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. 'Tanknofogy Overfill Prevention Equipment Inspection <br /> OPW 61 and 71 Series Overfill Prevention Device Inspection <br /> Date: 12/16/2025 <br /> Customer Name: 7-ELEVEN, INC. <br /> Location#: 7-ELEVEN#20632, MKT 2368 <br /> Location Address: 4627 DA VINCI DR @ MARCH LN ,STOCKTON ,CA,95207 <br /> OPW Model Number: 71so <br /> 87 91 diesel <br /> PART 1)Proper height setting calculation <br /> Maximum Tank Volume per:Tank Chart Agallons 19782.000 7901.000 11904.000 <br /> Max shut off requirement for Flapper is 95% B 95% 0.95 0.95 0.95 0.95 <br /> Multiply Maximum tank volume by 95% C gallons 18792.900 7505.950 11308.800 <br /> Use tank chart to determine height of calculated volume D inches 106.250 106.875 105.875 <br /> Measure top of fill riser threads,or face seal adapter when used,to tank top E inches 44.875 47.875 48.375 <br /> Tank diameter From Chart Finches 118.375 118.375 118.375 <br /> Upper Tube in tank(G) F-D=G G inches 12.125 11.500 12.500 <br /> Subtract 2 inches from upper tube in tank G-2"=H H inches 10.125 9.500 10.500 <br /> Calculated minimum upper tube length (I)H+E=I l inches 55.000 57.375 58.875 <br /> Actual measured upper tube length(Without fill J inches 58.250 62.625 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? T <br /> Criteria 1a 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 NA NA NA <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 /> Technician certifies that the device is operationally Pass Pass Pass <br /> compliant. <br /> Comments: <br /> Signature of Technician: Date: 12/16/2025 <br /> Benjamin Baunach <br /> WO: NW1-2383581 <br />