Tobyhanna Army Depot Epa Id: Pa5213820892 Ou 04 Tobyhanna, Pa 09/19/2000 Record of Decision Tobyhanna Army Depot
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EPA/ROD/R03-00/018 2000 EPA Superfund Record of Decision: TOBYHANNA ARMY DEPOT EPA ID: PA5213820892 OU 04 TOBYHANNA, PA 09/19/2000 RECORD OF DECISION TOBYHANNA ARMY DEPOT DECLARATION SITE NAME AND LOCATION Tobyhanna Army Depot Operable Unit #4 Coolbaugh Township Monroe County, Pennsylvania CERCLIS ID#_ PA5213820892 STATEMENT OF BASIS AND PURPOSE This Record of Decision (ROD) presents the selected remedial action for Operable Unit Four (OU-4) at the Tobyhanna Army Depot in Coolbaugh Township, Monroe County, Pennsylvania (the "Site"), chosen in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) of 1980, as amended, 42 U.S.C. §9601 et seg. and, to the extent practicable, the National Oil and Hazardous Substances Pollution Contingency Plan (NCP), 40 C.F.R. Part 300. This decision is based on the Administrative Record for this Site. The Commonwealth of Pennsylvania Department of Environmental Protection (PADEP) concurs with the selected remedy. The concurrence letter from the Commonwealth is contained in the Site Administrative Record. ASSESSMENT OF THE SITE If not addressed by implementation of the remedy selected in this ROD, the site identified in this ROD may present an imminent and substantial endangerment to public health and welfare, or the environment. DESCRIPTION OF THE SELECTED REMEDY OU #4, also referred to as Area of Concern (AOC) #55, consists of a former artillery range that was used during World Wars I and II. There is a potential that unexploded ordnance (UXO) is present at OU-4; the UXO presents a threat to public 1 health and safety. The objectives of the selected remedy for OU-4 are as follows: to restrict access to UXO areas by onsite personnel or trespassers; ensure that proper clearance procedures are followed if or when any portion of the area is to be developed by the Army in the future; restrict future uses of the land; and educate the public/employees on the dangers of coming into contact with UXO. The selected remedy for OU-4 is the recommended alternative identified in the Proposed Remedial Action Plan dated June 24, 2000. That alternative is institutional controls. The components of this remedy include: Physical Controls - Maintenance of the barbed wire fence and 40 signs posted around-the perimeter of OU-4. Security Patrols/Monitoring - Increased security patrols to minimize the number of willful trespassers onto OU-4, especially during periods of increased pedestrian activity (e.g., hunting season). UXO Support - Use of Explosives Ordnance Disposal (EOD) trained personnel to provide support in the case that any future intrusive activities by the Army take place within OU-4. This requirement will be incorporated into the base Master Plan. Proprietary Controls - Deed restrictions on the land if it is ever transferred outside the government. Public/Employee Education - Informing the public and Tobyhanna Army Depot (TYAD) employees of the dangers of contact with potential UXO. Periodic Review - In accordance with CERCLA, a review at a minimum of every five years to determine the effectiveness of the remedy. Previous response actions have been selected and/or implemented to address Operable Unit One, which consists of contaminated groundwater attributable to AOCs #4 and #7, Operable Unit Two, which consists of a former PCB transformer substation, and Operable Unit Three, which consists of two former hazardous waste storage buildings. 2 STATUTORY DETERMINATIONS The selected remedy is protective of human health and the environment, complies with Federal and State requirements that are applicable or relevant and appropriate to the remedial action, is cost-effective and utilizes permanent solutions to the maximum extent practicable. The remedy for OU-4 does not satisfy the statutory preference for treatment as a principal element of the remedy due to the cost-prohibitive nature and issues with implementability of treatment alternatives that would satisfy the statutory preference. The Army and EPA, with the concurrence of PADEP, believe that the selected remedy provides the best balance of trade-offs among the alternatives with respect to the response criteria. 3 RECORD OF DECISION TABLE OF CONTENTS SECTION PAGE I. SITE NAME, LOCATION, DESCRIPTION 7 II. SITE HISTORY 9 III. HIGHLIGHTS OF COMMUNITY 10 PARTICIPATION IV. SCOPE AND ROLE OF THIS RESPONSE 11 ACTION V. SUMMARY OF SITE CHARACTERISTICS/ EXTENT OF CONTAMINATION 12 VI. CURRENT AND POTENTIAL FUTURE LAND 15 USES VII. SUMMARY OF SITE RISKS 16 VIII. REMEDIAL ACTION OBJECTIVES 18 IX. DESCRIPTION OF ALTERNATIVES 19 X. COMPARATIVE ANALYSIS OF 24 ALTERNATIVES XI. PRINCIPAL THREAT WASTES 29 XII. SELECTED REMEDY 30 XIII. STATUTORY DETERMINATIONS 33 XIV. DOCUMENTATION OF SIGNIFICANT 35 CHANGES XV. RESPONSIVENESS SUMMARY 35 ATTACHMENTS NUMBE PAGE R 1 Glossary of Terms 38 2 Risk Assessment Procedures 40 4 FIGURES NUMBE PAGE R 1 Tobyhanna Army Depot Site 49 Location Map 2 Location of Radar Test Facility 50 3 Location of Fence Line 51 4 Surface Drainage Map 52 5 Firing Range Map 53 List of Acronyms and Abbreviations AMC U.S. Army Materiel Command AOC Area of Concern ARARs Applicable or Relevant Appropriate Requirements Bgs Below Ground Surface Level CERCLA Comprehensive Environmental Response, Compensation, and Liability Act CFR Code of Federal Regulations DoD Department of Defense EE/CA Engineering Evaluation/Cost Analysis EMD Tobyhanna Army Depot Environmental Management Division EOD Explosive Ordnance Disposal FFA Federal Facility Agreement FUDS Formerly-Used Defense Site HE High Explosives HFA Human Factors Applications, Inc. HQDA Headquarters, Department of the Army NCP National Oil and Hazardous Substance Pollution Contingency Plan NFA No Further Action OE Ordnance and Explosives O&M Operation and Maintenance OU Operable Unit PCB Polychlorinated Biphenyls RAB Restoration Advisory Board RAC Risk Assessment Code ROD Record of Decision SARA Superfund Amendments and Reauthorization 5 Act of 1986 TBC To Be Considered TYAD Tobyhanna Army Depot USACE U.S. Army Corps of Engineers USEPA U.S. Environmental Protection Agency UXO Unexploded Ordnance 6 RECORD OF DECISION TOBYHANNA ARMY DEPOT DECISION SUMMARY I. SITE NAME, LOCATION, AND DESCRIPTION Tobyhanna Army Depot (TYAD) is located in Monroe County, Pennsylvania, approximately 15 miles southeast of Scranton, Pennsylvania, adjacent to the Village of Tobyhanna (Figure 1). The National Superfund electronic database identification number is PA5213820892. TYAD was initially established as Camp Summerall when the United States purchased 33 square miles of land in northeastern Pennsylvania in 1909. The name of the installation, as well as its mission, has changed throughout the years. The area was used by the Army and National Guard for machine gun and field artillery training beginning in 1913, and later was renamed Tobyhanna Military Reservation. The reservation became an ambulance and tank regiment training center and an ordnance storage depot during World War I. The installation was deactivated after World War I and remained inactive until 1932 (USATHAMA, 1980). However both regular Army and National Guard Field Artillery units trained at Tobyhanna during its supposedly deactivated period. From 1919 to 1932, it was the only site in Pennsylvania where live cannon fire was permitted. From 1932 to 1938, the Civilian Conservation Corps used the area as a camp. From 1938 to 1941, cadets from West Point used the area for field artillery training. In 1942, the installation was reactivated as an Army/Air Force Service Unit Training Center. The area was also converted to a storage and supply area for gliders and other equipment of the Air Service Command in 1944. Tobyhanna continued to be used as an artillery range from 1942 to 1946 (USACE 1995). The installation was deactivated after World War II. In 1949, the Commonwealth of Pennsylvania purchased approximately 21,000 acres from the United States War Assets Administration; from 1949 to 1951 that property was maintained 7 by the Pennsylvania Department of Forests and Waters and the Pennsylvania Game Commission. In 1952, approximately 1,293 acres were obtained by means of a quitclaim deed from the Commonwealth by the United States government for depot construction. The balance of the original 21,000-acre tract remained State-owned and today is largely State game lands and parks. In 1953, the installation was designated and established as Tobyhanna Signal Depot, a Class II installation, with an assigned supply mission. In 1962, Tobyhanna Signal Depot was transferred to the United States Army Material Command (AMC). Since 1962, the installation has been used for a variety of purposes including the Department of Defense household goods movement and storage and maintenance of the Army's central file of motion pictures and distribution of audio-visual materials. The current function of TYAD is as a communication- electronics maintenance and supply depot specializing in the design, fabrication, repair, and modification of a wide range of communications and electronics systems. These systems, which range in size from hand-held radios to satellite communications ground terminals, are associated with navigation, aircraft survivability, surveillance, and electronics warfare. On July 14, 1989, the Tobyhanna Army Depot (TYAD) was proposed for inclusion to the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) National Priorities List (NPL), and subsequently added to the final NPL on August 30, 1990. The Department