HEALTH CONSULTATION

Active Soil Gas Data Review

CHILLUM PERC SITE
(a/k/a CHILLUM PERCHLOROETHYLENE)
CHILLUM, PRINCE GEORGES COUNTY, MARYLAND
EPA FACILITY ID: MDN000305887

January 12, 2004

Prepared by:

Exposure Investigation and Consultation Branch
Division of Health Assessment and Consultation
Agency for Toxic Substances and Disease Registry

TABLE OF CONTENTS

SUMMARY AND STATEMENT OF ISSUES

BACKGROUND

DISCUSSION

ATSDR'S EVALUATION PROCESS

OVERVIEW OF INDOOR AIR VAPOR INTRUSION PATHWAY

ENVIRONMENTAL DATA EVALUATION

Soil Vapor
Perc
Benzene
MTBE
Indoor Air

CHILD HEALTH CONSIDERATIONS

ENVIRONMENTAL DATA GAPS

CONCLUSIONS

RECOMMENDATIONS

PUBLIC HEALTH ACTION PLAN

Actions Taken
Actions Planned

PREPARERS OF REPORT

REFERENCES

FIGURES

Figure 1. Demographic Statistics
Figure 2. Area Map

TABLES

APPENDIX A: ATSDR'S COMPARISON VALUES AND DEFINITIONS

APPENDIX B: GLOSSARY OF TERMS FOR VAPOR INTRUSION

APPENDIX C: ATSDR'S LEVEL OF PUBLIC HEALTH HAZARD

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