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Table 1 <br /> Analytical Method, Container, Preservation, and Holding Time Requirements <br /> Assessment of the Extent of Affected Groundwater Adjacent to a Pipeline Block Valve near Stockton _. <br /> Junction at the Intersection of Inland Drive and Jacobs Road,San Joaquin County,California <br /> EPA Field Hold <br /> Suite Analyses Method Filter Container Preservation Time <br /> TPH TPH-Diesel DHS 5B/ No 3 x VOA None 14 Days <br /> TPH-Gas 8260B <br /> BTEX BTEX 8260B <br /> TAME 8260B <br /> RIPE 8260B No 4 x VOA HCl 14 Days <br /> TBA 8260B <br /> Oxygenates ETBE 8260B <br /> MTBE 8260B <br /> Methanol 8260B No 3 x VOA HCl 14 Days <br /> Ethanol 8260B <br /> Lead Total Lead 200.8 No 250 mL Poly HNO3 6 Months <br /> Dissolved 200.8 Yes 250 mL Poly HNO3 6 Months <br /> Lead <br />