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rM <br /> ❑a GROUNDWATER APR 2 81986 <br /> ❑� TECHNOLOGY ENVIROMENTAL HEALTH <br /> Consulting Groundwater Geologists <br /> A Division of Oil Recovery Systems, Inc. PERMIT/SERVICES <br /> 5047 CLAYTON ROAD•CONCORD,CA 94521 +(415)671-2387 April 23, 1986 <br /> Laurie Cotulla <br /> San Joaquin Local Health- District <br /> P.O. Box 2009 <br /> Stockton, Ca. 95201 <br /> Re: Seven Eleven, 9110 Thorton Road, Stockton, California <br /> Dear Ms. Cotulla, <br /> This letter is to inform you of Groundwater Technology' s <br /> proposed procedures for the investigation of the suspect <br /> subsurface gasoline leak at the Seven Eleven Station located. at <br /> 9110 Thorton Road in Stockton, California. As discussed in our <br /> site meeting on April 18, 1986 , a leak of an estimated 5,000 <br /> gallons of unleaded gasoline is suspected to have occurred in the <br /> product line between the pump island and the tank pit. A site <br /> map showing as built specifications : of the underground tank and <br /> piping details is not available. Groundwater Technology intends <br /> to draft one with information obtained during the investigation. <br /> A drawing of the project site is provided for your reference (See <br /> Figure 1 ) . <br /> The purpose of this investigation is to determine if a leak <br /> ri <br /> has occurred at this site and if sotto define the extent and <br /> magnitude of the impact to subsurface soils and groundwater. The <br /> following procedures outline Groundwater Technology' s methodology <br /> in conducting the investigation. <br /> F� <br />