Air quality analysis report, 22 River Terrace, Sep 2001

NYC 9/11 Public Portal Document

SciLab Job #: 201092830 Page 2 of 2 Client Name: GCI Environmental Advisory, Inc. Phase Contrast Microscopy (PCM) Fiber Results NO1-B-4086; Rockrose Development Corp.; 22 River Terrace, New York, NY/ Finals Flow Air Fiber Fibers SciLab Client Date Rate Duration Filtered Density Conc. Fields Fibers 2 TWA Sample P # Sample P # / Location Collected (liters/min.) {min.} (liters) (Fibersimm ) (Fibers/cc)

16 ------------ 22- 9/22/01- 38 9/22/01 15 60 900 100 6 7.64 0.003 /Room: Kitchen / CAS 17 22-9/22/01-39 9/22/01 15 60 900 100 4 5.10 <0.003 Room: Kitchen / CAS 18 22-9/22/01-40 9/22/01 15 60 900 100 4 5.10 < 0.003 P II ;Room: Kitchen / CAS 19 22- 9/22/01- 41 9/22/01 15 60 900 100 5 6.37 <0.003 l Room: Kitchen I CAS 20 22-9/22/01-42 9/22/01 15 60 900 100 5 6.37 <0.003 Room: Kitchen / CAS Reporting Notes: Analyzed ho Victo, Slop ac >7` Y ;Date An,,!ve d. `"23/fit

S wales : ratyzed by NIOSI! 7400(A) Method, Issue 112, S .2 04; Limit of Deco,t ,u,= S5 fi tters per 100 fluids or? fibersimm2; "this ca rt relates ONLY to the sample aratrsis expressed as fibersisq mmof filter area; ND = no fibers observed; NA = not n. , rd tip':/tcn-l:eckett gradiruk-'; 1 1 : rea 1) ')(''S mr, FWA =8 Hr Ty'A "a4,il:,t,on assumes ceroexposure for remainder of 6 hr period not s:urtpted; l.pper 95;n Confidence Limit (Employers Compliance Test)- Calculated as a one sided UCLto ermine 95':: certainty of compliance with the 0.01 fi ber's standard; Estimated relative standard deviation: Intratah Sr=(1.405, lnterlah Sr=0.45, New York samples (NYSDOII CLAP Lab # 114R0); National institute of Standards and Technology

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