Laserfiche WebLink
In soil, a total of 7 of the 12 samples collected during the drilling contained detectable <br /> concentrations of gasoline hydrocarbons. Vertically, the extent of impacted soil was not fully <br /> defined . The lateral extent of impacted soil above 25 feet appeared to be mostly limited to the <br /> vicinity of the former UST system . The lateral extent of impacted soil below 25 feet appeared to <br /> be more extensive and undefined , probably due to lateral migration in groundwater. The soil <br /> sample analytical results are summarized in Table 1 . <br /> In groundwater, the samples collected from MW- 1 , MW-2 and MW-3 contained detectable <br /> concentrations of gasoline hydrocarbons , including TPH-as-gasoline and benzene , toluene, <br /> ethylbenzene , xylenes (BTEX) . The groundwater sample collected from MW-4 did not contain <br /> gasoline compounds. MTBE , TPH-as-diesel and TPH-as-motor oil were not detected in any of <br /> the four groundwater samples. Since the groundwater flow direction was calculated to be toward <br /> the east-southeast, the downgradient extent of impacted groundwater was not defined . The <br /> groundwater analytical results are summarized in Table 2 , and the well construction details and <br /> groundwater monitoring data are included in Table 3 . <br /> For the area within 2 , 000 feet of the site, seven water well completion reports were on file at the <br /> California Department of Water Resources (DWR) . None of these wells were found , during <br /> reconnaissance. The entire site vicinity appeared to be connected to California Water Service , <br /> and none of its water supply wells existed within the site vicinity. The site vicinity was almost <br /> entirely commercial property, and city and county government buildings. The nearest school to <br /> the site appeared to be the Trinity Lutheran School at 444 American Street, approximately 1 , 800 <br /> feet northeast of the site. No other schools, hospitals, or other potential sensitive receptors were <br /> observed in the site vicinity. The nearest surface water body to the site was McLeod Lake at <br /> Weber Point; approximately 1 , 000 feet west of the site. <br /> 6 <br />