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G <br /> • Mr. Brian Cobb <br /> December 14, 1995 <br /> Page 2 <br /> Summary of Findings <br /> Field data collected during the sampling event indicate groundwater elevations have decreased <br /> relative to last quarter. Groundwater was identified as flowing to the north-northwest under <br /> an average gradient of 0.003 feet per foot. Analytical results for petroleum hydrocarbon <br /> constituents have remained approximately the same or have decreased compared to the <br /> previous quarter The laboratory results for the field blank collected at well MW-2 indicated <br /> low concentrattons of benzene and total xylenes. The presence of these constituents could be <br /> due to field and/or laboratory procedures Brown and Caldwell will review the sampling <br /> procedures prior the next sampling event A summary of the depth-to-water measurements, <br /> calculated groundwater elevations, and analytical results are included in Table 1. A <br /> groundwater contour map, identifying the primary groundwater flow direction on September <br /> 15, 1995 and the analytical results, is included as Figure 1 Field notes, the chain-of-custody <br /> form and the laboratory data sheets are included in Attachment A. <br /> If you have any question regarding the information presented herein, please contact me at <br /> your earliest convenience. <br /> • Sincerely, <br /> BROWN AND CALDWELL <br /> Todd Miller <br /> California Registered Geologist No 6328 <br /> TM/JL:ikg <br /> Attachments <br /> cc: Mr John Reeves, Attorney at Law <br /> Ms. Linda Turkatte, San Joaquin County Public Health Services Department <br /> ! Mr. Steve Camp, Brown and Root <br /> I I I I I <br /> I <br /> I ' <br /> I <br /> I <br /> 1 <br /> I , <br /> I I i I <br /> ottONS+E.u.xEUlao678 IQ-3996 was <br /> HBI"a'Z I Ili i' I I I I I I <br /> II I' I I E I I I I I <br /> I I <br /> I [f <br /> „ III `III�I <br /> r �I I' EI f I I! i VI V I ( Gfi,! ,IN c 4I1�W III Iy,EI' LVIEI � I� IEiI 'I li E I Ill iii III II V,f.I Irl II I III I it IE 'VI I ( I I ' , <br />