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Home My WebLink AboutPermit L05-037 - CITY OF TUKWILA - SPECIAL PERMISSION BUFFER REDUCTIONLOS -037 MACADAM WINTER GARDENS 5311 S 144 ST Ciy of f Tukwila Department of Community Development Steve Lancaster, Director TO: Bruce Fletcher, Applicant City of Tukwila, Owner King County Assessor, Accounting Division Washington State Department of Ecology NOTICE OF DECISION I. PROJECT INFORMATION CRITICAL AREA SENSITIVE AREA This letter serves as a notice of decision and is issued pursuant to TMC 18:104:170 on the following project and permit approval. Project File Number: L05 -037 Applicant: Bruce Fletcher, Director, Tukwila Parks and Recreation Dept. Type of Permit Applied for: Special Permission Director, Reduction of Buffer Widths July 11, 2005 Steven M. Mullet, Mayor Project Description: Construct a winter garden on the upland portions of a site that contains Type 1 and Type 3 wetlands. One of the trails in the garden will run through the buffers for the wetlands, clearing will occur and non- native plants will be installed. A buffer enhancement plan has been prepared for the project. Location: 5311 S. 144`" Street Associated Files: L05 -012, Tree Cutting Permit Comprehensive Plan Low Density Residential (LDR) Designation/Zoning District: Low Density Residential (LDR) CL SEPA Determination: The City SEPA Responsible Official has previously: X determined that this application does not require a SEPA threshold determination because it is categorically exempt. L determined that the project, as proposed, does not require a threshold determination under SEPA because it qualifies as a planned action pursuant to WAC 197 -11 -172, that the probable significant adverse environmental impacts of the project were adequately analyzed in the EIS previously prepared for the planned action and will implement the conditions and mitigation measures imposed by the planned action approval. y;AMacadam Winief GA Noticc of I ccision II. DECISION Page 1 of 3 07/08/2005 4:17 PM 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 L05 -037: Macadam Winter Garden Buffer Reduction Notice of Decision • �► Li determined that the project, as proposed, does not create a probable significant environmental impact and issued a Determination of Non- Significance (DNS), or L determined that the project does not create a probable significant environmental impact if specific mitigation conditions are imposed on the project and issued a Mitigated Determination of Non- Significance (MDNS) requiring compliance with those mitigation conditions, or ❑ determined that the project creates a probable significant environmental impact and required preparation of an Environmental Impact Statement (EIS) on the project. Decision on Substantive Permit: The Community Development Director has determined that the application for a Special Permission — Director for a sensitive area buffer reduction does comply with applicable City and state code requirements and has approved that application, subject to any conditions which are set forth in the Decision based on the findings and conclusions contained in the staff report. The condition of approval is listed below: 1. In lieu of a split rail fence to delineate the boundary between the garden area and the buffer area, signage shall be posted that reads "Protection of this natural area is in your care. Alteration or disturbance is prohibited pursuant to TMC 18.45. Please call the City of Tukwila for more information." In addition, shrubs will be used to form a natural fence to inhibit human encroachment on the wetland buffer and wetland. III. YOUR APPEAL RIGHTS The Decision on this Permit Application is a Type 2 decision pursuant to Tukwila Municipal Code §18.104.010. Other land use applications related to this project may still be pending. No administrative appeal of a DNS or an EIS is permitted. One administrative appeal to the Planning Commission of the Decision on the Permit itself is permitted. A party who is not satisfied with the outcome of the administrative appeal process may file an appeal in King County Superior Court from the Planning Commission decision. In order to appeal the Community Development Director's decision on the Permit Application, a written notice of appeal must be filed with the Department of Community Development within 14 days of the issuance of this Decision, that is by 5:00 p.m. Monday, July 25, 2005. The requirements for such appeals are set forth in Tukwila Municipal Code 18.116. All appeal materials shall be submitted to the Department of Community Development. Appeal materials MUST include: 1. The name of the appealing party. 2. The address and phone number of the appealing party; and if the appealing party is a corporation, association or other group, the address and phone number of a contact person authorized to receive notices on the appealing party's behalf. CL q;\Macadam Winter Garden/LOS-037 Notice of Decision IV. PROCEDURES AND TIME FOR APPEALING Page 2 of 3 07/08/2005 4:17 PM L05 -037: Macadam Winter Garden Buffer Reduction Notice of Decision • • 3. A statement identifying the decision being appealed and the alleged errors in the decision, including any specific challenge to an MDNS. 4. The Notice of Appeal shall identify (a) the specific errors of fact or errors in application of the law in the decision being appealed; (b) the harm suffered or anticipated by the appellant, and (c) the relief sought. The scope of an appeal shall be limited to matters or issues raised in the Notice of Appeal. V. APPEAL HEARINGS PROCESS Any administrative appeal regarding the Permit shall be conducted as an open record hearing before the Planning Commission based on the testimony and documentary evidence presented at the open record hearing. The Planning Commission decision on the appeal is the City's final decision. Any party wishing to challenge the Planning Commission decision on this application must file an appeal pursuant to the procedures and time limitations set forth in RCW 36.70C. An appeal challenging a DNS, an MDNS or an EIS may be included in such an appeal. If no appeal of the Planning Commission decision is properly filed in Superior Court within such time limit, the Decision on this permit will be final. The City's decision to issue a DNS, an MDNS or an EIS is final for this permit and any other pending permit applications for the development of the subject property. VI. INSPECTION OF INFORMATION ON THE APPLICATION Project materials including the application, any staff reports, and other studies related to the permits are available for inspection at the Tukwila Department of Community Development, 6300 Southcenter Blvd., Suite 100, Tukwila, Washington 98188 from Monday through Friday between 8:30 a.m. and 5:00 p.m. The project planner is Carol Lumb, who may be contacted at 206 - 431 -3661 for further information. Property owners affected by this decision may request a change in valuation for their property tax purposes. Contact the King County Assessor's Office for further information regarding property tax valuation changes. CL Department of Community Development City of Tukwila q; \Macadam Winter Garden/L05 -037 Notice of Decision Page 3 of 3 07/08/2005 4:17 PM IAN NB R Mini Mr F I _ IPLOS1 I gin Mr I �IIIr1:11!lir o 0 nom um&wsmor ta U r../LrT: �• S 148 St GIS IL 1 z m N W 0 Legend 111111 Tukwila City Limits 00 0 Type 2 Verified Salmonid Use NE Type 2 ( Salmonid) Watercourse w+► Type 3 Perennial Watercourse Type 3 (Perennial) Watercourse Buffer 80 Feet Type 4 Seasonal Watercourse Type 4 (Seasonal) Watercourse G✓e' Potential Wetlands SE 23/23/04 Type 1 Wetland Type 1 Wetland Buffer 100 Feet Buffer 100 Feet Type 2 Wetland Type 2 Wetland Buffer 80 Feet Type 3 Wetland Buffer 50 Feet ® Type 3 Wetland Buffer 50 Feet The location of areas d potential geologic instability, wetlands, wetland sizes and watercourses has not been surveyed and is approxrnate only. On -site verify ation of these sensitive sees is necessary and will occur through review of ndvidual development proposals. die kto SW 14/23/04 r NW Quarter 23 -23 -04 City of Tukwila Sensitive Area Map 1"e400' December 13, 2004 0 N_ M N W Z Dept. Of Community Development City of Tukwila AFFIDAVIT OF DISTRIBUTION I, eAvo t Lv H• ` HEREBY DECLARE THAT: 4% *G t. 'b ' ' ms-` - ' Notice of Public Hearing Determination of Non - Significance Notice of Public Meeting Mitigated Determination of Non - Significance 13 Board of Adjustment Agenda Pkt Project Number : 1 5` 031 Determination of Significance & Scoping Notice Board of Appeals Agenda Pkt Notice of Action Person requesting mailing: 4444 4. Planning Commission Agenda Pkt Official Notice Short Subdivision Agenda Notice of Application Shoreline Mgmt Permit Notice of Application for Shoreline Mgmt Permit FAX To Seattle Times Classifieds Mail: Gail Muller Classifieds PO Box 70 - Seattle WA 98111 Other m o of- .1er2 spa r1 - bO t✓ -- it. ee .d, rt a" " "r -�.. t't�c vt 4% *G t. 'b ' ' ms-` - ' 1ks5440 64r - Pit. -'e!/. NbTtce ' Ag—tAA —' Project Name: !#, Wince biaevti -' 13 r Project Number : 1 5` 031 Mailer's Signature: L/' { Person requesting mailing: 4444 4. Was mailed to each of the addresses listed on this li "' day of S�� i n the year 20 0.5 • Guy of Tukwila Department of Community Development Steve Lancaster, Director PLANNING DIVISION COMMENTS • DATE: July 3, 2007 CONTACT: Rick Still, Tukwila Parks and Recreation Dept. RE: D07 -227, Macadam Winter Garden ADDRESS: 5311 S. 144 Street This project was the subject of two land use application: L05 -012 (Special Permission Director, SAO) and L05 -037 (tree cutting permit) due to work that was proposed in a wetland buffer and the proposed removal of trees in a wetland buffer. The project has since been revised to exclude any removal of trees in the wetland buffer and to reduce the scale of work in the wetland buffer. As a result, the original conditions of approval for the land use applications are revised as follows below. If you have any questions on the requested revision, Carol Lumb is the planner assigned to the file and can be reached at 206 - 431 -3661. 1. Prior to the removal of any trees or site grading, the clearing limits must be clearly marked on -site to ensure there is no encroachment on the wetland or the wetland buffer enhancement area. 2. Fencing must be installed outside the clearing limits fencing adjacent to the 12 -inch coniferous fir that is being retained to prevent damage to the root system from equipment and vehicles. The fence should be installed well outside of the drip line of the tree (allow 1 foot of protective radius for every inch of trunk diameter). 3. Trees slated for removal that are in close proximity to trees being retained should be cut to the ground level and not pushed over with equipment. 4. In lieu of a split rail fence to delineate the boundary between the garden area and the buffer area, signage shall be posted that reads: "Protection of this natural area is in your care. Alteration or disturbance is prohibited pursuant to TMC 18.45. Please call the City of Tukwila for more information." In addition, shrubs will be used to form a natural fence to inhibit human encroachment on the wetland buffer and wetland. CL q: \General \2007 - Memos \D07- 277.doc Page 1 of I 07/03/2007 12:28:00 PM Steven M. Mullet, Mayor 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 July 8, 2005 BACKGROUND MITIGATION PLAN CL ID Cizy of Tukwila Department of Community Development Steve Lancaster, Director TO: Steve Lancaster, Director, Department of Community Development FM: Carol Lumb, Senior Planner\ Sandra Whiting, Urban Environmentalist RE: L05 -037: Buffer Reduction and Buffer Enhancement Plan for Macadam Winter Garden The City of Tukwila Parks and Recreation Department has prepared a plan to develop a winter garden on the upland portion of the Macadam Wetland, a site owned by the City of Tukwila. One of the trails in the garden lies within the 100 foot buffer of a Type 1 wetland and within the 50 foot buffer of a Type 3 wetland. Construction of the trail will involve removal of numerous significant trees, land clearing and planting of non - native vegetation as part of the plan for the winter garden development. As a result of this work in the buffers the Parks Department has requested a reduction in both buffers to 50 and 25 feet respectively. TMC 18.45.080 G. provides guidance on the reduction of standard wetland buffet widths. A buffer reduction may be allowed if: 1. Additional protection to wetlands will be provided through the implementation of a buffer enhancement plan; and 2. The existing condition of the buffer is degraded. The City's Urban Environmentalist has made several site visits to evaluate the condition of the wetland and buffer area in the vicinity of the garden trail. The wetland buffers understory vegetation consists mostly of invasive, non - native plants such as Himalayan blackberry, Japanese Knotweed and Herb Robert. These plants inhibit the function of the wetland as a healthy environment for wildlife and crowd out native plant species . A buffer enhancement plan has been prepared that includes over 400 trees and shrubs to increase the native plant diversity in the buffer and enhance habitat conditions for wildlife. q; \Macadam Winter Garden/Buffer Reduction - Wetland Mitigation Approval.doc Page 1 of 2 07/08/2005 1:37 PM Steven M. Mullet, Mayor 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 I \� Steve Lancaster, Director Department of Community Development Macadam Winter Garden Buffer Reduction and Wetland Mitigation Plan July 8, 2005 CONCLUSION • • The site meets the requirements of TMC 18.45.080 G. in that the current wetland buffer is degraded. Additional protection to the buffer will be provided by the implementation of the buffer enhancement plan that has been prepared. RECOMMENDATION Approve the buffer enhancement plan submitted on June 24, 2005 with the following condition: 1. In lieu of a split rail fence to delineate the boundary between the garden area and the buffer area, signage shall be posted that reads "Protection of this natural area is in your care. Alteration or disturbance is prohibited pursuant to TMC 18.45. Please call the City of Tukwila for more information." In addition, shrubs will be used to form a natural fence to inhibit human encroachment on the wetland buffer and wetland. Approved: ,1 8 zoos Steve Lancaster, Director ate Department of Community Development CL q; \Macadam Winter Garden/Buffer Reduction - Wetland Mitigation Approval.doc Page 2 of 2 07/07/2005 5:53 PM a city of Tukwila PLANNING DIVISION COMMENTS Department of Community Development Steve Lancaster, Director DATE: June 23, 2005 CONTACT: Paul Surek, Tukwila Parks Dept. RE: D05 -073 and D05 -074: Macadam Winter Garden ADDRESS: 5311 S. 144 Street The building permits are approved with the conditions listed below. If you have any questions, Carol Lumb is the planner assigned to the file and can be reached at 206 -431- 3661 or you may contact Sandra Whiting, Urban Environmentalist, at 431 -3663. CL 1. Prior to the removal of any trees or site grading, the clearing limits must be clearly marked on -site to ensure there is no encroachment on the wetland or the wetland buffer enhancement area. 2. Trees to be retained should also be clearly marked on -site. 3. It is recommended that fencing be installed around trees being retained to prevent damage from equipment and vehicles. Fences should be installed well outside of the drip line of the tree to be protected (allow 1 foot of protective radius for every inch of trunk diameter). 4. Clearing of vegetation within the fenced areas should be done by hand; topsoil in these areas is not to be stripped. 5. Trees slated for removal that are in close proximity to trees being retained should be cut to the ground level and not pushed over with equipment. 6. In lieu of a split rail fence to delineate the boundary between the garden area and the buffer area, signage shall be posted that reads: "Protection of this natural area is in your care. Alteration or disturbance is prohibited pursuant to TMC 18.45. Please call the City of Tukwila for more information." In addition, shrubs will be used to form a natural fence to inhibit human encroachment on the wetland buffer and wetland. q: \mydocs \General \2005- Memos \D05 -073; D05- 074.doc Page 1 of 1 07/08/2005 10:18 AM Steven M. Mullet, Mayor 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206 - 431 -3665 From: Sandra Whiting To: Carol Lumb Date: 7/6/05 8:40AM Subject: Re: Macadam Winter Garden Yes, we did discuss the fenced and signs during the site walk, but the landscape designer asked that in lieu of a fence that we just put in shrubs that would form a "natural fence" (to keep costs down). We did agree that signs would be posted (which I forgot to include in the enhancement plan), so I'm glad you remembered. »> Carol Lumb 07/01/05 04:37PM »> Hi Sandra: I am working on the memo approving the buffer reduction and wetland mitigation plan - I can't remember if we were going to require Parks to construct a split rail fence and post signage per TMC 18.45.060. I have a vague recollection of talking about this on -site with the landscape architect, but can't remember. I was going to add a condition to the approval to construct the fencing and post the signs unless you think that is a bad idea. Thanks. Carol • • • C of Tukwila Department of Community Development Steve Lancaster, Director PLANNING DIVISION COMMENTS DATE: June 23, 2005 CONTACT: Paul Surek, Tukwila Parks Dept. RE: D05 -073 and D05 -074: Macadam Winter Garden ADDRESS: 5311 S. 144 Street The building permits are approved with the conditions listed below. If you have any questions, Carol Lumb is the planner assigned to the file and can be reached at 206 -431- 3661 or you may contact Sandra Whiting, Urban Environmentalist, at 431 -3663. 1. Prior to the removal of any trees or site grading, the clearing limits must be clearly marked on -site to ensure there is no encroachment on the wetland or the wetland buffer enhancement area. 2. Trees to be retained should also be clearly marked on -site. 3. It is recommended that fencing be installed around trees being retained to prevent damage from equipment and vehicles. Fences should be installed well outside of the drip line of the tree to be protected (allow 1 foot of protective radius for every inch of trunk diameter). 4. Clearing of vegetation within the fenced areas should be done by hand; topsoil in these areas is not to be stripped. 5. Trees slated for removal that are in close proximity to trees being retained should be cut to the ground level and not pushed over with equipment. Steven M. Mullet, Mayor q: \mydocs \General \2005- Memos \DO5 -073; D05- 074.doc 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206 - 431 -3670 • Fax: 206- 431 -3665 1.0 Project Description and Existing Conditions 2.0 Goals and Objectives • RECENT JUN 2 3 2005 Macadam Winter Garden, Wetland Buffer Mitigation Enhancement Plan, oMMuNCrr Specifications DEVELOPMENT The City of Tukwila proposes to install a Winter Garden in the upland portion of the Macadam Wetland site at 5311 South 144 Street. A portion of the garden will be constructed within the wetland buffers of a Type I l l and a Type II wetland, both located to the south of the garden site. The Winter Garden will encroach upon the buffers of both wetlands. A buffer reduction has been requested under the Tukwila Sensitive Areas Ordinance. This Wetland Buffer Enhancement Plan has been prepared as mitigation for the buffer reduction. The existing buffer is primarily forested, mostly with cottonwood trees (Populus balsamifera, ssp. trichocarpa), willows near the wetland boundaries (Salix spp.), some non - native hawthorne (Crataequs spp.), some Oregon Ash (Fraxinus latifolia) and several Black Locust trees (Robinia pseudoacacia). Understory vegetation consists of mostly invasive, non - native plants, particularly Himalayan blackberry (Rubus procerus (discolor]), Japanese Knotweed (Polygonum cuspidatum), and Herb Robert (Geranium robertianum). Not all trees present in the buffer are shown on the drawing. Some rubbish is present in isolated locations in the buffer, with one concentration of materials (newspapers, asphalt, plastic, and unknown items) in the approximate location shown on the plan. The primary goal of the Buffer Enhancement Plan is to improve function and protection of wetlands in the remaining buffers of both wetlands. Specific objectives of the enhancement plan are to: 1) increase native plant diversity in the buffer; 2) enhance habitat conditions for wildlife; and 3) discourage uncontrolled public access through the buffer to the wetland. 3.0 Contractor's Qualifications Contractor must be experienced in environmental mitigation and restoration work, removal of invasive plants, and the installation of native plants. 4.0 Site Conditions Contractor shall immediately notify the City of any drainage or soil conditions that would be detrimental to the growth or survival of plants. 5.0 Plants 5.1 Quantities. Plant quantities are provided in the planting schedule provided in these specifications. 5.2 Origin. Plant materials shall be Northwest native plants, nursery grown in the Puget Sound region. Plants shall be true to species and subspecies. No cultivars or named varieties shall be used. Salvaged, dug plants may only be used upon approval of City of Tukwila staff. Copies of vendors' or growers' invoices or packing slips for all plants must be on site during • S installation. The invoice or packing slip should list species by scientific name, quantity, and date delivered. 5.3 Plant Names. Plant names shall conform to Flora of the Pacific Northwest by Hitchcock and Cronquist, University of Washington Press, 1973 and /or to A Field Guide to the Common Wetland Plants of Western Washington & Northwestern Oregon, ed. Sarah Spear Cooke, Seattle Audubon Society, 1997. 5.4 Delivery, handling. During shipping, plants shall be packed to provide protection against climate extremes, breakage and drying. Plants shall not be bound with wire or rope in a manner that could damage branches. Plant materials shall not be handled by the trunk, limbs, or foliage but only by the container, ball, box, or other protective structure. Bareroot plants, if authorized, shall be kept in bundles until planting and then handled carefully by the trunk or stem. Proper ventilation and prevention of damage to bark, branches, and root systems must be ensured. Plants shall be delivered as close to planting time as possible. 5.5 Storage. Plants in storage must be protected against any condition that is detrimental to their continued health and vigor. 5.6 Quality and condition. Plants shall be healthy and vigorous, well branched, with well - developed roots, normal in pattern of growth, and free of pests and diseases. Damaged, diseased, pest- infested, scraped, bruised, dried -out, burned, broken, or otherwise defective plants will be rejected. Woody plants with abrasions of the bark or sunscald will be rejected. Evergreen trees shall have single trunks and symmetrical well - developed form. Deciduous trees shall be single - trunked unless specified as multi- stemmed in the plant schedule. Trees with damaged, crooked, multiple or broken leaders will be rejected unless labeled and priced as conservation grade material by prior agreement. Plants must be container grown unless otherwise specified. 5.7 Roots. Container grown plants: root balls must hold together when the plant is removed from the pot, except that a small amount of loose soil may be on the top of the rootball. Plants must not be root - bound; there must be no circling roots present in any plant inspected. Rootballs that have cracked or broken when removed from the container shall be rejected. Bareroot plants: woody bareroot plants must have a dense, fibrous root system and be dormant when planted. 5.8 Inspection. Plants shall be subject to inspection and approval by the City for conformance to specifications at time of delivery on -site. Contractor must notify the City of Tukwila 48 hours or more in advance of deliveries so that inspection may be arranged. Approval of plant materials at any time shall not impair the subsequent right of inspection and rejection during progress of the work. Plants inspected on site and rejected for not meeting specifications must be removed immediately from site, or red - tagged and removed as soon as possible. 5.9 Plant sizes. Plants shall conform to sizes specified in the plant schedule unless substitutions are made as outlined in this contract. Height and spread dimensions specified refer to main body of plant and not branch or root tip to tip. Plant dimensions shall be measured when their branches or roots are in their normal position. Caliper measurement will be taken 6" above the ground for trees of 4" caliper or less and 12" above the ground for trees with larger caliper. Where a range of size is given, no plant shall be less than the minimum size and at least 50% of the plants shall be as large as the median of the size range. 2 • • 5.10 Plant Substitutions. It is the contractor's responsibility to obtain specified materials in advance if special growing, marketing or other arrangements must be made in order to supply specified materials. Substitution of plant materials not on the project list will not be permitted unless authorized in writing by the City. If proof is submitted that any plant material specified is not obtainable, a proposal will be considered for use of the nearest equivalent size or alternative species, with corresponding adjustment of contract price. Such proof will be substantiated and submitted in writing to the City at least 20 days prior to start of work under this section. 5.11 Warranty and Replacement. Plants must be guaranteed to be true to scientific name and specified size, and to be healthy and capable of vigorous growth. Plants not found meeting all of the required conditions must be removed from site and replaced immediately at the City's discretion. 6.0 Site Preparation 6.1 Protection of trees. Existing trees and some areas with a concentration of native plants in the buffer shall be maintained and protected. The contractor shall install temporary fencing around trees and areas to be protected to protect them from damage from heavy equipment. Special care shall be taken to avoid damaging shallow roots that extend well beyond drip lines. 6.2 Erosion /sedimentation control. The contractor shall install a silt fence along wetland edges to prevent erosion and sedimentation of the wetlands. 6.3 Removal of invasive plants. Invasive vegetation will be removed from the buffer mitigation area by scraping and digging to remove the roots through a combination of mechanical methods and hand removal methods. Special care must be taken to completely remove all rhizomes of Japanese Knotweed. In areas where the presence of trees and shallow roots makes mechanical removal impractical due to the likelihood of damage to the tree roots , hand removal shall be used. Hand removal shall also be used for removing invasive plants ear ? dry the edges of the wetland. All removed plant material shall be taken off -site to an authorized disposal/ composting facility. Areas suitable for removal with heavy equipment will be determined and marked during a pre - construction meeting on the site. Existing native plants to be retained in areas to be weeded by hand, will be marked by the City's wetland specialist prior to invasive plant removal. 6.4 Removal of rubbish. All rubbish encountered during site preparation will be removed and disposed of at an authorized solid waste facility. 6.5 Soil amendments. Organic matter (Cedar Grove Compost or approved equal) shall be applied to the entire site at a depth 3 -4 inches on the top of the soil and incorporated into the upper 8 -12 inches of soil, excluding those areas within the drip line of existing trees. 7.0 Installation of large woody debris Large segments of trunks, root wads, and large branches from tree removal on the site (Large Woody Debris — LWD) will be stored temporarily on site for later placement in the buffer areas. Storage area will be determined during pre- construction meeting. Six to eight pieces of LWD will be placed in each planting zone (see Buffer Enhancement Plan). Locations will be determined in the field in consultation with the City's wetland specialist after invasive plants have been removed. All woody material not used for LWD shall be hauled off -site or chipped and used on site as mulch. 3 8.0 Planting • S 8.1 Timing of planting. Unless otherwise approved by the City of Tukwila, planting shall occur between September 30 and January 15. Planting shall not be done when the ground is frozen, when there are freezing temperatures, or in excessively wet weather. 8.2 Plant locations. Plant locations shall be by the zones shown on the plan and in the planting schedule. Where specific locations for certain species, plants will be installed at the approximate spacing as depicted in the plant schedule. Locations may be changed based on field conditions, after consultation with the City of Tukwila. 8.3 Planting techniques. Plants shall be removed from their containers immediately prior to planting. Immediately prior to installation, root balls shall be examined and loosened throughout at least the outer 1 inch of root ball. Any damaged, matted, or circling roots shall be pruned. Plants shall be installed in accordance with the diagrams provided on sheets L101 -L105. Trees and shrubs shall not be staked, unless absolutely necessary. Any weeds around the newly installed plants shall be removed by hand at the time of installation. 9.0 Mulching All landscaped areas denuded of vegetation and the soil surface surrounding newly planted vegetation will be mulched with a minimum of 3" organic compost, coarse bark mulch, or certified weed -free straw. Mulch shall not be placed next to trunks of woody vegetation or covering the crowns of other vegetation. A space of at least 2" should be left around trunks and crowns. 10.0 Watering Plants shall be watered midway through backfilling the planting pit and upon completion of backfilling. Plants shall be watered a second time within 48 hours after installation. In the event of dry weather, plants shall be watered as necessary to insure survival throughout the first year after planting. 11.0 Maintenance. Maintenance will be performed by the City of Tukwila. 12.0 Monitoring. Monitoring will be conducted by the City of Tukwila. 4 Species Common name Size I # Spacing I Instructions Zone A Acer circinatum Vine Maple (multi- stemmed) 2 gal 8 Plant randomly throughout the zone Holodiscus discolor Ocean Spray 1 gal 15 Corylus cornuta Beaked Hazelnut 1 gal 10 Rosa gymnocarpa Bald Hip Rose 2 gal 20 Oemleria cerasiformis Indian Plum 1 gal 15 13i Ribes divaricatum Black Gooseberry 1 gal 10 Symphoricarpos albus Snowberry 1 gal 15 Tellima grandiflora Fringecup 4 in 20 Polystichum munitum Western Swordfern 1 gal 20 Lonicera ciliosa Orange Honeysuckle tube 6 Plant randomly throughout the zone, near base of trees Zone B Thuja plicata (TP) Western Red Cedar 5 gal 8 8 -10 ft o.c. Approximate locations as shown on drawing — plant in cleared area Corylus cornuta Beaked Hazelnut 1 gal 6 Plant randomly throughout the zone Rosa gymnocarpa Bald Hip Rose 2 gal 10 Oemleria cerasiformis Indian Plum 1 gal 10 to4 Symphoricarpos albus Snowberry 1 gal 8 Polystichum munitum Western Swordfern 1 gal 12 Tellima grandiflora Fringecup 4 in 10 Zone C Salix sitchensis Sitka Willow 1 gal 5 Plant randomly throughout the zone Cornus sericea (stolonifera) Red Osier Dogwood 1 gal 12 11 Zone D Alnus rubra Red Alder 6 Plant randomly throughout the zone Holodiscus discolor Ocean Spray 1 gal 10 Cornus sericea (stolonifera) Red Osier Dogwood 1 gal 15 H G Symphoricarpos albus Snowberry 1 gal 15 • Schedule of Plants by Planting Zone 5 Zone E Picea sitchensis Sitka Spruce 5 gal 5 Plant randomly throughout the zone Alnus rubra Red Alder 1 gal 5 Plant randomly throughout the zone in between spruce plants Lonicera involucrata Twinberry 1 gal 12 37, Sambucus racemosa Red Elderberry 1 gal 10 Zone F Salix sitchensis Sitka Willow 1 gal 10 Plant randomly close to wetland edges Cornus sericea (stolonifera) Red Osier Dogwood 1 gal 20 55' Plant randomly throughout the zone Rubus parviflorus Thimbleberry 1 gal 25 Zone G Salix sitchensis Sitka Willow 1 gal 2 Plant near wetland edge Rosa pisocarpa Swamp /Pea Rose 1 gal 20 Plant randomly throughout the zone Cornus sericea (stolonifera) Red Osier Dogwood 1 gal 15 Rubus parviflorus Thimbleberry 1 gal 15 Sambucus racemosa Red Elderberry 1 gal 5 Zone H Thuja plicata (TP) Western Red Cedar 5 gal 5 8 -10 ft o.c. Approximate locations as shown on drawing Fraxinus latifolia (FR) Oregon Ash 1 gal 4 8 -10 ft o.c. Approximate locations as shown on drawing Cornus sericea (stolonifera) Red Osier Dogwood 1 gal 20 L-1, Plant randomly throughout the zone Polystichum munitum Western Swordfern 1 gal 14 6 FOR STAFF USE ONLY Sierra Type: P -SP Planner: LA-A:)( L -t File Number: j_05 031 Application Complete (Date: ) Project File Number: 1P05 - 04? Application Incomplete (Date: ) Other File Numbers: x.05 DtZ 1)05 13 s CITY OF TUKWILA Department of Community Development 6300 Southcenter Boulevard, Tukwila, WA 98188 Telephone: (206) 431 -3670 FAX (206) 431 -3665 E - mail: tukplan@ci.tukwila.wa.us a SPECIAL PERMISSION DIRECTOR A PLICATION NAME OF PROJECT/DEVELOPMENT: LOCATION OF PROJECT/DEVELOPMENT: Give street address or, if vacant, indicate lot(s), block and subdivision, access street, and nearest intersection. LIST ALL TAX LOT NUMBERS. Quarter: Section: Township: Range: (This information may be found on your tax statement.) u. i> k-t acr -e_. `1 S 4 --'.. k,_.., La, l a 3 ►v 1.4 rt o N t DEVELOPMENT COORDINATOR : The individual who: • has decision making authority on behalf of the applicant in meetings with City staff, • has full responsibility for identifying and satisfying all relevant and sometimes overlapping development standards, and • is the primary contact with the City, to whom all notices and reports will be sent. S Address: L Zct oc� ^i'r,1 -,r t�oz).-I • Phone: 9 (.o FAX: (a.,v (0 `-t - 2s? t Signature: �,,�„ fsaA. Date: / 9 /b 5 " G: W PPHAN\LANDUSE. APP \SPD. doc. 09/11/03 June 9, 2005 BACKGROUND TREE REPLACEMENT PLAN INFORMATION NOTE: CL • Cizy of Tukwila Department of Community Development Steve Lancaster, Director TO: Steve Lancaster, Director, Department of Community Development FM: Carol Lumb, Seni Tanner Sandra Whiting, Urban Environmentalist RE: Approval of Tree Cutting Permit (L05 -012) and Wetland Mitigation Plan for Macadam Winter Garden, On March 8, 2005, the Tukwila Parks and Recreation Department submitted a tree - cutting permit to remove trees from a sensitive area prior to the creation of a winter garden in an area upland of the Macadam wetland. The trees will be removed from the buffer area for a Type 2 and Type 3 wetland. A total of ten (10) significant trees will be removed from the wetland buffer area. A total of 14 replacement trees are required to replace the significant trees that will be removed. The applicant has provided a landscaping plan for the winter garden that shows over 100 trees being planted as part of the overall garden plan. This will compensate for the trees that are being removed. Work will occur within the buffers of Type 2 and Type 3 wetlands; as a result, a Special Permission, Director land use application will also be needed for this project. A mitigation plan will be prepared to accompany the Special Permission request. This plan will be prepared by the Department of Community Development's Urban Environmentalist in the near future for review and approval by the Department Director. q; \Riverstone Homes /Wetland Mitigation Approval.doc 0 Page I of 2 06/07/2005 6:10 PM Steven M. Mullet, Mayor 6300 Southcenter Boulevard, Suite #100 • Tukwila, Washington 98188 • Phone: 206- 431 -3670 • Fax: 206 - 431 -3665 • • Department of Community Development Macadam Winter Garden June 9, 2005 RECOMMENDATION Approve the L05 -012, Tree Cutting permit for the Macadam Winter Garden.. Approved: Steve Lancaster, Director Department of Community Development CL q; \Macadam Winter Garden/Tree Cuttine Permit Approval.doc Date Page 2 of 2 06 /08/2005 4:16 PM March 17, 2005 • City of Tukwila Department of Community Development Steve Lancaster, Director NOTICE OF INCOMPLETE APPLICATION Steven M. Mullet, Mayor TO: Paul Surek, Parks Maintenance and Operations Superintendent FM: Carol Lumb, Senior Planner 64,w RE: L05 -012, Tree Cutting Permit for Macadam Winter Garden Your application for a tree cutting permit located at 5311 South 144 Street, the site of the Macadam Winter Garden Park, has been found to be incomplete on March 16, 2005. In order to complete the application, please provide the following: 1. Please revise the Existing Tree Plan to identify the wetland edge and clarify the buffer location. A wetland buffer area of 100 feet has been identified, but there is also what appears to be a wetland marker with a distance of 25 feet identified to the clearing limit. If you are working within the 100 foot buffer area, a Special Permission Director Application to request a buffer reduction must be completed. Please be aware that the maximum reduction that can be permitted is 50 %, if a mitigation plan is provided. It is not clear whether any work is taking place within the first 50 feet of the wetland edge. The application should include a short description of the proposed Winter Garden and any wetland enhancements proposed for the buffer area etc. 2. Is there a wetland study that has been prepared for the site? If so, please provide 2 copies for the file. Upon receipt of these items, the City will re- review them and determine within 14 days whether the application is complete. The applications will expire if we do not receive the additional information within ninety days of the date of this letter unless an extension is granted pursuant to Section 18.105.070(E). Please let me know if you have any questions — I can be reached at 431 -3661. Enclosure: Special Permission — Director Application cc: Nora Gierloff, Planning Manager Bruce Fletcher, Director, Department of Parks and Recreation q: \Macadam Winter Garden \L05 -012 Incomplete.doc A100 .4nathrpnter Roulavarrl_ .Same #100 • Tukwila_ Washington 98188 • Phone: 206- 431 -3670 • Fax: 206 - 431 -3665 I ;I la 1 30' C MK :0 ENYS:at • - r OLD FLAG 157 - ?e YIe efile • \ tj • • .. • ;#,. S'&. L9 \ \v/e4444 , e I \ \ .. t. N--- • -- - 1-. .' , •' . 64 . • ‘4.104 ---,b°• I I , - .r. ..... . ;.. ... , , • , , .. , , \ .- . , , , \ , .,„ \I ,..._ ; , It. ; I '41 4 Oe Wet : LL) 1 • 1 , 1 • r • \ L O 5 10 ( ( 1- — t } NOTE: . , .-- . , _ , ,,, • ,,, , 58 - -' . INFORMATION AND SPECIFICATIONS ON THIS DRAWING PROVIDED BY SANDRA WHITING AT THE ! . CITY OF TUKWILA PLANNING DEPT. / . I --- --- , ..) i _ .. ' , \ c / I --, ,...36 - ....-_____.— \ ,) ,---' --"' SCALE: 1" .10' 20 30 Johnson Braund DESIGN GROUP, INC. Arobitecture LandscaFeArebtaatare Planning W5200 52ne Avenue South Sete 200 Seattle. WA 92188 Phone 206.768.8300 Fax 200.766E080 www.lbdg.cam Greg L Allwine, AlA Melvin R. Easter, ASIA ISSUE DATES w CD w z gg 2 2 < < < PROJECT # 0421 FILE NAME: 0421 DRAWN BY: SW BUFFER ENHANCEMENT PLAN L.106 NOT FOR CONSTRUCTION 1111=0:711.4.11(Ml■ RECE!VEf IJUN 2 3 2005' COMMUNITY DEVELOPMENT J ohnson Braund DESIGN CROUP. INC. Architecture Landscape Architecture Planning 15200 55 200 South Seattle. WA 98188 Mar 208.78 Fes 208.786. WH^v.lhdg.00m Greg L. Allwine. AIA Melvin R. Easter. ASLA ISSUE DATES PROJECT II 00421 -L106 FILE NAME: IIRAWN BY. SW ❑ ❑ SITE MAP PROJECT TEAM LANDSCAPE ARCHITECT: MACADAM WINTER GARDEN II JOHNSON BRAUND DESIGN GROUP, INC. 15200 52ND AVENUE SOUTH SUITE 200 SEATTLE, WA 98188 TEL: (206) 766 -8300 FAX: (206) 766 -8080 CONTACT: MICHAEL BROWN, ASLA PREPARED FOR: CITY OF TUKWILA PARKS & RECREATION DEPARTMENT 12424 42ND AVENUE SOUTH TUKWILA, WASHINGTON 98168 CIVIL ENGINEER: PACIFIC ENGINEERING DESIGN, LLC : • 4180 LIND AVE. SW. RENTON, WA 98055 TEL: (425) 251 -8811 FAX: (425) 251 -8880 CONTACT: GREG DIENER, PE SHEET INDEX L001 COVER SHEET L010 SITE PLAN & LAYOUT PLAN L011 GRADING PLAN L012 . • TREE•PLAN L020 ; SITE L021. ..SITEDETAILS L022 METAL FABRICATION DETAILS SO1 STRUCTURAL DETAILS C01 •COVER SHEET ( NOTES AND SPECIFICATIONS PLAN & PROFILE (13RD AVE. S.) C04 PLAN (144th ST. S) & DETAILS CO5 TEMPORARY EROSION CONTROL PLAN C06 • DETAILS L101.._ _aWIMTERGEMS ROOM. PLANTING PLAN L102 DWARFCONIFERS ROOM PLANTING PLAN L103'' ' THEAIVER WOODS ROOM PLANTING PLAN L104 MAPLE WAY ROOM,-PLANTING PLAN L105 NATURE'S'VEIL PLANTING PLAN L106 BUFFER;ENHANCEMENT PLAN L107 BUF SPECIFICATIONS 1201_': IRRIGATION PLAN :... 1202 IRRIGATION NOTES & DETAILS CO2 CO3 • :_STRUCTURAL :.ENGINEER: ❑ ❑ D'AMATO CONVERSANO INC. 10900 NE 4TH STREET, STE 1200 BELLEVUE, WA 98004 TEL: (425) 827 -2238 FAX: (425) 827 -8986 CONTACT: MARK D'AMATO, PE APPROVED I . �,p l 7 71ISION f!U mTtT U UK KWIA JUN 24 2005 PERMIT CENTER Dos - ors HIM] Johnson Braund DESIGN CROUP. INC. AmLitechve teedrenpe A, . 15200 52nd Avenue south Setts 200 Seattle. WA 88168 Phone 206.788.8300 Fax 206.7888080 Greg L AIIWine. AIA Melvin R. Easter, ASIA STATE OF VASNINGTON REGISTERED E AR C iT CERTIFICATE 80.398 ISSUE DATES Z W 0 cc C9 W I- Z a Q Q PROJECT # 0421 FILE NAME: 0421 -L001 DRAWN BY: LP /MB COVER SHEET LOS - O 3 "l L001 S NOT FOR CONSTRUCTION ueme'oruc`e+ Species I Common name I Size I • (Spacing I Instructions Zone A •. -r.ra :, • .: •, cr:! : �� stemmed) 5 • Plant randomly „ ,,. throughout the zone - ': n ran..m throughout the zone Holodlscus discolor Ocean • - 5 15 Plant randomly a throughout the zone In between spruce plants ✓rrus. ... :1711T:r • R7: ut 1 gal t Rosa gymnocarpa Bald Hlp Rose 2 gal 20 Oemierla cereaitarmis Indian Plum 1 gal 15 10 Ribes dlvericatum Black Gooseberry 1 gal 10 1 gal Symphodcarpos albus Snowbeny I gal 15 I hlmbleberry Tellime gra difora Fdngawp 4 In 20 Salix sitchensis osa P socarpa Polystichum munitum Western Swoidfem 1 gal 20 Plant near wetland edge an ran 077 throughout the zone Lonicera cillosa Orange Haaysudde tube 6 Plant randomly throughout the zone, near base of trees Zone B Thuja plicate (TP) Corylus cxxnuta Western Red Cedar Beaked Hazelnut 5 gal 1 gal 8 6 8-10 ft o.c. Approximate locations as shown on drawing — plant In cleared area Plant randomly throughout the zone /ynuccarpa Bald Hip Rose 2 gal 10 1 gal Oem(eda cerasiforrds Indian Phan 1 gal 10 Red Osier Dogwood Symphoricarpos albus Snowbeny 1 gal 8 Polystichum munitum Polyatichum munitum Western Swadfem 1 gal 12 Telilma grardiflore Fringecrp 4 in 10 Zone G Salt( sitchensis Sitlra WIllow 1 gal 5 Plant randomly throughout the zone ( Comus sericea ll ) Red Osier Dogwood 1 gal 12 one Alnus rubra Red Alder 6 Plant randomly throughout the zone Holodlscus discolor Ocean Spray 1 gal 10 Comus sericea (stolonifera) Red Oafer Dogwood 1 gal 15 Symphodcarpos albus Snowbeny 1 gal 15 Zone E Picea sitchensis Sitka Spruce 5 gal 5 Plant randomly „ ,,. throughout the zone Alnus rubra Red Alder 1 gal 5 Plant randomly a throughout the zone In between spruce plants Lonicera involucrata Twinbeny 1 gal 12 Red Elderberry 1 gal 10 one Salix sitchensis Sitka Willow 1 gal 10 Plant randomly close to wetland edges Comus sencea (stolonifera) Red Osier Dogwood 1 gal tU Plant randomly throughout the zone Rubus parvitlorus I hlmbleberry 1 gal 25 Zone G Salix sitchensis osa P socarpa Sitka Willow LP,'FT �T�(lk7 1 gal 2 lea Plant near wetland edge an ran 077 throughout the zone • onus sencea ( stolonifera) -U•US •..,nt'T.Trf♦ ucus recemosa - • S Sr Dogwood a... via Zone Thuja plicate (TP) Western Red Cedar 5 gal 5 8-10 ft o.c. Approximate locatons. . as shown on drawing Fraxinus latifoga (FR) Oregon Ash 1 gal 4 8-10 ft o.c. Approximate locations as shown on drawing Comus sericea ( stolonifera) Red Osier Dogwood 1 gal 20 Plant randomly throughout the zone Polystichum munitum Western Swordfem 1 gal 14 Macadam Winter Garden, Wetland Buffer Mitigation Enhancement Plan, Specifications 1.0 Project Description and adding Conditions The city of Tukwila proposes to Install a Winter Garden In the upland portion of the Macadam Wetland site at 5311 South 144th Street A portion of the garden will be constructed within the wetland buffers of a Type 0I and a Type 0 wetland, both located to the south of the garden eau. The Winter Garden won encroach upon the buffers of both wetlands. A buffer reduction has been requested under the Tukwila Sensitive Areas Ordinance. TMs Wetland Buffer Enhancement Plan has been prepared as m0lgation for the buffer redudlcn. The existing buffer is primarily forested, mostly with cottonwood trees (Populua balsemifere, asp. btrhocarpa), willows near the wetland boundaries (Salk spa), scene non -table hawtho ne (Crateequs spa.), some Oregon Ash (Frexbn s latlfola) and several Black Lociat trees (Robtta pse udoacada). Understory vegetation consists of mostly tnvasIve, non-native Plants, DantadaM Himalayan Mediberny (Rubus procerue "discolor)), Japanese Knotweed (PC a um cuspidatum), and Herb Robert (Gerankrn robeNanum). Not all trees present In the buffer are shown on the drawing. Some rubbish Is present In isolated locations in the buffer, with one concentration of materials (newspapers, asphaR plastic, and unknown item) In the approximate location shown on the plan. 2.0 Goals and Objectives The primary goal of the Buffer Enhancement Plan is to Improve function and protection of wetlands in the remaining buffers of both wetlands. Specific objectives of the enhancement plan are to: 1) Increase native plant diversity In the buffer, 2) enhance habitat conditions for wfldgfe: and 3) discourage uncontrolled public access through the buffer to the wetland. 3.0 Contractors Qualification Contractor must be experienced in environmental mitigation and restoration work, removal of Invasive plants. and the Installation of native plants. 4.0 Site Conditions Contractor shall City of � e or soli conditions that would be detrimental to the growth or survival of plants. 5.0 Plants 5.1 Quantities. Plant quantities we provided In the planting schedule provided In these specifications. / OrWin. Plant materials shall be Northwest native plants, nursery grown In the Puget Sound region. Plants shall be true to spades and subspecies. No outwore or named varieties shall be used. Salvaged, dug plants may only be used upon approval of City of Tukwila staff. Copies of vendors' or growers' Invoices or paddng slips for all plants must be on site during Schedule of Plants by Planting Zone installation. The invoice or packing slip should fist species by scientific c name. quantity. and date delivered. 5t Plant Names. Plant names shall conform to Flora of the Pacific Northwest by Hitchcock and Cronquist, University of Washington Press, 1973 and/or to A Field Guide to the Common Wetland Plants of Western Washington & Northwestern Oregon, ed. Sarah Spear Cooke, Seattle Audubon Sodety,1997. 541 Delivery. handling. During shipping, plants shall be packed to provide protection against climate extremes, breakage and drying. Plants shall not be bound with wire or rope In a manner that could damage branches. Plant materials shall not be handled by the trunk limbs, or foliage but only by the container, ball, box, or other protective structure. Bareroot plants, If authorized, shall be kept in bundles until plandg and then handled carefully by the tnmk or stem. Proper ventilation and prevention of damage to bark, branches, and root systems must be ensured. Plants shall be delivered as dose to planting time as possible. 5.4< Storage. Plants In storage must be protected against any condition that Is detrimental to their continued health and vigor. 5.5y Quality and condition. Plants shall be healthy and vigorous, well branched, with well- developed roots, normal in pattern of growth, and free of pests and diseases. Damaged, diseased, pest-infested, scraped, bruised, dried -out, burned, broken, or otherwise defective plants will be rejected. Woody plants with abrasions of the bark or sunscald will be rejected. Evergreen trees shall have single trunks and symmetrical well - developed form. Deciduous trees shall be single - bunked unless specified as mufti- stemmed In the plant schedule. Trees with damaged, Crooked. multiple Cr broken leaders will be rejected unless labeled and priced as conservation grade material by prior agreement Plants must be container grown unless otherwise specified. 5.8 1 Roots. Container grown plants: root balls must hold together when the plant is removed barn the pot, except that a small amount of loose soil may be on the top of the rootbali. Plants must not be root-bound; there must be no circling roots present In any plant Inspected. Rootballs that have cracked or broken when removed from the container shall be rejected. Bareroot plants woody bareroot plants must have a dense, fibrous root system and be dormant when planted. 5.f$ Inspection. Plants shall be subject to Inspection and approval by the City for conformance to specifications at dine of delivery on- site. Contractor must notify the City of Tukwila 48 hours or more in advance of deliveries so that Inspection may be arranged. Approval of plant materials at any time shall not impair the subsequent right of Inspection and rejection during progress of the work Plants inspected on site and rejected for not meeting specifications must be removed immediately from site, or red - tagged end removed as soon as possible. 5.Jfct Plant sizes. Plants shall conform to sizes specified in the plant schedule unless substitutions er made as outlined in this contract Height and spread dimensions specified refer to main body of plant and of branch or root tip to tip. Plant dimensions shall be measured when their branches or roots are in their normal position. Caliper measurement will be taken 6' above the ground for trees of 4' caliper or less and 12' above the ground for trees with larger caliper. Where a range of size Is given, no plant shag be Less than the minimum size and at least 50% of the plants shall be as large as the median of the sae range. ` l 5.10 Plant Substitutions. It Is the contractors responsibility to obtain specified materials In advance if special growing, marketing or other arrangements must be made in order to supply specified materials. Substitution of plant materials not on the project list will not be permitted unless authorized In writing by the City. If proof Is submitted that any plant material specified Is not obtainable, a proposal will be considered for use of the nearest equivalent size or alternative species, with correspond Ing adjustment of contract price. Such proof will be substantiated and submitted in writing to the City at least 20 days prior to start of work under this section. 5. 53 Warranty and Replacement. Plants must be guaranteed to be true to scientific name and specified size, and to be healthy and capable of vigorous growth. Plants not found meeting all of the required conditions must be removed from site and replaced immediately at the City's discretion. 8.0 Site Preparation 8.1 Protection dimes. Existing trees and some areas with a concentration of native plants in the buffer shag be maintained and protected. The contractor shall install temporary fencing around trees and areas to be protected to protect them from damage from heavy equipment Special care shall be taken to avoid damaging shallow roots that extend well beyond drip lines. 8.2 Erosion/sedimentation control. The contractor shall Install a silt fence along wetland edges to prevent erosion and sedimentation of the wetlands. 6.3 Removal of Invasive plants. Invasive vegetation wild be removed from the buffer mitigation area by scraping and digging to remove the roots through a combination of mechanical methods and hand removal . -care must be to completely remove all rhizomes of Japanese Knotweed. In areas ' where the presence of trees and shallow roots makes mechanical removal impractical due to the likelihood of damage to the tree roots, hand removal shall be used. Hand removal shall also be used for removing invasive plants near the edges of the wetland. All removed plant material shall be taken off-site to an authorized disposal/ composting facility. Areas suitable for removal with heavy equipment will be determined and marked during a pre-construction meeting on the site. Eldsting native plants to be retained In areas to be weeded by hand, will be marked by the Citys wetland specialist prior to Invasive plant removal. 8,4 Removal of rubbish. All rubbish encountered during site preparation will be removed and disposed of at an authorized solid waste facility. 8.5 Sob amendments. Organic matter (Cedar Grove Compost or approved equal) that be applied to the entire site at a depth 3-4 Inches on the top of the soil and incorporated Into the upper 8-12 inches of soli, excluding those areas within the drip Me of existing trees. 7.0 Installation of large woody debris Large segments of trunks. root wads, and large branches from tree removal on the site (Large Woody Debris - LWD) will be stored temporarily on site for later placement in the buffer areas. Storage area will be determined during preconstructlon meeting. Six to eight pieces of LWD will be placed In each planting zone (see Buffer Enhancement Plan). Locations wqi be determined in the field In consrldon with the City's wetly ,epedallst after invasive plants have been removed. All woody material r..: used for LWD shall be hauled off-elte or chipped and used on site as mulch. 8.0 1 Timing of planing. Unless otherwise approved by the City of Tukwila, planting shall occur between • September 30 and January 15. Planting shall not be done when the ground is frozen, when there are freezing temperatures, or in excessively wet weather 82 • Plant locations. Plant locations shall be by the zones shown on the plan and in the planting schedule. Where-specific locations for certain species, plants will be Installed at the approximate spacing as depicted In the plant schedule. Locations may be changed based on field conditions, after consultation with the City of Tukwila • „ 8.3, c Planting techniques. Plants shall be removed from their containers Immediately prior to planting. Immediately prior to installation, root balls shall be examined and loosened throughout at least the outer 1 Inch.of root ball. Any damaged, matted, or circling roots shall be pruned. Plants shall be installed In accordance with the diagrams provided on sheets L101 -L105. Trees and shrubs shag of be staked, unless absolutely necessary. Any weeds around the newly installed plants shall be removed by hand at the time of installation. 9.0 Mulching AO landscaped areas denuded of vegetation and the soil surface surrounding newly planted vegetation will be mulched with a minimum of 3' organic compost, coarse bark mulch, or certified weed -free straw. Mulch shall of be placed next to bunks of woody vegetation or covering the crowns of other vegetation. A space of at least 2 should be left around trunks and Crowns. 10.0. Watering Plants shall be watered midway through baddNing the planting pit and upon completion of baddhling. Plants shall be watered a second time within 48 hours after Installation. In the event of dry weather, plants shall be watered as necessary to insure survival throughout the first year after planting. 11.0. Maintenance. Maintenance will be performed by the City of Tukwila. 12.0 Monitoring. Monitoring will be conducted by the City of Tukwila. 077V 0, JUN 2 r, PERMIT °ENTER NOTE: INFORMATION AND SPECIFICATIONS ON THIS DRAWING PROVIDED BY SANDRA WHITING AT THE CITY OF TUKWiLA PLANNING DEPT. Johnson Braund DESIGN GROUP. INC. Architecture Lampe Aire Planning Greg L AlIwine, AIA Melvin R. Easter, ASLA REV 111 15200 52rtd AMMO semi SUDS 200 Swiss. WA fnala8 Phan• 206786.9300 Fat 206788.8090 www.jbdg cem ISSUE DATES DATE 3-24-05 z mo a t.L c F- z 2 z = 0 3 C a d PERMIT SET DESCR. PROJECT # 0421 FILE NAME: 0421 -L107 DRAWN BY: SW BUFFER ENHANCEMENT SPECIFICATIONS L107