Air quality analysis report, 22 River Terrace, Sep 2001

NYC 9/11 Public Portal Document

SciLab Job #: 201092731 Page 1 of ' 2 Client Name: GC! Environmental Advisory, Inc. Phase Contrast Microscopy PCM) Fiber Results NOl -B4086; Rockrose Development Corp.; 22 River Terrace, NYC / CLEARANCE Flow Air Fiber Fibers SciLab Client Date Rate Duration Filtered Density Cone. Fields Fibers TWA Sample # Sample # / Location Collected ( liters/min,) 2 {min.) (liters) (Fibers/mm ) (Fibers/cc)

01 X121101 9/21/01 0 0 0 100 0.5 0.64 Field Blank PI I Footnotes: I 02 121-02 9;21101 0 0 0 100 0.5 0.64 Field Blank Footnotes: 1 03 x/21-03 9121/01 15 60 900 100 17 21.66 0.009 Apt. LAS 04 9121-04 9/21/01 15 60 900 100 19.5 24.84 0.011 Apt born /CAS TEM LEV 2 05 P/21-05 9/21/01 15 60 900 100 14 17.83 0.008 Aptl PAS 06 b/21-06 9/21/01 15 60 900 100 12 15.29 0.007 Apt; AS 07 12i-07 9/21/01 15 60 900 100 54 68.79 0,029 Apt; born /CAS TEM LEV 2 08 b/21-08 9/21/01 15 60 900 100 16 20.38 0.009 Apt! 3om /CAS 09 9121-09 9/21/01 15 60 900 100 4.5 5.73 < 0.003 Apt; AS 10 9121-10 9121101 (5 60 900 100 10 12.74 0.005 Apt] kim /CAS 11 X121-11 9/21/01 15 60 900 100 21.5 27.39 0.012 Apti AS TEM LEV 2 12 K7/21-12 9/21/01 15 60 900 100 18 22.93 0.010 Apt! /AS TEM LEV 2 13 ;9121-13 9/21/01 15 60 900 140 3 3.82 <0.003 Apt! ACAS 14 !9/21-14 9/21/01 15 60 900 100 4 5.10 <0.003 Apt! 'CAS 15 9/21-15 9/21/01 15 60 900 100 3 3.82 < 0.003 Apt; corn /CAS

NYC-WTC 000120886