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plain i ..: exhibit INTERNAL CORRESPONDENCE 1H FILE UNION CARBIDE CORPORATION technical center P.O. BOX B36 1 SOUTH CHARLESTON. WV 253l]'.l V. Filipek 514-5516 Cooy 1C ^ j_| Avashia - 512/23 w! l! Browning - 2009 C. N. Cunningham - 2009 K. 0. Hopkins - 5516 C. P. Maxwell - 701/2 B. R. McMakin - 2009 July 23, 1937 EM&TS - HS&EA Industrial Hygiene ' Asbestos Exposure Monitoring Attached are the results of asbestos monitoring for one day at the South Charleston Plant while removing asbestos from a line in pipe rack north of Building 250. Approximately 44 feet of line was stripped from a 4-inch product line. A mini-enclosure was used on a valve and 8 feet of line at ground level. Amended water was used throughout the abatement project. Both personal exposure samples were below 0.2 fiber/cc permissible exposure level standard per OSHA asbestos standard 29CFR 1926.58. One personal sample was above the action level of 0.1 fiber/cc. Exposure monitoring may not be required in some instances where supplied air respirators in positive pressure mode are being used for asbestos abatement projects. We encourage use of supplied air respirators whenever possible. The area sample just outside the barricaded area showed less than a measurable amount of asbestos. Employees wore no street clothes, two pair of coveralls, headcovers, boots, gloves and AO R57-A HEPA half-face cartridge respirators. They showered before lunch and at the end of the workday before leaving plant. Please inform S. M. Barker and J. R. Chandler of their exposure monitoring results as soon as possible. Have them sign and date this report and return it to M. A. Patel at Building 701-330. UCC 024575 Asbestos Exposure Monitoring -2- July 23, 1987 If you have any questions or we can be of further assistance call us on extension 4779 or 3750. WORK BY: APPROVFD 8Y: VES:HJK:MAP:rab 2523P Manhar A. Patel UCC 024576 Corrp. Ref. W2240 Sanple Type/ Date Employee Name 5-19-86 Personal/ S. M. Barker 5-19-86 Personal/ J. R. Chandler 5-19-86 AREA ASBESTOS EXPOSURE MONITORING Sanpling Air Cone, Tine fibers/cc fibers/cc CCWENTS 6hrs lQnin 0.174 0.134 Stripped, bagged and vaaiured approx. 44 feet of line north of Bldg. 250. 6hrs Smin 0.061 0.047 Stripped, bagged and vacuuned approx. 44 feet of line north of Bldg. 250. 6hrs 7min <.007 <.005 At northeast comer of barricade (downwind) at breathing zone level. 2523P UCC 024577