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Sierra-Pacific Groundwater Consultants, Inc. <br /> Geologists, Engineers, and Compliance Specialists <br /> May 13, 1997 <br /> Ms. Wendy Wyels <br /> Agricultural Unit <br /> Central Valley - Regional Water Quality Control Board <br /> 3443 Routier Road, Suite A <br /> Sacramento, California 95827-3098 <br /> Subject. Errata, First Quarter 1997 Quarterly Monitoring Report, Former PureGro Facility at 1905 <br /> North Broadway Avenue, Stockton, PureGro Site No. 771165, Unocal Order/Contract: <br /> 34402-1, Sierra-Pacific Project No. 94-055 <br /> Dear Ms. Wyels: <br /> Yesterday afternoon we mailed out the subject report. Yesterday evening in review of the report, I noted <br /> the following two errors. On page 7, second paragraph, the second sentence should read "The ground-water <br /> flow direction has shifted approximately 2° southwestward in the well array since early January 1997, and <br /> now flows south 33' west." Please note that the correct information is presented in the Executive Summary. <br /> On Table 7, the heading for the third column should read "CLS Labs". <br /> Please make a note of these errata, and feel free to call me if you have any questions. <br /> Sincerely, <br /> SIERRA-PACIFIC GROUNDWATER CONSULTANTS, INC. <br /> � �) , � <br /> Eric D. Chase, CEG <br /> Senior Engineering Geologist <br /> EDC/jb <br /> C. Michael Infurna, San Joaquin County Environmental Health Department <br /> W.T. Nickerson, Unocal <br /> Jan Wagoner, Unocal <br /> John Rapp, Sierra-Pacific <br /> (916)933-1468 <br /> 4911 Wordplay Drive,Suite 4 EI Dorado Hills,California 95762 (916)933-3197 FAX <br />