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0 <br /> 7.6 If the vapor recovery system utilizes individual vapor return lines, repeat <br /> the leak test for each gasoline grade. Avoid leaving any vapor return line <br /> open longer than is necessary to install or remove the 'T" connector <br /> assembly. <br /> 7.7 If a containment box with a cover-actuated drain valve is installed, repeat <br /> the test with the cover in place. In these cases clearly specify, on Form 3-1, <br /> which results represent the pressure integrity with and without the cover in <br /> place. <br /> S. Post-Test Procedures <br /> 8.1 Use Table 3-1 or, or Equations 9.1, to determine the compliance status of <br /> the facility by comparing the final five-minute pressure with the minimum <br /> allowable final pressure. <br /> 9. Calculations <br /> 9.1 The minimum allowable five-minute final pressure, with an initial pressure <br /> of two (2.0) inches H2O, shall be calculated as follows: <br /> [Equation 9-11 <br /> -500.887 <br /> Pf =2e 1' ifN = 1-6 <br /> -571.614 <br /> Pf =2e ' ifN = 7-12 <br /> -562.455 <br /> Pf =2e V if N = 13-18 <br /> -593.412 <br /> Pf =2e ° if N = 19-24 <br /> -624.483 <br /> Pf =2e ifN > 24 <br /> Where: <br /> N = The number of affected nozzles. For manifolded systems, N <br /> equals the total number of nozzles. For dedicated plumbing <br /> configurations, N equals the number of nozzles serviced by the <br /> tank being tested. <br /> P, = The minimum allowable five-minute final pressure, inches H2O <br /> e = A dimensionless constant approximately equal to 2.718 <br /> 2 = The initial starting pressure, inches H2O <br /> G-70-164 Exhibit 3-8 <br />