Document 1QqDqxEwV5E3q6aag52046rzj

CertainTeed j Subject INDUSTRIAL HYGIENE SURVEY Hillsboro A/C Plant u, mi To ' ir- Jack AtUw'tson QF'" Tom Shaffer **' Location and mail code Hillsboro 521 Location and mail code 1125/4 cc: 0. Kictilstad - 1125/4 D. Hall - 2125/2B J. McGinley - 2/25/2B ' N. Pocock - Hillsboro 521 Please find attached the results of the air monitoring which Nick conducted for epichlorohydrin. In all cases, the results were found to be "none detected". The detection limit averaged 0.1 ppm, well below the OSHA limit of 5 ppm. These results constitute an "Employee Exposure Record" as defined in OSHA 29CFR1910.20 and CertainTeed Corporate Procedure AD-011. As such, they must be maintained for at least 30 years in the plant and be made available to those federal officials/designees and employees according to those guidelines. If you have any questions, please don't hesitate to contact me. TCS/tmf Ot-lt-OOOl C1O0A6345 Industrial Hygiene Survey Htlltboro A/C Pleat January, 1981 No. POSITION 31- LOCATION (date) 002 Epoxy Coupling Sprayer 1/28/81 003 NAME C. Miller 005 South Side End Painter 2/3/81 006 C. Miller TABLE 1 ANALYSIS FOE TIME MIN* RESULT* REMARKS eplchlorohydrln 10:26a11:4 6p 80 none detected <0.023 ppm EPOS 828 16" 150 Coupling eplchlorohydrln 2:17p3: lOp 1:23p2:l8p 3:20p3:27p 53 55 7 none detected <0.033 ppm none detected <0.034 ppa Respirator worn EPON 828 8" 150 pipe none detected <0.27 ppa * The OSHA Halt aa given In 29 CFR 1910.1000 Is 5 pp. Air aonltorlog was conducted on ISOag charcoal tubes vltb an MSA Model S pump equipped with a 92943 low flow aoapter* Calibration waa obtained before and after monitoring. Analysis was done by gas chromatography* CTD016346