Introduction to the issue In some regions of Oregon, drywells are used to dispose of storm water from paved roadways and parking lots. The runoff from these paved areas is typically contaminated with hydrocarbons and heavy metals, but many of the drywells have no pre-treatment system to remove these pollutants. The polluted storm water makes its way into the groundwater and the drinking water supply. The Oregon Department of Environmental Quality (DEQ) regulates drywells as part of the federal Safe Drinking Water Act (SDWA), which requires that all storm water drywells be found to have no impact on ground water quality. This often requires retrofitting existing drywells to add a pre-treatment system to those without. The SDWA has no "grandfather" clause and all drywells need to comply with current requirements, regardless of when they were constructed. Further references
EPA / United States Environmental Protection Agency Underground Injection Control Program http://water.epa.gov/type/groundwater/uic/index.cfm	Oregon Department of Environmental Quality Water Quality / Underground Injection Control (UIC) Program http://www.deq.state.or.us/wq/uic/uic.htm
The DRS solution Our unique, patented products are designed to make it easy to retrofit existing drywells and bring them into compliance with current government requirements as economically as possible. It's important to protect our ground water drinking supplies and we can help you do it! Contact us today to discuss your unique site conditions and let us custom fabricate one of these cost-saving solutions for you.
Drywell Retrofit Sump Insert The Sump Insert is meant to be installed inside the perforated chamber of an existing drywell where it performs the same function as a typical pollution-control manhole. Sediments in the raw storm water settle out and collect in the bottom of the sump, while oil baffles on the outlets keep oil, grease, and other floatable hydrocarbons inside the sump assembly. Download the product information sheet.	Drywell Retrofit Diverter Top The Diverter Top is meant to be installed just below the pavement surface where it intercepts the raw, polluted storm water entering the drywell and diverts it laterally to a water quality treatment system. The Diverter Top then receives the treated storm water back again and allows it to fall into the drywell and infiltrate into the native soils. Download the product information sheet.
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