Cleanup Criteria Pre-Cleaning Post-First Cleaning Post-Second Cleaning Post-Third Cleaning
COPC Air Wipe W Air Wipe MV Air Wipe MV Air Wipe MV Air Wipe MV
Dioxin 0.001 ng/m3 4 ng/m2
PAH 0.2 ug/m3 300 ug/m2 303.5
Asbestos 0.0009 f/cc n/a OL OL 0.0016
OL OL 0.0015
OL OL
OL
OL
Lead 1 ug/m3 25 ug/ft2 25 ug/ft2 336 104 SB
43.6 293
133
MMVF 0.01 f/cc n/a 13.399 16.598
o 19.25 12.621
H
Silica 4 ug/m3 n/a
to
l->
S OL = Overloading of particulates
O
MV = Microvac
o
o SB = Samplebroken
I
o
o
(JI
co
NYC-WTC_000195350
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000195350Source: NYC Law Department, mirrored locally