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HomeMy WebLinkAboutPermit L93-0017 - WARREN DANA - SEGALE RETAIL CENTER ENVIRONMENTAL IMPACT STATEMENT (EIS)l93-0017 strander boulevard and andover park west Permit L93-0017 - WARREN DANA - SEGALE RETAIL CENTER ENVIRONMENTAL IMPACT STATEMENT (EIS) ENVIRONMENTAL IMPACT STATEMENT John W. Rants, Mayor Department of Community Development Rick Beeler, Director Dana Warren SEGALE BUSINESS PARR P.O. BOX 88050 Tukwila, WA 98138 OCT 0 '11993 RE: ADDENDUM TO SEPA MDS SEGALE RETAIL CENTER FILE # L93 -0017 Dear Mr. Warren: This letter is in response to your request to amend the MDS conditions regarding biofiltration swales and Trek Drive. Based upon the material submitted by you and Public Works' comments, coalesing plate oil /water separators will be used instead of biofiltration swales. Regarding Trek Drive, the condition is amended to read as follows: At the present time there is no right -of -way from Trek Drive located upon the property. The applicant agrees not to construct any building improvements on the south 40 feet of the property. The applicant agrees to construct a 24 foot wide driveway and 6 foot wide sidewalk within the south 30 feet of the property as per the building permit application. Should the City of Tukwila choose to purchase this 30 feet wide right of way in the future, applicant agrees to accept a purchase price (per square foot) equal to the fair market value (per square foot) of the land, not including improvements, immediately north and adjoining the right of way at the time of purchase. If you should have any questions regarding the modification to conditions, please feel free to call. Sincerely, by- Rick Beele DCD Director 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • (206) 431-3670 • Fax (206) 431-3665 . SBGALB BUS/MESS PARK Jack Pace City of Tukwila 6300 Southcenter Boulevard Tukwila, Washington 98188 Re: Addendum to SEPA MDNS Segale Retail Center File Reference # L93 -0017 Dear Mr. Pace, 8/27/93 RECEIVED AUG 2 71393 COMMUNITY DEVELOPMENT As we discussed last week there are modifications to the above referenced SEPA ENVIRONMENTAL IMPACT STATEMENT MDNS2 that necessitate the need for an addendum. Those 4 items are listed as follows: Item #1 Based on agreements with the Department of Public Works the widening of Andover Park West and Strander Blvd is necessary to improve service at that intersection. Do to the fact that this property already has frontal improvements along its entire frontage (with the exception of sidewalk along Strander Blvd) the cost of widening these two streets shall be credited against the traffic mitigation fee to be collected as mitigation for this project. The total value for this credit is to include the costs for design and construction of the following items: 1. New curb, gutter and paving along the South side of Strander boulevard and the East side of Andover Park West. (to replace existing) 2. Side walk along Andover Park West. (to replace existing) 3. Relocation of the necessary utilities, street lights, traffic signals, etc. to facilitate the widening of both Strander Boulevard and Andover Park West. 4. Installation of two 2" conduits for traffic signal interconnect. P.O. BOX 88050 • TELEPHONE: (206) 575 -3200 • FAX: (206) 575 -3207 • TUKWILA, WASHINGTON 98138 9 its•:.•, w• >. s. ,... ma. o I.r:..... u� .�_wmhw..Rh.ur.•rwxwm.nr :nvw... •r The cost to widen the east side of Andover park west north of Strander Blvd shall be done by that property owner as part of its development. The new face of curb for the widening will align with the edge of the existing right of way. The 6" curb and 61 -0" sidewalk will be on an easement so no additional right of way will need to obtained by the city for the widening. Item #2 The above referenced SEPA MDNS wrongly states that the applicant will grant a 60 foot easement. At the present time there is no Right of Way for Trek Drive located upon the property. The applicant agrees not to construct any building improvements on the south 40 feet of the property. The applicant agrees to construct a 24 foot wide driveway and 6 foot wide sidewalk within the south 30 feet of the property as per the building permit application. Should the City of Tukwila choose to purchase this 30 feet wide Right of Way in the future, applicant agrees to accept a purchase price (per square foot) equal to the fair market value (per square foot) of the land, not including improvements, immediately north and adjoining the Right of Way at the time of purchase. The Department of Public Works has reviewed and approved these terms. Item #3 Upon further engineering and design of the parking lot drainage it was determined unfeasible to gravity flow into bio swales as originally proposed. The parking lot drainage has been reengineered to flow through coalescing plate oil /water separators prior to discharge into the storm water system. The Department of Public Works has reviewed and approved this alternative. Very Truly yours, SEGALE BUSINESS PARK VatotWAotow Dana Warren .�...........�.•..- ...... City of Tukwila John W. Rants, Mayor Department of Public Works MEMORANDUM TO: Rick Beeler, Director DCD FROM: Ron Cameron, City Engineer DATE: August 3, 1993 SUBJECT: Segale Retail Drainage Ross A. Earnst, P. E., Director The Segale Retail final design disclosed drainage problems resulting in the request to revise the design as follows: 1. All drainage will flow to Andover and none to Treck. 2. Oil /water separators will be used instead of the swales. The request is attached (July 30 letter). Drainage clearance of the railroad tracks and hydraulic grade line preclude using Treck. Swales along the back edge of the sidewalk result in a "lip" that would be a ped hazard. This infor- mation is more fully described in the four page letter. We have met and reviewed drainage alternatives with Mr. Millard as this problem has evolved. We concur in the request to revise the drainage design from the original design to the new proposal. RMC /kjp Attachment: July 30, 1993 Letter from Dave Millard 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: (206) 433 -0179 • Fax (206) 431-3665 _. July 30, 1993 M.A. SEGALE, INC. GENERAL CONTRACTORS Mr. Ron Cameron, PE City Engineer Public Works Department CITY OF TUKWILA 6200 Southcenter Blvd. Tukwila, Washington 98188 Re: Revised Drainage Analysis - Strander Site Dear Ron: RECEIVED AUG -21993 TUKWiLA PUBLIC WORKS This letter report is submitted in response to your request on July 20, 1993, during a meeting with your Public Works staff, for an updated letter report describing the problems encountered during final design resulting in a drainage system substantially different than envisioned in the pre- design SEPA /Application stage. As shown in the letter report dated May 25, 1993, we initially proposed to direct runoff from the site to existing systems in Treck Drive and Andover Park West. Further, we anticipated drainage in the front of the building sheet- flowing from the parking lot to biofiltration swales prior to discharge to the existing "tightline" system. Since we were unable to access the Treck Drive system, or achieve the concept of a heavily - grassed, gently - sloping bioswales, our "final - final" design collects and directs runoff to the Andover Park West outfall. The connection to said outfall is made at two locations each with an oil /water separator sized appropriately. During the design of the building and site improvements, we encountered the following problems: A. Conveyance to Treck Drive system: 1. Due to the shallow depth of the existing and proposed - receiving drainage manhole (approximately two feet) in Treck Drive and the depressed railroad tracks between the manhole and our site, a 12" stormline under the tracks would have approximately one foot clearance from the bottom of rail - less than four inches from the bottom of the ties. This would be unacceptable to the Union Pacific Railroad. P.O. BOX 88050 II 18010 SOUTHCENTER PARKWAY • TUKWILA, WASHINGTON 98138 I1 TELEPHONE: (206) 575 -3200 • FAX: (206) 575 -3207 223.01- SE•GA- LM- A372NO An equal opportunity employer Mr. Ron Cameron, PE Public Works Department CITY OF TUKWILA July 30, 1993 Page 2 of 4 2. The proposed "tightline" system consisted of a 15" stormline laid at 0.20% grade to a catch basin on the east side of the tracks and a 12" stormline at 0.20% grade (match pipe inverts) under the tracks to a . catch basin on the west side. Our drainage analysis provided a runoff estimate of 2.74 cfs in a 10 -year storm event, after development, for the easterly 3.4 acres of the site, and when added to the other contributing areas in the Treck Drive system would result in a surcharge of the new 12" and 15" lines, and existing 15" line, to the point of connection to the 24" outfall in Andover Park East. During an "as- built" survey of the Treck Drive storm drainage system, it was found that parking areas adjacent to the street were lower than the street elevation, and consequently were dewatered during storms by pumping to the Treck Drive tightline. Any surcharging of the Treck system could facilitate flooding in said parking areas, which might damage existing buildings and improvements. This situation is unacceptable to the applicant and City of Tukwila. Conclusion: The premise that runoff, after development, should or could be conveyed to, and through the Treck Drive "tightline" was faulty and invalid. Consequently, the only option available to the applicant for the disposal of this runoff was conveyance to the existing 36" and 42" outfall in Andover Park West. B. Parking Lot Biofiltration Swales: 1. In order to sheet -flow the four -acre parking lot into two- biofiltration swales on the west and north extremity of the site, we created a ridgeline diagonally from the building to the street from which flowed runoff collected on the paved surface. The configuration of the lot required a, minimal "tightline" collection system to convey drainage to the upper -end (head) of the swales. (Further study of this concept lead us to reconsider in favor of substantially more catch basins to "dry up" or dewater the surface for the benefit of pedestrians). Due to the depth of the "tightlines," we were unable to gravity -flow the collected "tightline" water into the "head" of the swales. The bioswales were designed with longitudal slopes of 0.30% while maintaining a maximum side slope of 3:1 at the farthest "end." We envisioned a slotted manhole at the downstream end of each "tightline" (at the approximate "head" of each swale) wherein damboards could be inserted to back -up collected runoff to a height where said waters could gravity -flow through a 6" pipe to each swale. Mr. Ron Cameron, PE Public Works Department CITY OF TUKWILA July 30, 1993 Page 3 of 4 Given the depth of the swale (maximum three feet at downstream ends) and the width of the usable corridor - back of sidewalk to edge of paving - which ranges from 11 to 14 feet, a concrete wall was needed for the entire length of the swales. The top of the wall would be level with the sidewalk, while the bottom followed the flowline of the swale. It was thought that this wall would have a 4" to 6" lip in the swale flowline so that landscape maintenance (mowing) could be optimized. Any wall in this area would require some type of protective railing for public safety. Due to the substantial area of sheet -flow drainage, coupled with our inability to gravity flow collected "tightline" drainage into the upper -end of the bioswales, the concept was unacceptable to the applicant. 2. We then redesigned the parking lot by "dimpling" the surface southwest and northeast from the ridgeline previously established. Within the low points, or valleys of the dimples, we located catch basins to collect the runoff. The 200 foot area (south and east) from the northwest corner of the lot was tipped to sheet -flow into bioswales to eliminate the mechanical requirement in the original design. We lowered the bioswales such that the "tightline" systems discharged directly into the "head" of each swale. To facilitate this type of system, the bioswales were in essence a channel with reinforced concrete walls (both sides) and a six- foot wide bottom. Protective railings would. be required on each wall for public safety. Where the system would function adequately for conveyance, . it was apparent that the water quality enhancement feature of the system would not work. The bioswales would be visually unattractive and maintenance intensive which characteristics are unacceptable to the City and applicant. Conclusion: We concluded at this point that the idea of heavily- grassed, gently - sloping bioswales, wherein the drainage sheet -flowed from the parking lot into the swales was not possible. We, therefore, eliminated the bioswales in favor of oil /water separators, and redesigned the parking lot accordingly. Mr. Ron Cameron, PE Public. Works Department CITY OF TUKWILA July 30, 1993 Page 4 of 4 As you will remember, when we encountered the various problems outlined above, we discussed with you the options available to us to try to find alternate solutions beneficial both to the City and the applicant. It appears that the design evidenced on the attached Sheet 2E, entitled "Grading, Paving and Drainage" is by far the most appropriate for all parties. We request your approval of said system so we can proceed with construction. Very truly yours, David R. Millard, PE, PLS su maraec1drm1camcron2.1tr Attachments: Storm drainage /oil -water separator calculations, 3 sets Grading, Paving and Drainage Plan (Sheet 2E), 6 prints lemma ,,1",q4- 1 City of Tukwila John W. Rants, Mayor Department of Community Development Rick Beeler, Director July 14, 1993 Dana Warren Segale Business Park P.O. Box 88050 Tukwila, WA 98138 RE: SEPA MDNS SEGALE RETAIL CENTER FILE # L93 -0017 Dear Mr. Warren: This letter is in response to the two items you have identified in your letter regarding the Mitigation Conditions for Segale Retail Center. I have asked Ron Cameron, City Engineer, to review your comments. Ron Cameron response is the following: "Item 1 - Mitigation Credit Sidewalk, curb, gutter, and drainage frontal improvements are required by ordinance. in each of the discussions, it was pointed out that frontal improvements required by ordinance are not credited against mitigation costs. For example, Home Depot is improving frontal on S 180 St and has no credit given against their mitigation costs. Other developments routinely sign developer agreements to reimburse the cost of frontal improvements in addition to their mitigation costs - this is where a project is in progress to construct the frontal improvements. The Segale development would not receive credit against the mitigations for frontal improvements along Andover Pk W nor along Strander. Credit would be given for the frontal improvements north of Strander, signal pole relocation, and utility relocates for the widening. This is consistent with the Computer City and other capacity widening improvements by developers. Mitigation credit is not and has not been given for frontal improvements (c /g /sw. /associated drainage). Item 2 - Treck Right of Way Treck is reserved by the proposal and consistent. Treck is not a designated arterial: arterials are required to be dedicated but not access streets. the agreement provides for its dedication and construction similar to the Marriott. 6300 Southcenter Boulevard, Suite !1100 0 Tukwila, Washington 98/88 d (206) 431 -3670 0 Fax: (206) 431 -3665 . .. Page 2 SEPA MDNS L93 -0017 A driveway queue analysis for Andover Pk was requested. It was to include a drawing showing the driveways on both sides of the street, channelization, queueing analysis, and effects. The June 6 memo to Bob Betts stated: "Driveway queue analysis has been verbally reviewed on several occasions and will be shown in the final report. Any revisions can be handled with the permit process." The analysis has not been received and should be." Should you have any further questions, please feel free to call or write. Sincerely, ack Pace Senior Planner 0 cc: Ron Cameron City Engineer To: Jack Pace �� RECEIVED From: Ron Cameron Date: June 24, 1993 Subject: Response to Dana Warren's 6/17 Segale SUNtiAt40 Item 1 - Mitigation Credit COMMUNITY DEVELOPMENT Sidewalk, curb, gutter, and drainage frontal improvements are re- quired by ordina ce. In each of the discussions, it was pointed out that frontal . ited against mitiga ing frontal on S 180 mitigation costs. Ot agreements to rei tion to their mitig progress to construc opment would of tal improvemen provements required b ion costs. For examp t and has no credi developm e cost osts ont it t ceiv ong `Andove ordinan are not cred- e, Ho epot is improv- giv a inst their ti a s' n developer im ro ements in addi- where a project is in ts. The Segale devel- ations for fron- ander. Credit would be giv -. • for `lie fr 'nt l impov Strander, signal -•ie relocation, and utili widening. This is consistent with he Compu pacity widening improvements by dev= lopers. orth of ocates for the City and other ca- Mitigation credit is not and has not been given for frontal im- provements (c /g /sw /associated drainage). Item 2 - Treck r/w Treck is reserved by the proposal and consistent. Treck is not a designated arterial; arterials are required to be dedicated but not access streets. The agreement provides for its dedication and construction similar to the Marriott. A driveway queue analysis for Andover Pk was requested. It was to include a drawing showing the driveways on both sides of the street, channelization, queueing analysis, and effects. The June 6 memo to Bob Betts stated: "Driveway queue analysis has been verbally reviewed on several oc- casions and will be shown in the final report. Any revisions can be handled with the permit process." The analysis has not been recieved and should be. CITY OF TUKWILA DEPARTMENT OF COMMUNITY DEVELOPMENT �•.,, ..•� 7- , z , Jl.111 I J 19.93 LAID USE PERMIT ROUTING FORM • PERMIT NO.: L. - 00 1 1 Parksl -:: PROJECT ADDRESS . ct_L_ rct_A-A,S �1 �1•� fic DATE TRANSMITTED Co — ( g _9 STAFF COORDINATOR�C �C! DATE RESPONSE RECEIVED • ;:;;.:<•:;e > >; ct pla s n i a r e•::a ach. cts.. n a d..re nd wth. o a"e..revr.e ..ttt .. d. r..a . Gate crucial concerns b checking the box ;next to the llne s� :an whi RESPONSE REQUESTED BY L,,_c9g--q,3 C, Sroof In::the s''`ace below; ❑ • C ❑ ❑ DRC review requested ❑ Plan submittal requested ❑ Plan approved Plan check date: Comments prepared by: OaJOB!B9 If SEGO L dE L S S7 C✓ 2E S ARA Firk L. Rick Beeler City of Tukwila 6300 Southcenter Boulevard Tukwila, Washington 98188 Re: SEPA MDNS Segale Retail Center File Reference # L93 -0017 Dear Mr. Beeler, JUN 1 71993 (�OiV1l'41L�1''•� ' OEVEL0PNI w 6/17/93 We have reviewed the SEPA MDNS for the above referenced project and found the following errors with regards to our understanding and agreement of the "Mitigated Conditions of Approval" (as listed on page #7) which need to be corrected prior to the final issuance of this SEPA document. Item #1 The value of improvements to be constructed by the applicant along the frontage of Strander Boulevard and Andover Park West as mitigation measures for the project will be credited towards the $169,782 total costs for traffic mitigation measures for the project. That total value for this credit is to include the costs for the following items: 1. New curb, gutter and paving along Strander boulevard and Andover Park West. (to replace existing) 2. Side walk along Andover Park West. (to replace existing) 3. Relocation of the necessary utilities, street lights, traffic signals, etc. to facilitate the widening of both Strander Boulevard and Andover Park West. Item #2 At the present time there is no Right of Way for Trek Drive located upon the property. The applicant agrees not to construct any building improvements on the south 40 feet of the property. The applicant agrees to construct a 24 foot wide driveway and 6 foot wide sidewalk within the south 30 feet of the property as per the P.O. BOX 00050 • TELEPHONE: (206) 575 -3200 • FAX: (206) 575 -3207 • TUKWILA, WASHINGTON 98138 • SEG ,LE eS(lS ®NESS F.ARIC L. Rick Beeler City of Tukwila 6300 Southcenter Boulevard Tukwila, Washington 98188 Re: SEPA MDNS Segale Retail Center File Reference # L93 -0017 Dear Mr. Beeler, y �r� RECEx �iE7 -- JUN 1 71993 [ FVELOPN1�:� 6/17/93 We have reviewed the SEPA MDNS for the above referenced project and found the following errors with regards to our understanding and agreement of the "Mitigated Conditions of Approval" (as listed on page #7) which need to be corrected prior to the final issuance of this SEPA document. Item #1 The value of improvements to be constructed by the applicant along the frontage of Strander Boulevard and Andover Park West as mitigation measures for the project will be credited towards the $169,782 total costs for traffic mitigation measures for the project. That total value for this credit is to include the costs for the following items: 1. New curb, gutter and paving along Strander boulevard and Andover Park West. (to replace existing) 2. Side walk along Andover Park West. (to replace existing) 3. Relocation of the necessary utilities, street lights, traffic signals, etc. to facilitate the widening of both Strander Boulevard and Andover Park West. Item #2 At the present time there is no Right of Way for Trek Drive located upon the property. The applicant agrees not to construct any building improvements on the south 40 feet of the property. The applicant agrees to construct a 24 foot wide driveway and 6 foot wide sidewalk within the south 30 feet of the property as per the P.O. BOX 88050 • TELEPHONE: (206) 575 -3200 • FAX: (206) 575 -3207 • TUKWILA, WASHINGTON 98138 attached drawing. Said sidewalk and street to be built to City of Tukwila street standards. Should the City of Tukwila choose to purchase this 30 feet wide Right of Way in the future, applicant agrees to accept a purchase price (per square foot) equal to the fair market value (per square foot) of the land, not including improvements, immediately north and adjoining the. Right of Way at the time of purchase. Very Truly yours, SEGALE BUSINESS PARK Vag di,(a/v/ Dana Warren. Enclosures L. CITY OF TUKWILA `. MITIGATED DETERMINATION OF NONSIGNIFICANCE (MDNS) DESCRIPTION OF PROPOSAL: CONSTRUCT NEW 123,051 SQUARE FOOT RETAIL CENTER WITH APPROXIMATELY 490 PARKING STALLS. PROPONENT: M.A. SEGALE, INC. ' ' LOCATION OF PROPOSAL, INCLUDING STREET ADDRESS, IF ANY: ADDRESS: PARCEL NO: 000480-O010, SEC/TWN/RNG: ]1E'1/4 SECTION 26 TOWNSHIP 23NRANGE_4E W�M. LEAD AGENC:Y� CITY OF TUKWILA FIL E NO: L 9]- O0 l 7 The City has determined that the proposal does not have aprobat/7e significant adverse impaot on the environment. An environmental impact statemen�/(ETS) is not required under RCW 43.21o'030(2)(C), This decision-,was matte after review of a completed environmental checklist and oth'H infurmation on fi7a with the lead agency. This information is avaiJa bl � �o. on raquest. Th e conditions to this SEPA Determination .'. ' ' ` Thi N5 is issued under. l977]1-34U(2)' Comments must be submitted by ��^ . The lead agency will not act on this p »nsa7 flr'l5 days from the date below. _______ L°~ Ric =-~~��lar` Responsible Official. City of Tukl]a, .(206) 431-3680 6300 Snuthoentar Boulevard Tukwila, WA 98]83. You may appeal this determination to the City Clerk at City Hall, 6200 Southcenter Boulevard, • Tukwila, WA 98188 no later than 10 days from the above signature date by \*ritten appeal stating the basis of the appeal for specific factual objections. You may be required to bear some of the expanses for an appeal. Copies of the procedures for SEPA appeals are available with the City Clerk and Department of Community Development. City of Tukwila . John W. Rants, Mayor Department of Community Development Rick Beeler, Director CITY OF TUKWILA MITIGATED DETERMINATION OF NON - SIGNIFICANCE PROJECT: Segale Retail Center DATE: June 2, 1993 PROPOSAL: To construct a 123,051 square foot retail facility with approximately 490 spaces of parking. LOCATION: Southeast corner of Strander and Andover Park West APPLICANT: Dana Warren OWNER: M.A. Segale, Inc. FILE REFERENCE: L93 -0017 THRESHOLD DETERMINATION: This is a Mitigated Determination of Non - Significance. ENVIRONMENTAL REVIEW RECORD The environmental review of this proposal consisted of an analysis based on the following documents included in the environmental record: A. SEPA Checklist submitted by Dana Warren dated 17 March 93. B. Letter from Dana Warren, dated 28 May 93 in regard to biofiltration and building square footage. C. Letter from David Millard, PE, PLS, dated 25 May 1993 in regard to drainage analysis. D. Report by Geo Engineers of 30 November 1992 in regard to Interim Evaluation and Recommendations Strander Boulevard Property. E. Traffic Impact Analysis Segale Retail Site by David Hamlin and Associates January 1993, (revised May 1993). F. Plans and Drawings by Lance Mueller & Associates, dated 10 May 1993. 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • (206) 431-3670 • Fax (206) 4313665 Segale Retail Center MDNS 6/2/93, Page 2 DESCRIPTION OF THE PROPOSAL The applicant proposes to construct a retail center for five tenants, occupying 123, 051 square feet on a 9.39 acre site. Uses would be for furniture and specialty shops such as a bookstore and sports equipment sales. The facility would consist of a one -story structure, ranging from 24 to 35 feet in height. The building would be located at the southerly and easterly property lines. Parking would be for approximately 490 vehicles, of which less than 30 percent would be for compact cars. Customer parking would be between the structure and the adjacent arterial streets. Service access would be from a combination of the extension of Treck Drive and from Strander via a former rail road easement. The property is currently undeveloped and is currently being used to stockpile approximately 35,000 cubic yards of fill material, arranged in the pattern of the proposed structure. PRINCIPAL CHECKLIST ITEMS TRAFFIC New trips. The traffic study by David Hamlin (reference E) estimates that the facility will generate, on a daily basis, 2,427 total new trips on to the city's street system. Of these, a total of 250 trips will be at the afternoon peak hour, and an additional 318 will be at the Noon Peak hour. These numbers reflect deductions for pass -by trips, which are those trips already being made in the vicinity of the project. Key intersection. At present the intersection of Strander Boulevard and Andover Park West is operating at a level of service "E" during the noon peak hour. This condition is primarily due to the lack of left -turn storage lanes in the north/south directions on Andover Park West. - Andover is currently a four -lane arterial with curb, gutter, street lights and sidewalk along most sections of the roadway. There is no sidewalk along the project's frontage. - Strander Boulevard is a multi -lane east -west arterial connecting Southcenter Parkway with West Valley Highway. Strander includes a two -way left -turn lane between Southcenter Parkway and Andover Park West. East of this intersection (which is at the proposed site) the street is striped for four lanes. Curb, gutter and street lights have been installed along the entire length of the street. There is no sidewalk along the project's frontage. With the proposed additional traffic, but with no improvements, the present configuration of Strander and Andover Park West will operate at a level of service "F" (failure). This deficiency will be eliminated by widening and incorporating left turn lanes on Andover Park West. The resulting level of service is projected to be "D." Segale Retail Center MDNS 6/2/93, Page 3 Project access. Traffic movements on Strander and Andover Park West indicate the need for protected left -turn lanes from these arterials into the proposed facility. If left - turn lanes are constructed on the arterials, the level of service of service at the site's access driveways is generally "D" or better. The one exception is for northbound turns from the site onto Strander at the noon peak hour. That movement will still operate at a level of service "E." Queue analysis. This is a study of the expected maximum line -up ( "queue ") for left -turns at the intersection and into the site. Andover Park West: The northbound left -turn at the intersection of Strander & Andover Park should have around 300 feet of storage to accommodate a worst -case condition. This distance extends just past the main (north) driveway to Burger King. This point is just across the street from the Segale Center. -The southbound left -turn from Andover into the Segale Center should have around 75 feet of storage to accommodate the movement during the noon peak hour. The proposed site access driveway is located approximately 460 feet south of the Andover/Strander intersection. The summation of these two queue lengths (i.e., 300 plus 75) could be accommodated within that distance. The resulting space would allow for storage of 3 -4 vehicles during a 2 minute interval for northbound left -turns into Burger King. Strander Boulevard: The westbound left -turn queue from Strander to Andover will require a similar storage area of 300 feet. Westbound access into the Segale Center will require 150 feet of storage. These two westbound queue storage lengths would not overlap or extend beyond the driveway. There is a slight or occasional possibility that the driveways on the north side of Strander will be blocked by this westbound left turn queue. Treck Drive Extension: Treck is a local access street. Currently it is not built alongside the proposed retail center. It provides service from Andover Park East and dead -ends at the railroad tracks which are at the southerly property line of the proposed Segale Retail Center. Extension of this street from the railroad tracks to Andover Park West would provide another east -west connection which could be used as an alternate route to Strander Boulevard. Its use would be somewhat limited since it would not provide direct access to Southcenter Mall, and vehicles would eventually need to use Strander Boulevard. The potential use of a completed Treck Drive by patrons of the retail site would likely be limited to those trips destined to /from the southeast. This would range from 0 -20% of the retail site traffic, most likely around 10 %. Segale Retail Center MDNS 6/2/93, Page 4 Service Access. There are two access points proposed for trucks and other services to the retail center. One will be from Strander in the vicinity of a vacated railroad easement. This is just west of the access driveway that serves the adjoining Southcenter Professional Plaza. The other service access will be from an extension of Treck Drive west from the railroad tracks to Andover Park West. This extension will consist of constructing two lanes of roadway and, on the project side, curb, gutter and sidewalk. The adjoining Marriott Courtyard motel presently takes its access directly from Andover Park. A future driveway revision, to be done by the City of Tukwila at the time of completion of Treck Drive, will include relocating Marriott's access from Andover to Treck Drive. Such a revision is not a part of or a direct consequence of the Segale Center proposal. DRAINAGE Drainage enhancement. As proposed, surface water from the front parking lot will be diverted through one of two biofiltration strips located at the site's northwest corner. The areas closest to the building will be taken into catch basins and then will be piped to the head of the bioswale. The parking areas closest to the northwest portion of the site will sheet -flow directly into the bioswale. All of this surface water will pass through an oil-water separator prior to entering the existing system. Roof drainage and loading area drainage are proposed to be piped without biolfiltration or water quality enhancement. All drainage will then be discharged to the existing "tightline" systems in Treck Drive and Andover Park West. SOILS The site currently stockpiles approximately 35,000 cubic yards of fill material. This action was issued a mitigated determination of non - significance on 29 April 1991 under EPIC file 19 -91. A geotechnical report (Environmental Review reference "D.") indicates that the stockpile has acted as a pre -load and that subsidence of the underlying soils has been monitored intermittently since the August 1991 placement. The geotechnical report concluded that the upper compressible soil layer has reached nearly 100 percent of the expected total consolidation due to the influence of the preload fill. The lower compressible soil layer has reached approximately 65 percent of the expected total consolidation due to the influence of the preload fill. The report also concluded that the site has been sufficiently surcharged below the footprint of the existing preload fill to accommodate the proposed building with little additional settlement from the compressible soil layers. • gale Retail Center MDNS 6/2/93, Page 5 The report noted, however, that the currently proposed building will cover a different footprint area than the area that has been surcharged by the existing preload. A reconfigured preload was recommended, along with a program of monitoring the settlement. CONCLUSIONS AND RECOMMENDATIONS Issuance of a Mitigated Determination of Non - Significance is appropriate since the environmental review indicates no probability of significant adverse environmental impacts from the proposal. Traffic: Mitigation costs. The proposal's traffic study shows that furniture and specialty shop uses will generate 2,427 daily and 318 peak hour trips. This is a May 1993 refinement of the initial study for 104,000 square feet of retail originally studied in January 1993. It is similar to the Eagle Hardware, Computer City and Mervyn's studies in methodology, studies that have been conducted in the past few years. The traffic study (Reference E) demonstrates that five intersections will be impacted by peak hour traffic from the project. Impacts and pro -rata share costs for improvements are as follows. They are based on the City's Traffic Deficiencies Study, which identifies increased traffic and improvements needed to provide the safety and capacity for the year 2010 traffic. The cost of each identified capacity improvement is divided by the "1990" to 2010 traffic increase to determine the prorated share cost. Intersection Southcenter Pkwy @ Strander Andover Park West @ Strander Andover Park East @ Strander S. 180th Street @ State Route 181 Interurban @ Interstate 405 Project Pro -rata $ /trip Project Cost 2010 increase 96 $140. $13,440 146 $317 $46,282 116 $135 $15,660 64 $475 $30,400 64 $1,000 $64,000 TOTAL $169,782.00 Segale Retail Center MDNS 6/2/93, Page 6 Site - specific mitigations. The proposal identifies site - specific improvements to Strander and Andover Park. These include increasing the width of Andover Park to 5 lanes, one of which will be a protected left -turn lane along the entire length of the site. A similar protected left -turn lane will be required for access to the site from Strander. This may require additional left -turn queue space on Strander east of the project's eastern boundary. In addition there may also be the need for an eastbound acceleration taper from the site's main access drive onto Strander Boulevard. Curb, gutter, and sidewalk will also be provided along the entire site's frontage on these two boulevards. Street lights and traffic signals /controllers on the project site may have to be relocated as required to create the necessary right of way. Treck Drive will be constructed to a two -lane cross section. Curb, gutter and sidewalk will be required on the north (project) side. Improvements are to be from Andover Park West to the westerly edge of the present railroad easement at the site's southeast corner. Given the street's projected low volumes, it does not need to be extended across the railroad tracks. For similar reasons, improvements are not required at this time on the south (Marriott Courtyard) side. Pedestrian improvements. Installation of sidewalk, curb, and gutter on Strander and Andover Park West will mitigate pedestrian safety issues on these streets. These features are normally treated as a permit requirements. Pedestrian safety issues are being addressed in this manner. Drainage. With exception of the site's loading area, site drainage is in accordance with City plans. Water. Analysis in the Water Comprehensive Plan shows a deficiency in waterline velocities on Strander. This is the same issue as at Mervyn's, and is also a result of conversion of warehouse to retail and office uses. A Local Improvement District will provide for the additional waterline to correct the deficiency. Sewer. Existing sewer is adequate. Soils. Given the extensive amount of fill material, the 35,000 + /- cubic yard preloading program appears comprehensive. Details of the resulting ground surcharge and its monitoring can be provided at the time of application for a building permit. Segale Retail Center MDNS 6/2/93, Page 7 MITIGATED CONDITIONS OF APPROVAL TRAFFIC: 1. Capacity /Safety improvements. The applicant is to construct frontal improvements as shown in the site plan prepared by Lance Mueller & Associates dated 10 May 1993. This includes either the dedication or easements necessary to provide five lanes along the entire frontage of both Strander and Andover Park. This also includes curb, gutter, sidewalk and relocation of other street utilities as noted in the conclusion section above. 2. Off -site mitigation. The applicant is to pay $169,782 in mitigation costs at the time of issuance of the building permit. 3. Treck Drive improvements. The applicant is to grant a 60 foot easement, 30 feet on either side of the present centerline of Treck Drive. The applicant is to construct Treck, including curb, gutter and sidewalk on the north side of the easement plus two lanes of road, all built to City standards. Should the City choose to purchase this right -of -way in the future, applicant agrees to accept fair market value for unimproved land at the time of such a purchase. Utilities for this portion of the site are to be located within the Treck Drive easement area, and will be as determined at the time of application for the building permit. DRAINAGE: Drainage for the service and loading area on the east and southeast sides of the building will include the use of oil water separators as water - quality enhancements. WATER: Applicant agrees to participate in a Local Improvement District for upgrading the waterline in Strander Boulevard. SOILS: Soils are to be certified as suitable for foundations and other elements by a letter from a licensed geotechnical engineer at the time of application for a building permit. Details of the new settlement monitoring program are to be made available at that time. Prepared by: R. S. Betts cc: J. Pace To: From: Date: Subject: Bob Betts Ron Cameron May 28, 1993 (6/1/93 editorial correction) Segale Retail, pg 1 of 2 The traffic study showing Furniture and Specialty Shop uses gener- ates 2,427 daily trips and 318 peak hour. This is a refinement of the initial study for 104,000 sq. ft. of retail. It is similar to the Eagle Hardeware, Computer City, and Mervyn's studies in methodology; studies that have been conducted in the past few years. Development traffic mitigations are determined from identified ca- pacity or safety improvements needed for traffic increases. The Traffic Deficiencies Study identifies increased traffic and im- provements needed to provide the safety and capacity for 2010 traffic. The cost of the capacity improvement is divided by the "1990" to 2010 traffic increase to determine the prorated share cost. Mitigations are determined from the development's increased peak hour traffic and the cost /trip. Segale Retail peak hour traffic affects five intersections with improvements planned for construction within the next 5 years: Southcenter Parkway /Strander. The increase to 2010 is 954 peak hour trips and improvement cost is $134,000. The pro- rated share is $140 /trip. Segale Retail's 96 peak hour trips mitgation is $13,440. Andover Park W /Strander. The increase to 2010 is 934 trips and improvement cost is $296,000. The prorated share is $317 /trip. Segale Retail's 146 peak hour trips mitgation is $46,282. Andover Park E /Strander. The increase to 2010 is 694 peak hour trips and improvement cost is $94,000. The prorated share is $135 /trip. Segale Retail's 116 peak hour trips mitgation is $15,660. 5 180 St /SR181. The increase to 2010 is 3,200 trips and improvement cost is $1,520,000. The prorated share is $475. Segale Retail's 64 peak hour trips mitgation is $30,400. Interurban /I405. The improvement cost at this location to- taling over 13,000,000 and complexity of weaving traffic would result in prorated shares exceeding $5,000 /trip. It has been previously determined to use a "fairshare" of $1,000 /trip with increased traffic at this location. Segale Retail's 64 peak hour trips mitgation is $64,000. The Hamlin study calculates the Segale mitigations at $169,782. The Final David I. Hamlin Report trip distribution will need to be checked to verify the $169,782; the work has been professional and any revisions would be minor. No problems are anticipated. Con- struction of street improvements can be credited toward the mitigation costs. To: From: Date: Subject: Bob Betts Ron Cameron May 28, 1993 (6/1/93 editorial correction) Segale Retail, pg 2 of 2 Sidewalk, curb, and gutter required by ordinance will mitigate pedestrian safety issues and are normally treated as a permit re- quirement. It should be noted that ped safety issues are being addressed in this manner. Driveway queue analysis has been verbally reviewed on several oc- casions and will be shown in the final report. Any revisions can be handled with the permit process. The drainage has been reviewed and designed in accord with City plans. A water no protest LID agreement will be needed to provide the Strander waterline defeciency correction; this is same issue as at Mervyn's where the Water Comp plan analysis shows a waterline ve- locity defeciency by the new development and conversion of ware- house to retail and office. An LID will provide for the addi- tional waterline to correct the defeciency. Sewer is ok. t1Ki�l III it (I Ill 40'141 :`11 F}F:t�t�• '• �''`t.+�l` 'r 111.1:1 • CITY OF TUKWILA DEPARTMENT OF COMMUNITY DEVELOPMENT ENVIRONMENTAL REVIEW ROUTk G FORM anni.: EPIC: PROJECT E 7-4 I L-- s ADDRESS %�/3� %p 7Z �� v t> i� (A) DATE TRANSMITTED.. /1 3 RESPONSE REQUESTED BY ,4px' /L a t. /i;"9 STAFF COORDINATOR / /J DATE RESPONSE RECEIVED attached environmental` checklist was received fegarding proie:ct Please reviow.;a omm:ont::.bolow to advise :tbe responsible official::: regarding:;: the threshold determination T environmental review filo .is.,.avatlabie: in ,the Planning:: Department through the ab:ove:staft oordinator ; :Co:mmonts regarding;the: project: you wish carried to tho Planning:Gor"misslor. Board of Ad.ustmont and City Council should be submitted in the comment section beio ITEM TTi9G//E is COMMENT w_! AMt!'_i 4e. A/ c "t1.4 A/ 7v you /4/N /C.4/ /y oS /9e01/Z? O 0 • Ale 1/ LEA .tea D.S. ,4 ? cA,/ f /T ,Q�S Date: Comments prepared by; ,. '- T' 6,...,4., 4 To: Bob Betts From: Ron Cameron Date: May 28, 1993 Subject: Segale Retail The traffic study showing Furniture and Specialty Shop uses generates 2,427 daily trips and 318 peak hour. This is a refinement of the ini- tial study for 104,000 sq. ft. of retail. It is similar to the Eagle Hardeware, Computer City, and Mervyn's studies in methodology; studies that have been conducted in the past few years. Development traffic mitigations are determined from identified capacity or safety improvements needed for traffic increases. The Traffic Defi- ciencies Study identifies increased traffic and improvements needed to provide the safety and capacity for 2010 traffic. The cost of the ca- pacity improvement is divided by the "1990" to 2010 traffic increase to determine the prorated share cost. Mitigations are determined from the development's increased peak hour traffic and the cost /trip. Southcenter Parkway /Strander. The increase to 2010 is 954 peak hour trips and improvement cost is $134,000. The prorated share is $140 /trip. Segale Retail's 96 peak hour trips mitgation is $13,440. Andover Park W /Strander. The increase to 2010 is 934 trips and improve- ment cost is $296,000. The prorated share is $317 /trip. Segale Retail's 146 peak hour trips mitgation is $46,282. Andover Park E /Strander. The increase to 2010 is 694 peak hour trips and improvement cost is $94,000. The prorated share is $135 /trip. Segale Retail's 116 peak hour trips mitgation is $15,660. S 180 St /SR181. The increase to 2010 is 3,200 trips and improvement cost is $1,520,000. The prorated share is $475. Segale Retail's 64 peak hour trips mitgation is $30,400. Interurban /I405. The improvement cost at this location totaling over 13,000,000 and complexity of weaving traffic would result in prorated shares exceeding $5,000 /trip. It has been previously determined to use a "fairshare" of $1,000 /trip with increased traffic at this location. Segale Retail's 64 peak hour trips mitgation is $64,000. The Hamlin study calculates the Segale mitigations at $169,782. The Fi- nal David I. Hamlin Report trip distribution will need to be checked to verify the $169,782; the work has been professional and any revisions would be minor. No problems are anticipated. Construction of street improvements by the applicant can be credited toward the mitigation costs. Sidewalk, curb, and gutter required by ordinance will mitigate pedes- trian safety issues and are normally treated as a permit requirement. It should be noted that ped safety issues are being addressed in this manner. Driveway queue analysis has been verbally reviewed on several occasions To: From: Date: Subject: Bob Betts Ron Cameron May 28, 1993 Segale Retail, page 2. and will be shown in the final report. Any revisions can be handled with the permit process. The drainage has been reviewed and designed in accord with City plans. 4A water no protest LID agreement will be needed to provide the Strander waterline defeciency correction; this is same issue as at Mervyn's where the Water Comp plan analysis shows a waterline velocity defeciency by the new development and conversion of warehouse to retail and office. An LID will provide for the additional waterline to correct the defeciency. Sewer is ok. .�.,.,,...<.... SE :SALE 8LISLIVESS F' AF?IC Bob Betts Department of Community Development City of Tukwila 6300 Southcenter Boulevard Tukwila, Washington 98188 Re: Response to SEPA questions Strander Retail Center Dear Bob, 5/28/93 REC l*^m r .:. �^—^ a �i s The following are responses to the questions raised in our 5/27/93 meeting regarding the SEPA determination for the Strander Retail Center. 1. Biofiltration Enclosed are (2) drawings showing the proposed biofiltration location and detail. All the surface water from the front parking lot will be diverted thought the biofiltration strip. The areas closest to the building will be taken into catch basins and piped to the head of the bioswale. The areas closer to the intersection will sheet flow directly into the bioswale. 2. Building square footage Should there be any discrepancy in the square footage listed in the SEPA application and those shown on the drawings the areas shown on the drawings shall control. Please call me if you have any questions. Very truly yours, SEGALE BUSINESS PARK Dana Warren Enclosure P.O. BOX 88050 • TELEPHONE: (206) 575 -3200 • FAX: (206) 575.3207 • TUKWILA, WASHINGTON 98138 EXISTING WAREHOUSE BUILDING STAANDER BLVD MOTEL PARKING LOT SITE PLAN ED TRECK DRIVE EXISTING WAREHOUSE BUILDING FIXTURE SCHEDULE YOUNIMG MAP E STATISTICS typical section biofiltration filter strip BIOFILTRATION FILTER STRIP May 25, 1993 M.A. SEGALE, INC. GENERAL CONTRACTORS Mr. Ron Cameron, P.E., City Engineer Public Works Department City of Tukwila 6200 Southcenter Blvd. Tukwila, Washington 98188 Re: Drainage Analysis - Strander Site Dear Ron: RECEIVED MAY 2 61993 TUKWILA PUBLIC WORKS In accordance with your request, we have attached hereto a letter report addressing the drainage collection, treatment and disposal for our Strander site situated in the southeast quadrant of Strander Blvd. and Andover Park West intersection near Southcenter in Tukwila, Washington. In summary, we propose to direct runoff from the site to existing systems in Treck Drive and Andover Park West. Drainage in the front of the building will sheet -flow from the parking lot to biofiltration swales for water - quality enhancement prior to discharge to the existing "tightline" system. If you have any questions, please do not hesitate to contact the undersigned. Very truly yours, David R. Millard, P.E., P.L.S. su mas- sec \drm \cameron.ltr Enclosure ; )r'iv'iENT P.O. BOX 88050 • 18010 SOUTHCENTER PARKWAY • TUKWILA, WASHINGTON 98138 • TELEPHONE: (206) 575.3200 Y FAX: (206) 575 -3207 223.01- SE- GA- LM- A372NO An equal opportunity employer M. A. SEGALE, INC.'S STRANDER SITE DRAINAGE ANALYSI8 RECEIVED MAY 261993 TUKWILA PUBLIC WORKS GENERAL: Originally, prior to major development near the site, an irrigation ditch traversed the site northeasterly and southwesterly, bisecting the property into two drainage areas. The west side was approximately six acres while the east side was approximately three acres. Upon construction of Strander Blvd. and Andover Park West, and the subsequent filling of the site, drainage flowed predominately westerly. Once the site was surcharged, the drainage was again divided with 6.0 acres flowing north and west, and 3.4 acres flowing south and east. Construction of the proposed building will perpetuate this drainage scheme. Based on this history, the following runoff values were computed utilizing King County SWM Divisions' "HYD" computer program. Condition - 10 vr storm event Western 6.0 acres Eastern 3.4 acres Undeveloped [before surcharge] 4.78 cfs 0 cfs Undeveloped [after surcharge] 3.04 cfs 1.72 cfs Developed 4.86 cfs 2.74 cfs P -17 TRUNRAGE FACILITIES: Kramer, Chin & Mayo, Inc., (KCM) a consultant, employed by the City of Tukwila, prepared a study of the P -17 drainage basin, dated october, 1989. While the Strander site was not included in the drainage basin by the consultant, it lies adjacent and northerly of said basin and contributes drainage thereto. The study determined that "the existing system is adequate for existing flows and can accommodate future flows with a minimal amount of surcharging." KCM modeled the basin utilizing the Storm Water Management Model (SWMM) provided by the Environmental Protection Agency and University of Florida. Without this software, an identical reproduction of the drainage basin, including the Strander site, is impossible. Consequently, this analysis is limited to assessment of the trunkage in both Andover Park West and Andover Park East south of the site to the P -17 channel as documented in the KCM study. The calculated - developed 10 year storm event from the site (4.86 cfs to Andover Park West, and 2.74 cfs to Andover Park East) will be reduced somewhat when integrated with the actual storm hydrograph for the basin. However, utilizing Table 4.1, capacities and design flows from the KCM study, the runoff from the site, if added directly to KCM's computed flows (10 years) , will not surcharge the existing trunkage in Andover Park West and Andover Park East. BITE COLLECTION SYSTEM: The applicant proposes to collect runoff from the front (westerly side) of the building in a "tightline" system (12" and 15" diameter pipeline) conveying said waters to the existing 42" trunkline in Andover Park West. Water quality enhancement will be provided by biofiltration swales (2) and an oil /water separator. Runoff from the rear (easterly side) of the building will be collected in a "tightline" (12" diameter pipeline) discharging said waters into a 15" collection line in Treck Drive. No water quality enhancement will be provided for this system. site conditions analysis J 4 rni z rvUvu C tot -V4 L4 Y C )04,4 4, 40 rwL bfl�v ►'I RECEIVED MAY 2 6 1993 TUKWILA PUBLIC WORKS , . '-, .~~~^...~-~' ..'.~~�^^~~- .�_~.~_'~.~.~ �,����� x�r���rwr� r�v~���°��� .AREA(ACRES) 6.0 PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT) 4.86 7.67 56059 - ' .� ` . '. � . . . \` / PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN .6 89.0 5.4 98.0 2.5 1-` � ` � ��� �� ���cts. �PECIFY: C - CONTINUE, N - NEWSTORM, P - PRINT; S - STOP ___________ m7ER: A(PERV), CN(PERV), A(IMPERV>, CN(IMPERV), TC FOR BASIN NO 3 /.5,89,4.5,98,2.47 ATA PRINT-OUT: AREA(ACRES) 5.0 PEAK-Q(CFS) 4.05 ' PERVIOUS IMPERVIOUS CN A CN .5 89.0 4.5 98.0 T-PEAK(HRS) 7.67 VOL(CU-FT) 46716 TC(MINUTES) 2.5 JPECIFY: C - CONTINUE, N - NEWSTORM, P - PRINT, S - STOP ----------------------------- NTER: A(PERV), CN(PERV), A(IMPERV), CN(IMPERV), TC FOR BASIN NO. 4 D.4,89,3.6,98,2.47 DATA PRINT-OUT: AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN 4.0 .4 89.0 3.6 98.0 2.5 PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT) 3.24 7.67 37372 . � �� � 0 (t4I `&yt2=''i.m~ '- � �,� ' W ~ � mm�« � �� �«��'. m'�� ~ �/��� Table 4.1 Capacities and Design Flows Model 25 -Yr 25 -Yr/ Surch. 10 -Yr 10 -Yr/ Surch. Element Description Q full Flow Qfull Duration Flow Qfull Duration No. Description (cfs) (cfs) Ratio (Minutes) (cfs) Ratio (Minutes) 175 Minkler Extended 107 East of SC Parkway 405 Minkler Extended 107 Btw. SC Pkwy & And Pk W 415 Minkler Extended 115 W. of Andover Park West f425, Andover Park West 61 South of Minkler 435 Andover Park West 36 North of Minkler (1 Minkler & And Pk W 148 to P-17 Ditch 450 P -17 Ditch • • 220 From And Pk W to RR '455x.: R.R. X -ing over 135 �-' P -17 Ditch . 460 P -17 Ditch 220 From RR to Comm Access 461 Commercial Access 360 over P -17 Ditch 462 P -17 Ditch 220 r _ From Comm Acc to And Pk E `465'°. Andover Park East 90 over P -17 Ditch 490 Andover Park East 19 North of 180th 500 Andover Park East 35 Btw Minkler & 180th 510 Andover Park East 35 Btw Minkler & 180th 520 Andover Park East 50 South of Minkler 601 Andover Park East 21 North of Minkler 470 P -17 Ditch 300 ,.. From And Pk E to RR 475 R.R. X -ing over 174 P -17 Ditch 480 P -17 Ditch 330 From RR to Ind Dr 481 Industry Drive over 360 P -17 Ditch 482 P -17 Ditch 330 From Ind Dr to Pond 525 P -17 Pump Sta. Storage Pond * In Channel 80 0.75 88 0.82 101 0..88 70 1.15 35 14 0.39 189 1.28 30 190 0.86 190 1.41 30* 190 0.86 190 0.53 190 0.86 193 2.14 90* 15 0.79 26 0.74 35 1.00 36 0.72 18 0.86 250 0.83 250 1.44 30* 280 0.85 280 0.78 280 0.85 30 4.2 59 0.55 64 0.60 75 0.65 51 0.84 - 9 0.25 135 0.91- 135 0.61 135 1.00 135 0.61 135 0.38 135 0.61 135 1.50 65* 10 0.53 17 0.49 23 0.66 - 22 0.44 12 0.57. 171 0.52 189 1.09 189 0.57 190 0.53 190 0.58 30 RECEIVED MAY 2 61993 TUKWILA PUBLIC WORKS 0 1 aaaaaaa�aaa�uaa aaaaaaaaaaaaaaaaaa -( �aaasaaaaaaaaaaaaa aaaMEMZIS I- Maa_r■ S I ICW� 111111.111111111 R111111101111 RECEIVED MAY 2 6 1993 f IC WORKS • 19IST ST N. SW VICINITY MAP • MARIO A. SEGALE PROPERTY TUKWILA, WA. City of Tukwila John W. Rants, Mayor Department of Public Works PUBLIC WORKS DEVELOPMENT PLAN REVIEW PUBLIC WORKS ENGINEERING CONFERENCE ROOM 8:45 A.M. APRIL 27, 1993 Ross A. Earnst, P. E, Director ATTENDANCE: Phil Fraser, Pat Brodin, Ted Freemire, Mike Alderson, Greg Villanueva, Ross Heller and John Pierog (cf: Ron Cameron, Robin Tischmak and Permits) ITEM 1. Segale Retail Strander Boulevard and Andover Park West (L93 -0017 & 0016) ENGR. JP REVIEW /ACTION Environmental and Design Reviews (Brought back from last week) Building square footage and number of parking stalls do not agree between the plans and the environmental checklist. The private driveway to the northeast is shown as railroad easement on K.C. assessor's maps. Likewise, the 23'6" rail easement to the southeast is shown as 27' on assessor's maps. Track exists along this easement. This needs to be verified since changes to or abandon- ments of easements may be necessary. Treck Drive was to be extended to Andover Park West with dedication of R/W to the City. Half -width dedication to the east is 30'. This should be matched. Dedication of additional R/W along Andover Park West and Strander Boulevard for turnout areas was recommended. Sidewalks should be 6' wide in C -2 zoned areas. Only 5' is shown. Recommended is the joint use of the driveway at the NE corner. Maximum driveway width for commercial driveways is 35'. Driveways shown are 40'. At the pre -app. meeting, it was noted that a 6 -1/2' easement for curb and sidewalk would be required along Andover Park West. These plans show a 6" R/W dedication. At the NW corner, no signs, plantings, etc., over two feet in height are permitted within 35' of corner. No biofiltration is shown and was recom- mended at the pre -app. meeting. Phil recalled that at a previous meeting a 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: (206) 433 -0179 • Fax (206) 431 -3665 Plan Review Agenda Page 2 April 27, 1993 2. Gateway North Building No. 8 (E. B. Bradley) South 116th Street (L93- 0027, 0028 and 0029) JP hydraulic analysis was requested to identify development runoff to the P -17 basin and Gilliam Creek. A .capacity analysis for the P -17 basin pipe in APE was also required. Development dis- charge has no detention proposed. Referring to the P -17 Drainage Basin Study for the Tukwila Pond vicinity, portions of this development under 26' in elevation will receive some flooding during a 10 -year or greater storm event. Water /sewer /storm utilities need to be constructed to tie in to APW as part of Treck Drive extension. Fire loop is not shown. A no- protest water agreement for Strander Boulevard needs to be signed. Ron has reviewed Traffic Impact Analysis and needs to identify associated mitigations. Environmental, Design and Shoreline Development Reviews (Brought back from last week) Building square footage does not agree between plans and environmental check- list. Plans associated with previous project for channelization /signing/ striping on East Marginal Way South should be implemented on this project since earlier project was not built. Specific traffic analysis for this proposal has not been provided. Where is the fire vault, with double detector check valve assembly, to be located? Some biofiltration is shown. Oil /water separator is also to be provided. Since banks are eroding in this area, stabil- ization is required. As discussed at the pre -app. meeting, the City will provide the design and permits; the developer will fund the construction. Two fire hydrants need to be relocated. Sidewalks are recommended adjacent to this area since existing facilities terminate at driveway on the opposite side of South 116th Street to the east. Recreational facilities and comments should be coordinated with Don Williams. Other traffic mitigations referred to Ron. Plan Review Agenda Page 3 April 27, 1993 3. Gateway Corporate Center JP Building No. 10 130XX Gateway Drive (L93 -0010, 0011 and 0012) 4. Segale Retail 62XX South 180th Street (PRE 93 -014) JP Environmental, Design and Shoreline Development Reviews (Brought back from last week) Building square footage does not agree between plans and environmental check- list. The name of Cameron Drive has been requested to be changed. R/W requirements and proposed dedication needs to be verified by Ron. Normal dedication required for local access road is 50' wide. Sidewalks are required on both sides of Cameron Drive and also along north property line to the trail /dike easement as previously indicated at the pre -app. meeting. Commercial driveways are to be a maximum of 35' in width. A bank stabilization study is required as previously requested. Traffic analysis has not yet been provided. Water and sewer lines should be relocated to Cameron Drive. A water main extension here would provide a public loop system. Also relocate fire hydrants and water meter. Biofiltration has not been provided. Existing storm system, including pump station, needs to be evaluated for adequacy. Catch basin, upstream of storm outfall, needs to have oil /water separator. Water service to the building should be off Cameron Drive (new water main). Maintenance respon- sibilities for pump station need to be clarified. • City would prefer developer to do this. Levee elevation needs to be looked at to see if it meets minimum freeboard requirement of 2 feet above the standard project flood. With no levee, buildings will need to be 2 feet above the standard project flood. Sidewalk link to BECU? Traffic mitiga- tions are referred to Ron. Pre - Application Review South 180th Street is classified minor arterial through this area. of R/W is available. It appears as a 72' that Segale Drive is a private road according to assessor's maps. Should this road be made public? If so, it would provide Trre A" c Arm- Mounted Rectilinear Cutoff Lighting ® Wet Location Use for car lots, street lighting, tennis courts ORDERING SEQUENCE CATALOG NUMBER CATALOG NUMBER High Pressure Sodium Metal Halide 70 KAS1 70S R2 100 KAS1 100S R2 150 KAS1 150S R2 200 KAS1 200S R2 250 KAS2 250S R2 400 KAS2 40DS R2 175 KAS1 175M R2 250 KAS1 250M R2 400 KAS2 400M R2 (10 100 KAS1 100H R2 Mercury 175 KAS1 175H R2 I OM i■1 7yr1j:111: ii:t..t'a7 1.1i11;), Vapor 250 KAS1 250H R2 h!ultry: ?itjlillijiilit►t ri`:)r)tiiui ?J,: 400 KAS1 40DH R2 • :7ai;til{)t: tt ii1 TO l 'Jitlihitr;r;.3D/ MC ijfis'r ::?cOillit:.. ; ;i0. ;?.. 411,/ • +ili:(BtJ,rE 4:41.!tlrrii(F tl!IPrriuli:T 't :,119: ?S:•∎49 15Il:t!► }.';; <irit!,:!il l'3 1inii�,n jI ; jrrrr tr;r r' jkF.)ryrall .,uliu)l■r,j,k):1r,e!)t ;)t.:1 !'fii►,. It.), j:1.ii.flf +1117Itt:), (, +:i9i: •)1.11 l.lr1.t :71iit +1001)1);Ir ;1 1itao.ilti. 1:1rl1is • Il,•Ulslili}. ti. >flia AtIfitli: :ut.tl,lfe!irn1111 :'' rtr ':ut!�Jjrrli:,lr ialilr?► +.y .19;1) .111: , .111;111111t119 !hi ht.-m3119 C.Iii 11;;;Ii):tt^0:1P. t /03lit p�lliti r:,lrtilrlrtt "r;l'ft:l7rr): rt�!a . tei' t:+e t;lr;�,)f.:lllt)lli]fg. i irli) t•lil:li�:i.1:1101(.lrt 41eil ?fir ralarir?: {I ot)10+)p:]rir; 1r: ?')rtiij,,,► ir.il':, t`or.:rr.tirt • .l + ;,(•3! tpnrl3; • TYPE III DISTRIBUTION High Pressure Sodium 70 KAS1 70S R3 100 KAS1 100S R3 150 KAS1 150S R3 200 KAS1 200S R3 250 KAS2 250S R3 400 KAS2 400S R3 1000 KAS3 1000S R3 175 KAS1 175M R3 Metal 250 KAS1 250M R3 Halide 400 KAS2 400M R3 1000 KAS3 1000M R3 Mercury Vapor 100 KAS1 100H R3 175 KAS1 175H R3 250 KAS1 250H R3 400 KAS2 40011 F3 1000 KAS3 1000H R3 High Pressure Sodium TYPE IV DISTRIBUTION 70 KAS1 70S R4 100 KAS1 100S R4 150 KAS1 150S R4 200 KAS1 20DS R4 250 KAS2 250S R4 400 KAS2 400S R4 1000 KAS3 1000S R4 Metal Halide Mercury Vapor 175 KAS1 175M R4 250 KAS1 250M R4 400 KAS2 400M R4. 1000 KAS3 1000M R4 100 KAS1 100H R4 175 KAS1 175H R4 250 KAS1 250H R4 400 KAS2 400H R4 1000 KAS3 100011 R4 TYPE V Square DISTRIBUTION Hir 250 KAS3 250S R5S Pre re 400 KAS3 400S R5S Sodi 1000 KAS3 100DS R5S Metal Halide 400 KAS3 400M R5S firrE A *Gs tat se' [ APR 5 1993 COMMUNITY DEVELOPMENT fAt ARCHITECTURAL OUTDOOR () • i1 �� dil l.Hood • "NM— " al. PIG= ielliOr Twin Beam, 70/250W HID, ® Wet Locations Use for car lots, security areas or signs. ORDERING SEQUENCE �i,i! +liuisl:•:Iali.,,,� }� •.t:i. +ol,: iti(,!o:;itt: • ai�S';:�ri si: _it;.fi- 4(airJ, tar:: ?.1, +1i:: -� •. ` i •7h�ili_,'::(i;,t:lt• ?t�,l <i�ii ; +:{it,�!. ;ttri3 iip)t• irri.'(1.0 _iat °i + r.,tc)A 1tJ4 +11{ !{i;i�:lrly•:!jt)f: {: . iii +t 1�tia ><liv►���it:;!�;t Y)1' +!itlt {;lttlrlti!It1tt• ;,it�i'tii:c it','i: ,; :It;�i[�1 : ;iglit:ri,i. tt'i( -'+ ✓�+Ir1':i7' xCit:.lOs>,:;;+t�l.,., ,11•et,::1!I,Fu1J +t :1111 ►JJ- • 11 ++, ' :: t (iItii_,.1iit: tiJ+lrtt:llif,t;,ttfl. • 11.��� IJL4.1: �i�tJii;• ' isr6l•;: jylit llut!1:l,iNl�ti��yal+:ilhlei(. 11.tz: ;iII(;11.,i • i��h�:1iil, .i X1,19.1 :4 :• 'd(!11!I(i:0■:. t11p1{ 1J i; • '1;f..i 'i • Y .41.1161,0!), (lu:: {fed +irl• r / i ;l':::lit +i 1t,11•1 tt llCliy:ll,�il,i•S+17i►�1ti1, - • :fi�a et('(+ttlgt j'( +!:l: t! 1[I,7t4d01- -i(l;: +1il1;. li;{'J? A:fill tiiiipl (:140(rIttl)%i-'i:t1t• t:iti. :11 1.(i ; :hi l i :)a u i f It :!.tr'.A 1(1'5. ;. I t t41lut t1!J. l.:141itiKarl!i l.7.05:1 f:j4fi(!ji II. l.11}::1•4.t!ta:(:1 i'iiiI. ,(:<�il,! i i l,(1 +�•f11ia:(1�Qkt.(::4 1,1(:11' IrtiG� ;aii4Att'I11tot'411,ajtlt-.r . trt(.1■ • ICATALOG NUMBER 11 VOLTAGE I I OPTIONS 120' 208 240 277' 480 TB2 High Pressure Sodium 70 TFL TOS TA2 70 TFL 70S T82 100 TFL 100S TA2 100 TFL 100S TB2 150 TFL 150S TA2* 150 TFL 150S T82' 200 TFL 200S TA2 200 TFL 200S TB2 Metal Halide 175 TFL 175M TA2 175 TFL 175M T82 250 TFL 250M TA2 250 TFL 250M TB2 Mercury Vapor 100 TFL 100H TA2 100 TFL 100H TB2 175 TFL 17511 TA2 175 TFL 175H T82 250 TFL 25011 TA2 250 TFL 250H TB2 • Uses 55V Tamp std. 100V available - specify on order. ADDITIONAL INFORMATION Weight Beam Spread Wattage • Ballast Lbs. Kg. H' x V° High Pressure Sodium - Mog/Ctear 22 10 22 10 23 10 70 TA2 70 TB2 100 TA2 100 782 150 TA2 HX -HPF 150 782 200 TA2 200 TB2 23 25 25 26 26 Metal Halide - Mog/Clear 175 TA2 25 175 TB2 CWA 25 250 TA2 26 250 TB2 26 Mercury Vapor - Mop /Coated 100 TA2 20 100 TB2 175 TA2 175 TB2 250 TA2 250 TB2 20 CWA 22 22 23 23 10 11 11 12 12 147 X 113 137 X 101 148X119 128 X 100 154 X 112 136 X 101 149 X 120 137X109 Shipped Installed In Fixture SF Single Fuse (120/277V) n/aTB OF Double Fuse (208240,480) n/a TB ORS Quartz Restrike System (lamp not included) ORSTD ORS Time Delay (lamp not included) PER NEMA Twist -Lock Photoelectric Receptacle IS Integral Sllpfitter (2 3/8' to 2 7/8' 0D tenon) LS Lamp Support -70F Reduced Ambient Operation ( -70 °F) C62 2' of 16 -3 SEO Cord Pre -Wired Cat 2' of 14-3 SEO Cord Pre -Wired C22 2' of 12 -3 SE0 Cord Pre-Wired DC Architectural Colors - Specify Letter Codes CR Corrosion- Resistant Finish (polyester) CRT Corrosion - Resistant Finish (teflon) CF Charcoal Filter EY 'Extended Yoke Shipped Separately' WG Wire Guard VG Vandal Guard (polycarbonate shield) UV Upper Visor FV Full Visor (upper 8 side) TS Tenon Slipfitter (2 3/8' to 2 7/8' 00 tenon) CRA Cross Arm Adaptor (horizontal) CRA45 Cross Arm Adaptor (45° from horizontal) PWB Wood Pole/Wall Mounting Bracket (incl. CRA) PMB Pipe Mounting Bracket (includes CRA) WPB Wall Pipe Bracket PEI NEMA Twist Lock Photocontrol (120,208,240V) PE4 NEMA Twist Lock Photocontrol 480V PE7 NEMA Twist Lock Photocontrol 277V ACCESSORIES (Field Installed) 11 145 x 111 Ordered Separately. 11 128 x 101 See Flood Options Section. 12 . 145 x 120 12 132 x 111 9 9 10 10 10 10 140 x 117 126 x 106 143 x 129 137 x 129 146 x 131 138 x 122 EPA = 1.3 ft} H = 15 7/i (40.3) W = 15'/2' (39.4 cm) 0 = 6'/2' (16.5 cm) NOTES: ' 150W and below provided with dual tap (120/ 277V) ballast when ordered as 120V or 277V. Multi -tap Ballast (120,208,240,277V). May be ordered as accessory. MUST see Flood Accessories Section for ordering information. Mr fA aoa��ry 'fYP� 'E' - DDIN)41.16;421- RECESSED ROUND: 100 and 175 WATT MEDIUM B TALHALID Inconspicuous - 68% Efficiency 4. 14,000 Lumens - 64% Efflclency 66% Efficiency Optional Reflector Colors 1 Champagne Gold Alzak Option -16 Black Alzak Option -72 .4 1 Umber Alzak Pewter Alzak Option -92 Option -93 Performance at a G RR50605, RR50606 1-- 11.71• Sq,rn -, 0 10.11 • oli a= 1 I I e • o,.. -11 6.15ne• DY. Metric: Inches x 25.4 a Millimeters. RR50707 11.7, u a LOS14.51 • ,1j II. RR50605 RR50606 RR50707 AMMO Ellipsoidal ' own ights: High Efficiency Features Lamp • 100 watt clear E/ED -17 for RR50605. • 175 watt clear E/ED -17 for RR50606, RR50707. • See Option -43 for optional lower wattage. • Option -23 for Mercury, Option -24 for HPS. Socket • Vertical. Medium base. Pulse rated: RR50605. • Glazed porcelain. • Nickel - plated brass screw shell. Silicone leads. Reflectors • Upper: Compound ellipsoidal specular Alzak• aluminum. • Lower: Low brightness parabolic specular Alzak aluminum, self - flanged. Lens • UV absorbing tempered Industrix mounted to upper reflector. • Optional UV absorbing tempered prismatic amass (Option -15). i Seamless Black OptiGroove Option -OG 1300 2600 3900 0° 15' Ballast Assembly • WhisperPack' fully encapsulated 180° C rated HPF ballast. • Premium Class H high reactance; 5:12 regulation (100 watt) or CWA 10:10 regulation (175 watt). • Capacitor (and ignitor for 100 watt) supplied. • 120 volt standard or see optional voltages. • Cool, quiet, long -life. Silicone leads. • Visible and easily serviced in all ceilings including dry wall. 30 90' 75' 60' 45' RR50605 S/MH 1.0 RR50605 -15 S/MH 1.0 3000 6000 9000 0' 15• 30• L7•ta . tx4.� - RR50707 SIMH 1.0 sysD,, - RR50707 -15 SJMH 1.1 • Da. (n ft.) shown Is where FC value is half the FC at nadir. " Based on RCR2; ceiling 70 %; wall 50 %; floor 20 %. Use S/MH shown for each fixture. 90' 75• Fuse • Fused primary. Renewable. Aids servicing. Housing • Acrylic enameled aluminum. • Cool: Dissipates heat across entire surface area. • Rustproof: Exceeds 1000 hour ASTM 5% salt spray test. • Entire luminaire serviced through removable reflector. • Built -in plaster frame. Outlet Box • Prewired 14 GA (NEC) galvanized steel, UL listed. • Removable insulated cover. • 1 /2' and 3/; knockouts. Installation • 27' galvanized channel bar hangers supplied (2). • Fully adjustable universal mounting brackets supplied (2). • Recesses indoor or outdoor in covered locations. UL Listing • Wet, damp, or dry locations, covered ceilings. • Through- branch circuit conductors (6 #12). Three Year Limited Warranty • Complete standard fixture. Thermal Protection • Per current NEC. Cone of Light• Cone of Light* O O FL FC 01a. 8 108.1 5.7 8 80.8 7.8 10 38.9 9.5 12 27.0 11.4 14 19.9 13.3 18 15.2 15.1 RR50605 R. FC Dia. 6 101.4 5.7 8 57.0 7.6 10 36.5 9.5 12 25.3 11.4 14 18.6 13.3 16 14.3 15.2 RR50605-15 O O Ft. FC 01a. 60' 8 232.9 5.8 8 131.0 7.8 10 83.8 9.7 12 58.2 11.7 14 42.8 13.6 18 32.7 15.6 RR50707 45• FL FC D1a. 6 206.4 6.1 8 116.1 8.2 10 74.3 10.2 12 51.8 12.3 14 37.9 14.3 16 29.0 16.4 RR50707 -15 For Plan View, see page 7 Detailed Photometric Data begins on page 52. Options -15 UV absorbing tempered prismatic flat glass. Spread distribution. -16 Champagne Gold anodized Alzak lower reflector, self - flanged. (CP x .95) -23 Mercury ballast instead. 100ME standard or see Option -43. Specify voltage. -24 HPS ballast instead. 100ME (RR50605) or 150ME (RR50606, RR50707) standard or see Option -43. Specify voltage. -31 White rellector flange. -43 Lower wattage medium base - specify voltage and wattage tor: Metal Halide: 70.50.32 (GE Halarc" electronic ballast - minimum 50' F) (RR50605) or 150, 100 (RR50606, RR50707); ' CP Distribution 90' 23oo \ ; 75' R. `\ 60' a 4800 i; 10 45' 12 8900 .+�. 14 0' 15' 30' 18 RR50606 SIMH 1.0 RR50606-15 S/MH 1.1 Cone of Light* Cone of Light• O Cone of Light Key FL Mounting height FC Footcandles 01a. Circle of light at 50% of FC Estimated Color Multipliers: Sae Options -16, -72, -92, -93 and -0G. Mercury: 75, 50; HPS: 70, 50, 35 (RR50605) or 100 (RR50606, RR50707). -45 Gasket above rellector flange. Stops dust streaks on ceiling. -49 Extra circuit DCB socket. (100 watt max.) Must not be energized simultaneously with main source. -58 277 volt 60 Hz. ballast instead. -65 Relay and DCB socket, (100 watt max.) With fixture energized, provides immediate light during HID outage. Also see Option -66. -66 Time delay relay and DCB socket. (100 watt max.) When energized, provides light until HID reaches 70% output. -72 Black anodized Alzak lower reflector, self - flanged. (CP x .67) FC 01a. 199.1 5.7 111.4 7.5 71.3 9.4 49.5 11.3 36.4 132 27.9 15.1 RR50606 Ft. FC Ole. 6 143.1 6,9 8 80.5 9.2 10 51.5 11.5 12 35.8 13.8 14 26.3 16.1 16 20.1 18.4 RR50608 -15 Multiple Fixture PC Calcuta or" 11111.11 MIll .1111•11•111111•111•11 101110011111111111111111111 \'�� \11111111■ 10111►\ \1.11.1.11•■ �75■1111■ minommihmlummm mommhzimmili- ■11111IMIQ nmm •111•1•11111 • 00 100 140 100 -• ' 260 Arse Per Fixture In Squat* F n RR50605 RR50606 ....RR50707 -92 Umber anodized Alzak lower reflector, self - flanged. (CP x .75) -93 Pewter anodized Alzak lower reflector, self - flanged. (CP x .90) -94 Custom color lower reflector. Consult factory. -97 Other voltage ballasts. Consult factory. -99 Special modification. Consult factory. -LP With lamp. Specify source, wattage, color temperature, and clear or coated (32001( standard for MH.) Consult factory for other color temperatures. -OG OptiGroove black seamless tapered aluminum. White trim, self - flanged. (CP x .72) Alzak* is a registered trademark of ALCOA. �- ,��� w J 0 2 W0 cn W CC MOUNTING 20' POLE 30' POLE ARM MOUNTED CAD 20' 20' POLE RECESS SOFFIT DOWN LIGHT 1 g 250 WATT METAL HALIDE 400 WATT METAL HALIDE 250 WATT METAL HALIDE 250 WATT FLOOD LIGHT 150 WATT METAL HALIDE X SYMBOL T : l' T -(›- FIXTURE 00000 Geo„,,. Engineers M.A. Segale, Inc. P.O. Box 88050 Tukwila, Washington 98138 Attention: Mr. Dana Warren : November 30, 1992 ^ �4:.2 7� 1 8 V 1:.,93 Geotechnical, Geoenvironmental and Geologic Services Interim Evaluation and Recommendations Strander Boulevard Property Tukwila, Washington File No. 0171 -025 -R02 INTRODUCTION This letter summarizes our evaluation of settlement and surcharge data regarding your Strander Boulevard property in Tukwila. We also present recommendations for modifying the preload fill configuration to accommodate a revised building outline and recommended geotechnical parameters for design of foundations for the structure proposed at the site. The discussion herein confirms our previous verbal discussion and preliminary recommendations given to you for this project. Our services are performed in accordance with a confirming agreement dated October 26, 1992. SITE CONDITIONS The Strander Boulevard property is located on the southeast corner of the intersection of Strander Boulevard and Andover Park West in the Southcenter area of Tukwila. The property is located in an area of fairly old engineered fill placed during nearby commercial land development. In August 1991, M. A. Segale, Inc. placed a preload fill over a portion of the site. The height of the preload fill ranges from about 11 to 15 feet above the adjacent site grades. The lateral limits of the preload fill conform to a specific building layout. Since 1991, plans have changed to a building with a slightly different layout. Portions of the new building footprint are outside the area of the existing preload fill. As part of our evaluation, we reviewed geotechnical data in our files from the development of an adjacent site immediately to the west of the Strander property. This data consists of test GeoEngineers, Inc. 8410 154th Avenue N.E. Redmond, WA 98052 Telephone (206) 861 -6000 fax (206) 861 -6050 ;:;Printed ao recycled'papat,.!:; M.A. Segale, Inc. November 30, 1992 Page 2 borings that describe the subsurface soil stratigraphy and laboratory test data that describe the geotechnical characteristics of the subsurface soils. It is our opinion that the subsurface conditions at the Strander Boulevard property are likely to be similar to those at the adjacent site. Our evaluation is based on the following subsurface conditions: The older engineered fill is about 14 feet thick and is relatively incompressible. This material should experience only minor or negligible settlement from new surcharge loads such as fills or structures. That settlement, if any, will be rapid and should occur during new fill placement or building construction. The older fill is underlain by highly compressible organic silt and sandy silt that extends to a depth of approximately 35 feet below the existing ground surface. This roughly 21- foot -thick layer will consolidate (compress) slowly under new surcharge loads such as fills or structures. This layer is referred to as the Upper Compressible Soil Layer in this letter. Below the organic silt is a 37- foot -thick layer of silty sand that is relatively incompressible. This material should experience only minor or negligible settlement from new surcharge loads such as fills or structures, and any settlement will occur rapidly. The silty sand is underlain by a layer of moderately compressible silt and sandy silt that extends from about 72 to 107 feet below the ground surface. This roughly 35- foot -thick layer will consolidate slowly under new surcharge loads such as fills or structures. This layer is referred to as the Lower Compressible Soil Layer in this letter. The silt is underlain by sand and silty sand that is relatively incompressible. EVALUATION OF SETTLEMENT DATA Settlement monuments were installed with the preload fill in 1991 and have been read intermittently since installation. The settlement data was provided to us by M. A. Segale, Inc. Our evaluation of the site conditions resulting from the existing preload fill are as follows: • The upper compressible soil layer has reached nearly 100 percent of the expected total consolidation due to the influence of the preload fill. • The lower compressible soil layer has reached approximately 65 percent of the expected total consolidation due to the influence of the preload fill. We compared the internal soil pressures resulting from the preload fill with those pressures that will result from the building proposed for the site. We assumed that the structure will be designed using the allowable bearing pressures given below. We assumed continuous exterior strip footings, interior isolated columns spaced at about 30 feet center -to- center, and a uniform slab -on -grade load of 200 psf (pounds per square foot). On this basis, it is our opinion that the site has been sufficiently surcharged below the footprint of the existing preload fill to accommodate the proposed building with little additional settlement from the compressible soil layers. G e o E n g i n e e r s File No. 0171 -025 -R02 M.A. Segale, Inc. ( November 30, 1992 Page 3 RECOMMENDATIONS FOR MODIFYING THE PRELOAD FILL CONFIGURATION The currently proposed building will cover a different footprint area than the area that has been surcharged by the existing preload. Therefore, the preload fill must be reconfigured to accommodate the areas of the building that will lie outside the influence area of the existing preload. We recommend that the preload fill be reconfigured as follows: • The reconfigured preload should be at least as thick as the existing preload fill. • The lateral limits of the top of the reconfigured preload fill should extend at least 5 feet outside of the lateral limits of the proposed building footprint, where possible. • The preload fill should slope down at an inclination of about 2H:1V (horizontal to vertical). • The new preload fill should be monitored with settlement monuments. Readings should be taken about monthly through the duration of the preloading. We expect that three additional settlement monuments will be sufficient to monitor the areas of new preload fill. We understand that the reconfigured preload fill may have to be truncated where the new building is close to property lines. We have reviewed this condition, and it is our opinion that the local narrowing of the width of the preload fill will not significantly effect the results of the preloading program. FOUNDATION RECOMMENDATIONS FOOTING DESIGN We recommend that the proposed structure be supported oilconventional spread footings. We recommend continuous wall footings be a minimum of 18 inches wide and isolated column footings be a minimum of 24 inches wide. Exterior footings should be founded at least 18 inches below the lowest adjacent finished grade. Interior footings should be founded a minimum of 12 inches below lowest adjacent soil grade. Footings can be designed for an allowable bearing capacity of 4,000 psf. This bearing capacity is for the combination of dead and long -term live loads, and may be increased by up to one -third to account for short-term live loads such as wind or seismic forces. FOUNDATION SETTLEMENT We estimate that the total postconstruction settlement of structures supported on footings designed according to these recommendations could range from about 1 to 1 inch. Maximum differential settlements should be less than 1 inch, measured along 25 feet of continuous wall footing or between adjacent comparably loaded isolated footings. We expect that these settlements will tend to occur rapidly after the loads are applied. Loose or disturbed soils not removed from the footing excavations prior to placing concrete will result in increased settlement. Any soft or loose material encountered or created in the G e o E n g i n e e r s File No. 0171- 025 -R02 M.A. Segale, Inc. November 30, 1992 Page 4 footing excavations must be repaired. Repairs can consist of recompacting the material, if the soil moisture content is appropriate, or removal and replacement with suitable structural fill. The depth of removal should be determined by a representative of GeoEngineers. Structural fill should consist of sand and gravel, or crushed rock, that contains less than five percent material passing a No. 200 sieve. LATERAL LOAD CAPACITY Lateral loads can be resisted by a combination of friction between foundation concrete and the supporting soil, and by the passive lateral resistance of the soil surrounding the embedded portions of the foundations. A coefficient of friction between concrete and soil of 0.35 and a passive lateral resistance corresponding to an equivalent fluid density of 300 pcf (pounds per cubic foot) may be used for design. The friction coefficient and passive lateral resistance are allowable values, and incorporate factors of safety . of approximately 1.5. If soils adjacent to foundations are disturbed during construction, the disturbed soils must be recompacted, otherwise the lateral passive resistance value must be reduced. • O ► We appreciate being given the opportunity to provide services on this project. If you have questions or wish to discuss this information, please call. EXPIRES 1/23/9'1 TAT:7WK:nlm Document ID: 0171025.L1 Two copies submitted Yours very truly, GeoEngineers, Inc. "—TL-w-zet) Thomas A. Tobin, P.E. Geotechnical Engineer ?-fJon W. Koloski Principal G e o E n g i n e e r s File No. 0171 -025 -R02 TRAFFIC IMPACT ANALYSIS SEGALE RETAIL SITE TUKWILA, WASHINGTON January 1992 Prepared for: Segale Business Park DAVID I. HAMLIN AND ASSOCIATES 1319 DEXTER AVENUE NORTH - SUITE 270 SEATTLE, WASHINGTON 98109 (206) 285-9035 VAR 8 '1.393 cc TRAFFIC IMPACT ANALYSIS SEGALE RETAIL SITE TUKWILA, WASHINGTON I. INTRODUCTION A) General The information which follows is intended to address the anticipated transportation impacts resulting from the development of the Segale Retail Site. The site is located on the southeast corner of the intersection of Strander Boulevard and Andover Park West in the City of Tukwila. The purpose of this report is to review and analyze current conditions in the vicinity of the site, review the proposed development and the impacts to the transportation system, and develop the appropriate mitigation as necessary. B) Project Description The proposed project is for the development of approximately 9 acres into 108,690 square feet of retail space by Segale Business Park. The parcel is currently zoned "C -2 ". As noted earlier, the site is located on the southeast corner of the intersection of Strander Boulevard and Andover Park West, diagonally southeast of Southcenter Mall. Access to the site is proposed from both Andover Park West and Strander Boulevard. The driveways are located as far from Strander Blvd. /Andover Park West as possible (500 -600 feet) in order limit the site's impact on the operation of the intersection. The truck loading access on the southern property line will partially align with Treck Drive, if extended. The building structure will be located near the southerly and easterly property lines, with customer parking on the street -side of the site. The subject property is currently an undeveloped site which has been cleared and has some fill material stored on it. A vicinity map of the area is shown on Figure 1. The remainder of this report will analyze the effects of the development of the subject property and the traffic - related impacts which can be expected on the adjacent intersections. Three intersections have been identified by the City of Tukwila for review with respect to level of service. A reduced copy of the site plan is shown in the Appendix. S 150TH ST I MOTT S 152ND ST 3U IT It__ 1111ST S 1S30 S SETH ST SOUTHCENTEe SHOPPING MALL STRAND R EVAN, MACK OR I.0111 litY0 PROJ CT 1;',Irsli72Ta 175THIFT/il SISOTH ST SPRINGBROOK GREENBELT RISCO DER S 190TH S 190TH ST 11,1.111 S 192N0 S S 1S4TH ST PROJECT VICINITY MAP FIGURE 1 2 I1. EXISTING CONDITIONS A) Adjacent Transportation System Andover -Park West is a four lane north -south arterial with- curb, gutter, and street lights, and sidewalk along most sections of the roadway. Left -turn storage lanes have been installed on Andover Park West at Tukwila Parkway and Baker Boulevard. Andover Park West is fronted by a mix of retail, office and warehouse /light industrial uses. The posted speed is 35 mph. Strander Boulevard is a multi -lane east -west arterial connecting Southcenter Parkway with West Valley Highway. Strander Boulevard includes a two -way left -turn lane between Southcenter Parkway and Andover Park West. East of Andover Park West the street is striped for four lanes, although left -turn storage lanes have been provided at Andover Park West, Andover Park East,, and West Valley highway. Curb, gutter, and street lights have been installed along the entire length of the street, but sidewalk exists only between Southcenter Parkway and Andover Park West. The street is fronted by a variety of commercial developments and has a posted speed of 35 mph. Southcenter Parkway is a multi -lane arterial bordering the north and west sides of Southcenter Mall. The street is striped for four lanes and includes turn storage lanes along , the mall frontage. Raised curb has also been installed in this area. Traffic signals control many of the mall entrances and the ramps to I -5. South of Strander Boulevard, Southcenter Parkway is striped for two southbound lanes, a center two -way left -turn lane and three northbound lanes along a portion of the street. B) Traffic Volumes Daily traffic counts in the vicinity of the proposed project were available from the City of Tukwila. The traffic volumes for the year 1991 were the most current values available at the writing of this report. Those volumes are shown on Figure 2. A discussion with City staff indicated that the traffic volumes in the immediate vicinity have increased by very small amounts over the past couple of years. A manual traffic count for the noon and PM peak hours was conducted for this study at the intersections of: - Strander Boulevard /Southcenter Parkway - Strander Boulevard /Andover Park West - Strander Boulevard /West Valley Highway New counts were conducted for these locations so that any 3 1 -5 kolow I r PROJECT SITE SOURCE: 1991 CITY OF TUKWILA TRAFFIC FLOW MAP 13400 1 -5 LLi 0 Z N lD 11 vs • e TUKWILA PKWY. G`</�� e9 1347oo \ 16800 29.00 STRANDER BLVD. 19500 ANDOVER PARK W TRECK DR 22100 94,00 1 S. 180TH ST. 20400 ANDOVER PARK E. NORTH Li co (41 600 32700 1 -405 27400 w 31900 32600 CURRENT AVERAGE DAILY TRAFFIC VOLUMES FIGURE 2 4 additional traffic resulting from the recent expansion of Southcenter Mall and the Spieker Partners development would be included in the volumes. Additionally, the counts would reflect the higher traffic volumes present in retail areas during the Christmas shopping season since the - counts, were conducted during the month of December. The tabulation of these counts can be found in the Appendix. (3) Transit /Pedestrian Facilities Transit service is readily available in the Southcenter area. METRO routes 39, 124, 240, and 340 travel along Strander Boulevard past the site and route 150 travels on Andover Park West past the site. These routes travel to a variety of areas including downtown Seattle, Renton, Auburn, Kent, Bellevue and Sea -Tac Airport. Frequency of service varies with the different routes, although service is generally available throughout much of the day. Service on other routes is also available from Southcenter Mall. Pedestrian facilities (sidewalks) have been installed along many street sections in the vicinity of the site. The City of Tukwila is trying to encourage pedestrian activity in order to eliminate some of the automobile trips in the area. The site of the proposed development currently does not have sidewalk, although sidewalks have been installed on Andover Park West to the south and on the west side of the street and along most of the south and east frontages of Southcenter Mall. Sidewalk does not exist along Strander Boulevard to the east of the site. Pedestrians in this area are forced to walk through parking lots or landscaped areas. Pedestrian signals, push- buttons, and crosswalks are typically found at the signalized intersections. D) Level of Service Three intersections in the area which would be critically impacted by development of the subject site were recommended for analysis by the City of Tukwila with respect to level of service. These locations include Strander Boulevard/ Southcenter Parkway, Strander Boulevard /Andover Park West, and Strander Boulevard /West Valley Highway. "Level of service" is a common term used in the Traffic Engineering profession which is defined as a qualitative measure describing operational conditions within a traffic stream, and its perception by motorists and /or passengers. These conditions are usually described in terms of such factors as speed and travel time, freedom to maneuver, traffic interruptions, comfort and convenience, and safety. Six levels of service are designated, ranging from A to F, with level of service "A" representing the best operating 5 conditions and level of service "F" the worst. The first step in the capacity analysis of an existing intersection is to manually count all traffic movements during the critical peak -hour period(s). A manual . traffic count was conducted for both the noon and- - PM • peak hours-at--- the intersections as part of this analysis. (The City of Tukwila had indicated that the noon peak hour is higher than the traditional afternoon peak hour and therefore should be included in the analyses.) The intersection is then analyzed, taking into account all of the physical features and methods of traffic control. This process produces a rating for the intersection that defines a "level -of- service" for each vehicle. An expanded explanation of "level of service ", along with the tables which identify the criteria for analyzing unsignalized and signalized intersections respectively, as presented in the Highway Capacity Manual, has been provided in the Appendix. The actual capacity of an intersection is generally considered to be at the lower end of level of service "E" and most agencies strive to maintain a roadway network that will not drop below this level of operation, except perhaps during unusual periods such as holiday shopping, sporting events, etc. Calculations for the level of service for the intersections were conducted using the computer program CAPCALC '85, by Roger Creighton and Associates, Inc., which is based on the 1985 Highway Capacity Manual, Special Report 209. The manual traffic counts described earlier were used in these analyses and are shown in the Appendix. The following tables show the current levels of service for the intersections. TABLE 1 EXISTING LEVELS OF SERVICE LOCATION Strander Blvd./ Southcenter Pkwy. Strander Blvd./ Andover Park West Strander Blvd./ West Valley Highway PEAK HOUR NOON PM NOON PM NOON PM LEVEL OF SERVICE (DELAY) D ( 29 sec.) C ( 23 sec.) D ( 48 sec.) D ( 33 sec.) D ( 33 sec.) D ( 28 sec.) It can be seen from Table 1 that the intersections are all operating under capacity (level of service "E" or higher). 6 The seconds of delay shown in Table 1 is the average delay for the intersection movements overall. Individual critical movements may by operating at a lower level of service. For example, the westbound left -turn movement at Strander Boulevard /Southcenter Parkway was calculated as level of, , service "F", however other movements were at level-of•••service.. _ "B ", therefore averaging out to an overall' level of service "D" during the noon peak hour. The intersection of Strander Boulevard /Andover Park West is operating at level of service "E" during the noon peak hour primarily due to the lack of left -turn storage lanes in the north /south directions. Strander Boulevard /West Valley Highway is operating at level of service "D ", although it is believed that it could operate at a slightly better level of service if the cycle length were shortened by 60 seconds or so. The computer printouts of the capacity analyses are include in the Appendix. • III. FUTURE NON - PROJECT CONDITIONS The Southcenter area will continue to see growth, although not at the high rate experienced in other lesser developed commercial areas. Discussions with 'City staff indicated that traffic volumes entering the Southcenter area in general are fairly stable, increasing only slightly over the past couple of years. As noted earlier, the noon peak hour typically represents the highest traffic volumes on the weekdays in the Southcenter area and not the PM peak hour as is typical in most locations. In general, most of the arterials in the Southcenter area are multi -lane facilities constructed to urban standards, i.e., curb, gutter, sidewalk, and street lights. Some streets do not yet include pedestrian facilities and it is the intent of the City to continue to encourage the installation of sidewalks as properties develop or re- develop. Capital improvement projects to add lanes and make operational improvements are planned by the City throughout the area. Those which would impact the proposed project include the widening of Andover Park West and Strander Boulevard (east of Andover Park West) to include a center turn lane. Other major projects would include improvements at S. 180th Street/ West Valley Highway and in the Interurban Avenue /I -405 area. Fiscal participation by property owners in the area is expected to help fund these projects. 8 .. � . �.. IV. EXPECTED DEVELOPMENT IMPACTS A) General The development of the subject site will generate-new :traffic-. onto the adjacent local and regional transportation network. The remainder of this report will identify and evaluate the impacts resulting from the increase in traffic associated with the proposed retail site. B) Proposed Action 1. Trip Generation The development of the subject site will generate additional traffic onto the adjacent transportation system. The ITE Trip Generation Manual (published by the Institute of Transportation Engineers, 5th Edition, 1991) has been used to estimate the number of trips which can theoretically be expected to be generated by a development of this type. ITE Land Use Code 820, Shopping Center, was chosen as the appropriate trip rate to be used for this development. Table 2 shows the number of trips expected to be generated by the site using the regression equations. TABLE 2 TRIP GENERATION SEGALE RETAIL SITE TIME PERIOD TOTAL TRIPS Daily 7445 AM Peak Enter 108 Exit 63 Total 171 PM Peak Enter 346 Exit 346 Total 692 Noon Peak Enter 381* Exit 381* Total 762* * Estimated as 10% higher than PM peak hour based on comments from City of Tukwila Staff and information provided in the traffic impact analysis for the Southcenter Mall Expansion. Table 2 shows the total number of trips which could be expected to enter and exit the site, i.e., the driveway volumes. However, the traffic associated with "strip” commercial sites are actually composed of three components, 9 pass -by, diverted, and new trips. The ITE Trip Generation Manual recognizes the fact that not all trips generated by a retail center site are new (primary trips) to the adjacent transportation system, but also attracts a certain percentage which is already in the traffic stream passing the site. Thus, even though the trip generation_:rates._ quantify the number of trips to the site at the driveways, it is also necessary to recognize the "pass -by" and diverted trips and deduct them from the site trips when determining the impacts on the adjacent street system. The percentage of pass -by trips is proportional to the shopping center size. Generally the smaller centers have a higher percentage of pass -by trips than the larger regional shopping centers due to their orientation towards convenience stores. The following equation has been presented in the ITE Trip Generation Manual (page I -23) to determine the percentage of pass -by trips: LN (PASS -BY TRIP %) = -0.341 LN(X) + 5.376 Where X is 1000 sq. ft. GLA (gross leasable area) Thus, for the proposed site the percent of pass -by trips would be the following: LN (PASS -BY TRIP %) = -0.341 LN(108.69) + 5.376 LN (PASS -BY TRIP %) = 3.777 (PASS -BY TRIP %) = 44% (PM peak hour; non -PM peak hour is 10% less) In other words, approximately 60 -70% of the trips estimated to be generated by the shopping center will actually be new trips to the adjacent street system and some of these would likely be diverted from destinations in the same area. This pass -by value has been compared to survey results found in the Trip Generation Manual for similar sized centers whose pass -by rate was found to average 39 %. Thus, for the purposes of this study, a pass -by rate of 40% will be used for the PM peak hour and 30% for all other time periods. The percent of diverted trips has been estimated as 20% of the total trips. Whereas Table 2 shows the total trips which will enter and exit the driveways serving the site, Table 3 shows the net impact to the adjacent street system, less the percent of retail trips which can be considered as pass -by and diverted trips. 10 TABLE 3 SUMMARY OF TRIP GENERATION FOR PASS -BY, DIVERTED, AND NEW TRIPS SEGALE RETAIL SITE Daily AM Peak Enter Exit Total PM Peak Enter Exit Total Noon Enter Exit Total TOTAL DW TRIPS 7445 108 63 171 346 346 692 255* 258* 513* LESS DIVERTED NEW PASS -BY(1) TRIPS(2) TRIPS 2234 1489 3722 32 22 54 19 13 31 51 35 85 138 69 139 138 69 139 276 138 278 76 51 128 77 52 129 153 103 257 (1) - Pass -by rate of 40% for PM peak hour, 30% for all other times. (2) - Diverted trip rate of 20 %. * Estimated as 10% higher than traditional PM peak hour based on comments from City of Tukwila Staff and information provided in the traffic impact analysis for the Southcenter Mall Expansion. Table 3 shows that although there will be a significant number of trips at the site's accesses, the number of new trips on the adjacent street system and through the intersections will be much less. It is likely, that due to the location of the proposed site within a dense retail area, that the number of diverted trips will be even higher and the total number of new trips will be lower. 2. Trip Distribution /Assignment The new traffic generated by the development of the property will be distributed onto the adjacent roadway system and then onto the regional transportation system. It is probable that the retail site will attract from a similar market base as Southcenter Mall due to its proximity to the mall. The trips from the site will be dispersed in all directions towards the regional transportation systems in the area, i.e., SR -518, I -5, I -405, and towards the major arterials such as West Valley Highway or S. 180th Street. The distribution has been based on conversations with the City staff, the retail site's representative, an examination of 11 the transportation system and previous studies conducted in the area. Figure 3 shows the estimated trip distribution (for the new trips) by percent for the subject site. It should be -noted - that these values are approximate and may vary from day to day depending on the needs and desires of the future customers of the development. Figures 4 and 6 show the trip assignment to the various streets during the noon and PM peak hours, including both the new and diverted trips. It can be seen from these figures that the project will have its greatest impact on Andover Park West and Strander Boulevard. Figures 5 and 7 show a more detailed trip assignment at the retail site driveways for the noon and PM peak hours, respectively. 3. Traffic Volumes The projected 1993 average daily traffic volumes both with and without the development are shown on Figure 8. The 1991 traffic volumes shown on Figure 2 were increased two percent per year to estimate the 1993 volumes. The projected noon and PM peak hour traffic volumes at the intersections identified earlier for the year 1993 both with and without the proposed project have been included in the Appendix. 4. Level of Service Level of service calculations were conducted again for the intersections of Strander Boulevard /Southcenter Parkway, Strander Boulevard /Andover Park West, and Strander Boulevard /West Valley Highway. It has been assumed for the purposes of analysis that geometric conditions at the intersections are unchanged from existing conditions. It is estimated that the proposed development would be essentially complete and occupied in late 1993. The existing traffic volumes were increased by 2% to account for miscellaneous background growth which may occur over the next year. This could essentially be considered a "no- action" scenario or base condition. The future conditions were then reviewed with the trips from the proposed project added. The results of the future conditions are shown in Table 4. 12 ESTIMATED TRIP DISTRIBUTION 13 19 51ST AVE. S. 19 PROJECT SITE 29 19 19 .114jr 29 62ND AVE 10 VL. 10 E S�tH 27 ~27 2 2 4/q- +(7 o o +(48 6) +C46) 58 5 -'--► 29 29 STRANDER BLVD. - XX - NEW TRIPS - (X> - DIVERTED TRIPS 29 2 1 -5 n. w + w 29 U = Y 7 O a N a- ce w 0 0 +(110) 15) 10 S. 180TH ST. 10 '(8) 10 (8) '23) 36 TRECK DR 3 i 8 ANDOVER PARK E. NORTH 38 38f 1 -405 57 N 16 1 19 1 9 10 19 - 19 ESTIMATED NOON PEAK HOUR TRIP ASSIGNMENT FIGURE 4 14 + � . 6 23� +(23) t 14 29 • 40 +(35) 29 5 +(23 "\ 18 26 +(23) 52 1 (1 1) 33 74 36 (17(23) 31 +(23 H w ANDOVER PARK NORTH +(23) +(7) 74 35 54 73 54 68 +(7) +(35) TRIPS ENTERING - 381 TRIPS EXITING - 381 STRANDER BLVD. PASS -BY TRIPS - XX rNEW AND DIVERTED TRIPS XX OR (XX) ESTIMATED TRIPS AT RETAIL SITE NOON PEAK HOUR FIGURE 5 1 S ___ ' Si AVE. S. NORTH 28 STRAN DEf2 BLVD PROJECT SITE XX - NEW TRIPS (X> - DIVERTED TRIPS 21 14 14 14 ESTIMATED PM PEAK HOUR TRIP ASSIGNMENT FIGURE 6 16 4 18 +(20) 11 36 • 30 +(30) +(21) 39 \��► 23 90 26 23 +(211 ►- (1) w 3 a w 0 0 z NORTH +(20) +(7) 90 25 60 52 Y- 41 49 +(7) +(30) TRIPS ENTERING - 346 TRIPS EXITING - 346 STRANGER BLVD. PASS -BY TRIPS - XX rNEW AND DIVERTED TRIPS XX OR (XX) ESTIMATED TRIPS AT RETAIL SITE PM PEAK HOUR FIGURE 7 17 ---------- • 1-5 PROJECT SITE XX - 1993 ADT W/OUT PROJECT (XX) - 1993 ADT W/PROJECT 1-5 NORTH 0 "t. II _ ce. . 1 :Wm<114 1 1 03 to 12 (1 294 M 40 TuKwILA .N. 17480 (1 8600) (221r STRAN D ER BLVD. 39 ) DR. g? I: Ya- c6 u.1 1- c Z W 0 1 t- D 0 (i) z 35580 (0 5950) • 146`41 50 10) 30800 (3 2 0 NDOVER A ei= u./ QI 13940 co 22 90 11030 1 41 30) (11080) (22 90) 97180 (10047 0) 34020 S. 18 OTH ST. 34390 21220 (21 600) 1-405 28510 28880) 33190 (33560) 33920 (34290) 1993 ESTIMATED DAILY TRAFFIC VOLUMES FIGURE 8 1 TABLE 4 1993 LEVELS OF SERVICE LOCATION Strander Blvd./ Southcenter Pkwy. Strander Blvd./ Andover Park West PEAK LEVEL OF SERVICE (DELAY) HOUR W /OUT PROJECT W /PROJECT NOON D ( 31 sec.) D ( 31 sec.) PM C ( 24 sec.) D ( 26 sec.) NOON E ( 51 sec.) F ( 72 sec.) PM D ( 34 sec.) D ( 40 sec.) Strander Blvd./ NOON D ( 33 sec.) D ( 35 sec.) West Valley Hwy. PM D ( 28 sec.) D ( 29 sec.) The results of the capacity analyses indicate that the levels of service at the intersections would drop slightly over the next year as a result of the miscellaneous traffic growth occurring in the area. The trips from the proposed retail site would have a limited impact at the intersections of Strander Boulevard /Southcenter Parkway and Strander Boulevard /West Valley Highway. However, the development would critically impact the adjacent intersection of Strander Boulevard /Andover Park West, particularly during the noon peak hour when the level of service would drop to "F" if no improvements are made to the existing street geometry. 5. Transit Usage As noted earlier, transit service is readily available along both Strander Boulevard and Andover Park West. It is not likely that the development of this retail site would necessitate any new transit routes or re- routing of current routes. METRO could consider re- locating bus stops on the south side of Strander Boulevard to the site frontage since sidewalks will be constructed, making it a more desirable location for bus patrons to wait. 6. Pedestrians The development of this retail site would include the construction of sidewalks along both the Strander Boulevard and Andover Park West frontages. The installation of sidewalk along Andover Park West would complete the "missing link" of sidewalk currently on the east side of the street between the motel to the south and the intersection of Strander Boulevard /Andover Park West. No sidewalk currently exists on the south side of Strander Boulevard east of the site, however the construction of 19 sidewalk along the frontage would add a large section of sidewalk which currently does not exist. Although the installation of this sidewalk is no guarantee of complete safety to pedestrians, it does provide a very._ important link towards the completion of the pedestrian system 'in the area. The completion of this system may help to encourage more people to walk to restaurants during lunch hours, for example, rather than using their vehicle. 7. Access The driveways which will serve the site have been located as far from the intersection of Strander Boulevard /Andover Park West as possible in order not to interfere with operations at the intersection such as the blocking of driveways caused by long queues at the signal. (Truck loading access driveways are also proposed further to the east or south of these main driveways.) No left -turn storage lanes are currently present along either Strander Boulevard or Andover Park West at the driveways. A level of service analysis was conducted for these driveways using the estimated driveway volumes shown in the Appendix for the existing geometric conditions. The following table shows the results of these analyses. TABLE 5 1993 LEVELS OF SERVICE SITE ACCESSES PEAK LEVEL OF SERVICE LOCATION HOUR (RESERVE CAPACITY) Andover Park West/ Noon WBLT - E ( 7) Site Driveway* WBRT - A ( 636) SBLT - A ( 459) PM WBLT - E ( 47) WBRT - A ( 619) SBLT - A ( 433) Strander Boulevard/ Site Driveway* Noon WBLT - B ( 361) NBLT - F ( -39) NBRT - A ( 605) PM WBLT - A ( 431) NBLT - F ( -1) NBRT - A ( 654) * Unsignalized level of service and reserve capacity are shown for the critical movement(s) for the subject approach. The results of the capacity analyses show that the left- 20 turns exiting from the site would experience difficulties and long delays. Although the entering left -turns would not experience a capacity problem, without the presence of left -turn lanes on either Strander Boulevard or Andover Park West, there is a potential for rear -end and left - turn.. accidents, along with the back -up of through traffic. 8. Extension of Treck Drive Treck Drive is a local access street which currently extends westerly from Andover Park East and dead -ends at the railroad tracks near the southerly property line of the proposed retail site. The completion of this street to Andover Park West would provide another east -west connection which could be used as an alternate route to Strander Boulevard, although its use would be somewhat limited since it would not provide direct access to Southcenter Mall, and vehicles would eventually need to use Strander Boulevard. The motel located to the south of the proposed retail site has provided for future right -of -way for this connection and the developer of the proposed retail site will be doing the same. When this connection is completed, the retail site's truck loading access would need to be modified somewhat such that one of its access is from Treck Drive. The current layout of the site is such that the customer parking lot could not be accessed from the Treck Drive extension. The potential use of Treck Drive by patrons of the retail site would likely be limited to those trips destined to /from the southeast. This would range from 0 -20% of the retail site traffic, most likely around 10 %. D) Impacts The proposed Segale Retail Site will generate additional traffic which will impact the roadways in the area. The most notable impact from the development will be at the adjacent intersection of Strander Boulevard /Andover Park West where the level of service during the noon peak hour will drop to "F ". It is important to keep in mind that the evaluation of this intersection included peak hour traffic volumes present during the Christmas shopping season and therefore represent a slightly worse than normal situation. However, it is also evident that the intersection of Strander Boulevard /Andover Park West needs to have left -turn storage lanes constructed on the north and south legs which will greatly enhance the operation of the intersection. The exiting left -turns at the site's driveways will also experience difficulty. The most reasonable solution to alleviating this problem is the installation of a two -way 21 left -turn lane on both Strander Boulevard and Andover Park West which can be used by both the entering and exiting left - turns as a refuge area. The use of this lane by the exiting left -turns for merging and accelerating would raise the level of service for these movements. Table 6 shows the resultant level of service for both the intersection of Strander Boulevard /Andover Park West and site's driveways with mitigation, i.e. the installation of left -turn storage lanes as discussed above. TABLE 6 1993 LEVELS OF SERVICE WITH MITIGATION PEAK LEVEL OF SERVICE LOCATION HOUR (DELAY) Strander Blvd./ NOON D ( 37 sec.) Andover Park West PM D ( 31 sec.) PEAK LEVEL OF SERVICE LOCATION HOUR (RESERVE CAPACITY) Andover Park West/ Noon WBLT - E ( 82) Site Driveway* WBRT - A ( 636) SBLT - A ( 459) PM WBLT - D ( 112) WBRT - A ( 619) SBLT - A ( 433) Strander Boulevard/ Noon WBLT - B ( 361) Site Driveway* NBLT - E ( 8) NBRT - A ( 605) PM WBLT - A ( 431) NBLT - E ( 68) NBRT - A ( 654) * Unsignalized level of service and reserve capacity are shown for the critical movement(s) for the subject approach. The proposed mitigation would improve operating conditions at all of the locations, although the left -turns exiting the site would still operate at level of service "E ". Other locations in the vicinity of the project which the City had requested be reviewed with respect to the number of new trips which would travel through them include S. 180th Street /West Valley Highway and the I- 405 /Interurban Avenue 22 • interchange. It is estimated that the following number of new trips would travel through these intersections. S. 180th Street/ West Valley Highway Interurban Avenue/ I -405 Interchange 76 noon trips 56 PM trips 76 noon trips 56 PM trips The City of Tukwila has developed a per trip mitigation fee at these locations for future improvements. E) Mitigation The following are suggested as possible mitigation measures for the development. 1. Participation in the cost of the widening of Andover Park West to provide left -turn lanes at its intersection with Strander Boulevard and the construction of a two -way left -turn lane at the site's access. 2. Participation in the cost of widening of Strander Boulevard east of Andover Park West to provide a two -way left -turn lane. 3. Allow for future right -of -way for the possible extension of Treck Drive. 4. Payment of $ - -- per trip through the intersection of S. 180th Street /West Valley Highway for future roadway improvements. 5. Payment of $ - -- per trip through the intersection of Interurban Avenue /I -405 Interchange for future roadway improvements. 6. Construction of sidewalk along the site's Strander Boulevard and Andover Park West frontages. 23 APPENDIX OPEN SPACE 4,1 FAST FOOD ANDOVER PARK WEST COPPING CENTER LEVEL OF SERVICE (The following are excerpts from the 1985 Highway Capacity Manual - Special Report 209.) The concept of level of service is defined as a qualitative measure describing operational conditions within a traffic stream, and their perception by motorists and /or passengers. A level -of- service definition generally describes these conditions in terms of such factors as speed and travel time, freedom to maneuver, traffic interruptions, comfort and convenience, and safety. Six levels of service are defined for each facility for which analysis procedures are available. They are given letter designations, from A to F, with level -of- service A representing the best operating conditions and level -of- service F the worst. 1. Level -of- service definitions - In general, the various levels of service are defined as follows for uninterrupted flow facilities: - Level -of- service A represents free flow. Individual users are virtually unaffected by the presence of others in the traffic stream. Freedom to select desired speeds and to maneuver within the traffic stream is extremely high. The general level of comfort and convenience provided to the motorist, passenger, and pedestrian is excellent. - Level -of- service B is in the range of stable flow, but the presence of other users in the traffic stream begins to be noticeable. Freedom to select desired speeds is relatively unaffected, but there is a slight decline in the freedom to maneuver within the traffic stream from level of service A. The level of comfort and convenience provided is somewhat less than at level of service A, because the presence of others in the traffic stream begins to affect individual behavior. - Level -of- service C is in the range of stable flow, but marks the beginning of the range of flow in which the operation of individual users becomes significantly affected by the interactions with others in the traffic stream. The selection of speed is now affected by the presence of others, and maneuvering within the traffic stream requires substantial vigilance on the part of the user. The general level of comfort and convenience declines noticeably at this level. - Level -of- service D represents high - density, but stable, flow. Speed and freedom to maneuver are severely restricted, and the driver or pedestrian experiences a generally poor level of comfort and convenience. Small increases in traffic flow will generally cause operational problems at this level. - Level -of- service E represents operating conditions at or near the capacity level. All speeds are reduced to a low, but relatively uniform value. Freedom to maneuver within the traffic stream is extremely difficult, and it is generally accomplished by forcing a vehicle or pedestrian to "give way" to accommodate such maneuvers. Comfort and convenience levels are extremely poor, and driver or pedestrian frustration is generally high. Operations at this level are usually unstable, because small increases in flow or minor perturbations within the traffic stream will cause breakdowns. - Level -of- service F is used to define forced or breakdown flow. This conditions exists whenever the amount of traffic approaching a point exceeds the amount which can traverse the point. Queues form behind such locations. Operations within the queue are characterized by stop- and -go waves, and they are extremely unstable. Vehicles may progress at reasonable speeds for several hundred feet or more, then be required to stop in a cyclic fashion. Level -of- service F is used to describe the operating conditions within the queue, as well as the point of the breakdown. It should be noted, however, that in many cases operating conditions of vehicles or pedestrians discharged from the queue may be quite good. Nevertheless, it is the point at which arrival flow exceeds discharge flow which causes the queue to form, and the level -of- service F is an appropriate designation for such points. These definitions are general and conceptual in nature, and they apply primarily to uninterrupted flow. Levels of service for interrupted flow facilities vary widely in terms of both the user's perception of service quality and the operational variables used to describe them. For each type of facility, levels of service are defined based on one or more operational parameters which best describe operating quality for the subject facility type. While the concept of level of service attempts to address a wide range of operating conditions, limitations on data collection and availability make it impractical to treat the full range of operational parameters for every type of facility. The parameters selected to define levels of service for each facility type are called "measures of effectiveness," and represent those available measures that best describe the quality of operation on the subject <. facility type. Each level of service represents a range of conditions, as defined by a range in the parameters given. Thus, a level of service is not a discrete condition, but rather.a range of conditions for which boundaries are established. The following tables describe level of service for signalized and unsignalized intersections. Level of service for signalized intersections is defined in terms of delay . Delay is a measure of driver discomfort, frustration, fuel consumption, and lost travel time. Specifically, level -of- service criteria are stated in terms of the average stopped delay per vehicle for a 15- minute analysis period. Level of service for unsignalized intersections is measured in terms of unused, or reserve capacity of the lane in question. SIGNALIZED INTERSECTIONS - LEVEL OF SERVICE Stopped Delay Per Level Of Service Vehicle (sec) A less than 5.1 B 5.1 to 15.0 C 15.1 to 25.0 D 25.1 to 40.0 E 40.1 to 60.0 F greater than 60.0 UNSIGNALIZED INTERSECTIONS - LEVEL OF SERVICE Reserve Expected Delay to Level Of Service Capacity Minor Street Traffic A 400+ Little or no delay. B 300 -399 Short traffic delay. C 200 -299 Average traffic delay. D 100 -199 Long traffic delays. E 0 -99 Very long traffic delays. F <0 The level of service for a four -way stop controlled intersection is not as well- defined as other forms of control. The following three tables show the capacity for a four -way stop and approximate level of service "C" volumes for four -way stop - controlled intersections. CAPACITY OF TWO -BY -TWO LANE FOUR -WAY STOP - CONTROLLED INTERSECTION FOR VARIOUS DEMAND SPLITS DEMAND SPLIT CAPACITY (VPH)* 50/50 1900 55/45 1800 60/40 1700 65/35 1600 70/30 1500 * Total Capacity, All Legs CAPACITY OF FOUR -WAY STOP - CONTROLLED INTERSECTIONS WITH 50/50 DEMAND SPLIT FOR VARIOUS APPROACH WIDTHS INTERSECTION TYPE CAPACITY (VPH)* 2 -lane by 2 -lane 2 -lane by 4 -lane 4 -lane by 4 -lane 1900 2800 3600 * Total Capacity, All Legs APPROXIMATE LEVEL -OF- SERVICE C SERVICE VOLUMES FOR FOUR -WAY STOP - CONTROLLED INTERSECTIONS DEMAND SPLIT 50/50 55/45 60/40 65/35 70/30 LOS C SERVICE VOLUME, VPH NUMBER OF LANES 2 BY 2 1200 1140 1080 1010 960 2 BY 4 1800 1720 1660 1630 1610 4 BY 4 2200 2070 1970 1880 1820 NOON PEAK HOUR 12:00-1:00 PM PEAK HOUR 3:45 -4:45 SOUTHCENTER PARKWAY SOUTHCENTER PARKWAY COUNT DATE: DECEMBER 3, 1992 13021 1377 1644 491 1153 1578 884 A 693 1577 3155 12849 1571 fi 1278 \-->413 865 1231 913 511 1424 2655 N STRANDER BLVD. 493 918 425 AIL N 2102 1184 STRANDER BLVD. 658 1024 366 1948 924 EXISTING PEAK HOUR TRAFFIC VOLUMES STRANDER BOULEVARD /SOUTHCENTER PARKWAY NOON PEAK HOUR PM PEAK HOUR SOUTHCENTER PARKWAY SOUTHCENTER PARKWAY 3082 1405 t 1677 ‘,V> 501 1176 l 1610 902 707 1609 t 3219 2905 1602 t 1303 421 882 W 1255 931 521 1452 2707 N STRANDER BLVD. 503 937 434 2145 1208 N STRANDER BLVD. 671 1044 373 1986 942 1993 ESTIMATED PEAK HOUR TRAFFIC VOLUMES BASE CONDITION STRANDER BOULEVARD /SOUTHCENTER PARKWAY NOON PEAK HOUR PM PEAK HOUR SOUTHCENTER PARKWAY SOUTHCENTER PARKWAY t 3290 1509 t 1781 �j 605 1176 d 1610 902 A 707 1609 3219 3071 1685 1386 \-j504 882 W 1255 931 521 1452 t 2707 AL N STRANDER BLVD. 607 1041 434 2353 --> 1312 AL N STRANDER BLVD. 754 1127 373 2152 -1025 1993 ESTIMATED PEAK HOUR TRAFFIC VOLUMES WITH PROJECT STRANDER BOULEVARD /SOUTHCENTER PARKWAY ., NOON PEAK HOUR 1 1:30-1 2:3 0 1766 PM PEAK HOUR 3:30 -4:30 1439 ANDOVER PARK W. 158 965< 171 801 164 ANDOVER PARK W. 797 449 466 216 1 820 t 1574 777 AIL N STRANDER BLVD. 190 225 591 C 1023 207 381 --> 766 1789 707 t 1527 t 1389 775 614 129 199 802 125 637 129 COUNT DATE: DECEMBER 2, 1993 286 383 466 194 110 770 A 110 N STRANDER BLVD. 184 479 < 795 132 547 T 1317 1487 -> 692 EXISTING PEAK HOUR TRAFFIC VOLUMES STRANDER BOULEVARD /ANDOVER PARK WEST • • - �. �.-•+....... �.. _....... ............. . NOON PEAK HOUR 1800 PM PEAK HOUR H 1470 ANDOVER PARK W. 1606 793 T 813 161 194 984E - 174 816 167 ANDOVER PARK W. 458 475 N STRANDER BLVD. 230 603 < 1044 211 389 220 <v> 112 721 1 836 1557 $1418 791 627 132 <---I\--->203 292 819E 128 651 391 475 A 198 112 785 132 T 1825 781 N STRANDER BLVD. 188 489 c 812 W 559 1344 135 i H 1518 706 1993 ESTIMATED PEAK HOUR TRAFFIC VOLUMES BASE CONDITION STRANDER BOULEVARD /ANDOVER PARK WEST • . NOON PEAK HOUR 2008 PM PEAK HOUR 1636 ANDOVER PARK W. 161 1088 E 174 920 196 ANDOVER PARK W. 842 473 550 272 I 880 11664 822 N STRANDER BLVD. 208 236 655 1102 211 412 796 1676 11472 823 649 132E >214 303 902 E 128 734 > 451 493 155 112 1972 - >870 N STRANDER BLVD. 202 530 C 867 135 240 112 593 845 1438 1644 -> 777 1993 ESTIMATED PEAK HOUR TRAFFIC VOLUMES WITH PROJECT STRANDER BOULEVARD /ANDOVER PARK WEST NOON PEAK HOUR 1 1:45— 1 2:4 5 1781 WEST VALLEY HWY. 2220 1032 f 1188 562 t-J\--->- 53 959 406 822 >58 358 STRANDER BOULEVARD PM PEAK HOUR 3:30 -4:30 1523 WEST VALLEY HWY. 573 N 34 50 c 50 592 —> 126 347 >15 I. 954 981 134 260 1935 2549 1127 414E -->13 673 E— 700 420 850 > 15 415 246 STRANDER BOULEVARD 1130 COUNT DATE: DECEMBER 7, 1992 1422 T N 15 13 t 43 15 987 --> 31 1236 2366 3 74 EXISTING PEAK HOUR TRAFFIC VOLUMES STRANDER BOULEVARD /WEST VALLEY HIGHWAY � . NOON PEAK HOUR 1816 WEST VALLEY HWY. 1211 573 978 E 584 414 838 ( >59 365 STRANDER BOULEVARD PM PEAK HOUR 1552 WEST VALLEY HWY. $2264 1053 54 51 604 354 15 1 1000 973 1973 "`` 2599 1450 1149 422 >13 v 714 686 < 428 866 15 423 STRANDER BOULEVARD N 35 51 137 N 15 13 < 43 15 1007 251 1261 L 1152 2413 265 128 -> 31 H 74 1993 ESTIMATED PEAK HOUR TRAFFIC VOLUMES BASE CONDITION STRANDER BOULEVARD /WEST VALLEY HIGHWAY NOON PEAK HOUR WEST VALLEY HWY. 1035 <- 611 <---> 452 1930 895 <' >59 384 STRANDER BOULEVARD PM PEAK HOUR 1636 WEST VALLEY HWY. $2340 1091 T 1249 �> 54 584 51 604 373 15 L 1019 992 12011 $2655 1478 t 1177 450<--/\->13 v 728 < 456 908 437 STRANDER BOULEVARD 1 714 N 35 51 137 N 15 13 < 43 15 1007 265 E >3 1275 1166 2441 H 265 128 >31 74 1993 ESTIMATED PEAK HOUR TRAFFIC VOLUMES WITH PROJECT STRANDER BOULEVARD /WEST VALLEY HIGHWAY • NOON PEAK HOUR PM PEAK HOUR ANDOVER PARK WEST ANDOVER PARK WEST 11676 796 1\ 880 \--> 57 823 1 890 593 At. N DRIVEWAY 112 179 67 684 -> 153 332 780 I 1670 $1438 845 DRIVEWAY 105 541 167 62 603 740 832 t 1435 311 144 1993 ESTIMATED PEAK HOUR TRAFFIC VOLUMES WITH PROJECT ANDOVER PARK WEST/SITE DRIVEWAY NOON PEAK HOUR 1972 PM PEAK HOUR 1634 AIL N STRA DER BLVD. 1102 •< 870 � 744 126 DRIVEWAY 22 1017 [ J 1119 102 1980 0 .c�--> 117 202 1 430 STRA DER BLVD. — >861 AL N 857 F- 777 116 DRIVEWAY 661 20 782 c, 868 86 104 179 381 1633 765 1993 ESTIMATED PEAK HOUR TRAFFIC VOLUMES WIT PROJECT STRANDER 8 D. /SITE DRIVEWAY peC- 9%,2- 627 Control No. Epic File No. L13 -coct Fee $225.00 Receipt No. ENVIRONMENTAL CHECKLIST A BACKGROUND 1. Name of proposed project, if applicable: Segale Retail at Strander Blvd and Andover West 2. Name of applicant: M.A. Segale Inc. 3. Address and phone number of applicant and contact person: M.A. Segale Inc. P.O.Box 88050 Tukwila, Washington 98138 Contact person: Dana Warren - tel #: 575 -3200 4. Date checklist prepared: February 26, 1993 5. Agency requesting Checklist: City of Tukwila 6. Proposed timing or schedule (including phasing, if applicable): Design 6/92 - 2/93 SEPA & BAR Permits 3/93 - 4/93 Grading & Site Work permits 4/93 Building Permit 4/93 - 6/93 Site Grading & Utility Construction 5/93 - 6/93 Building Construction 6/93 - 10/93 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. No 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. Traffic Study - David Hamlin & Assoc., January 1992 Geotechnical Report - Geo Engineers, Nov 30, 1992 • IR 1 8 1093 9. Do you know whether applications are pending governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. No 10. List any government approvals or permits that will be needed for your proposal. SEPA BAR Land Altering & Grading Building Mechanical Electrical Plumbing & Side Sewer Fire Protection Signage 11. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. Section E requires a complete description of the objectives and alternatives of your proposal and should not be summarized here. The project involves constructing a 109,000 square foot retail center with 481 parking stalls. 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township, and range, if known. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. The site located on the south east corner of the intersection of Strander Blvd. and Andover Park West. 13. Does the proposal lie within an area designated on the City's Comprehensive Land Use Policy Plan map as environmentally sensitive? NO TO BE COMPLETED BY APPLL.ANT B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site (circle one): Flat, rolling, hilly, steep slopes, mountainous, other. Flat (there is presently preload on the site which will be removed to build the building b. What is the steepest slope on the site (approximate percent slope)? 2 percent c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any prime farmland. Sand & Gravel d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. No e. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. The existing preload (approximately 37,000 yards) which is presently on the site will be leveled to grade the site f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. g. None is expected because the site is relatively flat. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? 87.6 percent of the site will be covered with impervious surfaces. This includes buildings, parking driveways and sidewalks. -3- Evaluation for Agency Use Only .. ......, >.:. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: Silt fences will be used at existing catchbasins to catch silt -laden runoff. 2. Air a. What types of emissions to the air would result from the proposal (i.e., dust, automobile odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities, if known. During construction there will be construction equipment exhaust and dust. After construction there will be exhaust from customer and deliver vehicles. b. Are there any off -site sources of emissions or odor that may affect your proposal? If so, generally describe. No c. Proposed measures to reduce or control emissions or other impacts to air, if any: The contractor will be required to water the site during grading and earthwork construction to minimize dust emissions. Construction equipment will be required to meet local, state and federal emission standards. 3. Water a. Surface: 1) Is there any surface water body on or in the immediate vicinity of the site (including year -round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. if appropriate, state what stream or river it flows into. No -4- • Evaluation for Agency Use Only . , µ Evaluation for Agency Use Only 2) Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans. N/A 3) Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site what would be affected. Indicate the source of fill material. 4 None Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities, if known. No 5) Does the proposal lie within a 100 -year floodplain? If so, note location on the site plan. No 6) Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. No b. Ground: 1) Will ground water be withdrawn, or will water be discharged to ground water? Give general description, purpose, and approximate quantities, if known. No 2) Describe waste materials that will be discharged into the ground from septic tanks or other sources, if any (for example: domestic sewage; industrial, containing the following chemicals...; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be -5- ... . ".:�:?� Evaluation for Agency Use Only served (if applicable), or the number of animals or humans the system(s) are expected to serve. No waste materials will be discharged. c. Water Runoff (including storm water): 1) Describe the source of runoff (including storm water) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. 2 Surface parking runoff and building roof runoff will be collected and routed by gravity to the existing City Storm drainage system. The City system lies within the P -17 basin. Could waste materials enter ground or surface waters? If so, generally describe. No unless a oil /water separator fails. d. Proposed measures to reduce or control surface, ground, and runoff water impacts, if any: Parking runoff will pass through oil /water separators before discharging to the city storm sewer. 4. Plants a. Check or circle types of vegetation found on the site: None Deciduous tree: alder, maple, aspen, other Evergreen tree: fir, cedar, pine, other Shrubs Grass Pasture Crop or grain Wet soil plants: cattail, buttercup, bulrush, skunk cabbage, other Water plants: water lily, eelgrass, -6- • . milfoil, other Other types of vegetation b. What kind and amount of vegetation will be removed or altered? None c. List threatened or endangered species known to be on or near the site. None d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: Site will be landscaped using native vegetation to enhance the site. 5. Animals a. Circle any birds and animals which have been observed on or near the site or are known to be on or near the site: Birds: hawk, heron, eagle, songbirds, other: No Mammals: deer, bear, elk, beaver, other: No Fish: bass, salmon, trout, herring, shellfish, other:No b. List any threatened or endangered species known to be on or near the site. None c. Is the site part of a migration route? If so, explain. Do not know d. Proposed measures to preserve or enhance wildlife, if any: None -7- Evaluation for Agency Use Only �: 6. Energy and Natural Resources Evaluation for Agency Use Only a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. Electricity will be used for lighting, and natural gas and electricity will be used for HVAC. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. No c. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: The building will be designed to meet the Washington State Energy code to save energy in heating and cooling the building. 7. Environmental Health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so, describe. No 1) Describe special emergency services that might be required. None 2) Proposed measures to reduce or control environmental health hazards, if any: None b. Noise 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other) ? None -8- �_. .: \ . 2 What types and levels of noise would be created by or associated with the project on a short -term or a long -term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. Noise from construction equipment during construction (approximately 7:00 am to 5 :00 pm). Noise from pedestrian vehicles and delivery trucks once the building is open for business (approximately 9:00 am to 9:00 pm). 3) Proposed measures to reduce or control noise impacts, if any: All equipment will be operated with required local, State and Federal mufflers. 8. Land and Shoreline Use a. What is the current adjacent properties? Site: vacant Adjacent properties: warehouse. use of the site and Retail, office and b. Has the site been used for agriculture? If so, describe. No c. Describe any structures on the site. None d. Will any structures what? e. f. No be demolished? If so, What is the current zoning classification of the site? C -2 What is the current comprehensive plan designation of the site? Commercial -9- Evaluation for Agency Use Only g. If applicable, what is the current shoreline master program designation of the site? N/A h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. Yes, The site is shown on the City maps as being within a "sensitive area" described to be "of potential seismic instability, with soft, loose sand and a shallow ground water table ". i. Approximately how many people would reside or work int he completed project? Approximately 60 people will work here. j. Approximately how many people would the completed project displace? None k. Proposed measure to avoid or reduce displacement impacts, if any: N/A 1. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: Proposal is consistent with current zoning and comprehensive plan designation. 9. Housing a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low- income housing? None b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low- income housing. None -10- Evaluation for Agency Use Only • .. .... Evaluation for Agency Use Only c. Proposed measure to reduce or control housing impacts, if any. None 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? Max. Building Height - 35' -0" Exterior materials - architectural concrete, stained for color. b. What views in the immediate vicinity would be altered or obstructed? None c. Proposed measure to reduce or control aesthetic impacts, if any: Building landscaping and building modulation. 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? No anticipated glare from buildings. Parking lot will be illuminated during business hours when its dark. b. Could light or glare from the finished project be a safety hazard or interfere with views? No c. What existing off -site sources of light or glare may affect your proposal? None d. Proposed measures to reduce or control light and glare impacts, if any: None ._,... 12. Recreation Evaluation for Agency Use Only a. What designed and informal recreational opportunities are in the immediate vicinity? There is a pedestrian /bike trail that runs along the Green River. b. Would the proposed project displace any existing recreational uses? If so, describe. No c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: An exterior lunch /break area has been provided for the employees in the SE corner of the site amongst the trees. 13. Historic and Cultural Preservation a. Are there any places or objects listed on, or proposed for, national, state, or local preservation registers known to be on or next to the site? If so, generally describe. None b. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importance known to be on or next to the site. None c. Proposed measures to reduce or control impacts, if any: None 14. Transportation a. Identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. Strander Blvd on the North, Andover Park West on the West. Access to the project is located off both these streets. -12- Evaluation for Agency Use Only b. Is the site currently served by public transit? If not, what is the approximate distance to the nearest transit stop Yes Metro presently has service along both Andover Park West and Strander Blvd. c. How many parking spaces would the completed project have? How many would the project eliminate? Added - 481 spaces Deleted - 0 spaces d. Will the proposal require any new roads or streets, or improvements to existing roads or streets, not including driveways? If so, generally describe (indicate whether public or private). New sidewalk, curb and gutter will be constructed along the frontage on both Andover West and Strander Blvd. e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. There is an existing rail spur behind the project although the project will not be served by rail. f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. g- See attached Traffic Study prepared by David Hamlin and Associates. Proposed measures to reduce or control transportation impacts, if any: See attached Traffic Study prepared by David Hamlin and Associates. 15. Public Services a. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools, other)? If so, generally describe. -13- .. . Yes, fire protection and police protection by virtue of the fact that there will be a building and a operating business on the site. b. Proposed measures to reduce or control direct impacts on public services, if any. The new business and the property are taxed which supports public services. 16. Utilities a. Circle utilities currently available at the site: electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system, other. b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. Sanitary Sewer - Connect to existing City sewer service in street. Storm - Connect to existing City storm line in street. Water - Connect to existing City water line service in street. Telephone - Connect to US West service in street. Electricity - Connect to existing Puget Power service along north property line. Gas - Connect to existing WNG service in street. C. Signature The above answers are true and complete to the best of my knowledge. I understand that the lead agency is relying on them to make its decision. Signature Va§6d/anef/i g Date Submitted tee, -14- Evaluation for Agency Use Only Evaluation for Agency Use Only PLEASE CONTINUE TO THE NEXT PAGE. ^' TO BE COMPLETED BY APPLANT E. SUPPLEMENTAL SHEET FOR ALL PROJECT AND NON - PROJECT PROPOSALS The objectives and the alternative means of reaching the objectives for a proposal will be helpful in reviewing the foregoing items of the Environmental Checklist. This information provides a general overall perspective of the proposed action in the context of the environmental information provided and the submitted plans, documents, supportive information, studies, etc. 1. What are the objective(s) of the proposal? Construct a new retail center on vacant property. 2. What are the alternative means of accomplishing these objectives? Finding another site. 3. Please compare the alternative means and indicate the preferred course of action: This property is owned by the proponent and it would be unfeasible to construct this project on another site. 4. Does the proposal conflict with policies of the Tukwila Comprehensive Land Use Policy Plan? If so, what policies of the Plan? No 5. Proposed measures to avoid or reduce the conflict(s) are: N/A -16- Evaluation for Agency Use Only PLANT LIST QUANTITY BOTANICAL NAME / COMMON NAME SIZE COMMENTS TREES 14 ACER RUBRUM 'ARMSTRONG' / ARMSTRONG MAPLE 2` CALIPER MATCHED STREET TREE 18 CHAMAECYPA.RIS NOOTKATENSIS PENDULA' / ALASKA WEEPING CEDAR SMALL - 4' MIN HEIGHT • MEDIUM - 4' MIN HEIGHT LARGE - 10' MIN HEIGHT 31 CUPRESSOCYPARIS LEYLANDII / LEYLAND CYPRESS 6' MIN HEIGHT 10 PICEA OMORIKA / SERBIAN SPRUCE 6' MIN HEIGHT 31 PINUS DENSIFLORA 'UMBRACULIFERA' / TANYOSHO PINE 3' MIN HEIGHT 33 THUJA PLICATA / WESTERN RED CEDAR 6' MIN HEIGHT SHRUBS 140 ABELIA GRANDIFLORA 'EDWARD GOUCHER' / EDWARD GOUCHER ABELIA 12" 20 ARBUTUS 'JNEDO / STRAWBERRY TREE 21' 332 ILEX CRENATA 'CONVEXA' / JAPANESE CONVEX LEAF HOLLY 18" 69 MAHONIA AOUIFOLIUM / OREGON GRAPE 12" 142 PHOTINIA FRASERI / PHOTINIA 18 15 PINUS MUGO 'MUGO' / MUGHO PINE 18" 304 PRUNUS LAUROCERASUS 'OTTO LUYKEN' / OTTO LUYKEN LAUREL 15" 30 RHODODENDRON 'BELLE HELLER' 12" 36 RHODODENDRON 'ANAH KRUSCHKE' 15" 38 RHODODENDRON 'MADAME MASSON' 15" 54 RHODODENDRON 'JEAN MARIE DE MONTAGUE' 15" 31 RHODODEDNDRON 'RAMAPO' 12 39 RHODODENDRON 'PJM' 12 GROUNDCOVER CALLUNA VULGARIS 'MEDITERRANEAN PINK' / HEATHER 4" CONT. 18" O.C. SPACING .COTONEASTER DAMMERI 'CORAL BEAUTY' / CORAL BEAUTY COTONEASTER 4" CONT. 24" O.C. SPACING GAULTHERIA SHALLON / SALAL 4" CONT. 24" O.C. SPACING AT REAR OF BUILDING 18" O.C. SPACING AT FRONT OF BUILDING JUNIPERUS SABINA 'TAMARISCIFOLIA' / TAM JUNIPER I GALLON 36" O.C. SPACING AT REAR PROP. LINE 30" O.C. 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