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NYC-WTC_000199812

Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000199812–000199860
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NYC 9/11 Public Portal Document

TABLE OF CONTENTS

Page

Figures iv

Tables V

Acknowledgements vii

1.0 Introduction 1

2.0 Study Design and Sampling Strategy 3 2.1 The Low Exposure Building 3 2.2 The High Exposure Building 3 2.3 Sampling Strategy.............. 5

3.0 PCDDs, PCDFs, and PCBs 7 3.1 Collection......................................... 7 3.1.1 Surface Wipe......................... 7 3.1.2 Surface Dust......................... 7 3.1.3 Bulk Dust ............................. 7 3.2 Analysis ........................................... 7 ! 3.2.1 Surface Wipe......................... 7 3.2.2 Surface and Bulk Dust ......... 8 I 3.3 Results ............................................. 8 3.3.1 Surface Wipe......................... 8 3.3.2 Surface Dust and Bulk Samples 9

4.0 Inorganic Metals .. 11 4.1 Collection............................................... ...11 4.1.1 Surface Wipe............................... .. 11 4.1.2 Surface Dust............................... .. 11 4.1.3 Bulk Dust ................................... .. 11 4.2 Analysis ................................................. .. 11 4.2.1 Surface Wipe............................... .. 11 4.2.2 Surface Dust and Bulk Samples .. .. 12 4.3 Results of Surface Dust and Bulk Samples .. 12

5.0 Asbestos Measurements...................... 15 5.1 Asbestos in Passive Air Samples 15 5.1.1 Sample Collection........ 15 5.1.2 Analysis ...................... 15 5.1.3 Results......................... 16

ii

CITY_21MC100_006730083

NYC-WTC_000199813

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NYC-WTC_000199813Source: NYC Law Department, mirrored locally

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