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minnesota department of_, health <br /> 717 s.e.detaware st. p.o.box 9441 minnea olis 55440 " • <br /> (612)623.5000 .. ... <br /> February 29, 1984. <br /> 1984. <br /> St. Anthony City Council <br /> c/o David .Childs, City Manager <br /> 3301 Silver Lake Road <br /> St. Anthony; Minnesota 55418 <br /> Gentlemen: <br /> In response to Mr. Child's letter of December 21, 1983, staff of the Minnesota <br /> Health Department and Minnesota Pollution Control Agency reviewed the "New <br /> Brighton-Arden Hills-St. Anthony Areawide" groundwater contamination issue <br /> with respect to the reliability of the St. Anthony water system. This review, <br /> based on analytical results, extent of contamination, location And7z6nstruction <br /> of wells, etc. , has resulted in the following recommendations: <br /> a) Wells- Nos. 4 and 5 .have shown a very low or non-detectable level of contami- <br /> nation and, therefore, appear to be acceptable sources of water supply <br /> at this time. _ <br /> b) Analytical results from well No. 3 have indicated a gradual , but steady, • <br /> increase in the concentrations of' contaminants. T.he: analytical. results ' <br /> obtained during� 1983 indicate that the level of 1,1 dichloroethylene_ in <br /> well No. 3 consistently exceeded'the drinking- water health cr.iteri.a level, <br /> of 0.33 ug/l (ppb). Other contaminants in the well are trending upward <br /> and may also exceed health 'criteria in the near future. In addition, samples <br /> collected from the distribution system, when well No. 3 is operating,- indicate <br /> levels of 1,1 d tchloroethylene,im excess of the health criteria. Based <br /> on the construction of well No. 3, the past analytical results., and the <br /> apparent effect of well No, 3 on wells Nos. 4 and 5, the Minnesota Health <br /> Department recommends well No. 3 be removed from service. <br /> If you have any questions, please communicate with Richard Clark (623-5227) <br /> or Gary ;Englund (623-5330) of, my staff. <br /> :Sincerely yours, - <br /> ister Mary adonna Ashton <br /> :Commissioner of Health <br /> SMMA:GLE:mrs <br /> cc: Dick Clark <br /> Dave Gray <br /> Gary Englund • <br /> Jim Nye <br /> Steve Lee, MPCA <br /> Dr. O'Malley <br /> Ray Thron <br /> an equal opportunity employer <br />