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f l <br /> Wash Water BMPs for Non-Profit Activities <br /> OREGON DEQ <br /> RECOMMENDED BEST MANAGEMENT PRACTICES (BMPs) <br /> FOR WASHING ACTIVITIES <br /> (March 1998) <br /> Vehicle washing by private citizens and fund-raising groups such as schools, churches, boy <br /> scouts, girl scouts, etc. is permitted under the wash water permits (1700A and 1700B). <br /> Fund-raising groups must limit their frequency of washing to no more than once a month <br /> and employ the following best management practices: <br /> Connection or drainage to sanitary sewer is the preferred disposal option and shall be <br /> implemented with the permission of the local authority whenever possible. <br /> Permission of the local authority to discharge into their storm sewer system shall be <br /> obtained prior to washing. <br /> Washing shall be limited to the exterior of vehicles(no engines,transmissions, or <br /> undercarriages). <br /> The use of acids, bases,metal brighteners, or hot water is prohibited. The use of <br /> biodegradable,phosphate-free cleaners with cold water is allowed. However, cleaning <br /> only with cold water is recommended. Chemicals, soaps, or detergents shall be used <br /> sparingly. <br /> Water hoses shall not be allowed to flow freely. Nozzles shall be attached to all hoses to <br /> provide additional pressure and decrease overall usage of water. <br /> Wash water shall either occur on unpaved areas or be directed to unpaved areas whenever <br /> possible. <br />