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r <br /> Mill <br /> Creek <br /> Associates Water Resource anq Environmenntgl cunnilting <br /> 15myXg <br /> January 4 , 1994 JAN 13 1995 <br /> ENVIRONMENTAL HEALTH <br /> Linda Turkatte PERMIT/SERVICES <br /> San Joaquin County Environmental Health Division <br /> P.O. Box 388 <br /> Stockton, CA 95201-0388 <br /> RE: 102 S. Wilson Way, Stockton, CA <br /> Dear Ms. Turkatte, <br /> I am writing to address the specific concerns/recommendations <br /> raised in your December 1, 1994 letter to Harold and Dena Knowles <br /> regarding the above referenced site. These responses follow in <br /> the order presented in your letter. <br /> 1. Wells MW-6, MW-7 and MW-8 will be developed as needed during <br /> the next well sampling event. All wells will be purged <br /> appropriately prior to sampling. Forty-eight hour notice of <br /> these and other site activities will be provided to your <br /> office. <br /> 2 . The vertical control survey data are attached. <br /> 3 . Ammended copies of tables from the November 21, 1994, Report <br /> of Additional Subsurface Investigation, are attached. <br /> 4 . An additional soil boring in the area east of SB22 , which may <br /> represent an area of former piping, will be advanced to 40 <br /> feet below grade. Samples at five foot intervals will be <br /> submitted for analysis of gasoline and diesel hydrocabons, <br /> including BTEX, by EPA methods 8015/8020. The location of <br /> this boring is shown on the revised Figure 3 (attached) . <br /> 5. An additional soil boring in the area west of MW-1 will be <br /> advanced to 40 feet below grade. This boring will be sampled <br /> as indicated in item 4 above. The boring location is shown on <br /> Figure 3 (attached) . <br /> 6 . The next phase of drilling will be contracted to Spectrum (the <br /> previous contractor) who will handle all permitting. <br /> Post Office Box 130 9 Milford, Ca. 96121 • Ph. 916-253-2155 0 Fax 916-253-2294 <br />