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Harding Lawson Associates <br /> MAR 3 ;W _ = <br /> ENVIROMENTAL HEALTH <br /> March 3, 1987 FERMIT/SERVICES <br /> 180409001.03 <br /> San Joaquin Local Health district <br /> 601 E. Hazelton <br /> P.O. Box 2009 <br /> Stockton, California <br /> R <br /> Attention: Ms. Laurie Cotulla <br /> Gentlemen: <br /> Application for Well Permits <br /> 7-Eleven Facility <br /> 455 West Grant Line Road <br /> Tracy, California <br /> On behalf of 7-Eleven Stores, Harding Lawson Associates {HLA} <br /> requests the required permit to install an additional monitoring <br /> well at 455 West Grant Line Road in Tracy, California. This <br /> 7-Eleven facility has three underground gasoline tanks, one of <br /> which has been identified to have a leak and has been emptied. <br /> Relative to this leak, 7-Eleven has issued an Underground Storage <br /> Tank Unauthorized Release Report, dated November 5, 1986. On <br /> November 24, 1986, HLA installed four monitoring wells at the <br /> 7-Eleven facility. The additional well will be located immediately <br /> down gradient of the tank that leaked. We will also obtain an <br /> additional soil sample for chemical testing halfway between MW-1 <br /> and MW-5 at a depth of 5 feet. <br /> We anticipate that drilling operations will begin on March 6, 1987. <br /> HLA intends to install the monitoring well at the approximate <br /> location shown on the attached Site Plan. The well will be drilled <br /> using an 8-inch-diameter continuous flight hollow-stem auger and <br /> will consist of 2-inch-diameter PVC casing with flush-mounted <br /> joints. The well will be screened from the bottom to approximately <br /> 5 feet below the ground surface, but no less than 1 foot above the <br /> ground-water level. The specific construction details for the <br /> well will be based on the results of the drilling and sampling <br /> program. The following well construction standards, in general, <br /> will be used: <br /> Engineers 2430 Stanwell ar. Telephone Alaska Colorado Texas <br /> Geologists& Suite 110 415/687-9660 Arizona Hawaii <br /> Geophysicists Concord,CA 94520 California Nevada <br />