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<br />4 <br /> <br />PROCEDURES <br /> <br />The following procedures were used during the test program: <br /> <br />Determination of Volumetric Flow Rate <br /> <br />Velocity pressures were determined at numerous points across <br />the duct using a standard pitot tube connected to an inclined manometer. <br />Gas temperature was measured with a mercury-in-glass thermometer. Standard <br />o <br />EPA equations were used to calculate the actual and dry standard (68 F, <br />29.92 in. Hg) flow rates. <br /> <br />Determination of Gas Moisture Content <br /> <br />The moisture content of the effluent was determined from the <br /> <br />wet and dry bulb temperatures using standard psychrometric techniques. <br /> <br />Determination of Odor Concentration <br /> <br />Odor concentrations were determined according to American Society <br />for Testing Materials (ASTM) Method D-1397-57, which is entitled "Standard <br />Method for Measurement of Odor in Atmospheres (Dilution Method)." The <br />panel testing procedure was conducted according to the method described <br />by D. M. Benforado, W. J. Rotella, and D. L. Horton, "Development of an <br />Odor Panel for Evaluation of Odor Control Equipment," J. APCA 19 (2):101-105. <br /> <br />Gas samples were collected in clean, odor-free teflon bags using <br />the following apparatus: <br /> <br />Collection Apparatus <br /> <br />Bag <br /> <br /> <br />-' <br /> <br />Sample Line <br />Source <br /> <br /> <br />Air-tight <br />Container <br /> <br />Squeezebulb <br />Hand Pump <br /> <br />Sample bag is filled by evacuating the sealed container. <br />Sample bag is emptied by pressurizing the sealed container. <br /> <br />6 <br />