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A RESNA Company --- ---- $` ;.�.a <br /> Environmental Solutions <br /> MAY 15 1992 Through Applied Science, <br /> 3164 Gold Camp Drive, Suite 200 Engineering&Construction <br /> Rancho Cordova, CA 95670 ENVIRONMENTAL HEALTi; <br /> Phone (916) 852-6690 PERMIT/SERVICES <br /> FAX (916) 852-6688 <br /> May 14, 1992 <br /> Ms. Margaret Lagorio <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 445 North San Joaquin <br /> Stockton, California 95202 <br /> Subject: Response to Comments Regarding Addendum to Work Plan for a Subsurface <br /> Investigation at ARCO Service Station No. 6100, 25775 South Patterson Pass <br /> Road, Tracy, California. <br /> Ms. Lagorio: <br /> At the request of ARCO Products Company (ARCO), RESNA Industries (RESNA) is <br /> responding to your letter of April 24, 1992, regarding our Addendum Work Plan No. 30041- <br /> 2, dated March 20, 1992, for a subsurface investigation at the subject site. <br /> 1. ARCO is currently searching their records for the log of the onsite water supply well. <br /> This log should indicate the depth to water at the site. <br /> 2. The laboratory analyzing the soil samples has been notified to analyze the samples <br /> within the acceptable holding time. <br /> 3. The two borings to be drilled in the paved shoulder of Patterson Pass Road are <br /> within the San Joaquin County Right-of-Way, and we have obtained the necessary <br /> permit to drill within their Right-of-Way. As requested, we have attached another <br /> application for a permit to drill these two borings. <br /> The additional work will be performed in accordance with the Tri-Regional Board Staff <br /> Recommendations for Preliminary Evaluation and Investigation of Underground Tank Sites <br /> (California Regional Water Quality Control Board,Central Valley Region, 1989);Appendix <br /> A to that document (August 1990); and the Leaking Underground Fuel Tank Manual <br /> (California Leaking Underground Fuel Tank Task Force, 1989). The Site Mitigation <br /> Acknowledgement/ Request For Services Form is included in attachments to this work plan. <br /> 0512mlag <br /> 30041-3 <br />