Circulation of draft environmental screening benchmarks for asbestos, fiberglass, and silica in indoor air and settled dust for expert review.
NYC-WTC_000159817–000159828Folder label: “E-MAILS SENT R. AVALTRONI”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Avaltroni, Robert From: Avaltroni, Robert Sent: Tuesday, April 02, 2002 3:29 AM To: Maldonado, Jane 001 Subject: FW: draft screening levels for asbestos, FG and silica in indoor air and settled dust
From: Gllsenan, Michael Sent: Monday, April 01, 2002 3:04 PM To: Radhakrishnan, Krish; Theodorellys, Penny Cc: Avaltroni, Robert; Chapin, Diana 001; Sturcken, Charles 001 Subject: FW: draft screening levels for asbestos, FG and silica in indoor air and settled dust
Krish- pls. comment on attached. I think we need to explain to Diana what this means to Asbestos in the greater scheme of things, assuming EPA makes these the standards.! don’t know if EPA could establish standards(benchmarks) for WTC only. —Original Message— ftpcMn:' PeVoney, Danielle [mailto:[email protected]] Sent: Monday, April 01, 2002 1:48 PM To: DeVoney, Danielle; ‘[email protected] ’; ‘[email protected]’; ‘[email protected]’; Rodenbeck, Sven; ‘[email protected]’; ‘[email protected]’; ‘[email protected]’; ‘[email protected]’; ‘[email protected]’; ‘[email protected] ’; ‘[email protected]’; ‘[email protected]’; ‘Randi J. Walker; ‘Patricia M. Fritz’ Cc: ‘[email protected]’; ‘[email protected]’; ‘[email protected] ’; Cooper, Barbara; Lee, Carolyn V. (Virginia); Neurath, Sue; Wilder, Lynn Subject: RE: draft screening levels for asbestos, FG and silica in indoor air and settled dust
Hi- I ran some quick calculations for risk combining air and dust numbers, and integrated them into a screening level table, this assumes protecting for a 1/10,^a® risk for one year for the upper tier. and the same for 30 years in the lower tier. This is a first attempt on risk number, different exposure assumptions, and K values would yield slightly different results. I’m providing this as a basis for discussion. If we like the approach we can refine the risk calculations appropriately. Also, I’ve used a K factor of 1 x 10 -7 for “daily activity” - although this works well with the math, we may want to refine that number also. thanks, danielie
•Original Message—
NYC-WTC_000159817
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NYC-WTC_000160806
Forwarded EPA draft guidance on screening levels for asbestos, fiberglass, and silica in indoor air and settled dust for departmental review.
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DEP discussion of drafting water use exemption notice for contractors performing necessary WTC hazard remediation and facade cleanup work.
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Transmission of WTC-related Q and A document to interagency task force with EPA Regional contact information.
5 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.968
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Report on asbestos air sampling at five locations borough-wide, showing levels below residential reoccupancy threshold except at Manhattan site requiring further fiber analysis.
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Request outlining DEP procurement and EPA supervision of cleaning and sampling contracts for Lower Manhattan residents.
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A document listing seven licensed contractors authorized to perform clean-up and abatement work at the World Trade Center site.
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Discussion regarding asbestos sampling results in an apartment and potential release of a draft document.
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Document requesting FEMA mission assignment for indoor air testing and cleaning programs in Lower Manhattan.
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Request detailing residential cleaning, asbestos air testing, and HEPA vacuum distribution programs for Lower Manhattan with cost estimates.
5 shared non-person entities · 1 shared topics · similarity 0.967
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NYC-WTC_000159808
Notice instructing staff to preserve original WTC documents as evidence for potential future legal actions against the City of New York.
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