Document DMb7Z0NjjBVGeMMKQyw0xoBwQ

....... - Lead Industries Association, Inc; ' M Mtdwon Avngi f*r VorH. K, V. 10017 T%p^on: (tlfj 9714090 TOi REi January 29, 1971 All Members of the LIA Baalth and Safety Committee Revisions In Threshold Limit Values Enclosed is a notification of intended changes in Threshold Limit Values for 1971. Please note th|hee intended reetduction of the TLV fronpr lle.aad^ ffrronma 0O .2) mg/m3 fto. f0t .115C mmwg//wmm'* If any member has information pertinent to this change. we would appreciate your making it available to LIA so that we may formulate our position 90 the change. Haturally, we would also be grateful for your opinion as to the justification of the change and its impact on the industry. This notice takes on special importance in view of the signing of the Federal Health and Safety Act by the President on December 29. This act empowers the Secretary of Labor to set standards for occupational health and provides for enforcement by rederal Inspectors. It is likely that Threshold Limit Value will, at least initially, serve as standards. Sincerely yours. . . . . . . , . . . . .... - j a i .j ,i . , . - ^ iLo-j.,. /.n u *fc n *t DMBieo Enc* David M. Borcina Secretary, Treasurer LIA14475 r j i i 1 .-1 r COMMITTEE OH THRESHOLD LIMITS of th* AMERICAN CTNFERXNCE OE GOVERNMENTAL INDUSTRIAL HTCIEN1STS 1971 NOTICE PE INTENDED CHANCES Thl* Notie* of Intended Chaos** 1 publt*hd ao that lndustry^connacted Individual* principally, but otb*r* alao, u; havt an opportunity to h*lp ahap* tha dallbaratlona of tha Cooaltta* prior to ita recommendations of tantatlv* chans** In tha 1970 Thr*hold Limits Llat. Thla can b* dona by submitting to th* Chairman comment* on tha lntandad chans**, with aupportlns data, or by aubalttlns new data on substances not within tha No tiea, Thlt Notlc* la not blndlns on th* Coonltta* to plac* all aubatanca* llttad below In th* 1971 Edition, nor doaa it raatrlct th* Cooaltta* to th*** *ub*tanc**| tubttancca with appropriate aupportlns data received following th* publication of thla lltt will be con*ld*r*d at th* neat Coaslttee meeting for lnclualon In th* 1971 Edition. Thla Notice Indicate* only thoae aubitance* that ar* under conalderatlon by the Connie tee. A* documentation become* available, requests for auch documentation will be honored for tbo*a aubatance* bearing a threihold Halt value in thlt Notice. Thote *ubatanc* ll*t*d without a TLV originated from request* of th* Cooaltta* during th* year, but for which th* Coositte* lacked Information to recomend a TLV. Thu*, *uch lilting* aerv* notlc* of th* need for toxicologic information on chase aubataoc**. All toxicologic Information aupportlng a new TLV or rcvlilon of an old Limit ahculd reach the Chairman by March IS, 1971. Addreati Or. Herbert E. Stoklnger, U.S. Public Health Service, 1019 Broadway, Cincinnati, Ohio 95202. If preferred. Information may be tent to the Kepoiltory of Anonymou* Occupational Health Data, c/o Dr. R.T.P. deTrevlllc, Industrial Hygiene Foundation, 5231 Centre AVC no*, Pittsburgh, Pa. 15232 Th* enclosed list of Proposed Revision* and Additions for th* 1971 Threshold Limit* Lltt h*s resulted from the fall matting of th* Plenary Committee. N 3532.01 -Vr"" ^v5 LIA14476 SUBSTANCES Chloroform Fluorine Lead, (all forms axcept highly lnaoluble) Toluene REVISIONS UNDER CONSIDERATION FROM 1970 LIST C SO ppa 0.1 PP a 0.2 ag/a 200 ppa PROPOSED FT* 1971 LIST 25 ppa 1 ppa 0.15 ag/a3 100 ppa ADDITIONS UNDER CONSIDERATION SUBSTANCE Blsauth tellurlde ('undoped') Bismuth tellurlde (Slenlua-doped) Butane Ceprolactea Cerlua Cyclohexylaalne Dlquat Dlsulfoton (Dlayatonvs/) Ethylene glycol Class dust Hexachlorocyclopentadlane Methylene blahloranlllne Mcthacrylonltrlle Mineral vool fiber Monoisopropyl biphenyl Monopropylene glycol methyl ether Nltrllotrlacctlc ecld (NTA) Parafln wax fuse Perlite Phorata (Thiaet >e) Silicon Vinyl broalde PROPSED LIMIT 10 ng/aj 1 ag/a 500 ppa 100 ppa 10 ag/aJ 0.1 PF * 10 ag/a'' C 100 ppa 5 ag/a3 250 ppa SUBSTANCES FOR WHICH ENQUIRIES FT* TLV HAVE BEEN RECEIVED BUT 70S WHICH THE CCM4ITTE2 LACKS DATA Alkyl alualnua Alkyl phosphide 1, 2-BuCadlene Dibenzyl disulfide Dlchlorobutene Dlaethyl acetylene Dimethyl sulfoxide Dlnltrophenol Isosorblde dlnltrata Methyl trlcbloroallana Nlckal dlcyclopentedlane Nltrogentrlchlorlde Trlchlorobenztne | Artt* iff1 1 i