Document gEkykXZEaGG82wK3OBa2Kg1aG

FILE NAME: Reynolds Metals (RM) DATE: 1972 Mar 16 DOC#: RM042 DOCUMENT DESCRIPTION: Internal Memo RE Airborne Asbestos Fibers Subject Report on Monitoring Airborne Asbestos Fibers for Job 8633 copies to D i c k A b b e y Bechtel Corporation Inter-office Memorandum Date March 16> 1972 From j, Neerhout, Jr 01 Field Construction At Ingleslde, Texas Job 8633 Attached is a copy of the report Reynolds Metals Company made on m on itoring the amount of airborne asbestos fibers generated during the spraying of Limpet insulation for the #9 Kiln ESP. The subcontractor doing the Insulation, AC & S, was employed by Bechtel under Contract 8633-M-70-HA. Please file with the First Aid Dead File previously transmitted. JN/JB/nb Enclosure | EXHIBIT 9--Z. (2H0A) c e c a (3-flJ Batchelo 00004111 rfK.ACOtfPANY CORRESP^ ENCE R-98 (R .v. 1.68) PROM: ___ T O : COPY: * P- Farther Mr. R,, H. Fea^herston D A T E ft SUBJECT: __February 25. 1972______ AIRBONE ASBESTOS FIBERS Daring the tine when construction workers are insulating the No, 9 kiln ESP there is a considerable quantity of visible agglomerates of asbestos floating downwind of the area. Intermingled with the large agglomerates are finite particles which are not visible but which are trapped on a membrane filter. The fibers are generated when the aabei tos or limpet is blown onto the equipment being insulated. Sampling was done on two separate days and the fibers 5mm or longer were counted using a phase contrast microscope with results as follows * Date Location 2/21/72 Ground level 200 ft. N of headhouse 2/21/72 Headhouse, ESP floor, NE corner 2/23/72(0805) Headhouse, ESP floor,. NE corner 2/23/72(1015) Same location 2/23/72(1315) Same location Wind DiScr&ectSiBon 3 S S S Fibers/mi 0.178 0.296 `2*0 2,L 1.9 The measurements fall''blw'the 5 particls/ml limit established by OSHA. The large agglomerates are not caught in the filter. [ Batchelo 000041V