Parameter Clearance Level Note
Asbestos in air 0.0009 f/cc PCMe Primary clearance level
Lead in settled dust <25 pg/tf Primary clearance level
Dioxin in settled dust <4ng/m^ Primary clearance level
Fibrous glass in air <0.01 f/cc Secondary clearance level
Crystalline silica in air 0.5|ig/m^ Secondary clearance level
PAHs in settled dust <0.15 mg/m"^ Secondary clearance level
2. Cleaning shall not be considered complete unless the primary clearance levels are achieved. The
apartment will be re-cleaned and retested if the primary clearance levels are not achieved. These
clearance levels may be re-evaluated and revised if determined necessary based on field conditions
and analytical limitations. Secondary clearance levels shall be considered in determining the need
for additional cleanup, however failure to meet the secondary clearance levels does not automatically
trigger the re-cleaning. In the event re-cleaning is required, re-sampling shall be performed
immediately upon completion of the cleaning.
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NYC-WTC_000162846
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NYC-WTC_000162846Source: NYC Law Department, mirrored locally
Request for review of monitoring contractor specifications for air sampling, including sampling methodologies, limits of detection, and clearance criteria, with reference to prior…
13 shared non-person entities · Same agency, volume and box · similarity 0.994
Request for review of monitoring contractor specifications for air sampling, including sampling methodologies, limits of detection, and clearance criteria, with reference to prior…
Request for review of monitoring contractor specifications for air sampling, including sampling methodologies, limits of detection, and clearance criteria, with reference to prior…