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it 'MZsMw <br /> �= Working To Restore Nature <br /> 9. 33 <br /> 1710 Main Street `' <br /> Escalon, CA 95320 <br /> Phone (209) 838-3507 <br /> FAX (209) 838-3509 <br /> August 10, 1993 <br /> Ms. Mary Meays <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P O Box 2009 <br /> Stockton, CA 95201 <br /> RE: 1993 Second Quarter Groundwater Monitoring Activities/Remediation System <br /> Performance Report, Tn-Valley Growers, 26200 Noweq Road, Thornton, CA <br /> Dear Ms Meays: <br /> This letter report updates RESNA Industries' (RESNA's) activities at Tn-Valley Growers' <br /> Thornton plant (Figure 1) dunng the second quarter of 1993 Activities during the quarter <br /> included monitoring of groundwater, sampling for dissolved hydrocarbons from two of the <br /> monitoring wells on site, treating all purge water from the monitoring wells through the <br /> remediation system, operation of the remediation system, and analysis of samples from the <br /> treatment system influent(well MW4) and carbon filter effluents Remediation systern operation <br /> began on May 13, 1991. <br /> Groundwater MonitQ"m <br /> Groundwater monitoring was conducted in April and June Groundwater gradient maps illusuate <br /> a cone of depression and an area of influence created by pumping of the groundwater in <br /> monitoring well MW4 (Figures 2 and 3) The water table (as measured in all wells except <br /> M -4) has dropped an average of 2 85 feet since ?larch 1993 The groundwater moniton:iMW-4) g <br /> data are summarized in Table 1 Groundwater monitoring logs are included in Attachment 1. <br /> QRTF-RLY%2Q%I1R1993 FNL <br />