Laserfiche WebLink
( 6666 Owens Drive <br /> Pleasanton. California <br /> v94588 <br /> 510.460.5300 <br /> ATC <br /> Fax 510.463.2559 <br /> i <br /> A S S O C I A T E S I N C . <br /> _0 osa 1.1(1- 19 <br /> August 3, 1998 <br /> ` 62503.0003 <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, California 95202 <br /> Attention: Ms. Carol Oz <br /> SUBJECT: WORK PLAN FOR ADDITIONAL GROUNDWATER IWESTIGATION <br /> QUIK STOP MARKET NO. 132 <br /> .{ 3555 WEST HAMMER LANE <br /> STOCKTON, CALIFORNIA <br /> Dear Ms. Oz: <br /> fi On behalf of Quik Stop Markets, Inc., ATC Associates Inc. (ATC)has prepared this work plan to <br /> L present a scope and schedule to perform an additional groundwater investigation at Quik Stop <br /> Market No. 132 located at 3555 West Hammer Lane, in Stockton, California (site;Figure 1). <br /> BACKGROUND <br /> L In 1987, Exceltech installed a vadose monitoring system around the three existing gasoline <br /> L underground storage tanks (USTs). In July 1990, a leak was detected in the vicinity of the <br /> gasoline USTs. Subsequent excavation around the product lines indicated the presence of <br /> L hydrocarbon impacted soil. <br /> Between August 23, and September 13, 1990. Exceltech completed an initial site assessment <br /> consisting of the completion of five soil borings (B-1, B-2, B-3, B-4 and B-5) and the installation <br /> of four groundwater monitoring wells (MW-1; MW-2, MW-3 and MW-4). The soil and <br /> 1 groundwater samples were analyzed for total petroleum hydrocarbons as gasoline (TPHg) and <br /> 1 benzene, toluene, ethylbenzene and xylenes (BTEX) in accordance with EPA test methods 8015 <br /> and 8020, respectively. TPHg was present in at least one soil sample obtained from B-3 and B-5. <br /> BTEX (at least one constituent) were present in at least one soil sample obtained from B-1, B-2. <br /> B-3, B-5 and MW-1. The maximum TPHg concentration was 460 milligrams per kilograms <br /> (mg/kg) in the soil sample obtained from B-3 at a depth of 15 feet below ground surface fts). <br /> L <br /> ., 1 MLEASANTONW ni in TvkWaninez\QuikSionWOB PL.W(Gwinobe)dnc t <br />