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�(9MR <br /> .ski <br /> A Division of McLaren/Hart <br /> Environmental Engtneenng <br /> 16755 Von Karmen Avenue <br /> Irvine CA 92714 <br /> (714) 756-2667 <br /> FAX (714) 756-8460 <br /> August 21, 1995 <br /> Elizabeth Thayer <br /> Associate Engineer <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> 0 3443 Routier Road, Suite A <br /> Sacramento, California 95827-3098 <br /> RE: ADDENDUM TO MSK ASSESSMENT IN REGARD TO CASE CLOSURE FOR THE SANTA FE <br /> RAILWAY SITE AT 1033 EAST SCOTTS AVENUE, STOCKTON, SAN JOAQUIN COUNTY, <br /> CALIFORNIA [CHEmRISK JOB NUMBER 03.0601994.001.001] <br /> Dear Ms. Thayer <br /> The purpose of this letter is to demonstrate completion of tasks requested by the California <br /> Regional Water Quality Control Board (CRWQCB) in order to obtain closure for the <br /> above-referenced Site Based on the results of these and past tasks, it is believed that there <br /> is sufficient data to allow closure of the Site without further action The rationale for <br /> granting closure is presented below. <br /> BACKGROUND <br /> In May of 1993, ChemRisk, a division of McLaren/Hart, submitted to San Joaquin County <br /> Department of Environmental Health (SJCDEH) a Baseline Risk Assessment for the Site <br /> which assessed (1) the potential for chemical migration through soil to groundwater and (2) <br /> the magnitude of any potential Site-related exposures and potential health risks associated <br /> Owith current Site conditions Using environmental fate and transport modeling, it was <br /> Qa��e�ru pews <br />