Document O3MX3kzvjXbEmEkaV9EvpLJvX

c CAMBRIDGE C ,fF- 000631 -- |v\ H^S To: J. Danel/Enoree From: T. E. Hamilton cc: i'll J. W. Wolter 7 BM Date: Subject: 5 June 1984 Air Sampling in Min^^na Mill Shops The results of the air sampling done by Eric Moeller and me in Enoree show levels of fibers in the mine and mill shops to be below 0.008 f/cc. The total dust sample collected on Bobo in the dry mill is below the 10 mglmT Permissible Exposure Limit for Total Dust. In my opinion the fiber levels are not above what we would expect for normal background levels. TEH/al Attachments T. E. Hamilton H027 *% o* .': ' - CONSTRUCTION PRODUCTS DIVISION c C0NF REQUEST FOR TECHNICAL SERVICE C ENT IAL Report: hpOZF) Croup: BPD Manufacturing Date: 21 Ha 1; 1984 ________________ Charge No.: 1174______________________ Requestor: Thomas E. Hamilton Marketing or Manufacturing Approvals: Name: Thomas E. Hami1 ton Approved . > PROBLEM TITLE: Environmental Evaluation -- Air -- Fibrous Materials. SIGNIFICANCE: The evaluation-of workplace air on a periodic basis is necessary to comply with the air sampling section of the OSHA Asbestos Standard. SPECIFIC OBJECTIVE: Determine fiber counts for filter media. SUGGESTED APPROACH: Phase contrast microscopy. - DEADLINE (last day information will be of value): Two (2) weeks. DETAILS OF PROBLEM: Please evaluate Engineering samples from Enoree sample numbers E-l through E-5 ADDITIONAL COPIES: Original to Library; j.w.woltct, u.c.Duecker, F.w.Eaton T.E.Hamilton, W.R.Wright >c REQUEST FOR TECHNICAL SERVICE PACK 2 c NUMBER: ____________ 76029 CROUP: BPD Manufacturing ACTUAL COST: $150.00 REPORTING DATE: 5/25/84 SUMMARY AND RESULTS: Five engineering samples were submitted for analysis of fiber content. The results are as shown on the attached Air Sampling Record Sheet. MRL/ph Attachment Mary L. Raffaele e s G** h- UJ UJ ----oMCE<i. TxnJ, C in o o 4 OX. ou X to I o O' o u UJ O' o 5 0. 5 < wV Wn 3u Jt>t <nv-c> oevv. vum v ao a H k. x to -- CL < UJ o > o o_l o u >< o b- <o >- UJ u. < to % X h- < UJ I ToJ <