The order the City kept.

NYC-WTC_000140012

Page of handwritten notes containing names, phone numbers, and brief remarks related to HVAC inspection activities.

NYC-WTC_000140013

Technical specifications for the application of encapsulant coatings on ventilation system components.

NYC-WTC_000140014

Technical specifications for the application of encapsulant coatings on ventilation system components, including safety and material requirements.

NYC-WTC_000140015

Technical comments outlining procedures for isolating work zones, maintaining negative pressure, and air testing during HVAC system cleaning.

NYC-WTC_000140016

Technical specifications detailing work zone dismantling, air testing protocols, worker certification requirements, and personal protective equipment usage.

NYC-WTC_000140017

Blank form used to record building details and ventilation system characteristics during inspections.

NYC-WTC_000140018 – NYC-WTC_000140019

Detailed inspection checklist for exhaust air outlet location, accessibility, and contamination conditions.

NYC-WTC_000140020

Inspection checklist for HVAC system components including mechanical room conditions and outside air intake details.

NYC-WTC_000140021

Inspection checklist for HVAC system components including mechanical room conditions, outside air intake accessibility, WTC dust presence, and component condition documentation.

NYC-WTC_000140022

Summary page of HVAC inspection documenting general impressions and cleaning recommendations based on WTC dust findings.

NYC-WTC_000140023

Inspection form for HVAC components including outside air intake and exhaust outlets, assessing accessibility and presence of WTC dust contamination.

NYC-WTC_000140024

Reference key defining notation codes (NP, NF, I, U) used in HVAC ventilation system inspection documentation.

NYC-WTC_000140025

Additional ventilation system evaluation form for systems not covered in prior forms, including mechanical room assessment and WTC dust findings.

NYC-WTC_000140026

Draft cleaning protocol specifying isolation techniques, vacuum collection methods, HEPA equipment use, and contamination control procedures for ventilation ducts.

NYC-WTC_000140027

Technical guidance on maintaining air velocity and negative pressure during duct cleaning, HEPA device specifications, and dust containment methods.

NYC-WTC_000140028

Detailed procedures for isolating ventilation zones, sealing exhaust grilles, cleaning roof-mounted components, and managing contaminated waste.

NYC-WTC_000140029 – NYC-WTC_000140035

Instructional guidance for completing ventilation system evaluation forms, including documentation of prior inspections, maintenance records, and WTC dust assessment.