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NY State air quality data tables, 1999-2001

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Annual New York State Air Quality Monitoring Data Tables covering the period from 1999 to 2001.

NYC-WTC_000186075–000186110
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NYC 9/11 Public Portal Document

OZONE - Continuous UV Light Absorption NYSDEC Region 2 Metropolitan Air Quality Control Region

Annual Averages 1989 through 1999 Manhattan and Brooklyn Sites Annual Arithmetic Mean (ppm) Station Site No. 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 Mabel Dean H.S. 7093-05 .019 .020 .013 Greenpoint 7095-01 ................ - (.010) .021 .022 (.024) XXX XXX XXX Sampling at 7095-01 was terminated on 10/25/96.

Comparison Between N YS Ambient Air Quality and Ambient Air Quality Standards for Calendar Year 1999

One Hour Averages 4”’ Highest Daily Maximum 8-Hour Average - Not to exceed an avg of 0.08 ppm during the last 3 Observations Highest Values, PPM years * Total % >.12 Station Site No. Obs. 2nd 4'1’ Avail PPM 1“ 3"’ 1997 1998 1999 Avg Mabel Dean H.S. 7093-05 7,662 88 0 .122 .120 .116 .099 .082 .075 .075 .077 (Oper. 03/10- 12/31) [07/17, [07/18, [07/16, [07/19, [08/10] [08/04] [06/26] 15] 14] 18] 14]

(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 Federal AAQS (Note: .08 PPM standard is not exceeded unless avg. Of 4*’ max S-hr concentrations > .084 PPM)

NYC-WTC_000186101

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NYC-WTC_000186101Source: NYC Law Department, mirrored locally

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