Document 5LGKO4MExxB577r9ZjNpX0X75

ABDOO136642 ABERDEEN CHEMICAL PLANT INDUSTRIAL HYGIENE MONTHLY REPORT Month of: February Date of Report: April 3, 1984 1. ROUTINE CHEMICAL DOSIMETRY All Sample Results: Chemical < PEL No. % > PEL (OVEREXPOSURE) No. % VCM Lead Total Particulates 2.5 96.2 32 97.0 12 100.0 1 1 0 3.8 3.0 0.0 Overexposures Job Class Exposure Source Line Compounder 61.1* Micrograms Lead/m^ Employee overexposed while charging Line III blenders No specific cause has been identified. Chief Operator 29.1* ppm, VCM Employee overexposed while helping change VCM filter pack filters. NOISE CONTROL 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 ABDOO136643 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, WFH, CRS, RAF, RAM, AHS Tom Grumbles - Houston J. R. Drumwright, M.D. Ponca City