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PLAINTIFF'S EXHIBIT I A?. EVALUATION OF FCTEVIAL 0CCUF*!2NAL EXPOSURE TO AIRBORNE ASBESTOS FIBERS ENCOUNTERED DURING INSTALLATION AND REMOVAL OF ASBESTOS-CONTAINING GASKETS GARLCCF INC., PALMiRA, NEW YORK Gasket Type 604 NEILSON ASSOCIATES 7]9Phuni Run Wmt Chctttr, Pnasyhrtaia. 192A0 Pbor.{ (215) 793 1319 April 1, 1982 Gyy'ljuJ^s. Arthur Neil son, Industrial Hygienist --ZCjS^2L_ Lester Tripp, Industrial Hygienist NEELSON ASSOCIATES TABLE Of CONTENTS SUHiARY INTRODUCTION METHODS RESULTS & CONCLUSIONS APPENOIX 1 Computer Print-Out - Asbestos nbe" Concentration Page Wo. 1 2 3 8 9 ( SUMMARY + NEILSON ASSOCIATES SUMMARY Neilson Associates was retired by Garlock Inc. to evaluate potential occupational exposure to airborne asbestos fibers .during installation and removal of asbestos-containing gaskets and the associated cleaning of the recessed flange at thri- Palmyra, New Yo**k plant site. The results of this Investigation clearly indicate that an occupational exposure hazard does not exist. ( ( INTRODUCTION T NEILSON ASSOCIATES INTRODUCTION A study was conducted by Neil son Associates to evaluate potential occupational exposure to airborne asbestos fibers during Installation and removal procedures for asbestos-containing gaskets. Air samples, both area and breathing zone, were taken during this study at Garlock Inc., Palmyra, New York, on November 18, 1981, and February 11, 1982. ( ( METHODS ( I ( NEHSON ASSOCIATES METHODS Senegal All methods used for t*e co'lection and analysis cr samoles in this study are approved by OSHA, NIOSH, and/or AIHA. ' Sample Collection Collection Media - Particulate matter was collected on a type AA (mixed cellulose acetate and nitrate .5.) filter mounted in a three piece air monitoring filter holder. Sampling Pumps- Air samples were-taken by drawing a sample of the air under study through the collection media with a MSA Model G portable air pump (Mine Safety Appliances Company, Pittsturgn, PA). The air pumps were calibrated to a flow rate of 2.0 liters per rmute using a standard rotameter on November 18, 1981 and from 1.560 to 1.741 liters per minute using a primary standard (moving bubble technique) on February 11, S82. Area fl<r Samples (11-18-81)- Four (A) area a'ir samples were tanen in tne work area at the following distances from :<*e technician and testing equipment: a) Sampl Number586--located on working surface, 1 ft. from vice bj Sample'fiumber587--located to right of technician at a 3 ft. distance c) Sample Number588--located in *ront of-technician at a 6 ft. distance See Figure 1 ( NEELSON ASSOCIATES METHODS (Cont.) Sample 535 X Technician I work location ei~yre 1: Sampling locations Breathing Zone Samples (1M8-8I)- Breethinj zone samples were taken by placing sampling units on the Oarlock technician with the collection medium being placed as close to the breathing-zone^js was practical (on *.- lapel of technician). The data collected Ire representative of i.'-icr'-e asbestos fibers being breathed by the individual ,nder study. Jo- location of 9reathing Zone Sample," refer to Figure 1, Sample 535.) NEILSON ASSOCIATES TIT) HUUla (Cont.) Ares A)- Si~:'es (rll82) Three (3) area air samoles were ta<en in the work s-ea. . rigure 2.) . ___________________________ Sc-: Te 6P 101: Sample GP 102 e-ale SP 104 Figure 2: ia-c*in; Locations - Breathing Zghc Sample (2-1I-82)- The breathing zone sample was taken by placing the sampling unit on the Garlock technician with the collection medium being placed as close to the breathlng.zonc^as was practical -'on tre lacel *f technician;. "*e data collected'ere representative f * m -rvjya! jr-jer s:- ii-*- ':-jre'2, Ssrpif-jP NEILSON' ASSOCIATES METHODS (Cont.) Sample Aralvs^s < The quantification of the levels of airborne asbestos fibers was conducted using the KIOSK method. (PSCAM 239.) The above noted method for airborne asbestos fibers counts only the fibers present on a portion of the filter surface with the total number of fibers per filter being calculated, therefore the total count is sub ject to a statistical counting error which establishes the lower limit of detectability. This lower limit is based upon a fiber count of one (i) fiber in 100 randomly selected microscopic fields which is the maximum number of fields to be examined according to the method. When the ratio of the area examined to the total filter area is determined and this result is multiplied by the quantity of fibers found, the result is tne total fibers per filter. However, If no fibers are found, the result is presented as being less than one (<1) fiber. If the quantity of fibers found i.s <l, then the total fiber count calculated is tne established lower lirit :* detectability. General Conditions Gaskets were mounted on a set of flanges, one c* which has a groove which partfally conffnes the gasket. Steaa temperat.-e and pressure were non itched t`ie duration of the test. * < NEILSOK ASSOCIATES "'H't! HUUi> (Cont.) Visual Dscunef^.ta*^ie,, 4 Visual records c; me removal and cleaning process was Mde by color video recording. -7- ( RESULTS t CONCLUSIONS NEILSON ASSOCIATES RtAU.T'Sl lUAwLUilJIU A*total of nine (9) air samples were taken. Seven (7) of tnese samples were ares and two {2} were breaming rone samples. The number of fibers per filter was below the detectable limit (BOL) in all samples. Therefore, the concentration of asbestos was essentially zero (0} fibers per cubic centimeter. (This is zero (0) f of the TIY.) Refer to Appendix 1 - Data Reporting Sheet. The evaluation of potential occupational exposure to airborne asbestos fibers encountered during testing procedures for asbestos- containing gaskets clearly Indicate that an occupational exposure hazard does not exist. ' ( ( -3- Appendix NEHSON ASSOCIATES QUU.0CK INC.-PALHYIA *.T. Sample Nc. 585 t1/18/81 and 2/11/82 (0422) 8riehlnf coat aaapla " I.VXCBOLS . 20 2 12.OS 12.45 34 MO0O APPENDIX 1 0 0 384 art* Saplt - 0* VOUIXG tOftFACI-l fT.FIOM VXCI 12 2 12.09 12.43 34 MOW 0 00 587 Aril Saapla - 3 FT TO RIGHT Of TEST TtCfWICU.V 22 12.09 12.43 34 MOW 0 o .} s Area Saapla - 4 FT. XX FRONT OP ISST TICKS 10 UN 12 12.09 12.43 34 MOW 0 00 S89 Art* Saapla - 4 FT. ttOK TXST nSCHICXAN-OM TOP OP CA81MIT 10 2____ 12.09 _ 12.43_ _34 _ _ MOW _ _ Q. _ _ . . _ Q.______ a 0422-CP-101 Arta Saapla - ---- 19 1.944 14.31 13.07 34 49984 0 0Q 6**2 :-cp-1:2 Ara Saapla - -- 11 t.): 14.31 13.07 34 73812 0*.22-Cr-l*3 3rochlr.f soat aaapla - Jla Af Milt 20 1.919 14.27-15.07 40 74740 J t 0**22-CP-l0A Art* Saapla - 21 2.007 14.31 15.07 36 72232 0 * ^ 1 j i l