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Martin Thorpe <br /> #. <br /> 16 October 1987 74 WFISSASSOCIATES <br /> e <br /> TABLE 3. Water Level Data, 204 E. Lodi Avenue, Lodi., California <br /> Top-of-Casing Depth <br /> Elevation Date to Water Elevation <br /> well No. (ft above MSL) Recorded Water (fr above MSL) <br /> MW-1. 149.9E 25 August 87 50.40 -0.42 <br /> 8 September 87 49.83 0.15 <br /> 10 September 87 49.97 0.01 <br /> MW-2 50.14 25 August 87 50.10 0.04 <br /> 8 September 87 49,28 0.86 <br /> 10 September 87 49.50 0.64 <br /> MW-3 49. 76 29 August 87 50.21 -0.45 <br /> _ 8 September 87 49.58 0. 18 <br /> 10 September. 87 49.71 0.05 <br /> Water level data suggest that pumping of City of Lodi Municipal Well <br /> No. 1 may influeurc ground water flow beneath the site. For data recorded on <br /> 25 August, the water table elevation seen in MW-3 is lower that the water <br /> table elevation in MW-1 . Water levels recorded on 8 September. and 10 <br /> September indicate a higher elevation of MW-3 relative to 4W-1 on these <br /> dares. Fran Forkas of the LDPW has indicated that Municipal Well No. 1 was <br /> pumped for approximately 4 hours prior to the 25 August Water lev::l <br /> measurements , and that the well was not pumped prior to the 8 and 10 Sep eaber <br /> measurements. This suggests that the lower water level seen in MW-3 on 25 <br /> Auy.ust could have been caused by the pumping of the Muncipal well and that the <br /> water producing zones tapped by Municipal Well. No. 7 may bc: in hydraulic <br /> communication with the water-bearing materials beneath 204 East Lodi Avenue: <br /> -` CONCLUSIONS <br /> Laboratory analyric results for soil samples collected from MW-1 indicate <br /> that hydrocarbons are present in unsaturated soil beneath the tank <br /> excavation. California Department of Health Services (DNS) and California <br /> Regional Water Quality Control Board - Central Valley Region (WQCB) recommend <br />