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61 INDIVIDUAL SUBSURFACE SEWAGE TREATMENT SYSTEMS 7080.2500 <br />Subp. 7. Use of soil treatment site. Activities on the current soil dispersal and treatment system or <br />the reserve soil dispersal and treatment area as specified in part 7082.0100, subpart 3, item F, that impair <br />the current or future treatment abilities or hydraulic performance of the soil treatment and dispersal system <br />are prohibited. This includes, but is not limited to, covering all or part of the soil treatment system with an <br />impermeable surface as determined by the local unit of government. <br />Subp. 8. System remediation. Any maintenance activity used to increase the acceptance of effluent <br />to a soil treatment and dispersal system must: <br />A. not be used on a system failing to protect groundwater as defined in part 7080.1500, subpart <br />4, item B, unless the activities meet the requirements of parts 7080.2350 and 7080.2400; <br />B. not cause preferential flow from the soil treatment and dispersal system bottom to the <br />periodically saturated soil or bedrock; and <br />C. be conducted by an appropriately certified qualified employee or an appropriately licensed <br />business as specified in part 7083.0790. <br />Any substance added with the intent to increase the infiltration rate of the soil treatment and dispersal <br />system must not contain hazardous substances. <br />Statutory Authority: MSS s 115.03; 115.55 <br />History: 32 SR 1347; 35 SR 1353; 38 SR 1001 <br />Published Electronically: January 22, 2014 <br />7080.2500 SYSTEM ABANDONMENT. <br />Subpart 1. Tank abandonment. All systems with no future intent for use must be abandoned <br />according to this part. Tank abandonment procedures for sewage tanks, cesspools, leaching pits, drywells, <br />seepage pits, vault privies, and pit privies must meet the requirements in items A to C. <br />A. All solids and liquids must be removed and disposed of according to part 7080.2450, subpart <br />6, by a licensed maintenance business. <br />B. All electrical devices and devices containing mercury must be removed and disposed of <br />according to applicable regulations. <br />C. Abandoned tanks or any other underground cavities must be removed or remain in place <br />and crushed with the remaining cavity filled with soil or rock material. <br />Subp. 2. Future discharge. Access for future discharge to the system must be permanently denied. <br />Subp. 3. Removal of system. If soil treatment and dispersal systems are removed, contaminated <br />materials shall be properly handled to prevent human contact. Contaminated materials include distribution <br />media, soil or sand within three feet of the system bottom, distribution pipes, tanks, and contaminated soil <br />around leaky tanks. Contaminated material also includes any soil that received sewage from a surface failure. <br />Contaminated materials must be disposed of according to items A to D. <br />A. Contaminated materials disposed of off -site must be disposed of according to part <br />7080.2450, subpart 6. <br />B. If contaminated material is to be spread or used on -site within one year of contact with <br />sewage, the material must be placed in an area meeting the soil and setback requirements described in part <br />7080.2150, subparts 2, item F, Table VII, and 3, item C, and the material must be covered with a minimum of <br />Copyright ©2014 by the Rev <br />so <br />of Statutes, State of Minnesota. All Rights Reserved. <br />