United States              Oflice of Water (WH 550G)           EPA 570/9-91-036A
                    Environmental Protection                                   January 1992
                    Agency                                                _
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AEPA        Best Management Practices

                    For  Protecting Ground Water

                     Automotive Service Stations  Using

                         Shallow Waste Disposal Wells
                         (Class V Well BMP Fact Sheet Number 1)

                    EPA recognizes that certain industrial waste disposal practices using drainage welte may pose unacceptable risks to
                    Underground Sources of Drinking Water. These operations allow the discharge of various wastes to a drainage
                    system neither designed for nor capable of treating them. Accordingly, BMPs for Service Station Disposal Welte
                    focus on well closure and alternative disposal methods. We nave also included BMPs for waste minimization to help
                    facilities reduce waste disposal costs, regardless of the disposal method they use. In addition local, county, and
                    State regulations may prohibit use of these welte. Note: these practices are recommendations only. For more
                    information, contact the person named below
                          Well Closure (if so directed)

                           • Submit closure plan if so directed; temporarily plug well with cement or plumbers
                            plug until plan is approved

                           • After sampling well contents, clean pipes and drains leading to well if so directed,
                            using, for example, plastic pigs

                           • Remove liquid and sludge from well if so directed; dispose of in compliance with
                            federal, State, and local laws

                           • Fill well voids with clean inert material; seal pipes and well sides with cement or
                            concrete; plug and cap well opening; seal cap and floor

                           • Remove and dispose of visibly contaminated soil in compliance wrth federal,
                            State, and local laws

                           • After removing visibly contaminated soil, collect and analyze soil and fluid
                            samples; send results to Chief of the appropriate State or Region Section

                           • For bay drain(s) connected to a septic system, continue to use septic system
                            (after closing bay drains) only if allowed and only for domestic waste

                          Alternative Disposal

                           • If floor drain(s) are required, connect drain(s)/disposal system(s) to sanitary
                            sewer if allowed by appropriate federal, State and local regulations

                           • If floor drain(s) are required, connect drain(s) to holding tank; periodically pump
                            out tank and have licensed hauler transport wastes to an approved treatment or
                            disposal facility

                           • Use waste exchange services to reuse and recycle as much waste as practical

                           • Apply for a permit to continue injecting if so directed

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       Waste Minimization

         • Provide employee training as part of an overall commitment to pollution
           prevention

         • Provide incentives for developing new pollution prevention ideas

         • Clearly label, inventory, and monitor the use and storage of all raw materials
           and wastes

         • Handle raw materials and wastes carefully to minimize spills and contamina-
           tion

         • Install collection devices, such as drip trays and splash guards, to contain
           spilled wastes

         • Keep floors clean; clean up spills immediately to prevent waste accumulation

         • Collect spilled materials manually,  (for example, with a wet vac) before using
           non-reusable absorbent materials

         • Use biodegradable cleaning agents and safe alternatives to hazardous
           materials

         • Recycle wastes when possible

         • Use recirculating solvent sinks to reduce waste volume

         • Collect rain or snow  melt using wet vac or mop and dispose of properly

         • Minimize use of chlorinated solvents
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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