Document dqK3zvjaJ7wpKR1QED38NNYR

*t >UT M CHAHLI.S1 ON PLANT UNION CARBIDE CORPORATION CHEMICALS AND PLASTICS P,6. BOX BOOB. SOUTH CHARLESTON. W. VA. *5303 April 26, 1976 Mr. Carl G. Beard, II, Director West Virginia Air Pollution Control Commission 1558 Washington Street, East Charleston, West Virginia 25311 Ref: Letter, Carl G. Beard, II to Arthur R. Ryrholm, April 12, 1976 Dear Mr. Beard: Subject: Vinyl Chloride Emissions From The South Charleston Plant The information which you requested is attached. Very truly yours, CLilPySJL^. A. R. Ryrholm Plant Manager ARR/pl Attachment UCC 098623 "(a) Vinyl Chloride emissions for the years 1967 through 1975 (these are to be the hourly values for a relatively trouble free operation);" See the attached table. Please note that the information is given in the form of annualized average emission rates. This is not precisely in the form requested, but we believe it to be suitable for the purposes of the Center of Disease Control study. UCC 098624 ATMOSPHERIC VCM EMISSIONS ANNUAL AVERAGE UNION CARBIDE CORPORATION - SOUTH CHARLESTON PLANT YEAR 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 EMISSIONS, LBS./HOUR 240 260 250 260 270 235 265 180 76 65* Emissions by the end of 1976 will have been reduced to approximately 3 pounds per hour. UCC 098625 The dates, times and quantities of unusual emissions vinyl chloride within the 1967 - 1975 time period, This information follows. UcC 098626 1970 1971 1972 1973 1974 1975 ABNORMAL EMISSIONS (Estimates) ! - - Number of Abnormal Emissions 28 18 12 5 2 0 These emissions ranged from 1000 to 8000 pounds. The average has been estimated as 2000 pounds; the larger releases have been very infrequent. 1969. No estimates are available for the years 1967 - 1968 UCC 098627 An emission of 7000 + lbs. of vinyl chloride occurred on October 1, 1974, at about 2:15 a.m. This is the largest emission of which we have knowledge of during the 1967 - 1975 period. Ten samples were taken to determine the effect and persistency of vinyl chloride in the community as a result of this release. Time Sample Station Type Sample VCM Cone. ppmv 7:36 a.m. No. Chas. Fire Station Grab <0.05 7:36 a.m. 11:55 a.m. No. Chas. Fire Station Carbon tube <0.05 7:50 a.m. No. 8* Grab 0.2 7:50 a.m. 11:55 a.m. No. 8* Carbon Tube <0.05 8 :11 a.m. No. 9* Grab 0.1 8:11 a.m. 12 Noon No. 9* Carbon Tube <0.05 8:25 a.m. No. 10* Grab <0.05 8:25 a.m. 12:15 p.m. No. 10* Carbon Tube NA 8:45 a.m. No. 3* Grab <0.05 8:45 a.m. 12:15 p.m. No. 3* Carbon Tube <0.05 Weather conditions at the time of the incidenit: Temperature Humidity Wind - Calm Other 40 F 85% Out of the SW Fog Condition The emission occurred at a facility on Blaine Island, where all vinyl chloride consuming units are located. Virtually all abnormal vinyl chloride emissions have occurred at facilities located on Blaine Island. *Consult the attached map. UCC 098628 "(c) Any meteorological data that your plant has that was taken by your personnel during the same time at your facility m South Charleston. It would be particularly helpful if this particular information had already been reduced to wind roses." The following section is a summary of the requested data. UCC 098629 Data Base: April 21, 1965 through March 31, 1966 Data from an aerovane located on our office building in South Charleston (inoperable since 1973) are used in the Figure B-12 wind roses. Calm winds have been distributed among, the 1-3 mile p$r hour groups of the 8 point wind recofd. UCC 098630 The following section is a summary of community monitoring data collected by UCC. This is an on-going program. Please note that the OSHA TLV for an eight hour working day is 1 ppmv. The OSHA "action level" is 0.5 ppmv. If areas are less than 0.5 ppm, OSHA deems it unnecessary to continue additional monitoring, unless there is reason to believe that concentrations have increased. Sample locations have been chosen in a manner which takes into account the frequency distribution of wind velocity. UCC 098631 vcc 098632 ambient air vcm monitoring GRAB SAMPLES - CHARCOAL TUBE SAMPLES 1974 Total No. Samples ND (None Detected) > ND, <0.5 ppmv >0.5 ppmv, <1.0 ppmv >"1.0 ppmv / Total No. Samples ND (None Detected) y ND,< 0.5 ppmv >0.5 ppmv ,<1.0 ppmv ^1.0 ppmv Total No. Samples ND (None Detected) > ND, <0.5 ppmv >0.5 ppmv ,<1.0 ppmv T 1* 0 ppmv Fence Line - Community . 65 57 8 None None 128 119 9 None None 47 46 1 None None 178 173 5 None None Fence Line - Community 2 None 2 None None 11 10 1 None None 1975 29 25 4 None None 37 30 17 None None 1976 (Charcoal Tube Samples Only, 4 Hrs. Duration) 24 20 4 None None . 30 29 1 Non None 1. Grab samples collected in 50 ml syringes and analyzed by directed injection in GC (FID) 2. Charcoal Tube samples collected by battery powered pumps, desorbed by solvent extraction then analyzed by GC (FID). 3. Sensitivity of methods (1) and (2) is approximately 0.05 ppmv. Hence, ND (Non Detected) s less than 0.05 ppmv. CHARLESTON XE c`/ tec [15 ttaft BJ2 ^7j 7Lt,A-A <6$L XL CKulfO* OriMM* c~* r m c c*i. Unififi Gtibli* YmMc*! C - AMBIENT' AIR VCM MONITORING COMMUNITY (9) (10) Entrance gate to Bldg. 8-198, 2nd Ave City Fire Station, 4th Ave. Red Head Service Station, MacCorkle A Patrick Street Bridge, North end. Blue Moon Tavern, 7th Ave. McNeil Fence Co., 7th Ave. State Dept. Hwys. Hdgs., W. Wash. St. City Waste Water Treatment Plant, 26th St. City Waste Water Pump Station, 7th A\ Recreation Center. Bert Wolfe Ford, Patrick St., Plaza FENCELINE (11) (12) (14) (15) (22) (23) (24) *('25) Fenceline, Fenceline, Fenceline, Fenceline, Fenceline, Fenceline, Fenceline, Fenceline, Bldg. 175. Bldg. 222 NE. Bldg. 156 N. Bldg. 200 NE. Bldg. 308 N. Bldg. 307 NE. Gate 14. Waste Treatment Plant. Historical wind direction frequency included in another section of this report is the basis of sampling site selection. UCC 098633 Blind Copies: Mr. J L. Carvajal Mr. C. E. Fry Mr. R. E. Jarre^t Mr. R. T. Kramer Mr. B. L. Murray Mr. G. W. Stocking Mr. R. N. Wheeler Mr. H. L. Wise Mr. J. L. Worstell Mr. W. C. Young Note to recipients of "be" copies: The letter to Carl Beard included a large amount of computer printout information concerning wind velocity data from the Building 82 weather station. This package of computer output is one-half inch thick, so we have not attached it to your indivi dual copies of this letter. J.L.Worstell 4/27/76 UCC 098634