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<br />. <br /> <br />. <br /> <br />. <br /> <br />'- '., . ~ .,' r <br /> <br />. .., <br /> <br />.'j <br /> <br />') <br /> <br />Page 2 <br />January 21, ] 994 <br /> <br />any evidence of volatile organic compounds (VOCs) in either well. Lead was present <br />slightly above the recommended allowable limit (RAL) for drinking water, however, <br />based on available data Collected to date, Liesch does not believe this is associated with <br />the Custom Motors operation. <br /> <br />To mitigate environmental concerns on the Custom Motors parcel, several items must be <br />considered. <br /> <br />1. Work completed by Liesch was a screening effort to identify possible problem <br />areas and does not delineate the c.omlpete areal extent of CO:1!2.rr'.in::tion. Fu...'"thcr <br />work is needed to accomplish this. <br /> <br />2. . Custom Motors has implemented several management practices to reduce <br />environmental problems but it appears additional items should be considered. <br />These include the use of concrete pads to retain vehicle fluids, conducting certain <br />operations under roof, preventing run on into vehicle disassembly areas and other <br />methods to prevent vehicle fluid loss. <br /> <br />3. <br /> <br />Some soil and possibly limited groundwater remediation may be necessary to <br />achieve environmental standards for residential development. The Minnesota <br />Department of Health has recently established a soil lead level of 300 mg/kg for <br />residential areas. Data from Liesch's work suggests soil lead levels in some areas <br />of the site significantly exceed this value (up to 9400 mg/kg near the garage). <br /> <br />Implementation of additional containment measures, further soil assessment and limited <br />soil clean-up at this time would minimize further contamination and provide expectations <br />of meeting the goal of possible residential use for the Propeny. <br /> <br />maw:ENV/64102/memo12194.Wp <br /> <br />, <br /> <br />B.A. LIESCH ASSOCIATES. INC. <br /> <br />13400 15TH AVENUE NORTH <br /> <br />MINNEAPOLIS. MINNESOTA 55441 <br />