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v. E. CC: K. 0. D. 0* L* H file * PLAINTIFF'S '*s'SK EXHIBITl ^ ;^IWR(G-`494ff^ WRG 06016517 6an FrnucHco March 3 R L: C i i v E D 000271 cr ja sc " -- -*< 5".3- a e"> o- ~ o oe r? P3> 39O 3r+- MArt 1 0 1X9 H. G. DONOVAN ASG FIBRE OIVN. r RE: California Zonollte of Los Angeles My vie It of February A, 19C}. 6av John Huxley, Production Manager Hal Haight, Plant Manager Ray Rothfelder, Tech. Director John advised that they will he bidding shortly for the new ruin Tower Building of Atlantlc>Rlchfleld Corp. to he rut up In too Angeles. This Job, if they get It, will take approx. 200,000 bags of jtonollte's monocoat and thus they are quite excited about the proepeeto and as a matter of fact so am I. They have had no problens vith our fiber and everything la working nicely. (Rote: BusIncon is down a bit here though becauoe of tha heavy rains ve have had out here however, they should really start rolling once ve gat sene sunshine.) Ray Rothfelder wonted me to thank Lloyd for the information he eeat him in hie December 11, 1968 letter and also the "Clnss Graduated Cylinder" which arrived In one piece. Be had a few questlono which I answered however he said he really hasn't gotten into the matter of the microscopic behavior of Asbestoe with Oypeun. He concluded by saying tlwt when he doos he will write Bill Strelb at ;fcorarch. (rote: Ray also told me that Mel Quayle was back with them doing ooae consulting work and that he (Mel) woe going back Diet In a few weeks to run a fire test.) The other things Ray and Z discussed vns that he wonted to look at some of our cheaper grades from our Coallnga mine. (Rote: I advised Jim Goodwin to send to Ray 50 pounds each of Blue Brand, floats and Orern Drnnd) tfe also dlscuoaed 60 Mat. and the work that vill be going on with it In tbe Twin Tower Building back In 21.Y., Ray waa sort of surprised though at the 60 Met price aal said he would odvloc me later if he wanted a sample to the teat out in hie lab. Lastly Ray told me that the Dept, of Public Health tins been really after them concerning their use of asbestoe fiber. (Note: lie had a copy of a report from the Dept, of Public Health and said he would eend me a copy.) This report la attached to thle letter. ,? ` J.Pi McCarthy 4 { 1 j a o o . T At f pf (*llfOMA-IUAlTX AN* AOINWT DEPARTMENT OF PUBLIC HEALTH wDuroau oC Occupational Health 144.9 Tempi* St., Suit* 106 Lo* Angolos, CallComl* 90026 e Novembor 22, 1968 RCCUVtO LA. ** NOV 22 1963 060/1G518 California Zcnollt* Company 738 Colorado Boulovard Los Angeles, California 90061 Daar Slrat Enaloaad la a copy of th* roport of our Industrial hyglon* atudy ' of oxpoauraa to aabaatoa duae at tho Beverly Hllla High School conatrucclcn alt*, Thla atudy wee mod* at the. roqueet of th* California Dlvlalon of .''.'-l, Induatrlal Safety. .r ::. Th* operation atudlad Involved the application of a cementitious fir* retardant aatorlel, Monocot*'"', to structural "I" booms by moons of ; pneumatic plastor gun assembly. .Atmospheric concentrations of asbeotoscontaining dust vor* found to b* low on a count basis. Hmovor, on a wolr.ht basis, oxpoauraa vara found to exceed our suggostod Threshold Limit Value for asbestos duet. Therefore, because of th* added carclnogcnlo properties of asboatoa, V V"'V racosaandatlons for additional personal protection aro offered In thla ..'v. . report. y- ` .. . V* wish to thank Messrs, Kay Rothfolder and Doyle D. High for their . ' <, cooperation during th* oonduot of thla atudy. ., l . **>> s.- . Vary truly youra, Thomas H. Mllby, M.D., Chief Buroau of Occupational Health . v . : V : V' .*r;-/ -* A' '' KFB/ld . . '**< P^ Hoctor P. Dlojor, M.D., D,I.H. Medical Offlcor ... . . . - i. : i * * 1 ' i :w - .. 1: - I . .jsaeJMW ,.ii in i >!.. * A>.o v,|,i>rt Ar.iNCr DlPARYMENT OF PUSLIC HEALTH 1449 Tnnplo Strooc, 6106 Loa Angelea, California 90026 "C\. 0016S1S . ' ** ' .1 - ' Report of an Industrial liyglono Study ac >: ' ' v * . ' .. ii '. Beverly Hills High School . * 241 South Korono Orlva , . .. Savarly Hills, Californio Study Mo. t S-2050 Roport datai November 22, 196ft *. Study raquaatad byi California Dopartmcnt of Industrial Ralatlona , Division of Industrial SaCoty Study ecnduooed by'' California Department of rubllc Health .Bureau of Occupational Health U Environmental Epidemiology . ` ' Mr. Paul E. Caplon, Industrial Hygiene Engineer '' '`4' I "t Los Angolas County Haalth Department ,'"-i .. Division of Occupational Itoalth .* '*%. *IJ| .| it Mr. Mark Bant, Industrial Hygienist W.. and V *1 'p"' Ji. California Department of Industrial Relations !; v.'* r* ; \J< lvV< .. Division of Industrial Safety ? Mr. Jerome Eicon. Industrial Hygiene Engineer u4 * o' In company with i * ' CalifomlaZonolito Company Mr. Ray Rothfeldcr and , ^ l*\* V.-^q . Mr. Doyle D. High , California Division of Industrial Safety % 1 Mr. John A, Elliott. Safety Engineer ' \V and Orange County Plastering Association ... Mr. Ed Radamachor > .<. 11 ri i 7 Summary On September I?, 1968, an Industrial hygiene study oC cxpo.-.ur- W9AtSP dust was conducted at the building construction site oC the hevcrly Hills High School. Tho operations studied involved the application of a ccincntltious fire roslstant matorlal, HonococoW, to structural beams hy means oC a piaster G"n assembly. Rolatlvo to tho pulmonary fibrosis hazard, atmospheric concentrations of ashestos' containing .^ust voro found to be low. Hovovor, bocause of tho adclod carclnogonlc propcrtior'of ssbostos, recommendations for additional poraonal protocclan aro offered In this report. Ccnornl Ooorntlons At this now hich school building construction site, a CIre-proof Inc macorlal, ` . * Honocote'"', manufactured by the California Zonollto Company, was oppllod to !. structural "I" basins, as a wet slurry, by means of a pneumatic spray cun. During t" this tppliOAtlon, tho sprsy gun Oparstor rccolvod an inhalation oxposuro to tho cloud of dust and spray which bouncad off the eurfaco bolng coated. Tho soray contained * mixture of watar, vormicullto, gypsum, and asbostos. Tho MonocotoOO mixture woe - fdrmuletod outs ldo tho building, by dumpInc sevoral bags of tho dry mix Into the hopper of a mixer, adding wstor and then mixing. In turn, tho roeultant elurry vee. - pumpad under pressure through hose to the point of application, Sampling Procedures " , Work atmospheric exposuras to the Monocoto' mlxtura woro evaluated by : ' colloctlng Air samples slmultsnaously by 2 different oothods: with all-gloss midget .. lmplngars end with hlch volume filter papor samplers. Tho implngor sanplos were analysed for dust concentration by count, using tho Standard llght-dold technique, recommended by the American Conforenco of Governmental Kyglcnlste(l) (ACC111). Highvolumo samples woro analyzed bv welitht. by gravimetric techniques. All snmpleo were 1 tekan at the oporator'e breathing tone during 2 differonc normal work procedures* Indoor spray application and outdoor batch mixing. ; Matorlal samples of dry Monocote^ mlxtura end wot a lurry wore collected directly from a bog and from -the discharge of tho pnoumatlc spray gun, respectively, . ' These ware enalysod for eebostoe content by the X-ray diffraction technique in the... . Air and Industrial Hygiene Laboratory of the State Dopartmont of Publlo Health* ' i '* , Analytical Results * * * Chamlcsl analyses results of material sanploe are ahown In Table I, jtudjf Mdi 4*iOJ8 1 TArnT. t Composition of Material Samples 06016521 t Ho. Location and Tvdo of .lamolo Asliu.'.tOS co;U.< nt - 7. Pn.n*lr: .'I' *1: 1 ! " -i : i , t< 2 .ft ! . . Dry mix, directly from bag of Tlonocote" Hot slurry, directly from pncumscle eprey gun 11 less Chen 1 Close to "statod" conposltlon of California Zonollto Corp. Apparently, tha prosonco of tho osbostos Is "masked" by tho gypsum or veraicullto. j Results of the atmospheric samples, taken sc eh* as In construction sits and . . st ths hoppsr loader, srs shown in Tab Is II. .* . . r Toxicology and Hygienic Standards r . Lone, continued oxcosslvs inhalation and lunc deposition of asbestos can { . result In a aevere fora of pnouaoconiosis known as pulmonary asbostosle.2*2** i. ' In it, cha aost aarkod damage la an lrroversiblo scarring or fibrosis of the lung r. tissue} asbestos bodies being found thero and also In tho sputum. Advanced pulmonary asbestosls is a crippling and fatal dlsoaso. Belotlvo to this dust's pnoumoceniotio effects, the ACCIH has set a TLV* for asbostos of flva million partielas per eubia foot of air (mppcf). Rocontly, in addition to typical pulmonary' asbestosls. It vas established that bronchial carcinoma, pleural and perltonoal i. ' ,> . ., aosothellOMi (cancers of tha lung and of tho lining of tho lungs and abdominal cavity, respectively) are also aaaoolated with oxposuros to certain kinds of asbestos dust, Even more recently, malignancies of othor organs--ovaries and lntes> . tlnal traet>>have tentatively been almllarly United. In tho 1966 "Transactions of tha ACGXH"!, attention is ealled to the very real probability that the TLV of 9 mppcf la inadequate to give eoaplete working lifetime protection against all forrn , of asboseos*produced disease. Thus, the ACCIH now recoBoends a lower tlme*veighced [ ; *Throshold Limit Value (TLV)t As doflnod by tho American Confcronco of Governmental Industrial Hygienists, tho TLV refers to tho tln-.y weighted average oirbomo eonccn- . tret ion of a substanco, and represenes conditions under which It is bollovod that nearly all workera may be repeatedly exposod, day aftor dny, without adverse effect. It should bo used ss s guide in the control of hoalth hnsarda, and should not be regarded as a fine line between aafe and dangerous concentratlcns, scuay h. s-2030 0601652C TLV on o count basis of 2 mppcf, with a "Ceiling" U.V of 5 rappcf--Uio loiter not to bo exceeded even for short periods of lino. (Nuie: iho cxocu do;o-and-cffact relationship rolaeivo to the cancerous effects of asbestos has not been detersinod yet. Currently, occupational hycicnists, toxicologists and physicians continue their research to determine that relationship.) For sllica--nnother substance causing severe j>noiinoconlosls,^l>ut_w_lth no known carcinogenic cffcccs--the ACCIH has set TI.Vs count!'rnd > a voight? basis. For asbestos, hovovor, no limit on o yoight basis'has bcgn^ipcclf icaily suggested. /Totj^such a velght-basis tiycicnlc.Limit for asbestos is nccossary duo to the olffrtulty TrT Identifying_lts"fibers during microscopic counting. Asbostos fibers havo unique physical and toxicological properties:'' they can subdivide almost ad Infinitum, and, onco inhaled, pcnctrata to tho innermost pulmonary tissues . and lining surfacos. As voll, asbostos is fibrogcnlc and carcinogenic. A consor- , vatlvo vlov would bo to consldar asbostos at least as toxic as silica dust. Slnco yalr.ht-basi*-TLV f or_pure silica _dust has boon cot at 0.3 ml 111 cram .pe r_cubic moter of air (mg/M^), an appr~o?fib'ta weight-,basis TLV for..asbcitos..shouId--at 1 oa~~c--aleo bo 0.3 mg/M3. This also takoa .into account the factor that any dust in which 'asbostos is'identifiable should be considered aa pure asbestos. (More then 3%),. - Discussion and%Reeontr~ndatlons ** Tho results of sir sampling In the main spray application area and the hopper loading area should be compared with tho above mentioned TLVs. It will bo observed that (1) by count, tho average dust concentrations at both locations did not oxcaod tho TLV of 2.0 mppcf, and that by weight. all of tho dust concentrations exceeded the TLV of 0.3 rng/MJ. It appears, therefero, that exposures ara suffi ciently high to warrant control of the Inhalation of large asbostos dust particles,* For tho most effective control of this dust, respirators should he pro vided and worn: thoss respirators should bo approvad by tho U.S. Bureau of Mines for protection against pneumoconiosis-producing dusts. As mentioned, tho exact dosage relationship between inhalation-exposure to asbostos and ell forms of asbestos-produced dlseasois not known prcclsoly, particularly so with respect to' lung and othor cancers. Tho conservative approach, therefore, would bo to reduce ell inhalation exposures to a practical minimum. For thlo reason, wo strongly rocoasr.ond that any exposure to asbestos dust, both in hopper loading and in opray application, bo minimized by tho uso of rosplrators, approved by tho U.S. Bureau of Mines for protoetlon against pneumooonioale producing dusts, , ; ' \ ; ;V ' ''' ' * |^ ' f '* * * - ** . j. . Report propared by , ;'i. . . . . ' ' /. ' * . .> , PEC/Id Paul E. Caplan Sr, Industrial Hygiene Engineer . j.2058 / itEFCRS.vrr.s 06016523 ' . . 1,. Transact Ions of tho Natloi.^l CcnCcrenco of ; '< Governmental Industrial Kyglonlsts, 1942. 'J9 - -. \ '* . 2. Documentation of Threshold Limit Valuos, /. * >>.*.' .8 . r. Rev. Edition. Coco ittoo on Threshold Limit Values, American Conference of Governmental Industrial Hyglonlsts, 1961. * .. I e * . 3. Hygienic Guide Scries - Asbestos, . . ' American Industrial Hygiene Association, (. . `J m - .v.'V 4, Threshdld Unit Values for 1960, Adopted at tho 30th Annual Mooting of tho * . . American Conference of Governmental ' Industrial Hygienists. May 13, 1968. ; ** ,V * * . i * , ./ `ir; ' 3. Transactions of tho 30th Annual Moating of tho American Conference of Governmental -Industrial Hygienists,page 188. , May u-u. 1968...- ^._v-;. v;. v-:; .. ?:;y: .> \ -V . >;/y; ... * v" .*- ;**'-'*. y\.; ?t*-. s'!. `` -.r'.* > V'..;.V. **\*, .,* ; , `-V'.'/'.' ' -I'.:.1 >* '! *; . -` J.n'.l*.- ':, V*. >'- r.-. . : i:*.' . .Vy..' . -r>(-..-I pv- ^'vv5?-... -* ** *.* V v. , ^ * J '1 *. V. v : ' !' r* 4*: . ' * vi . *) . J , . s^e : :'.:;-vvr>.*;/ ..-va-.v V. - V- ' *?v' . , . ,v- : . .. "w'V. :;V V..*'.* *'* ^ * * * . :8 y *' ' * V* .. % : *\ * ' ! '*; V *' ; '*. ' f- 1 'i- w. I 1 I / TAPLE- IT 06016521 Atmospheric Concentration of Monocoio (R) Dust Location, V l.a, In*ldo bldg. on scaffold. . .1 son J- b, Insldo bldg.' , . on scaffold* 1 aaa. Av,. exposure * ?oak exposure s. '2.' Outside bldg.- by nlxor . ' hopper* " '1 saa Av. exposure Peak exposure Oporatlon Applying Honocote by . spray gun Applying Honocote by spray gun loading hopper'vlth 4 batches' of'. Honocote ' ` ;.4>: * / * ^ Allow;;. appef'' ; f nc/MAit22))J Remarks 1.0 / 3.2 t . ' '* ODZ^ normal operation* nor.rl* at aedlua speed " 0.75 4 0.70 . 0.8 ; i.o .; 0.7 4 1.4 ' ** . /' 3.1 4 . 3.8 fee J/\`-5 ' V ,1 i.4 4 : -.9.9, * .a >* V. \1 * * .J* - OUZ, normal operation* nossls at aedlua speed 03Z, norma* l '-. ', * oporatlon 'j* low wind condition 7 ,, 1.2 1.4 ' 3.7 i. 9.9 * * 1 .* Hyglenlo Standards for /`\>v Asbestos Oust (count baala) . .i' . Threshold Llalt Valuo(av.)^ Throshold Llalt Value (peak)^ si i ... ; Sf.-r.oatod TLV^vo-lehe-b-wrlTT" (^footer than 3X aabsstos) '2.0 3.0 1 \ 1 *' *-* / *i % . .... ; (1) appef . Billion partlelea per mblo Coot of air v;- .(2) ag/M* -allllgraa per eublo aotor " t' . ' " - (3) OBZ Operator'a breathing sene ' 'i ..*.. . * - : ; * t. , '* *f