Document pyyMVmggE5dmzwJ0xKYR3Dpk

BUSINESS CONFIDENTIAL INDUSTRIAL HYGIENE MONITORING FOR ___________ASBESTOS TO: H. R. Wright, 2000-107 Computer Ref. W-1424 Date April 20, 1983 K.E. Denison, 2000-137 T.R. Damron, 2000-107 R.E. Peele, 701-334 PERSON MONITORED ______________________Area Sample__________________________________ Location Bldg, 2000 - Photo Lab Date 04/07/83 EXPOSURE RESULTS Sample No. 1 2 Cone. 0.0 fibers/ cc Sampling Time y Wrs J1 Mins (0842-1813 hrs) Comments Sample collected on mixed cellulose ester filter 3 4 5 6 Time-Weighted Average Concentration (TWA) Ceiling Concentration ALLOWABLE EXPOSURE TWA Ceiling 2 fibers/cc X OSHA OSHA UCC UCC Other Other COMMENTS Air samples were collected in Millard Chambers' photo lab in response to his concern that particulate matter, which he had observed to settle on various surfaces throughout the lab, could possibly be asbestos fibers. An air sample designed to determine asbestos fiber concentration and a sample designed to determine total airborne dust concentration were collected. Sample analyses indicated that no asbestos fibers were present and that the dust level (0.008 mg/M3) was below the ACGIH standard of 5 mg/M3 for respir able dust. Please notify Mr. Chambers of sampling results. WORK BY Ipl'bWu- <h. yVjUu,-tu. APPROVED BY Mario F. Stowers UCC 024255 Man liar A. Pa tel