These Investigators were lead to believe that a cumulative index may not be the best parameter to use with chrysotile asbestos-related diseases.

Roy T.

-I ' i * A Division of The Society of The Plastics industry, Inc.

I i OUT OF NOTHING Legal limits on asbestos exposure are becoming By Jeffrey A.

1 TOC P&M Environmental Affairs (COMPANY) INTEROFFICE COMMUNICATION TO: FOR: FROM: RE: Tenneco Polymers Dennis Hersh R.

. |% _l U 0 METALS g) TOTAL (PPM) Q PA EXTRACTION PROCEDURE lipp/L) ARSENIC (A,) L_ None selenium (S*n None BARIUM (Ba) L_ None SILVER (Afl| i, None CADMIUM (Cd| L* None COPPER (Cu) l None CHROMIUM (Cr) None NICKEL (Ni) L -N.QD- MERCURY (Ho) L_ None ZINC On) L None LEAD iPhl 1__ None Hone,THALUUM (TO L _l* icr+<i , chromium-hex None _l L !

Such interstate variability in AALs for toxic substances may lead to differential protection of the public health from air toxics, confuse the pub lic about air pollution and health con cerns, and undercut the credibility of public health and environmental regula tory agencies.

The wooden vent line lead to an unlined concrete sump at the base of the stack.

KP, U\i. y i *4 Porphyrinogens, Porphyrins, and the Porphyrias The porphyrias are consequences of impairment either in the formation of the porphyrinogens from porphobilinogen or in the transformation of the porphyrinogens to hem e.1 Such an impairment causes a pathologic accumulation of porphobilinogen or porphyrins (or both) in tissues and body fluids. ^ The manifestations of the porphyrias include jiiCtuiSnsitivity-of theSkin, persistent abdominal aching or pain, and neuropathy with widely variable expression that may affect the central, autonomic, and peripheral systems and include mental disturbance, motor dysfunction, and sensory loss.

I lt UNION CARBIDE CORPORATION P.,0.

Or.

.,- and~-lead ] compounds.

Suspectedand Established CarcinogensPresent in Leather Manufacturing* IARC Job Materials used or present carcinogenicity evaluation Hide preparation Trim, side, sort soak, wash Sodium arsenate, arsenious anhydride, arsenious oxide Ethylene oxide Flesh Unhair Mineral oil Arsenic sulfide Bate, pickle Tanning Tan Wring, split, shave, neutralize, retan color Fat liquor Setting out Leather finishing Toggle, paste, stake, mill, buff finish N-Nitrosodimethylamine and N-Nitrosomorpholine, produced from dimethylamine sulfate Potassium dichromate, sodium dichromate, chromic oxide Dyes Acid violet 49 (benzyl violet 4B) Direct black 38 Direct blue 14 (trypan blue) Food Red 5 (Ponceau MX) Solvent yellow 34 (auramine) Mineral oil Cadmium sulfide Lead chromate 1,4 Dioxane Maintenance and support Carpenter Chemist Truck driver Engineer Stationary fireman Foreman Inspector Mechanic Millwright Shipper Measurer Steamfitter Supervisor Watchman Elevator operator Stock clerk Janitor Maintenance worker Dyes, chromium (VI) compounds Asbestos * Adapted from IARC Monographs [198I].

A ASBESTOS INFORMATION ASSOCIATION 1745 Jellerson Oavis Highway.

^(;K CHEMICAL MANUFACTURERS ASSOCIATION ^ RECEIVED Kt-,'- U 1532 Environmental Affairs April 12, 1982 TO: Vinyl Chloride Program Panel FROM: Carol R.