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Table A-2 <br /> Analytical Test Methods and Sample Holding Times <br /> (Continued) <br /> Parameter Test Holding <br /> Matrixa Method Time Reference <br /> Sulfate 375.4 28 days 2 <br /> Sulfide 376.1 7 days 2 <br /> Total Dissolved 160.1 7 days 2 <br /> Solids <br /> Total Organic 415.1 28 days 2 <br /> Carbon <br /> 1 Methods for Organic Chemical Analysis of Municipal and Industrial Wastewater, <br /> EPA-600/4-82-057, July 1982 <br /> 2 Methods for Chemical Analysis of Water and Wastes, EPA-600/4/79/020, revised <br /> March 1983 <br /> a G= Ground Water, S= Surface Water(Spring), L= Lysimeter <br /> b Metals analyzed by ICP (EPA Method 200.7)with the exception of arsenic <br /> (EPA Method 206.2), lead (EPA Method 239.2), mercury (EPA Method 245.1), <br /> and selenium (EPA Method 270.2). <br /> c Holding time for all metals is 6 months with the exception of mercury <br /> (28 days). <br /> pj9\939\93901 11 c <br />