Document kaEo8n9216YwpDdd1X9mJvZ00

THE ACTUAL CONTRIBUTION OF AIRBORNE ASBESTOS FIBERS FROM REMOVAL AND INSTALLATION OF' ASBESTOS PACKING FROM VALVES ' CARL A. MANGOLD CERTIFIED INDUSTRIAL HYGIENIST ENVIRONMENTAL CONTROL SCIENCES, INC. BELLEVUE, WASHINGTON, 98008 AND ROBERT L. GAY, PhD CONSULTANT 2505 N.W. 83rd PLACE PORTLAND, OREGON, 97229 MAY 1991 ABSTRACT Asbestos packing in the form of round or square material of various sizes is fitted around the stem of steam and water valves. The packing is compressed with a gland nut to squeeze against the stem and form a seal. The stem can be turned to open or close the valve, yet the packing around the stem keeps a seal, thus preventing leaks.-When valves are serviced, overhauled, or if leaks develop the valve packing is removed and new materials Installed. This can be done in shops or with the valve in place. When the asbestos packing was removed, and new materials were installed there would be a potential for the release of some asbestos fibers into the air at the point of work. The amounts of asbestos released to the breathing zone of the worker and surrounding work area was negligible because of the encapsulated nature of the packing, the small amount of packing involved, the short period of time required to process the material, and the infrequent nature of the changes. The valve packings are removed and reinstalled only when there is a requirement such as a leak, or a major valve overhaul. Because the release potential from asbestos packing Is so low, .any other asbestos contamination in the area, such as piping insulation, would obscure any attempts at actual measurement of the contribution from the packings alone. And, 1 the measurements must reflect the 8 hour time-weighted average in order to compare to the Federal or State standards for asbestos exposure. Several dozen medium sized (3 inch pipe diameter or larger) valves were obtained that still contained the old packings for examination. They were cleaned of any outer surface contamination for testing in a clean enclosure measuring 20 feet x 20 feet x 10 feet high with no ventilation. The old packing was .removed from each of eight of the valves followed by replacement with new Garlock, Znc. valve packing using traditional methods. Air samples were collected in the breathing zone of the operators, Carl A. Mangold, C1H, and Robert L. Gay, PhD who processed the valves. Environmental air samples were collected at points of the compass at 5 feet and 10 feet away from the operators to estimate by-stander exposures of persons who may be nearby when such packing changes occur. At each environmental sample station, a pair of samples were collected at head height (one for phase contrast microscopy [PCM], and one for transmission electron microscopy [TEM], during the continuous removal and"installation processes at the center of the room. ' The results showed that the PCM breathing zone concentration averaged .014 fibers/cc for Mr. Mangold, and .009 fibers/cc for Dr. Gay at the work bench which represents an 8 hour time weighted average exposure. The average of the PCM concentrations at the 4 points of 2 the coapass 5 feet from the work bench wa* .005 fibers/cc. The average of the PCM concentrations at the 4 points of the coapass 10 feet away was .004 fibers/cc. The scanning transmission electron microscopy results for fibers greater than 5 aicroaeters in length at the points 5 feet froa the work table was .008 fibers/cc, and at 10 feet away averaged .009 fibers/cc. The results show remarkably good agreement, and are uniformly low even when old packing is removed' from the valve stem, and new packing cut and Inserted during the test for one valve after another involving eight valves. The current Occupational Safety and Health Administration (OSHA) permissible exposure limit defined in the Federal standard for asbestos (29 CFR 1926.58, 20 June 1986} is .2 fibers/cc, > 5 um in length, at a 3:1 aspect ratio using phase contract microscopy at 400X, for an 8 hour time-weighted average work day. A 1988 amendment (September 14, 1988) allows a peak exposure of 1 fiber/cc for any 30 minute period during a work day. ~ The Environmental Protection Agency (EPA) regulations for control of asbestos in schools (AHERA Regulations at 40 CFR, Part "763, October 1987) allows habitation of the buildings after an asbestos removal if the airborne concentrations do not exceed .01 fibers/cc. 3. 4* The Environmental Protection Agency (ZPA) regulations at 40 CFR, Part 61, Subpart M - National Emission Standards for Hazardous Air Pollutants; Asbestos NESHA? Revision (November 20, 1990} recognizes the low release potential of asbestos packing materials. Asbestos packing is listed as a Category I non-friable asbestos containing material that ----- "even when broken or damaged would not release significant amounts of asbestos fibers" Comparatively, the concentrations of asbestos fibers released and measured in the breathing zone of workers processing the valve packing, and for by-standers 5 and 10 feet way are not significant; they are many times less than the permissible exposure limits defined above and approach the natural ambient levels found in the environment. 4 TABLE OP COHTEKTS ASSTEAC7 1-4 TA3LE OF CONTENTS 5 BACKGROUND ' 6 ENVIRONMENTAL EXPOSURES . 10 VOLUME OF ASBESTOS USED IN SHIPYARDS 11 EXPOSURES OF THE CONSTRUCTION ANDSHIPYARD TRADES 12 CURRENT ALLOWABLE LEVELS OFEXPOSURE TOASBESTOS 13 EXPERIMENTAL DESIGN 15 RESULTS AND CONCLUSIONS . 22 REFERENCES 25 ENCLOSURES 29 REF: G-PACKING 5 BACKGROUND; Asbestos is one of the most plentiful, useful, and cheao industrial minerals used in the United States over the past 90 years. Because of its high thermal stability and resistance to corrosion it has appeared in more than 3,000 manufactured goods in the United States. Estimates are that at least 30,000,000 tons have been-used in construction and manufacturing since the year 1900. This commercial use of asbestos has led to the exposure of millions of Americans at levels that may have a significant Impact on their health. Large numbers of Americans are also exposed to asbestos in the non-oceupational environment, where it oceurs not only from Industrial sources but naturally in the soil, air and water. Most environmental exposures occur in cities from industrial complexes, from soil high in asbestos content, in drinking, ground and surface waters, and in the air from those sources. ' - Therefore, most Americans receive some regular low level asbestos exposure throughout their lifetimes. In 1960, Dr. Andrew Churg (1) determined that most city dwellers retain a substantial amount of respirable asbestos fibers in their lungs in some state of residence and clearance. Sr. Churg documented that retained asbestos fibers can number in the millions of asbestos fibers just from living and working in the citi.es where low level exposure to airborne asbestos is commonplace. The concerns, abou.t- the-rcrle of asbestos in the 6 /* development of the lung disease: Asbestosis, began in the United States in the 1930's and progressed slowly as more was learned about the pathogenesis of the disease. Most of the attention was centered on disabled workers with obvious workrelated exposure patterns involving exposure to raw asbestos fibers used commercially. There were three main commercial types of asbestos used: Chrysotllet Amosite end CrocSdolite. Few, if any, controls were followed so the time and intensity factors led to elevated dose levels that precipitated some degree of asbestosis among the workers. This continued until the 1560's when signs of asbestosrelated cancers began to reshape thinking and action about the occupational exposures to asbestos. Today, the exposures of workers to asbestos has been markedly reduced through voluntary controls and legislation that led to the first Federal asbestos standards in 1972. For the first time standards with the force of law were uniformly administered throughout the United States through the Occupational Safety and Health Administration (OSHA). Since that time the permissible exposure levels of asbestos have been reduced through regulatory processes in the United States. Zn 1964, Marr (2) concluded that asbestos-related disease was an Important problem among insulators working in U.S. Naval shipyards. His assumptions were correct; however, the methods of assessment weakened the conclusions. In 1965, pioneer work was begun at J'uget Sound Naval Shipyard 7 culminating in conclusive report of exposure levels and medical findings by Mangold, Beckett and Bessmer (3,4). Most of the attention.was directed at the products and operations that produced high level exposures to asbestos workers and associated trades, and because of the large volumes of asbestos products used annually in the shipyard. The conclusions were that the Threshold Limit Value (TLV) was still too high at 5 millions of particles per'cubic foot (M?PC?), equivalent to about 50 fibers per cubic centimeter of air, and that intermittent peak exposures were far more important than previously recognized. Both of these conclusions have been corroborated by more recent literature. About 1964, Selikoff (7) and a team of scientists published a protracted study of asbestos-related diseases which defined the latent effects of exposure and probable dose-response relationship based upon time and Intensity of exposure. The model they used was based on high level exposures and was extrapolated to all lower levels of exposure. Other scientists such as J.E. Craighead, et.al (8), M.R. Becklake (9) and W.J. Nicholson (10) questioned the validity of the straight line model because of the uncertainty In latency factors and ill-defined responses to low level exposures. Br. Nicholson (10) further observed that the long lapse time from exposure to the onset of asbestoses', or asbestos-related cancers, creates difficulties in attempting to establish the true dose-response relationship.- He noted-that-the diseases detected in later 8 years were from exposures of decades past when few measurements of asbestos concentrations in the breathing zone of workers were made, exposures were high, and controls were few. Since that time Dr. Churg (1) has described relatively high levels of asbestos fibers found in the lungs of city dwellers who were not occupationally exposed and died of causes not related to asbestos. This substantial exposure from man-made and natural sources averages about 160,000,000 fibers per whole lung. This suggests a sigmoid or "S" shaped dose-response curve indicating a lower no effect level at low levels of exposures. Otherwise, millions of Americans receiving such daily exposures to asbestos should show significant rates of asbestos-related disease. There is no epidemiological evidence that they do. Therefore, the assumptions that all levels of exposure have a proportionate risk (using the straight line model for dose response) is extreme and without proof because it is based upon extrapolation and assumption. The Occupational Safety and Health Administration (OSHA) used those conservative assumptions in the 1972 Federal regulations governing the occupational exposure to asbestos (11) and in subsequent changes to those regulations. In addition, an assumption was made that all forms of asbestos (Chrysotile, Amcslte, Crocldolite, Actinolite, Anthophyllite, and Tremolite) produce asbestos-related disease at the same level of exposure. More recent studies in 1988-by Dr. Churg 9 and others (12, 13) shew that the potency of the various forms of asbestos are different related to the cancer producing effects. However, OSHA and the SPA treat the various forms alike. Other non-regulatory bodies such as the American Conference of Governmental Industrial Hygienists recommend different Threshold Limit Values for the various forms of asbestos. 2. EKVIROKKENTAL EXPOSURES: ' The environmental exposure to the naturally occurring ferms of asbestos in the United States is common, and can be elevated in some localities. Chrysotdle .is common to the ambient air in the environment especially near the mountainous regions of the United States. There are 22 states with major asbestos mineral outcroppings that contribute substantial amounts of asbestos to the air and water from the eroded soil. Many major cities, such as Seattle, Washington, use drinking water sources that contains 400,000 to 1,000,000 asbestos fibers per liter of water. The EPA's study on Ambient Water Quality Criteria for Asbestos in 1980 showed that the general population receives, substantial exposures to asbestos from-these natural sources. Because the naturally occurring asbestos, mainly chrysotile, is so wide spread on the West and East coasts and alonjj 'the border with Canada, millions of Americans receive dally substantial exposures to asbestos from birth. It is not. uncommon to--find-airborne concentrations of 10 A asbestos in communities at levels of about .002 fibers/cc of air, rising to occasional peaks of .02 fiber/cc or more. The background levels of naturally occurring asbestos in air is so prevalent that the SPA properly took into account the ambient airborne asbestos background influence for clearanca of school buildings following an asbestos removal project (14). It is not uncommon to find outside airborne concentrations of asbestos exceeding those inside the school buildings where asbestos minerals exist in high concentrations in the soil and water. The current E?A criteria for clearance of a school building after a removal project is .01 fibers/cc by transmission electron microscopy for total fibers. At that level, the EPA considers the building suitable for occupancy. Doll and Peto (IS), Weill and Hughes (16), and Hughes and Weill (17) all have made predictions of the risk of environmental exposures at those levels. Doll and Peto predict one excess death from_environmental exposure in a year in the United Kingdom. Such a low level of risk at the known environmental levels of exposure in the United States and the United Kingdom accounts for the fact that the general populations do not demonstrate asbestos-related diseases at those levels. 3. VOLUME 'OP ASBESTOS USED IK SHIPYARDS; The large volume of asbestos products used in U.S. Naval and commercial shipyards is important, especially in 11 * the war years during the 1540's, iSSO's, and 1960's. The Fleisher-Drinker report on Naval and contract shipyards published in 1946 shows that in these industrial communities about 100,000 to 500,000 pounds of asbestos products would be used each month for new ship construction alone (IS). The report made no mention of the'volume of asbestos removed prior to overhaul or renovation of-vessels. The amount of asbestos materials used set the conditions for high levels of exposure to workers for the working conditions during that era. About 95X of the products by weight were amosite pads or blankets, loose amosite, magnesia block insulation, asbestos cements and asbestos cloth. Tons of the materials were loose, easily broken, crumbled, and handled directly by workers. The potential for high level exposure, especially peak exposures is evident. Few effective control measures were in place at that time because the risk from high level exposures over many years was not recognized because of the long latency periods to develop asbestos-related diseases. 4 EXPOSURES OF THE CONSTRUCTION AND SHIPYARD TRADES; There are several studies that attempted to define the occupational exposure of workers in the construction and shipyard trades in the 1960's. They constitute a cross section of the American experience at controlling high level occupational exposures in industry. In 1970, Mangold, Beckett and Bessmer (3,4) published a report on asbestos exposures 'at Puget Sound Naval Shipyard 12 showing that 21* of the asbestos workers showed pulmonary abnormalities. They concluded that the current Threshold Limit Value (TLV) of 5 M??CF was too high, that peak exposures were especially important, and that changes of work practices were required. In 1968, W.C. Cooper and L. Baltzer (19) published a similar study of construction workers in the San Francisco Bay area. About 25* of the construction workers handling asbestos products and receiving high level exposure showed X- ray changes to the lungs. They also concluded that the TLV was too high and needed to be reduced. Zn 1971, Gaensler, et.al. (20) published a study of - exposures and medical findings in a private shipyard on the East coast. He concluded that exposures were too high and that the TLV should be reduced. He noted that conditions had not changed in about 20 years. A comparison of the asbestos exposures by job are contained in the report. These three studies show that large volumes of asbestos were used during those periods and that high levels of exposure were commonplace for certain trades and workplaces. The asbestos exposure concentrations were probably hundreds to thousands of times greater than background levels, or environmental exposures. Such substantial exposures could probably account for most of the subsequent asbestos-related diseases, following long latency periods. 5. CURRENT ALLOWABLE LEVELS'OF EXPOSPRE TO ASBESTOS: 13 * In 1946, the American Conference of Governmental Industrial Hygienists (ACGIH) adopted a Threshold Limit Value (TLV) for asbestos of 5 Millions of Particles per Cubic root (MPPCF) of air samples for an 8 hour time-weighted average (TWA) workday (21). Years later, comparisons to the filter counting method showed 5 MPPCF was' roughly equivalent to so fibers/cc. It remained as a recommendation until 1969, when it was reduced to 2 MPPCF or equivalent to 12 fibers/cc. The ACGIH still recommends different TLVs for the various forms of commercial asbestos: as follows. A. Chrysotlle: 2 fibers/cc, 8 hr TWA B. Amosite: .5 fibers/cc, 8 hr TWA C. Crocidolite: .2 fibers/cc, 8 hr TWA D. Other Types 2 fibers/cc, 8 hr TWA The current Occupational Safety and Health Administration (OSHA) Federal standard for occupational exposure to asbestos is .2 fibers/cc, >5 urn in length, for all forms of asbestos used commercially. OSKA makes no distinction between the types of asbestos. The regulation specifies the use of air sampling and laboratory analyses by phase contract microscopy at 400 X magnification (11). The EPA now regulates school clearances following an asbestos, removal project to .01 fibers/cc as determined by phase contrast microscopy (PCM) or transmission electron microscopy (TEM),-a preciser'method that measures all asbestos 14 fibers present (14). It is apparent that there is a distinct difference between the control strategies adopted by the regulatory agencies and the independent recommendations offered by the ACGIH based upon specific studies 'and the toxicity of the various forms of asbestos. JEL EXPERIMENTAL DESIGN FOR ASBESTOS PACKING; In many of the past articles on asbestos exposure the products used in low volumes and these that were encapsulated were not considered because of the small contribution to the overall exposure pattern (3,4) of those handling the products. Since many asbestos insulation products are used together or in conjunction with each other, the measurement of the contribution of m. single product is difficult. In the case of products with a low release potential, the airborne asbestos fiber measurements will be dominated by the relatively high fiber release from the more friable products (3,4,19,20). Asbestos packing is an encapsulated product containing asbestos and elastomers and is round or square in shape. The product is used to encircle the shaft of a valve and be compressed by a special compression nut to squeeze the packing;, thus making a fluid tight seal (See Photograph at Enclosure # 6^ The volume of valve packing used in industry, compared to other-asbestos products is relatively small. It 15 is because of the special application (it is not used for insulation), and the infrequent need to replace it. When a valve stem begins to leak steam, or fluids, the packing gland may need to be tightened to increase the compression seal, or the packing may need replacement. The packing can be Installed while the valve is in place, or it may be replaced routinely when the valves are removed for reconditioning or overhaul. : The SPA published a revision to the /fatJon*1 Emission Standards for Hazardous Air Pollutants: Asbestos HESHAP Revision; Final Rule at 40 CFR, Part 61, Subpart M on November 20, 1990 (22). Asbestos packing materials used for valves are specifically described and designated in Category I - Non-Friable Asbestos Containing Material which "even when broken or damaced, they would not release significant amounts of asbestos fibers". This is a recognition that encapsulated products do not release significant amounts of asbestos on handling or processing. This report describes an experiment designed to determine the actual amount of asbestos released from the removal and installation of asbestos valve packing, in the absence of high environmental or other interfering sources of asbestos. - Two. dto2en medium sized valves (3 inch line or larger) were obtained from salvage yards, especially those where the history of origin was-known such as the Seattle Steam Plant. 16 * * They were cleaned with warm soapy water to remove any residual asbestos materials clinging to the body of the valve. No pacleing nuts were removed or the packing in place altered in any way. The intent was to be able to remove the old packing materials in much the same way as a worker may remove it. ' Garlock, Inc. brand asbestos braided packing Material Styles 127 and 733 were obtained from the company, and the composition determined to be the same as that used more than thirty years ago in the late 1950's. The intent was to have a supply of various types of new asbestos braided packing materials, to replace that which would be removed during the testing, which was similar in composition to common valve packing produced by the Garlock, Inc for decades. The information is contained at Enclosure A clean room was needed for the testing, to minimize contamination from any other sources of asbestos, and to accurately measure the low level release of ehrysotlle asbestos fibers expected from the_handling of the old and new packing materials. Since the emissions were expected to be near the limit of detection of phase contrast microscopy, special precautions were taken to control potential asbestos contamination or other fibers that may Interfere with the testing. A-large facility was leased in Seattle, Washington and a clean enclosure was constructed inside in which the ambient and background"airborne asbestos levels as measured 17 by electron microscopy was .002 fibers/ec for fibers greater than 5 micrometers in length, or .005 Structures/cc for all sizes of asbestos present. This background is sufficiently low to conduct the tests because: 1. the natural asbestos background in Seattle is near _ that level. - 2. it is at or below the asbes.tos levels expected from the testing of the old and new valve packings.'. Inside the building, an enclosure of polyethylene plastic was constructed that measured 20 feet by 20 feet and 10 feet high, or 4,000 cubie feet. This represents a small compartment or room much l.xe is often found aboard ship or in some work places which may be occupied by a bystander to valve stem packing removal or installation. The ceiling, walls, and floor were covered with the polyethylene plastic and all the edges were sealed. The only entry was a specially designed flap door that would remain sealed.during the testing. No ventilation was provided to the enclosure so that all fibers released during the testing would remain inside the enclosure. A clean work bench was placed in the center of the enclosure and the valves placed beside the bench so that one valve after another could be processed by removal of the old packing and installation of the new. Personal samplers were worn by both personnel at the bench during the -packing operations. "These sampled the IB airborne asbestos fibers in the breathing zone for subsequent analysis by phase contrast microscopy, as defined in the osha asbestos standard (11). ' Sampler stations were also located 5 and 10 feet away from the work bench, at head height, in the North, South, East and West directions to simulate the exposure of a bystander. Each sample station had .a cassette for phase contrast microscopy and one for scanning electron microscopy. Air was drawn through the special filters in the cassettes by electrically operated high volume air samplers. The volumes of air sampled at each station were measured by recording the flow rates (Liters per Minute) with a Class A rotometer and recording the amount of time the samples were collected. All sample cassettes were taken from the same Lot number from the box provided by the manufacturer. Enclosure 2 shows the location of the samplers to record by-stander exposure in the plastic enclosure. . Personal samples were collected in the breathing zone of each of the two operators who remained in the room during the entire processing event. Eight samples were collected at the environmental stations; four at 5 feet and 4 at 10 feet from the beneh. Blanks were collected for quality assurance of the data. All were analyzed by phase contrast microscopy (PCM). Eight other samples were collected at the environmental stations for analysis by scanning transmission electron microscopy (STEM) for. comparison to the PCM results. 19 Personnel wore disposable plastic impregnated protective clothing (TYVEC) to control the potential release of non asbestos fibers from street clothing and dust from shoes which could Interfere with the low level measurements. Eight valves were processed one by one on the bench by the two operators over a continuous 4.4 to 4.S'.hour period. The valves were disassembled, and the old packing removed. Then new packing was measured, cut and Installed in the valve. This process was continued for more than four hours to develop enough data to make calculations for 8 hour timeweighted average exposures. Following the testing, the sample cassettes were removed and delivered to HAZTOX, Inc., Seattle, Washington, a NVL? certified asbestos analytical laboratory. At HAZTOX, Inc. all PCM samples were analyzed according to Appendix A of the Federal Asbestos Standard (NIOSH) 7400 A. In addition all PCM samples were counted by two different analysts and the results reported separately. The results were then averaged for both the personal and by stander exposures. The results of the two analyses are found at Enclosure # 3. The sample cassettes for the scanning electron microscopy (STEM) were sent to ESSTEK, Inc., Wheatridge (Denver), Colorado, a .qualified laboratory for "analysis of 20 asbestos samples by electron microscopy. The letter of transmission and the results of the analyses are at Enclosure ESSTEK's laboratory qualifications are listed as Enclosure # 5^ The electron microscopy results were compared to, and corroborated, the phase contrast microscopy results. Only the phase contrast microscopy results can be compared to the permissible exposure limits found in the Federal asbestos standard. The PCM analysis may count non-asbestos fibers that may be present. But the STEM method is highly specific. It can determine all types of structures and fibers present, identify the type of fiber, has a very low limit of detection, and can be arranged to provide data similar to the PCM method for direct comparison. The EPA published two volumes that uses such comparative methodologies. They are the Superfund Method for Determination of Asbestos in Ambient Air: Part 1 -Method, and Part 2 - Technical Background (See ref 23). In this study, PCM and STEM samples collected at each by-stander sample location at the same time and filtered about the same volume of air so they could be compared in the data analysis. This provided two separate determinations for two specific methods at the same sample location to give a high degree of confidence that each result was comparative and reflected conditions in the test enclosure. 21 <* 7^ RESULTS AND CONCLUSIONS: The removal of old asbestos packing from valves and installing new packing material of the same type used 30 years ago typifies the operations described by pipe fitters, machinists, maintenance mechanics and other tradesmen about how the valve packing was removed and replaced. This test of asbestos release .from old and new valve packing was conducted in a clean unventilated enclosure, in order to minimize the Interference from natural or extraneous asbestos fibers or other types of fibrous dusts. This also represented a closed work space such as a ship's compartment, boiler room, or other work locations. Because the airborne, asbestos concentrations released are so low, background asbestos levels Inside the enclosure must be at or below the expected release levels. The background levels sampled before the operations began were .062 fibers/cc by Scanning transmission Electron Microscopy comparable to the PCM data, and .005 Structures/cc for all sizes of asbestos present. Analyses of the breathing zone samples of the two operators at the bench averaged .014 flbers/cc for Mr. Mangold, and .009 fibers/cc for Dr. Gay. These concentrations represent the occupational exposure of workers removing the packing from old valves, and replacing It with new packing in an enclosed, unventilated work space. The 4 to 4.5 hour test period was sufficient to represent an 8 hour time-weighted average exposure it that work rate. - -~ 22 The PCM data were compared to the current Permissible Exposure Limit (PEL) in the Federal standard for an eight hour time-weighted average asbestos exposure of .2 fibers/cc, >5 urn in length, with a 3:1 aspect ratio, as determined by phase contrast microscopy at 400X. The OSHA regulation embraces the National Institute for Occupational Health (NZOSH) method * 7400, revision # 3 in the Appendix A of the standard. . The personal exposure patterns of the workers removing or Installing asbestos containing valve packing were 14 to 22 times less than the OSHA PEL of .2 fibers/cc, B hr TWA. The PCM samples 5 feet away from the bench averaged .005 fibers/cc for all four sample stations at the North, South, East and West locations. This represents a bystander exposure 5 feet from two workers removing and installing packing on an average of 2 valves per hour. . The PCM samples at 10 feet away at the four points averaged .004 fibers/cc. These values are 40 to 50 times less than the Federal standard. The Scanning Transmission Electron Microscopy (STEM) used to corroborate the by-stander PCM results for fibers greater than 5 um in length as defined in the standard averaged .008 fibers/cc at 5 feet at the four points, and .009 fibers/cc at 10 feet a.t the four points. The values 23 validate the range of concentrations collected by PCM and compared to the Federal standard. It is not uncommon for the STEM data to be higher than the PCM data because of the precise analysis offered by electron microscopy. However, it may only be used as a comparison since there is no occupational health standard using electron microscopy. 24 8. REFERENCES; 1. A. Churg and M. Warnock, "Asbestos in the General Population", Aa. Rev. Resp. Disease., Vol 122 (1980) 2. W.T. Marr, "Asbestos Exposure During Naval Vessel Overhaul", An. Indust. Hyg. J. 25:264 (May-June 1964) 3. C.A. Mangold, R.R. Beckett, D.J. Bessaer, "Asbestos Exposure and Pulmonary X-Ray Changes to Pipe Coverers and Insulators at Puget Sound Naval Shipyard", PSNS, Dept or Navy, Bremerton, Washington, (August 1968) 4. C.A. Mangold, R.R. Beckett, D.J. Bessaer, "Asbestos Exposure and Control at Puget Sound Naval Shipyard", U.S. Dept, of Navy (May 1970) (Official U.S. Navy Document) 5. I.J. Sellkoff, J. Churg, E.C. Haaaond, "Asbestos Exposure and Neoplasia", JAMA 188:22 (1964) 6. I.J. Sellkoff, J. Churg, E.C. Hammond, "Relation Between Exposure to Asbestos and Mesothelioma", N. Eng. J. Med. 272:560-565 (1965) 7. .X-'J* Sellkoff, MD., "Disability Compensation for Asbestos Associated Disease in the United States", Env. Sci Lab, Mt. Sinai Hospital, City University, NewYork (Report to 25 U.S. Dept, of Labor (June 1982) 8. J.E. Craighead, 3.T. Mossman, "The Pathogenesis of Asbestos Associated Diseases", N. Eng J. Med., 306 (June 17, 1982) * 9. M.R. Becklake, "Exposure to- Asbestos and Human Disease", N. Eng. J. Med., 3C6 (June 17, 1982)'. editorial 10. W.J. Nicholson, A.M. Danger, I.J. Selikoff, "Epidemiological Evidence on Asbestos", proceedings of a workshop on Asbestos Definitions and Measurement Methods. (July 1977), Gaithersburg-, Md, O.S. Dept Commerce Publication # 506 (Nov 1978) 11. Federal Asbestos Standard: 29 CFR 1910.1001 and 1926.58; Occupational Exposure to Asbestos, Tremollte, Anthophyllite and Actlnolite, Final Rules (June 20, 1986) and amended (Sept 14, 1988). 12. Dr. Andrew Churg, "Chrysotlle, Tremollte and Malignant Mesothelioma in Man", Chest 93 (3): 621:628 (1988) 13. A. Churg and L. De Paoli, "Clearance of Chrysotile Asbestos., from the Human Lung", Experimental Lung Research 14 (5): 567-574 (1988) 26 14. Environmental Protection Agency: 40 CFR, Part 762, Asbestos Containing Materials in Schools; Pinal Rule and Notice (Oct 30, 1987) as amended. 15. R. Ooll and J. Peto, "Asbestos; Effects on Health of Exposure to Asbestos", London, Her Magesty's Stationery Office (1986) 16. H. Weill and J. Hughes, "Asbestos as a Public Health Risk: Disease and Policy", Ann. Rev. Pub. Health, 7 (1986) 17. J. Hughes and H. Weill, "Asbestos Exposure: Quantitative Assessment of Risk", Am. Rev. Resp. Dls. (1986) 18. W.E. Fleisher, F.J. Viles, R.L. Gade and Phillip Drinker, "A Health Survey of Pipe Covering Operations in Constructing Naval Vessels", J. Znd. Hyg. & Tox. 29:9 (Jan 1946) and the 1945 unpublished data. 19. J.L. Baltzer and W. Clark Cooper, MD, "The Work Environment of Insulating Workers", Am. Indust. Hyg. Assoc. J. 29:222 (May-June 1968) 20. R.L.H. Murphy Jr., MD, S. Ferris, W. Burgess, J. Worcester,-E.A. Gaensler, MD., "Effects of Low Concentrations of Asbestos: Clinical, Environmental, Radiological, and Epidemiological Observations, in Shipyard Pipe Coverers and 27 controls", N. Sr.g. J. Med., 23: 285 (Dec 1971) 21. American Conference of Governmental Industrial Hygienists, Threshold Limit Values (1946 to 1991), 6500 Glenway Avenue, 31dg D-7, Cincinnati, Ohio, 45211 22. Environmental Protection Agency, national Emission Standards for Hazardous Air Pollutants; Asbestos NESKA? Revision; Final Rule (40 ?R Part 61, November 20, 1990) 23. Environmental Protection Agency, Environmental Assessment Manual; Superfund Method for Determination of Asbestos in Ambient Air: Part 1 - Method and Part 2 - Technical Background Document (Manuals EPA/540/2-90/005 a and b) (May 1990) 23 10. ENCLOSURES: 1. GARLOCK, INC. PACKING MATERIALS. 2. SKETCH 0? ENCLOSURE AND PLACEMENT 0? SAMPLERS 3. PHASE CONTRAST MICROSCOPY (PCM) RESULTS. 4. SCANNING TRANSMISSION ELECTRON MICROSCOPY RESULTS. 5. ESSTEK, INC. LA30RAT0RY QUALIFICATIONS. 6. PHOTOGRAPH OF PACKING IN A SPLIT VALVE. 29 GARLOCK, ISC, PALMYRA, NEW YORK BRAIDED ASBESTOS PACKING FOR VALVE STEMS STYLE f 127 (1) STYLE * 733 (2) 3/16 1/4" 3/8" 3/16' ` 1/4" 3/8" 1 ' (1) Style # 127 has been made without significant change since the 1950's; Also, known as Style # 5901 to comply with U.S. Government specifications. Good for applications for valve stems to 4000 psi and 1200F. : ` (2) Style I 733 has been made without significant change since the late 1940's. It is good for valve, stems and rotary shafts for low and medium pressure applicatioz up to 500F. ' (3) The outer surfaces are coated with a graphite powder for lubrication of the surfaces against the valve stem and prevent sticking. It levels the surface and provides greater sealing contact. . ' EKCLOSllRI(l) Sc LOCATION 0? SAMPLE STATIONS IN THE ASBESTOS FIBER FREE ENCLOSURE IAH*V ' AUP 10 10 V # 5w # ' 5S # 5H m tSNCH *. h 5E its* * ... Enclosure Bright 10' 0 - * l&E. EICLOSUREfc) ' .\ntrc!!ed Solutions AIR SAMPLE ANALYSIS REPORT CLIENT: E.&.S., Inc. 3033 noth PI. S.E. 3ellevue, WA 9B008 PROviCT: Valve Packing, Garlock, Inc REPORT #: 01-151273 REPORT CATE: 2-01-51 RAGS 1 of 3 CATS RECEIVED: 1-30-51 PO #: None Given CLIENT SAMPLE ID ESS ID SAMPLE SAMPLE DATS VOL (L) PI3ER FIELD 3LANX COT FIBERS SXGRND COUNT COUNT /100 FLDS PER CC XAT ** P-3LX-1 191273 1-29-91 0 PSE-3 191274 1-29-91 1219 P5N-1 191275 1-29-91 2582 PSE-2 191276 1-29-91 2803 PSS-3 191277 1-29-91 2470 P5W-4 191278 1-29-91 3550 P10N-5 ,, 191279 1-29-91 2767 PICE-6 191280 1-29-91 3484 P1CS-7 191281 1-29-91 2527 P10W-8 191282 1-29-91 2594 PP-17 191283 1-29-91 450 PP-18 191284 1-29-91 540 PLA3 13-19 191285 1-29-91 0 SAMPLE LOCATIONS: Seryl# #191273 was taken as a field blank. 2.0 49.0 35.0 20.0 29.0 26.0 16.0 12.5' 25.0 28.5 6.0 10.0 0.0 100 100 100 100 100 100 100 100 100 100 100 100 100 N/A BLANK 1.00 0.019 1.00 0.006 1.00 0.003 1.00 0.006 1.00 0.003 1.00 0.003 1.00 0.002 1.00 0.005 1.00 0.005 1.00 < 0.011 1.00 < 0.009 N/A BLANK M H H H H M H M u - T SEATTLE OtviSlON 12822 GATcWAT OR. SEATTLE. WASHINGTON 98168 " i.206-2*3-6573 FAX 206-2**-37l5 EHCL0SURE(3)A 32. AIR SAMPLE ANALYSIS REPORT CLIENT: 2.H.S., Inc. PROJECT: Valve Packing, Garloek, Inc. REPORT it: 01-191273 RAGS 2 of 3 SAMPLE LOCATIONS (continued): Sample *191274 was a background sample. Sample *191275 was by byst&ndsr, 5' north. 3amp *191276 was by bystander, 5', aest. Sample *191277 was by bystandar, 5', south. - Sample *191276 was by bystandar, 5' wast. ` Serbia *191279 was by bystandar, 10', north. Casple *191280 was by bystandar, 10', aast. ' Sample *191281 was by bystander, 10', south. Sample *191282 was by bystandar, 10' wast. Sample *191283 was a personal sample on Carl Mangold. Sample *191284 was a personal sample on Bob Gay. Sample *191285 was taken as a field blank. The samples .analyzed in this report ware provided by third parties not subject to control by KA2T0X, Inc. or any of HA2T0X, Inc.'s affiliates. Consequently, the results presented represent microscopic examinations in HAZTOX, Inc. laboratory facilities and we sake no representation as to sample collection techniques or procedures. Analysis was performed using phase contrast microscopy under the guidelines of NIOSH method *7400-A. " A minimum of ten fibers per 100 fields is needed for reliable quantification. Samples with less than 10 fibers per 100 fields are reported as less than (<} the quantification limit. ' Amounts of non-fibrous material are determined using charts for estimating composition from the Journal of Sedimentary Petrology (v. 25, pp. 229-234, 1955). Amounts reported reflect non-fibrous material density on sample filter only. . Legend: T - Trace (less than 1%), VL Very Low (2-5%), L Low (5-15%), M Moderate (15-25%), H High (25-40%), VH > Very High (greater than 40%). AIR SAMPLE: ANALYSIS RZPCRI CLI2ST: S.H.S., Inc. PROJECT: Valve Peeking, Garlock, Inc. Microscope Field Area * 0.00785 ssi1 Exposed Filter Area * 385.0 am2 RSPORT #: 01-191273 PAGE 3 of 3 Analyst(s) - KFG Rev. by: "a IjJ U**-t *rr\ G-OLLCLiA `.-ntrclled Solutions AIR 3, ANALYSIS REPORT CLIENT: E.6.S., Inc. 3033 170th FI. S.. Scllcvu*/ HA 9B008 PROJECT: Valv* Packing, Garlock, Inc. 3SP0RT #: 57-191273 REPORT DATS: 2-01-91 FAGS 1 of 3 CATS RECEIVED: 1-30-91 70-t: Non* Givtn CLIENT SAMPLE ID SSS ID SAMPLE SAMPLE DATS VOL (L) HSa- FIELD BLANK CNT FIBERS SXGRND COUNT COUNT /100 ILDS PER CC MAT F-3LK-1 191273 1-29-91 0 P5S-3 191274 1-29-91 1219 PSN-1 191275 1-29-91 2582 P5E-2 191276 1-29-91 2803 PSS-3 191277 1-29-91 2470 PSW-4 191278 1-29-91 3550 FIOS-S - 191279 1-29-91 2767' P10E-6 191280 1-29-91 3484 F10S-7 191281 1-29-91 2527 PlOW-8 191282 1-29-91 2594 PP-17 191283 1-29-91 450 PP-18 191284 1-29-91 540 FLAB 13-19 191285 1-29-91 0 SAMPLE LOCATIONS: Saapl* 1191273 was takan as a fiald blank. 1.5 38.0 26.0 15.0 30.0 29.0 22.0 13.0 19.0 26.0 15.0 11.0 0.0 100 100 100 100 100 100 100 100 100 100 100 100 100 N/A 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 N/A BLANK 0.015 0.005 0.002 0.006 0.004 0.004 0.002 0.004 0.005 0.016 0.009 BLANK M H H H H H M w M M M SEATTLE DIVISION 12822 GATEWAY Dfl SEATTLE. WASHINGTON 98:68 1-206-243-8573 rAX 206-244-37:5 ENCLOSllliE0)6 AIR EAXPIZ AXALYSIS REPORT CLIENT: E.H.S., Inc. PROJECT: Valve Packing, Garlock, Inc. REPORT #: 57-191273 PAG2 2 of 3 SAMPLE LOCATIONS (continued): Sample #191274 was a background sarnie. Sasple #191275 was by bystandar. S', north. Sample #191276 was by bystandar. S', aast. Sanple #191277 was by bystandar, 5', south. Sarple #191278 was by bystandar. S', wast. '. Sample #191279 was by bystandar, 10', north. Sample #191280 was by bystandar, 10', aast. ~ ' Sasple #191281 was by bystandar, 10', south. Sasple #191282 was by bystandar, 10', wast. Sasple #191283 was a personal sasple on Carl Mangold. Sarnia #191284 was a parsonal sample on Bob Gay. Sanple #191285 was takan as a fiald blank. Tha samples "analyzed in this raport wara provided by third partias not subjact to control by HAZTOX, Inc. or any of HA2TOX, Inc.'s affiliatas. Consequently, tha results presented represent microscopic examinations in HAZTOX, Inc. laboratory facilities and we make no representation as to sasple collection techniques or procedures. Analysis was performed using phase contrast microscopy under tha guidelines of KICSH method #7400-A. * A minimum of tan fibers par 100 fields is needed for reliable quantification. Sasples with less than 10 fibers par 100 fields are reported as lass than (<) tha quantification limit. * Amounts of non-fibrous material are determined using charts for estimating cDeposition from tha Journal of Sedimentary Petrology (v. 25, pp. 229-234, 195S). Amounts reported reflect non-fibrous material density on sample filter only. Legend: T " Trace (less than 1%), VL Very Low (2-5%), L Low (5-15%), ' X Moderate (15-25%), H * High (25-40%), VX * Very High (greater than 40%). 3b AIR SAMPLE ANALYSIS REPCR' CLIENT: E.H.S., Inc. PROJECT:, Valve Packing, Garlock, Inc.. Microscope Field Aria 0.00785 an* Exposed Filter Area 385.0 an2 REPORT #: 57-15127: PAGE 3 of 3 Analyst(s) - TAP Rev. "IrevoRr FkrnQnde* ENCLOSURES) C 3 J* - ENVIRONMENTAL CONTROL SCIENCES, INC. CtrtifitJ InJutrul Hntruit Enwamaual Amlrtteal Chtmmry i Occupational Htilth frorimi Aibtuot Surwyt , Tent Chtmicil Central Wmt Central frefrimt February 1, 1991 Mr. Robert A. Woellner Laboratory Director ESSTEX, INC. 11435 West 1-70 Frontage Road North Wheat Ridge, Colorado, 80033 ' RE: VALVE PACXING RESEARCH GARLOCX, INC. - '' Dear Bob, . Enclosed are eleven (11) samples offered for STEM analysis'. They are: T5N-9 T5E-10 T5S-11 T5W-12 T10N-13 T10E-14 T10S-15 T10W-16 ' 4 T5E-B (background prior to samp) : TBlank2 - a field blank T-Lab-4 - a cassette selected from the lot - See lot data sheet Please see the field data sheet for descriptions. The PCM.'s were sent to HA2T0X in Seattle to split results for credibility. Please select the most_appropriate STEM method, presumeably the NIOSH 7402 Method, 8/15/87 with revisions. What I need is; a. The total concentration of'all types of asbestos present in all sizes countable. This gives the total asbestos fibers present. The numbers of chrysotile, anphiboles, and ambiguous too b. The "Chrysotile" fiber (structure) size for 5 ua length, and .25 urn diameter to be able to compare to the PCM results. c. The concentration of all Chrysotile fibers present for the 5 ua length and .25 urn diameter. Please see the examples of the ESSTEX format done before for me. This will be acceptable, unless you have a better one. I need the data on each sample. My goal is to be able to compare the TEM results with the PCM results for strengthening the data and to define any other non asbestos fibers that might interfere with the PCM; as it usually does. 3033 170th Plaet Si i Bellevue, Washington 9*00* (206) 747-W20J 3? S5i-QAM,,to_RAWx_|SSTSXlt-l_Feb-91 Page 2 I expect to see few, if .any, amphiboles present. If they are it was contamination, on the valves tested that were taken from steam plants and ships. There is no great hurry on the results. A week or so will be fine. However, this is a research project for a client. The utmost care in reporting is required since the data and results will be used in asbestos litigation cases. ' If you have any qudstions or comments, please call me. President, ECS, Inc. Ends: 11 samples. Field sample sheets (3) . TEM Cassette Lot data * ESSTEX report format ESSTEX Individual Sample Report format EBCLOSDREW)E <i ESSTEK, Inc. TIM ANALYSIS REPORT Prepared For HAZTOX, Inc., Seattle Office Project* Valve Packing Research - Garlock Inc. ESSTEK, Inc. 11435 W. 1-70 Frontage Rd. North (303) 425-7031 ENCLOSURES) ESSTEK, Inc. CLIENT: HAZTOX, Inc., Seattle Office 12822-Getaway Or. Seattle,'WA I81M HAZTOX, Ine., Statll* Offle* REPRESENTATIVE: Dick Sawyer DESCRIPTION OF WORK: ANALYST: Transmission Electron Microscopy (TEM) of air samples at Vstvs Packing Research Gartoek Ine. Oan Dolk ESSTEK, Ine. 11435 W. 1-70 Frontage Rd. North (303) 425-7038 TRANSMISSION ELECTRON MICROSCOPY (JEM) Analysis Methodology TEM analysts wars conducted using NIOSH Method 7402 methodology. Issued August is, 1987. NIOSH 7402 methodology Involves first mounting tub-samples of the air sample filters (mixed cellulose ester) on slides, and plasma etching the MCE filters. The samples are then eoated with a thin layer of carbon in a vaecume vs porttor. Following coating, samples are mounted on 3mm TEM copper gride (200 Mesh) and are further processed in a Jaffa wick washer or condensation washer. . Sample grids are scanned on the TEM at 10,000s and structures identified using the the following characteristics: . 1) All partleules less than 3um diameter with length to width ration of greater than 3:1 with parallel sides. 2) Record fibers diameter and length. 3) Record as Bundle, Cluster, Matrix, or Fiber. 4) Count fibers that are partially obseured by grid bars, log as Sum fiber If 2.S mm is visible. 5) Determine asbestos fiber fraction shorter than Sum and thinner than OJtSum (these fibers undetected In PCM counting.) Laboratory Equipment The laboratory utilizes a Philips CM10 Transmission Electron Microscope. The TEM is equipped for electron diffraction and energy dispersive x-ray analysis. The TEM is located In our full service asbestos analysis laboratory near Denver, Colorado. . Laboratory Results This report in no way implies product approval or endorsement by NIST. This report can be reproduced only In It's entirety. These results relate only to the samples as they were received by the laboratory. Sampling Information Is assumed to be correct as provided on the clients letter of transmittal In accordance with NIST regulation, ESSTEK, Inc. maintains a TEM laboratory average accuracy / precision record of greater than 90% true positives, and less than 10% false positives as calculated from the previous years quality assurance sampte'record*.' ESSTEK, Inc, TEM Asbestos Analysis Data Summary Cliant: Job Location: Data of Anaiyaat: HAZT0X, Inc., Saattia Offica Vilvt Packing Raaaarch Garlock Inc. Fab 02*05 61 1 Description,; L a/b*>>o*> ra t*o >rAy(<,|;aV.:im^.S.A.,iia'* u **,' * Sample ^Numbar-^^j^K^" - Asbestos .. Asbestos, > ... ^ ''FIbairs/mm2 -/I'Fibera /cc;'y ' Asbestos Fiber Ail fibers Ntimbar v*>;- . - > 5 um V> 5 um p:v: > Sum T5N-6 TE601511 13.1 0.002. 10% T5E-10 TE601S12 43.7 0.006 34% TSS.11 TE601813 27.5 0.006 11% TSW-12 TE601514 61.2 0.011 32% T10N-13 T10E-14 TE601515 TE601516 eaa 0.012 45.6 0.006 37% 24% TlCS-15 TE601517 30.6 0.006 21% TlOW-16 TE601516 45.6 0.006 31% TSE*B TE601516 3.3 0.002 N/A ESSTEK, Inc, TEM Asbestos Analysis Data Summary Client: Job Location: Oat* ot Analyse*: HAZTOX, Inc., Seattle Office Valve Packing Research - Gartock, Inc. Feb 02-05 91 Description Laboratory,, TOtaJ 7 .^Totals..' , ' , Ail . Ail ASDeStOS Sample ' V Number*'?-^" Number ^Number '"V Asb;;;:':';- v'Ail Fibers . . Number ;*' - * V >* \ " ' " .Asbestos 'fs;^N0n-Asbl ` S/ecF' T5N-I TE601511 12 44 . 0.010 21% T5E-10 TE601512 26 29 0.020 47% T5S-11 TE601513 20 56 0.016 26% T5W-12 TE601514 27 46 0.020 36% T10N-13 TE601515 17 32 0.015 35% T10E.14 TE601516 12 49 0.010 20% T10S-15 TE601517 16 44 0.011 27% T10W-1S TE601515 20 ' 33 0.014 35% TSE-B TE601519 3 7 0.005 N/A T-Blank-2 TE601520 NSD NSD N/A N/A T-lab-4 TE601521 NSD 1 N/A N/A 1 I UX. ' kM &auXM p*r tFXtn&tk. tx*_f asjaJavuMrtan teiimin) ' ESSTEK, Ine. 11435 W. 1-70 Frontage Rd. North, Wheat Ridgt, CO. 50033 ______________________ (303) <25-7038__________________ * ESSTEK, Inc. TEM Asbestos Assessment Report Sample Locations Bystander^* North Sample Numbenr^:T5N*9 > ... .* LabSan^*Nurnh.^.TEWt3l1 ' '' '-r'Y' YoIumal8am^ad:!fr}i<.'7'S _ ,,, ~ *'* 3*1"- , :, '!/ Dale Received: : Feb 02 81 Date Analyzed:'.^' Fatf 02*05 91 . Filter Type: mixed cellulose V FJitiSlxe(mm):^;: \is~4y.v:-- Analyst: "" Dan Dolic Analytical Sensitivity (s/ce): Average Grid Opening Area (mm2): Number of Grid Openings Examined: Area of Filter Sample Analyzed (mm2): - N/A . 0.0109 . ' 21 . 0.229 ' Structures Counted and Identified* ^ ' Fiber Descritlon. ;> Total -& Fiber Lengthiv^;. TO**1 Total.-.*-. Total Total . .. Total- Fibers-'':': in Microns Bundies- Clusters - Matrices >5um'-- Structures O N e lift r* L Chrysotile 3 9 BDL BDL 3 Amosite BDL 0.0 BDL BDL BDL Aetinollte BDL 0.0 BOL BDL BDL Arrthophyttte BDL 0.0 BDL BDL BDL CroeidoIHe BDL 0.0 BDL BDL BDL Tremolite BOL Total Asbestos 'r -'"'X- ^V'vO-3 Total Non-Asbe 0.0 BOL BDL 3.S-7.0 r :BDL *. j ~v" N/X Hft - BDL BOL H/fi 3 =. * 26 12 BDL BOL BOL BOL BOL 12 44 Number of Asbestos Structures / CC > Sum: l : 0.002 Number of Asbestos Structures / mm2 > Sum: 13.: Selected Area Diffraction: Comments on Psrtieuiate Loading: N/A Qualitative Description of Non-asbestos Partieles: N/A Asbestos < Sum micron structures: 9 Comments: 47 a* ESSTEK, Inc. TEM Asbestos Assessment Report Sample Location:./,,^ Bystander 5' East Sample ; ~/-T - Lab SrnpttNumb;-:tEsoi512 , A- ' Volume Sampled:'"3101 2t m'trr. . Oaf# Received:/-,Feb 02 91 . Oate^Atiiilys^r^a^FebW^ s J . . Fitter.Type:SS'S mixed oeiluiose > FHtarStte {mmj:Y.;?is .'AnaW:^ yv:^^anPb^/: Analytical Sensitivity (a/cc): Average Grid Opening Aru (mm2): Number of Grid Openings Examined: Area of Filter Sample Analyzed (mm2): N?A A... - 0.0100 V-.-.-- 21 Structures Counted and identified* Fiber pescrition..i:;; TotaL^y Fiber Length . . TOUI :=v Total Total Total- :.:y Vr,\*'Ki. Fibers--"- IriVDcrcmZ&y" Bundles Clusters' Matrices' iiSum^ Structures'--'-''''^7 Chrysotite 7 2.3 5.0 14 BOL S 10 28 Amosite BDL 0.0 BDL BDL BDL BDL Aetinoiita BDL 0.0 BDL BDL BOL BDL Amhophylite BDL 0.0 BDL BDL BDL BOL Crocideiite Tremolite BDL BDL 0.0 BDL BOL BDL 0.0 BDL BDL sod BOL BOL Total Asbestos A*?/ Total Non-Asbe N/A .:^:yyt4 ^>BDL u/t Nft .vyr Nft 3&-A' - - 26 Y-s--7a7-: ' ' 29 Number of Asbestos Structures / CC > 5um: 0.008 Number of Asbestos Structures / mm2 > Sum: Selected Area Diffraction: Comments on Particulate Loading: N/A Qualitative Descn'ptlon of Non-asbestos Psrtleles: N/A Asbestos < Sum micron structures: 18 Comments: Hom At ptr yA. yatoccC 9*r-- t $ruflir Tdtft 0..3.t-zuxrvittaXKrqim:w*,-s ESSTEK, Inc. - 1l*3S W. 1-70 Frontage Rd. N., Wheat Ridge, CO 80033 (303) 425-7038 a* nSSTcK, Inc. TEM Asbestos Assessment Report Sample LBCrt8iK..J.Byftinder-r South ; Sample Lab Sample Numbu..TCeoi513v *-; ' Sainpleiyjpi^i^Mr **, Volume Sampded:^-' 192125 v . : . Dale Received: ;.-..;j.,Feb02 9l . Date Analyzed:_. v^Pab 02-05 91 . . ' RlterType:^^.";:'mixa!d cellulose A "= : v : ^ :^'^0in DoHc ` Analytjeal SeneKIvlty (s/ee): Average Grid Opening Area (mm2): Number of Grid Openings Examined: Area of Rlter Sample Analyzed (mm2): N/A; 0.0109 .. vv.s- 2Q 021s | Structure* Counted and identified* - ' Fiber Detention ^ Total.TM:/.' Fiber length . : . TOUI ; Total Total Total.-.'.: Total- in'tnerbna`%'-*-"' Bundles Clutters' Matrices 'SSunr^ Structures Chrysolite 4 1.5-3.5 12 1 a 6 Amosite BDL 0.0 BDL BDL BDL Aetinoiite BDL 0.0 BDL BDL BDL AnthophylKe BDL 0.0 BDL BDL BDL Croeidolite BDL 0.0 BDL BDL BDL Tremollte BDL 0.0 BDL BDL BDL Total Asbestos ;'.'."' -1.5 ^3.5- : ..Uiv-12 .? 8 . Total Non-Asbe *vi.N/a W-Z'H/t S?A/fi !^:?..47 . Number of Asbtftoe Structures / CO > 5um: ` ws 0.006 20 BDL BDL BDL BDL BDL 20 56 Number of Asbestos Structures / mm2 > Sum Selected Area Diffraction: Comments on Psrtieulate Loading: N/A Qualitative Description of Non-asbestos Particles: N/A Asbestos < Sum micron structures: 14 Comments: 4? 4 ESSTEK, Inc. TEM Asbestos Assessment Report Sample Location:;;^ Bystander - 5* West , ,,^ Sample Number: T5W-12 l / - ' ,, ' < w \ . /. ,, ,/ Lab Sample Numb^7Eebl514 . " ~r , r Sa?npteTyprc^;;"Alr^i^%^,^ , - ; *. Volume Sampt#d;1:v 2244 L ** * " * *' Dale Received:. . . Mb 02 91 Data Analyzed: :: Feb 02-05 91 RKirTypa:.vpV:,' i'mbed cellulose Filter Size (mm): Analy*f:;'/'"';--:: Dan Oofir. '" Analytical Sensitivity (s/ec): Average Grid Opining Aria (mm2): Number of Grid Opining* Examined: Atm of Filter Simple Analyzad (mm2): N/A - 0.010* - 21 0229 Structure* Counted and identified* ;y. | Fiber Detention ISSt Fiber.Ungth in iiiiBcrbn* ^ Total Total;;* Total Total aj wja^v.. ; " Bundies' Clusters Matrices Structures5"--"* Chryiotile 13 3.0*11.0 11 1 2 14 27 Amoslte BDL 0.0 BDL BDL BDL BDL ActinolKe BDL 0.0 BDL BDL BDL BDL Anthophytlt* BDL 0.0 BDL BDL BDL BDL Croeidollte Tramollte BDL BDL 0.0 BDL BDL BDL 0.0 BDL BDL BDlj BDL BDL Total Asbestos ..es-^O.O- 11.0' #v!>-2 , .. 14 . 27 Total Non-Asbe asm* ;^..3o : 48 Number of Asb'fbtoa Structural / CC > Sum: Number of Aabastoa Structural / mm2 > Sum: [-^v 01.2 Sailctad Araa Diffraction: Commant* on Particulate Loading: N/A Qua Illative Daacriptlon of Non-aibastot Partieias: N/A Aabastoa < Sum micron ttructurai: 13 Commants: 5o * ESSTEK, Inc. TEM Asbestos Assessment Report Sample Loeatioru ;*,Byrtandar10*North , Sample Number: ^TlONrtS ` ~f Lab Sample Numb VTEW1S15, " - v > ' Volume Sampled:';:;-205fM LT< '' ' "' ^ , - .. Date Received:. ..Fab 02 91 .. ' " 'Data Analyzed: J Feb 02-05 SI .. .. FiRarTypa:.:..:'. mixed cellulose - r ' Filter Size (mm):' ;;;:;:!2S:1^;q , Analyst: Dahbonc " ' Analytical Sensitivity (s/ee): Average Qrld Opening Arse (mm2): Number of fin'd Openings Examined: Area of Filtar Sample Analyzed (mm2): Structure* Counted and Iderrtifietf* ...v-v; { N/A 0.0109 ; 20 * ; 0218 Fiber Descrltlon =:*. Total Fiber Length . TOUI ToUl.,*;; TOUI.,,.:.. Total TOUI .. Fibers r "" Bundles'' Cluster's Matrices > Sum Structures' ^ Chrysotila 6 3.0* 10.S 11 BDL BDL 14 17 Amoslte BDL 0.0 BDL BDL BDL BDL Aetlnoltte BDL 0.0 BDL BDL BDL BDL AnthophyiHa BDL 0.0 BDL BDL BDL BDL Crocidollte Tremollte BDL . BDL 0.0 BDL BDL BDL 0.0 BDL BDL bdl| BDL BDL Total Asbestos . > :^3.0- 10.S >'^11 .0. BDL >&%> BDL 14 ...;_,vv 17 Total Non-Asbe N/t Uffi H/f 24 32 Number of Asbestos Structures / CC > Sum: Number of Asbestos Structures / mm2 > Sum: I-"' 7;-.,^.54.21 Selected Area Diffraction: Comments on Particulate Loading: N/A Qualitative Description of Norv-esbastos Particles: N/A Asbestos < 5um micron structures: 3 Comments: Soar At i> B>A witiA'i ESSTEK, Inc. -" 11*35 W. 1-70 Frontage Rd. N., Wheat Ridge, CO 80033 (303) 425-7038 Reviewed and signed tor the company by: Si a* ESSTEK, Inc. TEM Asbestos Assessment Report Sample Location;, ^ Byslander-10'East Sample Number: ."LTiOE-M, Lab&n^'Nimi^'lE60i5l6 .\ *; / x SampleType: - Air- 5 VolumeSimpJedr '221i.tJ.?,* ~v~.' . Date Received; -.. Feb 02 si ", ,, ^bate Anafyzad:. . i'Feb 02-05 91 ^ , FilterType:;^ : mixed cellulose * *r -V " Filler Size {nimj: ;: .;r25-;rv-yfe ... " *'' ' * *' A'naiy'si:.'::"'^':';-' Dan DoUc .' Analytical Sensitivity (s/ce): Average Grid Opening Area (mm2): Number of Grid Openings Examined: Area of Filter Sample Analyzed (mm2): IN/A . ! 0.0109 '20 0,218 Structures Counted and Identified* - ;; 1 FibarDeecritlon..^.. Total.;;?- Fiber Length.; r.^~~ Toul;.... Total Total,;, Total Flba*s;? in'lwcrbruiTM^'-;1 :,'f' Bundles Cturterz" Matrices >Sum Structures - Chryaotile 2 1.0 S.0 71 2 1 10 AmosMe BDL 0.0 BDL BDL BDL Aetinolite BDL 0.0 BDL BDL BDL Anthophyllte BDL 0.0 BDL BDL BDL CroeidoUte BDL 0.0 BDL BDL BDL Tremollte Toul Asbestos :--fy BDL 0.0 BDL BDLj BDL ^^1.0 - 5.0 ' V 10 ''V/V"'' k. ' Total. Non-Asbe m - 12 BDL BDL BOL BDL BDL 12 49 If Number of Asbestos Structures / CC > Sum: |-^:ry^~";:o.oo8; Number of Asbestos Structures / mm2 > Sum | ./-ft: 45.9 Selected Area Diffraction: Comments on Particulate Loading: N/A Qualitative Description of Non-asbestos Particles: N/A Asbestos < Sum micron structures: 2 Comments: 52 r ESSTEK, Inc. TEM Asbestos Assessment Report | Samp* Loc*tJon:;;: i-.Bysandar -.10* South , SampWl^mbR ^TiOS-15 - > ; - _ Lift Smp)* Numb .TEe01517 /V,V , , SarnpiaTypii; Air Volume Sampled:l92lL.fT 'fK ^ 7 . ' : Oat* Received: ..;.;.,Fb 02 81 - Data Analyzed:! Fab02-05 81 FlKTyp;/;f;f3-;'mk(i oetiutose Filter Sba .is Analyst:"/ ?' -DanDolic Analytical SanaltMty (s/ce): Avaraga Grid Opaning Araa (mm2): Number of Grid Openings Examined: Area of Filter Sample Analyzed (mm2): N/A 0.0109 27 0.294 Structure* Counted end IdentHletf* - | Fiber Desertion 'ft TotaL-s#'- Fiber Length ..... TOUl Total Total.,:,.. Tottl Total . ,. . Rbeim : .7 in Ulcifdins' Bundies Ousters' Mltrfcee >'5um '.7 Structures " ' Chrysotile 5 2-0-12.0 8 BDL 2 9 16 Amosits BDL 0.0 BDL BDL BDL BDL AetinoiKe BDL 0.0 BDL BDL BDL BDL AnthophyiHe BDL 0.0 BDL BDL BDL BDL CroeidolHa Tremolite BDL BOU 0.0 BDL BDL BDL 0.0 BDL BDlj BDL BDL BDL Total Asbestos :--.&:^-tL0: 12.0 ...BDlJ --2 ',y.V. # ... 16 Total Non-Asbe ^A.N/fl n/j > U/t JjfSfe N/A ,:^vi;33 ' 44 Number of Asbestos Structures / CC > Sum: Number of Asbestos Structures / mm2 > Sum .30.6 Selected Area Diffraction: Comments on Particulate Loading: N/A Qualitative Description of Non-asbestos Particles: N/A Asbestos < Sum micron structures: 7 Comments: 53 , ESSTEK, Inc. TEM Asbestos Assessment Report Sample Locatiorc.,s:.bystander -10' West Sample Number: TlOW-lS Lab Sample Numb TE60151*..,,' , >~ Volume Sampled:' ''1944 *" 'y -_ 1. ''ll, . <. v-1^'"**'* '' ' , Date Received: Feb 02 91 - ..DeleAnalyzed:" '~fiaS4Sti . Fjttertype: 1 . -mired ceiluloxe ' Analyst:"iT Dm DoHc ........ Analytical Sensitivity (s/ee): Average Grid Opening Ares (mm2): Number of Grid Openings Examined: Area of Fitter Sample Analyzed (mm2): Structures Counted and Identified?-?. ' N/A . .:- . . 0.0109 ' 26 ' 0.283 T*aFiber " >{***' Deeerttlen ... v: v:.i(iV,< . Total;#-; Fifaa::^ Fiber Length ... tnMIwoni^^vr 7otal^.;;. Bundles Tottl^-c Clusters Matrices >'5um^ Structures'- ,.... - -;K- Cltryaotila BDL 0.0 16 1 3 13 20 Amoatta BDL 0.0 BDL BOL BOL BOL Actinoitte BDL 0.0 BDL . BDL BOL BOL Anthophyttte BDL 0.0 BOL BDL BDL BOL Croeidoltta BDL 0.0 BDL BDL BDL BDL Tremoltte BDL 0.0 BOL BDL{ BDL BOL Total Asbestos .-.^..'/BDL v?^:-".13 20 Total Non-Asbe: AlJi/f H/t '33 Number of Asbestos Structures / CC > Sum: Number of Asbestos Structures / mm2 > Sum - 45.9 Selected Ares Diffraction: Comments on Particulate Loading: N/A Qualitative Description of Non-esbestos Particles: N/A Asbestos < 5um micron structures: 7 Comments: I ESSTEK, Inc. TEM Asbestos Assessment Report Sample Location:./....; Background Sample . Sample Number:'jaiis&fe ;r::~ Lab Sample Numb . 7E601519X ,, s " Sample Type: -'''' ~Afrt"^ J vh "Vr* Volume Sampled:' ' ' 77* ,< *\r/s' wA V ^ , VV v>. .Date Received: Feb 02 si . I^ate Analyzed: Feb C2-05 81 - FilterType:;/v^'-;;-'mirad cellulose ` ..Fiber Size {mm):.>;--.:.-25 y .. ~ ;Anef^r'#^';;;;r? Den Do'lk'-- ' 11 Analytical Sensitivity (s/ee): Avenge Grid Opening Atm (mm2): Number of Grid Openings Examined: Area of Fitter Sample Analyzed (mm2): Structures Counted and identified* ^ N/A 0.0108 ' - 28 0.305 Fiber Desertion. ,;4 TotalTM' Fiber.Length Total TOtty;3 Total,;,/; Total Tool "v Fib*?* Si litJe*:dne'";'f':'":.' ' Bundles1 Clusters' Matrices' >5um Structures Chrysotile BDL 0.0 3 BOL BDL 1 Amosito BOL 0.0 BDL BOL BOL Actinolite BDL 0.0 BDL BDL BDL Anthophylite BDL 0.0 BDL BDL BDL Croeidolite BDL 0.0 BDL BOL BDL TremolKe BDL 0.0 BDLj BDL BDL Total Asbestoe !.v i-swBDL '-V-'., .BOL iiv&BOL Total Non-Asbe N/fi -.. r.&Xr-H/t -;:j>^/N/< :^vyv3 -r, 3 BOL BOL BOL BDL BOL 3 7 Number of Asbestos Structures / CC > Sum: |^^r^-:S^:Q.Q021 Number of Asbestos Structures / mm2 > Sum: Selected Area Diffraction: Comments on Particulate Loading: N/A Qualitative Description of Non-asbestos Particles: N/A Asbestos < Sum mleron structures: 2 Comments: ESSTEK, Inc. TEM Asbestos Assessment Report Sample. Location::.' . Field Blank TEH Sample Number:: ;? rWBiank-2! j ^ ''Z,',,,,'' \ ' Lab.Sample.Numb* ; TE601520 a~i Sample Typi^^-V.f^V i / Volume Sampled: :< n/a . : -V f" -v> * - ; .f - : . Analogical Sensitivity (s/ee): Average Grid Opening Area (mm2): Number of Grid Openings Examined: Ares of Fitter Sample Analyzed (mm2): | Structures Counted and Identified* Date Received: . FeO 02 81 . , 'r' -Date Analyzed: " Feb 02-05 91 .. .. . mixed cellulose w^ 'FitterSize (mm): h SS'&S^r- " "" - 1 - Analyst:. Den bolic N/A::4,:., . V 0.0100 2S ' , &31S Fiber Deserition Total-.":" Fiber Length . ; T0U1 - Total ToUl ./ Tout Fibera :o ^'Wcrons-'-^'-v'/" Bundles" Clusters Matrices1 >5um ' Chrysotile BDL 0.0 BOL BOL BDL Amostte BDL 0.0 BDL BDL BOL Aetlnolite BDL 0.0 BDL BDL BOL Anthophyiite BDL 0.0 BDL BDL BDL Crocidolite BDL 0.0 BDL BDL BDL Tremolite BDL 0.0 BDL BDL BDL Total Asbestos . rt&pBOL Total Non-AsDe ::^N/a 0.0 ~V.:5VBDL N/A ssa-sN/P BDL ir^.BDL Nft Total ........... StHitrfurn"" ' BOL BDL BDL BDL BDL BDL BDL BDL Number of Asbtrtoa Structure / CC > Sum: Number of Asbestos Structures / mm2 > Sum Selected Ares Diffraction: Comments on Particulate Loading: N/A Qualitative Description of Non-asbestos Particles: N/A Asbestos < Sum micron structures: Comments: A ,1 ESSTEK, Inc. TEM Asbestos Assessment Report Sample Location:.-Lot Blank... ,,,, ..........>,__________. Sample Number:. ^;'^rfi/604K02 .* ~ .v.; ; Lab Sample..NumbT;TE#oi521 *' ~ * J'C s.\ .-w::.'..- . Volume Sampled: " N/A *- *"-r-'.. V * 'v' *' -- -j Analytical Scnattlvfty (a/cc): Average Grid Opening Area (mm2): Number of Grid Opaninga Examined: Area of FiHer Sample Analyzed (mm2): ...-. - Date Received:. / ,:.vFeb021. . ' Dale Analyzed:,:..- - . Feb02-05 9t,. . -- - .. ' Filter Typer ' - mired cellulose -- * - Filter Size (mm): Analyst!"' ` " 25 DanDoKc ' N/Av^- * 0.0109 - 29 0.S15 Structurea Counted and ^dantl^^ad^ | Fiber Deseritin.4:;- Total Fiber Length. . TOUI Total- Total Total 4c. Total . . . Fibers"" 'fit Wcrona'v?^'?*?; Bundles Cfusters' Matrices >Sumv-ry Structures"'"* Chrysotile BDLl 0.0 BDL BDL BOL BDL Amosite BDL 0.0 BDL BDL BDL BOL Actlnoltte BOL 0.0 BDL BDL BDL BOL AnthophyDte BDL 0.0 BDL BDL BDL BDL Crocldollte BDL 0.0 BDL BDL BDL BDL TremoIHe BDLl 0.0 BOL BDL BDL BDL Total Asbestos - . V-... BDL . v.-;:.. ;00 BDL ^VBDL ar^'BOL 4:.4-4 . BOL Total Non-Asbe v> ' H/fi H/fi ys^Wfi .44. N/# **/ t Number of Asbestos Structurea / CC > Sum: Number of Aabestoa Structurea / mm2 > Sum: Selected Area Diffraction: Comments on Partleulate Loading: N/A Qualitative Description of Non-asbestos Particles: N/A Asbestos < Sum micron structures: Comments: SI ESSTEK, Inc, TEM ANALYSIS REPORT Pr*pr*d For. HAZTOX, Inc., Seattle Office Project* Valve Packing Research Qarlock Inc. ESSTEK, Ine. 11435 W. 1-70 FronUg* Rd. North .. (303)- 42S-703S ESSTEK, Inc. CLIENT: HAZTOX, Inc., Seattle Office 12822 Gateway Or. Seattle, WA 98168 HAZTOX, Inc., Seattle Office REPRESENTATIVE: Dick Sewyer DESCRIPTION OF WORK: ~ Transmission Electron MIeroseopy . (TEM) of air samples at Valve Packing Research * Garlock Inc. ANALYST: Dan Dolk ESSTEK, Inc. 11435 W. 1-70 Frontage Rd. North ' ' (303) 425-7038 TRANSMISSION ELECTRON MICROSCOPY (TEM) Analysis Methodology TEM analysts wart conducted using NIOSH Method 7402 methodology. Issutd August 15,1987. NIOSH 7402 mathodology involvas first mounting sub-samples of tht air samplt fitters (mixed caliulosa astar) on slides, and piasma etching the MCE filters. The samples are then coated with a thin layer of carbon in a vaeeume vaporstor. Following coating, samjSTes are mounted on 3mm TEM copper grids (200 Mash) and are further processed In a Jaffa Wick washer or condensation washer. . Sample grids are scanned on the TEM at 10,000x and structures identified using the the following characteristics: - 1) All partieules less than 3um diameter with length to width ratio\ of greater than 3:1 with parallel sides. 2) Record fibers diameter and length. 3) Record as Bundle, Cluster, Matrix, or Fiber. 4} Count fibers that are partially obscured by grid bars, log as 5um fiber if 2.5 mm la visible. . 5) Determine asbestos fiber ftactien shorter than 5um and thinner than 0.25um (these fibers undetected in PCM counting.) Laboratory Equipment The laboratory utilizes a Philips CM1Q Transmission Electron Microscope. The TEM Is equipped for electron diffraction and energy dispersive x-ray analysis. The TEM Is located In our full service asbestos analysis laboratory near Denver, Colorado. _ Laboratory Results - This report In no way implies product approval or endorsement by NIST. This report ean be reproduced only in it's entirety. These results relate only to the samples as they were received by the laboratory. Sampling information is assumed to be correct sa provided on the clients letter of transmittaL In accordance with NIST regulation, ESSTEK, Inc. maintains a TEM laboratory average accuracy / precision record of greater than 90% true positives, and less than 10% false positives'is calculated from the previous years quality assurance sample records. ESSTEK, Inc, TEM Asbestos Analysis Data Summary Client: Job Location: Date of Analyses: HA2T0X, Inc., Seattle Office Valve Packing Research Gariock inc. Feb 15 91 I Desqrlptlorv \ Laboratory. Asbestos-:?; Asbestos.. Sample; i*~/, Number *Tr" ,, * Fibers / mm2, ; Rbers /cc. ~ - Number .*Y._; >5urii 5uife/ ;r.; w>Ww>oryyr..y.>-. ... i,'www:' . r:* - ;> Asbestos Fiber All fibers >.5um .' T5N-9 TE601811B 45.9 0.009 25% rAibS?|'M.Fibers-1^-:. T5N-9 TE601511B 19 41 0.016 32% ESSTEK, Inc. 11435 W. f-7.0 Frontage Rd. North, Wheat Ridge, CO. 90033 ESSTEK, Inc. TEM Asbestos Assessment Report Sample Location ;:{Jiy*&ndar'- s' North.. Senipl# ", - - - Lab Sample Numb TESOIBIfB T' "T .'~V Date Received: .Fab is 91 ^ - -v- DatifAnaiy; Fab`IS 91 ... ' RIHr'Typej^nr mixed cellulose Volume Sampled: ` 20B4.7B L* t,"~" " -* s^^^Arial Dan Ddltc Analytical Sensitivity (a/ee): Average Grid Opening Area (mm2): Number 0f Grid Opening* Examined: Area of Fitter Sample Analyzed (mm2): N/A . r0.0109 20 . -.0.218 Strueturaa Counted and IdentHiedT.... ;.:: -1 Fiber. D*scrit3on;;S: ToUl FiberLength..' Fibers^ in Microns^ Total: ,<5 TOUl ToUl .ToUl. Bundies'' Cfusters' mm TOUI::;;;. ' Structures'"''" ... Chrysotil* 4 2.0 5.0 s 2 7 10 19 Amoslte BDL 0.0 BDL BOL BOL BDL ActlnoiKs BDl 0.0 BDL BDL BOL BOL Anthophylh* BDL 0.0 BDL BOL BDL BDL Crocidolite BDL 0.0 BDL BDL BDL BDL Tremolite BDL 0.0 BDL BDL BDL BDL Tout Asbestos ,35vv<4 -5.0 7 r^'V-IO 19 Total Non-Asb 24.0: ?30 41 Number of Asbestoa Structures / CC > 5um: |^:r^^S;^0.00S| Number of Asbestos Structures / mm2 > Sum: Selected Area Diffraction: Comments on Particulate Loading: N/A Qualitative Description of Notv-esbestos Particles: N/A Asbestos < Sum micron structures: Comments: 4 14-FEB -91 17;32:02 RATE- 4C7CPS FS- 1B1CNT R- B R5BEST timePRST- . mm R 36L5EC OFF 3 14-FEB -91 16: 53 r 01 RATE* E49CPS FS- 1B6CNT R- 5 RSBEST T X ME PRST R 49LSEC OFfF 0CNT EDflX 1-rt -- F EB-9JL 17:17: 23 RATE -17104CPS FS- 32BCNT R- B flSBEST TIMEPRST-. -- R 54LEEC OFF r<~s > z. Us.sTtU /UAST?X.T*c. CORPORATE LICENSES AND ACCREDITATIONS . The following are the current corporate licenses and accreditations: Boise Office: NVLAP Accreditation from National institute of Standards and Technology. Since May 1989 ' 1368 EPA Bulk Asbestos Quality Assurance Program (RTJ) Since April 1988 0285 EPA Interim Laboratory Accreditation for Laboratories that offer Analysis of Bulk Samples for Asbestos. Since June 1988 0285 AIHA Laboratory Accreditation Since June 1986 0303 PAT Participant Since June 1986 32903-001 Seattle Office: NVLAP Accreditation from National institute of Standards and Technology. Since May 1989 A!HA Asbestos Analysts Registry Since April 1988 PAT Participant Since April 1988 1631 98168001 98168001 ENCLOSURES u Denver Office: NVLAP Accreditation from National Institute of Standards and Technology. Bulk Since July 1989 TEM Pending AIHA Laboratory Accreditation Since January 1S89 AIHA Asbestos Analysts Registry Since June 1S88 . 1602 1602-0D 378 . 80225001 PAT Participant Since May 1988 80226-001 The Commonwealth of Massachusetts Certification for Analytical Services Since Jufy 1989 AA000068 The State of Vermont PLM, PCM, and TEM Analysis Since September 1989 12299 ID Code AAS-02S9 Cleveland Office: NVLAP Accreditation from National Institute of Standards and Technology. Since July 1989 1700 AIHA Asbestos Analysts Registry Since March 1988 44130-001 PAT Participant Since February 1988 44130-001 United States Department of Commerce National Institute of Standards and Technology 4? American INDUSTRIAL HYGIENE . ASSOCIATION '`ESSTEji IncCu^ir'ialJfygiene (jtBovaborn 'wKec&i&dge, has fulfilled AlHA eritaris for Industrial Hygiene Laboratory Accreditation since January 1. 1989 This accreditation shaJI be effective,until k. Tst January, __________ subject to continued compliance with ' Libertiery AccrMhaiien Cwimwiti tYIt AccrMitaiteft Mumlwr American InSuniial Hyfn AsMciattan April 10, 19*9 bit* o0 s < > o< m -rn o ric iE H c v A H t T ic *t testing m o o h m LABORATORY bereoriiahce aoumo iox ASBESTOS ANALYSTS REGISTRY JOE iJENKINS ESSTEK 11*35 WEST 1-70 FRONTAGE ROAD N WHEAT RZ06E CO 80133 '. ,August 6 1990 Rsoort ef porfofnenco Tor Round 1*. Organization 88226081 19 KMX (lOprvt) bsults it/m1) ra* ns qkukt mum out) wains rarouuNcz * *13 TUT RAT1KS uu sown, stevix *142 its 14*2 OOIirm. IUOU *142 3SJ 141* rtsn. cut* ji. A142 1t4 1JJ4 CASSIS, JDK *142 1*3 1*4* jwa*. MM *142 sn 2410 CITJWO, KM *142 144 Mut 2414 PIKDna. 9 Mil A142 322 241* JDflCJKS, JCC C. *142 122 2<2* nsA. wuxr a *142 m 2423 *na, nous c. *142 144 Uut 2424 nsusw, own *142 234 2734 rami, B *142 211 1*2* HOOCH. CUSCO *142 124 taut 1142 lit 2142 127 1142 It* 2142 123 2142 132 2142 1*2 2142 214 2142 172 2142 12* 2142 12* 2142 1*1 2142 223 2142 113 C142 12* Cl42 SIS C142 222 C142 IS! 40ut C142 232 C142 2SS Cl42 2ti Cl42 2SS C142 322 042 1*1 042 2*1 042 32S 042 311 9142 3*1 9142 433 9142 33S 9142 214 tout 9142 221 9142 3*4 9142 3M 9142 311 9142 322 9142 242 9142 zn 9142 421 9142 32* 1 1 *carr*iu 1 1 wamiix 1 1 tcamsu 1 2 tammx 1 1 uanmz 1 1 *carr*iu 1 1 *earruu 1 1 tes?T*nx 1 1 userrtm * 1 uarruiz 1 teamiLE 1 AC3FTAILE 1 *samn s dotoralnotlon of outliers for the obove results ore based on the following performance Halts: SAMPLE X.O.: A1*1 1*1 C1*1 01*1 LOWER LIMIT: 187 75 205 98 REF. VALUE : 575 1*9 *07- 191 UPPER LIMIT: 7*9 299 13 382 A1*2 81*2 Cl*2 01*2 153 103 178 217 307 207 356 *5* 91* *1* 711 869 E1*2 FI *2 91*2 HI *2 335 301 588 1*2 670 602 776 285 13*0 120* 1552 570 All results for the AAR program MUST bs reported to AXHA, PO Bax 8390, 3*5 Whit* Pond Orlvo, Akron OH **320-9998.(216/873-2**2). ONLY SCAN FORMS WILL BE ACCEPTED NO PHOTOCOPIES OR FAXES. ' THE AMERICAN BOARD OF INDUSTRIAL HYGIENE , .INCORPORAT* ED Organized to improve the practice end educational standard* or the profession of Industrial Hygiene. * This is tb certify that I . Donald G. Quilici hairnet the requirements oftills Hoard through his education, experience, and professional ability, and is hereby certified In the - COMPREHENSIVE PRACTICE of ` INDUSTRIAL HYGIENE 73