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PUBLIC HEALTH ASSESSMENT

BROWARD COUNTY-21ST MANOR DUMP
FT. LAUDERDALE, BROWARD COUNTY, FLORIDA


CONCLUSIONS

Based on the information currently available, it is unlikely that any adverse health effects are possible from exposure to the contaminants at this site. However, because insufficient information is available to assess adverse health effects in all media, this site is classified as an indeterminate public health hazard. Specific reasons for this classification are as follows:

1. No surface soil samples (0 - 3 inches) have been collected and analyzed to determine what contaminants may be present and of public health concern. Dieldrin is present in subsurface soil (>3 inches) both on and off the site and may also be present in the surface soil (0 - 3 inches) and thus accessible to children.

2. The contaminants present in the groundwater surrounding the site do not appear to be site related. However, no deep groundwater sampling has been conducted under the site itself to confirm this or to determine whether contaminants from the site may affect the surrounding groundwater in the future.

3. Most of the residents who obtained their drinking water from private wells have been connected to a municipal water supply. These individuals have been exposed to the contamination in their well water and some exposure may still be occurring. Continued use of this water may result in adverse health effects.

4. On-site subsurface soil and shallow groundwater are contaminated with arsenic, chromium, lead, vanadium and dieldrin. During the period when the dump was open, exposure to these contaminants would have been possible to persons at the site. However, considering that the dump was open for a maximum of twenty years and daily exposure was unlikely, we estimate that the risk of adverse health effects occurring is negligible.

RECOMMENDATIONS

Site Characterization Recommendations

1. Obtain surface soil samples. The appropriate federal, state or local agency should collect a minimum of ten randomly selected surface (0 - 3 inches deep) soil samples from each of the following areas: the dump site, the Meadowbrook Elementary School property excluding the dump, and in the residential area off of the school property within a one-quarter mile radius. Analyze for contaminants including dieldrin, arsenic, chromium, lead and vanadium.

2. Obtain on-site deep groundwater samples. The appropriate federal, state or local agency should collect deep groundwater samples (60-100 ft.) from three random locations on the site. Analyze for contaminants including lead, arsenic, chromium, vanadium, 1,1-dichloroethene, trichloroethene, 1,2-dichloroethene, chloroform and vinyl chloride. It may be desirable to analyze unfiltered samples for comparison purposes.

3. The appropriate agency should contact the city utilities to determine if municipal supply well monitoring data is available for the period between 1984 and 1986.

Public Education Recommendations

1. Conduct a health education program to assist those members of the community who obtained their drinking water from private wells in understanding their potential for exposure and possible health risks. In particular, the health education program should discourage these residents from continued use of their private well water for drinking, cooking or other domestic purposes.

Health Activities Recommendation Panel (HARP) Recommendations

The Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA), as amended, requires ATSDR to perform public health actions needed at hazardous waste sites. To determine if public health actions are needed, ATSDR's Health Activities Recommendation Panel (HARP) has evaluated the data and information developed in the 21st Manor Dump Public Health Assessment.

The Panel has determined that the following actions are needed at this site:

1. Although deep groundwater contamination in the area does not appear to be site-related, residents who obtain their drinking water from private wells are being exposed to contaminants in the water. Health education is needed to assist the community in understanding their potential for exposure and possible health risks, and to inform them of measures they may take to reduce their exposure potential.

2. There is inadequate information to assess the nature and extent of pesticide exposure or whether the site may be a source of future contamination to the deep groundwater.

If information becomes available indicating exposure at levels of concern, ATSDR will evaluate that information to determine what actions, if any, are necessary.

PUBLIC HEALTH ACTION PLAN

This section describes what ATSDR and/or Florida HRS will do at the 21st Manor Dump site after the completion of this public health assessment report. The purpose of a Public Health Action Plan is to ensure that any existing health hazards are reduced and any future health hazards are prevented. ATSDR and/or Florida HRS will do the following:

1. Florida HRS will evaluate surface soil and on-site deep groundwater data, when they become available, to determine the public health significance of any contaminants detected.

2. Florida HRS will develop educational materials to inform the residents who obtained their drinking water from private wells of their potential for exposure and possible health risks. In particular, the material will discourage these residents from continued use of their private well water for drinking, cooking or other domestic purposes.

3. The Broward CPHU will distribute these educational materials to the affected residents and provide consultation to those individuals who require additional information or assistance.

4. ATSDR will assist Florida HRS in the development of these educational materials to ensure that the information is accurate and reflects the most recent scientific findings and agency guidelines.

ATSDR and/or Florida HRS will reevaluate the Public Health Action Plan when new environmental, toxicological, or health outcome data are available.

PREPARERS OF REPORT

Bruce J. Tuovila
Environmental Specialist
Office of Toxicology and Hazard Assessment
Florida Department of Health and Rehabilitative Services

E. Randall Merchant
Biological Administrator
Office of Toxicology and Hazard Assessment
Florida Department of Health and Rehabilitative Services

H. Joseph Sekerke
Biological Scientist
Office of Toxicology and Hazard Assessment
Florida Department of Health and Rehabilitative Services

ATSDR TECHNICAL PROJECT OFFICER

Richard Kauffman
Remedial Programs Branch
Division of Health Assessment and Consultation

ATSDR REGIONAL REPRESENTATIVE

Chuck Pietrosewicz
Regional Services
Office of the Assistant Administrator

CERTIFICATION

This Public Health Assessment was prepared by the Florida Department of Health and Rehabilitative Services under a cooperative agreement with the Agency for Toxic Substances and Disease Registry (ATSDR). It is in accordance with approved methodology and procedures existing at the time the health assessment was initiated.

Richard Kauffman
Technical Project Officer, SPS, RPB, DHAC

The Division of Health Assessment and Consultation (DHAC), ATSDR, has reviewed this Health Assessment and concurs with its findings.

Robert C. Williams
Division Director, DHAC, ATSDR

REFERENCES

1. Memorandum from Board of Public Instruction, Broward County, Florida to Survey Section, Administration & Finance Division, State Department of Education. May 15, 1957.

2. Memorandum from Dean E. Butler to James A. Musgrove, Maintenance and Operational Services, Broward County School Board, December 18, 1979.

3. Florida Department of Environmental Regulation. G.B. Watts, J.W. Glasscock, M.R. Clark and G.E. Wiegand. Peele-Dixie Wellfield Contamination, Broward County. December 1988.

4. Personal communication: Willard Galbreath, Broward County Public Health Unit, Ft. Lauderdale, Florida. December 1991.

5. Personal communication: Mark Commiskey, Risk Management and Safety Department, Broward County School Board, Ft. Lauderdale, Florida, January 1992.

6. U.S. Environmental Protection Agency, Region IV. Site Screening Investigation, Meadowbrook Elementary School Dump, Ft. Lauderdale, Broward County, Florida. TDD No. F4-8707-26. NUS Corporation. September 19, 1988.

7. U.S. Environmental Protection Agency, Region IV. Results of Surface Soil Sampling, Meadowbrook Elementary School, Ft. Lauderdale, Broward County, Florida. TDD No. F4-8811-58. NUS Corporation. February 8, 1989.

8. U.S. Environmental Protection Agency, Region IV. Interim Final Listing Site Inspection, 21st Manor Dump, Ft. Lauderdale, Broward County, Florida. TDD No. F4-8902-21. NUS Corporation. October 1, 1990.

9. ATSDR, Toxicological Profile for Chloroform, ATSDR/TP-88/09, January 1989.

10. ATSDR, Toxicological Profile for Cis, Trans 1,2-Dichloroethene, ATSDR/TP-90/13, December 1990.

11. ATSDR, Toxicological Profile for Arsenic, ATSDR/TP-88-02, March 1989.

12. ATSDR, Toxicological Profile for Chromium, ATSDR/TP-88/10, July 1989.

13. ATSDR, Toxicological Profile for Lead, ATSDR/TP-88/17, June 1990.

14. ATSDR, Toxicological Profile for Vanadium, Draft Document, October 1990.

15. ATSDR, Toxicological Profile for 1,1-Dichloroethene, ATSDR/TP-89/11, December 1989.

16. ATSDR, Toxicological Profile for Trichloroethylene, ATSDR/TP-88/24, October 1989.

17. ATSDR, Toxicological Profile for Vinyl Chloride, ATSDR/TP-88/25, August 1989.

18. ATSDR, Toxicological Profile for Aldrin/Dieldrin, Draft Document, October 1991.

19. Personal communication: Cathy Clay, Epidemiologist, Florida Department of Health and Rehabilitative Services, Environmental Epidemiology Section. January 1992.

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