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B.A.LIESCH ASSOCIATES, INC. 13400 15TH AVE. N. MINNEAPOLIS, MN 55441 612/559-1423 FAX 612/559-2202 <br /> MEMORANDUM <br /> TO: THE CITY OF ELK RIVER <br /> FROM: JOHN LICHTER, B.A. LIESCH ASSOCIATES P/1? <br /> DATE: JANUARY 21, 1994 <br /> RE: CUSTOM MOTORS SITE SCREENING AND ASSESSMENT <br /> Recently, Liesch was requested to conduct reconnaissance soil sampling at this property <br /> on Highway 10. Testing and groundwater monitoring of off-site wells adjacent to this <br /> Property was also completed. A report dated November 17, 1993 was submitted which <br /> . summarizes the results of soil testing on the Property. Follow-up groundwater <br /> monitoring was completed in December 1993. This work was initiated based on the <br /> City's desire to determine environmental conditions on the Property and how these <br /> conditions may affect potential future land use. <br /> Assessment activities to date appear to indicate environmental impacts are predominantly <br /> limited to surficial soils in high activity areas, including, but not limited to, the engine <br /> and transmission storage area, vehicle processing areas and traffic pathways. Soils in the <br /> vicinity of typical automobile storage areas do not appear to be problematic, as field <br /> screening measures and analytical test results did not indicate parameters above detection <br /> limits, although some minor staining was observed in these areas. <br /> Additional soil sampling and analytical testing would be required to confirm <br /> reconnaissance soil sampling findings, as well as to further define the extent and <br /> magnitude of impacts already identified, in particular, the processing garage and <br /> engine/transmission storage area. Additionally, TCLP analyses may be required on soils <br /> with high lead levels to evaluate mitigation and disposal options (to determine if the soils <br /> would be regulated as hazardous). There is also the possibility of localized groundwater <br /> contamination suggested by data from the engine/transmission storage area, permeability <br /> of soils, and anticipated shallow depth to ground water. <br /> • To evaluate off-site groundwater impacts, Liesch tested two wells on the Boelter property <br /> north and anticipated downgradient of the Custom Motors site. These tests did not find <br />