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_ Working to Restore Nature <br /> RE C"N <br /> 1710 Main Street. , • L' <br /> t i4 J 1say <br /> Escalon CA 95320 -... JAN 0 <br /> Phone: (209)838-3507 <br /> FAX: (209)838-3509 �NVIRONWIFNTAL NEALTH <br /> PERMRlr3L VIM January 4, 1993 <br /> Margaret Lagorio <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton, CA 95201 <br /> RE: Healy Property,� 9172 Thornton Road Stockton, California (Figure 1 <br /> ) <br /> Dear Ms. Lagorio: <br /> As we discussed via telephone on Thursday December 31, 1992 RESNA Industries, Inc. <br /> (RFSNA) is writing to present an addendum to the letter workplan to address possible petroleum <br /> hydrocarbon contamination in the former underground storage tank area at the above referenced <br /> site. <br /> In response to your concerns: <br /> 1) Figure 1 depicts the former gasoline tank locations and pump island with the <br /> - proposed boring location; <br /> 2) The boring will be drilled to 35 feet total depth using 6 inch hollow stem auger; <br /> 3) The boring will be abandoned with neat cement using the tremmie method; <br /> 4) The boring will be drilled by a licensed C-57 contractor; <br /> 5) The drill cuttings will be stored on site and covered with visqueen until laboratory <br /> analysis is complete and an appropriate disposal method can be developed; <br /> b) The location of the boring will confirm the existence or previous removal of the <br /> product lines (Figure 1). The findings will be discussed in the summary report. <br /> L-010493.FNI. <br />