NYC-WTC_000120626
(1) Fibers/cc cannot be calculated for samples (or blanks) with no air volume.
(2) Analyst was unable to
Analyzed by: Anthony Hinton
ation because of overloading of particulate material on the filter. ,
; Date Analyzed: 9/26/01
Samples analyzed by NIOSH 7400(A) Method, Issue #2, 8/15/94; Limit of Dectection= 5.5 fibers per 100 fields or 7 fibers/mm2; This report relates ONLY to the sample analysis expressed as fibers/sq mm of filter area; ND = no fibers observed; NA = not
analyzed, Walton-Beckett gradicule field area 0.00785 mm2, TWA =8 Hr TWA calculation assumes zero exposure for remainder of 8 hr period not sampled; Upper 95% Confidence limit (Employers Compliance Test)- Calculated as a one sided UCL to
determing 95% certainty of compliance with the 0.01 fber/ec stindird ) Sr=0.45, New York samples (NYSDOI! ELAP Lab # 11480); National Institute of Standards and Technology
NYC 9/11 Public Portal Document
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000120626Source: NYC Law Department, mirrored locally
57-page lab report documenting World Trade Center environmental test results distributed to multiple federal, state, and local agencies including CDC and EPA.