Document NNp8QpqRZ5v721w0Ko1ZQB8LQ

ABDOO136637 PMc ABERDEEN CHEMICAL PLANT INDUSTRIAL HYGIENE MONTHLY REPORT Month of: February Date of Report: April 3, 1984 1. ROUTINE CHEMICAL DOSIMETRY All Sample Results: Chemical VCM Lead Total Particulates Overexposures < PEL No. % 25 96.2 32 97.0 12 100.0 > PEL (OVEREXPOSURE') No. % 1 3.8 1 3.0 0 0.0 Job Class Exposure Source Line Compounder 61.1* Micrograms Lead/m-5 Employee overexposed while charging Line III blenders. No specific cause has been identified. Chief Operator 29.1* ppm, VCM *Respiratory protection worn. 2. NOISE CONTROL Employee overexposed while helping change VCM filter pack filters. Resin deboxing area noise was reduced during February by insulating the cone at the bottom of the Sweco screener feed hopper. Noise level measurements taken before and after the insulation, using a General Radio Model 1565-B sound level meter, were : Location Noise Level, dBA Before Insulation After Insulation 1. 2 ft. from cone, on mezzanine 110 98-103 2. 16 ft. from cone, at ground level 95 92 3. Main traffic isle, at south door* 93 89 *84 dBA with hopper vibrator "off". Industrial Hygiene Report Page 2 ABDOO136638 3. GMD SYSTEMS, INC, PASSIVE MONITOR The lab-based familiarization study of the passive, VCM monitor marketed by GMD Systems, Inc. was completed. The second phase of the evaluation, involving reproducibility studies, was begun. cc: JF, CRM, PEM, PJK, LPS, WFH, CRS, RAF, RAM, AHS Tom Grumbles - Houston J. R. Drumwright, M.D. - Ponca City ( %< PEL 100 VCM 0 ABDOO136639 ABERDEEN CHEMICAL PLANT CHEMICAL DOSIMETRY TRENDS (