NYC Law Department release
Independent mirror · updated as the City releases more · v1.3.2
☕ Buy me a coffee
← Document results/Unboxed/No folder label
Document / 35 pages

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
Page image
Scanned page image, NYC-WTC_000186158
OCR text

OCR status: ok · source: pdftotext

NYC 9/11 Public Portal Document

( ( (

Internal Review Draft

CONTAMINANT OF POTENTIAL CONCERN (COPC) EXCEEDANCE BY EVENT TABLE [ADD] - UNIT 5A, TEST 3B

Cleanup Criteria Pre-Cleaning R^BsFirst Cleaning Post - Secdrul Cleaning COPC Air Wipe MV Air |Wipe MV Wipe MWii Air Wipe MV Dioxin 0.001 ng/m3 4 ng/m2 ll_ PAH 0.2 ug/m3 300 ug/m2 it Asbestos 0.0009 f/cc n/a

Lead 1 ug/m3 25 ug/ft2 25 ug/ft2 43.5 2000 39.7 MMVF 0.01 f/cc Silica 4 ug/m3 LT 0.007

OL = Overloading of particulates MV = Microvac LT = Concentration is less than the specified level of detection

o H k; I to

S O o 1°

o Li? ro co

NYC-WTC_000186158

OCR can misread numbers and units. Confirm readings against the page image before using them.

NYC-WTC_000186158Source: NYC Law Department, mirrored locally

Related records

Browse subjects →

Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.

Same-box records

Filed elsewhere

More like this page

Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.

Others also read

Readers open these alongside this record — through an Ask answer, the same folder, or indexed similarity. Not a claim they are about the same event.

Compare copies and versions →