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Home My WebLink About10- COMMUNICATIONSJEFFERSON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT 621 Sheridan Street | Port Townsend, WA 98368 360-379-4450 | email: dcd@co.jefferson.wa.us www.co.jefferson.wa.us/commdevelopment June 8, 2022 TERRAPIN ARCHITECTURE 727 TAYLOR ST PORT TOWNSEND WA 98368 RE: SITE ADDRESS: 47 MUNN RD CASE #: MLA22-00017 Dear TERRAPIN ARCHITECTURE: The Department of Community Development is in the process of reviewing your application. The following information is needed to continue review of your project. 1. STORMWATER: The Jefferson County Department of Community Development (“DCD”) has the following questions regarding existing stormwater best management practices on the subject property: a. Please describe the current stormwater best management practices (“BMPs”) installed for the existing single-family residence and driveway (e.g. Full Dispersion, Drywell, Downspouts, etc.). How will the expansion alter these controls? If the current stormwater BMPs will not be altered as a result of the project, please explain how they will not be altered. b. According to the 2022 Wetland Delineation Report and Habitat Management Plan (prepared by Olympic Wetland Resources, LLC), “stormwater from impervious surfaces will be directed away from the lake per stormwater regulations” (see pg. 9 of 37). Please describe how stormwater will be directed away from the lake and wetland areas. c. According to the submitted Site Plan (received 2/25/2022), proposed residential expansions and additions include the new carport (477 sq. ft), new additions (376 sq. ft), and new decks (484 sq. ft), totaling 1,337 square feet. These calculations differ from the 2022 Wetland Delineation Report and Habitat Management Plan. According to the 2022 Wetland Report, proposed residential expansions and additions include the new carport (488 sq. ft), new additions (419 sq. ft), and new decks (546 sq. ft), totaling 1,453 square feet (see pg. 13 of 37). Please verify which calculations are correct and revise the incorrect documents accordingly. d. According to the submitted Site Plan and Stormwater Calculation Worksheet (received 2/25/2022), the proposed new deck areas (Project Component C and E) are not included in the new impervious surface calculations. According to the impervious surface definition in JCC 18.10.090, new decks are considered new impervious surface. Please revise the Stormwater Calculation Worksheet and Site Plan to include new deck square footage as new impervious surface. 2. SITE VISIT: The Jefferson County Department of Community Development (“DCD”) would like to conduct a site visit at the subject property to review all proposed expansion areas, existing development (e.g. sheds), and critical area locations. The assigned planner, Ms. Hunt, would like to schedule a site visit during the week of June 20th, 2022. The date and time will be coordinated with the property owner. Please confirm if the applicant will grant permission for Jefferson County DCD Staff to visit the subject property during the week of June 20th, 2022. Please also confirm where DCD Staff can park and if there are any gates or codes that would prohibit access. The applicant is not required to attend the site visit, but are welcome to join DCD Staff on-site. a. Olympic Wetland Resources, LLC has identified the following numbers for proposed mitigation planting areas: (1) Over 3,000 square feet; (2) over 2,500 square feet; and (3) 2,510 square feet. Please have the Olympic Wetland Resources clarify which square footage number is correct for the proposed mitigation planting areas. b. The area from the toe of the slope of the subject property to the marine waters of Lake Leland indicates that the on-site stream has the potential to serve as fish habitat (Type “F” Stream). Please have Olympic Wetland Resources, LCC explain why the stream was delineated as non-fish bearing perennial (Type “Np” Stream) instead of Type “F” Stream. Please submit the above information to the Department of Community Development within 90 days of the date of this letter which would be 9/6/2022. Please call 360-379-4450 to speak with the assigned planner if you have any questions. Sincerely, _____________________________________ Department of Community Development Staff Amanda Hunt 3. WETLAND REPORT: The Jefferson County Department of Community Development (“DCD”) has the following questions regarding the 2022 Wetland Delineation Report and Habitat Management Plan prepared by Olympic Wetland Resources, LLC in February 2022: ____________________________________________________________________________________ 727 Taylor Street, Port Townsend, WA 98368 360-379-8090 www.terrapinarchitecture.com June 27, 2022 Jefferson County Department of Community Development 621 Sheridan Street Port Townsend, WA 98368 Attn: Amanda Hunt Re: Case # MLA22-00017 47 Munn Rd. Quilcene, WA 98376 This memo is in response to your letter asking for additional information, dated June 8, 2022. 1. Stormwater: a. Existing conditions: Downspouts from the roof of the existing house are routed into tightlines that empty the water directly into Lake Leland. Runoff from the driveway sheet flows from the edge of the driveway through a grass flow path between the driveway and the lake that exceeds 50’. (It is about 65’). a. Proposed stormwater management strategies: Existing tightline to the lake will be abandoned. Instead, roof runoff will be routed to a yard catch basin, and from the catch basin to a rocky outfall located approximately 100’ from the lake shore, to the south of the house. Roof runoff will infiltrate over the course of a 50’ flow path toward the lake from the rocky outfall. The existing driveway and flow path between the driveway and the lake will not change except for the following: The carport will be built over part of the existing driveway, so runoff from the carport roof will go into the roof runoff system. This should reduce the demand on the driveway flow path. Also, wetland mitigation plantings will be added within the driveway flow path. We believe that this will enhance the performance of the flow path for infiltration, and perhaps increase the ability of the flow path to evaporate water into the air. In other words, the stormwater BMP for the driveway runoff will not change, except in some minor ways that should help it to perform better. b. The Wetland Delineation Report and Habitat Management Plan will be revised to reflect the proposed stormwater management strategies described above. c. We realized that there were some minor discrepancies between the building dimensions shown on the building plans vs. those shown on the site plan. Perhaps this was the source ____________________________________________________________________________________ 727 Taylor Street, Port Townsend, WA 98368 360-379-8090 www.terrapinarchitecture.com of various different numbers used in our submittal, along with lack of clarity about whether to use footprint or roofprint figures, and additionally a minor plan revision reducing the size of the deck, after figures were given to Dixie. Anyway, we compared the drawings and made minor revisions so that the building plans and site plan are fully consistent. This resulted in a third slightly different but correct set of impervious area calculations, that are shown on the revised site plan attached to this memo. The numbers for new impervious areas are as follows: New Carport Roofprint: 542 s.f. (built over existing driveway, so not new impervious) New Additions Roofprint: 409 s.f. New decks: 478 s.f. The building area factors noted in the Wetland Delineation Report will be revised to match these numbers. d. We do not agree that it makes any sense to include pervious deck surfaces C and E in impervious area calculations, but we are including them as directed in your letter. 2. Site Visit: We corresponded by email about scheduling the Site Visit after we respond to the request for additional information. So, after you receive and review this information, please contact the Owners to schedule the Site Visit. Contact info: Lisa McIlwain lrmcilwain@gmail.com 971-235-0903 Tom McIlwain twmcilwain@gmail.com 3. Wetland Report: 2510 square feet of plantings is the number calculated by adding the area required for each plant in the planting specification table, so that is the most accurate number. Elsewhere in the report, the amount of mitigation has been revised to say “more than 2500 square feet”, consistent with the calculated 2510. Olympic Wetland Resources, LLC has added information to the Wetland Report regarding their determination that the stream is not fish-bearing.