Document M43D09BoRpQJzvzjLaxNGb2by

(p(/' 0 o9 F INTERNAL CORRESPONDENCE PLAINTIFF'S EXHIBIT UNION CARBIDE CORPORATION TECHNICAL CENTER P.O. BOX 0361. SOUTH CHARLESTON. WV 25303 E. Rucker Division 512/2009 l_OC.Bt.ior> Area copy to H> Avashia> M.O. - 512/23 J. W. Barna - 2009/6 W. L. Browning - 2009 -- R. E. Coyner - 2009 C. P. Maxwell - 701/2 B. R. McMakin - 2009 Datx? June 12, 1987 EM&TSOriginating Oept. - HS&EA Industrial Hygiene Asbestos Exposure Monitoring / \ Attached are the results of asbestos exposure monitoring for three days on insulators at the Institute Plant while removing asbestos on a 3-inch steam line and a 4-inch product line at the #1 dock area in an enclosure. The area enclosed was 5.5 x 6.5 x 200 feet or 7150 ft^. HEPA exhaust was 120,000 ft^ per hour which is equivalent to 16 air changes per hour. The area enclosed was along the roadway and the dike wall between the #1 and #2 docks. The area was barricaded while enclosure was in place. Seven out of eight personal exposure samples exceeded the 0.2 fiber/cc permissible exposure level standard and the eighth exceeded the 0.1 fiber/cc action level standard. We encourage you to use supplied air respirators as much as possible in the asbestos abatement procedures. Please communicate to your employees the need for the utmost care and precaution while removing asbestos. Employees wore two pair of coveralls, headcovers, boots, gloves and AO R57-A half-face HEPA cartridge respirators. No street clothes were worn. They showered before lunch and at the end of the workday before leaving plant. UCC 011334 ASBESTOS EXPOSURE MONITORING -2- June 12, 1987 Please inform ' _ of their exposure monitoring results as soon as possible. Have them sign and date this report and return to M. A. Patel at Building 701-330. If you have any questions or if we can be of further assistance, please call us on extension 4779 or 3750. WORK BY: APPROVED BY: VES:HJK:MAP:rab 2384P Manhar Ai Patel UCC 011335 Date 5-6-87 5-6-87 5-7-87 5-7-87 5-7-87 5-7-87 5-8-87 5-8-87 Sample Type/ Employee Name e ; f ASBESTOS EXPOSURE MONITORING Comp. Ref. W2216 W2217 W2218 Sample Time 7hr lmin 7hr Omin 7hr 4min 6hr 58m1n 6hr 58min 7hr lmin 6hr 46min 6hr 43min Air Cone. Fibers/cc 0.495 0.547 0.402 0.496 0.231 0.280 0.157 0.503 twa8 Fibers/cc 0.433 0.478 0.355 0.432 0.201 0.246 0.132 0.422 COMMENTS Stripped, bagged and vacuumed appx. 200 feet of 3 and 4-inch lines in enclosure at #1 Dock area. Stripped, bagged and vacuumed appx. 200 feet of 3 and 4-inch lines in enclosure at #1 Dock ar*ea. Stripped, bagged and vacuumed appx. 120 feet of 3 and 4-inch lines in enclosure at ;<#1 Dock area. Stripped, bagged and vacuumed appx. *120 feet of 3 and 4-inch lines in enclosure at #1 Dock area. Stripped, bagged and vacuumed appx. 120 feet of 3 and 4-inch lines in enclosure at #1 Dock area. 'i Stripped, bagged and vacuumed appx. 120 feet of 3 and 4-inch lines in enclosure at #1 Dock area. Stripped, bagged and vacuumed approx. 80 feet of 3 and 4-inch lines in enclosure then cleaned lines at #1 Dock area. Stripped, bagged and vacuumed approx. 80 feet of 3 and 4-inch lines in enclosure then cleaned lines at #1 Dock area. UCC 011336 ASBESTOS EXPOSURE MONITORING (Continued) Comp. Ref. W2216 W2217 W2218 Date 5-8-87 5-8-87 Sample Type/ Employee Name AREA AREA Sample Time Air Cone. Fibers/cc twa8 Fibers/cc COMMENTS 6 hr 32min 0.003 0.003 Inlet to HEPA Filtering system for enclosure at #1 Dock area< 6 hr 43min 0.009 0.007 Outlet to HEPA Filtering exhaust for enclosure at #1 ;Oock area. * I *. 2389P UCC 011337 I