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15101 Rules and Regulations r - -._ . Title 29--LABOR Chapter I--National Labor Relations Board PART 102--RULES AND REGULATIONS, SERIES 8 Subpart I--Service and Filing of Papers Proof of Service Section 102.112 is amended to read as 3.follows: j/. 102.112 Same; by parlies; proof of Service of papers by a party on other parties shall be made by registered mail, or by certified mail, or in any manner provided for the service of papers in a civil action by the law of the State in which the hearing is pending. Except for charges, petitions, exceptions, briefs, and other papers for which a time for both filing and response has been otherwise -established, service on all parties shall be made in the same manner as that utilized in filing the paper with the Board, or in a more expeditious manner; however, when filing with the Board is accom plished by personal service the other par ties shall be promptly notified of such action by telephone, followed by serv ice of a copy by mail or telegraph. When service is made by registered mail, or by certified mail, the return post office re . oeipt shall be proof of service. When service is made in any manner provided by the law of a State, proof of service shall be made in accordance .with such law. ''' Uhls section shall become effective upon date of publication (8-13-71). Ogden W. Fields, Executive Secretary. fFR Doc.71-11719 Filed 8-12-71:8:60 ami Chapter XVII--Occupational Safety and Health Administration, Depart ment of Labor PART 1910--OCCUPATIONAL SAFETY AND HEALTH STANDARDS Miscellaneous Amendments On May 29, 1971, occupational safety and health standards were promulgated (36 FJR. 10466). Subsequent review of the standards, and comments and requests for information from the public have pointed up the need for some clarifica tions, corrections, and changes in effec tive dates of standards. Reconsideration of "additional delay in effective date" provisions in various subparts of 29 CFR Part 1910 has shown that the scope of the provisions is too broad, and Includes standards for which exceed the cel] no delay Is necessary for compliance. The material in the table. purpose of some of the amendments is (2) Other materials--8-hour time -to limit the additional delay provisions weighted averages. An employee's expo to the specific standards that need addi sure to any material in table G-l, the tional time, so that the other standards name of which is not preceded by "C", in may become effective sooner. On the any 8-hour work shift of a 40-hour work other hand. Subpart J of Fart 1910 1s week, shall not exceed the 8-hour time amended to give for the first time an weighted average given for that material additional delay to specified provisions. in the table. Section 1910.179(b)(2) has been re vised in order to give some time for the modification of existing overhead and gantry cranes, and to reflect accurately the American National Standards In stitute (ANSI) standard from which the provision is derived. Similar changes have been made in S 1910.180 (crawler, locomotive, and truck cranes) and in {1910.181 (derricks), for the same reasons. ' Section 1910.217(a)(2) has been re vised in order to give 36 months for the modification of presently Installed mechanical power presses. The delay is given in the ANSI standard adopted in the section. ' Section 1910.93 (air contaminants) has been revised in its entirety, in the inter est of greater intelligibility and accuracy. (b) Table0-2: (1) 8-hour time weighted averages. An employee's exposure to any material listed In table G~2, in any 8-hour work shift of a 40-hour work week, shall not exceed the 8-hour time weighted average limit given for that material in the table. (2) Acceptable ceiling concentrations. An employee's exposure to a material listed in table G-2 shall not exceed at any time during an 8-hour shift the ac ceptable celling concentration limit given for the material in the table, except for a time period, and up to a concentration not exceeding the maximum duration and concentration allowed In the column under "acceptable maximum peak above the acceptable ceiling concentration for an 8-hour shift". Several different dates have been (3) Example. During an 8-hour work changed to August 31, 1971, in order to shift, an employee may be exposed to a achieve greater uniformity throughout concentration of Benzene above 25 p.pjn. Part 1910. Other amendments are made (but never above 50 p.pjn.) only for a to correct mistakes, supply omissions, maximum period of 10 minutes. Such ex and to provide greater clarity. posure must be compensated by expo Accordingly, pursuant to authority In sures to concentrations less than 10 section 6(a) and 8(g) of the Williams- p.pjn. so that the cumulative exposure Steiger Occupational Safety and Health for the entire 8-hour work shift does not Act of 1970 (84 Stat. 1593,1600; 29 US.C. exceed a weighted average of 10 p.pjn., 655, 357), 29 CFR Part 1910 is hereby (c) Table G-3: An employee's expo amended as set forth below. The provi sure to any material listed in table 0-3, sions of 5 US.C. 553 concerning notice of in any 8-hour work shift of a 40-hour proposed rule making, public participa work week, shall not exceed the 8-hour tion therein, and delay in effective date are Inapplicable by virtue of the excep tion to 5 U.S.C. Chapter 5 provided in section 6(a) of the Act. In addition, notice and public procedure are unneces sary because of the nature of the amend ments, and impracticable, because of the time weighted average limit given for that material In the table. (d) Computation formulae: ' (1) (1) The cumulative exposure for an 8-hour work shift shall be computed as follows: need to give as much advance notice as E=c.r.-!-cr+ . . . c.r possible of tiie changes before August 27, 1971, when many standards in Part 1910 8 become effective. Part 1910 is amended as follows: Nfaere: E Is the equivalent exposure lor the work 1. Section 1910.93 of Subpart G is re ing shift. vised to read as follows: C is the concentration during any period of time T where the concentration remains 1910.93 Air contaminants. constant. . An employee's exposure to any mate rial listed in table G-l, G-2, or G-3 of T Is the duration in hours of the exposure at the concentration C. this section shall be limited in accord The value of E shall not exceed the 8- ance with the requirements of the follow hour time weighted average limit In table ing paragraphs of this section. G-l, G-2, or G-3 for the material (a) Table G-l: involved. (1) Materials with names preceded by (ii) To illustrate the formula pre "C"--Ceiling Values. An employee's ex scribed in subdivision (i) of this subpara posure to any material in table G-l, the graph, note that isomyl acetate has an name of which is preceded by a "C" (e.g., 8-hour time weighted average limit of C Boron trifluorlde). shall at no time 100 p.pjn. (table G-l). Assume that an FEDERAL REGISTER, VOL 36, NO. 157--FRIDAY, AUGUST 13, 1t71 ~ I . :> I* i I U II nH* u 15102* RULES AND REGULATIONS employee is subject to the following exposure: Two hours exposure at .150 p.pjn. Two hours exposure at 75 p.pjn. Pour hours exposure at 60 p.p.m. Substituting this information in the formula, we have 2X150+2 X 75 +4 X 60 --------------------------------=81 p.pjn. 8 Since 81 p.p.m. is less than eight, the 8hour time weighted average limit, the exposure is acceptable. (2) (i) In case of a mixture of air con taminants an employer shall compute the equivalent exposure as follows: o, c, c. En=---- 1----- h ... -- B, Lj . Where: Em Is the equivalent exposure for the mixture. C is the concentration of a particular con taminant. L is the exposure limit for that contami nant, from table 0-1, G-2, or G--3. The value of E shall not exceed unity (1). (ii) To illustrate the formula pre scribed in subdivision (i) of this sub paragraph. consider the following exposures: Material Actual concentration of 8-hour exposure 8-hour timo weighted average exposure Limit Acetone (Table 0-1)............ 600p.p.m... 1,000 p.p.m. 2-Butanone (Table G-l)... 45p.p.m----- 200p.pjn. Toluene (Table Q-2)............40 p.pjn------- 200 p.pjn. Substituting in the formula, we have: E = 500+ 45+ 40 1,000+200 + 200 Em =*0500+0225 + 0200 Em-0925 Since Em is less than unity (1), the expo sure combination is within acceptable limits. (e) To achieve compliance with para graph (a) through (d) of this section, administrative or engineering controls must first be determined and imple mented whenever feasible. When such controls are not feasible to achieve full compliance, protective equipment or any other protective measures shall be used to keep the exposure of employees to air contaminants within the limits pre scribed in this section. Any equipment and technical measure use for this pur pose must be approved for each particu lar use by a competent industrial hygien ist or other technically qualified person. Whenever respirators are used, their use shall comply with 51913.134 of this chapter. Table G-I Substance p.p.m.* mp./M* * Acetaldehyde........................... 200 360 Acetic anhydride......................... 5 20 Acetone.......................................... 1,000 2,400 Acetonitrile................................. 40 70 Acetylene dichloride, see 1,2* Dichloroethylene................................................................ Acetylene tetrabromide.............. 1 14 Acrylamide--Skin............................................. Acrylonitrile--Skin...................... 20 Aldrin Skin..................................................... Alls'! alcohol--Skin...................... 2 Aliy] chloride..................................... 1 CAUylglycidyl ether (AGE). 10 Allyl propyl disulfide....................... 2-Amlnocthanol, see Ethanol- 2 0.3 45 0.2.' 5 3 45 12 2-Amlnopyridlne................... 0.6 2 Ammonium sulfamate (Am-. . n-Amyl acetate............................. sec-Axnyl acetate.......................... Aniline--Skin...................... - - * * * 100 125 5 525 650 10 Antimony and compounds (as Sb)........................................ ANTU (alpha naphthyl thiourea).................. Arsenicand compounds (as AS). Arsine............................................ Azlnphos-methyl--Skin ------- Barium (soluble compounds)... p-Benzoquinone, see Quinone. - 0.05 Benzoyl peroxide........ ................. Benzyl chloride............................ 1 Biphenyl,see Diphenyl....-- Bisphenol A, see Diglycldyl - ether........................................... Boron oxide................................... C Boron trifluoride...................... 1 Bromine........................................ Bromoform--Skin...................... ai 0.5 Butadiene (1,3-butadiene).-... 1,000 Butanethiol, see Butyl mer captan..................................... 2-Butanooe.................................... 200 2-Butoxy ethanol (Butyl Cel- losolve)--Skin....................... . Butyl acetate (n-butyl acetate). 50 150 sec-Butyl acetate.......................... 200 tert-Butyl acetate........................ 200 Butyl alcohol................................ sec-Butyl alcohol.......................... tert-Butyl alcohol........................ C Bntylamine--Skin.................. 100 150 100 5 C tert-Butyl chromate (as CrOi)--8kin.............................. n-Butyl glycidyl ether (BGE).. 50 Butyl mercaptan........................ 10 p-tert-Butyltolueno..................... 10 Calcium arsenate......................... Calcium oxide............................... Camphor.................................. Carbaryl (8evin)...................... Carbon black................................ Carbon dioxide............................. 5,000 Carbon monoxide........................ 50 Cblordane--8kin.......................... Chlorinated campbene--Skin... Chlorinated diphenyl oxide....... Chlorine....................................... 1 Chlorine dioxide..... ..................... C Chlorine trifluoride................. 0.1 ai C Cbloroacetaldebyde................ 1 o-Cbloroacetophenone (pbenacylchloride)................... 0.05 Chlorobenzene (monochloro benzene).................................... 75 0-Chlorobenxylidene malononltrile (OCBM)....... 0.05 Chlorobromomethane.------------- 200 2-Chloro-l,3-butadiene, see Cbloroprene.............................. . Chlorodipbenyl (42 percent Chlorine)--Skin........................ Chlorodipbenyl (54 percent Chlorine)--Skin....................... 1-Cbloro,2,3-epoxypropane, see Epichlorbydrin......................... 2-Chloroethanol, see Ethylene chlotohydrin.............................. Chloroethylene, see Vinyl cboride........................................ C Chloroform (tricbloromethane)................................. . l-Chloro-l-nltropropane............ . Chloropioin................... ........... . 60 20 ai Chloropreoa (2-chloro-l,3butadiene)--Skin.................... . 25 0.5 0.3 0.5 0.2 0.2 0.5 5 . 15 3 a7 5 2 200 590 240 710 950 950 300 450 300 15 ai 270 35 60 6 3.5 0,000 55 as as as. 3 0.3 a4 3 a3 350 a4 1,050 1 as 240 100 a7 90 Table G-I--Continued Substance p.p.m.* mg./M> Chromium, sol. chromic, Metal and insol. salts................. *.................. Coal tar pitch volatiles (ben zene soluble fraction) anthra cene, BaP, phenanthrene, acridine, chrysene, pyrene............................ Cobalt, metal fume and dust.......................... l 0.2 0.1 Dusts and Mists.................................................... Cotton dust (raw).................................................... Crag herbicide........................................ 15 Crcsol (all isomers)--Skin.......... Crotonoldehyde............................ 5 2 22 6 Cumene--Skin.............................. 60 216 Cyanide (os CN)--Skin......................................... Cyclohexane.................................. 300 1,050 1 1 5 Cyclohexanone............................. 50 200 Cyclopentadtene.......................... 75 ,'200 2,4-D.................................................................. 10 DDT--Skin........................................................ 1 DDVP, see Dichlorvos........................................................ Decaborane--Skin........................ 0.05 0.3 Diacetone alcohol (4-hydroxy- 4-methyl-2-pentanone)............. 50 1.2-diaminoetnane, see Ethylenedlamine......................................... Diazomethane............................... a2 Diborane........................................ a1 Dibutylphthalate.......................................... . C o-Dichlorobenzebe................... 50 p-DJchlorobenzene....................... 75 Dicblorodifluoromethane............ 1,000 1.3-Dlchlon>5,&*<limethyl 240 0.4 0.1 6 300 460 4,950 hydantoin.................................................... . 0.2 1.1-Dichloroethane...................... 100 400 1.2-Dichloroethylene.................... 200 790 C Dichloroethyl ether--8kin... 16 90 Dlchloromethane, see- Methylenechloride....................................... Dichloromonofluoromethane... 1,000 4,200 C 1,1-Dichloro-l-nltroethsne----- 10 60 1.2-Dichloropropane, see Propylenedicnloride.................................. . Dlchlorotetrafluoroethane.......... 1,000 7,000 Dichlorvos (DDVP)--Skin........................... 1 Dieldrin--Skin............................................... 0.25 Dletbylamine............................... 25 75 Dlethylamino ethanol--Skin... 10 50 DIethylether, see Ethyl ether..................... . Difluorodlbromomethane........... 100 C Diglycldyl ether (D OE)........ a5 2.8 Dihydroiybenzene, see Hydroquinone..................................................................... Dlisobutyl ketone...................... * 50 . 290 Dllsopropylamine--Skin______ 5 20 Dimethoxymethane, see Methylal.............................................................................. Dimethyl acetamide--Skin........ 10 35 Dimethylamine............................ 10 18 Dimethylaminobenzene, see Xyiidene............................................................................. Dimethylaniline(N-dimethyl- anlline)--Skin........................... 5 25 Dlmethylbenzene, see Xylene............................................. Dimethyl l,2-dlbromo-2,2-dl- * chloroethyl phosphate, (Dibrom)......................................................... 3 Dimethylformamide--Skin........ 10 30 2,6-Dimethylheptanone, see Diisobutyl ketone............................................................... 1.1-Dimethylhydrazine--8kin__ as 1 Dimethylphthalate.................................................. 5 Dimethylsulfate--Skin.......... . 1 5 Dinitrobenzene (all isomers)-- Skin........................................................................ 1 Dinitro-o-cresol--Skin............................................. a2 Dlnltrotoluene--8kin.............................................. ! Dioxane (Diethylene dioxide)-- Skin............................................ 100 360 Diphenyl....................................... 0.2 1 Dlphenylmethane diisocyanate (see Methylene bisphenyl isocyanate (MDI)................ ........................ Dipropylene glycol methyl ether--Skin..-.......................... 100 600 Di-sec, octyl phthalate (Di-2- ethylhexylphthalate)........................................... . Endrln--Skin...................................................... .* Eplchlorhydrin--Skin................. 5 M_ EPN-Skin........................................................ 1.2.-E..p.o..x.y.p.r.o.p..a.n.e..,.s.e.e.................................... 2.3-Epoxy-l-propanol, see Olycidol........................................................................... Ethanethiol, see Ethylmercaptan..... .......... ........................................... ................ -- See footnotes at end of table. FEDERAL REGISTER, VOt. 36, NO. 157--FRIDAY, AUGUST 13, 1971 1*- RULES AND REGULATIONS 15103 Table <3--1--Continued Table G-I--Continued Table G-I--Continued Substanoe p.p.ra.* mg./M* Substance p.pm.* mg./M* * Substance p.p-m.* mg./M> ` Etbanolamine............... 2-EthoxyethanoI--SkinA-r^........ 2200300_ j-EthoxyetbylaoeUt (CUo- solve acetate)--Skin........... Ethyl acetate................................ Ethyl acrylate--8kln.................. Ethyl alcohol (ethanol).............. Ethylamlne........................ too 11.,004400*2210000*00505 Ethyl seoamyl ketone (5* metbyi*3*beptanone), . - Ethyl benzene........................... 25 110000 Ethyl bromide..................... 200 Ethyl butyl ketone (* ' Heptanone).................. Ethyl chloride....................... Ethyl ether.................................. Ethyl formate.............................. O Ethyl mercaptan.................... Ethyl silicate..................... -- Ethylene chlorohydrin--8km:. Etbylenedlamlne......................... 30 11,.0044,1A000001Or00000t 100 5 10 Ethylene dibromide, see 1,2* Dlbromoetbane........................ Ethylene dtchloride, see 1,2- Dlchloroethane......................... C Ethylene glycol dinltrate and/or Nitroglycerin--Skin... *0.2 Ethylene glycol monomethyl ether acetate, see Methyl celloeolvo acetate................. Ethylene Inline--Skin..............- <U Ethylene oxide............................. 50 Ethylldine chloride, see 1.1* Dichloroethane......................... N-Ethylmorphollne--Skin......... 20* Ferbam........................................ FerroTanadlom dust................. Fluoride (as F)............................. Fluorine........................................ 0.1 Fluorotricbloromethane............. 1.,000 Formic add............................... 5" Furfural--8kin......................... 5 Furturyl alcohol....................... . 50 Giyddol (2,3-Epoxy-l- propanol)................................. 50 Glycol monoethyl ether, see 2*Ethoxyethanol................... Guthion. see Ailnphos- methyl..................................... Tnfnlnm . ............ eptachlor--Skin...................... heptane (n-heptane)................ 500 Hexachloroethane--skin.......... 1 Hexachloronapbthalene--Skin. Hexane (n-heiane)............... . 500 2-Hexanone......................... 100 Hexone (Methyl Isobutyl ketone)............................ 100 ec-Hexyl aoetate............... 30 Hydrazine--Skin.............. 1 Hydrogen bromide........... 3 C Hydrogen chloride......... 5 Hydrogen cyanide--Skin. 10 Hydrogen peroxide (90%). Hydrogen selenlde............ . 1 a os Hydroqulnone................... . C Iodine........................... Iron oxide fume................. . ai Isoamyl aoetate.................. 100 Isoamyl alcohol.................. 100 Isobutyl aoetate.......................... 150 Isobutyl alcohol........................... 100 Isophorone..-............................... 25 Isopropyl acetate........................ 250 Isopropyl alcohol......................... 400 Isopropylamine......................... 5' Isopropylether.............................. 500 Isopropyl glyddyl ether (IGE). 50 Ketene.......................................... 0.5 Lead arsenate............................... . Lindane--Skin........................... Lithium hydride........................... L.P.G. (liquified petroleum , gas)............................................. 1,000 Magnesium oxide fume............... . Malathion--Skin.......................... Maleic anhydride......................... 0.25 C Manganese................................ Mesityl oxide................................ 25 Methanethlol, see Methyl mercaptan.................................. Methoxychlor................................. 2>Methoryethanol, see Methyl cellosolve..................................... Methyl acetate........................... .2.0.0 Methyl acetylene (propyne)___ 1,000 Methyl acetylene-propadiene mixture (MAPP)..................... 1,000 Methyl acrylate--Skin................ 10 tbyial (dimethoxymethane).. 1,000 sbyl alcohol (methanol)......... 200 thylamine................................ 10 methyl amyl alcohol, see Methyl isobutyl carblnol................... 6 740 1,451040000 1,90108 413350 890 2,620300 1,200 300 82530 16 25 1 00 04 15 1 2.6 0.2 5,600 9 20 200 16b as as 2,000 10 0.2 1,800 410 410 , 300 1.3 10 7 11 L4 a2 2 1 10 525 300 700 300 140 950 960 12 2,100 24a0 o a 15 a6 a 025 1,800 15 15 1 5 100 16 610 1,650 1,800 35 3,100 260 12 Methyl (n-emyl) ketone (2* Heptanone)............................... 100 C Methyl bromide--8kin........... 20 Methyl butyl ketone, see 2- Hexanone................................... Methyl cellosolve--8kin............. 25 Methyl cellosolve acetate--Skin 25 Methyl chloroform...............................3.5..0. Methylcyclohexane...................... 600 Methylcyclobexanol.................... 100 o-Metbyicydohexanone--Skin.. 100 Methyl ethyl ketone (MEK), see 2-Butanone.................... ..................... . Methyl formate............................ 100 Methyl !odide-8kin................... 5 Methyl Isobutyl carblnol--Skin. 25 Methyl Isobutyl ketone, see Hexone........................................................ Methyl isocyanate--Skin............ a 02 C Methyl mercaptan-................. 10 Methyr methacrylate................ 100 Methyl propyl ketone, see 2- Pentanone..................................................... C a Methyl styrene..................... 100 C Methylene bisphenyl isocyanate (MDI)........... a 02 Molybdenum: Soluble compounds........... Insoluble compounds........ Monomethyl aniline--Skin. 2 C Monomethyl hydrazine-- Skin............... .................... 0.2 Morpholine--8kln................. _20 Naphtha (coaltar)........................ 100 Naphthalene................................. 10 Nickel carbonyl........................... a 001 Nickel, metal and soluble cmpds, as Ni..'............................................ Nicotine--Skin................................................. Nitric add....................... 2 Nitric oxide. 25 - P-Nltroaniline--Skin. 1 Nitrobenzene--Skin.. 1 p*Nltrochlorobenzene--Skin.... Nltroethane................................ I 100 Nitrogen dioxide.......................... 5 Nitrogen trifluoride..................... 10 Nitroglycerin--8kin.................... a2 Nitrometbmne.............................. 100 1-Nltropropane............................. 25 2-Nitropropane............................ 25 Nltrotomene--Skin..................... 5 Nitrotrlchloromethane, see Chloropicrio.............................. 466 80 80 120 1,900 2,000 470 460 260 28 100 aos 20 410 480 a2 5 15 9 a 35 70 400 , SO a 007 as 6 30" 6 5 1 310 9 29 2 250 90 90 30. Octachloronaphthalene--Skin.. Octane........................ 500 Oil mist, mineral........................ Osmium tetroxlde........................ Oxalic acid.................................. : Oxygen difiuortde........................ Ozone............. .............................. a os ai Paraquat--Skin........................... Petrole m distillates (naptha).. 500 Propane...................... ................ 1,000 811ver, metal and solnble com pounds....................................... Sodium flaoroacetate (1080)-- Skin............................................ Sodium hydroxide....................... Stlblne.......................................... ai Stoddard solvent....................... 600 Strychnine.................................... ............ Sulfur dioxide............................... 6 Sulfnr hexafluoride...................... 1,000 Sulfuric add.............................................. Sulfur monochloride.................. 1 Sulfur pentafiuoride.................. a 025 8ulfuryl fluoride......................... 5 Systox, see Demeton ............ 2,4,5T........................................... Tantalum.. --.............................. TEDP--8kin............................. . Tellurium.................. ................. Tellurium hexafluoride.............. a 02 TEPP--Skin.............................. . C Terphenyls.............................. 1.1.1.2-TetrachIoro-212-difluoro- ai 2,360 6a 002 1 r ai a2 as 2,000 1,800 a oi aos 2 as 2,950 a is 13 6,000 1 6 0.25 20 ....... io""' 5 aa2i 0.2 aos 9 ethane........................................ 1.1.2.2-Tetrachloro-l^-dlfluoro- 600 4.170 ethane........................................ 600 1.1.2.2-TetrHChioroethane--Skin 6 Tetrachloroethylene, see Per- chloroethylene........................................... Tetrschloromethane, see Carbon 4.170 35 tetrachloride............................................... Tetrachloronaphthalene--Skin.................. . Tetraethyl lead (as Pb)--Skin.................. Tetrahydrofuran......................... 200 2 a 075 690 Tetrametbyl lead (as Pb)~ Skin............................................................. . a 075 Tetrametbyl suodnonltrUe-- 8kin............................................ a5 3 Tetranitromethane...................... I 8 Tetryl (2,4.8-trinltrophenyl- methylnltramlne)--SUn....... Thallium (soluble com- pounds)--SUn is TL........... . Thlrsm.......... ............................ Tin (Inorganic cmpds, exoept oxides................................ ...... Tin (organic cmpds)_____ ____ C Toluene-2,4-dllsocyanatc.... a 02 o-Toluldlne--8kin..................... Toxaphena, see Chlorinated 8 camphene...................................................... . Tributyl phosphate. ....................................... 1.1.1-Tncnlorocthane aee Methyl chloroform......................................... 1.1.2-Trichloroethane--SUn____ 10 Par&thlon--Skin................................. ........... Pentaborane.................................. a 006 Pentachloronaphthalene--Skin.................... Pentachlorophenol--Skin................................ Pentane........................................ 1,000 2-Pentanone...'............................. 200 Percbloromethyl mercaptan___ al Perchloryl fluoride____________ 3 Phenol--8kln_............................. 3 P-Phenylene diamine--Skin.......................... Phenyl ether (vapor)................... 1 Phenyl ether-biphenyl mixture (vapor)............'......... 1 Phenylethylene, see Styrene......................... Phenylglycidylether(PGE)... Phenylhydrazlue--Skin.............. 10 6 Pbosdrln (Mevlnphos )-- SUn................ ............................................ Phosgene (carbonyl chloride)... al phoephlne..................................... a3 Phosphoric add...... ...................................... Phosphorus (yellow)............. ..................... Phosphorus pcntacbloride............................... Phosphorus pentssulflde................................. Phosphorus trichloride.............. Phthslle anhydride..................... a6 2 Ptaio add--Skin.............................................. Pival (2-Pivalyl-l,S- lndandione).................... ............................. Platinum (Soluble Salta) aa Pt........................................ ........................... Propergyl alcohol--Skin.. n-Propyl acetate................ Propyl alcohol-.................. 1 200 200 n-Propyl nitrate............... Propylene dtchloride____ Propylene Inline--Skin________ Propylone oxide............................ 23 75 _2 100 Propyne, see Methylscetylene.................... . Pyrethrum.......................................... ............. Pyridine........................................ 6 Oninone......................................... al RDX--Skin.......................................... ;........ . Rhodium, Metal fume and dusts, as Rh................................................ . 8olublo salts.................................................. RonneL........... ......... ................. .................... . Rotenone (commercial).... ............................. . Selenium compounds (asSe)......................... Selenium hexafluoride............. . a OS Tltauiumdioxide.............. .............................. Trichloromethane, aee Chloro form.............................................. ................ Trichloronaphthalene--Skin........ 1.2.3-Trichkropropane.................. 1,1,2-TrichIoro 1,23-trtfluoro- 30 ethane...................................... 1,000 Triethylamlne.............................. 2S Trifluoromouobromomethano-- 1,000 2.4.8-Trtnitrophenol, see Picric acid..........______ ........__ 2.4.8-Trinltrophenybnethylnltramlne, see TetryL................ Trinitrotoluene--Skin................. Triorthocresyl phosphate.............. Triphenyl phosphate...................... Turpentine. Uranium (soluble compounds)... Uranium (Insoluble compounds).. C Vanadium: VjOrdust...................................... VrO fume.................................. . Vinyl beniece, see Styrene______ C Vinyl chloride....................... Vinyleyanide, see Acrylonitrile... Vinyl toluene................................ Warfarin..... ...................................... Xylene (xylol)............................... XyUdlne--Skin............................ Yttrium............................................ Zinc chloride fame........................... Zinc oxide fume.......... .................... Zirconium compounds (as Zr)___ 100 300 100 100 3 See footnotes at end of table. 1.6 Oil 5 2 0.1 a 14 22 43 0.1 1 aaos as ' 2,950 700 103..86 19 ai 7 00 22 ai a4 0.4 1 ai 1 1 3 12 ai ai aoo2 840 300 110 330 5 240 3 IS a4 us ai a 001 10 5 a2 0.4 is s 300 7,800 100 8,100 L5 ai 3 380 0.03 a25 as ai 1,300 480 ai 433 23 1 1 5 3 No. 157--Pt. I----- 2 FEDERAL REGISTER, VOL 36, NO. 157--FRIDAY, AUGUST 13, 1971 15104 RULES AND REGULATIONS 1970 Addition. Parts of vapor or gas per million parts of contami nated air by volume at 25 C. and 760 mm. Hg pressure. * Approximate milligrams of particulate per cubic meter of air. ,. , , _ (No footnote "c" is used to avoid confusion with ceiling value notations.) 'An atmospheric concentration of not more than 0.02 p.p.m., or personal protection may be necessary to avoid headache. As sampled by method that does not collect vapor. / For control of general room air, biologic monitoring is essential for personnel control. Table 0-2 Material 8-hour time weighted average Acceptable celling concentration Acceptable maximum peak above the acceptable celling concentra tion for an 8-hour abut. Concentration Maximum duration ____ _ 10 p.p.m___........25 p.p.m................ 50 p.p.m............. 2 iig_.AM*____....... 6#t-/M*................. 25 Mg./M*............. 30 minutes. T&7.29-1970). ` ` 1Z37.&-JV7U).......................... u.img./M*............ amg./rn*............................................... Z37.6-19701........................... 0.2mg./M>............ 0.6mg./M>............................................ ' ____ __________ . .. ____ Do. Carbon tetrachloride (Z37.17-1967)-------- 10 p. ..p.m___ .. 200 p. ..p.m......-...... any 4 hours. Ethylene dibromide (Z37.31-1970)................ 20 p.pjn..............JOp.pjn................50 p.pjn............... 6 minutes. Ethylene dlchlorlde (Z37.21-1969).................60 p.pjn................100 p.pjn.............. 200 p.p.ra............6 minutes In any 3 hours.- Formaldehyde (Z37.16-1987) ., Hydrogen fluorlde_(Z37-28HL969)----------------- ----do. Fluoride as dust (Z37.28-1969)....................... 2.65mgg..//MM''........................................................................... Dead and Its Inorganic compounds (Z37.ll- 0.2 mg./M. I960). Methylene Chloride (Z37.3-1969). 100 p.pjn........ 200 p.pjn........ . 600 p.p.m____ 1,000 p.pjn___ any 3 hours. ... 6 minutes In any 2 hours. (c) Notwithstanding anything In paragraph (a), (b), or (d) of this sec tion, any provision in any other section of this subpart which contains in itself a,specific effective date or time limita tion shall become effective on such date or sham apply in accordance with such limitation. (d) Notwithstanding anything in par agraph (a) of this section, if any stand ard in 41 CFR Fart 50-204, other than a national consensus standard incor porated by reference in 50-204.2(a) (1), .is or becomes applicable at any time to any employment and place of employ ment, by Virtue of the WaJlsh-Healey Public Contracts Act, or the Service Con tract Act of 1965, or the National Foun dation on Arts and Humanities Act of 1965, any corresponding established Federal standard in this Subpart G which is derived from 41 CFR Part 50 204 shall also become effective, and shall be applicable to such employment and place of employment, on the same date. 3. Section 1910.114 of Subpart H Is revised to read as follows: 1910.114 ^Effective dates. any 3 hours. ... 5 minutes in any 2 hours. Tetrachloroethylene (Z37.22-1967). any 3 hours. Toluene (Z37.12-1967)............... : Hydrogen sulfide (Z37.2-1966). 200 p.pjn........ 300 p.pjn........ ___ 500 p.p.m___ ... 10 minutes. 20 p.pjn.......... ... 10minutes once only Ifno other measur able exposure occurs. Mercury (Z37.8-1971)...................................................................lmgJ10M>. Chromic acid and chromates (Z37.7-1971).......................................do *---- (a) The provisions of this Subpart H shall become effective on August 27, 1971, except as provided in the remain ing paragraphs cl this section. Ob) The following provisions shall be come effective on February 15,1972: 51910.101(b). 5 1910.102. 5 1910.103 (a)(2). (b)(1) (1), (b) (1) (Ul). (b) (3) (11),and (b)(3). 5 1910.106. 5 1910.106 (b)(1).. (b)(2), (b)(3), and (b) Table G-3--Mineral Dusts Substance Mppcf Mg/M* Silica: Crystalline: Quartz (respirable)............... 250f lOmg/M* - %8lOr+5 %S10:+2 Quartx (total dust)............... 30mg/M* Cristobalite: Use K the value calculated from the count or mass formulae for quartz. Tridymite: Use K the value calculated from the formulae for quartz. Amorphous, Including natural dlatomaceous earth............... %810t+2 20 8Qmg/M* Millions of particles per cubic foot of air, based on impinger samples counted by light-field technics. 1 The percentage of crystalline silica in the formula Is the amount determined from air-borne samples, except In those instances in which other methods have been shown to be applicable. I As determined by the membrane filter method at 430 X phase contrast magnification. Both concentration and percent quartz for the application of this limit are to be determined from the fraction passing a size-selector with the following characteristics: Aerodynamic diameter (unit density sphere) Percent passing selector 2 90 2.5 75 3.6 50 5.0 25 10 0 (4). 5 1910.106 (b)(5), (c)(4), (c)(2), (c)(3), (c)(4). (c).(6). (c)(6). (d)(2), (d)(3) (II). (d)(4)(i), (d)(4) (111), (d) (4) (lv), (d) (6) (v), (d)(5) (vi) (a), (e)(3) (111), (e) (3) (v), (e)(4),- (e)(7), (f)(2) (HI), (f)(3) (I), (f)(4) (ill), (f) (4) (lv), (f)(4) (viii),(f) (6), (g), (h),and (1). 5 1910.107(b)(1), (b)(2), (b)'(3), (b)(4), (b) (6) (1), (b) (6) (111), (b) (6) (lv). (b) (6). (b)(7), (b)(8), (b) (10), (c)(1). (c)(4), (c) (6), (c)'(6). (c)'(7). <d), (e) (7). (e) (8). (f)(4), (f)(2), (b), (1). (J),(l)(2), (1) (3), (1)'(5), (1)'(6), (1)'(7), and (m)(l). 5 1910.108 (b), (c), (e)(1). (g)(2). (g)(3), (g) (4), and (g)(6). 5 1910.108 (g)(6) and (h). 5 1910.110. 5 1910.111. Tremolite................................... Silicates (less than 1% crys talline silica): Asbestos--12 fibers per milliliter greater than 5 microns in length * or.. _. Mica............... ........................ Talc......................................... Portland cement................... Graphite (natural).................. Coal dust (respirable fraction less than 5% 8iO)............... For more than 5% SIOj........... Inert or Nuisance D\jst: ^ Respirable fraction............... Total dust.............................. %8I0i 6 20ing/M' %8iO 2 20 20 20 50 15 2.4mg/M lOmg/M* %6IOrf2 15 5mg/M* 50 15mg/M* Note: Conversion factors-- mppcfX35.3*million particles per cubic meter --particles per c.c. (c) Notwithstanding anything in The measurements under this note refer to the use of an AEC instrument. If the respirable fraction of coal dust is determined with a MRE the figure corresponding paragraph (a), (b), or (d) of this-sec tion, any provision in any other section to that of2.4 Mg/M* in the table for coel dust is 4.5 Mg/M* of this subpart which contains in itself a specific effective date or time limitation 2. Section 1910.98 of Subpart G Is re shall become effective on such date or vised to read as foUows: shall apply in accordance with such 1910.98 Effective dates. limitation. (d) Notwithstanding anything to (a) - The provisions of this Subpart G paragraph (a), or (b) of this section, if GhaH become effective oh. August 27, any standard In 41 CFR Part 50-204, 1971, except as provided in the remaining other than a national consensus stand paragraphs of this section. ard incorporated by reference to 5 50- (b) The following .provisions shall be come effective on February 15, 1972: 204.2(a)(1), is or becomes applicable at any time to any employment and place of employment, by virtue of the Walsh- 11910.94 (a) (2) (111), (a) (3),`(a)(4), (to). Healey Public Contracts Act, or the Serv (c)(2). (C)(3), (C)(4). (c)(6). (C)(6)(i). ice Contract Act of 1965, or the National (c) (6) (it), (d)(l)(il). (d)(3). (d)(4). Foundation on Arts and Humanities Act (d)(6), and (d)'<7). of 1965, any corresponding established FEDERAL REGISTER, VOL 36, NO. 157--FRIDAY, AUGUST 73, 1971