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PUBLIC HEALTH ASSESSMENT ADDENDUM

IRON HORSE PARK
BILLERICA, MIDDLESEX COUNTY, MASSACHUSETTS


APPENDICES


Appendix 1 Amended Health Assessment for Iron Horse Park, April 4, 1990.
Appendix 2 Figure 1
Appendix 3 Tables 1-11
Appendix 4. Summary of Written Correspondence
Received during the Public Comment Period
Appendix 5. Responsiveness Summary



APPENDIX 1

The following section was not available in electronic format for conversion to HTML at the time of preparation of this document. To obtain a hard copy of the document, please contact:

Agency for Toxic Substances and Disease Registry
Division of Health Assessment and Consultation
Attn: Chief, Program Evaluation, Records, and Information Services
Branch, E-56
1600 Clifton Road NE, Atlanta, Georgia 30333


APPENDIX 2
Site Figures


Figure 1. Site Map



APPENDIX 3
Tables 1-11

Table 1
On-Site Surface Water Contamination

Contaminant

Level
(in ppb)

Location AWQC (in ppb)
Vinyl Chloride
Benzene
Arsenic
Lead
Mercury
19
12
1,230
1,260
2.2
In leachate
seepage into
Content Brook
0
0
0
50
.144



Table 2
On-Site Surface Water Sediment Contamination

Contaminant Level
(in ppm)
Location EMEG (in ppm)*
Arsenic 11 In leachate
seepage into
Content Brook
20



Table 3
On-Site Ground Water Contamination

Contaminant Level
(in ppb)
Location Comparison
Value (in ppb)
Source Depth
Arsenic
Arsenic
849
340
At eastern edge
Near Content Brook
.02
.02
CREG
CREG
Deep overburden
Shallow Overburden
Arsenic
Benzene
Vinyl Chloride
368
91
130
On landfill 940 ft.
West of Content Brook
.02
1.0
0.2
CREG
CREG
EMEG(c)
Shallow Overburden
Lead 21 Residential Section
of Landfill
15 MCL Deep overburden
Benzene
Lead
6.8
23
Commercial
Section
of Landfill near
Middlesex Canal
1.0
15
CREG
MCL
Deep overburden
Trichlorethylene 60 Western Boundary of Site 3 CREG Deep overburden
Benzene 16 North of Commercial
Section near
Richardson Pond
1.0 CREG Unknown
Vinyl Chloride
Benzene
17
13
Juncture of Commercial
and Residential Sections
0.2
1.0
EMEG(c)
CREG
Unknown



Table 4
On-Site Air Contamination

Contaminant Level
in ppm
Location EMEG(a)
in ppm
Benzene
Toluene
Xylenes
Trichloroethene
Tetrachlorethene
6.65
10.9
26.4
.235
.238
Within Gas
Collection System
at Landfill
.002
.3
NA
NA
.3



Table 5
Off-Site Surface Water Contamination

Contaminant Level
[in parts per
billion (ppb)]
Location AWQC (in ppb)*
Vinyl Chloride
Arsenic
35
67
In leachate
seepage into
Richardson Pond
0
0

*Ambient Water Quality Criteria (AWQC) are established by federal environmental agencies for guidance with respect to effects of surface water pollutants on human health and safety of aquatic organism consumption.


Table 6
Off-Site Surface Water Sediment Contamination

Contaminant Level
in ppm
Location EMEG (in ppm)*
Arsenic 82 In Content Brook
700 feet east of
Gray Street
20



Table 7
Off-Site Ground Water Contamination

Contaminant Level
(in ppb)
Location Comparison Value
(in ppb)
Source Depth
Vinyl Chloride
Vinyl Chloride

Arsenic
Arsenic
Arsenic
20
11

308
120
234

Pennisula into
Richardson Pond
0.2
0.2

0.02
0.02
0.02
EMEG(c)
EMEG(c)


CREG
Shallow Overburden
Deep overburden

Shallow Overburden
Deep overburden
Bedrock
Arsenic
Mercury

Arsenic
Mercury

Arsenic
Mercury
7
0.3

38
0.7

30
0.4


.5 Miles East of Content Brook
0.02
2

0.02
2

0.02
2
CREG
LTHA

CREG
LTHA

CREG
LTHA
Shallow overburden


Deep overburden


Bedrock
Benzene 810 at Iron Horse Park
Southwest of Landfill
1 CREG Shallow overburden
Arsenic 451 West of
Richardson Pond
0.02 CREG Bedrock



Table 8
Food Chain Contamination

Contaminant Level
[in parts per
million (ppm)]
Spieces Location FDA Tolerence
Limit (in ppm)
PCBs
PCBs
Mercury
PCBs
Mercury
.492
.149
.0005
.5
.0007
Fish
Fish
Fish
Field Mouse
Shrew
Long Pond
Content Brook
Content Brook
?
near Richardson
Pond
2.0
2.0
1.0
2.0
1.0

* These levels are established by the Food and Drug Administration in order to protect human health.


Table 9
Toxic Release Inventory (TRI) Data for Billerica
Amount Released to Air in 1988

Compound Amount Released (in pounds)
Phenylisocyanate
Ethylene Oxide
Freon 113
250
14,500
25,171



Table 10
Potential Exposure Pathways

Pathway Name Source Environmental
Media
Point of
Exposure
Route of
Exposure
Exposed
Population
Time
Food Chain Long Pond
Content Brook
Food Chain
Ingestion Consumers of
Locally Caught Fish
Past
Present
? Future
Ambient Air Landfill Gas Ambient Air Landfill Grounds Inhalation Individuals in
areas at or near
the Landfill
Past
Present
Surface Water Landfill Leachate
& Erosion
Surface Water Richardson Pond
Content Brook
Ingestion
Dermal Contact
Individuals Wading
in Content Brook &
Richardson Pond
Past
Present
?Future
Surface Soils &
Sediment
Landfill Erosion Surface Soils &
Sediment
Residents East of
Gray St. within
Flood Plain
Dermal Contact Resident East of
Gray St. within
Flood Plain
Past
Present
? Future

Table 11

The following table was not available in electronic format for conversion to HTML at the time of preparation of this document. To obtain a hard copy of the document, please contact:

Agency for Toxic Substances and Disease Registry
Division of Health Assessment and Consultation
Attn: Chief, Program Evaluation, Records, and Information Services
Branch, E-56
1600 Clifton Road NE, Atlanta, Georgia 30333


APPENDIX 4--SUMMARY OF WRITTEN CORRESPONDENCE
RECEIVED DURING THE PUBLIC COMMENT PERIOD

Iron Horse Park site
Public Comment



Name and Address

Information



Comment

Supplied

Request

No information was requested and no comments were received during the comment period.


APPENDIX 5--RESPONSIVENESS SUMMARY

SUMMARY OF PUBLIC COMMENTS

This responsiveness summary addresses comments that were received by MDPH or ATSDR during the public comment period for the Iron Horse Park NPL site. This period was from July 19, 1994 to August 18, 1994. No comments were received by ATSDR or MDPH during this period.



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