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Measure & record "A" and "Z," and then peform the following calculation: <br />"A"I/S/ / " Drop tube seal surface to the bottom of the tank <br />- (subtract) <br />III-?/ , ) - -7 . r Upper drop tube flange to the edge of the upper tube adapter <br />- (subtract) <br />4.5" Reference offset <br />_ (equals) <br />gal I Actual tank capacity <br />- (subtract) <br />q. - -70 gal Final shutoff volume <br />= (equals) <br />T3gal Wage volume remaining <br />91 <br />The final Shutoff Volume Percentage may <br />be greater than 95% as long as the ullage <br />volume remaining is greater than or <br />equal to 250 gallons, so that "...none of <br />the fittings located on the top of the tank <br />are exposed to product due to <br />overfilling," according to EPA 40 CFR Part <br />280. The installation must also meet all <br />applicable regulatory requirements, and <br />must be acceptable to the Authority <br />Having Jurisdiction (AHJ). <br />Final shutoff volume height <br />Locate the final shutoff volume <br />height on the tank chart <br />Use the tank chart provided by the tank <br />provided by the tank <br />manufacturer to record and calculate the following: <br />manufacturer, and record the <br />cf <br />Final shutoff volume <br />closest corresponding volume. <br />jar .747F gal <br />T (divide by) <br />0 LZ gal Actual tank capacity <br />X (muliply by) <br />100 <br />_ (equals) <br />If the final shutoff volume <br />percentage is 95%or less, the <br />, . %I <br />Final shutoff volume percentage <br />installation conforms to FFS and <br />industry recommended practices. <br />gal I Actual tank capacity <br />- (subtract) <br />q. - -70 gal Final shutoff volume <br />= (equals) <br />T3gal Wage volume remaining <br />91 <br />The final Shutoff Volume Percentage may <br />be greater than 95% as long as the ullage <br />volume remaining is greater than or <br />equal to 250 gallons, so that "...none of <br />the fittings located on the top of the tank <br />are exposed to product due to <br />overfilling," according to EPA 40 CFR Part <br />280. The installation must also meet all <br />applicable regulatory requirements, and <br />must be acceptable to the Authority <br />Having Jurisdiction (AHJ). <br />