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Chain of custody form for DEP environmental samples, 2001

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Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.

NYC-WTC_000145695–000145868

Folder label: “NO INFO

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NYC 9/11 Public Portal Document

Post deeming Semiples - Two air samples were collected for asbestos. These samples were analyzed for PCM, TEM AHERA, and PCMe. The PCM results were all below the secondary numeric criterion of 0.01 f/cc. The TEM AHERA results indicate that one was below the detection limit and one was at the detection limit. Both samples were below the secondary numeric criterion of 0.022 S/cc. The PCMe results indicate that one was below the detection limit and one was at the detection limit. Both samples were below the primary clearance criterion of0.0009 S/cc.

Gypsum Bejore Cleaning Samples - There were no samples collected.

Post P‘ Cleaning Samples - Two air samples were collected. Gypsum was not detected.

Lead Before deeming Samples - There were no samples collected.

Post P‘ Cleaning Samples - Two air samples were collected for lead. Lead was not detected in either sample.

Alpha-Quartz Before Cleaning Samples - There were no samples collected.

Post P* Cleaning Samples - Two air samples were collected after the first cleaning. One sample exceeded the primary clearance criterion of .004 mg/m’. Alpha-quartz was not detected in the remaining sample.

Calcite Before deeming Semiples - There were no samples collected.

Post Cleaning Samples - Two air samples were collected after the first cleaning. Both samples were below the detection limit.

Cristobalite Before Cleaning Samples - There were no samples collected.

Post P‘ Cleaning Samples - Two air samples were collected after the first cleaning. Both samples were below the detection limit.

Tridymite Before Cleaning Samples - There were no samples collected.

Post f‘ Cleaning Samples - Two air samples were collected after the first cleaning. Both samples were below the detection limit.

MMVF Before deeming Samples - There were no samples collected.

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NYC-WTC_000145794

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NYC-WTC_000145794Source: NYC Law Department, mirrored locally

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