Agenda - Council - 05/27/2003 - Laserfiche WebLink

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I ,I I I I I I I I I I I I ! I I I I I The AUAR should discuss the timeline and necessity of determining the vulnerability of Ramsey well 5 and its potential impact on development within this site. Response: Changes have been made in Items 13, 19 and 20 to reflect these comments. Reference is made to Appendix F, where future appropriations are also addressed. Comment 8.20: The AUAR does not accurately smrm~arize information on the geologic hazards and soil conditions in Item 19. The shallow water table, non-continuou~s clay layer, shallow bedrock valleys, and (especially) the elevated tritium levels in the City wells indicate that shallow groundwater contamination will reach the City wells. In fact, the MDH has determined that Ramsey wells 3 and 4 are vulnerable to shallow groundwater co ntaminatio n (Steve Robertson, MDH Hydrologist, 651-215-1322) and requires the City to address all potential contaminant sources in its wellhead protection plan (Art l)el'sons, MDH. Planner, 507-292-5138). This does not mean that a leaking underground storage tank would likely cause the water fi'om the City well to rapidly become unfit to drink. It means that in a system to uniformly evaluate the vulnerability of public water supply wells - Ramsey xvells 3 and 4 require more attention to contaminant sources than other wells. Recommendation (of the commenter): 4. The statement ill the Summary of Environmental Impact (page 19-3) should be modified to reflect the above comments. Response: The Summary of Environmental Impact in Item 19 has been changed to re['lect the comment. Co m ment 8.2 I' Discussion of this important drinking Water protection program should be focusect in this document instead of distributed throughout the sections of the AUAR. Recommendation (of the commenter): 5.The discussion regarding wellhead fundamentals should be consolidated with discussions in other sections and placed in the water use section/item. Response: Discussion of wellhead protection program fundamentals was expanded and consolidated into the 14/ellhectd Protection section of Item 13. However, discussions of well head protection relevant to Items 19 and 20 remain within those Items. Comment 8.22: The statement on page 13-2 regarding MDH approved wellhead protection plans is not accurate. Currently, the City is completing the second half of its wellhead protection plan that addresses wells 1, 2, 3 and 4. Well 5 is not part of the City's developing plan because it was constructed and activated after a wellhead delineation project commenced. A separate wellhead delineation project will have to be 34-15 -163-