Document zojE71wbYVbERpz9qBGg8QoDn

3383< GRACE CoHrttwcrtow PmducU Otviiiwi TO; M. Staler S. Ahem FRCM: S. Venuti OC: R. J. Bettaodii R. C. Ericson H. A. Eschenbach J. S. Hamilton P. J. Walsh R. C. Walsh J. W. Wolter/H. T. Dudley DAZE: August 8, 1985 SUBJECT: Program Report #3 a Gcnpariscn of SA (Standard Product) vs. SCA with Libby 12 Cyclone Fines added. The attached report indicates fiber exposures above the O.lf/oc action limit, and instantaneous total dust exposures (considered to be representative of dust levels throughout the shift) above the OSHA permissahle exposure limits (15mg/n3). A prior report for a different SCA job site indicated fiber exposures well below the action limit. The total dust exposures ware also below the OSHA-PEL but above the AC&H-TLV (10mg/in3). We are actively pursuing additional SCA job sites to test. The additional data will enable use to determine what typical exposures are. As discussed with Mark, the following questions need to be addressed: 1) What legal obligation do we have to our customers when total dust overexposures are found? 2) Does the asbestos standard Title 29 1910.1001 and the O.lf/cc action limit as stated in OSHA enforcement guideline (Instruction CPL 2-2.21A) apply to these situations? If so, what legal obligation do we have to our customers when fiber exposures above O.lf/oc are found? SV:td Attachment