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Site Characterization Work Plan ABF Freight System,Inc Manteca, California Pap-e_3 . Table 1 Soil Sample Analytical Results Sample Date TPH-D Benzene Toluene Ethylbenzene Xylenes Identification Sampled (mg/kg) (mg/kg) (mg/kg) (mg/kg) (mg/kg) TI-NW-10'4" 3120198 <0 5 <0 005 <0 005 <0 005 <0010 TI-SE-10'4"#2 3/20/98 < 0 5 <0 005 <0 005 <0 005 <0010 Dl-4' 3/20198 <0 5 <0 005 <0 005 <0 005 <0010 SP1-S 3120198 220 <0 005 <0 005 1 <0 005---j <0010 SPI-N 3/20/98 35 <0 005 <0 005 <0 005 <0010 mg/kg=milligrams per kilogram TPH-D=Total Petroleum Hydrocarbons as Diesel Table 2 Groundwater Sample Analytical Results Sample Date TPH-D Benzene Toluene Ethylbenzene Xylenes Identification Sampled (mg/L) (pg/L) (pg/L) (µg/L) (n/L) Excavation 11' 3/18/98 53 <2 5 <2 5 <2 5 <5 0 Pit Water 3120198 41 <0 005 2 2 27 mg/L=milligrams per Liter lig/L=micrograms per Liter TPH-D=Total Petroleum Hydrocarbons as Diesel • A 6,000 gallon UST containing gasoline was removed from the site in 1986 According to phone interviews with Mr Robert McClellon of the PHS/EHD no soil or groundwater contamination was found during the 6,000 gallon UST removal 3.0 REGULATORY REQUIREMENTS AND PERMITS This section identifies federal, state, and local regulations, including the issuance of permits that govern the installation of monitoring wells and site characterization in the State of California Regulations governing health and safety related activities can be found in the Health and Safety Plan in Appendix 2 3.1 Federal Regulations 3 1 1 UST Closure Tank and pipeline closure will be conducted in accordance with the requirements of 40 CFR Part 280, Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks • N 1PROJECTS132721P1ans and ReportslABF Final Site Characterization Work Plan doc 6123198