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ADDENDUM to PUBLIC HEALTH ASSESSMENT

DOVER MUNICIPAL LANDFILL
DOVER, STRAFFORD COUNTY, NEW HAMPSHIRE


CONCLUSIONS

Based upon the most recent information reviewed for the Dover Municipal Landfill Site and the data in the original public health assessment, The NH DPHS and ATSDR conclude that the Dover Municipal Landfill Site is not an apparent public health hazard. This conclusion is based on the current lack of exposure to site-related contaminants through ingestion of groundwater. This exposure pathway appears to represent the major way that residents around the site could be exposed to site-related contaminants and, therefore, should be the main basis for this determination. The potential exposure pathways for this site, on-site soil, on- and off-site air, and off-site surface water do not appear to be significant routes that residents could be exposed, based on the limited data available.

There is a small chance that past exposure to vinyl chloride from one private drinking water well could be a health hazard. This exposure reportedly ended in 1981 and lasted a maximum of 11 years.

Since the direction of groundwater flow at the Dover Municipal Landfill is towards the Bellamy Reservoir and the Cocheco River, there is a potential for future risk of exposure to contaminants migrating off-site from the landfill, as the Bellamy Reservoir is used as a drinking water supply for nearby municipalities, and the Cocheco River is used by the public for recreational purposes. However, with the implementation of the proposed cleanup plan for the site and continued monitoring of area groundwater and surface waters, the potential future risk of human exposure to contaminants from the landfill is not expected to pose a threat to public health.

It was not possible to evaluate the possible health consequences of exposure to volatile organic compounds at a school bus stop, because of a lack of adequate air monitoring.


RECOMMENDATIONS

The NH DPHS and ATSDR continue to concur with the Recommendations of the April 12, 1989, Health Assessment for the Dover Municipal Landfill Site.

Public Health Action

No additional public health actions are recommended at this time.

Public Comment

The Addendum to the Dover Municipal Landfill Public Health Assessment was available for public review and comment from September 28, 1992 through October 27, 1992. The Public Comment Period was announced in local newspapers. Copies of the public health assessment were made available for review at the Dover Public Library in Dover, New Hampshire and the U.S. EPA Region I Records Center in Boston, Massachusetts. In addition, the addendum to the public health assessment was sent to 3 individuals or organizations who had requested that they receive copies. No comments were received.


PREPARERS OF REPORT

John L. Guty
Environmental Health Specialist
NH Division of Public Health Services

Ellen G. Cavalier, M.P.H.
Supervisor, Risk Assessment Program
NH Division of Public Health Services

Bridget A. Whalen
Word Processor Operator
NH Division of Public Health Services

John R. Crellin, Ph.D.
Environmental Health Scientist
Remedial Programs Branch
Division of Health Assessment and Consultation
Agency of Toxic Substances and Disease Registry


Rosalyn Lee
Environmental Engineer
Remedial Programs Branch
Division of Health Assessment and Consultation
Agency of Toxic Substances and Disease Registry


ATSDR REGIONAL REPRESENTATIVE

Louise A. House
Regional Representative
Regional Operations


ATSDR TECHNICAL PROJECT OFFICER

Gregory V. Ulirsch
Environmental Health Engineer
Division of Health Assessment
and Consultation


REFERENCES

  1. Feasibility Study for the Municipal Landfill, Dover, New Hampshire, Prepared by HMM Associates, Inc., Concord, MA for U.S. Environmental Protection Agency - Region I, Boston, MA. February 1991.

  2. EPA. Record of Decision for Dover Municipal Landfill. Boston, MA: U.S. Environmental Protection Agency (EPA). September 1991.

  3. Trip Report: Site Visits of Dover and Somersworth Municipal Landfills in New Hampshire. From RD Lee (ATSDR) to R Williams (ATSDR), August 7, 1992.

  4. Health Assessment, Dover Municipal Landfill, Dover, New Hampshire, Prepared by New Hampshire Division of Public Health Services, Concord, NH for Agency for Toxic Substances and Disease Registry, Atlanta, GA. April 1989.

  5. Personal Communication from Mary Conrad, New Hampshire State Cancer Registry. May 20, 1991.

  6. Personal Communication from Beatrice Fogg, City of Dover Health Officer. May 17, 1991.

  7. ATSDR. Public Health Assessment Guidance Manual. Agency for Toxic Substances and Disease Registry (ATSDR), DHHS(PHS) PB92-147164. Atlanta, GA. March 1992.

  8. Memorandum on analysis of water samples taken from private residential wells in the Tolend road area. From CE Fuller (Camp Dresser & McKee) to D Muldoon (Camp Dresser & McKee). March 23, 1981.

  9. Barnes DG and Dourson M. Reference dose (RfD): description and use in health risk assessments. Regul Toxicol Pharmacol 8: 471-486. 1988.

  10. Hill RN. Current EPA perspectives on animal selection and extrapolation. in (Roloff MV et al, eds) Human Risk Assessment. The Role of Animal Selection and Extrapolation. London: Taylor and Francis. 1987.

  11. Stallones RA. Epidemiology and Environmental Hazards. in (Gordis L and Libauer CH, eds) Epidemiology and Human Risk Assessment. Oxford: Oxford University Press. 1988.

  12. Paustenbach DJ. A survey of health risk assessment. in (Paustenbach DJ, ed) The Risk Assessment of Environmental Hazards. A Textbook of Case Studies. New York: John Wiley and Sons. 1989.

  13. ATSDR. Draft Toxicological Profile for Vinyl Chloride. Atlanta, GA: Agency for Toxic Substances and Disease Registry (ATSDR), DHHS (PHS). October 1991.


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