Fort_Glenn_ESP_rev0.pdf

REVISION 0

EXPLOSIVES SITE PLAN

REMEDIAL INVESTIGATION/FEASIBILITY STUDY

FORMER FORT GLENN

Umnak Island, Alaska

Open Burn/Open Detonation (OB/OD) Area

FUDS #F10AK029805

May 24, 2011

Prepared for:

U. S. Army Engineering and Support Center

Huntsville, Alabama and

U. S. Army Corps of Engineers, Alaska District Elmendorf AFB, Alaska

Contract No. W912DY-09-D-0061 Task Order: 0002

Prepared by:

12120 Shamrock Plaza, Suite 300

Omaha, Nebraska 68154

16170581

FIIP No.

ARIMS No.

TABLE OF CONTENTS Explosives Site Plan

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W912DY-09-D-0061-0002 ARIMS No.

1 SITE

2 ANTICIPATED START DATE

3 PURPOSE

4 SITE BACKGROUND AND CURRENT CONDITIONS

Location ............................................................................................................... 1 4.1 Current Conditions ............................................................................................... 2 4.2

5 EXECUTING AGENCIES

6 SCOPE OF INVESTIGATION/CHARACTERIZATION ACTION

7 SAFETY CRITERIA

8 METHODS OF DISPOSAL

9 MAPS

10 REFERENCES

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List of Tables Table 1 Investigation Area Summary Table 2 Minimum Separation Distances

List of Appendices Appendix A Maps

Figure 1 Former Fort Glenn Location Map Figure 2 Installation Boundary

Figure 3 Site Location Figure 4 Explosive Safety Quantity-Distance Arcs for MGFD, OB/OD Area

Figure 5 Alternate Storage Facility Location Appendix B Fragmentation Data Review Forms

20 lb Fragmentation Bomb, M41 (Comp B filled) 75mm HE Mk I Projectile

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Acronyms and Abbreviations

BEM Buried Explosion Module

CEPOA Corps of Engineers Pacific Ocean, Alaska

CERCLA Comprehensive Environmental Response, Compensation, and Liability Act

CFR Code of Federal Regulations

DA Department of the Army

DD Department of Defense

DDESB Department of Defense Explosives Safety Board

DERP Defense Environmental Restoration Program

DGM digital geophysical mapping

DoD Department of Defense

DoDI Department of Defense Instruction

EM Engineering Manual

EOD Explosive Ordnance Disposal

ESP Explosives Site Plan

ESQ-D Explosive Safety Quantity-Distance

ESS Explosives Safety Submission

FS Feasibility Study

FUDS Formerly Used Defense Site

HD/SCG hazard division/storage compatibility groups

HFD hazardous fragment distance

MC Munitions Constituent

MDAS material documented as safe

MEC munitions and explosives of concern

MFD maximum fragment distance

MFD–H maximum fragment distance–horizontal

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MGFD munition with the greatest fragmentation distance

Mk Mark (munitions nomenclature) mm Millimeter

MMRP Military Munitions Response Program

MPPEH material potentially presenting an explosive hazard

MRS munitions response site

MSD minimum separation distance

NEW net explosive weight

NONEL Non-electric

NOTAM Notice to Airmen

OB/OD open burn/open detonation

OE ordnance and explosives

RI Remedial Investigation

SARA Superfund Amendments and Reauthorization Act

SI Site Inspection

SUXOS Senior Unexploded Ordnance Supervisor

TM Technical Manual

TP Technical Paper

URS URS Group, Inc.

USACE United States Army Corps of Engineers

USAESCH United States Army Engineering and Support Center, Huntsville

UXO unexploded ordnance

UXOSO Unexploded Ordnance Safety Officer

FORT GLENN – OB/OD AREA Explosives Site Plan

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SITE 1.0

1.1 This Explosives Site Plan (ESP) has been prepared in support of the Military Munitions Response Program (MMRP) Remedial Investigation and Feasibility Study (RI/FS) of the Open Burn/Open Detonation (OB/OD) Area at the former Fort Glenn, Umnak Island, Alaska. Former Fort Glenn, U mnak Island, Al aska, is located in the Aleut ian Islands (Figures 1 and 2). URS Group, Inc. (URS) is serving as the prime contractor for the United States Army Engineering and Support Center, Huntsville (USAESCH), under Contract Number W912DY-09-D-0061 Delivery Order 0002, to perform an RI/FS at the former Fort Glenn, Umnak Island, Alaska. Fort Glenn is a De fense E nvironmental Remed iation Pro gram Formerly U sed De fense Site ( DERP-FUDS), FUDS #F10AK029805.

1.2 As part of the overall remedial action process, this RI is being performed in accordance with t he Comprehensive E nvironmental Response, Compensation, and Liability Act o f 1980 (CERCLA), as a mended by t he Superfund Amendments and R eauthorization Act of 1986 (SARA). S ubsequent removal responses may be dictated in the future dur ing the remainder o f the remedial response process, as determined by action memoranda or other decision documents.

Based o n the r esults o f this c haracterization and subsequent decision document, an Explosives Safety Submission (ES S) will be su bmitted in acco rdance w ith Depart ment of Defense (Do D) Manual, DoD 6055.09-M (DoD 2008a).

ANTICIPATED START DATE 2.0

The a nticipated pr oject start date f or field a ctivities is 1 June 2011 . Intrusive act ivities are anticipated to begin on 14 June 2011.

PURPOSE 3.0

The purpose of t his ESP is to ensure all applicable DoD explosives safety standards are applied during the RI at t he OB/OD Area located at t he former Fort Glenn. This ESP provides information regard ing the s ite background and current conditions, execut ing agencies, scope of the investigation, sa fety criteria, and methods of d isposal. This ESP was written in accordance with requirements presented in DoD 6055.09-M (DoD 2008a).

SITE BACKGROUND AND CURRENT CONDITIONS 4.0

Location 4.1

4.1.1 The former Fort Glenn is located on the ea stern end of Umnak Island in the Fox Islands of the Aleut ian Island Chain o f Alaska (Figure 1). Umnak Island lies approximately 50 miles southwest of Dutch Harbor and 850 miles southwest of Anchorage, Alaska.

4.1.2 The OB/OD Area is situated on 2,076 acres northwest of the main runway (Figure 3).

The OB/OD Area consists of small gently rolling hills on the northeast and southwest sides with a small valley in the center. T wo distinct clusters of suspected demolition craters are visible in

Site

Antici pated Start Date

Purpo

Site Backgro und and Current Conditio

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historical aer ial photographs. T he largest craters are located at N 53º 22 56 W 167º 56 51 , and the other craters are located approximately one-half mile to the southeast.

4.1.3 A site vi sit dur ing the Archives Search Report (28 August 2001) noted several large craters created by demolition act ivity. T he area was descr ibed as being littered with debris, t o include an undetermined amount of unexploded items including electric blasting caps, an Mk II hand grenade, and 20-millimeter (mm) and 37mm projectiles.

4.1.4 In July 2002, a Fort Richardson Explosive Ordnance Disposal (EOD) team went to the site to dispose of the reported munitions and explosives of concern (MEC) (Ferris and Bivens 2002). The EOD team dest royed numerous MEC items u ntil t hey e xpended all o f t heir demolition materials. According to their EOD Incident Report, more MEC items remain in and around the northwestern demolition craters.

4.1.5 The OB/OD A rea was investigated as part of a S ite Inspection (SI) in 2007 (Parsons 2008). In the S I Report, the OB/OD Area is identified as t he De molition A rea Munitions Response Site ( MRS). A qua litative r econnaissance wa s per formed to assess t he p resence of MEC. Numerous craters were observed with non-identifiable metal fragments in t he surrounding area and the Schonstedt detected surface and subsurface anomalies throughout the area. Areas o f soil d iscoloration were also observed. Nine u nfired 75mm pract ice projectiles were found just north of the De molition Area MRS. Three soil samples were collected at t his site. Only one e xplosive co mpound (t etryl) was detected, and several metals were det ected as expected. Surface water from the seep used by the ranch house for their water supply was tested, and per chlorate was det ected at an es timated co ncentration that was we ll below its r isk-based screening levels.

Current Conditions 4.2

4.2.1 The Fort Glenn facility consisted of numerous structures including Quonsets, revetments, metal sheds, hangars, reinforced concrete buildings, pump houses, ammunition magazines, and three airfields. Twelve camps, north and east of the runways, were part of the main cantonment area. Most o f the st ructures that were built still exist in a deca yed state and are uninha bitable.

The st ructures cannot be d isturbed because Former Fort Glenn is r egistered as a National Historic Landmark. Some of the structures that are still standing and the remnants of decayed structures can be seen on the aerial maps provided as figures in this ESP.

4.2.2 The portion of former Fort Glenn being investigated by this RI/FS is currently owned by the S aint George Tanaq Corporation a nd the S tate o f Alaska. The Ber ing P acific Ra nches Limited has le ased t he property since 1993. T he Bering Pa cific ra nch house and slaug htering facility is located in the middle of the former Fort Glenn site. In addition to cattle ranching, there is some recreational use for hunting. There are also occasional visits to the site by scientists and engineers studying the volcanic activity.

4.2.3 Public access to the site is not restricted and is open in many areas; however, there is a lack o f public ( i.e., very small po pulation) and access t o this r emote location is no t easily accomplished. There is a landing beach on t he east coastline at Otter Bight. The s ite has a

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system of cinder roads, some of which are in reasonably good shape for vehicular traffic. The site also has a cinder runway that can be used for light aircraft. A Notice to Airmen (NOTAM) is not required; h owever, t he Unalaska Air Manager w ill be notified pr ior to any disposal activities.

EXECUTING AGENCIES 5.0

United States Army Engineering and Support Center, Huntsville (USAESCH) Corps of Engineers Pacific Ocean, Alaska (CEPOA)

SCOPE OF INVESTIGATION/CHARACTERIZATION ACTION 6.0

The purpo se o f the pro ject is t o complete an RI at t he OB/OD Area t o determine if respo nse actions are necessary. A manual surface a nd subsurface investigation co mprised o f a surface clearance, digital geo physical mapping (DGM) on t ransects and in select grids, intrusive investigations o f select ed t arget anomalies t o depth of detect ion, and e nvironmental sampling will be conducted to characterize the nature and extent of pot ential MEC and munitions constituent (MC). Table 1 summarizes the actions planned for the OB/OD Area at former Fort Glenn. Field investigation activities will be documented in an RI report.

Table 1 Investigation Area Summary

Area Munitions Response Action Response Acreage

Open Burn/Open Detonation (OB/OD) Area

A remedial investigation to include a surface clearance, DGM on transects and in select grids, manual intrusive investigations of selected target anomalies, and MC sampling

2,076

SAFETY CRITERIA 7.0

7.1 The munition with the greatest fragmentation distance (MGFD) at the OB/OD Area is identified in Table 2. The explosive safety quantity-distance (ESQD) arcs for the MGFD at the OB/OD Area are shown on Figure 4. During t he co urse of this investigation, if a MEC item with a great er fragmentation distance is encountered, the minimum separation distances (MSDs) will be ad justed in accordance with Department of Defense Explosives Safety Board (DDESB) Technical Paper (TP) 16 (DDESB 2009a); operati ons will continue, and a n amendment to this ESP will be submitted expeditiously for approval; and a copy of this document will be available on site. ESQ-D arcs will be adjusted accordingly.

7.2 Refer to Appendix B for Fragmentation Dat a Review Forms a nd Table 2 for MSDs.

Any occupied buildings or public roadways/waterways in the MSD areas during MEC operations

Execu ting Agencies

Scope

Investig ation/Ch aracteri tion Action

Safety Criteria

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will be ev acuated and/or ro adways/waterways blocked to prevent non-essential personnel from entering during the conduct of MEC operations.

7.3 MPPEH procedures will be IAW DoDI 4140.62 and EM1110-1-4009. All Material Potentially Presenting an Explosive Hazard (MPPEH) will be assessed and its explosives safety status determined and documented prior to transfer within the DoD or release from DoD control.

Prior to release to the public, MPPEH will be documented by authorized and technically qualified perso nnel as M aterial Docu mented as Sa fe (MD AS) after a 100% inspection and a n independent 100% re-inspection t o determine that it is safe from an e xplosives safety perspective.

7.4 Chemical warfare material is not suspected at the OB/OD Area. Potential MEC at the OB/OD Area is based on an EOD Incident Report (Ferris and Bivens 2002) and SI data (Parsons 2007):

75mm, Practice Projectile 75mm, Mk I HE Projectile 37mm, Projectile (identified in photograph) Fuze, BD, for 6-inch APHE Projectile Fuze, PD, M51A1 Grenade, Hand, Fragmentation, Mk II Bomb, Fragmentation, 20-pounds, AN-M41 Bomb, Fragmentation, Parachute Retarded, 23-pounds, AN-M41 Fuze, Bomb, Nose, M100 Series Blasting Caps, electric and non-electric, M6 and M7

7.5 Based on this information, the MGFD at the OB/OD Area has been determined to be the 75mm Mk I HE projectile. Table 2 lists the MSDs in feet for both intentional and unintentional detonations.

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Table 2 Minimum Separation Distances

Area MEC 2

MSD (feet) 1

For Unintentional Detonations

For Intentional Detonations

HFD

Team Separation

Distance (K40)

Without Engineering

Controls

(MFD-H)

Using Sandbag

Mitigation

OB/OD Area 75mm Mk I HE Projectile 239 593 1873 200

Notes:

1 See Appendix B for fragmentation data review forms documenting the MSDs.

2 MGFD during remedial investigation activities within areas indicated above.

3 K40 is based on the AN-M41, 20-lb fragmentation bomb, which has a greater K40 (59 feet) than the 75 mm Mk I HE projectile (47 feet), see

Appendix B.

HFD = hazardous fragment distance K40 = team separation distance based on the formula: D=40W1/3 MEC = munitions and explosives of concern MFD-H = maximum fragment distance – horizontal MGFD = munition with the greatest fragmentation distance MSD = minimum separation distance

8.0 METHODS OF DISPOSAL

8.1 Munitions that are encountered during this RI that have been determined to be unacceptable t o move by the Se nior Unexploded Ordnance (UXO) Supervisor (SUXOS) and UXO Safety Officer (UXOSO) will be detonated in place. Munitions that have been determined acceptable to move by the SUXOS a nd UXOSO may be relocated within the MRS for disposal.

On-site transportation of explosives will be conducted in accordance with applicable sections of 49 Code of Federal Regulations (CFR) Part 397.

8.2 Collection points are those areas used to temporarily accumulate MEC determined acceptable to move by the SUXOS and UXOSO pending destruction us ing consolidated shots.

MEC items a t collection p oints must be laid out as s hown in “Procedures for Demolition o f Multiple Rounds ( Consolidated Shots) on Ordn ance and Explosives (OE ) Sites” ( USACE 1998b). The maximum net explosive weight ( NEW) at a collection point will be limi ted such that t he K40 o verpressure d istance for t he tot al NEW does not exceed t he hazardous fragment distance (HFD) for t he area. Collection po ints a re ant icipated for t his project. MEC items at collection points will either be disposed of that day or guarded until disposal is accomplished.

8.3 Consolidated MEC items for disposal that have been determined acceptable to move will be completed in acco rdance with DDE SB Memorandum “DDE SB Approval o f Min imum Separation Distance to Non-Essential Personnel When Us ing DDE SB-Approved Co nsolidated Shot M ethod” (DDESB 2009b) and “Procedures for Demolition of Multiple Rounds (Consolidated Shots) on Ordnance and Explosives (OE) Sites” (USACE 1998b). The maximum

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NEW for a consolidated shot will be limited such t hat the K328 overpressure distance for the total NEW (including donor charges) does not exceed the MSD for the intentional detonation.

8.4 The UXOSO will ensure that appropriate MSDs for non-essential and essential personnel are properly established and maintained in accordance with the approved ESP. The MSDs for intentional and unintentional detonations for the OB/OD Area are located in Table 2. Figure 4 illustrates the ESQ-D arcs for the site.

8.5 MEC disposal operations will be supervised by the SUXOS. MEC disposal activities will be conducted using qualified UXO personnel in accordance with TP-18 (DDESB 2004).

Explosive operations will follow t he pro cedures outlined in EM 385-1- 1 (USACE 2008a), EM 385-1-97 (USACE 2008b), and Technical Manual (TM) 60A-1-1-31 (DA 2008).

8.6 If employed, single item intentional detonations that require engineering controls to mitigate the effects o f blast and fragmentation will be conducted in accordance with HNC-ED- CS-S-98-7 (USACE 1998a), USACE safety advisory dated 12 July 2010 (USACE 2010), DDESB Memorandum “Clarifications Regarding Use of Sandbags for Mitigation of Fragmentation and Blast Effects Due to Intentional Detonation of Munitions” (DDESB 2010), or DDESB TP-16 Cha pter 6, Buried E xplosion Modu le ( BEM) P rocedures (DDES B 2009a), as applicable, to reduce MSDs for intentional det onations. Copies o f these do cuments w ill b e available on site.

8.7 The SUXOS will make appropriate notifications prior to any MEC disposal operations.

Disposal operat ions wil l be ini tiated by a rad io firing device and non-electric (NONEL) s hock tube detonators or electric blasting caps. Donor charge explosives will consist of jet perforators.

8.8 Due to the remoteness of the former Fort Glenn, donor explosives will be stored in two container express units configured to meet the requirements stated in 27 CFR 55.207 and 55.208 (Bureau of Alcohol, Tobacco, and Firearms Explosive Laws and Regulations 2007) as alternate storage facilities. Total control of donor explosives will be maintained on site. The locations of these alternate storage facilities for donor explosives storage at Fort Glenn are shown on Figure

5. T he units wil l be locked with high-security padlocks having at least five tumblers and cas e hardened shackles. All commercial donor explosives will have assigned DoD hazard division/storage co mpatibility groups (HD/SCG) and will be st ored and secured in accordance with DoD 6055.09-M (DoD 2008a), Department of Army Pamphlet 385-64 (DA 1999).

8.9 The NEW stored in an alternate storage facility will not exceed 150 pounds.

8.10 The units will be placed no closer than 58 feet from each other, 489 feet from any public traffic ro utes and/or 815 feet from any inhabited structures (27 CFR Part 555.218). URS will configure two alternate storage facilities to segregate main charge donor explosives from initiators to ensure proper compatibility of items dur ing storage. URS wi ll closely monitor the explosive inventory to ensure the maximum NEW is not exceeded. ESQ-D arcs for the alternate storage facilities are shown on Figure 5.

8.11 The SUXOS or Site Manager will be the only personnel authorized to request and receive donor explosives.

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9.0 MAPS

Figure 1 shows the location of Umnak Island.

Figure 2 shows the location of Fort Glenn on Umnak Island and the installation boundaries.

Figure 3 shows the location of the OB/OD Area on former Fort Glenn.

Figure 4 shows the ESQ-D arcs for HFD and MFD-H that will be used during RI activities at the OB/OD Area.

Figure 5 sho ws t he locations o f the e xplosives alternate sto rage facilities and the inhabited building distance for the alternate storage facilities.

REFERENCES 10.0

Code of Federal Regulations. T itle 49, Part 397 (49 CFR , Part 397). 2010. Transportation o f Hazardous Materials; Driving and Parking Rules. December.

Department of the Army (D A). 1999. DA Pam phlet (DA PAM) 385- 64, Ammunition and Explosives Safety Standards. December.

DA. 2008. TM 60A-1-1-31, Explosives Ordnance Disposal Procedures, General Information on EOD Disposal Procedures (Revision 5). October.

Department of Defense Explosives Safety Board (DDESB). 2004. TP-18, Minimum Qualifications for Unexploded Ordnance (UXO) Technicians and Personnel. December.

DDESB. 2007. Technical Updat e, Implementation o f DDESB Guidance on M inimum Separation Distances for Unintentional Detonations. September.

DDESB. 2009a. TP-16. Methodologies for Calculating Primary Frag ment Characteristics.

Revision 3. April.

DDESB. 2009b. DDESB Approval of Minimum Separation Distance to Non-Essential Personnel When Using DDE SB-Approved Consolidated Shot Method, September 25, 2009. September.

DDESB. 2010. “Clarifications Regarding Use of Sandbags for Mitigation of Fragmentation and Blast Effects Due to Intentional Detonation of Munitions.” 29 November.

Department of De fense (DoD). 2008a. DoDM 6055.09-M-V7, DoD Ammunition a nd Explosives Safety Standards. February, administratively reissued August 4, 2010.

DoD. 2008b. DoD Instruction (Do DI) 4140.62, Materi al Potentially Present ing an Expl osive Hazard. November.

Maps

Refe rences

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Ferris and Bivens 2002. SSG Tom Ferris & SGT John Bivens. 24-29 Jul 02 Combined Incident to Kodiak and Fort Glenn, Alaska. July.

Parsons. 2008. Site Inspection: former Fort Glenn, Umnak and Unalaska Islands, Alaska. Final

Revision 3. September 5.

United States Army Corps of Engineers (USACE). 1998a. Serena, J.M. and Crull, M. “Use of

Sandbags for Mitigation of Fragmentation and Blast Effects Due to Intentional Detonation of Munitions.” Huntsville Division, HNC-ED-CS-S-98-7. August.

USACE. 1998b. Procedures for Demolition of Multiple Rounds (Co nsolidated S hots) on Ordnance and Explosives (OE) Sites. Engineering and Support Center, Huntsville.

August (Terminology Update March 2000).

USACE. 2007. Engineering Manual (EM) 1110-1-4009. Military Munitions Response Actions.

June.

USACE. 2008a. EM 385-1-1, Safety and Health Requirements Manual. 15 September.

USACE. 2008b. EM 385-1-97, Explosives Sa fety and Health Requi rements Ma nual. 15 September. (Errata 1 through 5 dated June and July 2009 and April 2010.)

USACE. 2010. “Safety Advisory: Use of Jet Perforator During Intentional Detonation While Using Sand Bag Mitigation for Engineering Controls.” CEHNC-CX-MM. 12 July.

APPENDIXA Maps

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Figure 1 Former Fort Glenn Location Map Figure 2 Installation Boundary

Figure 3 Site Location Figure 4 Explosive Safety Quantity-Distance (QD) Arcs, OB/OD Area

Figure 5 Alternate Storage Facility Location

Anchorage

B e r i n g S e a

Alaska

No r th P ac i f i c Ocean

Russia

Canada

Former Fort Glenn

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Dutch Harbor

Umnak Island

A l u e t i a n I s l a n d s

Former Fort Glenn

Study Area

Umnak P ass

Inanudak Bay

NikolskiU m n a k I s l a n d

Tulik Volcano

Mount Vsevidof

B e r i n g S e a

No r th P ac i f i c Ocean

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Former Fort Glenn Location Map Umnak Island, Alaska

Russia

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1. NAD83 Alaska State Plane Zone 10, Feet.

Date:

BP

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1. NAD83 Alaska State Plane Zone 10, feet.

2. Aerial photo source: 1988, TEC

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Installation Boundary RI/FS at Former Fort Glenn

Umnak Island, Alaska

0 12,000 24,0006,000 Feet¹

Legend

Installation Boundary

Bering Sea

North Pacific Ocean

Inanudak Bay

Umnak P ass

U m n a k I s l a n d

Tulik Volcano

Umna k P as s

OB/OD Area

1. NAD83 Alaska State Plane Zone 10, feet.

2. Aerial photo source: 1988, TEC

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Site Location RI/FS at Former Fort Glenn

Umnak Island, Alaska

0 2,000 4,0001,000 Feet¹

Legend

Site Boundary

Bering Sea

North Pacific Ocean

Inanudak Bay

Umnak P ass

U m n a k I s l a n d

OB/OD Area

1. NAD83 Alaska State Plane Zone 10, feet.

2. Aerial photo source: 1988, TEC

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Explosive Safety Quantity-Distance Arcs for MGFD, OB/OD Area

RI/FS at Former Fort Glenn Umnak Island, Alaska

0 2,000 4,0001,000 Feet¹

Legend

Hazardous Fragmentation Distance (HFD) (239ft based on 75mm MK I HE Projectile)

Maximum Fragmentation Distance-Horizontal (MFR-H) (1873ft based on 75mm MK I HE Projectile)

Maximum Fragmentation Distance with Engineering Control (200ft using sandbag mitigation for 75mm MK I HE Projectile)

Site Boundary

Bering Sea

Inanudak Bay

Umnak P ass

U m n a k I s l a n d

Main Runway

Ranch Buildings

Proposed Camp Site

OB/OD Area

Notes:

1. NAD83 Alaska State Plane Zone 10, feet.

2. Aerial photo source: 1988, TEC

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Alternate Storage Facility Location RI/FS at Former Fort Glenn

Umnak Island, Alaska

0 500 1,000250 Feet¹

Legend

!( Alternate Storage Facility

Unbarricaded Inhabited Building Distance (815ft)

Site Boundary

Bering Sea

Inanudak Bay

Umnak P ass

U m n a k I s l a n d

2, fe et

3,275 feet

APPENDIXB Fragmentation Data Review Forms

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Appendix A Minimum Separation Distance Calculation Sheets

FRAGMENTATION DATA REVIEW FORMS INCLUDED:

20 lb Fragmentation Bomb, M41 (Comp B filled) 75mm HE Mk I Projectile

Munition Information and Fragmentation Characteristics

Theoretical Calculated Fragment Distances

Minimum Thickness to Prevent Perforation

Overpressure Distances

Required Sandbag Thickness

Water Containment System and Minimum Separation Distance:

Fragmentation Data Review Form

Category: Air-Launched HE Rounds

Munition: 20 lb Frag Bomb M41 (Composition B filled)

Case Material: Steel, Mild

Secondary Database Category: Bomb

Munition Case Classification: Robust

DODIC: E207

Individual Last Updated Record: SDH

Explosive Type: Composition B

Explosive Weight (lb): 2.8

Diameter (in): 3.7000

Maximum Fragment Weight (Intentional) (lb):

0.1298

Critical Fragment Velocity (fps): 4170

HFD [Hazardous Fragment Distance:

distance to no more than 1 hazardous fragment per 600 square feet] (ft):

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

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

Inhabited Building Distance (1.2 psi), K40 Distance: 59

Unbarricaded Intraline Distance (3.5 psi), K18 Distance: 27

Intentional MSD (0.0655 psi), K328 Distance: 486

4000 psi Concrete (Prevent Spall): 7.25

Mild Steel: 1.41

Hard Steel: 1.16

Aluminum: 2.82

LEXAN: 7.21

Plexi-glass: 5.59

Bullet Resist Glass: 4.83

Kinetic Energy 10⁶ (lb-ft²/s²): 1.1280

Required Wall & Roof Sandbag Thickness (in) 24

Expected Maximum Sandbag Throw Distance (ft): 125

Minimum Separation Distance (ft): 200

Kinetic Energy 106 (lb-ft²/s²): 1.1280

Water Containment System: 1100 gal tank

Minimum Separation Distance (ft): 200.000

Date Record Created: 9/21/2004

Last Date Record Updated: 12/23/2009

Date Record Retired:

Database Revision Date 4/26/2011

Intentional UnintentionalDesign Fragment Weight (95%) (Unintentional) (lb):

0.1298

7.25

2.82

1.41

1.16

7.21

4.83

5.59

Distribution authorized to the Department of Defense and U.S.

DoD contractors only for Administrative-Operational Use (17

October 2002). Other requests shall be referred to the Chairman, Department of Defense Explosives Safety Board, Room 856C, Hoffman Building I, 2461 Eisenhower Avenue, Alexandria, VA 22331-0600.

Fragmentation Method: Pre-formed Fragmenting

Record Created By: MC

Public Traffic Route Distance (2.3 psi); K24 Distance: 36

TNT Equivalent (Pressure): 1.16

TNT Equivalent Weight - Pressure (lbs): 3.248

Item Notes

TNT Equivalent (Impulse): 1.14

TNT Equivalent Weight - Impulse (lbs): 3.192

TNT Equivalent (Impulse): 1.14

TNT Equivalent Weight - Impulse (lbs): 3.192

Cylindrical Case Weight (lb): 14.81700

Munition Information and Fragmentation Characteristics

Theoretical Calculated Fragment Distances

Minimum Thickness to Prevent Perforation

Overpressure Distances

Required Sandbag Thickness

Water Containment System and Minimum Separation Distance:

Fragmentation Data Review Form

Category: Surface-Launched HE Rounds

Munition: 75 mm HE Mk I

Case Material: Steel, Mild

Secondary Database Category: Projectile

Munition Case Classification: Robust

DODIC:

Individual Last Updated Record: SDH

Explosive Type: TNT

Explosive Weight (lb): 1.64

Diameter (in): 2.9528

Maximum Fragment Weight (Intentional) (lb):

0.2135

Critical Fragment Velocity (fps): 3468

HFD [Hazardous Fragment Distance:

distance to no more than 1 hazardous fragment per 600 square feet] (ft):

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

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

Inhabited Building Distance (1.2 psi), K40 Distance: 47

Unbarricaded Intraline Distance (3.5 psi), K18 Distance: 21

Intentional MSD (0.0655 psi), K328 Distance: 387

4000 psi Concrete (Prevent Spall): 7.22

Mild Steel: 1.40

Hard Steel: 1.15

Aluminum: 2.77

LEXAN: 7.36

Plexi-glass: 5.75

Bullet Resist Glass: 5.02

Kinetic Energy 10⁶ (lb-ft²/s²): 1.2839

Required Wall & Roof Sandbag Thickness (in) 24

Expected Maximum Sandbag Throw Distance (ft): 125

Minimum Separation Distance (ft): 200

Kinetic Energy 106 (lb-ft²/s²): 1.2839

Water Containment System: 1100 gal tank

Minimum Separation Distance (ft): 200

Date Record Created: 9/21/2004

Last Date Record Updated: 3/8/2010

Date Record Retired:

Database Revision Date 4/26/2011

Intentional UnintentionalDesign Fragment Weight (95%) (Unintentional) (lb):

0.0392

3.71

1.47

0.72

0.59

4.86

2.73

3.32

Distribution authorized to the Department of Defense and U.S.

DoD contractors only for Administrative-Operational Use (17

October 2002). Other requests shall be referred to the Chairman, Department of Defense Explosives Safety Board, Room 856C, Hoffman Building I, 2461 Eisenhower Avenue, Alexandria, VA 22331-0600.

Fragmentation Method: Naturally Fragmenting

Record Created By: MC

Public Traffic Route Distance (2.3 psi); K24 Distance: 28

TNT Equivalent (Pressure): 1

TNT Equivalent Weight - Pressure (lbs): 1.640

Item Notes

TNT Equivalent (Impulse): 1

TNT Equivalent Weight - Impulse (lbs): 1.640

TNT Equivalent (Impulse): 1

TNT Equivalent Weight - Impulse (lbs): 1.640

Cylindrical Case Weight (lb): 9.52026