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r—Aoola �45 $ <br /> California Regional Water Quality Obntrol Board <br /> Central Valley Region <br /> Robert Schneider,Chair + <br /> Terry Tamminen Arnold <br /> Secretaryfor Sacramento Main Officegger <br /> �� ,�S warzene <br /> Environmental 11020 Sun Center Drive#200,Rancho Cordova,California 95670-6114 Governor <br /> Protection Phone(916)464-3291 •FAX(916)464-4645 <br /> http://www.swrcb.ca.gov/mgcb5 JUL 12 2004 <br /> ENVIRONMENT HFAI rH <br /> 8 July 2004 PERMIT/SERVICLS <br /> Robert D. Torres, Vice President of Operation <br /> Trinchero Family Estates <br /> p}� Sutter Home Winery, Inc. <br /> P. O. Box 248 1 g U U —1 S0.c o b �rA Cly <br /> St. Helena, CA 94574-0248 Wd-; Of 5 A`f0 <br /> GROUNDWATER SUMMARYREPORTREVIEWAND COMMENTS, SUTTER HOME WINERY, <br /> SAN JOA QUIN COUNTY <br /> Staff has completed its review of Groundwater Monitoring Summary Report for Sutter Home Lodi <br /> Winery, submitted on your behalf by Condor Earth Technologies Inc. The submittal of the report was a <br /> requirement of Provision G.2.e of Waste Discharge Requirements (WDR) Order No. R5-2002-0034. <br /> The report summarizes and analyzes data collected for the purpose of evaluating whether wastewater <br /> practices at the facility have resulted in degradation of underlying groundwater. Data collected from <br /> seven groundwater monitoring wells from March 2002 through August 2003 was evaluated. The data <br /> does not clearly indicate that groundwater degradation has occurred. However, the data does suggest <br /> that there are elevated levels of process wastewater constituents of concern in portions of the site. The <br /> cause of those elevated levels is not clear,but they could be related to wastewater practices at the <br /> facility. <br /> Therefore, Staff is hereby requesting additional information. Please provide a response to the following <br /> comments: <br /> • Several of the figures in the report show a monitoring well designated as MW-1. This well is not <br /> discussed in the report. Please describe the well and discuss its significance. <br /> • The report provides data indicating the depth of groundwater with reference to mean sea level, <br /> but does not indicate the approximate depth of groundwater below ground surface. Please <br /> provide information indicating the general range of groundwater depth below ground surface <br /> throughout the year. <br /> • Provide a detailed discussion of historical wastewater disposal practices on the site. There <br /> appears to be an increasing trend in NO3-N concentrations in GW-1. Please discuss. <br /> • The report indicates that elevated concentrations of nitrate as nitrogen (NO3-N) are present in <br /> GW-4, GW-5, and GW-7, and elevated concentrations of total dissolved solids (TDS) are present <br /> California Environmental Protection Agency <br /> 0 Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. <br /> For a list of simple ways you can reduce demand and cut your energy costs,see our Web-site at http9/www.swrcb.ca.gov/rwgcb5 <br />