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Stormwater Permit Changes 2017 By controlling erosion, home builders help keep our lakes and streams clean New State Permit Requirements: The city of Kalispell is required to meet a new, more stringent stormwater permit from the Montana DEQ. In order to comply with the new permit requirements, the stormwater management permitting process must be updated. Key Construction Changes Permit review and approval by the city prior to moving any dirt Increased inspections Permit termination Permit Review and Approval The new stormwater management permit approval process includes the following steps: Permit submitted City reviews permit Letter approving or denying permit issued within 2 weeks No building permits will be issued without the ap- proval of the stormwater management permit. Increased Inspections The City of Kalispell is required by the Montana DEQ to conduct more site inspections than we have done in the past. We will be seeing you out there more often this year! Permit Termination When construction is finished, the City of Ka- lispell must be notified of completion. A Notice of Termination (NOT) form is available on the city’s website. The NOT must be submitted to the City of Kalispell at the time of substantial completion. Time Line All permits submitted after July 14th, 2017 will be subject to these changes Additional Information To learn more visit the City of Kalispell website at www.kalispell.com/stormwater_management or contact us at 758-7859 or [EMAIL REDACTED] Public Works Department ---PAGE BREAK--- Erosion Control Best Management Practices (BMPs) for Home Sites Perimeter Controls: BMP- silt fence, berm, fiber roll Install prior to land disturb- ance Install on down slope sides of site parallel to contour of the land Extend ends upslope enough to allow water to pond behind BMP Leave no gaps-overlap sec- tions Inspect every 14 days and after every hard rain Maintain BMPs-remove sedi- ment, fix holes, and replace when needed Maintain until lawn estab- lished Soil Piles Cover with plastic and locate away from any down slope street, driveway, stream, lake, wetland, ditch or storm drain- age way Temporary seed such as an- nual rye or winter wheat is recommended for topsoil piles Vehicle Tracking Pad Install 4”-8” stone tracking pad prior to excavation Lay stone 6”-14” deep and at least 15 feet wide from the foundation to the street In clay soils, use of geotex- tiles under the stone is recom- mended Use to prevent tracking mud onto the road by all vehicles Maintain throughout con- struction Sediment Cleanup At the end of each workday, sweep or scrape up soil tracked onto the road At the end of each workday and after a storm, clean up soil washed off-site Sewer Inlet Protection Protect on-site storm sewer inlets with BMPs Inspect, repair, and remove sediment deposits after every storm Vegetation Preserve existing vegetation wherever possible Seed, sod, or mulch bare soil as soon as possible. Vegeta- tion is the most effective way to control erosion Seeding and Mulching Spread four to six inches of topsoil Fertilize per manufacturer’s directions Seed with appropriate mix Rake to cover seed with 1/4” of soil Mulch with straw Water gently everyday or two to keep soil moist Seeding is required immedi- ately on slopes of 3:1or great- er and on disturbed areas ex- posed for longer than 14 days Generally the best times to seed or sod are early fall (Aug 15-Sept 15) or spring (May). Sod may be laid until Novem- ber 1. Temporary seed may be planted until October 15. Poorly Installed silt fence will not prevent soil erosion. Fabric must be buried in a trench and sections must overlap Erosion and sediment loss is eliminated on seeded areas (left side). ---PAGE BREAK--- Erosion Control Practices for Home Sites Controlling Erosion is Easy Erosion control is important even for home sites of an acre or less. The materials needed are easy to find and relatively inexpensive: silt fence, fiber rolls, straw mulch, gravel, stakes, grass seed, and sod. Putting these material to use is a straight forward process. On- ly a few controls are needed on most sites: Erosion and Sediment Control Preserving existing trees and grass where possible to pre- vent erosion Re-vegetating the site as soon as possible Perimeter controls on the down side of the lot: silt fence, fiber rolls, earth berm Placing soil piles away from any road or waterways Wind Erosion Prevention: seeding, covering soil piles, wetting soil surfaces Diversion on upslope side and around stockpiles Stone/rock access drive used by all vehicles to limit track- ing of mud onto streets Cleanup of sediment carried off-site by vehicles or storms Maintain BMPs, and replace when insufficient Pollution Prevention and Waste Management Keep solid waste material in a container Cleanup work site at the end of each day Store hazardous material in secondary containment Dispose of hazardous water properly Ensure concrete wash water is properly contained and dis- posed of in designated area Locate sanitary water facilities 15 feet away from storm drains Poor installaƟon of silt fencing, fair to good seeding. Silt fence must be trenched in along boƩom. Straw bales are not approved as sedi- ment barriers. Fiber roll Wrong! ---PAGE BREAK--- Silt Fence Fiber roll Vehicle Tracking Pad Inlet Protection Erosion Control BMPs for Home Sites filter fabric 6 inches minimum 3” to 6” rock 6 inches minimum 30 14” min. Silt fence along sides if needed