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f � <br /> J U L 1 6 1992 <br /> ENVIRONMENTAL hiMTH <br /> I <br /> GROUNDWATER PERMIT/SERVICES <br /> DE, TECHNOLOGY, INC. 4057 Port Chicago Highway Concord,CA 94520(415)6712387 <br /> FAX (415)685 9148 <br /> July 15, 1992 <br /> Project No 020502819 <br /> Mr Steve Schneider <br /> San Joaquin County Public Health Services <br /> P O Box 2009 <br /> 1601 East Hazelton Ave <br /> Stockton, CA 95201 <br /> RE Manna Pro Facility <br /> 4004 S EI Dorado <br /> Stockton, California <br /> Dear Mr Schneider <br /> Groundwater Technology, Inc, is pleased to submit this Quarterly Groundwater Monitoring and <br /> Sampling Report for the quarter ending May 31, 1992 Groundwater monitoring and sampling, and <br /> preparation of this report was performed pursuant to Section 2652(d) of the Underground Storage <br /> Tank Regulations (California Code of Regulations, Title 23, Subchapter 16), and as requested in the <br /> r <br /> May 20, 1991 letter from Public Health Services (PHS) to Mr Dean Willis of O'Melveney and Myers <br /> In accordance with the May 20, 1991 letter, this report presents <br /> 0 Status of Site Investigation and Cleanup Activities <br /> • Groundwater Monitoring Data <br /> • Groundwater Quality Data <br /> Status of Site Investigation and Cleaner Activities <br /> Since the discovery of the petroleum hydrocarbon contamination at the Manna Pro site, a site <br /> investigation has been performed to delineate the extent of the impact to sod and groundwater The <br /> impact apparently is the result of loss of product from five underground storage tanks and <br /> associated piping that were removed in June 1990 Soil from the removal of the tanks and further <br /> excavation of the pit to define the limits of the impacted soil has been stockpiled on the site pending <br /> evaluation of treatment options <br /> Currently the tank pit excavation remains open, and the excavated soil has been segregated into <br /> stockpiles of clean and impacted sod Although presently under evaluation, stockpiled sod will likely <br /> Offices throughout the U 5 Canada and Overseas <br />