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Home My WebLink AboutBLD-2026-0336 - ACCESSORY DWELLING UNIT/ADUFIXTURES Qty Mechanical Fixtures 1 Air Conditioner / Handler 1 Range Hood 1 Refrigeration Unit 1 Stove/Range/Oven 1 Heat Pump 1 Stackable Washer Dryer 1 Tankless Water Heater 2 Wall Heater Qty Plumbing Fixtures PARCEL: P33069 LEGAL DESCRIPTION: (0.2000 ac) TAX 32AAA E 60FT OF FOL TR BAAP 520.5FT E & 417.4FT N OF SW C GOVERNMENT LOT 2, SECTION 30, TOWNSHIP 35 NORTH, RANGE 2 EAST, W.M., TH E 482.3FT TH S 100FT TH W 482.3FT TH N 100FT TPB LESS E 60FT & TAX 32AAB APPLICANT: Parkins, Kristin 812 37TH ST Anacortes, WA 98221 4153108312 OWNER: PARKINS JUSTIN PARKINS KRISTIN ANACORTES, WA 98221 VALUATIONS: Heated Living Space 892.00 $152,353.60 $152,353.60Total: FEES:Paid Due State Building Code Council fee $6.50 $0.00 Building Permit Fee $1,290.55 $0.00 Plan Review Fee $838.86 $0.00 Storm Water Review Sq Ft $71.36 $0.00 Mechanical and plumbing remodel fixtures fees $166.70 $0.00 $0.00Totals : CONSTRUCTION CONTRACTOR:NORTH COAST DESIGN LLC 6410 spradley rd ANACORTES, WA 98221 425-356-7705 License: NORTHCD809O9 Expires: 09/09/2027 $2,373.97 BLD-2026-0336 ACCESSORY DWELLING UNIT/ADU ISSUED: EXPIRES: 08/17/2026 08/17/2027 PROJECT NAME: 808 COTTAGE SITE ADDRESS: 808 37TH STREET ANACORTES Page 1 of 2Printed by : Jennifer Watson on: 08/28/2026 09:08 AM City of Anacortes, WA 904 6th Street Anacortes, WA 98221 (360) 293-1901 http://cityofanacortes.org/ Please request inspections online through the permit portal. If that is not possible please call (360) 293-1901 for Building or Planning inspections. For Public Works inspections, please call (360) 293-1938. REQUIRED INSPECTIONS Initial BMP's. This stormwater inspection must be completed prior to any other inspections. Sewer Line Storm Drain Connection Footings Perimeter Drains STORMWATER BMPS 1ST MID PROJECT INSPECTION Foundation Underfloor Underground Plumbing Underslab Mechanical Rough-In Gas Piping Plumbing Rough-In Shear Wall and Nailing Framing STORMWATER BMPS 2ND MID PROJECT INSPECTION Insulation Fenestration U-Factors Drywall or Lath Roofing Final Permeable Soil Depth Public Works Final Building Final Stormwater Final Page 2 of 2Printed by : Jennifer Watson on: 08/28/2026 09:08 AM City of Anacortes, WA ACCESSORY DWELLING UNIT/ADU BLD-2026-0336 Planning, Community, & Economic Development Department 904 6th St, Anacortes, WA 98221 pced@anacorteswa.gov (360) 293-1901 *The applicant is responsible for compliance with all codes and regulations, whether or not described in this document* Permitting Application Requirements and Checklists Submittal Standards – Page 32 4.7 Stormwater Documentation 4.7.1 Stormwater Self-Assessment Answer the following questions to determine the stormwater requirements that apply to your project. Question Response Unit 1. What is the parcel size of the site to be developed? Square Feet 2. What is the total area of already existing hard surfaces? Square Feet 3. What is the total land area that will be disturbed during this project? Square Feet 4. What is the total area of new hard surfaces? Square Feet 5. What is the total area of to-be replaced hard surfaces? Square Feet 6. How much vegetation will be converted to lawn/landscaped area? Square Feet 7. How much native vegetation will be converted to pasture? Square Feet 8. Does the site have 35% or less of existing hard surface coverage? ☐ YES: This project is considered a “new development.” ☐ NO: This project is considered a “re-development.” Answer the questions below based on whether your project is a New Development or Re-Development. NEW DEVELOPMENT RE-DEVELOPMENT N1. Does the project result in 5,000 sq.ft. or greater of new and replaced hard surface? R1. Does the project add 5,000 sq. ft. or more of new hard surfaces? OR Convert 32,670 sq. ft. (3⁄4 acre) or more of vegetation to lawn or landscaped area? OR disturb greater than 1 acre of land? OR Convert 2.5 acres or more of native vegetation to pasture? ☐ YES Large Project Stormwater Plan [see next page] ☐ NO Proceed to question N2 N2. Does the project convert 3⁄4 acre (32,670 sq.ft.) or more of vegetation to lawn or landscaped area, or convert 2.5 acres or more of native vegetation to pasture? ☐ YES Large Project Stormwater Plan [see next page] ☐ NO Proceed to question R2 ☐ YES Large Project Stormwater Plan [see next page] ☐ NO Proceed to question N3 R2. Does this project result in 2,000 sq. ft., or more, of new plus replaced hard surface area? OR is the land disturbing activity greater than 7,000 sq. ft. but less than 1 acre? N3. Does the project result in 2,000 sq.ft. or greater of new plus replaced hard surface area? ☐ YES Proceed to question R3 ☐ NO Minimum Requirement 2 Only [see next page] ☐ YES Small Project Stormwater Plan [see next page] ☐ NO Proceed to question N4 R3. Is the total of new plus replaced hard surfaces 5,000 sq. ft. or more, AND does the value of the proposed improvements – including interior improvements – exceed 50% of the assessed value (or replaced value) of the existing site improvements? N4. Does the project have land disturbing activities greater than 7,000 sq.ft. but less than an acre? ☐ YES Small Project Stormwater Plan [see next page] ☐ NO Minimum Requirement 2 Only [see next page] ☐ YES Large Project Stormwater Plan [see next page] ☐ NO Small Project Stormwater Plan [see next page] Upon completion of the stormwater questionnaire, use Table 1 and Table 2 to determine the required stormwater management practices, and provide the appropriate materials with submission of your completed building permit application. 677827945765760800x x x x Kristin & Justin Parkins 808 37th StAnacortes Planning, Community, & Economic Development Department 904 6th St, Anacortes, WA 98221 pced@anacorteswa.gov (360) 293-1901 *The applicant is responsible for compliance with all codes and regulations, whether or not described in this document* Permitting Application Requirements and Checklists Submittal Standards – Page 33 Please indicate the level of Stormwater Management your project is required to meet: ☐ MR #2 Only ☐ Small Project (MR #1-5) ☐ Large Project (MR #1-9) ☐ Exempt Table 1: Washington State Department of Ecology Minimum Requirements (MR) MR #1: Preparations of stormwater site plans MR #2: Construction Stormwater Pollution Prevention Plan (SWPPP) MR #3: Source control of pollution MR #4: Preservation of natural drainage systems and outfalls MR #5: On-site stormwater management MR #6: Runoff treatment MR #7: Flow control MR #8: Wetlands protection MR #9: Operation and maintenance Table 2: Stormwater Management Information Requirement Description Required MR #2 Only A complete Construction SWPPP does not need to be prepared and submitted to meet this requirement. However, the project proponent must consider all 13 Elements of Construction Stormwater Pollution Prevention and develop controls for all elements of the project. Additional Resources USSG 6.05.03 SWMMWW Vol.1-2.5.5 Small Project Stormwater Plan (MR #1-5) Small projects are required to meet Minimum Requirements #1-5. These projects are generally less impactful and therefore require less stormwater protection and mitigation eff orts. These projects have the option to use the City’s pre-engineered worksheets, templates, and forms to construct an a Small Stormwater Management Plan. Additional Resources USSG 5.04.01.1 SWMMWW Vol.1-Ch.2 Large Project Stormwater Plan (MR #1-9) Large projects are required to meet all Minimum Requirements (#1-9). These projects are either impactful by design or are being developed in an environmentally sensitive and/or critical area. The project proponent is required to retain professional engineering services to prepare and submit a detailed report that addresses site specific stormwater concerns and engineered solutions that meet WA State specifications. Contact a Licensed Engineering Firm Additional Resources USSG 5.04.01.2 SWMMWW Vol.1-Ch.2 Demolition Applicant should at least meet Minimum Requirement #2 and follow the Department of Ecology BMPs for demolition Projects in an Existing Platted Development If the project is in a recorded plat, the applicant should review the plat language and the original drainage report to check for any restrictions on building square footage. This review should also extend to water, sewer, and easement documentation Links to resource documents below. • SWMMWW: WA State Dept. of Ecology’s Stormwater Management Manual for Western Washington, 2024 x Planning, Community, & Economic Development Department 904 6th St, Anacortes, WA 98221 pced@anacorteswa.gov (360) 293-1901 *The applicant is responsible for compliance with all codes and regulations, whether or not described in this document* Permitting Application Requirements and Checklists Submittal Standards – Page 34 4.7.2 Stormwater Prevention Plan Minimum Requirements Please refer to the following link: https://www.anacorteswa.gov/DocumentCenter/View/24761/Stormwater-Drainage-Report-Minimum- Requirements-2--04-23-2024 4.7.3 Stormwater Management Activity Report (Required to be provided during project construction) Required Elements ☐ 1. Runoff Calculations ☐ 2. Documentation of compliance with the Stormwater Management Manual for Western Washington ☐ 3. Upstream and Downstream Analysis ☐ 4. Maintenance Plan for proposed and existing drainage facilities ☐ 5. Feasibility Analysis for Low Impact Development (LID) ☐ 6. Soil Analysis Report with wet and dry season testing DRAWN BY: BRUCE RUSTAD EXISTING & PROPOSED SITE PLAN DATE: 04/18/26 SCALE: 1" =20'-0" ON 11" x 17" PAPERSCALE: 1" =10'-0" ON 22" x 34" PAPER NOTES: 1. DURING CONSTRUCTION, THE RUN OFF WILL BE CONTROLLED WITH ADJACENT PROPERTY.SILT FENCES AND SHALLOW SWALES TO PROTECT THE PROTECTOR INSTALLED PER WSDOT DETAIL 1-40.20-002. THE STREET STORM WATER CATCH BASIN WILL HAVE A STORM DRAIN INLET 3. STREET AND DITCHES WILL BE CLEANED DAILY OF ERISION RUN-OFF IF ANY. 4. BEFORE CONSTRUCTION BEGINS, A SITE WALK WILL TAKEPLACE TO IDENTIFY THE CONDITION OF THE STREET, CURB & GUTTER.ALL BROKEN AREAS WILL BE REPLACED TO THE CITY'S APPROVALPRIOR TO THE ISSUANCE OF THE CERTIFICATE OF OCCUPANCY. PARCEL #: P33069 & P56650 ADDRESS: 808 37th STREET JUSTIN PARKINS ADU Xrefld: 350230-0-078-0008PLUMBING TO COMPLY WITH THE IRC 2021 BUILDING CODES 2021 UNIFORM PLUMBING CODE BUILDING TO COMPLY WITH THE 2021 WASAHINGTON STATE ENERGY CODE CONSTRUCTION NEEDS TO COMPLY WITHBUILDER TO VERIFY ALL DIMENSIONS 7,066 SQ. FT. 25.9% PERCENT OF COVERAGE LOT AREA (BOTH LOTS)HOUSE PERCENT OF COVERAGE EXISTING EXISTING IMPERVIOUS AREA PERCENT OF IMPERVIOUS 56% DRIVEWAY & SIDEWALKS 5. TIE-INTO CITY WATER & SANITARY SEWER. DRAWING INDEX: 1. PROPOSED SITE PLAN2. EXISTING & NEW ELEVATIONS 4. EXISTING & NEW FOUNDATION PLAN 5. EXISTING & NEW ROOF PLAN6. SECTIONAL DETAILS 3. EXISTING & NEW FLOOR PLANS 1 1 of 7 ZONED R-3 LOT AREA TOTAL IMPERVIOUS 3,964 SQ. FT. 7. EXCESS CONCRETE TO BE REMOVED 1,238 SQ. FT. 37TH STREET 11 8 . 0 0 ' N 0 d 0 3 ' 3 1 " E 11 8 . 0 0 ' N 0 d 0 3 ' 3 1 " E 59.99'N 89d 56' 34" E 59.99'N 89d 56' 34" E VACATED ALLEY SEWER EXISTING SITE PLAN EXISTING HOUSE EXISTING GARAGE CO N C R E T E S I D E W A L K PO R C H WOODEN FENCE CO N C R E T E S I D E W A L K TREE BUSH BUSH BUSH TREE 7.6' 3.8' 12./7' REMOVE THISPORTION REMODEL THISPORTION GRASS GRAVEL GRASS GRASS 37TH STREET 11 8 . 0 0 ' N 0 d 0 3 ' 3 1 " E 11 8 . 0 0 ' N 0 d 0 3 ' 3 1 " E 59.99'N 89d 56' 34" E 59.99'N 89d 56' 34" E SEWER CITY WATER PROPOSED SITE PLAN EXISTING HOUSE CO N C R E T E S I D E W A L K CO N C R E T E S I D E W A L K TREE BUSH BUSH BUSH TREE 3.8' GRASS GRASS GRASS EXISTING GARAGEREMODELED INTO AN ADU PERCENT OF COVERAGE PERCENT OF COVERAGE NEW GARAGE 600 SQ. FT.TOTAL 1,838 SQ. FT. 892 SQ. FT.ADUTOTAL 2,130 SQ. FT. 30% HOUSE GARAGE 1216 SQ. FT. NEW IMPERVIOUS AREA PERCENT OF IMPERVIOUS 49 % DRIVEWAY & SIDEWALKS LOT AREA TOTAL IMPERVIOUS 3,473 SQ. FT. HOUSE 892 SQ. FT.ADU PATIO 127 SQ. FT. 5.79' 10.71' 25.6' 4.6' 20' DOWNSPOUT DOWNSPOUT DOWNSPOUT DOWNSPOUT DOWNSPOUT 7. BRACE WALL PLAN 25.6' 20' EXISTING DOWNSPOUTEXISTING DOWNSPOUTEXISTING 4" SOLID PVCNEW TO INTO EXISTINGDRAINAGE SYSTEM 4" SOLID PVCEXISTING DOWNSPOUTNEW DOWNSPOUTNEW BMP C233SILT FENCE BMP C233SILT FENCEBMP C233SILT FENCE 9' x 14'PATIO CO N C R E T E B O R D E R 6x6 BORDER TREE TREE GRAVEL GRAVEL GR A V E L GRASS FL O W E R B E D CITY WATERNEW 6x6 BORDER TREE TREE FL O W E R B E D REV. #1 05/13/26 P33069 P56650 7,066 SQ. FT.LOT AREA (BOTH LOTS)HOUSE 1,238 SQ. FT. GRAVEL AREA 910 SQ. FT. 600 SQ. FT.1,238 SQ. FT.7,066 SQ. FT. 7,066 SQ. FT.1,238 SQ. FT. 1,216 SQ. FT. 600 SQ, FT. 1238 SQ, FT. (ORINANCE NO.475)(ORINANCE NO.475)VACATED ALLEY 127 SQ, FT. Legal Description P33069: TAX 32AAA E 60 ft OF FOL TR BAAP 520 ft. E & 4127 FT. N OF SW C GOVERNMENT LOT 2, SECTION 30. TOWNSHIP 35NORTH, RANGE 2 EAST, W.M. TH E 482.3 FT TH S 100 FT. TH W 482.3 FT TH N 100 FT TPB LESS E 60 FT. & TAX 32AAB. Legal Description P56650: FRACTIONAL LOTS 17 AND 18. BLOCK 12, BEALE'S MAPLE GROVE ADDITION TO THE CITY OF ANACORTES, ACCORDING TOPLAT THERE OF RECORDED IN VOLUMN 2 OF PLATS. PAGE 19, RECORDS OF SKAGIT COUNTY, WASHINGTON. TGW S1/2 OF VAC ALLEY NOTE: Lots will be merged byconstruction. Staff encouragesthe property owner to combinethe two parcels with SkagitCounty in order to have onetax parcel in the future. CO N C R E T E D R I V E W A Y GRAVEL GRAVELGRAVELGRAVEL CITY WATER THREE OFF STREET PARKING TWO ON STREET PARKING THREE OFF STREET PARKING TWO ON STREET PARKING CITY WATEREXISTING SEWEREXISTING SEWERNEW EXISTING DRAINAGEDOWNSPOUTEXISTING 6. TIE-INTO EXISTING DOWNSPOUT DRAINAGE 26% 7/9/2026 WSU Code Compliance Calculator, WSEC 2021 Project Information Messages / Comments * 0 Note: Review of Baseline Required - Review required for custom entries: - Doors- Floors- Below Grade Wall UA Reduction = -79.98 is negative compared to user-defined baseline UA. Check required % reduction compared to Addition's UA. Contact Information - Whole House Mechanical Ventilation Airflow Rate: 43.75 CFM with Run Time Percent of 100%, Balanced, Not Distributed ANALYSIS SET UP What code compliance pathway are you using? Project Building Type? Occupancy Type? Code Version? Classification:Small Dwelling Unit -- 892 sq. ft. Baseline Description: Existing Baseline - Maximum baseline window area is 15% of floor area per Option 1 UA % reduction calculation (Section R402.1.5). About Your Selection:No exempt window or door areas. Enter baseline design details to right of proposed design below - RESULTS - Comparison of Baseline and Proposed Design ** Component Performance, R occupancies U *Area UA Area UA Doors U =0.300 20 6.0 69 19.4 Overhead Glazing U =0.000 0 0.0 0 0.0 Vertical Glazing U =0.300 160 48.0 67 14.6 Flat/Vaulted Ceilings U =0.020 491 9.8 1,578 39.5 Wall (above grade) U =0.056 1,134 63.5 1,453 61.0 Floors over Crawlspace U =0.000 0 0.0 1,578 71.0 Slab on Grade F =0.540 139 75.1 136 35.5 Below Grade Wall U =0.000 0 0.0 Below Grade Slab F =0.000 0 0.0 136 41.3 0.30 =eff F of below grade wall and slab * Values from user-defined baseline Baseline UA Total 202.4 Proposed UA Total 282.4 Required Credits 0 Proposed Credits 5.0 UA Percent Reduction Calculate %UA reduction based on Addition UA UA Reduction -80.0 ** Results assume your inputs are complete and correct. Results do not constitute an approval. Analysis should be reviewed by your AHJ. Total Credits (406.2 & 406.3) 5.0 * Results assume your inputs are complete and correct. Results do not constitute an approval. Analysis should be reviewed by your AHJ. 0.0 0.0 Efficient Building Envelope 3.1 -3.10 1 3.11 4 High Efficiency HVAC: Smart Thermostat 0.0 High Efficiency HVAC Distribution System 0.220 0.025 0.042 0.045 0.261 0.304 Proposed Design User-Defined Baseline (Addition/Remodel/Alteration of Existing) U Baseline Design Addition / Remodel / Alteration R3 Single family dwellings and townhouses WSEC 2021 0.279 3.0 Full Description For heating system based on electric resistance with (1) inverter driven ductless mini- split heat pump system installed in the largest zone in the dwelling OR (2) With 2kW or less total installed heating capacity per dwelling High Efficiency HVAC Not Selected System No. 5 1.0 Brief Description of Selected Options* 1.0 Category Select System Type Energy Credits Option 2.1 Fuel Normalization Credits (406.2) Table R406.2 Energy Equalization Credits 2.0 Electric Resistance with Ductless Heat Pump OR electric resistance with max 2 kW installed capacity Table R406.3 Energy Credits Energy Credits (406.3) Select Options Option 1.2 Perscriptive compliance per Table 402.1.3 / U-0.25 vertical fenestration / R-38 floors or R-10 perimeter & fully insulated slab. Or 15% reduction in UA per section R402.1.5 Per Section R402.4.1.2 / 2.0 ACH50 / For R-2, 0.25 cfm per ft2 at 50 Pa. / HRV with min SHR eff of 0.65 per IRC Section M1505.3 or IMC Section 403.8 Option No. 2 Air Leakage Control and Efficient Ventilation WSU_C32021_20241009~Mamor Lot 6.xlsm, Version:10/9/2024 4:07:13 PM 10/16/2024 1 WSU Code Compliance Calculator, WSEC 2021 Renewable Electric Energy 3,000 kWh Energy Credits *Refer to WSEC 2021 Table R406.3 for complete option descriptions and requirements 0.0 Energy star gas or propane water heater with min UEF of 0.91 OR Solar supplemental water heating OR GSHP meeting requirements of Option 3.4 0.0 3.0 7 Appliance Package https://sbcc.wa.gov/state-codes-regulations-guidelines/state-building-code/energy-code 6 1.0 Efficient Water Heating: Drain Heat Recovery Efficient Water Heating Efficient Water Heating: Compact Hot Water Distribution 5.1 5.3-5.8 5.2 Option 5.4 0.0 0.0 WSU_C32021_20241009~Mamor Lot 6.xlsm, Version:10/9/2024 4:07:13 PM 10/16/2024 2 WSU Code Compliance Calculator, WSEC 2021 THERMAL ENVELOPE DETAILS - Proposed Design Conditioned Floor Area, Proposed Design 892 sq. ft Classification Small Dwelling Unit Exterior Doors Plan Component Door ID Description Ref.U Qt.Feet Inch Feet Inch Area UA pg 3, E front doorCode Baseline, U=0.30 - 0.30 1 3 2 6 10 22 6.5 pg 3, E patio doorFrench/Glass Door Custom 0.27 1 7 0 6 10 48 12.9 Refer to WSEC R402.1.5 U-factor Reference and Calculations 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Sum of Area and UA 69 19.4 0 1 Exterior Doors Area Weighted U 0.279 Overhead Glazing Plan Component Glazing ID Description U Feet Inch Feet Inch - - - - - 0.0 0 0 0 Overhead Glazing Area Weighted U Vertical Glazing Schedule Rows to Show 16 Plan Component Glazing ID Description U Feet Inch Feet Inch 1 pg 3, A U=0.22 (2021 1.1; 2018 1.5)Table 406.2 / 406.3 0.22 2 4 0 4 0 32.0 7.04 2 pg 3, B U=0.22 (2021 1.1; 2018 1.5)Table 406.2 / 406.3 0.22 2 1 3 5 0 12.5 2.75 3 pg 3, C U=0.22 (2021 1.1; 2018 1.5)Table 406.2 / 406.3 0.22 1 3 6 3 0 10.5 2.31 4 pg 3, D U=0.22 (2021 1.1; 2018 1.5)Table 406.2 / 406.3 0.22 1 3 0 3 0 9.0 1.98 5 pg 3, E U=0.22 (2021 1.1; 2018 1.5)Table 406.2 / 406.3 0.22 1 2 6 1 0 2.5 0.55 6 - - 7 - - 8 - - 9 - - 10 - - 11 - - 12 - - 13 - - 14 - - 15 - - 16 - - Sum of Area and UA 66.5 14.6 0 Vertical Glazing Area Weighted U 0.220 Vertical Glazing and Doors Area Weighted U 0.250 Flat/Vaulted Ceilings Plan Component Attic ID Description U Flat R60 blown Attic STD baffled 10-7 0.025 1,578 39.5 1,578 39.5 0 Area Weighted U-Value 0.025 Walls (Above Grade) Plan Component Wall ID Description Ref.U UA Width Ref. Ref. Height Notes Height Area Width Qt. Sum of Area and UA Qt.UAArea HeightWidth Sum of Area and UA Ref. Net Area Area UA UA WSU_C32021_20241009~Mamor Lot 6.xlsm, Version:10/9/2024 4:07:13 PM 10/16/2024 3 WSU Code Compliance Calculator, WSEC 2021 All walls and ceilingR21 cavity+R5 foam INT 2X6W T111 10-5 0.042 1,453 61 1,453 61 0 Gross Wall Area 1,589 ft2 Area Weighted U-Value 0.042 Sum of Net Area and UA WSU_C32021_20241009~Mamor Lot 6.xlsm, Version:10/9/2024 4:07:13 PM 10/16/2024 4 WSU Code Compliance Calculator, WSEC 2021 Floor (over crawl or exterior) Plan Component Floor UA ID Description Ref.U pg 6 R20 Concrete Exposed Custom 0.045 1,578 71 Refer to WSEC R402.1.5 U-factor Reference and Calculations 1,578 71 1 Area Weighted U-Value 0.045 Slab on Grade (less than 2 feet below grade) Plan Component Slab ID Description Ref.F FP pg 6 R20 Fully insulated (2018 1.6)Table A6.3, ASHRAE 90.10.261 136 35 136 35 0 Area Weighted U-Value 0.261 Below Grade Walls and Slabs Plan Component Slab Wall Wall Wall Slab ID Description Depth Ref.U Area UA FP pg 6 22- R20 Foam Ext w/TB 7' depth Custom 0.034 0 0.0 136 41 Refer to WSEC R402.1.5 U-factor Reference and Calculations Sum of Area, Length and UA 0 0 136 41 1 Weighted U- and F-values 0.304 Effective F-value 0.30 Links to Download Forms, Checklists and Other Resources Compliance Certificate Instructions Insulation Certificate for Residential New Construction Duct Testing Affadavits Existing Construction New Construction Prescriptive Checklist for 2018 WSEC Alterations (Remodel) Worksheet EER SEER2 COP HSPF2 Converter https://www.adicotengineering.com/eer-seer2-cop-hspf2-kwton-converter Show Ventilation Requirements Conditioned Floor Area 892 sq. ft. Number of Bedrooms 2 Run-Time Percent in Each 4-Hour Segment 100% Is the system Balanced?Verify system meets definition of 'Balanced Whole-House Ventilation' Is the system Distributed? Ventilation Code Section IRC, Chapter 15 Whole House Mechanical Ventilation Airflow Rate 44 CFM Show HVAC Thermal Distribution System Download RS-33 (2018) Is this a hydronic heating system? Location of Ducts Location of Air Handler For Existing Construction: Are Any of These Exceptions True? No No - No Yes Is Duct Testing Required?No Maximum Duct Leakage: Yes Maximum total measured duct leakage per square foot 0.04 CFM25 per sq. ft. Maximum allowable total measured duct leakage 36 CFM25 http://www.energy.wsu.edu/Documents/Duct%20Testing%20Standards%20_2018%20WSEC.pdf Unducted Link Prescriptive Checklist Affidavit, Existing Affidavit, New Worksheet Is this a post-contruction test? No Sum of Perimeter and FP 0.304 Slab Slab Perim Is there less than 40 linear feet in unconditioned spaces? (not excepted under WSEC 2021) Are existing duct systems constructed, insulated or sealed with asbestos? Is the project an Addition less than 750 sf of conditioned floor area? Unducted Area Insulation Certificate Sum of Area and UA Not Distributed Are ducts systems documented to have been previously sealed as confirmed through field verification and diagnostic testing per RS-33? Balanced Show Distribution System Calculator? Show Ventilation Calculator? Compliance Certificate Slab Perim F WSU_C32021_20241009~Mamor Lot 6.xlsm, Version:10/9/2024 4:07:13 PM 10/16/2024 5 WSU Code Compliance Calculator, WSEC 2021 Show Heating System Sizing - Proposed Design Try Out BetterBuiltNW's HVAC Sizing Tool: Nearest Weather Station Indoor Design Temperature 70 F Outdoor Design Temperature 24 F Design Temperature Difference (∆T)46 F Conditioned Floor Area, Proposed Design 892 ft2 Conditioned Volume 7,000 ft3 Average ceiling height =7.8 ft. Volume = 7000 ft3 0.00 Leave blank to use default of 8.5 ft. ceiling height Average ceiling height 7.8 ft HVAC System Type Location of HVAC Distribution System Unducted Sum of UA 282 Envelope Heat Load 12,989 Btu / Hour Sum of UA X ∆T Air Leakage Heat Load 3,478 Btu / Hour ((Volume X 0.6) X ∆T) X .018)) Building Design Heat Load 16,467 Btu / Hour Air Leakage + Envelope Heat Loss Building and Duct Heat Load 16,467 Btu / Hour For ducts located in unconditioned space: Sum of Building Heat Loss X 1.1 For ducts located in conditioned space or ductless: Sum of Building Heat Loss X 1 Maximum Heat Equipment Output 23,053 Btu / Hour Building and Duct Heat Loss X 1.25 for heat pumps 6.8 kW Building and Duct Heat Loss X 1.40 for all other systems https://betterbuiltnw.com/resources/hvac-sizing-tool Show Heating System Sizing? Heat Pump Anacortes WSU_C32021_20241009~Mamor Lot 6.xlsm, Version:10/9/2024 4:07:13 PM 10/16/2024 6 WSU Code Compliance Calculator, WSEC 2018 Project Information Messages / Results * 808 37th St Credit requirements are not met. Select energy credits from Tables 406.2 and 406.3 below ADU Review required for custom entries: - Doors UA Reduction = 33.28, Proposed UA is better than baseline by 17% Contact Information UA reduction meets percent target of selected Option 1 North Coast Design LLC - ANALYSIS SET UP What code compliance pathway are you using? Project Building Type? Occupancy Type? Code Version?WSEC-R Rev: Oct. 2023, https://www.sbcc.wa.gov/sites/default/files/2023-12/OTS-5010.1_post.pdf Classification:Small Dwelling Unit -- 892 sq. ft. Baseline Description: Code Baseline - Baseline and proposed window areas are equal. About Your Selection:Up to 15 sf exempt window and 24 sf exempt door allowable RESULTS - Comparison of Baseline and Proposed Design Component Performance, R occupancies U *Area UA Area UA Doors U =0.300 69 20.8 69 19.4 Overhead Glazing U =0.500 0 0.0 0 0.0 Vertical Glazing U =0.300 67 20.0 67 14.6 Flat/Vaulted Ceilings U =0.024 892 21.4 892 21.4 Wall (above grade) U =0.056 1,021 57.2 1,021 55.1 Floors over Crawlspace U =0.029 0 0.0 0 0.0 Slab on Grade F =0.540 136 73.4 136 49.0 Below Grade Wall U =N/A 0 0 0.0 Below Grade Slab F =N/A 0 0 0.0 * Values from Table R402.1.2 (Oct 2023) Baseline UA Total 192.8 Proposed UA Total 159.5 Required Credits 5.0 Proposed Credits 4.5 from Tables 406.2 and 406.3 UA Percent Reduction 17.3% UA Reduction 33.3 If the Proposed UA ≤ the Target UA, and the Proposed Credits from Table 406 are ≥ those required in Section R406, then the home meets the WSEC. Total Credits (406.2 & 406.3) 4.5 0.220 0.024 0.054 0.360 Proposed Design Table R406.3 UA Trade Off U Baseline New Construction R3 Single family homes and duplexes WSEC 2021 0.279 1.0 Brief Description of Selected Options* 1.0 Category Select System TypeSystem No. 2 Option 2.1 Fuel Normalization Credits (406.2) 1 3.0 Full Description For heating system using a heat pump that meets federal standards for the equipment listed in Table C403.3.2(2) and supplemental heating provided by electric resistance or a combustion furnace meeting minimum standards Listed in Table C403.3.2(5)b found in the 2021 WSEC - COMMERCIAL ENERGY CODE. High Efficiency HVAC Energy Credits 3.11 High Efficiency HVAC: Smart Thermostat 0.0 Table R406.2 Energy Equalization Credits 1.5Heat Pump with Supplemental Heating Select Options Option 1.2 Perscriptive compliance per Table 402.1.3 / U-0.25 vertical fenestration / R-38 floors or R-10 perimeter & fully insulated slab. Or 15% reduction in UA per section R402.1.5 Per Section R402.4.1.2 / 2.0 ACH50 / For R-2, 0.25 cfm per ft2 at 50 Pa. / HRV with min SHR eff of 0.65 per IRC Section M1505.3 or IMC Section 403.8 Table R406.3 Energy Credits Option No. 2 Air Leakage Control and Efficient Ventilation Efficient Building Envelope 3.1 -3.10 Energy Credits (406.3) * Results assume your inputs are complete and correct. Results do not constitute an approval. Analysis should be reviewed by your AHJ. 0.0 1/25/2024C:\Users\kylem\Desktop\C3 Calculator.xlsm 8/7/2026 WSU Code Compliance Calculator, WSEC 2018 Renewable Electric Energy kWh Energy Credits *Refer to WSEC 2015 Table R406.2 for complete option descriptions and requirements 4 Option 5.4 0.0 0.0 High Efficiency HVAC Distribution System 7 Appliance Package Efficient Water Heating: Drain Heat Recovery Efficient Water Heating Efficient Water Heating: Compact Hot Water Distribution 5.1 5.3-5.8 5.2 6 1.0 3.0 0.0 Energy star gas or propane water heater with min UEF of 0.91 OR Solar supplemental water heating OR GSHP meeting requirements of Option 3.4 0.0 0.0 1/25/2024C:\Users\kylem\Desktop\C3 Calculator.xlsm 8/7/2026 WSU Code Compliance Calculator, WSEC 2018 THERMAL ENVELOPE DETAILS - Proposed Design Conditioned Floor Area, Proposed Design 892 sq. ft Classification Small Dwelling Unit Exterior Doors Plan Component Door ID Description Ref. U Qt. Feet Inch Feet Inch Area UA Exempt 0 0.0 French/Glass Door Custom 0.27 1 7 0 6 10 48 12.9 Refer to WSEC R402.1.5 U-factor Reference and Calculations Code Baseline, U=0.30 - 0.30 1 3 2 6 10 22 6.5 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 0 0.0 Sum of Area and UA 69 19.4 0 1 Exterior Doors Area Weighted U 0.279 Overhead Glazing Plan Component Glazing ID Description U Feet Inch Feet Inch - - - - - 0.0 0 0 0 Overhead Glazing Area Weighted U Vertical Glazing Schedule Rows to Show 12 Plan Component Glazing ID Description U Feet Inch Feet Inch Exempt - - - 1 U=0.22 (2021 1.1; 2018 1.5)Table 406.2 / 406.3 0.22 1 10 6.65 66.5 14.63 2 - - 3 - - 4 - - 5 - - 6 - - 7 - - 8 - - 9 - - 10 - - 11 - - 12 - - Sum of Area and UA 66.5 14.6 0 Vertical Glazing Area Weighted U 0.220 Vertical Glazing and Doors Area Weighted U 0.250 Flat/Vaulted Ceilings Plan Component Attic ID Description U R60 blown Attic STD baffled (2021 Code Baseline)10-7 0.024 892 21.4 892 21.4 0 Walls (Above Grade) Plan Component Wall UA Area UARef. Sum of Area and UA Ref. Ref. Height Notes Height Area Width Qt. Sum of Area and UA Qt. UAArea HeightWidth Width 1/25/2024C:\Users\kylem\Desktop\C3 Calculator.xlsm 8/7/2026 WSU Code Compliance Calculator, WSEC 2018 ID Description Ref. U UA R21 cavity+R0 foam INT 2X6W Lap (2018 Code Baseline)10-5 0.054 1,021 55 1,021 55 0 Net Area Sum of Area and UA 1/25/2024C:\Users\kylem\Desktop\C3 Calculator.xlsm 8/7/2026 WSU Code Compliance Calculator, WSEC 2018 Floor (over crawl or exterior) Plan Component Floor UA ID Description Ref. U 0 0 0 Slab on Grade (less than 2 feet below grade) Plan Component Slab ID Description Ref. F FP R10 Fully insulated 10-2 0.360 136 49 136 49 0 Below Grade Walls and Slabs Plan Component Slab Wall Wall Wall Slab ID Description Depth Ref. U Area UA UA Sum of Area, Length and UA 0 0.0 0 0 0 Links to Download Forms, Checklists and Other Resources Compliance Certificate Instructions Insulation Certificate for Residential New Construction Duct Testing Affadavits Existing Construction New Construction Prescriptive Checklist for 2018 WSEC Alterations (Remodel) Worksheet Show Ventilation Requirements Conditioned Floor Area 892 sq. ft. Number of Bedrooms Run-Time Percent in Each 4-Hour Segment Is the system Balanced? Is the system Distributed? Ventilation Code Section IRC, Chapter 15 Whole House Mechanical Ventilation Airflow Rate CFM Show HVAC Thermal Distribution System Download RS-33 (2018) Is this a hydronic heating system? Location of Ducts Location of Air Handler Is Duct Testing Required? No Show Heating System Sizing - Proposed Design Try Out BetterBuiltNW's HVAC Sizing Tool: Nearest Weather Station Indoor Design Temperature 70 F Outdoor Design Temperature 24 F Design Temperature Difference (∆T)46 F Conditioned Floor Area, Proposed Design 892 ft2 Conditioned Volume ft3 Volume assuming ceiling height of 8.5 ft = 7582 ft3 0.00 Leave blank to use default of 8.5 ft. ceiling height HVAC System Type Heat Pump F Slab Slab Perim Anacortes Unducted Show Heating System Sizing? Area No Sum of Perimeter and FP Slab Perim Compliance Certificate Insulation Certificate Sum of Area and UA Show Distribution System Calculator? Show Ventilation Calculator? http://www.energy.wsu.edu/Documents/Duct%20Testing%20Standards%20_2018%20WSEC.pdf Unducted https://betterbuiltnw.com/resources/hvac-sizing-tool Link Prescriptive Checklist Affidavit, Existing Affidavit, New Worksheet 1/25/2024C:\Users\kylem\Desktop\C3 Calculator.xlsm 8/7/2026 WSU Code Compliance Calculator, WSEC 2018 Location of HVAC Distribution System Unducted Sum of UA, including exempt door and window 160 Envelope Heat Load 7,339 Btu / Hour Sum of UA X ∆T Air Leakage Heat Load 3,767 Btu / Hour ((Volume X 0.6) X ∆T) X .018)) Building Design Heat Load 11,106 Btu / Hour Air Leakage + Envelope Heat Loss Building and Duct Heat Load 11,106 Btu / Hour For ducts located in unconditioned space: Sum of Building Heat Loss X 1.1 For ducts located in conditioned space or ductless: Sum of Building Heat Loss X 1 Maximum Heat Equipment Output 13,882 Btu / Hour Building and Duct Heat Loss X 1.25 for heat pumps 4.1 kW Building and Duct Heat Loss X 1.40 for all other systems 1/25/2024C:\Users\kylem\Desktop\C3 Calculator.xlsm 8/7/2026 DRAWN BY: BRUCE RUSTAD EXISTING & PROPOSED SITE PLAN DATE: 04/18/26 SCALE: 1" =20'-0" ON 11" x 17" PAPERSCALE: 1" =10'-0" ON 22" x 34" PAPER NOTES: 1. DURING CONSTRUCTION, THE RUN OFF WILL BE CONTROLLED WITH ADJACENT PROPERTY.SILT FENCES AND SHALLOW SWALES TO PROTECT THE PROTECTOR INSTALLED PER WSDOT DETAIL 1-40.20-002. THE STREET STORM WATER CATCH BASIN WILL HAVE A STORM DRAIN INLET 3. STREET AND DITCHES WILL BE CLEANED DAILY OF ERISION RUN-OFF IF ANY. 4. BEFORE CONSTRUCTION BEGINS, A SITE WALK WILL TAKEPLACE TO IDENTIFY THE CONDITION OF THE STREET, CURB & GUTTER.ALL BROKEN AREAS WILL BE REPLACED TO THE CITY'S APPROVALPRIOR TO THE ISSUANCE OF THE CERTIFICATE OF OCCUPANCY. PARCEL #: P33069 & P56650 ADDRESS: 808 37th STREET JUSTIN PARKINS ADU Xrefld: 350230-0-078-0008PLUMBING TO COMPLY WITH THE IRC 2021 BUILDING CODES 2021 UNIFORM PLUMBING CODE BUILDING TO COMPLY WITH THE 2021 WASAHINGTON STATE ENERGY CODE CONSTRUCTION NEEDS TO COMPLY WITHBUILDER TO VERIFY ALL DIMENSIONS 7,066 SQ. FT. 25.9% PERCENT OF COVERAGE LOT AREA (BOTH LOTS)HOUSE PERCENT OF COVERAGE EXISTING EXISTING IMPERVIOUS AREA PERCENT OF IMPERVIOUS 56% DRIVEWAY & SIDEWALKS 5. TIE-INTO CITY WATER & SANITARY SEWER. DRAWING INDEX: 1. PROPOSED SITE PLAN2. EXISTING & NEW ELEVATIONS 4. EXISTING & NEW FOUNDATION PLAN 5. EXISTING & NEW ROOF PLAN6. SECTIONAL DETAILS 3. EXISTING & NEW FLOOR PLANS 1 1 of 7 ZONED R-3 LOT AREA TOTAL IMPERVIOUS 3,964 SQ. FT. 7. EXCESS CONCRETE TO BE REMOVED 1,238 SQ. FT. 37TH STREET 11 8 . 0 0 ' N 0 d 0 3 ' 3 1 " E 11 8 . 0 0 ' N 0 d 0 3 ' 3 1 " E 59.99'N 89d 56' 34" E 59.99'N 89d 56' 34" E VACATED ALLEY SEWER EXISTING SITE PLAN EXISTING HOUSE EXISTING GARAGE CO N C R E T E S I D E W A L K PO R C H WOODEN FENCE CO N C R E T E S I D E W A L K TREE BUSH BUSH BUSH TREE 7.6' 3.8' 12./7' REMOVE THISPORTION REMODEL THISPORTION GRASS GRAVEL GRASS GRASS 37TH STREET 11 8 . 0 0 ' N 0 d 0 3 ' 3 1 " E 11 8 . 0 0 ' N 0 d 0 3 ' 3 1 " E 59.99'N 89d 56' 34" E 59.99'N 89d 56' 34" E SEWER CITY WATER PROPOSED SITE PLAN EXISTING HOUSE CO N C R E T E S I D E W A L K CO N C R E T E S I D E W A L K TREE BUSH BUSH BUSH TREE 3.8' GRASS GRASS GRASS EXISTING GARAGEREMODELED INTO AN ADU PERCENT OF COVERAGE PERCENT OF COVERAGE NEW GARAGE 600 SQ. FT.TOTAL 1,838 SQ. FT. 892 SQ. FT.ADUTOTAL 2,130 SQ. FT. 30% HOUSE GARAGE 1216 SQ. FT. NEW IMPERVIOUS AREA PERCENT OF IMPERVIOUS 49 % DRIVEWAY & SIDEWALKS LOT AREA TOTAL IMPERVIOUS 3,473 SQ. FT. HOUSE 892 SQ. FT.ADU PATIO 127 SQ. FT. 5.79' 10.71' 25.6' 4.6' 20' DOWNSPOUT DOWNSPOUT DOWNSPOUT DOWNSPOUT DOWNSPOUT 7. BRACE WALL PLAN 25.6' 20' EXISTING DOWNSPOUTEXISTING DOWNSPOUTEXISTING 4" SOLID PVCNEW TO INTO EXISTINGDRAINAGE SYSTEM 4" SOLID PVCEXISTING DOWNSPOUTNEW DOWNSPOUTNEW BMP C233SILT FENCE BMP C233SILT FENCEBMP C233SILT FENCE 9' x 14'PATIO CO N C R E T E B O R D E R 6x6 BORDER TREE TREE GRAVEL GRAVEL GR A V E L GRASS FL O W E R B E D CITY WATERNEW 6x6 BORDER TREE TREE FL O W E R B E D REV. #1 05/13/26 P33069 P56650 7,066 SQ. FT.LOT AREA (BOTH LOTS)HOUSE 1,238 SQ. FT. GRAVEL AREA 910 SQ. FT. 600 SQ. FT.1,238 SQ. FT.7,066 SQ. FT. 7,066 SQ. FT.1,238 SQ. FT. 1,216 SQ. FT. 600 SQ, FT. 1238 SQ, FT. (ORINANCE NO.475)(ORINANCE NO.475)VACATED ALLEY 127 SQ, FT. Legal Description P33069: TAX 32AAA E 60 ft OF FOL TR BAAP 520 ft. E & 4127 FT. N OF SW C GOVERNMENT LOT 2, SECTION 30. TOWNSHIP 35NORTH, RANGE 2 EAST, W.M. TH E 482.3 FT TH S 100 FT. TH W 482.3 FT TH N 100 FT TPB LESS E 60 FT. & TAX 32AAB. Legal Description P56650: FRACTIONAL LOTS 17 AND 18. BLOCK 12, BEALE'S MAPLE GROVE ADDITION TO THE CITY OF ANACORTES, ACCORDING TOPLAT THERE OF RECORDED IN VOLUMN 2 OF PLATS. PAGE 19, RECORDS OF SKAGIT COUNTY, WASHINGTON. TGW S1/2 OF VAC ALLEY NOTE: Lots will be merged byconstruction. Staff encouragesthe property owner to combinethe two parcels with SkagitCounty in order to have onetax parcel in the future. CO N C R E T E D R I V E W A Y GRAVEL GRAVELGRAVELGRAVEL CITY WATER THREE OFF STREET PARKING TWO ON STREET PARKING THREE OFF STREET PARKING TWO ON STREET PARKING CITY WATEREXISTING SEWEREXISTING SEWERNEW EXISTING DRAINAGEDOWNSPOUTEXISTING 6. TIE-INTO EXISTING DOWNSPOUT DRAINAGE 22" x 34" PAPER SIZE --- SCALE IS 1/4" = 1'11" x 17" PAPER SIZE --- SCALE IS 1/8" = 1' DRAWN BY: BRUCE RUSTAD EXISTING & NEW ELEVATIONS DATE: 04/18/26 PARCEL #: P33069 ADDRESS: 808 37th STREET JUSTIN PARKINS ADU Xrefld: 350230-0-078-0008PLUMBING TO COMPLY WITH THE IRC 2021 BUILDING CODES 2021 UNIFORM PLUMBING CODE BUILDING TO COMPLY WITH THE 2021 WASAHINGTON STATE ENERGY CODE CONSTRUCTION NEEDS TO COMPLY WITH BUILDER TO VERIFY ALL DIMENSIONS 2 2 of 7 ZONED R-3 GRADEGRADE EXISTING SOUTH ELEVATION GRADE GRADE EXISTING WEST ELEVATION EXISTING NORTH ELEVATION GRADE GRADE GRADE GRADE EXSTING EAST ELEVATION GRADE GRADE NEW SOUTH ELEVATION GRADE GRADE NEW EAST ELEVATION GRADE GRADE NEW WEST ELEVATION GRADE GRADE NEW NORTH ELEVATION 12 4 NEW HARDIE- BOARD SIDING 5/4x4 TRIM 5/4x4 TRIM8'-6" REMOVE THIS PORTION OF GARAGE 22" x 34" PAPER SIZE --- SCALE IS 1/4" = 1'11" x 17" PAPER SIZE --- SCALE IS 1/8" = 1' DRAWN BY: BRUCE RUSTAD EXISTING & NEW FLOOR PLANS DATE: 04/18/26 PARCEL #: P33069 ADDRESS: 808 37th STREET JUSTIN PARKINS ADU Xrefld: 350230-0-078-0008PLUMBING TO COMPLY WITH THE IRC 2021 BUILDING CODES 2021 UNIFORM PLUMBING CODE BUILDING TO COMPLY WITH THE 2021 WASAHINGTON STATE ENERGY CODE CONSTRUCTION NEEDS TO COMPLY WITH BUILDER TO VERIFY ALL DIMENSIONS 3 3 of 7 ZONED R-3 EXISTING FLOOR PLAN LIVING EXISTING GARAGE 22' 24' 12'12' 22' 12' 10' 0 04 x 4 XO EGRESS BATH 50 cfm FAN REFR. FA N 16 0 c f m RA N G E EX H A U S T KITCHEN DINING 0 0 3 x 3 X O 30 3 0 1 x 5 P I C 3 0 1 x 5 P I C BEDROOM NEW FLOOR PLAN 892 SQ. FT. LIVING AREA 26 26 6 0 2 x 1 X O CLOSET BEDROOM DW 6 03 x 3 XO 06 S L D G . G L . D R . 5 DBL. DR.6 W/D CLOSET 0 0 4 x 4 X O EG R E S S 4'16'4' 12' 24' 34' ON DEMANDHOT WATER 6 BI-PASS DR.0 6 BI-PASS DR.0 2 P K T . D R . 6 TU B SH O W E R EXISTING 2x4 WALLSALL 8'-6" CEILING STORAGE8'-6" CEILING 24' 44' 34' 10'REMOVE GARAGE DOOR& NEW WALL TO BE 2x6's@ 16" CTRS. WALL INEXISTING WINDOW WALL INEXISTING DOOR WALL INEXISTING WINDOW PORTION OF BUILDINGREMOVE EXISTING BACK 24' 22' 44' 22' 18'-5" 3'-7" 22' 8' 2'-612" 11'-512" 8'-1112"3'-6"3'-912"5'-9" 3'-912"7'-9" 20'-912" 2'-412" 10'-10" EXISTINGHOUSE4'-6" 6'-6" MAKE EXISTING 2x4 WALL TO2x6 @ 16" CTS STUD WALL 7'-10" CEILING HEIGHT FIRE WALL 5/8" Type X REMOVE ALL EXISTINGSHINGLE SIDINGNEW SIDINGHARDIE-PLANK EXISTING 2x4 STUDSNEW 2x6 STUDS @ 16" CTRS. 7'-10" CEILING HEIGHT 2' WINDOW SCHEDULE SIZE FRAME DESCRIPTIONNO. A B AMOUNT 2 U factor ( E .22) 2 4'-0" x 4'-0" 1'-3" x 5'-0" COMPOSITE C 1 3'-6" x 3'-0" AMOUNT DESCRIPTIONSIZE DOOR SCHEDULE 3 2 1 2'-6" x 6'-8"x 1-3/8" 2 1 4 1 3'-0" x 6'-8"x 1-3/4" PICTURE, DBL. GLAZEDCOMPOSITE COMPOSITE EXTERIOR 1/2 LITE DOOR 2 6'-0" x 6'-8"x 1-3/8" BI-PASS DOOR * ALL EXTERIOR WALLS TO BE INSULATED R-21 CO DETECTOR SMOKE DETECTORSD SHEATHED w/ 1/2" GYP. BD. BOTH SIDES * ALL INTERIOR WALLS TO BE FRAMED w/ 2x4 @ 16" CTRS. && SHEATHED w/ 1/2" GYP. BD. INTERIOR. * ALL EXTERIOR WALLS TO BE FRAMED w/ 2x6 @ 16" CTRS. & EXCEPT AS NOTED. NOTES: TOTAL CREDITS 5.0 Credits 2021 ENERGY CREDITS PER WSECC Table 406.2 LESS THAN 1500 SQ. FT. 5 CREDITS 1.1.1 Prescriptive Building Envelope 0.5 Credit * FENESTRATION ADU AREA IS 120.6 SQ. FT. 2'-6" x 6'-8"x 1-3/8"INTERIOR DOOR SLIDER, DBL. GLAZED, EGRESS U factor ( E .22) 2. 3.5 Mini-split Heat Pump 1.5 Credit3.2.1 Air Leakage Control and Efficient Ventilation 1.0 Credit 5 1. Inverted-driven ductless mini-split heat pump 2.0 Credit 4. SHEATHED w/ 7/16" OSB & 15# BUILDING PAPER EXTERIOR U factor ( E .22)POCKET DOOR SLIDER, DBL. GLAZED D 1 3'-0" x 3'-0"COMPOSITE U factor ( E .22)SLIDER, DBL. GLAZED E 1 2'-6" x 1'-0"COMPOSITE U factor ( E .22)SLIDER, DBL. GLAZED ALARMCO A A B B C D E 1 2 2 3 4 4 5 5 1 6'-2" x 6'-8"x 1-3/8"DOUBLE DOOR 6 6 1 6'-0" x 6'-8"SLIDING GLASS DOOR SD SD AL A R M CO 2'-6" 2'-6" 8'-10" 6' 4' 7'-2" 5'-5" 14'-9" 3'-8" 5'-6" 16'-6" 4'-3" 12'12' 6'6' 4' CS - W S P CS-WSP CS - W S P CS - W S P CS-WSP CS - W S P EXISTINGHOUSE4'-6" 6'-6" 7'-10" CEILING HEIGHT7'-10" CEILING HEIGHT 7'-10" CEILING HEIGHT 7'-2" 7' 4' 14'-10" CS-WSP 1 HOUR RATED FIRE WALL 5/8" Type XGYP. BD. BOTH SIDES1 HOUR RATED GYP. BD. BOTH SIDES REV.#1 07/07/26 CS-WSP CS - W S P CS - W S P CS - W S P CS-WSP CS-WSP CS - W S P CS - W S P 22" x 34" PAPER SIZE --- SCALE IS 1/4" = 1'11" x 17" PAPER SIZE --- SCALE IS 1/8" = 1' DRAWN BY: BRUCE RUSTAD EXISTING & NEW FOUNDATION PLANS DATE: 04/18/26 PARCEL #: P33069 ADDRESS: 808 37th STREET JUSTIN PARKINS ADU Xrefld: 350230-0-078-0008PLUMBING TO COMPLY WITH THE IRC 2021 BUILDING CODES 2021 UNIFORM PLUMBING CODE BUILDING TO COMPLY WITH THE 2021 WASAHINGTON STATE ENERGY CODE CONSTRUCTION NEEDS TO COMPLY WITH BUILDER TO VERIFY ALL DIMENSIONS 4 4 of 7 ZONED R-3 EXISTING GARAGE NEW FOUNDATION PLAN EXISTING STORAGE 22' 4" THICK CONCRETE SLABSLOPING TOWARDS GARAGE DOOR 4" THICK CONCRETE SLAB 17' 12' 6" STEM WALL w/ FOOTING 6" STEM WALL w/ FOOTING REMOVE FOUNDATION & CONCRETE SLAB EXISTING FOUNDATION REMOVE CONCRETE STEP 22' 22' 22' 2'22' 8' 14' 7/16" OSB SHEATHING (2) HORIZ #4 REBAR (CONT.) 30 TIMES THE REBAR DIA. w/ MIN. TWO SETS OF TIES SPLICE LENGTH TO BE @ 48" CTRS.VERTICAL #4 REBAR w/ STD. HOOK LOCATED NOT MORE THAN 12" FROM ENDS ON 4'-0" CENTERS GRADE 3"x3"x1/4" GALV. PL. WHR.1/2" X 10" A-BOLTS HORIZ #4 REBAR (CONT.)IN UPPER 1' 6" 12" 8" 8d @ 6" CTRS. 2x6 STUDS @ 16" CTRS. WALL OR LESS THAN SEVEN BOLT DIA. 3-1/2"FROM EACH END OF PIECE MIN. OF 2 BOLTS PER PIECE FILTER FABRIC DRAIN ROCK IMPERVIOUS UPPER 1' FOUNDATION BACK FILL HORIZONAL #4 REBAR @ 24" CTRS. 30 TIMES THE REBAR DIA. w/MIN. FOUR SETS OF TIES SPLICE LENGTH TO BE NOT TO SCALE 6" STEM WALL EVENLY SPACED ALONG SPLICE 6" MIN. 2" EXTRUDED POLYSTYRENER 204" THK. CONC. SLAB w/ 6x6 WIRE MESH 6 MIL BLACK VISQUEEN w/ 4" PVC GUTTER DRAIN PIPEGRAVITY 18" 12" GRADE SLOPE 1/4" per 12" (2) HORIZ #4 REBAR (CONT.) 30 TIMES THE REBAR DIA. w/MIN. TWO SETS OF TIES SPLICE LENGTH TO BE EVENLY SPACED ALONG SPLICE NOT TO SCALE PATIO SECTIONAL 4" CONC. SLAB 6" STEM WALL(TYP) 4" THK. THICKENED EDGE (3) #4 x 12" REBARDRILLED & GLUED INTOEXISTING STEM WALL (3) #4 x 12" REBARDRILLED & GLUED INTOEXISTING STEM WALL EXISTING 6" STEM WALL (2) #4 HORIZ. REBAR 12' 8'-3" DRILED INTOEXISTING STEM WALL #4 VERT. REBAR18" CTRS. DRILLED INTOEXISTING FOOTING REMOVE CONCRETE STEP EXISTING ON-EVEN CONCRETE SLAB 2" EXTRUDED POLYSTYRENER 20 6 MIL BLACK VISQUEEN w/ 4" THK. CONC. SLAB w/ 6x6 WIRE MESH NEW NEW 12' 22' 10' 12' 24' 2" EXTRUDED POLYSTYRENER 20 4" THK. CONC. SLAB 6x6 WIRE MESH 6 MIL BLACK VISQUEEN w/ TIE-INTO EXISTING DRAINAGE PATIO ADU FOUNDATION NEW FOUNDATION FOUNDATION FOUNDATION FOUNDATIONEXISTING CONC. SLAB 22" x 34" PAPER SIZE --- SCALE IS 1/4" = 1'11" x 17" PAPER SIZE --- SCALE IS 1/8" = 1' DRAWN BY: BRUCE RUSTAD EXISTING & NEW ROOF PLANS DATE: 04/18/26 PARCEL #: P33069 ADDRESS: 808 37th STREET JUSTIN PARKINS ADU Xrefld: 350230-0-078-0008PLUMBING TO COMPLY WITH THE IRC 2021 BUILDING CODES 2021 UNIFORM PLUMBING CODE BUILDING TO COMPLY WITH THE 2021 WASAHINGTON STATE ENERGY CODE CONSTRUCTION NEEDS TO COMPLY WITH BUILDER TO VERIFY ALL DIMENSIONS 5 5 of 7 ZONED R-3 EXISTING ROOF PLAN LIVING EXISTING GARAGE BATH 50 cfm FAN REFR. FA N 16 0 c f m RA N G E EX H A U S T KITCHEN DINING BEDROOM NEW ROOF PLAN CLOSET BEDROOM DW W/D CLOSET EXISTINGHOUSE TU B SH O W E R STORAGE PORTION OF BUILDINGREMOVE EXISTING BACK EXISTINGHOUSE 4x8 #2DF HDR. 4x 1 0 # 2 D F H D R . 4x 8 # 2 D F H D R . 4x 8 # 2 D F H D R . 4x 8 # 2 D F H D R . 4x 1 0 # 2 D F H D R . EXISTING BEAM 22' 22' 4/12 PITCHENGINEERED HIP TRUSSES @ 24" CTRS. EXISTING 4/12 PITCHED ROOFSTICK FRAME OVER @ 24" CTRS. NEW 4/12 PITCHED ROOF 6' EXISTING 4/12 STICK FRAME OVER NEW 12' 22' 12' 12' 16' 12' 10' 2' 24' PITCHED ROOF 2x6 BACKING 4/12 PITCHEXISTING HIP TRUSSES @ 24" CTRS. 4/12 PITCHEXISTING HIP TRUSSES @ 24" CTRS. 12'-9" 8' 13'-5" 2' GABLE PORCH ROOFSTICK FRAME 22" x 34" PAPER SIZE --- SCALE IS 1/2" = 1'11" x 17" PAPER SIZE --- SCALE IS 1/4" = 1' DRAWN BY: BRUCE RUSTAD SECTIONAL DETAILS DATE: 04/18/26 PARCEL #: P33069 ADDRESS: 808 37th STREET JUSTIN PARKINS ADU Xrefld: 350230-0-078-0008PLUMBING TO COMPLY WITH THE IRC 2021 BUILDING CODES 2021 UNIFORM PLUMBING CODE BUILDING TO COMPLY WITH THE 2021 WASAHINGTON STATE ENERGY CODE CONSTRUCTION NEEDS TO COMPLY WITH BUILDER TO VERIFY ALL DIMENSIONS 6 6 of 7 ZONED R-3 ENGINEERED HIP TRUSSES4/12 PITCH@ 24" CTRS. ASPHALT 3 TAB SHINGLES15# FELT USE METAL "H" CLIPS AT UNSUPPORTED EDGES.FACE GRAIN PREPENDICULAR TO SUPPORTS.INTERMEDIATE SUPPORTS. EDGES & 8d @ 10" CTRS. @ w/ 8d @ 6" CTRS. AT ALL SUPPORTED7/16" OSB SHEATHING NAILED R-60 INS. R-21 INSULATION SEE ELEVATIONS FOR SIDING VAPOR BARRIER2x6 @ 16" CTRS. WALL & 8d @ 12" CTRS. AT w/ 8d @ 6" CTRS. AT PANEL EDGES7/16" OSB. BLOCK ALL PANEL EDGES & INTERMEDIATE FRAMING1/2" GYP.BD. BOTH SIDES 2x4 @ 16" CTRS. WALL 2" EXTRUDED POLYSTYRENE R-20 4" CONCRETE SLABw/ 6x6 WIRE FABRIC& 6 MIL VISQUEENw/ 6x6 WIRE FABRIC & 2" EXTRUDED POLYSTYRENEPOUR 4" THK. CONCRETE SLAB OVER EXISTING 4" CONCRETE SLAB EXISTING 4" CONCRETE SLAB 2x4 BLOCKING METAL FLASHING AIR FLOW METAL GUTTER FASCIA BOARD 4/12 PITCH ENGINEERED TRUSS RIDGE VENT 12 4 NEW CONCRETEWHERE GARAGE DOOR REMOVED SIMP. HURR. TIESEACH TRUSS 7'-10" 3/4" CRUSTED STONE OR EQUAL FILL REV. #1 CHANGED CEILING INSULATION TO R-60 22" x 34" PAPER SIZE --- SCALE IS 1/4" = 1'11" x 17" PAPER SIZE --- SCALE IS 1/8" = 1' DRAWN BY: BRUCE RUSTAD BRACE WALL PLAN DATE: 04/18/26 PARCEL #: P33069 ADDRESS: 808 37th STREET JUSTIN PARKINS ADU Xrefld: 350230-0-078-0008PLUMBING TO COMPLY WITH THE IRC 2021 BUILDING CODES 2021 UNIFORM PLUMBING CODE BUILDING TO COMPLY WITH THE 2021 WASAHINGTON STATE ENERGY CODE CONSTRUCTION NEEDS TO COMPLY WITH BUILDER TO VERIFY ALL DIMENSIONS 7 7 of 7 ZONED R-3 LIVING BATH8' CEILING 50 cfm REFR. FA N 16 0 c f m RA N G E EX H A U S T KITCHEN DINING BEDROOM CLOSET BEDROOM DW W/D CLOSET TU B SH O W E R CS-WSPCS-WSP CS - W S P CS - W S P CS-WSP CS - W S P CS-WSP CS-WSP CS - W S P CS - W S P CS - W S P 4' 4' 4' 4' 4' CS - W S P 4' 4'4' 4'4' 4' 4' 4' A B 1 1 CS - W S P 4' 2 2 A 22'-6" 20'-9" 3 3 B 18' DOWN PANELSWITHHOLD BRACING REQUIREDTOTAL LENGTH OK11.20 STATUSPROVIDED BRACINGLENGTHREQUIREDWALL LINEBRACED LENGTHBRACINGMETHODLINE BRACEDWALL 1.0 1.0 LETTERED NUMBERED 1.0 1.0 WALL LINESWALL LINESSDS DIRC Table R602.10.3(4) STORY HEIGHT WALL DEAD LOAD SEIAMIC FACTOR TOTAL 1.2 1.2 1.21.2 ROOF & CEILING DEAD LOAD SEISMIC CALCULATIONS2 TOTALFACTORSEISMIC INTERMITTENT SHEATHING BRACED WALL LINES GB = 1/2" GYPSUM BOARD w/ 7" NAIL OR SCREW ON CENTER SPACING FIELD & EDGESWSP = WSP (WOOD STRUCTUAL PANEL) 6" NAILING ON CENTER EDGE & 12" NAILING ON CENTER FIELD B WALLBRACED LINE METHODBRACING SPACING BRACEDWALL LINE REQUIREDBRACING HOLDWITHPANELS DOWN TOTALREQUIRED BRACING LENGTH BRACING PROVIDED 1 CS-WSP 2 STATUS A WALL HEIGHT ROOF EAVE TO RIDGE HEIGTH EXPOSURE CATEGORY IRC Table R602.10.3(2)115 MPH NUMBER OF BRACE WALL LINES WIND FACTOR TOTAL WALL LINES WALL LINES 1.0 1.0 NUMBERED LETTERED 1.0 1.0 .95.95 WINDFACTORTOTAL WIND CALCULATIONS MAIN FLOOR BRACE WALL PLAN 1.30 OK1.24 B A OK OK OK OK OK12 12 1.24 LENGTH 1 0 0 1 3 1.20 OK2 22.50 1.24 1.24 0 OK GB GB OK3 22.50 .95 .95 4.00 4.00 3.80 3.80 1.20 1.20 20.75 18.00 18.00 3.67 1.0 .95 5.90 4.55 7.32 3.20 3.96 12' GB 12 8 8 1.20 1 0 0 1 0 22.50 22.50 20.75 18.00 18.00 4.15 4.98 4.50 5.40 4.50 5.40 3.60 4.32 12 12 12 8 8 7.20 8.64 CS-WSP 4' CS - W S P CS-WSP CS-WSP CS-WSP CS-WSP CS-WSP CS-WSP CS-WSP REV. #1 07/07/26 Small Site Construc�on SWPPP (002) Updated 5/22/5025 page 1 of 6 Permit #: Received by: Small Site Construction SWPPP City of Anacortes Stormwater · 904 6th Street · Anacortes, WA 98221 Stormwater: 360-630-1037 General Information Project Name Parcel Size acres Project Address Property Owner Phone Site Contact Phone Project Description Describe the nature and purpose of the construction project. Include the total size of the area, any increase in existing impervious area; the total area expected to be disturbed by clearing, grading, excavation or other construction activities, including off-site borrow and fill areas; and the volumes of grading cut and fill that are proposed. Erosion control lead or responsible party Phone Engineer/Firm Phone Site Conditions Adjacent Areas: See the site plan, drainage plan, and construction drawings approved for the associated permit. Critical areas: See the critical areas site plan approved for the associated permit. REQUIRED before SWPPP can be approved: 1.Attach a copy of your stormwater site plan submitted with your building/grading permit application and attach pictures. 2.Add a map of where your stormwater goes from your project to the discharge site. 3.Stormwater site plan shall list all BMPs for inspectors of construction site. REQUIRED before final can be approved: 1. BMP T5.13: Post-Construction Soil Quality and Depth BLD-2026-0336 A.Esterholt Stormwater Review PLANNING, COMMUNITY, & ECONOMIC DEVELOPMENT DEPARTMENT Mailing Address: P.O. Box 547, Anacortes, WA 98221 Office Location: 904 6th Street, Anacortes WA 98821 Phone: (360) 293-1901 Weekly Erosion Control Self-Inspection Reports All sites that have a Stormwater Pollution Prevention Plan #2, 1-5 or 1-9 are required to submit a weekly erosion control/BMP monitoring inspection report through the citizen portal. These reports can be found on the city website and through the link on the submittals tab in the permitting customer portal. Turning in the weekly report consistently will help keep your project on schedule and avoid unnecessary delays due to cancelled inspections. Erosion-Control-Inspection-Form--Sites-Less-Than-One-Acre-fillable-PDF (anacorteswa.gov) Stormwater Site Inspection Form (anacorteswa.gov) (For larger sites) We appreciate your assistance in keeping our documentation up to date. Just complete the fillable PDF, save it, and then upload it with the blue upload tab. Small Site Construc�on SWPPP (002) Updated 5/22/5025 page 2 of 6 Small Site Construc�on SWPPP (002) Updated 5/22/5025 page 3 of 6 Best Management Practices Illustration Turn the page to see information corresponding to each numbered circle below. About this Pollution Prevention Plan This is Anacortes’s Small Site Construction Stormwater Pollution Prevention Plan (“Construction SWPPP”) intended to ensure your construction project minimizes erosion and does not contribute pollution, including sediment, to stormwater. This SWPPP is primarily intended for projects under 2,000 sq ft. This plan uses certain Best Management Practices (“BMPs”) from the Stormwater Management Manual. Some detailed descriptions are included; the remainder and additional information are available at https://fortress.wa.gov/ecy/ezshare/wq/Permits/ Flare/2019SWMMWW/2019SWMMWW.htm#Topics/ FrontCover.htm?TocPath=2019%2520SWMMWW% 257C_____0 The listed BMPs are the minimum necessary; if erosion occurs, you must add additional BMPs as necessary to control it. You should include your Construction SWPPP in your contract with your builder. You must keep a copy of this SWPPP on the construction site or within reasonable access to the site for construction and inspection personnel at all times. Property owners and contractors are responsible for ensuring all aspects of BMPs are followed, including those not shown on the detail sheets. This Construction SWPPP should be considered a living document and must be updated as needed to reflect site conditions. Preserve Vegetation/Mark Clearing Limits Before any land disturbance, including clearing and grading, clearly mark all clearing limits, sensitive areas and their buffers, and trees that are to be preservedwithin the construction area. Retain natural vegetation in an undisturbed state to the maximum extent practical. Use these BMPs: •C101 to preserve natural vegetation •C102 to establish buffer zones around important vegetation you want to save •C103 High Visibility Fencing to mark the boundaries of your buffers •C233 Silt Fence to ensure sediment doesn’t leave the site Establish Construction Access Construction vehicles can damage or compact soils, create sediment pollution, or track sediment onto public roads. •All equipment and vehicles that access the construction area must use an existing driveway or a stabilized construction entrance. •Use BMP C105 Stabilized Construction Entrance wherever traffic will be entering or leaving a construction site if paved roads are within 1,000 ft of the site. Construct a 12-inch thick pad of 4-inch to 8- inch quarry spalls, a 4-inch course of asphalt treated base, or use existing pavement. Place a separation geotextile under the spalls to prevent fine sedimentfrom pumping up into the rock pad. Install the construction entrance prior to any vehicles entering the site, at the location shown on the site plan. Create only one construction entrance per site.1 2 1b 1b 1b 2 1a 4 7 9a 9b 5 9b Small Site Construc�on SWPPP (002) Updated 5/22/5025 page 4 of 6 •Use BMP C103 High Visibility Fencing to restrict traffic to the construction entrance. •Remove any sediment that is tracked onto pavementby shoveling or street sweeping and remove the collected sediment or stabilize it on site. Control Flow Rates (not shown) Stormwater on a cleared site can create significant flows that can damage downstream properties. Protect properties and waterways downstream of the project site from erosion and the associated discharge of turbid waters. If your project is required to control flow rates, you must use the following BMPs as shown on the approved site plan: •C203 Water Bars •C209 Outlet Protection •C235 Straw Wattles Install Sediment Controls When land is cleared of vegetation, stormwater can pick up sediment, a pollutant. BMPs can prevent sediment from leaving the site. You must install sediment controls before land disturbance to effectively minimize and control the discharge of pollutants and sediments. Use and properly install BMP C233 Silt Fence. You must bury the filter fabric as shown in the diagram in order for the BMP to be effective. You must repair the silt fence if it is damaged. Consider the following additional BMPs: •C231 Brush Barrier •C232 Gravel Filter Berm •C234 Vegetated Strip •C235 Straw Wattles Note that C230 Straw Bale Barrier is no longer an approved BMP. Stabilize Soils Leaving soils devegetated or exposed needlessly creates erosion and sediment problems. •Stabilize all exposed soils whenever constructionwork will stop for more than two days at a time during the wet season (October 1 to April 30) or 7 days the rest of the year (the dry season). •Stabilize all exposed soils at the end of the shift before a holiday or weekend. •Stabilize all exposed soils with either vegetation, matcoverings, mulching, or in those areas to be paved, a compacted base material. •Use BMP C123 Plastic Covering over all stockpiles with plastic or burlap if left unworked. Place sand- filled burlap or geotextile bags every 3 to 6 ft along seams and tie them together with twine to hold them in place. •If you excavate soil for the foundation, backfill that soil against the foundation and grade it to drain away from the building. Once the disturbed landscape areas are graded, you must seed or sod the grass areas. Consider the following additional BMPs: •C120 Temporary and Permanent Seeding •C121 Mulching •C122 Nets and Blankets •C124 Sodding •C125 Topsoiling/Composting •C131 Gradient Terraces •C140 Dust Control Protect Slopes (not shown) Slopes can be especially vulnerable to erosion, but BMPs can mitigate sediment problems. Design and construct cut-and-fill slopes to minimize erosion. Use the following practices: •Reduce continuous length of slope with terracing and diversions •Reduce slope steepness •Roughen slope surfaces •Use BMP C123 Plastic Covering over all exposed slopes •Use BMP C120 Temporary and Permanent Seeding as soon as possible on exposed slopes Manage off-site stormwater (run-on) separately from stormwater generated onsite. Divert off-site stormwater or groundwater away from slopes and disturbed areas with interceptor dikes, pipes, or swales. You may not create cut slopes over 4 feet high or slopes steeper than 2 feet horizontal to 1 foot vertical. Fill slopes may not exceed 4 feet high or 3 feet horizontal to 1 foot vertical. Slopes that exceed these criteria require engineering. Consider the following additional BMPs: •C121 Mulching •C122 Nets and Blankets •C124 Sodding •C203 Water Bars •C208 Triangular Silt Dike (Geotextile‐Encased Check Dam Protect Drain Inlets Storm drains are designed to collect and transport clean stormwater, not water contaminated with sediment or other pollutants. Storm drain inlets must be protected so that runoff does not enter the 3 4 5 6 7 Small Site Construc�on SWPPP (002) Updated 5/22/5025 page 5 of 6 stormwater system without first being filtered or treated or both. •Use BMP C220 Storm Drain Inlet Protection to protect all proposed and existing storm drain inletsduring construction so that stormwater runoff does not enter the stormwater conveyance system without first being filtered or treated (or both) to remove sediment or other pollutants. •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). •Keep all approach roads clean. •Do not allow sediment and street wash water to enter storm drains without treatment. Stabilize Channels and Outlets Stormwater channels and outlets can themselves erode unless stabilized with rock or other armoring. Design, construct, and stabilize all on-site conveyance channels to prevent erosion as needed. Use BMP C209 Outlet Protection to provide stabilization, including armoring material adequate to prevent erosion of outlets, adjacent streambanks, slopes, and downstream reaches at the outlets of all conveyance systems. Consider the following additional BMPs: •C122 Nets and Blankets •C202 Channel Lining Control Pollutants Waste materials, demolition debris, and other pollutants that occur onsite during construction can contaminate the stormwater system unless managed. Cement and related products can modify the pH 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. Anytime you pour concrete, perform washout of the concrete trucks following BMP C154 Concrete Washout Area at designated washout areas only. Locate washout areas at least 50 ft from sensitive areas such as storm drains, open ditches, or water bodies, including wetlands. Clean contaminated surfaces immediately following any spill incident. Apply fertilizers and pesticides in a manner and at rates that will not result in loss of chemical via stormwater runoff. Use the following additional BMPs: •C151 Concrete Handling •C152 Sawcutting and Surfacing Pollution Prevention •C153 Material Storage, Delivery, and Containment Control De-Watering (not shown) De-watering water extracted from foundations, vaults, or trenches, has similar characteristics to stormwater runoff at the site and can cause the same impacts unless properly managed. You may discharge clean, non-turbid de-watering, such as well-point ground water, to systems that are tributaries to, or directly into, surface waters if the de- watering flow does not cause erosion or flooding or interfere with the operation of the stormwater system. Use the following BMPs: •C220 Storm Drain Inlet Protection •C236 Vegetative Filtration Maintain BMPs (not shown) All temporary and permanent erosion and sediment control BMPs must be maintained and repaired as needed to assure continued performance of their intended function. During the dry season, inspect sediment control BMPs weekly or after a runoff-producing storm event. During the wet season, inspect BMPs daily. Use BMP C150 Materials on Hand to ensure you are ready for a heavy rain. All temporary erosion and sediment control BMPs must be removed within 30 days after the City determines that the site is stabilized or after the temporary BMPs are no longer needed. Trapped sediment must be removed or stabilized on site. Disturbed soil areas resulting from removal of BMPs or vegetation must be permanently stabilized. Manage the Project (not shown) Phasing a project, especially when revegetation occurs as part of each phase, can help prevent the transport of sediment from the site. •Fully implement this Construction SWPPP at all times. •Modify this Construction SWPPP whenever there is a change in design, construction, operation, or maintenance at the construction site that has or could have a significant effect on the discharge of pollutants to waters of the state. •Inspect, maintain, and repair all BMPs as needed to ensure continued performance of their intended function. 8 9 10 11 12 Small Site Construc�on SWPPP (002) Updated 5/22/5025 page 6 of 6 Protect Low-Impact Development BMPs Low-Impact Development techniques can be damaged if they are compacted or accumulate sediment during construction. If there are any Low-Impact Development BMPs planned for the site: •Use BMP C103 High Visibility Fence to exclude all construction and foot traffic from the infiltration, bio- retention, or rain garden areas. •Protect all infiltration areas or bio-retention and rain garden BMPs from sedimentation through installation and maintenance of erosion and sediment control BMPs on portions of the site that drain into those areas. •Use BMP C233 Silt Fence or C234 Vegetated Strip to control and avoid introducing sediment onto permeable pavements. Bury the bottom of the filter fabric at least 4 inches below the ground surface. Backfill and tamp soil in place over the buried portion of the filter fabric, so that no flow can pass beneath the fence and scouring cannot occur. Drive or place the fence posts into the ground at least 18 inches. A 12-inch minimum depth is allowed if topsoil or other soft subgrade soil is not present and 18 inches cannot be reached. •If pavements are fouled with sediments or no longer pass an initial infiltration test, clean them using procedures from the Stormwater Manual or the manufacturer’s procedures. Consider the following additional BMPs: •C102 Buffer Zones •C208 Triangular Silt Dike •C231 Brush Barries **************************************************************** I acknowledge that I have read the information presented to me and agree to abide by the BMP rules. ______________________ _____________________ Printed name Signature ______________________ Date **************************************************************** 13