SITE INFORMATION AND CORRESPONDENCE 1988 - 2001

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Environmental Science & Engineering Inca ^ ' i �*_ 1CE EALTft A CILCORP C—Pany 1.131 DEC 20 PH 2: 13 December 17, 1993 Mr. Michael Infurna San Joaquin County Public Health Services P.O. Box 2009 Stockton, CA 95201 SUBJECT: 3535 E. CHEROKEE ROAD STOCKTON, CA COUNTY SITE CODE 1800 ESE PROJECT NO. 6-92-5400 Dear Mr. Infurna: The following letter regarding the.subject site is submitted on behalf of our client, Cecchini, Cecchini, and Giovannoni. On September 18, 1993, our client received a letter from the San Joaquin County Public Health Services (County) regarding the subject site. The letter requested a number of items as follows: • Quarterly monitoring reports for the subject site in accordance with Title 23 requirements, including ground water gradient determination; • A workplan, to be submitted within 90 days, for defining the existing limits of ground water contamination; and • Repair of well boxes for two of the wells at the site. The following discussion is in response to the County's September, 1993 letter. • Quarterly monitoring was performed for the fourth quarter of 1993 and is scheduled for four additional quarters in 1994. The latest report, for the fourth quarter of 1993, includes all required information listed in the County's letter. • Well boxes were repaired at the site in the fourth quarter of 1993 and documented in the fourth quarter 1993 monitoring report. A workplan for defining the existing limits of ground water contamination follows. Back rg ound ESE was retained in May of 1990 to investigate the fueling island area to include six underground gasoline and diesel fuel tanks and associated piping and dispensers. The first phase of the investigation, completed in June 1990, included drilling fourteen soil borings to a maximum depth of 50 feet to assess the extent of fuel in the shallow soil. The results 4090 Nelson Avenue,Suite J Concord,CA 94520 Phone(510)685-4053 Fax(510)685-5323