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Permit File BLD-2019-0612 3707 W2nd Street (2)
�70; Siie Address Building Permit * If9 F`annina Project S Ft ap\,c 11 SG n per,; Lai-. S rod c In��r-�epar�men��i �n ��ti-iew Trac�;n� -- ANACORTES PUBLIC WORKS DEPARTMENT Steven Lange, Project Manager P.O. BOX AWA 98221 PH(360) 293 1920 E-MAIL: stevel@cityofanacortes.org FAX(360) 293-1938 Review Summary I kmevised) Date: October 162 2019 (Revised November 17 2019) To: Dave Oicles (Permitting) and Rob Frisinger (Plans Examiner) From: Steven Lange Subject: Public Works Engineering Site and Drainage Review for 3709 West 2nd Street cc: Eric Shjarback, Kevin Cricchio A review of the Building Permit documents and Drainage Report was completed on October 16, 2019. ■. W W -� ffl�@N On October 25, 2019 there was a meeting at the front counter between Brian Straatof, Don Measamer (Planning Director) and Steven Lange. Due to the close proximity of the Public Works write up of June 25, 2019 to the adoption of the new subdivision codes and the submittal, it was determined to accept the improvements as outlined in the June 25, 2019 Public Works memo. See attached. Site Plan: (Erosion and Sedimention Plan) 1. Site plan needs to identify the location of the existing improvements relative to the actual property lines. 2. Information provided in Minimum Requirement 2 needs to be shown on the Erosion and Sedimentation Plan, 3. Pedestrian improvements exist along West 2nd Street, 4. Show on the site plan the cut and fill areas? Retaining Walls? Slopes of hard surfaces, etc. 5. Sewer connection for this parcel will be at the sewer main in West 2nd Street. Site plan needs to identify this work. -... . . • Water •Wastewater •Streets •Storm Drainage •Engineering •Solid Waste • Transportation •Equipment •Capital Projects •Development Services _.�. �M� I 1� I i Drainage Analysis • Use the updated Drainage Report format. Enclosed for the applicants use. • Project Description: Project has infiltration. Identify the BMPs used for both Roofs)an y "Other Hard Surfaces . • Project Description: Project needs to include the improvements to the Public Right -of -Way in the overall New and Replaced Hard Surface, which may trigger Minimum Requirements 1 through 9. • Project Description: Provide depth of ground water table. This information should be in the Soils Analysis in Appendix 2. • Project Description: What are the soils type? • Project Description: What is the Sediment Transport Score? • Existing Site Conditions Summary: • Site is currently vegetated with trees. • Site has an approximately Slope of 14.5%. • Developed Conditions Summary: • How will this project change the contours predevelopment vs post development? • What is proposed with the soils excavation? Hauled off -site to an approved disposal site? Stored for soils amended and backfill (BMP T5.13)? • Provide the Drainage Basin information. • Applicability Flow -Chart for Determining Requirements for New Development (Figure I-2.4.1) needs to be completed. • Applicability Flow -Chart (Figure I-2.4.2) can be removed. • Applicability Flow -Chart (Figure I-2.5.1) can be removed. • Minimum Requirement 1: Needs to be completed. • Minimum Requirement 2: The information provided in Minimum Requirement 2 needs to match the Erosion and Sedimentation Plan. • Identify the address of the site and who prepared the responses to Minimum Requirement 2. • Water •Wastewater •Streets •Storm Drainage •Engineering •Solid Waste • Transportation •Equipment •Capital Projects •Development Services • Element 1: Agreed. • Element 2: Agreed. Although, will deliveries, concrete pours be done via the alley way? Or off of West 2nd Street? • Element 3: This item is intended for during construction. Revise to include • BMP C101 —Preserving Natural Vegetation • BMP C235 —Wattles • What is proposed to protect flows towards West 2�d Street? • Element 4: What about the use of BMP C241 Temporary Sediment Pond? The site has infiltration potential? A few sites around town are utilizing tanks on trailers and pumping into the tank to settle sediment before releasing off - site. • Element 5: The use of BMP C233 Silt Fence would be useful at the north end • Element 6: No response. Site has a 14.5% slope. It has yet to be determined if this site is a High Sediment Transport Site and the applicant has not identified a construction schedule • Element 7: Need to complete. • Element 8: Need to complete. • Element 9: Need to complete. Identify the location of BMP C154 Concrete Washout Area and identify that the Contractor will have a Spill Prevention Kit on -site and accessible by all employees and subcontractors at all times. • Element 10: Need to complete. • Element 11: Need to complete. Identify that the property owner and contractor will be maintaining the BMPs on -site. Additionally, the property owner and contractor will be submitting weekly Erosion and Sedimentation Controls to the Building Department. • Element 12: Depending on the Square Footage of New and Hard Replaced Surface, the project may trigger Minimum Requirements 1 through 9, therefore requiring a Certified Erosion Control Specialist. • Element 13: This will be determined by the Feasible BMP in Minimum Requirement 5. • Preparer needs to sign and date • Minimum Requirement 3: Response is provided in the new revised drainage report format. • Minimum Requirement 4: Need to complete. • Minimum Requirement 5: • Project is not Flow -Control Exempt, therefore the project needs to do List #1. • BMP T5.13 Post Construction Soils. Requirement is provided in the new revised drainage format. • List #1 is not completed. Need to complete. • Water •Wastewater •Streets •Storm Drainage •Engineering •Solid Waste • Transportation •Equipment •Capital Projects •Development Services •P. • Appendix 1: Not provided. • Appendix 2: Not provided. • Appendix 3: Response is provided in the new revised drainage report format. • Appendix 4: Not completed. City reviewed and provided the information. • Appendix 5: Not provided. • Appendix 6: Not provided. • Appendix 7: Will be determined on the BMP used. � •Water •Wastewater •Streets •Storm Drainage •Engineering •Solid Waste � •Transportation •Equipment •Capital Projects •Development Services ANACORTES PUBLIC WORKS DEPARTMENT Steven Lange, Project Manager P.O. BOX 547, ANACORTES, WA 98221 PH(360) 293-1920 E-MAIL: stevel@cityofanacortes.org FAX(360) 293-1938 Date: June 25, 2019 To: Planning and Building Departments From: Steven Lange Subject: Residential Building Lot-3707 West 2nd Street (P134168) cc: Eric Shjarback, Don Measamer, Libby Grage, Tess Cooper, Kevin Cricchio The Engineering Department reviewed the frontage improvement requirements for the above referenced parcel and offer the following comments and or recommendations. See attached 8 1/2x11 Vicinity Map — 20 Scale Previous DRG Meeting: • None Zoning: • This property is located within the R2 Zone Subdivision Type: • Existing Parcel of Record Critical Areas: ■ None known in the area ■ Contact the Planning Department regarding Critical Areas requirements. Permits: ■ Right -of -Way Permit for work being performed Inside and Outside the Traveled Way. Contact Justin Symonds, Public Works Inspector, at 360.661.3547. ■ Contact the City of Anacortes Planning Department for additional permitting requirements such as SEPA, Grade and Fill, Clear and Grading, Conditional Use, Building, etc. ® Transportation o Equipment a Capital Projects ®Development Services City of Anacortes Development Standards: ■ The 2018 Development Standards can be found on-line at www.cityofanacortes.org. If the Engineer of Record needs any COA Standard Details in AutoCAD format, they can email me at stevel(Dcityofanacortes.org and request a CD. This CD will be mailed to a provided address. Sewer: ■ For additional Sewer information and design criteria, see the 2011 EDS Standards, Chapter 5 — Sanitary Sewer. ■ There is sewer available for this project via an 8-inch PVC Sanitary Sewer Conveyance System in West 2nd Street. ■ Public records indicate a private side sewer for this parcel being at the NE corner of the property, which is shared with 3705 West 2°d Street. The connection and -pipe size will need to be determined. - - -- - Storm: ■ For additional Storm information and design criteria, see the 2018 EDS Standards, Chapter 2 — Storm Drainage. ■ There is no storm drainage system extended to this property. ■ The project is encouraged to utilize Low Impact Development Techniques. ■ Storm Water, including Water Quantity and Quality will need to comply with the City of Anacortes Drainage Code, Section 19.76 — Storm Water. ■ Any Permanent Storm Water BMP's will require a Drainage Maintenance BMP Covenant to be signed and recorded with the property prior to any Temporary Certificate of Occupancy, Certificate of Occupancy or Final Acceptance being issued. ■ The Threshold requirements have not been determined at this time. See updated Storm Drainage Report format on the City of Anacortes Website. The report can be located in either Public Works or Planning portion of the website. Traffic: ■ Pedestrian facilities are existing across the frontage. Project will need to construct a new Driveway Entrance that meets ADA requirements. ■ WSDOT Standard Plan F-10.12-03 - Cement Concrete Curbs Attached ■ WSDOT Standard Plan F-30.10-03 — Cement Concrete Sidewalk Attached ■ WSDOT Standard Plan F-80.10-04 — Cement Concrete Driveway Entrance (Attached). Type 1 Driveway Entrance. ■ See STR-28 regarding access requirements for residential. Attached ■ Provide a Traffic Control Plan (Current MUTCD Manual) prior to any construction taking place for approval by the City of Anacortes City Engineer. ■ Street Lighting — None needed for this residential project ® Transportation ®Equipment ®Capital Projects ®Development Services ■ Monumentation - The installation of a monument is not required for this residential project. Street: (West 2"d Street) ■ For additional Street information and design criteria, see the 2018 EDS Standards, Chapter 3 - Street. ■ No additional frontage improvements are required under this proposal with the exception of a new driveway entrance, per the above referenced WSDOT Standard Detail. ■ Per AMC 19.24.100 -All improvements required shall be extended as necessary to provide a smooth transition with existing improvements both laterally across the street and longitudinally up and down the street for drainage, vehicular and pedestrian traffic. ■ Maximum-driveway-width-for-Residential-Access-is-2D-feet-wide,-per-the-cur-rent EDS Standards, Chapter 3 - Street, Section STR-28 (Attached). ■ Pedestrian facilities: See discussion under "Traffic" above. ■ Street Trees: Contact Jonn Lunsford @ 360.299.1953, Parks Department for a list of City approved Street Trees. See EDS Standards, Chapter 3 - Streets, Section STR-18.2 regarding Street Trees and Root Barrier requirements. ■ Monumentation: See discussion under "Traffic" above. Street: (Public Alleyway) ■ For additional Street information and design criteria, see the 2018 EDS Standards, Chapter 3 - Street. ■ If the lot is proposed to be accessed via the Public Alley way, the alley will need to be improved to meet the minimum requirements identified in STR15.3 attached). Garbage: ■ Garbage and Recycle will be curb side ■ Contact City of Anacortes Sanitation Department Matt I<oegel at 360.293.1921 for further information as the design moves forward. Water: ■ For additional Water information and design criteria, see the 2018 EDS Standards, Chapter 6 -Water. ■ This property is served by a &inch D.I line along West 2"1 Street. ■ Public Records do not indicate any water service to this property. Once the water meter has been paid for with the Building Permit, the City Water Crew will install a new water service to the property. ■ The nearest Fire Hydrant (801) is located at west of the property at West 2"d Street and Minnesota Avenue. ® Transportation •Equipment ®Capital Projects ®Development Services Fire Coverage: ■ City records indicate Fire Hydrant 11L801 has 100 PSI. This property is within a 250400t radius of this hydrant. ■ Contact Jack Kennedy, Assistant Fire Chief, at 360.293.1925 regarding fire coverage requirements for this project when more information becomes available. Utility Companies: ■ See Anacortes Municipal Code, Section 16.20.080 —Utilities for required Franchised Utilities as well as City of Anacortes Utilities. ■ All utilities are required to be underground. ■ See attached contact list for each utility for local contacts. Fees: ■ See the Planning and Building Department for fees related to building permits. MT. ORM ova Other: ■ For Landscaping and Landscape requirements, see Planning Department. ® Mail Boxes (See Chapter 3 — Streets, Section STR-19): For Mailbox Locations, coordinate location, type and size with the Anacortes Post Master. The access and areas around the mailboxes need to meet ADA requirements. ■ Encroachments (See Chapter 3 —Streets, Section STR-18.3): Prior to any placement of any barricades, material, earth, gravel, rock, debris or any other material or thing over, under or upon the Public Right -of -Way or easement, an Encroachment Agreement shall be obtain from the City of Anacortes. See the Anacortes Municipal Code, Section 12.30 for additional information regarding the Encroachment Agreement and processes. Contact Steven Lange at 360.299.1983 or via email at stevel@cityofanacortes.org regarding questions or to obtain an agreement. ■ Improvements shall be designed by a Professional Engineer, licensed in the State of Washington. ■ Improvements are subject to a 2-year Maintenance Bond in the amount of 10% of the actual construction costs. ® Transportation ®Equipment ®Capital Projects ®Development Services ■ Contractor shall be licensed by the State of Washington and hold a City of Anacortes Business License, Thanks, Steven Lange Enclosed ® Transportation ®Equipment � Capital Projects ®Development Services W �' / - / // / � �� / � A `® ,� � � / �� � je n'� „ �� Vv /� � i i i / � .� r. � i��� �` C Y . �l .. � i�� �� �� ��i � PC (2018�) � `r � �, i� �N i "= � � \ ��� \ � \ �� � � � P134168 � SURVEY (AF#Z0�80�25001Z) \ � \ � � � \ � � �P134167 JEY (`A\F#201804250012) � \ ` \ \` � �\ � � � �' � \ ,\ � � � � �. �� \, � � �J� i �� � � PC (2018) , � � � _, � F� U) 00 0 N s s � w RaY UaW o Q I T F Z KZ ru LL= - a-�.c� £fA� Cl ��' Pdy ya' t`�, W ~ h a 6 a t WtW Ci 4)y by a /♦ Q T a. v' ° o¢ 0 m d o Pci o Z d _ or m:T C � Ago 5 �G O C w �d oa >� ornW P ds 05 l_"/ Lf w > Maw e N & ?Nm ° xa� LLapC b�Q$ pRo ~ a a m a W o=� o a -W= a Q 1� �zo a Q E'c° W ' a m Woo o z vca :i y ZN =W " CONS Cl) o p ¢� �d v�i i=o N / age W V tW. 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COm m4) �b3o0om"=y a at0N N 0GW a IL w LL .6 Mn0m� 0O c C C oW m amo mNO0 W d)o zNa imvwWNa v2oWpm um Q C E 0 a Cw EWEO wo a0 O(D 9 °00LcmE to 3a0) U'U0Q`SFno E`a mi m t0 0 Z p z N W z g��arrGOO WQoamQFw�HZH�ur Oyo"vaQN��WZOO �00 a O mp O a OCc C o a -n` f6 �A8-NMV2iO }K mit / 2 amp !I \ \ 2 « \§ §� !\E \(0 \/ y 5 / �Z o■ §§§=§§§ : (3) STREET STANDARDS NOVEMBER 2018 The contractor must submit conduit and vault as -built drawings showing the right -of --way and property corners, offset dimensions, depth of installation, conduit diameter, and size and type of junction box/vault. Mark conduit with detectable orange colored marking tape or wire prominently labeled "Caution Telephone CATV." STR-28 PROPERTY ACCESS STR-28.1 Driveways Driveway Standards Measured Curb to Curb Minimum to Property Line 8 feet Minimum Between Driveways 30 feet Minimum Tangent Curb Length to 50 feet Intersection 20 feet 30 feet *Maximum Width at Street Residential **Commercial Right Turn Only at Signalized Intersections <_ 250 feet <_ 125 feetArterials Collectors Right -In -Right -Out Only When Safety Warrants * Driveway cuts in sidewalk required ** Unless topography or traffic volumes require wider. STR-28.2 Parking Lots Plan cross access and unified circulation with adjacent parking lots. STR-29 PARKING LAYOUT STANDARD Parking Dimensions: A B C D E F (2) An le Stall Width Stall to Curb Aisle Width Curb Length Overhang 0 9 9 12 23 0 20 9 15 11 26.3 0.5 30 9 18 11 18 1 40 9 19 12 14 1 45 9 20 13 12.7 1.5 50 9 20 16 11.7 1.5 60 9 21 18 10A 1.5 70 9 21 19 9.6 1.5 80 9 20 24 9A 1.5 90 9 19 24 9 1.5 (1) On -site (Private) parking is referenced under Chapter 17.46 of the Anacortes Municipal Code. (31 STREET STANDARDS NOVEMBER 2018 2. Subgrade Support — A representative value for the stiffness of the native material on which the road will be built. This value shall be shall be accepted by the City of Anacortes Public Works Director. 3. Analysis — A procedure for establishing the surfacing depth required fora given traffic loading and subgrade resilient modulus. This procedure shall be approved by the City of Anacortes Public Works Director. Once pre -approved procedure is the use of the "Guide for the Design of Pavement Structures", 1993, or current version of AASHTO. STR-15.2 Minimum Thickness ■ As an alternative to the thickness computed by the design procedure, the minimum thickness of in -place, compacted_ surfacing_ of all _Public Streets shall be as follows: 'Minimum Structural Requirements Over Well Drained, Stable, Compacted Subgrade 3-inches Class B Asphalt Concrete Arterials and Adjacent Shoulders Pavement over 34ches Crushed Surfacing Top Course or Asphalt Treated Base over 8 inches Gravel Borrow 3 inches Class B Asphalt Concrete Non -arterials and Adjacent Shoulders Pavement over 3 inches Crushed Surfacing Top Course or Asphalt Treated Base over 6 inches Gravel Borrow Concrete Sidewalk Adjacent to Vertical 4 inches Portland Cement Concrete over Curb 4 inches gravel base Concrete Sidewalk Adjacent to Rolled 6 inches Portland Cement Concrete over Curb and Driveway Sections 4 inches gravel borrow **Non -Motorized Bike/Pedestrian Paths 2 inches Class B Asphalt Concrete and Access Roads Pavement over 4 inches Crushed Surfacing Top Course 2 inches Asphalt over 2 inches Crushed Alley Surfacing Top Course or Asphalt Treated Base over 6 inches Gravel Borrow * The City may require enhanced roadway sections designed with a 40-year life and a 2 percent growth factor based on an analysis of the load -bearing capacity of soils and the traffic carrying requirements. ** Where a pedestrian path is incorporated into the road shoulder, use the road shoulder standard. STR-15.3 Additional Requirements ■ All Plan submittals shall be accompanied by the soils and traffic analysis on which the design was based. All minimum surfacing requirements assumed are acceptable, well -drained, stable, compacted subgrade. ■ Additional measures will be required if evidence exists of unstable subgrade. In all cases, the total base thickness, including crushed surfacing base course or STREET STANDARDS NOVEMBER 2018 At bus stops, provide a landing pad for wheelchair operations at least 9 feet deep and 15 feet wide. Design and construct driveways and sidewalks at the same time. STR-12 NON -MOTORIZED PATHS AND ACCESS ROADS Minimum Width Maximum Grade Minimum Curb Radii Non -motorized bike/pedestrian path *103 15% 10' Maintenance Access Road 12' 15% 25' Public Access Easement or Tract 153 * The City may allow sections less than 10 feet wide to accommodate topographic constraints. STR-13 PUBLIC ACCESS EASEMENTS To facilitate pedestrian travel to and between neighborhoods, schools, shopping areas, transit facilities, or other activity centers, the City may require dedication of an improved public access easement or tract consisting of sidewalks, or non -motorized bike/pedestrian paths, and diverters or bollards. STR-14 BOLLARDS To prevent motor vehicle access to an easement, tract, or path, the City may require installation of a fine of bollards. In that case, install a fixed bollard on each side of the traveled way. Install removable, locking bollards across the traveled way to allow passage of maintenance and emergency vehicles. Install one bollard on the centerline. Maintain maximum spacing of 4 feet on center. STPA 5 ROADWAY STRUCTURAL REQUIREMENTS Low Impact Development and Design will take priority over all subsections in STR-15. For New Development and Redevelopment, each project will be required to implement Low Impact Development Guidelines. STR-15.1 Design A pavement surfacing design procedure shall be performed for all new and reconstructed Public Roads within City Limits. A roadway section designed with a 40- year life and a 2 percent growth factor based on an analysis of the load -bearing capacity of soils and traffic carrying requirements shall be used. The design procedure shall be approved by the City of Anacortes Public Works Director and shall consider the following: 1. Traffic Loading — An estimate of number of types of loadings the roadway will carry for the design life. This estimate of loading shall be established and accepted by the City of Anacortes Public Works Director. UTILITY FRANCHISE CONTACT LIST A. Comcast Cable Casey Jones, New Construction Cell: 425.508.7335 Fax: 360, 527, 8302 E-mail: casey jones(a.cable.comcast.com B. Comcast Cable Bill Inama, Construction Maintenance Cell: 360.815.6354 Fax: 360, 527, 8302 E-mail: bill_inama@cable.comcast.com C. Cascade Natural Gas Ted McCammant Office: 360.336.3842 Cell: 360.708.4689 f ax: 360.336-,2564 E-mail: ted.mccammant(o),cngc.com D. Cascade Natural Gas Jim Hobbs Office: 360.336.3911 Cell: 360.941,0499 Fax: 360.336,2564 E-mail: James.hobbs@cngc.com E. PSE/Intolight Lisa Kinney, Account Sales Manager Office: (425) 516-5432 E-mail: Lisa.kinney@pse.com F. Puget Sound Energy Jane Major, Municipal Construction Planner Office: 360.766.5571 Cell: 360.791,2748 E-mail: jane.major@pse.com G. Frontier Communications Company Lawrence Bogues, Construction Office: 360.354.1755 Cell: 360.395,8430 H. Frontier Communications Company Bret Murdock, Engineer Office: 360.707.0641 Cell: 425,417.7085 Fax: E-mail: bret.t.murdockaftr.com ANACORTES PUBLIC WORKS DEPARTMENT Steven Lange, Project Manager P.O. BOX 547, ANACORTES, WA 98221 PH(360) 293-1920 E-MAIL: stevel@cityofanacortes.org FAX(360) 293-1938 Review Summary 1 Date: October 16, 2019 To: Dave Oicles (Permittin and Rob Frisinger (Plans Examiner) From: Steven Lange 7 Subject: Public Works Engineering Site and Drainage Review for 3 .g West 2nd Street cc: Eric Shjarback, Kevin Cricchio A review of the Building Permit documents and Drainage Report was completed on October 16, 2019, Note: New subdivisions codes went into effect on August 5, 2019. This is a change since the Public Works write up of June 25, 2019. The new subdivision codes take precedent over any Code References or requirements from the DRG meeting write up. Site Plan: (Erosion and Sedimention Plan) 1. Site plan needs to identify the location of the existing improvements relative to the actual property lines. 2. Information provided in Minimum Requirement 2 needs to be shown on the Erosion and Sedimentation Plan, 3. Pedestrian improvements exist along West 2nd Street. 4. Show on the site plan the cut and fill areas? Retaining Walls? Slopes of hard surfaces, etc. 5. Sewer connection for this parcel will be at the sewer main in West 2nd Street. Site plan needs to identify this work. 6. Existing driveway approach will need to be removed and replaced with standard traffic curb and gutter and sidewalk. 7. No lot shall access from West 2nd Street if access from a Public Alley Way (AMC 19.53.030 — Driveways and access easements, Item 13.3). Alley access is required. 8. Refer to AMC 19.52.040(D) regarding Alley design standards. The alley shall be paved 20-feet in width and extend to the nearest improved Public Street. The existing alley way is platted at 164eet. This project will need to provide a 4- foot wide access easement to the City of Anacortes across the parcels (Adjacent to the Alley Way) within this project. a- � •Water •Wastewater •Streets •Storm Drainage •Engineering •Solid Waste • Transportation •Equipment •Capital Projects •Development Services q`�p 9. Refer to AMC 19.53,030 Driveway Cut widths. • For lot widths 504eet or greater, maximum width is 204eet. • For lot widths less than 504eet, maximum width is 12-feet. If the access is shared, then 204eet maximum width. Drainage Analysis • Use the updated Drainage Report format. Enclosed for the applicants use. • Project Description: Project has infiltration. Identify the BMPs used for both "Roofs" and "Other Hard Surfaces". • Project Description: Project needs to include the improvements to the Public Right -of -Way in the overall New and Replaced Hard Surface, which may trigger Minimum Requirements 1 through 9. • Project Description: Provide depth of ground water table. This information should be in the Soils -Analysis -in Appendix 2. • Project Description: What are the soils type? • Project Description: What is the Sediment Transport Score? • Existing Site Conditions Summary: • Site is currently vegetated with trees. • Site has an approximately Slope of 14.5%. • Developed Conditions Summary: • How will this project change the contours predevelopment vs post development? • What is proposed with the soils excavation? Hauled off -site to an approved disposal site? Stored for soils amended and backfill (BMP T5.13)? • Provide the Drainage Basin information. • Applicability Flow -Chart for Determining Requirements for New Development (Figure I-2.4.1) needs to be completed. • Applicability Flow -Chart (Figure 1-2.4.2) can be removed. • Applicability Flow -Chart (Figure 1-2.5.1) can be removed. • Minimum Requirement 1: Needs to be completed. • Minimum Requirement 2: The information provided in Minimum Requirement 2 needs to match the Erosion and Sedimentation Plan. • Identify the address of the site and who prepared the responses to Minimum Requirement 2. • Element 1: Agreed. • Element 2: Agreed. Although, will deliveries, concrete pours be done via the alley way? Or off of West 2nd Street? • Element 3: This item is intended for during construction. Revise to include • Water •Wastewater •Streets •Storm Drainage •Engineering •Solid Waste • Transportation •Equipment •Capital Projects •Development Services • BMP C101 — Preserving Natural Vegetation • BMP C235 — Wattles • What is proposed to protect flows towards West 2"d Street? • Element 4: What about the use of BMP C241 Temporary Sediment Pond? The site has infiltration potential? A few sites around town are utilizing tanks on trailers and pumping into the tank to settle sediment before releasing off - site. • Element 5: The use of BMP C233 Silt Fence would be useful at the north end of the project site • Element 6: No response. Site has a 14.5% slope. It has yet to be determined if this site is a High Sediment Transport Site and the applicant has not identified a construction schedule • Element 7: Need to complete. • Element 8: Need to complete. • Element 9: Need to complete. Identify the location of BMP C154 Concrete Washout Area and identify that the Contractor will have a Spill Prevention Kit on -site and accessible by all employees and subcontractors at all times. • Element 10: Need to complete. • Element 11: Need to complete. Identify that the property owner and contractor will be maintaining the BMPs on -site. Additionally, the property owner and contractor will be submitting weekly Erosion and Sedimentation Controls to the Building Department. • Element 12: Depending on the Square Footage of New and Hard Replaced Surface, the project may trigger Minimum Requirements 1 through 9, therefore requiring a Certified Erosion Control Specialist. • Element 13: This will be determined by the Feasible BMP in Minimum Requirement 5. • Preparer needs to sign and date • Minimum Requirement 3: Response is provided in the new revised drainage report format. • Minimum Requirement 4: Need to complete. • Minimum Requirement 5: • Project is not Flow -Control Exempt, therefore the project needs to do List #1. • BMP T5.13 Post Construction Soils. Requirement is provided in the new revised drainage format. • List #1 is not completed. Need to complete. • Appendix 1: Not provided. • Appendix 2: Not provided. • Appendix 3: Response is provided in the new revised drainage report format. • Appendix 4: Not completed. City reviewed and provided the information. • Water •Wastewater •Streets •Storm Drainage •Engineering •Solid Waste • Transportation •Equipment •Capital Projects •Development Services • Appendix 5: Not provided. • Appendix 6: Not provided. • Appendix 7: Will be determined on the BMP used. • Water •Wastewater •Streets •Storm Drainage •Engineering •Solid Waste • Transportation •Equipment •Capital Projects •Development Services Storm Water Drainage Report Minimum Requirements 1 through 5 MinIN imum Requirement 1 through 9 ENGINEERING DEPARTMENT 904 6th Street Anacortes, WA 98221 Official Use Only: (Information to Inspectors) Required Storm Water Facility and other related requi Project Address: 3� O�[ W Z''''� S 1 Parcel Number: P 154 1(Dy Permit Number: 5.'(;)-201C(- 06t1 www.anacorteswa.gov Submittal Date: [xj • 24• Iq Revision Number: Reviewer: Sm a�j Acceptance Date (COA): FRONT OF REPORT: 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 1: Minimum Requirement #1 — Preparation of Stormwater Site Plans o TAB 2: Minimum Requirement #2 — Construction Stormwater Pollution Prevention (SWPP) o TAB 3: Minimum Requirement #3 — Source Control of Pollution o TAB 4: Minimum Requirement #4 — Preservation of Natural Drainage Systems and Outfalls o TAB 5: Minimum Requirement #5 — On -site Stormwater Managements I Er—TA4IR-9m Mi�,;,-r,i;,;, Rect, iramPnt +fC� n o,-�fian �nli n�nin�� 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 - - InfornTation. - Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Project Description and Summary: Summary Table ExistingProposed Development Type L%ir lcx�TlaL Number of Lots 1 ► Lot Acreage in SF "lSt�o 5F 151x� SF Soil Type(s) G Site Sediment Transport Score (Hi h\Low) 1� r 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) v•� INc.H\my. Impervious Surface (on -site) 4,'11�tys 54FL Impervious Surface (off -site) emp New and Replaced Hard Surface Total (SF) All )S Sf Lot Coverage (Percentage) X 9 1 7 BMP (Required Minimum Requirement 5) BMP T5.13 Post Construction Soils "M99 Water Quality Method (Minimum Requirement 6) ze Water Quantity Method (Minimum Requirement 7) Plfay 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 ) ltE SwPe � 14•S07o Developed Conditions Summary: (Additionally, to be shown on the site plan. Identify cut and fill areas, proposed slopes of all hard surfaces, proposed contours) d- a� J — 0 cif ¢u 4.e.' e 4 K e����f•e� ac.-ck u�?�. 5, �ma A-.SGi Drainage Basin (2007 Storm Comp Plan — City website\publicworks\engineering\comprehensive plans): What Drainage Basin are you in? Identify any downstream drainage issues (Storm Comp Plan: If so, describe: Complete the Applicability Requirements —Flow Chart (Figure I-2.4.1 Attached, Figure I-2.4.2 Attached and Figure I-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 have a.546 cr more of existing impervious ,average" No C��es the project�es.�I; tr 5 GJC' square feeC, of No realer, of new po us laced hard surface area' Yes All Minimum Requirements apply to the new and replaced hard surfaces and converted vegetation areas_ DEPARTMENTi�F :_?ate of wasn�ngton Yes See ReLde':elopment klmirru Requirements and Flow Chart (Figure I-2.4.2). Yes Goes the project �n�•ert'� acres or more of vegetation to convert 2.F acres or more ofi natve vegetation to pasture? Minimum Requirements �#1 through #5 apply to the new and replaced hard surfaces and the land disturbed. No Games the project result in 2.00a square feet, or greater, of new plus replaced hard surface area' Does the Froje�_t have land C istU" IJing actlYt'Jes ©f 1 ,����� es scuare feet or greater'' Y Minimum Requirement #2 applies_ Fic_�uro I-2.�_ Flo��r t ih��it for C�otorr��ininc� Roc�uirer�iont� for Now Dovolopmont rnita�or a? IlaDlltr}, aid dlsGalm�r. version uate: �ctoaer i, �u iy rrevious version uate: repruary zu, zu iy Does the proyeCE result in 2,000 square'Tee , or more, of new plus replaced hard surf;cvi area^ OR Does the land disturbing activity total r ,000 square feet or greater? [iC4 I Minimum Requirements #a through #5 apply to the new and replaced hard surfaces and the land disturbed. No Minimum Requirement #2 applies. Does the project add 5.00Q square feet or more of new hard surfaces? Con.'ert 3a acres or more of wegetation to dawn or landscaped areas? OR Yes All Minimum Requirements apply ��} pA Is thi's a road to the new hard surfaces and the related project? N O converted vegetation areas. Yes Does the project add 5,0D0 square feet or more of new hard surfaces? Yes No Is the total of new plus replaced hard surfaces Do the new hard IV 5,000 square feet or more, surfaces add 54)% or NO No additional No AND more to the existing does the value of the proposed improvements hard surfaces within requirements-does including interior improvements - exceed the project limits? 50% of the assessed value (or replacement value) of the existing site Onprovements? Yes DEPARTMENT OF :Mate or Wasni�c��� All Minimum Requirements apply to the new and replaced hard surfaces and converted vegetation areas_ Figure I-2.4.2 Yes Flow Chart far L7etermirling Requirements far Redevelopment rnitaCor aT Itaflllltj, and dlsclaNrer. REl'kSE�� ..tune �� 1 vetswn vate. v�w�er i, w ry rrevt�u5 v�rst�n vote. re�ruary w, w ty ✓Oes Irre DrDeCt ClWrjn;t A. 10 Floe' 1,Ditrol ExeTDt Wa1Efs i.Der rdiIr mum RequlreTent ;MRI *7)f Yes ?_CU IRED: IrnpleT=nt 2r.e talowMg 6MP5 ,:rere feaslnle: • 6MP T5.93: Fast-Cflnstnryna�n poll aualTy and Depth • 6MP TSACA, B. or C: OowrSVout Full mritratlor, Dowrapout Dlsperson Sysivrs, or Perforated Stub-naut •Connectons • 6MP T5.11 or T5.12: Corceitrated Flow Olsperson or Gheet Flow DIspeTsor NOT REQUIRED: AVh�euernent otthe LID BMPs Irn Lst �r1 Or Ust �2_ I;iy 2hrg Dro eci be'ielDDer CfIDDSe t0 frleet Me LID Per1DrT3nCe Slandard? REQu�IRE�.: For eat suilaae, corn+Der the @VIPs Ir the order s9eD n Llst #t for rat t)Te of surface. Use the nrst @MP that S cDnsdrred reasibe. NUT REQU6}�.EO: Acts e'.ernent of die LID PeftoTmarce Standard, Yes Yes REQUIRED: Meet 2r►e U'D Pefforrance Standard through the use aT�@MP�;sI In the 2014 SWIVUl" 01 excem for Ra n Garde'Is Of* use of boretenttor Is acceplaDle;1. REQUIRED for ProecLs Trigperna MR Pt-3' A�DIy @hIP T5.13 Pori Consiruci►Dn Dol Quality and DepM. NOT REQUIRED: Apply 19 the EMPs 1 List �r9 ai ust x2 DEPARTAAENT OF Mate otr Washington Yes No Does me pro�ec't trigger only MRS 41- �5? (Per Figure 3.2 or Fgure 3.3 :n Appendix t of the 2013-2016 .VWJ1 Phase 11 Permit a Phase I Permt:;�. NO the argect triggered only MR;#21 No addttlor al requIrernenfs only MRS Is the proJFct Inside the USA? Yes 1 � Did 1r�e DrLS eGt de'ielopef ocise to them UIS LIG Pef'ormaloe �t3rlarV No REDUGR;=D:: For eacfi surface, etmsldertt►e @MPS Ir the Drier rSted In List #2 TDr rat t)'Ae of Surface. Use 2h� TIM BMP that Is o�nslclered teasble. tti•t]T REQUIRED: AchlE�'eT=nt of Tt�e LUD Perrormance stardard No IS the pro4ect on 3 parC� el af5aofes arz_iIn - Yes REQUIREIJ: Meet the LID Perfonrance %J and through pie use of air @MP(sI In the 14 swMM W W except for Rain Gardens Itne use of Bloretenvon S acceptable tt toff pro)ect can't meet fire LID P®rforrnanes Standard. It must s"k and be granted an exceptionNatrlance. REQUIRED: ApDl)' 9AIP T5.1' Post-Corstrurtton Sole Qua �. and Depth. tiOT REQUIRED: AFoDl)lne Lh- @hlPs In Llst �1 or L sI =_ 'Rgcomme-hied I,)Ecnlagy ror pro�ew^ts trggeftng MRs �1 -;#�. FIU�rr c_:h��rt fir Dert�rrliir7inq LID 1�9R �5 Rec�url ir�i�nt4� rnitator of IlaDllttj•, and d16GahT'r. Rei sed Jure �0 � version vale: �ctoper i , �u i y rrevlous version uate: repruary �u, �u i y TAB 1 (MINIMUM REQUIREMENT #1) • 1-2.5.1 Minimum Requirement #1 — Prepare a Stormwater Site Plan - 1.3 — Preparation of a Stormwater Site Plan - 1.3.1 — Stormwater Site Plans: Step -by -Step Note: The level of detail needed for each step depends upon the project size. Provide a narrative description of each step. 1-3.1.1 Step 1 -Site Analysis: Collect and Analyze Information on Existing Conditions Site analysis shall be submitted as part of the Existing Conditions Summary above. Part of the information in this step should be used to help prepare the Construction Stormwater Pollution Prevention Plan. Purpose of the Site Analysis is to provide for a Low Impact Development site design that is intended to compliment the predeveloped conditions of the site. 1.3.1.2 Step 2 - Prepare Preliminary Development Layout Based upon the analysis of existing site conditions, locate the buildings, roads, parking lots, landscaping features, on -site stormwater management BMP's, and preliminary location of stormwater treatment and retention/detention facilities for the proposed development. 1-3.1.3 Step 3 - Perfiorm Off -site Analysis (at Local Agency's Option): Use additional Sheets, if necessary, Ecology recommends that local governments require an off -site analysis for projects that add 5,000 SF or more of new hard surfaces, or convert 3/4 acres of vegetation to lawn or landscape areas, or convert 2.5 acres of forested area to pasture. Off -site analysis extends to %4 mile downstream of the project site. 1-3.1.4 -Determine Applicable Minimum Requirements Establish project size thresholds for the application of Minimum Requirements to new development and redevelopment projects. Figures 2.4.1 Attached and 2.4.2 Attached provide the same thresholds in a flow chart format. Based on the preliminary layout, determine whether Minimum Requirements #1 through #5 apply to the project; or, whether Minimum Requirements #1 through #9 apply. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Please note, that Minimum Requirement #1 through #5 may trigger additional Minimum Requirements, such as Flow Control, 1-3.1.5 Step 5 - Prepare a Permanent Stormwater Control Plan (Refer to this section of the Ecology Manual for requirements.) 1-3.1.6 Step 6 - Prepare a Construction Stormwater Pollution Prevention Plan (MR#2 — 13 Elements) Refer to Chapter 11-3 —Planning for a detailed description of each element. See also attached Tables 4.1.1 (Source Control BMP's by SWPPP Element) and Table 4.2.1 (Runoff Conveyance and Treatment BMP's by SWPPP Element). See attached 13 Elements of a SWPPP, please complete and attached 1-3.1.7 Step 7 - Complete the stormwater site plan The Stormwater Site Plan encompasses the entire submittal to the Local Agency with drainage review authority. Refer to this section of the Manual for further clarcation of each item and what is required. See below: • Project Overview • Existing Conons Summary • Off -site Analysis Report • Permanent Stormwater Control Plan • Construction Stormwater Pollution Prevention Plan • Special Reports and Studies • Other Permits • Operation and Maintenance Manual • Declaration of Covenant for Privately Maintained Flow Control and Treatment Facilities. (See attached Drainage BMP Maintenance Covenant BMP Agreement) • Declaration of Covenant for Privately Maintained On -site Stormwater BMP's (See attached Drainage BMP Maintenance Covenant BMP Agreement) • Bond Quantities Worksheet, if applicable Version Date: October 7, 2019 Previous Version Date: February 20, 2019 1-3.1.8 Step 8 - Check Compliance with all Applicable Minimum Requirements A Stormwater Site Plan as designed and implemented should specifically fulfill all Minimum Requirements applicable to the project. The Stormwater Site Plan should be reviewed to check that these requirements are satisfied. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 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, Version Date: October 7, 2019 Previous Version Date: February 20, 2019 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, Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Table 4.1.1 Source Control BMP'S by SWPPP Element Element#1 Element#2 Element#5 Element#6 Element#9 Element#11 Element#12 Element#13 BMP or Element Name Preserve Establish Stabilize Protect Control Maintain Manage the Protect Low Vegetation/Mark Construction Soils Slopes Pollutants BMPs Project Impact Clearincl Limits Access Development BMPC101: Preserving Natural Vegetation ✓ BMP C102: Buffer Zones ✓ ✓ BMP C103: High Visibility Plastic or Metal ✓ ✓ Fence BMP C105: Stabilized Construction ✓ Entrance / Exit 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: Polyacrylamide for Soil Erosion ✓ Protection BMP C130: Surface Roughening ✓ ✓ BMPC131: 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 ✓ Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Table 4.2.1 Runoff Conveyance and Treatment BMP's by SWPPP Element Elementr3 Bornont#4 ElementN6 men Elet## Ekmont i8 Elemrnt#9 Elermntrt0 Element a13 amp or klanwrd None Corurol Install Protract Pfotect Stabilize Control Control De- protect LWO flaw Ratas Slopes Drain Iron Is Channoks Pollutants watering I�act Controls Controls and Outlets ?erela roan! H OF C200: bi(arcept v Dike and Swale ✓ ✓ 9MP C2Dt: Grass-1 snod Charulels ✓ BMP C202: Chdnrxl Lining ✓ P C203: Vfttor Bars ✓ ✓ MP C204: Pips Slope Drains ✓ BMP C20& Subsurface prams ✓ BMP C20i: Level Sprtsder ✓ BMPC20T: Chock D m ✓ ✓ ✓ BMP C200: Triangular SBt 011w (fioots:d/e � Encased Check Darn) I BMP C209: Outlet Protection BMP C220: Storm Draln Inlet Protection• ✓ BMP C231: Brush Barrier ✓ j I ✓ BMP C232: Oravel Filter Berm ✓ BMP C233: Sits Fence ✓ V BMP C234: Vogeta W Strip ✓ ✓ BMP C23&* W3ttias ✓ BMP CM Vbgitetlre Filtration ✓ BMP C240: Sodtalant Trap ✓ BMP C241: Temporary Serfrinent Pond ✓ ✓ BMP C211& Conaftuction Stop Mwor Chrrr4csl Treatment ✓ ✓ BMP C251: Construction 8tonwwaler Flarmlon BMP C252: High pH Neutralization Using i I ✓ COZ SNIP CZS3: pH Control (or Hlgh pH 1Wtor ✓ Version Date: October 7, 2019 Previous Version Date: February 20, 2019 13 Elements of SWPPP (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 Deoartment, as well/as under Stormwater on the Engineering Division of Public Work's page. Owner Name: Brt?aN Sfrcact•I-4./t- Site Address: W - 156 p � Zvi,S - b(v Prepared By: 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. ❑ 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 proiect. 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. �+?� G!0( pcs� /lei-�•,�/ v�t,¢ccf/e� V.P!IE G t D 3 H i 1ti viZ P/*SfiG aw pefe%/ Aeetomac 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. a J)5 h ccwl !-cz fia�V&n e14 fry tccz/fir f 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. r ,S'�cir �aW rt o v 1. jarr fo*p C 2 3� v j,�a�r vetr ;i hf o*i _ t�✓trolG �s �aN�iCc�ilGCr w� `glrusf �ano�tCo'/'i 1 �o ��i+t� a S/m -✓ S..�d4c� vo, l-cr. 8"1,p C I Z o w po Pt� «Kd Pwr^' HINj S�� d � �,9' • 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. 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 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 Li tS abiTize soils atthed o t e s i e of re a o i ay or wee en i nee e� on the weather Version Date: October 7, 2019 Previous Version Date: February 20, 2019 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. - tjPL4V G(ZJ KIA*$P1G COVmer/vyy 10/ CXCQ.lot r"CGI-SOj�.s. w/ - j3 kn p G 235 40AT w r,,,oc m5 Qard f2l2tM PwfrivW Vr LOP fmc .� t.� 6EC- - 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-year, 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. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 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). ❑ 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. 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. 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 proceaures. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 ❑ 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 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. 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. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 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 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. 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. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 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. Applicant Signature Date Version Date: October 7, 2019 Previous Version Date: February 20, 2019 TAB 3 (MINIMUM REQUIREMENT #3) • 1-2.5.3 Minimum Requirement #3 — Source Control of Pollution All known, available and reasonable source control BMP's must be applied to all projects. Source control BMP's must be selected, designed, maintained according to the reference Ecology Manual. The intent of source control BMP's is to prevent stormwater from coming in contact with pollutants. They are a cost-effective means of reducing pollutants in stormwater, and, therefore, should be considered in all projects. Single Family Residential Construction Projects and Residential Subdivisions are Exempt from this Minimum Requirement All Commercial Properties, Industrial Properties, and Multi -Family Properties, Boatyards, Sand and Gravel Mining Opertations are required to comply with this Minimum Requirement. Refer to Chapter IV-2.1 Applicable (Mandatory) Operationsal Source Control BMP's Version Date: October 7, 2019 Previous Version Date: February 20, 2019 TAB 4 (MINIMUM REQUIREMENT #4) • Minimum Requirement 44 — Preservation of Natural Drainage Systems and Outfalls Natural drainage patterns shall be maintained and discharges from the project shall occur at the natural location, to maximum extent practicable. The manner by which runoff is discharged from the project site must not cause a significant adverse impact to downstream receiving waters and down gradient properties. All outfalls require energy dissipation. The objective is to preserve and utilize drainage systems to the fullest extent because of the multiple stormwater benefits these systems provide; and to prevent erosion at the downstream of the discharge location. Refer to the reference manual for supplemental guidelines and additional information under this section. Will this project disturb the Natural Drainage System or Outfall of the project Site? Yes\No. If yes, refer to section 1.2.5.4 for Supplemental Guidelines for additional information. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 TAB 5 (MINIMUM REQUIREMENT #5) • Minimum Requirement #5 — On -site Stormwater Management Project thresholds that trigger Minimum Requirements #1 through #5, shall utilize the On -site Stormwater Management BMP's from List #1 for all surfaces within each type of surface in List #1; or, Demonstrate compliance with the LID Performance Standard. Projects selecting this option cannot use Rain Gardens. They may choose to use Bioretention BMP 's as described in Chapter V-7 — Infiltration and Bioretention Treatment Facilities to achieve the LID Performance Standard. Refer to this section of the reference Manual for all Feasibility or Infeasibility Criteria for List #1 and List #2. Is this project Flow Control Exempt? (Yes\No) (See Appendix 1-E: Flow Control -Exempt Surface Water). If yes, provide reasoning from the applicability section of 1-2.5.7 Minimum Requirement #7: Flow Control). If No, then the project triggers Minimum Requirement #7 (1-2.5.7) and possibly Minimum Requirement #8 (1-2.5.8). If the project is Flow Control Exempt, select from the list below (Skip List 1 and List 2). o BMP T5.13 Post Construction Soils Quality and Depth o BMP T5.10A: Downspout Full Infiltration, or; o BMP T5.1013 Downspout Dispersion Systems, or; o BMP T5.10C: Performated Stub -out Connections, or; o BMP T5.11 Concentrated Flow Dispersion, or; o BMP T5.12 Sheet Flow Dispersion Projects triggering only Minimum Requirements 1 through 5, shall either: A. Use On -site Stormwater Management BMP's from List #1 for all surfaces within each type of surface in List #17 or; B. Demonstrate compliance with the LID Performance Standard. Projects selecting this option cannot use Rain Gardens. They may choose to use Bioretention BMP's as described in Chapter V-7 Infiltration and Bioretention Treatments Facilities to achieve the LID Performance Standard. If a project will utilize the LID Performance Standard, then provide and attach reports and calculations. tor water discharges shall match developed discharge durations to pre -developed durations for the range of pre -developed discharge rates from 8% of the 2-year peak flow to 50% of the 2-year peak flow. Refer to the Standard Flow Control Requirement section in Minimum Requirement 7 for information abou the assignment of the pre -developed conditions. Project sites that mus also meet Minimum Requirement 7 — Flow Control, must match flow durations between 8% of the 2-year flow through the full 50 year flow. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Projects triggering Minimum Requirements 1 through 9, must meet the requirements in 1-2.5.5 Minimum Requirement 5 — On -site Stormwater Management. o Refer to Table I-2.5.1 On -site Stormwater Management Requirements for Projects Triggering Minimum Requirements 1 through 9 in the Department of Ecology Manual. All sites are required to utilize BMP T5.13 —Post Construction Soil Quality and Depth. For each surface, consider the BMP's in the order listed for that type of surface. Use the first BMP that is considered feasible. No other on -site Stormwater Management BMP is necessary for that surface. Feasiblity shall be determined by evaluation against: 1. Design criteria, limitations and infeasiblity criteria identified for each BMP in this manual, and; 2. Competing needs criteria listed in Chapter V-5 — On -site Stormwater Management. Lawn and Landscaped Area: • BMP T5.13: Post -Construction Soil Quality and Depth. (Attach Detail in Report) Refer to this site for requirements and specifications. All projects are required to utilize this BMP http://www.soilsforsalmon.org/pdf/Soil BMP Manual.pdf See Appendix 3 for the "Model Soil Management Plan for BMP T5.13" to be submitted with Drainage Report and Application Material. An alternate document acceptable to the City of Anacortes is a Test Report provided by the Soils Supplier that idenes the soils to be used meet the speccations 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. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 List #1 - Project Triggering Minimum Requirement 1 through 5 For each surface, consider the BMPs in the order listed for that type of surface. Use the first BMP that is considered feasible. No ther On -site Stormwater Management BMP is necessary for that surface. Provide feasible detail under each BMP with maintenance and operations specifications in Minimum Requirement 5. Roofs: List #1 1. BMP T5.30: Full Dispersion Feasible\Infeasible If infeasible, explain the criteria: Or, T5.10A: Downspout Full Infiltration Feasible\Infeasible If infeasible, explain the criteria: L BMP T5.14A: Rain Gardens Feasible\Infeasible If infeasible, explain the criteria: Or, BMP T7.30: Bioretention Cells, Swales, and Planter Boxes Feasible\Infeasible If infeasible, explain the criteria: 3. BMP T5.10B: Downspout Dispersion Systems Feasible\Infeasible If infeasible, explain the criteria: 4. BMP T5.10C: Perforated Stub -out Connections Feasible\Infeasible If infeasible, explain the criteria: Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Other Hard Surfaces. List #1 1. BMP 1 .5.30 Full Dispersion Feasible\Infeasible If infeasible, explain the criteria: L BMP T5.15: Permeable Pavements Feasible\Infeasible If infeasible, explain the criteria: Or, BMP T.14.A: Rain Gardens Feasible\Infeasible If infeasible, explain the criteria: Or, BMP T7.30: Biorention Cells, Swales and Planter Boxes Feasible\Infeasible If infeasible, explain the criteria: 3. BMP T5.12: Sheet Flow Dispersion Feasible\Infeasible If infeasible, explain the criteria: Or, BMP T5.11: Concentrated Flow Dispersion Feasible\Infeasible If infeasible, explain the criteria: Applicant Signature Date Version Date: October 7, 2019 Previous Version Date: February 20, 2019 List #2 — Protect Triggering Minimum Requirement 1 through 9 For each surface, consider the BMPs in the order listed for that type of surface. use the first BMP that is considered feasible. No ther On -site Stormwater Management BMP is necessary for that surface. Provide feasible detail under each BMP with maintenance and operations specifications in Minimum Requirement 5. Roofs: List #2 1. BMP T5.30: Full Dispersion Feasible\Infeasible If infeasible, explain the criteria: Or, T5.10A: Downspout Full Infiltration Feasible\Infeasible If infeasible, explain the criteria: 2. BMP T7.30: Biorention Cells, Swales and Planter Boxes Feasible\Infeasible If infeasible, explain the criteria: 3. BMP T5.10B: Downspout Dispersion Systems Feasible\Infeasible If infeasible, explain the criteria: 4. BMP T5.10C: Perforated Stub -out Connections Feasible\Infeasible If infeasible, explain the criteria: Version Date: October 7, 2019 Previous Version Date: February 20, 2019 Other Hard Surfaces: List #2 1. BMP T.5.30 Full Dispersion Feasible\Infeasible If infeasible, explain the criteria: 2. BMP T5.15: Permeable Pavements Feasible\Infeasible If infeasible, explain the criteria: 3. BMP T7.30: Biorention Cells, Swales and Planter Boxes Feasible\Infeasible If infeasible, explain the criteria: 4. BMP T5.12: Sheet Flow Dispersion Feasible\Infeasible If infeasible, explain the criteria: Or, BMP T5.11: Concentrated Flow Dispersion Feasible\Infeasible If infeasible, explain the criteria: Applicant Signature Date Version Date: October 7, 2019 Previous Version Date: February 20, 2019 TAB 6 — (MINUMUM REQUIREMENT 6 - RUNOFF TREATMENT) Refer to 1.2.5.E and provide the required information for this Minimum Requirement. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 TAB 7 — (MINUMUM REQUIREMENT 7 — FLOW CONTROL) Refer to 1.2.5.7 and provide the required information for this Minimum Requirement. Version Date: October 7, 2019 Previous Version Date: February 20, 2019 TAB 8 — (MINUMUM REQUIREMENT 8 — WETLAND PROTECTION) Refer to 1.2.5.8 and provide the required information for this Minimum Requirement, Version Date: October 7, 2019 Previous Version Date: February 20, 2019 TAB 9 — (MINUMUM REQUIREMENT 9 — OPERATION AND MAINTENANCE) Refer to 1.2.5.9 and provide the required information for this Minimum Requirement. 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 APPENDIX 2 — Soils Anaylsis (Volume 1, Chapter 3.1.1) Version Date: October 7, 2019 Previous Version Date: February 20, 2019 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, 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 It. only site address and permit number on additional pages. Site Address / Lot No.: Permit Type: Permit Number: Permit Holder: Phone: Mailing Address: Contact Person: Phone: Plan Prepared By: ATTACHMENTS REQUIRED (Check off required items that are attached to this plan) Site Plan showing, to scale: Areas of undisturbed native vegetation (no amendment required) New planting beds and turf areas (amendment required) TvDc of soil improvement proposed for each area Soil test results (required if proposing custom amendment rates) Product test results for proposed 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: Topsoil import X 3.1 (conversion factor, inches to cubic yards) = cu. yards per 1,000 sq. ft. PRODUCT: 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 Amend X 31 = 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 (complete on page 1 only, totaling all areas/pages in this Plan) ❑ Product #1: ❑Quantity: cu. yds. ❑ Test Results: _ %organic matter C:N ratio <25:1 (except mulch, or <35:1 for native plants) "stable" (yes/no) ❑ Product #2: ❑ Quantity: cu. yds. ❑ Test Results: % organic matter C:N ratio <25:1 (except mulch, or <35:1 for native plants) "stable" (yes/no) ❑ Product #3: ❑Quantity: cu. yds. ❑ Test Results: % organic matter C:N ratio <25:1 (except mulch, or <35:1 for native plants) "stable" (ves/no) 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; ii. Lakes; iHe 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. He Runoff from the site is tight -lined to the feature or flows to the feature through a channel or ditch. august 1, 2013, Modified January 16, 2015 Potentiai Page 1 of 3 Appendix 7- Determio�if�g Sedirnee�t Carnage 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: We 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 Transaort 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 Transport Rating <100 Low ❑ 100 High A high transport rating indicates a higher risk that the site will generate sediment contaminated runoffI Construction Site Sediment Transport Potential Worksheet A. Existing slope of site (average, weighted by aerial extent): Points 2% or less .110 >2-5%.............................................................................................. 5 >10 go, 15%....................................................................................... 0 >15%............................................................................................. 50 B. Site Area to be cleared and/or araded: <5,000 sq. ft................................................................................... 0 57000 sq. ft. — 1 acre, I I I I I I I I I I 1 0 1 0 0 w F a * 0 * I a a 9 a a a a a a 0 N a * 0 a . . . a * , * * , a A a a 4 N , , 0 a a a a a . . . . a K 0 >1 acres......................................................................4.......a........50 C. Quantity of cut and/or fill on site: <500 cubic yards......................................................................... . 0 500 — 5,000 cubic yards................................................................... >5)000 — 10,000 cubic yards........................................................10 >107000 — 20,000 cubic yards......................................................25 >20,000 cubic yards.....................................................................40 D. Runoff potential of predominant soils (Natural Resources Conservation Service): Hydrologic soilgroup A, I I I I I I I I I I I I I I I v * P 1 0 1 1 1 4 0 F 4 a a v 0 a a a A a 0 0 a * w 0 0 0 a a a , a a . . . . . a . . . . . . . a a 4 . . . . . . . . . . . . . . . . . 0 Hydrologic soil group B.................................................................1 Hydrologic soil group C...............................................................20 Hydrologic soil group D................................................................ E. Erosion Potential of predominant soils (Unified Classification System): GW, GP, SW, SPsoils..........................................................................................0 Dual classifications (GW-GM, GP-G GW-GC, GP -GC, SW-SM, SW -SC, SP-SM, SP-SC) .......................... © GC, S�VI SC soils.................................................................20 ML, CL, MH, CH soils...................................................................40 F. Surface or Groundwater entering site identified and interceptedl: Yes. I a I I a I I I a a a I I I . . . . . . . . . . . . . . . I I I I I I I I I I I I I I I I I I I I I I I I I K I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I P 4 P I I I No............................................................................................... 25 G. Depth of cut or height of fill >10 feet: Yes, I I I F 1 4 0 1 4 1 0 1 1 0 A a a a 0 * a 0 0 a a a a 0 a . . . . . . . . . . . . . . . I I I I K I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 1 125 No......................................................................................................... 0Q H. Clearing and grading will occur in the wet season (October 1 — May 1): Yes 50 No.......................................................................................................... 0 TOTAL POINTS............................................................................................. �� � Cl-���4 1 If no surface or groundwater enters site, give 0 points. APPENDIX 5 — Site Plan with all applicable information (Minimum Size 11x17 at a legible scale) APPENDIX 6 — Documented Site Photos (Show all directions of the site, including frontage) (Insert Photo Here) Location: Description of the photo: Photo taken by: APPENDIX 7 — Drainage BMP Facility Maintenance Covenant Note: To be recorded prior to: 1) Temporary Certificate of Occupancy; 2) Final Certificate of Occupancy, and or; 3) Final Acceptance of the project. This is Covenant is required for any Permanent Stormwater Facy constructed on a project site. The applicant should work with the the City of Anacortes Engineering Department on formalizing the document for recording. I �, rn K�, O lam: � �� �'� K1; �' �' �i ------------�-�-�oo,o -- I � 13MP C103-NIGH VIZ PENCE � I I � � " 5117 r6,QQ'i 1 OI 7 T I LAWN i I I A OP t715TURf3ANCE - � I I I I � ��I � � 2h'� VI;RNANGS TYP. `� I 2h' - - - - - I � �� /� / � �� ,. �� � ��/ z � % ;� f� �' ;% � �� i �I � ' / N�, _ OI �I �; Ni NiM -' � -� -� 'rim I ----y ¢----i-----=-----�-------�-----i---- nI5PER510N LAWN ALL t70WNSP0Uf5 TO SPLASH I �1`�� Q G � i PLOW PAS � 13LOCK5 TO SI�Er PLOW ONTO PROPEkfYTYP. 6Nll' C236 ! � Ain Y ,COVE I - - - - - � LA511C I C 6 CI23) �' i - , / AN OA�nEf? i i � � .' , �'� i " � i,� i;� �/ � W� W I �� � i %� � i /�� �� j � � ; � j `� �,,'�,; ' SEWER r0 �XI511NG � 6 �235) �' � PROPo n NooKUP Ar sTRE�r I �/ i � � � DECK i�� . � i _ i �. i % . /PROP05Et7 , COVR�17 ENTRY ��;,'� 6' '.., J V � � � � % i� 11.E z /� �� � i / �, �hh0h05�b GAf��AG� `� PROPos�t7 fl � � � "CsC�EZEWAY � � fl � ! � � �� � i� � / i � � f � 9O�L � i / i,i i' i / �� i / �' �i i / i i �� i i� %i i" j COVIREl7 i7ECK ��0p05�n N0U5� pf;0pO5�b bt?IV� / f'A�KING �'C AMC' C0N51", �N1�ANC�) 6Mp CI / 5/W 5 W 5/W - _1 � I � OI � KAWN ^�I i Ste-' �'� � � 6MP C235- `�' STRAW WAt717L \ i I ! �I �20' PRONT f715PER510N _ _ � SETT3PLK PLOW PAIN 6MP C205 STRIP f7RAIN rO f3E PLACl;i7 Ar TRANSMON FROM '�'� f7RIV>; r0 5117EWALK. PLUME OUt�I-OW r0 SInEWALK r0 � EXI511NG CITY STORM PAIN \�--� \ � �-� ' � ` � ` � - LAWN --� 6MP C103-NIGH VIZ EENCE - _ � � v e i � LAWN �,� L�d, 1715PER� UT1LmE5 r0 EXISTING— _ -� mow/ w w w W / w _________________ �[����' ELOWPA1N NOOKUPSATSTREEr 51� / �pAl NAGS ��A�1 i��-io�-o�� s� r0 i `� - .1 - - _- Ip d �� _ , �I � SEP 2 �� � � �19 • N F, f'f;Of'OS�n IMf'�f;VI0U5 AP.�A: I. PROPOSEn HOUSE/ OVERHANGS: 2069 50, Fr. 2, 7KOpOSEn GARAGE/ OVERHANGS: 980 50. FT. 3, PROPO�n COVE�n HECK/ OVERHANGS: 3q4 50, FT. 4, PROPOSEn COVEREn ENTRY / OUERNANGS: 156 50. FT. 5. PROPOSEn COVEREb 6REEZEWAY /OVERHANGS: 168 SO. Ft. 6. PR01'OSEn nRIVE /PARKING /WALKWAYS: 1218 5O, P(, TO(PL PRGPO�n NEW= �IY35 SO. FT. IMPERVIOUS AREA �0'I" COV�f;AG�I I. PROPOSEn HOUSE/ OVERHANGS. 2069 50. FT, 2, PRGPOSEn GARAGE/ OVER>-IANGS: Y80 SO. FT 3. PROPOSEn COVEREn HECK/ OVERHANGS 3qh 50, Fr. �, PROPOSEn COVEREn ENTRY / OVERHANGS, 156 50, Fr. 5. PROPOSEn COVEREn 6l�EZEWAY / OVERHANGS: 168 SO. FT. 6, PROPOSEYJ nRIVE /PARKING / WN.KWAYS; 1218 SO. FT. Lor sly; �50o sa. Fr. +- TOTAL LOf COVERALE: 63,1 N01�5; I. ERosION coNTROL; BMP CIOI; PRESERVE NA111RN, VEGITA110N -PRESERVE AS MUCH NATURA, GRA55 AREA AS POSSIBLE nURING CONSiRUC110N FOR NATURAL ni5PER510N OF ANY UNEARTI�n SEnIMENr, 6MP C103 NIGH VIZ, PLASiIGOR METAL PENCE -INSTALL NIGH VIZ t'I.A511C FENCE ON SETBACK UNES AS SHOWN TO MARK Q.EARING LIMITS BMP CI05 STAtiILIZEn CONSTRUC110N ENTRANCE/EXIT -�INFORCE FRONT ANn REAR ACCESS W/ WASNEn GRAVEL UNTIL CONCRETE PARKING IS Esr/�f51-ISNEn 10 IMPROVE ON REnUCTION OF TRACK OUr PROM SITE. BMP CI23 PLASTIC COVERING -COVER EXCAVATEn SOIL IF LEFT UNATTENnEn FOR 48 NOLRS OR MORE W/IMPERMEABLE PLASTIC W/ BMP C235 STRAW WAnnLES BORnERING PLASTIC r0 SLOW WATER nISPER510N ro sl�Er Flow ONro sITE ALL nlREcrloNs BMP CIS�F CONCRETE NANf71-ING ALL CONCRETE CLEANOUf 10 6E CONTAINEn INnER GARAGE SLAB AS SNOVVN TO BE COVEREn VJlili FINISH �,AS BMP C235 STRAW WATTLES INSTALL STAKEn 51RAW WATTLES ON LOWER EnGE OF PROPERTY AS SHOWN W/ SEDIMENT TRAPS ON EnGES OF PROPO�n nRNE/CONSTRUCTION ENTRANCE. 6MP C205 SUBSII�PCE nRA1N INSTALL STRIP nRAIN AT BASE OF nRIVE AS SiOWN AS SOON A5 POSSIBLE t0 CATQ-15rORM RUNOFF, EXPOSEn PIPE nRNN TO EXISTING CATCH BA51N ON SECONn STREETPER C11Y REQUEST Z. LOr AVE, ELEVATION II'8", 6UILf71NG IZ' IO" OVER AVE ELEV, W/ 35' MAX I�IGNT RESTRICTION 3. ALL nOWN SPOUTS TO SPLA�I BLOCKS TO SHEET FLOW ONTO PROPERLY BMP C236 VEGETATIVE FILTRATION TER I 4, 51� SETBACKS TOFAL OF 15' MIN,S' MAX 10' PER SInE. �N � 5. AYJI7RE55: XXXX WEST 2Nn ST ANPGORfES, WA 6. PARCEL# PI3<1168 CONST, I 1, nRA1NPGE t�ESIGNEn BY CESCL JUS11N SOU-E, In# ECO-3-830191Y DANCE 8. IF ANY 6MI'S ARE NON -PERFORMING HIRING CONSTRUC110N PROCESS REASONABLE EFFORT SNOULn q� SOIL I BE MADE TO REPLACE WITH A 6C-I"TER PE<FORMING 6MP ANn RECC�nEn AS 51X.N. AREA I � � �� �3r� P G l o�, - i-k ba V lS . 'Ee�C� �. 5�L N fl � I ll� S N N �9 W m c s