Document 94QXvoKmqXXx3eKrD2YEX2G3

EST'PAINE JaJyoycLiatieA iwc., 797B GSHI AVE BATON ROUGE, LA 70820 \ klb V ASBESTOS.FIBER COUNT ANALYSIS FOR DOW CHEMICAL Industrial Hygiene Bldg. 3502 W Post Office Box 150 Plaquemine, LA 70765-0150 ATTENTIONS Ms. Darlene Creel April 21, 1992 00 A 1 1.4603 CONFIDENTIAL 20-3186 A Member of the Inchcape Environmental Group J Plaquemine, LA April 21, 1992 Four (4) filter cassette samples were received on April 15, 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 mm2 (37 mm Cassette) Limit of Quantitation: 10 fibers/100 fields Limit of Detection: > Average Blank Count @ Detection limits are based upon a minimal concentration of 7 f ibers/mm2. Sample I.D. Fibers (>5um) Observed No. of Fields Observed Fibers per Filter Volume of Air (L) Fibers (>5um) per c.c. of Air Poly A: 13558 Cellulose: 13559 Blank #1 Blank #2 1 149 0 0 100 20 100 100 490 -- 365,382 -- <490 -- <490 -- -- -- -- -- 20-3186 V Philip W( West, Ph.D. Laboratory Director A Member of the Inchcape Environmental Group DO A 114604 C0NFTDENTTAI T PALNE ORATORIES INC. ) GSR1 AVE. aTON ROUGE, LA 70820 Sample I.D.: * CHA1N-OF-CUSTODY RECORD SAMPLE COLLECTION: Collector's Name: Darlene S. Creel Telephone: (504) 389-6181 Company Name: Dow Chemical (Industrial Hygiene Bide. 3502W) Address: P.O. Box 150. Plaquemine. Louisiana 70765-0500 Date Sampled;; 4-n N-\2> Time: Type of Process or Facility Sampled: Fiber count via NIOSH 7400 Field Information: Filter cassettes for fiber oer filters j^irnjb fc 15559 R *1355g SAMPLE SHIPPING (other than transportation by collector): Transporter's Name:. ff.&cJUCM'Date: Company Name: West Paine Courier _jIAAddress:. _________________ SAMPLE RECEIVING: Person accepting sample. .Pat Company Name: WEST-PAINE LABORATORIES. INC. Address: 7979 GSR1 AVENUE. BATON ROUGE LOUISIANA 70820 PHONEH504r769-4900 Sample DispositionStorageFurther TransportationOther___ CHAIN-OF-POSSESSION: (Attach additional sheets as needed to show continuity) TERMINATION OF CHAIN OF CUSTODY: q0 a n. 460 5 confidential Authorized by:Date:Time: Company/Name:. .Address: