Document Ozoye1eoLb0J4ErnEVqp9Z39w

ESTPAINE fc*^JaJ>ouztotie& me. 7979 GSR! AVE. BATON ROUGE. LA 70820 ASBESTOS FIBER COUNT ANALYSIS for DOW CHEMICAL COMPANY Post Office Box 150 Plaquemine, Louisiana 70764 ATTENTION: Jackie Paul January 16, 1987 V nal 00 100479 CONFIDENTIAL 87-0269 p 'ESTPAINE ^JcLbotCltiOtieA INC. -- 7979 GSRI AVE. BATON ROUGE, LA 70820 DOW CHEMICAL COMPANY Plaquemine, Louisiana January 16, 1987 Seven (7) filter cassette samples were received on January 6, 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 03474 03475 03476 *^07409 07410 ^ 07413 #1 2 16 - 2-14 9 -2 = 7 9 67 - 2 = 65 14 - 2 = 12 103 I to II ~0 100 981 100 6,866 W> AIM- 100 3,433 00b- 100 3,433 -7JILQ. ,0o S' 100 31,879 9Go -o a S3 100 ^>0 5,885 ?60.o 33 fi/O 152,098 JlkQ- 0 ./r? #1 NOTE: Blank correction made at the fibers/filter calculation. DO 100480 CONFIDENTIAL. Philip Laboratory Director nal 87-0269 'EST-PAJNE JaJxnxttoiLees inc- TO79 GSHIAVE. BATON BOUGJe, LA 70806 < nal SAMPLE ANALYSES for DOW CHEMICAL COMPANY Post Office Box 150 Plaquemine, Louisiana 70764 ATTENTION: Jackie Paul January 23, 1987 DO 100481 CONFIDENTIAL 87-0379 7979GSR) AVE- BATON ROUGE. LA 70608 DOW CHEMICAL COMPANY Plaqueraine, Louisiana January 23, 1987 One (1) filter cassette sample was received at West-Paine Laboratories, Incorporated January 6, 1987 for the analysis of asbestos content. This sample was analyzed by scanning electron microscopy (SEM) at a magnification of 2.0Q0X to determine the size and quantity of fibers present. Each fiber observed was identified using energy dispersive x-ray spectrometer (EDS) analysis according to NIOSH method 7402. The result of this analysis is listed on the attached data sheet. Kenneth J. Hayes i/ Microscopy Laboratory Supervisor 'EST-PAINE fr T^JciboyctfotieA INC. 7979 GSRI AVE. BATON ROUGE, LA 70820 1 SAMPLE ID: 07413 This sample could not be quantified due to the high concentration of fiberous and non-fiberous organic material present. Four (4) photomicrographs were taken for illustration. A log for these pictures is provided below. (1) Secondary electron image at 500X showing several large and small organic.fibers. A high concentration of non-fiberous organic and inorganic particles are also present. (2) Backscattered electron image at 500X showing the same field as shown in photo #1. Inorganic particles exhibit high contrast bright images. Organic particles exhibit low contrast subdued images. (3) and (4) Secondary electron images at 2000X showning two fields of organic fibers. CDOONFIDENTIAL V