Document N2K9pkBoRarDXxMd29K6q0Dwb

FRjM T0m FLORES ENVIRONMENTAL CONTROL December 27, 1973 T0 MR. A. A. RAMBIKUR ENVIRONMENTAL CONTROL cc: Mr. W. Genter/Mr. S.W. Marshall Mr. C. F. Scott Mr. C. L. Pittman - Pittsburgh Mr. T. B. Bonney - Pittsburgh RE:ASBESTOS DUST TEST ON FLAMEMASTIC FLAME RETARDANT Samples were taken at R-45-9Y motor control center while spraying the cable trays with flamemastic flame retardant material. Two samplers were used, one on the man doing the spraying and the other one was placed at the northeast corner of the room with the face of the filter facing the wall. This was to prevent contamination of the filter by a direct hit from the spray gun. A fine fog was visible in the room while spraying as well as the pungent odor of the vehicle used in the mixture. Both men working in the room wore hoods with purge air. A noticeable amount of material was collected on the filters, but upon examination under the microscope the asbestos fibers on both filters were well below the required level. Results below: Date Test Time Sampled Location Concentration Fibers/ml Time Weighted Avg. 12-20-73 1 2 71.17 mins. 57.62 mins. On man By wall .938 .023 .139 .0028 TF:wc J ALCOA TOM FLORES APC 005233 r-4M (mkv n-a)