Document B8zERwa23e5NVGyw0dr92Y9ej

p WEST-PAIN E JabotatotieA iwc., 7979 GSRI AVE. BATON ROUGE, LA 70820 ASBESTOS FIBER COUNT ANALYSIS for DOW CHEMICAL COMPANY Post Office Box 150 Plaquemine, Louisiana 70764 ATTENTION: Jackie Paul March 6, 1987 DO 100550 CONFIDENTIAL lab 87-1077 p /EST-PAINE V^JaJ>otatotie& inc. 7979 GSRI AVE. BATON ROUGE, LA 70820 DOW CHEMICAL COMPANY Plaquemine, Louisiana March 6, 1987 Seven (7) filter cassette samples were received on March 4, 1987 from Dow Chemical Company for asbestos 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. Sample ID. Fibers (>5um) Observed No. of Fields Observed Fibers per Filter Volume of Air (L) Fibers (>5um) per c.c. of Air Blank 2 100 981 07682 14 - 2 = 12 100 5,885 07683 6 -2 = 4 100 1,962 #2 07684 102 62 78,165 07685 64 - 2 = 62 100 30,408 07687 10 -2 = 8 100 3,924 #1 07688 07689 4 -2 = 2 100 981 #1 07690 #1 03485 #1 06978 #1 Filter was coated with material which would not dissolve, making the filter unreadable. #2 Blank correction made at the fibers/filter calculation.