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NYC-WTC_000199739

Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000199739–000199741
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NYC 9/11 Public Portal Document

[ Jessica Leighton - RA sitrep12-11 .wpd Page 2)

Public School 154: 333 East 135- St, Bronx (Site 5) Intermediate School 143: 511 West 182— St., Manhattan (Site 6) Public School 274: 800 Bushwick Ave., Brooklyn (Site 7) Public School 44: 80 Maple Parkway, Staten Island (Site 8) Public School 199: 3290 - 48- Ave., Queens (Site 9) o During this period a total of 8 samples were collected from these monitoring sites. o All of the samples were below the TEM AHERA standard.

NYC / ER (Dec 9) - Particulate Monitoring (TEOM PM 2 5)

0 Park Row (Site 1) - 24-hr average concentration for this period was 7.59 ug/m^. o Chambers St./West St. (Site 2) - 24-hour average concentration for this period was 11.17 ug/m\ o Coast Guard Building - Battery Park (Site 3) - 24-hour average concentrations for this period was 8.23 ug/m^. o Wall Street - 24-hour average concentrations for this period was 11.13 ug/m\ o All readings below the National Ambient Air Quality Standard for PM2 5 (65 ug/m’).

NYC / ER (Dec 9) - Particulate Monitoring (TEOM PMio)

o WaUStoeet - 24-hour average concentrations for this period was 15.23 ug/m^. 0 All readings below the National Ambient Air Quality Standard for PMio (150 ug/m’).

NYC / ER (Dec 9) - Particulate Monitoring (Dataram)

o No particulate monitoring conducted due to rain at three locations (Stations L, N, R).

NYC / ER (Dec 9) - Volatile Organics (Mobile Laboratory)

o Benzene exceeded OSHA TWA PEL (1 ppm) at one location (North Tower) in the debris area in the plume at ground level. o 2 of the 3 other samples (Wash Tent, Austin Tobin Plaza) did not note any benzene above the detection limit (20 ppbv).

NYC / ER (Dec 10) - Volatile Organics (Mobile Laboratory)

o Benzene did not exceed OSHA TWA PEL (1 ppm) at any location, including in the debris area at ground level. 0 2 of the 3 other samples (Location R, Austin Tobin Plaza) did not note any benzene above the detection limit (20 ppbv). o Note: Washing Tent "background" monitoring location replaced by Location R (former location of TAGA).

CITY_21MC100_003051337

NYC-WTC_000199740

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NYC-WTC_000199740Source: NYC Law Department, mirrored locally

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