Vapor Intrusion Issues at Brownfield Sites

1,15

MB

77

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4165

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Interstate Technology and Regulatory Council

2003

rok

TABLE OF CONTENTS

ACKNOWLEDGEMENTS i

EXECUTIVE SUMMARY iii

1.0 INTRODUCTION . 1

2.0 INDOOR AIR QUALITY . 3

2.1 Indoor Air and Building Design . 3

2.2 Vapor Risks. 4

2.3 Brownfields and Vapor Intrusion 5

3.0 THE CONCEPT OF RISK 6

3.1 Exposure Assessment 6

3.2 Mathematical Modeling 7

3.3 Sampling . 8

3.4 Risk Communication 9

4.0 VAPOR INTRUSION ABATEMENT STRATEGIES. 11

5.0 STATE APPROACHES TO VAPOR INTRUSION ISSUES . 14

5.1 California 15

5.2 Washington . 15

5.3 New York 16

5.4 South Carolina 18

6.0 FEDERAL APPROACHES TO VAPOR INTRUSION ISSUES. 22

6.1 Review of Evolving EPA Guidance . 22

6.2 Review of the DOE Approach to Vapor Intrusion 24

7.0 VAPOR INTRUSION APPROACHES IN A EUROPEAN UNION COUNTRY: THE GERMAN

EXAMPLE . 25

7.1 Overview of the Federal Soil Protection Act 26

7.2 Assessment, Cleanup, and Liability 26

8.0 CONCLUSIONS 27

9.0 REFERENCES 27