DERR-2025-003383

Testing and Inspection Certificate
Tanknology Inc.
11000 North MoPac Expressway, Suite 500, Austin, TX 78759
800-800-4633 www.tanknology.com Page 1 of 1

Test Date 4/15/2025 Tanknology WO#NW1-2382638
Test Purpose COMPLIANCE Customer PO#

Customer Location

7-ELEVEN, INC.
P.O. BOX 711
DALLAS, TX 75221

7-ELEVEN 38707
1820 S Bangerter Hwy
State ID 4002579
Salt Lake City, UT 84104
Attn: ENVIRONMENTAL DEPARTMENT Attn:
[phone]
[phone]

Test / Inspection Description Item Tested Date
Tested Result
RP 1200 Overfill See test report for details 4/15/2025 Pass

Overfill Insp OPW Flapper Valve TNK 1 RUL 4/15/2025 Pass
Overfill Insp OPW Flapper Valve TNK 2 PUL 4/15/2025 Pass
Overfill Insp OPW Flapper Valve TNK3 Diesel 4/15/2025 Pass
Overfill Insp OPW Flapper Valve TNK4 TRK Diesel 4/15/2025 Pass

Tanknology Representative: David Edens Technician: David Mathie
Telephone: ()Technician Certification: (See forms)
7-ELEVEN 38707
1820 S Bangerter Hwy State ID 4002579
Salt Lake City, UT 84104
38707
Tanknology, Inc.
7-ELEVEN, INC.
972-828-7575
800-800-4633 04/15/2025
RUL
1
19782
118.375
OPW
PUL
2
7901
118.375
OPW
DSL
3
11904
118.375
OPW
DSL
4
19782
118.375
OPW
UT151
David Mathie
P.O. BOX 711
DALLAS, TX 75221
Overfill Prevention Equipment Inspection
OPW 61 and 71 Series Overfill Prevention Device Inspection
Date:4/15/2025
Customer Name:7-ELEVEN, INC.
Location #:7-ELEVEN 38707
Location Address:1820 S Bangerter Hwy State ID 4002579 ,Salt Lake City ,UT , 84104
OPW Model Number:71S0

PART 1) Proper height setting calculation
Maximum Tank Volume per: Tank Chart A gallons
Max shut off requirement for Flapper is 95% B 95%
Multiply Maximum tank volume by 95% C gallons
Use tank chart to determine height of calculated volume D inches
Measure top of fill riser threads, or face seal adapter when used, to tank top E inches
Tank diameter From Chart F inches
Upper Tube in tank (G) F - D = G G inches
Subtract 2 inches from upper tube in tank G - 2"= H H inches
Calculated minimum upper tube length (I) H + E = I I inches
Actual measured upper tube length (Without fill
adapter) (J) J inches
PART 2) Device certification criteria evaluation
Criteria 1
Does the overfill prevention device meet the 95% requirement?

Criteria 1a If the final shutoff volume is installed greater than 95%, is there at
least 250 gallons of ullage above the overfill device activation point
to ensure that none of the tank top fittings are exposed to product,
meeting the criteria established in EPA 280.20iic and per OPW
installation guidelines.

Criteria 2 Is the Actual measured upper tube length 6.5 inches
or more than the fill riser? (J must be 6.5" or more
than E)

Criteria 3 Does the overfill prevention device function as
required? (Inspect the device for damage,
contamination, freedom of movement,
weakening due to wear and corrosion)
PART 3) Device Certification PASS / FAIL
Technician certifies that the device is operationally
compliant.

TNK 1

19782.000
0.95
18792.900
106.375
55.875
118.375
12.000
10.000
65.875
66.875
Yes

NA

Yes

Yes

Pass
TNK 2

7901.000
0.95
7505.950
106.875
59.500
118.375
11.500
9.500
69.000
70.875
Yes

NA

Yes

Yes

Pass
TNK3

11904.000
0.95
11308.800
105.875
52.000
118.375
12.500
10.500
62.500
63.375
Yes

NA

Yes

Yes

Pass
TNK4 TRK

19782.000
0.95
18792.900
106.375
69.500
118.375
12.000
10.000
79.500
80.375
Yes

NA

Yes

Yes

Pass

Comments:
Signature of Technician: Date: 4/15/2025

David Mathie
WO: NW1- 2382638
Site Diagram
(This site diagram is for reference only and is not drawn to scale)

Work Order:2382638
Site ID / Name:38707 / 7-ELEVEN 38707
Address:1820 S Bangerter Hwy State ID 4002579
City:Salt Lake City State:UT Zip:84104