NYC-WTC_000232870

NYC 9/11 Public Portal Document

NYC Emergency Response Silica- Air Sampiing Results at Fixed Locations Sampling Date and Time: 1/G3/02 0730 to 1500

Sampiing Sampiint! Sample Quartz Cristobalite Tridymite Date Saiiiple No. Location Voiiime mg/m^ mg/m^ mg/ni^ Liters 1/3/2002 06023 A 1000 Air <0.01 <0.02 <0.02 1/3/2002 06024 3B 1000 Air <0.01 <0.02 <0.02 1/3/2002 06025 B 1000 Air <0.01 <0.02 <0.02 1/3/2002 06026 C woo Air <0.01 <0.02 <0.02 1/3/2002 06027 D 1000 Air <0.01 <0.02 <0.02 1/3/2002 06030 E 1000 Air <0.01 <0.02 <0.02 1/3/2002 06028 P 1000 Air <0.01 <0.02 <0.02 1/3/2002 06029 S woo Air <0.01 <0.02 <0.02 1/3/2002 06021 TAGA woo Air <0.01 <0.02 <0.02 1/3/2002 06022 TAGA woo Air <0.01 <0.02 <0.02 COG# 04897

Sampling Locations: NS: Not sampled A: NE corner of West Broadway & Barclay B: SE corner of Church & Dey St. C: Trinity (a.k.a. Church) & Liberty Cl: SW corner of Broadway & Liberty St. D: East end of Albany St. at Greenwich St. E: Western end of Liberty St. at South End Ave F: Northern median strip of Vesey & West St ERT 1/15/02 G: Church and Duane St. H: South side of Chase Manhattan Plaza at Pine St. I: SE corner of Wall St. & Broadway J: NE corner of Warren & West St. K: West St. & Albany in median strip L: On walkway toward North Park rec area (north side of Stuyvesant High), access to TAGA bus area M: Western end of Harrison St. at West St. (on tree next to bulkhead) N: South side of Pier 25 (next to volleyball court) P: NE corner of South End Ave. & Albany Q: Barclay & West St. (center island) in proximity to USCG command post R: TAGA Bus Location S: Rector & South End Location 3B Church & Vesey O H NIOSH 7500: Silica crystalline by XRD l"^

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NYC-WTC_000232870