update on the remedial action at the wood hollow training area mrs november 6, 2014 jeff fitzmayer...

Military Munitions Response Program

Utah National Guard

Update on theRemedial Action at the Wood

Hollow Training Area MRS

November 6, 2014

Jeff FitzmayerParsons

Utah National Guard MMRP Camp Williams, Utah

Update on the MEC removal project at the Wood Hollow MRS• Field Operations

• Status summary report—What has been accomplished thus far

• MEC and MD findings

• Discussion on path forward for the project

AGENDA

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Objective: Conduct surface and subsurface clearance of MEC to a depth of 2 feet below ground surface (bgs)

FIELD WORK ACTIVITIES AT WOOD HOLLOW MRS

¯N

Wood HollowTCRA

Area Disturbed by Mining Area Disturbed

by Mining

Area Disturbed by Mining

Camp Williams Installation

Mountain View Corridor

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SURVEYING


N

= 100 ft by 100 ft grids

Wood Hollow TCRA

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BRUSH REMOVAL

Brush removal within Wood Hollow

Brush was cut to leave approximately 6 inches of the main stem remaining above the ground surface.

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DIGITAL GEOPHYSICAL MAPPING (DGM)A Geophysical Prove-Out (GPO) was conducted to test the capabilities of the hand-held F3 electromagnetic sensor (F3 UXO-DGM) and to compare it to the EM61.

The F3 UXO-DGM is the more suitable geophysical sensor.• Lighter and more easily carried over rough terrain.• Has ground balancing circuitry which significantly reduces background noise.

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EM61 Deployed in Stretcher ModeF3 Electromagnetic Sensor


EM61 VS. F3 UXO-DGM

EM61-Mk2, in Stretcher Mode;Abundant geologic interference/clutter

F3 UXO-DGM: Ground-balancing capability greatly reduces interference

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Line Spacing = 2 ft

UXO Escort

DGM Operator

Hand-held F3

RTK GPS

DIGITAL GEOPHYSICAL MAPPING (DGM)1,058 grids have undergone DGM surveying

100 ft x 100 ft Grid

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Anomaly map

Background Conditions = GreenAnomaly = Pink/Red

DATA PROCESSING

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Most QC seeds detected (87%), but a concerning amount were not.

Attributed to the way the F3 responds to some buried metal, and the way the DGM data was being processed.o RESULT: All DGM data required

reprocessing and picking of targets.

530 grids have been processed using the revised method

DGM data processing operations are 50-percent complete.

Utah National Guard MMRP Camp Williams, Utah 10

ANOMALY DENSITYAS OF OCTOBER 22, 2014

•Approximately 69,000 targets within the Wood Hollow MRS Boundary

• Approximately 349 anomalies per acre

¯

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INTRUSIVE INVESTIGATION

Three to four dig teams utilized

Use the F3 for reacquisition

30,358 targets have been intrusively investigated

Intrusive investigation operations are 40-percent complete

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ANALOG DETECTION SURVEYSi.e., “mag and dig”

Analog (so called “mag and dig”) surveys were performed in areas where terrain conditions were hazardous for DGM crews, or where site conditions rendered DGM unsuitable (e.g., bedrock outcrops, along fence lines or near other metallic cultural features).

600 “mag and dig” targets have been intrusively investigated

Analog detection surveys are 50-percent complete

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QUALITY CONTROL (QC) The UXO Quality Control Specialist (UXOQCS) conducts audits and inspections of work

processes, records, and procedures.o Ensures all project activities are in compliance with approved plans and procedures.

Daily checks on the equipment to ensure proper operation and function. Blind seeding of DGM grids and analog Mag and Dig Areas. Check a subset of all targets investigated in the grid (10%) to ensure they have been

adequately resolved. 164 grids have passed QC; 16-percent complete. UXOQCS notifies the Government Representative of grids available for Quality Assurance

(QA) checks.

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QUALITY ASSURANCE (QA) Government conducts their own independent QA on

the project Government conducts its own blind seeding of the

grids (locations and types of seeds unknown) Government performs at least 10% field check of all

single point DGM anomalies and 10% of analog “Mag and Dig” areas, and reviews all DGM data and dig results.

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Utah National Guard MMRP Camp Williams, Utah14

1000 Ft.

SUMMARY OF WORK COMPLETED AND MEC FOUND DURING REMEDIAL ACTION ACTIVITIES

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Legend100 x 100 Ft. Grids

MRS Boundary

MEC

DGM Operations Complete

Ongoing Intrusive Investigations

Analog “Mag and Dig” areas

No MEC Clearance Operations:Mining disturbed land; road construction

QC Operations Complete

N


MEC Type Quantity Found Percentage Max. Depth

Projectile, 75mm Shrapnel, Mk I 38 76% 18”0

Projectile, 75mm HE, Mk I 8 16% 24”

Projectile, 37mm LE, Mk I 3 6% 1”

Booster, Fuze, 75mm, Shrapnel, MK I 1 2% 4”

Total 50

75mm Shrapnel, Mk I 75mm HE, Mk I 37mm LE, Mk I

MEC: TYPES AND QUANTITIES FOUNDAS OF OCT. 22, 2014

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Legend100 x 100 Ft. Grids

MRS Boundary

MEC

DGM Operations Complete

Ongoing Intrusive Investigations

Analog “Mag and Dig” areas

No MEC Clearance Operations:Mining disturbed land; road construction

MD

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QC Operations Complete

N

SUMMARY OF WORK COMPLETED AND MD FOUND DURING REMEDIAL ACTION ACTIVITIES

1000 Ft.

Utah National Guard MMRP Camp Williams, Utah 1775mm shrapnel balls and fragments M74 CS grenade

Types and Quantity of MD

Artillery Related (dominant type): Associated with 75mm and 37mm projectiles. Includes fragments, shrapnel balls, pusher plates, flash tubes, rotating bands, and fuzes.

Infantry Related (very minor): CS grenade, 35mm practice rockets, 81mm training mortar (plaster?), small arms ammunition casings, links, and clips.

Quantities: Over 19,600 MD items recovered to date.

M73 35mm practice rocket

MUNITIONS DEBRIS FOUNDAS OF OCT. 22, 2014

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Depth Range: Surface to >24 inches;1 MD item found at 36”

96-percent of all MEC/MD found at depths of 4” or less

Max Depth of MEC: 24 inches (1 occurrence)

17%

0.5 % <0.5 %3 %

79%

Depths of MEC/MD

DEPTHS OF MEC AND MD FOUNDAS OF OCT. 22, 2014

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Reprocess all previously processed data using the revised DGM processing approach

Complete intrusive investigations of all grids and anomalies generated from new DGM processing method.

Resurvey TCRA area with F3, use new processing method and conduct intrusive investigations on all new anomalies.

Conduct MEC clearance activities for areas outside of, but contiguous to the MRS.

Perform step-out investigations beyond the current MRS boundary in areas where MEC or MD has been found near the MRS boundary.

Mine personnel have indicated the presence of 75mm casings on adjacent parcels; therefore, perform DGM transect survey in the these outlying areas.

THE PROJECT MOVING FORWARD


N

1000 Ft.Camp Williams Installation

Notch and Slivers Clearance Areas

Far Outlying Investigation Areas

Time-Critical Removal Action (TCRA) Area

Step-Out Investigation Area Transects

Legend


Wood Hollow Munitions Response Site Boundary

THE PROJECT MOVING FORWARDOVERVIEW

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N

TCRA

Step-out Investigation Area




Notch and Slivers

Notch and Slivers Clearance Areas


Time-Critical Removal Action (TCRA) Area

Step-Out Investigation Area Transects

Legend


Wood Hollow Munitions Response Site Boundary

1000 Ft.

THE PROJECT MOVING FORWARDCLOSE-UP

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Far Outlying Investigation Area – PHASE 2

Far Outlying Investigation Area – PHASE 1

Acreage for each area:Block A = 69.5 acresBlock B = 298.5 acresBlock C = 79.4 acresBlock D = 260.7 acresBlock E = 267.3 acresBlock F = 285.7 acres

N

N

NPhase 1 Transects

Phase 2 Transects

Legend


1000 Ft.

1000 Ft.

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WHAT’S NEXT The density and the extent of MEC and MD at Wood Hollow is greater

than previously thought.

The MEC/MD removal project is not complete and additional work needs to be done.

Work in 2015 will focus on

1. Removing the remaining MEC/MD from the original site, and from areas immediately surrounding the original site.

2. Investigating far outlying areas to determine the extent of MEC/MD in areas not previously suspected to be contaminated.

3. Planning the removal of MEC/MD in any far outlying areas where MEC/MD is found.

The schedule for removal of MEC/MD from far outlying areas will be better known once the 2015 work is completed.

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Oct. 22, 2014 - Field personnel at Wood Hollow packed up equipment and demobilized

April 13, 2015 - Field operations will resume Field activities will begin in the TCRA and outer

contiguous clearance areas. A DGM transect survey and intrusive investigations will

be conducted in the step-out investigation area. A DGM transect survey and intrusive investigations will

be conducted in the far outlying investigation area Summer/Fall 2015 - Revised MRS boundary established for

additional MEC/MD clearance operations

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SCHEDULE


QUESTIONS/DISCUSSION

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update on the remedial action at the wood hollow training area mrs november 6, 2014 jeff fitzmayer...

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