JBLE-Langley AF TCF - NTCRA ESS Construction Support (20181115) DRAFT.pdf

Explosive Safety Submission

MUNITIONS AND EXPLOSIVES OF CONCERN

CONSTRUCTION SUPPORT

LANGLEY AIR FORCE BASE (AFB) TARGETING CENTER

FACILITY (TCF) CONSTRUTION FOOTPRINT

Langley AFB Hampton Virginia

OCTOBER 2018

Prepared by

BALTIMORE DISTRICT

U.S. ARMY CORPS OF ENGINEERS

i

TABLE OF CONTENTS

Section Page

1. BACKGROUND

2. MAPS

3. EXPLOSIVES SAFETY QUANTITY-DISTANCE (Q-D)

4. START DATE

5. MEC MIGRATION

6. DETECTION EQUIPMENT AND RESPONSE TECHNIQUES

7. DISPOSITION TECHNIQUES

8. ENVIRONMENTAL, ECOLOGICAL OR CULTURAL

CONSIDERATIONS

9. TECHNICAL SUPPORT

10. RESIDUAL RISK MANAGEMENT

11. UXO SAFETY EDUCATION PROGRAM

12. STAKEHOLDER INVOLVEMENT

13. CONTINGENCIES

APPENDICES

APPENDIX A MAPS

APPENDIX B FRAGMENTATION DATA SHEETS/MSD

1. BACKGROUND

This Non Time Critical Removal Action (NTCRA) Construction Support ESS is in support of the Munitions and Explosives of Concern (MEC) removal action in the area identified for soil disturbance during the construction of the Langley AFB Targeting Center Facility (TCF). The Construction footprint is approximately 12 acres in size and is located adjacent to a former range where numerous MEC items have been recovered. In consideration of the construction site’s location proximate to a former range it was deemed prudent to prepare a NTCRA Construction Support ESS and remove all MEC in the areas designated for soil removal and/or soil disturbance activities. The purpose of this ESS is to support NTCRA MEC removal to depth of detection.

1.1 SITE LOCATION

The Air Force Targeting Center Facility will be constructed at Langley Air Force Base, Hampton, Virginia. The proposed construction site is located due south of the intersection of Worley Road and Weyland Road, and east of the 497th ISR Group building, located in the parking area off Sperry Court. Langley Air Force Base (AFB) is located near Hampton, Virginia, which is part of the Norfolk metropolitan area, as shown in Figure 1 (Appendix A). The base, which covers 3,152 acres, was established in 1917 and has the distinction of being the oldest continuously active AFB in the United States. The base is situated between the northwest and southwest branches of the Back River, a tidal estuary of Chesapeake Bay.

The Air Force Targeting Center Facility construction site including parking area consists of approximately 12 contiguous acres.

Table 1-1 Site Covered by this ESS

Site Name Total Acreage

Munitions Removal Action Institutional Controls

LAFB TCF 12 Removal of MEC to depth of detection.

Langley AFB MEC Awareness Program and excavation permit requirements.

1.2 SITE DESCRIPTION

1.2.1 Terrain and Vegetation

There is no evidence to suggest that the terrain, will hinder MEC removal actions. Geology and soil conditions will not interfere with the use of magnetometers in this area. Site is regularly mowed and maintained. There is no vegetation on the sites which would hinder MEC removal actions.

1.3 SITE HISTORY

Langley AFB property was primarily used for agriculture prior to 1916, when it was purchased by the U.S. Government for use as an aviation research and development establishment. Langley AFB was first known as the "Aviation Experimental Station and Proving Ground." In 1917, the base was officially named "Langley Field," in honor of Samuel Pierpoot Langley (1834-1906), a former secretary of the Smithsonian Institute and a pioneer in American aviation. The new air field played a minor role in the American war effort during World War I and became increasingly active in the years prior to World War II. In the 1920s, the base was used for experiments that tested the new concept of air power, including "lighter than air" machines. At the outbreak of World War II the base became the focal point for antisubmarine operations. In 1946, the Tactical Air Command (TAC) established its headquarters at Langley Field. In 1948, Langley Field was renamed Langley AFB. Langley AFB served as home to a number of Military Aircraft Command (MAC) units from 1965 to 1975, but in 1976 it returned to its former use as a fighter base. The host organization is currently the 1st Fighter Wing.

1.4 CURRENT AND FUTURE LAND USE

The current land use at Langley AFB is military with numerous office buildings, roads, parking lots and underground utilities in the area. The anticipated future use of the area will remain the same as current use after construction.

1.5 PROJECT AREA

1.5.1 General

A description of the LAFB TCF site covered by this Explosive Safety Submission (ESS) is provided in Subsection 1.1 and in Table 1-1. This ESS covers the munitions response action for the TCF construction footprint and includes MEC removal to depth of detection. The close proximity of a former impact area to the construction site prompted the development of this ESS.

2. MAPS

Maps are provided in Appendix A. Figure 1 shows the TCF site in relation to the surrounding area; Figure 2 shows the TCF site location. Figure 3 presents the quantity-distance (Q-D) arcs (hazardous fragment distance [HFD], engineering controls, and maximum fragment [MFD]) that will be used during the MEC removal action.

3. EXPLOSIVES SAFETY QUANTITY-DISTANCE (Q-D)

3.1 MUNITION WITH GREATEST FRAGMENTATION DISTANCE

Based on the munitions recovered during previous MEC removal actions adjacent to the TCF site, the munition with greatest fragmentation distance (MGFD) is the 25 lb. Mark III (Cooper) Fragmentation Bomb. The Q-D arcs for the HFD (unintentional detonation), MFD-H (intentional detonation without engineering controls), and the MSD for intentional detonations using engineering controls that will be used during the MEC removal action are presented in Figure 3 of Appendix A. The MSDs for the site based on the MGFD are presented in Table 3-1. If MEC with a greater fragmentation distance is encountered, the MSD will be adjusted in accordance with Fragmentation Data Base, operations will continue, and an amendment to this ESS will be promptly submitted for approval (a copy of this document will be available on-site). Q-D arcs will be adjusted accordingly.

Table 3-1 Minimum Separation Distances

Site Name MGFD

MSD (ft)1

Unintentional Detonations Intentional Detonations

Team Separatio n Distance

(TSD)

Hazardous Fragment Distance

(HFD)

Without Engineering Controls

Using Sandbag Mitigation

LAFB TCF

Construction Site

25 lb. Frag Bomb (TNT)

71 287 1838 220

Note: 1.This item may use single sandbag mitigation during intentional detonations.

3.2 MEC OPERATIONS

The MSDs for personnel are listed in Table 3-1. Any occupied buildings or public roadways in the MSD area during MEC operations will be evacuated and/or roadways blocked to prevent non-essential personnel from entering during the performance of MEC operations. In the event non-essential personnel enter the MSD, MEC operations will immediately halt until the MSD can be cleared. Close coordination will be maintained with Langley AFB airfield operations and flight tower. Aircraft will be directed to maintain a minimum altitude of 1,600 feet during MEC operations and to clear the air space during intentional detonations. Operations will be halted when any aircraft is observed entering or in the exclusion area. Operations will not continue until the aircraft has departed the airspace. Airfield operations will be notified and airspace will be verified clear prior to intentional detonation operations. All disposal operations will be conducted using engineering controls as identified in paragraph 7.3.

3.3 DEMOLITION EXPLOSIVES

The contractor will not store donor explosives on site. Donor explosives will be delivered on an as needed basis.

3.3.1 Explosive Storage Magazine

No Explosive Storage Magazines will be used.

3.4 PLANNED OR ESTABLISHED DEMOLITION AREAS

There are no planned or established demolition areas.

3.5 FOOTPRINT AREAS

3.5.1 Blow-in-Place (BIP)

If BIP operations are required engineering controls will be used. The MSD using engineering controls for expected MEC is presented in Table 3-1.

3.5.2 Collection Points

Collection points are those areas within the MRS which may be used to temporarily accumulate MEC which are determined acceptable to move by the Senior UXO Supervisor (SUXOS) and UXO Safety Officer (UXOSO) pending destruction. MEC items at collection points must be laid out as shown in “Procedures for Demolition of Multiple Rounds (Consolidated Shots) on Ordnance and Explosives (OE) Sites, August 1998 (terminology update March 2000).” The maximum net explosive weight (NEW) at a collection point will be limited such that the K40 overpressure distance for the total NEW does not exceed the HFD for the area. Consolidating multiple MEC is anticipated for this project.

3.5.3 In-Grid Consolidated Shots

Consolidated shots for multiple MEC items determined “acceptable to move” by the SUXOS and UXOSO within the MRS may be used for this project IAW US Army Engineering and Support Center, Huntsville (USAESCH) publication “Procedures for Demolition of Multiple Rounds (Consolidated Shots) on Ordnance and Explosives (OE) Sites”, dated March 2000. A copy of this report will be available on site. The maximum net explosive weight (NEW) for a consolidated shot will be limited such that the K328 overpressure distance for the total NEW (including donor charges) does not exceed the MSD for the intentional detonation.

3.6 MAXIMUM CREDIBLE EVENT

No explosive contaminated soil is expected for the areas addressed by this submission.

Therefore, no maximum credible event is calculated.

4. START DATE

The anticipated start date of this removal action is June 2019.

5. MEC MIGRATION

MEC migration is not deemed feasible due to the 100% removal of MEC and subsequent construction of the TCF.

6. DETECTION EQUIPMENT AND RESPONSE TECHNIQUES

6.1 REMOVAL DEPTH

The planned removal action is identified in Table 1-1 and Subsection 1.1. The purpose of this ESS is to conduct NTCRA MEC removal to the depth of detection

Detection Equipment: The expected MEC at the LAFB TCF site are medium bomblets that are made of ferrous casings that are easily detectable by a variety of geophysical instruments. A combination of one or more of the following geophysical instruments will be used at the site.

6.1.1 Analog Mag and Flag Using Flux-Gate Magnetic Gradiometers

Approved instruments for this project include the Schonstedt and/or Subsurface families of magnetometers. These instruments have similar detection characteristics and can be expected to consistently detect the potential MEC items at two to three feet in depth.

6.2 SWEEP PROCEDURES

The personnel operating detection equipment will demonstrate proficiency with the particular instrument(s) used before site investigations begin. During site operations, they will concurrently conduct a surface and subsurface investigation in each grid. The site will be divided into grids for administrative purposes. Search lanes will be used that are suitable for the equipment and terrain, but will not exceed five feet.

6.3 EXCLUSION ZONE CONTROL

Prior to initiation of on-site MEC operations, all nonessential personnel will be removed to a location outside the MSD for the operation being conducted. Once MEC operation commences, positive control of the MSD will be maintained and only essential personnel will be allowed inside the MSD. During MEC operations, non-essential personnel will be prevented from entering the MSD by a combination of road guards and the use of spotters who will notify the UXO Team to stop work when a vehicle or person approaches the MSD boundary. Close coordination will be maintained with the Langley AFB aircraft operations and flight tower during MEC operations. In the event that an aircraft enters airspace proximate to the MEC operation, intrusive operations will halt until airspace is cleared. Intentional detonations will be coordinated with airfield operations and the tower.

6.4 INTRUSIVE INVESTIGATION

Only qualified UXO personnel and UXO Technician I under supervision of UXO-qualified personnel will perform excavation and investigation of anomalies. To gain access to a subsurface anomaly, hand excavation will be initiated to the side of the anomaly and will not be conducted directly until the depth of the anomaly can be ascertained.

Upon conclusion of the removal activities in each grid, the UXO Quality Control Specialist (UXOQCS) will conduct a surface and subsurface quality control (QC) inspection. Areas that pass the QC inspection will be submitted for quality assurance (QA) inspection by the United States Army Corps of Engineers. Any non-conformance to contractual requirements will be documented and reported in writing to the SUXOS and Project Manager. The SUXOS will be responsible for the field remediation of the non-conformance.

7. DISPOSITION TECHNIQUES

7.1 DEMOLITION OPERATIONS

All explosive operations will be conducted by contractor personnel. The contractor will not maintain any explosives on site. Explosives will be delivered to the project location on an “As needed” basis and will be guarded by the contractor until use. The Senior UXO Supervisor (SUXOS) and UXO Safety Officer (UXOSO) are authorized to determine that movement of certain items is acceptable for the purpose of efficiency of activity being conducted and protection of personnel, property, or critical assets.

All recovered MEC and material presenting an explosive hazard (MPPEH) identified as material documented as an explosive hazard (MEDH) will be destroyed on the same day found. In the event this cannot occur due to weather or delay in explosive delivery, items will be guarded until disposal.

7.2 EXPLOSIVE STORAGE, ACCOUNTABILITY, AND TRANSPORTATION

No explosives will be stored or transported on site by the contractor.

7.3 ENGINEERING CONTROLS

Sandbag mitigation may be used as engineering control to reduce the intentional detonation MSD. These controls will be used IAW HNC-ED-CS-98-7, HNC-ED-CS-S-00-3, HNC safety advisory dated 07 November 2011, and DDESB memo dated 29 November 2010 (Clarification regarding use of sandbags for mitigation of fragmentation and blast effects due to intentional detonation of munitions). This EC may be applied to mitigate fragmentation and blast hazards to the MSD identified in table 7-1 and will only be used with shape charge as a donor charge. A copy of HNC-ED-CS-98-7 will be available on site if this EC is applied. Tamping (single or multiple items) may be used in accordance with DDESB TP 16 and the latest version of the

Buried Explosion Module (BEM) as issued by DDESB. These documents will be available on site for mitigation methods used.

7.4 MPPEH PROCEDURES

7.4.1 Inspection and Certification

Material potentially presenting an explosive hazard (MPPEH) procedures will be in accordance with DoDI 4140.62 and EM 385-1-97. All MMPEH will be assessed and its explosive safety status determined and documented prior to transfer within Department of Defense (DoD) or release from DoD control. Prior to release to the public, MPPEH will be documented by authorized and technically qualified personnel as Material Documented as Safe (MDAS) after 100% inspection and an independent 100% re-inspection to determine that it is safe from an explosives safety perspective.

7.5 ALTERNATIVE DISPOSAL TECHNIQUES

No alternative disposal techniques are anticipated for this action.

8. ENVIRONMENTAL, ECOLOGICAL OR CULTURAL

CONSIDERATIONS

No environmental, ecological or cultural considerations have been identified or are anticipated at the site.

9. TECHNICAL SUPPORT

9.1 MILITARY SUPPORT

No chemical warfare materiel (CWM) is suspected at this site. However, if a munition with an unknown filler is found, or if a MEC item cannot be positively identified, the on-site USACE project team will notify the local point of contact (POC) as designated in the work plan. The local POC will contact and facilitate EOD response.

9.2 CONTRACTOR

All on-site Contractor UXO personnel will meet the training and minimum experience required by DDESB Technical Paper 18, Minimum Qualifications for Personnel Conducting Munitions and Explosives of Concern-Related Activities.

10. RESIDUAL RISK MANAGEMENT

10.1 LAND USE CONTROLS

Upon completion of this removal action, there are no land use controls anticipated for the TCF site.

10.2 LONG-TERM MANAGEMENT

It is anticipated that the TCF site will continue to be used for military/industrial activities. Long- Term management of the TCF site is not anticipated to be a requirement.

11. UXO SAFETY EDUCATION PROGRAM

The LAFB safety office is responsible for the UXO safety education of personnel conducting activities on the installation.

12. STAKEHOLDER INVOLVEMENT

a. Langley Air Force Base

b. US Army Corps of Engineers, Norfolk District (USACE)

13. CONTINGENCIES

During the course of the removal action if MEC with a greater fragmentation distance is encountered, the MSD will be adjusted in accordance with the Fragmentation Data Review Form. Q-D arcs will be adjusted accordingly and an amendment to this safety submission submitted for approval.

APPENDIX A

MAPS

Langley AF Target Facility Langley, VA

EMDC, Baltimore District US Army Corps of Engineers

Figure 1 Regional Map

Legend MRS Location

Langley

MRS

EMDC, Baltimore District US Army Corps of Engineers

Figure 2 MRS Map

Legend

MRS Boundary

EMDC, Baltimore District US Army Corps of Engineers

Figure 3 Exclusion Area Map

Legend MRS Boundary

MFD 1838ft HFD 287ft EC 220ft

APPENDIX B

FRAGMENTATION DATA SHEETS/MSD

Munition Information and Fragmentation Characteristics

Theoretical Calculated Fragment Distances

Minimum Thickness to Prevent Perforation (in)

Overpressure Distances

Sandbag and Water Mitigation Options

Fragmentation Data Review Form

Category: Air-Launched HE Rounds

Munition: 25 lb Mk III (Cooper) Frag Bomb (TNT filled)

Case Material: Steel, Mild

Secondary Database Category: Bomb

Munition Case Classification: Robust

DODIC:

Individual Last Updated Record:

Explosive Type: TNT

Explosive Weight (lb): 5.5

Diameter (in): 5.1250

Maximum Fragment Weight (Intentional) (lb):

0.1260

Critical Fragment Velocity (fps): 5975

HFD [Hazardous Fragment Distance: distance to no more than 1 hazardous fragment per 600 square feet] (ft):

MFD-V [Maximum Fragment Distance, Vertical] (ft): 1453

MFD-H [Maximum Fragment Distance, Horizontal] (ft): 1838

1.2 psi, K40 Distance (ft): 71

3.5 psi, K18 Distance (ft): 32

0.0655 psi, K328 Distance (ft): 579

4000 psi Concrete (Prevent Spall): 11.35

Mild Steel: 2.07

Hard Steel: 1.70

Aluminum: 4.15

LEXAN: 8.73

Plexi-glass: 7.19

Bullet Resist Glass: 6.28

Kinetic Energy 10⁶ (lb-ft²/s²): 2.2495

Required Wall & Roof Thickness (in) 36

Expected Max. Throw Distance (ft): 220

Minimum Separation Distance (ft): 220

Water Containment System: 1100 gal tank

Minimum Separation Distance (ft): 275

Date Record Created: 5/31/2011

Last Date Record Updated:

Date Record Retired:

Database Revision Date 5/3/2018

Intentional Unintentional

Design Fragment Weight (95%) (Unintentional) (lb):

0.0244

5.77

2.25

1.08

0.89

5.85

3.48

4.22

Distribution Statement D. Distribution authorized to the Department of Defense and U.S. DoD contractors only for Administrative- Operational Use (3 May 2018). Other requests shall be referred to the Department of Defense Explosives Safety Board, 4800 Mark

Center Drive, Suite 16E12, Alexandria, VA 22350.

Fragmentation Method: Naturally Fragmenting

Record Created By: SDH

2.3 psi; K24 Distance (ft): 42

TNT Equivalent (Pressure): 1

TNT Equivalent Weight - Pressure (lbs): 5.500

Item Notes

This item can be found in British and US versions. The British version is filled with either 4 lbs of 80/20 Amatol or 4.6 lbs of 40/60 Amatol.

The US version is filled with 5.5 lbs of TNT. This item is the US version.

TNT Equivalent (Impulse): 1

TNT Equivalent Weight - Impulse (lbs): 5.500

Cylindrical Case Weight (lb): 10.13402

Required Wall & Roof Thickness (in) Not Permitted

Expected Max. Throw Distance (ft): Not Permitted

Minimum Separation Distance (ft): Not Permitted

Single Sandbag Mitigation

Double Sandbag Mitigation

"NOTE: Values shown within this section only address overpressure hazards and do not account for applicable distance values for fragments and debris as required per DoD 6055.09-M."

Water Mitigation

Note: Use Sandbag and Water Mitigation in accordance with all applicable documents and guidance. If a donor charge larger than 32 grams is utilized, the above mitigation options are no longer applicable. Subject matter experts may be contacted to develop site specific mitigation options.

3.6 Maximum Credible Event

7.5 Alternative Disposal Techniques