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X. <br /> r <br /> WATERWORK CORP. <br /> A RESNA Company <br /> Environmental Solutions <br /> Through Applied Science, <br /> Engineering&Construction <br /> 1710 Main Slrect <br /> Escalcn, CA 95320 <br /> Phone: (209) 836-3507 <br /> Fax: (209)83A-3509 <br /> November 25, 1991 <br /> Ms. Mary Meays <br /> San Joaquin County Public Health Services NOV 2 7 ""1 <br /> Environmental Health Division (;1,`IRi'i,;E:i ; <br /> ..0, Box 2009 <br /> f Stockton, California 95201 F` � <br /> 1 RE: Monthly Report; Groundwater Monitoring Activities/Remediation System <br /> Performance Report, Tri-Valley Growers, 26200 Nowell Road, Thornton, <br /> s California. <br /> Dear Mary: <br /> N Industries (RESNA s) activities at Tri-Valley Growers'letter report updates RES <br /> Thornton plant(Figure 1)during the month of November, 1991. Activities this month included <br /> monitoring of groundwater, replacing carbon filter 1, and operation and maintenance of the <br /> remediation system. <br /> The remediation system operation, flow rate and drawdown was checked on November 11, <br /> 1991. The system is running and continues to pump at a rate of approximately 1.4 liters per <br /> minute. <br /> Groundwater monitoring was conducted on November 11, 1991. The groundwater gradient map <br /> reflects a depression created by pumping of the groundwater in monitoring well MW4 (Figure <br /> 2). The cone of depression around the pumping well is demonstrated in this map. The <br /> groundwater monitoring data is summarized in Table 1. <br /> _..Tv0T1191XP <br /> --- -, <br />