Document YL58O0QBGRwL7KE95oRxvK8N

P 1LST-PA1NE JcdyotaiatleA inc. . rr- ^ i ~ 7979 GSRI AVE. * BATON ROUGE. LA 70820 A 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 April 29, 1992 DO A 20-3361 A Member of the Inchcape Environmental Group J Plaquemine, LA April 29, 1992 Four (4) filter cassette samples were received on April 24, 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 fibers/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 Caustic: 13525 Utilities: 13524 Blank #1 Blank #2 1 0 0 0 100 100 100 100 <490 <490 <490 <490 -- -- -- -- -- -- -- -- 20-3361 V, Laboratory Director DO A 114598 CONFIDENTIAL A Member of the Inchcepe Environmental Group J WEST1 PAINE -LABORATORIES INC. 7979 GSR1 AVE. BATON ROUGE, LA 70820 LoDpo * [S I ^3____ MSI # Sample LD.: CHAIN-OF-CUSTODY RECORD SAMPLE COLLECTION: Collector's Name: Darlene S. Creel Telephone: (504) 389-6181 Company Name: Dow Chemical (Industrial Hygiene Bldg. 3502W) Address: P.O. Box ISO. Plaouemine. Louisiana 70765-0500 Date Sampled: M - ZXh 7X _Time:_ Type of Process or Facility Sampled: Fiber count via NIOSH 7400 Field Information: Filter cassettes for fiber per filters &k-Jf * I IMaJrtX. SAMPLE SHIPPING (other than transportation by collector): C.Transporter's Name: V Company Name: West Paine Courier Address: P $ ,___________ _________________Date:. ^ " ^ H ` Time;. SAMPLE RECEIVING: Person accepting sample. ^rvv^.... .Dale: Company Name: WEST-PA1NE LAB^OORRAATORIES. Ml Address: 7979 GSRI AVENUE. BATON ROUGE. LOUISIANA 70820 PHONE:(5Q4) 769-49QQ_ Sample Disposition. .Storage. .Further Transportation. Other. CHAIN-OF-POSSESSION: (Attach additional sheets as needed to show continuity) TERMINATION OF CHAIN OF CUSTODY: D0 a 114599 CONFIDENTIAL Authorized bv: Date: Time: Company/Name:. .Address: