enhanced historical installation assessment
TRANSCRIPT
Enhanced Historical Installation Assessment
Volunteer Army Ammunition Plant
Chattanooga, TN
Environmental Research and Mapping Facility Division of Superfund
Overview
Ammunition Plant Background Regulatory/Remediation Needs GIS Solution Benefits from Project
Volunteer Army Ammunition Plant Background
• Facility: approximately 6,681 acres in Chattanooga, Hamilton County, Tennessee
• 10 miles northeast of Chattanooga business district
• 60 % of facility is forested
• 40 % improved and/or semi-improved
• 83 miles of roadway and rail onsite
2,4,6-trinitrotoluene (TNT)
Toluene a product of fossil fuel refining, was converted to TNT through a nitration process using nitric and sulfuric acid. These acids were produced onsite.
Site History
1942-1943: facility constructed 1942-1945: 800 million lbs. of TNT produced
(WWII) 1953-1957: 283 million lbs. TNT produced
(Korean War) 1965-1977: 1.8 billion lbs of TNT produced
(Vietnam Conflict)
Site History Continued
1977: TNT production discontinued 1962-1982: private industries leased sections
of the plant for ammonium nitrate production Total TNT produced: ~ 3 billion pounds
Environmental Concern
Three major categories of Environmental Concern
1) TNT related pollutants and wastes
2) Acid manufacturing byproducts and wastes
3) Miscellaneous wastes chemicals generated by plant operation
Complex Distribution of Contaminants of Concern (COCs)
Explosives (DNT, TNT, etc) Metals (As, Lead, Vanadium Pentoxide) Polynuclear Aromatic Hydrocarbons (PAH),
polychlorinated biphenyls (PCB), Volatile Organic Compounds (VOC), Semi Volatile Organic Compounds (SVOC), and Total Petroleum Hydrocarbons (TPH)
Environmental Areas of Concern (AOCs)
• 1 TNT Production Area • 5 Landfill/Disposal Areas • 3 Acid Areas and 3 Storage Areas• 1 Spill Site and 1 Burn Area• 1 Pistol Range and 2 Facility Areas
Regulatory History
1985 Site promulgated as Superfund site through the Tennessee Department of Environment and Conservation (TDEC)
2001 the United States Environmental Protection Agency (EPA) issues Resource Conservation and Recovery Act (RCRA) order for facility.
Multi- Agency Management
2000, Tier 1 Team established to oversee investigations, cleanups, and property transfers
Reuse or Restoration of property “The Bottom Line”
Team composed of federal, state, local, and private agencies and organizations: >10 representatives
Tier I Team Needs
Coordination of information and idea exchange between agencies and organizations
Unified site management system An inventory of existing data A means for identifying AOCs
Team Limitations due to lack of Technology
Hardware and software discrepancies between team members
Certain materials not available to all team members due to physical limitations:
Only 1 available copy of a 1984 report produced by the Environmental Photographic Interpretation Center (EPIC) of EPA
The GIS Solution
March of 2002 TDEC begins effort to create standardized digital environmental management system
All Tier I team partners would gain access to this system
Project Challenges
System must be simple enough for non-GIS professionals to use
However data must be available for complex analysis
Hardware for digitization and GIS product deliverables scattered among 3 entities
(limited local technology budgets)
Project Approach
Survey of all pertinent datasets Development of a present-day basemap layers Incorporation of selected datasets Digitization, rectification, and inclusion of
historical aerial photographs, mylar overlays,
Digitization Process
Hard copy photographs and mylar overlays scanned and saved in .tiff format using ANAtech Evolution Pro
Images georeferenced and rectified using ArcInfo Workstation 8.x
Shapefiles produced from digitized mylar overlays for AOCs using hand-to-screen digitization method
Deliverables
An interactive autorun application used to install, launch, and run projects
Projects saved in ArcExplorer 2 disks included: applications, shapefiles,
existing assessment reports, links, and the entire digitized EPIC study
Benefits to Installation Restoration Program (IRP)
Relationship fostered between agencies by a dynamic data exchange
Distribution of standardized data Powerful tool for inventory and assessment of
AOCs Enormous savings
Facilitation of Property Transfer
Reuse of property “The Bottom Line” GIS used to locate “clean” areas for transfer
Example: scanned 8 ½” x 11” fax digitized, rectified, and used with historical photography to ID underground storage tanks (USTs) on day of property transfer to county
Savings Analysis
An estimated 10 years of regulatory process saved by identification of “hot spots” using aerial photography
Savings for this regulatory reduction estimated at $300,000
Market-based cost for GIS deliverables: $50,000
Actual costs to TDEC: ~ $4,000
Next for VAAP
2002 Transfer of 285 acres Formation of “Enterprise South” a City and
County redevelopment initiative