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California Renal Water Quality CAtrol Board <br /> Central Valley Region <br /> iony ;i <br /> Robert Schneider,Chair <br /> Winston H.Hickox Gray Davis <br /> Secretary for Sacramento Main Office Governor <br /> 6nvironnnental Internet Address: http://www.swreb.ca.gov/—rwgcb5 <br /> Protection 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Phone(916)255-3000•FAX(916)255-3164 <br /> 5 December 2001 <br /> Ms. Nancy Volpi <br /> A Volpi & Sons <br /> P.O. Box 58 <br /> Holt, CA 5234 <br /> REVIEW OF WORK PLAN ADDENDUM, VOLPI FARMS, HOLT, SAN JOAQUIN <br /> COUNTY <br /> We have reviewed the 10 September 2001 Work Plan Addendum (WPA) and the <br /> 13 September 2001 Groundwater Monitoring Report— Third Quarter 2001 (GMR) submitted by <br /> Advanced GeoEnvironmental, Inc. on behalf of Volpi Farms for its operations along State <br /> Highway 4 near Holt in San Joaquin County. The WPA contains provisions to install a single <br /> monitoring well downgradient from MW-1. The GMR contains results for samples collected on <br /> 20 August 2001, which show that MW-1 contains the highest pollutant concentrations. We have <br /> the following comment on these documents. <br /> Our 7 May 2001 letter states "Volpi needs to submit a ... work plan to define the extent of <br /> groundwater contamination downgradient from MW-1." The six monitoring wells now located <br /> at this site define the lateral extent of pollution upgradient (to the north) of the source area, but <br /> not downgradient (to the south). The WPA proposes to install a single downgradient monitoring <br /> well about 20 feet south of MW-1, according to Figure 3 in the GMR. Although this may not <br /> define the southern extent of the plume, Volpi may proceed with the installation of MW-7 with <br /> the understanding that additional wells might still be needed. <br /> By 30 January 2001, please submit a well installation report and if necessary, recommendations <br /> including a time schedule to further define the groundwater pollution at this site. <br /> If you have any questions, you may contact me at (916) 255-3082. <br /> M X ERRA <br /> Private Sites Cleanup Unit <br /> a 2 <br /> cc: Mr. Mike ma, San Joaquin County Health, Stockton <br /> Ms. Jeanne Zolezzi, Herum, Crabtree, Dyer, Zolezzi &Terpstra, Stockton <br /> Mr. William Little, Advanced GeoEnvironmental, Inc., Stockton <br /> California Environmental Protection Agency <br /> Ca Recycled Paper <br /> The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. For a list of <br /> simple ways you can reduce demand and cut your energy costs,see our Web-site at http://www.swreb.ca.gov/rwgcb5 <br />