< Indicates less than the limit of quantification
70 structuresfmm' = AHERA re-occupancy
criteria for school children
NQCS « No quality control sample taken
(1) Analyst was unable to quantify fiber
concentration because of overloading of
particulate matter on the fitter.
(2) Moderate to heavy paiticclate matter is
present on the filter which may obscure some
fibers causing results with a low bias.
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NYC-WTC_000174320
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NYC-WTC_000174320Source: 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.
57-page lab report documenting World Trade Center environmental test results distributed to multiple federal, state, and local agencies including CDC and EPA.