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ln11 <br /> )`WA <br /> KM <br /> Vest® Inc. <br /> Suite 2611•1777 Batellto Drive•Walnut Creek.CaMorn a 94596-5042 'I4151 946.0455•Tefetar 1415)946.9968 <br /> July 15,1991 <br /> Ms. Mary Mcays <br /> Public Health Services/Environmental Health <br /> San Joaquin County <br /> 1601 East Hazelton Avenue <br /> Stockton,California 95201 <br /> Subject: Quarterly Ground Water Monitoring Report <br /> 1515 West Weber Avenue, Stockton,CA <br /> Site Code: 1281 <br /> Dear Mary: <br /> ERM-West, Inc. has completed additional work at ing 151of lwsot Weber Avenue. <br /> The work consisted of the construction an axis nlg monitoring wells. This <br /> monitoring wells and resampling <br /> letter contains a report of our findings. <br /> � �1Vell_C.4IL� <br /> were constructed on April 12, 1991 at the <br /> The two monitoring wells 1. The Wells,labeled MW-4 and MW-5' were <br /> locations depicted in FigureThe soil borings at <br /> located hydraulically downgradient of the tank site and within o the <br /> boundaries of the former tank location, respectively- <br /> at 5 foot intervals. A <br /> each location were drilled to 30 feet and same reserved for subsequent <br /> portion of the sample at each depth interval was Ied soils were used for <br /> laboratory analyses- The remainder of the same <br /> for preliminary field screening by head space <br /> to theUnitedSoil Classification System(see <br /> nd <br /> classification according <br /> enclosed boring log <br /> analysis. feet,they were completed <br /> After the borings were advanced to a informa�on is attached with each of <br /> as monitoring wells. Well comp well permit is also <br /> the boring logs. A copy of the San Joaquin County <br /> included. <br /> roxmately <br /> - -- ------The <br /> two constructed..of 2 inch diameter, flush-threaded,. <br /> Schedule 40 PVC. Well screen was set at a depth interval ° app <br /> TV. <br /> An alfUiare o1 The Environmental Resotirces Management Group win offices world-ce <br />