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Home My WebLink AboutStormwater Pollution Plan Checklist for GRD2015-00011 - PLN General - 6/29/2015 RECEIVED Mason County JUL 27 2015 Construction Stormwater Pollution Plan Submittal Checkl1w W. CEDAR ST. Project Name: Belfair Elementary Two Double Dry Portables Parcel#'s: 12332-40-6001000 County Project No.: Author of Report: Sitts & Hill Engineers, Inc. Minimum Requirements of the DOE 2005 Stormwater Manual The Stormwater checklist identifies the minimum requirements of the DOE 2005 Stormwater Manual. The Checklist is intended to identify the locations within the plan that addresses the minimum requirements. Mason County will not perform a technical evaluation of the submittal. Rather, the checklist provides a guide to allow Mason County to review the submittal and determine if the applicant has addressed the minimum features that make up a Stormwater plan. It is incumbent upon the applicant and his/her engineer to fulfill all the applicable requirements of the 2005 Stormwater Plan as it relates to the proposed project. Review by Mason County is intended to determine if the plan has addressed the minimum requirements. Applicant's engineer shall be responsible for the technical accuracy of the submitted Stormwater plan. During construction of the project, the stormwater plan engineer of record or his/her authorized representative shall inspect the site to ensure the stormwater plan is being implemented as designed. Upon completion of the project, the engineer or his authorized representative shall be required to certify that the stormwater plan has been implemented as designed. Failure to meet the minimum requirements could result in delay or rejection of the application until the deficiencies are corrected. Section I—Construction SWPPP Narrative 1. Construction Stormwater Pollution Prevention Elements *�*a. Describe how each of the Construction Stormwater Pollution Prevention Element has been addressed though the Construction SWPPP. Vb. Identify the type and location of BMPs used to satisfy the required element. VC. Written justification identifying the reason an element is not applicable to the proposal. 12 Required Elements—Construction Stormwater Pollution Prevention Plan Q7/1. Mark Clearing Limits, See page/paragraph Appendix A.1.1 on P.17 V2. Establish Construction Access, See page/paragraph Appendix A.1.2 on P.17 V3. Control Flow Rates, See page/paragraph Appendix A.1.3 on P.17 `e4. Install Sediment Controls, See page/paragraph Appendix A.1.4 on P.18 �5. Stabilize Soils, See page/paragraph Appendix A.1.5 on P.18 IACommunity DevelopmentTAOSTORMWATER 1 of 5 Updated May 20,2009 _Je6. Protect Slopes, See page/paragraph Appendix A.1.6 on P.18 '�e7. Protect Drain Inlets, See page/paragraph Appendix A.1.7 on P.19 V8. Stabilize Channels and Outlets, See page/paragraph Appendix A.1.8 on P.19 Ne9. Control Pollutants, See page/paragraph Appendix A.1.9 on P.19 Nei0. Control De-Watering, See page/paragraph Appendix A.1.10 on P.19 V11. Maintain BMPs, See page/paragraph Appendix A.1.11 on P.19 vie 12. Manage the Project, See page/paragraph Appendix A.1.12 on P.19 2. Project Description lea. Total project area. Acres 0.39 Sq. Ft. 17,140 _Jeb. Total proposed impervious area. Acres 0.06 Sq. Ft. 2,404 lec. Total proposed are to be disturbed, included off-site borrow and fill areas. Acres 0.39 Sq. Ft. 17,140 Vzd. Total volumes of proposed cut and fill. Cubic Yards Cut volume not to exceed 230 CY 3. Existing Site Conditions N�ea. Description of the existing topography. See page/paragraph Section 1.2 on P.3 Neb. Description of the existing vegetation. See page/paragraph Section 1.2 on P.3 -Nec. Description of the existing drainage. See page/paragraph Section 1.2 on P.3 4. Adjacent Areas *ZI. Description of adjacent areas that may be affected by the site disturbance lea. Streams, See page/paragraph Appendix AA on P.22 Neb. Lakes, See page/paragraph Appendix A.4 on P.22 �c. Wetlands, See page/paragraph Appendix A.4 on P.22 �d. Residential Areas, See page/paragraph Appendix A.4 on P.22 lee. Roads, See page/paragraph Appendix A.4 on P.22 N/A f. Other, See page/paragraph N/A *01,11II. Description of the downstream drainage path leading from the site to the receiving body of water. (Minimum distance of 400 yards), See page/paragraph Section 3.0 on P.16 5. Critical Areas �a. Description of critical areas that are on or adjacent to the site. See page/paragraph Appendix A.5 on P.22 N/A b. Description of special requirements for working in or near critical areas. See page/paragraph N/A IACommunity Development\PAC\STORMWATER 2 of 5 Updated May 20,2009 6. Soils Description of on-site soils. lea. Soil name(s), See page/paragraph Appendix AA,, P.22- P.25 jeb. Soil mapping unit, See page/paragraph Appendix A.6, P.22- P.25 VC. Erodibility, See page/paragraph Appendix A.6, P.22- P.25 Vd. Settleability, See page/paragraph Appendix A.6, P.22- P.25 Ve. Permeability, See page/paragraph Appendix A.6, P.22- P.25 `ef. Depth, See page/paragraph Appendix A.6, P.22-P.25 3eg. Texture, See page/paragraph Appendix A.6, P.22 - P.25 Neh. Soil Structure, See page/paragraph Appendix A.6, P.22- P.25 7. Erosion Problem Areas -SeDescription of potential erosion problems on site. See page/paragraph Appendix A.7 on P.26 8. Construction Phasing Cea. Construction sequence, See page/paragraph Appendix A.8 on P.26 _Jeb. Construction phasing(if proposed) , See page/paragraph Appendix A.8 on P.26 9. Construction Schedule VeI. Provide a proposed construction schedule, See page/paragraph Appendix A.9 on P.26 NeII. Wet Season Construction Activities *+*a. Proposed wet season construction activities, See page/paragraph Applicable notes on C1.2 leb. Proposed wet season construction restraints for environmentally sensitive/critical areas. See page/paragraph Applicable notes on C1.2 10. Engineering Calculations Provide Design Calculations. N/A a. Sediment Ponds/Traps, See page/paragraph Not proposed N/A b. Diversions, See page/paragraph N/A N/A c. Waterways, See page/paragraph N/A N/A d. Runoff/Stormwater Detention Calculations, See page/paragraph N/A 11. Operations and Maintenance. N/A An operation and maintenance schedule shall be provided for all proposed stormwater facilities and BMPs, and the party (or parties) responsible for maintenance and operation shall be identified. An operation and maintenance (O&M)Declaration of Covenant will be required to cover all privately owned and maintained stormwater facilities. O&M Declaration of Covenant forms are available at the Mason County Permit Assistance Center, 426 W. Cedar Street, Shelton, WA 98584. The proponent shall record a copy of the completed Declaration with the Mason County Auditors' office. A copy of the recorded document must be submitted to the Permit Assistance Center together with this completed Checklist. See page/paragraph I:\Community Development\PAC\STORMWATER 3 of 5 Updated May 20,2009 � Section II — Erosion and Sediment Control Plans 1. General _lea. Vicinity Map, See page/paragraph T1"0 N/R b. Clearing and Grading Approval Block, See page/paragraph Not Received From County lec. Erosion and Sediment Control Notes, See page/paragraph Applicable Notes on C1.2 2. Site Plan Cea. Legal description of subject property Vb. North Arrow �ec. Indicate boundaries of existing vegetations, e.g. tree lines,pasture areas, etc. led. Identify and label areas of potential erosion problems, See page/paragraph Appendix A.7 on P.26 N/A e. Identify any on-site or adjacent surface waters, critical areas and associated buffers N/A f. Identify FEMA base flood boundaries and Shoreline Management boundaries (if applicable), See page/paragraph �g. Show existing and proposed contours *+*h. Indicate drainage basins and direction of flow for individual drainage areas Vi. Label final grade contours and identify developed condition drainage basins J. Delineate areas that are to be cleared and graded k. Show all cut and fill slopes indicating top and bottom of slope catch lines 3. Conveyance Systems Sea. Designate locations for swales, interceptor trenches, or ditches Neb. Show all temporary and permanent drainage pipes, ditches, or cut-off trenches required for erosion and sediment control VC. Provide minimum slope and cover for all temporary pipes or call out pipe inverts Vd. Show grades, dimensions, and direction of flow in all ditches, swales, culverts, and pipes _lee. Provide details for bypassing off-site runoff around disturbed areas N/A f. Indicate locations and outlets of any dewatering systems 4. Location of Detention BMPs 1a. Identify location of detention BMPs. 5. Erosion and Sediment Control Facilities 4�"a. Show the locations of sediment trap(s),pond(s), and pipe structures. `p b. Dimension pond berm widths and inside and outside pond slopes. �ec. Indicate the trap/pond storage required and the depth, length, and width dimensions. ;ed. Provide typical section views through pond and outlet structure. IACommunity DevelopmentTAOSTORMWATER 4 of 5 Updated May 20,2009 N/A e.Provide typical details of gravel cone and standpipe, and/or other filtering devices. -lef. Detail stabilization techniques for outlet/inlet. N/A g. Detail control/restrictor device location and details. jeh. Specify mulch and/or recommended cover of berms and slopes. N/A i. Provide rock specifications and detail for rock check dams. N/A j. Specify spacing for rock check dams as required. N/A k. Provide front and side sections of typical rock check dams. lei. Indicate the locations and provide details and specifications for silt fabric. N/A in. Locate the construction entrance and provide a detail. 6.Detailed Drawings lea. Any structural practices used that are not referenced in the Ecology Manual should be explained and illustrated with detailed drawings. 7.Other Pollutant BMPs Oza. Indicate on the site plan the location of BMPs to be used for the control of pollutants other than sediment, e.g. concrete wash water. 8.Monitoring Locations N/A a. Indicate on the site plan the water quality sampling locations to be used for monitoring water quality on the construction site, if applicable. I certify that the stormwater plan submitted for this project fulfills the applicable provisions of the 2005 DOE Stormwater Manual. 6/24/2015 Eftineif IV Date u �l App ' nt Date Place eng. stamp and sign/date above. IACommunity DevelopmentTAC\STORMWATER 5 of 5 Updated May 20,2009