Attachment J EDW Edwards AFB Tanks 3 4 5 995269 995270 STI 4 Oct 2011.pdf

AST INSPECTIONS Edwards AFB, CA AFCESA Project Number: DDCO-11-D-3313 December2011 i

Table of Contents

1.0 Introduction

1.1 Inventory

1.2 Laws and Standards

1.3 Inspection Criteria

2.0 Overview of Inspections at Edwards AFB

2.1 Chilled Fill Stand and Military Service Station, Edwards AFB

3.0 Repairs and Cost Estimate

3.1 Tank Repairs

3.2 Recommended Inspection Schedule

3.3 Periodic AST Inspection by Owner

3.4 Formal External Inspection

3.5 Formal Internal Inspection

4.0 Strapping Chart

Figures Figure 2-1: Chilled Fill Stand Site Photo Figure 2-2: Tank 995269 Deficiency Form

Figure 2-3: Tank 995269 Photographs Figure 2-4: Sketch of Tank 995269

Figure 2-5: Tank 995270 Deficiency Form Figure 2-6: Tank 995270 Photographs

Figure 2-7: Sketch of Tank 995270 Figure 2-8: Military Service Station Site Photo

Figure 2-9: Tank 3 Deficiency Form Figure 2-10: Tank 3 Photographs

Figure 2-11: Sketch of Tank 3 Figure 2-12: Tank 4 Deficiency Form

Figure 2-13: Tank 4 Photographs Figure 2-14: Sketch of Tank 4

Figure 2-15: Tank 5 Deficiency Form Figure 2-16: Tank 5 Photographs

Figure 2-17: Sketch of Tank 5 ii

Tables Table 1-1: Points of Contact Table 1-2: DLA-Energy ASTs – Edwards AFB

Table 3-1: Deficiencies and Repairs – Tank 995269, Edwards AFB Table 3-2: Deficiencies and Repairs – Tank 995270, Edwards AFB

Table 3-3: Deficiencies and Repairs – Tank 3, Edwards AFB Table 3-4: Deficiencies and Repairs – Tank 4, Edwards AFB

Table 3-5: Deficiencies and Repairs – Tank 5, Edwards AFB

Appendixes

APPENDIX A: STI INSPECTOR CERTIFICATIONS

APPENDIX B: STRAPPING CHARTS

iii

Acronyms and Abbreviations

AFB Air Force Base AFCESA Air Force Civil Engineering Support Agency ANG Air National Guard AHJ authority having jurisdiction (usually, Fire Marshal) AST aboveground storage tank ATG automatic tank gauging CFH cubic feet per hour CFR Code of Federal Regulations DLA-Energy Defense Logistics Agency -Energy EPA Environmental Protection Agency EV(s) Emergency vents FEI Formal External Inspection ICC International Code Council IFC International Fire Code JP jet propellant (e.g., JP-8 fuel) MIC microbial-influenced corrosion MSDS material safety data sheet NFPA National Fire Protection Association NV normal vent OSHA Occupational Safety and Health Administration PEI Petroleum Equipment Institute PEV primary emergency vent POL petroleum, oil, lubricants RFI request for information RP recommended practice SEV secondary emergency vent SPCC Spill Prevention, Control, and Countermeasure STI Steel Tank Institute UL Underwriters Laboratories USAF United States Air Force UST underground storage tank UT ultrasonic thickness ’ foot or feet (after number) ” inch or inches (after number) Ft foot or feet (after number)

1.0 INTRODUCTION

Several significant changes in the last five years have resulted in increased complexity of the US Environmental Protection Agency’s (EPA) 40 CFR 112 “Spill Prevention, Control, and Countermeasure” (SPCC) rule. These changes affect the way flammable and combustible liquids are stored on Air Force bases and have increased the inspection requirements for aboveground storage tanks.

This report covers DLA-Energy maintained shop-built aboveground storage tanks (ASTs) at Edwards AFB and includes:

an updated inventory of all shop-built ASTs;

a technical evaluation of the tanks’ overall condition, appurtenances, and containment;

a schedule with requirements for regular inspections of ASTs by the owner/operator; and an updated schedule and requirements for Full External Inspections and Full Internal Inspections of the tanks by certified inspectors.

Inspections of aboveground storage tanks are required under several regulatory programs. The Steel Tank Institute (STI) publishes SP001 which is the only industry standard for the technical inspection of shop-built ASTs. Shop-built aboveground storage tanks (ASTs) are factory-constructed steel (carbon or stainless) vessels holding 55 to 50,000 gallons of Class I flammable to Class III combustible liquids in a site-specific, non-mobile utilization. During the inspection, ASTs are not emptied or otherwise taken off-line for the external inspection.

A two-person team from the San Antonio, Texas, office of AECOM (Mike Shiflet and William Gabehart; see APPENDIX A for STI certifications) performed formal external inspections on October 4, 2011 at Edwards AFB, California. Guided by Mr. Claudie Carr (see Table 1.1 for contact information) and an asset list provided by AFCESA, the team inspected a total of five ASTs.

Table 1-1: Points of Contact

Name Duty Section Telephone E-mail

Mr. Claudie Carr Liquid Fuels 661-277-3850 Claudie.Carr@edwards.af.mil

Mr. Robert Hosford Liquid Fuels 661-277-3850 Robert.Hosford@edwards.af.mil

Mr. Mike Shiflet Environmental 210-630-8984 Mike.Shiflet@aecom.com

Mr. Bill Gabehart Environmental 210-253-7501 Bill.gabehart@aecom.com

The AECOM team is trained and certified by STI as AST inspectors. They apply the construction, environmental impact, fire protection, and occupational safety standards codified by Underwriters Laboratories (UL), National Fire Protection Association (NFPA), International Code Council (ICC), OSHA, EPA, USAF, and STI itself. AECOM’s inspectors scrutinized the ASTs for a myriad of details, including ultrasonic thickness measurements, tank gauging and level control systems, corrosion protection systems, release prevention barriers, vapor recovery systems, alarms, and all tank appurtenances. They performed internal checks (as appropriate) for water, corrosion and leaked product. Digital photographs are used to document all of the AST inspections.

1.1 Inventory

AECOM received a list of five ASTs requiring a formal external inspection. No other tanks were inspected at the Base.

None of the tanks inspected at Edwards AFB were judged by inspectors to be in full compliance with contemporary national standards for shop-built ASTs of 55- to 50,000-gallon capacity. This report will provide an overview of the inspectors’ findings including deficiencies and related codes and standards; minor and major repairs needed and associated cost for the DLA-Energy tanks located at Edwards AFB.

Table 1-2: DLA-Energy ASTs – Edwards AFB

Base Name/Location Facility Name/Bldg# Tank ID Approximate

Size in Gallons Product Type

Edwards AFB, CA Chilled Fill Stand / 1734 995269 560 + 100 Additive

Edwards AFB, CA Chilled Fill Stand / 1734 995270 560 + 100 Additive

Edwards AFB, CA Military Service Station 3 15,000 Bio Diesel

Edwards AFB, CA Military Service Station 4 15,000 Mogas

Edwards AFB, CA Military Service Station 5 15,000 Mogas

1.2 Laws and Standards

Inspections were conducted in accordance with a number of national regulations or standards for AST inspections, as a component of the federally mandated SPCC program.

As mentioned above in Section 1.0, the applicable industry standard is STI’s Standard for the Inspection of Aboveground Storage Tanks, SP001 (4th edition, July 2006). Other guidelines, codes, or laws are pertinent to the inspection of shop-built AST’s, as well. Air Force Instruction 32-7044: Storage Tank Compliance addresses the environmental and engineering requirements for ASTs and associated piping. This instruction, in conjunction with industry specifications and regulatory mandates, sets a stringent standard for aboveground storage tanks on USAF bases.

Other applicable documents include:

MIL-STD-161G: Identification Methods for Bulk Petroleum Products System including Hydrocarbon Missile Fuels NFPA 30: Flammable and Combustible Liquids Code (2008 edition) NFPA 30A: Motor Fuel Dispensing Facilities and Repair Garages (2008) NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response (2007) NFPA 31: Standard for the Installation of Oil Burning Equipment (2011)

NFPA 70: National Electrical Code (2011) NFPA 77: Recommended Practice on Static Electricity (2007) NFPA 780: Standard for the Installation of Lightning Protection Systems (2011) NFPA 1: Uniform Fire Code (2009) NFPA Fire Protection Handbook, Volumes I and II (2008) ICC’s International Fire Code 2009 UFC 3-460-01: Petroleum Fuel Facilities (2010) UFGS 33-56-10: Factory Fabricated Fuel Storage Tanks (2008) UL 142: Steel Aboveground Tanks for Flammable and Combustible Liquids (2006) UL 2085: Protected Aboveground Tanks for Flammable and Combustible Liquids (1999) UL 80: Steel Tanks for Oil-Burner Fuels and Other Combustible Liquids (2007) US Occupational Safety and Health Administration’s 29 CFR 1910 Subpart D, “Walking-Working Surfaces” (pertaining to ladders, stairs, guardrails, and catwalks);

and, 29 CFR 1910.1200, “Hazard Communication” (pertaining to warning signs and labels) Petroleum Equipment Institute’s Recommended Practices for Installation of Aboveground Storage Systems for Motor Vehicle Fueling (PEI/RP) 200 (2008) State of California Air Resources Board, Executive Orders for Certification of Aboveground Storage Tank Vapor Recovery Systems (2008)

1.3 Inspection Criteria

At a minimum, AECOM inspectors examined the following tank components, in compliance with SP001 and other documents cited above:

Primary tank Secondary tank (if existent) Tank supports Tank anchors Tank foundation and external supports Tank gauges and alarms Insulation covering Tank appurtenances Normal vents Emergency vents Release-prevention barriers Spill-control systems Grounding Ladders, stairs, guardrails, and catwalks

Using handheld ultrasonic thickness (UT) gauges, AECOM inspectors measured the steel exteriors of the tanks. Measurements were taken on the outer shell; inspectors were alert for anomalous readings suggesting excessive metal loss through damage and/or corrosion. All tanks received at least 10 UT measurements.

When access to an interstice is possible, AECOM inspectors check the interstitial areas of double-wall tanks for corrosion, water, product, fill material, and/or sludge. The team probed the bottom of the fuel tank of both ASTs with water-indicating paste for signs of contamination. The team drew sketches of all ASTs and their appurtenances. To ensure documentation the team took at least four digital photographs of each inspected AST, as well as additional photographs to highlight any problem areas.

2.0 OVERVIEW OF INSPECTIONS AT EDWARDS AFB

On October 04, 2011, a formal external inspection was performed on Tanks 995269 & 995270 located at the Edwards AFB Chilled Fill Stand and Tanks 3, 4 and 5 located at the Military Service station on Edwards AFB During the inspection various discrepancies were noted, some serious.

One significant discrepancy associated with Tanks 995269 and 995270 was the fact that both tanks were leaking product out of several fittings and out of their man hatches. Also, both tanks were installed too close together. The required clearance between two tanks is 3 feet (36 inches);

these two tanks are only 21 inches apart. A significant discrepancy found on Tanks 3, 4 and 5 is that all three tanks are missing SEV’s. Another discrepancy noted is the PEV on Tank 3 is stuck closed and would not open after numerous attempts were made by the inspectors and base personal. A significant discrepancy found is the NV’s are in dual use on Tanks 4 and 5, also the NV’s on Tanks 3,4 and 5 are too small in relation to the fill port diameter.

Vapor Recovery

As required by State of California Air Resources Board, Executive Orders for Certification of Aboveground Storage Tank Vapor Recovery Systems (2008), the Mogas tanks 4 and 5, have both Stage I and Stage II vapor recovery systems installed and in use at the Military Service Station.

2.1 Chilled Fill Stand and Military Service Station, Edwards AFB Tanks 995269 and 995270 at Edwards AFB, CA are located at the Chilled Fill Stand, north of building 1734 and are used to store +100 additive. The Chilled Fill Stand is located on the east side of the taxiway. The Military Service Station is located next to building 2340 at Edwards AFB, CA. Tank 3 is a 15,000 gallon containing Bio Diesel and Tanks 4 and 5 are 15,000 gallon tanks containing Mogas. All three tanks located at the Military Service Station are used to fill government owned equipment and vehicles.

Figure 2-1: Chilled Fill Stand Site Photo

The tank to the left is Tank 995269 and the tank to the right is Tank 995270 both contain +100 additive.

Figure 2-2: Tank 995269 Deficiency Form

Tank 995269

General Tank Information

Date of Inspection October 04, 2011

Facility/Building # 1734

Facility name Chilled Fill Stand

Tank ID Tank 995269

Construction/Installation date Not available / Not available

Tank capacity 560 Gallons

Contents + 100 Additive

Manufacturer Modern Welding

Design standard UL 142

Tank status Active

Orientation Horizontal

Tank Shape Cylindrical

Tank External Dimensions Length:73.75” Width/diameter: 47.75” Height: N/A

Tank Internal Dimensions (per manufacturer)

Length: N/A Width/diameter: N/A Height: N/A

Construction material Carbon Steel

Release-prevention barrier Single Wall Tank

Dike Dimensions: 204” L, 137” W, 9” H

Containment Capacity: 1,089 Gallons

STI CATEGORY 1

Loading/Unloading Methods Pressure-filled / Pressure-dispensed

Additional Specifications

Thickness Measurements (outer shell): 0.127 - 0.131 +/- 0.001 inch (UL 142 minimum = 0.123 inch)

Deficiencies and Associated Citations

1. Missing NFPA 704 labels. [NFPA 30, para 21.7.2.1]

2. Signs of leakage at pipe fittings. [SP001, para 7.1.9.1]

3. Shell-to-shell spacing (or “clearance”) is less than 3 feet between AST’s. [NFPA 30, para 22.4.2.1]

4. PEV was seized shut. [SP001, para 7.1.9.2; NFPA 30, para 21.4.2.1.4]

5. Tank is not grounded. [NFPA 30, para 6.5.4.2]

6. Fill port is not labeled. [UL 2085, para 32.2]

7. Fill line is missing a check valve. [NFPA 30, 22.11.4.3]

8. Anti-siphon device missing on supply line. [NFPA 30, para 22.11.4.3; IFC, section 3403.6.6]

9. Inadequate level gauge. [NFPA 30, para 22.11.4.4; SP001, para 7.1.9.3]

10. Plastic shipping plug, low melting-point material, used on port. [NFPA 30, para 27.4.4, 27.4.4.1]

11. Unable to verify the presence of a drop leg at fill port. [NFPA 30, para 21.4.4]

12. Teflon tape, a material not compatible with most fuels, used on fittings. [NFPA 30, para 27.4.4, 27.4.4.1]

13. Unprotected sight glass gauge. [Good engineering practice]

14. AST dike holds some dirt, debris; consider cleaning out. [SP001, para 7.1.8.2;Good engineering practice]

Figure 2-3: Tank 995269 Photographs

The tank is missing NFPA 704 labels and is not grounded. Unable to verify the presence of a drop leg at the tank’s fill port (right arrow) and the PEV (left arrow) was seized shut. The PEV issue was corrected on-site by the inspector.

Tank 995269

There are signs of leakage at pipe fittings and the fill port is not labeled.

Tanks’ fill line is missing a check valve (upper arrow) and an anti-siphon device is missing from the supply line. The level gauge (lower left arrow) is made of glass and should be removed and a Morrison clock gauge with integral alarm should be installed on the topside of the tank.

Clearance distance between tanks is less than 3 feet (right arrow).

A plastic shipping plug, a low melting-point material, is being used on the topside check port.

Teflon tape, a material not compatible with most fuels, is used on fittings (arrows).

Unprotected sight glass gauge at bulk injector.

AST dike holds some sand and debris.

Figure 2-4: Sketch of Tank 995269

Figure 2-5: Tank 995270 Deficiency Form

Tank 995270

General Tank Information

Date of Inspection October 04, 2011

Facility/Building # 1734

Facility name Chilled Fill Stand

Tank ID Tank 995270

Construction/Installation date Not available / Not available

Tank capacity 560 Gallons

Contents + 100 Additive

Manufacturer Modern Welding

Design standard UL 142

Tank status Active

Orientation Horizontal

Tank Shape Cylindrical

Tank External Dimensions Length:73.75” Width/diameter: 47.75” Height: N/A

Tank Internal Dimensions (per manufacturer)

Length: N/A Width/diameter: N/A Height: N/A

Construction material Carbon Steel

Release-prevention barrier Single Wall Tank

Dike Dimensions: 204” L, 137” W, 9” H

Containment Capacity: 1,089 Gallons

STI CATEGORY 1

Loading/Unloading Methods Pressure-filled / Pressure-dispensed

Additional Specifications

Thickness Measurements (outer shell): 0.100 - 0.131 +/- 0.001 inch (UL 142 minimum = 0.123 inch)

Deficiencies and Associated Citations

1. Missing NFPA 704 labels. [NFPA 30, para 21.7.2.1]

2. Signs of leakage at pipe fittings. [SP001, para 7.1.9.1]

3. Shell-to-shell spacing (or “clearance”) is less than 3 feet between AST’s. [NFPA 30, para 22.4.2.1]

4. PEV was seized shut. [SP001, para 7.1.9.2; NFPA 30, para 21.4.2.1.4]

5. Tank is not grounded. [NFPA 30, para 6.5.4.2]

6. Fill port is not labeled. [UL 2085, para 32.2]

7. Fill line is missing a check valve. [NFPA 30, 22.11.4.3]

8. Anti-siphon device missing on supply line. [NFPA 30, para 22.11.4.3; IFC, section 3403.6.6]

9. Inadequate level gauge. [NFPA 30, para 22.11.4.4; SP001, para 7.1.9.3]

10. Plastic shipping plug, low melting-point material, used on port. [NFPA 30, para 27.4.4, 27.4.4.1]

11. Unable to verify the presence of a drop leg at fill port. [NFPA 30, para 21.4.4]

12. Teflon tape, a material not compatible with most fuels, used on fittings. [NFPA 30, para 27.4.4, 27.4.4.1]

13. Unprotected sight glass gauge. [Good engineering practice]

14. AST dike holds some dirt, debris; consider cleaning out. [SP001, para 7.1.8.2;Good engineering practice]

15. One out of 25 UT measurements was slightly below standard. [UL 142, table 21.1]

Figure 2-6: Tank 995270 Photographs

The tank is missing NFPA 704 labels and is not grounded. Unable to verify the presence of a drop leg at the tank’s fill port (left arrow) and the PEV (right arrow) was seized shut. The PEV issue was corrected on-site by the inspector.

Tank 995270

There are signs of leakage at pipe fittings (left arrow) and teflon tape, a material not compatible with most fuels, is used on fittings (right arrows).

Tanks’ supply line is missing an anti-siphon device and the fill line is missing a check valve (upper arrow) and is not labeled. The level gauge (center arrow) is made of glass and should be removed and a Morrison clock gauge with integral alarm should be installed on the topside of the tank. Clearance distance between tanks is less than 3 feet (left arrow).

A plastic shipping plug, a low melting-point material, is being used on the topside check port.

One (1) out of twenty-five (25) UT measurements was slightly below standard (arrow).

Unprotected sight glass gauge at bulk injector.

AST dike holds some sand and debris.

Figure 2-7: Sketch of Tank 995270

X on sketch indicates the approximate location of a low UT reading

Figure 2-8: Military Service Station Site Photo

The tank to the left is Tank 3 and contains Diesel the middle tank is Tank 4 and the tank on the right is Tank 5. Both Tank 4 and 5 contain Mogas.

Figure 2-9: Tank 3 Deficiency Form

Tank 3

General Tank Information

Date of Inspection October 04, 2011

Facility/Building # 2340

Facility name Military Service Station

Tank ID Tank 3

Construction/Installation date Not available / Not available

Tank capacity 15,000 Gallons

Contents Bio Diesel

Manufacturer Trusco Tank Inc.

Design standard SwRI 93-01

Tank status Active

Orientation Horizontal

Tank Shape Cylindrical

Tank External Dimensions Length:349.75” Width/diameter: 128.25” Height: N/A

Tank Internal Dimensions (per manufacturer)

Length: 338 Width/diameter: 114.625 Height: N/A

Construction material Carbon Steel

Release-prevention barrier Double Wall Tank

STI CATEGORY 1

Loading/Unloading Methods Pressure-filled / Pressure-dispensed

Additional Specifications

Thickness Measurements (outer shell): 0.247 - 0.316 +/- 0.001 inch (UL 142 minimum = 0.240 inch)

Deficiencies and Associated Citations

1. NFPA 704 labels are inadequate. [NFPA 30, para 21.7.2.1]

2. Interstice is improperly vented. This may allow water into the interstitial volume leading to corrosion. [UL 142, para 8.1;NFPA 30, 22.7.3.2.1]

3. Unable to verify the presence of a drop leg at fill port. [NFPA 30, para 21.4.4]

4. Level gauge is missing. [Good Engineering Practice]

5. Check valve missing at fill line. [NFPA 30, para 22.11.4.3; IFC, section 3403.6.6]

6. Cannot verify automatic shutoff valve for filling. [NFPA 30, para 22.11.4.5]

7. PEV is inoperable [NFPA 30, para 22.7.3.9; SP001, para 7.1.9.2]

8. Tank lacks an SEV. [UL 142, para 8.1]

9. Signs of leakage at fittings in dispensers. [SP001, para 7.1.9.1]

10. The tank does not have venting capacity requirement label for the PEV and SEV. [UL 142, para 48.2]

11. Plastic shipping plugs, low melting-point material, use on ports. [NFPA 30, para 27.4.4, 27.4.4.1]

12. Tanker containment and dispenser area integrity is suspect due to over 1,000 linear feet of cracks in the asphalt that could lead to fuel migrating into the soil under the asphalt. [AFI 32-7044, para 2.1.1.3; Good Engineering Practice]

13. NV’s 2-inch diameter is too small for use with fill line, 4-inch diameter. [UL 142, para 8.2]

Figure 2-10: Tank 3 Photographs

The tanks NFPA 704 labels are inadequate, although there is a NFPA 704 label (arrow) on the left and back sides of the tank there should also be one on the front of the tank where the access gate to the site is located. The tank is missing a liquid level gauge and the tank does not have a venting capacity requirement label for the PEV and SEV.

Tank 3

The tank is missing a check valve above the liquid level line on the fill line (top arrow). Unable to verify the presence of a drop leg or auto shut off valve at the tank’s fill port (right arrow). The interstice is improperly vented (left arrow). This may allow water into the interstitial space volume leading to corrosion.

The PEV (left arrow) is inoperable the inspectors and base personnel made numerous attempts to free the PEV but could not get it to function correctly. The tank lacks and SEV and has a plastic shipping plug, a low melting point material, in use on the port (right arrow) where the SEV should be located.

There are signs of fuel leakage (arrows) from the fittings in the dispensers.

Tanker containment and dispenser area integrity is suspect due to over 1,000 linear feet of cracks (arrows) in the asphalt that could lead to fuel migrating into the soil under the asphalt.

NV (arrow), 2-inch diameter, is too small for use with fill port 4-inch diameter.

Figure 2-11: Sketch of Tank 3

Figure 2-12: Tank 4 Deficiency Form

Tank 4

General Tank Information

Date of Inspection October 04, 2011

Facility/Building # 2340

Facility name Military Service Station

Tank ID Tank 4

Construction/Installation date Not available / Not available

Tank capacity 15,000 Gallons

Contents Mogas

Manufacturer Trusco Tank Inc.

Design standard SwRI 93-01

Tank status Active

Orientation Horizontal

Tank Shape Cylindrical

Tank External Dimensions Length:349.75” Width/diameter: 128.25” Height: N/A

Tank Internal Dimensions (per manufacturer)

Length: 338 Width/diameter: 114.625 Height: N/A

Construction material Carbon Steel

Release-prevention barrier Double Wall Tank

STI CATEGORY 1

Loading/Unloading Methods Pressure-filled / Pressure-dispensed

Additional Specifications

Thickness Measurements (outer shell): 0.251 - 0.316 +/- 0.001 inch (UL 142 minimum = 0.240 inch)

Deficiencies and Associated Citations

1. NFPA 704 labels are inadequate. [NFPA 30, para 21.7.2.1]

2. Interstice is improperly vented. This may allow water into the interstitial volume leading to corrosion. [UL 142, para 8.1;NFPA 30, 22.7.3.2.1]

5. Check valve missing at fill line. [NFPA 30, para 22.11.4.3; IFC, section 3403.6.6]

6. Tank 4’s NV is coupled with the NV from Tank 5 which results in an unacceptable dual use of the NV’s, each tank needs its own independent NV. Venting volume is significantly reduced which in turn may lead to a potential tank rupture during a pressure fill or a vacuum collapse during the dispense process. [NFPA 30, para 22.11.4.5.1]

7. Cannot verify automatic shutoff valve for filling. [NFPA 30, para 22.11.4.5]

8. Tank lacks an SEV. [UL 142, para 8.1]

9. The tank does not have venting capacity requirement label for the PEV and SEV. [UL 142, para 48.2]

10. Plastic shipping plugs, low melting-point material, use on ports. [NFPA 30, para 27.4.4, 27.4.4.1]

11. Tanker containment and dispenser area integrity is suspect due to over 1,000 linear feet of cracks in the asphalt secondary containment at dispenser; integrity is suspect. [AFI 32-7044, para 2.1.1.3; Good Engineering Practice]

12. Teflon tape, a material not compatible with most fuels, used on fittings on the tank and dispenser.

[NFPA 30, para 27.4.4, 27.4.4.1]

13. Copper tubing, low melting-point material, in use on the tank and dispensers. [NFPA 30, para 27.4.4, 27.4.4.1]

14. NV’s 2-inch diameter is too small for use with fill line, 4-inch diameter. [UL 142, para 8.2]

Figure 2-13: Tank 4 Photographs

The tanks NFPA 704 labels are inadequate, although there is a NFPA 704 label (arrow) on the back side of the tank there should also be one on the front of the tank where the access gate to the site is located also the numbers on the label are incorrect for unleaded fuel it should read 1,3,0.

The tank is missing a liquid level gauge and the tank does not have a venting capacity requirement label for the PEV and SEV.

Tank 4

The interstice is improperly vented (arrow). This may allow water into the interstitial space

The tank is missing a check valve above the liquid level line on the fill line (top arrow). Unable to verify the presence of a drop leg or auto shut off valve at the tank’s fill port (middle arrow).

Teflon tape (bottom arrow) a material not compatible with most fuels is used on fittings. Copper tubing (left arrow) a low melting point material in used on the tank.

Tank 4’s NV (arrow) is coupled with the NV from Tank 5 which is an unacceptable dual use of the NV’s, each tank requires an independent NV. Venting volume is significantly reduced which in turn may lead to a potential tank rupture during a pressure fill or a vacuum collapse during the dispense process. Additionally, the NV (arrow), 2-inch diameter, is too small for use with fill port 4-inch diameter.

The tank lacks and SEV and has a plastic shipping plug, a low melting point material, in use on the port (arrow) where the SEV should be located.

Tanker containment and dispenser area integrity is suspect due to over 1,000 linear feet of cracks (arrows) in the asphalt that could lead to fuel migrating into the soil under the asphalt.

Teflon tape (bottom arrow) a low melting point material and not compatible with most fuels used on fittings in the dispenser. Copper tubing (top arrow) a low melting point material is used in the dispenser.

Figure 2-14: Sketch of Tank 4

Figure 2-15: Tank 5 Deficiency Form

Tank 5

General Tank Information

Date of Inspection October 04, 2011

Facility/Building # 2340

Facility name Military Service Station

Tank ID Tank 5

Construction/Installation date Not available / Not available

Tank capacity 15,000 Gallons

Contents Mogas

Manufacturer Trusco Tank Inc.

Design standard SwRI 93-01

Tank status Active

Orientation Horizontal

Tank Shape Cylindrical

Tank External Dimensions Length:349.75” Width/diameter: 128.25” Height: N/A

Tank Internal Dimensions (per manufacturer)

Length: 338 Width/diameter: 114.625 Height: N/A

Construction material Carbon Steel

Release-prevention barrier Double Wall Tank

STI CATEGORY 1

Loading/Unloading Methods Pressure-filled / Pressure-dispensed

Additional Specifications

Thickness Measurements (outer shell): 0.245 - 0.316 +/- 0.001 inch (UL 142 minimum = 0.240 inch)

Deficiencies and Associated Citations

1. NFPA 704 labels are inadequate. [NFPA 30, para 21.7.2.1]

2. Interstice is improperly vented. This may allow water into the interstitial volume leading to corrosion. [UL 142, para 8.1;NFPA 30, 22.7.3.2.1]

5. Check valve missing at fill line. [NFPA 30, para 22.11.4.3; IFC, section 3403.6.6]

6. Tank 5’s NV is coupled with the NV on Tank 4 which is an unacceptable dual use of the NV’s, each tank requires an independent NV. Venting volume is significantly reduced which in turn may lead to a potential tank rupture during a pressure fill or a vacuum collapse during the dispense process. [NFPA 30, para 22.11.4.5.1]

7. Cannot verify automatic shutoff valve for filling. [NFPA 30, para 22.11.4.5]

8. Tank lacks an SEV. [UL 142, para 8.1]

9. The tank does not have venting capacity requirement label for the PEV and SEV. [UL 142, para 48.2]

10. Plastic shipping plugs, a low melting-point material, use on ports. [NFPA 30, para 27.4.4, 27.4.4.1]

11. Tanker containment and dispenser area integrity is suspect due to over 1,000 linear feet of cracks in the asphalt secondary containment at dispenser; integrity is suspect. [AFI 32-7044, para 2.1.1.3; Good Engineering Practice]

12. Teflon tape, a material not compatible with most fuels, used on fittings on the tank and dispenser.

[NFPA 30, para 27.4.4, 27.4.4.1]

13. Copper tubing, a low melting-point material, in use on the tank and dispensers. [NFPA 30, para 27.4.4, 27.4.4.1]

14. NV’s 2-inch diameter is too small for use with fill line, 4-inch diameter. [UL 142, para 8.2]

Figure 2-16: Tank 5 Photographs

The tanks NFPA 704 labels are inadequate, although there is a NFPA 704 label (arrow) on the right and back side of the tank there should also be one on the front of the tank where the access gate to the site is located also the numbers on the label are incorrect for unleaded fuel it should read 1,3,0. The tank is missing a liquid level gauge and the tank does not have a venting capacity requirement label for the PEV and SEV.

Tank 5

The interstice is improperly vented (arrow). This may allow water into the interstitial space

The tank is missing a check valve above the liquid level line on the fill line (top arrow). Unable to verify the presence of a drop leg or auto shut off valve at the tank’s fill port (bottom arrow).

Tank 5’s NV (arrow) is coupled with the NV on Tank 4 which is an unacceptable dual use of the NV’s, each tank requires an independent NV. Venting volume is significantly reduced which in turn may lead to a potential tank rupture during a pressure fill or a vacuum collapse during the dispense process. Additionally, the NV (arrow), 2-inch diameter, is too small for use with fill port 4-inch diameter.

The tank lacks and SEV and has a plastic shipping plug, low melting point material in use on the port (arrow) where the SEV should be located.

Teflon tape (top & bottom arrow) a material not compatible with most fuels is used on fittings.

Copper tubing (middle arrow) a low melting point material in used on the tank.

Tanker containment and dispenser area integrity is suspect due to over 1,000 linear feet of cracks in the asphalt that could lead to fuel migrating into the soil under the asphalt.

Teflon tape (right arrow) a material not compatible with most fuels is used on fittings in the dispenser. Copper tubing (left arrow) a low melting point material is used in the dispenser.

Figure 2-17: Sketch of Tank 5

3.0 REPAIRS AND COST ESTIMATE

3.1 Tank Repairs

The repairs associated with the findings during the AST external inspection for tanks are shown in Table 3.1, Table 3.2, Table 3.3, Table 3.4 and Table 3.5. Each table displays the findings for each tank along with the repair recommended and estimated cost for each repair.

Table 3-1: Deficiencies and Repairs – Tank 995269, Edwards AFB

Deficiencies-Tank 995269 Recommended Repair Action Programming Cost

EstimateMinor Major

Missing NFPA 704 labels.

Place labels where they are visible from all directions of approach.

In-House

($20)

Product leaking at bulk supply line and man hatch on top of tank.

Check supply line and man hatch / fittings for cause of leak (not tight enough, Teflon tape etc…) and make repairs.

In-House ($100)

Shell-to-shell clearance spacing between tanks is less than 3 feet.

Drain and relocate Tank 995270 to 15-inches west of Tank 995269. This will allow the proper distance of 3 feet between the two tanks.

See Tank 995270

PEV was seized shut; had to be forced open.

Corrected on site. The PEV should be exercised once a month to ensure proper function.

In House

Missing grounding.

Install minimum 10-gauge solid or braided copper wire, grounded into steel tank

$50

Fill port is not labeled. Stencil or apply label on or beside spill box.

In-House

($20)

Fill line missing check valve. Install check valve at fill line.

In-House

($400)

Glass level gauge not suitable for this type of application.

Remove gauge and install an anti-siphon device on supply line. Install a clock gauge with integral alarm on the 3-in.

check port on the topside of the tank.

In-House

($1,500)

Deficiencies-Tank 995269 Recommended Repair Action Programming Cost

EstimateMinor Major

Plastic 3 inch shipping plug, low melting-point material, used on port.

Replace plastic plug with steel or black iron plug.

In-House ($50)

Could not verify drop leg at fill port.

Install a drop leg on fill port if missing. $500

Teflon tape, an incompatible material, is used on fittings.

Remove tape and apply POL rated pipe dope. $50

Glass gauge is not rated for fuel system applications due to its temperature and pressure rating.

Replace with magnetic flow meter. $2,000

Sand and debris found in tank’s secondary containment

Remove sand / debris and perform periodic inspections. In-House

Table 3-2: Deficiencies and Repairs – Tank 995270, Edwards AFB

Deficiencies-Tank 995270 Recommended Repair Action Programming Cost

EstimateMinor Major

Missing NFPA 704 labels.

Place labels where they are visible from all directions of approach.

In-House

($20)

Product leaking at bulk supply line and man hatch on top of tank.

Check supply line and man hatch / fittings for cause of leak (not tight enough, Teflon tape etc…) and make repairs.

In-House ($100)

Shell-to-shell clearance spacing between tanks less than 3 feet.

Drain and relocate Tank 995270 to 15-inches west of Tank 995269. This will allow the proper distance of 3 feet between the two tanks.

$2,500

PEV was seized shut; had to be forced open.

Corrected on site. The PEV should be exercised once a month to ensure proper function.

In House

Missing grounding.

Install minimum 10-gauge solid or braided copper wire, grounded into steel tank

$50

Fill port is not labeled. Stencil or apply label on or beside spill box.

($20)

Deficiencies-Tank 995270 Recommended Repair Action Programming Cost

EstimateMinor Major

Fill line missing check valve. Install check valve at fill line.

In-House

($400)

Glass level gauge not suitable for this type of application.

Remove gauge and install an anti-siphon device on supply line. Install a clock gauge with integral alarm on the 3-in.

check port on the topside of the tank.

In-House

($1,500)

Plastic 3 inch shipping plug, low melting-point material, used on port.

Replace plastic plug with steel or black iron plug.

In-House ($50)

Could not verify drop leg at fill port.

Install a drop leg on fill port if missing. $500

Teflon tape, an incompatible material, is used on fittings.

Remove tape and apply POL rated pipe dope. $50

Glass gauge is not rated for fuel system applications due to its temperature and pressure rating.

Replace with magnetic flow meter. $2,000

Sand and debris found in tank’s secondary containment

Remove sand / debris and perform periodic inspections. In-House

One out of 25 UT measurements was slightly below standard. Monitor shell thickness.

In-House

($2,000)

Table 3-3: Deficiencies and Repairs – Tank 3, Edwards AFB

Deficiencies-Tank 3 Recommended Repair Action Programming Cost

EstimateMinor Major

Missing NFPA 704 labels.

Place labels where they are visible from all directions of approach.

In-House

($20)

Interstice is improperly vented.

This may allow water into the interstitial volume leading to corrosion.

Remove vented caps from 3 6-inch interstice ports and replace with steel plugs.

In-House

($250)

Unable to verify the presence of a drop leg at fill port.

Install a drop leg on fill port if missing $500

Level gauge is missing. Install a clock gauge with integral alarm on the tank.

($1,500)

Deficiencies-Tank 3 Recommended Repair Action Programming Cost

EstimateMinor Major

Fill line missing check valve. Install check valve at fill line above the liquid level line.

In-House

($400)

Cannot verify automatic shutoff valve for filling

Install auto shutoff valve on fill port if missing

In-House ($1,000)

PEV is inoperable.

Continue to attempt to free the PEV or replace the PEV if it cannot be returned to a proper working operation.

The PEV should be exercised once a month of ensure proper function.

In-House

($700)

Tank lacks an SEV.

Install an SEV with a venting capacity of at least 483,390 cfh on the port designed for an SEV. The SEV should be exercised once a month of ensure proper function.

In-House

($700)

Signs of leakage at fittings in the dispensers.

Check fittings and line for cause of leak (not tight enough, Teflon tape etc…) and make repairs.

In-House ($100)

The tank does not have venting capacity requirement label for the PEV and SEV.

Install a label that states this tank requires a PEV venting capacity of at least 441,940 cfh and SEV venting capacity of at least 483,390 cfh

In House ($50)

Plastic shipping plugs, low melting point material, use on ports.

See Above this deficiency will be repaired when the new SEV is installed See Above SEV repair

Tanker containment and dispenser area integrity is suspect due to over 1,000 linear feet of cracks in the asphalt that could lead to fuel migrating into the soil under the asphalt.

Remove approximately 30,000 square feet of damaged asphalt at the tanker containment and dispenser areas and replace with an improved fuel combatable curbed concrete containment system.

$90,000

Deficiencies-Tank 3 Recommended Repair Action Programming Cost

EstimateMinor Major

NV, 2-inch diameter, is too small for use with fill port 4-inch diameter.

Install a 4-inch diameter NV onto the available 4-inch port.

In-House

($300)

Table 3-4: Deficiencies and Repairs – Tank 4, Edwards AFB

Deficiencies-Tank 4 Recommended Repair Action Programming Cost

EstimateMinor Major

Missing NFPA 704 labels.

Place labels where they are visible from all directions of approach.

In-House

($20)

Interstice is improperly vented.

This may allow water into the interstitial volume leading to corrosion.

Remove vented caps from 3 6-inch interstice ports and replace with steel plugs.

In-House

($250)

Unable to verify the presence of a drop leg at fill port.

Install a drop leg on fill port if missing $500

Level gauge is missing. Install a clock gauge with integral alarm on the tank.

In-House

($1,500)

Fill line missing check valve. Install check valve at fill line above the liquid level line.

In-House

($400)

Tank 4’s 2-inch NV is too small for the4-inch fill and is coupled with the NV from Tank 5 which results in an unacceptable dual use of the NV.

Remove the incoming line from Tank 5’s NV and Install a 4-inch diameter NV onto the available 4-inch port with a new 4-inch conservation vent.

In-House

($600)

Cannot verify automatic shutoff valve for filling

Install auto shutoff valve on fill port if missing

In-House ($1,000)

Tank lacks an SEV.

Install an SEV with a venting capacity of at least 483,390 cfh on the port designed for an SEV. The SEV should be exercised once a month of ensure proper function.

($700)

Deficiencies-Tank 4 Recommended Repair Action Programming Cost

EstimateMinor Major

The tank does not have venting capacity requirement label for the PEV and SEV.

Install a label that states this tank requires a PEV venting capacity of at least 441,940 cfh and SEV venting capacity of at least 483,390 cfh

In House ($50)

Plastic shipping plugs, low melting point material, use on ports.

See Above this deficiency will be repaired when the new SEV is installed See Above SEV repair

Tanker containment and dispenser area integrity is suspect due to over 1,000 linear feet of cracks in the asphalt that could lead to fuel migrating into the soil under the asphalt.

Remove approximately 30,000 square feet of damaged asphalt at the tanker containment and dispenser areas and replace with an improved fuel combatable curbed concrete containment system.

Included in Tank 3’s repair.

Teflon tape, an incompatible material, is used on fittings.

Remove tape and apply POL rated pipe dope.

In-House

($50)

Copper tubing, low melting point material in use on the tank and dispensers.

Remove all copper tubing and replace it steel line tubing.

In-House

($200)

Table 3-5: Deficiencies and Repairs – Tank 5, Edwards AFB

Deficiencies-Tank 5 Recommended Repair Action Programming Cost

EstimateMinor Major

Missing NFPA 704 labels.

Place labels where they are visible from all directions of approach.

In-House

($20)

Interstice is improperly vented.

This may allow water into the interstitial volume leading to corrosion.

Remove vented caps from 3 6-inch interstice ports and replace with steel plugs.

In-House

($250)

Unable to verify the presence of a drop leg at fill port.

Install a drop leg on fill port if missing $500

Level gauge is missing. Install a clock gauge with integral alarm on the tank.

In-House

($1,500)

Fill line missing check valve. Install check valve at fill line above the liquid level line.

($400)

Deficiencies-Tank 5 Recommended Repair Action Programming Cost

EstimateMinor Major

Tank 5’s 2-inch NV is too small for the4-inch fill and is coupled with the NV from Tank 4 which results in an unacceptable dual use of the NV.

Remove the incoming line from Tank 4’s NV and Install a 4-inch diameter NV onto the available 4-inch port with a new 4-inch conservation vent.

In-House

($600)

Cannot verify automatic shutoff valve for filling

Install auto shutoff valve on fill port if missing

In-House ($1,000)

Tank lacks an SEV.

Install an SEV with a venting capacity of at least 483,390 cfh on the port designed for an SEV. The SEV should be exercised once a month of ensure proper function.

In-House

($700)

The tank does not have venting capacity requirement label for the PEV and SEV.

Install a label that states this tank requires a PEV venting capacity of at least 441,940 cfh and SEV venting capacity of at least 483,390 cfh

In House ($50)

Plastic shipping plugs, low melting point material, use on ports.

See Above this deficiency will be repaired when the new SEV is installed See Above SEV repair

Tanker containment and dispenser area integrity is suspect due to over 1,000 linear feet of cracks in the asphalt that could lead to fuel migrating into the soil under the asphalt.

Remove approximately 30,000 square feet of damaged asphalt at the tanker containment and dispenser areas and replace with an improved fuel combatable curbed concrete containment system.

Included in Tank 3’s repair.

Teflon tape, an incompatible material, is used on fittings..

Remove tape and apply POL rated pipe dope.

In-House

($50)

Copper tubing, low melting point material in use on the tank and dispensers.

Remove all copper tubing and replace it steel line tubing.

($200)

3.2 Recommended Inspection Schedule

The inspection criteria below assume that all deficiencies noted in this report have been corrected. These tanks are maintained and serviced by multiple parties and are constructed of steel unless otherwise noted. Tank-inspection methods and frequencies are specified in the base’s SPCC plan. Additionally, an industry reference STI-SP001 4th Edition Appendix C, contains a periodic, monthly and annual inspection checklist that can be referred to as a resource during the performance of inspections. The following inspection recommendations should be compared to the most current SPCC plan, with revisions made as necessary.

3.3 Periodic AST Inspection by Owner

The owner or owner’s inspector should perform a visual (on-site) documented inspection to assess the general AST conditions at least once a month and whenever filling the tanks. These inspections will typically be conducted by the operator or owner of the tank; no formal certification is required but the inspector should be cognizant of the tank’s operation and devices.

Monthly:

All tanks, piping, and appurtenances should be inspected visually for leaks.

The containment area used by the delivery trucks will be inspected for leaks, with particular attention to breaches, cracks, and any other condition that could contribute to an accidental release of product outside the containment.

Check for debris in area of tank and containment sump and ensure egress pathways are clear.

Check to ensure all tank openings are properly sealed.

Ensure tank’s liquid-level gauge is in good condition and readable by the person filling the tank.

Exercise each emergency relief vent to ensure it has not seized shut from, or its movement impaired by, internal corrosion and/or petrochemical residue.

Inspection must be conducted by base personnel knowledgeable of the tanks and their components, with the results logged on a monthly inspection log sheet.

Annually:

All sensors used to monitor interstitial spaces or liquid level must be inspected annually in accordance with manufacturer’s recommendations.

Additional inspection and testing of appurtenances and devices should be done in accordance with the manufacturers and/or industry and regulatory requirements.

3.4 Formal External Inspection

This inspection should be performed every 10 years. A detailed checklist with which to identify, record, and document all aspects of each inspection should be used as the record of the inspection. FEI must be performed by STI-certified AST inspector(s).

3.5 Formal Internal Inspection

The tank capacities are below 30,000 gallons, therefore; internal inspections are not required.

4.0 STRAPPING CHART

A strapping chart (see APPENDIX B) is prepared for all five storage tanks. The strapping charts, divided into 1/16th inch increments, are used in conjunction with a dipstick to show the amount of product stored in the tank in relation to the depth of product in the tank.

Strapping charts are provided for Tank 995269 and Tank 995270 both contain + 100 additive and Tank 3 Bio Diesel and Tank 4 and 5 both contain Mogas.

APPENDIX A: STI INSPECTOR CERTIFICATIONS

APPENDIX B: STRAPPING CHARTS

L

Depth Inches 8 1/16 8 2/16 8 3/16 8 4/16 8 5/16 8 6/16 8 7/16 8 8/16 8 9/16 8 10/16 8 11/16 8 12/16 8 13/16 8 14/16 8 15/16

9 1/16 9 2/16 9 3/16 9 4/16 9 5/16 9 6/16 9 7/16 9 8/16 9 9/16 9 10/16 9 11/16 9 12/16 9 13/16 9 14/16 9 15/16

10 1/16 10 2/16 10 3/16 10 4/16 10 5/16 10 6/16 10 7/16 10 8/16 10 9/16 10 10/16 10 11/16 10 12/16 10 13/16 10 14/16 10 15/16

Length = 72 inches

Volume Gallons

62.3 63.0 63.7 64.4 65.1 65.8 66.5 67.2 67.9 68.7 69.4 70.1 70.8 71.5 72.3 73.0 73.7 74.5 75.2 75.9 76.7 77.4 78.1 78.9 79.6 80.4 81.1 81.9 82.6 83.4 84.1 84.9 85.6 86.4 87.2 87.9 88.7 89.4 90.2 91.0 91.8 92.5 93.3 94.1 94.9 95.6 96.4 97.2

Inches 11 1/1 11 2/1 11 3/1 11 4/1 11 5/1 11 6/1 11 7/1 11 8/1 11 9/1 11 10/1 11 11/1 11 12/1 11 13/1 11 14/1 11 15/1

12 1/1 12 2/1 12 3/1 12 4/1 12 5/1 12 6/1 12 7/1 12 8/1 12 9/1 12 10/1 12 11/1 12 12/1 12 13/1 12 14/1 12 15/1

13 1/1 13 2/1 13 3/1 13 4/1 13 5/1 13 6/1 13 7/1 13 8/1 13 9/1 13 10/1 13 11/1 13 12/1 13 13/1 13 14/1 13 15/1

Tank Ca

Horizon

Diam

Ta

P h s

Volume Gallons

6 98.0 6 98.8 6 99.6 6 100.3 6 101.1 6 101.9 6 102.7 6 103.5 6 104.3

16 105.1 16 105.9 16 106.7 16 107.5 16 108.3 16 109.1

109.9 6 110.7 6 111.5 6 112.4 6 113.2 6 114.0 6 114.8 6 115.6 6 116.4 6 117.2

16 118.1 16 118.9 16 119.7 16 120.5 16 121.4 16 122.2

123.0 6 123.8 6 124.7 6 125.5 6 126.3 6 127.2 6 128.0 6 128.8 6 129.7 6 130.5

16 131.4 16 132.2 16 133.0 16 133.9 16 134.7 16 135.6

136.4 alibration C ntal Cylindrical Ta meter = 47.75 inch ank 995269 age 2 of 5 s

De Inc 14 2 14 3 14 4 14 5 14 6 14 7 14 8 14 9 14 1 14 1 14 1 14 1 14 1 14 1

15 2 15 3 15 4 15 5 15 6 15 7 15 8 15 9 15 1 15 1 15 1 15 1 15 1 15 1

16 2 16 3 16 4 16 5 16 6 16 7 16 8 16 9 16 1 16 1 16 1 16 1 16 1 16 1

Chart ank hes pth hes

Volum Gallo

1/16 137.

2/16 138.

3/16 139.

4/16 139.

5/16 140.

6/16 141.

7/16 142.

8/16 143.

9/16 144.

0/16 144.

1/16 145.

2/16 146.

3/16 147.

4/16 148.

5/16 149.

5 150.

1/16 151.

2/16 151.

3/16 152.

4/16 153.

5/16 154.

6/16 155.

7/16 156.

8/16 157.

9/16 157.

0/16 158.

1/16 159.

2/16 160.

3/16 161.

4/16 162.

5/16 163.

6 164.

1/16 164.

2/16 165.

3/16 166.

4/16 167.

5/16 168.

6/16 169.

7/16 170.

8/16 171.

9/16 172.

0/16 172.

1/16 173.

2/16 174.

3/16 175.

4/16 176.

5/16 177.

7 178.

Total Volum me ons .3 .1 .0 .8 .7 .5 .4 .2 .1 .9 .8 .7 .5 .4 .2 .1 .0 .8 .7 .6 .4 .3 .2 .0 .9 .8 .7 .5 .4 .3 .2 .0 .9 .8 .7 .6 .4 .3 .2 .1 .0 .9 .7 .6 .5 .4 .3 .2

D In me = 558.2 gallons

Depth nches

Vo Ga

7 1/16 17 7 2/16 18 7 3/16 18 7 4/16 18 7 5/16 18 7 6/16 18 7 7/16 18 7 8/16 18 7 9/16 18 7 10/16 18 7 11/16 18 7 12/16 18 7 13/16 18 7 14/16 19 7 15/16 19

18 19 8 1/16 19 8 2/16 19 8 3/16 19 8 4/16 19 8 5/16 19 8 6/16 19 8 7/16 19 8 8/16 19 8 9/16 20 8 10/16 20 8 11/16 20 8 12/16 20 8 13/16 20 8 14/16 20 8 15/16 20

19 20 9 1/16 20 9 2/16 20 9 3/16 20 9 4/16 21 9 5/16 21 9 6/16 21 9 7/16 21 9 8/16 21 9 9/16 21 9 10/16 21 9 11/16 21 9 12/16 21 9 13/16 21 9 14/16 21 9 15/16 22

20 22 s lume allons 79.1 80.0 80.9 81.8 82.7 83.5 84.4 85.3 86.2 87.1 88.0 88.9 89.8 90.7 91.6 92.5 93.4 94.3 95.2 96.1 97.0 98.0 98.9 99.8 00.7 01.6 02.5 03.4 04.3 05.2 06.1 07.0 07.9 08.9 09.8 10.7 11.6 12.5 13.4 14.3 15.2 16.2 17.1 18.0 18.9 19.8 20.7 21.7

Inches 20 1/16 20 2/16 20 3/16 20 4/16 20 5/16 20 6/16 20 7/16 20 8/16 20 9/16 20 10/16 20 11/16 20 12/16 20 13/16 20 14/16 20 15/16

21 1/16 21 2/16 21 3/16 21 4/16 21 5/16 21 6/16 21 7/16 21 8/16 21 9/16 21 10/16 21 11/16 21 12/16 21 13/16 21 14/16 21 15/16

22 1/16 22 2/16 22 3/16 22 4/16 22 5/16 22 6/16 22 7/16 22 8/16 22 9/16 22 10/16 22 11/16 22 12/16 22 13/16 22 14/16 22 15/16

Length = 72 inches

Volume Gallons

222.6 223.5 224.4 225.3 226.3 227.2 228.1 229.0 229.9 230.9 231.8 232.7 233.6 234.5 235.5 236.4 237.3 238.2 239.2 240.1 241.0 241.9 242.9 243.8 244.7 245.6 246.6 247.5 248.4 249.3 250.3 251.2 252.1 253.1 254.0 254.9 255.8 256.8 257.7 258.6 259.6 260.5 261.4 262.3 263.3 264.2 265.1 266.1

23 1/1 23 2/1 23 3/1 23 4/1 23 5/1 23 6/1 23 7/1 23 8/1 23 9/1 23 10/1 23 11/1 23 12/1 23 13/1 23 14/1 23 15/1

24 1/1 24 2/1 24 3/1 24 4/1 24 5/1 24 6/1 24 7/1 24 8/1 24 9/1 24 10/1 24 11/1 24 12/1 24 13/1 24 14/1 24 15/1

25 1/1 25 2/1 25 3/1 25 4/1 25 5/1 25 6/1 25 7/1 25 8/1 25 9/1 25 10/1 25 11/1 25 12/1 25 13/1 25 14/1 25 15/1

Tank Ca

Horizon

Diam

Ta

P h s

Volume Gallons

6 267.0 6 267.9 6 268.8 6 269.8 6 270.7 6 271.6 6 272.6 6 273.5 6 274.4

16 275.4 16 276.3 16 277.2 16 278.1 16 279.1 16 280.0

280.9 6 281.9 6 282.8 6 283.7 6 284.7 6 285.6 6 286.5 6 287.4 6 288.4 6 289.3

16 290.2 16 291.2 16 292.1 16 293.0 16 294.