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PUBLIC HEALTH ASSESSMENT
SILRESIM CHEMICAL CORPORATION
LOWELL, MIDDLESEX COUNTY, MASSACHUSETTS


APPENDIX A

Silresim Site Figures


Figure A-1 Site Locus


Figure A-2 Exploration Location Plan


APPENDIX B

List of Chemicals Stored at Silresim at of March 1978

This section is not available for the Internet. 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 C

Chemical Data Summary Tables

The following tables were 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 D

Tables and Figure, Current Descriptive Health Study

With the exception of Table D-1 and Figure 3, 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

Table D-1
1982-1989 Cancer Incidence
Lowell

Cancer Total Male Female
Obs Exp SIR 95% CI Obs Exp SIR 95% CI Obs Exp SIR 95% CI
Bladder 142 132.3 107 90-126 105 92.4 114 93-138 37 39.9 93 66-130
Hodgkin's Lymphoma 22 29.4 75 47-114 11 15.4 72 36-131 11 14.0 79 42-151
Leukemia 59 61.0 97 119-170 30 32.5 92 63-133 29 28.5 102 73-124
Liver 15 13.7 110 64-190 9 9.2 98 45-189 6 4.5 133 54-326
Lung 516 443.2 116 106-126 337 271.1 124 111-138 179 172.1 104 89-120
NHL 71 100.6 71 55-89 45 48.9 92 68-125 26 21.7 50 33-74
(Non-Hodgkins Lymphoma)
Prostate 213 266.2 80 69-91 213 266.2 80 69-91
Soft Tissue Sarcoma 16 21.1 76 43-123 9 12.0 75 34-142 7 9.1 77 31-160

Note:
SIRs are calculated based on the exact number of expected cases.
Expected numbers of cases presented here are rounded to the nearest tenth.
SIR = Standard Incidence Ratio
* = statistical significance Exp
Obs = Observed number of cases
= Expected number of cases
NC = Not Calulated when observed < 5.


Figure 3. Census Tracts

APPENDIX E

Exposure Pathway Summary Table

Table E-1
Completed Exposure Pathways
Silresim Chemical Corporation
Lowell, Massachusetts

pathway name EXPOSURE PATHWAY ELEMENTS TIME
SOURCE ENVIRONMENTAL MEDIA POINT OF
EXPOSURE		 ROUTE OF
EXPOSURE		 EXPOSED
POPULATION
SOIL
(0-6 IN.)		 Silresim;
other industries in the area		 soil
(0-6 inches)		 site;
surrounding area		 ingestion
absorption		 children
residents
workers		 past
present
SURFACE
WATER		 silresim;
other industries in the area		 surface water east pond;
river meadow brook		 ingestion
absorption		 children future
AMBIENT AIR silresim;
other industries in the area		 ambient air nearby residences and businessess inhalation residents
workers		 past
present
future
INDOOR AIR silresim groundwater plume indoor air basements of nearby residences and buildings inhalation residents
workers		 past
future
SEDIMENT silresim sediment east pond;
river meadow brook		 ingestion
absorption		 children
residents		 past
present
future


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