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0Field Sampling Plan for the <br />Former UST Location at Stockton FMS #24 <br />California Army National Guard <br />Table 3-1. (Continued) <br />Sample <br />Sample Depth <br />NS = <br />Concentration <br />Criteria Comparison <br />Number <br />(feet bgs) <br />Analyte <br />Reported in mglkg <br />(mglkg) <br />B32 <br />tert—amyl methyl ether <br />MtBE <br /><0.005 (ND) <br />— <br />(cont'd) <br />mg/kg <br />Lead <br />8.9 <br />150 <br />MtBE <br />= methyl tert—butyl ether <br />TPHG = <br />total petroleum hydrocarbons as gasoline <br />Cal Mod Residential PRG <br />B32 <br />35 <br />TPHG <br /><10 (ND) <br />100 <br />Tri—Regional Board Guideline <br />TPHD <br />63 <br />100 <br />Tri—Regional Board Guideline <br />Benzene <br />0.12 <br />0.64 <br />Residential PRG <br />Toluene <br />0.37 <br />520 <br />Residential PRG <br />Ethylbenzene <br />1.1 <br />400 <br />Residential PRG <br />Xylenes <br />5 <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 />MtBE <br /><0.005 (ND) <br />— <br />Lead <br />8 <br />150 <br />Cal Mod Residential PRG <br />B32 <br />40 <br />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 />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 />MtBE <br /><0.005 (ND) <br />— <br />Lead <br />10 <br />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 />United States Environmental Protection Agency <br />TAME = <br />tert—amyl methyl ether <br />EtBE <br />= ethyl tert—butyl ether <br />TBA = <br />tert—butyl alcohol <br />mg/kg <br />= milligrams per kilogram <br />TPHD = <br />total petroleum hydrocarbons as diesel <br />MtBE <br />= methyl tert—butyl ether <br />TPHG = <br />total petroleum hydrocarbons as gasoline <br />ND <br />= non—detect <br />K:\Wprocess\00251\CA ARNG\Stockton FSP\FINAUStockton FSP.doc 9 August zuuU <br />