Document VjKzd6w35J9gvYJ0vx9BKgoEZ

John a. j urgiel & Associates, Inc. January 12, l'?H7 18)0 CRAIC RC AC. SUITE 207 ST. LOUIS. MISSOURI 63li<5 13141 878-8868 Mr. Bill Cunm nQh.im Industrial Hygiene Manager Shell Oil Co. ^ PO Bom 262 Wood River, IL 62095 Dear Bill: On airborne asbestos survey was corulur ter) on January 9. 1927. Asbestos containing materials were removed from a process line on the nest vacuum flasher furnace. A 7-man crew comprised of Shell Tnsulatois performed this removal project. A total of B airborne samples were collected tlur i ng the removal projert. Personnel samples ranged fiom u.ul - 0.26 fibers per cubic cent imetei ( f/cc > . Cine sample did exceed the Occupational Safety and Health Administration (CISHA) Asbestos Standard 1926.55(c) of 0.2 f/cc. 'Personnel were equipped with half mast-- SuCVWjair, and Mine Safety Appliance (MSA) full and half mask respirators. A high efficiency particulate filter was the selected cartridge. Additional nrotective equipment consisted of disposable coveralls and gloves. Three area samples collected at the perimeter of the controlled area indicated airborne fibers below detectable limits of analysis (i.e. less than 0.01 f/'cc). The following conditions attributed to elevated airborne fiber concentrations during removal: 1) the colder temper atures <29 degrees P) minimized wetting techniques, 2) the the 7-man crpw removed asbestos at a higher than normal rate, and 2) the lack of a negative air pressure machine while workinq in an enclosure. However, a negative pressure is limited in its aoility to reduce personnel e>poure in an enclosure. (lor l practices and proper wktino of asbestos material are by far more effective cnnlroi mewMii es. Please* r. a 1 I if you have any questions reqaidinu this i epor t . Vr.>i y truly yoins , l Stephen W. HechtIndustrial Hygienist Enc . SUH/bsm LAM 019506 ABS-000317 V`, "3 TA3LE 1 RESULTS OF PERSONAL AND PERIMETER MONITORING FOR AIRBORNE ASBESTOS (DU-2 \\ Shell Oil Company West Vacuum Flasher Furnace) Wood River, Illinois January 3, 1987 Sample #/Time Employee/Description Airborne Fiber Con centration (f/cc) 8-hour TWA (f/cc) WRMC 870103-1 0095-0225 0393-0515 WRMC 870103-E 0099-0226 WRMC 870103-7 0393-0515 WRMC 870103-3 0050-0ES5 0393-0515 WRMC 870103-9 0100-0520 WRMC 870103-5 0106-0521 WRMC 870103-6 0112- WRMC 070103-8 * Perimeter Abatement imately 9 P-39096 North of Area. Approx feet east of Perimeter Northwest Corner of Abatement Area, Pump Alley Perimeter South of Abatement Area. 9 Feet from East Furnace Blank 0.29 1 .0 0.31 0.039 <0.01 <0.01 Void 3 Fibers/ 100 Fields f/cc - fibers per cubic centimeter TWA = Time Weighted Average 0.10 0.26 0.01 LAM 019507 ABS-000318 Table 1 (continued) Sample obtained were blank corrected. Method of Collection; Airborne samples were collected with MSA Model G SKC 224-43, and Gilian HFS, 1 13A samplinq pumps. -This strumentation was calibrated before and after survey. Sampling media consisted of an - open-faced 25 mi 1 1 im.eter 0.8 micron mixed cellulose ester filter. in Method of Ana lysis: Samples were analyzed in accordance with NIOSH asbestos fibers in air procedures) NIOSH 7400 Method. LAM 019508 ABS-000319