NYC Law Department release
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Document / 33 pages

Unreadable DEP document excerpt, undated

Machine-extracted title · confidence 95%

Page containing garbled text and binary data from a Department of Environmental Protection document.

NYC-WTC_000152717–000152749
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NYC 9/11 Public Portal Document

a. We agree. OSHA permissible standard for worker exposure is 0.1 fibers /cc. DEP does not use this standard. DEP uses the re-occupancy standard of 0.01 fibers/cc b. EPA established the definition for asbestos containing material (ACM) as any material that contains greater than 1% asbestos, which is regulated. This is not the time create a new standard and standards are created based on history of diseases caused as a result of exposures. c. Any disturbance(including clean-ups) of asbestos containing material (greater than 1% asbestos) triggers NYC asbestos regulations. 13. Phase Contrast Microscopy (PCM) measures all the fibers and it doesn’t differentiate between asbestos and other fibers. TEM identifies the type of fibers. TEM is more sensitive. The turn around time for TEM is higher than PCM and TEM is more expensive(??). 18. Testing & retesting 2(9 Streets and side walks were cleaned before the streets were opened??? Plan for roof & outside cleaning.

NYC-WTC_000152719

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NYC-WTC_000152719Source: NYC Law Department, mirrored locally

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