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Draft Preliminary Site Evaluation

Santa Susana Field Laboratory (SSFL)
Ventura County, California
CERCLIS NO. CAD074103771

December 3, 1999

Prepared by:

Division of Health Assessment and Consultation
Agency for Toxic Substances and Disease Registry
Atlanta, Georgia


TABLE OF CONTENTS

 

EXECUTIVE SUMMARY

PRELIMINARY SITE ASSESSMENT TEAM

INTRODUCTION

Scope of Report
     Site Operations and History
     Areas I, II, and III. History of Rocket Test Operations
     Area IV. History of Nuclear Research Operations and Incidents
Area Demographics

COMMUNITY CONCERNS AND HEALTH STUDIES

Community Concerns
Health Studies
     Community Health Studies
     Occupational Health Studies

EXPOSURE PATHWAYS ANALYSES

Special Consideration of Women and Children
Air Pathway
     Background
     Rocket Testing
     Waste Treatment and Disposal
     Accidental Releases and Spills
     Environmental Data
     Chemicals
     Radionuclides
     Potential for Human Exposure

Ground Water and Surface Water Pathway
     Background
     Environmental Data
     Chemicals
     Radionuclides
     Potential for Human Exposure

Soil and Sediment Pathway
     Background
     Environmental Data
     Chemicals
          Bell Canyon; Brandeis-Bardin Institute and Santa Monica Mountains
          Conservancy;
Former Sodium Disposal Facility
     Radionuclides
     Potential for Human Exposure

PUBLIC HEALTH IMPLICATIONS

CONCLUSIONS AND RECOMMENDATIONS

Air Pathway
Ground and Surface Water Pathway
Soil and Sediment Pathway
Recommendations

REFERENCES

APPENDIX A. Area I Thermal Treatment Facility

APPENDIX B. Other Documents Reviewed

APPENDIX C. Electronic Data Sets Reviewed

List of Figures

Figure 1. Facility Areas and Communities around Santa Susana Field Laboratory.
Figure 2. Area II rocket test stands and surrounding terrain.
Figure 3. The Former Sodium Reactor Experiment Containment Building
Figure 4. Population Characteristics in One Mile Area Surrounding the SSFL and Location of Ventura County, CA Census Tract 75.03.
Figure 5. Potential Exposure Pathways from the SSFL to Man.
Figure 6. Test firing of an Atlas Rocket Engine, September 7, 1999.
Figure 7. Location of TCE ground water plumes, NPDES sampling stations and surface water drainages.
Figure 8. Site of former Sodium Disposal Facility.

List of Tables

Table 1. Overview of Engine Testing Programs at the SSFL
Table 2. Chronological List of Radiological Incidents in Area IV of the SSFL.
Table 3. Demographic Statistics for Census Tract 75.03, Ventura County, CA
Table 4. Community Health Concerns Related to the Santa Susanna Field Laboratory
Table 5. Community Environmental Concerns and Observations
Table 6. Surface Water and Ground Water Sampling Stations Offsite of the SSFL Facility
Table 7. Offsite Distribution of Chemicals Commonly Found in Onsite Ground Water Wells
Table 8. Concentrations of Radionuclides in Ground Water and Surface Water Offsite of the SSFL
Table 9. Maximum Contaminant Concentrations in Surface (0 to 0.5') and Subsurface
(0.5 - 1') Soil and Sediment Samples in and near Bell Canyon

Table 10. Maximum Contaminant Concentrations in Soil and Sediment at Brandeis-Bardin Institute (BBI) and Santa Monica Mountains Conservancy (SMMC) from Sampling Conducted in 1992 [McLaren/Hart, 1993; 1995]
Table 11. Maximum Offsite Radionuclide Concentrations in Surface Soils and Sediments

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