NY State air quality data tables, 1999-2001

NYC 9/11 Public Portal Document

Metropolitan Air Quality Control Region Annual Averages 1989 through 1999 Annual Anthmetic Mean (ppm) - Primary Standard Brooklyn and Staten Island Sites (12 month average not to exceed 0.03 PPM *) I Station Site No. 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 Greenpoint 7095-0 IN .018 .016 .013 .012 .010 .011 .010 (.009) .008 .007 .007

PS 321 7095-06 .013 .013 .013 .009 .008 .011 .008 .009 .008 .008 .009

Susan Wagner 7097-01.012 .009 .010 (.009) (.009) .008 .005 .006 .006 .006 .006 Sampling at 7095-01 was terminated on 16/22/99 Comparison Between NYS Ambient Air Quality and Ambient Air Quality Standards for Calendar Year 1999 Running 3-Hour Averages 24 Hour Average (Calendar Day) Maximum not to exceed 0.5 PPM more than once Maximum not to exceed 0.14 PPM more than once per calendar year * per calendar year * One-Hour Averages Highest Values, PPM Highest Values, PPM Observations Non-Overlapping Observations Midnight - Midnight

Station Site No. Total Obs. % Avail Total >0.5 PPM 3"* Total >14 PPM 1“ 2 nil y" 1 Greenpoint 7095-0 IN 6,778 96 6,659 0 .072 .054 .052 286 0 .033 .028 .026 [02/16, [02/16, [02/09, [02/16] [02/01] [02/09] 12] 09] 03]

PS 321 7095-06 8,461 97 8,333 0 .055 .055 .050 358 0 .036 .030 .029 [01/21, [12/03, [02/16, [12/03] [01/27] [02/16] 09] 03] 12] Susan Wagner 7097-01 8,504 97 8,370 0 .041 .041 .040 360 0 .024 .022 .021 [01/21, [12/09, [04/29, [12/03] [12/09] [12/13] 09] 09] 091

(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

NYC-WTC_000186091