NY State air quality data tables, 1999-2001

NYC 9/11 Public Portal Document

CARBON MONOXIDE - Continuous Non-Dispersive Infrared NYSDEC Region 2 Metropolitan Air Quality Control Region Annual Averages 1989 through 1999 Traffic Sites Annual Arithmetic Mean (ppm) Station Site No. 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 350 Canal Street 8100-02N 2.9 2.8 2.8 3.1 2.6 2.3 2.1 1.9 1.7 1.6 1.5 Brooklyn Transit 8100-03 3.0 2.6 2.4 2.1 2.2 2.2 1.9 1.9 1.7 1.6 1.5 225 E. 34* Street 8100-06 (2.3) 2.3 2.1 1.9 1.9 1.7 1.6 1.3 1.3 1.3 Blootningdales 8100-07 (2^ 2.4 2.7 2.5 (2.4) (2.2) 1.7 Comparison Between NYS Ambient Air Quality and Ambient Air Quality Standards for Calendar Year 1999 One-Hour Average Running 8-Hour Average (Non-Overlapping) Maximum not to exceed 35 PPM more than once per Maximum not to exceed 9 PPM more than once per calendar year * calendar year * Observations Highest Values, PPM Observations Highest Values, PPM Total[ % >35 >9 Days Station Site No. PPM 2nd 3rd 2 nd Obs. Avail 1“ Total PPM 1“ 3"“ 9PP M 350 Canal Street 8100-02N 8,530 97 0 9.3 7.1 6.2 8,582 0 5.0 4.1 3.9 0 [08/12, [08/12, [10/29, [10/30, [08/12, [11/23, 21] 20] 24] 03] 23] 19] Brooklyn Transit 8100-03 8,434 96 0 7.8 7.3 6.6 8,518 0 5.4 5.0 4.7 0 [10/29, [09/27, [01/21, [10/30, [05/22, [01/21, 23] 14] 08] 05] 05] 14] 225 E. 34* Street 8100-06 8,455 97 0 5.8 5.4 5.4 8,527 0 4.9 4.8 3.7 0 [10/29, [01/25, [05/22, [10/30, [05/22, [11/23, 23] 15] 01] 03] 06] 18] Blootningdales 8100-07 8,376 96 0 6.8 6.2 5.9 8,434 0 5.5 4.7 4.4 0 [10/29, [10/29, [10/30, [10/30, [02/16, [01/21, 2T| 221 02] 041 14] 12]

(Annual Means in parentheses are based on less than 75% available data) N=NAMS (National Air Monitoring Station) [Date of Occurrence, Hour] •New York and Federal Ambient Air QuaUty Standard + Denotes a contravention of NYS/Federal AAQS (Note: 9PPM standard is not exceeded unless 8-hour avg > 9.4 PPM)

NYC-WTC_000186098