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y <br /> SECTION 1 <br /> INTR®D UCTIOAT ,AND ,SCOPE OF WORK <br /> This document is the Addendum to the final Assessment Report of <br /> the Soil and Groundwater Investigation for the site located at 1033 <br /> East Scotts Avenue, Stockton, San Joaquin County, California (the <br /> Site). The Final Assessment Report, submitted to the Environmental <br /> Health Division (EHD) of the San Joaquin County Public Health <br /> Services and to the California Regional Fater Quality Control Board, <br /> Central Valley Region (CVRWQCB) in March 1991, details an <br /> August 1989 soil investigation and a January 1991 groundwater <br /> investigation at this former underground fuel storage tank site. This <br /> Addendum details the results of additional soil sampling performed <br /> at the Site on May 2, 1991. It is submitted by Atchison, Topeka & <br /> Santa Fe Railway Company (Santa Fe) to the Environmental Health <br /> Division(EHD) of the San Joaquin County Public Health Services and <br /> to the California Regional Water Quality Control Board, Central <br /> Valley Region (CVRWQCB), The contact person at EHD is Harlin <br /> Knoll at 209-468-3441. The contact person at the CRWQCB is Tom <br /> Peltier at 916-361-5731. The contact person at Santa Fe is Dave Clark <br /> at 213-889-7767. <br /> Scope of Wore <br /> r <br /> On May 2, 1991 soil sampling was performed in the vicitiity of the <br /> former tanks to supplement information gathered Juri,ig A:igust <br /> 1989 and Jaunuary 1991 drilling and soil sampling activities. This <br /> supplemental information was gathered to better estimate the full <br /> extent of the product-affected soil at the Site, and to determine if the <br /> product-affected soil is a hazardous waste. The scope of work <br /> included: <br /> + Installation of 3 borings to depths of 40 feet, 30 feet <br /> and 25 feet, to refine the estimate of the lateral and vertical <br /> extent of the product occurrence identified in August 1989; <br /> Collection and analysis of a total of 4 soil samples for Total <br /> Petroleum Hydrocarbons by EPA Method 8015 (mouified); <br /> • Analysis of one soil sample with the highest concentration of <br /> TPH for Benzene, Toluene,Xylenes, and Ethylbenzene (BTXE), <br /> and for bioassay using fathead minnows in order to determine <br /> if the soil is a hazardous waste; and <br /> 1-1 <br />