Attachment_C _MOTCO_ESS_7Aug13.pdf

Explosives Safety Submission

MUNITIONS AND EXPLOSIVES OF CONCERN

REMOVAL ACTION

Military Ocean Terminal Concord (MOTCO)

Port Chicago Terrestrial Explosion Area MRS Port Chicago Water Explosion Area MRS

Removal Action/Construction Support

Concord, CA

6 August 2013

Prepared by

US ARMY CORPS OF ENGINEERS

Engineering and Support Center, Huntsville i

TABLE OF CONTENTS

Section Page

1.0 BACKGROUND 1

2.0 MAPS 5

3.0 EXPLOSIVE SAFETY QUANTITY-DISTANCE 5

4.0 TYPES OF MEC 8

5.0 START DATE 8

6.0 MEC MIGRATION 8

7.0 DETECTION EQUIPMENT AND RESPONSE TECHNIQUES 8

8.0 DISPOSITION TECHNOLOGY 10

9.0 ENVIRONMENTAL, ECOLOGICAL OR CULTURAL CONSIDERATIONS 12

10.0 TECHNICAL SUPPORT 12

11.0 RESIDUAL RISK MANAGEMENT 12

12.0 UXO SAFETY EDUCATION PROGRAM 12

13.0 STAKEHOLDER INVOLVEMENT 12

14.0 CONTINGENCIES 12

APPENDIX A – MAPS A1

APPENDIX B – FRAG DATA SHEETS/MSD B1

1.0 BACKGROUND

1.1 Purpose

This Explosives Safety Submission (ESS) is for Construction Support and Removal Actions within the Port Chicago Terrestrial Explosion Area Munitions Response Site (MRS) and Port Chicago Water Explosion Area MRS at Military Ocean Terminal Concord (MOTCO), Concord, California (formerly known as Concord Naval Weapons Station (CNWS)) (See Figure 1-1).

There will also be a removal action prior to pier renewal construction activities in the Port Chicago Water Explosion Area MRS. This ESS will supersede the existing Explosives Safety Submission, DDESB-PE, dated 5 June 2009 with Amendment 1. The information generated from prior submissions will be used to establish the munitions with the greatest fragmentation distances (MGFDs). An After Action Report for the Explosives Safety Submission for the Military Ocean Terminal Concord (MOTCO) (5 Jun 2009), approved by DoD Explosives Safety Board (DDESB) will not be submitted. All prior ESSs and amendments for this site will be considered closed out.

1.2 Site Location

Military Ocean Terminal Concord (MOTCO) was a major naval munitions trans-shipment encompasses approximately 13,000 acres, and is located in the north-central portion of Contra Costa County, California (CA), 30 miles northeast of San Francisco. It is bounded by Suisun Bay to the north, Medanos Hills, the City of Pittsburg to the east, and the city of Concord to the south and west.

1.3 Site Description and History

1.3.1 History

The MRSs addressed in this ESS (Port Chicago Terrestrial Explosion Area MRS, and the Port Chicago Water Explosion Area MRS) of MOTCO are located within the affected area of the Port of Chicago Explosion of July 1944. From the 1940s through the 1990s, CNWS was a major naval munitions trans-shipment port on the West Coast. In 1944, there was an explosion in what was then known as Port Chicago, which is located in the Suisun Bay. The explosion involved more than 5,000 tons of ammunition, including MK79 fire bombs, MK47 depth bombs, MK49 650-lb depth bombs, M66 2,000-lb bombs, M65 1,000-lb bombs, MK33 1,000-lb bombs, M64 500-lb bombs, M58 500-lb bombs, MK54 350-lb bombs, MK10 projectors, 12-inch projectiles, 7.2-inch rockets, 5-inch rockets, 4.5-inch rockets, 3.5-inch rockets, 3- and 5-inch projectiles, M-5 fragmentation bombs, 20-lb fragmentation bombs, 220-lb fragmentation bombs, MK66 rocket motors, 83-mm rockets, pyrotechnics (MK1, MK 2, MK4, MK13), and 20- and 40-mm projectiles (Army-Navy Explosives Safety Board, 1945). As a result of the blast, munitions that underwent incomplete detonation or did not explode were scattered throughout the MRSs addressed in this ESS as well as the 135 acre Tidal EOD Area (See figures 3-1 and 3-2). Based on the quantity of munitions on the ships and railcars, the Preliminary Assessment (PA) estimated an impact radius of 12,000 feet extending from the former Pier 1.

1.3.2 Terrain and Vegetation

MOTCO is dominated by grasslands in the southern portion and salt marsh in the northern portion. Ephemeral wetlands may occur, with cattails, tules, willows, and sedge vegetation.

In the salt marsh habitats, human activities (diking, filling, and dumping since the late 1800s and installation of tidal gates in the 1940s) have caused highly disturbed areas with invasive plant species in some areas. In marsh habitats with undisrupted tidal influence, the area is relatively pristine with more characteristic plant species. There may be some difficulty maneuvering during operations on land due to some dense vegetation and the soft soil in the marsh and wetlands.

The vegetation in open-water habitat like that of Suisun Bay is predominantly phytoplankton, including green algae and blue-green algae. Phytoplankton production is extensive in Suisun Bay, especially during the spring and summer, and supports many animal species (San Francisco Estuary Project, 2003). Limited visibility in the water may cause difficulty in identifying underwater MEC in the Suisun Bay.

1.3.3 Soil Conditions.

According to the 2002 Integrated Natural Resources Management Plan (INRMP) for Detachment Concord, soils at MOTCO are Joice-Reyes association muck soils, which consist of silty clays and saline mucks that drain poorly. The Joice mucks form uniform wetlands that are susceptible to saltwater inundation during high tide events (U.S. Navy, 2002). The unconsolidated sediments in Suisun Bay have been described as almost entirely mud (San Francisco Estuary Project, 2003). The soil conditions at MOTCO are not expected to effect the functionality of detection equipment.

1.4 Current Land Use

The Area covered under this ESS is currently used to process, ship, and receive military general cargo and ordnance. The Port Chicago Water Explosion Area is open to public use (recreational fishing, recreational boating, duck hunting, etc.). The land portion of the MOTCO installation is secure.

1.5 Project Area

1.5.1 General

Descriptions of the project areas are given in Section 1.3 and are shown on Figures 3-1 and 3-2.

This ESS covers the munitions response action for ongoing construction activities within the Port Chicago Terrestrial Explosion Area MRS, and the Port Chicago Water Explosion Area MRS.

The munitions response actions (removal to depth of detection prior to pier construction at the Port Chicago Water Explosion Area, and Construction support for all on-going construction activities in both MRSs). All construction activities that involve intrusive activities will require

UXO Construction Support in clearance of construction footprints, whether it is a building, roadway, or installation of utilities on the installation, prior to the construction activity taking place. The exception will be when construction activities occur in an area where clearance activities have already been performed. In that case, UXO Standby Support will be used for those construction activities. The munitions response actions for the remaining areas will be addressed in future amendments to this ESS or a separate ESS.

1.5.2 Historical and Characterization Data Analysis

1.5.2.1 Port Chicago Terrestrial Explosion Area MRS

This MRS consists of 5,232 acres, and is bound on the North by Suisun Bay, where the Port of Chicago Explosion occurred. The 2010 Historical Records Review reports that approximately 600 MEC items MEC in the form of 5 in 38 Caliber Mk 35 projectiles, 3-inch/0.50-caliber projectiles, 20- and 40-mm projectiles, fragmentation bombs, and pieces of 500- to 1,000-lb bombs were recovered during 1945 clearance surveys. The HRR reports witness interviewees indicated that MEC items have been found in the forms of 5 in 38 Caliber Mk 35 projectiles, 3-inch/0.50-caliber projectiles, 20- and 40-mm projectiles, a grenade, one inert MK100 series PD fuse, 25 inert 100-lb M47 series and one 250-lb M57 series bombs filled with sand, one partial 7.2-inch Hedgehog series rocket, and one intact 7.2-inch Hedgehog series rocket. The HRR also mentions that in March and April of 2008, about five 75-mm projectiles were located, but the USACE Ordnance and Explosive Safety Specialist (OESS) determined that the items were later determined to all be 3-inch/0.50-caliber projectiles. Although MEC in the form of fragmentation bombs were found during the 1945 clearance surveys, there is no additional information available, and no fragmentation bombs have been discovered since that time. The MGFDs chosen for this MRS are the 5 in 38 Caliber Mk 35 projectile and 7.2-inch Hedgehog series rocket.

1.5.2.2 Port Chicago Water Explosion MRS

This MRS consists of 5,081 acres, and 4 piers located within the Suisun Bay are scheduled/contracted for renovations or expansions. The Port of Chicago explosion that occurred in 1944 occurred near the base of the current Pier 2. MEC and/or Discarded Military Munitions (DMM) are believed to be within the construction footprint of renewal/expansions of the 4 piers that are located within the MRS (See Figure 3-2). Construction activities were in progress in the Port Chicago Terrestrial Explosion Area MRS, which is directly adjacent to the location of the 4 piers that will be undergoing renewal construction, when a 5 in 38 Caliber Mk 35 was discovered. The MGFD for the Water Explosion MRS is based on the 5 in 38 Caliber Mk 35. In addition, descriptions of the explosion, the ordnance involved in the blast, and results of clearance surveys after the explosion are outlined in paragraph 1.5.2.1. The 7.2-inch Hedgehogs were not on the ships when the explosion occurred, and are not considered for the MGFD. They have been encountered on the land areas only, most likely a result of disposal activities. Therefore, the MGFD for the construction area, the 5-in 38 Caliber Mk 35 projectile, is based on the construction area being directly adjacent to the Port Chicago Terrestrial Explosion Area MRS.

1.5.3 Selected Munitions Response Actions

Table 1-1 summarizes the munitions response actions for the MRSs.

Table 1-1 Munitions Response Summary

Area Munition Response

Action Approximate Size (Acres)

Port Chicago Terrestrial

Explosion Area

Removal Action to Depth of Construction Footprint, and On-Site Construction Support

5,232

Port Chicago Water Explosion MRS

Removal Action to Depth of Construction Footprint, and On-Site Construction Support

5,081

1.6 Reason for Munitions and Explosives of Concern (MEC)

The site history in Section 1.3 provides the reason for MEC on the property.

1.7 Amount and Type of MEC

Details regarding the MGFDs selected for the MRSs are in paragraphs in section 1.4.2 above and Table 1-2.

Continued on following page.

Table 1-2 Type And Depth Of MEC Recovered

MRS MEC Recovered or Suspected

Maximum Depth of MEC Recovered or

Suspected

(Inches)

Maximum Geophysical

Detection Depth (inches Below

Ground Surface, (bgs))

Port Chicago Terrestrial

Explosion Area

MRS

5 in 38 Caliber Mk 35 Unknown 55

7.2-inch Hedgehog Projectile

Unknown 79

Port Chicago Water Explosion

Area MRS 5 in 38 Caliber Mk 35

Unknown 55

2.0 MAPS

Figure 1-1 shows a map of the site. Figures 3-1 and 3-2 show the MRSs and the Quantity Distance (Q-D) arcs that will be used during the Removal Action and Construction Support activities.

3.0 EXPLOSIVES SAFETY QUANTITY-DISTANCE (Q-D)

3.1 Munition with Greatest Fragmentation Distance (MGFD)

For Q-D purposes, the MGFD for the MRSs (see Table 3-1) where removal activities prior to pier construction and Construction Support for all on-going construction in the areas will occur has been established based on the historical data. Reports will be available on site. During the course of this Removal Action/Construction Support, if MEC with a greater fragmentation distance is encountered, the Minimum Separation Distances (MSDs) will be adjusted in accordance with DDESB Technical Paper 16 (TP 16), Revision 4, “Methodologies for Calculating Primary Fragment Characteristics” (a copy of this document will be available on site), operations will continue, and an amendment to this ESS will be submitted for approval.

Items with smaller fragmentation distances may be found. Demolition of these items may be done using the item-specific minimum separation distances and engineering controls in accordance with DDESB TP 16 Fragmentation Database. For items not in the DDESB TP 16 Fragmentation Database, the maximum fragment distance may be calculated in accordance with the generic equations in DDESB TP 16. (Note: the Generic Equation Calculator (GEQ) is available on the DDESB's secure website at http://www.ddesb.pentagon.mil/.)

3.2 MEC Area(s)

The MSD restrictions from MEC areas to non-essential personnel will be applied during all MEC operations. The MSDs identified by the US Army Engineering and Support Center, Huntsville (USAESCH) for the MRSs are presented in Table 3-1. Preliminary site work such as surveying, laying grid lanes and anomaly detection do not require the establishment of a MSD for Q-D purposes. Essential project personnel are defined as those on-site contractor and DoD personnel required to participate in the MEC removal/sampling, along with those approved and authorized visitors. All other personnel are non-essential personnel. The outer boundaries of the MSD arcs are depicted on the Q-D maps in Figures 3-1 and 3-2.

The team separation distance at this site during intrusive activities on land will be the K40. TP- 18 qualified Former Navy EOD Divers will be performing removal activities and construction support during in-water activities at the Port Chicago Water Explosion MRS, and only one dive team will be in the water during pier renovation/expansion within the Port Chicago Water Explosion Area MRS.

Positive control of the exclusion zone (EZ) based on the MSDs will be maintained at all times that MEC operations are being conducted. Prior to beginning MEC operations, the contractor will ensure that there are no non-essential personnel within the EZ and the contractor will ensure that the EZ remains clear of non-essential personnel throughout the MEC operations.

3.3 Construction Support

Only UXO-qualified personnel (see DDESB Technical Paper 18 for definitions) will perform MEC Construction Support and Removal Activities. Activities will be accomplished in accordance with the procedures detailed in USACE Engineering Manual (EM) 385-1-97 (including Change 1 and Errata sheets 1 through 6), “Explosives Safety and Health Requirements Manual”. The UXO personnel will clear all soil excavation locations to ensure there is no intentional physical contact with MEC during mechanized soil removal/excavation operations.

3.4 Demolition Explosives

3.4.1 Delivery on an As-Needed Basis

The Contractor will have donor explosives delivered on an as-needed basis. Total control of explosives will be maintained while the explosives are on site. Items requiring explosive demolition will be marked and guarded until explosives are delivered and the demolition accomplished. All vehicles transporting explosives will be properly inspected, equipped, and placarded prior to the loading of explosives onto the vehicle, and an “Explosives Motor Vehicle Inspection Checklist” completed. The contractor will not maintain control of any explosive storage magazines. There will be no explosives storage on site.

Table 3-1

Minimum Separation Distances (MSD)

Area MEC

MSD (ft)1 For Unintentional

Detonations For Intentional Detonations

Team Separation Distance

(K40)

Hazardous Fragment Distance

(HFD)

Without Engineering

Controls

Using Sandbag

Mitigation2

Using Water

Mitigation

Port Chicago Terrestrial Explosion Area MRS

5 in 38 Caliber Mk 35 74 343 2131 220 275

7.2 in Projector (Hedgehog) (Torpex filled) 140 413 1959 N/A N/A

Port Chicago Water

Explosion Area MRS

5 in 38 Caliber Mk 35 74 343 2131 220 275

Notes:

All Values in Bold Italics are the MSDs for unintentional detonations that must be used on-site for the Area.

1See Appendix B for calculation sheets documenting MSDs.

2 See Appendix B for required sandbag thickness (HNC-ED-CS-S-98-7) and water containment system (HNC-

ED-CS-S-00-3).

3.5 Planned or Established Demolition Areas

All intentional detonations of MEC will be conducted within each grid using Blow-in-place (BIP) procedures. However, acceptable to move MEC may be transported to an area within the MRS for disposal, after coordination with installation personnel. The contractor may use the Buried Explosion Module (BEM) (V6.3.2) to ensure the MSD from intentional detonations does not exceed the QD arcs for all intentional detonations.

3.5.2 Collection Points

Collection points are those areas used to temporarily accumulate MEC, determined to be acceptable to move by the Senior UXO Supervisor (SUXOS) and UXO Safety Officer (UXOSO), pending destruction at the end of the day using consolidated shots. 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”. 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 Hazardous Fragmentation Distance (HFD) for the area (see Table 3-1, footnote 1).

3.5.3 In-Grid Consolidated Shots

If determined acceptable to move by the SUXOS and UXOSO, consolidating multiple MEC within the MRS is anticipated for this project. 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 will be used and 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 MFD-H for the intentional detonation."

3.6 Maximum Credible Event (MCE)

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

Therefore, no MCE is calculated.

4.0 TYPES OF MEC

The expected MEC items are shown in Table 1-2.

5.0 START DATE

The estimated start date for the Removal Action in the Port Chicago Water Explosion Area MRS 30 August 2013, and Construction Support will be ongoing for both MRSs.

6.0 MEC MIGRATION

Due to the location of Concord, frost heave is not considered to be a concern. However, within the Port Chicago Water Explosion MRS, continuous erosion from currents can cause MEC to be shifted and/or exposed. However, detection equipment characteristics can be expected to consistently detect the MEC items shown in Table 1-2.

7.0 DETECTION EQUIPMENT AND RESPONSE TECHNIQUES

7.1 Removal Depth

The munitions response for the area is listed in Table 1-1.

7.2 Detection Equipment

The expected MEC for all MRSs are presented in Table 1-2, and are composed of ferrous casings that are easily detectable by a variety of geophysical instruments commonly used on MEC sites.

A combination of one or more of the following detection technologies will be used on land at this site. The same phenomenology of detection equipment is used for marine surveys as on land surveys with the exception that it is waterproofed and site conditions may reduce the detection depth. This is encountered in areas used for ocean harvesting (oyster beds, scallop beds, etc.)

where detectors are required to scan above the sea bottom rather than be dragged on the bottom, which raises the detector and reduces the detection depth by the same distance.

7.2.1 Analog Mag and Flag using Flux-Gate Magnetic Gradiometers Approved detectors for this project include Schondstedt 52-CX, Foerster Mk26/Ferex/DLG/multicat, Vallon EL1302D2 /1303D2 and MagnaTrak 102/202. All of these instruments have similar detection characteristics. Other similar geophysical instruments may be approved by demonstrating their detection capability on a Geophysical Prove-Out at the site with review and concurrence by the USAESCH Geophysical Subject Matter Expert.

7.2.2 Analog Mag and Flag using Electromagnetic Induction

Approved detectors for this project include the CEIA MIL-D1/DS/CMD, Schiebel AN-PSS 12, L-3 Cyterra PSS 14, Vallon VMX, Foerster Minex, White XLT, Fisher CZ-21, Garrett AML- 1000, and MineLabs ExplorerII and F3. All of these instruments have similar detection characteristics. However, unlike the other classes of instruments, their maximum effective depth detection limit is approximately 18 inches. Other similar geophysical instruments may be

7.2.3 Digital Geophysical Mapping Using Optically-Pumped (cesium vapor, potassium vapor, etc.) Magnetometry Approved detectors for this project include the Geometrics 822/ 823/858/882, Scintrex CS, GEM GSMP and GTL TM-4. All of these instruments have similar detection characteristics and can be expected to consistently detect the MEC items shown in Table 1-2 at their expected depths.

These detection depths are significantly deeper than the depths at which any MEC items were recovered during the EE/CA (see Table 1-2). Other similar geophysical instruments may be

7.2.4 Digital Geophysical Mapping Using Time-Domain Electromagnetic Induction Approved detectors for this project include the Geonics EM-61/EM-61MkII, GTL TM-5emu, Geometrics MetalMapper, TEMTADS, Battelle TEM-8, and Zonge Nanotem. All of these instruments have similar detection characteristics and can be expected to consistently detect the MEC items shown in Table 1-2 at their expected depths. These detection depths are significantly deeper than the depths at which any MEC items were recovered during the EE/CA (see Table 1- 2). Other similar geophysical instruments may be approved by demonstrating their detection capability on a Geophysical Prove-Out at the site with review and concurrence by the USAESCH Geophysical Subject Matter Expert.

7.3 Sweep Procedures

The UXO personnel operating detection equipment will demonstrate proficiency with the particular instrument(s) used before site investigations begin.

7.4 Exclusion Zone Control

Prior to initiation of on-site MEC operations, all nonessential personnel will be removed to a location outside the exclusion zone (EZ). Once MEC operation commences, positive control of the EZ will be maintained, and only essential personnel will be allowed inside the EZ. The Q-D arcs for the work areas are shown on Figures 3-1 and 3-2. During MEC operations, non-essential personnel (to include construction workers) will be prevented from entering the EZ on these roads or waterway by a combination of road closures and the use of spotters who will notify the UXO personnel to stop work when a vehicle approaches the EZ boundary. When an inhabited building is within the EZ of the day’s work area, the inhabitants will be provided protection by evacuation and/or the use of engineering controls. See Section 8.4 for discussion of EZ control for disposal.

7.5 Intrusive Activities

Non-Mechanized MEC Removal and identification of anomalies will be performed using the criteria and procedures outlined below. Only TP 18 qualified personnel will perform excavation and investigation of anomalies. To gain access to a subsurface anomaly, excavation will be initiated to the side of the anomaly, and will not be conducted directly over the anomaly until such time as the depth of the anomaly can be ascertained. Earth Moving Machinery (EMM) excavation of the soil overburden will be performed for anomalies deeper than 2 feet below ground surface for the purpose of removing overburden. However, the EMM will not be used within 12 inches directly over the anomaly. Additional excavation will be conducted with care using small hand tools only. A detailed accounting of all MEC located at each site will be made and maintained by the Senior UXO Supervisor (SUXOS). A log entry will be made for each MEC item indicating the item’s identity, its explosive hazards, location (x, y, and z measurements) and final disposition. All munitions debris excavated during this investigation will be removed from the site.

7.6 Quality Control and Quality Assurance

Quality Control of Construction/Removal Actions activities within each area will be performed in accordance with the approved Work Plans and QC plans for the project by the UXO Quality Control Specialist (UXOQCS). Any non-conformance to contractual requirements will be documented and reported in writing to the SUXOS, Quality Control Manager (QCM), and Project Manager (PM). The SUXOS will be responsible for the field remediation of the non-conformance. Quality Assurance will be provided by the on-site OESS.

8.0 DISPOSITION TECHNIQUES

8.1 Demolition Operations

For Land Based MEC operations, items requiring blow-in-place disposal, will be marked pending disposal. MEC items determined to be acceptable-to-move may be taken to collection points within the MRS for consolidated disposal. All explosive operations will be supervised by the SUXOS and coordinated with the US Army Corps of Engineers (USACE) Government OE Safety Specialist. All explosive operations will follow the procedures outlined in TM 60A-1-1- 31 and the EM 385-1-97 “Explosives - Safety and Health Manual” dated 15 September 2008.

Demolition operations will be performed daily or items properly marked and guarded until operations can be conducted.

For Water Based MEC operations, items requiring blow-in-place disposal, will be marked pending disposal. Those MEC items determined to be acceptable-to-move may be taken to collection points within the MRS for disposal. The method used to bring the items to the surface will vary from project to project, from floating, slinging, to ropes. It is not intended to have intentional physical contact with underwater MEC items, that have not been determined to be acceptable-to-move, occur. Should this become necessary, then an amendment to this ESS will be prepared to address those situations.

8.2 Explosive Storage, Accountability, and Transportation

Explosives will be delivered on an as needed basis. Total control of explosives will be maintained while the explosives are on site. All vehicles transporting explosives will be properly inspected, equipped, and placarded prior to the loading of explosives onto the vehicle, and DD Form 626 “Motor Vehicle Inspection” completed.

8.3 Engineering Controls

Sandbags (HNC-ED-CS-S-98-7, HNC Safety Advisory dated 7 November 2011, and the DDESB Memorandum “Clarifications Regarding Use of Sandbags for Mitigation of Fragmentation and Blast Effects due to Intentional Detonation of Munitions”, Nov. 29 2010) or Water Mitigation (HNC-ED-CS-S-00-3) may be used to reduce the intentional detonation MSD as shown in Table 7-1. In addition to Single Sandbag Mitigation, Double Sandbag Mitigation is approved for items up to and including 81 mm diameter munitions that do not exceed TNT NEW of 1.39 lbs. Tamping (single or multiple items) may be used in accordance with DDESB Technical Paper 16 and the Buried Explosion Module version 6.3.2. These reports will be on site for all mitigation methods used.

8.4 Disposal Shots

Prior to preparing MEC for detonation, all non-essential personnel will be evacuated from the EZ and will remain outside the EZ until all MEC operations are completed. While preparing MEC for detonation, the UXO Safety Officer (UXOSO) will ensure that the number of personnel on site is kept to the minimum required to safely accomplish the disposal mission. Authority to initiate demolition operations will rest solely with the SUXOS. The UXOSO will be responsible for ensuring all personnel have been accounted for and that the area is secure prior to authorizing the detonation of explosive charges. The SUXOS will ensure that the local Police and Fire Department are notified of an impending demolition shot.

8.5 Material Potentially Presenting an Explosive Hazard (MPPEH Procedures) All MPPEH procedures will be IAW DoDI 4140.62 and EM1110-1-4009. All 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 personnel as Material Documented as Safe (MDAS) after a 100% inspection and an independent 100% re-inspection to determine that it is safe from an explosives safety perspective.

9.0 ENVIRONMENTAL, ECOLOGICAL OR CULTURAL CONSIDERATIONS.

This is an area which has already been heavily developed. It is not anticipated that any environmental, ecological, or cultural considerations will be encountered. However, if issues regarding these considerations arise the appropriate agencies will be contacted for coordination.

10.0 TECHNICAL SUPPORT

10.1 Military Support

No chemical warfare materiel (CWM) is suspected at this site. However, if a munition with unknown filler is found, or if a MEC item cannot be positively identified, the installation point of contact (POC) will be notified of the hazard and requested to notify Explosive Ordnance Disposal (EOD) through their channels.

10.2 Contractor

All on-site UXO personnel will meet the training and minimum experience required by DOD, DDESB TP 18 and USACE.

11.0 RESIDUAL RISK MANAGEMENT

This section is not applicable.

12.0 UXO SAFETY EDUCATION PROGRAM

13.0 STAKEHOLDER INVOLVEMENT

14.0 CONTINGENCIES

None have been identified at this time.

A1

APPENDIX A

MAPS

6100000

6100000

6150000

6150000

Figure 1 - 1 Location Map

MOTCO

Concord, CA

O 0 1 2 3 4 5

Miles Coordinate System: NAD83 State Plane California III, Feet

Author: GDW Date Saved: 5/21/2013 12:00:12 PM Path: \\hnc-netapp2\DS1\ED\EDGIS\PROJECTS\States\CA\MOTCO\ArcData\Fig1 - 1_MOTCO_Location.mxd

Imagery: Sources: Esri, DeLorme, NAVTEQ, TomTom, USGS, Intermap, iPC, NRCAN, Esri Japan, METI, Esri China (Hong Kong), Esri (Thailand)

California

U.S. Army Engineering & Support Center Huntsville

DISCLAIMER- The data represent the results of data collection/processing for a specific U.S. Army Corps of Engineers activity and indicates the general existing conditions. As such, it is only valid for its intended use, content, time, and accuracy specifications. The user is responsible for the results of any application of the data for other than its intended purpose.

Legend

Installation Boundary

Tidal EOD MRS

6110000

6110000

6120000

6120000

6130000

6130000

6140000

6140000

Figure 3-1 Terestrial Explosion Area MRS

QD Arcs

O 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000

Feet Coordinate System: NAD83 State Plane California III,Feet

Author: GDW Date Saved: 5/21/2013 4:14:27 PM Path: \\hnc-netapp2\DS1\ED\EDGIS\PROJECTS\States\CA\MOTCO\ArcData\Fig3 - 1_MOTCO_QD.mxd

Imagery: Source: Esri, i-cubed, USDA, USGS, AEX, GeoEye, Getmapping, Aerogrid, IGN, IGP, and the GIS User Community

U.S. Army Engineering & Support Center Huntsville

DISCLAIMER- The data represent the results of data collection/processing for a specific U.S. Army Corps of Engineers activity and indicates the general existing conditions. As such, it is only valid for its intended use, content, time, and accuracy specifications. The user is responsible for the results of any application of the data for other than its intended purpose.

Legend Military Ocean Terminal, Concord, CA

Installation Boundary

Terrestrial Explosion Area MRS

QD Type, MSD Feet

Sandbag, 220 (5 in 38 cal. MK 35)

HFD, 413

MFD-H, 2131

6120000

6120000

6130000

6130000

6140000

6140000

Figure 3-2 Water Explosion Area MRS

QD Arcs

O 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000

Feet Coordinate System: NAD83 State Plane California III,Feet

Author: GDW Date Saved: 6/28/2013 2:26:43 PM Path: X:\PROJECTS\States\CA\MOTCO\ArcData\Fig3 - 2_MOTCO_QD.mxd

Imagery: Source: Esri, i-cubed, USDA, USGS, AEX, GeoEye, Getmapping, Aerogrid, IGN, IGP, and the GIS User Community

U.S. Army Engineering & Support Center Huntsville

DISCLAIMER- The data represent the results of data collection/processing for a specific U.S. Army Corps of Engineers activity and indicates the general existing conditions. As such, it is only valid for its intended use, content, time, and accuracy specifications. The user is responsible for the results of any application of the data for other than its intended purpose.

Legend Military Ocean Terminal, Concord, CA

Installation Boundary

Water Explosion Area MRS

QD Type, MSD Feet

Sandbag, 220

HFD, 343

MFD-H, 2131

B1

APPENDIX B

CALCULATION SHEETS

Munition Information and Fragmentation Characteristics

Theoretical Calculated Fragment Distances

Minimum Thickness to Prevent Perforation

Overpressure Distances

Sandbag and Water Mitigation Options

Fragmentation Data Review Form

Category: Surface-Launched HE Rounds

Munition: 5 in 38 Caliber Mk 35

Case Material: Steel, Mild

Secondary Database Category: Projectile

Munition Case Classification: Robust

DODIC:

Individual Last Updated Record: SDH

Explosive Type: Explosive D

Explosive Weight (lb): 7.55

Diameter (in): 5.0000

Maximum Fragment Weight (Intentional) (lb):

0.3380

Critical Fragment Velocity (fps): 3409

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

MFD-V [Maximum Fragment Distance, Vertical] (ft): 1613

MFD-H [Maximum Fragment Distance, Horizontal] (ft): 2131

Inhabited Building Distance (1.2 psi), K40 Distance: 74

Unbarricaded Intraline Distance (3.5 psi), K18 Distance: 33

Intentional MSD (0.0655 psi), K328 Distance: 610

4000 psi Concrete (Prevent Spall): 8.80

Mild Steel: 1.71

Hard Steel: 1.40

Aluminum: 3.37

LEXAN: 8.19

Plexi-glass: 6.62

Bullet Resist Glass: 5.85

Kinetic Energy 10⁶ (lb-ft²/s²): 1.9634

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): 275.000

Date Record Created: 1/11/2008

Last Date Record Updated: 9/14/2011

Date Record Retired:

Database Revision Date 4/16/2013

Intentional Unintentional

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

0.0667

4.49

1.79

0.87

0.71

5.49

3.26

3.89

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: 45

TNT Equivalent (Pressure): 0.85

TNT Equivalent Weight - Pressure (lbs): 6.418

Item Notes

TNT Equivalent (Impulse): 0.81

TNT Equivalent Weight - Impulse (lbs): 6.116

Cylindrical Case Weight (lb): 29.81237

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: Per V5.E3.2.2.1 of DoD 6055.09-M the minimum sited K328 distance may be no smaller than 200 ft.

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.

Munition Information and Fragmentation Characteristics

Theoretical Calculated Fragment Distances

Minimum Thickness to Prevent Perforation

Overpressure Distances

Sandbag and Water Mitigation Options

Fragmentation Data Review Form

Category: Surface-Launched HE Rounds

Munition: 7.2 in Projector (Hedgehog) (Torpex filled)

Case Material: Steel, Mild

Secondary Database Category: Projectile

Munition Case Classification: Non-Robust

DODIC:

Individual Last Updated Record:

Explosive Type: Torpex

Explosive Weight (lb): 35

Diameter (in): 7.2000

Maximum Fragment Weight (Intentional) (lb):

0.1260

Critical Fragment Velocity (fps): 8245

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

MFD-V [Maximum Fragment Distance, Vertical] (ft): 1565

MFD-H [Maximum Fragment Distance, Horizontal] (ft): 1959

Inhabited Building Distance (1.2 psi), K40 Distance: 140

Unbarricaded Intraline Distance (3.5 psi), K18 Distance: 63

Intentional MSD (0.0655 psi), K328 Distance: 1150

4000 psi Concrete (Prevent Spall): 18.25

Mild Steel: 2.96

Hard Steel: 2.42

Aluminum: 5.92

LEXAN: 10.43

Plexi-glass: 9.09

Bullet Resist Glass: 8.02

Kinetic Energy 10⁶ (lb-ft²/s²): 4.2828

Required Wall & Roof Thickness (in) Not Permitted

Expected Max. Throw Distance (ft): Not Permitted

Minimum Separation Distance (ft): Not Permitted

Water Containment System: Not Permitted

Minimum Separation Distance (ft): Not Permitted

Date Record Created: 7/20/2011

Last Date Record Updated:

Date Record Retired:

Database Revision Date 4/16/2013

Intentional Unintentional

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

0.0142

7.31

2.63

1.24

1.02

6.12

3.66

4.48

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: SDH

Public Traffic Route Distance (2.3 psi); K24 Distance: 84

TNT Equivalent (Pressure): 1.23

TNT Equivalent Weight - Pressure (lbs): 43.050

Item Notes

TNT Equivalent (Impulse): 1.28

TNT Equivalent Weight - Impulse (lbs): 44.800

Cylindrical Case Weight (lb): 23.73285

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: Per V5.E3.2.2.1 of DoD 6055.09-M the minimum sited K328 distance may be no smaller than 200 ft.

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.