Erosion and Sediment Control for Commerical and Residential Construction Protect Water Each municipality has an adopted Illicit Discharge Program describing allowable and prohibited discharges to the city’s storm drain system. Contractors/Owners found discharging pollutants to the city’s storm drain system are subject to enforcement procedures as described within each city’s Municipal Code. Penalties can range from civil infraction (monetary ne) to a criminal citation. When sediment is carried osite by rain, vehicles, wind, and materials placed on the roadway, the sediment and pollutants within can harm lakes, streams, wetlands and groundwater or plug a storm system causing ooding. The U.S. Environmental Protection Agency estimates that a one-acre construction site can lose as much as 20 to 150 tons of soil every year due to erosion and stormwater runo. Lot Development A Lot Development is a connected area where separate construction activities may happen at dierent times, on dierent schedules, under one proposed plan or independent of a proposed plan. Some Lot Development may be governed by a Construction General Stormwater Permit established at the time of larger development initial construction. Erosion and sediment control is required regardless of the size or shape of a project. Whether it is a single home, landscaping improvements, oce building, or large subdivision, it is required to keep water, dirt, and other construction material on site. Examples of Lot Development include: • Individual home construction • Home or landscaping improvements • Commercial/industrial sites • Phased projects What can you do to protect receiving waters from pollution? See the 10 steps to Stormwater Pollution Prevention inside of this pamphlet to learn ways to minimize sediment from leaving your construction site. By selecting and applying the appropriate steps, you can help keep our water clean! Why is this Required? Owners or operators of Municipal Separate Storm Sewer Systems (MS4s) in Eastern Washington are required by the State to be covered under the Eastern Washington Phase II Municipal Stormwater Permit. The Phase II permit requires the owners/operators to up hold the requirements within the permit including compliance with the federal Clean Water Act, federal Safe Drinking Water Act and the state Water Pollution Control Act. This applies to your project. City Municipal Code Illicit Discharge Codes: City of West Richland: Chapter 13.82 City of Richland: Chapter 16.05 City of Kennewick: Chapter 14.29 City of Pasco: Chapter 13.80 Common BMPs Chapter 7.3 of the Stormwater Management Manual for Eastern Washington provides standards and specications for Construction Site Best Management Practices for runo prevention. Common BMPs are: • BMP C105E: Stabilized Construction Access • BMP C151E: Concrete Handling • BMP C152E: Sawcutting and Surfacing Pollution Prevention • BMP C154E: Concrete Washout Area • BMP C220E: Inlet Protection • BMP C233E: Silt Fence Check local governing agency for specic erosion and sediment control requirements. www.ci.richland.wa.us Spill Response: (509) 942-7480 City of Richland www.pasco-wa.gov Spill Response: (509) 543-5777 City of Pasco www.westrichland.org Spill Response: (509) 967-5434 City of West Richland www.go2kennewick.com Spill Response: (509) 585-4419 City of Kennewick EROSION AND SEDIMENT CONTROL RICHLAND | KENNEWICK | PASCO | WEST RICHLAND RICHLAND | KENNEWICK | PASCO | WEST RICHLAND Immediately stabilize exposed portions of the site with rock, mulch or hydro-seed whenever construction work will stop for 14 or more days, even if work is only temporarily stopped. Remember, nal stabilization is required prior to terminating permit coverage. Keep in mind that temporary or permanent stabilization must be completed within 7 days if your project is within 1 mile of a special or impaired water. Site Stabilization Keep a copy of your complete and up-to-date SWPPP and/or Erosion and Sediment Control Plan showing where each BMP is or will be installed. If required, records of the site inspections completed by a trained inspector shall be on site and easily available. Keep an Up-to-Date Copy of Your SWPPP on Site Designate a leak-proof basin lined with plastic for washing out used concrete and stucco containers. Never wash excess stucco or concrete residue down a storm drain or into a stream! Install a Concrete/Stucco Washout Basin Minimize sediment track out from vehicles exiting your site by maintaining an exit pad made of crushed rock spread over geotextile fabric, a shaker rack, or a wash rack at the construction site exit. If sediment track-out occurs, sweep and remove deposited sediment within 24 hours of discovery or earlier if rain is expected. Never wash track-out to a catch basin or water body. Maintain a Stabilized Exit Pad Sediment control logs, gravel barriers, and sand or rock bags are options for eective inlet controls. Make sure to remove accumulated sediment whenever the device becomes nonfunctional. Some jurisdictions may require additional perimeter controls. Install Inlet Controls Clearly identify separate waste disposal areas on site for hazardous waste, construction waste, and domestic waste by designating with signage, and protect from run-on and runo. Designate Waste Disposal Areas Install perimeter controls such as sediment lter logs or silt fences around the downhill boundaries of your site. Make sure to remove accumulated sediment whenever it has reached halfway up the control. Some jurisdictions may require additional perimeter controls. Install Perimeter Controls on Downhill Lot Line At the end of every workday and when rain is expected, provide cover for materials that could leach pollutants. Protect Construction Materials from Run-On and Runo Operators shall try and preserve native topsoil on site unless infeasible and protect all soil storage piles from run-on and runo. For smaller stockpiles, coving the entire pile with a tarp may be sucient. Stockpile Your Soil If you will be installing inltration-based features such as rain gardens or bioswales, make sure these areas are designated as o limits to avoid compaction. Save time and money by preserving existing mature trees during construction. Preserving mature trees minimizes the amount of soil that needs to be stabilized once construction is complete, and minimizes the amount of runo during and after construction activity. Protect Any Areas Reserved for Vegetation or Inltration and Preserve Existing Trees 10 Stepsto Stormwater Pollution Prevention on Construction Sites NOTE: This graphic does not address post-construction stormwater treatment permit requirements Graphic courtesy of US EPA. www.ci.richland.wa.us Spill Response: (509) 942-7480 City of Richland www.pasco-wa.gov Spill Response: (509) 543-5777 City of Pasco www.westrichland.org Spill Response: (509) 967-5434 City of West Richland www.go2kennewick.com Spill Response: (509) 585-4419 City of Kennewick Keep water, dirt, and other construction materials on the construction site & out of the storm system