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Sierra Pacific Groundwater Consultants, Inc. <br /> HYDROGEOLOGISTS&GEOLOGISTS <br /> June 15, 1995 <br /> Mr. W.T. Nickerson, Project Manager <br />- - - Unocal Corporate Environmental Remediation & Technology <br /> 2000 Crow Canyon Road, Suite 450 <br /> San.Ramon, California 94583 <br /> Subject: Sierra-Pacific Groundwater Consultants, Inc., Second-Quarter 1995, Quarterly <br /> Monitoring Report, 2130 West Washington Street, Stockton, Unocal Order/Contract: <br /> 3400001179, Sierra-Pacific Project No. 92-033.04 <br /> Dear Mr. Nickerson: <br /> The second-quarter 1995 monitoring report for 2130 West Washington Street, Stockton is enclosed. Not <br /> much has changed. Groundwater is still flowing west-northwest. Nitrates are still coming in from the <br /> east, and the concentrations at MW-5 have increased. In cooperation with the RWQCB, Sierra-Pacific <br /> prepared a potentiometric map of the Washington Street area that included water level data from five <br /> California Farm Supply wells (east neighbor). We had some difficulty understanding the Cal farm data. <br /> It is not presented herein. <br /> Copies of the quarterly monitoring report have been sent to concerned parties. Please let me know if <br /> you have questions or further directives. <br /> Sincerely, <br /> SIERRA-PACIFIC GROUNDWATER CONSULTANTS, INC. <br /> Joh Stephen pp, CEG-1133 <br /> Senior Engineering Geologist <br /> JSR/jb <br /> O <br /> Enclosure <br /> JUN 2 p <br /> 1995 <br /> cc: Wendy Wyels, RWQCB <br /> Michael Infuma, San Joaquin County ENVIRONMENTAL HEALTH <br /> Jan Wagoner, Unocal PERMIT/SERVICES <br /> Jack Holm, Cargil <br /> Charlene Wall, Port of Stockton I <br /> (916)933-1468 V <br /> 4911 Windplay Drive,Suite 4 EI Dorado Hills.Califomia 95762 (916)933-3197 FAX <br />