ATSDR - PHA - SILRESIM CHEMICAL CORPORATION, LOWELL, MIDDLESEX COUNTY, MASSACHUSETTS

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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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