The order the City kept.

NYC-WTC_000150063

Instructional notice requiring the retention of scanned World Trade Center documents for potential future legal actions against the City.

NYC-WTC_000150064

A standard form letter used by the Department of Environmental Protection for official communications.

NYC-WTC_000150065 – NYC-WTC_000150066

Guidance issued by DEP to building owners outlining procedures for cleaning dust and debris potentially containing asbestos.

NYC-WTC_000150067 – NYC-WTC_000150068

Instructions for building owners regarding the safe removal of debris inside structures following the World Trade Center attack.

NYC-WTC_000150069 – NYC-WTC_000150070

Overview of multi-agency air, water, and dust sampling efforts in Lower Manhattan to assess pollutant levels after the disaster.

NYC-WTC_000150071 – NYC-WTC_000150072

Summary of environmental sampling and benchmark standards used by city and federal agencies to evaluate conditions in Battery Park City.

NYC-WTC_000150073

Advisory to building owners south of 14th Street regarding HVAC filter replacement and asbestos contamination review procedures.

NYC-WTC_000150074

DEP notice to Manhattan building owners south of 14th Street regarding HVAC filter replacement and professional assessment of possible indoor or roof contamination before clean-up.

NYC-WTC_000150075

Health Department press statement confirming that airborne contaminant levels in Lower Manhattan remain below public health concern levels despite smoke.

NYC-WTC_000150076

Advisory outlining safety protocols for WTC debris removal, including wind speed limits, HVAC shutdown requirements, and window sealing instructions.

NYC-WTC_000150077

DEP public notice advising contractors and building occupants on safety protocols for exterior facade clean-up operations.

NYC-WTC_000150078

A standard form letter used by the Department of Environmental Protection for official communications.

NYC-WTC_000150079 – NYC-WTC_000150080

Guidance issued by DEP to building owners outlining procedures for cleaning dust and debris potentially containing asbestos.

NYC-WTC_000150081 – NYC-WTC_000150082

Instructions for building owners regarding the safe removal of debris inside structures following the World Trade Center attack.

NYC-WTC_000150083 – NYC-WTC_000150090

Instructions for building owners regarding the safe removal of debris inside structures following the World Trade Center attack.

NYC-WTC_000150091

Department of Environmental Protection advisory outlining requirements for asbestos air sampling personnel and clearance standards.

NYC-WTC_000150092 – NYC-WTC_000150093

Public notice from the Department of Environmental Protection providing guidelines for building facade cleaning operations.

NYC-WTC_000150094 – NYC-WTC_000150097

Forwarded internal memo providing guidance to DEP staff regarding building reopening south of 14th Street.

NYC-WTC_000150098 – NYC-WTC_000150099

DEP directive instructing building owners in Lower Manhattan on restarting HVAC systems and managing potential asbestos contamination.

NYC-WTC_000150102

DEP notice advising building owners in Lower Manhattan on HVAC restart procedures and asbestos contamination review protocols.

NYC-WTC_000150103

DEP notice advising owners on HVAC maintenance and asbestos contamination review for buildings south of 14th Street.

NYC-WTC_000150104 – NYC-WTC_000150105

DEP report detailing the methodology and standards for monitoring outdoor air quality for asbestos fibers in Lower Manhattan.

NYC-WTC_000150106 – NYC-WTC_000150108

DEP report explaining ambient air monitoring for asbestos and the use of indoor standards to characterize outdoor levels.

NYC-WTC_000150109 – NYC-WTC_000150112

Department of Environmental Protection report detailing ambient outdoor air monitoring for asbestos fibers.

NYC-WTC_000150113 – NYC-WTC_000150116

DEP report on ambient outdoor air monitoring for asbestos and reference to indoor clearance standards.

NYC-WTC_000150118 – NYC-WTC_000150119

Department of Environmental Protection memo coordinating with the Department of Health regarding building re-occupancy.

NYC-WTC_000150120 – NYC-WTC_000150121

Department of Environmental Protection memo instructing building owners on debris clean-up procedures.

NYC-WTC_000150122 – NYC-WTC_000150123

Department of Environmental Protection memo outlining procedures for cleaning asbestos-containing material.

NYC-WTC_000150124

Notice to building owners south of 14th Street regarding HVAC filter replacement and asbestos contamination review following the WTC collapse.

NYC-WTC_000150125

Official notice to building owners south of 14th Street advising on HVAC restart procedures and asbestos contamination review after the WTC collapse.

NYC-WTC_000150126 – NYC-WTC_000150130

Cover sheet for a fax transmission from the Mayor's Office of Environmental Coordination dated September 26, 2001.

NYC-WTC_000150131 – NYC-WTC_000150132

Letter informing building owners that DEP surveys identified visible World Trade Center debris accumulations on their property exteriors.

NYC-WTC_000150133 – NYC-WTC_000150134

Department of Environmental Protection memo outlining procedures for cleaning asbestos-containing material.

NYC-WTC_000150135 – NYC-WTC_000150144

Department of Environmental Protection letter requesting copies of environmental hazard assessments for a specific site.

NYC-WTC_000150145 – NYC-WTC_000150147

Notification from the EPA confirming that air samples taken at a residence south of Canal Street did not exceed asbestos clearance levels.

NYC-WTC_000150148

Notice to building owners south of 14th Street regarding HVAC filter replacement and asbestos contamination review following the WTC collapse.

NYC-WTC_000150149 – NYC-WTC_000150154

Index or directory listing of EPA-related correspondence and documents regarding HVAC testing and cleaning procedures for WTC response.

NYC-WTC_000150155

Notice to building owners south of 14th Street regarding HVAC filter replacement and asbestos contamination review following the WTC collapse.

NYC-WTC_000150156 – NYC-WTC_000150157

Notice advising building owners on restarting air circulation systems and managing potential asbestos contamination in buildings south of 14th Street.

NYC-WTC_000150158 – NYC-WTC_000150162

Notice advising building owners on restarting air circulation systems and managing potential asbestos contamination in buildings south of 14th Street.

NYC-WTC_000150163 – NYC-WTC_000150168

Internal memo draft addressed to the Commissioner regarding environmental compliance actions and correspondence drafts dated October 15, 2001.

NYC-WTC_000150169 – NYC-WTC_000150170

Letter from the Department of Housing Preservation and Development regarding air quality surveys and EPA cleaning services for properties affected by September 11.

NYC-WTC_000150171

Request to building owners for copies of environmental hazard assessments and clean-up summaries following a previous DEP request for documentation.

NYC-WTC_000150172 – NYC-WTC_000150183

Letter informing building owners that DEP surveys identified visible World Trade Center debris accumulations on their property exteriors requiring cleanup.

NYC-WTC_000150184 – NYC-WTC_000150186

Request to the Department of Transportation for a fee waiver regarding sidewalk closures needed for exterior debris cleaning operations near the WTC site.

NYC-WTC_000150187 – NYC-WTC_000150188

Notification to residents regarding cancelled or missed scheduled cleaning and testing appointments for the World Trade Center dust removal program.

NYC-WTC_000150189

Request to the Department of Transportation for a fee waiver regarding sidewalk closures needed for exterior debris cleaning operations near the WTC site.