Document LgROr92OXLqwaDj0gKE34a6r3

12-17-1993 17:42 .1 401.521 9408 NESS, M0TLEY/MARRAN8.LESSARD P.02 March 6, 1988 Robert R. Hatten, Esq. Patten, Wornom & Watkins Suite 105, 739 Thimble Shoals :3lvd. Newport News, VA 23606 Re: Mr. FJedler; Second Experiment Dear Mr. Hatten: Per your request, we conducted; the second round of asbestos fiber release experiments todaiy with Mr. Fiedler. A description of how the experiments were performed and the results observed follow. We were asked to perform three experiments on this day. We were to repeat the experiment iperformed on Crane material' 333 on February 27, 1988. Secondly, we were to perform two fiber release experiments on Gjarlock gasket material. We used a different light source,: I.e., the light from a 500 watt slide projector. Mr. Ambrose, who recorded the videotape of the experiments, arrived at the laboratory at 91:25 and Mr. Ftedler arrived at 10:00 a.m. on Sunday March 6, 1988. The first experiment was conducted on Crane sample number 333, the sample previously determined to contain 90? asbestos. The second and thfrid experiments were performed on Garlcck gasket materials numbered 7228 and 7021 . In each case, the sealed samples, a metal flange, a file, end a ball peen hammer were ptjaced Inside a glovebox. The use and operation of a giovebolx had been previously explained to Mr. Fiedler. Mr.I Fiedler manipulated the asbestos containing material linslde the glovebox In the same manner described In the earlier report of February 27, 1988. Mr. Fiedler used a hammer and if lie In the preparation of three gaskets. A light beam fjrom the slide projector light source described above was used as a light source. Light was directed through the space; Immediately below the location of filing. Light frdm falling material reflected; off airborne particulate matter. All experiments were j vIdeota ped. t 12-17-19S3 17:42 1 401 521 9408 , NESS.MOTLEY/MARRAN&LESSARD . . P.03 Hr. Hatten March 6, 1968 Page 2 Air samples were taken before land during the manipulation of each sample of asbestos containing material. A clean air sample was taken from the glovjebox before each experiment was begun. The clean air sampjles demonstrated that the glovebox was uncontaminated. The experimental samples were taken while the manipulation off the asbestos was taking place. The airborne conesntraifIon of asbestos within the glovebox while the manlpul attojn of asbestos took place Is set forth In the following tabjle. Substantial asbestos containing dust accumulated on! the walls and bottom of the glovebox during the course of jeach experiment. Samp Ie ID per cent asbestos Crane 333 Gar lock 7228 Garlock 7021 90* 90* 83* airborne fiber concentratI on (flbers/cc) with In glovebox 15.1 (f/cc) 2.2 0.6 If you have any questions, please feel free to call me. SIncereIy enc R. Leonard Vance, Ph.D. Laboratory Director 12-17-1993 17:43 1 401 521 9408 NESS. MOTT_EY/MARRAN&LESSARD. P.04 S/cAsheic/exs 1508 W. MAIN STREET RICHMOND. VA 23220 ASBESTOS |l DENT IFI CAT 1 ON REPORT CBY EPA INTERIM METHOD} C40 CFR 7p3,; SUBPT F, APP. Aj no. (804) 353-6778 CLIENT': ADDRESS: CITY/STATE/ZIP Robert R. Hatten, |;sq. LABORATORY N0:336-339 Patten, Wornom ACCOUNT NO. 0M-88-05 Newport News, Ya. DATE RECEIVED: 3/06/88 2360(i THE SAMPLE(S) SUBMITTED FOR ASBESTOS BULK ANALYSIS HAVE BEEN COMPLETED, THEY WERE ANALYZED BY POLARIZED L l(5HT MICROSCOPY WITH DISPERSION STAINING. 1. LABORATORY NO. FIELD l.D. no. 11. RESULTS: ASBESTOS PRESENT 111 . TYPE ASBESTOS (IF PRESENT) A. CHRYSOT UE SAMPLE 336 SAMPLE / 337 SAMPLE / 338 SAMPLE / 339 Gar|ock Gar 900 7021 Gar 7228 Gar 7021 (1/32"-) yes yes Y*s , yes 90$ 90$ 90$ 83$ B. AMOSITE C. CROCIDOUTE D. ANTHQPHYLLITE . FIBROUS TREMOLITE F. FIBROUS ACTINOLITE APPROXIMATE PER CENT ASBESTOS 90$ 90$ 90$ 05$ IV. ASSOCIATED FIBROUS MATERIALS A. CELLULOSE FIBER B. FIBROUS GLASS C. SYNTHETIC FIBER 10$ 10$ 10$ 15$ V. NONFIBROUS MATERIALS A. GYPSUM B. CALCITE C. SILICA VI. REMARKS ^DETECTION LIMIT} C< 1$ ASBESTOS] 4 . 12-17-1SS3 17:43 '. 1 401 521 9408 ** NESS. MOTLEV/MARRANSJ-ESSARD y. . . ' P.05 LABORATORY ANALYSIS REPORT AIHA/EPA ACCREDITED ASBESTOS FIBER COUNT BY NJOSH 7400 METHOD ACCOUNT: 0M-88-05 CLIENT: Robert R. Hatten AOORESS: Patten, Wornom lWatkins Newport News, YA 23606 . DATE C0LLECTED:3/06/88 OATE RECEIVED :3/06/88 DATE REPORTED .-3/06/88 CUS. PURCH. ORD. AIRBORNE FIBER CONCENTRATIONS INSiDE GLOVEBOX FIELD SCHN SAMPLE LAB NO. SAMPLE NO. TOTAL FIELDS COUNTED FLOW RATE l/mln FIBER COUNT PER ; F1 Eli.O Crane 333 333 40 3 2.875 Gar lock 331 7228 40 3 2.838 Gar lock 335 7021 100 3 0.31 TOTAL TIME SAMPLE COLL'D (min) 15 21 8 SAMPLE ACTUAL VOLUME EXPOSURE <15 (f/cc) 45 3.1 . * ' 63 2.2 24 0.6 ' MICROSCOPIC FIELD AREA (MM2): 0.00785 ANALYZED BY R REVIEWED BY R ABOUZAKI 2//&'% VANCE, Ph.O., LABOBATOI^Y DIRECTOR * 30 `d QdtfSS3-t'2NVdt)VW/A3_liOW' SS3N 90t?6 IBS T0fr I >:! 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