Document g26g76jooE51v6bZYwB50gz93

PLAINTIFF'S EXHIBIT KM-136 ^ KELLY MOORE PAINTS. INCORPORATED San Carlos, California ASBESTOS SURVEY This plane vas visited on Noveaber 11, 1976 to re-evaluate Che effective ness of exhaust ventilation Installed on the "taping compound1' bagging achlne within the PACO Textures Department. Mr. Doug Merrill, General Manager, was contacted following this survey with regard to our pre liminary conclusions. CONCLUSIONS The operator of the bagging machine for the "taping compound" is not considered exposed to excessive air it concentrations of asbestos with regard to the current health standard. The exhaust ventilation that has been Installed around this machine is effectlvelv controlling this worker's exposure to asbestos dust. The operator of the ''taping compound" bag dumping station is not considered exposed to excessive air concentrations of asbestos with regard to the current health standard. . '{ Edward Drake Industrial Hvgienist 1. The re-survev of the bagging and dumping operation for the "taping compound" shows workers are not exposed to air concentrations of asbestos in excess of the current health standard. However, as a pre-caution, the Medical Surveillance Program presently in effect for employees working with asbestos should he continued. EDika 12/15/76 .. .. KatnHrrvvnnee//tf. Kellv, P.Y. // Senior tfealeh Consultant -n 32: DISCUSSION There have been a number of asbestos surveys made vtthln the PACO Textures Department since 1972. Initially, verv hi eh concentrations of asbestos were found within the plant. Consequently, there has been a successful attempt at reducing the workers' exposure to asbestos to within the current health standard through elimination of asbestos In the product. Installation of exhaust ventilation, variations In work procedures, use of vacuum systems for cleanin'* up, etc. The bagging station for the "taping compound" was one of the last job areas where there still remains an excessive exposure to asbestos fibers. The installation of additional exhaust ventilation on this bagging machine has eonseauentlv reduced this worker's exposure to asbestos fibers to within the current health standard. Survey Method - Air samples were collected on membrane filter papers (0.8 micron porosltv). Air was pulled through there via personal sampling sumps at approximately 2 liters per minute. Air samples were collected both in the operator's breathing tone and in the general room areas directly around specific machinery. All samples were analyzed at our Hopklnton, Massachusetts laboratory using the phase contrast microscope method. Toxlcltv - Asbestos has a current'health standard of 2 fibers per milli liter of air. This Is an eight hour time weighted value. Excessive exposure to this dust may cause a lung disease known as ashestosls and/or cancer of the chest known as mesothelioma. Health Standard - There has been a steady reduction in the health standard for asbestos and the current standard of 2 fibers per milliliter of air became effective Julv 1, 1976. Health standards are guidelines to pro tact most workers and should not be accepted as absolute values with which all workers will be protected. Pre-existing medical conditions or an individual's susceptibility may be exceptions to this. For these reasons it .is the best policy to keep air concentrations of asbestos as low as possible. "Taping Compound" - Bagging Machine - Air samples were collected around the workers during actual bagging operations. The. results of thesa air samples Indicate what his maximum exposure to asbestos would he during the bagging operation. It should be noted that much of this worker's time may he taken up In coffee breaka, lunch, preparation time before and after bagging operations, etc. It was felt that approximately six hours per dav ara spent during the bagging operation and approximately two hours per day are spent in work situations where there would he little or no asbestos expo sure. The approximate eight hour time weighted exposure to asbestos fibers for the "taping compound" bagger operator was felt to be less than one fiber per milliliter of air. 4*7 3DC -2- ,,! f*a* < tt O v*! 5 2i *=! H -h! o (N b r! 5 -=uc XSO,i;; Juifs ! i soua u so uae. u 4euo* ua 1 ii I (A MM i o Aa RESULTS OP: A abaatoa In a i r M b o o& iw 2 3 47 597 .n g 47 338