NYC-WTC_000232249

NYC 9/11 Public Portal Document

TABLE OF CONTENTS

1.0 INTRODUCTION 1-1 1.1 Project Background and Evolution.......................................... 1-1 1.2 Project Purpose and Objectives............................................... 1-2 1.3 Overview of Air Quality Monitoring Programs and Features 1-2 2.0 SAMPLING SITES...................................................................... 2-1 2.1 Network Design..................................... 2-1 2.2 Siting Criteria and Network Operations 2-1 2.3 Locations of Monitoring Stations......... 2-1 3.0 SAMPLING PHASES............................... 3-1 3.1 Background................................................ 3-1 3.2 Phase I - Asbestos and COPC Abatement 3-1 3.3 Phase II - Structural Deconstruction....... 3-2 4.0 TARGET PARAMETERS/COPCs 4-1

5.0 SAMPLING AND ANALYSES METHODOLOGY 5-1 5.1 PMio Monitoring (“Real-Time’VContinuous)........ 5-2 5.1.1 Beta - Attenuation PMio Monitors (All Sites) 5-2 5.1.2 USEPA Reference Method PMio Monitor.... 5-3 5.2 Asbestos.......................................................................... 5-3 5.3 Metals.............................................................................. 5-3 5.4 Mercury (Gas/Vapor)..................................................... 5-3 5.5 Mercury (Vapor/Gas)..................................................... 5-4 5.6 Respirable Dust and Crystalline Silica......................... 5-4 5.7 Semivolatile Organics (PCDDs/PCDFs, PAHs, PCBs) 5-4 6.0 SAMPLING FREQUENCY.............................................. 6-1 6.1 Background..................................................................... 6-1 6.2 Phase I - Asbestos and COPC Abatement Phase........ 6-1 6.3 Phase II - Structural Deconstruction............................ 6-2 7.0 METEOROLOGICAL MONITORING 7-1

8.0 ACTION LEVELS AND MITIGATION MEASURES 8-1 8.1 Action Levels............................................. 8-1 8.1.1 Target Air Quality Levels................. 8-2 8.1.2 USEPA Site Specific Trigger Levels 8-2 9.0 EXCEEDANCE NOTIFICATION.............. 9-1

10.0 QUALITY ASSURANCE/QUALITY CONTROL 10-1 10.1 Overview............................................................... 10-1 10.2 Quality Assurance/Quality Control...................... 10-1

L2005-149 (051205) 5023623.2

C ITY_D E P_WO RB Y_C AN N ATA_SU B P_000114881

NYC-WTC_000232250