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Contaminant of Potential Concern exceedance table, Unit 2A

Machine-extracted title · confidence 90%

Table comparing contaminant levels before and after cleaning for Unit 2A, including dioxin, PAHs, asbestos, and lead.

NYC-WTC_000186138–000186172
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Scanned page image, NYC-WTC_000186144
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NYC 9/11 Public Portal Document

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CONTAMINANT OF POTENTIAL CONCERN (COPC) EXCEEDANCE W EVENT TABLE [ADD] - RETAIL MATTRESS STORE, TEST E (Cleaning of vinyl floor tile and window ledge wet wipe using water only)

Cleanup Criteria Pre-Cleaning Pre-Water Post - First Cleaning COPC Air |Wip^ MV Air [Wipe " MV Wipe Air Wipe MV Dioxin 0.001 ng/m3 4 ng/m2

PAH 0.2 ug/m3 300 ug/m2 2.7 Asbestos 0.0009 f/cc n/a OL OL Lead 1 ug/m3 25 ug/ft2 25. ug/ft2 38.9 38.2 77 MMVF 0.01 f/cc n/a 11.71® J 92.184 / Silica 4 ug/m3 n/a

OL = Overloading of particulates MV = Microvac

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NYC-WTC_000186144

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NYC-WTC_000186144Source: NYC Law Department, mirrored locally

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