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�9 <br /> i <br /> Sierra- aci qF�Groundwater Consultants, Inc. <br /> HYDROGEOLOGISTS & GEOLOGISTS <br /> 4 <br /> rt, �r.n ii i 712 PH 1: 48 <br /> ,j <br /> April 19, 1994 <br /> Mr. Michael Infurna, Senior Registered Environmental Health Specialist <br /> San Joaquin County Public Health Services <br /> Environmental Health Division, Unit 4 " <br /> P.O. Box 2009 <br /> Stockton, California 95201 <br /> Subject: Quarterly Monitoring Report, Unocal Order Contract No. 3400001179 <br /> Sierra-Pacific Project No. 92-033 <br /> - N <br /> Dear Mike: <br /> Sierra-Pacific's first-quarter-1994 Quarterly Monitoring Report for the Washington Street Facility, <br /> Stockton is enclosed for your consideration. The enclosed report summarizes existing water level <br /> and chemistry data. The report is late because some of the water samples were rerun to verify <br /> significant results. A report from our latest soil investigation will be ready for regulatory review <br /> in about two weeks. <br /> Please call if you have questions. Thanks for your help and suggestions. I intend to call you about <br /> additional Stockton environmental work during the first week of May. <br /> i <br /> Sincerely, <br /> SIERRA-PACIFIC GROUNDWATER CONSULTANTS, INC. <br /> John Stephen Rapp, CEG-1133 <br /> Senior Engineering Geologist <br /> Enclosure <br /> (916)933-1468 <br /> 4911 Windplay Drive,Suite 4 EI Dorado Hills,California 95762 (916)933.3197 FAX <br />