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ua-o( gF,-- Pau L <br />izI�-0/t <br />Measure & record "A" and "Z," and then peform the following calculation: <br />"A"1 133 " Drop tube seal surface to the bottom of the tank <br />- (subtract) <br />Upper drop tube flange to the edge of the upper tube adapter <br />- (subtract) <br />4.5" Reference offset <br />_ (equals) <br />c 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 provided by the tank <br />manufacturer to record and calculate the following: manufacturer, and record the <br />S3 gal Final shutoff volume <br />(divide by) <br />gal Actual tank capacity <br />X (muliply by) <br />100 1 <br />closest corresponding volume. <br />> > = (equals) If the final shutoff volume <br />o0 U Ig 313 %] Final shutoff volume percentage percentage is 95% or less, the <br />installation conforms to FFS and <br />industry recommended practices. <br />gal Actual tank capacity <br />The final Shutoff Volume Percentage may <br />- (subtract) be greater than 95% as long as the ullage <br />0. �'5- gal Final shutoff volume volume remaining is greater than or <br />= (equals) <br />gad Ullage volume remaining <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 />17� <br />