Document 6RV2aoOdOZOGvGw5agapv1Rrd

To; Le Herron cc: ^ John Kilsheimer Subject: Libby Vermiculice From; g. y. Chamberlain Date: June 12, 1978 I now have Dick Gruenbaum's report on air sampling of our plant working environment for asbestos. This covers February 23 and 24, March 3 andf 13, 1978. '. Overall, we are below the present OSHA standard which allows for 2.0 fibers/cc as the maximum eight (8) hour'time weighted, average. The . February 23 and 24, sampling was on South Carolina ore, March 3 was ` 100% Libby, and March 13 - 80% Libby, and 20% African. Results indica'te that the Libby vermiculite definitely has more fibers than the South ; Carolina ore. Less fibers seem to be present in the 80% Libby, and 20% African test versus that of the 100% Libby. 4 Grace indicated we should see improvement on air sampling of Libby " ore, due to process improvements they have made at the.mine since the first of year. Frankly, we have not seen any appreciable difference > comparing last year to these recent tests. Dickfs comment is as follows; "Results indicates a slight improvement over the average results of the last year, however, results are not as good as those indicate In * the; September 1977 sampling, I feel the equipment is showing more leaks now versus that of September 1977." " i Consequently, our results are inconclusive at this point in time, as It relates to Grace process improvements. ** 4 The question of labeling (placarding) cars from Libby to Marysville ' has again been reviewed. - Grace rational for putting labels on cars 13" legal. Reference "Federal Register #1910-1001, Page 513 Caution Label''". Caution label should be affixed to all raw material mixtures, scrap ? waste, and debris, etc., containing asbestos fibres, etc. The only way they feel they can ship cars without labels is to have a written ~ statement from Scotts, stating the material will be used in a total ' safe manner (written assurance the customer is meeting all requirement^ in safe handling). If we supply thiq written assurance, they will not have to placard the hopper cars. ' Dick Fresh did a literature search EPA, DOT, and 0SUA, and could find .. no reason why we could not respond co'Grace to remove placards from ' cars. Dick Gruenbaum reports we are under OSHA standard in work. ^ environment. Therefore, if there are no objections, I will write Grade that we do meat all requirements in safe handling, and to remove the . placards- SC DENH002357