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PUBLIC HEALTH ASSESSMENT

POMONA OAKS WELL CONTAMINATION
GALLOWAY TOWNSHIP, ATLANTIC COUNTY, NEW JERSEY


CONCLUSIONS

From the information reviewed, the Pomona Oaks well contamination site is judged to have been be a public health hazard exclusively on the basis of past exposure of intermediate duration, through the ingestion pathway, to volatile organic compounds (VOCs) present in domestic well-water, and past exposure of acute duration, through the inhalation pathway, to VOCs present in domestic well water. Additionally, the site represents no apparent public health hazard under present conditions.

Remedial activities conducted at the site by the ACHD, NJDEPE, and USEPA, specifically the introduction of a public water supply to the area in 1985, and the construction of a new production well for the subdivision in 1989, have eliminated the human exposure pathways associated with the site. Additionally, current data indicate that groundwater in the Subdivision and immediate environs is not presently contaminated to a degree which would constitute a public health hazard. Furthermore, the selected remedial alternative recommended in the Record of Decision (no further remedial action) is consistent with preserving and maintaining the public health.

Analysis of New Jersey Cancer Registry data for Galloway Township indicated that the incidence rates for those cancers listed were below expected (State average) rates for the period 1979 through 1988.

Levels of benzene detected in domestic groundwater and the shower air data compiled by the NJDOH in 1983-4 imply exposure doses at the site may have posed a low theoretical increase in the projected lifetime excess cancer risk for the ingestion and inhalation pathways. Additionally, maximum levels of benzene detected in domestic wells imply exposure dosages which may have equaled or exceeded the "no observed adverse effect level" for oral exposure of intermediate duration.

Maximum levels of 1,2-dichloroethane detected in potable wells imply exposure doses at the site may have posed a low theoretical increase in the projected lifetime excess cancer risk for the ingestion pathway.

Oral exposure to contaminants of concern at the site other than benzene and 1,2-Dichloroethane would not be expected to produce adverse carcinogenic or noncarcinogenic health effects based upon concentration and exposure duration.

There are no data to quantify the exposure dosages associated with inhalation exposure to contaminants of concern volatilizing from well water during domestic activities other than showering which utilize water.

RECOMMENDATIONS

Health Activities Recommendation Panel (HARP) Statement

The Pomona Oaks Well Contamination site, Galloway Township, New Jersey has been reviewed by ATSDR's Health Activities Recommendation Panel for appropriate follow-up with respect to health activities. This site is being considered for follow-up health activities at this time. Specifically, should ATSDR decide to expand the benzene subregistry of the National Exposure Registry, this site will be considered for inclusion in that subregistry.

Public Health Actions

The Public Health Action Plan (PHAP) for the Pomona Oaks Well Contamination site contains a description of the actions to be taken by ATSDR and/or NJDOH at or in the vicinity of the site subsequent to the completion of this Public Health Assessment. The purpose of the PHAP is to ensure that this health assessment not only identifies public health hazards, but provides a plan of action designed to mitigate and prevent adverse human health effects resulting from exposure to hazardous substances in the environment. Included, is a commitment on the part of ATSDR/NJDOH to follow up on this plan to ensure that it is implemented. The public health actions to be implemented by ATSDR/NJDOH are as follows:

Public Health Actions Taken

  1. Environmental data and proposed remedial activities have been evaluated within the context of human exposure pathways and relevant public health issues.


  2. The NJDOH initiated the review of relevant health outcome databases with regard to the Pomona Oaks Subdivision (Galloway Township).

Public Health Actions Planned

  1. Based upon past exposure and the concerns of the community, the NJDOH will transmit a letter to ATSDR nominating this site for physician health education follow-up.


  2. Residents who expressed health concerns regarding past exposures at the Pomona Oaks site will be contacted and asked to provide additional specific information regarding their individual situations. Contact persons at the NJDOH and the ATSDR Regional Offices will be provided. ATSDR and/or the NJDOH will invite discussion with concerned residents to determine what follow-up or resources are applicable to individual concerns about their exposures.


  3. ATSDR and the NJDOH will coordinate with the appropriate environmental agencies to develop plans to implement the cease/reduce exposure and site characterization recommendations contained in this health assessment.


  4. ATSDR will provide an annual follow up to this PHAP, outlining the actions completed and those in progress. This report will be placed in repositories that contain copies of this health assessment, and will be provided to persons who request it.


  5. The ATSDR and/or the NJDOH will reevaluate and expand the Public Health Action Plan (PHAP) when needed. New environmental, toxicological, health outcome data, or the results of implementing the above proposed actions may determine the need for additional actions at this site.

CERTIFICATION

The Public Health Assessment for the Pomona Oaks Well Contamination site was prepared by the New Jersey Department of Health 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 public health assessment was initiated.

Gregory V. Ulirsch
Technical Project Officer, SSAB, RPB, DHAC

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

Robert C. Williams
Division Director, DHAC, ATSDR




PREPARERS OF REPORT

Preparer of Report:

James Pasqualo
Project Manager: ATSDR Health Assessment Project
Environmental Health Service
New Jersey Department of Health

ATSDR Regional Representative:

Arthur Block
Senior Regional Representative; Region 2
Regional Operations
Office of the Assistant Administrator

ATSDR Technical Project Officer:

Gregory V. Ulirsch
Environmental Health Specialist
Remedial Programs Branch
Division of Health Assessment and Consultation


REFERENCES

  1. Final Remedial Investigation Report: Pomona Oaks Well Contamination Site. EBASCO Services Inc. USEPA Contract 68-01-7250. May 1990.


  2. Record of Decision: Pomona Oaks Well Contamination Site. USEPA Region II. September 1990.


  3. Community Relations Plan: Pomona Oaks Well Contamination Site. EBASCO Services Inc. USEPA Contract 68-01-7250. September 1988.


  4. Draft Risk Assessment: Pomona Oaks Well Contamination Site. EBASCO Services Inc. USEPA Contract 68-01-7250. January 1990.


  5. Agency for Toxic Substances and Disease Registry. Draft Toxicological Profile For Benzene. Atlanta, Georgia: Agency for Toxic Substances and Disease Registry, October 1991.


  6. Agency for Toxic Substances and Disease Registry. Draft Toxicological Profile for Chloroform. Atlanta, Georgia: Agency for Toxic Substances and Disease Registry, October 1991.


  7. Agency for Toxic Substances and Disease Registry. Toxicological Profile for 1,2-Dichloroethane. Atlanta, Georgia: Agency for Toxic Substances and Disease Registry, December 1989, DHHS publication no.: (PHS)TP-89-10.


  8. Agency for Toxic Substances and Disease Registry. Toxicological Profile for 1,1-Dichloroethane. Atlanta, Georgia: Agency for Toxic Substances and Disease Registry, December 1990, DHHS publication no.: (PHS)TP-90-12.


  9. Agency for Toxic Substances and Disease Registry. Toxicological Profile for 1,1-Dichloroethene. Atlanta, Georgia: Agency for Toxic Substances and Disease Registry, December 1989, DHHS publication no.: (PHS)TP-89-11.


  10. Agency for Toxic Substances and Disease Registry. Toxicological Profile for 1,1,2-Trichloroethane. Atlanta, Georgia: Agency for Toxic Substances and Disease Registry, December 1989, DHHS publication no.: (PHS)TP-89-24.


  11. Bishop, B.L., and Zagraniski, R.T. Pomona Oaks Exposure Assessment. Environmental Health Program, Division of Epidemiology and Disease Control, New Jersey Department of Health. October 1984.


  12. Clayton G.D., and Clayton F.E. Patty's Industrial Hygiene and Toxicology. Third Edition, New York: John Wiley & Sons. 1978.

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