Technical memorandum from EPA discussing ultrasonication testing for asbestos in carpets and HEPA vacuuming effectiveness.
NYC-WTC_000140040–000140079Folder label: “EPA Cate Jenkins”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Table A - ESTIMATING AIR LEVELS FROM ASBESTOS DUST LEVELS Uses asbestos risk assessment methodology of EPA Region 1 to calculate air levels from dust using the K-factors found by MiOette, J. R., and Hays, S. M. (1994) Chapter 8. Resuspension of Settled Dust. In; S&ttled Dust Sampling and Analysis, Lewis Publishers, CRC Press.
DUST LEVEL x K-factor = AIR LEVEL . where the K-factor increases wtth Increasing human activities that stir up dusts (resuspension)
MEASURED K-factor = 10* K-factor =10* K-factor =10" K-factor = 10* DUST LEVEL activities where K-factor activities where K-factor no activities studied activities where K-factor measured included measured included gym- resulting in this K- measured included structures per vacuum cleaning carpet, athletic activities, broom factor warehouse with a fork lift square cleaning storage area sweeping, installing centimeter cable above ceiling tiles (s/cm^) multiply dust level by multiply dust level by multiply dust level by multiply dust level by 0.000001 to get 0.00001 to get 0.0001 to get 0.001 to get AIR LEVEL (s/mL) AIR LEVEL (S/mL) AIR LEVEL (s/mL) AIR LEVEL (s/mL) 100 0.0001 0.001 0.01 0.1 500 0.0005 0.005 0.05 575 1,000 0.001 0.01 0.1 1 2,000 0.002 0.02 0.2 2 3,000 57003 0.03 0.3 3 4,000 0.004 0.04 0.4 4 57000 0.005 0.05 0.5 5 6,000 0.006 5706 0.6 6 7,000 0.007 5757 577 7 87000 0.008 0.08 575 8 9,000 57559 5759 579 5 10,000 0.01 57l 1 10 20,000 5752 572 2 55 30,000 0.03 0.3 3 35 40,000 575? 57? ? 45 50,000 0.05 0.5 5 55 60,000 0.06 575 5 55 70,000 5757 577 75 8O,O00 5755 575 5 50 90,000 5755 575 g 50 100 000 571 1 15 T55 2OO,OO0 575 2 25 255 300,000 0.3 3 35 355 400,000 57? ? ?5 ?55 500,000 0.5 5 55 555 600,000 0.6 5 55 555 700^000 577 7 75 755 800,000 57S 5 55 555 900,000 STS 5 55 555 1,OOO,O00 T5 155 T555 2 255 2,OOO,O00 25 2555 3 000 000 3 35 355 3555 4.000,000 ? ?5 ?55 ?o05 5,OOO,OO0 5 55 555 5550 6,000,000 g 55 555 5555 7,OOO,o00 7 75 755 7555 8,000,000 8 55 555 5555 9,000,000 5 55 555 5055 10,000,000 TO 155 1555 10000 50,000,000 50 555 5555 55555 100,000,000 T55 1555 15555 100000
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NYC-WTC_000140064
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Forwarded EPA memorandum dated June 9, 2002, concerning the Asbestos Reservoir and carpet testing methods.
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EPA memorandum addressing World Trade Center asbestos contamination status and agency efforts to provide information on the situation.
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EPA memorandum on wipe sampling methods for asbestos in Lower Manhattan buildings, resuspension projections, and cancer risk estimates from WTC dust exposure.
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Memorandum detailing procedures for asbestos wipe sampling in Lower Manhattan and estimating associated cancer risks from dust exposure.
16 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.986
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Technical memorandum from EPA discussing ultrasonication testing for asbestos in carpets and HEPA vacuuming effectiveness.
10 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.978
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Memorandum comparing asbestos data in Manhattan to other sites and arguing for cleanup under the Superfund statute.
13 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.977
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EPA memorandum detailing plans for asbestos wipe sampling, projecting airborne dust levels, and estimating increased cancer risks from WTC dust exposure.
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Internal tracking document for managing reports, comments, and actions related to environmental compliance cases.
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Correspondence criticizing the EPA and DEP regarding asbestos, silica levels, and safety clearance after cleaning at 114 Liberty Street.
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