Document 9LmNB42jXJaeOJO7oj96bOMop

Vista Chemical Company 90C Threodneedle Hot. s;iton, Texas 77079 (71 588-3000 P O. Box 1 9029 Houston, Texas 77224 Fax (713) 588-3236 July 5, 1990 Meredith Scheck The Vinyl Institute 155 Route 46 West Wayne, NJ 07470 Dear Meredith, \ji) r ` VIS1A, jN'-.-P ii I, -4 " ' L V'- ; J b( i-Et 1. 6 1--* , We are being told by the Stat 5 of Mississippi the unit risk factor for VCM is 4.2 x 10'J/microgrnm/m^ . Multiplication of the unit risk factor by the fenceline concen tration provides a worst case estimate of risk from a particular fac Llity. As state air toxic programs b scome prevalent, the unit risk factor will be more of an issue. I m interested in others' experience or knowledge on what factor is b sing used to estimate risk from their facilities. If you could poll the members I would appreciate it. ^ v' Sincerely, -S-- Joe Ledvina \ 0' cc: FGJ SPI-00965 ((( HYDRO fefif POLYMERS Vinyls Division Dr R T Gottesman Executive Director The Vinyl Institute Wayne Interchange Plaza II 155 Route 46 West Wayne, NJ 07470 USA Your ref. Our ret. HMC/PAM/15 Your letter of Date 13 1 89 REC'D JAN 171989 Dear Roy, :CET0C REPORT NO 31 In response to your letter of >anuary 4th, please find enclosed one copy of the above report. There is no charge. I have been out of the office for several days, and will study the two items that you sent as soon as the backlog of telephone calls etc. is dealt with very much appreciate such items to extend my knowledge of what is happening. My best wishes for the New Year 'ours sincerely, M H M Clayton Director Environmental Protection ( Y. ^ ;- o y MX d. , SPI-00966 Hydro Polymers Lid Newton Aycliffe. Co Durham. OL56EA. England Registered Te `phone Telex: 58322 in England Nat onal: (0325) 300555 Fax No. 1631120 Inte-nat: (44 325) 300555 (0325)300215 Registered Office: School Aycliffe Lane. Newton Aycliffe. Co Durham. DL5 6EA. Enaland.