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Overfill Prevention Equipment Inspection <br /> . TanknoEogy OPW 61 and 71 Series Overfill Prevention Device Inspection <br /> Date: 8/4/2025 <br /> Customer Name: 7-ELEVEN, INC. <br /> Location#: 7-ELEVEN 38616 <br /> Location Address: 601 Carolyn Weston Blvd ,Stockton ,CA,95206 <br /> OPW Model Number: 71SO-4 <br /> Regular PREMIUM DSL <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 106.250 106.750 105.750 <br /> Measure top of fill riser threads,or face seal adapter when used,to tank top E inches 48.250 48.125 46.250 <br /> Tank diameter From Chart F inches 118.375 118.375 118.375 <br /> Upper Tube in tank(G) F-D=G G inches 12.125 11.625 12.625 <br /> Subtract 2 inches from upper tube in tank G-2"=H H inches 10.125 9.625 10.625 <br /> Calculated minimum upper tube length (1)H+E=I finches 58.375 57.750 56.875 <br /> Actual measured upper tube length(Without fill Jinches 60.750 58.500 59.375 <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 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 /> Pass Pass Pass <br /> Technician certifies that the device is operationally <br /> compliant. <br /> Comments: <br /> Signature of Technician: Date: <br /> 8/4/2025 <br /> Jesus Saldivar <br /> WO: NW1-2383364 <br />