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7080.2300 INDIVIDUAL SUBSURFACE SEWAGE TREATMENT SYSTEMS 56 <br />Statutory Authority: MS s 115.03; 115.55 <br />History: 32 SR 1347 <br />Published Electronically: October 10, 2013 <br />7080.2290 HOLDING TANKS. <br />A. To qualify as a holding tank, the system must: <br />(1) meet or exceed applicable requirements of parts 7080.1900 to 7080.2030; <br />(2) meet or exceed the applicable requirements of part 7080.2150, subpart 2; <br />(3) meet or exceed the requirements of part 7080.2150, subpart 3, item B; and <br />(4) meet the requirements of items B to F. <br />B. All tanks used as holding tanks must be tested for watertightness as specified in part <br />7080.2010, subpart 3. <br />C. A cleanout pipe of at least six inches in diameter must extend to the ground surface and be <br />provided with seals to prevent odor emissions and exclude insects and vermin. A maintenance hole of at <br />least 20 inches in least dimension must extend through the cover to a point within 12 inches, but no closer <br />than six inches, below finished grade. If the maintenance hole is covered with less than six inches of soil, <br />the cover must be secured according to part 7080.1970, item C. <br />D. For a dwelling, the minimum size is 1,000 gallons or 400 gallons times the number of <br />bedrooms, whichever is greater. For other establishments, the minimum capacity shall be at least five times <br />the design flow. Tank sizing for floodplain areas must be calculated according to part 7080.2270, subpart <br />10. <br />E. Holding tanks must be located in an area readily accessible to the pump truck under all <br />weather conditions and where accidental spillage during pumping will not create a nuisance and must meet <br />the setback requirements as specified in Table Vll in part 7080.2150, subpart 2, item F. <br />F. Holding tanks must have an alarm device to minimize the chance of accidental sewage <br />overflows unless regularly scheduled pumping is used. An alarm device shall identify when the holding <br />tank is at 75 percent capacity. <br />Statutory Authority: MS s 115.03; 115.55 <br />History: 32 SR 1347 <br />Published Electronically: October 10, 2013 <br />7080.2300 TYPE III SYSTEMS. <br />A system that deviates from the requirements in parts 7080.2210 to 7080.2240 is a Type III system. <br />Deviations from the standards in parts 7080.2210 to 7080.2240 must be submitted to the local unit of <br />government for approval or denial. However, no deviation is allowed from the following standards and at <br />a minimum a Type III system must: <br />A. employ design flow values in parts 7080.1850 to 7080.1885; <br />B. meet technical requirements of part 7080.2050; <br />Copyright ©2014 by the Rev <br />so <br />of Statutes, State of Minnesota. All Rights Reserved. <br />