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Legal hold notice for WTC documents, undated

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Notice instructing staff to preserve original World Trade Center documents for potential legal actions against the City.

NYC-WTC_000148192–000148619

Folder label: “AIR ASBESTOS MONITORING REPORTS

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NYC 9/11 Public Portal Document

Ambient Air Monitoring:

Levels B5 & B6: Oxygen; DiHydrogen Sulfide; Explosive atmosphere; Carbon Monoxide; Photo Ionizable Organic Compounds; Freon 22 utilizing direct reading field instrumentation.

Level B6 only: In addition to above, one air sample was taken for analytical analysis. Results: See attachments.

Air Monitoring in surrounding Boroughs: 9/13 - 11/16 :.. Attachment 6

Air monitoring for Volatile Organic Compounds, Acid Gases and Metals were performed at the locations listed below on a daily basis.

** Note: These air samples are grab samples that were performed everyday at the locations listed below. EPA method TO14 and TO15 were used for sampling and analysis of VOC's. Results were used strictly for emergency response purposes to determine if any immediate actions were required. The sampling results should not used for comparison with NYS or EPA Ambient Air Contaminant Guidelines for long term health assessment studies.

Manhattan: Central Park North and Lenox Ave. Queens: Broadway and 31 Street Bronx: 138 Street & 3 Avenue Brooklyn: Berry Street & North 11 Street Brooklyn: Atlantic Avenue & Smith Street Staten Island: Bay Street & Victory Blvd.

NYC-WTC_000148580

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NYC-WTC_000148580Source: NYC Law Department, mirrored locally

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