NYC 9/11 Public Portal Document
SciLab Job #: 201092864 Page 2 of 2
Client Name: GCI Environmental Advisory, Inc.
Phase Contrast Microscopy (PCM) Fiber Results
N01-B4046; Rockrose Development Corp.; 22 River Terrace, NYC; CLEARANCE
Flow Air Fiber Fibers
SciLab Client Date Rate Duration Filtered Density Conc,
Fields Fibers TWA
Sample # Sample #1 Location Collected (liters/min.) (min.) (liters) (Fibers/mm 2 ) (Fibers/cc)
16 22-9/23-66 9/23/2001 15 60 900 100 3 3.82 <0003
Kitchen/CAS
17 P11 229/2367 9/23/2001 15 60 900 100 6 7.64 0.003
.-.-.- -.-.-. Kitchen/CAS
Reporting Notes:
0 I Fibers/cc c. nni t he cal( latcd (r samhi r blanks; with t no :r volume.
Analvzec t^. : T .,:. (; I; L ~~ 1 , Date An /s ad. ,24'2001
Samples analyzed I,v NIOSI I 741iui A ; Al edtod. ,ric 5/. / I N)44; irmit of Dectection= 5.5 'ihers per 100 fields or 7 fibers/mm2; This report relates ONLY to the sample aiiatsno expressed as fibers/sq mm of filter area; ND=no fibers observed: NA = not
analyzed; We] o.i-Bec},z t r rarl'cnk f , cld :,rca (t-(N17// mm'_: TWA =81trT'W A calculation assumes zero exposure for remainder of 8 hr period not sampled, Upper 95 ('onfidence Lintt (Employers Compliance Test) Calculated as a one sided UCLto
determine 95% certainty of compliance wide the 0.01 fbarce standard; Estirnated relative standard dc. iation: Intralab Sr=0.405, Interlab Sr=0.45, New fork saraplcs (NYS I )Ol l [LAP Lab # 11480); National Institute of Standards and Technology
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—Se AS
NYC-WTC 000120916
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