PUBLIC HEALTH ASSESSMENT
FORT DEVENS-SUDBURY TRAINING ANNEX
SUDBURY, MIDDLESEX COUNTY, MASSACHUSETTS

Figure 1. Location of Fort Devens Sudbury Training Annex in Massachusetts

Figure 3. Surface Water and Groundwater Flow within STA Watersheds

Figure 4. Groundwater Recharge Areas

Figure 5. Study Areas within Watersheds and Potable Water Supplies

Figure 6. Monitoring Wells, Phase II

Figure 7. Existing Monitoring Wells, Lake Boon Drainage

Figure 8. Monitoring Wells on STA property bordering Sudbury Road

Figure 9. Chemical Structure of RDX
Table 1: Principal Uses of the Sudbury Training Annex
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MAYNARD PHASE 1942-1957
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Table 2. Summary of Study Areas1
| Number | Area Name | Waste Types | Location |
| A1 | Decontaminated Mustard Burial Area | Clothing with Mustard Agent | E3 |
| A2 | Demolition Ground I | Explosives Residues | D2,3 |
| A3 | General Dump | Trash and Refuse | E4 |
| A4 | Waste Dump | Chemical Wastes/Construction Debris | F4 |
| A5 | Solvent/Waste Dump | Solvents, Canned Food | C4 |
| A6 | Demolition Ground II | Explosives Residues | C3 |
| A7 | Old Gravel Pit Landfill | Chemicals/Refuse, Burning | C3 |
| A8 | Food Burial Area | Food and Possibly Chemicals | D3 |
| A9 | POL2 Burn Area | POL2, Fuels | D2 |
| A10 | Railroad Pit/UST3 Area | POL2, Fuels | C6 |
| A11 | Leach Field | Sanitary Waste, Oil, Grease | D6 |
| A12 | PCB4 Spill Remediation | PCBs4 | D7 |
| P1 | Bldg T223 UST3 | Fuel | E5 |
| P2 | Bldg T267 Fuel Spills | Fuels/Pesticide | E5 |
| P3 | Bldg T209 UST3 | Heating Oil | E5 |
| P4 | Bunker Drum Area | 4 Drums, Unknown Contents | D3 |
| P5 | Drum Storage in A3 | Deteriorated Drums | E4 |
| P6 | Puffer Pond Dump Area | Chemicals | E4 |
| P7 | Patrol Road Waste Area | Chemicals | D5 |
| P8 | Transformer Disposal in A7 | Drums, Debris, Transformers | C3 |
| P9 | Stream Dump Area (A7 & A9) | Chemicals | C,D3 |
| P10 | Confidence Course Dump Area | Chemicals | D3 |
| P11 | Bldg T405 Dump Area | Chemicals, Drums | D3 |
| P12 | Abandoned UST3 in A9 | Petroleum products? | D2 |
| P13 | MA Fire Fighting Academy | Fuel Oil UST3 | D3 |
| P14 | East Gate Dump Area | Chemicals, Drums | F4 |
| P15 | Navy Burning Ground | P15 is actually study area P48 | C6 |
| P16 | Chemical and Waste Storage Bunkers 302, 306, and 309 | Chemicals, Chemical Waste | E4 |
| P17 | Bldg T206 Cloth Burial Area | Contaminated Cloth, Combat Gear, Drums | E5 |
| P18 | Clothing Burial Area | Contaminated? Cloth | E4 |
| P19 | Clearing Tracked Area | Unknown | D2 |
| P20 | Burned Area and Drum | Possible burn area, empty drum | D3 |
| P21 | Dump Area | Unknown | C4 |
| P22 | Old Gravel Pit | General Refuse | B3 |
| P23 | Building T465 Drums | Drums | E3 |
| P24 | Cleared Area | Unknown | C3 |
| P25 | Bldg T463 Test Chamber | Unknown | C3 |
| P26 | Air Drop Zone Clearing | Unknown | D3 |
| P27 | Pyrotechnics Test Area | Explosives Residues | E3 |
| P28 | Rocket Range | Explosives Residues | D6 |
| P29 | Rocket Firing Range | No evidence of disposal activities | D3 |
| P30 | Proposed Test Area | Unknown | C4 |
| P31 | Old Dump | Unknown | C5 |
| P32 | Road and Railroad Intersection | Unknown | D7 |
| P33 | Ground Scar | Unknown | D6 |
| P34 | Main Gate Vegetation Stress | None | D5 |
| P35 | Main Gate Guard Shack | Ground Stains, Stressed Vegetation, PCB4 | D5 |
| P36 | Former Raytheon Building T104 | Abandoned building, Unknown | D7 |
| P37 | Building T106 UST3 | Abandoned building, Unknown | D7 |
| P38 | Railroad Inspection Pit | Unknown | D6 |
| P39 | Dump Area | Drums, Debris, Unknown | C6 |
| P40 | Building T452 Area | Fuel Oil, Unknown | C4 |
| P41 | Bunker 303 Pesticide/Herbicide Storage | Pesticides, Herbicides | E4 |
| P42 | Dump on Excessed Land | Unknown | E2 |
| P43A&B | Disturbed Areas | Unknown | E,F3 |
| P44A&B | Clearing by FEMA5 | None, probable antennae field | F3,4 |
| P45 | Burned Area by Outside Fence | Unknown, Empty Drum | E3 |
| P46 | Cleared/Burned and Dead Trees | None | D4 |
| P47 | Damaged Vegetation | None | E3 |
| P48 | Fuel Bladder Area | Gasoline and Aviation Fuel | C6 |
| P49 | Bunker 323 Drums | Unknown | D4 |
| P50 | Bunker 325 Drum | Unknown | D4 |
| P51 | White Pond Road Drum | Unknown | C4 |
| P52 | Dump Near FEMA5 | Unknown | F3 |
| P53 | Bldg T210 UST3 | Heating Oil | E5 |
| P54 | Bunkers 305, 307, 314 | Chemical (Storage & Waste), Fuels | E4 |
| P55 | Bunker 301 Cleared Area | Unknown | D5 |
| P56 | Bunker 313 Cleared Area | Unknown | E4 |
| P57 | Fumigant Test Bldg 449 | Fumigants, Pesticides | D3 |
| P58 | Sudbury Road Dump | Unknown | C4,5 |
1 The information cited in
this table is from the Remedial Investigation Report (4). As environmental investigations
at STA proceed, the number of study areas, site names and waste types may vary.
ATSDR will review new information relating to public health evaluations at those
study areas.
2 POL = Petroleum, Oil, and Lubricants
3 UST = Underground Storage Tank
4 PCB = Polychlorinated Biphenyls
5 FEMA = Federal Emergency Management Agency
Table 3A. Trespassing at Selected Study
Area
| Study Area | Access Restrictions | Physical Hazards | Surface Soil Contamination1 | Comments2 |
| A1 - Decontamination Mustard Burial Area | Yes3 | No | Yes | One to two dozen bags of clothing, decontaminated afer use in mustard agent testing, were buried. The only contamination found at A1 is a drum confirmation sample (surface soil). |
| A7 - Old Gravel Pit Landfill | Yes4 - fenced October 1991 | Yes | Yes | In the past, trespassers used the area for dirt biking and target practice. The area is now fenced. Surface soil contamination is limited to two drum confirmations and one localized diesel fuel spill. |
| A9 - POL Burn Area | Yes4 | No | Yes | The area is fenced but trespassing reportedly occurs. Fifteen surface soil samples (including a drum confirmation sample) were collected at A9. Although metals, pesticides, VOCs and SVOCs were detected in surface soil, only benzo[a]pyrene exceeded comparison values. |
| A11 - Leach Field | Yes3 | Yes | No | Building rubble and debris. A drum confirmaion sample was collected but contaminants were below comparison values. |
| A12 - PCB Spill Remediation | Yes3 | No | Yes | Potential past exposure to PCBs by persons scavenging parts or vandalizing transformers. PCB-contaminated soil was remediated in 1985. |
| P22 - Old Gravel Pit | Yes3 - boundary fence improved in spring 1993 | Yes | No (nitroglycerin was detected but has no comparison value) | The area, which contains metallic debris, has been used for dirt biking. A six-foot chain linked fence along the installation boundary now prevents access. Removal of limited surface soil and metallic debris is planned (40). |
| P32 - Road and Railroad Intersection | Yes3 | Yes | Not sampled | The area is used for dirt biking. Domestic trash dumping has occurred beyond installation boundary. |
| P36/37 - Former Raytheon Buildings T104 and T106 | Yes4 - the buildings doorways have either been fenced or welded shut. | Yes | Not sampled | The buildings contain physical hazards and asbestos. Trespassing is a problem. ATSDR recommened that the Army demolish the buildings (ATSDR Health Consultation, November 1992 - Appendix 8). Additional field investigations, including surface soil sampling, are planned for both study areas (40). |
| P45 - Burned Area by Outside Fence | Yes3 | Yes | No | A drum confirmation sample contained arsenic (260 ppm) in surface soil at a concentration below relevant comparison values. The arsenic level does exceed a comparison value for residential soils (85); however, current land use is NOT residential. Surface soil removal with confirmatory sampling is planned (40). |
Table 3B. Selected Study Areas with Public
Access
| Study Area | Surface Soil Contamination1 | Comments2 |
| P7 - Patrol Road Waste Area | A soil gas survey was done - no contaminants were detected. | The reported chemical waste disposal area is overgrown with vegetation. Samples from test pits and groundwater do not contain contaminants at levels above comparison values. |
| P17 - Bldg T206 Cloth Burial Area | Yes | Wastes were buried. DDT and related compounds and arsenic (220 ppm) were detected in a drum confirmation sample but at concentrations below relevant comparison values. The arsenic level does exceed a comparison value for residential soils (85); however current land is NOT residential. Additional surface soil sampling is planned (104). |
| P31 - Old Dump | Yes3 Sediment contained elevated metals (Table 8)3 |
The area is used for recreational dirt biking. A drum confirmation sample contained benzo[a]pyrene and lead at concentrations exceeding comparion values. Test pits in the area contain debris but, contaminant concentrations do not exceed comparison values. Removals and confirmatory sampling is planned (40, 104). |
| P34 - Vegetation Stress at Main Gate | Not sampled | No visible evidence of contamination. The area is associated with an underground gas pipeline. |
| P42 - Off-Site Dump | No | Contaminants were not detected in surface soil samples at the site (40). |
| P43 - A and B - Disturbed Areas/Strain Vegetation Stress | Not Sampled | During the October 1992 site visit, ATSDR staff walked the area which has several roads and trails through it. People appear to use the area because some trash (beverage cans) was seen. No evidence of contamination was observed. There is no indication from investigations of the area that past disposal of chemicals occurred. |
| P58 - small dump of domestic debris | Yes | Principally metals contamination, which appears limited to the wetland area. Also some polyaromatic hydrocarbon and total petroleum hydrocarbon contamination. A remedial investigation is recommended for the site (40). |
Table 4. Contaminants1 in Surface
Soil from Selected Study Areas2, 6
| Area | Surface Soil Contamination (0-6") | Concentration (ppm) | Comparison Value | |
| Concentration (ppm) | Reference 3 | |||
| A1 | lead* | 650 | 500 | ATSDR 19914 |
| A7 | DDT* | 360 | 30 | RMEG child |
| DDE* | 86 | 3 | CREG | |
| PCB* | 1.6 | 0.3 | EMEG child | |
| benzo(a)pyrene | 2 | 0.1 | CREG | |
| A9 | benzo(a)pyrene | 0.29 | 0.1 | CREG |
| A125 | PCB | 4 - 10 | 0.3 | EMEG child |
| P31 | benzo(a)pyrene* | 0.38 | 0.1 | CREG |
| lead* | 7800 | 500 | ASTDR 19914 | |
Table 5. STA Watersheds, Associated Study
Areas, and Downgradient Drinking Water Supplies
| Watershed Number | Watershed Area | Study Areas | Drinking Water Supplies |
| 1A | Taylor Brook Above Honey Brook | P6, P16, P27, P41, P43 A/B, P52, P54, P56 A3, A4, P5, P14, P18, P44 A/B, P46, P47, P49, P50, P55 |
Maynard town well #3 (TW1)1 - currently inactive. Maybard private wells on Old Puffer Road and Parker Street (RW1)2 are crossgradient. |
| 1B | Taylor Brook Below Honey Brook | A1, A2, P11, P13, P23, P26, P42, P45 P4, P19, P20, P24, P25, P29, P30, P51 |
Contributes to watershed 3 |
| 2 | Hop Brook Drainage | A10, A11, A12, P28, P36, P37, P38, P39, P48 P7, P15, P32, P33 |
White Pond (Maynard potable water source). Hudson town well (cranberry well) (TW2). Hudson private wells on Concord Road and Parmenter Street (RW2). |
| 3 | Unnamed Tributary 1 to Assabet River (North End) | A8, P9, P10, P57 A7, A9, P8, P12 |
Assabet River (surface water impact). Maynard private wells on Riverside Park (a private road near the Assabet River bridge on White Pond Road [Old Lancaster Road]) (RW3). |
| 4 | Unnamed Tributary 2 to Assabet River (Northwest End) | A6, P22 P21 |
Assabet River (surface water impact). Stow private wells on Thicket Circle, Wildwood Road and Lakewood Road (RW4). |
| 5 | Lake Boon Drainage | A5, P31, P40, P58 | Stow/Hudson private wells on Lake Boon. Dawes Road in Stow is the closest to STA (RW5). |
| 6 | Run Brook (Willis Pond) Drainage | P1, P2, P3 P17, P34, P35, P53 |
Sudbury town well #3 (TW3). Sudbury private wells. There are a few homes around Willis Pond (RW6) and along Maynard Road (rt 27) near Willis Hill (RW7). There are also 1 or 2 homes along Hudson Road near Crystal Lake (RW8). Contributes to watershed 2. |
Table 6. Contaminants1 in Groundwater
from STA Potable and Monitoring Wells5
| Watershed Number | Location2 | Chemical | Maximum or range of concentration in µg/L and (frequency of detection)3 | Comparison value | |
| Concentration in µg/L | Reference4 | ||||
| 1A | A3, A4, P14, P44A, P44B, FW | Manganese | 85-706 (9/13 MW) 77-442 (3/4 OS) |
50 | RMEG (Child) |
| A4 | Lead | 190 | 15 | MCL | |
| potable wells | Iron | 1000 | 300 | 2ºDWS | |
| FW potable wells |
Iron | 512,2640 (2/4 OS) | 300 | 2ºDWS | |
| Maynard Test Well 14, P43B |
Bis(2-ethylhexyl) phthalate |
14-90 (well 14) 9.8 (MW) |
6 | MCL | |
| 2 | A11, P7, P48, FW | Manganese | 52-1700 (8/16) | 50 | RMEG (Child) |
| Iron | 626-5200 (4/16 MW) | 300 | 2ºDWS | ||
| Bis(2-ethylhexyl)phthalate | 17 (1/16) | 6 | MCL | ||
| 3 | potable well | Selenium | 30 (OS) | 10 | MA DWS |
| DM9A | 1,3,5-Trinitrobenzene | 19.3 | 0.5 | RMEG (Child) | |
| 2,4,6-Trinitrotoluene | 14.6 | 5 | RMEG (Child) | ||
| 5 | A5, P40, FW | Manganese | 105-1000 (8/10 MW) | 50 | RMEG (Child) |
| P40 | Iron | 369 | 300 | 2ºDWS | |
| Tetrachloroethylene (PCE) | 30 | 5 | MCL | ||
Table 7. STA Phase II Groundwater Monitoring
Wells1
| Watershed | Number | Location |
| 1A | 1* | A4: One MW is immediately downgradient of the depression at the southwestern end of the study area to confirm earlier detections of lead and assess the potential for migration toward Maynard residential wells. |
| 1B | 10 | A2: One MW is between Taylor Brook and the two
berms that encircle the area that was apparently used for the destruction
of reject ammunition, rockets, and mortars. The MW location will be hydraulically
downgradient of the disposal and destruction area and will provide information
on potential groundwater contamination entering Taylor Brook. P11: One MW is hydraulically downgradient of exisiting MWs OHM-P11-32 and 33 to assess the potential for contaminant migraton through groundwater toward the Assabet River and Maynard residential wells. P13: Four MWs are hydraulically downgradient of the study area to assess the potential for groundwater contaminant migration toward the Assabet River and Maynard residential wells. P23: One MW is hydraulically downgradient of the site and between Building T465 and Honey Brook (the nearest surface water to the area of concern), to asses the potential for contaminant migration. P26: Three MWs will be installed hydraulically downgradient of the study area, along the southeastern edge of the air drop zone as it borders Honey Brook. The MWs will be used to assess the potential for contaminant migration through groundwater toward Honey Brook. |
| 2 | 6 | P36: Two MWs are hydraulically downgradient and
one upgradient of the site and Building T104, to assess the possibility
of groundwater contamination due to the unknown nature of past site activities. P37: Two MWs are hydraulically downgradient and one upgradient of the site, Building T106 and its associated UST, to assess the possibility of groundwater contamination due to the unknown nature of past site activities. |
| 3 | 1 | P57: A MW is between the demolished building and the downgradient wetlands to detect potential groundwater contamination. |
| 4* | A7: One MW is adjacent to the study area perimeter
fence and will determine the potential for migration of chlorinated pesticides
downgradient of a known source area and toward the Assabet River. A9: Two MWs are between the study area and the Assabet River. Domestic water wells are along the river. |
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| 4 | 3 | A6: One MW is downhill from the site in areas
where surface drainage tends to soak into the ground to assess the impact,
if any, of past site activities on groundwater. P22: One MW is downgradient from the gravel pit, to assess potential groundwater contamination migrating toward Stow residential wells. |
| 5 | 3 | P31: One MW is between the study area and Boons
Pond to detect potential contaminant migration toward Lake Boon and adjacent
residential wells. P58: A shallow MW and deep MW, located between the study area and Boons Pond, will monitor migration of contamination, if any, at the top of the water table and deeper in the aquifer beneath the study area. |
| 6 | 1 | P2: A MW is downgradient of the study area, between the area and the swamp to the southeast, to determine if past fuel spills have contaminated groundwater. |
Table 8. Lake Boon Drainage Sediment/Surface
Water Contaminants Exceeding* Comparison Values
| Study Area/location | Contaminant | Maximum or range of concentrations and sampling date/reference | Background Concentration1 |
Comparion Value | |||
| 12/4/902 Four Town FOCUS |
4/913 USATHAMA |
4/924 Draft RI 2/93 |
Concentration | Reference5 | |||
| Sediment (ppm) | |||||||
| P31/P58 - Lake Boon | iron | not reported | 61000 | 4200-93000 (5/5) | 3500-88200 | None | None |
| lead | 3760 | 1160 | 3.3-72 (5/5) | 116-720 | 500 | ATSDR 1991 | |
| Surface Water (ppb) | |||||||
| iron | 950 | 1370 | 97.8-3720 (5/5) | 50-200 | 300 | 2o DWS | |
| lead | not reported | not reported | 2-3.25 (4/5) | <50 | 15 | Action Level |
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Table 9. Surface Water Contaminants Exceeding
Comparison Values6
| Contaminant | Location | Maximum or range of concentration (ppb) and sampling date/reference | Comparison Value | |||
| 12/4/90 Four Town FOCUS |
4/91 USATHAMA |
7/93 OHM RI |
Concentration (ppb) |
Reference1 | ||
| endrin | Puffer Pond | 0.359 (1/8)2 | 0.2 | MA DWS | ||
| bis(2-ethylhexyl)phthalate | Assabet River | 6.9-200 (3/3) | 6 | MA DWS | ||
| iron | Puffer Pond | 582-628 (8/8) | 300 | 2° DWS | ||
| On-site Streams3 | 329-720 (6/7) | |||||
| Assabet River | 516-595 (3/3) | |||||
| Willis Pond | 344-467 (3/3) | |||||
| Lake Boon4 | 950 | 1370 | 97.8-3720 (5/5) | |||
| manganese | On-site stream5 | 67.4 (1/7) | 50 | 2° DWS | ||
| Lake Boon | 221 | 112-665 (5/5) | ||||
Table 10. Massachusetts Children in Special Education Programs;
School Year 1989-1990*
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| *Source: Massachusetts Department of Education School System Summary Report for 1989-1990 | |
Table 11. Hudson Public Schools
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Table 12. Sudbury Public Schools
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| *This includes 20 children who attend out-of-district programs for special education. | |||
Table 13. Maynard Public Schools
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| * Report from Nashoba Regional High School
# There are 7 students receiving Special education services who are in the 3,4 year old age group that are not included in this total of 106. |
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APPENDIX 3: INVESTIGATIONS OF ENVIRONMENTAL CONTAMINATION AT STA
ATSDR reviewed available documents that contain information about historical activities and environmental investigations done at STA. The documents are listed chronologically.
U.S. Army Quartermaster Research and Engineering Center, Natick, MA. Allocation of Igloos at Maynard Quartermaster Test Activity, Maynard, MA. August 6, 1958.
U.S. Army Natick Research and Development Command. Analysis of Existing Facilities/Environmental Assessment Report. November 1977.
US Army Toxic and Hazardous Materials Agency. Installation Assessment of U.S. Army Natick Research and Development Command, Report No. 170. May 1980.
U.S. Army Environmental Hygiene Agency. Phase 2 Solid Waste Management Consultation No. 38-26-8260-83, Hydrogeologic and Subsurface Investigation, Fort Devens, MA. May 1983.
Dames and Moore. Remedial Investigation of Sudbury Annex, Massachusetts. July 1986 and November 1986.
U.S. Environmental Protection Agency. Hazard Ranking System Evaluation, Sudbury Annex Facility, Sudbury, MA. December 1988.
Zecco, Inc. Environment Reports 1, 2, 3 and 4. Fire Test Area. Fort Devens, Sudbury Training Center. 1988 and 1989.
No author listed. Laboratory Test Results - Fort Devens Annex, Lake Boone Drinking Water Recharge Area, Stow, Massachusetts. December 4, 1990.
GZA Geoenvironmental, Inc. Final Report, Site Investigation, 100-Acre Parcel of Excessed Natick Lab Annex Property, Maynard, MA. US Army Corps of Engineers. March 4, 1991.
US Army Toxics and Hazardous Substance Agency. Sampling of White Pond. April 17, 1991.
US Army Environmental Hygiene Agency. Receiving Water Biological Study No. 32-24-H606-91 Environmental Sampling of Puffer Pond Sudbury Annex Fort Devens, MA. April 29-30, 1991.
SEA Consultants, Inc. Environmental Assessment/ Environmental Report/Environmental Impact Report. April 1991.
Harrington S and Gouchoe S. Site Investigations at the Fort Devens Sudbury Annex. January 8, 1992.
U.S. Army Corps of Engineers. Draft Master Environmental Plan, Fort Devens Sudbury Training Annex, MA. May 1991 and January 1992.
OHM Corporation. Site/Remedial Investigation Report. Fort Devens Sudbury Training Annex, MA. February and July 1993.
OHM Corporation. Draft Final Addendum to the Final Technical Plans Phase II Feasibility Study. Fort Devens Sudbury Training Annex, MA. June 1993.
OHM Corporation. Puffer Pond Fish Study, Draft Final, Fort Devens Sudbury Training Annex, MA. June 1993.
Ecology and Environment, Inc. Technical Plan Addenda, Phase II Site Inspections, Remedial Investigation, Fort Devens Sudbury Training Annex, MA. June and October 1993.
OHM Remediation Services Corporation. Decision Documents, No Further Action Under Comprehensive Environmental Response, Compensation, and Liability Act for Study Areas P15, P29, P30, P44A and P44B, P46, P47, P53 and P55. October and December 1993.
OHM Corporation. Final Site/Remedial Investigation Report, Fort Devens Sudbury Training Annex, Massachusetts. January 1994.
Ecology and Environment, Inc. Phase II Site Investigations Report, Fort Devens Sudbury Training Annex, Massachusetts. March 1994.
OHM Remediation Services Corporation. Draft Decision Documents, No Further Action Under Comprehensive Environmental Response, Compensation, and Liability Act for Study Areas P14, P18, P21, P24, P32, P34 and P50. December 1993 and May 1994.
Ecology and Environment, Inc. Draft No Further Action Discussion Documents for Study Areas A6, P26, P40, P42, P43A/B, P48, P56 and P57. June 1994.
APPENDIX 4: SITE HISTORY, DESCRIPTION AND OBSERVATIONS
Of the 70 STA study areas, only those of potential public health concern are presented here. Based on available information, the remaining study areas identified on the Annex are not of public health concern at this time. However, ATSDR will reevaluate any site that future data suggest is a public health threat.
There are two main public health issues at these sites. First, possible exposure of trespassers or persons using public lands, formerly part of STA, to surface soil contaminants or physical hazards. Second, potential groundwater/ surface water contamination may affect potable water sources or area surface waters that are fished. The study areas described here have the greatest potential for public health concern because of their location and human activities in those areas. Descriptions of the study areas are given here. Evaluation of available sampling and analytical information are included in other portions of this document.
Descriptions of study areas are primarily based on information from the February and July 1993 Remedial Investigation reports (1,2), the April 1992 Work Plan (3), and the January 1992 Master Environmental Plan (4). Site-specific observations made by ATSDR personnel during the March 1991 and October 1992 site visits to STA are included as well. Study areas about which community members are concerned are also included. Those concerns were expressed by citizens during October 1992 meetings with ATSDR staff (5) and in Four Town FOCUS written comments on ATSDRs Initial Release Public Health Assessment for STA dated January 1992 (6).
Study Area A1: Mustard Burial Area
The Mustard Burial Area contains clothing that was tested to find its absorptive properties for mustard agent. About 57 grams of the mustard agent was used for this testing that occurred between 1965 and 1972. The clothing was decontaminated with bleach prior to burial. Disposal may have involved fewer than twenty-four trash bags of decontaminated clothing (1).
This site is about 100 feet from Patrol Road and about 500 feet due east of Taylor Brook. It is accessed by a path overgrown with vegetation. The Green Meadow Elementary School in Maynard is about 2,000 feet northeast of the site (6).
Study Area A2: Demolition Ground I
From 1942 to 1955, reject ammunition, mortars, and rockets were destroyed at A2. Burnings were done on an eight foot square concrete pad. No records were available describing the quantities and types of materials involved. Piles of debris are visible around a building on the site. Four drums were also found in the area (1).
This site is 500 feet west of Taylor Brook and 1,000 feet west of Area A1. It is 300 feet from Patrol Road and can be accessed via a rocky dirt road. Although no training exercises are currently done at STA, a cleared area about 2,000 feet south of A2 had been previously used for that purpose.
Study Area A3: General Dump
This site is in an old gravel excavation in the northeast portion of the Annex and is accessible from Patrol Road. It was used from 1957 to 1979 for dumping trash and refuse. Deteriorated drums, construction debris and other general refuse at the surface and in scattered piles were noted in this area. A small pit covered with a wire mesh was also discovered.
Area P5, Drum Storage Area, has been included in the investigation of A3. Empty drums were found lying on their sides in the woods about 150 feet southwest of the old gravel pit. The study area is about one-half mile from off-post wells (6); but, those wells are hydraulically upgradient (see Figure 5 in Appendix 1).
Area of Contamination A4: Waste Dump
The Waste Dump was used during the late 1960s to early 1970s for the burial of unidentified chemical wastes. Small amounts of construction debris have been dumped in this location since 1986. Drums may also have been buried in an area near the east gate. This area has also been used for training exercises.
A4 is near the northeast boundary of the installation. Although A4 is less than one-half mile from off-post residential wells (6), those wells are hydraulically upgradient (see Figure 5 in Appendix 1).
Study Area A5: Solvent/Waste Dump
A trench-like excavation in this area was the burial site for laboratory solvents from about 1973 to 1979. The trench is about six feet by twelve feet by four feet. This excavated area is near the facility bunkers, 100 feet east of White Pond Road, north of Building T452 and south of Bunker 334. The area around A5 has been used for training exercises in the past (1,7).
The site is about 1 mile north of White Pond, a surface water source of drinking water for the town of Maynard. A5 is within one-half mile of off-post private wells on Lake Boon (6).
Study Area A6: Demolition Ground II
The area contains reinforced concrete test stalls used from 1942 to 1950 for testing ammunition and explosives. The Watertown Arsenal used the area as late as 1977 for testing of up to 3 pounds of Class 1.1 explosives (bulk explosives that are not encased in any shell or projectile). In addition, reject munitions might have been destroyed in the area (1).
ATSDR staff members who visited the site consider the test stalls a physical hazard. The walls of the structure are over 10 feet high and flank an open area in the middle. One of the walls is built into a hill. Steel girders span the top of the test structure (5).
Demolition Ground II is in a wet, marshy, and densely wooded area. A dirt road leading to the area is overgrown with vegetation and barricaded where it intersects Patrol Road. During wet weather, a stream may be present in the area (1). Groundwater flows south to southwest in the area.
Area of Contamination A7: Old Gravel Pit/Laboratory Dump/General Refuse Dump
This 20 acre area was a borrow source for road construction gravel during installation development. Disposal of drums and other unidentified chemical containers at this location occurred between the late 1950s and 1970s. Both sides of the access road are the areas most likely used. General refuse has been buried at shallow depths since 1941. Burning of debris was also reported. The general public also used the site for unauthorized dumping in the 1970s until access was restricted. Such dumping resumed during the Dames and Moore Remedial Investigation of the area until physical barriers were constructed.
Intermittent fencing on the north portion of the Annex had allowed non-military motorcycle riders, reportedly children (6), access to the site as evidenced by tire tracks. An eight-foot, chain-linked fence was erected around Area A7 in October 1991 (2,5). There are piles of exposed scrap metal and logs on the surface of the site. The area was also used for target shooting as evidenced by empty shotgun casings (4,5).
This area is located northeast of the USAF Radar Station and is bounded on the north by Assabet River and on the south by Patrol Road. The entrance to this area is by a dirt road going north from the patrol road. This road is slightly overgrown with vegetation and is 200 feet in length. Area P8, the transformer disposal area, is on this site.
Study Area A8: Food Burial Area
Between 1968 and 1975, this 1-1/2 acre site, located across Patrol Road from the POL burning area, was used for the burial of large amounts of foodstuffs that had been used in preservation experiments. These foodstuffs included irradiated meat products, weather-exposed field rations, and canned goods. Unidentified chemicals were possibly disposed in this area, too. In 1985, the Massachusetts Air National Guard and 3245th Civil Engineers constructed an obstacle training course in Area A8 and the area immediately north of it.
The site is between White Pond Road and the Patrol Road in the northern area of the Annex. Area P10, the confidence course dump area, is next to the site and will be investigated as part of this area.
Area of Contamination A9: POL Burning Area
This fenced site was used for product testing, flame-retardant clothing testing, and destruction of confiscated fireworks. From October 1973 until December 1984, the Massachusetts Fire Fighting Academy used two bermed fire pits. The pits were first filled with six inches of water then with fuel oil, and the contents were ignited. Other fuel (JP-4) was also reportedly used.
Contaminated soils were removed from these two fire pits between September, 1987 and July, 1988 to depths up to twenty-six feet. Soil within Area A9 was used to backfill the excavation.
The 7-acre site is north of the Patrol Road and east of Area A7. The entrance is near the Annex north gate. Grass and brush cover large sections of this area, while vegetation is stressed in remediated areas. Area P12, an abandoned underground storage tank (UST), is within Area A9 boundaries.
Study Area A10: Railroad Pit/Underground Tank Area
This concrete pit, under a section of railroad track in the southern portion of the Annex, was presumably used for locomotive and equipment maintenance. Reportedly, the pit had been pumped out and refilled with water. This area was used for automobile oil changes by housing residents and the general public who discarded engine oil into the pit.
Area A10 is 600 feet east of the west gate and 1,000 feet south of White Pond, which is a surface water source of potable water for the town of Maynard.
Study Area A11: Leaching Field
This leaching field was constructed in World War II for a barrack which no longer exists. An old meteorological laboratory is still connected to the leach field. Water purification systems (filters and ion exchange) operate in an adjacent pumphouse and the backwash water is discharged to the leach field.
Area A11 is less than one acre in size and is in the southern portion of the Annex 100 feet east of Diagonal Road. Reportedly local residents appear to have access to the area. Building rubble and debris were observed by ATSDR staff members during a site tour (5).
Study Area A12: PCB Spill Remediation Area
Area A12 was contaminated when 100-200 gallons of PCB-containing fluids spilled from transformers that were vandalized. During July 1985, about 162.7 tons of soil contaminated with PCBs was excavated from the area. The remediation at this site was approved by the Massachusetts Department of Environmental Protection; however, current cleanup criteria are more stringent than those used in 1985. Future evaluation of this area will address the appropriateness of the PCB cleanup criteria with respect to projected land use (3,7).
Study Area P1: Underground Storage Tank (UST) Across from Building 223
Buildings in this area were used for engineering and maintenance purposes. An UST that contained fuel is suspected to be under an asphalt pad and may have been here as early as 1959. The area is on the south side of Patrol Road, north of the guard shack.
Study Area P2: Building T267 Fuel Spills
A single above-ground storage tank is believed to be the source of potential petroleum contamination in this former engineering and maintenance area. Many small fuel spills occurred here. Drums are currently stored in this building. Surface soil was removed to a depth of 6-inches after a five gallon malathion spill occurred on the dirt floor. The date this spill occurred was not reported. Area P2 is located on the south side of Patrol Road and east of Area P1.
Study Area P3: Building T209 UST
This UST that contained heating oil for the former General's Quarters is believed to have been abandoned ten years ago. The building was used by the Massachusetts State Police for training. The tank is behind Building T209 north of the driveway.
Study Area P5: Drum Storage by Area A3
This drum storage area is in a forested area between a swamp and Area A3. It can be accessed from Patrol Road. Area P5 is included as part of Area A3 (2).
Study Area P6: Puffer Pond Dump Area
Area P6 could have been used as a chemical dumping and burial area. The vegetation is moderately dense forest. This area on the north end of Puffer Pond. Groundwater flows east toward Puffer Pond and hydraulic connection exists between the surface and groundwater (7,8).
Study Area P7: Patrol Road Waste Area
Based on interviews with NARADCOM personnel and interpretation of aerial photographs, P7 could have been used as a miscellaneous waste chemical disposal area between 1940 and the 1950s. Currently the area is mostly overgrown with vegetation and only a few small areas are cleared. P7 is part of the Marlboro Sudbury State Forest and is accessible by the public. The area is about one-half mile from White Pond and Lake Boon (3,6).
Study Area P8: Area A7 Possible Transformer Disposal
Area P8, the surface dump at the southeast end of Area A7 was a possible transformer disposal area.
Study Area P9: Stream Dump Area
Area P9 could have been used as a chemical dump and burial area. It is between Areas A7 and A9 on the north side of Patrol Road. Vegetation is moderately dense and a stream flows through the area toward the Assabet River.
Study Area P10: Confidence Course Dump Area
A training confidence course was constructed in 1985 in Area A8, the Food Burial Area, and in the area immediately north of Area A8. The area contains a wooden training structure, about 25 feet high (5). A portion of A8, now designated as P10, could have been used for chemical disposal.
Study Area P11: White Pond Road Burial Area
Chemical dumping and burial may have occurred at Area P11. A building in this area may have been used for ordnance surveillance activities during the 1950s. Later the building and area were used for defoliant, rodent, and insect research, and for fiberglass and foam polymer structural research and development. Spray equipment for the structural research was cleaned by spraying cleaning solvent through the system out into the air. Fifty to seventy-five drums (5 gallon cans and 55 gallon drums) containing decontamination water were buried in Areas P4 and P14. Area P11 was also used by the Massachusetts Fire Fighting Academy.
Area P11 is near the junction of White Pond Road and Puffer Road. The area around the buildings is mostly grassed, while the southern part is densely wooded (5). Area P11 is in an area adjacent to two surface water drainage streams.
Study Area P12: Abandoned UST in Area A9
A pump apparatus for an underground storage tank (UST) was housed in a fenced-in metal shed east of the cloth test pit. The shed and fence were removed to assist in the UST removal; the shed was on a concrete slab. Visual evidence suggests that the UST is under the concrete slab. A fill pipe and vent are set in the concrete slab.
Study Area P13: Former Massachusetts Fire Fighting Academy
Area P13 was originally a farm that the Army acquired during the 1940s. Later this area may have been used to conduct munitions quality control inspection and testing. The Massachusetts Air National Guard used this area for training exercises and storage of equipment from 1973-1978. Fuel oil was stored in several 1,000-5,000 gallon USTs; annual consumption of fuel oil in this area is estimated at 55,000 gallons.
Since 1982 the Massachusetts Fire Fighting Academy (MFFA) has used this area on a limited basis. Flammable liquid training is conducted about 12 times per year and car fire training is conducted 5 times per year. MFFA used poor housekeeping practices when handling hazardous materials. Dead grass and stains were observed around the burning pan (3).
This area is south of the north gate and east of Area A8. Area P13 lies between two surface water drainage streams. Potential contamination in this area could be from USTs and past fire training activities.
Study Area P14: East Gate Burial/Dump Area
This area may have been used for the disposal of drummed decontamination water and chemicals from polyurethane foam and fiberglass structure research at Area P11. The disposal activities may have occurred between 1950s and 1960s.
P14 is a slightly elevated, wooded area surrounded by swampy terrain. An old stone well is adjacent to Patrol Road. The area is south of the property leased by the Federal Emergency Management Agency (FEMA) (2). Off-post residential wells are within about one-half mile of Area P14 (6).
Study Area P15: Navy Burning Ground
Although it was previously reported that Study Area P15 was used as a burning ground (2), the Navy did not burn any material at STA. Study Area P15 is actually the fuel bladder area, P48, which is described under that heading (9).
Study Area P17: Clothing Burial Area by Building T206
The area was used to bury contaminated cloth in 1960; but, no record of what the contaminant was could be found (10). During the early 1970s, truckloads of materials were buried in shallow depressions (two to three feet deep). The buried materials were clothes and combat gear originating from Natick Laboratory research projects dealing with new products and battle damage assessment on equipment used by troops in Vietnam. Interviewees did not recall any contaminated materials or chemicals being disposed of in these areas. One drum was found in the area (2).
P17 is east of Building T206 on property that was transferred from the STA to the Commonwealth of Massachusetts on December 13, 1976. The study area is in the Marlboro Sudbury State Forest (6).
Study Area P18: Cloth Burial Area
Contaminated clothing from research projects dealing with new products may have been buried in this area during the early 1970s. This area is located west of Area P17 and is reportedly accessed by an overgrown road that originates from the Patrol Road across from Building T267 (2).
Study Area P22: Old Gravel Pit
Area P22 has been a gravel pit from the 1940s to the present. There is no documentation that this area was used other than as a general refuse dump, but disposal of household quantities of hazardous materials could have occurred. The area shows signs of being used by the public for motorcycle riding, target shooting, and dumping of general household goods. ATSDR staff members observed metallic debris and evidence of unauthorized dumping in the area (5).
This area can be accessed by a path which originates at Patrol Road. The path from Patrol Road to the gravel pit is barricaded so that vehicle access is not possible. ATSDR personnel observed that access to the site is possible from off-post (Boons Hill area of Stow) (5). Although the Annex perimeter, in this area, was not fenced at the time of the site visit, the Army fenced the northwestern boundary in the spring of 1993 (11).
Study Area P23: Building T465 (Drums)
Area P23 is Building T465 and the surrounding area. It has been used for testing of aerial delivery equipment and packaging material. Scattered debris and several drums are in and around the building. No visual ground stains or stressed vegetation are evident in the area (2,7).
Study Area P31: Old Dump
EPA identified this dump in 1982. Aerial photographs indicate that the area has always been vegetated. The land has been excessed from the Annex and is now part of the Marlboro Sudbury State Forest.
The area is at the intersection of Sudbury Road and White Pond Road. The cleared area has hills and valleys and is used by motorcyclists for recreation. Residential wells are within one-quarter mile of the area.
Study Area P32: Road and Railroad Intersection
The area is on the southern border of STA at an abandoned crossing of the old Boston and Maine Railroad and old Marlboro Road. P32 is littered with debris, (a variety of automobile parts, a burned-out car, barbed wire and trash). There are also dead trees and remnants of numerous small fires. The area has been used by local residents for trash disposal and off-road dirt biking.
Study Area P35: Main Gate Guard Shack
Several transformers, which may contain PCBs, are inside an electrical utility room attached to the Guard Shack. Reportedly, some of the grass behind the building was stained and there is possible stressed vegetation (2).
Study Area P36: Building T104
The former Raytheon Building T104 and surrounding area was used from the 1960s until 1971 for research and development of missile guidance system, radar systems, and manufacturing electronic equipment for defense-related projects.
ATSDR staff members observed that the building was unsecured, contained abundant debris, and appeared structurally unsound (5). The building also contains asbestos (12). Evidence of trespassing at P36 was also observed. Perimeter fencing is in disrepair and the Army has difficulty keeping trespassers off STA property. Residential areas are within one-half mile of the site.
ATSDR wrote a health consultation in November 1992 recommending that the Army demolish the building (see Appendix 8). Thus far, the Army has blocked entrances to the building using welded steel bars and fencing (11).
Study Area P37: Building T106 UST
Building T106, which is about 100 yards from building T104, was used by the Aero-Mechanical Engineering Division of the Natick Laboratories as a parachute building. Reference has been made to a 1,000 gallon UST in the building.
The building is in a similar state of disrepair as building T104 in study area P36. T106 also contains asbestos and debris; evidence of trespassing was observed (5). A discussion of T106 is included in the November 1992 ATSDR Health Consultation. The Army used chain-linked fence to block openings to T106 (11).
Study Area P38: Former Railroad Inspection Pit
The area is in the southern portion of the Annex about 1800 feet southeast of White Pond. A building foundation, believed to be the inspection pit, is on the west side of the classification yard access road. The pit might have been used for disposal of waste oils and fuels.
The foundation is filled with soil. West of the foundation is a depression with little vegetation, and there is debris (wooden beams, a metal pole, and some concrete) in the woods. A few areas north of the foundation also lack vegetation and have wooden debris (1).
Study Area P39: Dump Area
Scattered debris and partially buried drums were observed in this area. P39 is in the southern portion of the Annex, north of Area A10. The site is in a swampy area and is about 1000 feet from White Pond, a surface water source of potable water for the town of Maynard. P39 is accessible to local residents (2,6).
Study Area P40: Building T452 Area
Building T452 is a bungalow that was converted into an animal testing laboratory by NARADCOM in the 1960's. It has been used as a guest house, but is currently unoccupied. Spills of No. 2 fuel oil have occurred in the past when the heating oil storage tank in the building's basement overflowed (2).
Study Area 41: Bunker 303 - Pesticide/Herbicide Storage
The bunker was used in the past for storage of pesticides (DDT) and herbicides (Ureabor). The Ureabor was used for weed control along the fence line until 1973. In 1977 about 1500 pounds of the herbicide was stored in the bunker; a large number of the 50 pound bags were ripped and a considerable amount of material had spilled on the floor (2). Ureabor is no longer stored on STA (11).
Study Area P48: Fuel Bladder Area
Area P48 was used for testing Petroleum, Oil, and Lubricant (POL) bladders from 1959 to 1965. The bladders, ranging up to 500 gallons in size, were partially buried. The bladders reportedly contained gasoline and aviation fuel. Currently a portion of the area is fenced and used for testing the weather resistance of clothing materials.
Area P48 is in the southern portion of the Annex. It is bordered by Bruen Road on the west and to the north and east by forest (2). It is approximately 700 feet south of White Pond (6).
Study Area P57: Fumigant Test Bldg 449
P57 is a newly listed study area that is the site of a demolished building, S449. The former Press House, part of the Food Science Laboratory, was used for the study of effects of toxic fumigants on stored product insecticides (13). Sampling of soil, groundwater, and sediment and surface water from an adjacent wetland are planned (7).
Study Area P58: Sudbury Road Dump
The site is a swampy area adjacent to Sudbury Road and may drain into Lake Boon during periods of high water flow. A car battery, paint cans, and other metal and glass debris have been found in the area. The debris appears to be household trash, many bottles appear to be from the 1930's. The site was originally investigated as part of P31 but is now listed as P58, Sudbury Road Dump (14).
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