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PUBLIC HEALTH ASSESSMENT

LENZ OIL SERVICE, INC.
LEMONT, DUPAGE COUNTY, ILLINOIS


CONCLUSIONS

The Lenz Oil Service site near Lemont, Illinois, poses no apparent public health hazard because there is no human exposure to contaminants at levels of health concern at this time. Before the availability of a community water supply in 1988, some residents using private wells may have been exposed to low-level concentrations of groundwater contaminants. Presently, there are no known exposures to the residual surface soil contamination found at the site. Although much of the hazardous waste was removed or incinerated, groundwater continues to be contaminated by remaining subsoil contamination and by a nonaqueous layer of contaminants floating on the groundwater. In the future, the contaminated groundwater could pose a health threat due to its potential for continued down gradient migration to other private wells still used for drinking water.

Some gaps are in the fences, and people can enter the site.


RECOMMENDATIONS

Cease/Reduce Exposure Recommendations

  1. Properly seal all private wells located within the contaminant plume.
  2. Disallow applications for permits to drill new wells into the contaminated aquifer until groundwater remediation is completed.
  3. Secure the site; gaps exist in present wood, wire, and cyclone types of fencing.
  4. Maintain a good vegetative ground cover on site to help reduce contaminant migration and possible exposure.

Site Characterization Recommendations

  1. Continue the groundwater monitoring program to augment the data which currently exist. This additional data could better characterize the movement of groundwater contamination off site and provide current levels of contamination to address potential adverse health effects to those individuals who may be exposed.
  2. Provide additional contaminant concentration information collected during future groundwater and soil cleanup to IDPH for consideration.

Public Health Actions

The Public Health Action Plan (PHAP) for the Lenz Oil Service, Inc., site contains a description of actions to be taken by ATSDR or IDPH at and near the site subsequent to the completion of this public health assessment. The purpose of the PHAP is to ensure that this public health assessment not only identifies public health hazards, but also provides a plan of action designed to mitigate and prevent adverse health effects resulting from exposure to hazardous substances in the environment. Included is a commitment on the part of ATSDR and IDPH to follow-up on this plan to ensure that it is implemented.

ATSDR and IDPH will coordinate with the state and federal environmental agencies to carry out the recommendations made in this assessment. No other public health actions have been identified as necessary at this time. ATSDR and IDPH will re-evaluate and expand the PHAP when needed. New environmental, toxicological, or health outcome data, or the results of implementing the proposed actions and recommendations may determine the need for additional actions at this site.


PREPARER OF REPORT

Catherine Copley
Environmental Toxicologist
Illinois Department of Public Health


REVIEWERS OF REPORT

Bruce C. Barrow
Ken Runkle
Environmental Toxicologists
Illinois Department of Public Health


ATSDR REGIONAL REPRESENTATIVE

Louise Fabinski
Regional Operations
Office of the Assistant Administrator


ATSDR TECHNICAL PROJECT OFFICERS

Gail Godfrey
William Greim
Environmental Health Scientists
Division of Health Assessment and Consultation


CERTIFICATION

This Lenz Oil Service Public Health Assessment was prepared by the Illinois Department of Public 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 begun.

Gail D. Godfrey
Technical Project Officer
Division of Health Assessment and Consultation
ATSDR

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

Richard E. Gillig
Chief, State Programs Section
Division of Health Assessment and Consultation
ATSDR


REFERENCES

  1. Agency for Toxic Substances and Disease Registry, Public Health Assessment Guidance Manual. Atlanta, Georgia. March 1992.

  2. Agency for Toxic Substances and Disease Registry. Draft and Final Toxicological Profiles.

  3. Ebasco Services, Inc. Lenz Oil Site Technical Memorandum 3B. Prepared for the Illinois Environmental Protection Agency. January 15, 1992.

  4. Environmental Resources Management - North Central, Inc. Scope of Work - Groundwater Investigation at Lenz Oil of Lemont, Illinois. January 18, 1989.

  5. Environmental Resources Management - North Central, Inc. Remedial Investigation/Feasibility Study Work Plan at Lenz Oil Service, Inc. of Lemont, Illinois. January 22, 1990.

  6. Environmental Resources Management - North Central, Inc. Technical Memorandum No. l: Description of Current Situation Report: Remedial Investigation: Phase I, Task 1. May 2, 1991.

  7. Environmental Resources Management - North Central, Inc. Technical Memorandum No. 2: Soil Gas Investigation: Remedial Investigation: Phase I, Task 1. May 2, 1991.

  8. Environmental Resources Management - North Central, Inc. Technical Memorandum No. 3A: Remedial Investigation: Phase I, Task 2. July 2, 1991.

  9. Environmental Resources Management - North Central, Inc. Phase II Work Plan, Part A: Remedial Investigation/Feasibility Study. July 2, 1991.

  10. Environmental Resources Management - North Central, Inc. Technical Memorandum No. 3A: Remedial Investigation: Phase 1, Task 2. January 15, 1992.

  11. Environmental Resources Management - North Central, Inc. Alternative Array Document. January 16, 1992.

  12. Environmental Resources Management - North Central, Inc. Remedial Investigation Report, Revision 0. July 16, 1992.

  13. Environmental Resources Management - North Central, Inc. Remedial Investigation Report, Revision 1. October 16, 1992.

  14. Environmental Resources Management - North Central, Inc. Technical Memorandum No. 3A: Remedial Investigation: Phase 1, Task 2. January 15, 1992.

  15. Environmental Resources Management - North Central, Inc. Feasibility Study Report. November 19, 1992.

  16. HARZA Environmental Services. Technical Review of Scope of Work (Draft) Groundwater Investigation Lenz Oil Service, Inc. Site, Lemont, Illinois. November 1, 1988.

  17. IDPH Files. Lenz Oil Service, Inc., Maywood Regional and Springfield Central Offices.

  18. IEPA Background Sheet. Attached Figures 1 and 2. January 23, 1987.

  19. IEPA Fact Sheets. Lenz Oil Service. November, 1986 and March, 1987.

  20. IEPA Documentation Records for Hazard Ranking System. October 29, 1985.

  21. IEPA Responsiveness Summary of Public Hearing on April 30, 1987. August 10, 1987.

  22. IEPA Potential Hazardous Waste Site Preliminary Assessment. IEPA, Springfield, Illinois. October 23, 1984.

  23. IEPA Potential Hazardous Waste Site Inspection Report. IEPA, Springfield, Illinois. August 14, 1987.

  24. IEPA Files. Lenz Oil Service, Inc./DuPage County. Division of Land Pollution Control, Springfield, Illinois.

  25. IEPA Record of Decision. Immediate Remedial Action Required. January 17, 1986 [Addendum to ROD on January 17, 1987].

  26. Radian Corporation. Lenz Oil Ambient Air Baseline Analytical Report. August, 1987.

  27. USEPA. Toxic Chemical Release Inventory. National Library of Medicine's TOXNET System. December, 1993.

  28. Wehran Engineering Corporation. Immediate Removal Investigation Work Plan for the Lenz Oil Service Site, Lemont, Illinois. March, 1986.

  29. Wehran Engineering Corporation. Summary Report of Sampling Activities at the Lenz Oil Service Site. WEC, Indianapolis, Indiana. January, 1987.

  30. Environmental Resources Management-North Central, Inc. Lenz Oil Feasibility Study Report. Lenz Oil Site, Lemont, Illinois. Volumes I and II. February, 1997.

  31. USEPA Region V. Lenz Oil Services, Inc. Site: Draft Proposed Plan. August, 1997.

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