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FROM : GETTLER-RYAN INC. PHONE NO. : 916 631 1317 Apr. 06 2000 09:46AM P2 6ETTLER-RYAN INC. April 4, 2000 Mr. Harlan Knoll San Joaquin County Public Health Services Environmental Health Division P.O. Box 2009 Stockton, CA. 95201 Subject: Proposed Revised Remedial Activity Implementation Schedule at Former Chevron Station #9-5775,301 West Kettleman Lane, Lodi, CA. Mr. Knoll: In a letter dated March 31, 2000, to the San Joaquin County Public Health Services-rnvironrslcntal Health Division, Gettler-Ryan Inc. (GR) proposed a schedule for implementation of remedial actions at the subject site. The Ietter was written in response to your letter of March 29, 2000, to Chevron directing that an interim remedial pump and treat system be installed and operating continuously by April 24, 2000. This letter discusses the interim remedial measures that GR has already implemented, and the reasons we feel it will not be possible to meet the April 24, 2000, deadline_ • The subject site: has been leased by Prime Shine, who plans to redevelop the property as an oil change/lubrication facility and car wash. Prime Shine's most recent estimate for the start of construction is June 2000. Chevron has already leased space at the site for a remediation system compound, and has agreed to coordinate installation of remedial equipment with Prime Shine's contractor. Pumping from extraction well EX -1 was initiated on March 24, 2000. Approximately 300 gallons were pumped in 6.5 hours. On March 30, 2000, GR attempted to re -develop the well to improve the pumping rate. The well was surged with a vented surge block and hand bailed, then pumped for approximately 3 hours. Approximately 100 gallons of water were removed. GR is scheduled to return to the site on a weekly basis to pump from well EX -1 until a permanent pump and treat system can be installed. Samples were collected from well EX -1 following each pumping event, but analytical data have not been received. Results will be forwarded upon receipt. GR has contacted the City of Lodi regarding.discharge of treated system effluent to their industrial waste lime. This line is installed in Kettleman Lane (State Highway 12). A CalTrans permit is required to dig the necessary trench to connect to the industrial waste line. Since the City of Lodi is already scheduled to bring a water line onto the property from a water main located in Kettleman Lane, they have indicated they want to dig the trenches for both the water line and system effluent 6747 Sierra Court, Suite J • Dublin, California 94568 • ( 9 2 5 ) 551-7555