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Table D-2 <br />Analytical Test Methods and Sample Holding Times <br />Parameter Matrix' Test Method Holding Time <br />Reference <br />Volatile Organic Compounds (VOC) 8260 14 days <br />1 <br />Organochlorine Pesticides and PCBs <br />Chlorophenoxyl Herbicides <br />Semivolatile Organic Compounds 625/8270 7 days extraction, <br />1 <br />40 days analysis <br />Metals 200 Series' 6 monthsb <br />2 <br />Alkalinity (total, carbonate, and bicarbonate) 310.1 14 days <br />2 <br />Chemical Oxygen Demand (COD) 410.2 28 days <br />2 <br />Chlorides 9252 28 days <br />2 <br />Cyanides 335.2 14 days <br />2 <br />Electrical Conductivity Field Measurement <br />Nitrate Nitrogen 9700 14 days <br />2 <br />Oil and Grease 418.1 28 days <br />2 <br />pH Field Measurement <br />Sulfates 375.4 28 days <br />2 <br />Sulfides 376.1 7 days <br />2 <br />Total Suspended Solids 377.1 Analyze Immediately <br />2 <br />Total Dissolved Solids 160.1 7 days <br />2 <br />Total Organic Carbon (TOC) 415.1 28 days <br />2 <br />Temperature Field Measurement <br />Turbidity Field Measurement <br />Dissolved Oxygen Field Measurement <br />1 Methods for Organic Chemical Analysis of Municipal and Industrial Wastewater, EPA-600/4-82-057, July 1982 <br />2 Methods for Chemical Analysis of Water and Wastes, EPA-600/4/79/020, revised March 1983 <br />3 Standard Methods for the Examination of Water and Wastewater, APRA/AW WA/WPCF, 16th edition <br />' Metals analyzed by ICP (EPA Method 200.7) with the exception of arsenic (EPA Method 206.2), lead (EPA Method 239.2), mercury <br />(EPA Method 245.1), and selenium (EPA Method 270.2). <br />b Holding time for all metals is 6 months with the exception of mercury (28 days). <br />SAt\N -\PJ0\093M390031.9BG-94 sdg:4 D-,I I Rev. 0, 420/95 <br />