Appendix B - HEDG AAR Fall 2022 with Appendix A_E.Final .pdf

Day & Zimmermann Lone Star, LLC and U. S. Army BRAC Office

LONE STAR AAP HEDG

SURFACE CLEARANCE AFTER

ACTION REPORT - FALL 2022

December 2022

Peggy Llewellyn, PE Project Manager

Joseph Saveall

UXOQCS

Patrick Saveall SUXOS

LONE STAR AAP HEDG

SURFACE

CLEARANCE AFTER

ACTION REPORT

Prepared for:

Ms. Wendy Satterfield

Environmental Supervisor

Day & Zimmermann Lone Star, LLC

Highway 82 West

Texarkana, TX 75505

And

Mr. Webster (Hank) Procter

U.S. Army BRAC

Washington, DC

Prepared by:

Matrix U.S., Inc.

Texas 76102

Our Ref.:

Date:

December 30, 2022

This document is intended only for the use of the individual or entity for which it was prepared and may contain information that is privileged, confidential and exempt from disclosure under applicable law. Any dissemination, distribution or copying of this document is strictly prohibited.

LONE STAR AAP HEDG SURFACE CLEARANCE AFTER ACTION REPORT

Matrix.com i

Contents TABLES ..............................................................................................................................................................iv

FIGURES ............................................................................................................................................................iv

APPENDICES ..................................................................................................................................................... v

1.0 INTRODUCTION

1.1 Project Authorization

1.1 HEDG Surface Clearance Scope

1.2 RCRA Permit Compliance

1.3 Surface Clearance Summary

1.4 After Action Report Organization

2.0 SITE BACKGROUND

2.1 Project Location

2.1 LSAAP History

2.2 General Site Description

2.3 Site Climate

2.4 Guidance, Regulations, and Policy

3.0 SUBMITTALS AND PROJECT MANAGMENT

3.1 Pre-Work Submittals

3.2 Management Roles and Responsibilities and Changes

3.3 Progress Reporting

4.0 SURFACE CLEARANCE ACTIONS

4.1 Scope of Munitions Response Activities

4.1 Project Site and Specific Area of Work

4.2 Site Control During MEC Operations

4.3 Mobilization

4.4 Site Facilities Set-Up

4.5 Site Specific Training and Orientation of Field Personnel

4.6 Equipment

4.7 Surface Clearance

ii

4.8 MEC, MPPEH and MDEH Demolition

4.9 MDAS and Metal Disposal

4.10 Recordkeeping

4.11 Site Restoration

4.12 Demobilization

4.13 After Action Report

4.14 Potential Recovered Chemical Warfare Material

5.0 QUALITY CONTROL

5.1 QC Inspections

5.1 MEC, MPPEH, and MDAS Inspections

5.2 Other QC Inspections

5.3 Corrective Action Request

5.4 Lessons Learned

6.0 CONCLUSION

7.0 REFERENCES

APPENDIX A

APPENDIX B

APPENDIX C

APPENDIX D

APPENDIX E

TABLES

Table 3-2. Minimum Separation Distances for MEC/MPPEH Clearance

FIGURES

Figure 1-1. Site Location (included in Appendix B)

Figure 3-1. Quantity Distance Arcs for Most Probable Munition (included in Appendix B)

Figure 4-1. Progress Map (included in Appendix B)

Figure 5-1. Explosive Storage Magazine Quantity Distance Arcs (included in Appendix B) iii

APPENDICES

Appendix A Task Order Scope of Work

Appendix B Site Figures

Appendix C Progress Reports

Appendix D Quality Control Reports

Appendix E MEC Destruction Certification Reports iv

LONE STAR AAP HEDG SURFACE CLEARANCE AFTER ACTION REPORT

ACRONYMS AND ABBREVIATIONS

AAR

AHAs

APP

BATFE

BEC

BIP

CAP

CAR

CBRNE

CEHNC

CFR

COR

CPR

CWM

DA

DARAD

DDESB

DIDs

DoDM

DOT

DZLS

EOD

ESQD

EZ

FCRs

GOCO

After Action Report

Activity Hazard Analysis

Accident Prevention Plan

Bureau of Alcohol, Tabaco, Firearms and Explosives

BRAC Environmental Coordinator blow in place

Corrective Action Plan

Corrective Action Request

Chemical, Biological, Radiological, Nuclear and High Yield Explosives

Corps of Engineers, Huntsville Center

Code of Federal Regulations

Contracting Officer Representative

Cardio-Pulmonary Resuscitation

Chemical Warfare Materiel

Department of Army

Deviation Approval and Risk Acceptance Document

Department of Defense Explosives Safety Board

Data Item Descriptions

DoD Manual

Department of Transportation

Day & Zimmermann Lone Star explosive ordnance disposal explosives safety quantity- distance exclusion zone field change requests government owned/contractor operated

HAZWOPER Hazardous Waste Operations and Emergency Response

HE high explosives

HEDG High Explosives Demolition Ground

IAW in accordance with

ISO Industry Standard Object

ITS instrument test strip vii

LONE STAR AAP HEDG SURFACE CLEARANCE AFTER ACTION REPORT

LAP load, assemble and pack

LSAAP Lone Star Army Ammunition Plant

MD Munitions Debris

MDAS Material Documented as Safe

MDEH Material Documented as an Explosive Hazard

MEC Munitions and Explosives of Concern

MMRP Military Munitions Response Program

MPPEH Material Potentially Presenting an Explosive Hazard

MSD minimum separation distance

MSDS Material Safety Data Sheets

NAVSCOLEOD Naval School, Explosive Ordnance Disposal

NOD Notice of Deficiency

OSHA Occupational Safety and Health Administration

PAM Pamphlet

PM Project Manager

POC point of contact

PPE personnel protective equipment

PWS Performance Work Statement

QAP Quality Assurance Plan

QA Quality Acceptance

QC Quality Control

QCM Quality Control Manager

QCP Quality Control Plan

RCRA Resource Conservation and Recovery Act

RCWM Recovered Chemical Warfare Materiel

SOPs Standard Operating Procedures

SUXOS Senior Unexploded Ordnance Supervisor

SSFR Site Specific Final Report

SSHP Site Safety and Health Plan

SWPPP Storm Water Pollution Prevention Plan

SZs Support Zones

TAC TexAmericas Center

TCEQ Texas Commission on Environmental Quality

TP Technical Paper

TPWD Texas Parks and Wildlife viii

LONE STAR AAP HEDG SURFACE CLEARANCE AFTER ACTION REPORT

TRRP Texas Risk Reduction Program

UTM Universal Transverse Mercator

UXO Unexploded Ordnance

UXODS Unexploded Ordnance Demolition Supervisor

UXOQCS Unexploded Ordnance Quality Control Specialist

UXOSO Unexploded Ordnance Safety Officer

WP Work Plan

Matrix com

June 2020 AAR.docx

1.0 INTRODUCTION

1.1 Project Authorization

Matrix Environmental Services (Matrix) was tasked by Day & Zimmermann Lone Star (DZLS), LLC to perform Munitions surface clearance at the High Explosives Demolition Ground (HEDG) (the site) on the former Lone Star Army Ammunition Plant (LSAAP) (Figure 1-1). Specifically, the task was to remove and dispose of Munitions and Explosives of Concern (MEC), Material Potentially Presenting an Explosive Hazard (MPPEH), Munitions Debris (MD) and metal from 377 specific 100-foot by 100-foot grids at the HEDG. This After-Action Report (AAR) documenting the surface clearance activities has been prepared for the U.S. Army via contract with DZLS.

1.2 HEDG Surface Clearance Scope

The scope of this project was to perform removal and disposal of all MEC and MPPEH, MD and metal greater than 2-inches by 2-inches in size 377 HEDG 100-foot by 100-foot using visual techniques.

Additionally, Matrix was tasked to conduct a Test Assessment with various Net Explosive Weight. This AAF describes how work was performed using the best available technology, applied by trained and qualified personnel using established visual surface clearance.

1.3 RCRA Permit Compliance

Operations at LSAAP are regulated under a Resource Conservation and Recovery Act (RCRA) Hazardous Waste Permit No. 50292 (the Permit). The HEDG is identified in the RCRA permit as Unit 18. The Army has complied with High Explosives Demolition Ground Engineering Report of June 2013 of the RCRA permit and performed a visual search for unexploded material after each series of detonations.

The last series of detonations occurred in 2010. The Army’s intent is to ultimately seek closure of the HEDG property under the Texas Commission on Environmental Quality (TCEQ) Texas Risk Reduction Program (TRRP) and transfer the property to TexAmericas Center (TAC).

Surface clearance activities to be performed under this AAR were performed in accordance with the requirements of the Permit.

1.4 Surface Clearance Summary Fall 2022

During the Fall 2022 Surface Clearance Event of the entire HEDG and surrounding access road was performed using visual surface clearance techniques. In accordance with the PWS, surface clearance for MEC, MPPEH, and MD was conducted between October 3, 2022, and December 15, 2022. Matrix removed and destroyed 3,591 MEC items from the 377 grids. Additionally, Matrix removed, inspected, December 2022 AAR.docx demilitarized, and recycled 35,984 pounds of MPPEH, MD and metal items larger than 2-inches by 2-inches was removed from the 377 grids of which 31,080 pounds (less dirt) was recycled at Tri-Stat. Matrix demobilized from the site on December 15, 2022, for the Fall 2022 Surface Clearance Event.

1.5 After Action Report Organization

The AAR consists of the following sections:

Section 1: Introduction

Section 2: Site Background

Section 3: Submittals

Section 4: Surface Clearance Activities

Section 5: Quality Control (QC) Program

Section 6: Conclusions

Section 7: References

The AAR also lists the following appendices:

Appendix A –Scope of Work

Appendix B – Site Figures

Appendix C – Progress Reports

Appendix D – Quality Control/Quality Assurance Documentation

Appendix E –Certification of Destruction

2.0 SITE BACKGROUND

2.1 Project Location

LSAAP is located in northeastern Texas; approximately 12 miles west of Texarkana, Texas, in central Bowie County (see Figure B-1 of Appendix B). The facility is south of Interstate 30 and between Highways 82 West and 67. Nearby communities include Leary and Hooks to the north and Redwater and Maud to the south. The terrain is level to gently rolling with elevations varying from 200 to 450 feet above mean sea level. Most of the soils are either loamy or clayey. The average elevation at LSAAP is 356 feet above mean sea level. The HEDG is located in the southeast portion of LSAAP.

2.2 LSAAP History

LSAAP was constructed during World War II and the Lone Star Defense Corporation, a subsidiary of the

B.F. Goodrich Company, Akron, Ohio placed the plant into active production immediately following completion of initial construction. Goodrich operated the plant during World War II and for several months following the end of the war in conjunction with closeout procedures. Lone Star Ordnance Plant was incorporated with Red River Ordnance Depot, in November 1945 and a few months later the name of the installation was changed to Red River Arsenal. In the early part of 1950, Lone Star was selected for reactivation and Day and Zimmermann, Inc. (DZI) was selected as the architect and operating engineer.

In November 1951, the plant was designated Lone Star Ordnance Plant, a Class II industrial activity under the jurisdiction of the Chief of Ordnance. On July 1, 1963, the plant was re-designated LSAAP.

Ammunition production activities began to decline in 1969 and the installation was recommended for closure in 2005. DZI continues selected ammunition operations at LSAAP.

LSAAP was a government owned/contractor operated (GOCO) facility that has produced a variety of military munitions. LSAAP occupied over 15,000 acres of land on which the various functions necessary to load, assemble and pack (LAP) ammunition items for the Army were performed and maintained. The plant contained an administration area, 13 production lines, seven (7) storage areas, maintenance shops, a railroad classification yard, a sewage treatment plant, demolition areas, a high explosive (HE) burning ground, a munitions test area, landfills (active and closed) and a fire-fighting pumping station.

2.3 General Site Description

The HEDG consists of approximately 76 acres cleared site (including access road and sedimentation basin) located in the southeastern portion of the LSAAP. The HEDG had been in continuous use beginning operations in 1945 through 2010 when the most recent operations were performed. Out-of- date ammunitions, scrap explosives and explosive contaminated materials have been treated through demolition (i.e., thermal treatment) at the HEDG. Material to be thermally treated was placed in holes 10 to 12-feet wide by 12 to 20-feet long and 9 to 10-feet deep. Holes were backfilled to ground level after placement of material to be treated and initiating explosives set. Spacing between demolition holes was a

December 2022 AAR.docx minimum of 100 feet with a minimum of 300 feet from the hole to the HEDG boundary. The Permit limits maximum amount of reactive material allowed to be thermally treated to 1,350 pounds net explosive weight (NEW) per hour or 5,400 pounds per day (including donor charges). DZLS placed an additional operational limit of 150 pounds NEW per hole for demolition. Surface area of the HEDG was visually searched for unexploded material after each set of detonations. Items potentially containing explosives were placed in new holes for destruction, items free of explosives were recycled.

2.4 Site Climate

The site lies at approximately 33°26’35.72” north latitude and 94°08’25.23” west longitude at an average elevation of 356 feet. The site has hot humid summers and cold damp winters with a maximum yearly mean temperature of 93°F in July and a minimum yearly mean temperature of 31°F in January. The yearly average mean temperature is approximately 72°F. Precipitation averages 51 inches per year; November is normally the wettest month in the year.

2.5 Guidance, Regulations, and Policy

Work was performed within the relevant requirements presented in Occupational Safety and Health Administration (OSHA) Hazardous Waste Operations and Emergency Response (HAZWOPER) standards found in the 29 Code of Federal Regulations (CFR) parts 1926, 1910, and 1904, and the reference documents contained in Section 10.0 of this WP. All site work was performed IAW the approved WP, the approved Deviation Approval and Risk Acceptance Document (DARAD) and all applicable Federal, State and DoD/DA rules and regulations.

3.0 SUBMITTALS AND PROJECT MANAGMENT

3.1 Pre-Work Submittals

3.1.1 HEDG Surface Clearance Work Plan (WP)

The preliminary draft Lone Star AAP HEDG Surface Clearance Work Plan (WP) was submitted to DZLS on September 30, 2021. Matrix received comments on the WP from DZLS and Matrix submitted the draft document to DZLS on October 4, 2020. The draft WP was submitted to the Army by DZLS for review and comment. Army comments were received between October 4th through 14th, 2021, a comment resolution conference call was held on October 14, 2021, to discuss and address Army comments, the document was finalized and submitted to the DZLS and Army on October 21, 2021.

3.1.2 HEDG Explosive Siting Plan (ESP)

Minor updates to HEDG Explosive Siting Plan were made regarding key personnel and reporting, these changes were submitted with the Work Plan discussed above.

3.1.3 HEDG Health and Safety Plan (HSP)

Minor changes to HEDG Explosive Siting Plan were made regarding key personnel and reporting, these changes were submitted with the Work Plan discussed above.

3.1.4 HEDG Deviation Approval and Risk Acceptance Document (DARAD) The Deviation Approval and Risk Acceptance Document (DARAD) was initiated by Matrix project manager Peggy Llewellyn, PE on March 11, 2021, and submitted to DZLS on March 11, 2021, and routed to the appropriate Army personnel for review and approval. The document was signed by Director of Installation Services, Deputy Chief of Staff (DCS) Michael E. Reheuser - DCS, G-9 on March 13, 2021, and this DARAD is effective through March 13, 2026.

3.2 Management Roles and Responsibilities and Changes

In addition to Matrix, the project team includes Mr. Jerry Galloway. DZLS Operations Director; Ms.

Wendy Satterfield, DZLS Environmental Supervisor is the DZLS project manager for this project; Mr.

Hank Procter BRAC Project Manager, Mr. Billy Lawson BRAC Environmental Coordinator (BEC); Mr.

Mark Haughs, Explosive Safety, Mr. Richard Striker replaced Mr. Joe Pearson as BEC when Mr. Pearson retired, and Ms. Rachel Fernandez (COR). Qualifications Certification Letters of UXO personnel assigned to this project were provided to the DZLS project manager and Army QA.

3.2.1 Matrix Project Manager

Ms. Peggy Llewellyn, PE has overall responsibility for all project objectives being met. Ms. Llewellyn has over 30 years of experience managing military contracts and 20 years of experience on military munition projects, Ms. Llewellyn leads efforts to recruit and retain personnel and procure equipment and materials needed for site operations and implementation of the project. Ms. Llewellyn served as program manager throughout the program.

3.2.2 Senior UXO Supervisor

Mr. Patrick Saveall with 30 years of miliary EOD and civilian UXO experience was assigned and has served as the Senior UXO Supervisor and Site Manager for the Lone Star Program through the entire program.

Mr. Charles Overstreet with over 25 years of military EOD and civilian UXO experience and served as our Demolition Supervisor and served as Senior UXO Supervisor when Mr. Patrick Saveall was temporarily unavailable and/or offsite. Both Mr. Patrick Saveall and Mr. Overstreet are TP-18 qualified SUXOS with military EOD and civilian UXO experience and has served as SUXOS for Matrix on various projects over the past ten years.

3.2.3 UXO Quality Control Specialist/UXO Safety Officer (UXOQC)/(UXOSO)

Mr. Joseph Saveall is the UXOQC/SO for the project. Program Manager, Peggy Llewellyn, notified DZLS and Army of the personnel change. Mr. Joseph Saveall is a TP-18 qualified UXOQC with over 15 years of civilian UXO experience and has a 5-year certification under the US Army Corps of Engineers for Construction Quality Management.

3.2.4 Team Leaders

Mr. Charlie Overstreet served as Demolition Team leader throughout the course of the program, Mr.

Overstreet has 25 years of military EOD and Civilian UXO experience and has worked with Matrix at multiple locations at Lone Star, Guam, and Fort McClellan. Mr. Casey Perry served as the Sweep Team Leader through the Fall/Winter and Spring Quarters. Mr. Jacob Black has over 10 years of civilian UXO experience and has worked during all five surface clearance efforts Matrix performed.

3.3 Communications and Reporting

Peggy Llewellyn, Matrix PM, interacted with the DZLS and the COR for all matters concerning this project and the scope of work. All contract-related issues were reported directly to DZLS for consideration and/or approval. The SUXOS reported directly to Ms. Llewellyn for all matters concerning site operations. Ms.

Llewellyn reports to Mr. Thompson, the Corporate Officer. Regarding safety issues, the UXOSO has direct access to and reported functionally to Mr. Thompson. For matters concerning QC, the UXOQCS has direct access to and reported functionally to Mr. Thompson, Environmental Quality Manager and/or his designee. The UXOSO and UXOQCS report administratively to the SUXOS. The Team Leaders (UXOTIII) report directly to the SUXOS, and the team members (UXOTII or UXOTI) report directly to their respective UXOTIII.

3.3 Progress Reporting

3.3.1 Daily Reports

Daily Reports (Appendix D) were prepared by the SUXOS, UXOQC, UXOSO and Demolition Team Leader, reviewed by the PM and submitted to DZLS and the Army during field work no later than 10:00 am the following day.

3.3.2 Weekly Reports

The status reports were prepared by the PM and documented the project field activities, including schedule, personnel on-site, MEC, MPPEH, MD, metal found on a weekly basis. The weekly status reports were provided to Ms. Satterfield, DZLS, on the following Tuesday of each week. These reports are presented in Appendix D.

3.3.3 Monthly Reports

Monthly status reports were submitted within 3 business days after the month. These reports included a summary of the activities performed during the month, as well as financial information regarding the project.

3.3.4 After Action Report

This AAR documents project activities including surface clearance procedures, quantities of MEC, MPPEH, MD, and metal recovered, and disposition of recovered items was prepared and submitted to DZLS and the Army. The AAR includes figures and maps containing survey data, including any new control point data, site grid data, and MEC location data to DZLS and Army upon completion of the surface clearance task. All maps were developed in accordance with DID WERS-007.01 and was compatible with the most current version of Arc GIS. This draft report has been submitted within 3 days following the completion of field activities, and the final version was submitted within 30 calendar days after receipt of all comments on the draft report. The final AAR will address comments received on the draft AAR. The Final AAR will be submitted to DZLS and appropriate Army stakeholders.

LONE STAR AAP HEDG SURFACE CLEARANCE AFTER ACTION REPORT

4.0 SURFACE CLEARANCE ACTIONS

4.1 Scope of Munitions Response Activities

The scope of this project was to perform a surface clearance for MEC, MPPEH, MD and metal debris within specified grids within the HEDG to remove all unembedded MEC and surface metal larger than 2-inches by 2-inches. Unembedded for the purposes of this project indicates metal visible on the surface of the ground but partially buried and removable with hand tools.

The following project elements was performed to accomplish the surface clearance:

• Mobilization

• Set-up of site facilities

• Site specific training and orientation of field personnel

• Equipment

• Surface clearance

• MEC, MPPEH and MDEH demolition

• MDAS and metal disposal

• Recordkeeping

• Site restoration

• Demobilization

• After Action Report

4.2 Project Site and Specific Area of Work

The HEDG, also known as Unit 18 in the LSAAP RCRA Subpart X permit, is in the southeastern portion of the LSAAP and is comprised of a RCRA permitted treatment area of approximately 76-acre circular area surrounded by an earthen berm. The HEDG was used for disposal of obsolete and out-of- specification munitions and ordnance from LSAAP processes through demolition. The HEDG was continuously operated from 1945 until 2010 at which time the Army ceased generating waste requiring treatment at the unit. The HEDG is currently inactive and there are no plans to operate the unit in the future. A sedimentation basin, approximately 7 acres in size, is located along the southwestern edge of the unit as part of the storm water management system and outside of the surface clearance area.

The project area also includes the access road along the perimeter of the HEDG. The area has been divided into 377 grids with a maximum dimension of approximately 100 feet by 100 feet (including the perimeter road).

4.3 Site Control During MEC Operations

Once MEC operations commence in an area, only essential personnel as defined in USACE EM 385-1- 97, Change 1, involved in the on-site activities were permitted into the minimum separation distance

(MSD).

Prior to field mobilization, a coordination meeting was held with DZLS and the Army to plan turnover of the HEDG area to the Matrix surface clearance team. Project personnel ensured that non-essential personnel are restricted from the exclusion zone (EZ) during MEC operations. DZLS worked with Matrix accommodations site visits by any regulatory agencies and Army personnel with advanced notice. Project personnel maintained a sharp vigilance to ensure non-essential personnel do not encroach into the EZ during MEC operations.

4.4 Mobilization

4.4.1 Preliminary Activities

During the initial mobilization, site management personnel included the following activities:

• Coordination with designated DZLS and Army personnel to finalize access requirements, location of any temporary facilities to be used, and communications requirements.

• Contact and coordination with DZLS and local fire, medical, and other emergency services to ensure availability of services, and the appropriate response actions IAW the AAR and Accident Prevention Plan (APP).

• Contact and coordination with local vendors for accommodations as well as vendors/suppliers for routine purchases to ensure smooth project start up; and

• Inspection of the clearance area to identify possible environmental constraints, terrain limitations, and other interferences.

4.4.2 Mobilization of Manpower

Arrival of the work force was scheduled in a manner to facilitate immediate productivity. The initial local UXO team, reestablished grids and mobilized equipment to the site and set up work zone at the first week of each quarterly surface clearance activity. The rest of the team mobilized to the site and attended a one-day employee orientation and site briefing. All personnel mobilized to the site met requirements for OSHA hazardous waste operations training and medical surveillance requirements as specified in the APP/SSHP. Site personnel were also trained to perform the specific tasks to which they are assigned. At no time were site personnel tasked with performing an operation or duty for which they did not have appropriate training and experience.

December 2022 AAR

LONE STAR AAP HEDG SURFACE CLEARANCE AFTER ACTION REPORT

4.5 Site Facilities Set-Up

4.5.1 Field Office Setup

The field office was established in LSAAP Building XX-103 located west of the HEDG. The field office provided facilities for the site management team, a location for site worker training and meetings and to take rest cycle breaks. Vegetation around Building XX-103 was cut as needed to create a parking area and to reduce insect habitat.

4.5.2 Setup of the Waste Staging Area

The area adjacent to the former Decontamination Building, located west of the HEDG, was utilized as the metal and MDAS waste staging area. Specific location of the staging area was determined by the SUXOS and approved by DZLS. The staging area and any waste containers was inspected weekly, and the results of the inspection documented.

An ATF Type II portable magazine was sited in accordance with DESR 6055.09 and DA PAM 385-64.

The magazine was located adjacent to the Decontamination building and the NEW did not exceed 100 lbs. The explosives safety quantity- distance (ESQD) for the magazine was 658 ft for HD 1.1. Matrix also had two ATF approved explosive storage bunker within five miles of the site to store explosives, to avoid delays in operations waiting for explosive shipments.

4.6 Site Specific Training and Orientation of Field Personnel Site-specific training for all on-site personnel assigned to this project was performed as part of the mobilization process. The purpose of this training is to ensure all on-site personnel fully understand the operational procedures and methods to be used during this project. Individual responsibilities and safety and environmental concerns associated with operations were also be covered in the training.

The UXOSO conducted the training sessions which included the topics identified below:

• Field equipment operation, including the safety and health precautions, field inspection and maintenance procedures that was used.

• Interpretation of relevant sections of this AAR and APP/SSHP as they relate to the tasks being performed.

• Personnel awareness of potential site and operational hazards associated with site-specific tasks and operations.

• Public relations to ensure that personnel do not make any public statements to the media without prior coordination with and approval of the Army.

• Environmental concerns and sensitivity including endangered/threatened species and historic, archeological, and cultural resource issues.

• Additional training as required; and

• Identification of features, hazards, and disposal methods of MEC that may be encountered.

4.6.1 Additional Site-Specific Training for Non-UXO Qualified Personnel

The UXOSO conducted additional site-specific training for non-UXO qualified personnel approved in the site DARAD when they are required to be at the HEDG. The training covered topics ranging, for instance, from how to evacuate a burning truck in the project area to UXO awareness training. The UXOSO utilized a site- specific course syllabus approved by the SUXOS as sufficiently covering the hazards within the HEDG that the non-UXO qualified personnel could encounter. Training courses are:

• Evacuation from the HEDG: Training included various scenarios associated with the HEDG surface clearance to include, at a minimum, the use of clear and marked pathways, how to evacuate following a qualified UXO Technician and to emergency evacuate without a qualified UXO Technician (i.e., truck catches fire).

• UXO/MEC Awareness: Training included potential UXO/MEC hazards acquainted with the HEDG to include the capability to identify potential UXO/MEC hazards, how to avoid UXO/MEC hazards safely, use of the USACE 3Rs, and a general understanding of how UXO/MEC can be set initiated.

• Site Hazard Response: Training included procedures non-UXO qualified personnel are to follow in potential hazardous scenarios at the HEDG including Procedures to implement in the event of an accidental detonation; actions to take to address to a small to moderate fire within the HEDG; and procedures to address an injured person within the HEDG.

4.7 Equipment

4.7.1 Equipment

All equipment was inspected as it arrived to ensure it is in proper working order. Any equipment found damaged or defective was repaired or returned to the point of origin, and a replacement was secured. All instruments and equipment requiring routine maintenance and/or calibration was checked initially upon arrival and then re-checked prior to use each day. For any piece of equipment found to be not operating correctly and field repair cannot be made, the equipment was tagged and removed from service. If equipment is procured through a rental agency, a request for replacement equipment was placed immediately. Replacement equipment meet the same specifications for accuracy and precision as the equipment removed from service. Matrix owned equipment is taken to a licensed repair shop and inspected. All equipment was decontaminated and checked thoroughly for MEC and /or MPPEH before it leaves the site.

As part of the initial equipment set-up and testing, communication equipment was tested including the following:

• Security Band Radios (if made available from DZLS) to maintain communication with LSAAP personnel.

• Hand-held portable radios used to maintain communications between the SUXOS, UXOSO, UXOQCS and the field teams; and

• Cellular telephones to be used as back up communications between the office, SUXOS/UXOSO, and the field teams.

4.7.2 Equipment and Navigation Systems (Analog Methods)

The following industry proven instruments have been selected for use during the surface clearance - all metals detectors (e.g., White Spectrum XLT) and/or ferrous detectors (e.g., Schonstedt). The type of instrument used was determined by site conditions and most suited to achieve project objectives.

Field teams used handheld GPS units for site orientation and navigation. The GPS units were preloaded with a site map and site/grid coordinates.

4.8 Surface Clearance

The surface clearance of MEC/MPPEH/MD and all metal 2 inches by 2 inches or greater at the HEDG (shown in Figure 3-1 of Appendix B) was conducted according to the steps outlined below.

4.8.1 Project Notifications

The DZLS Project Manager provided public notification prior to the start of each sweep event. SUXOS contacted applicable local emergency services and verify availability of potentially required services and confirm notification procedures. The list of project points of contact is included in Appendix C of this

AAR.

4.8.2 Compliance with Plans and Procedures

All personnel strictly adhered to approved plans and established procedures throughout this project. In the event operational conditions change and there was a need to change approved procedures, careful evaluation of potential changes was conducted by on-site supervisory personnel. As an example , Procedure requests, with justification, was submitted in writing to the PM. Approved changes were implemented in a manner that ensured procedure compliance.

4.8.3 General Site Practices

All operational activities at the HEDG were performed under the supervision and direction of qualified UXO personnel in accordance with (IAW) the WP. Non-UXO qualified personnel are prohibited from performing any operation in the HEDG unless accompanied and supervised by a

UXOTII or higher.

4.8.4 Overall Safety Precautions and Practices

Safety and operational briefings were conducted daily. All site personnel are authorized to temporarily stop work when an unsafe condition or procedure is observed. Additionally, safety stand-downs may be conducted by the SUXOS, UXOSO and/or UXOQCS at any time a deviation or degradation of safety warrants review or corrective action. Safety and operational training and briefings was performed IAW the project APP as summarized below:

1. Daily Safety Briefing: A safety briefing was conducted by the UXOSO or SUXOS for all site personnel each day before site work begins. Safety briefings focused on specific daily hazards, potential hazards and risks that may be encountered, and the safety measures to eliminate or mitigate the hazards. Briefings provided personnel with the known or potential task-specific hazards associated with the day’s planned operation. Activity Hazard Analysis (AHAs) forms used during the safety briefing to inform personnel of the task-related hazards, personnel protective equipment (PPE) and safe work practices to be implemented to mitigate task hazards. AHAs was updated in the field as field conditions change or new hazards are identified. A written record of the safety briefing was maintained in the Safety Meeting Attendance Log. The record identified topic(s) covered and attendees.

2. Visitor Safety Brief: All visitors entering the site must report to the project office (Bldg. XX-103), sign the visitor's log, and receive a safety briefing from the SUXOS or UXOSO. Visitors were escorted at all times by a UXO-qualified individual.

3. Environmental Concerns: The promotion of environmental sensitivity was an ongoing part of the daily safety and operational briefs.

4. UXO Refresher: UXO refresher training was given by the UXOSO or SUXOS to all UXO personnel, on the known explosive hazards to be encountered on site. Refresher topics included identification of explosives potentially encountered on site, including identification of MEC, specific hazards, and disposal methods.

5. Additional Training: The project SSHP details additional on-site training.

4.8.5 Anomaly Avoidance

Anomaly avoidance procedures IAW USACE EM 385-1-97, Change 1 was provided to all non-UXO qualified personnel. A UXO qualified person (UXOQP) is a UXOTII or higher and performed as escort for all non-UXO qualified personnel (e.g., Army personnel, DZ-LS personnel, essential project personnel, and regulatory site visitors) required to work inside the HEDG. Escorted personnel followed behind the UXOQP, and if a MEC item or anomaly is detected, the UXOQP provided a safe course around the item of concern. Anomalies/MEC encountered during escort was marked for recovery at a later time.

4.8.6 Vegetation Removal

Minimal vegetation removal was performed at the HEDG utilizing manual cutting to clear vegetation in areas where visual survey of the surface is obscured by brush.

4.8.7 Minimum Separation Distances

Minimum separation distances for the HEDG were implemented IAW Table 4-1. Explosives Safety Quantity-Distances are shown in Figure 3-1 of Appendix B.

In addition to the MSDs, additional work zones were established prior to initiating MEC investigation activities. EZs was established around the operation defining the HEDG MEC surface clearance area.

Areas outside the MSD served as Support Zones (SZs). A designated site for personnel to meet in the event of an emergency was established within the SZ and contained a first aid kit, an eyewash station, a fire extinguisher, and emergency communications.

Table 4-1. Minimum Separation Distances for MEC/MPPEH Clearance

Footnotes:

(1) See Appendix B for Fragmentation Distance Maps

(2) TSD for standard MEC/MPPEH Clearance is the K40 Distance

4.8.8 Manual Surface MEC/MPPEH Clearance

Manual surface MEC/MPPEH/MD clearance was performed in all areas of the HEDG using the following procedures:

Sweep Procedures: Surface MEC, MPPEH, MD and metal clearance activities within the HEDG area (see Figure B-1) removed all MEC and metal larger than 2-inches by 2-inches.

Initially One 7-person sweep team, consisting of 1 UXOTIIIs and 6 UXOTIIs. The clearance team was supervised by the SUXOS and UXOTIIIs. The UXOSO provided training and safety oversight and the UXOQCS provided Quality Control for all activities conducted for this project.

Using handheld GPS, the team established grid boundaries and corners in the field. Once grid boundaries were established, the team created 5-foot search lanes within the grids with rope, pin

Matrix com December 2022 AAR.docx

Area Munitions with the Greatest Fragmentation Distance

(MGFD)

Minimum Separation Distance (MSD) Feet

For Unintentional Detonations

For Intentional Detonations

Hazardous Fragment Distance

(HFD)

Team Separation Distance

(TSD)

Maximum Fragment Distance Horizontal

(MFD-H)

Buried Explosion Module (BEM)

HEDG 8-IN M106 535 142 3,171 200

flags, or marking paint from corresponding marks on the north and south boundary lines. The UXOTIIs lined up abreast spaced 5 feet apart to conduct the visual search of the HEDG. The UXO team leader (UXOTIII) aligned the team to ensure no interference with the technicians in adjacent lanes. The Technicians advanced in a slow, continuous pace; visually inspecting the surface for MEC/MPPEH or metal. The two UXOTIIIs walked behind the UXOTIIs controlling the progress of the visual surface sweep and ensuring no MEC/MPPEH or 2-inches by 2-inches MD is missed. Each lane was walked until the search lane completed. The UXO team then re-position in the next series of lanes and repeated the process until the grid is completed. The UXO team leader closely monitored individual performance throughout the sweep ensuring proper intervals and search techniques are followed, and the UXO team was supervised by the site SUXOS.

Surface contact/anomalies located during the surface clearance was visually inspected, identified and assessed for hazards by two UXO personnel to determine the type of ordnance or metal detected. If the item/anomaly is MEC, the explosive hazard was evaluated. Items unacceptable to move were marked with red-crossed pin flags and undergo BIP procedures. Items acceptable to move (per USACE EM 385- 1-97, Section 1.2.C.01 and Table I.2-1) carefully relocated to a consolidation point and demolition activities was planned. All required information for each item was recorded on a surface clearance MEC sheet and transferred into the project MEC Accountability Log.

Clearance progression data was fed back to experienced GIS personnel and maps were updated at the end of each week and provided to DZLS.

The UXOQCS performed a quality control (QC) survey. Upon acceptance, the UXOQCS notified the SUXOS and DZLS authorized QA personnel periodically regarding which grids are complete and are ready for QA.

4.8.9 MEC Items Encountered

MEC identification begins as soon as a suspected item is located. The UXO technician locating the item contacted the UXOTIII Team Leader when a suspect item is located. The UXOTIII identified the item and mark the location with a pin flag and notify the SUXOS or UXOSO requesting the item be evaluated for safe movement. Items acceptable to move were moved to a designated in-grid consolidation point.

Items determined unacceptable to move were classified as a BIP. No BIP items were identified during the Fall 2022 Surface Clearance Activities. Demolition was performed weekly, or as needed, utilizing onsite explosives stored at the approved BATEF explosive storage magazine. In the event a positive identification of the item cannot be made, SUXOS notified DZLS and other Army personnel including Mr. Mark Haughs, Army BRAC/CALIBRE for assistance.

Prior to disposal, the location of each MEC item within the grid and all relevant information related to the item was recorded in the grid log.

The MEC Accountability logs are presented in Appendix C Progress Reports. Post disposal actions for all MEC include re-inspection of all produced ordnance debris to ensure it can be classified as MDAS. If the demolition operation fails to reduce the MEC to MDAS, demolition operations was repeated until all ordnance debris can be designated as MDAS and controlled as indicated in Paragraph 4.11 Recordkeeping. No failures were noted.

In the Fall 2022 Surface Clearance sweep there were 42 different types of MEC Items recovered and destroyed for a total of 3,591 MEC items destroyed in consolidated shots. The types and general category are summarized in Table 4-2 below.

4.2 Fall 2022 Quarterly Surface Clearance Sweep MEC Items Encountered by Category

MEC Item Category Count Percentage 20 mm Projectiles 1284 35.8% M-42/Mini M42 Submunitions 1095 30.5% Projectiles larger than 20mm 616 17.2% Fuzes (Base and Point Detonating) 370 10.3% Bursters (M5) 64 1.8% Detonator Trays 55 1.5% Mortars 29 0.8% Miscellaneous Energetic Material 28 0.8% Boosters 22 0.6% Dispense Mines (BLU 92/91/ M43) 18 0.5% Grenade/Grenade Fuzes 4 0.1% Bomb Fuzes 3 0.1% Rocket (66 mm- LAW) 3 0.1% Total 3591 100.0%

MEC Density as measured by MEC items per grid, is low around the perimeter, and higher in areas where the historic demolition holes were often placed, particularly along the center of Rows, D and E and Rows L, M, and N, as well as the side slopes of the retention pond where erosion is the greatest. See Figure 4-1 in Exhibit B.

4.8.10 MPPEH Items Encountered

When MPPEH is located the UXO technician locating the item contacted the UXO TIII Team Leader.

Once the item is identified as MPPEH it was further investigated to determine if an explosive hazard exists. The MPPEH was properly inspected and verified as described in paragraph 4.10.1 below. If the MPPEH has an explosive hazard it was designated as MEC requiring explosive demolition; if no explosive hazard exists, it was designated as Munitions Debris. Munitions Debris was controlled as discussed in Paragraph 4.11 Recordkeeping.

All MDAS was properly demilitarized in accordance with the DoD Manual (DoDM) 4160.28, Volumes 1, 2 and 3, Defense Demilitarization. Items determined to be MEC requiring explosive demolition during inspection was disposed of via consolidated shots if acceptable to move, if unacceptable to move blow in place procedures was used.

4.9 MEC, MPPEH and MDEH Demolition

4.9.1 MEC Disposal

Demolition operations was coordinated by the SUXOS, and/or Demolition Supervisor and were conducted IAW the procedures outlined in Department of Army (DA) Technical Manual (TM) 60A-1-1- 31, USACE EM 385-1-97, Change 1, Explosives Safety and Health Requirements Manual, and the MATRIX MEC Demolition Standard Operating Procedure.

During MEC disposal, safety is the primary concern. The most obvious requirements are to protect personnel, the general public, and the environment from fire, blast, fragmentation, and noise.

Detailed demolition procedures are found in SOP-011 and SOP-012, MEC Operations, Disposal of MEC located in the APP.

Physical control of the on-site disposal operations was accomplished by blocking access roads/trails to the site at the point of the EZ. Control of the disposal operations and area was maintained to ensure no unauthorized site access by non-essential personnel occurs. All essential personnel not part of the demolition team and all non-essential personnel were evacuated to a designated location outside the EZ prior to and during demolition operations.

The MFD-H for HEDG disposal operations is 3,171 feet, the MFD-H was calculated for each disposal operation. While preparing MEC for detonation, the UXOSO ensured the number of personnel on-site is kept to the minimum required to safely accomplish the disposal task.

4.9.2 Misfire Procedures

IAW 29 CFR 1910-109 (e)(4) vi, EM 385-1-1 §29, TM 60A-1-1-31, and SOP-011 and SOP-012 the following general procedures was strictly adhered to if a misfire occurs. The UXO Demolition Supervisor notified the SUXOS of the misfire. All other personnel were notified of the event via radio and instructed to hold their positions until the “ALL CLEAR” is given by the SUXOS. A mandatory 30-minute waiting period was observed for an electric misfire. The circumstances surrounding the misfire was included in the Daily Report.

A new detonator was attached to the detonating cord. Care was taken to fasten it properly, and the original charge was detonated. Branch lines were treated in the same manner as noted above.

A minimum 30-minute wait time for the electric initiation on all charges that failed to detonate was implemented.

The charge was reset, and another attempt was made to detonate the original charge. Scattered charges that do not contain detonators may be collected and detonated together.

4.9.3 MEC Transportation

Transportation of MEC onsite was done in a specially equipped pickup truck/UTV. The truck must have the appropriate placards and a non-sparking bed liner with tie down points. The MEC was stabilized with sandbags or placed in wooden box filled with sand and securely tied down. The driver of the transport vehicle was followed by another similar vehicle and driver to assist him in loading and unloading the MEC, and in the event of mechanical trouble. SOP-016 addresses safe vehicle operations and is attached to the APP.

4.9.4 Planned or Established Demolition Areas

All MEC items unacceptable to move were Blown-in-Place (BIP) and MEC deemed acceptable to move was consolidated within the southwest corner of the grid for MEC disposal procedures as described in Section 4.9.1 above.

4.9.5 Collection Points

Collection points are those areas used to temporarily accumulate MEC determined acceptable to move by the SUXOS and UXOSO. Consolidating of MEC for this project was conducted in the southwest corner of each grid or at the inspection/disposal area as shown in Figure 3-1 of Appendix B. MEC items at collection points was laid out as shown in USAESCH publication Procedures for Demolition of Multiple Rounds (Consolidated Shots) on Ordnance and Explosives (OE) Sites, dated August 1998 with terminology update dated March 2000 for the project. A copy of the publication was used and was available on-site. The maximum NEW at a collection point was limited such that the K40 overpressure distance for the total NEW does not exceed the HFD for the area. Consolidating multiple MEC were anticipated for this project.

On the day of the demolition event (consolidated shot) the maximum NEW for each individual consolidated shot was limited such that the K328 overpressure distance for the total NEW (including donor charges) does not exceed 35 pounds NEW and the MFD-H of 3,171 feet.

4.9.6 Blown-in-Place

No BIP items were destroyed during the Fall 2022 Surface Sweep. This information is found in the daily demolitions supervisors progress reports in Appendix C.

4.9.7 MPPEH Inspection and MDAS Storage Requirements

All MPPEH was assessed and its explosives safety status determined and documented prior to transfer.

MPPEH was documented by authorized and technically qualified personnel as MDAS after a

100% inspection and an independent 100% re-inspection to determine it was safe from an explosives

LONE STAR AAP HEDG SURFACE CLEARANCE AFTER ACTION REPORT

safety perspective prior to transporting to a metal recycling company, e.g., Tri State Iron and Metal Company in Texarkana, TX.

Two UXO qualified personnel performed the 100% inspection of each MPPEH item prior to removal from the grid. At a minimum, a UXOTII conducted an initial 100 percent inspection of each item and a UXOTIII conducted a 100% re-inspection. The inspections occurred within the clearance grid and determined if the item is MDAS MEC or Munitions Debris and ensure no explosive hazard is present. MDAS was segregated from other metal placed in temporary secure staging area designated at the start of the project.

Items determined to be MEC during the inspection/re-inspection process were disposed of via explosive demolition operations as discussed above.

The SUXOS performed random spot checks to ensure and verify the established inspection process is being implemented as required by the WP and all MDAS storage in secure containers is free of any explosive hazards and can be maintained in a secure separate fashion. If security of the lockable storage container(s) is breached in any way, the contents must be re-inspected 100% by two separate UXO Technicians, as discussed above.

The UXOQCS conducted daily audits of the above MDAS processing procedures to ensure the processes were being conducted as required by the WP. The UXOQCS performed random sampling of designated MDAS by pieces, volume, or area, to ensure items do not contain an explosive hazard.

Inspected and certified MDAS were secured in a locked container until final disposition to prevent comingling MDAS with material that has not been inspected.

All MPPEH items was properly demilitarized IAW the DoDM 4160.28, Volumes 1, 2 and 3, Defense Demilitarization.

4.10 MDAS and Metal Disposal

4.10.1 MDAS Final Disposition

The SUXOS certified the debris is free of explosive hazards and the UXOQCS verified the MPPEH inspection process has been followed.

DD form 1348-1A used to document the description of the container was used as the certification/verification documentation for each container. All DD 1348-1A’s must clearly show the typed or printed names of the SUXOS and UXOQCS, organization, signature, and contractor’s home office and field office phone number(s) of the UXOTII and UXOTII certifying and verifying the debris as free of explosive hazards. The following must be included on the Form:

a. Basic material content (Type of metal, e.g., steel, or mixed).

b. Estimated weight.

c. Unique identification of each of the containers and seals stated as being turned over.

d. Location where munitions debris or range-related debris was obtained.

e. Seal identification, if different from the unique identification of the sealed container.

LONE STAR AAP HEDG SURFACE CLEARANCE AFTER ACTION REPORT

The DD Form 1348-1A contains the following language to certify the metal has been properly inspected and certified as free of explosive hazards or related…