Document 6vQ0z4DY5xb2jn6XzQYQm5x1

p ZEST'PAINE JaJyoyattnieA inc. 7979 GSR! AVE, BATON ROUGE, LA 70820 RECEIVED FEB 2 41992 ind. hygiene dert. N klb V- ASBESTOS FIBER COUNT ANALYSIS FOR DOW CHEMICAL Industrial Hygiene Bldg. 3502 W Post Office Box 150 Plaquemine, LA 70764 ATTENTION: Ms. Darlene Creel February 19, 1992 00 A 11471.8 CONF T DENTIAL 20-1292 A Member ot the Inchcape Environmental Group / Plaquemine, LA February 19, 1992 Four (4) filter cassette samples were received on February 14, 1992 from Dow Chemical for fiber count. Fibers larger than 5 microns in length were counted by means of phase-contrast microscopy at a magnification of 400X. The procedure recommended by NIOSH method 7400A was followed. Pertinent information regarding fiber counts is as follows: Field Area: 0.00785 mm2 (Walton Beckett Graticule) Effective Collecting Area: 385 mm2 (25 mm Cassette) 855 mmz (37 mm Cassette) Limit of Quanititation: 10 fibers/100 fields Limit of Detection: > Average Blank Count @ Detection limits are based upon a minimal concentration of 7 f ibers/mmz. sample I.D. Fibers (>5um) Observed No. Of Fields Observed Fibers per Filter volume of Air (L) Fibers (>5um) per c.c. of Air Power IX: 13908 13909 Blank #1 Blank #2 20-1292 2 0 0 0 100 100 100 100 981 <490 <490 <490 -- -- -- --------- --- -- -- -- --------- --- / Philip W. West, Ph.D. //^Laboratory Director DO A 1147!9 CONFIDENTIAL. V* J A Member of the Inchcape Environmental Group WEST PAINE LABORATORIES INC. 7979 GSRl AVE. ' BATON ROUGE, LA 70820 PO #_ MSI #. i^sq-7 Sample I.D.: 1* I 3<To<? CHAIN-OF-CUSTODY RECORD SAMPLE COLLECTION: Collector's Name: Dariene S. Creel Telephone: 1504)389-6181 Company Name: Dow Chemical (Industrial Hygiene Bide. 3502WL Address: P.O. Box 150. Plaquemine. Louisiana 70765-0500 Date Sampled: lU 'Cl Time: Type of Process or Facility Sampled: Fiber count via NIOSH 7400 Field Information: Filter cassettes for fiber per filters &r~.l SAMPLE SHIPPING (other than transportation by collector): Transporter's Name: f, Date: ^~ ^^ Time: 0 Company Name: West Paine Courier> > ------- -- Address:_______ IjL----------------------------------------------------------------------------- Liii:--ffcfi \ /^9S2--iU- ASAMPLE RECEIVING: ktuid-' Person accepting sample. .Date: Company Name: WEST-PA1NE LABORATORIES. INC. Address: 7979 GSRI AVENUE. BATON ROUGE LOUISIANA 70820 PHONE:(5041769-4900 Sample DispositionStorageFurther TransportationOther___ CHAIN-OF-POSSESSION: (Attach additional sheets as needed to show continuity) TERMINATION OF CHAIN OF CUSTODY: Authorized by:Date: DO A 'Ll 4720 CONF'TDFNTTAL Time: Company/Name:. .Address: