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98-100582FEB (;I, i - SUILDIN,3 bjjyvA Y � � v � �u�� `J. SCALE.*1 - 0 LEGEND EXISTING MITIGATION - �i AND ENHANCEMENT AREAS - -; - _ NEW WETLAND #4 MITIGATION AREA HERITAGE WOODS Wetland Mitigation Plan File No.: SUB98-0003 (98-1-2890-000-00-SU) i Z_ \�Ff1 7 E-T L-A,,N L �rt 't, S 25B'1N �Q�" u < of v' ••b': Sr S S2!*1 C-.Q vmi > 2V 2csn-�cLS S: Z11T, r > G H ., o rP _. $2820 .v 5,283RD w 702t?t1.. y .. .ew .,. ;.... ti s �<< e e d 'a9QV m A .... 0S2641H. .y 0 -A N '� 70 „�! O•_ ON w n o Woodmont Beach A y. ° > w .G 0 -. >-y ' SiH87H- h5...g. (`. _� � 3268TH. .�.. 25J � gtiYtH L < w N ta7 o tarlake s271sr sz7ana_i��r, m S271.NO .. !q- h [t N �� m - ,y4- �} s 273RO CRESTWOWRO N. s 273ku S:2?47N g . �_. 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S303RO `p VICINITY'M"AP cfIEo,T!01-4 Ad. tt s Af2.r:A PF-A: A., SITE PLAN Via, Irr. -------I MWPLAN ffff!)0v,m, �G tiCV— >kz 10 DATE BY REVISION J z W 4_4 mom 4­4 V+V n M N TT Y `�vr �- n M n c V CC$ z }� l J :� u :J O �I� 0��n • a •r, 'J M n Z r Z U r>^' U MITTED TR i SCALE: 1 10' .�G-GQiS. t SITE PL.AN HERITAGE WOODS Wetland Mitigation Plan File No.: SUB98-0003 (98-1-2890-000-00-SU) P©wc� L�3 4174o PLANT SCHEDULE S%-mbol Common Name Scientific Naine Qty. Size ~itka Spruce Picea sitchensis 18 4-6 ft Red Alder Alnus rubra 9 5-6 ft . Quaking .Aspen Populus tremuloides S 5-6 ft a Y Oregon Ash I' raxinus latifolia 8 4-6 ft J 0 Salmonbet y Rubus spectabilis 57 1 gal Nootka Rose Rosa nutkana 4? 1 gal :>1` x Pacific Ninebark Phsyocarpus capitatus 1: 1 gal A A ° Willow Salix sp. 45 cuttings Red -osier Dogwood Cornus stolonifera 57 cuttings Slough Sedge Carex obnupta 100 barero( Note Willow and Red -osier dogwood symbols represent 3 cuttings each. PLANTING AND STAKING DETAIL R J ><.tri P� .ail ircaxau a,inirmnt aiCAt I � ,cit:incuu'. v:id!It GRASS SEEDING Grass Name Proportion By Wt. % Purity % Germination Red fescue 3 5 % 90% 901% Redtop Bentgrass 35% 92% 8% Meadow Foxtail 30% 90% 80% Seed all areas of wetland mitigation and restoration areas. Application Rate 40 lbs per acre: 0.06 acres Total amount of seed, 2.5 lbs Broadcast seed application by hand. CUTTINGS DETAIL N. i �l Willow or Do,-,+ood Cutting 1 \4itt. 6 iu NO [SATE By RE VISION 'l. U) 0 U� z� s t O 4 O ^ -� 4 � C) O N O ;�. O O woo 00 Z FiN ►� U U) Ir ��, Z � Q O M� M M !� P1 CI' N r � r^ ! v E n $ ggEE„ss44�§ gf � A n � t 4 AP � P'l NORTH i d o Zv 4u S 10' r-- i 1 67,A"Vot _.. F9 L-1042, Fia,4� 382 Q� r w li 380 Z Z O 378 A w 376 0 N 374 Q 372 O Wetland Creation Area,* 2, i 5 a square feet Fill Material to be Removed: 153 cubic yards Topsoil to be Placed: 102 cubic yards CROSS 380 w w 378�� Z ^� 0 h 376 w J W 374 w 372 a 370 SECTION TIAII O 10 20 30 WIDTH IN FEET CROSS SECTION TIBIT '>C, o Mrr1o,+4Ttcv�► �A 10 20 30 i, (rncTA:n ct., 4.F_v., sO 60 70 WIDTH IN FEET FIL.iER FENCE DETAIL Lxca \ ttc it 4 e 4 ' trench up,lopc The iilltt m lMrial Sho +ld cxtcnd ime. lr�n h ;tClCrIll the trench and con- Bet the SOtI i APR 2 4, 1.0 Executive Summary 1.1 Mitigation Sequencing: ­Fhe applicant proposes to construct 2,750 square feet of wetland to replace the shortfall (deficit) in \vetland mitigation area constructed per the approved wetland mitigation plans for tile Heritage Woods property as designed by del Moral and Associates and Kusinski C:onsultiilg Services and the area of Wetland "100" that has been constricted on the Lakchavcn Utility casement:. 1.2 Wetland Mitigation: The shortfall (deficit) in wetland 1nit:i".lation area will be replaced by creating 2,750 sgttare feet ot-J'alustrine Forested Wetland (PFO). at a 1:1 exchange ratio, adjacent to the existing \\`ctland `'13".. south of the existing pond. 1.3 The mitigation area will he planted with native plant species. native plant :species will increase plant diversity lrt:tbi.tat and prevent the establishment of invasive plant species. 1.4 l;stimatcd time to reach Perforriiarice Standards: 5 years. 2.0 Project Location The property is located northwest of tilei11t1'hSc CtIC)il i31 �'N✓illlt��t y'` Road South and South 282nd. Street in federal `,Nlay, \ ashinLrton. .0 Responsible Parties Pro . crty Owner Schneider Homes, Inc. 65' `` Southcenter Blvd., Suite 41 Tuk(\%ila_ Washington 98155 (206) 248-24 71 ;_jai% lronmel�tal Consultant J. S. Jones and Associates, lnc. 3408 52nd Place N E Tacoma, Washington 98422 (253) 942-7131 4.0 Goals mitigation is to create palustrine forested wetland to replace The primary goal of` the shcirtfall in constructed wetlandmitigation area and the wetland area "Onstructed on the Lakchaven Utility casement Without Lakchavcn approval. 5,0 Objectives The specific measures necessary to reach the primary goals are to expand the existing wetland by grading and replanting with native plant species and to maintain and monitor until performance standards are met. 6.0 Performance Standards 6.1. Palustrine Forested Wetland Performanc; Standards: 6.1.1 Emergent cover: 60 %, by year onc,80 % by year three, 90 ° 0 by year five b. l .2 Shrub and Tree Cover Performance Standards: 10 % by year one, >30"0 �, �_. . uy year two, and -> 50 �/� by year three Invasive, plant specie.: shall not comprise more than 101!/o cover. 6.1.3 hydrology Perfort-nance Standards: Saturation to the soft surface and I 0-11•oughout the soils profile, from 0 to 12 inches, for two consecutive wcel:s i .betNvicen December and. April. i i i tViitigaticin AArea -1)ei Moral Kuc�i�ski- �I:,akehaveny As bin t as of designed Designed_ Easement.: Dec 2000 Are a # i 2,700 sf 0 -- �. Area #4 7,750 sf- _ rea _A#5 - __. _ _.._.___ __._._.___T . 95 sf Area #7 1,475 sf - ---- _____-_ 2,744 sf Area U.r'_.A. - A 3,525 sf _.__.__.. _____..._ _.____.. �_. ____........___--- j wetland 100 3,820 si' 3F>1 sf 3,459 sf' Total 22,824 sf 3,820sf-.------ j Total I)esigned Area: 26,645 sf Total As -built (Dec. 2000): 20,416 sf Total Wetland to be Mitigated: 22,825 sf I Total Wetland shortage: 2,409 sf Mitigation Area 4 (JSJ 2002): 2,750 sf i HERITAGE WOODS Wetland Mitigation Plan File No.: SUB98-0003 (98-1-2890-000-00-SU) 7.0 Monitoring Methods Monitoring period is five years from complete installation ofplant materials. The Monitoring period may be extended at City of federal Way discretion if final inspection shows mitigation has not achieved perfonmance standards, until performance standards have been met. Monitoring reports will be submitted to City of Federal Way by October 31st of every year throughout the monitoring period, starting the year of installation. All monitoring reports must contain vegetation transect data, percent survival and health, conditions harmful to initigation, maintenance recommendations, and four color photographs taken from photopoints to be located in the field. 8.0 Hydrology Monitoring Three sample locations will be located during the first monitoring event in Wetland "D" and the proposed mitigation area. '.Monitoring method will be the Soil Conservation Service (SCS) hand ball test. Soil saturation will be determined at the surface. 6 inches and 12 inches. Hydrology monitoring will be done on the 15th of each month between December and April. 9.0 Contingencies If there is a significant problem with the mitigation achieving its performance standards, the bond -holder shall work with City of Federal Way to develop a contingency plan. Contingency plans can include, but are not limited to: regrading, additional plant installation, erosion control, modifications to hydrology and plant sub--itutions of type, size, quantity and location. Such contingency plans shall be submitted to City of Federal Way by December 31 st of any year when deficiencies are discovered. If failure is substantial, City of Federal Way will exten.-„_ _le monitoring period. - 10.0 Design 10.1 Vegetation 10.1.1 All plants specified will be native to the Puget Sound lowlands 10.1.2 Shade -dependant species are to be specified only where shade exists at tirne of planting. 10..1.3 No bare -root material shall be specified in anaerobic soil conditions (typically, where plants will be innundated for more than two weeks through the growing season). 10.1.4 Plant selection and placement will be guided by moisture, light and actual site conditions. 10.1.5 All trees and shrubs must be mulched biannually with 2" of mulch, to the drip line of the plant. 10.1.6 Soils will be over excavated twelve inches and replaced with six inches of compost and six inches of organic topsoil, mixed thoroughly with a rototiller. i 1.0 Installation Schedule For most projects, installation occurs in three phases, each followed by City of Federal Way inspection. Installation cannot proceed from one phase to the next without approval fi•om City of Federal Way. City of Federal Way must recievc notice that construction phase of installation has begun by date noted on Bond, generally within 60 days of bonding. 11.1 Pre -Construction 1 1.1.1 Defines limits of work and limits of grading. 1 1.1.2 Filter fencing will be installed at the limits of grading, see plan. 1 1.1.3 Any other work required by City of Federal Way. 11.1.4 Inspection verifies limits, structure location, etc. I L2 Construction 1.1.2.1 Every site must be deconsolidated and soil amended. 11.2.2 Where grading is called for, perform as designed and within limits of grading. 1 1.2.3 Remove all invasive vegetation from the wetland or wetland buffer. Removal of invasives by hand is preferred. Where machinery is needed, the invasives will be removed with the least amount of disturbance to the existing vegetation and soils. 1124 Where filter- fence is called for, install as located and designed. 1 1.2.5 inspection verifies soils deconsolidated and amended, elevations, etc. 11.3 Installation 1 1.3.1 Mitigation must be installed according to the approved mitigation plan. 1.1.3.2 Installation must be supervised by a qualified biologist. 11.3.3 Inspection to verify that all plants are installed according to design, and in good health. Nursery invoices must be provided to Consulting Biologist. Once approved, the monitoring period begins. 12.0 As -Built Plans 1= icld conditions can differ from design expectations. Where field conditions require minor changes to approved plan, those changes must be documented and submitted to City of Federal Way for approval. As -built drawings must be as cotmpreherlsive as the original plan. The monitoring period begins when the As -built plan has been approved, which then becomes the approved mitigation plan for future inspections purposes. 13.0 Maintenance 13.1 I:)uring year one, every failed planting must be replaced. 13.2 Maintenance must be done twice every year for the length of the monitoring period. Weeding and removal must be performed with the following constraints: Use no herbicides or pesticides whatsoever, and all work must be performed by hand wherever possible and with the lightest possible equipment where such use is imperative. 13.2.1 Weeding: Trees and shrubs must be weeded to the drip line, and mulch maintained at a 2" depth. Weed herbaceous plantings as necessary. 13.2.2 Removal: All litter, dumping, and non-native vegetation must be removed (e.g. Himalayan blackberry, etc.) and properly disposed of off -site. 14.0 Performance Guarantees 14.1 The applicant will provide a Mitigation Bond required by the City of Federal Way. 1.4.2 Oncc the mitigation plan approved, a Bond Quantity Worksllcet will be completed based on all elements of the mitigation plan. The total cost, plus contingency fec. % ill be the amount of the �"iitigation Bond the applicant is required to provide. .4.3 Note that approved Bona ill include required start date for mitigation construction. 14.4 Bonds are eligible for reduction to maintenance status as soon as installation has been completed. 14.5 Should the property be sold before the bond is released, the obligation can be transferred. If the purchaser posts an equivalent bond and acknowledges responsibility for all details of the approved Mitigation Plan, City of Federal Way will release your bond and end your obligation. CONSTRUCTION NOTES 1. All plantings and site preparation shall. be done according to American Nurseryman's Association guidelines. 2. Wetfand Consultant to verify quantities as shown on planting plan. 3. All nursery grown plants shall be containerized, or balled and burlapped. Provide only sound healthy, vigorous plants.. free of defects. diseases and all forms of infestations. 4. Dig, pack, transport, and handle all plants with care to ensure protection from Injury. Store plants in the manner necessary to accommodate their horticultural requirements. Heel in plants if necessary to keep them from drying out. 5. Contractor will be responsible for watering newly installed plant materials to ensure survivability. 6. Excavate circular planting pits with vertical sides and install plants as shown on the planting details. Back fill with approved supplemental soil. 7. Stake all plants per planting detail. 2j I ,r i :0 t i 6 :'Q uZ- I L-0-� # DATE I BY I REVISION U Z NNNO (n W F- Q r U O N (n d ZI d (n' W Z,I O Z ^ _ C.) p CA Z REE)'UBMITTEC PR 2 4 2p03 or, Military Roach 5out r`.--rim ��, .�,u.��`�-� of ° NOT" CP AdrAlr-460" DOAK PDROWN•. flb i�=;=T lip ! Vic•, • ' ,d�'GH �GaTAI!c�. FWAL # t y�tit:i@i. c� I I X WOOD WAN& S. PR- Ott MuLrr- AND IL,�;,•'•o tv till 'rvsrva� 'fR► TREE 5TAKI G DETAIL NT5 LRNDSCRPE PROFESSIONALS Maintenance • Design • Constmction Licensed v Bonded o:t Scale: 1" - 49 (approx.) Date: 5m98 Drawn by: JR Revised: 64UC.F L -FI�4nt•t c WTS• pe`ZU - 'gap' V.4 Of &-qW ANO ftp**r tg S is 8,4b tize- %4-� PW- �. of Mt,2 }SIT 5 R E5 PLANTING DETAIL T5 eAtage 'moods Preliminary Landscape Plan -Buffer Schneider.Homes,, Inc, O.C. 6 JlNG alk 6rborti" Strip PLAN ' W4:t 5Ct. M �pox_ . -Fz""z6 v+rs"I H Aealzo 7:tX� ,PP Z F AT I IV' jWj -MIWW*ULAF- GKOL UNDCOVER PLANTING PETAI L T5 Coniferous Trece at Suffer (6-8' Cedar or Fir, 29 o.C.) Large Evergreen 5hrul s (5 gal. min. 0 5' £?.C•) Evergreen Groundcover (Ivy or similar 015" o.C.) RECEIVE"' BY COMMUNITY DEVELQPHEN-I DEPARTMENT MAY 2.2 ,1999