Loading...
HomeMy WebLinkAbout160707_Emerald_Crest_Mitigation_Plan_8x1150'50'155TH PLACEHOUSEHOUSEHOUSEPARKINGPARKINGDRIVEWAYWETLANDCATEGORY IV50' BUFFERWETLAND BOUNDARY, APPROX.APPROXIMATE WETLAND BUFFERAREA OF WETLAND FILL AND GRADING VIOLATION (3,147 SF)AREA OF BUFFER IMPACT VIOLATION (565 SF) EMERALD CREST PROJECT MANAGER: DESIGNED: DRAFTED: CHECKED:SHEET SIZE:ORIGINAL PLAN IS 22" x 34".SCALE ACCORDINGLY.BY© Copyright- The Watershed CompanyDATEPRINTED BY FILENAMES c i e n c e & D e s i g n750 Sixth Street SouthKirkland WA 98033p 425.822.5242www.watershedco.comJOB NUMBER:SHEET NUMBER:SUBMITTALS & REVISIONSDESCRIPTIONDATENO.EMERALD CREST WETLAND RESTORATION PLANPREPARED FOR ANGIE BRINGIEREMERALD CREST HOAPARCEL #: 2329780000RENTON, WA 98058RKKMB / LVLVRK / MSF160707OF 51 11-21-16 REVIEW SET KMB2 02-01-17 CITY COMMENTS KMB2/6/2017 KYLE BRAUN 160707_EMERALD_CREST_MITIGATION.DWGVICINITY MAPSSHEET INDEX1 EXISTING CONDITIONS2 TESC AND SITE PREPERATION PLAN3 PLANTING AND RESTORATION PLAN4 PLANT INSTALLATION DETAILS AND NOTES5 RESTORATION NOTESNOTES1. CRITICAL AREAS DELINEATED BY THEWATERSHED COMPANY ON AUGUST 8, 2016.2. NO SURVEY RECEIVED. BASEMAPEXTRAPOLATED FROM AERIALPHOTOGRAPHY, FIELD MEASURED ANDTRIANGULATED FROM KNOWN POINTS.EXISTING CONDITIONSW140'10'5'020'LEGENDPROJECT LOCATIONSCALE 1:10 EXISTING FEATURESWETLAND BOUNDARY, APPROX.APPROXIMATE WETLAND BUFFERAREA OF WETLAND FILL VIOLATIONAREA OF BUFFER IMPACT VIOLATIONTESC AND DEMOLITION LEGENDSILT FENCE (240 LF)SOIL PREPARATION LEGEND1. IN ALL AREAS, ENSURE INVASIVE PLANTS,DEBRIS, FILL AND VIOLATION SOILS AREREMOVED. DEPTH OF FILL VARIES FROM 4"-24"2. SPREAD WOOD CHIP MULCH EVENLY TO ADEPTH OF 4" WITHIN THE IMPACTED BUFFERAREA.3. INSTALL PLANTS. SEE SHEET W350'50'HOUSEHOUSEPARKINGDRIVEWAYWETLANDCATEGORY IV50' BUFFERPROJECT MANAGER: DESIGNED: DRAFTED: CHECKED:SHEET SIZE:ORIGINAL PLAN IS 22" x 34".SCALE ACCORDINGLY.BY© Copyright- The Watershed CompanyDATEPRINTED BY FILENAMES c i e n c e & D e s i g n750 Sixth Street SouthKirkland WA 98033p 425.822.5242www.watershedco.comJOB NUMBER:SHEET NUMBER:SUBMITTALS & REVISIONSDESCRIPTIONDATENO.EMERALD CREST WETLAND RESTORATION PLANPREPARED FOR ANGIE BRINGIEREMERALD CREST HOAPARCEL #: 2329780000RENTON, WA 98058RKKMB / LVLVRK / MSF160707OF 51 11-21-16 REVIEW SET KMB2 02-01-17 CITY COMMENTS KMB2/6/2017 KYLE BRAUN 160707_EMERALD_CREST_MITIGATION.DWGTESC AND SITE PREPARATION PLANW240'10'5'020'LEGENDSILT FENCE FABRIC AND WIRE MESH BACKINGSHALL BE WIRED TO TOP, MIDDLE AND BOTTOMOF POSTSTEEL "T" POSTOR 2"x4"WOOD POSTS,OR EQUIVALENTSILT CONTAINMENT FENCEFABRIC: JOINTS IN FILTERFABRIC SHALL BE SPLICEDAT POSTS. USE STAPLES,WIRE RINGS, OREQUIVALENT TO ATTACHFABRIC TO POSTS.8' MAX.FINISH GRADELAKE / RIVER / WETLANDSECTIONELEVATIONKEY SILT FENCE BOTTOM IN 4" X 4" MINIMUMTRENCH BACKFILLED WITH NATIVE MATERIAL.TRENCH THE ENTIRE LENGTH OF THE FENCE WITHNO BREAKS.CUT-AWAYSHOWING2"X2", 14 GAUGEWIREMESH BACKINGSILT FENCE MAINTENANCE STANDARDS:1. ANY DAMAGE SHALL BE REPAIREDIMMEDIATELY.2. SEDIMENT SHALL BE REMOVED WHENACCUMULATION EXCEEDS 6" IN DEPTH.1W2Scale: NTSSILT FENCE1SCALE 1:10Scale: 1:5GENERAL GRADING SECTION DETAILAAW2WETLANDFILL TO BE REMOVEDEXISTING GRADE WITHFILL VIOLATIONPREVIOUS/PROPOSED GRADEDRIVEWAY1. DEPTH OF FILL TO BE REMOVED SHALL GO TODEPTH OF NATIVE SOIL OR DECOMPOSEDVEGETATION LAYER BELOW FILL LAYER.RESTORATION PROFESSIONAL SHALL BEON-SITE FOR ALL THE REMOVAL ACTIVITIESAND TO APPROVE FINAL GRADING. 50'50'HOUSEHOUSEPARKINGDRIVEWAYWETLANDCATEGORY IV50' BUFFEREXISTING FEATURESWETLAND BOUNDARY, APPROX. (NOT SURVEYED)APPROXIMATE WETLAND BUFFERTESC AND DEMOLITION LEGENDSPLIT RAIL FENCE WITH CRITICAL AREA SIGNTREESOREGEON ASH / FRAXINUS LATIFOLIASHRUBSCORNUS SERICEA / REDTWIG DOGWODLONICERA INVOLUCRATA / TWINBERRYPHYSOCARPUS CAPITATUS / PACIFIC NINEBARKROSA NUTKANA / NOOTKA ROSERUBUS SPECTABILIS / SALMONBERRYLIVE STAKES & GROUNDCOVERSALIX LASIANDRA / PACIFIC WILLOWATHYRIUM FILIX-FEMINA / LADY FERNSALIX SCOULERIANA / SCOULER'S WILLOWHYDROSEED MIXAMERICAN SLOUGHGRASS / BECKMANNIA SYZIGACHNE 45%WESTERN MANNAGRASS / GLYCERIA OCCIDENTALIS 45%SPREADING RUSH / JUNCUS PATENS 5%SLOUGH SEDGE / CAREX OBNUPTA 5%QTY2055555555559090903.5 LBS45%45%5%5%SPACING10' O.C.4' O.C.4' O.C.4' O.C.4' O.C.4' O.C.4' O.C.4' O.C.4' O.C.SIZE2 GAL.1 GAL.1 GAL.1 GAL.1 GAL.1 GAL.3' MIN.4 IN'3' MIN.NOTEALL SHRUBS TO BEFULL AND WELLROOTEDONLY PLANT WITHINBUFFER IMPACT AREAAPPLY TO ENTIREPLANTING AREAcoseruspphcarnloin20.00'20.00'PLANT SCHEDULEPLANTING TYPICALcosecosecosecosecoseloinloinloinloinloinphcaphcaphcaphcaphcarnrnrnrnrnrusprusprusprusprusp3,827 SQUARE FEETfrlafrlafrlaPROJECT MANAGER: DESIGNED: DRAFTED: CHECKED:SHEET SIZE:ORIGINAL PLAN IS 22" x 34".SCALE ACCORDINGLY.BY© Copyright- The Watershed CompanyDATEPRINTED BY FILENAMES c i e n c e & D e s i g n750 Sixth Street SouthKirkland WA 98033p 425.822.5242www.watershedco.comJOB NUMBER:SHEET NUMBER:SUBMITTALS & REVISIONSDESCRIPTIONDATENO.EMERALD CREST WETLAND RESTORATION PLANPREPARED FOR ANGIE BRINGIEREMERALD CREST HOAPARCEL #: 2329780000RENTON, WA 98058RKKMB / LVLVRK / MSF160707OF 51 11-21-16 REVIEW SET KMB2 02-01-17 CITY COMMENTS KMB2/6/2017 KYLE BRAUN 160707_EMERALD_CREST_MITIGATION.DWGPLANTING AND RESTORATION PLANW340'10'5'020'LEGEND1W318"MIN.4"12"12"3'-0"6"12"8'-0" MAX4"CHAMFER TOP OFPOSTS 45 DEGREES TOA DEPTH OF 1" ON ALLFOUR SIDES.ATTACH CITY/COUNTYAPPROVED PRE-PRINTEDMETAL SIGN TO POST WITHTWO 58" DIA. GALVANIZEDCARRIAGE BOLTS. SEE PLANSFOR SIGN LOCATIONS.FINISHED GRADECOMPACTED GRAVEL BASE.NO CONCRETE IS TO BEPLACED IN SENSITIVE AREAS.COMPACTED SUBGRADE6" x 6" ROUGH CUT, SPLIT, CEDARPOST NOTCHED TO CONTAINAND CONCEAL RAIL CONNECTION2 X 6 ROUGH CUT, SPLIT,CEDAR RAILSScale: NTSSPLIT RAIL FENCE WITH CRITICAL AREA SIGN1SCALE 1:10 PROJECT MANAGER: DESIGNED: DRAFTED: CHECKED:SHEET SIZE:ORIGINAL PLAN IS 22" x 34".SCALE ACCORDINGLY.BY© Copyright- The Watershed CompanyDATEPRINTED BY FILENAMES c i e n c e & D e s i g n750 Sixth Street SouthKirkland WA 98033p 425.822.5242www.watershedco.comJOB NUMBER:SHEET NUMBER:SUBMITTALS & REVISIONSDESCRIPTIONDATENO.EMERALD CREST WETLAND RESTORATION PLANPREPARED FOR ANGIE BRINGIEREMERALD CREST HOAPARCEL #: 2329780000RENTON, WA 98058RKKMB / LVLVRK / MSF160707OF 51 11-21-16 REVIEW SET KMB2 02-01-17 CITY COMMENTS KMB2/6/2017 KYLE BRAUN 160707_EMERALD_CREST_MITIGATION.DWGPLANT INSTALLATION DETAILS AND NOTESSCALE AS NOTEDW4GENERAL NOTESQUALITY ASSURANCE1. PLANTS SHALL MEET OR EXCEED THE SPECIFICATIONS OFFEDERAL, STATE, AND LOCAL LAWS REQUIRING INSPECTION FORPLANT DISEASE AND INSECT CONTROL.2. PLANTS SHALL BE HEALTHY, VIGOROUS, AND WELL-FORMED,WITH WELL DEVELOPED, FIBROUS ROOT SYSTEMS, FREE FROMDEAD BRANCHES OR ROOTS. PLANTS SHALL BE FREE FROMDAMAGE CAUSED BY TEMPERATURE EXTREMES, LACK OREXCESS OF MOISTURE, INSECTS, DISEASE, AND MECHANICALINJURY. PLANTS IN LEAF SHALL BE WELL FOLIATED AND OFGOOD COLOR. PLANTS SHALL BE HABITUATED TO THE OUTDOORENVIRONMENTAL CONDITIONS INTO WHICH THEY WILL BEPLANTED (HARDENED-OFF).3. TREES WITH DAMAGED, CROOKED, MULTIPLE OR BROKENLEADERS WILL BE REJECTED. WOODY PLANTS WITH ABRASIONSOF THE BARK OR SUN SCALD WILL BE REJECTED.4. NOMENCLATURE: PLANT NAMES SHALL CONFORM TO FLORA OFTHE PACIFIC NORTHWEST BY HITCHCOCK AND CRONQUIST,UNIVERSITY OF WASHINGTON PRESS, 1973 AND/OR TO A FIELDGUIDE TO THE COMMON WETLAND PLANTS OF WESTERNWASHINGTON & NORTHWESTERN OREGON, ED. SARAH SPEARCOOKE, SEATTLE AUDUBON SOCIETY, 1997.DEFINITIONS1. PLANTS/PLANT MATERIALS. PLANTS AND PLANT MATERIALSSHALL INCLUDE ANY LIVE PLANT MATERIAL USED ON THEPROJECT. THIS INCLUDES BUT IS NOT LIMITED TO CONTAINERGROWN, B&B OR BAREROOT PLANTS; LIVE STAKES ANDFASCINES (WATTLES); TUBERS, CORMS, BULBS, ETC..; SPRIGS,PLUGS, AND LINERS.2. CONTAINER GROWN. CONTAINER GROWN PLANTS ARE THOSEWHOSE ROOTBALLS ARE ENCLOSED IN A POT OR BAG IN WHICHTHAT PLANT GREW.SUBSTITUTIONS1. IT IS THE CONTRACTOR'S RESPONSIBILITY TO OBTAIN SPECIFIEDMATERIALS IN ADVANCE IF SPECIAL GROWING, MARKETING OROTHER ARRANGEMENTS MUST BE MADE IN ORDER TO SUPPLYSPECIFIED MATERIALS.2. SUBSTITUTION OF PLANT MATERIALS NOT ON THE PROJECT LISTWILL NOT BE PERMITTED UNLESS AUTHORIZED IN WRITING BYTHE RESTORATION CONSULTANT.3. IF PROOF IS SUBMITTED THAT ANY PLANT MATERIAL SPECIFIED ISNOT OBTAINABLE, A PROPOSAL WILL BE CONSIDERED FOR USEOF THE NEAREST EQUIVALENT SIZE OR ALTERNATIVE SPECIES,WITH CORRESPONDING ADJUSTMENT OF CONTRACT PRICE.4. SUCH PROOF WILL BE SUBSTANTIATED AND SUBMITTED INWRITING TO THE CONSULTANT AT LEAST 30 DAYS PRIOR TOSTART OF WORK UNDER THIS SECTION.INSPECTION1. PLANTS SHALL BE SUBJECT TO INSPECTION AND APPROVAL BYTHE RESTORATION CONSULTANT FOR CONFORMANCE TOSPECIFICATIONS, EITHER AT TIME OF DELIVERY ON-SITE OR ATTHE GROWER'S NURSERY. APPROVAL OF PLANT MATERIALS ATANY TIME SHALL NOT IMPAIR THE SUBSEQUENT RIGHT OFINSPECTION AND REJECTION DURING PROGRESS OF THE WORK.2. PLANTS INSPECTED ON SITE AND REJECTED FOR NOT MEETINGSPECIFICATIONS MUST BE REMOVED IMMEDIATELY FROM SITEOR RED-TAGGED AND REMOVED AS SOON AS POSSIBLE.3. THE RESTORATION CONSULTANT MAY ELECT TO INSPECT PLANTMATERIALS AT THE PLACE OF GROWTH. AFTER INSPECTION ANDACCEPTANCE, THE RESTORATION CONSULTANT MAY REQUIRETHE INSPECTED PLANTS BE LABELED AND RESERVED FORPROJECT. SUBSTITUTION OF THESE PLANTS WITH OTHERINDIVIDUALS, EVEN OF THE SAME SPECIES AND SIZE, ISUNACCEPTABLE.MEASUREMENT OF PLANTS1. PLANTS SHALL CONFORM TO SIZES SPECIFIED UNLESSSUBSTITUTIONS ARE MADE AS OUTLINED IN THIS CONTRACT.2. HEIGHT AND SPREAD DIMENSIONS SPECIFIED REFER TO MAINBODY OF PLANT AND NOT BRANCH OR ROOT TIP TO TIP. PLANTDIMENSIONS SHALL BE MEASURED WHEN THEIR BRANCHES ORROOTS ARE IN THEIR NORMAL POSITION.3. WHERE A RANGE OF SIZE IS GIVEN, NO PLANT SHALL BE LESSTHAN THE MINIMUM SIZE AND AT LEAST 50% OF THE PLANTSSHALL BE AS LARGE AS THE MEDIAN OF THE SIZE RANGE.(EXAMPLE: IF THE SIZE RANGE IS 12" TO 18", AT LEAST 50% OFPLANTS MUST BE 15" TALL.).SUBMITTALSPROPOSED PLANT SOURCES1. WITHIN 45 DAYS AFTER AWARD OF THE CONTRACT, SUBMIT ACOMPLETE LIST OF PLANT MATERIALS PROPOSED TO BEPROVIDED DEMONSTRATING CONFORMANCE WITH THEREQUIREMENTS SPECIFIED. INCLUDE THE NAMES ANDADDRESSES OF ALL GROWERS AND NURSERIES.PRODUCT CERTIFICATES1. PLANT MATERIALS LIST - SUBMIT DOCUMENTATION TOCONSULTANT AT LEAST 30 DAYS PRIOR TO START OF WORKUNDER THIS SECTION THAT PLANT MATERIALS HAVE BEENORDERED. ARRANGE PROCEDURE FOR INSPECTION OF PLANTMATERIAL WITH CONSULTANT AT TIME OF SUBMISSION.2. HAVE COPIES OF VENDOR'S OR GROWERS' INVOICES ORPACKING SLIPS FOR ALL PLANTS ON SITE DURING INSTALLATION.INVOICE OR PACKING SLIP SHOULD LIST SPECIES BY SCIENTIFICNAME, QUANTITY, AND DATE DELIVERED (AND GENETIC ORIGIN IFTHAT INFORMATION WAS PREVIOUSLY REQUESTED).DELIVERY, HANDLING, & STORAGENOTIFICATIONCONTRACTOR MUST NOTIFY CONSULTANT 48 HOURS OR MORE INADVANCE OF DELIVERIES SO THAT CONSULTANT MAY ARRANGE FORINSPECTION.PLANT MATERIALS1. TRANSPORTATION - DURING SHIPPING, PLANTS SHALL BEPACKED TO PROVIDE PROTECTION AGAINST CLIMATE EXTREMES,BREAKAGE AND DRYING. PROPER VENTILATION ANDPREVENTION OF DAMAGE TO BARK, BRANCHES, AND ROOTSYSTEMS MUST BE ENSURED.2. SCHEDULING AND STORAGE - PLANTS SHALL BE DELIVERED ASCLOSE TO PLANTING AS POSSIBLE. PLANTS IN STORAGE MUSTBE PROTECTED AGAINST ANY CONDITION THAT IS DETRIMENTALTO THEIR CONTINUED HEALTH AND VIGOR.3. HANDLING - PLANT MATERIALS SHALL NOT BE HANDLED BY THETRUNK, LIMBS, OR FOLIAGE BUT ONLY BY THE CONTAINER, BALL,BOX, OR OTHER PROTECTIVE STRUCTURE, EXCEPT BAREROOTPLANTS SHALL BE KEPT IN BUNDLES UNTIL PLANTING AND THENHANDLED CAREFULLY BY THE TRUNK OR STEM.4. LABELS - PLANTS SHALL HAVE DURABLE, LEGIBLE LABELSSTATING CORRECT SCIENTIFIC NAME AND SIZE. TEN PERCENTOF CONTAINER GROWN PLANTS IN INDIVIDUAL POTS SHALL BELABELED. PLANTS SUPPLIED IN FLATS, RACKS, BOXES, BAGS, ORBUNDLES SHALL HAVE ONE LABEL PER GROUP.WARRANTYPLANT WARRANTYPLANTS MUST BE GUARANTEED TO BE TRUE TO SCIENTIFIC NAMEAND SPECIFIED SIZE, AND TO BE HEALTHY AND CAPABLE OFVIGOROUS GROWTH.REPLACEMENT1. PLANTS NOT FOUND MEETING ALL OF THE REQUIREDCONDITIONS AT THE CONSULTANT'S DISCRETION MUST BEREMOVED FROM SITE AND REPLACED IMMEDIATELY AT THECONTRACTOR'S EXPENSE.2. PLANTS NOT SURVIVING AFTER ONE YEAR TO BE REPLACED ATTHE CONTRACTOR'S EXPENSE.PLANT MATERIALGENERAL1. PLANTS SHALL BE NURSERY GROWN IN ACCORDANCE WITHGOOD HORTICULTURAL PRACTICES UNDER CLIMATICCONDITIONS SIMILAR TO OR MORE SEVERE THAN THOSE OF THEPROJECT SITE.2. PLANTS SHALL BE TRUE TO SPECIES AND VARIETY ORSUBSPECIES. NO CULTIVARS OR NAMED VARIETIES SHALL BEUSED UNLESS SPECIFIED AS SUCH.QUANTITIESSEE PLANT LIST ON ACCOMPANYING PLANS AND PLANT SCHEDULES.ROOT TREATMENT1. CONTAINER GROWN PLANTS (INCLUDES PLUGS): PLANT ROOTBALLS MUST HOLD TOGETHER WHEN THE PLANT IS REMOVEDFROM THE POT, EXCEPT THAT A SMALL AMOUNT OF LOOSE SOILMAY BE ON THE TOP OF THE ROOTBALL.2. PLANTS MUST NOT BE ROOT-BOUND; THERE MUST BE NOCIRCLING ROOTS PRESENT IN ANY PLANT INSPECTED.3. ROOTBALLS THAT HAVE CRACKED OR BROKEN WHEN REMOVEDFROM THE CONTAINER SHALL BE REJECTED.PLANT INSTALLATION SPECIFICATIONSScale: NTSCONTAINER PLANTING1IF VEGETATION EXISTS WITHINPLANTING AREA, SPACE AT 23 XFROM STEM OF EXISTINGVEGETATION2/3 X2/3 XAREA FOR SPACING ADJUSTMENTXXXX= PLANT SPACING= PLANTNOTE:FIRST PLACE PLANTS ALONG THEPERIMETER OF THE PLANTINGAREA, AND AROUND EXISTINGVEGETATION. THEN SPACE THEREMAINDER OF THE PLANTINGS.NOTES:1. PLANTING PIT SHALL NOT BE LESS THAN (2)TIMES THE WIDTH OF THE ROOT BALL DIA.2. LOOSEN SIDES AND BOTTOMS OF PLANTING PIT3. SOAK PLANTING PIT AFTER PLANTING2X MIN DIA. ROOTBALLREMOVE FROM POT OR BURLAP & ROUGH-UPROOT BALL BEFORE INSTALLING. UNTANGLEAND STRAIGHTEN CIRCLING ROOTS - PRUNE IFNECESSARY. IF PLANT IS EXCEPTIONALLYROOT-BOUND, DO NOT PLANT AND RETURN TONURSERY FOR AN ACCEPTABLE ALTERNATIVESPECIFIED MULCH LAYER. HOLD BACK MULCHFROM TRUNK/STEMS (MULCH LAYER ONLY INBUFFER IMPACT AREA)FINISH GRADEREMOVE DEBRIS AND LARGE ROCKS FROM PLANTINGPIT AND SCARIFY SIDES AND BASE. BACKFILL WITHSPECIFIED SOIL. FIRM UP SOIL AROUND PLANT.NOTES:1. STAKES SHALL HAVE A MINIMUMOF TWO LIVE BUDS EXPOSEDABOVE GROUND.2. INSTALL HARDWOOD CUTTINGSDURING THEIR DORMANCY. DONOT ALLOW THEM TO DRY OUT.3. CUTTINGS SHALL BE 34" TO 1" INDIAMETER OR APPROVEDEQUIVALENT.4. INSTALL TO MIN. 2/3RDS DEPTHINTO SOIL. USE TRIANGULARSPACING. SEE PLANTINGSCHEDULE FOR SPACING.5. INSURE THAT BUDS ARE POINTINGUP.6. FIRM UP SOIL AROUND INSTALLEDCUTTING.7. WATER AFTER PLANTING ANDBEFORE MULCHING.SOIL AMENDMENTS ASSPECIFIEDFORM PILOT HOLE W/ ROCKBAR, REBAR OR OTHERPLANTING TOOL. DO NOTHAMMER OR POUND INCUTTINGS UNLESS APPROVEDBY RESTORATION SPECIALIST.TAMP SOIL AROUND CUTTING,ENSURE NO AIR POCKETS1/3RD CUTTINGHT. 2/3RDS CUTTING HT. SEE PLANTING SCHEDULE FOR MIN. LENGTH ANGLE CUT AT BASEFINISH GRADEScale: NTSLIVE STAKE PLANTING2Scale: NTSPLANT SPACING3 PROJECT MANAGER: DESIGNED: DRAFTED: CHECKED:SHEET SIZE:ORIGINAL PLAN IS 22" x 34".SCALE ACCORDINGLY.BY© Copyright- The Watershed CompanyDATEPRINTED BY FILENAMES c i e n c e & D e s i g n750 Sixth Street SouthKirkland WA 98033p 425.822.5242www.watershedco.comJOB NUMBER:SHEET NUMBER:SUBMITTALS & REVISIONSDESCRIPTIONDATENO.EMERALD CREST WETLAND RESTORATION PLANPREPARED FOR ANGIE BRINGIEREMERALD CREST HOAPARCEL #: 2329780000RENTON, WA 98058RKKMB / LVLVRK / MSF160707OF 51 11-21-16 REVIEW SET KMB2 02-01-17 CITY COMMENTS KMB2/6/2017 KYLE BRAUN 160707_EMERALD_CREST_MITIGATION.DWGRESTORATION NOTESSCALE AS NOTEDW5WETLAND AND BUFFER RESTORATION SUMMARYTHIS PLAN PROPOSES TO RESTORE UNAUTHORIZED IMPACTS TO WETLAND (3,147 SF) AND BUFFERAREAS (565 SF) TO THEIR PRE-DISTURBANCE CONDITIONS. STRUCTURAL AND FUNCTIONAL VALUES,INCLUDING WATER QUALITY AND HABITAT FUNCTIONS, WILL BE RESTORED UNDER THIS RESTORATIONPLAN. UNAUTHORIZED CLEARING, EXCAVATION, AND FILL PLACEMENT IN WETLAND AND BUFFER AREASRESULTED IN A NOTICE OF VIOLATION FROM THE CITY OF RENTON. THE PROPOSED PLAN CALLS FORREMOVING FILL (ESTIMATED 4 TO 24 INCHES DEPTH) AND RESTORING THE WETLAND AND BUFFER TOITS ESTIMATED ORIGINAL GRADE. SILT FENCING WILL BE PLACED AROUND THE WORK AREA TOPREVENT SEDIMENTATION OF DOWNSTREAM WATER FEATURES, AND A SPLIT RAIL FENCE WILL BEINSTALLED TO PREVENT ANTHROPOGENIC INTRUSIONS INTO THE WETLAND. THE WETLAND WILL BERESTORED BACK TO A SCRUB-SHRUB AND FORESTED WETLAND BY INSTALLING NATIVE TREES ANDWOODY SHRUBS, INCLUDING OREGON ASH, RED-OSIER DOGWOOD, TWINBERRY, PACIFIC NINEBARK,SALMONBERRY, NOOTKA ROSE, WILLOWS (SITKA, PACIFIC AND SCOULER'S), LADY FERN ASGROUNDCOVER, AND SPREADING A WETLAND HYDROSEED MIXTURE, CONSISTING OF AMERICANSLOUGHGRASS, WESTERN MANNAGRASS, SPREADING RUSH AND SLOUGH SEDGE. THIS VEGETATIONPLAN MIRRORS SPECIES FOUND WITHIN NON-DISTURBED PARTS OF THE WETLAND. A MAINTENANCEAND MONITORING PLAN IS PROPOSED TO ENSURE THE PLANTS BECOME ESTABLISHED. THE PROPOSEDRESTORATION PLAN WILL BE AN OVERALL FUNCTIONAL IMPROVEMENT OVER THE CURRENT DEGRADEDCONDITIONS. DEVELOPMENT OF THIS RESTORATION PLAN IS BASED UPON BEST AVAILABLE SCIENCE.THIS IS A RESTORATION PLAN AND NOT A MITIGATION PLAN; THEREFORE, MITIGATION SEQUENCINGDOES NOT APPLY.RESTORATION GOALS1. RE-ESTABLISH WETLAND CONDITIONS IN AREAS WHERE UNAUTHORIZED FILL HAS BEEN PLACED.a.REMOVE FILL MATERIALS TO REACH NATURAL GRADE.b. INSTALL NATIVE PLANT COMMUNITY SIMILAR TO THAT WHICH WAS PRESENT PRIOR TODISTURBANCE.2.IMPROVE WATER QUALITY, HYDROLOGY, AND HABITAT FUNCTIONS OF ON-SITE WETLAND BUFFERS.a.ESTABLISH DIVERSE MIXTURE OF NATIVE TREES AND SHRUBS IN WETLAND AND BUFFERIMPACT AREAS AS SPECIFIED ON THE PLAN.b. MAINTAIN AND MONITOR FOR A PERIOD OF FIVE YEARS TO ENSURE PLANT ESTABLISHMENT.PERFORMANCE STANDARDSTHE STANDARDS LISTED BELOW SHALL BE USED TO JUDGE THE SUCCESS OF THE PLAN OVER TIME.1. PLANT SURVIVAL:a. ACHIEVE 100% SURVIVAL OF INSTALLED CONTAINER PLANTS AND 75% OF INSTALLED LIVESTAKES BY THE END OF YEAR-1. THIS STANDARD CAN BE MET THROUGH PLANTESTABLISHMENT OR THROUGH REPLANTING AS NECESSARY TO ACHIEVE THE REQUIREDNUMBERS.b. ACHIEVE 80% SURVIVAL OF INSTALLED CONTAINER PLANTS AND 60% OF INSTALLED LIVESTAKES BY THE END OF YEAR-2. THIS STANDARD CAN BE MET THROUGH PLANTESTABLISHMENT OR THROUGH REPLANTING AS NECESSARY TO ACHIEVE THE REQUIREDNUMBERS. NATIVE VOLUNTEERS MAY COUNT TOWARDS THIS STANDARD.2.NATIVE WOODY PLANT COVER:a. ACHIEVE 60% COVER OF NATIVE TREE, SHRUB, AND GROUNDCOVER SPECIES BY THE END OFYEAR 3. THIS MAY INCLUDE EXISTING AND VOLUNTEER NATIVE UNDERSTORY PLANT SPECIES.AT LEAST 50% OF AERIAL COVER MUST BE PROVIDED BY TREE AND SHRUB SPECIES.b. ACHIEVE 80% COVER OF NATIVE TREE, SHRUB, AND GROUNDCOVER SPECIES BY THE END OFYEAR 3. THIS MAY INCLUDE EXISTING AND VOLUNTEER NATIVE UNDERSTORY PLANT SPECIES.AT LEAST 70% OF AERIAL COVER MUST BE PROVIDED BY TREE AND SHRUB SPECIES.3. SPECIES DIVERSITY: ESTABLISH AT LEAST 1 NATIVE TREE SPECIES AND 4 NATIVE SHRUB SPECIESBY YEAR-3.4.INVASIVE COVER: NO MORE THAN 10% COVER BY INVASIVE WEED SPECIES IN THE RESTORATIONAREAS IN ANY MONITORING YEAR.MONITORING PLANTHIS MONITORING PROGRAM IS DESIGNED TO TRACK THE SUCCESS OF THE RESTORATION SITE OVERTIME AND TO MEASURE THE DEGREE TO WHICH IT IS MEETING THE PERFORMANCE STANDARDSOUTLINED PREVIOUSLY.AN AS-BUILT PLAN AND REPORT WILL BE PREPARED BY THE RESTORATION SPECIALIST PRIOR TO THEBEGINNING OF THE MONITORING PERIOD. THE AS-BUILT PLAN SHALL BE A MARK-UP OF THE PLANTINGPLANS INCLUDED IN THIS PLAN SET. THE AS-BUILT REPORT WILL DOCUMENT ANY DEPARTURES INPLANT PLACEMENT OR OTHER COMPONENTS FROM THE PROPOSED PLAN.DURING THE AS-BUILT INSPECTION, THE RESTORATION SPECIALIST SHALL ESTABLISH PHOTO POINTSAND INSTALL MONITORING TRANSECTS IN THE PLANTED AREA. APPROXIMATE TRANSECT AND PHOTOPOINT LOCATIONS SHALL BE MARKED ON THE AS-BUILT PLAN. DURING EACH MONITORING EVENT,PERCENT COVER DATA SHALL BE RECORDED ALONG THE ESTABLISHED TRANSECTS USING THELINE-INTERCEPT METHOD. IF FURTHER DOCUMENTATION OF COVER IS REQUIRED, PLANTED AREASLOCATED OUTSIDE OF TRANSECTS MAY BE VISUALLY ASSESSED USING THE COVER CLASS METHOD.MONITORING FOR THE FIRST YEAR WILL TAKE PLACE QUARTERLY; A REPORT SHOULD BE SUBMITTEDAFTER EACH VISIT. STARTING IN THE SECOND YEAR, MONITORING SHOULD TAKE PLACE TWICEANNUALLY FOR FIVE YEARS WITH ONE ANNUAL REPORT SUBMISSION. FOR MONITORING YEARS 2 - 5,THERE SHALL BE A SPRING AND A LATE SUMMER/FALL VISIT. FIRST-YEAR MONITORING SHOULDCOMMENCE IN THE FIRST SUMMER OR FALL SUBSEQUENT TO INSTALLATION.THE SPRING MONITORING VISIT WILL RECORD MAINTENANCE NEEDS SUCH AS PLANT REPLACEMENTAND WEEDING NEEDS. FOLLOWING THE SPRING VISIT THE RESTORATION SPECIALIST WILL NOTIFY THEOWNER AND/OR MAINTENANCE CREWS OF NECESSARY EARLY GROWING SEASON MAINTENANCE. THESECOND ANNUAL MONITORING VISIT WILL CONTAIN THE BULK OF THE SITE ASSESSMENT AND WILLTAKE PLACE IN THE LATE SUMMER OR EARLY FALL. THE LATE-SEASON FORMAL MONITORING VISITSHALL RECORD AND REPORT THE FOLLOWING IN AN ANNUAL REPORT SUBMITTED TO THE CITY OFRENTON.1. GENERAL SUMMARY OF THE SPRING VISIT.2. COUNTS OF LIVE TREES, SHRUBS, AND GROUNDCOVER BY SPECIES IN THE PLANTED AREAS INYEARS 1 AND 2. SIGNIFICANT DIE-OFF SHOULD BE REPORTED BY SPECIES AND QUANTITY IN ANYMONITORING YEAR.3. ESTIMATE OF NATIVE TREE, SHRUB, AND GROUNDCOVER AERIAL COVERAGE.4.ESTIMATE OF INVASIVE AERIAL COVERAGE.5. PHOTOGRAPHIC DOCUMENTATION FROM FIXED REFERENCE POINTS IN EACH PLANTING AREA.6.INTRUSIONS INTO THE PLANTING AREAS, VANDALISM OR OTHER ACTIONS THAT IMPAIR THEINTENDED FUNCTIONS OF THE PLANTED AREAS.7. RECOMMENDATIONS FOR MAINTENANCE OR REPAIR OF ANY PORTION OF THE RESTORATIONAREA.CONSTRUCTION NOTESTHE RESTORATION SPECIALIST SHALL MONITOR:1. ALL SITE PREPARATION, INCLUDING INVASIVE SPECIES MANAGEMENT.2. ALL GRADING ACTIVITIES.3. PLANT MATERIAL INSPECTION.a. PLANT MATERIAL DELIVERY AND SALVAGED PLANT INSPECTION.b.100% PLANT INSTALLATION INSPECTION.GENERAL WORK SEQUENCE1. INSTALL TEMPORARY EROSION CONTROL MEASURES PER THE RESTORATION SHEET SET (W2).2.REMOVE ALL FILL MATERIALS, INCLUDING BUT NOT LIMITED TO GRAVEL FILL, DRAINPIPE, TARPS,AND ASPHALT OUT OF WETLAND. THE RESTORATION SPECIALIST SHALL BE PRESENT DURING ALLGRADING ACTIVITIES AND WILL DETERMINE THE FINISHED GRADE ELEVATIONS ONCE NATIVESOILS/VEGETATION HAVE BEEN EXPOSED.3.WITHIN THE BUFFER RESTORATION AREA ONLY , SPREAD A FOUR-INCH LAYER OF WOODCHIPMULCH ACROSS THE ENTIRE BUFFER PLANTING AREA. (NOTE: AT THIS POINT, THE SITE CAN RESTIN THIS STATE FOR AN EXTENDED TIME PERIOD TO ALLOW FOR PLANTING DURING THE DORMANTSEASON)4.PREPARE A PLANTING PIT FOR EACH PLANT AND INSTALL PER PLANTING DETAILS. SEERESTORATION PLAN SHEET W4.a. PLANT INSTALLATION SHOULD TAKE PLACE DURING THE DORMANT SEASON (OCTOBER 15TH -MARCH 1ST), FOR BEST SURVIVAL.b. IN BUFFER PLANTING AREA PULL MULCH BACK FROM STEMS TO PREVENT ROT.5. DURING INSTALLATION, WATER EACH PLANT SUCH THAT NO POCKETS OF DRY SOIL REMAIN IN THEPLANTING PIT.6.INSTALL SPLIT RAIL FENCE PER RESTORATION PLAN SHEET (W3)7.IRRIGATE ALL PLANTS DURING THE DRY SEASON (JUNE 1 TO SEPTEMBER 30) SO THAT ALLPLANTING AREAS RECEIVE ONE INCH OF WATER PER WEEK. THIS CAN BE DONE BY A TEMPORARYIRRIGATION SYSTEM, WATER TRUCK, OR BY HAND-WATERING.MATERIAL SPECIFICATIONS AND DEFINITIONS1. WOODCHIP MULCH: WOOD CHIPS OR EQUIVALENT (CHIPPED WOODY MATERIAL) APPROXIMATELY 1INCH MINIMUM TO 3 INCHES IN MAXIMUM DIMENSION (NOT SAWDUST OR COARSE HOG FUEL).PACIFIC TOPSOIL SELLS SUITABLE WOODCHIP MULCH CALLED “DOT WOODCHIP MULCH” AT MANYOF THEIR LOCATIONS. PACIFIC TOPSOIL: (800) 884-7645. MULCH SHALL NOT CONTAIN APPRECIABLEQUANTITIES OF GARBAGE, PLASTIC, METAL, SOIL, AND DIMENSIONAL LUMBER OR CONSTRUCTION/DEMOLITION DEBRIS. NOTE: ARBORIST WOODCHIPS GENERALLY CONTAIN WEED SEEDS AND ARENOT AN ACCEPTABLE ALTERNATIVE.2.HYDROSEED MIX: PRO TIME 406 NATIVE MIX FOR WET AREAS FROM PRO TIME LAWN SEED (503) -239-7518. APPLICATION RATE: 1 LB PER 1000 SQUARE FEET CONSISTING OF:xAMERICAN SLOUGHGRASS, BECKMANNIA SYZIGACHNE 45%xWESTERN MANNAGRASS, GLYCERIA OCCIDENTALIS 45%xSPREADING RUSH, JUNCUS PATENS 5%xSLOUGH SEDGE, CAREX OBNUPTA 5%3. RESTORATION SPECIALIST: THE WATERSHED COMPANY [425-822-5242] PERSONNEL OR OTHERPERSON QUALIFIED TO EVALUATE ENVIRONMENTAL RESTORATION PROJECTS.MAINTENANCE PLANTHE SITE WILL BE MAINTAINED FOR FIVE YEARS FOLLOWING ACCEPTANCE OF THE AS-BUILTCONDITIONS.1. REPLACE EACH PLANT FOUND DEAD IN THE YEAR-1 MONITORING VISITS DURING THE UPCOMINGFALL DORMANT SEASON (OCTOBER 15TH TO MARCH 1ST) OR AS DIRECTED BY THE RESTORATIONSPECIALIST.2. FOLLOW THE RECOMMENDATIONS NOTED IN THE SPRING MONITORING SITE VISIT.3.INVASIVE SPECIES CONTROL: MANAGE NOTED INVASIVE SPECIES (HIMALAYAN BLACKBERRY,ENGLISH IVY, YELLOW ARCHANGEL, AND REED CANARYGRASS) THROUGHOUT THE PLANTING AREAUSING MECHANICAL AND CHEMICAL CONTROL TECHNIQUES DESCRIBED PREVIOUSLY.4. GENERAL WEEDING FOR ALL PLANTED AREAS:a. AT LEAST TWICE-YEARLY, REMOVE ALL COMPETING WEEDS AND WEED ROOTS FROM BENEATHEACH INSTALLED PLANT TO A DISTANCE OF 18 INCHES FROM THE MAIN PLANT STEM.b. MORE FREQUENT WEEDING MAY BE NECESSARY DEPENDING ON WEED CONDITIONS THATDEVELOP AFTER PLAN INSTALLATION.c. DO NOT WEED THE AREA NEAR THE PLANT BASES WITH STRING TRIMMER (WEEDWHACKER/WEED EATER). NATIVE PLANTS ARE EASILY DAMAGED OR KILLED, AND WEEDSEASILY RECOVER AFTER TRIMMING.5. WITHIN THE WETLAND BUFFER ONLY , MULCH THE WEEDED AREAS BENEATH EACH PLANT WITHWOODCHIP MULCH AS NECESSARY TO MAINTAIN A 4-INCH THICK MULCH RING AND KEEP DOWNWEEDS.6. DURING EXCEPTIONALLY DRY PERIODS, INSTALLED VEGETATION SHOULD BE WATERED ASNECESSARY USING A WATER TRUCK OR OTHER APPROVED METHOD.CONTINGENCIESIF THERE IS A SIGNIFICANT PROBLEM WITH THE RESTORATION AREA MEETING PERFORMANCESTANDARDS, THE RESTORATION SPECIALIST MAY DEVELOP A CONTINGENCY PLAN. IF REQUIRED ACONTINGENCY PLAN WILL BE SPECIFICALLY TAILORED TO CORRECTING KEY PROJECT FAILINGS.CONTINGENCY PLANS CAN INCLUDE, BUT ARE NOT LIMITED TO, ADDITIONAL GRADING, SOILAMENDMENTS, ADDITIONAL PLANT INSTALLATIONS, AND PLANT SUBSTITUTIONS OF SIZE QUANTITY,DENSITY AND/OR LOCATION.