conoco Faxed 1/24/83 Interoffice Communication to : R.

This principle may lead to the categorization of devices which would facilitate the selection of appropriate tests.

COMMENTS ON EPA TOXICOLOGICAL PROFILE ON VCM GENERAL As described in Section 2.3.1., SARA directs EPA to prepare toxicologyprofiles that will include an examination of the data, a determination of adequacy, and, where appropriate, an identification of needed toxicology testing.

.-- A Partial List of 65 Chemicals Designated as ^Priority pollutants Arsenic Benzene Beryllium Cadmium Carbon tetrachloride Chlordane Chlorinated naphthalenes Chloroform 2-chlorophenol Dichlorobenzenes 2,4-Dimethylphenol 2,3,7,8-Tetrachlorodibenzo-p-dioxin Fluoranthene Heptachlor Hexachlorobutadiene Hexachlorocyclopentadiene Lead N i trosamines Pentachlorophenol Selenium Silver Tetrachloroethylene Thai1ium Trichloroethylene Vinyl Chloride UJI1 j e5tl 17 - CMA 012620 Table 6. -- Chemicals Having Substantia Carcinogenicity; CAG List vidence of 2Acetylaminofluorene Acrylonitrile iCAC.

What is leaded isi new ilong-tierm energy strategies.

Attach substantiation form to this submission.) 1.2 CAS # 0 0 007 5 1 "1 6 Is 1 "1 0 (U* leading zeros if CAS number does not All space provided.)

TX TINE* HMCOO2I444 3 Contents Section 3 \ir sampling and analysis Ur sampling sample analysis The significance of ampling/analytical rrors References 7lb ~tluH appendix 1 Sampling and 70 nalytical procedures appendix 2 Additional discussion on <33 j ure assessment strategies with pecial refence to recent developments n this field Section 4 Occupational exposure limits for airborne toxic substances Introductory remarks Risk evaluation on the bases of limit values Overview of different SS' occupational exposure limits (OELs) Maximum allowable 100 concentration (MAC) Threshold limit value (TLV) Biological Limits for cancerogens 40ir Exposure limits for airborne contaminants found primary aluminium industry References MO v TX TINER RMC0021445 Introduction 7 Section 1 Principal contaminants in the workplace introduction 9 Prebake process 9 Poiroom 9 Carbon plant 9 Soderberg process 9 Potroom 9 Paste plant 10 Principal contaminants 10 Potrooms 10 Carbon plants 11 Cathode relining 1% Maintenance 1^ Cast house (ingot) 1^ Section 2 Toxicology of principal environmental contaminants Introduction ity Chemical exposures in the aluminium industry categories of exposure ity IPAI industrial hygiene guides 4$ Aluminium metal dust 4& Aluminium oxide iff Ammonia *5 Asbestos lO Beryllium Carbon monoxide 23 Chlorine IS Coal tar pitch volatiles Copper dust fume/mists T9 Fluorides 30 Hydrogen chloride 31 Hydrogen fluoride 3-J Lead, inorganic dusts/fumes 3 s Lithium carbonate 3 Magnesium oxide *4 Manganese dust/fume ^ Man-Made Mineral Fibre (MMMF) 4T Oil mist WW Ozone Particulates Not Otherwise Classified (PNOC) Phosphine Silica, crystalline Sulphur dioxide 50 Welding fumes S'!

Some individual standards such as vinyl ehlorldeashestos and lead have specific requirements regarding respirator selection.

As discussed in the preamble at 2398, the use of safety factors to account, inter alia, for variations in individual human responses, and uncertainties in the available data, is common 3 CTL018259 among leading industrial hygienists.

Florio is concerned about what he views as legal loopholes that would allow dioxin to continue to move into the environment if it was contained in waste oils that might be recycled, as they were in Missouri, leading to ADMINISTRATION OFFICIALS and chemical industry executives do not see any emergency.

No. 86-2385-0 JAMES DECKER AND NETA DECKER Plaintiffs Versus ARMSTRONG WORLD INDUSTRIES INC., ET AL, Defendants ) IN THE DISTRICT COURT ) > ) ) ) OF DALLAS COUNTY, TEXAS ) ) ) ) ) 95TH JUDICIAL DISTRICT RESPONSES OF DEFENDANT PROKO INDUSTRIES.

JJIOSH and CDC should work together to eradicate the 10 leading occupational health and safety problems.

Beversdgs & Diamond.

High liquid rates may also lead to flooding by not giving enough time for the liquid and vapor to separate in the downcomer.

TO: Distribution Interoffice Communication FROM: DATE: SUBJ: Tom Grumbles; Dr.