Laserfiche WebLink
@r'y,.' F�_ffl <br /> ME <br /> _ <br /> i <br /> Y <br /> DISCUSSION <br /> The water supply well survey indicates that nine documented water supply wells are <br /> K known to be located with in a 1/2-mile radius of the site. None of.these wells are <br /> currently in the downgradient direction from the UNOCAL facility. Analyses of <br /> groundwater from WeII WSW-1 suggests that WSW 1 has not been impacted by `. <br /> hydrocarbons. <br /> The highest hydrocarbon concentrations in the soils (1,800 ppm TPH gasoline,710 ppm <br /> TPH diesel) are at the 5-foot depth sample from Boring U-1 which is Iocated adjacent <br /> 5 to the above-ground storage tanks. Hydrocarbon concentrations in the vicinity of U-2 <br /> were also found to be highest at the 5 foot depth(1,200 ppm TPH gasoline,5 ppm TPH <br /> diesel). These concentrations in each boring attenuated to low or non-detectable levels <br /> in the 10-foot sample,which is below groundwater. <br /> The highest hydrocarbon concentrations in the groundwater were found in the sample - <br /> collected from Well U-2 (670 ppb TPH gasoline) located within 10 feet of the former <br /> transmission fluid tank. The groundwater sxrnple collected from Well U-1, which is i. <br /> ned 140 b TPH gasoline. <br /> located adjacent to the above-ground tank complex, contai pp <br /> The'lack of;s�ydrocarbons"ixa the gioundtvater sampYe collected from Well U-3 defines <br /> the�d6 it of dissolved hydrocarbons east of the'transmission fluid tank and associated <br /> pipMg _ <br /> f � , <br /> i <br /> 3100101/REPORT 7 Februar;13,1991 <br />