update on the remedial action at the wood hollow training area mrs november 6, 2014 jeff fitzmayer...
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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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Utah National Guard MMRP Camp Williams, Utah
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
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Wood HollowTCRA
Area Disturbed by Mining Area Disturbed
by Mining
Area Disturbed by Mining
Camp Williams Installation
Mountain View Corridor
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Utah National Guard MMRP Camp Williams, Utah
SURVEYING
Camp Williams Installation
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= 100 ft by 100 ft grids
Wood Hollow TCRA
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Utah National Guard MMRP Camp Williams, Utah
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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Utah National Guard MMRP Camp Williams, Utah
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
Utah National Guard MMRP Camp Williams, Utah
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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Utah National Guard MMRP Camp Williams, Utah
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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Utah National Guard MMRP Camp Williams, Utah
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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Utah National Guard MMRP Camp Williams, Utah
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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Utah National Guard MMRP Camp Williams, Utah
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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Utah National Guard MMRP Camp Williams, Utah
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
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Utah National Guard MMRP Camp Williams, Utah 15
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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Utah National Guard MMRP Camp Williams, Utah16
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
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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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Utah National Guard MMRP Camp Williams, Utah 18
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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Utah National Guard MMRP Camp Williams, Utah19
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
Utah National Guard MMRP Camp Williams, Utah
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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
Camp Williams Installation
Wood Hollow Munitions Response Site Boundary
THE PROJECT MOVING FORWARDOVERVIEW
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Utah National Guard MMRP Camp Williams, Utah 21
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TCRA
Step-out Investigation Area
Camp Williams Installation
Step-out Investigation Area
Step-out Investigation Area
Notch and Slivers
Notch and Slivers Clearance Areas
Far Outlying Investigation Areas
Time-Critical Removal Action (TCRA) Area
Step-Out Investigation Area Transects
Legend
Camp Williams Installation
Wood Hollow Munitions Response Site Boundary
1000 Ft.
THE PROJECT MOVING FORWARDCLOSE-UP
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Utah National Guard MMRP Camp Williams, Utah 22
Step-out Investigation Area
Step-out Investigation Area
Step-out Investigation Area
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
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NPhase 1 Transects
Phase 2 Transects
Legend
Far Outlying Investigation Areas
1000 Ft.
1000 Ft.
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Utah National Guard MMRP Camp Williams, Utah
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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Utah National Guard MMRP Camp Williams, Utah
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