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Working to Restore Nature <br /> 1710 Mainz Street <br /> Escalon, CA 95320 <br /> Phone: (209)538-3507 <br /> FAX; (209)838-3509 <br /> 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 /> Dear Ms, Lagorio: <br /> As we discussed via telephone on Thursday December 31, 1992 RESNA Industries, Inc, <br /> (RESNA) 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) 'T'lte boring will be drilled by a licensed C-57 contractor; <br /> 5) The drill cuttings will be stared on site and covered with visqueen until laboratory <br /> analysis is complete and an appropriate disposal method can be developed; <br /> 6) 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 /> i-ozaas3, vi Post-Its'brand fax transmittal merno 7671 rf 01 pages 0, <br /> D¢pi, Phano# <br /> Fex# Fax# C�, <br />