Document b5aNGXaQp435bqJaMDqYyM4Lo

P>NUU< .'EST'PAINE '^J^abotatcnieA inc. 797# GSRI AVE. BATON ROUGE, LA 70820 klb ASBESTOS FIBER COUNT ANALYSIS FOR DOW CHEMICAL Industrial Hygiene Bldg. 3502 Post Office Box 150 Plaquemine, LA 70764 W ATTENTION: Ms. Darlene Creel January 31, 1992 DO A 114783 C.ONFTDFNTTA! 20-0778 A Member of the Inchcape Environmental Group EST-PA1NE ' \Jaboyatcnie* inc. 797S GSRI AVE. BATON ROUGE, LA 70620 DOW CHEMICAL Plaquemine, LA January 31, 1992 Four (4) filter cassette samples were received on January 30, 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 mmz (Walton Beckett Graticule) Effective Collecting Area: 385 mm2 (25 mm Cassette) 855 mm2 (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 Blank #1 Blank #2 13452 13488 0 2 1-1=0 8-1=7 100 100 100 100 <490 981 <490 3,433 Volume of Air (L) -- -- ------ Fibers (>5um) per c.c. of Air ___ -- -- -- 20-0778 V. DO A 1.14 784 CONF tdfnttai. .Philip W. West, Ph.D. /^-Laboratory Director A Member of the Inchcape Environmental Group J WEST PAINE LABORATORIES INC. 7979 GSR1 AVE. BATON ROUGE, LA 70820 po* MSI 7*7 k Sample I.D.: 6s/gjJt *3^ CBAIN-OF-CVSTOPY RECORD SAMPLE COLLECTION: Collector's Name: Darlene S. CreelTelephone: (504) 389-61&1 Company Name: Dow Chemical (Industrial Hygiene Bldg, 3502W) Address: P.O. Box 150. Plaouemine. Louisiana 70765-0500____________________ Date Sampled:)- ____________________ Time: Type of Process or Facility Sampled: Fiber count via NIOSH 7400'/?______________ Field Information: Filter cassettes for fiber per filtgs "TvAjJTh J fcCLCeJi? 134 KX SAMPLE SHIPPING (other than transportation by collector): <22Transporter's Name: 2Date: 1 ' 1________Time: A- $ Comoanv Name: West Paine Courier Address: $ > SAMPLE RECEIVING: Person accepting sample AD$x\/ Date: Ot /30^9^2 r. M15 J. Is U w 15 if Is 1 ^ i\ j3o \\ ... K lime: /ZD-34J Company Name: WEST*PAINE LABORATORIES. INC._______________________ Address: 7979 GSRI AVENUE. BATON ROUGE. LOUISIANA 7Q82Q PHONE:(5Q4) 769-49QQ Sample Disposition Storace Further Transportation__ Other CHAIN-OF-POSSESSION: (Attach additional sheets as needed to show continuity) 00 A 114780 TERMINATION OF CHAIN OF CUSTODY: conftdfnttai Authorized by:Date:Time:. Company/Name:Address: