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Home My WebLink AboutMLA18-00043 Stormwater Management Permit Application<' Q N LQ DEPARTMENT OF COMMUNITY DEVELO ba 621 Sheridan Street, Port Townsend, WA 98368 Tel: 360.379.4450 1 Fax: 360.379.4451 Web: www.co.pefferson.wa.us coinmunit develo meet ! �C i N G� E-mail: dcd@co.iefferson,wa.us T! 1 STORMWATER MANAGEMENT APPLICATIMS01y CO Purpose All new development and redevelopment must conform to the standards and minimum requirements set by the Washington Department of Ecology Stormwater Management Manual for the Puget Sound Basin (SMM) currently adopted by Jefferson County and be accompanied by a stormwater management permit if required by JCC 18.30.070(5). You will submit a Master Land Use Application Form in conjunction with this supplemental application. The Administrator may require additional measures as indicated by the environmental review or other site plan review. For projects that involve a building or land use permit, stormwater review will occur as part of your overall application review. A stand alone stormwater management permit is required for clearing and grading activities exceeding 7,000 sq/ft that do not involve a building permit or other land use approval (ie. preparing land for future construction, clearing for speculative purposes, etc.). A stormwater management permit is required for the following activities: • All grading of 500 cubic yards or more; except for those activities exempted under JCC 18.30.070(5) • All clearing and grading activities within environmentally sensitive areas as defined within 18.22 of the JCC; • Land -disturbing activities of 7,000 square feet or more; or • Creation of 2,000 square feet or more of impervious surface Exempt Grading Activities The following activities are exempt from the requirements for a stormwater management permit (if located outside of an environmentally sensitive area) under the provisions of 18.30.070 of the JCC: • Maintenance of gravel roads; • A SEPA-exempt residential driveway; • Construction of a Class 1 -III logging road (per RCW 76.09.050 and WAC 222); • Construction of drainage improvements in accordance with the JCC; or • Construction of a pond of one-half acre or less which is not in a regulated wetland. Stormwater Disposal Policy Along Marine Shorelines Pursuant to JCC 18.22.130(2) all new development activity, including single-family residential construction, located on Marrowstone Island, Indian Island and within 500 feet of any marine shoreline is required to infiltrate stormwater runoff onsite, to the maximum extent practicable. This provision is intended to prevent seawater from intruding into underground aquifers, reduce non -point source pollution to marine waters, and reduce the potential for shoreline erosion due to tightline failure. This provision is interpreted as establishing a hierarchy in which the first and best alternative is on-site infiltration using drywells or other methods, the second best alternative is upland off-site disposal, and the least preferred alternative is direct discharge into marine waters through a stormwater tightline. In order to utilize the least preferred alternative, a stormwater tightline discharging directly into marine waters, applicants must demonstrate through a geotechnical or similar report prepared by a licensed professional that both on-site infiltration and upland off-site disposal are not practicable or feasible. The report must include cost figures for comparison. G:\PermitCenter\###FORMS###\DRD\Stormwater\stormwater mgmt permit FINAL doc REV 10/20/2014 Page 1 Please note that if a stormwater runoff tightline that terminates at or near the marine shoreline is allowed to be included in a development application, review under the Jefferson County Shoreline Master Program, the State Environmental Policy Act (SEPA) and other agency approvals (such as Hydraulic Project Approval from the Department of Fish and Wildlife) may be required as well. A Joint Aquatic Resources Permit Application (DARPA) form would need to accompany any permit application which includes a stormwater tightline at or below the ordinary high water mark. Criteria Prior to issuance of a stormwater management permit, the applicant shall submit a Master Land Use Application (MLA) and the required stormwater management plans to the Administrator for review and approval. The development definitions, criteria and thresholds for determining stormwater management plan requirements from the adopted Stormwater Management Manual (SMM) are found in 18.30.070 of the JCC. This includes minimum requirements and thresholds for developing a: • Small Parcel Erosion and Sediment Control Plan; ■ Large Parcel Erosion and Sediment Control Plan; o Permanent Stormwater Quality Control Plan (PSQC) Process The Administrator of the Department of Community Development will issue the stormwater management permit consistent with a Type I (administrative) permit process only upon a finding that the proposed use or activity meets all applicable requirements of 18.30.060 and 18.30.070, and any other applicable requirements of the JCC. G:\PermitCenter\###FORMS###\DRD\Stormwater\stormwater mgmt permit—FINAL doc REV. 10/20/2014 Page 2 SON C J DEPARTMENT OF COMMUNITY DEVELOPMENT 621 Sheridan Street, Port Townsend, WA 98368 Tel: 360.379.4450 1 Fax: 360.379.4451 Web: www.co.iefferson.wa.us{communitydevelopment 111 N E-mail: dcd@co.iefferson.wa.us SUPPLEMENTAL APPLICATION STORMWATER MANAGEMENT PERMIT MLA # PROJECT/APPLICANT NAME: Applications for grading projects or land -disturbing activities which require a stormwater management permit shall include the following information. This information may also be provided on other diagrams, plans, studies, or attachments submitted with the project application. If so, please indicate such on this permit application. The Administrator may waive specific submittal requirements determined to be unnecessary for review of the application. 1. Source of fill material and deposition of excess material. Fill material will be clean granular material as needed for construction of driveway and septic system sourced from local pits. Excess material from house cut, septic system and driveway will be spread onsite. 2. Physical characteristics of fill material: Clean, granular gravel and/or sand. 3. Proposed methods of placement and compaction consistent with the applicable standards in the International Building Code. No structural excavator, and c m acte with a vibrato roller. NatiKe onsite material disposed of onsite will be spread with backhoe or excavator and compacted by traversing with the equipment placing the material. 4. Proposed surfacing material. Surfacing onsite will consist of clean crushed gravel for the driveway and parking areas. 5. Proposed method(s) of drainage and erosion control. Erosion control will consist of silt fence to 2rotect adjacent properties and critical areas, and ear;y installation of driveway to serve as a stabilized construction entrance. Drainage will be controlled through full dispersion of stormwater onsite roup re -vegetated areas. 6. Methods for restoration of the site. Areas disturbed as part of this project will be remediated for soil quality and depth. The remainder of the site will be reforested with native tree species planted 12' on center. 7. Demonstrate that instream flow of water will remain unobstructed. Thiseject will not occur in -stream and any discharge from the site will be filtered through silt fence and a 200' wide vegetated buffer before discharging to the nearby Eagle Creek. 8. Demonstrate that erosion and sedimentation from outflow channels will be minimized by vegetation or other means, and demonstrate that pond runoff will be controlled to protect adjacent property damage. There-areThene-are no ou if w Channels or ponds 121anned forthis Qromect. The project will iml2lemenLfull disl2ersion of stormwater through replanted areas onsite to treat stormwater and attenuate peak flows. By signing the application form, the applicant/owner attests that the information provided herein is true and correct to the best of their knowledge. I also certify that this application is being made with the full knowledge and consent of all owners of the affected props -41 (LANDOWNER OR AUTHORIZED REPRESENTATIVE SIGNATURE) (DATE) G:\PermitCenter\###FORMS###\DRD\Stormwater\stormwater mgmt permit—FINAL doc REV 10/20/2014 Page 3