It is being stressed very strongly that violation of standard safety practices in the future could lead to termination whether an accident is involved or not.

Suite 1000 Washington, D.C. 20036 Re: Proposed Amendments to the National Emission Standard for Vinyl Chloride Dear Jerry: This letter will briefly summarize the background leading to the proposal of the amendments to the National Emission Standard for Vinyl Chloride and highlight the major issues raised by the amendments.

For the production of this much desired material, wiich can be combined in so many different ways with plasticisers, fillers and pigments that it has become one of the leading products of the plastics age within the last twenty years, is apparently very much more dangerous than had been previously been assumed

This leads to a brief disucssion of the program (in which we participated) conducted by the Environmental Protective Service in Canada.

Evidence suggested that a continued increase of PCBs in the environment could lead to undesirable long-term effects.

Their evidence is striking and should lead promptly to further study and, one may presume, to control of another occupa fion-retatdd 'tisF.'

Daicel states that the process is more simple to operate than the process based on the natural products and that it does not involve the use of chlorine or caustic soda, which could lead to the formation of pollution-causing by products.

This pollution may lead to a depiction of the ozone layer with possible ultimate adverse consequences for human health.

Tribasic Lead Sulfate (Tribase) This raw material was evaluated as the possible source of the plate-out problem encountered in the 3805-D compound for All Disc.

Included are asbestos (from brake linings), rubber (from tires), 2inc (from oil and tires), lead (from gasoline), and other heavy metals and nitrogen and phosphorus compounds.

INTRODUCTION Vinyl chloride causes hepatic fibrosis that may lead to portal hyper tension and angiosarcoma in liver.

. '* , <> 1 Truck Loading 2 Quality Control Laboratory) west 3 Quality Control Laboratory) east 4 Lunchroom 5 Uu.Lk leading Tower 6 Dryer Koom 7 hogging Seat 5 .

SOLIDS, OR GASES Dibasic lead phthalate - Toxic TLV % r XUnitsj_ C 4.0 Antimony Trioxide - Cancer suspect < " SOILING POINT (F.)

In view "of the fact that Hitachi is the leading company in the Japanese F.R.P. industry, and their formal acceptance of RG-244 will certainly cause a great impact on other companies# Japan Aerosil is seriously concerned that the above outcome will affect their other customers.

L L M, P P P, L P, L, M M P, M, L M P, M, L M BRB 0572 CHEMICALS MENTIONED IN SENATE-HOUSE TESTIMONY RELATING TO THE TOXIC SUBSTANCES CONTROL ACT (BROWNSVILLE PRODUCTS) Asbestos Boiler Cleaning Products Chromium Carbonates Chemical Reagents Chlorinated Hydrocarbons Chlorine Detergents Food Additives Mercury Nickel Phosphates Polyvinyl chloride Silica Caustic Soda Freon propellants Sodium Tripolyphosphates CHEMICALS LISTED BY EPA FOR EXAMINATION AS CANDIDATES FOR DESIGNATION AS TOXIC WATER POLLUTANTS (BROWNSVILLE PRODUCTS) Chromium A sbestos Lead Nickel \ BRB 0573 -TOP 50 PRODUCTS BASED ON 1973 PRODUCTION (USED AT BROWNSVILLE) 1.