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Permit File BLD-2020-0695 3939 Rock Ridge Parkway (6)
Job Address APN: City of Anacortes 904 6th Street P.O.Box 547 Anacortes, WA 98221-0547 (360) 293-1901 3939 ROCK RIDGE PKWY ANACORTES WA 98221 Remarks: NEW SFR Invoice/Permit #: Applied date: Issue date. Expire date: BLD-2020-0695 11 /06/2020 05/05/2022 Permit Type: Single Family Residence Permit Project: Owner: CAROL STRANDBERG Contractor: Address: 1420 18TH ST Address: ANACORTES WA98221-2312 Phone: Phone License #: STRANDBERG CONSTRUCTION PO BOX 319 ANACORTES WA 98221-0319 (360) 293-7431 General Information: Fees: Occupancy Group it-1 Building Permit Fee Use Zone R-2 Plan Review Fee # of Bedrooms 2 Mechanical Permit Fees New or Replaced Hard Surface 3923 Plumbing Permit Fee Lot Area 8483 State Building Code Fee Resi 1st Floor Square Footage 1537 Sewer Inspection Fee Garage Square Footage 503 Storm Drain GFC-Residential Porch Square Footage 291 Sewer GFC-Residential # of Wall Heaters 2 Park Impact Fee Stove, Appliance 1 Traffic Impact Fee Building Valuation 345825 Non Sprinklered SFR Fire Fee # of Heat Pumps <= 3 Hp 1 EMS Impact Fee # of Backflow Devices 1 SFR/duplex: site plan/design Stormwater Review # of Tubs, bath 1 Plan Application Fee # of Clothes Dryers 1 # of Clothes Washers 1 Total Calculated: # of Dishwashers 1 Deposits/Receipts: # of Gas Fireplace 1 Total Due: # of Gas Piping 2 # of Tankless Water Heaters 1 # of Water Piping 3 # of Hose Bibs 3 # of Kitchen Sinks 1 f *- , agor§*s.. - BLD-2020-0695 - 2020 3 _o�f,Ra g`e6I cWigna... 11/09/2020 12:56PM 1 #,of Shpv rs 2 o�� s ; . ' ±DBFRG CONSTRUCTION #�Ventllafion an�s.F 3 �Ofi* e°r'c�'os � I[ loin%)Residence Permit 2 PA�rrxi�nti ;-�-�nsi���� ono OD Transaction Amount: 10tJ.0C] CHECK: 040273 2,371.35 1,541.38 153.40 146.00 6.50 51.08 1,696.09 9,140.86 615.00 2, 765.69 100.48 356.26 60.00 313.84 200.00 19, 517.93 0.00 19, 517.93 C I T Y O F DATE: r� LOT ADDRESS: PLAT/DIVISION: A N A C O R T E S PERMIT NUMBER: DVi) ` i ozo ocg5 A S■ B U I L T ®SANITARY SEWER STORM SEWER BLOCK: SCALE: c o Storm Water Drainage Report Minimum Requirement 2 ENGINEERING DEPARTMENT 904 6t" Street Anacortes, WA 98221 www.anacorteswa.gov Official Use Only: (Information to Inspectors) FILE CUPY Required Storm Water Facility and other related requirements: Project Address: 3939 Rock Ridge Parkway Parcel Number: P1 4312 Permit Number: L Q -26 2u -G� �� FRONT OF REPORT: Submittal Date: 1 I / 1 % /Zc�Z C� Revision Number: Reviewer: qo'6 Fri a Acceptance Date (COA): a 2, Submittal Checklist: (All items listed below are required for a complete submittal) o Cover Sheet (Preparer to Provide): Project title, Location, Revision dates, Engineer's Stamp o TAB 2: Minimum Requirement #2 — Construction Stormwater Pollution Prevention (SWPP) o APPENDIX 1 - Survey performed by a Professional Land Surveyor o APPENDIX 2 - Soils Analysis (Volume 1, Chapter 3.1.1) o APPENDIX 3 - Model Soil Management Plan for BMP T5.13 o APPENDIX 4 - Determining Construction Site Sediment Damage Potential (Appendix 7) o APPENDIX 5 - Site Plan with all applicable information (Minimum Size 11x17 — 30 scale) o APPENDIX 6 - Documented Site Photos (North, South, East and West) o APPENDIX 7 - Drainage BMP Facility Maintenance Covenant, if applicable. To be recorded prior to the Temporary Certificate of Occupancy, Certificate of Occupancy or Final Acceptance, Stormwater Management Requirements: o Refer to the 2012\14 Department of Ecology Manual, as amended in 2014 for further required information. o See also, City of Anacortes Municipal Code 19.76 for additional information o See also, current Engineering Development Standards, Chapter 2- Storm Drainage for additional information. � N a NOV o s 2020 LD �a17Y" OF A.NAC®RTEc Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Project Description and Summary, Summary Table Existing Pro osed Development Type Residential Number of Lots 1 Lot Acreage in SF 8,483 sf Soil Type(s) GM, GC, SM, SC soils/ ROCK Site Sediment Transport Score Hi h\Low >100 Depth to Ground Water Table (Feet and Inches) See completed Soils Analysis Volume 1, Chapter 3.1.1) Infiltration Rate during Rainy Season Inch\Per Hour Impervious Surface on -site All? Site is predominantly rock. 3,923 sf Impervious Surface off -site New and Replaced Hard Surface Total SF 3,923 sf Lot Coverage (Percentage) 46% BMP (Required Minimum Requirement 5) BMP T5.13 Post Construction Soils Water Quality Method Minimum Requirement 6 Water Quantity Method (Minimum Requirement 7 Existing Site Conditions Summary: (Additionally, provide information on previous permits, if any, like Grade and Fill, Clear and Grade, topography, vegetation, drainage, Critical Areas adjacent to the site and how it may affect this project if soils are disturbed, Soils Type (Included in Soils Analysis Report), Erosion Problem Areas, Construction PhasinglSequence ) • The site was developed under the Rock Ridge South, Phase 5 , which has all the appropriate permits and has been accepted by the City of Anacortes Council and has been recorded. • The site is sloping mostly from the Center of lot to N,E,S, with level area mid site. The average sloping grade is around 10% for most of the lot with steeper slope at edges. • The site is part of of a common plan development. The development has the detention pond upsized for flow control fot Rock Ridge Phase 3. The report is part of the recorded subdivision and covered in Minimum Requirements 1,3,4,5,6,7,8,and 9 for each lot. This project is submitting Minimum Requirement 2. • A soils analysis was not done for this site as it is solid rock and is identified as impervious surface. • There are no known ccal areas on this site and no known erosion issues that might impact construction. • Construction Plan Sequencing (Note: sequence may not fall in this order, but close) o Installation of Erosion and Sedimentation BMP's. o Minor rock excavation work to ensure compliance with required BMP's under Minimum Requirement 5 and 6. o Installation of the footings and foundations. o Construction of the home. o Connection of the utilities to the home. o Installation of MR#5 required BMP's o Backfill of site with BMP T5.15 Post Construction Soils, Landscaping, driveway, driveway access. See Appendix - Model Soil Management Plan for BMP T5.13 Developed Conditions Summary: (Additionally, to be shown on the site plan. Identify cut and fill areas, proposed slopes of all hard surfaces , proposed contours) see site plan for contours Drainage Basin (2007 Storm Comp Plan —City website\publicworks\engineering\compre hens ive plans): What Drainage Basin are you in? G8 Identify any downstream drainage issues (Storm Comp Plan: Yes, Identified If so, describe: Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Problem Area #13 —Oaks Avenue and Georgia Avenue Problem: A natural depression exists on a parcel that will soon be developed. A pipe drains the depression to the North side of Oakes Ave. Solution: Install a trash rack like that described for Area 1*5 to keep pipe inlet clear of debris. Response: The natural depression was filled in revising the natural drainage path for this parcel insofar as raising the elevation. The natural discharge is still at the same location. This issue has bee resolved with development and does not affect this project. Problem Area #28 —Kansas Ave. and West 6t'' Street Problem: A shallow manhole is located at the intersection. Solution: The City has preliminary plans for the new storm system in this area. The new system will divert existing flows to Illinos Ave. The downstream system should be analyzed for capacity Complete the Applicability Requirements —Flow Chart (Figure I-2.4.1 Attached, Figure I-2.4.2 Attached and Figure 1.2.5.1 Attached) - Highlight the path and attach Version Date: October 7, 2019 Previous Version Date: February 20, 2019 start Here Does the site M�►ave or more of existing impervious coverage'' �4 r..�oes the project result it 5. COC square feet, or No greater, of new pus ---- "eolaced hard surface area Yes All Minimum Requirements apply to the new and replaced hard surfaces and converted vegetation areas_ DEPARTMENT Of ECOLOGY Mate of was�i�c�o^ Yes e S e m eRedevelopent Minirrurr _ equ, reanents and Flow Chart I;Figulre 1-4.2). 2 Does the project convert �= acres or more of t egetabon to lawn or landscaped areas, or �nvert 2.5 acres or more of native vegeL3ilon ;o p35ture? Minimum Requirements #1 through5 apply to the new and replaced hard surfaces and the land disturbed_ Yes Yes Figure No Does the protect resUlT In 2. W4' square feet, or greater, of new r replaced hard surface area No Does tt►e project have land ttisturbing activities of 7,000 square see° or greater^ No Minimum Requirement #2 applies_ Flow Chart for Determining Requirements for New Development Revlse�J ,tune 2€115 aa.pov,�cooyr�gh*.htr►nItor ooPYngnt �otioe mc�ud�ng �rrnls6►ons. �RIICataDr C' - _ "'' 3''� dI5C1aMT"ef. version uate: �ctoper i, Ludy rrevious version uate: reoruary Lu, Ludy Does the pTgect result in 2,()OG square ?feet, or more, of new plus replaced hard surface a! - OR t • i • • r • • - • u1 11 1 { • 1 • • - - Yes Minimum Requuements #t through #k' apply to the new and replaced hard surfaces and the land disturbed. No Minimum Requirement #t2 applies Does the prolect add S,�OC square feet or more of new hard surfaces"' OR Convert 34 acres or more of vegetation Lo lawn or landscaped areas? Uf2 Convert 2.5 acres or more of native vegetat►on to c --- 1=' Yes All Minimum Requirements apply to the new hard surfaces and the converted vegetation areas. All minimum req. are taken care of by common plan of development. Only minimum req. #2 is needed. Do the new hard sur=ace5 add 50% more to the exist, ng hard surfaces wlthlr the project limits"' Yes DEPARTIAENT OF ECaLCaGY :Mate o* Virasn��gto� No No additional NO requirements. � re�ated P,royt;�- Yes or mare of new hard surfac-_ Is the total Cfi nevi plus repiaC_�� hard = _ ,ci _ 5 C00 square feet or r'-vra. ^ ANO does the value of the proposed improvemer - including intencrr improvements -exceed 50% of the assessed value (or replacement All Minimum Requirements apply to the new and replaced hard surfaces and converted vegetation areas- Yes Figure I-2.4.2 Flow Chart for Determining Requirements for Redevelopment Re►'�s�� _gin-_-__ ��ease see tir�:.�uww ecy.wa.govAcooyngr.�.*.,hern; for �oPYngnt �otloe Inciu�mr F=rn�„�, rnitarOr 0*!t�vlllt} 3'±d t�15Cladrer. verswniy rrevwus verswn L.)aLe. reuruary ", Zu 1y 6 Toe Dro!ea Mscnarge to Flow Control Exemat Waim Iper Mlrwanum Requlr+enVnt ;MR; V7 i' Yes REQUIRED : Irnplerrent ate ttatowtIg BMPs where reame: and DepM•. .. BMP T5.1(1A, B. or C Downspout Fulli 1 - r4skmarst or Pww"d Swbmmfi on " Conrectrons Mw- 1 ,Flow 016per&W or ♦ - • NOT REQUIRED : ACtwevernent oR tlhe LID � �� �p� y,� Peftnnanoe Sfardard. Applytrg the omer Yes only MRs;pl ma"i @MPs Ir Ust Palof1.I6t *2. Yes NOT REQUhfdED A�clrer�ement at the _ID Dertbrrnarce =nMard. Yes REIIUIRED: Meet t� Ulr Rerrorrance Staerdard ttlrough tlx+ use o1�@�IlPsl In Me 2014 SWU VVAV exMt fir Rare) Gardens fV* use of Wretentlor Is accepm* . REQUIRED for ?TaleCtb Trtquertrlq MR fft-9': Apply' 8MP T5.1 � P+a6t Consttucibn SoN 0ua1" and Depth. Nl?T REQUIRED: Appr)'ng the BAAPs n L16t ilsl Cr Llst *f2. DEPARTMENT QF ECOLOGY State of wasningto� i 210• / , 1 I - I • r- i . • REQ1llRED: fktee2 the LID Per7orrance Standard mrvugrl iJne use oRaPAeMPts► in the 2Sl t d cjW VM W W e>oept ttx Rain Gardens ;tare use of 810rietentim is acceptable REQ°1J'IRED: Apply 8MP T5.13 P05t-0011sb1JC2�'t �0�' QUalall)r and Death_ NOT REQUIRED: Applying the BMPs In Llst �1 Or USt ;1r2. Figure I-2.5_ � Flow Chart for Determining LID NIR5 Requirements Re9'sed June 20 t Please see �1t�:.?IWsAtiY ecy.wa.gow�copyTfpt>t.Amrrtbr oopyAgrlt nonce InGuding perml6stOns, IrnitaOor of IlaDlttt)', and Ot6Clalnter. verslon ua>:e: vc>:oger i, �ula rrevlous version uate: regruary zu, zuply TAB 2 (MINIMUM REQUIREMENT #2) • 1-2.5.2 Minimum Requirement #2 — Construction Stormwater Pollution Prevention Plan (SWPP) All projects are required to complete Minimum Requirement 2. - Refer to the 13 Elements of the SWPP (See document below, complete and attach) See attached Table 4.1.1, Table 4.2.1 and Table Provide Engineering Calculations as an attachment for Sediment Ponds\Traps, Diversions, Waterways and Runoff/Stormwater Detention Calculations. The site was developed under Rock Ridge Phase 5, which had all the appropriate permits and has been accepted by the City of Anacortes City Council and recorded. The site is sloping mostly from the Center of lot to N, E, S, with level area mid site. The average sloping grade is around 10% for most of the lot with steeper slope at edges. This site is part of a Common Plan of Development. The development had the detention pond upsized for flow control for both Rock Ridge Phase 4 and 5. This was accepted April 12, 2018. The report is part of the recorded subdivision and covered Minimum Requirements 1, 31 41 5, 61 7, 8 and 9 for each lot. Therefore, this project is submitting Minimum Requirement 2 only A soils analysis has been completed for this site. It is mostly rock, but was used for the soil stockpile location of the development. The soil analsis shows no amendments needed. It is included under Tab 5. There are no known critical areas adjacent to this property that would offer any concern by building on this property, or any Erosion problems by building on this site. See attached 13 Elements of a Constructton SWPPP. The Site Plan will be added to the Appendix 4. BMP C162 Scheduling: Construction Sequencing: (Note: sequence may not fall in this order, but close) o Installation of Erosion and Sedimentation BMP's. o Minor rock excavation work to ensure compliance with required BMP's under Minimum Requirement 5 and 6. o Installation of the footings and foundations. o Construction of the home. o Connection of the utilities to the home. o Installation of MR#5 required BMP's o Backfill of site with BMP T5.15 Post Construction Soils, Landscaping, driveway, driveway access. See Appendix - Model Soil Management Plan for BMP T5.13 Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Table 4.1.1 Source Control BMP's by SWPPP Element Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Element#1 Element#2 Element #5 Element � Element #9 Element #11 Element #12 Element#13 BMP or Element Name Preserve Establish Stabilize Protect Control Maintain Manage the protect low VegetationlMark Construction Soils Slopes Pollutants BMPs Project Impact C learinQ Limits Access Development BMPC101: Preserving Natural Vegetation ✓ BMP C102: Buffer Zones ✓ ✓ BMP C103: High Visibility Plastic or Metal ✓ ✓ Fence BMPC105: Stabilized Construction ✓ Entrance IExit BMP C106: Wheel Wash ✓ BMP C107: Construction Road/Parking ✓ Area Stabilization BMP C120: Temporary and Permanent ✓ ✓ Seeding BMP C121: Mulching ✓ ✓ BMP C122: Nets and Blankets ✓ ✓ BMP C123: Plastic Covering ✓ BMP C124: Sodding ✓ BMP C125: Topsoiling / Composting ✓ BMP C126: Polyacrylar ide for Soil Erosion ✓ Protection BMP C130: Surface Roughening ✓ ✓ BMP C131: Gradient Terraces ✓ ✓ BMPC140: Dust Control ✓ BMP C150: Materials On Hand ✓ ✓ BMP C151: Concrete Handling ✓ BMP C152: Sawcutting and Surfacing ✓ Pollution Prevention BMP C153: Material Delivery, Storage and ✓ Containment BMP C154: Concrete Washout Area ✓ BMP C160: Certified Erosion and ✓ ✓ Sediment Control Lead BMP C162: Scheduling ✓ Table 4.2.1 Runoff Conveyance and Treatment BMP's by SWPPP Element Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Elemur�t A Fla msnt MI Element 47 Eiernent Eism wt Nt Element d10 Element M19 SMP or Elemnt Nurse Control Install Proboct Pbtect s Control Carrkal De- Protect how op► flRakes 8akrrrK Slopes Orain Iniets tans Paiut rds Watering hoped and Deals )Wfaimenent BW C2W. Mtareapior DMs and Avals ✓ ✓ P CZi0t: Grass-Lenad Channels ✓ P C202: Channel LW" ✓ P C203: Water Bars ✓ ✓ P CXW* PhDs Slope Drafts ✓ P C700: Subawtaos Drain ✓ BMP C20W Level Spreader ✓ AMP C207: Check Dorm J ✓ BMP C206: Trtangulsr Sit Dike (lieobxtie ✓ ✓ Cncmed Check Derr BMP C200: Oullat Prolee6on ✓ OMP C221k Slrxti Drain inlet P, lon- ✓ ✓ BMP C231: Srueb Sorrier ✓ BMP C232: Qrs"I Filler Baron ✓ BMP C233: Sit Fence ✓ ✓ BMP C234: V*9 tol d Strip ✓ ✓ BMP C23& Yanks ✓ MP C23111: Viegitsthre Flltrertion ✓ MP C2I0t Sodiansnt Try J ,/ BMP C2141: Temporary lledlinent Pond ✓ Or MP C21k Conertrucliolr Siorrsiralsr bardd Treatrn nt ✓ MP Cane Construction stanswslst Motion MP C262: High pH Notdrslfte fon Using ✓ BMP C2M pH Control fbr High pH O tar we 13 Elements of SWPPP Version Date: October 7, 2019 Previous Version Date: February 20, 2019 (Construction Stormwater Pollution Prevention Plan) Please check off boxes to show that each element has been read and understood. Provide details where applicable and if certain aspects are unnecessary or exempt, clearly justify. Details of the 13 Elements and the correlating BMPs are listed Above from the 2014 Stormwater Management Manual for Western Washington (SWMMWW). A link is provided on the City of Anacortes website, under Planning, Community, & Economic Development Department, as well as under Stormwater on the Engineering Division of Public Work's page. Owner Name: Carol Strandberg Site Address: 3939 Rock Ridge Parkway Prepared By: Kane Roeder The Stormwater checklist or building permit determined that: ❑ The 13 elements must be addressed for construction activity adding under 2,000 sq. ft. of hard surface area. X These elements must be addressed for construction activity adding 2,000 sq. ft. or more of hard surface area. This means that an attached narrative and site plan are required with this document. Under each element, provide the BMP's that will be applicable to your project. Use the attached Tables provided. ELEMENT 1: Preserve Vegetation/Mark Clearing Limits ❑ Before beginning land disturbing activities, including clearing and grading, clearly mark all clearing limits, sensitive areas and their buffers, and trees that are to be preserved within the construction area. ❑ Retain the duff layer, native top soil, and natural vegetation in an undisturbed state to the maximum degree practical. Site was cleared in approximately 2010 prior to the construction of Rock Ridge Phase V being constructed. Under a Clear and Grade permit for Rock Ridge Phase V, under brush and alder trees that had grown in the last 7 years was cleared off the lot. ELEMENT 2: Establish Construction Access ❑ Limit construction vehicle access and exit to one route, if possible. ❑ Stabilize access points with a pad of quarry spalls, crushed rock, or other equivalent BMPs, to minimize tracking onto roads. ❑ Locate wheel wash or tire baths on site, if the stabilized construction entrance is not effective in preventing tracking sediment onto roads. ❑ If sediment is tracked off site, clean the affected roadway thoroughly at the end of each day, or more frequently as necessary (ex: wet weather). Remove sediment from roads by shoveling, sweeping, or pick up and transport the sediment to a controlled sediment disposal area. ❑ Conduct street washing only after sediment is removed in accordance with the above bullet. ❑ Control street wash wastewater by pumping back on site or otherwise preventing it from discharging into systems tributary to waters of the State. We will utilize BMP C107 Construction RoadlParking Area Stabilization. The installation and maintenance specifications are attached to the 13 Elements. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 ELEMENT 3: Control Flow Rates ❑ Protect properties and waterways downstream of development sites from erosion and the associated discharge of turbid waters due to increases in the velocity and peak volumetric flow rate of stormwater runoff from the project site. ❑ Where necessary to comply with the bullet above, construct stormwater retention or detention facilities as one of the first steps in grading. Assure that detention facilities function properly before constructing site improvement (e.g, impervious surfaces). ❑ If permanent infiltration ponds are used for flow control during construction, protect these facilities from siltation during the construction phase. Since the site is solid rock with a layer of soil on top of the rock, The site will utilize BMP C162 Scheduling to help with flow control. Gutters will be installed with temporary downspouts to the gutter downspout piping to convey any potential increase in runoff away from the site. The projecf will utilize existing BMP C233 Silt Fence along the north, west, south, and east boundary. Additionally, the project will utilize BMP C212 Mulching along the west, south and east boundaries, along with BMP C235 Wattles if necessary. The site is sloping mostly from the Cenfer of lot to N, E, S, with level area mid site. If BMP C240 is necessary, the proposed location will be in the west/south portion of the lot, near bottom of slope. This BMP will need to be designed and reviewed by the COA prior to implementation. ELEMENT 4: Install Sediment Controls ❑ Design, install, and maintain effective erosion controls and sediment controls to minimize the discharge of pollutants. ❑ Construct sediment control BMPs (sediment ponds, traps, filters, etc.) as one of the first steps in grading. These BMPs shall be functional before other land disturbing activities take place. ❑ Minimize sediment discharges from the site. The design, installation and maintenance of erosion and sediment controls must address factors such as the amount, frequency, intensity and duration of precipitation, the nature of resulting stormwater runoff, and soil characteristics, including the range of soil particle sizes expected to be present on the site. ❑ Direct stormwater runoff from disturbed areas through a sediment pond or other appropriate sediment removal BMP, before the runoff leaves a construction site or before discharge to an infiltration facility. Runoff from fully stabilized areas may be discharged without a sediment removal BMP, but must meet the flow control performance standard in Element #3, bullet #1. ❑ Locate BMPs intended to trap sediment on -site in a manner to avoid interference with the movement of juvenile salmonids attempting to enter off -channel areas or drainages. ❑ Provide and maintain natural buffers around surface waters, direct stormwater to vegetated areas to increase sediment removal, and maximize stormwater infiltration. ❑ Where feasible, design outlet structures that withdraw impounded stormwater from the surface to avoid discharging sediment that is still suspended lower in the water column. The sediment controls have been identified on the site plan and are included in Appendix 4 of this report. BMP's that will be on -site for additional protection are: BMP C235 Straw Wattles, BMP C240 Temporary Sediment Trap (if necessary). ELEMENT 5: Stabilize Soils ❑ Stabilize exposed and unworked soils by application of effective BMPs that prevent erosion. Applicable BMPs include, but are not limited to: temporary and permanent seeding, sodding, mulching, plastic covering, erosion control fabrics and matting, soil application of polyacrylamide (PAM), the early Version Date: October 7, 2019 Previous Version Date: February 20, 2019 application of gravel base early on areas to be paved, and dust control. ❑ Control stormwater volume and velocity within the site to minimize soil erosion. ❑ Control stormwater discharges, including both peak flow rates and total stormwater volume, to minimize erosion at outlets and to minimize downstream channel and stream bank erosion. ❑ Soils must not remain exposed and unworked for more than the time periods set forth below to prevent erosion. o During the dry season (May 1 — Sept 30): 7 days o During the wet season (Oct 1 — Apr 30): 2 days ❑ Stabilize soils at the end of the shift before a holiday or weekend if needed based on the weather forecast. ❑ Stabilize soil stockpiles from erosion, protect with sediment trapping measures, and where possible, be located away from storm drain inlets, waterways, and drainage channels. ❑ Minimize the amount of soil exposed during construction activity. ❑ Minimize the disturbance of steep slopes. ❑ Minimize soil compaction and, unless infeasible, preserve topsoil. Exposed stock piles will be covered with BMP C123 Plastic Covering and other exposed areas with BMP C121 Mulching, ELEMENT 6: Protect Slopes ❑ Design and construct cut -and -fill slopes in a manner to minimize erosion. Applicable practices include, but are not limited to, reducing continuous length of slope with terracing and diversions, reducing slope steepness, and roughening slope surfaces (Ex: track walking). ❑ Divert off -site stormwater (run-on) or ground water away from slopes and disturbed areas with interceptor dikes, pipes, and/or swales. Off -site stormwater should be managed separately from stormwater generated on the site. ❑ At the top of slopes, collect drainage in pipe slop drains or protected channels to prevent erosion. o *Temporary pipe slope drains must handle the peak volumetric flow rate calculated using a 10- minute time step from a Type 1A, 10-year, 24-hour frequency storm for the developed condition. Alternatively, the 10-year7 1-hour flow rate predicted/indicated by an approved continuous runoff model, increased by a factor of 1.6, may be used. The hydrologic analysis must use the existing land cover condition for predicting flow rates from tributary areas outside the project limits. For tributary areas on the project site, the analysis must use the temporary or permanent project land cover condition, whichever will produce the highest flow rates. If using the Western Washington Hydrology Model (WWHM) to predict flows, bare soil areas should be modeled as "landscaped" area. o Where 15-minute time steps are available in an approved continuous runoff model, they may be used directly without a correction factor. ❑ Place excavated material on the uphill side of trenches, consistent with safety and space considerations. ❑ Place check dams at regular intervals within constructed channels that are cut down a slope. ❑ Consider soil types and its potential for erosion. ❑ Stabilize soils on slopes, as specified in Element 5. ❑ BMP combinations are the most effective method of protecting slopes with disturbed soils. Ex: Use both mulching and straw erosion control blankets. The Natural Discharge location will be protected by BMP C233 Silt Fence, ELEMENT 7: Protect Drain Inlets ❑ Protect all storm drain inlets made operable during construction so that stormwater runoff does not enter the conveyance system without first being filtered or treated to remove sediment. ❑ Clean or remove and replace inlet protection devices when sediment has filled one-third of the available storage (unless a different standard is specified by the product manufacturer). Version Date: October 7, 2019 Previous Version Date: February 20, 2019 ❑ Where possible, protect all existing storm drain inlets so that stormwater runoff does not enter the conveyance system without first being filtered or treated to remove sediment. ❑ Keep all approach roads clean. Do not allow sediment and street wash water to enter storm drains without prior and adequate treatment unless treatment is provided before the storm drain discharges to waters of the State. ❑ Inlets should be inspected weekly at a minimum and daily during storm events. Inlets will be protecting using BMP C220. A Supplement detail will WSDOT Standard Detail 1-40.20-DO Storm Drain Inlet Protection since DOE does not have an equivalent detail to use. ELEMENT 8: Stabilize Channels and Outlets ❑ Design, construct, and stabilize all on -site conveyance channels to prevent erosion from the following expected peak flows: o *Channels must handle same peak volumetric flow rate as temporary pipe slope drains listed in Element 6, above. ❑ Provide stabilization, including armoring material, adequate to prevent erosion of outlets, adjacent streambanks, slopes, and downstream reaches at the outlets of all conveyance systems. ❑ The best method for stabilizing channels is to completely line the channel with a blanket product first, then add check dams as necessary to function as an anchor and to slow the flow of water. The Natural Discharge location will be protected by BMP C233 Silt Fence. ELEMENT 9: Control Pollutants ❑ Design, install, implement, and maintain effective pollution prevention measures to minimize the discharge of pollutants. ❑ Handle and dispose of all pollutants, including waste materials and demolition debris that occur on -site in a manner that does not cause contamination of stormwater. ❑ Provide cover, containment, and protection from vandalism for all chemicals, liquid products, petroleum products, and other materials that have the potential to pose a threat to human health or the environment. On -site fueling tanks must include secondary containment. Secondary containment means placing tanks or containers within an impervious structure capable of containing 110% of the volume contained in the largest tank within the containment structure. Double -walled tanks do not require additional secondary containment. ❑ Conduct maintenance, fueling, and repair of heavy equipment and vehicles using spill prevention and control measures. Clean contaminated surfaces immediately following any spill incident. ❑ Discharge wheel wash or tire bath wastewater to a separate on -site treatment system that prevents discharge to surface water, such as closed -loop recirculation or upland land application, or to the sanitary sewer, with local sewer district approval. Wheel wash or tire bath wastewater should not include wastewater from concrete washout areas. ❑ Apply fertilizers and pesticides in a manner and at application rates that will not result in loss of chemical to stormwater runoff. Follow manufacturers' label requirements for application rates and procedures. ❑ Use BMPs to prevent contamination of stormwater runoff by pH -modifying sources. The sources for this contamination include, but are not limited to: bulk cement, cement kiln dust, fly ash, new concrete washing and curing waters, waste streams generated from concrete grinding and sawing, exposed aggregate processes, dewatering concrete vaults, concrete pumping, and mixer washout waters. Adjust the pH of stormwater if necessary to prevent violations of the water quality standards. ❑ Assure that washout of concrete trucks is performed off -site or in designated concrete washout areas only. Do not wash out concrete trucks onto the ground, or into storm drains, open ditches, streets, or streams. Do not dump excess concrete on site, except in designated concrete washout areas. Concrete spillage or concrete discharge to surface waters of the State is prohibited. Do not use upland land applications for discharging wastewater from concrete washout areas. ❑ Obtain written approval from Ecology and provide to the City before using chemical treatment other Version Date: October 7, 2019 Previous Version Date: February 20, 2019 than CO2 or dry ice to adjust pH. ❑ Woody debris may be chopped and spread on site. ❑ Conduct oil changes, hydraulic system drain down, solvent and de -greasing cleaning operations, fuel tank drain down and removal, and other activities which may result in discharge or spillage of pollutants to the ground or into stormwater runoff using spill prevention measures, such as drip pans. ❑ Clean contaminated surfaces immediately following any discharge or spill incident. Emergency repairs may be performed on -site using temporary plastic placed beneath and, if raining, over the vehicle. All chemicals, liquid products, petroleum products, solvents and other potentially environmental hazardous products will be locked in the site job trailer. BMP C154 Concrete Washout Area will be utilized. A Concrete Washout area has been installed within the Rock Ridge Phase IV and V subdivision. No fueling or oil changes are being performed on -site. Contractor will be required to have a Spill Kit on -site That is accessible by all workers on the project. ELEMENT 10: Control De -Watering ❑ Discharge foundation, vault, and trench dewatering water, which have characteristics similar to stormwater runoff at the site, into a controlled conveyance system before discharge to a sediment trap or sediment pond. ❑ Discharge clean, non -turbid de -watering water, such as well -point ground water, to systems tributary to, or directly into surface waters of the State, as specified in Element 8, provided the de -watering flow does not cause erosion or flooding of receiving waters or interfere with the operation of the system. Do not route clean dewatering water through stormwater sediment ponds. Note that "surface waters of the State" may exist on a construction site as well as off site; for example, a creek running through a site. ❑ Handle highly turbid or contaminated dewatering water separately from stormwater. ❑ Other treatment or disposal options may include: 1. Infiltration 2. Transport off -site in a vehicle, such as a vacuum flush truck, for legal disposal in a manner that does not pollute state waters. 3. Ecology -approved on -site chemical treatment or other suitable treatment technologies. 4. Sanitary or combined sewer discharge with local sewer district approval, if there is no other option. 5. Use of a sedimentation bag with outfall to a ditch or swale for small volumes of localized dewatering. ❑ Construction equipment operation, clamshell digging, concrete tremie pour, or work inside a cofferdam can create highly turbid or contaminated dewatering water. ❑ Discharging sediment -laden (muddy) water into waters of the State likely constitutes a violation of water quality standards for turbidity. The easiest way to avoid discharging muddy water is through infiltration and preserving vegetation. Site is solid rock. No Dewatering is anticipated ELEMENT 11: Maintain BMPs ❑ Maintain and repair all temporary and permanent erosion and sediment control BMPs as needed to assure continued performance of their intended function in accordance with BMP specifications. ❑ Remove all temporary erosion and sediment control BMPs within 30 days after achieving final site stabilization or after the temporary BMPs are no longer needed. Some temporary erosion and sediment control BMPs are bio-degradable and designed to remain in place following construction such as compost socks. ❑ Provide protection to all BMPs installed for the permanent control of stormwater from sediment and Version Date: October 7, 2019 Previous Version Date: February 20, 2019 compaction. All BMPs that are to remain in place following completion of construction shall be examined and placed in full operating conditions. If sediment enters the BMPs during construction, it shall be removed and the facility shall be returned to the conditions specified in the construction documents. ❑ Remove or stabilize trapped sediment on site. Permanently stabilize disturbed soil resulting from removal of BMPs or vegetation. See Element 3 above for additional BMP's that will be on hand for additional runoff measures. BMP's will be reviewed and inspected daily and revised accordingly. ELEMENT 12: Manage the Project —Projects subject to Minimum Requirements 1-9 must have a Certified Erosion and Sediment Control Lead (CESCL) for site inspections. Projects subject to Minimum Requirements 1-5 do not require the inspector to be certified. By the initiation of construction, the SWPPP must identify the CESCL or inspector, who shall be present on -site or on -call at all times. ❑ Phase development projects to the maximum degree practicable and take into account seasonal work limits to prevent soil erosion and prevent transporting sediment from the site during construction. ❑ Inspection and monitoring — Inspect, maintain, and repair all BMPs as needed to assure continued performance of their intended function. ❑ Maintain, update, and implement the SWPPP. ❑ Clearing and grading activities for developments shall be permitted only if conducted using an approved site development plan (e.g., subdivision approval). ❑ From Oct 1 through Apr 30, clearing, grading, and other soil disturbing activities is permitted only if shown that the site operator will prevent silt -laden runoff from leaving the site through a combination of the following: 1. Site conditions including existing vegetative coverage, slope, soil type, and proximity to receiving waters. 2. Limit activities and the extent of disturbed areas. 3. Proposed erosion and sediment control measures. Weather conditions can influence the seasonal limitation on site disturbance. The City of Anacortes has the authority to take enforcement action per AMC 19.76 Stormwater. ❑ The following activities are exempt from the seasonal clearing and grading limitations: 1. Routine maintenance and necessary repair of erosion and sediment control BMPs; 2. Routine maintenance of public facilities or existing utility structures that do not expose the soil or result in the removal of the vegetative cover to soil 3. Activities where there is 100% infiltration of surface water runoff within the site in approved and installed erosion and sediment control facilities. Since this lot is part of a Common Plan of Development a qualified CESCL will be on -site. A sign will be posted on -site with a name and 24-hour number. ELEMENT 13: Protect Low Impact Development BMPS ❑ If implementing any bioretention facilities or rain gardens, refer to the applicable BMP sections of the Manual for requirements. There is no Low Impact Development BMPs proposed with this project. icant Signature Date Version Date: October 7, 2019 Previous Version Date: February 20, 2019 APPENDIX 1 - Survey performed by a Professional Land Surveyor The object of this appendix is to ensure that the property has a minimum of 3 out of 5 property corners visible to ensure that the structures are placed within the required setbacks. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 6009-662 (099) M96 VI 'SZIHOJVNV IZ996 VI '9213009UV OVOH H)m U SIHI 02C6 6TC XOH Od 'S'7'd '7d 9VJSOHIHHH 'A Ma 3m IN ylmmnH HH MOW 9Nld8AUS v7 9N12LUNION8 q}no aJptH 13og ulnoS a Pig vog = �, QVsSOIWWL7H 1 9 Hd a P?g KaoH Uuld al!S He19AO I U �$ a �tl x$ - SQNiV7 .LS,�2I0.3 _<NW �- Q{OQ J J+p+.}i`' `ate`•' `•�.y p ns`,a y W \ ,.t .�. $ P, �'- _ ^� b• \�••' ��� � sea. xitt 77 M W m th Lci rr^^ bb .• APPENDIX 2 — Soils Anaylsis (Volume 1, Chapter 3.1.1) Version Date: October 7, 2019 Previous Version Date: February 20, 2019 � k 4 § \ 2 § 2 Q O a m 0 a » \ E 000) CIMMINE 2 k k k x Q 2 mQ {Lk E 2 J k Emmom v cc\ \ �\ 2 / 0 2 0 \ 0 \ d °e \k f § E§ k E $ \ / \: \k /K \ /\\" \\ #\ /)& /& )& )EO � \elr !«E \\\ }\ }\ /\ /( _ E \d/ K ))/E \& )\ 2 E /\ a ; § Q / \ H % y § § S m j \ 0 / t e 2 I / \ 0 APPENDIX 3 —Model Soil Management Plan for BMP T5.13 An alternate document acceptable to the City of Anacortes is a Test Report provided by the Soils Supplier that identifies the soils to be used meet the specifications outlined under Minimum Requirement 5. The specifications are in both WSDOT and CSI Formats. For specifications, refer to the above referenced PDF. This submittal can be a deferred submittal since most projects are not sure who the supplier will be at the time of building permit application. For projects that trigger Minimum Requirements 1 through 5, the Test Report will be provided to the Building Department. Projects triggering Minimum Requirements 1 through 9, the Test Report will be provided to the Engineering Department. BMP T5. ?3 to be a deffered submittal, to be completed at final grading Version Date: October 7, 2019 Previous Version Date: February 20, 2019 DEFERRED SUBMITTAL. PROVIDE A TEST REPORT FROM SOILS SUPPLIER TO THE BUILDING DEPT. PROJECT INFORMATION "Model Soil Management Plan for BMP T5.13 age # of pages Complete all information on page I; onlv site address and permit number on additional Dages. Site Address / Lot No.: Permit Type: Permit Number: Permit Holder: Phone: Mailing Address: Contact Person: Phone: Plan Prepared By: ATTACHMENTS REQUIRED Check o re uired items that are attached to this lap) _ Site Plan showing, to scale: Areas of undisturbed native vegetation (no amendment required) New planting beds and turf areas (amendment required) Type of soil improvement proposed for each area Soil test results (required if proposing custom amendment rates Product test results for Droaosed amendments AREA # (should match Area # on Site Plan) PLANTING TYPE Turf _Undisturbed native vegetation Planting Beds Other: SQUARE FOOTAGE OF THIS AREA: square feet SCARIFICATION inches (depth) of scarification needed to achieve finished total 12" loosened depth. Subsoil will be scarified PRE -APPROVED inches of compost or imported topsoil applied AMENDMENT METHOD: X 3_1 (conversion factor, inches to cubic yards) PRODUCT: Topsoil import = cu. yards per 1,000 sq. ft. Amend with compost X ,000s sq.ft. in this area Stockpile and amend = cubic yards of amendment QUANTITY: CU. YDS. cu. yds. stockpiled) needed to cover this area to designated depth) CUSTOM AMENDMENT Attach test results and calculations. Topsoil import inches organic matter or topsoil import PRODUCT: Topsoil & compost lift X 3_1 Amend = cu. yards / 1,000 sq. ft. Stockpile and amend X ,000s sq.ft. in this area cu. yds. stockpiled) = cubic yards of amendment QUANTITY: CU, YDS. MULCH ,000 sq.ft. PRODUCT: X 6.2 (conversion, to give 2 inch mulch depth) = cubic yards of mulch -> -> -> QUANTITY: CU. YDS. TOTAL AMENDMENT/TOPSOIL/MULCH FOR ALL AREAS Date: Inspector: Approved: Revisions Required: Date: Inspector: Approved: Revisions Required: Version Date: October 7, 2019 Previous Version Date: February 20, 2019 APPENDIX 4 — Determining Construction Site Sediment Damage Potential (Appendix 7 — NPDES Phase II Permit) Note: See attached. All projects within the City of Anacortes are required to complete that document under Appendix 4. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Western Washington Phase H Stormwater Permit i. APPENDIX 7 - Determining Construction Site Sediment Damage Potential The following rating system allows objective evaluation of a particular development site's potential to discharge sediment. Permittees may use the rating system below or develop alternative process designed to identify site -specific features which indicate that the site must be inspected prior to clearing and construction. Any alternative evaluation process must be documented and provide for equivalent environmental review. Step one is to determine if there is a sediment/erosion sensitive feature downstream of the development site. If there is such a site downstream complete step two, assessment of hydraulic nearness. If there is a sediment/erosion sensitive feature and it is hydraulically near the site then go to step three to determine the construction site sediment transport potential. STEP 1 — Sediment/Erosion Sensitive Feature Identification Sediment/erosion sensitive features are areas subject to significant degradation due to the effect of sediment deposition or erosion. Special protection must be provided to protect them. Sediment/erosion sensitive features include but are not limited to: i. Salmonid bearing fresh water streams and their tributaries or freshwater streams that would be Salmonid bearing if not for anthropogenic barriers; HO Lakes; iii. Category I, II, and III wetlands; IV* Marine near -shore habitat; v. Sites containing contaminated soils where erosion could cause dispersal of contaminants; and vi. Steep slopes (25% or greater) associated with one of the above features. Identify any sediment/erosion sensitive features, and proceed to step two. If there are none the assessment is complete. i. STEP 2 — Hydraulic Nearness Assessment Sites are hydraulically near a feature if the pollutant load and peak quantity of runoff from the site will not be naturally attenuated before entering the feature. The conditions that render a site hydraulically near to a feature include, but are not limited to, the following: i. The feature or a buffer to protect the feature is within 200 feet downstream of the site. ii. Runoff from the site is tight -lined to the feature or flows to the feature through a channel or ditch. Potential Page 1 of 3 Version Date: October 7, 2019 Previous Version Date: February 20, 2019 A site is not hydraulically near a feature if one of the following takes place to provide attenuation before runoff from the site enters the feature: iv. Sheet flow through a vegetated area with dense ground cover v. Flow through a wetland not included as a sensitive feature vi. Flow through a significant shallow or adverse slope, not in a conveyance channel, between the site and the sensitive feature. Identify any of the sediment/erosion sensitive features from step one that are hydraulically near the site, and proceed to step three. If none of the sediment/erosion sensitive features are hydraulically near the site, the assessment is complete. . STEP 3 —Construction Site Sediment Transport Potential Using the worksheet below, determine the total points for each development site. Assign points based on the most critical condition that affects 10% or more of the site. If soil testing has been performed on site, the results should be used to determine the predominant soil type on the site. Otherwise, soil information should be obtained from the county soil survey to determine Hydrologic Soil Group (Table of Engineering Index Properties for step 1.D) and Erosion Potential (Table of Water Features for step 1.E) When using the county soil survey, the dominant soil type may be in question, particularly when the site falls on a boundary between two soil types or when one of two soil types may be present on a site. In this case, the soil type resulting in the most points on the rating system will be assumed unless site soil tests indicate that another soil type dominates the site. Use the point score from Step 3 to determine whether the development site has a high potential for sediment transport off of the site. Total Score <100 ❑100 Transport Rating Low High A high transport rating indicates a higher risk that the site will generate sediment contaminated runoffI Construction Site SedimentTransport Potential Worksheet A. Existing slope of site (average, weighted by aerial extent): Points 2% or less "so MOM .............................................................................................. 5 >5-10%..........................................................................................15 >10-15%........................................................................................30 >15%.............................................................................................50 B. Site Area to be cleared and/or graded: <51000 sq. ft ................................................................................... 0 5,000 sq. ft. — 1 acre.....................................................................30 >1 acres.......................................................................................50 C. Quantity of cut and/or fill on site: <500 cubic yards............................................................................0 500 — 5,000 cubic yards................................................................... 5 >5,000 — 10,000 cubic yards.......................................................a 10 >10,000 — 20,000 cubic yards......................................................25 >20,000 cubic yards............................................................ ......",40 D. Runoff potential of predominant soils (Natural Resources Conservation Service): Hydrologic soil group G. Depth of cut or height of fill >10 feet: Yes............................................................................................... 25 No.........................................................................................................10 4. Clearing and grading will occur in the wet season (October 1 — May 1): Yes............................................................................................... 50 No.........................................................................................................1 0 TOTALPOINTS.............................................................................................>100 I I 1 If no surface or groundwater enters site, give 0 points. APPENDIX o — Site Pian with ail applicable information (Minimum Size 11x17 at a legible scale) Site plan attached, I ix I f also submitted as well as full sized scaled set. 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OCR Z,Cg: 3� rir la CWi 5 s'ev9y /'� 3 N )< Z ?Em32Wow $ l� 11� 9I rt _ .�5i rc Is- HP i j p� V 092 IY k @s 8 ad / gtY _3 g8® M5Wam omw 63 W as /f/ /�/ 'X "o �€ � r O A�E3 O' '. a ala#�#' / FgY i£wow] 33SI gong Q V �o�n gP3�/�U °5E""S'� ;MM 3 m.§eke Isg3{° ��ta $*''iO4 Slnsse -- — — — APPENDIX 6 - Documented Site Photos (Show all directions of the site, including frontage) Location: Frontage Along Rock Ridge Parkway Description of the photo: Looking NW From Rock Ridge Parkway Photo taken by: Kane Roeder Location: Frontage Along Rock Ridge Parkway Description of the photo: Looking N From Rock Ridge Parkway Photo taken by: Jason Sterling Id ,� ;4 ''S �9 fJ w a Y _ _ ...l.k'.•3y� .y _�ba rN 31 14 ol 3 a J. STERLING J. STERLING as I • E 1/8 - 11U.N.O. LL FIRE HYDRANT 929 -83' TO PROPERTY 11-4-2020 a ass .1 Pp 2 elf T H j..I LF ELEV L\ �rq^. ```'Y. µ. \ f I l A A N PATIO W ° f— .D _<' SOIL STOCKPILE I \ �, `�;`�-�_ LANDSCAPE LEGEND tv atv � ', SFR --- LAWN AREA OR 3 " \ ""4801� ' ill GARAGE FF=476' // F7 EXISTING VEGETATION �1`011 FF=476' I / r 3 r (� / CONCRETE DRIVE VICINITY MAP- NO SCALE I I ` coVD t / n .\ v J DRII E $WAY D ENTRY LOT 1 � / ;'�� � MULCH - PLANTING BED p�F 81483 SF �2 / E ZONE R-2 aE ; `� y/ EXISTING BEDROCK It DECIDUOUS TREE a / LL �_� o I LU W X Of _ s, �a LU 00 O On 1 1/ , v I 10'-01i t CONIFER TREE j p z o R C0 la W , i� ' ' Y / Q. ' 0 161 I 0"--.� < f,f'" e % - f " '3 J SHRUBS /PLANTINGS -� Ems., - i / / / j / MINIMUM TREE DENSITY O C� W Y N �Tb�' ,'/'/ Calculation ofteTotal Tree Units Required. The total number of treeunS required ~ U a 20'FR--_-- '/ pmw by regulated prole pens approval tistetl n LU ' Seca tletlb be calculated byd conservation on l t j ' Section a steel riglh f6ytbyone thousand Table 16.5e area, minus any public In / calcor ulation meth unitsreWe1dfort epro.Tharerovalsult the Z LJ,J Z I.LI ' calculatlonwillbathetolelnumberoftreeunitsrequiredforthepmlec[approval W Q W (� I - \\\\� / � � , within the bu0din9 site. J l �_ LOT SIZE:8,483 SOFT TREES REQUIRED:9 U Z _ � F ---- ---- 4 ,' =' / / i LOT INFORMATION U w (Yj O LOT SIZE: 8,483 SQ.O L 0 0 Q FT. CLEARING LIMRAREA: ENTIRE LOT uJ Z � r_ MAX BUILDING COVERAGE (35%):2969 SQ.FT. ACTUAL BUILDING COVERAGE (24%) = 2037 SQ.FT. ♦ / IMPERVIOUS ROOF AREA W/ OVERHANGS: 2600 SCLFT. ----- `v / e SNARED CONCRETE GEDEV-OPMEND t l IMPERVIOUS DRIVEWAY& SIDEWALK AREAS: 1323 SQ.FT. Ct OFFSITEAT ROCK RIDGE DEVELOPMENT t. i — C2 _ -' TOTAL IMPERVIOUS AREA: 3923 SQ.FT. FILE COPY PARCEL# P134312 W Y / ADDRESS: 309 ROCK RIDGE PARKWAY, ANACORTES, WA 9=1 D ' �.OWNER: STRANDBERG MINIMUM REQUIREMENT #2 BMP'S €�ga gee P l� g C2 SOIL QUALITY DEPTHUC z .._.._. _. _ y B� MU BMP C233: SILT FENCE J E Nov 0 6 2020 e8g I I ? BMP C705: STABILIZED CONSTRUCTION LIJ l - C2 ENTRANCE / EXITwa €ooze - lF A Nit e STORM DRAIN INLET PROTECTION 110 FIRE HYDRANT 923 2 E BMP C235: WATTLES OWNER APPROVAL Q BMP C154: CONCRETE WASHOUT AREA (9) BMP C235: WATTLES © BMP C105: STABILIZED CONSTRUCTION ENTRANCE / EXIT Q BMP T5.13: POST -CONSTRUCTION SOIL QUALITY AND PURPOSE PURPOSE PURPOSE DEPTH J. STERLING PREVENT OR REDUCE THE DISCHARGE OF POLLUTANTS TO STORMWATER FROM CONCRETE WASTE BVCONDUCTING WATTLESARE TEMPORARY EROSION AND SEDIMETCONTROLBARAWRS CONSISTING OF STRAW, COMPOST, OR GTHR STABILIZED CONSTRUCTION ENTRANCES ARE ESTABLISHED TO REDUCE THE AMOUNT OF SEDIMETTRANSPORTED ONTO WASHOUT OFFSITE, OR PERFORMING CNSITE WASHOUT INADESIGNATED AMATO PREVET POLLUTANTS FROM ENTERING SURFACEWATERS OR GROUND WATER. MATERIALTHAT IS WRAPPED IN BIODEGRADABLETUBUTARPtASTIC OR SIMILAR ENCASING MATERIAL.THEYREDUCETHE VELOCITYAND CAN SPREAD THE FLOW OF RILLAND SHEETRUNOFFAND CAN CAPTUREAND RETAIN SEDIMENT.WATTLES PAVED ROADS BY VEHICLES OR EOUIPMENLTHIS IS DONE BY CONSTRUCTING ASTABIUM PAD OF OUARRYSPALLS AT ENTRANCES AND EMS FOR CONSTRUCTION SITES. RIonSEAUDDEEINMION NgTURALLV OCCURRING(IINDISTURBEO)SOILANp VEGETATION PROVIDE IMPORTANT STORMWATER FUNCTIONS SORMWTRFPOLLUTANT CONDITIONS OF USE ARE TYPICALLY 8 TO 10 INCHES IN DIAMETER AND 25 TO 30 FEET IN LENGTH. WATTLES ARE PLACED IN SHALLOW TRENCHES CONDITIONS OF USE CONSTRUCTION INCLUDING: WATERINFILTRATION;NTD)SOISEDIMENT,AND POLLUTATADSORTANT INCLUDING:W;WATRIT TEM;NUT TENTS NDTRANANDPON;AANTND ADSORPTION:SEDIMENT AND THESE FUNCTIONS BIOFILTRATIONLARGELVLOSTER IWERFLOWSOR HESEFUCTIO J. STERLING CONCRETEWASHOUTARFABESTMANAGEMETPRACTILESAREIMPLEMENTEDONCONSTRUCnONPRWECTSWHRE: AND STAKEDALONG THE CONTOUR OF DISTURBED OR NEWLY CONSTRUCTED SLOPES. SEE FIGURE IL4214 WATTLES (P. 378) FOR TYPICAL CONSTRUCTION DETAILS, WSDOT STANDARD PLAN LW.30-0OALSO PROVIDES INFORMATION ON WATTLES ENTRANCES SHALL BE STABIMZED WHEREVER TRAFFIC WILL BE ENTERING OR LEAVINGA CONSTRUCTION SUE IF PAVED ROADS OR OTHER PAVEDAREASARE WITHIN 1,000 FEETOF THE SITE. FOR RESIDENTIAL CONSTRUCTION STRINDTRASMIWIOOILANDVEGTAPNTD ANDRRLACES E - CONCRETE IS USEDASA CONSTRUCTION MATERIAL. - IT IS NOT POSSIBLE TO DISPOSE OF ALL CONCRETE WASTEWATRAND WASHOUT OFFSRE(READY MIX PLANT ETC.). (HTTPJNAWJ.WSDOTWA.GWMESIGNISTANDARDWPLANS.HTMM ECTIONI) PROVIDE STABILIZED CONSTRUCTION ENTRANCES FOR EACH RESIDENCE, RATHERTI-AN ONLYATTHE MAIN SUBDIVISION ENTRANCE. STABILIZED SURFACES SHALL BE OF SUFFICIENT LENGTHMgDTH TO PROVIDE VEHICLE ACCESWARKING, TOPSOILAND SOD, NOT ONLYARE THESE IMPORTANT STORMWATER FUNCTIONS LOST BUT SUCH IANDSCAPES THEMSELVES BECOME POLLUTION GENERATING PERVIOUS SURFACES DUE TO INCREASED USE OF PESTICIDES, - -' 1I4"-1' U.N.O. - CONCRETE TRUCKS, PUMPERS, OR OTHER CONCRETE COATED EQUIPMENT ME WASHED ONSRE. NOTE IF LESS THAN CONDITIONS OF USE BASED ON LOTSQFJCONFIGURATION. ON LARGE COMMERCIAL,HIGHWAY,ANO ROAD PROJECTS, THE DESIGNER SHOULD FERTILPERSAND OTHER LANDSCAPINGAND HOUSEHOLDANDUSTRIA.CHEMICALS, THE CONCENTRATION OF PETWASTES, AND POLLUTANTS THATACCOMPANY ROADSIDE LITTER, ESTABUSHING SOIL QUALITYAND DEPTH REGAINS GREATER a 10 CONCRETE TRUCKS OR PUMPERS NEED TO BE WASHED OUT ONSTfE, THEWASHWATER MAYBE DISPOSED OF INA FORMEDAREAAWATTING CONCRETE OR AN UPLAND DISPOSAL SITE WHERE ITWILL NOT CONTAMINATE SURFACE OR USEWATTLES: - IN DISTURBED AREAS THAT REQUIRE IMMEDIATE EROSION PROTECTION. INCLUDE ENOUGH EXTRA MATERIALS IN THE CONTRACTTOALLOW FOR ADDITIONAL STABIUZED ENTRANCES NOT SHOWN IN THE INITIAL CONSTRUCTION SWPPP. IT IS DIFFICULT TO DETERMINE EXACTLY WHREACCESS TO THESE PROJECTS WILL STORMWATER FUNCTIONS IN THE POST DEVELOPMENT IANOSCAPE, PROVIDES INCREASED TREATMENT OF POLLUTANTS u GROUND WATER THE UPLAND DISPOSAL SITE SHALL BE AT LEAST SO FEET FROM SENSITIVE AREAS SUCH AS STORM - ONE)UPOSED SOILS DURING THE PERIOD OF SHORT CONSTRUCTION DELAYS, OR OVER WINTER MONTHS. TAKE PLACE; ADUMONAL MATERIALS WILL ENABLE THE CONTRACTOR TO INSTALL THEM WHERE NEEDED. AND SEDIMENTS THAT RESULT ROM DEVELOPMENT AND HABITATION, AND MINIMIZES THE NEED FOR SOME LANDSCAPING G POLLUTION THROUGH PREVENTION. CHEMICALS, THUS REDUCING DUCINnNC O DRAINS, OPEN DITCHES, OR WATER BODIES, INCLUDING W WETLANDS, - ON SLOPES REQUIRING SUMMATION UNTIL PERMANENT VEGETATION CAN BE ESTABLISHED, APP!K•nnnuenun! - THE MATERIAL USED DICTATES THE EFFECTIVENESS PERIOD OF THE WATTLE. GENERALLY, WATTLES ME TYPICALLY EFFECTIVE FOR ONE TO TWO SEASONS. ESTABLISHING A MINIMUM SOIL OUALITYAND DEPTH IS NOT THE SAME AS PRESERVATION OF NATURALLY OCCURRING SOIL 11-4"Z020 3 -PREVET FILLING BENEATH WATTLES BY PROPERLY ENTRENCHING AND ABUTTING WATTLES TOGETHER TO PREVENT AND VEGETATION, HOWEVER, ESTABLISHING MINIMUM SOIL OUALITYAND DEPTH WILL PROVIDE IMPROVED ONSITE MANAGEMENT OF STORMWATER FLOW AND WATER QUALITY. SOIL ORGANIC MATTER CAN BE ATTAINED THROUGH WATER FROM PASSING BETWEEN THEM. NUMEROUS MATERIALS SUCH AS COMPOST, COMPOSTED WOODY MATERIAL, BIOSOLIDS, AND FOREST PRODUCT DESIGN CRITERIA RESIDUALS.IT IS IMPORTANTTHAT THE MATERIALS USED TO MEET THE SOIL QUALI NAND DEPTH BMP BE APPROPRIATE - INSTALL WATTLES PERPENDICULAR TO THE FLOW DIRECTION AND PARALLEL TO THE SLOPE CONTOUR NOTTOSCALE AND BENEFICIAL TO THE PLANT COVER TO BE ESTABLISHED. LIKEWISE, IT IS IMPORTANT THAT IMPORTED TOPSOILS IMPROVE SOIL CONDITIONS AND DO NOT HAVEAN EXCESSIVE PERCENT OF CLAY FINES. THIS BMP CAN BE CONSIDERED 9m Mtatren OF 3-TOINFALL,T ON CLAY SOILS -NARROW TRENCHESSHOULDE DUGLOOSES SOILS, SLOPE ON CONTOUR ATO REAS WITH OLDB WITH GRADUAL.SLOPES.OF SLOPES, AS WIF THE TRENCHES /`DESIGN! INFEASIBLE ON TILL SOIL SLOPES GREATER THAN 33 PERCENT. c sM Be }goy SHOULD5-ONLOOSE,OR HICKN SHOULD BE DUG LDING TRIENCO A E A DIN TAILINGING OR WATTLES TOYFROM THE BASE OFTHESOFTHEWATTLE. F THE THICKNESSTHE WATTLE. - E BASE OF THE S D WOW SPREAD ALONG TALLUPHILL SOIL RETENTION.RETAIN, IN AN UNDISTURBED STATE, THE DUFF LAYER AND NATIVE TOPSOILTO THE MAXIMUM EXTENT 3 atlea EXCAVATED OR OP. CAVT EDIMATERIREENENL AND CO AND TA COMPACTED USINGHANDTAMPINGE OTHER METHODS. / �- PRACTICABLE IN ANYAREAS REQUIRING GRADING REMOVEANO STOCKPILE THE DUFF LAYER AND TOPSOIL ON SITE IN DESIGNATED, CONTROLLED AREA, NOTADJACETTO PUBLIC RESOURCES AND CRITICALAREAS, TO BE REAPPLIED TO Brrlmg CONSTRUCTTRENCHESINTERVALS OF ESATI TERVATHEUPHILLS FETD YrFEET DEPENDING ON THE STEEPNESS OF THE SLOPESOILTYPE,AND -CNFSL /` OTHER PORTIONS OFTNE SITE WHERE FEASIBLE, EST ECHESAT SM RAINFALLTHE WATTLES SNUGLY THCLOSERTOGETHERTIIETHTLY EN. -INSTALLTHE WATTLES SNUGLY INTO TIIETRENCHE3 ANDABTTIGHRY END TO ENO. DO NOT OVERLAPTHE ENDS. !� -SOILOUAUTY.ALLAREAS SUBJECT TO CLEARINGAND GRADING THAT HAVE NOT BEEN COVERED BY IMPERVIOUS -Berm Sandbag -INSTALLSTAKESATEACH END OFTHEWATTUEANDAT4-FOOT CENTERSALONG ENTIRE LENGTH OFWATTLE. ��Yy /%� a� -rl,-+ SURFACE, INCORPORATED ITOA DRAINAGE FACILITY OR ENGINEREDAS STRUCTURAL FILL OR SLOPE SHALL, AT PROJECTCOMPLETION, DEMONSTRATETHE FOLLOWING: Iq aq POrs6c rrg �^ -IF REQUIRED, INSTALLPILOTHOLES FORTHESTAKES USINGASTRAIGT BARTO DRIVE HOI-ESTHROUGHTHEWATTLE ANOODE RQ ,.rfZY' 15r1T� }�� .✓ t.ATOPSOILLAYERWTTHAMINIMUM ORGANIC WITTERCOTENTOF 10% DRVWEIGT IN PLANTING BEG%AND 5% ORGANIC MATTER CONTENT IN TURFAREAS, AND A PH FROM 6.0 TO 8.0 OR MATCHINGTHE PH OFTHE UNDISTURBED SOIL. �Z (} Val O A A STAKES -WOODEN STAKES SHOULD BE APPROXIMATELY 3/4 %3r4X 241NCHE5 MIN. WILLOW CUTTINGS OR 3l&INCH REBAR CAN ALSO BE USED FOR STAKES. L ,1>!-K THE TOPSOIL LAYER SHALL HAVEAMINIMUM DEPTH OF EIGHT INCHES EXCEPT WHERETREE ROOTS UNIT THE DEPTH OF Ym - " - STAKES SHOULD BE DRIVEN THROUGH THE MIDDLE OF THE WATTLE, LEAVING 2 TO 3 INCHES OF THE STAKE PROTRUDING ABOVETIIE WATTLE. I '�} - 1 y.{^ '�r � � INCORPORATION OF AMENDMENTS NEEDED TO MEET THE CRITRW SUBSOILS BELOW THE TOPSOIL LAYER SHOULD BE RIEIEDAT LEAST4INCHES WITH SOME INCORPORATION OF THE UPPER MATERIAL TO AVOID STRATIFIED LAVERS, LU �N � F t Q � WHERE FEASIBLE. WH - Bann MAINTENANCE STANDARDS \ 2, MULCH PUNTING BEDS WITH 2 INCHES OF ORGANIC MATERIAL 3. USE COMPOSTAND OTHER MATRIALSTHAT MEETTHESE ORGANIC CONTENT REQUIREMENTS 0 Q -WATTLES MAY REQUIRE MAINTENANCETO ENSURETHEYARE IN CONTACT WITH SOILAND THOROUGHLY ENTRENCHED, ESPECIALLYAFTER SIGNIFICANT RAINFALL ON STEEP SANDY SOILS. A. THE ORGANIC CONTENT FOR •PREAPPROVED'AMENDMENT RATES CAN BE MET ONLY USING COMPOST MEETING THE COMPOST SPECIFICATION FOR BMP TT.311; BIORE1NTION CELLS, SWALES, AND BOXES(P.959), WITH THE 3 cD Slgefron AAA -` r � tlRY n'pn. PLANTER EXCEPTION THAT THE COMPOST MAY HAVE UP TO 36% SIOSOUDS OR MANURE. THE COMPOST MUSTALSO HAVE AN 70 3 )U rriadcsSa Lady ` Plan r" ORGANIC MATTER CONTENT OF 40%TO 65%, AND CARBON TO NITROGEN RATIO BELOW 25:1. THE CARBON TO NITROGEN Notq: 1. Mhollyere -•'" J RATIO MAYBE AS HIGH AS 35:1 FOR PLANTINGS COMPOSED ENTIRELY OF PLANTS NATIVE TO THE PUGET SOUND LOWLANDS REGION. ey tleW Wrya mrtw fatl. Type "Below Grade" a,aNa dt++an'sY= B. CALCULATEDAMENDMENT RATES MAY BE METTHROUGH USE OF COMPOSTED MATERIAL MEETING (A.)ABOVE OR z. AewuebwaMW OTHER ORGANIC MATERIALSAMENDED TO MEETTHE CARBON TO NITROGEN RATIO REQUIREMENTS, AND NOT EXCEEDING sin slMll ha "vrsL1W aiswtgtMta ism % y\ THE CONTAMINANT LIMITS IDENTIFIED IN TABLE 220S, TESTING PARAMETERS, IN WAC 173S50-220, g Penn" 10m Mroe roatlsCe Was andei 4-S ry THE RESULTING SOIL SHOULD BE CONDUCIVE TO THE TYPE OF VEGETATION TO BE ESTABLISHED.quesu '4 3n Memourno ryI teagwary arcade sipa u L IMPLEMENTATION OPTIONS: THE SOIL QUALITY DESIGN GUIDELINES LISTED ABOVE CAN BE MET BY USING ONE OF THE $ vested ammy. METHODS LISTED BELOW: Eir All/ 1. LEAVE UNDISTURBED NATIVE VEGETATION AND SOIL, AND PROTECT FROM COMPACTION DURING CONSTRUCTION. Ykmd lrmra 2. AMEND EXISTING SITETOPSOIL OR SUBSOIL EUKERAT DEFAULT'PRE-APPROVED' RATES, ORATCUSTOM CALCULATED RATES BASED ON TESTS OFTHE BOILAND AMENDMENT. g B +Q sawmq Mlalm 1 rawtlm#to teotnnlc-' / j 3, STOCKPILE EXISTINGTOPSOIL DURING GRADING,AND REPLACE R PRIORTO PLATING. STOCKPILED TOPSOILMUST ALSO SEAMENDED IF NEEDEDTO MEETTHE ORGANIC MATTER OR DEPTH REQUIREMENTS, EITHERATADEFAULT-PRE- 11(co , peimma v4M N.v stares 3 q APPROVED' RATE ORATACUSTOM CALCULATED RATE. 4, IMPOTTOPSOIL MIX OF SUFFICIENT ORGANIC CONTENTAND DEPTH TO MEETTHE REQUIREMENTS. Varied; `,) MORE THAN _ LL 16ma ONE METHOD MAY BE USED ON DIFFERENT PORTIONS OF THE SAME SITE. SOILTHATALREADV MEETS THE Painstaking l�. n?-} ]S, DEPTH AND ORGANIC MATTER QUALITY STANDARDS, AND IS NOT COMPACTED, DOES NOT NEED TO BE AMENDED. .� `-Lsc?hP-1 a+. �j' .'��• N `. 15'rtfnr �— 1 Ort-rssv.stap MAINTENANCE ESTABLISH SOIL QUALITY AND DEPTH TOWARD THE END OF CONSTRUCTION AND ONCE ESTABLISHED, PROTECT FROM C `C_ �vaw:rwarrenLae ,` - +P' meet s MBVwrennrxs of>M lrnwmnwmrt.-We COMPACTION, SUCH AS FROM LARGE MACHINERY USE,AND ROM EROSION. - PLANT VEGETATION AND MULCH THEAMENDED SOILAREAAFTER INSTALLATION. SeeionB$ 11q PNmtl almg siape '` (dr AdTamaL Nth cmtoui "I shop pemniy; 40ovy - LEAVE PLATOEBRIS OR ITS EQUIVALETONTHE SOILSURFACETO REPLENISH ORGANIC MATTER pg �ygc - REDUCE AND ADJUST, MERE POSSIBLE, THE USE OF IRRIGATION, FERTILRERS, HERBICIDES AND PESTICIDES, RATHER N } Irv->m tl- arlar 9r PIOn ' .. ,'- 2 t. �wm�nle:l aPrwiOelulw:iEh THAN CONTINUING TO IMPLEMEFORMERLY ESTABLISHED PRACTICES. IMPLEMENT N Or; C wmarne 1 �`� i!/ �ry the eimince he efugreasMgns Qa,r�semalrwrox wen Q C ` Type "Above Grade" with wood Planks NOT TfI SCALE ki �I' I �. '`.� / .V""� ffia" ffma" rid. O Z m 0) .C. �W — s ,+ R X n �/ W 00 . m Figure II 4.1.7a ,., Figure If-4.1.1 o Concrete Washout Area r11� Stabilized Construction Entrance m a a DEPARTMENT OF Revised Jufa2015 -`d�n9s j DEPARTMENT OF. ResieeL June 3Bi5 a ECOLOGY °�°`� s.d:nanagaaonar. jECOLOGY Pmaea:mpaa�.«y.ago�,yN_AnR�yaLa�gpenumiaa. pyrgwt haM1'tpr� rtght:�ffiin :g DOineaiore. Stale �SMm of Washington aruda• mbvai And dunduarabi r�M�mMalt tfMmLS. Q Q BMP C130: SURFACE ROUGHENING STORM DRAIN INLET PROTECTION 140.20"00 Purpose: Sums roughening sift in the establishment of vgeMtee cover, reduces runoff velocity, increases lefiltraton, and provides forsetllment S ETHEBELOWINLETGRATEDEVICE(BIGD) FOR THE STORM WATER STRUCTURE IT WILL SERVICE B Q BMP C233: SILT FENCE p 04 (� N aN mapping through Me provision of a rough soil surtem. Horizontal depressant areueated by operating a tigeroroUersuiMble equipment an the mg,muring,uror by es in roughened condition by not fine grading them. Use lhk BMP in mnjunctlon wi0t other BMPs sucM1 3•-S fYS-'''-0nFn) THE BIGD SHALLHAVEABUILT IN HIGH -FLOW RELIEF SYSTEM (OVERFLOW BYPASS), PURPOSE N N 0 00 as seeding, mukhin orsotltlin oring soddin 3THE RETFIEVALSVSTEM MUSTALLOW USE OFASILT FENCE REDUCES THE TRANSPORT OF COARSE SEDIMENT FROMA CONSTRUCTION SITE BYPROVIDINGA Z LL 9' S' g . Y ` REMOVAL OPTING BIGD WITHOUT SPILLINGTHE COLLECTED MATERNL. NTT FENCEREDUCING THE VELOCITIES OF OVERLAND FLOW BEE FIGURE TEMPORARY BARRIERTO DUALS IH2.t251LT FENCE(P.369)FOR DETAILS ON SILT FENCE CONSTRUC110N. CONSTRUCTION. _ Q (3i 111 CONDITIONS OF USE: C -Allslopes steeper than 3H1V and Nan SveNcal feet require surface to depth to •\ V-10•Ola. F_ / 4. PERFORM MAINTENANCE IN ACCORDANCE WITH STANDARD SPECIFICATION MI.3(15). OPP < greeter roughening of21o4Inches Ddor seeding. A VWL25Unn) "�'1 CONDITIONS OF USE Z LU -Areas that will not be stabilized immediately may he roughened to reduce runoff velocity unN seeding takes place. -Shipss"amsbblemM faceed notrequireroughening. % 7 •` l \ , SILT FENCE MAY BE USED DOWNSLOPE OF ALL DISTURBED AREAS. LJJ W -Slopes wfiere mowing is planned shouts not be excessively roughened. Liter BMYB SILT FENCE SHALL PREVENT SOIL CARRIED BY RUNOFF WATER FROM GOING BENEATH, THROUGH, OR OVER THE TOP OF THE SILT FENCE, BUT SHALL ALLOW THE WATER V Q TO PASS THROUGH THE FENCE SILT FENCE IS NOT INTENDED TO TREAT CONCENTRATED FLOWS, NOR IS IT INTENDED TO TREAT SUBSTANTIAL AMOUNTS J Q OF OVERLAND FLOW. CONVEVANY CONCENTRATED FLOWS THROUGH THE DRAINAGE SYSTEM SEDIMENT U LU Z VJ,`. 1•s 1'mare w '- TO A POND. 00 NOT CONSTRUCTSILT FENCES IN STREAMS OR USE IN VSHAPEO DITCHES. SILT FENCES DO NOT PROVIDEAN N ' -•°^'" "^" MAP A ADEQUATEMETHOD OF SILT CONTROL FORANYTHING DEEPER THAN SHEET OR OVERLAND FLOW Y LL v O U Paige.A 1. Sirrw rotl e�etatapn requ4os to Mammerd any segue slating r ri Ne roAma4enm. 3' alTS125na IxeP. tluommNnur / ' O Q �c "Pam6�a� Ravill muM n2Matlp+�b wtuMra resridrot NOT TO SCALE �l O LL d '^ v, M Q `Ps'A a.sPa R o \ — Figure I1 4.2.14 --- —1l ' .rave w erwr ` .wn.. wpm ���"� n x' r°)i 4aa_ WattlesUse, egvva mlaw ClfaMd opo tl i ex�c a DEPARTMENT OF Request Nveamber WIS �'• 21rP try l4 Ga. wseacpsebnt Bstrmaryeurwgtn fabi aieq a e ECOLOGY Py�aee m� wBry. �g�a,Ma anaPy.natn..m�yPwm�aa. �6 slate of Washingtonei RaBaean orBadRy.am eadMlMr. Tracking uilhmaci inery upd�� \\`•�= j POP Matt of BMP C123: PLASTIC COVERING' B sued, \\\\\ �6 PURPOSE: a -BYE sal ra-ntNL arH reduCa namt \\�a G.��a a PLASTIC COVERING PROVIDES IMMEDIATE,SHORT-TERM EROSION PROTECTION TO SLOPES AND DISTURBED AREAS. 5 a�BsE " p' "o€ Tracking CONDITIONS OF USE: PLASTIC COVERING MAYBE USED ON DISTURBEDAREASTRAT REQUIRE COVER MEASURES FOR LESS THAN 30 DAYS, {`,{ `•� `2 ` /�a'� IyMo9 EXCEP AS STATED BELOW.-- ______'Im _-_____ __r W Eam mg PLASTIC IS PARTICULARLY USEFUL FOR PROTECTING CUTAND FILLSLOPES AND STOCKPILES. NOTE: THE RELATIVELY ID BREAKDOWNOF AT MOST POLYETHYLENE SHEETING MAKES IT UNSUITABLE FOR LONG-TERM(GREER THAN SIX kadmun I —� ',ES`a MO gyYy A -DUE TO RAPID RUNOFF CAUSED BY PLASTIC COVERING, DO NOT USETHIS METHOD UPSLOPE OFAREAS THAT MIGHT BE u� Uj „o.IE[ ADVERSELVIMPACIED BY CONCENTRATED RUNOFF. SUCH AREAS INCLUDE STEEPANC/OR UNSTABLE SLOPES. NREASES,,CCREATINGATOROUGHWFHWAT Posts ps®g may ON aroxage ¢ueea 3 t'0 MEASURESTOCOU TERACNG TTHEINCULTIN MOROTH RNMATERNLCANCO VIEY m8'/wtre oadrig fenx pots, craryiNe'zrc � CLEAN WATERAWAY FROM THESEAREAS. ^'"'TX01°ssawre g1 --wsruaalerararmr gzSG -TO PREVENT UNDERCUITING,TRENCHAND BACKFILL ROLLED PLASTIC COVERING PRODUCTS. -WHILE PLASTIC IS INEM'ENSIVETO PURCHASETHEADDED COST OF INSTALLATION, MAINTENANCE, REMOVAL AND DISPOSALMAKETHISANEXPENSIVEMATERIAL, UPTO$1S 00 PER SQUAREVARD.-WHE S,CHANNELS, CD ON URESATTHE THESE MEASURES TER SLOPE. THESEMEASURESINCLUDEPLASTIGCOVERED BERMS,CHANNELS,AND BERMS, /�'` ` dsMr�rd arrmgrh tebk uses \ G WOF PIPES USED TO PIPER USED TO COVEY CLEAN RAINWATER AWAY'1„a"s LEAN RAINWATER Q - W081H -` I (1Egmi 1f5trrn) FROM BARE SOIL AND DISTURBED AREAS. DO NOT MIX CLEAN RUNOFF FROM A PLASTIC COVERED SLOPE WITH DIRTY RUNOFF ROM APROJECT. \ rf9 �.,. /�/ rmm ��oBI 999 3 QContour Furrows /`�t�M N .aar— i is.ra2min. OWNER APPROVAL cmcnes ma pltlr xel ru r. I,r1 ` MOsnwn Y^ �• mtdrr. Aortae, and tleaease o noti. aloe g14-trenCt INITIAL TQ SCALE N.,Fe a urm�p IIOLRIIeaFY �I !%/ kill !W eermulswamr r�•vmod Posts.steelJ PAGE#: knee imsB. aeyn)2krrt NOT TGSCALE Figure 11-4.1 .5 =�= Surface Roughening by Tracking LMLwr PRU lOnoM Figure II-4.2.12 �. and Contour Furrows SrAMD N D PL.Ma4oxm Silt Fence PAGE: DEPARTMENT OF RsrsiBM9 Jury 2615 DEPARTMENT OF Resuetl Ociobmer2gt4 ECOLOGY PrBdfiap xJM OF]IW' RIPPE ECOLOGY I� PeazBax mylAs«TY-«y.wa.9evkoPYdP'BAmM br copYritJM nwcenwd gpBmlLBBrorc. State of Washington FnitaBonal labTLy. andrNtltbp.^'_ a PM�xaeehyLlyaw acy.»a9o'+toPrrK%elmrNtur mpyryM ragm lmi�ing permissiaa. - ., -- Srare of W4511109tan limits+ naN fiaako. and Ns r.