NY State air quality data tables, 1999-2001

NYC 9/11 Public Portal Document

NYSDEC Region 2 Metropolitan Air Quality Control Region Annual Averages 1989 through 1999 Annual Arithmetic Mean (ppm) - Primary Standard Bronx Sites (12 month average not to exceed 0.03 PPM *) Station Site No. 1989 1990 1991 1992 1993 1994 1995 1996 1997 1988 1999 IS 155 7094-03 .017 .016 .016 .014 .013 .014 .010 .009 .008 .009 .010 Morrisania 7094-05 .014 .018 .019 .018 .018 .014 .014 .012 .011 .011 IS 52 7094-07 - "■—— 1 — —— 1^— ........ —I |_| — ................................... , .014 Sampling at 7094-03 was terminated on 7/19/99 and commenced at 7094-07 on 10/05/99 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 Total % >0.5 >.14 Station Site No. Obs. Avail Total PPM P' 2nd 3rd 2nd Total PPM 1- 3"*

IS 155 7094-03 4,565 95 4,465 0 .071 .060 .057 193 0 .038 .035 .033 [02/16, [01/06, [03/04, [02/16] [02/09] [01/06] 09] 13] 10] Morrisania 7094-05 8,133 93 8,008 0 .124 .079 .072 342 0 .052 .041 .037 [02/16, [12/03, [02/16, [02/16] [12/03] [01/12] 11] 07] 08] IS 52 7094-07 2,062 99 2,037 0 .082 .081 .062 87 0 .044 .036 .031 [12/03, [12/09, [10/08, [12/03] [12/09] [12/13] 07] 09] 09] SULFUR DIOXIDE - Continuous Pulsed Fluorescence NYSDEC Region 2

(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 -h Denotes a contravention of NYS/Federal AAQS

NYC-WTC_000186090