Document 9334BgBQVwYgK1pGn1Q8E4geR

INTER-OFFICE CORRESPONDENCE _] Date: December II, 1989 To: Distribution From: Loren Anderson Location: General Office Subject: IPEL Update Attached is an updated IPEL table. The only change from the last update is the addition of a STEL for Methylene bis(4-cyclohexylisocyanate (HYLENE) DISTRIBUTION Steve Hanna, Barberton Denis Sauve, Beauharnois Lisa Detwiler, Stockertown Steve McIntosh, Mazer-Gurnee Jon Shepherd, LaPorte Allison Power, Monroeville Mark Wood, Lake Charles Bob Minutella, Mazer-Folcroft Ron Williams, Lake Charles Ken Furst, Santek John Spencer, Natrium Lynn Kuryla, Monoroeville t-A. /% ^ 's shrunk- `-t-tyij- -- PA'I *r- SL 091897 INTERNAL PERMISSIBLE EXPOSURE LIMITS (IPELS) 12/07/85 CHEMICAL NAME ACETALDEHYDE ACETIC ACID C ACETIC ANHYDRIDE ACETONE ACETONITRILE ACROLEIN S ACRYLIC ACID ACRYLONITRILE ACT I NOLITE S ALLYL ALCOHOL ALLYL CHLORIDE ALLYL CHLOROFORMATE ALUMINUM METAL AND OXIDE ALUMINUM SOLUBLE SALTS AMMONIA ANILINE ANTHOPHYLLITE ANTIMONY OXIDE AS SB ARSENIC ASBESTOS AMOSITE ASBESTOS CHRYSOTILE ASBESTOS CRQCIDOLITE ASPHALT FUMES (PETROLEUM) B-ETHOXY PROPIONITRILE BARIUM SOLUBLE BENZENE BENZYL AMINE BENZYL CHLORIDE BERYLLIUM BIPHENYL BIS-PHENOL A BORON TRICHLORIDE BORON TRIFLUORIDE BROMINE S 3ROMOFORM BUTANE S BUTYL CELLOSOLVE BUTYL CHLOROFORMATE CADMIUM DUST C CADMIUM FUME CALCIUM CARBONATE CALCIUM HYDROXIDE CALCIUM HYPOCHLORITE DUST S CARBON BISULFIDE CARBON BLACK CARBON DIOXIDE CARBON MONOXIDE S CARBON TETRACHLOR CODE TWA SOURCE STEL SOURCE UNITS NOTE ACALD ACETIC ACANH ACETON ACCN ACRO ACRYLC AN ACT AL-ALC ALCLOR ACF AL ALSALT NH3 ANILIN ANT SB203 AS ASBAMO AS8CRY ASBCRO ASFALT EPE BA-SOL BENZ BENZAM BENZCL BE BIPHEN BPHENA BCL3 BOTRIF BR2 CHBR3 BUT-N BCELL BCF CADDUS CADFUM CAC03 CA0H2 CAHYPO CS2 CARBLK C02 CO CCL4 100 (OSHA) 10 (OSHA) N/A ( ) 750 (OSHA) 40 (OSHA) 0.1 (OSHA) 10 (OSHA) 2 (OSHA) 0.2 (OSHA) 2 (OSHA) 1 (OSHA) N/A ( ) 10 (TLV ) 2 (OSHA) 25 (TLV ) 2 (OSHA) 0.2 (OSHA) O.S (OSHA) 0.01 (OSHA) 0.2 (OSHA) 0.2 (OSHA) 0.2 (OSHA) 5 (TLV ) 5 (IPEL) 0.5 (OSHA) 1 (TLV ) N/A ( ) 1 (OSHA) 0.002 (OSHA) 0.2 (OSHA) N/A ( ) N/A ( ) N/A ( ) 0. I (OSHA) O.S (OSHA) 300 (OSHA) 25 ( TLV ) N/A ( ) 0.05 ( TLV > N/A ( ) 10 (TLV ) 5 (OSHA) 1 (IPEL) 4 (OSHA) 3.5 (OSHA) 5000 (TLV ) SO (TLV ) 2 (OSHA) 150 (OSHA) 15 (TLV ) 5 (OSHA) 1000 (OSHA) so (OSHA) 0.3 (OSHA) N/A ( ) 10 (OSHA) 1 (OSHA) 4 (OSHA) 2 (OSHA) N/A ( ) N/A ( ) N/A ( ) 35 (OSHA) N/A ( ) 1 (OSHA) 0.75 (IPEL) N/A ( ) 1 (OSHA) 1 (OSHA) 1 (OSHA) N/A ( ) 10 ( IPEL) N/A ( ) 5 (TLV ) N/A ( ) N/A ( ) 0.005 (OSHA) N/A ( ) N/A ( ) N/A ( ) 1 (TLV ) 0.3 (TLV ) N/A ( ) N/A ( ) N/A (TLV ) N/A ( ) 0.2 (TLV ) 0.05 (TLV ) N/A ( ) N/A ( ) 2 ( IPEL) 12 (OSHA) N/A ( ) 30000 (OSHA) 400 (TLV ) N/A ( ) PPM PPM PPM PPM PPM PPM PPM PPM FML PPM PPM PPM MCM MCM PPM PPM FML MCM MCM FML FML FML MCM PPM MCM PPM PPM PPM MCM PPM MCM PPM PPM PPM PPM PPM PPM PPM MCM MCM MCM MCM MCM PPM MCM PPM PPM PPM fc A A A SL 091898 INTERNAL PERMISSIBLE EXPOSURE LIMITS (IPELS) 12/07/M CHEMICAL NAME CODE TWA SOURCE STEL SOURCE UNIT! CHLORINE c CHLORACETALDEHYDE s CHLOROANILINE chloroform CHLOROPIVALOYL CHLORIDE CHLOR OPR OP HAM CHROMIUM OXIDE VI CIS-1,2-DICHLOROETHYLENE COAL DUST RESP GT 5X QUAR COAL DUST RESPIRABLE COAL TAR PITCH VOL.-8ZSOL COPPER DUST AND MISTS COPPER FUMES s CRESOL CRYSTAL-SILICA QTZ.RESP. CRYSTAL-SILICA QTZ.TOTAL CYCLOHEXANE s CYCLOHEXANOL s CYCLOHEXANONE CYCLOHEXENE CYCLOHEXENE OXIDE CYCLOHEXYL AMINE D--LIMONENE DI--N--PROPYL AMINE DIALLYL CARBONATE DIBUTYL PHTHALATE c DICHLOROACETYLENE DICHLOROPIVALOYL CHLORIDE DIETHANOLAMINE DIETHYL SULFATE DIETHYL.GLYC.CHLORFORMATE DIETHYLDISULFIDE DIETHYLN.GLYCO.M-METHYL-E diethyltriamine DIISOBUTYL KETONE DIISOBUTYLAMINE s DIISOPROPYLAMINE DIMETHOXYMETHANE s DIMETHYLFORMAMIDE DIMETHYLPHTHALATE s DIOXANE s ENDRIN s EPICHLOROHYDRIN EPTC ETHANOLAMINE ETHYL ALCOHOL s ETHYL CELLOSOLVE CL2 CLAALD CLANLM CHCL3 CPC CIPC CR03 CIS COALRQ COAL-R CTPV CU-DM CU-FUM CRESOL SI02--R SI02-T CYHX CYLHEX CYLNON CYHXE CHO CYHXAM LI MON DNPA DAC DBUPHT DCA DCPC DIETAM DES DECF DEDS DEGE DETRAM DIBK DIBA DIPR NH DMXME DMFA DMEPHT DIOXAN ENDRIN EPI EPTC ETHAMN ETOH ECELL O.S (OSHA) N/A ( ) 2 (TLV ) 2 (OSHA) 0.2 C IPEL) 1 (IPEL) 0.05 (TLV ) 10 (IPEL) 0.1 (OSHA) 2 (OSHA) 0.2 (TLV ) 1 (OSHA) 0.1 (OSHA) 5 (OSHA) 0.1 (OSHA) N/A ( ) 300 (OSHA) 50 (OSHA) 25 (OSHA) 300 (TLV ) 10 (IPEL) 10 (OSHA) N/A ( ) N/A ( ) N/A ( ) 5 (OSHA) N/A ( ) N/A ( ) 3 (OSHA) 0.1 (IPEL) 1 (IPEL) N/A ( ) 25 (IPEL) 1 (OSHA) 25 (OSHA) N/A ( ) 5 (OSHA) 1000 (OSHA) 10 (OSHA) 5 (OSHA) 25 (OSHA) 0.1 (OSHA) 2 (OSHA) N/A ( > 3 (OSHA) 1000 (OSHA) 5 ( iPEL) 1 (OSHA) 1 (TLV ) N/A ( ) N/A ( ) 1 (IPEL) 3 (IPEL) N/A ( ) 25 (IPEL) N/A ( ) N/A ( ) 0 .6 (IPEL) N/A ( ) 0 .3 (IPEL) N/A ( ) N/A ( > N/A ( > N/A ( ) 75 (IPEL) 75 (IPEL) N/A ( ) 20 (IPEL) N/A ( ) N/A ( ) N/A ( ) N/A ( ) N/A ( ) 0 . 1 (TLV ) N/A ( ) N/A ( ) N/A (IPEL) 5 (IPEL) N/A ( ) SO (IPEL) N/A ( ) N/A ( ) N/A ( ) 10 (IPEL) N/A ( ) N/A ( > N/A ( > N/A ( ) N/A ( ) N/A ( ) N/A ( > 6 (OSHA) N/A ( ) 10 (IPEL) PPM PPM PPM PPM PPM PPM MCM PPM MCM MCM MCM MCM MCM PPM MCM MCM PPM PPM PPM PPM PPM PPM PPM PPM PPM MCM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM MCM PPM MCM PPM PPM PPM PPM PPM C c SL 091899 a ! < f< i i ( ff( f t r( INTERNAL PERMISSIBLE EXPOSURE LIMITS (IPELS) 12/07/89 CHEMICAL NAME CODE TWA SOURCE STEL SOURCE UNITS NOTE ETHYL CHLORIDE ETHYL CHLOROFORMATE ETHYL CHLOROPROP IONATE ETHYL CHLORQTHIOFORMATE ETHYL ETHER ETHYL MERCAPTAN ETHYL PROPIONATE s ETHYLENE DIBROMIDE ETHYLENE DICHLORIDE ETHYLENE GLYCOL PARTIC c ETHYLENE GLYCOL VAPOR ETHYLENE OXIDE s ETHYLGLYCOL ETHYL ETH ACT ETHYLHEXYL ALCOHOL ETHYLHEXYLPEROXYDICARBON. FLUORIDE AS F FORMALDEHYDE s FURFURAL ALCOHOL GLYCIDOL (EPOXYPROPANOL) GRAPHITE RESPIRABLE HEXACHLOROETHANE HEXAMETHYLENEDIISOCYANATE HYDROCARBONS c HYDROGEN BROMIDE c HYDROGEN CHLORIDE (ACID) HYDROGEN FLUORIDE HYDROGEN PEROXIDE HYDROGEN SULFIDE HYDROQUINONE c IODINE IRON OXIDE FUME ISOBUTANOL ISOBUTYLCHLOROFORMATE ISOPHORONE ISOPHORONE DIISOCYANATE ISOPROPYL ACETATE ISOPROPYL ALCOHOL ISOPROPYL CARBANILATE ISOPROPYL CHLOROFORMATE ISOPROPYL PERCARBONATE s LEAD-ORGANIC LEAD-PARTICULATE LIQUIFIED PETROLEUM GAS M-DICHLOROBENZENE s M-ETHYLGLYCOL M-METHYL ET MALEIC ANHYDIRDE MANGANESE FUME EC ECF ECP ECTF ETHER ETSH ETPROP EDB EDC EGP EGV EO EGEEA 2EHOH EHPDC FLORID FORMAL FURALC GLYCDL GRAPHT HEX HDI HC HBR HCL HF H202 H2S HQ 12 FEOXFU IBL IBCF ISOPHO IPDI IPRACT ISOALC IPC IPCF IPP PBORG PBPART LPO MDCB MEGE MALANH MANGFU 200 2 N/A N/A 400 O.S N/A 0.3 1 10 N/A 1 5 N/A 1 2.5 1 10 5 2.5 1 0.005 N/A N/A N/A 3 I 10 2 N/A S 50 N/A 4 0.005 250 400 10 1 0.1 0.075 0.05 1000 N/A 2 0.25 1 < IPEL) (IPEL) <) () (OSHA) (OSHA) C) (IPEL) (OSHA) (TLV ) (OSHA) (OSHA) (IPEL) () (IPEL) (OSHA) (OSHA) (OSHA) (IPEL) (TLV ) (TLV ) (TLV ) () () () (OSHA) (OSHA) (OSHA) (OSHA) () (TLV ) (OSHA) () (OSHA) (OSHA) (OSHA) (OSHA) ( IPEL) ( IPEL) ( IPEL) (OSHA) (OSHA) (OSHA) <) (IPEL) (OSHA) (TLV ) 375 (IPEL) 5 (IPEL) N/A ( ) N/A ( ) 500 (OSHA) N/A ( ) N/A ( ) 2.5 (IPEL) 2 (OSHA) N/A ( ) 50 (TLV ) 5 (OSHA) 10 (IPEL) N/A ( > 3 (IPEL) N/A ( ) 2 (OSHA) 15 (OSHA) 10 (IPEL) N/A ( > N/A ( ) N/A ( ) N/A ( ) 3 (OSHA) 5 (OSHA) N/A ( ) N/A ( ) 15 (OSHA) N/A ( ) 0.1 (TLV ) N/A ( ) N/A ( ) N/A ( ) N/A ( ) 0.02 (OSHA) 310 (TLV ) 500 (OSHA) 25 (IPEL) 5 (IPEL) 0.3 (IPEL) 0.3 (IPEL) N/A ( ) N/A ( ) N/A ( ) 5 (IPEL) N/A ( ) 3 (TLV ) PPM PPM PPM PPM PPM PPM PPM PPM PPM MCM PPM PPM PPM PPM PPM MCM PPM PPM PPM MCM PPM PPM PPM PPM PPM PPM PPM PPM MCM PPM MCM PPM PPM PPM PPM PPM PPM PPM PPM PPM MCM MCM PPM PPM PPM PPM MCM B A A A SL 091900 (( r INTERNAL PERMISSIBLE EXPOSURE LIMITS (IPELS) 12/07/89 CHEMICAL NAME CODE TMA SOURCE STEL SOURCE UNIT! s MERCURY s METHANOL METHBISCYCLOHEXISOCYANATE METHY B PHENYL ISOCYANATE s METHYL ACRYLATE METHYL CHLORIDE METHYL CHLOROFORM METHYL CHLOROFORMATE METHYL CYCLOHEXANE METHYL ETHYL KETONE METHYL ISOBU KETONE s METHYL ISOCYANATE METHYL MERCAPTAN s METHYLCYCLOPN-D-MN-TRICBL METHYLENE CHLORIDE MOLYBDENUM MONO-CHLOROBENZENE MONOCHLOROACETYLENE s MORPHOLINE s,c N-BUTANOL N-HEPTANE N-HEXANE s N-PROPANOL N-PROPYL CHLOROFORMATE NICKEL METAL NITRIC ACID NITRIC OXIDE NITROGEN DIOXIDE NITROMETHANE NOISE NORM.BUTYL ACETATE NUISANCE DUST NUISANCE DUST-RESPIRABLE OIL MIST c ORTHO-DICHLORBENZENE OXALIC ACID OZONE P_XYLENE DIISOCYANATE PALLADIUM PARA-DICHLOROBENZENE s PENTACHLOROPHENOL PERCHLOROETHYLENE s PHENOL PHENYL CHLOROFORMATE PHOSGENE PHOSPHORIC ACID PIVALOYL CHLORIDE HG METHOL HYLENE MDI METACR MECL MC MCF MECYHX MEK MI BK MI MESH MMT-MN METHCL MO MCBN MCA MORPH N-BUOH NHPTAN HX-N NPL NPCF NICKEL HN03 NO N02 NITMET NOISE NBA DUS T NU DUSTNR OILMST ODCB OXACD 03 PXDI PALLAD PDCB PCP PER PHENOL PCF PHOSGE HP 03 PVCL 0.05 (OSHA) 200 (OSHA) o.oos < TLV ) O.OOS CTLV ) 10 (OSHA) 50 (OSHA) 350 (TLV ) I (IPEL) 400 (OSHA) 200 (OSHA) 50 (OSHA) 0.02 (OSHA) 0.5 (OSHA) 0.1 (IPEL) 50 (TLV ) 5 (OSHA) 75 (OSHA) N/A ( ) 20 (OSHA) N/A (OSHA) 400 (TLV ) 50 (TLV ) 200 (OSHA) 1 (IPEL) 1 (OSHA) 2 (OSHA) 25 (OSHA) N/A ( ) 100 (OSHA) 90 (OSHA) 150 (OSHA) 10 (TLV ) 5 (TLV ) 5 (OSHA) N/A (OSHA) 1 (OSHA) N/A ( ) N/A ( ) 0.1 (IPEL) 75 (OSHA) 0.5 (OSHA) 25 (OSHA) 5 (OSHA) N/A ( ) 0.1 (OSHA) 1 (TLV ) 0.2 (IPEL) N/A ( ) 250 (OSHA) 0.01 (OSHA) 0.02 (OSHA) N/A ( ) 100 (OSHA) 450 (TLV ) 2 (IPEL) N/A ( ) 250 (IPEL) 75 (OSHA) N/A ( > N/A ( ) 0.3 (IPEL) N/A ( ) N/A ( ,) 150 (IPEL) N/A ( ) 30 (OSHA) 50 (TLV ) 500 (TLV ) N/A ( ) 250 (OSHA) 5 (IPEL) N/A ( ) 4 (OSHA) N/A ( ) 1 (OSHA) N/A ( ) N/A ( ) 200 (OSHA) N/A ( ) N/A ( ) 10 (TLV ) 50 (TLV ) 2 (OSHA) 0.1 (TLV ) N/A ( ) 0.3 (IPEL) 100 (IPEL) N/A ( ) 100 (IPEL) N/A ( ) N/A ( ) 0.3 (IPEL) 3 (TLV ) 1 (IPEL) MCM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM MCM PPM PPM PPM PPM PPM PPM PPM PPM MCM PPM PPM PPM PPM OTH PPM MCM MCM MCM PPM MCM PPM PPM MCM PPM MCM PPM PPM PPM PPM MCM PPM SL 091901 rrrffffffffff INTERNAL PERMISSIBLE EXPOSURE LIMITS < IPELS) 12/07/89 CHEMICAL NAME CODE TWA SOURCE STEL SOURCE UNIT PLATINUM S POLYCHLOR BIPHENYLS 42XCL S POLYCHLOR BIPHENYLS S4*ZCL c POTASSIUM HYDROXIDE POTASSIUM HYDROXIDE PPG 1013 s PROPARGL ALCOHOL PROPYLENE OXIDE PROPYLENE TRICHLORIDE PYRIDINE RUTHENIUM SEC-BUTYL ALCOHOL SEC-BUTYL CHLOROFORMATE SILICA--CRISTOBALITE--RESP SILICON CARBIDE SILVER METAL SOLUBLE CMPD c SODIUM AZIDE c SODIUM HYDROXIDE STODDARD SOLVENT STYRENE MONOMER SUCROSE SULFUR CHLORIDE SULFUR DIOXIDE SULFURIC ACID s SYM-TETRACHLOROETHANE SYN PRECIP SILICA--RESP SYN PRECIP SILICA-TOTAL TANTALUM c TERPHENYLS TERT-BUTYL ALCOHOL TETRAHYDROFURAN TIN-INORG.CMPS.-NOT OXIDE TITANIUM DIOXIDE TOLUENE TOLUENE 2,4 DIISOCYANATE TOTAL HYDROCARBONS TOTAL OXIDANTS AS OZONE TRANS--1,2DICHLOROETHYLENE TREMOLITE TRICHLOROETHYLENE c TRICHLOROFLUOROMETHANE TRIORTHOCRESYL PHOSPHATE TUNGSTEN INSOLUBLE TURPENTINE UNSYM-TETRACHLOROETHANE VINYL ACETATE VINYL BROMIDE PT PCS--42 FC8-54 KOH KOH 1013 PRGOH PO PTCL2 PYRDIN RUTH BU2ALC SBCF SI02--C SIC AG NAN3 NAOH STDSOL STYREN SUCROS S2CL2 S02 H2S04 SYM SPS-R AM-SIL TA TERPH 3UOH-T THF TIN-IN T 102 TOLUEN TDI TOT-HC TOT-OX TRANS TRE TRI FREON TOCP TUNG TURPEN UNSYM V-ACET VBR 1 COSHA) 1 CTLV ) 0.5 ( TLV ) N/A COSHA) N/A ( ) N/A < ) 1 COSHA) 20 COSHA) 5 CIPEL) 5 COSHA) N/A C ) 100 COSHA) N/A C ) 0.05 CTLV ) 10 COSHA) 0.01 COSHA) N/A COSHA) N/A COSHA) 100 COSHA) 50 COSHA) 10 CTLV ) N/A C ) 2 COSHA) 1 COSHA) 1 COSHA) 5 CIPEL) 6 COSHA) 5 CTLV ) N/A CO ) 100 COSHA) 200 COSHA) 2 COSHA) 10 COSHA) 100 COSHA) 0.005 COSHA) N/A C ) 0.1 CIPEL) 10 CIPEL) 0.2 COSHA) SO COSHA) N/A C ) 0.1 COSHA) 5 COSHA) 100 COSHA) 5 CIPEL) 10 COSHA) 1 CIPEL) N/A C ) N/A C ) N/A C ) 2 CTLV ) 2 COSHA) N/A C ) N/A C ) N/A C ) 10 C IPEL) N/A ( ) N/A C ) 150 CTLV ) N/A C ) N/A C ) N/A C ) N/A C ) 0.1 CTLV ) 2 CTLV ) N/A C ) 100 COSHA) N/A < ) N/A C ) 5 COSHA) 2 CIPEL) N/A C ) N/A C ) N/A C ) N/A C ) 0.5 CHA ) 150 COSHA) 250 COSHA) N/A C ) N/A C ) 150 COSHA) 0.02 COSHA) N/A C ) 0.3 CIPEL) 25 CIPEL) 1 COSHA) 200 COSHA) 1000 CTLV ) N/A C ) 10 COSHA) N/A C ) 10 CIPEL) 20 COSHA) 5 CIPEL) MCM MCM MCM MCM MCM UCM PPM PPM PPM PPM MCM PPM PPM MCM MCM MCM PPM MCM PPM PPM MCM PPM PPM MCM PPM MCM MCM MCM PPM PPM PPM MCM MCM PPM PPM PPM PPM PPM FML PPM PPM MCM MCM PPM PPM PPM PPM SL 091902 r r ( r rr rrrrrrr r c INTERNAL PERMISSIBLE EXPOSURE LIMITS (IPELS) 12/07/89 CHEMICAL NAME CODE TWA SOURCE STEL SOURCE UNITS NOTE VINYL CHLORIDE VINYL TOLUENE VINYLIDENE CHLORIDE WELDING FUME-TOTAL WELDING FUME-TOTAL X-RADIATION XYLENE ZINC CHLORIDE FUME ZINC OXIDE FUME ZINC STEARATE 1,1 DICHLOROETHANE 1,1 DIMETHYLHYDRAZINE 1,1,2 TRICHLOROETHANE 1,2-BUTYLENE OXIDE 1,2,3-TRICHLOROBENZENE 1,2,4-TRICHLOROBENZENE 1,3-BUTADIENE 1,3-DIOXOLANE 2--ETHYLHEXYLCHLOR OFORMATE 2--NITROPROPANE 2,6 DITERT8UTYL-P--ORESOL VCM VTOL VDC WELDFU WELDFU X-RAYS XYLENE ZNCLFU ZNOF ZNSTER DCE DMEHYZ TCE BLM 123TC8 TCB BUDIEN DOL EHCF 2-NPRO DTBPC 1 (OSHA) SO (TLV > I (OSHA1 5 (OSHA) 5 (OSHA) VAR (TLV ) 100 (OSHA) 1 (OSHA) S (OSHA) 10 (OSHA) 10 ( IPEL) 0.5 (OSHA) S ( IPEL) 5 ( IPEL) N/A ( ) N/A ( ) 10 (TLV ) 25 ( IPEL) 1 ( IPEL) 10 (OSHA) 10 (TLV ) 5 (OSHA) 100 (TLV ) 10 ( IPEL) 10 (IPEL) 10 (TLV ) VAR (TLV ) 150 (OSHA) 2 (OSHA) 10 (OSHA) 20 (TLV ) 25 (IPEL) N/A ( ) 10 (IPEL) 10 (IPEL) N/A ( ) 5 (OSHA) N/A (TLV ) 50 (IPEL) 5 (IPEL) N/A ( ) N/A ( ) PPM PPM PPM MCM MCM OTH PPM MCM MCM MCM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM MCM SL 091903