8 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.978
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69 MURRAY STREET Block: 132 Lot: 3 BIN: 1001420
Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000097883–000097894Page image
OCR text
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
r I
J. C. Broderick & Associates j b•C Environmental Engineers
October 23, 2001
Mr. Howard Berman 69 Murray Street Housing Coop. 69 Murray Street New York, New York 10007
Re: Ambient Asbestos Air Quality Sampling Report Letter Method of Analysis at Utilizing Transmission Electron Microscopy (TEM) 69 Murray Street S"` Floor Apartment New York, New York 10007 October 20, 2001
JCB# 01-2273
Dear Mr. Berman: to perform ambient asbestos in air sampling and J.C. Broderick & Associates, Inc. (JCB) was retained performed on October 20, 2001 by a JCB New analysis at the above referenced site. The air sampling was were collected, chain of custody forms prepared, and York State certified air sampling technician. Samples the presence of asbestos fibers by Transmission delivered to an independent ELAP certified laboratory for Electron Microscopy (TEM). contaminates across the face of a polycarbonate or mixed The TEM analysis involves collecting airborne by the use of portable large volume vacuum cellulose ester filter. Again, air is drawn across prescreened filters using an acetone vapor technique and then plasma pumps. Prior to analyzing, the filter media is collapsed using electron diffraction patterns and, in some cases, etched. Then fiber structures are counted and analyzed fibers with a aspect ratio greater than 5:1 and a length energy dispersive X-rays. Under this methodology, all can positively identify these fibers as asbestos or non- of at least 0.5 micrometers are counted. TEM analysis asbestos. (US EPA), as indicated in 40 CFR Part 763 Section 90, The United States Environmental Protection Agency concentration of asbestos fibers as analyzed by considers remediation activities complete when the average from the attached laboratory report none of samples TEM method does not exceed 70 s/mm2. As you can see analyzed revealed concentrations of asbestos fibers. alysis report and a copy of JCB's asbestos handling Attached please find a copy of the chain of custody, lab an information is needed please call. license. If you have any questions or if more
Sincerely,
Kevin J. Kortlang J.C. BRODERICK & ASSOCIATES, INC.
attachments
631-419-0913 - 631-5B4-5492 - FAX: 631-5B4-3395 101-4 Colin Drive, Holbrook, NY 11741-Tel:
NYC-WTC 000097883
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NYC-WTC_000097883Source: NYC Law Department, mirrored locally
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