NYC 9/11 Public Portal Document
INHALABLE PARTICULATES - Wedding or Dichotomous Sampler
NYSDEC Region 2
Metropohtan Air Quality Control Region
Annual Averages 1989 through 1999
Manhattan Sites Annual Arithmetic Mean (ug/m’)
11 3 Yr
Station Site No, 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 Exp Vai
Mabel Dean 7093-05N 29 28 35 (35) (27) 28 24 25 26 24 21 24
PS 59 7093-10 40 (39) (36) (38) (30) 31 33 41 31 30 XX XX
Midtown 7093-12 66 (58) (51) 44 47 51 51 45 46 56 (47) 50
37”' Street 7093-13 (42) (41) XX XX
Canal Street 7093-14 (44) (51) 47 XX XX
Sampling at 7093-12 was suspended on 9/27/99 and terminated at 7093-10, 7093-13, and 7093-14 on 12/31/1998.
Comparison Between N YS Ambient Air Quality and Ambient Air Quality Standards for Calendar Year 1999
# of Days >150 ug/nr -
24-Hour Concentrations - ug/m’ Not to exceed an expected avg of one per year
during the last 3 years *
I Maximum 2"'’ Max. 3"' Max. 1997 I 1998 1999
Total Exp
Station Site No. Obs. Value Date Value Date Value Date Mea Est Mea Est Mea Est Avg
Mabel Dean (W) 7093-05N 48 46 09/09 45 07/05 44 08/28 0 0.0 0 0.0 0 0.0 0.0
Midtown (D) 7093-12 43 102 08/04 79 08/28 77 09/09 0 0.0 0 0.0 0 0.0 0.0
(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
NYC-WTC_000186092
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