MCG-FAC 19-21-FY20-Final.pdf

US Army Corps of Engineers Omaha District

API 653 In-Service Inspection Report

McGuire Air Force Base, New Jersey Facility 19-21

Tank 4

US Army Corps of Engineers Center of Expertise for Petroleum, Oils and Lubricants

USACE POL-MCX

15 January 2021

API 653 In-Service Inspection Report McGuire AFB, New Jersey

Table of Contents

ACRONYMS AND ABBREVIATIONS

GENERAL SUMMARY

INSPECTION DATE

STATE REGULATIONS

PREVIOUS INSPECTION DATES

RECOMMENDED FUTURE INSPECTION DATES

GENERAL TANK INFORMATION

A. GENERAL PROJECT INFORMATION

1. API 653 Inspection

2. Site Information

3. Previous Inspection and Repairs

4. Future Projects

B. TANK INSPECTION COMMENTS

1. Tank Construction

2. Tank Foundation

3. Tank Shell

4. Tank Appurtenances

5. Tank Coating

6. Tank Piping System

7. Fire Protection System

8. Secondary Containment

C. FINDINGS AND RECOMMENDATIONS

1. MANDATORY REPAIRS per API 653, NFPA, or CFRs

2. SHORT-TERM RECOMMENDATIONS

APPENDIX ‘A’: ENGINEERING CALCULATIONS AND DRAWINGS

SHELL SETTLEMENT SURVEY

SHELL THICKNESS CALCULATIONS

SHELL, NOZZLE, AND ROOF UT MEASUREMENTS

SHELL LAYOUT DRAWINGS

ROOF LAYOUT DRAWINGS

OSHA ACCESS STRUCTURE REPORT

APPENDIX ‘B’: SHELL ROUNDNESS AND PLUMBNESS

APPENDIX ‘C’: API 653 CHECKLISTS FOR TANK INSPECTIONS

APPENDIX ‘D’: PHOTOGRAPHS

ACRONYMS AND ABBREVIATIONS

API American Petroleum Institute

AFFF Aqueous Film Forming Foam

ASME American Society of Mechanical Engineers

ASNT American Society of Non-Destructive Testing

ATG Automatic Tank Gauge

BBL Barrel

CC Carbon Steel

CFR Code of Federal Regulations

CP Cathodic Protection

CS Carbon Steel

DFT Dry Film Thickness

FAC Facility

HLA High Level Alarm

HLCS High Level Control Shutoff

HHLA High-High Level Alarm

LLA Low Level Alarm

LLLA Low-Low Level Alarm

MFL Magnetic Flux Leakage

MT Magnetic Particle Testing

NA Not Applicable

NACE National Association of Corrosion Engineers

NDT Non-Destructive Testing

NFPA National Fire Protection Association

PSI Pounds per Square Inch

PT Penetrant Testing

PTFE Polytetrafluoroethylene (e.g., TEFLON)

P/V Pressure/Vacuum

PST Product Saver Tank

SS Stainless Steel

TRV Thermal Relief Valve

UFC Unified Facilities Criteria

UFGS Unified Facilities Guide Specifications

UT Ultrasonic Testing

WDO Water Draw-off

GENERAL SUMMARY

Austin Brockenbrough & Associates, LLC (Brockenbrough) was retained by Omaha District USACE under Contract No. W9128F-17-D-0017 Delivery Order W9128F20F0261 to perform SPCC Mandated AST Inspections at various locations. As required by this task, Brockenbrough executed a tank inspection site visit to McGuire Air Force Base located on Joint Base McGuire-Dix-Lakehurst, New Jersey. An API 653 In-service (visual external) Inspection was conducted for Facility No. 19-21, on 6 November 2020. This inspection was performed in accordance with API Standard 653, “Tank Inspection, Repair, Alteration, and Reconstruction,” and the referenced contract. The inspection included a tank foundation settlement evaluation and UT inspection of the shell and roof. All observations made during this in-service (visual external) inspection were made from the exterior of the tank. In addition, the shell was evaluated for roundness and plumbness.

Facility 19-21 is a 93-foot diameter by 51-foot 3-inch tall, single wall, vertical, field-erected tank with a nominal storage capacity of 55,000 barrels of Jet A (F-24). The tank erector’s nameplate indicates the tank was erected by Whitherup Fabrication & Erection, Inc. in accordance with API 653 in 2003. A repair nameplate indicates installation of the 6-inch water probe nozzle and other miscellaneous repairs were completed in 2011. Details of tank construction and appurtenances are included in the Tank Information Table at the end of this Section.

This tank was found to be in generally good condition, fully serviceable, no mandatory repairs noted, and suitable for continued service. Additional noted deficiencies are discussed in more detail in Section ‘C’ and should be addressed in a timely manner. Photographs of the tank are included in Appendix ‘D’.

New Jersey aboveground storage tank regulations require in-service and out-of-service inspections to be performed at intervals in accordance with API 653. The next API In-service (external) inspection of Tank Facility 19-21 should be performed by November 2025. Ultrasonic thickness inspection of the shell should be performed by November 2035. The next API 653 Out-of-service (internal) Inspection should be performed by November 2030. The inspection should also include an examination of the tank bottom by magnetic flux leakage (MFL or MFE) technology and a thorough code compliance evaluation.

INSPECTION DATE

API 653 In-Service (External) Inspection Date: 6 November 2020

Equipment Used:

Shell Roundness and Settlement Surveys Manufacturer: Topcon Model Number: QS X-Trac 8 Robotic/Reflectorless Total Station Calibration Method: ___________________________________

Shell Roundness Survey Manufacturer: Topcon Model Number: FC-5000 Field Data Collector Calibration Method: None needed

Shell Settlement Survey Manufacturer: Topcon Model Number: FC-2500 Field Data Collector Calibration Method: None needed

Shell Ultrasonic Thickness Inspection

Manufacturer: NDT Systems Model Number: Nova TG110-DL with 560P (Thru-paint) Probe Calibration Method: Yearly Shop Calibration and Field Calibration (step block) NDT Technician (s): Mike O’Connor

Inspector(s): Mike O’Connor

STATE REGULATIONS

State Regulation for API In-Service Tank Inspections November 2025 State Regulation for API Out-of-Service Tank Inspections June 2050

PREVIOUS INSPECTION DATES

API Out-of-Service (Internal) Inspection Date: October 2010 API In-Service (External) Inspection Date: June 2015

RECOMMENDED FUTURE INSPECTION DATES

API Out-of-Service (Internal) Inspection Date: December 2030 API Ultrasonic Thickness Inspection of Shell Date: December 2035 API In-Service (External) Inspection Date: December 2025

Mike O’Connor Mechanical Designer Austin Brockenbrough & Associates API 653 Inspector No. 6230

GENERAL TANK INFORMATION

ITEM DESCRIPTION

Owner U.S. Air Force Location Joint Base McGuire-Dix-Lakehurst Facility Number 19-21 Tank Number Tank 4 State / Country New Jersey / U.S.A.

City Wrightstown Inspection Date 6 November 2020 Tank Manufacturer Whitherup Fabrication and Erection, Inc.

Design Standard API 650 – 10th Edition (per nameplate) Date of Construction 2003 (per nameplate) Tank Contents Jet A (F-24) Tank Serial Number 09093 Tank Diameter 93’-0” Shell Height 51’-3” Overflow Height 45’-8” Tank Capacity 55,000 BBL nominal (per nameplate), 50,000 BBL (LLA to HLA).

Foundation 12” tall concrete ring wall.

Construction and Material Bottom

Lap-welded 5/16” thick CS plate, cone down, with 1/2” thick center plate (per shop drawings and 2010 inspection report).

Shell Six courses butt-welded carbon steel plate.

Floating Roof Petrex aluminum internal floating pan.

Fixed Roof Lap welded steel cone roof.

Cathodic Protection Impressed Current.

Interior Coating System Epoxy 100% (replaced in 2011)

Exterior Coating System Epoxy/epoxy/polyurethane (assumed).

Level Gauging Enraf ATG and water probe, manual gauging well through ladder access hatch, Varec autogauge (mechanical tape level gauge).

Overfill Protection Independent high and high-high level alarms, ATG (redundant) alarms, hydraulic operated high level control valve.

Piping

Receipt 8” welded carbon steel Issue 12” welded carbon steel Low Suction NA NA Water Draw-off 3/4” welded stainless steel

Level Alarms Shell mounted (independent) high, high-high, and low level alarms; ATG (redundant) alarms.

Type of Internal Floating Roof Petrex aluminum honeycomb.

A. GENERAL PROJECT INFORMATION

1. API 653 Inspection

This project will perform API 653 and STI SP001 inspections of various tanks at facilities throughout the United States. The specific inspection performed is based on available information on the tank type, product being stored, and recommendations from previous inspection reports (if available). Additional consideration is given to federal, state, and local regulations, as well as applicable military criteria and general industry standards.

For this Task Order, Brockenbrough performed Inspection of Facility 19-21 located at McGuire Air Force Base, on Joint Base McGuire-Dix-Lakehurst, New Jersey. For the Tank Facility 19-21, an API 653 In-service (external) Tank Inspection was performed on November 6, 2020. The inspection included a shell settlement survey, a shell roundness and plumbness survey, and a shell UT inspection.

2. Site Information

Joint Base McGuire-Dix-Lakehurst (JB MDL) is located 18 miles (29 km) southeast of Trenton, New Jersey and is situated in the counties of Burlington and Ocean, and includes portions of eight municipalities: the borough of Wrightstown and the townships of New Hanover, North Hanover, Pemberton, and Springfield, in Burlington County, and the townships of Jackson, Manchester, and Plumsted in Ocean County. The 42,000-contiguous acres of JB MDL are home to more than 80 mission partners and 40 mission commanders providing a wide range of combat capability. Spanning more than 20 miles, from east to west, the facility is an amalgamation of the United States Air Force's McGuire Air Force Base, the United States Army's Fort Dix and the United States Navy's Naval Air Engineering Station Lakehurst, which were merged on 1 October 2009 in accordance with congressional legislation implementing the recommendations of the 2005 Base Realignment and Closure Commission.

The 87th Air Base Wing provides installation management support for 3,933 facilities with an approximate value of $9.3 billion in physical infrastructure. JB MDL is the only tri-service base in the United States Department of Defense and includes units from all five armed forces branches. More than 44,000 airmen, soldiers, sailors, marines, Coast Guardsmen, civilians, and their family members live and work on and around the Base.

3. Previous Inspection and Repairs An API 653 Out-of-service inspection was performed in October 2010. A repair nameplate indicates the water probe well was installed in 2011. The water probe was installed in the then-new well and the Enraf ATG was installed in the existing ATG well between 2011 and the June 2015 in-service inspection.

A stencil on the exterior of the shell indicates the internal coatings were repaired or replaced in 2011 on AFCESA Project SCOT-11-D-3325.

4. Future Projects Facility personnel report there are currently no projects scheduled for execution in the future that affect the operation of the tank.

https://en.wikipedia.org/wiki/Trenton,_New_Jersey https://en.wikipedia.org/wiki/Trenton,_New_Jersey https://en.wikipedia.org/wiki/List_of_counties_in_New_Jersey https://en.wikipedia.org/wiki/Burlington_County,_New_Jersey https://en.wikipedia.org/wiki/Ocean_County,_New_Jersey https://en.wikipedia.org/wiki/Wrightstown,_New_Jersey https://en.wikipedia.org/wiki/New_Hanover_Township,_New_Jersey https://en.wikipedia.org/wiki/North_Hanover_Township,_New_Jersey https://en.wikipedia.org/wiki/North_Hanover_Township,_New_Jersey https://en.wikipedia.org/wiki/Pemberton_Township,_New_Jersey https://en.wikipedia.org/wiki/Springfield_Township,_Burlington_County,_New_Jersey https://en.wikipedia.org/wiki/Jackson_Township,_New_Jersey https://en.wikipedia.org/wiki/Manchester_Township,_New_Jersey https://en.wikipedia.org/wiki/Plumsted_Township,_New_Jersey https://en.wikipedia.org/wiki/United_States_Air_Force https://en.wikipedia.org/wiki/United_States_Air_Force https://en.wikipedia.org/wiki/McGuire_Air_Force_Base https://en.wikipedia.org/wiki/United_States_Army https://en.wikipedia.org/wiki/Fort_Dix https://en.wikipedia.org/wiki/United_States_Navy https://en.wikipedia.org/wiki/Naval_Air_Engineering_Station_Lakehurst https://en.wikipedia.org/wiki/Naval_Air_Engineering_Station_Lakehurst https://en.wikipedia.org/wiki/Base_Realignment_and_Closure_Commission https://en.wikipedia.org/wiki/Base_Realignment_and_Closure_Commission https://en.wikipedia.org/wiki/87th_Air_Base_Wing https://en.wikipedia.org/wiki/United_States_Department_of_Defense

B. TANK INSPECTION COMMENTS

1. Tank Construction Tank Facility 19-21 is an aboveground, vertical, storage tank, with a cone roof and aluminum internal floating pan. The tank is 93 feet in diameter and 51 feet 3 inches tall and has a nominal capacity of 55,000 BBLs (per the data plate). The capacity of the tank from the bottom of the shell to the overflow is calculated to be approximately 50,000 BBLs. The capacity of the tank from the low level alarm to the high level alarm is calculated to be approximately 49,400 BBLs. The tank manufacturer’s nameplate indicates the tank was constructed to API 650 - 10th Edition in 2003.

2. Tank Foundation The perimeter of the bottom rests on a 12-inch tall concrete ringwall. The foundation was visually evaluated during the inspection for broken concrete, spalling, cracks, and vegetation against the bottom of the tank. There are approximately 40 feet of radial cracks in the concrete ringwall. The external projection of the bottom is covered with a paraffin impregnated type mastic fabric, which directs rainwater and condensation, running down and off the shell, onto the tank bottom exterior projection, the gap between the tank bottom and the foundation, and under the tank bottom. The mastic fabric also prevents examination of the tank bottom exterior projection and bottom to foundation seal. A shell settlement survey was performed during the inspection in accordance with Appendix ‘B’ of API Standard 653. The shell settlement evaluation indicates the settlement of the bottom of the shell and perimeter of the tank bottom is acceptable.

3. Tank Shell The vertical and cylindrical shell consists of six butt welded courses. The ultrasonic thickness measurements of the shell and calculations included in Appendix ‘A’ indicate the shell has more than 30 years of remaining life. API 653 recommends ultrasonic thickness measurements of the shell be taken at least every 15 years. The exterior of the shell was visually inspected and evaluated for plumbness, roundness, peaking and banding. Little peaking and banding of the butt-welded shell seams were observed. The peaking-and-banding appeared to be within limits allowed by API 650.

There is no definitive criterion for determining tolerance of plumbness for an existing tank in API 653.

API 650, paragraph 7.5.2 allows a maximum out-of-plumb of the top of a new tank shell relative to the tank bottom of 1/200 the height of the shell, a difference of 3 1/16 inches for this 51-foot 3 inch tall tank. The maximum measured out-of-plumbness was approximately 1 1/2 inches toward the tank center measured on the east-northeast side. The out-of-plumbness of the shell is within that allowed by API 650 for a new tank.

There is no definitive criterion for determining tolerance of roundness for an existing tank in API 653.

The shape of the shell appears to exceed the allowable API 650 tolerance of plus or minus 1-inch of a new tank shell radius. Based on the circumference of the shell measured near the bottom, the outside radius of the shell should be 46 feet and 6 inches. However, the measured radii of the shell vary one foot above the bottom from 46 feet 5 5/8 inches in the south-southeast to 46 feet 7 1/2 inches in the north and north-northwest. Also, the measured radii of the shell vary near the top from 46 feet and 4 1/4 inches in the north and south-southeast and south-southwest to 46 feet and 8 3/8 inches in the north-northeast. As the out-of-roundness does not appear to be a detriment to the structural integrity of the tank, no action is required or recommended at this time.

4. Tank Appurtenances

a. Cone Roof

The tank roof is a lap-welded supported cone roof, constructed of 1/4-inch steel plate. There are scattered areas of algae/mold on the exterior of the roof plates and isolated areas of coating failure.

Entry to the internal ladder is gained through a 36-inch round roof hatch. The neck of the round hatch does not provide 30 inches of clearance on the climbing side of the ladder as required by OSHA. The ladder access hatch is too heavy to be lifted safely by one person and does not have a rain lip. There are no scaffold cable supports on the roof. One of the two latches on the roof perimeter vent/inspection hatch adjacent to, and CCW of the stairway landing are inoperable due to misalignment and possibly being full of coating material.

b. Gauging

The tank’s Honeywell Enraf ATG is installed through an 8-inch carbon steel nozzle. The tank also has a Varec autogauge. The inside of the autogauge reading window is covered with condensation.

The tape appears to be attached directly to the floating pan; however, the attachment is less of a problem on such larger floating pans and does not appear to have affected the accuracy of the gauge. There is also a gauge hatch on the roof manhole cover for manual gauging through the internal ladder well.

c. Level Alarms The tank has shell mounted (independent) high, high-high, and low level alarms. The tank also has redundant ATG alarms. The low level alarm is set approximately one foot below the low leg level of the internal floating pan. The facility normally operates with the pan legs set in the high level.

There are no independent alarms at 6 minutes and 1 minute before the pan sets down on low legs as prescribed by the current UFC 3-460-01.

d. Stairs and Platforms The tank’s steel cone roof is accessible by a circumferential stairway mounted on the shell of the tank. The width of the stair steps is generally 32 inches. However, the clearance between the level control float chamber and the platform posts and handrail is only 18 inches. The clearance between the high level alarm sensor chamber and the stairway handrail is only 16 inches. OSHA requires a stairway with a least 22 inches between vertical barriers.

e. Grounding and Bonding The tank’s four ground cables are bolted to the tank in a manner that requires current to pass through a series of three contact points.

5. Tank Coating The tank’s coatings were evaluated for deterioration. The exterior of the shell shows little sign of significant deterioration. However, there is algae and mold on the lower portion of the shell and on large areas of the roof. In addition, there is approximately 40 feet of isolated coating failure and corrosion on the roof. There is also coating failure and corrosion on the interior and exterior of the roof perimeter vent/inspection hatches and on the roof perimeter guardrail. The seven conduit support channel laying on the roof are not seal welded to the roof. There is also an abandoned conduit support channel as well as an abandoned blind flange and abandoned bolting laying on the roof, which promote corrosion.

6. Tank Piping System Facility 19-21 is a bulk storage tank. The adjacent pumphouse receives fuel from a commercial pipeline and issues fuel to the tank via 8-inch underground carbon steel piping and withdraws fuel from the tank via 12-inch underground carbon steel piping. The adjacent pumphouse issues fuel from the tank to the operating and hydrant system tanks via an underground carbon steel pipeline. The low suction is not connected to the main suction. There appears to be adequate thermal relief throughout the piping system. However, the issue piping thermal relief valve is set at 150 psi, which may be higher than necessary. In addition, the thermal relief piping does not include testing tees. There are four carbon steel sight flow indicators and four stainless steel check valves in the carbon steel receipt and issue TRV drain piping. The receipt level control valve is made of aluminum.

7. Fire Protection System There are six fire hydrants in the vicinity.

8. Secondary Containment Secondary containment consists earthen dike berms and basin covered with concrete. The secondary containment basin is sloped north and south of the tank to swales that are approximately 20 feet from the tank. The South swale is approximately only 10 feet from the issue piping. There are approximately 200 feet of unsealed cracks in the concrete covered dike basin and 100 feet in the concrete covered dike berms. There are approximately 1,000 feet of failed expansion joint sealants in the dike basin, mostly in the swale areas. The caulk between the receipt and the issue piping penetration sleeves and the dike basin has failed. The secondary containment is of sufficient size to contain a total tank loss plus an additional 10 inches of freeboard.

C. FINDINGS AND RECOMMENDATIONS

Tank Facility 19-21 was found to be in generally good condition. The tank is fully serviceable, with no mandatory deficiencies that would require immediate removal of the tank from service. However, there were a few minor items observed that could be addressed to reduce long term maintenance, improve operability, and more clearly comply with Federal, State and Local Codes, or by Military Criteria.

1. MANDATORY REPAIRS per API 653, NFPA, or CFRs Mandatory repairs represent items that require immediate attention in order to prevent imminent risk to system operators, equipment, or the adjacent environment. The tank would have to be taken out-of-service to complete these repairs. No Mandatory Repairs are required to be performed.

2. SHORT-TERM RECOMMENDATIONS

REQUIRED REPAIRS to Fully Comply with API 653, UFC 3-460-01, or AW 78-24-27 Standards Short- Term Repairs that directly relate to the long-term preservation of the asset. Short-term repairs represent items that should be addressed in a timely manner in order to prevent future potential risks to system operators, equipment integrity, or the adjacent environment. These items may be required by Federal, State and Local Codes, or by Military Criteria.

a. Provide a Mounting Lug on Shell for Cathodic Protection System OBSERVATION: The impressed current cathodic protection cable is connected to the tank bottom projection/extension. The tank bottom projection/extension is another sacrificial element and much like the CP system is meant to protect extend the life of the tank bottom. When the tank bottom extension experiences corrosion, the impressed current cathodic protected system may no longer be connected to the tank and the tank bottom will no longer be cathodically protected.

REFERENCE: Guidance for the design of new storage tanks, provided in DoD Standard Design AW 78- 24-27 and UFC 3-460-0,1 includes cathodic protection of the underside of the tank bottom with the CP system connected to the tank shell.

RECOMMENDATION: Disconnect the cathodic protection cable from the tank bottom, provide a CP connection lug on the tank shell similar to a grounding lug, and connect the CP cable to the new CP connection lug mounted on the tank shell.

b. Remove Mastic Fabric and Provide a Tank Bottom to Foundation Seal OBSERVATION: The tank bottom extension, the bottom-to-foundation seal, and much of the shell-to-bottom weld are covered with a paraffin-like impregnated mastic fabric and are inaccessible. The mastic is on the wrong side of the tank bottom may drive water under the tank bottom, trap water on top of the tank bottom extension, and promotes accelerated corrosion of the tank bottom extension. The high current to voltage ratio of the CP system indicates there is considerable water under the tank bottom, which could result in early exhaustion of the CP system.

REFERENCE: Guidance for new construction, provided in DoD Standard Design AW 78-24-26 includes a tank bottom-to-foundation mastic seal located between the “underside” of the tank bottom and the foundation. API 653 and UFC 3-460-03 require the tank bottom extension and tank bottom-to-foundation seal to be regularly inspected. UFC 3-460-03 requires the coating on the tank bottom extension and condition of the tank bottom-to-foundation seal to be maintained.

RECOMMENDATION: Demolish the mastic fabric covering the shell-to-bottom weld, the tank bottom extension, and bottom-to-foundation seal. Inspect the shell-to-bottom weld, as well as the tank bottom extension, and bottom-to-foundation seal. Repair the tank bottom and shell to bottom weld as required. Repair the coating on the shell-to-bottom weld and tank bottom extension as required.

Coat the underside of the perimeter of the tank bottom with epoxy and provide a tank bottom-to-foundation seal between the underside of the perimeter of the tank bottom and the foundation. Do not cover the tank bottom extension or tank bottom-to-foundation seal with any substance except as recommended above.

c. Seal Secondary Containment OBSERVATION: There are approximately 200 feet of unsealed cracks in the concrete covered dike basin and 100 feet in the concrete covered dike berms. There are approximately 1,000 feet of failed expansion joint sealants in the dike basin, mostly in the swale areas.

REFERENCE: Guidance for maintenance of fuel storage facilities, provided in UFC 3-460-03 paragraph 8-10.2.2, includes sealing cracks and replacing failed expansion joints.

RECOMMENDATION: Seal approximately 200 feet of unsealed cracks in the concrete covered dike basin and 100 feet in the concrete covered dike berms. Replace approximately 1,000 linear feet of failed expansion joint sealants in the dike basin.

d. Replace the Coatings and Sealants at the Dike Basin Penetrations OBSERVATION: The coatings on the receipt and issue piping penetration sleeves and on the piping under the rubber boots, including at the modular seals have failed. The caulk between the receipt and the issue piping penetration sleeves and the dike basin has also failed.

REFERENCE: NFPA 30 paragraph 22.11.2.4 and 40 CFR 112.7(c)(1) require dikes to be liquid tight.

Guidance for maintenance of fuel storage facilities, provided in UFC 3-460-03 paragraph 8-10.2.2, includes daily inspection of concrete secondary containment for failed sealants.

RECOMMENDATION: Replace the coatings on the receipt and issue piping penetration sleeves and on the piping under the rubber boots, including under the modular seals. After the coating has cured, reinstall the modular seals and seal the dike basin penetrations for the receipt and issue piping penetration sleeves using fuel and UV resistant sealant. Provide new weather resistant boots over the dike basin penetrations.

e. Seal the Foundation OBSERVATION: There are approximately 40 linear feet of radial cracks in the concrete ringwall foundation. The freezing of water in the cracks and the resulting development of pack-rust on the reinforcing steel may further widen the cracks and compromise the integrity of the foundation.

REFERENCE: NFPA 30 paragraph 22.11.2.4 and 40 CFR 112.7(c)(1) require secondary containment to be liquid tight.

RECOMMENDATION: Seal approximately 40 linear feet of cracks in the concrete foundation. Seal coat the foundation (approximately 700 square feet).

Crack in Ringwall

f. Replace Conduit Supports OBSERVATION: There are seven conduit support channels laying on the roof plates that are not seal welded to the roof plates, that trap water between the channel and the roof plate, promote coating failure and corrosion of the roof plates, prevent inspection of the coating under the channels, and prevent repairing the coating under the channel. There is also one abandoned conduit support channel laying on the roof that also is not seal welded to the roof plate.

REFERENCE: Guidance for new construction, provided in UFC 3-460-01, paragraph 8-3.10, includes coating the exterior. Guidance for new construction provided in DoD standard design AW 78-24-27 includes conduit supports that do not trap water against the roof plates.

RECOMMENDATION: Replace the conduit support channels on the roof with conduit supports that comply with the DoD Standard Design AW 78-24-27. Demolish the abandoned conduit support channel on the roof.

g. Repair Exterior Coatings OBSERVATION: There is algae and mold on the lower portion of the shell. There are scattered areas of algae/mold on the roof plates and isolated areas of coating failure and corrosion (approximately 40 sq. ft.) There is coating failure on the interior and exterior of the roof perimeter vent/inspection hatches and on the roof perimeter guardrail.

REFERENCE: Guidance for new construction, provided in UFC 3-460-01, paragraph 8-3.10, includes coating the exterior.

RECOMMENDATION: Pressure wash the exterior of the roof and bottom shell course. Repair the external tank and appurtenance coatings, including coatings on the roof plates, on the interior and exterior of roof perimeter vent/inspection hatches, on the roof perimeter guardrail, and under the roof manhole cover. (2,000 sq ft.)

h. Replace one Roof Perimeter Vent/Inspection Hatch Latch OBSERVATION: One of the two latches on the roof perimeter vent/inspection hatch adjacent to, and CCW of the stairway landing are inoperable due to misalignment. As a result, the hatch could not be opened during the inspection.

REFERENCE: DoD AST Standard Design AW 78-24-2API 653, includes stainless steel roof perimeter vent/inspection hatch latches. Appendix ‘C’ (Checklist for Out-of-service Inspection) item C.1.4.4 includes measuring the level of the internal floating roof (IFR) at several locations to aid in revealing any problems with the IFR. UFC 3-460-03, section 8-9.1.1 requires the facility to occasionally visually inspect the IFR for damage.

RECOMMENDATION: Replace one of the two latches on the roof perimeter vent/inspection hatch adjacent to, and CCW of the stairway landing with a stainless steel latch per DoD AST Standard Design AW 78-24-27.

i. Modify Stairway OBSERVATION: The width of the circumferential stairway stair steps is generally 32 inches.

However, the clearance between the level control float chamber and the platform posts and handrail is only 18 inches. The clearance between the high level alarm sensor chamber and the stairway handrail is only 16 inches.

REFERENCE: OSHA regulation 29 CFR 1910.25 (c) (4) (December 2017) requires clearance at a stairway of at least 22 inches between vertical barriers.

RECOMMENDATION: Reinstall the high and high-high level alarm chambers and the level control chamber or modify the stairway at the level alarms to provide at least 22 inches of horizontal clearance between the alarms/controls and the stairway handrail.

3. LONG-TERM RECOMMENDATIONS

RECOMMENDED REPAIRS as Part of Regular Maintenance Long-term Repairs that directly relate to repair/upgrade of an asset to bring it up to the current standard from the standard at time of construction. Long-term Repairs represent items that should be addressed in a timely manner in order to prevent future potential risks to system operators, equipment integrity, or the adjacent environment.

a. Remove Debris and Pressure Wash Tank Regularly OBSERVATION: There are abandoned blind flanges and bolting on the roof that promote corrosion.

In addition, there are areas of the roof and shell that are covered with mold and algae.

REFERENCE: Guidance for new construction, provided in UFC 3-460-01 paragraph 8-3.10, includes coating the exterior. UFC 3-460-03, Appendix ‘F’ (Monthly Tank Inspection Checklists) requires Facility personnel to inspect for evidence of corrosion.

RECOMMENDATION: Include pressure washing of the tank, and especially the roof, in the periodic maintenance checklist. Remove the abandoned piping flanges, bolting, and other debris from the roof.

b. Unplug Tell-tale Holes OBSERVATION: The tell-tale holes in the reinforcing plates of the shell manholes are plugged with unknown type cement-like hard material.

REFERENCE: API 650 paragraph 5.7.2.10 requires the tell-tale holes be left open to the atmosphere.

RECOMMENDATION: Remove the material from the tell-tale holes in the reinforcing plates of the shell manholes. Pack the tell-tale holes with high temperature grease or install street-elbows turned-down in the tell-tale holes, but leave the holes open to the atmosphere.

c. Service the Autogauge Head OBSERVATION: The autogauge was found to be accurate in-spite of the tape being attached directly to the floating pan contrary to manufacturer’s installation instructions and recommendations. The attachment is generally found to be less of a problem on such larger floating pans and does not appear to have affected the accuracy of the gauge. However, the inside of the autogauge reading window is covered with condensation.

REFERENCE: Although, some branches of the military do not consider an autogauge to be essential equipment, guidance for new construction, provided in UFC 3-460-01, Table 8-1, Item o and DoD Standard Design AW 78-24-27 include an autogauge.

RECOMMENDATION: Remove the condensation from inside the autogauge head, clean the reading window, and replace any leaking autogauge head seals to prevent water vapor from entering the autogauge head.

Autogauge

Autogauge

d. Replace Level Control Valve OBSERVATION: The level control valve is made of aluminum.

REFERENCE: Guidance for construction of fuel system piping provided in UFC 3-460-01 paragraph 15-11.5 includes diaphragm control valves made of stainless steel or internally chrome plated steel or internally nickel plated nodular iron and prohibits aluminum valves. NFPA 30 paragraph 27.4.3 and UFC 3-460-01 paragraph 3-6.7.1 prohibit valves made of aluminum and other low melting point materials.

RECOMMENDATION: Replace the level control valve with a steel or nodular iron level control valve.

If the receipt pipeline is internal coated, ensure the new level control valve is internal coated or internal chromium or nickel plated.

e. Provide Exothermic Grounding Connections OBSERVATION: The tank’s four ground cables are bolted to the tank in a manner that requires current to pass through a series of three contact points.

REFERENCE: Guidance for new construction, provided in DoD Standard Design AW 78-24-27, includes four grounding lugs and cables, and includes exothermic welding the grounding cables to stainless-steel grounding lugs per Detail 2/ED.02.

RECOMMENDATION: Replace the four grounding studs with four stainless steel grounding lugs per Detail 2/ED.02, and exothermic weld the grounding cables to stainless-steel grounding lugs.

f. Provide Low Suction Piping OBSERVATION: The low suction is not hard piped to the main suction. Preparing the tank for cleaning requires the facility to use portable pumps or trucks to remove the last few thousand gallons of fuel from the tank.

REFERENCE: Guidance for new construction, provided in UFC 3-460-01, Table 8-1, item v) and DoD Standard Design AW 78-24-27, includes hard piping to connect the low suction to the main suction to allow removing all but a few gallons of fuel from the tank in preparation for cleaning.

RECOMMENDATION: Provide piping and connections to connect the low suction to the main suction.

g. Modify the Roof Support Structure OBSERVATION: Photographs included in the previous inspection report show only 8 primary roof rafters with an additional 8 intermediate rafters located near the perimeter of the roof between the primary rafters. The primary and intermediate rafters are spaced approximately 22 1/2 degrees apart (18 feet 3 inches apart at the perimeter of the roof). The tank’s steel, lap welded, cone roof shows sign of water ponding around the perimeter and is covered with mold and algae likely due to inadequate drainage.

REFERENCE: As early as 1996, API 650 required rafter spacing at the perimeter of the tank roof to be no greater than 75 inches apart. Earlier API requirements may have been more stringent. Later editions of API 650, paragraph 5.10.4.4 increased the maximum allowable spacing to 84 inches.

RECOMMENDATION: Modify the roof support structure to eliminate the water ponding and bring the roof rafter spacing into compliance with API 650.

This photo is from the 2010 internal inspection.

h. Provide OSHA Compliant Internal Ladder Access Hatch OBSERVATION: The 36-inch internal ladder access manhole provides approximately only 26 inches of clearance on the climbing side of the ladder and in addition does not have a rain lip to prevent rainwater from entering the tank. The cover is made of thick carbon steel and is too heavy to be safely lifted unassisted by a person of normal strength.

REFERENCE: OSHA regulation 29 CFR 1910.23 (d) (June 2018) requires 30 inches of clearance (24 inches with a deflector plate) on the climbing side of a ladder including at access hatches. Guidance for new construction, provided in DoD design Standard AW 78-24-27, includes an OSHA compliant internal ladder access hatch with a rain lip.

RECOMMENDATION: Replace the internal ladder access manhole with an OSHA compliant internal ladder access hatch with a rain lip.

i. Relocate Overflow OBSERVATION: One of the two shell overflows located near to over the product receipt.

REFERENCE: API 650 paragraph H.5.3.3 does not allow overflows to be located over tank nozzle isolation valves. DoD Standard Design AW 78-24-27 shows six overflows on 50,000 BBL and 80,000 BBL tanks on the side of the tank opposite the product nozzles and the stairway.

RECOMMENDATION: Eliminate the existing shell overflow currently located near to over the receipt isolation valve and provide a new overflow, per DoD Standard Design AW 78-24-27, on the side of the tank opposite the product nozzles and the stairway.

Overflow

Receipt

Receipt

Overflow

j. Modify Thermal Relief Piping OBSERVATION: The receipt and issue thermal relief valves are carbon steel, are all set at 150 psi (range:101-200), and do not have testing tees. In addition, there are four carbon steel sight flow indicators and four stainless steel check valves on the receipt and issue thermal relief drain piping.

The check valves serve no purpose at this location as thermal relief valves are also check valves.

REFERENCE: DoD Standard Design AW 78-24-27 includes stainless steel thermal relief piping and valves at storage tanks but does not include additional or redundant check valves. Guidance for new construction, provided in UFC 3-460-01 paragraph 9-3.5.1 recommends a TRV set pressure of 10 percent above pump deadhead, and prohibits installing sight flow indicators on new thermal relief piping. Guidance for new construction, provided in UFC 3-460-01 paragraph 2-11.3.3, prohibits bonding of dissimilar metals. While specific wording in the UFC prohibiting sight flow indicators on TRV drains is not found, they are not included DoD Standard design AW 78-24-27.

RECOMMENDATION: Replace the receipt and issue thermal relief piping and valves in accordance with UFC 3-460-01 and DoD Standard Design AW 78-24-27. Remove the sight flow indicators.

k. Provide Scaffold Cable Supports OBSERVATION: There are no scaffold cable supports on the fixed roof.

REFERENCE: Guidance for the design of new storage tanks, provided in UFC 3-460-01, Table 8-1, Item ff, and DoD Standard Design AW 78-24-27, includes scaffold cable supports on the fixed roof.

RECOMMENDATION: If the industry develops means for a coating contractor to make use of scaffold cable supports on a tank with guardrails all around the perimeter of its roof, the next time interior tank coating work is performed, provide two scaffold cable supports on the fixed roof.

CS

SS

CS SFI

l. Upgrade Water Draw-off System OBSERVATION: The 3/4-inch carbon steel WDO nozzle is fitted with a stainless steel ball valve.

The piping to the product saver tank (PST) is stainless steel. There is no dedicate product return nozzle. There is no electrical isolation between the SS-PST piping and the tank. The PST does not have a dedicated ground.

REFERENCE: Guidance provided in DoD Standard Design AW 78-24-27 and UFC 3-460-01 includes a dedicated 2-inch CS WDO and product return nozzles fitted with CS double block and bleed (DBB) valves, electrical isolation between the SS PST piping and the CS tank nozzle valves, and a dedicated grounding system for the PST.

RECOMMENDATION: Provide 2-inch flanged CS-WDO and return nozzles on the tank shell. Provide flanged, CS, DBB valves on the new WDO and return nozzles and electrical isolation between the SS PST piping and the CS-DBB tank nozzle valves. Pipe the product saver tank to the new water draw-off and return nozzles and provide a dedicated grounding system for the PST.

Water Draw-off

m. Modify Secondary Containment OBSERVATION: The secondary containment basin swales north and south of the tank are approximately 20 feet from the tank. The south swale is approximately 10 feet from the issue piping.

REFERENCE: NFPA 30 requires secondary containment to be sloped away from the tank for 50 feet or to the dike wall, whichever is less, and away from product piping for a distance of 50 feet.

RECOMMENDATION: Modify the secondary containment basin to slope way from the tank and the product piping for at least 50 feet.

Issue Piping

Issue Piping

Swale

Swale Drain

Dike Drain

Issue Piping

APPENDIX ‘A’: ENGINEERING CALCULATIONS AND DRAWINGS

SHELL SETTLEMENT SURVEY

Austin Brockenbrough & Associates, L.L.P. Job No. 20-056.03 Location: McGuire AFB Date: 12/8/2020 Subject: Tank FAC 19-21 - Shell Settlement Evaluation By: Mike O'Connor

API 653 Appendix B Optimum cosine curve, B 2.2.4.e) Z = a + b x cos(theta + c)

Diameter (D) = 93 (ft) Number of equally spaced data points (ft)= 10 L = Arc length between measurement points (ft) = 29.22 Tank Height (H) = 51.3 (ft)

Relative elevation of bottom of shell (ft).

* Z U S

0 99.97 0.00 0.00 0.00 0.01 1 99.98 0.01 0.00 -0.01 -0.01 2 99.97 0.00 0.01 0.01 0.01 3 99.99 0.02 0.02 0.00 -0.01 4 99.99 0.02 0.02 0.00 0.01 5 100.00 0.03 0.03 0.00 -0.01 6 99.99 0.02 0.02 0.00 0.01 7 100.00 0.03 0.02 -0.01 -0.02 8 99.98 0.01 0.01 0.00 0.01 9 99.98 0.01 0.00 -0.01 -0.01

10 99.97 0.00 0.00 0.00 0.00 Maximum out-of-plane deflection = 0.02

* = measured elevation *HI (Height of Instrument) Z = calculated ridged body tilt (in) U = out-of-plane settlement = S = out-of-plane deflection z-y Y = yield sterength of shell material (PSI) = 36,000 (A36) E = Youngs modulas of elasticity (lbf/in2) = 29*10^6 S allowable (in) (API 653 B.3.2.1) = (L^2*Y*11)/(2EH)*12 = 0.11 ft

R^2 = (Syy - SSE) / Syy = 0.77 not >=0.9 therefore cosine curve is invalid.

Evaluation by the Arc Length Method described in API 653 B.2.2.5.1 is required.

Austin Brockenbrough & Associates, L.L.P. Job No. 20-056.03 Location: McGuire AFB Date: 12/8/2020 Subject: Tank FAC 19-21 - Shell Settlement Evaluation By: Mike O'Connor

API 653 B.2.2.5.1 Evaluation by Settlement Arc Length Method

* Open top (yes/no) = no Per B.3.2.2, K = 3.9

Settlement arc length (ft), Sarc Out of plate settlement at Point i (Si) Allowable settlement at point i (Smax) = MIN[K*Sarc*(D/H)*(Y/E), 4]

Point Sarc (ft) Si (ft) Smax (ft)

0 58.4 0.01 0.04 OK

2 58.4 0.02 0.04 OK

4 58.4 0.01 0.04 OK

6 58.4 0.01 0.04 OK

8 58.4 0.01 0.04 OK

* For the purpose of this evaluation tanks with geodesic domes and barn roofs are consided to be open top, as those types of roofs do not significantly restrain shell deformation.

Evaluation of the settlement by the arc length method indicates the settlement is within acceptable limits.

Si < Smax → Si < Smax → Si < Smax → Si < Smax → Si < Smax →

0.00

0.01

0.02

0.03

0.04

0 2 4 6 8 10 12

Measured Elevation (in)

Si6

Si0 Si2

Si4 Si8

SHELL THICKNESS CALCULATIONS

Job No.: 20-056.03

Job Title: Inspect AST McGuire AFB

Subject: FAC 19-21 Shell Calculations

By: Mike O'Connor Date: 12/7/20

API-650

API 653

SHELL CALCULATIONS

Diameter 93 feet Shell Height 51.25 feet Freeboard 5.6 feet Design Fill Heigh 45.67 feet Specific Gravity 0.84 API 650

0.84 API 653

Joint Efficiency 1.00 API 650 Material A-36 Yield Strength 36,000 psi Tensile Strength 58,000 psi Original Design Corrosion Allowance

0.063 in (2mm) Required thickness

Lower Upper Two

Allowable Stress CoursesCourses 24882 27376

Height Product Required Thickness Course (feet) Depth 1/4" min

6 8.75 3.17

5 8.50 11.67

4 8.50 20.17

3 8.50 28.67

2 8.50 37.17

1 8.50 45.67 min 2020 Corrosion Estimated UTM Visual current net 2003 Rate ** Service Life Inspection Inspection

Course UTM* thick Thickness * in/yr yrs. Interval** Interval** 6 0.315 0.315 0.357 0.002 >30 15 5

5 0.391 0.391 0.406 0.001 >30 15 5

4 0.387 0.387 0.389 0.000 >30 15 5

3 0.391 0.391 0.393 0.000 >30 15 5

2 0.497 0.497 0.497 0.000 >30 15 5

1 0.558 0.558 0.566 0.000 >30 15 5

* The original thicknesses are based on nameplate data, the range of the UTMs, and the apparent overtolerance.

** The actual corrosion rate of a coated shell is zero. Abrasive blasting in paraparation for coating contributs to any apparent thinning.

1011 Boulder Springs Drive Richmond, Virginia 23225 Phone: 804-592-3900 Fax: 804-395-3901 www.brockenbrough.com

(psi)

0.365

API-653

0.100

0.142

0.205

0.295

2.6(H-1)DG

SE

0.100

API-650

2.6(H-1)DG 2.6(H-1)D

Original Hydro

0.454

0.104

0.186

0.269

0.352

0.434

0.156

0.230

0.305

0.379

0.081 0.021

Original Design

SESE

23200 24857

SHELL AND ROOF UT MEASUREMENTS

Job No.: 20-056.03

Job Title: Inspect AST McGuire AFB

Subject: FAC 19-21 Shell UTMs

By: Mike O'Connor Date: 12/7/20

SHELL UTM DATA (0.001 inches) DFT = 0.000 inches UTM's include 0 inch DFT coating.

1 2 3 4 5 6 7 8 9 Typical Shell Plate UTMs.

1 2 3 4 5 6 7 8 9 1-1 565 562 561 568 564 565 566 593 561 1-2 563 567 568 565 565 570 593 564 568 1-3 562 562 563 565 563 563 563 598 564 1-4 560 561 561 564 596 561 562 560 561 1-5 563 564 562 564 566 564 598 565 563 1-6 563 561 562 563 561 561 560 558 561 1-7 562 563 562 563 563 565 565 562 563

Insert-1 564 564 563 565 566 567 565 563 565 1-8 562 562 566 563 563 567 564 562 599 1-9 561 565 561 562 567 562 561 565 592

1-10 564 564 565 595 565 565 563 562 565 lower shell course Shell plate 1-1 is the lower shell course plate having the receipt nozzle.

Shell plates are numbered counter clockwise.

Insert1 is a door sheet in shell plate 1-7.

2nd shell course at stairway 498

4 5 6 4 5 6 3rd shell course at stairway 4th shell course at stairway

398 387

391 390

390 391

4 5 6 4 5 6 5th shell course at stairway 6th shell course at stairway

437 315

391 364

391 391

Roof

NE-SW 244 248 280 246 280 278 245 270 275 280 277 249

281 243 247

NW- SE 245 243 246 246 245 245 286 245 244 244 244 241

243 242

1011 Boulder Springs Drive Richmond, Virginia 23225 Phone: 804-592-3900 Fax: 804-395-3901 www.brockenbrough.com

SHELL LAYOUT DRAWINGS

TANK 19-21 SHELL LAYOUT

MCG-19-21

ROOF LAYOUT DRAWINGS

TANK 19-21 ROOF LAYOUT

OSHA ACCESS STRUCTURE REPORT

OSHA Circumferential Stairway Data

OSHA Rq’d Actual

(in) min (in) max (in)

Handrail Height 32 OK 30 34 Step Width 32 OK 22 NA

Step Rise 8 1/4 OK NA 9 1/2 Upper Concrete

Step Rise

9 OK 7 1/4 9 1/4

Bottom Step Rise 8 3/4 OK 7 1/4 9 1/4

BOTTOM STEP

RISE

APPENDIX ‘B’: SHELL ROUNDNESS AND PLUMBNESS

20-056.03 Date: 11/18/20

Measured Circumference at Bottom = 292.17 Calculated Diameter = 93.00

Calculated Radius = 46.50

Distance Height From Radial Radial Above Out

Centerline Deviation Deviation Bottom of

(ft) (ft) (in) (ft) Plumb (in)

NORTH 46.58 0.08 0.97 50.9 N+S 0.11 -0.58

46.65 0.15 1.75 47.9 1.39

46.65 0.15 1.85 44.9 1.37

46.63 0.13 1.51 41.9 0.48

46.64 0.14 1.64 38.9 0.74

46.64 0.14 1.69 35.9 1.49

46.61 0.11 1.31 33.0 0.53

46.62 0.12 1.43 30.0 0.82

46.62 0.12 1.49 27.0 0.98

46.65 0.15 1.79 24.0 1.43

46.66 0.16 1.93 21.0 1.56

46.67 0.17 1.98 18.0 1.51

46.67 0.17 1.98 15.0 1.61

46.68 0.18 2.18 12.0 2.14

46.66 0.16 1.91 9.0 1.49

46.70 0.20 2.35 6.0 2.28

46.71 0.21 2.54 3.0 2.39

46.63 0.13 1.55 0.2 1.44

CHIME 99.98

NNE 46.70 0.20 2.40 50.9 NNE+SSW 0.67 0.91

46.71 0.21 2.48 47.9 1.26

46.72 0.22 2.60 44.9 1.29

46.70 0.20 2.36 41.9 1.03

46.70 0.20 2.44 38.9 1.47

46.69 0.19 2.24 35.9 1.35

46.67 0.17 2.02 33.0 0.95

46.71 0.21 2.50 30.0 1.98

46.69 0.19 2.32 27.0 1.70

46.68 0.18 2.21 24.0 1.60

46.70 0.20 2.45 21.0 2.18

46.67 0.17 2.10 18.0 1.61

46.66 0.16 1.89 15.0 1.59

46.69 0.19 2.32 12.0 2.13

46.70 0.20 2.42 9.0 2.05

46.70 0.20 2.45 6.0 2.57

46.66 0.16 1.93 3.0 2.21

46.62 0.12 1.49 0.2 1.32

CHIME 99.97

Austin Brockenbrough & Associates, L.L.C.

Diameter Deviation (in)

Location: McGuire AFB Subject: Tank 19-21 Shell Roundness and Settlement Survey

20-056.02

Distance Height From Radial Above Out

Centerline Deviation Deviation Bottom of

(ft) (ft) (in) (ft) Plumb (in)

ENE 46.48 -0.02 -0.30 51.0 ENE+WSW 0.70 -1.45

46.56 0.06 0.68 48.0 0.68

46.54 0.04 0.49 45.0 0.53

46.57 0.07 0.79 42.0 0.72

46.59 0.09 1.09 39.0 1.49

46.58 0.08 0.95 36.0 1.24

46.57 0.07 0.85 33.0 0.71

46.59 0.09 1.02 30.0 1.55

46.58 0.08 1.00 27.0 1.42

46.61 0.11 1.29 24.0 1.77

46.60 0.10 1.17 21.0 1.91

46.61 0.11 1.34 18.0 1.60

46.57 0.07 0.87 15.0 1.54

46.60 0.10 1.19 12.0 2.02

46.59 0.09 1.12 9.0 2.06

46.59 0.09 1.12 6.0 2.16

46.62 0.12 1.42 3.0 2.51

46.60 0.10 1.15 0.2 1.82

CHIME 99.98

ESE 46.46 -0.04 -0.46 51.0 ESE+WNW 0.02 -0.49

46.53 0.03 0.41 48.0 0.98

46.49 -0.01 -0.10 45.0 0.51

46.53 0.03 0.32 42.0 0.89

46.56 0.06 0.77 39.0 1.46

46.53 0.03 0.32 36.0 0.84

46.51 0.01 0.15 33.0 0.43

46.54 0.04 0.51 30.0 1.22

46.58 0.08 0.93 27.0 1.78

46.60 0.10 1.18 24.0 2.13

46.59 0.09 1.03 21.0 2.05

46.58 0.08 0.97 18.0 2.02

46.56 0.06 0.74 15.0 2.02

46.57 0.07 0.85 12.0 2.33

46.57 0.07 0.80 9.0 2.22

46.57 0.07 0.84 6.0 2.64

46.56 0.06 0.73 3.0 2.64

46.50 0.00 0.03 0.2 1.38

CHIME 99.97

Location: McGuire AFB Austin Brockenbrough & Associates, L.L.C.

Diameter Deviation (in)

Distance Height From Radial Above Out

Centerline Deviation Deviation Bottom of

(ft) (ft) (in) (ft) Plumb (in)

SSE 46.36 -0.14 -1.68 51.1 SSE+NNW -0.78 -0.45

46.43 -0.07 -0.81 48.0 0.42

46.42 -0.08 -1.01 45.0 -0.08

46.39 -0.11 -1.37 42.0 -0.47

46.40 -0.10 -1.18 39.0 0.03

46.41 -0.09 -1.09 36.0 0.09

46.41 -0.09 -1.03 33.0 -0.17

46.44 -0.06 -0.77 30.0 0.69

46.44 -0.06 -0.74 27.0 1.08

46.42 -0.08 -1.01 23.7 0.74

46.42 -0.08 -0.98 21.0 0.74

46.44 -0.06 -0.75 18.0 0.81

46.45 -0.05 -0.66 15.0 1.05

46.46 -0.04 -0.46 12.0 1.49

46.45 -0.05 -0.61 9.0 1.22

46.47 -0.03 -0.40 6.0 1.65

46.47 -0.03 -0.33 3.0 1.80

46.47 -0.03 -0.36 0.3 1.20

CHIME 99.99

SOUTH 46.41 -0.09 -1.08 51.1 -0.25

46.47 -0.03 -0.36 48.0

46.46 -0.04 -0.48 45.0

46.41 -0.09 -1.03 42.0

46.43 -0.07 -0.90 39.0

46.48 -0.02 -0.20 36.0

46.44 -0.06 -0.78 33.0

46.45 -0.05 -0.61 30.0

46.46 -0.04 -0.50 27.0

46.47 -0.03 -0.36 24.0

46.47 -0.03 -0.37 21.0

46.46 -0.04 -0.47 18.0

46.47 -0.03 -0.37 15.0

46.50 0.00 -0.05 12.0

46.47 -0.03 -0.42 9.0

46.49 -0.01 -0.07 6.0

46.49 -0.01 -0.15 3.1

46.49 -0.01 -0.11 0.2

CHIME 99.99

Diameter Deviation (in)

Location: McGuire AFB Austin Brockenbrough & Associates, L.L.C.

Distance Height…