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Sierra Pacific Grount ater Consultants, Inc. <br /> 4 7 HIDROGEOLOGISTS&GEOLOGISTS <br /> October 18, 1995 RECEIVED <br /> OCT 19 1995 <br /> ENVIRONMENTAL HEALTH <br /> Ms. Wendy Wyels, Agricultural Regulatory Unit PERMIT/SERVICES <br /> Central Valley - Regional Water Quality Control Board <br /> 3443 Routier Road, Suite A <br /> Sacramento, California 95827-3098 <br /> Subject Third-Quarter 1995, Quarterly Monitoring Report, Former pureGro/Brea Facility, 1905 <br /> North Broadway Avenue, Stockton, PureGro Site No. 771165, Unocal Order/Contract No. <br /> 34402, Sierra-Pacific Project No. 94-055.04 <br /> Dear Ms. Wyels: <br /> A copy of Sierra-Pacific Groundwater Consultants, Inc.'s Third-Quarter 1995, Quarterly Monitoring <br /> Report, Former PureGro/Brea Facility, 1905 North Broadway Avenue, Stockton, is enclosed for your <br /> consideration. <br /> Very little has changed at the site since May 1995. The water table is dropping, and ground-water <br /> flow will continue to shift to the west as the rainy season approaches. Water samples from MW-5 <br /> (1700 North Sutro Avenue) contained more nitrates and 1,2-DCP than usual. However, no 1,2- <br /> DCP, and very little nitrate,was detected in ground water samples from a monitoring well (MW-11) <br /> located 200 feet South of the PureGroBrea site at 1705 North Broadway Avenue (Geo. F. Schuler, <br /> Inc.). <br /> Please call if you have questions. <br /> Sincerely, <br /> SIERRA-PACIFIC GROUNDWATER CONSULTANTS, INC. <br /> J h Stephe Rapp, CEG-1133 <br /> Senior Engineering Geologist <br /> JSR:jb <br /> Enclosure <br /> c: W.T. Nickerson, Unocal <br /> Michael Infurna, San Joaquin County j <br /> 4911 Windplay Drive.Suite 4 EI Dorado Hills,California 95762 - (916)933-1468 <br /> (916)933-3197 FAX <br />