PAH (benzo-a-pyrene 0.034 ug/m3 3.4 ug/m3
equivalent)
Note 1: A rolling average after the first week of sampling, except for PM-10 and PM-2.5.
Note 2: A 24-hour value.
Note 3: If a chromium value is in excess of the Target Air Quality Level (0.6 ug/m3), this will result in a
stoppage of work; and, that sample will be speciated for chromium `VI to determine that its concentration
does not exceed the USEPA Site Specific Trigger Level for chromium VI, and the appropriate actions
pertaining to an exceedance of the USEPA Site Specific Trigger Level will continue to be conducted.
11
NYC-WTC 000096686
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000096686Source: NYC Law Department, mirrored locally
EPA Region 2 letter regarding revised environmental work plan submission for two buildings including asbestos, health, and safety assessment components.