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3.4 The minimum and maximum nitrogen feed-rates, into the system, shall be <br /> one (1) and five (5) CFM, respectively. <br /> 4. Interferences <br /> 4.1 Introduction of nitrogen into the system at flowrates exceeding five (5) CFM <br /> may bias the results of the test toward non-compliance. <br /> 4.1 Power to the collection unit shall be turned off during testing. <br /> 5. Apparatus <br /> 5.1 Nitrogen. Use commercial grade nitrogen in a high pressure cylinder, <br /> equipped with a two-stage pressure regulator and a one psig pressure <br /> relief valve. <br /> 5.2 Pressure Measuring Device. Use 0-2.0, 0-1.0, and 0-0.50 inches H2O <br /> pressure gauges connected in parallel, a 0-2 inches H2O manometer, or an <br /> electronic pressure measuring device to monitor the pressure decay in the <br /> vapor recovery system. The pressure measuring device shall, at a <br /> minimum, be readable to the 0.05 inches H2O. <br /> 5.3 'T' Connector Assembly. See Figure 3-1 for example. <br /> \ Figure 3-1 <br /> "T" Connector Assembly <br /> 1 PRESSURE GAUGE y� <br /> QUICK CONNECT FITTING <br /> ,OR REGULATED NITROGEN <br /> SUPPLY <br /> I( III 1 To SWIVEL <br /> TO RISER I _— _ my �'I Y <br /> 3/4" % 1/2" % 3/4" 3/4" GALVANIZED <br /> CALVANI7ED OR BRASS "T" OR BRASS NIPPLE <br /> G-70-164 Exhibit 3-2 <br />