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Table 1
<br /> Proposed Additional Soil and Groundwater Sampling
<br /> Assessment Activities
<br /> 401 North San Jose Street
<br /> Stockton,California
<br /> Soil Sample Depths Grab Groundwater Sample
<br /> Well ID (feet bgs) Depths(feet bgs) Sample Analysis Rationale for Sampling
<br /> TPH-GRO,TPH-DRO, Assess potential petroleum hydrocarbon impacts
<br /> TPH-MO,BTEX,Fuel to soil and groundwater underlying the site
<br /> MW-5 5/10/15/20 NA Oxygenates,
<br /> Naphthalene,and
<br /> CAM 17 Metals
<br /> TPH-GRO,TPH-DRO, Assess potential petroleum hydrocarbon impacts
<br /> TPH-MO,BTEX,Fuel to soil and groundwater underlying the site
<br /> MW-6 5/10/15/20 NA Oxygenates,
<br /> Naphthalene,and
<br /> CAM17 Metals
<br /> TPH-GRO,TPH-DRO, Assess potential petroleum hydrocarbon impacts
<br /> TPH-MO,BTEX,Fuel to soil and groundwater underlying the site
<br /> MW-7 5/10/15/20/25 NA Oxygenates,
<br /> Naphthalene,and
<br /> CAM 17 Metals
<br /> TPH-GRO,TPH-DRO, Assess potential petroleum hydrocarbon impacts
<br /> TPH-MO,BTEX,Fuel to groundwater underlying the site
<br /> SB-1 NA 35 Oxygenates,
<br /> Naphthalene,and
<br /> CAM17 Metals
<br /> TPH-GRO,TPH-DRO, Assess potential petroleum hydrocarbon impacts
<br /> TPH-MO,BTEX,Fuel to groundwater underlying the site
<br /> SB-2 NA 35 Oxygenates,
<br /> Naphthalene,and
<br /> CAM 17 Metals
<br /> TPH-GRO,TPH-DRO, Assess potential petroleum hydrocarbon impacts
<br /> TPH-MO,BTEX,Fuel to groundwater underlying the site
<br /> SB-3A/36 NA 20/35 Oxygenates,
<br /> Naphthalene,and
<br /> CAM 17 Metals
<br /> Notes:
<br /> bgs=below ground surface
<br /> NA=not applicable
<br /> Analytical Methods:
<br /> Total Petroleum Hydrocarbons as gasoline range organics(TPH-GRO)by USEPA Method 8015M
<br /> Total Petroleum Hydrocarbons as diesel range organics(TPH-DRO)by USEPA Method 8015M
<br /> Total Petroleum Hydrocarbons as motor oil(TPH-MO)by USEPA Method 8015M
<br /> Benzene,Toluene,Ethylbenzene,and total Xylenes(BTEX)by USEPA Method 8260B
<br /> Fuel Oxygenates:methyltertiary butyl ether(MTBE),1,2-dichloroethane(1,2-DCA),ethanol,diisopropyl ether(DIPE),
<br /> ethyl tertiary butyl ether(ETBE),tertiary amyl methyl ether(TAME),tertiary butyl alcohol(TBA)and 1,2-dibromoethane
<br /> (EDB)by USEPA Method 8260B
<br /> Naphthalene by USEPA Method 8270C
<br /> 17 California Code Regulations,formerly California Administrative Manual,Metals(CAM17)by USEPA Method 6010B
<br /> Approximately 20%of the proposed soil samples will be analyzed for the full range of volatile organic compounds(VOCs)
<br /> by USEPA Method 8260B and the full range of semivolatile organic compounds(SVOCs)by USEPA Method 8270C.
<br /> Depths of samples may be adjusted in the field based upon field observations.
<br /> Proposed Sample Locations.xls ARCADIS Page 1 of 1
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