ARCHIVED REPORTS XR0000130 - Laserfiche WebLink

Home Browse Search

i directed by CRC and observed by HS/ HD to assess thep ossible lateral extent of an oily substance detected at approximately 26 feet bgs in boring SB-3 Although only toluene, xylene and ethylbehzenes were detected in amounts ranging from 12 to 150 ug/Kg, no VOCs were detected In Samples S133-26, only the SVOCs naphthalene and 2-methylnaphthalene were detected at 25 to 44 mg/Kg, respectively The laboratory also detected an "unknown hydrocarbon" with a concentration of 1,500 mg/Kg An evaluation of analytical/chromatographic data from Sample SB3-26 by ENSECO personnel indicated that the detected compound was not a weathered gasoline product They further stated the compound appears to occur in the range of a kerosene I type of hydrocarbon product The following Table 1 B summarizes the laboratory analytical results for the soil samples collected during the Additional Investigation of the Septic Leach Area IENSECO laboratory results for these analyses are provided in Appendix A TABLE 1.B Summary of Analytical Laboratory Results _ Detected Concentrations (ug/Kg) 7 z June, 1994 Unknown G- L- SAMPLE Depth TPH-G hydrocarbon* Benzene Toluene Xylene E-benzene 1,2-DCA SB3-26 26 ndt000 0 1500 �Z n 5 0 355 0 510,0 1303 0 nd,0 ✓ ' S133-31 31 nd nd nd 12 nd nd nd S134-26 26 nd nd nd 13 nd nd nd I SAMPLE Depth 2-methy1napthalene" napthalene** ISB3-26 26 44 25 SB3-31 31 nd nd SB4-26 26 nd nd nd = Non detected at the level of detection noted to subscript na = Not analyzed * _ "Unknown hydrocarbon" concentration rn mg/Kg with level of detection equal to 25 mg/Kg ** = SVOC concentrations to mg/Kg with level of detection equal to 1 6 mg/Kg &P-4COR' N0026 001 01 ROF 4 August 1 1994