Document v6dNywOLdV1YRYO5L6kx4rOvw

* ^ Z Z - / C 23> C-8 IN OFF-PLANT WATER SYSTEMS NONE DETECTED IN UPSTREAM PUBLIC WATER SYSTEM, NONE DETECTED IN WASHINGTON WORKS' DRINKING WATER. DETECTABLE LEVELS FOUND IN TWO DOWNSTREAM PUBLIC WATER SYSTEMS. 'Su JWR:ldr 6/84 10951565 000264 RJZ009980 0 8 PROGRAM WATER REPLACE 0 8 WITH TBSA IN FEP PROCESS. PARTITIONS WITH PRODUCT NOT WATER. DECOMPOSES TO PRESUMED INNOCUOUS BY-PRODUCT IN HUMID HEAT TREATING OVEN. VENTED TO ATMOSPHERE. TBSA PROJECT AUTHORIZED FOR CHAMBERS WORKS. START-UP 11/84. SWITCH COMPLETE MID 1985. AIR STUDY ABATEMENT BY ENGINEERING CHANGES. tMi/ i >1 JWR:ldr 6/84 OOOJcbb RJZOO 9981 C ^ N67r WO/?KS ' a NNUM- M E m OONCENTR&T/OAf 000266 S3 Li N O O VO <CDo K) -5eoo 3600 DS/O5DTO/9A/CS -4//0V0 /=4T0 S0T eooo 0 < :M I(|/|'> I 3600 800 ENGINEERING STUDY RESULTS THERMAL DESTRUCTION - ECONOMICS $1MM + INVESTMENT % im ANNUAL OPERATING COST (APPROXIMATELY $0,15/LB. OF PRODUCT) - TIMING 1 1/2 TO 2 1/2 YEARS SCRUBBING AND RECOVERY - ECONOMICS $3.5MM + INVESTMENT $1,5MM DEVELOPMENT COST S2.5MM ANNUAL OPERATING COST (APPROXIMATELY S O . W L B . OF PRODUCT) BUT POTENTIAL BREAK-EVEN IF RECOVERED C-8 IS USABLE - TIMING A-5 YEARS JWR:LDR 6/8A 000267 95"'568RJZ009983 l l / f >J CONCLUSIONS NO KNOWN HEALTH EFFECTS AT CURRENT LEVELS THIRTY YEARS EXPERIENCE - CONCERN ABOUT LONGER RANGE POTENTIAL LIABILITY - THIRD PARTY LAWSUITS - ADVERSE PRESS JWR:ldr 6/84 000268 EID951569 RJZ009984 PROGRAMS WATER PURSUE CONVERSION TO TBSA DETERMINE DISPOSITION OF C-8 IN SUPERNATE TO CHAMBERS WORKS AIR DEFINE EVOLUTION OF C-8 IN DRYER PURSUE FINE POWDER DRYER SLIPSTREAM INCINERATION TOTAL DRYER AIR STREAM INCINERATION: DIRECT/BOILER PURSUE DRYER EXHAUST SCRUBBING AND RECOVERY (A-5 YEARS) DISPERSION PRODUCT - KEEP CUSTOMERS FULLY INFORMED BLOOD DONATIONS - ALLOW TO CONTINUE FOLLOW 3M STUDIES CONTINUE TO ADVISE SISTER PLANTS OF CUR ACTIVITIES JWR:ldr 6/8A 0002(13 \D95T570 RJZ009985