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��Sgrra-Pacific Groundwater Consultants, Inc. .' <br /> r (SiIfE-i{+ ICF HYDROGEOLOGISTS&GEOLOGISTS <br /> N OCT -5 PM 2: 57 <br /> : . <br /> 3 October 1994 <br /> Ms. Christine M. Holm, Agricultural Regulatory Unit <br /> Central Valley - Regional Water Quality Control Board <br /> 3443 Routier Road, Suite A <br /> Sacramento, California 95827-3098 <br /> Subject: Third Quarter 1994, Quarterly Monitoring Report(11 August 1994 Event),Former <br /> PureGro Facility at 2130 West Washington Street, Port of Stockton, California <br /> Sierra-Pacific Project No. 92-33-4 <br /> Dear Ms. Holm: <br /> The latest Washington Street quarterly monitoring report is enclosed for your consideration. <br /> Analytical results and water level data indicate that very little has changed at the site since <br /> we issued the last report. The water table has dropped a few feet since last spring, but we <br /> still have 190 ppm nitrate (NO3) in our up-gradient well, and water samples from the new <br /> down-gradient well (MW-7) contain only traces of nitrogen (N). I prepared a series of <br /> ground-water gradient maps (Figures 4 through 7) to summarize available data. <br /> Sierra-Pacific has arranged to consolidate and remove several drums of non-hazardous soil <br /> cuttings from the site. Please let me know if you have any questions or directives. <br /> Sincerely, <br /> SIERRA-PACIFIC GROUNDWATER CONSULTANTS, INC. <br /> Joh StepheRapp, CEG-1133 <br /> Senior Engineering Geologist <br /> cc. W.T. Nickerson, Unocal Jan Waggoner, Unocal <br /> Jack Holm, Cargill Dale Matthews, PM Ag Products <br /> Charlene Wall, Port of Stockton Michael Infurna, San Joaquin County <br /> ;E <br /> Enclosure <br /> (916)933-1468 <br /> 4911 Windplay Drive,Suite 4 EI Dorado Hills,California 95762 (916)933.3197 FAX <br />