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Nations Groundwater Associates <br /> HYDROGEOLOGISTS& GEOLOGISTSr <br /> December 34, 1996 p f I n a o <br /> f <br /> JAN 0 9 1997 <br /> Mr Kenneth Earnest ENVIRONMEN IAL HEALTH <br /> Ultramar Inc PE(�MIT/SERVICES <br /> 525 West Third Street <br /> Hanford, California 93232-0466 <br /> Subject Fourth Quarter 1996 Groundwater Monitoring Report <br /> Beacon Station #419 <br /> 2350 Waterloo Road, Stockton, California <br /> Dear Mr Earnest <br /> This report documents the results of quarterly ground-water monitoring conducted on December 6, <br /> 1996, at the subject site (Figure 1) The monitoring included measurements of depth to ground-water, <br /> subjective analysis for free product, ground-water purging and collection of ground-water samples All <br /> field activities pertaining to events in this report were conducted according to the Ultramar Field <br /> Procedures included in the Attachments <br /> GROUNDWATER ELEVATIONS <br /> Prior to purging, Doulos Environmental personnel collected depth to ground-water measurements <br /> Ground-water level data from July, 1994 to-date are summarized in Table 1 On the basis of the current <br /> measurements, ground-water Bows predominantly to the southwest (Figure 2) at a gradient of less than <br /> 0 01 ft/ft Ground-water levels have decreased an average of approximately 17 feet compared to the <br /> last monitoring event <br /> P O Box 276325 SAcramento,California 95827-6325 (916)361-8095 <br /> (916)361-8096 FAX <br />