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4 NFormer Former Location of Fueling Island 0 50 Dispenser t j Pad Scale in Feet (concrete) Borehole Location:B-2 Depth Concentration (Ft bgs) Analyte (mg/kg) ® MW-3 Fortner 10 All Analytes <RL —I 20 All Analytes <RL Locations of —� 5,000-gal USTs-------- 30 AAnalytes <RL MW-2® 40 All Analytes <RL (AVGas, 50 All Analytes <RL JP-4,JP-8) Water All Analytes <RL I I I Former UST Location (two 20,000-gallon tanks) I I I I I I MW-1 ® I I I I I I I I----------------' Borehole Location:B-1 Depth Concentration Borehole Location:B-28 (Ft bgs) Analyte (mg/kg) Depth Concentration (Ft bgs) Analyte (mg/kg) 10 All Analytes <RL 15 All Analytes <RL 2 TPHD 130 25 All Analytes <RL TPHJ 130 30 All Analytes <RL 5 TPHD 420 35 All Analytes <RL TPHJ 420 40 All Analytes <RL 10 All Analytes <RL 45 All Analytes <RL All Analytes <RL 20 All Analytes <RL Water All Analytes <RL All Analytes <RL Water All Analytes <RL Note: Only results with detected concentrations greater than RL are shown.Soil samples were analyzed for TPHG, TPHD,TPHJ,TPHO, BTEX,TAME,TBA,DIPE, LEGEND: ETBE, MTBE and Lead. ® Groundwater Monitoring Well Analyte Acronyms: 0 Soil Boring Location BTEX benzene,toluene,ethylene,xylenes ETBE ethyl tertiary-butyl ether Ft bgs Feet Below Ground Surface DIPE di isopropyl ether MTBE methyl tertiary-butyl ether <RL Less than Reporting Limit TAME tert-amyl methyl ether TBA tert-butyl alcohol mg/kg milligram per kilogram TPHD total petroleum hydrocarbons as diesel TPHG total petroleum hydrocarbons as gasoline Bold=Value Exceeds Tri-Regional TPHJ total petroleum hydrocarbons as jet fuel Board Guidelines TPHO total petroleum hydrocarbons as oil NATL GUARD \ 010502_AASE-STOCKTON_SAMP_RESULTS.DGN VRL Figure 3-2. Borehole Sampling Results for Soil and Groundwater