Document 6X39BoLpm2MJYj8nx2Vo3dVm

FILE NAME: Asbestos Textile Product Use (ATPU) DATE: 1981 Dec 4 DOC#: ATPU026 DOCUMENT DESCRIPTION: Unpublished Consultant Report - Asbestos Cloth Survey for Law Offices of Kenneth W. Carlson ASBESTOS CLOTH SURVEY for LAW OFFICES OF KENNETH W. CARLSON by George E. Caesar Jr., CIH December A, 1981 EAL W.O. 62-0149 EAL Corporation EAL Corporation INTRODUCTION This ^report covers the evaluation of potential exposures to airborne asbestos fibers during operations involving the handling of asbestos con taining cloth. This project was conducted using the facilities at EAL Corporation, 2030 Wright Avenue, Richmond, California. This project was conducted for the Law Offices of Kenneth W. Carlson. The purpose of this project was to re-create similar conditions to those conditions in the past when asbestos containing cloth was used regularly for pipe insulating purposes and evaluate the personal exposures to asbestos during these conditions. The principal contacts for Kenneth W. Carlson were Mr. Stephan P. Angelides and Mr. John Robinson, Attorneys-at-Law. EAL's Project Manager for this project was Mr. George E. Caesar, Jr., Certified Industrial Hygienist (No. 1058). SUMMARY OF RESULTS. Two atmospheric samples for asbestos fibers were taken on an asbestos worker tearing five inch strips from a roll of asbestos cloth. The measured concentrations during the two sampling periods were 5.8 and 13.7 fibers per cubic centimeter (fibers/cc). One area sample was taken continuously during the study period. This sample was analyzed at 6.3 fibers/cc. The current CAL/OSHA and FED/OSHA eight hour time weighted average (TWA) permissible exposure limit (PEL) is 2.0 fibers/cc. The ceiling or short term concentration, which cannot be exceeded is 10.0 fibers/cc. During the study, the ceiling limit was exceeded during one 16 minute sampling period. The time weighted average concentration measured during the two sampling periods indicates that similar operations performed for more than 105 minutes per work shift would exceed the present CAL/OSHA and FED/OSHA PEL of 2.0 fibers/cc. EQUIPMENT'AND STUDY PROCEDURES 1. A project study area at EAL was isolated from other laboratory areas by lining an approximate 6 feet by 15 feet laboratory with six mil visqueen EAL Corporation plastic. A decontamination chamber of approximate 6* x 6' dimension was installed at the door. The room was lined and the chamber constructed by General Industrial Insulation Company of Pacheco, California. 2. Atmospheric samples for asbestos fibers were taken by attaching a Mine Safety Appliances (MSA) portable sampling pump, Model G, to an experienced asbestos worker. The pump was connected by iygon tubing to an open-faced 37 millimeter mixed cellulose ester filter cassette. The pump was pre calibrated with a primary standard to 2.0 liters per minute (Lpm). Air was drawn through the open faced filters at the prescribed 2.0 Lpm rate. The cassettes were attached at the worker's breathing zone. An area sample was taken in a similar manner by attaching the cassette at 1.5 meters above the floor. 3. After the sampling period, the cassettes were closed and returned to the microscopy laboratory for analysis. The samples were analyzed by National Institute for Occupational Safety and Health (NIOSH) Method P&CAM 239. This method employs phase contrast illumination microscopy at 400-450 magnification. Only fibers greater than 5 microns in length were counted. One hundred counting fields per filter were counted. EAL Corporation is accredited by the American Industrial Hygiene Associa tion (AIHA); accreditation number is 25. 4. The asbestos cloth was analyzed for asbestos content by polarized light microscopy (PLM), the method of choice designated by the United States Environmental Protection Agency (EPA). DISCUSSION An experimental asbestos cloth handling operation was developed and conducted at EAL Corporation for the Law Offices of Kenneth W. Carlson. The purpose of this project was to evaluate potential workman exposures to asbestos fibers during normal operations involving the handling of this cloth. The asbestos cloth was received by Mr. George E. Caesar, Jr., CIH, Manager Environmental Sciences Department, of EAL on November 6, 1981. The EAL Corporation cloth was sent in a wooden box from Mare Island Naval Shipyard. The box was completely wrapped in approximately 4 mil plastic. The plastic was taped with duct tape. The shipper was noted to be R. L. Andrew (See Appendix 1). The box was stored unopened in a secured location at EAL until December 4, 1981. A laboratory section at EAL was prepared for this project. The company of General Industrial Insulation of Pacheco, California, was contracted to seal the laboratory with six mil visqueen plastic. A decontamination chamber was installed at the entrance to the lab. This was the only entrance to the lab. The total laboratory dimensions were approximately sixteen feet in length, six feet in width and nine feet in height. The decontamination chamber was approxi mately six feet long, six feet wide and six and one-half feet in height. The room was not mechanically ventilated during this study. There were two non-operating exhaust hoods in the room and a passive ceiling return air duct. On December 4, 1981, arrangements were made with Mr. Glenn Brown of Vacaville, California, to perform normal stripping techniques on the asbestos cloth. Mr. Brown is an experienced asbestos worker with specific experience in handling the asbestos cloth of interest. Mr. Brown, Mr. John Robinson of the Law Offices of Kenneth Carlson, Mr. Jeffrey Brown, Mr. Kipling Fout and Mr. George Caesar of EAL Corporation were present when the box containing the asbestos cloth was opened. The product manufacturer was labeled as Raybestos-Manhattan of Charleston South Carolina, on the box. There was a GSA identification label on the box. There were no warning or precautionary labels or markings on the box or roll. The enclosed asbestos roll was wrapped securely in brown paper. Mr. G. Brown was outfitted in a complete personal protective equipment uniform including coveralls, booties, gloves, head covering and NIOSH approved respirator for asbestos exposure. Mr. G. Brown was outfitted with a personal sampling monitor by Mr. J. Brown. The monitoring scheme involved a portable air sampling pump worn on a webbed belt around Mr. G. Brown's waist.. The pump was connected by Tygon tubing to an open-faced filter cassette. The cassette was attached at Mr. G. Brown's lapel in a slight downward position EAL Corporation representative of his breathing zone. The pump was precalibrated at 2.0 liters per minute. An area air sampling monitor was also placed in the work area. Mr. G. Brown then entered the work area and proceeded to cut the edge of the roll for two or three inches. Mr. G. Brown would then tear across the sheet until he had separated a strip about five inches wide and five feet long. During the first sampling period, eight strips were taken from the roll. Six strips were bagged in plastic. The other two were stacked. During the second sampling period, an additional eight strips were removed. All of these strips were stacked in the work area. Two sampling periods were chosen based upon professional judgement. The two periods were chosen to represent specific work periods. Their relationship to full shift operations was left open to interpretation due to the reported variability in typical work shifts. Between the two sampling periods, Mr. Brown removed his personal protec tive equipment while in the decontamination chamber and exited for a break. Mr. J. Brown removed the sampling monitor before he removed the protective equipment. After the sampling period, the filters were capped and returned to the Microscopy Laboratory for analysis. Additionally, a bulk sample was taken of the dust in the bottom of the box along with a sample of the cloth. After completion of the project, the area was cleaned and restored by General Industrial Insulation. All waste materials were disposed according to state and federal regulations. The remaining portion of the asbestos roll was secured at EAL. RESULTS AND CONCLUSIONS The sample of material from the asbestos roll was analyzed for asbestos content. .The sample was described as 90 to 95 percent chrysotile asbestos. The remaining portion was cellulose. This sample verifies that the asbestos cloth is very high in asbestos content. The airborne samples taken during the monitoring periods were analyzed for asbestos fibers greater than 5 microns in length. Fibers were considered those particles with an aspect ratio of 3:1 or greater. Obviously nonasbestiform fibers were not counted. Otherwise, all fibers were counted. On the filter from the first sampling period, 126 fibers were counted in _ 40 fields. On the filter from the second sampling period 120 fibers were counted in 20 fields. From the filter from the area sample 308 fibers were counted in 20 fields. The resulting airborne concentrations during the sampling periods were 5.8 and 13.7 fibers/cc respectively. The time weighted average (TWA) con centration for the two sampling periods was 9.2 fibers/cc. The time weighted average concentration is calculated from the equation: TWA C1T1 + C2X2 T total Where TWA time weighted average concentration concentration during sampling period 1 * concentration during sampling period 2 T^ time, in minutes, of sampling period 1 T_ * time, in minutes during sampling period 2 T ^ total total minutes T^ + Tj The area sample measured during the two sampling periods indicated 6.3 fibers/cc. This sample describes the ambient concentration during the entire time of the project. The measured concentrations during the asbestos cloth stripping were found to exceed the current CAL/OSHA and FED/0SHA PEL of 2.0 fibers/cc. Additionally, during the second sampling period the ceiling limit, or concentration, which should not be exceeded for any time period, was exceeded. The variation in concentration between the two work periods may be due to an airborne accumulation of asbestos fibers over the test periods. The fibers generated were noted to be quite light and fluffy and appeared to be easily generated into the air. EAL Corporation Mr. G. Brown described the use of this type of cloth in this manner as being what is described as a short term continuous exposure. The workman would continuously cut strips until enough strips were available for the daily operation. The strips would then be used to insulate various sides of pipe. Based upon the results for the two sampling periods, the 8-hour PEL of 2.0 fibers/cc would be exceeded if this operation were conducted for more than the 105 minutes. The following calculations explain. Cj Tj^ + C2T2+. C ^ T y . C j ^ TWA _ total (9.2) x (X) 2 fibers/cc = 480 min. 104.35 - X where 2 fibers/cc = 8 hour PEL 9.2 fibers/cc = TWA concentration for two sampling periods 480 minutes in 8-hour workshift X exposure time in minutes needed to exceed PEL The conclusions from these results are that the cloth is extremely high in asbestos content and that significantly high expousres can result from handling the material. These exposures can exceed the ceiling maximum exposure limit and the 8-hour PEL. The TWA concentration indicates that operations exceed ing 105 minutes per workshift will exceed the 8-hour PEL. Exposures at these levels can be injurious to health and require adequate engineering and pro tective equipment controls. Since the type of operations involving the asbestos cloth tended to be variable, it is difficult to ascertain what type of daily exposure might have been typical. It is the conclusion of this study that certain aspects of handling the cloth are capable of generating significant high concentrations of asbestos fiber that would be potentially hazardous to worker health. Environmental Sciences Department Certified/Comprehensive Practice EAL Corporation ATMOSPHERIC SAMPLES FOR ASBESTOS FIBERS for Asbestos Cloth Analysis Project for Law Offices of Kenneth Carlson 12/4/81 Sample Location Sample Time Start/Stop Measured Concentrations fibers/fields fibers/cc Personal sample on Mr. Glen Brown ripping asbestos cloth Area sample at 1.5 meters above floor on left side in demonstration area 1352/1413 1453/1509 1340/1515 126 (40) 120 (20) 308 (20) 5.8 13.7 6.3 The CAL/OSHA "action" level for asbestos exposure is 0.1 fibers/cc. The CAL/OSHA and FED/OSHA PEL for asbestos fibers is 2.0 fibers greater than 5 micron per cubic meter (fibers/cc). The CAL/OSHA and FED/OSHA ceiling limit is 10.0 fibers/cc. ANALYSIS OF ASBESTOS CLOTH FOR 2 ASBESTOS for Law Offices of Kenneth Carlson 12/8/81 Sample Z Asbestos/type Z Other Identifiable materials Strip from roll of asbestos d o t h 90-952 chrysotile 5-102 cellulose Bulk sample of dust from bottom of box < 12 trace chrysotile holding the cloth 20-302 70-802 miscellaneous particles (cellulose, synthetic fibers) miscellaneous particles (quartz, feldspar, calcite vermiculite, clays) 1 EAL Corporation APPENDIX 1 EAL Corporation 1 J 11 ~ Hi)j 5X?- I:nNtT m tFtoOmM M 5640002671569 ID 1 A MTZ 90 -- 1 It ^ P tO FROM }T{X Mq>Un fc I n m Uoo 5 quantity >>(|*<iioouuiiVsqiiiicioo4iui4ta||h4DD:lAAiuJnnlt*i j4 Uiw4XuAuI4) 4;4 c i>niiiiAl ? i mac OBnii tct > = tfOtOoiDlo - *i |a m TO 0221 2070 0023 5X mohs wto e OmAlK w 1 ___ X ,,_ i ____ ___________ &-- i -- _________ i____ ____ i_________ - 1 1 ____ i i. i --t - a a _ i --------- 1 SM# TO M A M FOR P R O JK 1 tar* la land Naval Shipyard Mr. George E . Cnss-nr da 540, Supply Dept* 'al la j o , CA 94592 U tH O U M LOCATION m i UNIT CMBO RACK EAL Corp, Richmond, UNII tWUOMl UNIT CUH 2030 Wright CA 94804 U 9C MM 1C Avo. e KSBOHT IA T I Aabeatoa L itig a tio n 0 OOCUHiRI IMI QUANTITY ORTI CORO o snmu in ontmut ko nu M f J K l RMGMT CLASSICADON NOMENCLATURE 130i NO R0 U V ITIM NOMENCLATURE . x Aabeatoa Cloth / f /, /v>, rVRf ORCONIAMER(S) TOTAL MflOMT M V K TE S IT ANO 0ATI "B CiltiHlnJ KWTlctT H lit TflfAl DOCIA44 I d i . 1 t J c /iC S tld U M s f? baega i.o</Dept. / c H s c (U o c & o 2 roll 2 NO. 01 CONAM i{S) to tal CURE en i l<"rtv#r SO; i* / - # > - w a s eorge E . Caeagr. W AM HOUSi LOCATON TO S1 M IT IU IO N A M M U Sane aa" B above cc 00 DATI IHMO 11 1VuLliorlreClopi ta) lane .14 aaaivtii ugnatu (and oatii us Dtpt of Ju a tlce l t r Oct 5 .di George E . Caaagr >K X m 1140-- 1 I 14 JUKIO H OF TJAN04MAT M UUD h 0103 i f -ou- leso worn iANAuno SSL. oiv,,`i n m n m p v Wk\ rftrpnriHnn boo iMOa uU NnI ITIM M I A it m c u n DOCUMENT 5 ? <Y APPENDIX 1 ? EAL Corporation BILLING INSTRUCTION FORM Environmental Sciences Department SUMMARY Date: n . Customer Name: Dept. 22 Dept. 23 Laboratory W.O. Number *7 ~l 0 / Field*-Services W.O. Number >2-01 M*] Grand Total Due from Client $ l2,Q>, o o $ IZ(oS,i>v $ l \ , t >o Billing Instructions: Check One Bill Grand Total Only X Bill Dept.Totals Bill Detail Summary should be prepared by Project Manager PRELIMINARY LAB DATA REPORT AND BILLING INSTRUCTIONS y BILL TO: h?o ADDRESS: ATTENTION \ir~jlu. ( L d U f ^ L&7_ 12^0 RECEIVER NO_______ P.O. NO_____________ PROGRAM MANAGER: FREIGHT: $ WONRUKMOBRERDER CUSTOMER NUMBER lD3IMr) - ? y z9 / ITEM QTY. SET NUMBER DATE RECEIVED 14 24 3S DES(SCARMIPPTLIEO.NTYOPFE.LAABNOARLYASTIOSR. YETWC.O) RK I) K COM I YI'IHG: DDAUTEE ESETILIMLIANTGED 4G PERACICHE. 1 3 7 ( L x ,0 a V yCl- ''fV G *h<*tcj AiVw & <`H-- Y V) I & *~ d l.**'* Ay^--------------------------------------- 3 ! i BILLIf APPRO\ TOTAL ITEM NO. HRS. 1 P DESCRIPTION OF FIELD WORK -- ^ w tness Exhibit 07^/0 Kathy Ktisrjw RJthstein Pie ni. " - S/HRS. TOTAL 1 1 EAL Corporatlor Field Services . 1 *> *'**' -- 'j-- Customer Name: Customer Number: Employee Name - A v i. W.O. No. Description of Work It c 1 y * f : i' l< j-. I .. .-'. -r ", y * f j : t . . I.D. No. Date Hrs. Rate per Hour Direct $ Marked up $ $ Total ' i - 1 '/ ` / / 1 Total Labor i . Expenses Reimbursable Travel: Airfare Mileage Auto Rental - EAL Van Commercial Per Diem Lodging Reproduction Computer Other (Describe) .* t O .*- \ v . Detail $ Total _________ E x h ib it JW itness Kathy K u s rw P as. Date e R othsiin Contracting Sub-Contractor ( ) Labor (Hrs. & Rate) (". 1 1 Expense , ,vi <-/ v! Htb T<-^1 J 1' / .2 ; *i . a : * * Total Expense GRAND TOTAL -</> 1, J $ .- " fr - ^ -- ~~ 3 MHIfiiii UUMttHHBttijiHHhn xhM 5L? finaw_______ _ _____ Kattiy Kuwav Rothstoto _________ Pp. Oats 1 . Environmental Analysis Laboratories Customer: W. O . No: RAW DATA o / y ?-. ry z k _______________Date Received:________ !Z~ V - g / ( ________________Due Date:______________ / 2 ~ )> i Okay for Typing:_______________________ CP362BB Environmental Analysis Laboratories RAW DATA Customer: _____________ Date Received: | W. O . N o :_ J iZ jL & liiS _______________________________ Due Date:_____________________________ Okay for Typing:___________________ CP3628B ES-3 A c. * \\3 C o a M ivs, p b C A ^ p C<\ hb*Ajhr\. : / f / f pu*J. V o^ . ^ clo^pJ -CckJL } > u b b ^ e / n ^ lr' /riSW**tn\&e\{ . tw ^ ocurrJLjU^ Fl-ous i S'S' .5 & J W a V it 1 i . ____________ S D *JL e% i // & SoosH z m v /z . 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