Document XNMaeyqQ1BgRpVYBqp0xXRnR

PLAINTIFFS EXHIBIT UC-1178 UNION CARBIDE O RPORATION P. O. BOX 471 . TEXAS INDUSTRIAL HYGIENE July 23, 1984 Mr. Gerald A. Baty U. S. Department of Labor Occupational Safety and Health Adminis. Houston Area Office 2320 La Branch, Room 1103 Houston, TX 77004 Re: 70691548 Dear Mr. Baty: As promised in my letter of June 4, 1984, an evaluation of crotonaldehyde exposures in our Ethanol Unit (Bldg. 92)-has been conducted and in a total of 42 8-hour determinations, no crotonaldehyde was detected. The data was taken over an 11 day period and included operations and maintenance employees and area samples. The reported sensitivity from Mideco, the AIHA certified lab that analyzed the samples, was 0.1 ppm by gas chromatography mass spectrophotometry. This is well below the permissible exposure limit of 2 ppm and based on this data no corrective actions or modifications are anticipated. ... Your interest in this matter is appreciated and we hope that this report will satisfy your requirements. Sincerely, KEMsIR Crotona2 Bcc: L. E. Calvert S. J. Footer J. B. Leverton F. S. Provenzano R. C. Wise - 500 B. L. White - 500 A. P. Yalcinkaya Kirk E. Martin, CIH UCTC 21108