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LAWRENCE <br /> & ASSOCIATES <br /> ENGINEERINGGEOLOGY <br /> ( I Y I L ENGINEERING <br /> GROUND-WATER HYDROLOGY 003287.00 <br /> Task 9 <br /> September 30, 2004 <br /> Ms. Kim Schwab 0 C ( 15 2004 <br /> California Regional Water Quality Control Board <br /> Central Valley Region ENVi��.i;i ?`�Ii::i1T HEALTH <br /> 11020 Sun Center Drive#200 PEWMII/SERVICES <br /> Rancho Cordova, CA 95670-6114 <br /> Dear Ms. Schwab: <br /> SUBJECT: ADDENDUM TO ANNUAL 2003 GROUNDWATER-MONITORING <br /> REPORT,FOX RIVER PAPER COMPANY, RIPON, CA <br /> Introduction <br /> This letter is an addendum to Lawrence & Associates' (L&A)Annual 2003 Groundwater <br /> Monitoring Report For Fox River Paper Company's Ripon Facility, Ripon, California, <br /> dated January 28, 2004. This addendum addresses Regional Water Quality Control Board <br /> (Regional Board) comments made in correspondence to Mr. Pat Mickelson of Fox River <br /> Paper Company (FR), Ripon Mill, dated July 26, 2004. <br /> A compact disk containing historical groundwater-quality data files (in Microsoft Excel) <br /> is attached. <br /> Compliance Record <br /> FR is currently in a corrective action monitoring program per Waste Discharge <br /> Requirements (WDR), Order 5-01-148, dated 14 June 2001, and is working on <br /> establishing background levels for constituents of concern (COCs) in order to propose <br /> water quality protection standards for the aquifers underlying the FR site. <br /> During the past year, no changes in the process or disposal of plant-process water has <br /> occurred at FR, nor has FR's effluent exceeded total dissolved solids (TDS) levels set <br /> forth in their WDRs. <br /> Five Year Water-Quality Report <br /> L&A's prepared a Five-Year Water-Quality Report(Five-Year Report), dated March 20, <br /> 2003, which concluded that groundwater-quality beneath the site has generally improved <br /> over the past five years. A comparison of water-quality results with those presented in <br /> the previous Five-Year Report(April 1997) shows more onsite monitoring wells with <br /> decreasing or stable TDS trends (44.4% and 3 1.1%, respectively) than increasing TDS <br /> trends (24.4%; Five-Year Report, page 7). Also, a comparison of Stiff diagrams shows <br /> more monitoring wells with less-degraded water quality than observed in the previous <br /> 2001 Market Street • Room 523 • Redding, California 96001 - (530)244-9703 - fax (530)244-5021 • info@lwrnc.com <br />