NY State air quality data tables, 1999-2001

NYC 9/11 Public Portal Document

NYSDEC Region 2 CARBON MONOXIDE - Continuous Non-Dispersive Infrared MetropohtanConno^Region Annual Aver^s^l989 though 1999

Station Site No. 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 PS 59 7093-10 1.7 1.6 1.4 1.4 1.2 1.3 1.3 1.1 1.0 1.0 1.0 Botanical Gardens 7094-06 0.7 0.6 0.6 0.7 0.7 PS 321 7095-06 1.0 1.0 0.9 0.9 0.8 0.9 0.8 0.8 0.8 0.8 0.8 Queensboro Comm Coll 7096-08 0.7 0.7 Comparison Between N YS 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. Avail PPM 2nd 2nd 3rd 9PPM Obs. I" 3"’ Total PPM 1“

PS 59 7093-10 8,530 97 0 8.4 5.0 4.8 8,506 0 3.7 3.6 2.9 0 [02/27, [02/27, [02/27, [02/27, [10/30, [02/16, 24] 20] 23] 24] 03] 14] Botanical Gardens 7094-06 - 8,581 98 0 6.2 5.7 5.7 8,600 0 4.6 4.0 3.2 [10/29, [02/16, [12/08, [10/30, [12/08, [12/10, 23] 10] 21] 03] 23] 09] PS 321 7095-06 8,567 98 0 4.5 3.9 3.9 8,601 0 3.6 3.3 2.8 0 [01/21, [05/21, [05/21, [12/13, [05/22, [01/21, 09] 24] 23] 16] 05] 11] Queensboro 7096-08 8,091 92 0 3.5 3.5 3.4 8,008 0 2.8 2.6 2.5 0 Comm. College [05/09, [12/03, [05/30, [12/09, [05/09, [01/21, 041 09] 01] 02] 08] 10]

(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 Quality Standard + Denotes a contravention of NYS/Federal AAQS (Note: 9PPM standard is not exceeded unless 8-hour avg > 9.4 PPM)

NYC-WTC_000186099