Laserfiche WebLink
1.0 INTRODUCTION <br />1.1 BACKGROUND <br />A 1,000 -gallon unleaded gasoline underground storage.tank'(UST), piping and dispenser island were <br />removed from the property at 2050 W. Fremont Street in .August 1992. The results of tank - removal <br />sampling were published by Kroeker Environmental Services 'in August 27, 1992. <br />Earth Tech was not present during the tank excavation, removal, -or subsequent sampling and <br />assessment. The owner of the property at the time reported that the UST appeared to be in good <br />condition. <br />Samples collected from the bottom of the tank excavation were analyzed by Twinings Laboratory. <br />These samples indicated residual. hydrocarbons in the soil, as summarized in Table 1. <br />TABLE 1 <br />Results of Soil Analysis Sampled Collected 8/20/92 <br />Soil Sample <br />Sample D�epth <br />BT.EX {�.cg/kg) <br />TVPH-Gasoline <br />MTBE (fig/kg) <br />(feet s) <br />(mg/kg) <br />S-1 (North Bottom) <br />I 1 <br />None Detected <br />None Detected.` <br />Not Analyzed <br />S-2 (South Bottom) <br />I I <br />Benzene - ND <br />600 <br />Not Analyzed <br />Toluene - 37 <br />Ethylbenzene - 46 <br />Xylenes - 85 <br />CS -1 (Stockpile) <br />None Detected <br />None DetectedI <br />Not Analyzed <br />.�vui%.c. n1 VU&rj , 1"Z. <br />1.2 OBJECTIVES <br />As requested by the San Joaquin Public - Health Services/Environmental Health Division <br />(PHS/EHD),the proposed subsurface investigation is intended to evaluate the extent of petroleum <br />impacted soil from the former UST; to evaluate the need for remedial action; and to provide data that <br />may be used for site closure. <br />a <br />