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I_A1 jil <br /> TWA <br /> ` q Working To Restore Nature <br /> P111 1 09 <br /> 1710 Main Street <br /> Escalon, CA 95320 <br /> Phone (209) 838-3507 <br /> FAX (209) 838-3509 <br /> April 26, 1994 <br /> Ms Margaret Lagono <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P O Box 2009 <br /> Stockton, CA 95201 <br /> Subject Holt Bros , Stockton Facility <br /> 1541 W Charter Way, Stockton, California <br /> Site Code 1988 <br /> t� <br /> Dear Ms Lagono <br /> This letter is to serve as an addendum to RESNA Industries (RESNA's) Soil Remediation <br /> Workplan dated January 14, 1994 This addendum was prepared at the request of San Joaquin <br /> County Public Health Services, Environmental Health Division (PHS/EHD) in correspondence <br /> dated February 7, 1994 <br /> Excavation <br /> If field evidence dunng excavation activities suggests soil contamination in the vicinity of <br /> monatonng well MW 1 extends beneath the saturated zone, excavation will continue in an effort <br /> to remove as much contaminated soil as practically possible Free product, if present, will be <br /> removed from groundwater which flows into the excavation pit However, based upon March <br /> 1994 groundwater monitoring data, only 0 02 feet of free product exists on the water surface, <br /> which may be insufficient to enable free product removal <br /> Monitoring well MW 1 is within the area to be excavated and will likely require abandonment <br /> RESNA proposes to excavate the upper portion of the well to a minimum of 20 feet below grade <br /> (top of sand pack) and subsequently pull out the remaining well casing The filter pack should <br /> cave around the void created by removal of the casing The excavation will subsequently be <br /> 40 filled with native and/or imported material <br /> 1500771REPORT51WPA 0494 FNL <br />