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Overfill Prevention Equipment Inspection <br /> o. Tankir logy OPW 61 and 71 Series Overfill Prevention Device Inspection <br /> Date : 9/7/2021 <br /> Customer Name : 7-ELEVEN , INC . - PROJECT FORUM <br /> Location #: 7-ELEVEN 41187 <br /> Location Address : 1829 N Wilson Way , Stockton , CA , 95204 <br /> OPW Model Number: <br /> Put Dsl 87 <br /> PART 1 ) Proper height setting calculation <br /> Maximum Tank Volume per: Agallons 7901 . 000 11904 . 000 19782 . 000 <br /> Max shut off requirement for Flapper is 95 % a 95% 0 . 95 0 . 95 0 . 95 0 . 95 <br /> Multiply Maximum tank volume by 95 % C gallons 7505 . 950 11308 . 800 18792 . 900 <br /> Use tank chart to determine height of calculated volume D inches 106 . 375 105 . 875 106 . 250 <br /> Measure top of fill riser threads , or face seal adapter when used , to tank top Einches 49 . 000 48 . 000 51 . 500 <br /> Tank diameter From Chart Finches 118 . 000 118 . 000 118 . 000 <br /> Upper Tube in tank (G) F - D = G G inches 11 . 625 12 . 125 11 . 750 <br /> Subtract 2 inches from upper tube in tank G - 2 "= H H inches 9 . 625 10 . 125 9 . 750 <br /> Calculated minimum upper tube length ( 1 ) H + E = I I inches 58 . 625 58 . 125 61 . 250 <br /> Actual measured upper tube length (Without fill Jinches 60 . 500 60 . 000 62 . 750 <br /> adapter) (J) <br /> PART 2) Device certification criteria evaluation <br /> Criteria 1 Yes Yes Yes <br /> Does the overfill prevention device meet the 95 % requirement? <br /> Criteria 1 a If the final shutoff volume is installed greater than 95 % , is there at <br /> least 250 gallons of ullage above the overfill device activation point Yes Yes Yes <br /> to ensure that none of the tank top fittings are exposed to product, <br /> meeting the criteria established in EPA 280 . 20iic and per OPW <br /> installation guidelines . <br /> Criteria 2 Is the Actual measured upper tube length 6 . 5 inches Yes Yes Yes <br /> or more than the fill riser? (J must be 6. 5" or more <br /> than E) <br /> Criteria 3 Does the overfill prevention device function as <br /> required ? (Inspect the device for damage, Yes Yes Yes <br /> contamination , freedom of movement, <br /> weakening due to wear and corrosion ) <br /> PART 3 ) Device Certification PASS / FAIL <br /> Pass Pass Pass <br /> Technician certifies that the device is operationally <br /> compliant . <br /> Comments : <br /> Signature of Technician : Date : 9/7/2021 <br /> Brent Bowen <br /> W0 : NW1 - 2353207 <br />