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The conclusions and recommendations are situation-specific and should not be considered applicable to any other situations.

Based on information currently available, GDHR concludes that the Dekalb Pest Control Services, Inc., HSI site currently poses no apparent public health hazard (ATSDR Public Health Hazard Category D [8]) since contamination at this site was remediated to health-based cleanup levels in October 1995 [9]. Data are to be collected that should provide confirmation that no other soil or groundwater contaminantion is present that could result in exposure to levels of contaminants that could pose a health hazard. Prior to corrective action, this site posed a public health hazard (ATSDR Public Health Hazard Category B [8]) to children who may have lived on or near the property who had direct contact with contaminated soil over a long period of time.

As a GEPD Hazardous Site Inventory (HSI) Class II site, the GEPD Director's determination regarding further corrective action is pending until additional investigation of current soil and groundwater conditions and remaining background levels of contamination is performed. When the results of this investigation are received, GEPD may reclassify this site as a Class 1 or Class III site, or may remove it from the HSI if it meets the risk reduction requirements [10]. Sites listed on the HSI are separated into four classes which signify the threat to human health and the environment: Class 1 sites have known human exposure to regulated substances or cause serious environmental problems; Class II sites require further evaluation before the need for corrective action is determined; Class III sites meet alternative risk reduction standards, and for Class IV sites, corrective action meeting risk reduction requirements is being or has been conducted under federal or state authority.

The responsible parties have been ordered to investigate background soil and groundwater levels and to submit the results of their investigation to GEPD. During the interim, they have also been encouraged to clean up their site. As a HSI Class II site, this site has not been designated as needing corrective action, so property owners will not immediately have to place notices on deeds or other property records.

  1. This site was remediated to below Type 1 RRS for chlordane in soil. The risk of current and future exposures to contaminated soil is limited following remediation completed in October 1995.
  2. Exposure to contaminated drinking water and air is highly improbable because there are no drinking water wells within 3 miles of the site and the contaminants of concern do not pose a threat in outdoor air.
  3. Exposure may have occurred through ingestion of contaminated soil particles and dust. A health hazard is assumed under worst case conditions for tenants of the house who owned and operated the business. We assume they likely came into contact with the most contaminated soil on a regular basis for an extended period of time. We do not know the current health status of the owners.
  4. The potential health effects from ingestion of soil or soil dust containing the contaminants of concern are not known. Regulatory levels and evidence for health outcomes will remain extremely limited because these chemicals are rarely found in soil except in spill or illegal disposal incidences.


The interpretation, advice, and recommendations presented in this health consultation are based on the data and information referenced and discussion with state environmental officials. Additional data could alter the recommendations. As additional data become available, they will be reviewed and additional requests will be responded to if received.

  1. Further evaluate this site as planned pursuant to the conditions of the Compliance Status Report in an effort to assess background contamination levels in soil and groundwater. GEPD will make decisions regarding this recommendation.
  2. Until this evaluation is completed, conduct public health education to inform current occupants of the potential exposure pathway and behaviors which may decrease their risk of exposure. GDHR will provide information as appropriate.
  3. If elevated levels of contaminants are found in soil, further remediate the soil. GEPD will consider this recommendation.


  1. Letter to Harold Reheis, EPD from Donald Guinyard, EPA, 12/26/91.

  2. OHM Remediation Services Corp., Removal activities report for Dekalb Pest Control Services, Inc.: Avondale Estates, Georgia, 12/95.

  3. Georgia Environmental Protection Division, Rules of Georgia Department of Natural Resources, hazardous site response, 1992 as amended.

  4. Agency for Toxic Substances and Disease Registry, Soil comparison values, expires 3/31/98.

  5. Agency for Toxic Substances and Disease Registry, Toxicological profile for chlordane (update), TP-93-103, 5/94.

  6. Agency for Toxic Substances and Disease Registry, ToxFAQs: aldrin/dieldrin CAS# 309-00-2 / 60-57-1, April 1993.

  7. Agency for Toxic Substances and Disease Registry, ToxFAQs: heptachlor and heptachlor epoxide, CAS# 76-44-8, 1024-57-3, April 1993.

  8. Agency for Toxic Substances and Disease Registry, Public health assessment guidance manual, 1992.

  9. Letter to Ms. Toni Douglas from Jim Brown, GEPD, 7/18/97.

  10. Georgia Environmental Protection Division, Hazardous site inventory, July, 1997.


Jane Perry-Britt


This DeKalb Pest Control Services, Inc., Health Consultation was prepared by the Georgia Department of Human Resources 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, SPS, SSAB, DHAC

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

Richard Gillig

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