Bangor Dow AFB SI-FTA-SY-Lft 090194.Pdf
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14,9 FINAL SiTh INSPECTION REPORT for FORMER DOW MR FORCE BASE (BANGOR INTERNATIONAL AIRPORT) FIRE TRAINING ARE, LANDFILL, SALVAGE YARD BANGOR, MAINE PROJECT NO. DOIME000402 ff.9 ff9 P9 Prepared by: U.S. Army Corps of Engineers New England Division Waltham, Massachusetts SEPTEMBER 1994 •TABLE OF CONTENTS Page SUMMARY OF FINDINGS 1 1.0 EXECUTIVE SUMMARY 3 1.1 OBJECTIVES AND SCOPE 3 1.2 SITE HISTORY 3 1.2.1 Former Dcw Army Airfield 1.2.2 Areas of Potential Contamination 1.2.3 Study Investigations 1.3 GEOLOGY AND GROUNDWATER 4 1.4 INVESTIGATIONS FOR SITE INSPECTION 4 ffmrl 1.4.1 Fire Training Area and Adjacent Sites 1.4.2 Landfill Area 1.4.3 Former Salvage Yard 1.5 RESULTS OF LABORATORY ANALYSES 6 1.5.1 Fire Training Area and Adjacent Sites 1.5.2 Landfill Area 1.5.3 Salvage Yard Mc) 1.6 CONCLUSIONS 7 1.6.1 Fire Training Area and Adjacent Site 1.6.2 Landfill Area fm,1 1.6.3 Salvage Yard 1.7 RECOMMENDATIONS FOR FUTURE INVESTIGATIONS 8 1.7.1 General 1.7.2 Fire Training Area and Adjacent Sites 1.7.3 Landfill Area 1.7.4 Salvage Yard 1.7.5 Other Area s 2.0 INTRODUCTION 10 2.1 BACKGROUND 10 f"E\ 2.1.1 Dow Airfield History 2.1.2 Areas of Potential Contamination 2.2 STUDY OBJECTIVES 11 2.3 GENERAL GEOLOGY AND GROUNDWATER 11 2.3.1 Surficial Geology 2.3.2 Bedrock Geology 2.3.3 Groundwater 3.0 FIRE TRAINING AREA AND ADJACENT SITES 13 3.1 BACKGROUND AND PRIOR USE 13 3.1.1 Background 3.1.2 Fire Training Area (FTA) 3.1.3 POL Area and Dump Site 3.1.4 Defoliated Site 3.1.5 Tetraethyl Lead/Trichloroethylene Spill Areas 3.1.6 Buried F-101 Airplane 3.1.7 Underground Storage Tank PM') 3.2 TOPOGRAPHY AND GEOLOGY 14 TABLE OF CONTENTS (CONT'D) Page 3.3 SITE DESCRIPTIONS AND FIELD OBSERVATIONS 15 3.3.1 Fire Training Area (FTA) 3.3.2 POL Area and Dump Site Asql 3.3.3 Defoliated Site 3.3.4 Tetraethyl Lead/Trichloroethylene Spill Aras 3.3.5 Buried F-101 Airplane 3.4 PRIOR SAMPLING AND TESTING 16 3.5 SOIL AND GROUNDWATER SAMPLING ' 16 3.5.1 GZA Sampling 3.5.2 CENED Sampling 3.6 RESULTS FROM LABORATORY ANALYSES - MONITORING WELL 16 LOCATIONS 3.6.1 Petroleum Hydrocarbon Results 3.6.2 Total Metals Analysis Results 3.6.3 Volatile Organic Analysis Results 3.6.4 Semivolatile Organic Analysis Results 3.7 RESULTS FROM LABORATORY ANALYSES - SOIL SAMPLES 19 FROM DEFOLIATED AND PETROLEUM SPILL AREAS 3.7.1 Herbicide Analysis Results (Defoliated Area) 3.7.2 Volatile Organic Analysis Results (Petroleum Spill Area) 3.7.3 Semivolatile Organic Analysis Results (Petroleum Spill Area) 3.8 SUMMARY OF ANALYTICAL RESULTS 19 4.0 LANDFILL AREA 21 4.1 BACKGROUND AND PRIOR. USE 21 4.2 TOPOGRAPHY AND GEOLOGY 21 4.3 SITE DESCRIPTION AND FIELD OBSERVATIONS 21 4.4 SOIL AND GROUNDWATER SAMPLING 22 4.5 RESULTS FROM LABORATORY ANALYSES 22 4.5.1 Petroleum Hydrocarbon and Total Organic Carbon Analysis Results 4.5.2 Total Metals Analysis Results 4.5.3 Volatile Organic Analysis Results 4.5.4 Semivolatile Organic Analysis Results 4.6 SUMMARY OF ANALYTICAL RESULTS 24 5.0 FORMER SALVAGE YARD 26 5.1 BACKGROUND AND PRIOR USE 26 5.2 TOPOGRAPHY AND GEOLOGY 26 5.3 SOIL SAMPLING 26 5.4 RESULTS FROM LABORATORY ANALYSES 27 5.4.1 Total Metals Analysis Results 5.4.2 Polychlorinated Biphenyls (PCB) Analysis Results 5.4.3 Volatile Organic Analysis Results 5.4.4 Semivolatile Organic Analysis Results 5.5 SUMMARY OF ANALYTICAL RESULTS 27 6.0 REFERENCES 29 TABLE OF CONTENTS ( 0ONT D) TABLES TABLE 1 HAZARDOUS MATERIALS SUMMARY ANG fwgil TABLE 2 TOTAL PETROLEUM HYDROCARBON, ETA TABLE 3 TOTAL METALS RESULTS, PTA TABLE 4 VOLATILE ORGANIC RESULTS, ETA TABLE 5 SE VOLATILE RESULTS (GROUNDWATER/ SOILS) , ETA TABLE 6 SEMIVOLATILE RESULTS ( SOILS) , ETA TABLE 7 TOTAL PETROLEUM HYDROCARBON/IOC, LANDFILL TABLE 8 Torn METALS (GROUNDWATER/ SOILS) , LANDFILL TABLE 9 Tom METALS (SOILS ) , LANDFILL TABLE 10 SE VOLATILE RESULTS (GROUNDWATER/ SOILS) , LANDFILL TABLE 11 SEMIVOLATILE RESULTS (SOILS) , LANDFILL TABLE 12 TOTAL METALS RESULTS, SALVAGE YARD TABLE 13 SEMIVOLATILE RESULTS, SALVAGE YARD FIGURES FIGURE 1 LOCATION MAP FIGURE 2 SKETCHED LOCATIONS OF SUSPECTED CONTAMINATION FIGURE 3 AERIAL PHOTOGRAPH, ETA (1958) FIGURE 4 AERIAL PHOTOGRAPH, ETA (1971) FIGURE 5 AERIAL PHOTOGRAPH, ETA (1977) FIGURE 6 AERIAL PHOTOGRAPH, LANDFILL (1971) FIGURE 7 AERIAL PHOTOGRAPH, LANDFILL (1977) FIGURE 8 AERIAL PHOTOGRAPH, SALVAGE YARD (1971) FIGURE 9 AERIAL PHOTOGRAPH, SALVAGE YARD (1977) FIGURE 10 FIRE TRAINING AREA FIGURE 11 LANDFILL, NW END OF RUNWAY FIGURE 12 LANDFILL, SOIL SAMPLE LOCATIONS FIGURE 13 SALVAGE YARD APPENDICES APPENDIX A REPORT OF DOW AIR FORCE HISTORY AND ACTIVITIES APPENDIX B GZA GEOENVIRONMENTALy FINAL FIELD REPORT APPENDIX C ANALYTICAL DATA REPORT (WELL SITES) APPENDIX D ANALYTICAL DATA REPORT ( SOIL SAMPLE SITES) . APPENDIX E NOTICE OF CONTAMINATION (ETA VICINITY) APPENDIX F ANG TEST DATA, FIRE PIT fRwl 111 W19 SIM INSPECTION FORMER DOW AIR FORCE BASE (BANGOR INTERNATIONAL AIRPORT) FIRE TRAINING- AREA, LANDFILL, SALVAGE YARD BANGOR, MAINE PROJECT NO. DOIME000402 F.9 SUMMARY OF FINDINGS 1. At the Fire Training Area (FTA), groundwater and soil contamination have been found at concentrations which require further investigation. The groundwater contamination includes elevated levels of lead, cadmium, benzene and trichloroethene, which exceed FA9 Maximum Contaminant Levels (MCL) for drinking water. There is also evidence of petroleum-type contamination (aromatic and/or polynuclear aromatic hydrocarbons (PAR)) in groundwater and soil samples taken FuR1 from the site. Based on historical information, flammable materials (including fuels and cleaning solvents) that were generated by the USAF, the Maine Air National Guard, the City of Bangor and other groups were transported to the FTA and dumped in several areas. These areas were used for joint fire training exercises with the ANG and the Bangor Airport Fire Department. Therefore, a PRP action with the DOD, the Maine Air National Guard and the City of Bangor is considered appropriate. At the sites adjacent to the FTA (including the trichloroethene. (TCE) spill area/aviation filter disposal area, the alleged petroleum, oil and lubricant (M) spill area, and the former underground storage tank (UST) location), groundwater and soil contamination have been found at concentrations which require further investigation. Specifically, in the vicinity of the TCE spill/aviation filter disposal area, groundwater analysis shows elevated levels of lead and cadmium, and-at the former UST location, groundwater analysis shows elevated levels of lead, cadmium and trichloroethene. These levels exceed the drinking water MCIs. In the vicinity of the alleged POL spill, results reveal the presence of elevated levels of petroleum contamination (PAR) in soil samples and 1"9 elevated levels of cadmium (which exceed the MCL) in a groundwater sample taken from the area. Based on historical information, contamination in these areas are related to past DOD and Maine ANG use. The limited sampling and historical information currently available for these areas indicate that further evaluation is needed to assess DOD and ANG contribution. A PRP investigation is ,qp.9 considered appropriate to determine the liability of both parties. 2. At the Landfill, groundwater and soil contamination have been found at concentrations which require further investigation. The contamination includes elevated levels of lead in groundwater and/or soil. An elevated level of arsenic in groundwater was also detected at one location. The levels detected in groundwater exceed the MCL for drinking water. Also, some locations showed elevated levels of petroleum (PAR) contaminants in soil and groundwater. Historical information states that the Landfill was used by the Maine ANG and the City of Bangor. The deposited material consisted of construction debris, although other material (solvents, batteries, fuels) were also reportedly disposed at the Landfill by the PANG. A. PRP tool investigation which includes a more extensive historical investigation to identify and determine the liability of PPPs is considered appropriate at the Landfill Area; 3. At the Porter Salvage Yard, soil contamination from PAHs has been found at various sample locations. The origin and extent of the contamination are not known. A risk screening or risk assessment should be performed from the available data to determine whether additional sampling or further action is required in this vicinity. Additional sampling may be required to determine the areal and vertical extent of contamination in the vicinity of the samples. This contamination is associated with the former DOD operation of the Salvage Yard and, therefore, is considered DOD responsibility. 2 SITE INSPECTION FORMER DOW AIR FORCE BASE (BANGOR INTERNATIONAL AIRPORT) FIRE TRAINIMARM, LANDFILL, SALVAGE YARD BANGOR, MAINE PROJECT NO. DOIME000402 1.0 EXECUTIVE SUMMARY 1.1 OBJECTIVES AND SCOPE The objectives of the study were to determine the presence or for4i absence of chemical contamination caused by former DOD activities, and to determine if further studies are needed. Explorations were conducted in three major areas of potential contamination selected for study from those identified in the Inventory Project Report (INPR) (Reference 1) and from subsequent sources. The areAs are referred to in this study as the Fire Training Area (FTA) and adjacent sites, the Landfill, and the Former Salvage Yard. The study areas are located on Figure 1. 1.2 SITh HISTORY Rai 1.2.1 Former Dow Army Airfield. The municipal airfield in Bangor was leased in 1940 for construction of military facilities. It was designated Dow Army Airfield in 1942. A total of 2,091 acres was acquired for military use.