SITE INFORMATION AND CORRESPONDENCE_FILE 1

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A Advanced -t;�,�oaiMEtic�� 1EAl-ltl GeoEnvironM& hminu. 10 March 2003 AGE-NC Project No. 95-0103 /Mr. Harlin Knoll San Joaquin County Environmental Health Department 304 East Weber Avenue, Third Floor Stockton, CA 95202 Subject: Summary of March Meeting CHAPIN BROTHERS, INC. 1766 Monte Diablo Avenue, Stockton, California Dear Mr. Knoll: A meeting was held at the EHD office to discuss the continual need for ground water remediation at the above referenced site. The following parties participated in the meeting: • Mr. Harlin Knoll, San Joaquin Environmental Health Department • Mr. Nuel Henderson, San Joaquin Environmental Health Department • Mrs. Margaret Lagorio, San Joaquin Environmental Health Department • Mr. Russell ; hapin, , responsible party/property owner • Mr. Bill Little, Advanced GeoEnvironmental, Inc. (AGE) consultant for responsible party/property owner The following items were discussed during the 05 March 2003 meeting: 1. The ground water pump-and-treat system was in continuous operation at the site, operating for approximately three full quarters.Over this time period approximately 1.6 million gallons of impacted ground water has been treated. Cumulative totals of 4.3 lbs of Benzene and 95.9 lbs of TPH-g are estimated to have been extracted since ground water treatment began on 02 April 2002. 2. Contaminant concentrations have been reduced to approximately 1.3%benzene and 7.5% TPH-gasoline of the pre-remedation levels,at most impacted ground water monitoring wells. The remedation-goals were discussed, as present in the AGE letter dated 10 August 2001. 3. AGE recommended: continued quarterly ground water monitoring at the site as required by California Code of Regulations; and operation and maintenance of the ground water extraction and treatment system during the first quarter of 2003. 837 Shaw Road,Stockton,California 95215 Telephone(209)467-1006 FAX(209)467-1118