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<br />. <br />City of ~ <br />Elk <br /> <br /> <br />Item 4.6. <br /> <br />MEMORANDUM <br /> <br />TO: <br /> <br />MAYOR AND CITY COUNCIL <br /> <br />STEPHEN ROHLF, BUILDING & <br />ZONING ADMINISTRATOR <br /> <br />DATE: NOVEMBER 13, 2000 :;-~ <br /> <br />FROM: <br /> <br />SUBJECT: TEST RESULTS FROM MONITORING <br />WELLS AT OLD CITY DUMP SITE <br /> <br />Every year since 1989, the City of Elk River has tested three monitoring well at the old <br />city dump site and four adjacent residential wells that are down gradient (down stream) <br />for signs of contamination from this operation. Two of the residences that are normally <br />tested were removed this year for the construction of Tyler Street. <br /> <br />. <br /> <br />The old city dump, which is now part of Hillside Park just south of County Road # 12, <br />was a municipal burn and bury facility that closed in 1972. Routinely, contaminates at <br />levels below the limits requiring any actions be taken have been found in the test wells <br />and at one ofthe residences that was razed this year. It is not conclusive that the <br />contaminates found at the residence were associated with the old dump, but the city <br />installed a dinking water filtration system anyway. <br /> <br />The city continues to test these wells looking for a definite trend in the levels of these <br />contaminates. In the case of a significant upward trend, staff would recommend an <br />increased testing program and would start considering options for remedial action. <br /> <br />Although the levels of contaminates in the test wells have been decreasing each year and <br />this year's testing appears to show a significant decrease, staff is requesting that the city <br />continue this testing. City services being provided to lands down gradient of the old <br />dump will not eliminate the need for all private wells in this area, therefore, caution is <br />warranted. <br /> <br />Attached to this memo is the summary letter from the city's consultant, Liesch <br />Associates, Inc., who conducts the testing. The actual test results are available, if the <br />Council wants to see them. <br /> <br />Staff recommends that the city test the three wells at the old dump and the <br />remaining two residential wells again in 2001. <br /> <br />. <br /> <br />13065 Orono Parkway. P.O. Box 490. Elk River, MN 55330. TDD & Phone (763) 441-7420. Fax (763) 441-7425 <br />