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Sierra-Pacific Groundwater Consultants, Inc. Y Y <br /> Geologists, Engineers, and Compliance Specialists -, -LZ <br /> February 25, 1997t FE" 23 AM 11: 43 <br /> Ms. Wendy Wyels, Agricultural Regulatory Unit <br /> Central Valley - Regional Water Quality Control Board <br /> 3443 Routier Road, Suite A <br /> Sacramento, California 95827-3098 <br /> Subject: Analytical Data Table Corrections, Fourth-Quarter 1997 Monitoring Report, Former <br /> PureGro Facility at 1905 North Broadway Avenue, Stockton, PureGro Site No. 771165, <br /> Unocal Order/Contract: 34402-1, Sierra-Pacific Project No. 94-055 <br /> Dear Ms. Wyels: <br /> Thank you for reviewing the fourth-quarter 1996 Broadway Avenue Quarterly Monitoring Report <br /> thoroughly. The errors and omissions on Tables 3 and 4 arose from use of an un-edited computer data file <br /> in the assembly of the report. These errors were not present in the edited file which was found after receipt <br /> of your review letter. Data corrections are shaded (5%) on the enclosed tables for your convenience. The <br /> enclosed table corrections will be reflected in the First Semi-Annual 1997 Monitoring Report. <br /> We are scheduled to collect water samples at the Broadway site in March. The March sampling event will <br /> be the first sampling event since the down-gradient point-of-compliance well (MW-9) was installed and the <br /> evaporation ponds were paved. It will also be the first sampling event to follow a 100-year storm. <br /> We look forward to seeing you on site, and will notify you of our sampling schedule as soon as possible. <br /> Please call either John Rapp or me if you have additional questions or directives. <br /> Sincerely, <br /> SIERRA-PACIFIC GROUNDWATER CONSULTANTS, INC. <br /> CML� <br /> Eric D. Chase, CEG <br /> Senior Engineering Geologist <br /> JSR/jb <br /> Enclosures <br /> C. Michael Infurna, San Joaquin County Environmental Health Department <br /> W.T. Nickerson, Unocal <br /> Jan Wagoner, Unocal <br /> Nancy Bishop, Western Farm Services <br /> John Rapp, Sierra-Pacific <br /> (916)933-1468 <br /> 4911 W indplay Drive,Suite 4 EI Dorado Hills.California 95762 (916)933-3197 FAX <br />