United States             Office of Water (WH550G)          EPA 570/9-91-036L
                    bnvironmentalProteclion                                January 1992
                    Agency

&EPA         Best Management  Practices

                    For  Protecting  Ground Water
                    Carwashes Using Shallow  Industrial
                                Waste Disposal  Wells
                        (Class V Well  BMP Fact Sheet Number 3)
                    EPA recognizes that drainage well disposal practices may pose a threat of contamination to Underground Sources
                    of Drinking Water. These wells, white necessary, may need additional attention to minimize their impact on ground
                    water resources.  For more information, contact the person named below.
                         BMPs

                          • Discharge to sewer systems or to holding tanks where practical and where in
                           compliance with State and local regulations

                          « Capture and recycle as much waste water as possible using filters, oil/water
                           separators with recyclable absorbents that absorb hydrocarbons but do not
                           react with water, reclamation systems, and other appropriate technologies;
                           some carwashes currently recycle 100 percent of captured waste water

                          • Inspect treatment equipment, tanks, and chemical containers regularly for leaks

                          • Use biodegradable soaps and chemicals instead of solvent-based solutions

                          • Calibrate treatment and application equipment regularly

                          • Process pit dirt to separate solids, contaminants, and wastewater

                          • Dry pit dirt in order to reduce waste shipped to special liquid waste landfills

                          • Hire a licensed transporter to dispose of pit dirt and wastewater treatment
                           residuals

                          • Comply with federal, State, and local solid and liquid waste disposal regulations

                          • Apply for a permit to continue injecting if so directed
                   Note: These BMPs are adapted from a May 1991 EPA report titled, "Class V Well BMP Guidance - Phase I and
                   Phase II," and have been modified in response to comments by EPA Regions For a copy of the EPA report, please
                   contact the Underground Injection Control Branch of the Office of Ground Water and Drinking Water, U.S. EPA

                   For further information contact:

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