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NYC-WTC_000199771

Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000199771–000199775
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NYC 9/11 Public Portal Document

Je&sic,a Leighton - RA_sitrepO2-13.wpd Page 4

NYC / ER (Feb 6) - Particulate Monitoring (TEOM PMio)

o Wall Street - 24-hour average concentrations for this period was 31.66 ug/m\ o All readings below the National Ambient Air Quality Standard for PMio (150 ug/mQ.

NYC / ER (Feb 7) - Particulate Monitoring (TEOM PM 2.5)

o Park Row (Site 1) - 24-hr average concentration for this period was 20.79 ug/m\ o Chambers St./West St. (Site 2) - 24-hour average concentration for this period was 22.75 ug/m\ o Wall Street - 24-hour average concentrations for this period was 23.58 ug/m\ o Al) readings below the National Ambient Air Quality Standard for PM2.5 (65 ug/mQ.

NYC / ER (Feb 7) - Particulate Monitoring (TEOM PMm)

o Wall Street - 24-hour average concentrations for this period was 35.66 ug/m\ o All readings below the National Ambient Air Quality Standard for PMio (150 ug/mQ.

NYC / ER (Feb 8) - Particulate Monitoring (TEOM PM 2.5)

o Park Row (Site 1) - 24-hr average concentration for this period was 13.18 ug/in\ o Chambers St./West St. (Site 2) - 24-hour average concentration for this period was 14.03 ug/m\ o Wall Street - 24-hour average concentrations for this period was 14.60 ug/m\ o All readings below the National Ambient Air Quality Standard for PM2.5 (65 ug/mQ.

NYC / ER (Feb 8) - Particulate Monitoring (TEOM PMio)

o Wall Street - 24-hour average concentrations for this period was 32.46 ug/m\ o All readings below the National Ambient Air Quality Standard for PMio (150 ug/mQ.

NYC / ER (Feb 12) - Particulate Monitoring (Dataram)

o Particulate levels noted at three locations (Stations L, N, and R) were below the OSHA TWA. o Instruments operated approximately 8 hours. o Station L had an average of 27.91 ug/m’ with a maximum reading of 152.95 ug/mL o Station N had an average 13.38 ug/m^ with a maximum reading of 78.39 ug/m\ 0 Station R had an average 16.00 ug/m-* with a maximum reading of 71.03 ug/mk

NYC / ER (Feb 12) - Volatile Organics (Mobile Laboratory)

CITY_21MC100_000938707 NYC-WTC_000199774

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NYC-WTC_000199774Source: NYC Law Department, mirrored locally

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