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I <br /> Ground Water Sampling <br /> Parameter Container Preservation Holding Time No of Samples <br /> & Minimum <br /> Volume (ml) <br /> Purgeable G-V Cool,4" C 14 days 2 x 4 0 <br /> Organics H2SO4,HCl or NaHSO, <br /> (EPA 8260) topH <2 <br /> Purgeable G-V Cool,4" C 14 days 2 x 4 0 <br /> Aromatics H2SO4,Hcl or NaHSO, <br /> topH<2 <br /> Acrolein & G-V Cool,4" C 14 days 2 x 4 0 <br /> Acrylondnle Adjust pH to 4-5 <br /> Gasoline G-V Cool,4" C 14 days 2 x 40 <br /> H2SO4, Hcl or NaHSO, <br /> topH<2 <br /> Pesticides& PCBs G Cool,4" C 7 days to extraction, 1000 <br /> analysis 40 days after <br /> extraction <br /> Phenols G Cool,4" C 7 days to extraction, 1000 <br /> analysis 40 days after <br /> I0 . extraction <br /> Oil &Grease G Cool, 4•C 28 days 1000 <br /> H2SO4 to pH < 2 <br /> a P= Polyethylene container with polypropylene closure <br /> G =Glass container with Teflon-lined closure <br /> G-V=Glass VOA vial or bottle with Teflon septum <br /> 20 <br />