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WALTON - --- ENGINEERING, INC. Overfill Prevention Inspection - OPW 61 and 71 Series Devices ii Date3/ 13/2019 : Owner : 7-Eleven #35355 "Y ® ► 2019 Facility : 3202 West Hammer Ln , Stockton , CA, 95209 ENVIRONMENTAL NVIRON fl v , r , � � ENTAL HEALTH OPW Overfill Model Number: 71 SO nFPARTMENT Part 1 - Proper Height Setting Calculation Tank 1 Tank 2 Tank 3 Tank 4 Maximum Tank Volume Per: A Gallons 10369 10369 10369 Max shut off requirement for flapper is 95 % B 95% Multiply Max tank volume by 95 % C Gallons 9850 9850 9850 Use tank chart or ATG to determine height of D Inches 104 . 625 104 . 625 104 . 625 calculated volume Measure top of fill riser threads, or face seal E Inches 36 35 33 . 875 adapter Tank diameter (From Tank Chart) F Inches 117 . 75 117 . 75 117 . 75 Upper Tube in Tank (G) F-D = G G Inches 13 . 125 13 . 125 13 . 125 Subtract 2 " from upper tube in tank G-2 "= K K Inches 11 . 125 11 . 125 11 . 125 Calculated minimum upper tube length (I) 1 Inches 47 . 125 46 . 125 45 K+E=I Actual measured upper tube length (Without J Inches 48 . 25 47 . 25 45 . 5 fill adapter) (J) Part 2 - Device Certification Criteria Evaluation Does the overfill prevention device meet the 95% Yes Yes Yes requirement? Is the actual measured upper tube length 6 .5 inches or Yes Yes Yes more than the fill riser? (J must be 6 . 5 " or more than E) Does the overfill prevention device function as required? (Inspect the device for damage, contamination, freedom of Yes Yes Yes movement, weakening due to wear and corrosion Device Overfill Certification PASS / FAIL Pass Pass Pass Drop Tube Testing PASS / FAIL Pass Pass Pass Technician certifies that the device is operationally compliant. Signature of Technician: � ^ Date : 3/ 13/19 Technician's Name : Anthony Reyes