Document 997KE515qp1gDdQ8wB49z0RpR

7979 GSR! AVE. BATON ROUGE, LA 70820 ASBESTOS FIBER COUNT ANALYSIS FOR DOW CHEMICAL Industrial Hygiene Bldg. 3502 Post Office Box 150 Plaguemine, LA 70764 W ATTENTION: Ms. Darlene Creel March 23, 1992 klb 20-2400 A Member of the Inchcape Environmental Group >suL/.>*: P 'EST'PAINE f> jQ^^g^otatatiei iwc, 7979 GSRI AVE. BATON ROUGE, LA 70820 DOW CHEMICAL Plaquemine, LA March 23, 1992 Six (6) filter cassette samples were received on March 19, 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 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 CA II: 13822 13823 Glycol I: 13826 Glycol II: 13827 Blank #1 Blank #2 0 0 4 0 0 0 100 100 100 100 100 100 <490 <490 ------ -- 1,962 <490 <490 <490 _ -- ----- --- - -- ... -- -- 20-2400 V. W.Philip kJ UjU, west, Ph.D. Laboratory Director DO A 1 1. 461 5 CONFTDENTTAl A Member of the inehcape Environmental Group J WEST PAINE LABORATORIES INC. 7979 GSRI AVE. BATON ROUGE, LA 7M20 po* iSookn l A. UMSI ^% Sample 1.0.: B I3W. *1383-0 CHAIN-OF-CUSTODY RECORD Sth-k * I r *2- SAMPLE COLLECTION: Collector's Name: Dariene S. CreelTelephone: 15041 389-6181 Company Name: Dow Chemical (Industrial Hygiene Bldg. 3502W) Address: P.O. Box 150. Plaauemine. Louisiana 70765-0500 Date Sampled: _________ 3- _________ Time: Type of Process or Facility Sampled: Fiber count via NIOSH 7400 Field Information: Filter cassettes for fiber per filters *138an - S' - CATX SAMPLE SHIPPING (other than transportation by collector): X' Address: 7979 GSRIAVENUE. BATON ROUGE LOUISIANA 70820 FHONE:r5Q4) 769-4900 Sample DispositionStorageFurther TransportationOther CHAIN-OF-POSSESSION: (Attach additional sheets as needed to show continuity) TERMINATION OF CHAIN OF CUSTODY: Authorized by:Date:Time: Company/Name:Address:. 00 A U4616 CONFIDENTIAL