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<br /> Mr. Kevin Ring<>.-'ald 8ft~ ,
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<br /> July I, 1997 i I
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<br /> I 4. The Well Code requires that all wells be protecled from possible backflow or
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<br /> backsiphonage of a contaminant into the well. If any irrigation well is installed, such as !
<br /> to inigate la"'l1, that well must have an approved back flow prevention device if the well I I
<br /> will be used for application of agriculrural chemicals (chemigation). No closs-connection
<br /> is allowed between an irrigation well and a water supply well unless an approved
<br /> backflow prevention device is maintained on the system. If any well, including an , I
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<br /> inigarion well, ",ill be used to fill a tank, such a.'i for mLxing of an agricultural ~hemical ,
<br /> (such as a p<;sticide), the well must either be protected with a backflow prevention device !
<br /> , or maintairt an air gap or separation of at least twice the pipe diameter. For further I
<br /> I> information, please contact Ron Thompson at 612/215-0831.
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<br /> " 5. Please note that the Minnesota Plumbing Code requires that a buried sewer or drain be i I
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<br /> , located at least 10 feet from a buried water service line, or if this distance cannot be \
<br /> , maintained,Jhe installation and malerials must comply with Minnesota Rules, ::
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<br /> .: i' Chapter 4715.1710. subp. 2 (Minnesota Plumbing Code). Questions should be directed to " I
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<br /> ", Jr the local pluinbing administrative authority or the state plumbing regulation prbgram at . ,
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<br /> , I.. 612/215-0836. i
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<br /> I' 6. Minnesota S~atutes, section 1031.205 prohibits the placement of buried sewers, 'or any
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<br /> ;. I! other regula)x:d source of contamination, any closer to an existing water 'supply: ~ell .
<br /> . ~ ' (active or Wiused, unsealed) than the distances prescribed by the Well Cbde. :. . ~
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<br /> ;, The Well C~e specifies the following setback distances between water impply!~ns lind '.
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<br /> buried sewers, including building drains cormected to the building sewer: i . . I
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<br /> .;'; .=.. . :50 feet: A )~ll.nimum setback distance of at least SO feet must be maintained bCtween. a : .
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<br /> .. .~: Ij well and a !:llJri:ed sewer if the sewer: . ':.'. .., I
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<br /> a. is a colJi:lr;tor ot municipal sewer;. . .
<br /> b. .is pr~~d and .serves more than a single-family residence; .' :: . ~
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<br /> ',. . c. is open-ji>iIited; or . . ." i: . .
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<br /> d. is Const#ct~ of materials that do not meet the material, installation,' wid t~g . '.
<br /> . ;: ~ .;.. requirezilents in the Minnesota Plumbing Code. .: . ; :
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<br /> . . ~~: I~- 20 :reet: T% SQ-foot separation distance may be reduced to 20 feet if ~e ~~i:necitS the
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<br /> . , material, in$t8.llation, and testing requirements in the Minnesota Plum~ Co~~ AN)) it '..
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<br /> i a.a burie~igmvity sewer that serves a single-family residence or a sin~e facilitY sU<\h ~. .'
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<br /> a bUSindT,chUfC~ .school, or single commercial property, (This d9$nut ~Iude '.
<br /> Ii . . collect ... or mumclpal sewers); or : ; . : . . . ...1 i:1
<br /> Ir b. a burie&;lprtlssurized sewer that serves a single-family residence. . i .; . ..
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