated site improvements. Site improvements include the relocation of parking adjacent to the fueling facility and minor grading and utility work associated with the expansion. The fueling facility will continue to operate, as approved under the existing land use approvals, with regard to the hours of operation and staffing levels. The new canopy will be designed to match the existing canopy and canopy columns. The existing Costco Gasoline canopy signage, approximately 27 square feet on the west and south facade, will be relocated and replaced with Costco Gasoline canopy signs that are approximately 20 square feet in size and centered on the facade. New canopy signage will also be installed on the north and east canopy facades. Signage on these facades are exempt from planning review because these signs are not visible from the public right-of-way. The intent of the expansion is to improve on-site circulation for the established membership base utilizing the facility. Circulation improvements include providing additional depth to the vehicle queuing area (proposed queuing area depth is 125 feet) and providing six (6) additional fueling positions. While the expansion is not anticipated to generate a significant number of new trips to the fueling facility, it should provide a more efficient fuel purchasing experience for the members already utilizing the facility at this location. The project will remove 2 parking stalls for a total of 766 off-street parking stalls for the warehouse and regional optical facility. The number of stalls exceeds the City required off- street parking minimum of 566 stalls. Landscaping within the project area is designed to City standards for parking lot landscaping, and approximately 76 square feet of overall landscape area will be removed from the project. There is 1,529 square feet of existing landscaping within the area being disturbed; the proposed landscape area is 1,453 square feet. Existing front yard landscaping will be enhanced in degraded areas to meet City standards. Construction of the fueling facility and site improvements will be completed in a single phase and commence after approval of the applicable permits. The existing fueling facility will remain open during construction of the expansion, and night construction will be proposed through an associated Noise Variance application. 1 DESIGN REVIEW JUSTIFICATION The City of Tukwila Board of Architectural Review is the deciding body for this Design Review application. The City of Tukwila Municipal Code Section 18.60.050 identifies Design Review Criteria that must be addressed to for the project. The following identifies criteria specific to commercial development along with our justification response to each criteria: 1. Relationship of Structure to Site a. The site should be planned to accomplish a desirable transition with the streetscape and to provide for adequate landscaping and pedestrian movement. RESPONSE: The existing fueling facility is located on the southwest corner of Costco Drive and Christensen Drive, both private drives. The project is separated from both drives by a pedestrian sidewalk and mature landscaping. The mature landscaping includes trees, shrubs, and groundcover which provide a filtered screen transition for the site. The expansion will be to the southwest portion of the canopy; therefore, the existing landscape transition and pedestrian sidewalk will not be impacted by this project. b. Parking and service areas should be located, designed and screened to moderate the visual impact of Targe paved areas. RESPONSE: The existing landscape frontage along Costco Drive and Christensen Drive is consistent with current parking lot landscape screening standards. The parking within the project area will be designed to meet or exceed City parking lot landscaping requirements. These landscape elements serve to filter the visual impact of the parking and queuing area, and provide visual depth to the site. c. The height and scale of each building should be considered in relation to its site. RESPONSE: The fueling canopy addition will be designed to match the existing fueling canopy. The canopy height and dimensions are specified by City adopted regulations governing vehicular accessibility and storm drainage. The canopy addition will be set back from the existing north canopy edge, providing a modulation of the north canopy elevation. 2. Relationship of Structure and Site to Adjoining Area a. Harmony in texture, line and masses is encouraged. RESPONSE: The canopy addition will be designed to match the existing texture and color of the existing canopy. Many of the surrounding buildings are also owned by Costco and are designed in harmony with the fueling facility. Similar features include the use of split face concrete, flat roofs, and the use of grey in the building's color. b. Appropriate landscape transition to adjoining properties should be provided. RESPONSE: The landscape transition to the adjoining property south of the fueling facility includes existing trees and shrubs adjacent to the fueling facility, and existing trees, shrubs, and ground cover at the perimeter of the property. This landscaping 2 between the south adjoining property and fueling facility exceeds the landscaping requirements for the Tukwila Urban Center (TUC) zone. c. Public buildings and structures should be consistent with the established neighborhood character. RESPONSE: The expansion will be designed to match the existing fueling facility canopy and canopy columns. d. Compatibility of vehicular and pedestrian circulation patterns and loading facilities in terms of safety, efficiency and convenience should be encouraged. RESPONSE: The fueling facility is located on the periphery of the Costco site, away from pedestrian circulation patterns, to provide safe separation of pedestrian and auto oriented uses. The project will expand the existing vehicular queuing area and provide additional fueling positions to reduce wait times and provide a more efficient fuel purchasing experience for the members already utilizing the facility at this location. e. Compatibility of on-site vehicular circulation with street circulation should be encouraged. RESPONSE: The existing driveways to Costco Drive and Christensen Drive will remain unchanged. Access to the fueling facility will be from the Costco Drive driveway. The expansion will eliminate parking space conflicts with the fueling facility access and provide for additional queuing area by separating the queuing area from the optical facility. These improvements, combined with the additional fueling positions, should allow Costco to efficiently serve members while maintaining good on-site and street vehicular circulation. 3. Landscape and Site Treatment a. Where existing topographic patters contribute to beauty and utility of a development, they should be recognized, preserved and enhanced. RESPONSE: The expansion will involve minimal site grading. Existing topographic patters will be maintained. b. Grades of walks, parking spaces, terraces and other paved areas should promote safety and provide an inviting and stable appearance. RESPONSE: The project will maintain the existing minimal slopes within walking, parking, and other paved areas. c. Landscape treatment should enhance architectural features, strengthen vistas and important axis, and provide shade. RESPONSE: Existing landscaping includes frontage trees spaced approximately 20 feet apart, evergreen shrubs, ground cover, parking lot trees within planter islands, perimeter trees and landscaping adjacent to the south property line, and trees along south side of the fueling facility. The project will remove approximately five (5) existing trees and provide approximately ten (10) new trees with revised landscaping within the 3 project area. The existing and improved landscaping enhance the site and provide additional shading. d. In locations where plants will be susceptible to injury by pedestrian or motor traffic, mitigating steps should be taken. RESPONSE: All existing and proposed landscaping within the project area is protected by raised curb as required by the Zoning Code to protect plants from motor traffic. e. Where building sites limit planting, the placement of trees or shrubs in paved areas is encouraged. RESPONSE: The existing site contains trees and shrubs along the street frontage and within parking lot landscape islands. The project will improve the parking lot landscape area by adding additional trees, landscape islands, and landscape separators between parking spaces and the fueling facility. f. Screening of service yards and other places, which tend to be unsightly should be accomplished by the use of walls, fencing, planting or combinations of these. Screening should be effective in winter or summer. RESPONSE: The site has been screened according to City Code requirements with frontage trees and evergreen shrubs. Ground -mounted mechanical equipment will also be screened with planting material per the City's standards. g. In areas where general planting will not prosper, other materials such as fences, walls, and paving of wood, brick, stone, or gravel may be used. RESPONSE: Other materials are not proposed at this time. h. Exterior lighting, when used, should enhance the building design and the adjoining landscape. Lighting standards and fixtures should be of a design and size compatible with the building and adjacent area. Lighting should be shielded, and restrained in design. Excessive brightness and brilliant colors should be avoided. RESPONSE: Costco's under canopy and signage lighting is unique to Costco in that it is not designed with an excessive number of bright lights to attract customers. Instead, Costco's fueling facility lighting is muted to reduce off-site glare and impacts to night skies. The lighting for the under canopy addition will be designed to face downward with full cutoff LED fixtures to reduce light source visibility from outside the site while providing a safe fueling environment. 4. Building Design a. Architectural style is not restricted; evaluation of a project should be based on quality of design and relationship to surroundings. Response: The expansion is within an established retail area and not visible from the public right-of-way. The expansion will carry the existing canopy design, colors, and materials through to the canopy addition. The canopy will remain consistent with the theme and design of the surrounding neighborhood. 4 b. Buildings should be to appropriate scale and be in harmony with permanent neighborinq developments. Response: As stated previously, the canopy expansion will carry the existing canopy design, colors, and materials through to the canopy addition. The size of the canopy expansion is specified by stormwater requirements to isolate the under canopy area during storm events. The roof of the canopy is consistent with the roof designs for surround buildings. Unlike retail fueling facilities, Costco's fuel dispenser canopy is not designed with bright colors and lighting to attract customers, but is more subdued to blend into the surrounding environment. Furthermore, the signage, which is limited in comparison to other retail facilities, is positioned in the center of the canopy fascia to provide a visual break in the canopy fascia plane. c. Building components, such as windows, doors, eaves, and parapets should have good proportions and relationship to one another. Building components and ancillary parts shall be consistent with anticipated life of the structure. RESPONSE: The expansion will create a facade modulation for the canopy that is well proportioned and enhances the visual depth of the canopy. The canopy expansion will be constructed with steel beams, steal fascia panels, and split face concrete canopy column cladding that will endure the life of the structure. d. Colors should be harmonious, with bright or brilliant colors used only for accent. RESPONSE: The addition will match the existing canopy colors which are harmonious with the surrounding area. The new signage will have colors that will match the existing signage. e. Mechanical equipment or other utility hardware on roof, ground, or buildings should be screened from view. RESPONSE: The project will screen ground -mounted vapor recovery equipment with landscape screening per the City's Zoning Code. f. Exterior lighting should be part of the architectural concept. Fixtures, standards and all exposed accessories should be harmonious with building design. RESPONSE: The existing full cutoff parking lot lighting will remain within the project area. The lighting for the under canopy addition will be designed to face downward with full cutoff LED fixtures to reduce light source visibility from outside the site. Signage eyebrow lighting will also be shielded and downward facing. The lighting for the facility is consistent with the surrounding retail and manufacturing facilities in the area. g. Monotony of design in single or multiple building projects should be avoided. Variety of detail, form and fitting should be used to provide visual interest. RESPONSE: Since the project involves an addition to the existing fueling canopy, the building design, color, and materials will match the existing canopy. Visual interest will be enhanced with the fascia modulation created by the addition. This modulation will provide visual depth and differentiate the site from other fueling facilities in the vicinity. 5 5. Miscellaneous Structures and Street Furniture a. Miscellaneous structures and street furniture should be desiqned to be part of the architectural concept of desiqn and landscape. Materials should be compatible with buildinqs, scale should be appropriate, colors should be in harmony with buildings and surroundings, and proportions should be to scale. RESPONSE: The existing fueling facility is located on the southeast corner of two private drives with large commercial retailers and manufactures in the vicinity. Miscellaneous structures and street furniture are not proposed with this project as this project expands an existing auto -oriented use and does not front a public right-of-way. b. Lighting in connection with miscellaneous structures and street furniture should meet the guidelines applicable to site, landscape, and buildings. RESPONSE: Existing parking lot lighting and new canopy lighting will be revised as previously discussed. No changes to lighting along the private streets fronting the fueling facility are proposed with this project. 6. Consistency with adopted plans and regulations (TMC 18.100.030): Demonstrate the manner in which the proposal is consistent with, carries out and helps implement applicable state laws and the regulations, policies, objectives and goals of the City of Tukwila Comprehensive Plan, the City of Tukwila's Development Regulations and other official laws, policies and objectives for the City of Tukwila. RESPONSE: The City's Comprehensive Plan and Zoning Map designate the site as Tukwila Urban Center. The expansion is a use that is consistent with this designation. The Comprehensive Plan identifies the following goal for all commercial projects: Goal 1.7 — Commercial districts that are visually attractive and add value to the community, are visitor and pedestrian friendly, are designed with pride and constructed with quality workmanship, are secure and safe with adequate lighting and convenient access, are uncongested with smooth -flowing traffic patterns, are well-maintained with adequate streetscape landscaping, and are wholesome and in harmony with adjacent uses. The project is consistent with this goal as the expansion will match the quality of the existing fueling facility and provide a facade modulation to add visual distinction. The additional gasoline dispensers and expanded queuing area are designed to reduce queuing wait times, which should reduce congestion during peak fueling periods. Furthermore, the expansion is a continuation of an existing safe and well landscaped fueling facility that has been in harmony with the surrounding uses since opening over a decade ago. The Comprehensive Plan also identifies goals and policies specific to the Tukwila Urban Center Zone that this project is consistent with. One of these goals is the Urban Development goal for the Tukwila Urban Center which states the following: Goal 10.2 Urban Development — Encourage and allow a central focus for the Tukwila Urban Center, with natural and built environments that area attractive, functional, and 6 distinctive, and supports a range of mixed uses promoting business, shopping, recreation, entertainment, and residential opportunities. The policies associated with this goal address site design, parking, building design, and economic development with the intent of encouraging well designed projects that support business in the zone. This expansion is scaled to effectively and efficiently service current and anticipated future member demands. The facility is supported by a well-designed internal network of vehicle drive aisles and private roads that allow for vehicle circulation. The expansion has been specifically designed to separate the queuing area from the parking area to further alleviate congestion. While the fueling facility is intentionally separated from pedestrian paths to avoid pedestrian conflicts with this auto -oriented use, pedestrian paths are located long Costco Drive and Christensen Drive. These pedestrian paths also provide access to the Green River Trail to encourage pedestrian connectivity. As previously mentioned, the project contains several features that will make for an attractive and quality expansion while continuing to provide a retail service to the surrounding area at a scale that is appropriate for present and forecasted demand. CONCLUSTION: Based on the forgoing responses to Design Review approval criteria, the Board of Architectural Review is justified in approving the Design Review application for this project. 7 Minnie Dhaliwal, Planning Supervisor City of Tukwila Community Development 6200 Southcenter Boulevard Tukwila, WA 98188 CIVIL ENGINEERING, LAND PLANNING, SURVEYING July 15, 2013 COURIER DELIVERY (206) 431-3685 RE: Design Review Application Costco Wholesale Retail Fueling Facility Expansion 451 Costco Drive, Tukwila, Washington 98188 Costco Loc. No. 6 / Our Job No. 7880 Dear Minnie: RECEIVED JUL 161013 r, r)wr_Lui'MILN f On behalf of our client Costco Wholesale (Costco), Barghausen Consulting Engineers, Inc. is submitting Design Review Application for the above -referenced project. We understand the project will require Board of Architectural Review approval. Expansion of the fueling facility will consist of an additional row of multi -product gasoline dispensers (six fueling positions), a 29 -foot by 88 -foot fueling island canopy extension (2,552 square feet for a total canopy area of 6,392 square feet), and associated site improvements. Site improvements include the relocation of parking adjacent to the fueling facility and minor grading and utility work associated with the expansion. Pursuant to the Pre -Application Meeting on May 5, 2013, a SEPA Checklist and utility availability letters are not applicable to this project. As specified on the Public Notice Sign Specifications, we will provide payment to FastSigns Tukwila once a file number has been issued for our project. A Geotechnical Report will be provided with the Building Permit submittal. The following items are enclosed for your Design Review: 1. One (1) completed Application Checklist 2. Five (5) copies of the Signed Application Form 3. One (1) set of reduced Plans (11" x 17") 4. One (1) check issued by Costco Wholesale in the amount of $5,617, payable to the City of Tukwila. Fees include Design Review ($3,817) and Traffic Concurrency Certificate Application ($1,800). 5. One (1) signed and notarized Affidavit of Ownership 6. One (1) mailing label list 7. One (1) Parcel Radius Map 8. One (1) signed Traffic Concurrency Certificate Application 9. One (1) Project Narrative and Design Review Justification 10. Two (2) copies of the Geotechnical Engineering Letter Report, dated November 12, 2008 18215 72ND AVENUE SOUTH KENT, WA 98032 (425) 251-6222 (425) 251-8782 FAX BRANCH OFFICES • OLYMPIA, WA ♦ CONCORD, CA ♦ TEMECULA, CA www.barghausen.com Minnie Dhaliwal, Planning Supervisor City of Tukwila Community Development -2- July 15, 2013 11. Two (2) copies of the Supplemental Geotechnical Recommendations, dated July 5, 2013 12. One (1) Material Board 13. One (1) Photo Montage 14. Five (5) copies of the ALTA/ACSM Land Title Survey (24" x 36") prepared by Barghausen Consulting Engineers, Inc., dated June 28, 2013 (including Sensitive Areas) 15. Five (5) copies of the following drawings (24" x 36") prepared by MulvannyG2 Architecture, dated June 28, 2013 and July 11, 2013 a. Cover Sheet b. Demolition Site Plan c. Proposed Site Plan d. Existing Site Plan e. Proposed Enlarged Site Plan f. Proposed Elevations g. Colored Proposed Elevations (including proposed signage with sign designs and locations) h. Site Photometry Plan prepared by T.E., Inc., dated June 2013 16. Five (5) copies of the Landscape Plan (24" x 36") prepared by Barghausen Consulting Engineers, Inc., dated May 20, 2013. 17. Five (5) copies of the Conceptual Grading and Drainage Exhibit (24" x 36") prepared by Barghausen Consulting Engineers, Inc., dated July 15, 2013. Please complete your review as soon as possible. Please contact me (425) 251-6222 if you have any questions or comments. Thank you for your review of this application. Respectfully, Matt Cyr, LEED AP Project Planner MC/kb 7880c.013.doc enc: As Noted cc: Mr. David H Rogers, Costco Wholesale Mr. Stephen Bullock, MulvannyG2 Architecture (w/enc) Mr. Jay S. Grubb, Barghausen Consulting Engineers, Inc. Mr. John Ellingsen, Barghausen Consulting Engineers, Inc. Mr. Chris Tebaldi, Barghausen Consulting Engineers, Inc. STATE OF WASHINGTON CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431-3670 FAX: (206) 431-3665 E-mail: planning@TukwilaWA.gov AFFIDAVIT OF OWNERSHIP AND HOLD HARMLESS PERMISSION TO ENTER PROPERTY RECEIVED JUL' 16 2013 • COMM1NI 1 r DI-VELOPMEN U ss COUNTY OF KING The undersigned being duly sworn and upon oath states as follows: 1. I am the current owner of the property which is the subject of this application. 2. All statements contained in the applications have been prepared by me or my agents and are true and correct to the best of my knowledge. 3. The application is being submitted with my knowledge and consent. 4. Owner grants the City, its employees, agents, engineers, contractors or other representatives the right to enter upon Owner's real property, located at 451 Costco Drive, Tukwila, WA 98188 for the purpose of application review, for the limited time necessary to complete that purpose. 5. Owner agrees to hold the City harmless for any loss or damage to persons or property occurring on the private property during the City's entry upon the property, unless the loss or damage is the result of the sole negligence of the City. 6. Non -responsiveness to a City information request for ninety (90) or more days, shall be cause to cancel the application(s) without refund of fees. EXECUTED at Issaquah WA v (Are 2 13 (city), (state), , on , 20 s i7 vi4 H o jr 999 Lake Drive Issaquah, WA 98027 (Print Name) (Address) (425) i — F/C1c' (Phone Number) ((Signature)' On this day personally appeared before me Q "� f j d 'J to me known to be the individual who executed the foregoing instrument and acknowledged that he/she signed t e s me as his/her voluntary act and deed for the uses and purposes mentioned therein. ,+ SUBSCRIBED AND SWORN TO BEFORE ME ON THIS (2117.1-1 DAY OFLV>L ! , 20 Z JENNIFER J. SPADAFORA NOTARY PUBLIC STATE OF WASHINGTON COMMISSION EXPIRES NOVEMBER 19. 2013 NOTA8 Porte of.p hi residing at �,La (,(� My Commission expires on H:\Land Use Applications in PDF\Design Review -Public Hearing-Jan201 I.doc /1 -/o -Q-41 COMPLETE APPLICATION CHECKLIST Pay one su The materials listed below must be submitted with your application unless specifically waived in writing by the Public Works Department and the Department of Community Development. Please contact each Department if you feel that certain items are not applicable to your project and should be waived, or should be submitted at a later date for use at the public hearing (e.g. colored renderings). Application review will not begin until it is determined to be complete. ADDITIONAL MATERIALS MAY BE REQUIRED. The initial application materials allow project review to begin and vest the applicant's rights. However, theRiEy mD additional information as needed to establish consistency with development standards. City staff are available to answer questions about application materials at 206-431-3670 (Department of Community 2013 Development) and 206-433-0179 (Department of Public Works). COMMUNl1-Y DEVELOPMENT Check items submitted with application Information Required. May be waived in unusual cases, upon approval of both Public Works and Planning APPLICATION MATERIALS: - ✓ 1. Application Checklist (1 copy) indicating items submitted with application. _ ✓ 2. Completed Application Form and drawings (5 copies). - ✓ 3. One set of all plans reduced to 8 1/2" x 11" or 11" x 17". 1 4. Application Fee: See Land Use Fee Schedule. _ ✓ 5. Completed and notarized Affidavit of Ownership and Hold Harmless Permission to Enter Property (1 copy attached). N/A 6. SEPA Environmental Checklist if required (see SEPA Application Packet). PUBLIC NOTICE MATERIALS: ment e [flitted 7. Payment of a $365 notice board fee to FastSigns Tukwila OR provide a 4' x 4' public notice board on site within 14 days of the Department determining that a complete application has been received (see Public Notice Sign Specifications Handout). ✓ 8. Pay the fee as established by the Land Use Fee Schedule for generating mailing labels; OR provide an excel spreadsheet of mailing labels for all property owners and tenants (residents and businesses) within 500 feet of the subject property. Each unit in multiple family buildings e.g. apartments, condos, trailer parks --must be included. Once your project is assigned to a planner, you will be required to provide an electronic copy of the mailing label spreadsheet in the following format: Name, Street Address, City St Zip, with each of these fields as an individual column: Name Street Address City, St, Zip Mr. Smith 1234 Park Ave S Tukwila WA 98188 PLEASE NOTE: Regardless of whether you pay the City to generate the mailing labels or you provide them, there is an additional fee for postage and material as listed under Public Notice Mailing Fee on the Land Use Fee Schedule. Payment of this fee is due prior to issuance of the decision and you will receive a separate bill for this fee. ✓ i- 9. If providing own labels, include King County Assessor's map(s) which shows the location of each property within 500 ft. of the subject lot. neu2.1D cfi e(eafrifi1ic ropy c sfiriaa0sk¢1,r H:U.and Usc Applications in PDF\Dcsign Rcvicw-Public Hcaring-Jan2011.doc Check items submitted with application Information Required. May be waived in unusual cases, upon approval of both Public Works and Planning PROJECT DESCRIPTION AND ANALYSIS: 010. of i Concurrency test notices for water, sewer, surface water and s less the project is exempt from SEPA (see SEPA Application Packet). N /A 11. Sewer and water availability letters are required from the provider district if additional plumbing fixtures are proposed and the area is not serviced by the City of Tukwila. Forms are available at the DCD office. 12. A written discussion of project consistency with decision criteria, see application. This is your opportunity to highlight the design features of your project. / ✓ 13. Provide two copies of sensitive area studies such as wetland or geotechnical reports if needed per Tukwila's Sensitive Areas Ordinance (TMC 18.45). See Geotechnical Report Guidelines and Sensitive Area Special Study Guidelines for additional information. SURVEY: / 1 14. (a) The survey must include a graphic scale and north arrow. It shall be drawn with black ink in record of survey format. This shall be stamped by the surveyor. (b) An existing and proposed boundary and topographic survey (2 ft. contours including a minimum 20 ft. beyond the property line) with all structures, easements, encumbrances and right-of-way width. Vertical datum NAVD 1988 and horizontal datum NAD 83/91. Conversion calculations to NGVD 1929, if in a flood zone or flood -prone area. (c) Existing and proposed building footprints. (d) Fire access lanes and turn-arounds per Fire Department standards. (e) Dash in required setback distances from all parcel lot lines. SITE PLAN: ✓ 15. (a) The site plan must include a graphic scale, north arrow and project name. Maximum size 24" x 36". (b) Existing and proposed building footprints. (c) Vicinity Map with site location, does not have to be to scale. (d) Fire access lanes and turn-arounds per Fire Department standards. (e) Parking lots with dimensioned stalls and drive aisles. (f) Loading and service areas. (g) Fences, rockeries and retaining walls with called out colors, height and materials. (h) Street furniture such as benches and bike racks. (i) Pedestrian connections between the building entrance(s) and the sidewalk/public street. (j) In MDR and HDR zones provide a development coverage calculation (maximum 50%). LANDSCAPE PLAN: 1 16. (a) Landscape planting plan that meets the standards at TMC 18.52 by a Washington State licensed landscape architect. One set of all plans and analyses shall have an original Washington State registered Landscape Architect stamp and signature. Plans must include the type, quantity, spacing and location of all plantings. Maximum size 24" x 36". (b) Show all existing trees to be retained and any tree protection measures required (for example fencing at drip line). H:\Land Use Applications in PDF\Design Review -Public Hearing-Jan2011.doc Check items submitted with application Information Required. May be waived in unusual cases, upon approval of both Public Works and Planning SENSITIVE AREAS PLAN: N/A, see survey 17. (a) Location of all sensitive areas (e.g. streams, wetlands, slopes over 15%, coal mine areas and important geological and archaeological sites). For stream frontage provide existing and proposed top of stream bank, stream bank toe, stream mean high water mark, and base flood elevation (i.e., 100 yr. flood). Maximum size 24" x 36". (b) Location of all required sensitive area buffers, setbacks tracts and protection measures. (c) Show all significant trees (4" or more in diameter measured 4.5 feet above grade), indicating those to be retained and those to be removed. A tree permit will be required for removal of any significant trees within a sensitive area or its buffer. (d) Existing and proposed building footprints. CIVIL PLANS: ✓ 18. (a) One set of all civil plans and analyses shall be stamped, signed and dated by a licensed professional engineer. Include a graphic scale and north arrow. Maximum size 24" x 36". (b) Vertical datum NAVD 1988 and horizontal datum NAD 83/91. Conversion calculations to NGVD 1929, if in a flood zone or flood -prone area. See hipt for further information. (c) Existing (dashed) and proposed (solid) topography at 2' intervals. (d) Total expected cut and fill. (e) Existing and proposed utility easements and improvements, on site and in street (water, sewer, power, natural gas, telephone, cable). Schematic designs to be provided regardless of purveyor (e.g. site line size, location, and size of public main). No capacity cafes, invert depth, valve locations or the like are needed. (f) Storm drainage design at least 90% complete, which meets the King County Surface Water Design Manual (KCSWDM). Include a Technical Information Report (TIR) including feasibility analysis if required by the Manual. Call out total existing and proposed impervious surface in square feet. Include all storm drainage conveyance systems, water quality features, detention structures, maintenance access and safety features. For additional guidance contact Public Works or go to littp://www.tulcwilawa.gov/pubwks/pwpermit. html. (g) Locate the nearest existing hydrant and all proposed hydrants. (h) Show the 100 yr. flood plain boundary and elevation as shown on FEMA maps. (i) Plan, profile and cross-section for any right-of-way improvements. (j) Show planned access to buildings, driveways, fire access lanes and turn-arounds. OTHER: ✓ 19. Dimensioned and scalable building elevations with keyed colors and materials. Show mechanical equipment and/or any proposed screening. V 20. Color and materials board accurately representing the proposed project. / ✓ 21. A rendering or photo montage showing the project in context is recommended. If submitted it must accurately show the project and be from a realistic perspective (5 to 6 feet above the sidewalk). ✓ 22. Luminaire plan including location and type of street and site lighting. Include proposed fixture cut sheets, site light levels (foot-candles), and measures to shield adjacent properties from glare. /- 1/ 23. All existing and proposed signage with sign designs and locations. See elevations H:Uand Use Applications in PDF1Design Review -Public Hearing-Jan2011.doc CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431-3670 FAX: (206) 431-3665 E-mail: planniueUukwilaWA.gov DESIGN REVIEW - PUBLIC HEARING APPLICATION FOR STAFF USE ONLY Permits Plus Type: P -DR Planner: Gi l fs l P 0,i File Number: I_ / 3 -- 0 ? g' Application Complete Date: 7/zo, l247 /3 Project File Number: pi, i 3 -D 3 Application Incomplete Date: Other File Numbers: f 2F 1-3 -,01 NAME OF PROJECT/DEVELOPMENT: Tukwila Costco Fueling Facility Expansion LOCATION OF PROJECT/DEVELOPMENT: Give street address or, if vacant, indicate lot(s), block and subdivision, access street, and nearest intersection. 451 Costco Drive, Tukwila, WA 98188 LIST ALL TAX LOT NUMBERS (this information may be found on your tax statement). 3623049107 DEVELOPMENT COORDINATOR: The individual who: • has decision making authority on behalf of the owner/applicant in meetings with City staff, • has full responsibility for identifying and satisfying all relevant and sometimes overlapping development standards, and • is the primary contact with the City to whom all notices and reports will be sent. Name: Address: Phone: E-mail: Barghausen Consulting Engineers, Inc. (John Ellingsen) 18215 72nd Avenue South, Kent, WA 98032 (425) 251-6222 1 sen@bar hausen.com FAX: (425) 251-8782 Signature: H:\Land Use Applications in PDF\Design Review -Public Hearing-Jan2011.doc Date: 1•z• 13 RECEIVED 1 PROJECT DIRECTORY OWNER COSTCO WHOLESALE 999 LAKE DRIVE ISSAQUAH, WA 98027 t: 425.313.8100 CONTACT: DAVID ROGERS ARCHITECT MULVANNYG2 ARCHITECTURE 1110 112TH AVE NE, SUITE 500 BELLEVUE, WA 98004 t 425.463.2000 f: 425.463.2002 CONTACT: ED GALLIWAY CIVIL ENGINEER / SURVEYOR / LANDSCAPE BARGHAUSEN CONSULTING ENGINEERS, INC. 18215 72nd AVENUE S KENT, WA 98032 t: 425.251.6222 f: 425.251.8782 CONTACT: AMBER KELLY Ccosirco W OLESALE GREEN INK PACKAGE TUKWILA, WA VERTICAL ISLAND FUEL FACILITY EXPANSION C • rxo4ar Y : :•:q I TUKWILA. WA ' • pe ` ro • Cantel, Dr AREA OF WORK COSTCO WHOLESALE TUKWILA, WASHINGTON VICINITY MAP PROJECT DATA CLIENT: COSTCO WHOLESALE 999 LAKE DRIVE ISSAQUAH, WA 98027 PROJECT ADDRESS: 451 COSTCO DRIVE TUKWILA, WA 98188 SITE AREA: BOUNDARIES INFORMATION: t 4.28 ACRES (186,231 S.F.) THIS PLAN HAS BEEN PREPARED PER SURVEY BY BARGHAUSEN ENGINEERS DATED 12.04.04. SCOPE OF WORK A (3) DISPENSER FUEL FACILITY EXPANSION TO AN EXSTING (8) DISPENSER FUEL FACILITY, WITH ASSOCIATED SITE IMPROVEMENTS. SITE IMPROVEMENTS TO INCLUDE ASSOCIATED CURBING, PAVING, AND STRIPING. SHEET INDEX TS 101 COVER SHEET C1 CONCEPTUAL GRADING AND DRAINAGE EXHIBIT PP 11-04 DEMOLITION SITE PLAN PP 12-04 PROPOSED SITE PLAN EX 11-04 EXISTING SITE PLAN PP 13-04 PROPOSED ENLARGED SITE PLAN PP 31-04 PROPOSED ELEVATIONS PP 32-04 COLORED PROPOSED ELEVATIONS SE -1 ELECTRICAL SITE PLAN OVERALL SITE PLAN JUNE 26, 2013 RECEIVED ers tb 3 .5 COSn70 TUKWILA, WA #006 451 COSTCO DRIVE TUKWILA, WA 98188 _I rLU LYL N_NY_G2 1110112TH AVE. NE 1 SUITE 500 BELLEVUE. WA 1 06004 t 425.483.2000 1 /425.483.2002 MulvennyG2.com 93-0440-28 JUNE 26, 2013 OVERALL SITE PLAN TS101 15' SIDE YARD B.S.B.L. CITY OF TUKWILA CONCEPTUAL GRADING AND DRAINAGE EXHIBIT r-20' 0 10 20 40 • GREASE TRAP 561 f•Vr 3MH I I I I MATCH El. ,, 1 I why A$P9MLT 1 PAVEMENT 1 • RELOCATE UDR • TO NEW =rte . b 67'.1ROOF MATCH EX. DRAM DORMER" NEW ASPHALT PAVEMENT MATCH EX. MA HEX. I Ln al REMOVE EX. ova CONTRACTOR TO RELOCATE EX. A00)11VE TAW VENT 'w 11 —/ ) ZUNI ---- --Jr� U3 -o38' COSTCO SITE ANDOVER PARK T SOUTHCENTER PKWY NOT TO SCALE jp 1' TvALL EY HIGHWAY 4f �IYE'R .........FY VICINITY MAP NTS APPROX. GRADING QUANTITIES CUE . 200 CY F0.I. . 100 CY EXPORT . 100 CY VERTICAL DATUM NAD 86 FLOOD INFORMATION 8 2 DESIGNATION OF THE FLOOD ZONE IS Y' ANO DETERMINED TO DE OUT5XIE OF 500 YEAR FLOOD PLAN ACCORDING TO FEW F1.000 INSURANCE FATE MAP NUMBER 53033C0978 F. COMMUNITY NUMBER 530099 (COY OF TUKWILA PANEL NUMBER 979, SUFFIX F, EFTECTNE MAY 16. 1995, 914G COUNTY, WASHINGTON. THIS DATA IS REAFFIRMED BY FIRM MAPS NOT YET ADOPTED BUT PUBLISHED BY XNG COUNTY ROOD SERVICES ANO RETRIEVED FROU THEN WEBSITE ON DECEMBER 15, 2090. Know what's below. CaII before you dig. Dial 811 N 8 LRLl11' COIRL"T r10TEJ THE CONTRACTOR SOUL BE RESPONSIBLE FOR VERIFYING THE LOCA110N. DIMENSION. ANO DEPTH OF ALL EXISTING UTILITIES WHETHER SHOWN ON THESE PANS 0R NOT BY P011RXNG THE UTILITIES AND SURVEYING THE HORIZONTAL AND VERTICAL LOCATION PRIOR TO CONSTRUCTION. IMS SHALL NCLUOE CALLNG UTILITY LOCATE 0 611 AND THEN POTHOLING ALL OF THE EXISTING UTILITIES AT LDCADONS OF NEW UTILITY CROSSINGS TO P TSICALLY VER9Y WHETHER OR NOT CONFUCTS EXIST. LOCATIONS OF SAID UTILITIES AS SHOWN ON THESE PLANS ARE BASED UPON THE UNVERSED PUBLIC NFORW1gN AND ARE SUBJECT TO 9A9M716. 10 COFIFUCTS SHOULD OCCUR THE CONTRACTOR SHALL N0T9Y BARCLNUSEI CONSULT= ENGINEERS. INC. TO RESOLVE ALL PROBLEMS PRIOR "ID FROCEEDI 40 YIITH CONSTRUCTION. 7/15/2013 3:55 P11 Scalc a —i 3 LL rc ter. z \O COSTCO WHOLESALE TUKWILA, WA �I 1 SATE 150 COSTIVE ■■ MINI 11EMI 0 EXISTING REGIONAL OPTICAL FACILITY 441 COSTCO DRIVE EXISTING HYORAMT Ir E lip --------- 41 0_�1r7 �° 1 N 11 1 I 1 n k 1 1 1 B--',1 1 0 1( tJ 1 I I a DEMOLISH DEMOLISH SITE CURB AND PAINT AS SHOWN SITE POLE AND VINT STACK TO BE RECACATED II I ll D II 4 1 OEMOUSH SITE POLES AS SHDYYN as -o crt "2".. 1 1 DEMOLITION SITE PLAN G/3 -038' JUNE 26, 2013 w w w U w rr 0 4' 0' 10 37 IMEIRWHOLESALE TUKWILA, WA #006 451 COSTCO DRIVE TUKWILA, WA 98188 •1Mry61M� .c NOON NOM. imam r��+rd eft roam bmampa YIirsee.N 1110112TH AVE NE 1 SUITE 500 BEILEVUE. WA 190004 1425.4032000 1 T 425.403.2002 movnm 2..mm 93-044-28 JUNE 26, 2013 DEMOLITION SITE PLAN PP 11-04 M U_LVANNY.JG.2 PERMANENT S Y1NE,OGWL NON.EXCLUSPJE F •'IFIETNT' 54' LA0LIAEN1 TO0ICN.K) 1ABWAIbAE ET PAO, PACIFIC RAIL/NW/CO — —1ma - 0.00.mm as so _J M 1 r 111 1:1112,E5 1 1 1 11 1 1 11_ I E'.tST1IG //O A TPAIi3FLPMER/'� ENTRANCE EXISTING SUITE 150 FOOD FMN 8010IW v—� E 4191 i1RE INSTMLAI RECEIVING 0000000 olll Ib H FRE NT9iWR W. WATER VANE W+ GUAROP06T9 0031141 yO4+PAGTOR 0104TRp fA11 ER 1 EXISTING 900ENM DOM 7 / P dISTCOT RIVE E<16111C• 1TORAN, 101 PUBLIC a ACCEIS i Ti T ini EXISTING DRAN1 ti 1 1 }004ANICAI4]N� CONDUITS FCC GAS STATION 125-T+ 1 EXISTING REGIONAL OPTICAL FACILITY 441 COSTCO DRIVE 114 I" — EMI —.——r EY RY1G 40.0.CONTPOU.ER EN-LGEGRE IBp�If I ii/ii 111111 it 1 U ---J I //J COSTCO WHOLESALE e TUKWILA, WA .9 PROJECT DATA CUENT: OOSTGO MINOLESALE 999 LAKE DRIVE ISSAQUAH, WA 98027 400 COSTCO DRIVE TUKWILA, WA 98188 WAREHOUSE SITE AREA: 13.93 ACRES (608,591 S.F.) OPTICAL SDE AREA: 4.28 ACRES (188232 S.F.) TOTAL SITE AREA: 18.21 ACRES (792.12] S.F.) BOUNDARIES THIS PLAN HAS BEEN INFORMATION: PREPARED BY USING BARGHAUSEN CIVIL DWG DATED 13.2499. PROJECT ADDRESS: EXISTING BUILDING DATA (WAREHOUSE): EXISTING BUILDING AREA EXISTING TIRE INSTALLATION EXISTING BALER ROOM EXISTING TOTAL BUILDING 206,910 S.F. 2.453 S.F. 2,903 S.F. 212,266 S.F. EXISTING PARKING DATA (WAREHOUSE): Q IT WIDE STALLS 502 STALLS (9' WIDE STALLS 885TALLS HANDICAP STALLS 12 STALLS EXISTING TOTAL PARKING (WHSE) 602 STALLS NO. OF STALLS PER 1000 S.F. OF BUILDING AREA (212,266 SF): 2.84 STALLS NO. OF STALLS REQUIRED 8Y JURISDICTION (2.5 STALLS 11000 S.F.): 531 STALLS PROPOSED PARKING DATA (WAREHOUSE): TOTAL PARKING (NO CHANGE) 602 STALLS EXISTING BUILDING DATA (OPTICAL): EXISTING OPTICAL FACILLTV 34.544 S.F. EXISTING PARKING DATA (OPTICAL): © 10' WOE STALLS a: WIDE STALLS HANDICAP STALLS EXISTING TOTAL PARKING (OPTICAL) NO. OF STALLS PER 1000 S.F. OF BUILDING AREA (34,544 SF): NO.09 STALLS REQUIRED BY JURISDICTION (1.0 STALLS 11000 S.F.): 11 STALLS 151 STALLS 4 STALLS 166 STALLS 4.81 STALLS 35 STALLS PROPOSED PARKING DATA (OPTICAL): Q IT WOE STALLS 0 WIDE STALLS HANDICAP STALLS PROPOSED TOTAL PARKING 13 STALLS 147 STALLS 4 STALLS 164 STALLS NO. OF STALLS PER 1000 S.F. OF BUILDING AREA (34.544 SF): 4.63 STALLS JURISDICTION REOUIRED PARKING PROPOSED PARKING EXTRA PARKING AVAILIBLE FOR WHSE 35 STALLS 164 STALLS 129 STALLS PROPOSED TOTAL PARKING (OVERALL) 788 STALL'S TOTAL REQUIRED BY JURISDICTION 566 STALLS NO. OF STALLS PER 1000 S.F. OF BUILDING AREA (246.6105F): .3.10 STALLS NOTES: EXISTING CONDITIONS TO BE FIELD VERIFIED. VICINITY MAP' TUKWILA PKWY 0.. :L LLI D_ z W 0 0 O D Q 0 cn cc W 0 0 z SAXON DR. S. 180TH PROPOSED SITE PLAN [./3 'd3 JULY 11, 2013 0 117 20 40 80 IIIMEWINICALESALE TUKWILA, WA #006 451 COSTCO DRIVE TUKWILA, WA 98188 • 1400061! 0.000000.011,110 mon.. Me pa 0 012. 020000.1may 0400,144n 0knew nw,..0 Penn vow. tea.Ml@ A..vA 1110 112TH AVE. NE 1 SUITE 500 BELLEVUE, WA 1 98004 1425.463.2000 11425.4632002 MUNWNRy02.e n 93-044-28 JULY 11,2013 PROPOSED SITE PLAN PP 12-04 cosaO SURE 150 --S � I - Z 1 11llIIIIIIJ1II IUIIIIIIIIIIIfie O COSTCOTAIVE 0 EXISTING REGIONAL OPTICAL FACILITY 441 COSTCO DRIVE 0-0 DEMOLISH SITE CURB AND PANT A5 SHOWN - COMMUNICATION CDNOUTS FOR GAS STATION S TE POLE AND VENT STACK TO BE REOLCATE0 0 b ❑-C-❑ E7051NO63? DEMOLISH SITE CONTI:Ma POLES AS SHOWN ENDL06U1E ❑ c COSTCO WHOLESALE TUKWILA, WA I) m 73\** rn \1\11 ' 1 ' 1 \se . EXISTING SITE PLAN L /3 JUNE 26, 2013 0 4' B' 16' 32 COSMO IIIMIEWHOLIBSALE TUKWILA, WA #006 451 COSTCO DRIVE TUKWILA, WA98188 �...�rd�lr..F �0wsa.nem.N- 1110112TH AVE. NE 1 SUITE 500 BELLEVUE, WA 1 90004 1425.463.2000 1 (425.463.2002 MUNa n y02.00m 93-044-28 JUNE 26, 2013 EXISTING ENLARGED SITE PLAN EX 1 1 -04 SUITE 150 1 1uum i !lima O EXISTING REGIONAL OPTICAL FACILITY 441 COSTCO DRIVE EXISTING HYDRANT COSTCIVE O ■■—■■L1,14:1=■■�■ St: ❑-0 RELOCATED EXISTING APoO PER►&ATOR L_ T � C OOMMUNIOAT)oN CONDUITS FOR GAS STATION 125.r T ■ S1 b b EXISTING 13101 CONTROLLER ENCLOSURE RELOCATE) VENT STACK Mill COSTCO WHOLESALE L _ T1J1<WN1 LA, VWLP_ NI 4/303$ ENLARGED SITE PLAN c. LU CC 0 4' 9 10 32 MMOLESALE TUKWILA, WA #006 451 COSTCO DRIVE TUKWILA, WA 98188 NA el Eft le novolzell an. isle • 1,, �...r r..r..�: rw r r...sv re..u.. 1110 112TH AVE. NE 1 SUITE 500 BELLEVUE, WA 1 98004 1425.483.2000 1 1426.483.2002 MuhamyG2wm' 93-044-28 JULY 11, 2013 PROPOSED ENLARGED SITE PLAN PP 13-04 JULC_1Jt2QL3 8 z 4 z a 2 IMO" CANOPY FASCIALIGHT FIXTURE, 1410E FASCIA' FIXTURE (90C 4TYP) H I�[ a L J 1' E—PoicoGASOLINE LIGHT AND SON NOIINT ON CANOPY FASCIA 6Y CANOPY SUPPLIED, CENTER ON NORTH, WEST. 90J17t 770 EAST SIDES OF CANOPY FASCIA (SIO 4 TIP) INSTALL CANOPY F4502123M FIXTURE, NIDE FASCIA' FIXTURE (SCC 4 TYP) 08/03 SH EXISTING CANOPY =NAGE AND SIGN LIGHTING (2 TIP) OWEST ELEVATION (EAST ELEVATION SIM.) SCALE: 1/4' = 1'-0' ENTRANCE SIDE rNSTAIL CANOPY FASCIA LIGHT FIXTURE VIDE FASCIA. FERIAE (SOIL 4 TYP) 0040 / NAY EXISTING 3740 °MUSH Oa4TNG SIGN UGHTWG NOASSOCIATED SON / f 9E' yr 94Y 14'-0' 9-0' ` 120' Mor 1742 3747 372 12.0*1 1 i 1 H I�[ a L J 1' E—PoicoGASOLINE LIGHT AND SON NOIINT ON CANOPY FASCIA 6Y CANOPY SUPPLIED, CENTER ON NORTH, WEST. 90J17t 770 EAST SIDES OF CANOPY FASCIA (SIO 4 TIP) INSTALL CANOPY F4502123M FIXTURE, NIDE FASCIA' FIXTURE (SCC 4 TYP) 08/03 SH EXISTING CANOPY =NAGE AND SIGN LIGHTING (2 TIP) OWEST ELEVATION (EAST ELEVATION SIM.) SCALE: 1/4' = 1'-0' ENTRANCE SIDE rNSTAIL CANOPY FASCIA LIGHT FIXTURE VIDE FASCIA. FERIAE (SOIL 4 TYP) 0040 / NAY EXISTING 3740 °MUSH Oa4TNG SIGN UGHTWG NOASSOCIATED SON / f 9E' yr 94Y 14'-0' 9-0' ` ' NEW DISPENSER I � III III `FASO& IETAL PANELS COLORS - 2//42 70 GREY - I PC-109477-Slr CR WTC14 EXISTING PANEL COLORS ELVR STEEL TUBE YAWED N CW. COLOR TO WATCH EXISTING. WNAL I 1 MATERIAL ROSE wow EQsrico,GAJOLINE EXR SIDE OSOUTH ELEVATION 6 SCALE: 1/4' -0' SID INSTALL CANOPY FASCIA LIDIR AMORE. • 14'47 94f __.___.._.. _._.__._AAAA, 70.0 eV MN 077407001074. MI 1 I , NM ME N CENTER ON CANOPY 1.01FASCIAL 1.1 111111 M METAL PANELS TO MATCH EXISTING PANELCCIORS-'ANSI 70 GREY-IPC-10687-S1r i I 1 I ] I NEW DISPENSER Mill101.OMi . 1M1M+) = J I 111111 I -I ril A. t M MI NM alT 1 J NORTH ELEVATION SCALE: 1/4' = 1'-0• ENTRANCE SIDE Ark Ark 1.9325 SF 15706 SF 1;919 SF 070187 10515 SF 1.5703 SF TOTAL SP. • 1139 SF LEITERSI LINES ONLY • 19.10 SF AREA M/S SF 2332 SF 2052 SF SA SF 2913 SF 2V2 SF .70795F 2325E .1224 SF 29315E .1593 SF 7.5310 'GASOLINE' ANO rn STRIPS UPS LAME 0971906 (BLUE) OCANOPY SIGN 14 SCALE: 1/2 =1'-O 1212 COSTCO WHOLESALE L/3aZr PROPOSED ELEVATION TUKWILA, WA JUNE 26, 2013 0 4' 8' 18' 32 Cosmo IMERWIFICILESALI TUKWILA, WA #006 451 COSTCO DRIVE TUKWILA, WA 98188 r a• rrrn—wiry w• •••.•11.02 AMr• 1110112TH AVE. NE 1 SUITE 52) BELLEVUE, WA 1 99004 L 425.4832000 1 1425.4832002 MWnnYG2.mm 93-044-28 JUNE 26, 2013 PROPOSED ELEVATION PP 31-04 0 A ti 3 1 0 9 8 3 2 4 m 2 120.0' 37.0' 872 17J2 2047' RAL2(GR011Il1F9RFGR131540 1742 37- 37.0' 1715 WSTALLCANOPY FASCIA USW FIXTURE VICE FASCIA' FIXTURE (SCIC 4 TYW) 2OWEST ELEVATION (EAST ELEVATION SIM. SCALE: 1/4' = 1'-0' L SOUTH ELEVATION SCALE: 1/4' = 1'-0' INSTALL CANOPY FASQA LIGHT FIXTURE. ONORTH ELEVATION 1 1 SCALE: 1/4' = 1-0' COSTCO WHOLESALE L/3-oSt 1.6305 SF 1.5706 SF 1.1510 SF SIOI SF 1.03I5 5F 1370E SF TOTAL SF: • 1155 SF LETTERS ILl1ES OILY • 19.70 SF AREA .6449 SF .260 SF .2052 SF 5935 SF 2013 SF 2831SF 15019 SF 2332 SF .1214 SF 2531 SF' .1553 SF O14 CANOPY SIGN SCALE: 1n' = 1'-0' 1212 PROPOSED ELEVATION TUKWILA, WA JUNE 26, 2013 0 4' S 17 37 WHOLESALE TUKWILA, WA #006 400 COSTCO DRIVE TUKWILA, WA 98188 M_U_LVAN • ...+.4-.-ti..•••412 +.�.. 1110117TH AVE NE 1 SUITE 500 BEU.EVUE. WA 1 90004 1425.4632000 1 1425.463.2002 MMrnsG2.00m 93-044-28 JUNE 26, 2013 PROPOSED ELEVATION P32-04 SAXON DRIVE ,l '"I.1 '74, .9 1.2 T.0Vie; 3 4.? 9.4 D.6 1. �. _. E4..,.5-.P�''J97">$1P'5.3z 29 1�6\ I -, r_ab.�Lr I 1 1 =.1 1.5 9.T 7i 6 D.5 jsiF`�I4��-} 3._5_� 21'__ct&• S3'•�7 4' 1i tA\ 4�I 57'P1 M▪ S▪ C ACCESS EXISTING REGIONAL OPTICAL FACILITY "al:© nAiuPQ"5_f D.8 9.4 NEW CANOPY LOMS;'TP OF 6 1.� 1: D.9 ..D,7 D.9 -1451 .COSTCO 1^ IDRIVE 1 6 rs• p, to , i ; 13.2 -D.1 17 441 COSTCO DRIVE A .3 1.6 1.3 '16 D2 D3 2.1 "12 D,8 '3 5 '.45.3. O 0 '114 ..0 5.9 7y9 7 112. '14.2 .7 1 9 1.1 40 1.2 1.1 1.7 2.3 1.5 1.4 1.6 25 77 16 D.9 8.8 9 5.5 \12 8.4 11, IIIII� f SITE PLAN BCAUt 40' - T -O' 1CHAMFER FLASH GRADE 2•-0' ON. N01E ?ROME CONCRETE J -BOX AS REQUIRED. NTS DEMI. IS FOR ELECTRICAL COl0UT1S ROUTING ONLY. SEE STRUCTURAL DRAWINGS FOR CONSTRUCTION DETAIL POLE BASE DETAIL ENO SCAB FUEL FACILITY - DROP LENS ENCORE (GA) SITE PLAN NOTES: QI EC. TO REMOVE 0451NG POLE, BASE AND FORNRE 44(0800 HEAVY DUTY TRAFFIC RATED 4 -BOX AT COSTING POLE LDCATON, EXTEND E1051MD FEEDER TO MANTAS CONTINUITY AND REPULL WIRE AS REQUIRED. Q EC. TO REMOVE /NO DISPOSE OF EXISTING 1 -HEAD POLE EC. TO RELO+E AND RELOCATE EXISTING 2 HEAD POLE TO 01.0 1 NEM POLE LOCATION. 00401159 COSTING BASE AT 2 -NEM POI, LOCATION. PROVIDE KAY( DUTY TRAFFIC RATED 4 -ROA AT COSTING POLE LDCATON, EXTEND EXISTING FEEDER TO RARTAN CONTINUITY. REPU3. WIRE AS REQUITER REIAMP AND CLEAN 1D80 OF COSTING FIXTURE DESCRIPTION. OCOSTING UGIT POLE. (2) 400 MH FLAT LDS. TYPE 3 06112I13U11011. 20'-0' POLE. will 2'-6' BASE P1 001YS t01 T POLE. 4000 MN FIAT LEN5 (ADJACENT 5ITEj, TYPE 1. 20'-0' POLE POLE w11H 2'-C' 845E OFUEL CANOPY AEA UGIT. ;sow PSIS. DROP LENS ELECTRICAL SITE PLAN g i SE -1 • LIMITED TOPOGRAPHIC SURVEY A PORTION OF THE SOUTHWEST QUARTER OF SECTION 25 AND THE SOUTHEAST QUARTER OF SECTION 26, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. CITY OF TUKWILA, KING COUNTY, WASHINGTON '1 i y CO 0 1S 587E YARD 8.S.8L CITY OF TUKWUA INGRESS/EGRESS EASEMENT REC. N0. 9808130150 DIC 8 Ri 41111111111RV.:ii111111 41.4 00 SIGN sr PK 4' HM =a = / WATER C8 STD GRATE TYPE'I VALVE RAw25.64' LE. S i2' ADS w-23.39' _ 2 DI.. E-23.29' ROOF ORMN ROOF ORAN ROOF 00410 I I I I I 1 i I 1 1 1 1 1 1 1 1 UTLRY VAULTS ' 2Y moss 26 SPACES C8 Sm GRATETYPE•1 ..1 ww2em' — =============== IL E-2380' _ _ -- 12. O1 LE w-23.00' *B2% 55'2T. o4.6op4.6 5.00' FEE HYDRANT w/CWRD POSTS S 88'2215" E 302.95' 1 11ER MILK bA' 5EMACK FROM ONAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 NORTH AMERICAN VERTICAL DATUM OF 1988 -NANO 88 1 1 1 I 11, ‘a 13 iv3 1 1„ . 1 1 1 1 1 1 I I - t 10 20 40 SCALE. r•20' 1 s ii c— z to 0 ?• . 0 w C) w z mwmco 0 0 03 CC N 0 w d O 0 0 Y W Z v • MW 0 M.00)} aw~' m Q = 0 1-• LEG POSER WIT QQ WIDE WALT El .UFR WILT 0-42(UMW 830 10T U00 ORO U00 POKER INTER ALCM% 101 (AOT) 0301 W511 (0) STOAT WARM CW1) AOI41 QFNDIT/ROOF OWN SWIMMY SOCA 10112E (SOH) 9NIVR'I SOYA OFNCUT (433) OAS WWII GLS NUE (GA WIER WY( (94) FIE =MOM FIE U11A00 (EE0 MIER WNW WIER WO (KM) SEM h END • 5UMY MMA N (AS NIXED) -H —50 =TON COM O (AS 110182) SET FEWA/CIP WAKED IS 1 AT CO IR POSTIDI ASPWLT MEESE CA4fL SINDAT SOO UE STONY DRAWL( UNE 001 UN1041 —//— KDOD rocs —«.— 5U EFKE HORIZONTAL DATUM - BASIS OF BEARINGS NAD 83990 THE BEARING OF TIE UNE BETWEEN THE WSDOT POINT ID NUMBERS 136 AND 1384 TAKEN AS SOUTH 44'36'58• EAST, EASED UPON NORTH AMERICAN DATUM OF 1983(91) VERTICAL DATUM - BASIS OF ELEVATIONS PROJECT BENCHMARK KING COUNTY POINT DESIGNATION 3537. TAKEN AS ELEV. • 29.824 FEET D cc U C) W J w Q � Q W = Q 0 a 0 0 I-- w co J 0 0 0 LL 999 LAKE DRIVE 1 N CO CO 91) F II II II E a & 1 ti) 0 lo cooly Xreh: 7880-1I.dwg E 9 i a A CONCEPTUAL LANDSCAPE PLANTING EXHIBIT r-20'-0' 0 10 20 40 7iC I1I111Ii1h ' ii Ililiill J + ._'t;ice -Lew =4110Y =wog It -10 COSTCO Ci) SITE STV, HIGFryy4y ANDOVER PARK T SOUTHHCENTER PKWY a NOT TO SCALE VICINITY MAP NTS L/3Oit LANDSCAPE PLANT MATERIAL- LEGEND SIZE CONONON SrueOL BOTANICAL / 00116I0N 1NYFS SPACING QUANTITY 0 o rem + RISR Rl RD Sl1 T / RED51RSET MAPLE COMM TRE r ryE I e a CHP AS 90%4 10 WON A5 ON SHOW ERSONG TREE S SHRUBS: PROMS11110:10'COIIPICTA' 00' -b' V 0.C. A . COMPACT SIRYFBEARI' ERE 8 HEEEMOdUES MIMS / 100106 1$ 0.C. 22 OILY 0511VIIME DEuwn 00' -SI' AS SHOWN 16 ® DET/MW AS GRAM acro TN30 'DERV° MEW / a' -Y M. 3S 0.C. 7 MOMORTR AFBONITEA ti_.•`.,. MICA %NOR / {' NH Ir 0.C. AS RDD DEARNOR ORSOMG IANDSCPE ANO Po0GATOI COSTING LNDSCPE ANO MIDGOpN 1 STARE 0 GUY ONE CIROIU1f SEASOIC NURSERY CA00N FOR STREET TREE USE 0MNOEO AT NY TO REMAM. SRYE, AND PI0IECT TO BE REMOVED WATCHED HEIGHT AND FM. NULL AND MUM'. MIMED wane WILLOW ROWER. NULL 1N10ED HECHT NO F01M, RUL Me RUSHY. PUI(IFD NOIN 1HE MOND LANDSCAPE 10 FAL M OPEN ARDS ENTOLED NOWT AND FORM, FLU. AND 9094' /CID IT IRON BOIOERS. 9111I95. A10 5915 TO RIMA SME, AND PROTECT TO BE RENDYED Know what's below. CaII before you dig. Dial 811 2 4 9 i wU 3 < 5 z n < U IL 0w U 6o---= v.. Le, ok -9 F RI w O o1 11 U 2 8 R 11 05 STATE OF WASH NGTON REGISTERED? LANDSCAPE ^ROHIT*CT 706 (VAAUD ONLY SIGNAL 5E) OPINES 12/I5/14 I1R1TY O gET K THE COM/CM SHALL BE RESPONSIBLE FOR VERFYNG THE LOCATION. 0I0I90N, AND DEPTH OF ALL DOSENIG UTILITIES %NETHER ova ON THESE P430400644070740100160146 MITES AND SURFING THE HORIZONTN. ANO VERHCAL LOCATION PRIOR TO CONSTRUCTION. THE SHALL IICUOE CALLING MUTT LOCATE O ail AMID THDI POTHOLING ALL OF THE COSTING ununeS AT LOCATIONS OF NEW UIFOY CROSSINGS TO PHYSICALLY VERIFY *NETHER OR NOT CONFLICTS DOST. LOCATIONS OF SND UOUOES AS SHOWN ON THEE PLANS ARE BASED UPON THE UNVERIFIED PUBLIC INFORMATION AND ARE SU9ECT TO VARIATION. IF CONFUCIS SHOW) OCCUR, THE CONTRACTOR SHALL NOTIFY SARGHMUSEN CONSULTING ENGINEERS. NC. TO RESOLVE ALL PROBLEMS PRIOR TO PROCEEDING WITH CONSTRUCTION. 0 W Z VI C4 8 N 1 Z 0 0 N 1 Q N 3 CV CV 0I N u a 10 Y vv J)