FIRING RANGE ENVIRONMENTAL IMPACT - A CASE STUDY OF CAMP EDWARDS, MA - - PowerPoint PPT Presentation

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FIRING RANGE ENVIRONMENTAL IMPACT - A CASE STUDY OF CAMP EDWARDS, MA - - PowerPoint PPT Presentation

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FIRING RANGE ENVIRONMENTAL IMPACT - A CASE STUDY OF CAMP EDWARDS, MA Jay Clausen, AMEC Marc Grant, AMEC Ben Gregson, MAARNG Presented at Geological Society of America National Meeting. November 1-10, 2001. Boston, MA, (IAGWSPO Contact Ben

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SLIDE 1

FIRING RANGE ENVIRONMENTAL IMPACT - A CASE STUDY OF CAMP EDWARDS, MA

Jay Clausen, AMEC Marc Grant, AMEC Ben Gregson, MAARNG

Presented at Geological Society of America National Meeting. November 1-10, 2001. Boston, MA, (IAGWSPO Contact Ben Gregson 508-968-58210).

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SLIDE 2

Introduction

  • Military training ranges under scrutiny

– Potential impacts to ecology and environment – Complex issues and problems

  • Major ranges receiving attention

– Camp Edwards (MMR), MA - ARNG – Noman Island, MA – Vieques, Puerto Rico - U.S. Navy

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SLIDE 3

Camp Edwards - Site History

  • Training and Impact Areas used since 1911
  • Designed to house 30,000 troops during WWII
  • USEPA banned training

in 1997 through an administrative order

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SLIDE 4

Site Lithology

Legend

VC Sand & Gravel F Sand & Silt Till Bedrock Water Table Well Screen

ELEVATION IN FEET (MSL)

  • 100
  • 50

50 100 150 200

Sea Level

Aquifer Unsaturated Zone

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SLIDE 5

Hydrogeologic Model

  • Groundwater flow is

radial with the mound to the southeast of the Impact Area in the J Range Area

  • Groundwater flow is

approximately one foot per day

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SLIDE 6

Specific Areas of Investigation

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SLIDE 7

Surface Soil Findings (explosives)

TNT 6.3% RDX 37.0% HMX 20.3% 2,4-DNT 1.3% aDNTs 32.3% Other 2.7%

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SLIDE 8

Soil Results (explosives)

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SLIDE 9

Soil Results at Artillery Target 42

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SLIDE 10

Other Soil Results

  • Elevated metals evident (0 – 3 inches below ground

surface)

  • Al, Fe, Mo
  • PAHs present
  • PCNs?
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SLIDE 11

Groundwater Findings (explosives)

RDX 65.7% HMX 21.9% aDNTs 12.4%

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SLIDE 12

Plan View of RDX Detections in the Impact Area

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SLIDE 13

Inner Groundwater Transect within the Impact Area

210 160 110 60 10

  • 40
  • 90
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SLIDE 14

Longitudinal Cross-Section through the Impact Area

210 160 110 60 10

  • 40
  • 90
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SLIDE 15

Location of Perchlorate In Groundwater at MMR

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SLIDE 16

Potential Source Area

  • High-order

detonations

  • Low-order

detonations

  • UXO
  • EOD activities

at the J Range

  • Disposal/Burial

sites

  • Washout
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SLIDE 17

Conclusions

  • RDX and HMX present in surface soil adjacent to

artillery and mortar targets

  • RDX and HMX present in groundwater downgradient
  • f primary target area (i.e. Tank Alley) within the

Impact Area

  • TNT which is a component of the munitions appears

to be degraded before reaching groundwater

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SLIDE 18

Conclusions (cont.)

  • Training using HE artillery and mortar rounds (UXO,

detonation, or both) appears to have resulted in an explosive impact to groundwater at MMR

  • Some metals, PAHs, and pesticides/herbicides present

in surface soil but no evidence of impacts to groundwater

  • PCNs may be an issue for soil and perchlorate may be

an issue for groundwater

  • MMR findings are potentially applicable to other bombing

ranges and battlefields