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