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SM component <br />Sensitive well' <br />Water supply we[12 <br />Community public well' <br />Sewage sump with a -� 100 <br />oallodi -capacity,. lh-cgimpliance. <br />With MN R. ch.4$154• <br />20 <br />20 <br />50 <br />Subsurface dispersal.fields <br />100 <br />So <br />50 <br />Subsurface dispersal field,. <br />system design fiow.> 10,000 <br />d. <br />600 <br />300 <br />300 <br />Subsurface dispersal field. <br />serving a facility with infectious <br />or pathololfital wastes <br />300 <br />150. <br />150 <br />watertightsand orpeat filter, <br />or constructed wetland <br />50 <br />so <br />50 <br />Disposal area -for water <br />treatment backwash <br />100 <br />5o <br />50 <br />16ften referred to as a `shallow' well. Does not have 50' or more of watertight casing or does not have watertight casing that penetrates <br />::10' or.mo're of a confining layer <br />''Includes Well' used to supply drinking water, lrrigation..Wells, wells supplying processing water, and drive point wells <br />Vrovides.Water torl.5 or more year-round residences.or dwelling units <br />4Does.not apply to collector sewer, municipal levJe'r; sewer handling infectious or pathogenic' wastes, onto community public wells <br />sinciudes.all Type IN soil dispersal systems <br />Setbacksfrom abandoned septic systems and wells. <br />Unless specified in the local ordinance, a setback distance is not required between a-prope.rly.-abandoned and <br />sealed well acid a septidsystem. A setback is also not required between a properly abandoned septic.system and <br />a new well. However, setbacks stiill.apply if the septic.system was abtabdohed without these. proper procedures: <br />• Sept;ktank, holdingtank,.sewage sump, or other sewage tank has been -pumped out, disconnected, and <br />filled with soil and rock,-is.4rushed and filled; or pumped out and completely excavated and removed. <br />• Cesspool, seepage pit,, leaching pit, or dry well has been pumped and the entire structure*has been <br />excavated and removed. <br />• All subsurface dispersal field piping has been excavated and removed. <br />• Any visibly contaminated soils or material within, beneath, and surrounding the structure are excavated <br />and removed.. <br />• Any Contaminated materials, soils, or other excavations have been disposed of in accordance with state <br />and local requirements. <br />Well setbacks for sewers <br />Minn. R. 4125.4-45041se-speclfies setbacks. for the installation of a new buried sewer, arid the replacement of an <br />existing buried. sewer. Sewer is defined as a pipe or conduit carrying.sewage, or into which sewage can back up, <br />including floor drain and traps. <br />Setback variances <br />Local governments can't issyevariances for well setback distances. Only the :MDH .can issue variances, or.the <br />MDH and a county or -city with a delegated well program. The MDH may grant.setback variances if equWlent. <br />protection to*nearbywells can be provided through favorable site characteristics, special construction, or other <br />conditions. <br />Page 2 of 2 June>2019 I wq-wwists4-36. <br />i <br />