Laserfiche WebLink
FMS #24 Site Investigation Report <br />California Army National Guard <br />• <br />Table 3-1. (Continued) <br /><0.005 (ND) — <br />Sample <br />Sample Depth <br />Concentration <br />Criteria Comparison <br />Number <br />(feet bgs) Analyte <br />Reported in mg/kg <br />(mg/kg) <br />B32 <br />Benzene <br />0.12 <br />0.64 <br />(cont'd) <br />= di—isopropyl ether <br />PRG <br />Residential PRG <br />EPA <br />Toluene <br />0.37 <br />520 <br />ELBE <br />= ethyl tert—butyl ether <br />TBA <br />Residential PRG <br />FMS <br />Ethylbenzene <br />LI <br />400 <br />mg/kg <br />= milligrams per kilogram <br />TPHG <br />Residential PRG <br />MtBE <br />Xylenes <br />5 <br />270 <br />ND <br />= non—detect <br />Residential PRG <br />TAME <br /><0.005 (ND) <br />— <br />TBA <br /><0.02 (ND) <br />— <br />DIPE <br /><0.005 (ND) <br />— <br />EtBE <br /><0.005 (ND) <br />— <br />MtBE <br /><0.005 (ND) <br />— <br />Lead <br />8 <br />150 <br />Cal Mod Residential PRG <br />B32 <br />40 TPHG <br /><10 (ND) <br />— <br />TPHD <br /><10 (ND) <br />— <br />Benzene <br />0.24 <br />0.64 <br />Residential PRG <br />Toluene <br />0.048 <br />520 <br />Residential PRG <br />Ethylbenzene <br />1.1 <br />400 <br />Residential PRG <br />• <br />Xylenes <br />3.2 <br />270 <br />Residential PRG <br />TAME <br /><0.005 (ND) <br />— <br />TBA <br /><0.02 (ND) <br />— <br />DIPE <br /><0.005 (ND) <br />— <br />EtBE <br /><0.005 (ND) <br />— <br />Notes: <br />Bold indicates contaminant concentration exceeds 100 mg/kg (the recommended Tri—Regional Board guideline for TPHG or <br />TPHD in soil). <br />Lead concentrations were compared to the California Modified PRG of 150 mg/kg. <br />Benzene concentrations were compared to the California Modified PRG of 0.64 mg/kg. <br />Ethylbenzene and Toluene concentrations were compared to the PRG number for sat (soil saturation). <br />Xylene concentrations were compared to the PRG number for nc (noncancer). <br />Contaminant concentrations reported less than reporting limits are considered non -detect (ND). <br />Sources: Versar, Inc., 2004 <br />• <br />EPA, 2004 <br />Regional <br />Water Quality Control Board, 1990 <br />K:\Wprocess\00251\CA ARNG\Stockton FMS 24 ShSIDmit—dev.doc B-3 December 2007 <br />MtBE <br /><0.005 (ND) — <br />Lead <br />10 150 <br />Cal Mod Residential PRG <br />bgs <br />= below ground surface <br />NS <br />= not sampled <br />DIPE <br />= di—isopropyl ether <br />PRG <br />= preliminary remedial goal <br />EPA <br />= U.S. Environmental Protection Agency <br />TAME <br />= tert-amyl methyl ether <br />ELBE <br />= ethyl tert—butyl ether <br />TBA <br />= tert-butyl alcohol <br />FMS <br />= Field Maintenance Shop <br />TPHD <br />= total petroleum hydrocarbons as diesel <br />mg/kg <br />= milligrams per kilogram <br />TPHG <br />= total petroleum hydrocarbons as gasoline <br />MtBE <br />= methyl tert—butyl ether <br />UST <br />= underground storage tank <br />ND <br />= non—detect <br />Notes: <br />Bold indicates contaminant concentration exceeds 100 mg/kg (the recommended Tri—Regional Board guideline for TPHG or <br />TPHD in soil). <br />Lead concentrations were compared to the California Modified PRG of 150 mg/kg. <br />Benzene concentrations were compared to the California Modified PRG of 0.64 mg/kg. <br />Ethylbenzene and Toluene concentrations were compared to the PRG number for sat (soil saturation). <br />Xylene concentrations were compared to the PRG number for nc (noncancer). <br />Contaminant concentrations reported less than reporting limits are considered non -detect (ND). <br />Sources: Versar, Inc., 2004 <br />• <br />EPA, 2004 <br />Regional <br />Water Quality Control Board, 1990 <br />K:\Wprocess\00251\CA ARNG\Stockton FMS 24 ShSIDmit—dev.doc B-3 December 2007 <br />