300 Toxic and Hazardous
Substances
300.01 Scope
300.02 Definitions Applicable
to this Section
300.03 General Requirements
300.04 Prohibited use of
Cyanide or Cyanide Mixtures
300.05 Air Contaminants
300.06 Computation Formula
300.07 Disposal of Hazardous
and Toxic Waste Material
300. TOXIC AND HAZARDOUS SUBSTANCES. (7-1-97)
01. Scope: (7-1-97)
a. The use and exposure to toxic and to hazardous substances shall conform to all other applicable requirements of this standard, as well as the following provisions. Nothing in this standard shall be construed to prohibit better or otherwise safer conditions than specified herein. (7-1-97)
02. Definitions: For definitions of terms used in this section, see sub-section 010 of this standard. (7-1-97)
03. General Requirements: (7-1-97)
a. Rules and Regulations of the State Department of Health and Welfare shall be complied with by every employer and shall be enforced as provided for by law. (7-1-97)
b. Any type of paint, solvent, or cleansing liquids containing toxic additives shall have a label on each and every box, package or container showing thereon the name and type of such ingredients and/or toxic additives and the amount of each. (7-1-97)
c. The requirements and procedures for specific materials/substances are contained is other sections of this standard. (7-1-97)
04. Prohibited use of Cyanide or Cyanide Mixtures: (7-1-97)
a. Use of compounds containing dimethylomano-propionitrile, or bis (2 dimethylamino, ethyl, ether), in the sewer grout process, is hereby prohibited. (7-1-97)
b. The term bis (2-dimethylamionom ethyl, ether) shall also include compounds referred to as 2,2' oxybis (N, N dimethylethylamine). (7-1-97)
c. The term dimethylamenopropionitrile shall also include compounds referred to as 3 - (dimethylamino) propionitrile. (7-1-97)
05. Air contaminants: (7-1-97)
a. An employee's exposure to any material listed in Table 300.05-A, of this section shall be limited in accordance with the requirements of the following sub-section. (7-1-97)
b. An employee's exposure to any material in Table 300.05-A, the name of which is preceded by a "C" (Ceiling Value) shall at no time exceed the ceiling value given for that material in the table. If instantaneous monitoring is not feasible, then the ceiling shall be assessed as a fifteen (15) minute time weighted average exposure which shall not be exceeded at any time during the working day. (7-1-97)
c. An employee's exposure to any material in Table 300.05-A, the name of which is not preceded by "C", in any eight (8) hour work shift of a forty (40) hour work week, shall not exceed the eight (8) hour weighted average given for that material in the table. (7-1-97)
| TABLE 300.05-A | ||||
| LIMITS FOR AIR CONTAMINANTS | ||||
| Substance | CAS No.c | ppma1 | mg\m3b1 | Designation |
| Acetaldehyde | 75-07-0 | 200 | 360 | |
| Acetic acid | 64-19-7 | 10 | 25 | |
| Acetic anhydride | 108-24-7 | 5 | 20 | |
| Acetone | 67-64-1 | 1000 | 2400 | |
| Acetonitrile | 75-05-8 | 40 | 70 | |
| 2-Acetylaminofluorene | 53-96-3 | |||
| Acetylene dichloride, see 1, 2- Dichloroethylene | ||||
| Acetylene tetrabromide | 79-27-6 | 1 | 14 | |
| Acrolein | 107-02-8 | 0.1 | 0.25 | |
| Acrylamide | 79-06-1 | 0.3 | X | |
| Acrylonitrile | 107-13-1 | |||
| Aldrin | 309-00-2 | 0.25 | X | |
| Allyl alcohol | 107-18-6 | 2 | 5 | X |
| Allyl chloride | 107-05-1 | 1 | 3 | |
| Allyl glycidyl ether (AGE) | 106-92-3 | C10 | C45 | |
| Allyl propyl disulfide | 2179-59-1 | 2 | 12 | |
| alpha-Alumina Total dust Respirable fraction |
1344-28-1 | 15 5 |
||
| 4-Aminodiphenyl | 92-67-1 | |||
| 2-Aminoethanol, see Ethanolamine | ||||
| 2-Aminopyridine | 504-29-0 | 0.5 | 2 | |
| Ammonia | 7664-41-7 | 50 | 35 | |
| Ammonium
sulfamate Total dust Respirable fraction |
7773-06-0 | 15 5 |
||
| n-Amyl acetate | 628-63-7 | 100 | 525 | |
| sec-Amyl acetate | 626-38-0 | 125 | 650 | |
| Aniline | 62-53-3 | 5 | 19 | X |
| Anisidine (o,p-isomers) | 29191-52-4 | 0.5 | X | |
| Antimony and compounds (as Sb) | 7440-36-0 | 0.5 | ||
| ANTU (alph Naphthylthiourea) | 86-88-4 | 0.3 | ||
| Arsenic, inorganic compounds (as As) | 7440-38-2 | |||
| Arsenic, organic compounds (as As) | 7440-38-2 | 0.5 | ||
| Arsine | 7784-42-1 | 0.05 | 0.2 | |
| Asbestos | 4 | |||
| Azinphos-methyl | 86-50-0 | 0.2 | X | |
| Barium, soluble compounds (as Ba) | 7440-39-3 | 0.5 | ||
| Barium
sulfate Total dust Respirable fraction |
7727-43-7 | 15 5 |
||
| Benomyl Total dust Respirable fraction |
17804-35-2 | 15 5 |
||
| Benzened | 71-43-2 | |||
| Benzidine | 92-87-5 | |||
| p-Benzoquinone, see Quinone | ||||
| Benzoapyrene Coal tar pitch volatiles |
||||
| Benzoyl peroxide | 94-36-0 | 5 | ||
| Benzyl chloride | 100-44-7 | 1 | 5 | |
| Beryllium compounds (as Be) | 7440-41-7 | 2 | ||
| Biphenyl, see Diphenyl | ||||
| Bismuth
telluride Undoped Total dust Respirable fraction |
1304-82-1 |
15 |
||
| Boron
oxide Total dust |
1303-86-2 | 15 |
||
| Boron trifluoride | 7637-07-2 | C1 | C3 | |
| Bromine | 7726-95-6 | 0.1 | 0.7 | |
| Bromoform | 75-25-2 | 0.5 | 5 | X |
| Butadiene (1, 3-butadiene) | 106-99-0 | 1000 | 2200 | |
| Butanethiol, see butyl mercaptan | ||||
| 2-Butanone (Methyl ethyl ketone) | 78-93-3 | 200 | 590 | |
| 2-Butoxyethanol | 111-76-2 | 50 | 240 | X |
| n-Butyl acetate | 123-86-4 | 150 | 710 | |
| sec-Butyl acetate | 105-46-4 | 200 | 950 | |
| tert-Butyl-acetate | 540-88-5 | 200 | 950 | |
| n-Butyl alcohol | 71-36-3 | 100 | 300 | |
| sec-Butyl alcohol | 78-92-2 | 150 | 450 | |
| tert-Butyl alcohol | 75-65-0 | 100 | 300 | |
| Butylamine | 109-73-9 | C5 | C15 | X |
| tert-Butyl chromate (as CrO3) | 1189-85-1 | C0.1 | X | |
| n-Butyl glycidyl ether (BGE) | 2426-08-6 | 50 | 270 | |
| Butyl mercaptan | 109-79-5 | 10 | 35 | |
| p-tert-Butyltoluene | 98-51-1 | 10 | 60 | |
| Cadmium (ac Cd) | 7440-43-9 | |||
| Calcium
Carbonate Total dust Respirable fraction |
1317-65-3 | 15 5 |
||
| Calcium
hydroxide Total dust Respirable fraction |
1305-62-0 | 15 5 |
||
| Calcium oxide | 1305-78-8 | 5 | ||
| Calcium
silicate Total dust Respirable fraction |
1344-95-2 | 15 5 |
||
| Calcium
sulfate Total dust Respirable fraction |
7778-18-9 | 15 5 |
||
| Camphor, synthetic | 76-22-2 | 2 | ||
| Carbaryl
(Sevin |
62-25-2 | 5 | ||
| Carbon black | 1333-86-4 | 3.5 | ||
| Carbon dioxide | 124-38-9 | 5000 | 9000 | |
| Carbon disulfide | 75-15-0 | 2 | ||
| Carbon monoxide | 630-08-0 | 50 | 55 | |
| Carbon tetrachloride | 56-23-5 | 2 | ||
| Cellulose Total dust Respirable fraction |
9004-34-6 | 15 5 |
||
| Chlordane | 57-74-9 | 0.5 | X | |
| Chlorinated camphene | 8001-35-2 | 0.5 | X | |
| Chlorinated diphenyl oxide | 55720-99-5 | 0.5 | ||
| Chlorine | 7782-50-5 | C1 | C3 | |
| Chlorine dioxide | 10049-04-4 | 0.1 | 0.3 | |
| Chlorine trifluoride | 7790-91-2 | C0.1 | C0.4 | |
| Chloroacetaldehyde | 107-20-0 | C1 | C3 | |
| a-Chloroacetophenone (Phenacyl chloride) | 532-27-4 | 0.05 | 0.3 | |
| Chlorobenzene | 108-90-7 | 75 | 350 | |
| o-Chlorobenzylidene malononitrile | 2698-41-1 | 0.05 | 0.4 | |
| Chlorobromomethane | 74-97-5 | 200 | 1050 | |
| 2-Chloro-1, 3-butadiene, see beta-Chloroprene | ||||
| Chlorodiphenyl (42% Chlorine) (PCB) | 53469-21-9 | 1 | X | |
| Chlorodiphenyl (54% Chlorine) (PCB) | 11097-69-1 | 0.5 | X | |
| 1-Chloro-2, 3-epoxypropane, see Epichlorhydrin | ||||
| 2-Chloroethanol, see Ethylene chlorohydrin | ||||
| Chloroethylene, see Vinyl chloride | ||||
| C Chloroform (trichloromethane) | 67-66-3 | C50 | C240 | |
| bis(Chloromethyl) ether | 542-88-1 | |||
| Chloromethyl methyl ether | 107-30-2 | |||
| 1-Chloro-1-nitropropane | 600-25-9 | 20 | 100 | |
| Chloropicrin | 76-06-2 | 0.1 | 07 | |
| beta-Chloroprene | 126-99-8 | 25 | 90 | X |
| 2-Chloro-6
(trichloromethyl) pyridine Total dust Respirable fraction |
1929-82-4 | 15 |
||
| Chromic acid and chromates (as CrO3) | 4 | 2 | ||
| Chromium (II) compounds (as Cr) | 7440-47-3 | 0.5 | ||
| Chromium (III) compounds (as Cr) | 7440-47-3 | 0.5 | ||
| Chromium metal and insol. salts (as Cr) | 7440-47-3 | 1 | ||
| Chrysene, see Coal tar pitch volatiles | ||||
| Clopidol Total dust Respirable fraction |
2971-90-6 | 15 5 |
||
| Coal dust (less than 5% SiO2), respirable fraction | 3 | |||
| Coal dust (greater than or equal to 5% SiO2) respirable fraction | 3 | |||
| Coal tar pitch volatiles (benzene soluble fraction) anthracene, BaP, phenanthrene, acridine, chrysene, pyrene | 65966-93-2 | 0.2 | ||
| Cobalt metal, fume, and dust (as Co) | 7440-48-4 | 0.1 | ||
| Coke oven emissions | ||||
| Copper Fume (as Cu) Dusts and Mists (as Cu) |
744-50-8 | 0.1 1 |
||
| Cotton duste | ||||
| Crag Total dust Respirable fraction |
136-78-7 | 15 5 |
||
| Cresol, all isomers | 1319-77-3 | 5 | 22 | X |
| Crotonaldehyde | 123-73-9 4170-30-3 |
2 | 6 | |
| Cumene | 98-82-9 | 50 | 245 | X |
| Cyanides (as CN) | 4 | 5 | ||
| Cyclohexane | 110-82-7 | 300 | 1050 | |
| Cyclohexanol | 108-93-0 | 50 | 200 | |
| Cyclohexanone | 108-94-1 | 50 | 200 | |
| Cyclohexene | 110-83-8 | 300 | 1015 | |
| Cyclopentadiene | 542-92-7 | 75 | 200 | |
| 2, 4-D (Dichlorophenoxyacetic acid) | 94-75-7 | 10 | ||
| Decaborane | 17702-41-9 | 0.05 | 0.3 | X |
| Demeton (Systox) | 8065-48-3 | 0.1 | X | |
| Diacetone alcohol (4-hydroxy-4-methyl-2-pentanone) | 123-42-2 | 50 | 240 | |
| 1,2-diaminoethane, see Ethylenediamine | ||||
| Diazomethane | 334-88-3 | 0.2 | 0.4 | |
| Diborane | 19287-45-7 | 0.1 | 0.1 | |
| 1,2-Dibromo-3-chloropropane (CBCP) | 96-12-8 | |||
| 1,2-Dibromoethane; see Ethylene dibromide | ||||
| Dibutyl phospate | 107-66-4 | 1 | 5 | |
| Dibutyl phthalate | 84-74-2 | 5 | ||
| o-Dichlorobenzene | 95-50-1 | C50 | C300 | |
| p-Dichlorobenzene | 106-46-7 | 75 | 450 | |
| 3,3'-Dichlorobenzidine | 91-94-1 | |||
| Dichlorodifluoromethane | 75-71-8 | 1000 | 4950 | |
| 1,3-Dichloro-5, 5-dimethyl hydantoin | 118-52-5 | 0.2 | ||
| Dichlorodiphenyltrichloroethane (DDT) | 50-29-3 | 1 | X | |
| 1,1-Dichlorethane | 75-34-3 | 100 | 400 | |
| 1,2-Dichloroethylene; see Ethylene dichloride | ||||
| 1,2-Dichloroethylene | 540-59-0 | 200 | 790 | |
| Dichloroethyl ether | 111-44-4 | C15 | C90 | X |
| Dichloromethane, see Methylene chloride | ||||
| Dichloromonofluoromethane | 75-43-4 | 1000 | 4200 | |
| 1,1-Dichloro-1-nitroethane | 594-72-9 | C10 | C60 | |
| 1,2-Dichloropropane, see Propylene dichloride | ||||
| Dichlorotetrafluoroethane | 76-14-2 | 1000 | 7000 | |
| Dieldrin | 60-57-1 | 0.25 | X | |
| Diethylamine | 109-89-7 | 25 | 75 | |
| 2-Diethylamino ethanol | 100-37-8 | 10 | 50 | X |
| Diethyl ether; see Ethyl ether | ||||
| Difluorodibromomethane | 75-61-6 | 100 | 860 | |
| Diglycidyl ether (DGE) | 2238-07-5 | C0.5 | C2.8 | |
| Dihydroxybenzene; see Hydroquinone | ||||
| Diisobutyl ketone | 108-83-8 | 50 | 290 | |
| Diisopropylamine | 108-18-9 | 5 | 20 | X |
| 4-Dimethylaminoazobenzene | 60-11-7 | |||
| Dimethoxymethane, see Methylal | ||||
| Dimethyl acetamide | 127-19-5 | 10 | 35 | X |
| Dimethylamine | 124-40-3 | 10 | 18 | |
| Dimethylaminobenzene, see Xylidene | ||||
| Dimethylaniline (N,N-Dimethylaniline) | 121-69-7 | 5 | 25 | X |
| Dimethylbenzene, see Xylene | ||||
| Dimethyl 1, 2-dibromo-2, 2-dichloroetnyl phosphate (Dibrom) | 300-76-5 | 3 | ||
| Dimethylformamide-Skin | 68-12-2 | 10 | 30 | X |
| 2, 6-Dimethyl-4-heptanone, seeDiisobutyl ketone | ||||
| 1, 1-Dimethylhydrazine | 57-14-7 | 0.5 | 1 | X |
| Dimethylphthalate | 131-11-3 | 5 | ||
| Dimethyl sulfate | 77-78-1 | 1 | 5 | X |
| Dinitrobenzene
(all isomers) (ortho) (meta) (para) |
528-29-0 99-65-0 100-25-4 |
1 | X | |
| Dinitro-o-cresol | 534-52-1 | 0.2 | X | |
| Dinitrotoluene | 25321-14-6 | 1.5 | X | |
| Dioxane (Diethylene dioxide) | 123-91-1 | 100 | 360 | X |
| Diphenyl (Biphenyl) | 92-52-4 | 0.2 | 1 | |
| Diphenylmethane diisocyanat; see Methylene bisphenyl isocyanate | ||||
| Dipropylene glycol methyl ether | 34590-94-8 | 100 | 600 | X |
| Di-sec, octyl phthalate (Di-(2-ethylhexyl)phthalate) | 117-81-7 | 5 | ||
| Emery Total dust Respirable fraction |
12415-34-8 | 15 5 |
||
| Endosulfan | 115-29-7 | 0.1 | X | |
| Endrin | 72-20-8 | 0.1 | X | |
| Epichlorhydrin | 106-89-8 | 5 | 19 | X |
| EPN | 2104-64-5 | 0.5 | X | |
| 1, 2-Epoxypropane, see Propylene oxide | ||||
| 2, 3-Epoxy-1-propanol, see Glycidol | ||||
| Ethanethoil, see Ethyl mercaptan | ||||
| Ethanolamine | 141-43-5 | 3 | 6 | |
| 2-Ethoxyethanol (Cellosolve) | 110-80-5 | 200 | 740 | X |
| 2-Ethoxyethyl acetate (Cellosolve acetate) | 111-15-9 | 100 | 540 | X |
| Ethyl acetate | 141-78-6 | 400 | 1400 | X |
| Ethyl acrylate | 140-88-5 | 25 | 100 | X |
| Ethyl alcohol (ethanol) | 64-17-5 | 1000 | 1900 | |
| Ethylamine | 75-04-7 | 10 | 18 | |
| Ethyl amyl ketone (5-methyl-3-heptanone) | 541-85-5 | 25 | 130 | |
| Ethyl benzene | 100-41-4 | 100 | 435 | |
| Ethyl bromide | 74-96-4 | 200 | 890 | |
| Ethyl butyl keton (3-Heptanone) | 106-35-4 | 50 | 230 | |
| Ethyl chloride | 75-00-3 | 1000 | 2600 | |
| Ethyl ether | 60-29-7 | 400 | 1200 | |
| Ethyl formate | 109-94-4 | 100 | 300 | |
| Ethyl mercaptan | 75-08-1 | C10 | C25 | |
| Ethyl silicate | 78-10-4 | 100 | 850 | |
| Ethylene chlorohydrin | 107-07-3 | 5 | 16 | X |
| Ethylenediamine | 107-15-3 | 10 | 25 | |
| Ethylene dibromide | 106-93-4 | 2 | ||
| Ethylene dichloride (1,2-Dichloroethane) | 107-06-2 | 2 | ||
| Ethylene glycol dinitrate | 628-96-6 | C0.2 | C1 | X |
| Ethylene
glycol monomethyl ether acetate, see
Methyl cellosolve acetate |
||||
| Ethyleneimine | 151-56-4 | |||
| Ethylene oxide | 75-21-8 | |||
| Ethylidine chloride, see 1, 1-Dichloroethane | ||||
| N-Ethylmorpholine | 100-74-3 | 20 | 94 | X |
| Ferbam Total dust |
14484-64-1 | 15 |
||
| Ferrovanadium dust | 12604-58-9 | 1 | ||
| Fluorides (as F) | 4 | 2.5 | ||
| Fluorine | 7782-41-4 | 0.1 | 0.2 | |
| Fluorotrichloromethane (Trichlorofluoromethane) | 75-69-4 | 1000 | 5600 | |
| Formaldehyde | 50-00-0 | |||
| Formic acid | 64-18-6 | 5 | 9 | |
| Furfural | 98-01-1 | 5 | 20 | X |
| Furfuryl alcohol | 98-00-0 | 50 | 200 | |
| Grain dust (oat, wheat, barley) | 10 | |||
| Glycerin
(mist) Total dust Respirable fraction |
56-81-5 | 15 5 |
||
| Glycidol | 556-52-5 | 50 | 150 | |
| Glycol monoethyl ether, see2-Ethoxyethanol | ||||
| Graphite, natural Respirable dust | 7782-42-5 | 3 | ||
| Graphite,
synthetic Total dust Respirable dust |
15 5 |
|||
| Guthion®, see Azinphos methyl | ||||
| Gypsum Total dust Respirable fraction |
13397-24-5 | 15 5 |
||
| Hafnium | 7440-58-6 | 0.5 | ||
| Heptachlor | 76-44-8 | 0.5 | X | |
| Heptane (n-heptane) | 142-82-5 | 500 | 2000 | |
| Hexacholoroethane | 67-72-1 | 1 | 10 | X |
| Hexachloronaphthalene | 1335-87-1 | 0.2 | X | |
| n-Hexane | 110-54-3 | 500 | 1800 | |
| 2-Hexanone (Methyl n-butyl ketone) | 591-78-6 | 100 | 410 | |
| Hexone (Methyl isobutyl ketone) | 108-10-1 | 100 | 410 | |
| sec-Hexyl acetate | 108-84-9 | 50 | 300 | |
| Hydrazine | 302-01-2 | 1 | 1.3 | X |
| Hydrogen bromide | 10035-10-6 | 3 | 10 | |
| Hydrogen chloride | 7647-01-0 | C5 | C7 | |
| Hydrogen cyanide | 74-90-8 | 10 | 11 | X |
| Hydrogen fluoride (as F) | 7664-39-3 | 2 | ||
| Hydrogen peroxide | 772-84-1 | 1 | 1.4 | |
| Hydrogen selenide (as Se) | 7783-07-5 | 0.05 | 0.2 | |
| Hydrogen sulfied | 7783-06-4 | 2 | ||
| Hydroquinone | 123-31-9 | 2 | ||
| Iodine | 7553-56-2 | C0.1 | C1 | |
| Iron oxide fume | 1309-37-1 | 10 | ||
| Isomyl acetate | 123-92-2 | 100 | 525 | |
| Isomyl alcohol (primary and secondary) | 123-51-3 | 100 | 360 | |
| Isobutyl acetate | 110-19-0 | 150 | 700 | |
| Isobutyl alcohol | 78-83-1 | 100 | 300 | |
| Isophorone | 78-59-1 | 25 | 140 | |
| Isopropyl acetate | 108-21-4 | 250 | 950 | |
| Isopropyl alcohol | 67-63-0 | 400 | 980 | |
| Isopropylamine | 75-31-0 | 5 | 12 | |
| Isopropyl ether | 108-20-3 | 500 | 2100 | |
| Isopropyl glycidyl ether (IGE) | 4016-1-4-2 | 50 | 240 | |
| Kaolin Total dust Respirable fraction |
1332-58-7 | 15 5 |
||
| Ketene | 463-51-4 | 0.5 | 0.9 | |
| Lead inorganic (as Pb) | 7439-92-1 | |||
| Limestone Total dust Respirable fraction |
1317-65-3 | 15 5 |
||
| Lindane | 58-89-9 | 0.5 | X | |
| Lithium hydride | 7580-67-8 | 0.025 | ||
| L.P.G. (liquified petroleum gas) | 68476-85-7 | 1000 | 1800 | |
| Magnsite Total dust Respirable fraction |
546-93-0 | 15 5 |
||
| Magnesium
oxide fume Total particulate |
1309-48-4 | 15 |
||
| Malathion Total dust | 121-75-5 | 15 |
X |
|
| Maleic anhydride | 108-31-6 | 0.25 | 1 | |
| Manganese compounds (as Mn) | 7439-96-5 | C5 | ||
| Manganese fume (as Mn) | 7439-96-5 | C5 | ||
| Marble Total dust respirable fraction |
1317-65-3 | 15 5 |
||
| Mercury (aryl and inorganic) (as Hg) | 7439-97-6 | 2 | ||
| Mercury (organo) alkyl compounds (as Hg) | 7439-97-6 | 2 | ||
| Mercury (vapor) (as Hg) | 7439-97-6 | 2 | ||
| Mesityl oxide | 141-79-7 | 25 | 100 | |
| Methanethiol, see Methyl mercaptan | ||||
| Methoxychlor Total dust |
72-43-5 | 15 |
||
| 2-Methoxyethanol (Methyl cellosolve) | 109-86-4 | 25 | 80 | X |
| 2-Methoxyethyl acetate (Methyl cellosolve acetate) | 110-49-6 | 25 | 120 | X |
| Methyl acetate | 79-20-9 | 200 | 610 | |
| Methyl acetylene (propyne) | 74-99-7 | 1000 | 1650 | |
| Methyl acetylene-propadiene mixture (MAPP) | 1000 | 1800 | ||
| Methyl acrylate | 96-33-3 | 10 | 35 | X |
| Methylal (dimethoxy-methane) | 109-87-5 | 1000 | 3100 | |
| Methyl alcohol | 67-56-1 | 200 | 260 | |
| Methylamine | 74-89-5 | 10 | 12 | |
| Methyl amyl alcohol; see Methyl Isobutyl carbinol | ||||
| Methyl n-amyl ketone | 110-43-0 | 100 | 465 | |
| Methyl bromide | 74-83-9 | C20 | C80 | X |
| Methyl butyl ketone; see 2 Hexanone | ||||
| Methyl cellosolve; see 2-Methoxyethanol | ||||
| Methyl cellosolve acetate; see 2-Methoxyethyl acetate | ||||
| Methyl chloride | 74-87-3 | 2 | ||
| Methyl chloroform (1,1,1-Trichloroethane) | 71-55-6 | 350 | 1900 | |
| Methylcyclohexane | 108-87-2 | 500 | 2000 | |
| Methylcyclohexanol | 25639-42-3 | 100 | 470 | |
| o-Methylcyclohexanone | 583-60-8 | 100 | 460 | X |
| Methylene chloride | 75-09-2 | 2 | ||
| Methyl ethyl ketone (MEK); see 2-Butanone | ||||
| Methyl formate | 107-31-3 | 100 | 250 | |
| Methyl hydrazine (Monomethyl hydrazine) | 60-34-4 | C0.2 | C0.35 | X |
| Methyl iodide | 74-88-4 | 5 | 28 | X |
| Methyl isoamyl ketone | 110-12-3 | 100 | 475 | |
| Methyl isobutyl carbinol | 108-11-2 | 25 | 100 | X |
| Methyl isobutyl ketone, see Hexone | ||||
| Methyl isocyanate | 624-83-9 | 0.02 | 0.05 | X |
| Methyl mercaptan | 74-93-1 | C10 | C20 | |
| Methyl methacrylate | 80-62-6 | 100 | 410 | |
| Methyl propyl ketone, see 2-Pentanone | ||||
| alpha Methyl styrene | 98-83-9 | C100 | C480 | |
| Methylene bisphenyl isocyanate (MDI) | 101-68-8 | C0.02 | C0.2 | |
| Mica; see Silicates | ||||
| Molybdenum
(as Mo): Soluble compounds Insoluble compounds Total dust |
74-39-98-7 | 5 15 |
||
| Monomethyl aniline | 100-61-8 | 2 | 9 | X |
| Monomethyl hydrazine; see Methyl hydrazinr | ||||
| Morpholine | 110-91-8 | 20 | 70 | X |
| Naphtha (coal tar) | 8030-30-6 | 100 | 400 | |
| Naphthalene | 91-20-3 | 10 | 50 | |
| alpha-Naphthylamine | 134-32-7 | |||
| beta-Naphthylamine | 91-59-8 | |||
| Nickel carbonyl (as Ni) | 13463-39-3 | 0.001 | 0.007 | |
| Nickel, metal and insoluble compounds, (as Ni) | 7440-02-0 | 1 | ||
| Nickel, soluble compounds (as Ni) | 7440-02-0 | 1 | ||
| Nicotine | 54-11-5 | 0.5 | X | |
| Nitric acid | 7697-37-2 | 2 | 5 | |
| Nitric oxide | 10102-43-9 | 25 | 30 | |
| p-Nitroaniline | 100-01-6 | 1 | 6 | X |
| Nitrobenzene | 98-95-3 | 1 | 5 | X |
| p-Nitrochlorobenzene | 100-00-5 | 1 | X | |
| 4-Nitrodiphenyl | 92-93-3 | |||
| Nitroethane | 79-24-3 | 100 | 310 | |
| Nitrogen dioxide | 10102-44-0 | C5 | C9 | |
| Nitrogen trifluoride | 7783-54-2 | 10 | 29 | |
| Nitroglycerin | 55-63-0 | C0.2 | C2 | X |
| Nitromethane | 75-52-5 | 100 | 250 | |
| 1-Nitropropane | 108-03-2 | 25 | 90 | |
| 2-Nitropropane | 79-46-9 | 25 | 90 | |
| N-Nitrododimethylamine | ||||
| Nitrotoluene
(all isomers) o-isomer m-isomer p-isomer |
88-72-2 99-08-1 99-99-0 |
5 | 30 | X |
| Nitrotrichloromethane, see Chloropierin | ||||
| Octachloronaphthalene | 2234-13-1 | 0.1 | X | |
| Octane | 111-65-9 | 500 | 2350 | |
| Oil mist, mineral | 8012-95-1 | 5 | ||
| Osmium tetroxide (as Os) | 20816-12-0 | 0.002 | ||
| Oxalic acid | 144-62-7 | 1 | ||
| Oxygen difluoride | 7783-41-7 | 0.05 | 0.1 | |
| Ozone | 10028-15-6 | 0.1 | 0.2 | |
| Paraquat, respirable dust | 4685-14-7 1910-42-5 2074-50-2 |
0.5 | X | |
| Parathion | 56-38-2 | 0.1 | X | |
| Particulates
not otherwise regulated (PNOR) (f) Total dust Respirable fraction |
15 |
|||
| PCB; see Chlorodiphenyl (42% and 54% chlorine) | ||||
| Pentaborane | 19624-22-7 | 0.005 | 0.01 | |
| Pentachloronaphthalene | 1321-64-8 | 0.5 | X | |
| Pentachlorophenol | 87-86-5 | 0.5 | X | |
| Pentaerythritol Total dust Respirable fraction |
115-77-5 | 15 5 |
||
| Pentane | 109-66-0 | 1000 | 2950 | |
| 2-Pentanone (Methyl propyl ketone) | 107-87-9 | 200 | 700 | |
| Perchloroethylene (Tetrachloroethylene) | 127-18-4 | 2 | ||
| Perchloromethyl mercaptan | 594-42-3 | 0.1 | 0.8 | |
| Perchloryl fluoride | 7616-94-6 | 3 | 13.5 | |
| Perlite Total dust Respirable fraction |
93763-70-3 | 15 5 |
||
| Petroleum distillates (naphtha)(rubber solvent) | 500 | 2000 | ||
| Phenol | 108-92-2 | 5 | 19 | X |
| p-Phenylene diamine | 106-50-3 | 0.1 | X | |
| Phenyl ether (vapor) | 101-84-8 | 1 | 7 | |
| Phenyl ether-biphenyl mixture (vapor) | 1 | 7 | ||
| Phenylethylene, see Styrene | ||||
| Phenyl glycidyl ether (PGE) | 122-60-1 | 10 | 60 | |
| Phenylhydrazine | 100-63-0 | 5 | 22 | X |
| Phosdrin (Mevinphos®) | 7786-34-7 | 0.1 | X | |
| Phosgene (carbonyl chloride) | 75-44-5 | 0.1 | 0.4 | |
| Phosphine | 7803-51-2 | 0.3 | 0.4 | |
| Phosphoric acid | 7664-38-2 | 1 | ||
| Phosphorus (yellow) | 7723-14-0 | 0.1 | ||
| Phosphorus pentachloride | 10026-13-8 | 1 | ||
| Phosphorus pentasulfide | 1314-80-3 | 1 | ||
| Phosphorus trichloride | 7719-12-2 | 0.5 | 3 | |
| Phthalic anhydride | 85-44-9 | 2 | 12 | |
| Picloram Total dust Respirable fraction |
1918-02-1 | 15 5 |
||
| Picric acid | 88-89-1 | 0.1 | X | |
| Pindone (2-Pivalyl-1, 3-indandione) | 83-26-1 | 0.1 | ||
| Plaster
of paris Total dust Respirable fraction |
26499-65-0 | 15 5 |
||
| Platinum
(as Pt) Metal Soluble Salts |
7440-06-4 | 0.002 |
||
| Portland
cement Total dust Respirable fraction |
65997-15-1 | 15 5 |
||
| Propane | 74-98-6 | 1000 | 1800 | |
| beta-Propriolactone | 57-57-8 | |||
| n-Propyl acetate | 109-60-4 | 200 | 840 | |
| n-Propyl alcohol | 71-23-8 | 200 | 500 | |
| n-Propyl nitrate | 627-13-4 | 25 | 110 | |
| Propylene dichloride | 78-87-5 | 75 | 350 | |
| Propylene imine | 75-55-8 | 2 | 5 | X |
| Propylene oxide | 75-56-9 | 100 | 240 | |
| Propyne, see Methyl acetylene | ||||
| Pyrethrum | 8003-34-7 | 5 | ||
| Pyridine | 110-86-1 | 5 | 15 | |
| Quinone | 106-51-4 | 0.1 | 0.4 | |
| RDX; see Cyclonite | ||||
| Rhodium (as Rh), metal fume and insoluble compounds | 7440-16-6 | 0.1 | ||
| Rhodium (as Rh), soluble compounds | 7440-16-6 | 0.001 | ||
| Ronnel | 299-84-3 | 15 | ||
| Rotenone | 83-79-4 | 5 | ||
| Rouge Total dust Respirable fraction |
15 5 |
|||
| Selenium compounds (as Se) | 7782-49-2 | 0.2 | ||
| Selenium hexafluoride(as Se) | 7783-79-1 | 0.05 | 0.4 | |
| Silica, amorphous, precipitated and gel. | 112926-00-8 | 3 | ||
| Silica, amporphous, diatomaceous earth, containing less than 1% crystalline silica | 61790-53-2 | 3 | ||
| Silica, crystalline cristobalite, respirable dust | 14464-46-1 | 3 | ||
| Silica, crystalline quartz, respirable dust | 14808-60-7 | 3 | ||
| Silica, crystalline tripoli (asquarts), respirable dust | 1317-95-9 | 3 | ||
| Silica, crystalline tridymite, respirable dust | 15468-32-3 | 3 | ||
| Silica, fused, respirable dust | 60676-86-0 | 3 | ||
| Silicates
(less than 1% crystalline silic) Mica (respirable dust) Soapstone, total dust Soapstone, respirable dust Talc (containing asbestos):use asbestos limit Talc (containing no asbestos), respirable dust Tremolite, asbestiform |
12001-26-2 14807-96-6 |
3 3 3 3 3 |
||
| Silicon Total dust Respirable fraction |
7440-21-3 | 15 5 |
||
| Silicon
carbide Total dust Respirable fraction |
409-21-2 | 15 5 |
||
| Silver, metal and soluble compounds (as Ag) | 7440-22-4 | 0.01 | ||
| Soapstone; see Silicates | ||||
| Sodium fluoracetate | 62-74-8 | 0.05 | X | |
| Sodium hydroxide | 1310-73-2 | 2 | ||
| Starch Total dust Respirable fraction |
9005-25-8 | 15 5 |
||
| Stibine | 7803-52-3 | 0.1 | 0.5 | |
| Stoddard solvent | 8052-41-3 | 500 | 2900 | |
| Strychnine | 57-24-9 | 0.15 | ||
| Styrene | 100-42-5 | 2 | ||
| Sucrose Total dust Respirable fraction |
57-50-1 | 15 5 |
||
| Sulfur dioxide | 7446-09-5 | 5 | 13 | |
| Sulfur hexafluoride | 2551-62-4 | 1000 | 6000 | |
| Sulfuric acid | 7664-93-9 | 1 | ||
| Sulfur monochloride | 10025-67-9 | 1 | 6 | |
| Sulfur pentafluoride | 5714-22-7 | 0.025 | 0.25 | |
| Sulfuryl fluoride | 2699-79-8 | 5 | 20 | |
| Systox, see Demeton® | ||||
| 2, 4, 5T (2,4,5-trichlorophenoxyacetic acid) | 93-76-5 | 10 | ||
| Talc; see Silicates | ||||
| Tantalum metal and oxide dust | 7440-25-7 | 5 | ||
| TEDP (Sulfotep) | 3689-24-5 | 0.2 | X | |
| Tellurium and compounds (as Te) | 13494-80-9 | 0.1 | ||
| Tellurium hexafluoride (as Te) | 7783-80-4 | 0.02 | 0.2 | |
| Temephos Total dust Respirable fraction |
3383-96-8 | 15 5 |
||
| TEPP (Tetraethyl pyrophosphaate) | 107-49-3 | 0.05 | X | |
| Terphenyls | 26140-60-3 | C1 | C9 | |
| 1, 1, 1, 2-Tetrachloro-2, 2-difluoroethane | 76-11-9 | 500 | 4170 | |
| 1, 1, 2, 2-Tetrachloro-1, 2-difluoroethane | 76-12-0 | 500 | 4170 | |
| 1, 1, 2, 2-Tetrachloroethane | 79-34-5 | 5 | 35 | X |
| Tetrachloroethylene: see Perchloroethylene | ||||
| Tetrachloromethane, see Carbon tetrachloride | ||||
| Tetrachloronaphthalene | 1335-88-2 | 2 | X | |
| Tetraethyl lead (as Pb) | 78-00-2 | 0.075 | X | |
| Tetrahydrofuran | 109-99-9 | 200 | 590 | |
| Tetramethyl lead (as Pb) | 75-74-1 | 0.075 | X | |
| Tetramethyl succinonitrile | 333-52-6 | 0.5 | 3 | X |
| Tetranitromethane | 509-14-8 | 1 | 8 | |
| Tetryl (2, 4, 6-trinitrophenylmethylnitramine) | 479-45-8 | 1.5 | X | |
| Thallium, soluble compounds (as Tl) | 7440-28-0 | 0.1 | X | |
| 4,4'-Thiobis
(6-tert, Butyl-m-cresol) Total dust Respirable fraction |
96-69-5 | 15 5 |
||
| Thiram | 137-26-8 | 5 | ||
| Tin (inorganic compounds, except oxides) as (Sn) | 7440-31-5 | 2 | ||
| Tin (organic compounds) as (Sn) | 7440-31-5 | 0.1 | ||
| Titanium
dioxide Total dust |
13463-67-7 | 15 | ||
| Toluene | 108-88-3 | 2 | ||
| Toluene-2, 4-diisocyanate (TDI) | 584-84-9 | C0.02 | C0.14 | |
| 0-Toluidine | 95-53-4 | 5 | 22 | X |
| Toxaphene, see Chlorinated camphene | ||||
| Tremolite; see Silicates | ||||
| Tributyl phosphate | 126-73-8 | 5 | ||
| 1, 1, 1-Trichloroethane, seeMethyl chloroform | ||||
| 1, 1, 2-Trichloroethane | 79-00-5 | 10 | 45 | X |
| Trichloroethylene | 79-01-6 | 2 | ||
| Trichloromethane, see Chloroform | ||||
| Trichloronaphthalene | 1321-65-9 | 5 | X | |
| 1, 2, 3-Trichloropropane | 96-18-4 | 50 | 300 | |
| 1, 1, 2-Trichloro 1, 2, 2-trifluoroethane | 76-13-1 | 1000 | 7600 | |
| Triethylamine | 121-44-8 | 25 | 100 | |
| Trifluorobromomethane | 75-63-8 | 1000 | 6100 | |
| 2, 4, 6-Trinitrophenol, see Picric acid | ||||
| 2, 4, 6-Trinitrophenylmethyl nitramine, see Tetryl | ||||
| 2,4,6-Trinitrotoluene (TNT) | 118-96-7 | 1.5 | X | |
| Triorthocresyl phosphate | 78-30-8 | 0.1 | ||
| Triphenyl phosphate | 115-86-6 | 3 | ||
| Turpentine | 8006-64-2 | 100 | 560 | |
| Uranium
(as U) Soluble compounds Insoluble compounds |
7440-61-1 | 0.05 0.05 |
||
Respirable dust (as V2O5) Fume (as V2O5) |
1314-62-1 | C0.5 C0.1 |
||
| Vegetable
oil mist Total dust Respirable fraction |
15 5 |
|||
| Vinyl benzene, see Styrene | ||||
| Vinyl chloride | 75-01-4 | |||
| Vinyl cyanide, see Acrylonitrile | ||||
| Vinyl toluene | 25013-15-4 | 100 | 480 | |
| Warfarin | 81-81-2 | 0.1 | ||
| Xylenes (o-, m-, p-isomers) | 1330-20-7 | 100 | 435 | |
| Xylidine | 1300-73-8 | 5 | 25 | X |
| Yttrium | 7440--65-5 | 1 | ||
| Zinc chloride fume | 7646-85-7 | 1 | ||
| Zinc oxide fume | 1314-13-2 | 5 | ||
| Zinc
oxide Total dust Respirable fraction |
1314-13-4 | 15 5 |
||
| Zinc
stearate Total dust Respirable fraction |
557-05-1 | 15 5 |
||
| Zirconium compounds (as Zr) | 7440-67-7 | 5 | ||
| Footnote 1 The PELs are 8-hour TWAs unless otherwise noted. They are to be determined from breathing zone air samples. | ||||
| A C designation denotes a ceiling limit. They are to be determined from breathing zone air samples. | ||||
| Footnote a Parts of vapor or gas per million parts of contaminated air by volume at 25 degrees Celsius and 760 torr. | ||||
| Footnote b Milligrams of material/substance per cubic meter of air. When entry is in this column only, the value is exact; when listed with a ppm entry, it is approximate. | ||||
| Footnote c The CAS number is for information only. Enforcement is based on the material/substance name. For an entry covering more than one metal compound measured as the metal, the CAS number for the metal is given not CAS numbers for the individual compounds. | ||||
| Footnote d The benzene section applies to all occupational exposures to benzine except in some circumstances the distribution and sale of fuels, sealed containers and pipelines, coke production, oil and gas drilling and production, natural gas processing, and the percentage exclusion for liquid mixtures; for the excepted subsegments, the benzine limits in table 300.05.c apply. | ||||
| Footnote e This 8-hour TWA applies to respirable dust as measured by a vertical elutriator cotton dust sampler or equivalent instrument. The time weighted average applies to the cotton waste processing operation of waste recycling (sorting, blending, cleaning, and willowing) and garnetting. | ||||
| Footnote f All inert or nuisance dusts, whether mineral, inorganic, or organic, not listed specifically by material/substance name are covered by the Particulates Not OtherwiseRegulated (PNOR) limit which is the same as the inert or nuisance dust limit of table 300.05-C. | ||||
| Footnote 2 See table 300.05-B. | ||||
| Footnote 3 See table 300.05-C. | ||||
| Footnote 4 Varies with compound. | ||||
(7-1-97)
d. An employee's exposure to any material listed in Table 300.05-B of this section shall be limited in accordance with the requirements of the following subsection. (7-1-97)
e. An employee's exposure to any material listed in Table 300.05-B in any eight (8) hour work day of a forty (40) hour work week shall not exceed the eight (8) hour time weighted average limit given for that material in table 300.05-B. (7-1-97)
f. An employee's exposure to a material listed in Table 300.05-B, shall not be exceed at any time during an eight (8) hour shift the acceptable ceiling 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 eight (8) hour shift". EXAMPLE. During an eight (8) hour work shift, an employee may be exposed to a concentration of substance A (with a ten (10) ppm TWA, twenty-five (25) ppm ceiling, and fifty (50) ppm peak) above twenty-five (25) ppm (but never above fifty (50) ppm.) only for a maximum period of ten (10) minutes. Such exposure must be compensated by exposures to concentrations less than ten (10) ppm. so that the cumulative exposure for the entire eight (8) hour work shift does not exceed a weighted average of ten (10) ppm. (7-1-97)
| TABLE 300.05-B | ||||
| . | Acceptable
maximum peak above
the acceptable ceiling concentration for an 8-hour shift |
|||
| Material | 8-hour time weighted average | Acceptable ceiling concentration | Concentration | Maximum duration |
| Benzene (Z37.40-1969)a | 10 p.p.m. | 25 p.p.m | 50 p.p.m. | 10 minutes |
| Beryllium and beryllium compounds (Z37.29-1970) | 2 ug/M35 | ug/M325 | ug/M3 | 30 minutes |
| Cadmium fume (Z37.5-1970) | 0.1 mg/M3 | 0.3 mg/M3 | ............ | ............ |
| Cadmium dust (Z37.5-1970) | 0.2 mg/M3 | 0.6 mg/M3 | ............ | ............ |
| Carbon disulfide (Z37.3-1968) | 20 p.p.m. | 30 p.p.m. | 100 p.p.m. | 30 minutes |
| Carbon tetrachloride(Z37.17-1967) | 10 p.p.m. | 25 p.p.m. | 200 p.p.m. | 5
minutes in any 4 hours |
| Ethylene dibromide(Z37.31-1970) | 20 p.p.m. | 30 p.p.m. | 50 p.p.m. | 5 minutes |
| Ethylene
dichloride (Z37.21-1969) |
50 p.p.m. | 100 p.p.m. | 200 p.p.m. | 5
minutes in any 3 hours |
| Formaldehyde (Z37.16-1967) | 3 p.p.m. | 5 p.p.m. | 10 p.p.m. | 30 minutes |
| Hydrogen Fluoride (Z37.26-1969) | 3 p.p.m. | ............ | ............ | ............ |
| Fluoride as dust (Z37.28-1969) | 2.5 mg/M3 | ............ | ............ | ............ |
| Lead
and its inorganic compounds (Z37.11-1969) |
0.2 mg/M3 | ............ | ............ | ............ |
| Methyl chloride (Z37.18-1969) | 100 p.p.m. | 200 p.p.m. | 300 p.p.m. | 5 minutes in any 3 hours |
| Methylene
chloride (Z37.23-1969) |
500 p.p.m. | 1,000 p.p.m. | 2,000 p.p.m. | 5 minutes in any 2 hours |
| Organo (alkyl) mercury | 0.01 mg/M3 | 0.04 mg/M3 | ............ | ............ |
| Styrene (Z37.15-1969) | 100 p.p.m. | 200 p.p.m. | 600 p.p.m. | 5 minutes in any 3 hours |
| Trichloroethylene (Z37.19-1967) |
100 p.p.m. | 200 p.p.m. | 300 p.p.m. | 5 minutes in any 2 hours |
| Tetrachloroethylene (Z37.22-1967) |
100 p.p.m. | 200 p.p.m. | 300 p.p.m. | 5 minutes in any 3 hours |
| Toluene (Z37.12-1967) | 200 p.p.m. | 300 p.p.m. | 500 p.p.m. | 10 minutes |
| Hydrogen
sulfide (Z37.2-1966) |
............ | 20 p.p.m. | 50 p.p.m. | 10 minutes once only if no other measurable exposure occurs |
| Mercury (Z37.8-1971) | ............ | 1 mg/10M3 | ............ | ............ |
| Chromic
acid and Chromates (Z37.7-1971) |
............ | 1 mg/10M3 | ............ | ............ |
| Footnote a This section applies to the segments exempt from tie 1-ppm 8-hour TWA and 5-ppm STEL of the benzene section. | ||||
| Footnote b This standard applies to any operations or sectors for which the cadmium section is not otherwise in effect. | ||||
g. An employee's exposure to any material listed in Table 300.05-C of this section, in any eight (8) hour work shift of a forty (40) hour work week, shall not exceed the eight (8) hour time weighted average limit given for that material in table 300.05-C. (7-1-97)
| TABLE 300.05 C | ||
| MINERAL DUST | ||
| Substance | eMppcf | mg/M3 |
| Silca: Crystalline: Quartz (respirable) |
f250
%SiO2 + 5 |
m10
mg/M3
%SiO2 + 2 |
| Quartz (total dust) | ........ | 30
mg/M3
%S2O2 + 2 |
| Cristobalite:
Use 1/2 the value calculated from the count or mass formulae for quartz. Tridymate: Use 1/2 the value calculated from the formulae for quartz. Amorphous, including natural diatomaceous earth |
|
%SiO2 |
| Silicates
(less than 1% crystalline silica): Mica Soapstone Talc (non-asbestos-form) Talc (fibrous). Use asbestos limit Tremolite (see talc, fibrous) Portland cement Graphite (natural) Coal dust (respirable fraction less than 5% SiOs) For more than 5% SiO2 | 20 20 n20 .... .... 50 15 .... .... | |
2.4mg/M3 %SiO2 + 2 |
||
| Inert
or Nuisance Dust: Respirable fraction 15 Total dust |
15 50 |
5 mg/M3 15 mg/M3 |
| NOTE: Conversion factors-mppcf x 35.3 = million particles per cubic meter = particles per cc. | ||
| Footnote a Millions of particles per cubic foot of air, based on impinger samples counted by light-field techniques. | ||
| Footnote b 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. | ||
| Footnote c Containing less than 1% quartz; if 1% quartz or more, use quartz limit. | ||
| Footnote d All inert or nuisance dusts, whether mineral, inorganic, or organic, not listed specifically by material/substance name are covered by the Particulates Not Otherwise Regulated (PNOR) limit which is the same as the inert or nuisance dust limit of table 300.05-A. | ||
| Footnote e Both concentration and percent quarts 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 |
| 3.5 | 50 |
| 5.0 | 25 |
| 10 | 0 |
| The measurements under this note refer to the use of an AEC instrument. The respirable fraction of coal dust is determined with a MRE; the figure corresponding to that of 2.5 Mg/M3 in the table for coal dust is 4.5 Mg/M3. | |
(7-1-97)
06. Computation Formula: (7-1-97)
a. The cumulative exposure for an eight (8) hour work shift shall be computed as follows: (E=CaTa + CbTb . . . CnTn) ÷ 8. Where: E is the equivalent exposure for the working shift; C is the concentration during any period of time T where the concentration remains constant; and T is the duration in hours of the exposure at the concentration C. The value of E shall not exceed the eight (8) hour limit for time weighted averages in Table 300.05-A, 300.05-B and 300.05-C for the material involved. (7-1-97)
b. To illustrate the formula prescribed in this subsection, note that isoamyl acetate has an eight (8) hour weighted average limit of one-hundred (100) ppm Assume that an employee is subject to the following exposure: Two (2) hours exposure at one-hundred-fifty (150) ppm; Two (2) hours exposure at seventy-five (75) ppm; Four (4) hours exposure at fifty (50) ppm. Substituting this information in the formula we have: (2x150+2x75+4x50) ÷ 8 = 81.25-ppm. Since eighty-one-point-twenty-five (81.25) ppm is less than one-hundred (100) ppm. the eight (8) hour time weighted average limit, the exposure is acceptable. (7-1-97)
c. In case of a mixture of air contaminates, an employer shall compute the equivalent exposure as follows: Em = (C1-L1+C2-L2) + .... (Cn-Ln). Where Em is the equivalent exposure for the mixture, C is the concentration of a particular contaminant, L is the exposure limit for that contaminant, from Table 300.05-A, 300.05-B, 300.05-C. The value of Em shall not exceed units. (7-1-97)
d. To illustrate the formula prescribed in sub-section 300.06.c of this section, consider the following exposures:
| Material | Actual Concentration of 8-hour exposure | 8-hour time weighted average exposure limit |
| Acetone(Table 300.05-A) | 500-ppm | 1,000-ppm |
| 2-Butanone(Table 300.05-A) | 45-ppm | 200-ppm |
| Toluene(Table 300.05-B) | 40-ppm | 200-ppm |
| Since Em is less than unity, the exposure combination is within acceptable limits. | ||
(7-1-97)
e. To achieve compliance with subsections 300.05.a. through 300.05.g., of this section, administrative or engineering controls must first be determined and implemented 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 contaminant within the limits prescribed in this section. Any equipment and/or technical measures used for this purpose must be approved for each particular use by a competent industrial hygienist or other technically qualified person. Whenever respirators are used, their use shall comply with sub-section 052.06 of this standard. (7-1-97)
07. Disposal of Hazardous and Toxic Waste Material: (7-1-97)
a.
Hazardous and toxic material waist
shall be disposed of in a manner and
location approved by: the local
District Health District; Idaho
Division of Environmental Quality;
Federal Environmental Protection
Agency (7-1-97)