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�resc�c. <br /> Measure&record"A'and"Z,"and then peform the following calculation: <br /> "A" Drop tube seal surface to the bottom of the tank <br /> rr- (subtract) <br /> ITI " Upper drop tube flange to the edge of the upper tube adapter <br /> -(subtract) <br /> 4.5„ Reference offset <br /> _(equals) <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 provided by the tank <br /> manufacturer to record and calculate the following: manufacturer,and record the <br /> closest corresponding volume. <br /> gal Final shutoff volume <br /> (divide by) <br /> gall Actual tank capacity <br /> X(muliply by) <br /> 100 <br /> (equals) if the final shutoff volume <br /> O _ O percentage is 9S%or less,the <br /> u i u % Final shutoff volume percentage installation conforms to FFS and <br /> industry recommended practices. <br /> ga I Actual tank capacity <br /> (subtract) The final shutoff volume Percentage may <br /> fir^ be greater than 95%as long as the ullage <br /> 6 7 gal Final shutoff volume volume remaining is greater than or <br /> _(equals) equal to 250 gallons,so that"...none of <br /> the fittings located on the top of the tank <br /> gad URage volume remaining are exposed to product due to <br /> 357 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 />