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_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_000150092 – NYC-WTC_000150093

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

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_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_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_000150148

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

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_000150171

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

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.