Document NGYrEKgnkagMyooQ6bop2NxQw

liana LJaffl i MSI 117 I Ol O z PLAINTIFF'S EXHIBIT DUP-1049 SAFETY ENGINEERING STAND MEASUREMENT AND CONTROL OF ASBESTOS OUST EXPOSURE **- - *' * . 5 feU . .f.-tu L A s r eve- APRIL 1973 OCT 1979 ~ OCT 1979 This standard include# requirements of the Occupational Safety and Health Act of 1970 (OSHA) aa published in th Federal Register OSHA Information la printed in red. 1. SCOPE 1.1 rhis standard presents the permissible asbestos dust exposure limits, methods of controlling a4w*to* dust ex posures, special OSHA requirements for removal of asbestos insulation. respiratory protective equipment, and method of sampling asbestos dust concentrations in the work area. It provides sufficient information to comply with OSHA and KPA regulations hut guidance from the Du Pont Legal Dept should be sought whenever an in* torprettve problem arise*. 1.2 An Asbestos Compliance Package ran In* obtained from The Occupational Environmental Control group of ESD. ReF(l) contains extensive-additional information. 2. GENERAL 2.1 Asbestosis and cancer are associated with exposure to asbestos. Historically, the incidence of these diseases Has been significantly higher among asbestos workers than among the grneral population. Cigarette smoking greatly increases the inriilence of respiratory cancers from ex* posure to asbestos. Asbestos-exposed persons who smoke have s 90-fold increase in risk from lung cancer over non* smokers Ref (2). 2.4 material* t ontaming bound shImMii* fiber* are nut hazardous during nonnai use. Example* are: bonded i (impressed asbestos gaskets, asbestos roofing felt. Teflon' impregnated asbestos packing and fibrated asphalt cut back (mastic). These materials could become hazardous if asbestos fibers are released because of loss of hintler or s physical action such aa grinding. 2.5 A material which contains asbestos *hieh might la^'orne airborne should be treated as asbestos unless it is determined that the asbestos present is not a potential health hazard. Talc, vermicuiite, and other minerals are listed by Appendix I of Ref (1) as possibly containing asbestos. 3. REREHSMLI EXPOSURE LHUNTS 3.1 filter. i imi rnir.itiHti* m .or not -t i-.-d .hi Hdtour lime.weighted average ilWA) of 2 fiber* bui'i'T lh.ui " miTomct* r- per ro 1 ,ur Vt no rime may the concentration exceed a retting of Id fiber* longer lhan * mn nmii lrrs per i m l. 3.1.1 The l-hour time-weighted average (TWA) is the average concentration occurring over a period of 8 continuous hours. 2.2 Principal potential sources of explore to airborne asbestos dust in Company operations are: . Removing old asbestos-containing insulation from lines and vessel* b. Removal, handling, and laundering of aslx'stoa* contaminated clothing 3.1.2 By far the majority of al**tiM used for in* *ulation is the chrysotile form. Other forms of asbestos that have lower proposed exposure limits (ACOIH TLVs) are rarely used. For more complete information on these other limits refer to S2T Table 4. The OSHA permissible rxpmure limit listed in 1.1 is the *mne for .ill forms of asbestos. C Cutting asbestos cement (Transite) siding, roofing, pipe, etc, or Haveg pipe ami equipment d. Maintenance ami operation of machinery and vehicle brake lining 4 Opening boxes and removal of new asbestos materials f. Handling asbestos materials used in production of Company products g. Repair of laboratory equipment with asbestos insulated heatera (e.g., gas chromatographs, lab ovens) K Cleaning and maintenance of vacuum system* for culiedion of asbestos fibers 2.3 Suitable nonasbestoa substitutes should be sought for a#bettos<ontaininf materials whenever their use can result in a release of asbestos fibers. 4. CONTROL OF ASBESTOS OUSTS 4.1 Engineering Control* t.h i*-m,ilii>n. `'M* 1.,-ur*-. %l. <i-t .',* 11, -ll.ill lie OM-tl t*i n 1 i! p< r> t:-*.!*1 m U. 4.1.1 I.<h ,il < xb.ni'l v< tilli.ilimi .it*! .ii. I !c `ii.ii 'halt be in ,urd.me *oh \ N ** 1 #'i i i`CI. "I Hudamcntj(s Lmimmg the h* i^h nd 1';f .'uvi <*l I < il Exhaust ^x*tetiiv** 4.1.2 Additional information on the deign of ven tilation systems is contained in DH1U, H3U, DL20D and Ref (1) and (6). 4.2 HandHuf Atbaetoa 4.2.1 Insofar a prji lii ul. C'b >i>- -Ii.ilI i.* bundied. iii \< d, applied, remov'd, tut. **> i I. *r dhi rwi-* 1 vi` C *gw,s'5e* ` ** *9*0 *00* 93-0 Vsndor* and marchandiss dssignatisnt ars jivsn ro dsseribs materials and may not melud* oil acceptable products. Substitutions by suppliers are to be reeds only on approval el the local authority initiating the use of this standard. SUBCOMMITTEE NO. 4Q DUP I 130044 DU 056470 $4 T p#ga a MCAMRMHNT AMO CONTROL OF AMCtroC OUST EXROtUM Thfa Mr Ratr Oct 1t7> w-rkad In a wat stata .uflici.-ui t,, m ih. mi.u I uirlmirie fiber. ill csei-sa nl ihr .i|i....ir.- liiintc n. .. i non J. 4.2.2 HUS#K##plflg* All external *urt**ce shall h** nif Um< ! In*#* t dhe*to fib*' it. thir r.o'U. ' *. -( Ht.iilil .in '`Xi ''Mivr *nifitr.ii ii*u. a. AU irh when abeam ii routinely handled hell have vmcuian cleanup system. This can be a system of hoat connected to a central vacuus system designed in accordance with 4.1.1. b. No dry sweeping ahall be perforated. Cora, preaaod air hoae ia not to be uaed for cleanup. 4.2.3 Caution rians am' labi-N -hull he mumI per -..(ton ll. 4.2.4 N.i .-hot..- ii-n.i'i . ii. ! ,r. * ' --- !' - .i ` .i -..I ul.iiiiin,. . iiiiA. ! ;-i'i:i bat--. i ...I.' . .. ' I.. " * :I r < .!u r. ;-i h..'. ii. - un 'o['p.*i| v..:li.fin I.. ,n ; nli. . ... .Y< - I ..r o'..iuicil so a- to prevent i :fectivel\ thr r. i < I i. :i|icr. in rut--- i.: i . !. i i:- 44 Toot* Used on Aitooteo 4.3.1 Avoid sawing where poaeibie; knife cutting ia preferred. 4.3.2 Ml hund-.'per.itei m.f ;...... ~ rut* d t ... I - 'ii>h iiiu. (icmIuiv .r r.'leu-. -1.. -1.. - I'd.. n .'\n -- .-l r j.enit!--d.le e\|M.-iire limit. ie. - ..re-, .ibr.i-hi Ii.'.'Ih. und drill.I .hall lie firm tied \*ith u dii-te'idlerlmn -i-tein a. .|*ectlied lit V.l. 444 AU aabeattwcutting operatiom ahould be isolated to miniaaia unauthoriaed aeceaa. This can be a temporary ares for nonroutine operations with barricade, and signs par action 12. Routine work ahould be isolated in a properly ported separate work tree. removal and reinriallation far equipment maintenance or other recsom. providing the techniques employed have been demonstrated to maintain abestoe concentrations within exposure limits of action 3. b. The clothing requirement does not apply to removal for maintenance or alterations when the wot nwMWt ia uaed and monitoring of Idafltfcai work ha dtown the precautions maintain asbestos concentrations within the ceiling limit of section 3. 444 The work area .hail be barricaded and caution ngna dtail be poeled a described in section 12 at approaches to area where abestoe materials ire being handled. This reqtdremeat does not apply under con ditions described in 4.44.1 s and b. 14 4'" , I ' t I .t I "-I ............................... . .|ic'in-ulf ...' . .......... - Vetting may have to be suspended on outside operations when temperature* get below OX. If sabetto* cannot be wetted due to freezing temperattsee, it dtould to the extent poaeibie be removed a unit sections. 4.44 Support fastener* shall be removed with care. Handle asbestos-containing materials in such a manner to miniatia generation of airborne abe*tea fibers. Do not drop. 4.4.6 Ki l mvril a-ht-Un. 'iiul'-nul. -hull I. ! .. t] I.mcl ll. '. ,1* it I ti. ...Ilk ,r , 'ill. -ill.'t t.c -... mi .il.ltf'iv I III l..l|-. 44.7 Maintain good housekeeping. Vacuum equip, ment meeting requirement* of 4.1.1 ahall be used to prevent loose accumulations of fragments. S. RfWfftATONY KOUMMNT 44 Ramaaal at ANnaataa ktatdattosi 44.1 If the composition of the material ia unknown, it dtail be treated a being asbestos. For uae of labels to identify nonabeato* insulation, see SN218P. t.J "mper rcpirator- jmtti.m `ii .m.'. lit. .1 .thmjj iper recti, i ^l -hull he |.rm .1- t .< , ".i . .`iii'uited in removal nr i|-ni<.|iti..n ... '..tv i .r ...wrin*. Atmosphere supplying reapiratora (5.4) are required except where it ha clearly been demonstrated tha the wet method ia effective and monitoring ha shown that levels on the job have resulted in lower exposures. 4.44.1 At a miniimon. air purifying respirators (5.3) and special clothing shall be worn during the removal of abestoe insulation. Many plant* have found ili.poaahle dust make (5.3.1) (NIOSH approved for ubestoa) and disposable paper clothing, satisfactory. 5.1 It. -j.ii . .'(> |....*..ii..n '. ..: 1 . , ...i. v-nncl in :r<"i" ..h.rr p.--nii-.ilY-r,i *v .. \. > .-.Ir.*, K.-`]*tra'.'ry l-n'r. ii-'i. . t. .... I ............ ...11-cl 1*1. ' .1. 1.........................I. , I. . ..( 111.(!-: a. Du tv itm** *i s i* - jm `""i- Written plane for the installation of engineering controls or reaaona why they are not feasible dtould be available. c. :2 r .f I , . r . .. tI 5.2.1 Standard S2H should be referred to for further guidance in establishing a respirator program. a. This requirement doe* not apply to removal of insulation, fabricated, and protected to withstand repeated ...vas* r\e-u \ . .. vc ito vt* + Mg DUP 1130045 DU 056471 n* -H Thf# Pag* Rmr Oet ir* MEASUREMENT ANO CONTRC op asbestos oust exposurc ST Pago 3 5.3 \ ir j.jn f\i. i, -li.ill In- il-i-tl win i 'I.. | \\ \ rr.-uiublv rxjicri.. | u. > ml linuU iri sictiun i. 7.2 Typaa of Monitoring 5.3.1 Although OSHA permit* uk of both mglr uae or reusable ir purifying respirators for up to 10 times the limit* in lection 3, more recent respirator testing has indicated that single uae and quarter-mask respirators should not be used for more than 5 times the limits Ref (10), (11), and (12). Half-face air purifying respira tor* are acceptable for uae at up to 10 times the limits. 5.4 \tlllii-|illrri* -.||>|il\im: I Tip.- "( " .>uti;ui**.i- ll..,, ..r prr ure.iinuuml - ipplu, 1-.itr r`-pirji..r-. I .it.lr 'll nl Sill) ri'-pirutor- .lull hr tt-ul wli. n (hr IU \ ur ceiling roni'rntratii ns are rrasnnably r\[1.1 I'-'l in . \I I nl 10 times the limits in section J. 5.1 While powered air purifying respirators are per* nutted by OSHA when concentration* are expected to be between 10 end 100 timet the limits in section 3. these units are seldom used on Company plants. 5. lOVmnCATION OP AMCSTOt M MATERIALS SUSPECTED OP CONTAIN**) AMCSTOt (.1 PMC MMhoCa. There it no reliable field method for confirming the abaenoe of asbestos in materials suspected of containing asbestos. Visual examination alone is not sufficient to confirm the ebeence of aabestua. 5.1.1 A Harm taat Ref (9) using a propane torch can be used to screen sampiee. This teat provide* reliable indications of the presence of asbestos, but does not provide a reliable indication of the absence of asbestos. *4 'Laboratory Mottic da IMcroaeopte axaminatton can be used to determine the pretence or absence of asbestos in most rates. When rraulta of the microscopic examination are inconclusive, x-ray diffraction will pnividr reliable result*. 4.2.1 Samples (approximately I gram) ran be sent to Marshall Lab (7.4.1) for microscopic examination. Marshall Lab will arrange for x-ray diffraction analysis if the results of the microscopic examination are inconclusive. 524 Sample* can be sent to the Analytical and Physical Measurement Group, PP4R. Experimental Station for x-ray diffraction analysis. 524 The K* Taat for 5croanlog Aaboateo developed by NIOSH can be used to screen for asbestos. This teat provide* reliable indication* of the absence of asbestos. However, because the test is nonspecific, it will give false positive identification*. "3 i ['It i; il't. - n! !.. I.r. . ' i ...... in tin- -- . ............ 7 3 - iij.i iji in ,| i, I*. , mi: |..t., ,[, I, ;; ; ,i - ii.v.'i - ri pri'-. iil llic lev.-I .if i \ju..iir<' .if. -t .h.v. wi'h .< >ii'hh ji, tit,n ,, *- mi[tl.'w f,,r a. ! ruin.,ii .f !..,.|i it'll "ir lilur*wi'igl||,.|{ avcr.i|:' at.il n ihiip i -in ri.lr itioi.- -lldll lie ukrtt. 74.1 Sample* shall be uken for each type ofjob or when a job is changed in such a way as to increase asbestos exposure. 7.3.2 For rmplyr> v*h<nc r-xpowurf mav reason* '<!\ !m- f*r***d*5*n it t*xr rrsj tIt** limit'* *if *>' hou \ -impling *h ill Im* done at intrrv.il*. not greater than h month*. 7.3.3 ('filing *dfitfjlf* -hall lie taken tor ihua* whorl i-'-kw I'ttr voliH'h highr-t exposure i* rxp.* teil..Ceiling sample* for OSHA compliance testing should be taken for 15 minutes. Short-term samples may also be taken for ^hotter or longer periods (duration of a given task) for investigative purposes. 74.1 Mother* of sampling asbestos fibers in sir are given in Ref (3). Sampling procedure* should be reviewed with the laboratory which will count the fibers prior to sampling to help ensure proper tt-t;hnti)ues are used. Qualified laboratories, are: E. (. du Pont de .Nemours & Co Analytical Section Marshall Latwiratory 3500 Grays Ferry Avenue Philadelphia. PA 19146 Clayton Environmental CnrtMultanu 2571 Southfield Road Southfield, Ml 48075 National Loaa Gmtrol Service Corp (Lumberman Mutual Casualty Co) Environmental Sciences Laboratory Long Grove, 1L 60049 The sample should be taken at a rate of 1.5 to 2 liters per minute. The filter face should be positioned so that fibers will not settle on it. 7. MONfTORMO 7.1 Mt.llilnrim. i . i'.|,lir- .1 v,h* .'tllf'l. [m-.'il In .1-In -In- l*'-t I- ' *, irk r. I il I nunc (fie i uiplov-- '...................... ^orric-s -:.j .n . - mi\ ! I t ' 1 'i r "r. . 74.2 Sampling atmospheres containing asbeatoa fiber with low levels of other dusts: For exposures expected to be below 2 fibers per cm3, sample for 2 to 8 hours. DUP I 130046 DU 056472 $4 T Pag# 4 .*EASUREMCNT AND CONTROL OF ASBESTOS OUST EXPOSURE Thla Pag* Ratr Oct 1979 b. For exposures expected to lie above 2. but Imp than 5 fibers per cm3, sample fur 45 minute* to 4 hour*. C. For exposures expected to be higher than 5 fiber* per cm3, sample for 30 minutes to 2 hours depending upon experience and consultation with the laboratory which will count the fiber*. 7.4.3 Sampling atmospheres containing asbestos fiber* with high levels of other dusts: sample times will vary depending upon the amount of other dusts present. The laboratory which will count the fibers should be con sulted to obtain approximate sample times. 74.4 Equipment All sampling must be done on membrane filters of 0.8 micrometers porosity mounted in an Op*W f>Ct< niter holder. The Millipore cellu lose acetate 04 micrometer filter, catalog number MAWP 037AO, is recommended. Particulate sampling equipment is described in S13T, section 10. 744 Analysis must be done at qualified labora tories. Completed samples are placed in a mailing tube, sealed, and sent to a qualified laboratory with 2 copies of the sampling record. t. It is recommended that an unexposed filter be included with each batch of samples as a blank* b. \ii detrnttmulioM*. hall ! made by tin m> in* hr to* lilt, r method it 100 to I '.0\ t m.t^infit .ti*o) linm ib|*ettvri with phase contract iilimmi.itino. 74 Employ** Notification. Employees should be notified of exposure monitoring results. Any .mplovee im<I In have bn ii a \)io4`(i | .v tin |>i imi-dd <\ t'o-un* hunt- 111 m i dun t "Ii.* i I-*' nniitied, m writing. > it bin ** d n - <i| tin* toidiuu .im. a at nuri i lio- .i t i,tt ! mu i ikaot Notification ia required even if employee waa wearing protective equipment at the time of exposure. 74 Expoatlf* records shall be maintained at least 20 years. Other recordkeeping requirements will gen erally require records be kept for longer periods. 7.8.1 Employees and former employees shall have reasonable access to records which indicate the em ployee's own exposure to asbestos* 7.7 Affected employees or their representatives shall lie given reasonable opportunity to observe monitoring and review the results. 8. MEKNCAL SURVEILLANCE 8.1 Each site diould maintain !ist(s) of employees who have documented sabertoa exposure. The plant medical group must be kept informed of those listed. The list(s) should identify the following. 8.1.1 Those currently exposed to asbestos: * All employees working in jobs that require handling of asbestos which might become airborne (urh os carpenters working with Transite, insulators, pipefitter*, and millwrights). b. Alt employees working in johs which are ex posed to measurable quantities of asbestos. The lower limit of reliable quantification of the required measure ment technique is 0.1 fibers/em'1 of air. *ee Ref (4). 8.1.2 I hu*e who ilurtug their On Punt employment have previously worked m job* with an expmurr lescribcd in 8.1.1. 8.1.3 lhose with a known off.piant asl*-tm ex posure prior to or during employment at Du Pont. At time of employment and periodically thereafter, care should be taken to record any history of off-plant exposure to asbestos. 8.1.4 Those whose x-rays show changes of the type which are known to result from asbestos exposure. 8.2 Medical Examinations. IV. |d.rment, a...I t. runout ion ite .lit il . x .imio.it nm- mn-l be m nle nailable In * inpluve. . mi .in 44 nip,iimn . v po-rd tn j-he-lu"., | lu -e . v.inim.ili'iii' uni-1 imltide. .w a minifiiimi. a I* \ . In- x-ray, medi. d bi-t.ry, and pultnutiary function t.-t-. 8.8 "Guideline* for Physicians** [see Ref (5)] contains additional information o* interpretation and frequency of x-rays for asbestos exposed employees. 8. CLOTHING ANO CHANGE ROOMS 9.1 s*pcei;tl . bulling, 'IH-fl as .over alls, he id eovertUiS. ghv *->, and nut nvcrillg hall be require* 1 where ex po-iire* i \( ed ililtg limit* of . lion \ uiid during nun Will uf . *- iu-ul.lti m. t 1. 9.2 t Mi.titp* r*nms shall Im proud. d f**r . 1 .'lll|ll *\ ri's working in ji b- in which the 8-htnir W\ nr . riling limit ,.r.. iti.ni \ are * Xeeetled, 9.2.1 " I'" itr < b*t|ti! * |...k. r - nr -MU l.r .1 r mi*;. inents are re mm e. 1 lit lll|.*M- ll.mge r h.iiis to [.rev. III * 1 . l.lillillllt HMI U -t it et t billu-s (rout w rk .lot uma 9.3 I .mud. .i.'i. l i-l stu* nit' MOO i.i'. d > b tin - Mil ' d nit i*i \- ni il .. 1'M.I t ,,-b. 1. - lib. r- Mt1 > `b 9.3.1 1.... ! m. .1. *.. 1, . if..no. 1 fth rv * u U< * -1 1. I"' * l,,i . f .!- Mt ' - 9.3.2 ` "i.i m nan d * J .* t. .u.. . *. ab d iuq . M ' .bi. >`iil nt'.i r* 1 .` 1 i mi ! rd.u n -srtioii 12. 10. ERA ASBESTOS EMISSION REGULATIONS 10.1 AppHeaSeil. Regulations also have been promul gated by the Environmental Protection Agency (F.PA), Ref (7). These apply to friable asbestos materials which contain more than l percent asbestos by weight and which can be crumbled, pulveriard, or reduced to pow<ler by hand pressure when dry, Du Pont operations within this criterion normally will be limited to renovation or demolition involving asbestos insulation. 10.1.1 RgftOVaSOfl involves removing or stripping away mbestns from pipes, duct*, boilers, tanks, reactors, furnaces, other equipment or structural members. DamoIRtOfl involves wrecking or removal of a loadsupporting structural mrmltcr (beams or load-supporting ualls) and any related removing or stripping of friable asbestos materials. During damoMtlon asbestos -ball be removed or stripped priur to the wrecking or taking out of load-supporting structural member*. + 120 0UP 1130047 DU 056473 Thto fifli ftav Od 117$ MCAMMMIMT AND CONTRC OP AMGSTOS OUST EXPOSUftt s4 r Peg* 5 10.1.3 When an individually scheduled renovation of demolition job amount* to more titan the quantities fisted below, a detailed report shall Ik* filed with KPA (and in wme cases a ><ate or local agency) prior to removal. The removal operation shall follow the other requiremenU of thia standard, particularly 4.4. 1. 260 linear ft (80 m) of aabeatoa containing pipe insulation b. 160 ft* (IS m*) of asboftto*<'ontaining in* sulation on duett, boilera, tanka, or structural members For planned, but not indivhlually scheduled, renovations a long-range estimate of the total amount of asbestos to be removed or stripped must be made. The period covered must be at Inal SO days, but not more than a year. EPA must be given notice if the amounts estimated exceed* 10.1.2 a or b. 10.1.3 When renovation amounts to le*s than 10.1.2 a or b, notice to KPA is not required. 10.1.4 When demolition amounts to less than 10.1.2 a orb, a simplified report shall be filed with the KPA prior to removal. The removal operation also shall follow the other requirements of this standard, par* ttculariy 4.4. 10.1.5 flie requirement* of this standard should more than meet the additional precaution* specified by KPA regarding wetting, containerizing, di*po*al, and exhausting. 10.2 Waste Disposal. \ 11 .(-dwMlts fit* Itltlillg items -mh .* *ci.q>. bug* or bulling to lie >IU* carded, weuum sy*tnit olli tioo. ami oilier w.c*les whwh mas reate .nrtiome .lu*| emu miration*. di.iil lie iol* lif ted and disposed oi m *ej)eil, imperrm able bags, or on tamer'*, C.mlioi; l.di, U *lia(l lie att.ii lod . iitdormmg to "eetiotl 12. 10.2.1 All dispaai sites must have specific warning signs, fencing, and dust suppression methmls as required by the EPA regulation (40 CFR 61.25). 10.3 For specific report and compliance requirement*, refer to the KPA regulations, section 6l.22d of Ref (7). Local or state regulations also should be reviewed since they may be more restrictive. 11. TRAJNWta 11.1 lit areas where people work with asliestos, em ployee* should lie trained with the goal of increasing knowledge of: ft. Work practice* involving **Im**Io and the potrn* tial for filter emission* b. The physical characteristic* nf .i%Im*Ios C. Diseases wbieh may result from ex|>oorc to asU'stiM filter* including the role of oimking iti lung cancer d. Reason* for, and methods of. exposure monitoring Hie purpose ami nature of engineering and work practice control methods, personal probative <s|uipment and clothing, and personal hygiene DC.., 5^5 Qf >*<} ,r I* The elements of medical surveillance 12. CAUTION SIGNS AND LABELS 12 1 ` tuln.u ............!*.lining it. I i.ic ' -it ill I.. I',,'l'd 11 dl .ippn i- h* * lo ar*\.< uhrr*1 ,-1..!..* ..mo ' 'i * i ,> l n n mav [*< .tli.iM- [MTini'.iiiit* 11" s `ledI be placed ji u 'uffi* n til di*i m limit* pi mill in employee to read the <gtis ami take m * In Inn' nti ring the ,ir. a p;< < ,m(iuu. 12.2 ( JUtinn labels tonformiug i.< figure 2 *itail be u** t| to identify containers of raw material*, *4 rap, wai , nllu r prodml* < oot.untttg .idu *lis, nnl .i>die*i.s. emit umnated clothing. 12.3 Identification labels are suggested for identification of asbe*tos*rontaining and asbestos*free insulation, see 5N218P. 13. REFERENCES 1. Asbestos: An Information Resource, National Cancer Institute, DHKW Publication No. (NIH) 78-1681 (May 1978). 2. Selikoff, L. J., Hammond, E. C., Chay, j. P., `'Asbestos Exposure, Smoking and Neoplasia,'* JAMA 204:106-112 (1968). 3. NIOSH Method PftCAM 2.19: -Asbestos Fibers in Air,** NIOSH Manual of Analytical Methods, Second Ed, Vol I, DHEW (NIOSH) Publication No. 77-157-A. 4. "USPHS/NIOSH Membrane Filter Method by Evaluating Asbestos Fibers,** NIOSH Technical Report No. 79-127 (February 1979). $. Du Pont Medical Division, "Ouhielines for Physicians,** Section R, Interpretation of X*raya (March 29, 1979). 8. 'imhirtrial Ventilation - A Manual of Recom mended Practice,** 15th Kd, American Conference of (Governmental Industrial Hygienists (1978). 7. National Emission Standard for Asbestos, Title 40, CiM^e of Federal Regulations: Suhpart 9, 6120 ihmugh 61.25 (40 CFR 61.20-61.25). Originally published in Federal Register, 48292 (October 14, 1975). 8. (hx-opational Safety and Health Standard, Part 1910, section* 1910.1001 and 1910.144 (29 CFR 1910). 3. Paheo Technical Bulletin PTB - 4B-7A, "Asbestos Identification in Old C.alsid Insulation** (Fcbruarv 15. 1979). 10. MOSH/OSHA Kcipirator Decision Logic, OSHA luditstrial Hygiene Manual, Chapter ill. 11. K. Hyatt, "Respirator Prntntion Faetof*," (.as Alamos Scientific Laboratory Publication LA-6084 (January 1976). 12. P. L. Lowry ct al, "Performance of Single*l'*e Respirator*,'* American Industrial Hygiene Assoc J. 48. p 462 (Scpteinlier 1. 1977). 5____________________ OUP 1130048 DU 056474 S4T Page 6 .EASUREMEMT AND CONTROL OF ASBESTOS DUST EXPOSURE This Page Ittued Oct 1979 IM Block letter* on yellow background Letter sites and styles to be at Uatt at visible at that littad below: 1 Sant Serif, Gothic, or Block S/4W Sant Son I, Gothic, or Block ^4 Gothic ................. Spacing to bo ot laatt equal to tho height of tho upper of any two linoa ASBESTOS DUST HAZARD Avoid breathing duet Wear attignod protective equipment Do not remain in area unless your work requires it Breathing atbestas dust may bo hasardaus to your health FIGURE 1 * CAUTION SIGN, ASBESTOS OUST CAUTION Contains atbestas fibers Avoid creating dust Breathing asboetee dust may causa tarious bodily harm Label site and printing to bo readily visible and legible. FIGURE 2 - TYPICAL CAUTION LABEL* * Available from M4M Display*, 3301 Maiden Lane, Philadelphia, PA 19145 . : .-rrf OH; - t S-i"on 1?'0 ' ' ' r-r,9' DUP 1130049 DU 056475