Document k9jJxYyodd1ogVm2koOYgx4OB

PLAINTIFFS $ exhibit I8 -WV-062X1) lnlr Offlcs *rch 7, 3S73 Mr. J. A* Zellsr* Supervisor Xferaonnel Services Section Qeneral Servloss * cc It. N. Qvrlae M. A. Burls* M.P. - Subject: Asbestos In Air SsapHng - V . - Ai^ ' Pmonntl And Otgnuitioo Staff foe Sepertaeat of labor* under the eutharl^r the Occupational Safety mj& Health Act of 1370, la Section 1920.93a:Of the Ifederal MgUttr Anted October IB, 2372 boa prcwalgated ocoipstional health standards la relation to the am of asbestos nod asbestos laden enterlale. Xh response to them standards* survey of Research ad ThglnaaTlnff operations relevant to the am of asbestos use conducted. Teo operations la the Ifcsearoh and Biglneerlng Obnter located In the Scientific Building and foperlaantal Oarage vara reported to eaploy eObaatoa in ooojonctlcn with the brake operations. Results of air candles taken at these . locatio.njis are attached. .jw foe operation located la the Scientific Building Involves the canpowd- lag .of. euperlnmtal brake dices end pads and tbs operation located la the fityerlaental Oarage Involves grinding end dressing of xeplaceeent brake shoes and pads, focal exhaust ventilation la used ms control at both locations. In addition to local eadmst* m approved dust respirator la sorn in the asbestos operations at tbs Scientific Building. r\ .>!>.. _` Specifically, Section 1910.93% of OSSA October Id, 1972 federal Register states that the foreshold Unit Telus ^TLT) for asbestos la 5 fibers great*?`than 3 alcrcna In length per mill litter of air. On July l, 3576 the TLT shall be reduced to 2 fibers greater than 3 adcrons In length per eilHUter of air. These in 8-hour tine velgbted average exposure Halts. -Th* celling Unit for exposure'la eet at ID fibers greater then 5 alcrone per allllllter of air. ; -- a/ , --- Bbenthe TLT and celling Unit are exceeded* engineering aaS/or adeinlst**- tlw. controls aad/or respiratory protection la required and also csntlcn eigne. auat be posted at the statlona^ E^edal clothing mat be provided ` dm the reselling Halt la axceedod. lh addition* the es^loye sust be * notified of his over exposure to asbestos elthin five days of the finding. .. Mute nsterlal utrtcfc ecutains asbestos oust be disposed In Ispezaeafcl* contalnera vitb caution labels (OSSA 1910.93a subparagraph $ - "Ctatlcn Stpiaand labels" pp 22lky-22lhk) If stbaaigemt huddling of the vests oould-result In excessive dimt concentrations. fMBjflaJ tyJUJU P IP P IN S 0 FORD er<- 1 1 -0 0 3 7 - SCF-FORD-1003 A. Mr. J. A. Keller **rch 7, 1973 Ztoge 2 A review of the attached data indicates no air MQlta exceeded the 5 fiber CUT* One air aenple approached the .10 fiber oelUas Holt* fhia aaaple zepzveenta one of the four operation* perfOraed in the oaDgxnndlag and destructive testing of brake arterial and therefore should. ba can- ldexed a peak Mnple with the 10 fiber Qrillag Ltzdt applicable. Although the elerated oerzple le within 0604 llsdti/ft la aazgtnally eo and actloa le eusepHited to reduce the duet level. Ude should consist of l^provlnc local exhaaat ventilation for ering) ,rtll^, and destructive testing. Disposal of aafeestoa laden waste material a* reoonaendnd by the 088A standards la zecasaended. 1 *' Bj bzake reaearch operation will be air eaapled again la )*qr 1973 the Bonltorlnd provision of COTA 1910.93* eUbparsgzssh f Bauy B* Utcfc Ihduirtrial Byglanift industrial Mrgtene flection ;. 'l J as ' -y*l Attachment , ..tv'-J! t r > >/ . .... .-.'*4 . v . - . -i .if'..? PIPPINS V FORD B3-11-00 / 37- S MJf xyit SfiSS^* V y ......i. . . J u -.i- Chaoantimtlce of Jlben Greater flan 5 Mlerona laagWmillUtpr of AS C6DU A*be*to* fiber BixeaholA Halt Telia (XLf)&-&our T\m IMIjlitiafl OSSA TUT aa of JfOj 1, 1576 OQHA Celling Halt a. Oaapoaodlng bnka nbtilAli ! Halt* 88 f6&Bl - Mar1! hreattilia. noe r aaqOe (BZ). b. General root dr aaayle, roaprwwftlng lab. > "a,. -- c. Brake friction, testing ftaurtiaa, *. HI*!*, 88 K * fllli and n band: easing of botnd tad cozed brake lining (peak aa^le) . i \ (eatlaeted le*a:tban qqe hour par day exposure). ^ h -j d* Band mar roomt general room air aaafiia. 2. Experimental Oarage Grinding and dreaming of brake ataoaa cd Botwda Brake operator V. Kett, SS fP3T> o.oc o.ai Inetrunentattoo: MBA Model 0 Portable Time at 8 Utter* par Minute and MHlipore 9^pa AA Analyal*: >301 Cbutraet Mlciaaoopy by * - .u* .. filter*. P IP P IN S V FORD 83-11-00 37-