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CO <br /> Kennedy/Jenks Consultants <br /> Engineers and Scientists <br /> i2 August 1991 51% qqr� on Plaza, Tenth Floor <br /> 9 8 �.y� �� 303 Second Street <br /> r co,California 94107 <br /> Mr. Ray Borges 415-243.2150 <br /> Public Health Services Sar. Joaquin County AUG 1 9 )��) FAX 415-896-0999 <br /> Environmental Health Division ENVIP,ONMENTALHEALTH <br /> PO Box 2009 PERMIT/SERVICES <br /> Stockton, California 95201 <br /> Subject: Lincoln Village Center, Destruction of Municipal Wells <br /> K/J 900109.40 <br /> Dear Mr. Borges: <br /> Kennedy/Jenks Consultants (K/J) , as consulting engineers for Lincoln Properties, <br /> Ltd. (LPL) , requests the opportunity to review and comment on the proposal for <br /> the destruction of the San Joaquin County wells LVMD1, LVMD2, and LVMD6. As we <br /> discussed, LPL and K/J are currently investigating groundwater contaminated by <br /> volatile organic compounds at the Lincoln Village Center. LVMD1, LVMD2, and <br /> LVMD6 are within the contaminated area. <br /> Our investigations to date have determined the existence of three water bearing <br /> zones beneath the site. The deepest of these three zones (Zone "C") is believed <br /> to be the primary municipal supply aquifer in the area. Our investigations <br /> indicate that LVMD1, LVMD2, and LVMD6 are drilled and constructed in such a way <br /> that there is the potential for each of these wells to provide conduits for the <br /> vertical migration of contaminated groundwater. It is therefore imperative that <br /> a thorough review of the proposed destruction techniques (ie: ripped casing <br /> pressure grouted zones) be performed to insure that these three wells do not <br /> become continual pathways for the flow of contaminated groundwater into the lower <br /> water bearing zones. <br /> It is in the best interests of the public, the County, and LPL to protect this <br /> aquifer from contamination. We would like an opportunity to become involved in <br /> the review and comment process, and herebv request a copy of the well destruction <br /> proposal before it has been approved. If you have any questions please call <br /> Gerry Nakano or me at (415) 243-2150. <br /> Very truly yours, <br /> KENNEDY/JENKS CONSULTANTS <br /> Michael Tognolini <br /> Project Engineer <br /> MTTrtvc <br /> cc: Mr. Michael Higgins, RWQCB <br /> Mr. Wil Smith, Lincoln Properties, Ltd. <br /> Mr. Michael Donovan, Ware & Freidenrich <br />