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PUBLIC HEALTH ASSESSMENT

NAVAL COMPUTER AND TELECOMMUNICATIONS AREA MASTER STATION, PACIFIC (NCTAMS PAC)
WAHIAWA, HONOLULU COUNTY, HAWAII
AND
NAVAL RADIO TRANSMITTER FACILITY LUALUALEI
(NRTF LUALUALEI)
LUALUALEI, OAHU COUNTY, HAWAII


CONCLUSIONS

ATSDR has drawn the following conclusions from current environmental data and information on the NCTAMS PAC site:

  • Surface soil contamination in the gulches at NCTAMS PAC Wahiawa is not likely to migrate via intermittent streams and accumulate in fish downgradient of the site. Because no exposure pathways exist, the contaminated soil poses no public health hazards.
  • Surface soil contamination at transformer sites at NCTAMS PAC Wahiawa is not likely to migrate via surface water runoff and accumulate in fish in the North Fork of the Kaukonahua Stream. Because no exposure pathways exist, PCB-contaminated soil poses no public health hazards.
  • PCB-contaminated soil at transformer sites located in residential areas was heavily vegetated with grass and the areas of highest contamination were limited to several feet near the entrance gates. Actual exposure levels are not expected to result in adverse health effects. Past exposure to PCBs in soil at the playground located adjacent to the Building 119 transformer site is not expected to be associated with adverse health effects.
  • No evidence exists to suggest that exposure to EMFs near NRTF Lualualei could result in any adverse health effects.
  • On the basis of information available on the potential of contaminated soil to migrate via surface water and affect fish downgradient of the site; on the potential exposure to contaminated soil at transformer sites in residential areas; and on the EMFs from the radio transmission towers affecting public health, ATSDR concludes that the NCTAMS PAC site should be assigned to the No Apparent Public Health Hazard category.

PUBLIC HEALTH ACTION PLAN

The Public Health Action Plan (PHAP) for NCTAMS PAC contains a description of actions taken and planned by ATSDR, the Navy, EPA, and the Hawaii Department of Health at and in the vicinity of the site after the completion of this PHA. The purpose of the PHAP is to ensure that this PHA not only identifies public health hazards but also provides a plan of action designed to mitigate and prevent adverse human health effects that result from exposure to hazardous substances in the environment. The public health actions that are completed, being implemented, or planned are as follows:

Completed Actions:

  • The Navy has remediated PCB-contaminated soil at multiple transformer locations.

Ongoing/Planned Actions:

  • The Navy will perform remediation of highly contaminated soil in the Burn Area of the Building 6 gulch. This will continue to ensure that contamination will not migrate downgradient and accumulate in fish.
  • The Navy will complete remediation of PCB-contaminated soil at all transformer locations throughout NCTAMS PAC to a cleanup goal of 10 ppm in industrial areas and 1 ppm in residential areas. This will continue to ensure that contamination will not migrate downgradient and accumulate in fish.
  • The Navy will perform remedial investigations of the Service Station Gulch and the West Gulch disposal areas, and remedial activities as necessary.
  • ATSDR will review remedial investigation documents for NCTAMS PAC for sites that have not yet been investigated or that require further investigation as they become available and revise the conclusions of this PHA if necessary.
  • The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA; also known as Superfund), as amended, requires ATSDR to conduct needed follow-up health actions in communities living near hazardous waste sites. To identify appropriate actions, ATSDR created the Health Activities Recommendation Panel (HARP). HARP has evaluated the data and information contained in the NCTAMS PAC PHA for appropriate public health actions. At this time, no follow up health activities are recommended for NCTAMS PAC because there is no known exposure at these sites at levels that pose a public health threat.

PREPARERS OF REPORT

W. Mark Weber, Ph.D.
Geologist/Environmental Health Scientist
Federal Facilities Assessment Branch
Division of Health Assessment and Consultation

Victoria Smith
Environmental Health Scientist
Federal Facilities Assessment Branch
Division of Health Assessment and Consultation

Gary Campbell, Ph.D.
Environmental Health Scientist
Federal Facilities Assessment Branch
Division of Health Assessment and Consultation


REFERENCES

Agency for Toxic Substances and Disease Registry. See ATSDR.

ANL. 1992. Argonne National Laboratory. Final expanded site inspection report for the Naval Computer and Telecommunications Area Master Station--Eastern Pacific, Wahiawa, Oahu, Hawaii. Volume 2: Appendices. Environmental Research Division, Internal Report. May 1992.

ATSDR. 1995. Agency for Toxic Substances and Disease Registry. Naval Computer and Telecommunications Area Master Station, Eastern Pacific, Site summary, Wahiawa, Hawaii. Division of Health Assessment and Consultation. April 12, 1995.

ATSDR. 1998. Agency for Toxic Substances and Disease Registry. Public health assessment, Schofield Army Barracks, Oahu, Hawaii. February 11, 1998.

Earth Tech. 1997a. Earth Tech, Inc. Removal action: PCB contaminated soil at various transformer sites, NCTAMS EASTPAC, Oahu, Hawaii. CLEAN Contract No. N62742-94-D-0048, CTO No. 004. March 1997.

Earth Tech. 1997b. Earth Tech, Inc. Draft remedial investigation/feasibility study for Old Wahiawa Landfill, Building 6 Disposal Area, and Dump Site Near Building 293, NCTAMS EASTPAC, Wahiawa, Hawaii. Volumes I-IV. CLEAN Contract No. N62742-94-D-0048, CTO. No. 0003. May 1997.

Earth Tech. 1997c. Earth Tech, Inc. Draft engineering evaluation/cost analysis for removal action: PCB contamination at various transformer locations at NCTAMS EASTPAC, Oahu, Hawaii. CLEAN Contract No. N62742-94-D-0048. August 1997.

EPA. 1992. U.S. Environmental Protection Agency. Questions and answers on U.S. EPA's survey of electromagnetic fields in Waianae. July 21, 1992.

EPA. 1993. U.S. Environmental Protection Agency. HRS Documentation Record. August 12, 1993.

EPA. 1994. U.S. Environmental Protection Agency, OERR Hazardous Site Evaluation Division. Naval Computer and Telecommunications Area Master Station Eastern Pacific, Oahu, Hawaii. National Priorities List fact sheet. January 1994.

Fukumoto. 1998. Memorandum regarding sampling locations for Buildings 118, 119, 120, and 230. Enclosures include maps, HLA field notes for site inspection report of 1989, PWC sampling locations for effort in 1990, HLA sampling locations for effort in 1990, and PRC sampling results as part of the removal action. April 6, 1998.

HLA. 1989. Harding Lawson Associates. Site inspection, Naval Communications Area Master Station, Eastern Pacific Area, Wahiawa, Oahu, Hawaii. HLA Job No. 02176,193.06. Pearl City, HA. June 1989.

Maskarinec, G., J. Cooper, and L. Swygert. 1994. Investigation of increased incidence in childhood leukemia near radio towers in Hawaii: Preliminary observations. In: Journal of Environmental Pathology, Toxicology and Oncology. 13:33-37.

NAS. 1996. National Academy of Sciences. Press release: No adverse health effects seen from residential exposure to electromagnetic fields. October 31, 1996.

NEESA. 1986. Naval Energy and Environmental Support Activity. Initial assessment study, Naval Communication Area Master Station, Eastern Pacific Area, Honolulu, Oahu, Hawaii. UIC: N00950. NEESA 13-037. December 1986.

Ogden. 1992. Ogden Environmental and Energy Services Co., Inc. NCTAMS EASTPAC Buildings 236 and 262, final SI report. CLEAN Contract No. N62742-90-D-0019, CTO No. 0079. August 1992.

Ogden. 1995. Ogden Environmental and Energy Services Co., Inc. Remedial investigation/feasibility study at NCTAMS Wahiawa and NRTF Lualualei, NCTAMS EASTPAC, Oahu, Hawaii. Volumes I-V. CLEAN Contract No. N62742-90-D-0019, CTO No. 150. April 1995. [Volume V, Community Relations Plan, published in August 1995.]

PRC. 1992. PRC Environmental Management, Inc. NCTAMS EASTPAC Wahiawa, NRTF Lualualei, final removal action field report. CLEAN Contract No. N62474-88-D-5086, CTO No. 0036. January 15, 1992.

U.S. Environmental Protection Agency. See EPA.


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