NYC-WTC_000187461

NYC 9/11 Public Portal Document

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 27 samples were collected from these monitoring sites. o A sample was not collected from Site 8 on January 10 due to an equipment malfunction. o All of the samples were below the TEM AHERA standard.

NYC / ER (Jan 6) - Particulate Monitoring (TEOM PM 2 5) o Park Row (Site 1) - 24-hr average concentration for this period was 20.45 ug/m^. O Chambers St./West St. (Site 2) - 24-hour average concentration for this period was 21.26ug/n^. o Wall Street - 24-hour average concentrations for this period was 19.95 ug/m\ o All readings below the National Ambient Air Quality Standard for PMj 5 (65 ug/m’). NYC / ER (Jan 6) - Particulate Monitoring (TEOM PM,o)

o Wall Street - 24-hour average concentrations for this period was 29.50 ug/m^. o All readings below the National Ambient Air Quality Standard for PM,o (150 ug/m').

NYC / ER (Jan 7) - Particulate Monitoring (TEOM PM 2.5) o Park Row (Site 1) - 24-hr average concentration for this period was 9.23 ug/m\ o Chambers St./West St. (Site 2) - 24-hour average concentration for this period was 12.87 ug/tn^. o Wall Street - 24-hour average concentrations for this period was 12.49 ug/m\ o All readings below the National Ambient Air Quality Standard for PM2 5 (65 ug/m’).

NYC / ER (Jan 7) - Particulate Monitoring (TEOM PMk,)

o Wall Street - 24-hour average concentrations for this period was 17.11 ug/m^. o All readings below the National Ambient Air Quality Standard for PM,o (150 ug/mQ.

NYC / ER (Jan 8) - Particulate Monitoring (TEOM PNC ,) o Park Row (Site 1) - 24-hr average concentration for this period was 12.35 ug/m^. o Chambers St./West St. (Site 2) - 24-hour average concentration for this period was 11.60 ug/m\ o Wall Street - 24-hour average concentrations for this period was 13.32 ug/n^. o All readings below the National Ambient Air Quality Standard for PM2 5 (65 ug/m^).

NYC / ER (Jan 8) - Particulate Monitoring (TEOM PM,o)

o Wall Street - 24-hour average concentrations for this period was 23.36 ug/m\ o All readings below the National Ambient Air Quality Standard for PM,,, (150 ug/mQ.

NYC / ER (Jan 9) - Particulate Monitoring (TEOM PNC J o Park Row (Site 1) - 24-hr average concentration for this period was 17.38 ug/m^. o Chambers St./West St. (Site 2) - 24-hour average concentration for this period was 15.82 ug/nr\ o Wall Street - 24-hour average concentrations for this period was 16.05 ug/m\

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NYC-WTC_000187463