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PUBIC HEALTH ASSESSMENT

TRW MICROWAVE, INC.
(BUILDING 825)
SUNNYVALE, SANTA CLARA COUNTY, CALIFORNIA
EPA FACILITY ID: CAD009159088

January 10, 1994

Prepared by:

California Department of Health Services
Under Cooperative Agreement with the
Agency for Toxic Substances and Disease Registry


TABLE OF CONTENTS

LIST OF TABLES

LIST OF FIGURES

SUMMARY

BACKGROUND

COMMUNITY HEALTH CONCERNS

ENVIRONMENTAL CONTAMINATION AND OTHER HAZARDS

PATHWAYS ANALYSES

PUBLIC HEALTH IMPLICATIONS

CONCLUSIONS

RECOMMENDATIONS

PUBLIC HEALTH ACTIONS

PREPARERS OF REPORT

CERTIFICATION

REFERENCES

APPENDIX A: TABLES

APPENDIX B: FIGURES

APPENDIX C: DEVELOPMENT OF THE INDOOR AIR STUDY

APPENDIX D: ANALYSIS OF THE NOVEMBER 1992 INDOOR AIR SAMPLING AT SAN MIGUEL SCHOOL

APPENDIX E: SUMMARY OF RESPONSE DURING PUBLIC COMMENT PERIOD


TABLE OF TABLES

1. VOCs IN SOILS ON THE FORMER TRW PROPERTY

2. TOTAL METALS OM SOIL ON THE FORMER TRW PROPERTY

3. SOLUBLE METALS FROM SOIL ON THE FORMER TRW PROPERTY

4. GROUNDWATER CONTAMINATION AT THE TRW SITE

5. METALS IN GROUNDWATER ON THE FORMER TRW PROPERTY

6. GROUNDWATER VOC CONTAMINATION OFF-SITE

7. METALS IN GOUNDWATER OFF SITE

8. OFF-SITE SOIL GAS FLUX MEASUREMENTS

9. AIR SAMPLING DATA AT SAN MIGUEL AND CHERRY CHASE SCHOOLS

10. AIR SAMPLING DATA AT SAN MIGUEL AND CHERRY CHASE SCHOOLS DURING DIFFERENT VENTILATION MANIPULATIONS

11. ACTION LEVELS FOR AIRE SAMPLING AT SAN MIGUEL SCHOOL


TABLE OF FIGURES

1. THREE COMPANY SITE AND ASSOCIATED STUDY AREA

2. SURFACE EMISSION ISOLATION FLUX CHAMBER SAMPLE LOCATION MAP

3. INTERPRETATION SCHEME FOR SAN MIGUEL SCHOOL AIR SAMPLING RESULTS

4. ANALYSIS OF NOVEMBER 11, 1992 AIR SAMPLING USING INTERPRETATION FLOWCHART

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