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Measure & record 'Wand "Z," and then peform the following calculation: <br />„A"I /7=Drop tube seal surface to the bottom of the tank <br />- (subtract) <br />0 " Upper drop tube flange to the edge of the upper tube adapter <br />- (subtract) <br />4.S" Reference offset <br />_ (equals) <br />06 <br />vc� 4C0 DSG- k< -,,w <br />6 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 />a 6j gal Finale shutoff volume <br />closest corresponding volume. <br />(divide by) <br />016 gal Actual tank capacity <br />X (muliply by) <br />100 <br />(equals) <br />If the final shutoff volume <br />t a Final shutoff volume percentage <br />j <br />percentage is 95% or less, the <br />installation conforms to FFS and <br />Industry recommended practices. <br />I'd ( gal Actual tank capacity <br />(subtract) <br />17 0 6 �( gal Finai shutoff vaiume <br />_ (equals) <br />r u lase volume remawng <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 itallons, 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 />