Document RJD6VmmkZoxLvKdmQOyw3V7ev
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Boelter & Yates
environmental cntfiiiccts and .scientist!!
April 27, 2001
Mr. James K. Toohey Attorney at Law Ross & Hardies 150 N. Michigan Avenue Suite 2500 Chicago, IL 60601-7567
Boelter A Yates, Inc.
PmSaoed end ConMorkial
Attorney Work Product
VIA FAX 312/920-8139
I MX) Higgins Rond Snilc 301
Park Ridge. Illinois 60068-5772
847/ 692-4700
Pun
847/ 692-3127
Re: Kewanee Boiler - Burner Range Testing BYl Project #2215B-6515
Dear Mr. Toohey:
Enclosed are two (2) copies of our report entitled - Fiber Release Rate Study. Burner Flange Gasket Removal Kewanee Boiler.
We appreciated the opportunity to have assisted you with this Important project. If you have any questions or need additional information, please contact me.
Direct Dial 847/685-9221 E-Mai: dpadmzaQboeltar-yalat.com
Enclosure
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Boelter & Yates, Inc.
NO
H
FIBER RELEASE RATE STUDY BURNER FLANGE GASKET REMOVAL
KEWANEE BOILER
April 27, 2001 BYJ Project #2215B-6515
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TABLE OF CONTENTS
EASE
EXECUTIVE SUMMARY................................................................................................................1 Objectives.......................................................................................................................... 1 Background........................................................................................................................ 1
Sample Results.................................................................................................................. 1
Bocller &. Yates, tnc. NOTES
METHODOLOGY.......................................................................................................................... 2 PCM Sampling Procedure................................................................................................ 2 "Personal* Samples........................................................................................................... 2 "Average Room Air" Samples ..........................................................................................2 `Background A.r" Samples - PCM & TEM Sampling ..................................................... 2 PCM Light Microscopy Analysis........................................................................................3 Electron Microscopy Analysis ..........................................................................................3 PLM Light Microscopy Analysis........................................................................................3 Statistical Comparisons.....................................................................................................4 Laboratory Accreditation.................................................................................................. 4
DISCUSSION OF FINDINGS ....................................................................................................... 5 Isolation Test Chamber.....................................................................................................5
Background Sampling Results.......................................................................................... 5 Burner Flange and Gasket .............................................................................................. 6 Flange Disassembly ......................................................................................................... 7 Sampling Results During Test.......................................................................................... 7
CONCLUSIONS..........................................................................................................
9
APPENDICES A - Compilation Spreadsheets and Graphs - TESTING RESULTS B - Compilation Spreadsheets - PRE-TEST BACKGROUND RESULTS C - PCM Laboratory Reports D - TEM Laboratory Reports E - PLM Bulk Sample Report
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FIBER RELEASE RATE STUDY BURNER FLANGE GASKET REMOVAL
KEWANEE BOILER
EXECUTIVE SUMMARY
Objectives
The purpose of the study was to determine the concentration of fibers in the air while removing a burner flange gasket from a Kewanee Boiler.
Boelter &. Yates, Inc.
NOTES
T
Background
The study was performed using the Intact burner flange of an old Kewanee boiler.
The study was conducted in an isolation chamber to eliminate outside influences. The study simulated activity associated with removing the burner and associated gasket. The gasket was scraped free of the flange using a fiat blade scraper (a.k.a. putty knife).
The study was conducted on April 18,2001 by Mr. Dan Podraza. This report presents the results of the study described herein.
Sample Results
All samples measured concentrations of fibers in air substantially below the U.S. Department of Labor Occupational Safety and Health Administration (USDOL-OSHA) 8 hour Time Weighted Average (TWA) Permissible Exposure Limit (PEL) of 0.1 fibers per cubic centimeter (f/cc). Sample results are presented in the accompanying tables.
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METHODOLOGY
PCM Sampling Procedure
Boelter &. Yates. Inc.
<H
Samples were collected and analyzed by Phase Contrast Microscopy (PCM) following NIOSH N Method 7400. Air was drawn through a 25mm, conductive cowl cassette with a 0.8 micron mixed cellulose ester (MCE) filter for collecting airborne particulate. The cassette was connected to a dedicated Gilian or equivalent servo-drive pump. The pump was used to maintain a flow rate of two (2) liters per minute (ipm) for both personal and area room air samples.
A Brooks rotometer was used to calibrate the pumps prior to and post sample collection. The rotometer was calibrated against a primary standard.
The samples were sealed, labeled and shipped to the laboratory for analysis. Samples were signed, placed In an Airborne shipping envelope, sealed, tracked by Airborne, and arrived at the laboratory by next day air.
Personal" Samples
Personal samples were collected during the testing by attaching the cassette in the breathing zone of the individual performing the work for the duration of the test. The sampling pump was worn on the individuars belt.
"Average Room Air" Samples
The isolation chamber was subdivided into 4,140 one cubic foot (Iff*) modules. For purposes of identification, each module was assigned a cSsCrete, consecutive number.
To determine the `average room air* concentration during the testing, eight (8) of the modules were selected using a random number generator. A sample cassette was located in the center of the respective module for the duration of the test.
"Background Air" Samples - PCM & TEM Sampling
Prior to conducting the test, the room was sampled to verify cleanliness. Five (5) samples were collected inside the isolation chamber following AHERA Protocol. Three (3) blanks were also reserved. Analysis was performed by transmission electron microscopy (TEM) following AHERA protocol.
Just prior to collecting the samples, a "leaf blower" was utilized to aggressively disturb the isolation chamber's interior surfaces. During the background sampling, a fan was used to circulate the air in the room.
Air was drawn through a 25mm, conductive cowl cassette with a 0.45 micron mixed, cellulose ester (MCE) filter for collecting airborne fibers. The cassette was connected to a dedicated Gast high volume pump. The pump was used to maintain a flow rate of 10 liters per minute (Ipm). A BGl rotometer was used to calibrate the pumps prior to, during, and post sample collection. The rotameter was calibrated against a primary standard.
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Additionally, five (5) PCM air samples were collected to determine background fiber
concentrations prior to testing within the chamber. The cassettes were located in the same
areas as the AHERA samples; however, PCM sampling and analysis methodologies were
followed.
Boeller & Yal, Inc.
NO
Both PCM and TEM samples were sealed, labeled and shipped to the laboratory for analysis. Samples were placed in an Airborne shipping envelope, sealed, tracked by Airborne, and arrived at the laboratory by next day air.
PCM Lioht Microscopy Analysis
Samples were analyzed in accordance with NIOSH Method 7400. Total fiber counts were determined by phase contrast microscopy (PCM) in accordance with the NIOSH Manual of Analytical Methods, Fourth Edition, dated 8/15/94, A Rules. Values for PCM analysis are provided in the Appendix A and Appendix B spreadsheets.
The only fibers which are counted are those which are longer than 5 microns and have a length to width ratio equal to or greater than 3:1. PCM analysis counts all fibers meeting the specified dimensions. The analysis is not specific for asbestos but is the method specified to be used in the OSHA regulations.
The PCM laboratory reports are presented in Appendix C.
Electron Microscopy Analysis
AHERA Protocol transmission electron microscopy (TEM) analysis was performed on all background samples to verify the cleanliness of the isolation chamber prior to beginning the test The sample analysis was performed as described in the Federal Register Vol. 52, No. 210, the Asbestos Hazard Emergency Response Act (AHERA Protocol).
Small squares were cut from each filter, processed appropriately, placed onto 200 mesh copper screens (grids) and transferred to a modified Jaffe Wick Washer containing acetone solvent. After the appropriate processing time, the grids were examined with a JEOL1200EX or 100CX TEM. Grid openings from each sample were scanned at 20.000X. When fibers or structures of various shapes were encountered, they were assessed for morphological characteristics and crystalline structure with selected area electron diffraction (SAED).
The TEM laboratory reports are presented in Appendix D.
PLM Uoht Microscopy Analysis
Bulk samples were analyzed for asbestos by Polarized Light Microscopy (PLM) In accordance with guidelines set forth in the EPA Method for Determination of Asbestos in Bulk Building Materials, U.S. EPA/600/R-93-116 (7/93 Edition).
The PLM laboratory reports are presented in Appendix E.
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Statistical Comparisons
Data was formatted in spreadsheets for analysis. Statistical functions were performed including
maximum, average, minimum, standard deviation, and variance.
Boeiter & Yates, inc. NOTES
The spreadsheets in Appendices A and B present the data and summarize the statistical analyses performed.
Laboratory Accreditation
PCM and TEM air samples were shipped to and analyzed by R. J. Lee Group, Inc. In their Monroeville, Pennsylvania laboratory. R. J. Lee is accredited for TEM analysis by the National Institute of Standards and Technology (NIST) under the National Voluntary Laboratory Accreditation Program (NVLAP) as Lab #101208. R. J. Lee is also accredited for PCM analysis by the American Industrial Hygiene Association (AIHA) as Lab #8204.
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DISCUSSION OF FINDINGS
Isolation Test Chamber
Testing was performed in an Isolation Test Chamber built at the offices of the Hillcrest Construction Corporation. The chamber is 23 feet wide by 20 feet deep and is 9 feet in height. The chamber was constructed of 6 mil polyethylene sheeting to physically separate the activity being tested from `outside of the chamber" influences. The chamber schematic is
shown in Figure 1.
The chamber was a static environment. During the test, there was no air movement into the chamber and there was no air movement out of the chamber. Entry into the chamber was only through an access airlock.
Figure 1 - Isolation Test Chamber
Background Sampling Results
Prior to conducting any tests, the Isolation chamber was systematically cleaned.. A waterborne encapsulant was used at the end of the cleaning process to "lock-down' remaining fibers. Following the initial cleaning sampling shown in Figure 2, a series
of air samples were collected and analyzed from five (5) area sampling locations in accordance with NIOSH 7400 protocol.
Final cleaning background samples
were collected under `aggressive' conditions with analysis by TEM in
accordance with AHERA Protocol. Background air samples were collected and analyzed from five (5) area sampling locations in accordance with AHERA protocol.
Figure 2 - Initial cleaning sampling arrangement.
Boellcr & Yates, Inc NOTB S
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Results of the Pre-Test Background sampling are shown in the following table:
STATISTICAL FUNCTION
MAXIMUM AVERAGE MINIMUM STAND. DEV. COUNT
Aggressive Air TEM (s/mm1) - Background -
<15.4 <15.4 <16.4
0 5
Aggressive Air PCM (f/cc) - Background -
*********************************
0.034 0.024 0.015 0.006
S
Boelter St Yale*, Inc. NOTES
The levels met the AHERA TEM Clearance Criteria of an average of less than seventy structures per millimeter squared (<70 s/mm3) for the 5 samples and the room was considered clean. Nevertheless, there was a residual total fiber count of 0.024 f/cc determined to be cellulose. Results are shown in the spreadsheet presented in Appendix B.
Burner Flange and Gasket
The Kewanee Boiler Burner Range and Gasketwere obtained from an old warehouse on the near west side in the City of Chicago.1 See photo in Rgure 3.
The piece of boiler face was cut from the unit using an acetylene/oxygen torch. The Figure 3 - Boiler nameplate. extraction was performed under the direction of Mr. Dan Podraza (See Rgure 4). Following removal of the flange, the exterior of the flange and attached piping was HEPA vacuumed and wet wiped to remove loose dust, corrosion
and fiberglass. The extracted blower/flange/gasket/boiler face was transported to the testing location in Mr. Podraza's enclosed pickup truck. The gasket and flange assembly remained intact during the removal, transportation and subsequent installation on a mock-up face plate.
Figure 4 - Burner flange.
The name plate displays the following information: American Standard Products: Industrial Division - Detroit: Kewanee Compact Square Heat Generator; 4250 MBH; 126.9 hp; Max pressure; 151b steam; 30lb water; Series No. IX; Size M-425-FG; Serial Number N1463; Order 4&M1846A.
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As shown in Figure 5, the gasketing material was bulk sampled to
determine asbestos content. The PLM analysis verified it to be
composed of 50% chrysolite asbestos by PLM analysis of a bulk
sample (See Appendix E).
Boelier A Yates. Inc.
Notes
Flange Disassembly
it Figure 5 - Gasket sample.
A mock-up of the original boiler front was constructed of plywood and wrapped in plastic sheeting. The boiler burner flange was mounted to this mock-up. See Figure 6.
The process of disassembling the flange and gasket was performed according to methods described by a boiler repair contractor. Each step to the process was video recorded. The
flange disassembly and gasket removal was completed in approximately one (1) hour and twenty (20) minutes.
Personal and average room air samplers were started prior to beginning the testing. The samplers were left inside the test chamber to run for 480 minutes, and thus represent an eight hour exposure.
Sampling Results During Test
Results of 8Hour Time-Weiahted Average Permissible Exposure
Limit sampling shown in the following table:
m (nmr.-Mer HmrCNM*
------ OJJMfftimvJl
STATISTICAL
PCM Analytic by NIOSH 7400 (Total Wee)
c3j
FUNCTION
Personal Samples- Average Room Air
MAXIMUM AVERAGE MINIMUM STAND. DEV. COUNT
................
002? 002? 0.02? 0.000
2
0.046
0.065
0 025 0.006
B
KMIAoerTIM
'nwto&fe ixpat rre tint'
FOJ prior
All sample results indicate the concentrations to be well below the current OSHA Permissible Exposure Limit of 0.1 f/cc as sampled over an 8-hour time-weighted average period of time.
Refer also to Figure 7 for a graphical presentation of the air sample results. The Appendix A spreadsheets and charts present and depict the results of the testing in detail.
B " ,B , , ,3*
Swnplt Number gRandom Area fvjPtrsonaihr-TWA
Figure 7 - Graphical presentation of results
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Boelter & Yates, Inc. NOT US
Figure 8 - Gasket material removed from the burner flange.
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Fiber Release Rate Study - Burner Flange Gasket Removal, Kewanee Boiler April 27, 2001 Paged
CONCLUSIONS
An old intact Kewanee Boiler woven asbestos burner gasket was disassembled within a test
chamber. After disassembly of the burner flange, the gasket was scraped dean using a flat ,ioe,t*r & Yates-,nc-
blade scraper (a.k.a. putty knife). Eight (8) room air samples and two (2) personal samples were N 0
E 51
collected during the processing.
AH sample results show the airborne concentrations of fibers to be well below the current OSHA Permissible Exposure Limit of 0.1 f/cc as sampled over an 6-hour time weighted average period of time.
Respectfully submitted,
BOELTER & YATES, INC.
Rt**Hne*\2215a4J1S Beta Burner.wpa
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APPENDIX A Compilation Spreadsheets and Graphs
TESTING RESULTS
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ASI Kewanee - "Boiler Burner Gasket"
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APPENDIX B Compilation Spreadsheets PRE-TEST BACKGROUND RESULTS
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APPENDIX C PCM Laboratory Reports
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APPENDIX D TEM Laboratory Reports
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Test Report
Total Asbestos Structure Concentration TEM AHERA Analysis
Project L A H 102571-29
385 385
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Client Name Project Number RJL Sample # Client Sample #
Boelter & Yates, Inc,
LAH10257I-29 0118554HT AHERA-BGD-Ol
Microscope
2000 PX
Accelerating Volt 120 Kv
Magnification 21000X
Analyst
BF
EDS Disk
Structure FteW Fiber < 5 pm > 3 )m Type______Morph
10 20 30 40 50 60 70 80
NSD NSD NSD NSD NSD NSD NSD NSD
RJ Lee Group , Inc Count Sheet
RJL QA Number Grid Openings Total Asbestos Total Non-Asbestos
Filter
Volume Grid Opening Area
Amphibole
EDS Phoiu 5AED
Type
HQ19302 8 0 0 CE 385 mm2 1200.0 Liters 0.0081 mm2
Comment
NSD - No Structures Detected
Page: 1 of I
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Client Name
Boelter & Yates, Inc.
Project Number LAH102571-29
RJL Sample # 0118555HT
Client Sample # AHERA-BGD-02
Microscope
1200 EX
AcceleratingVolt 120 Kv
Magnification 20000 X
Analyst
LEH
EDS Disk
Structure Field Fiber < 5 pm & 5 pm Type
Morph
)0 20 30 40 50 60 70 80
NSD NSD NSD NSD NSD NSD NSD NSD
RJ Lee Group , Inc Count Sheet
RJL QA Number Grid Openings Total Asbestos Total Nan-Asbestos
Filter
Volume Grid Opening Area
Ampbibole
EDS Photo SAED
Type
HQ19302 8 0 0 CE 385 mm 2 1200.0 Liters 0.0081 mm *
Comment
NSD - No Structures Detected
Page: 1 of 1
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1 B47 692 3127;
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Client Name
Boeder & Yates, Inc.
Project Number LAH102571-29
RJL Sample # 0118556HT Client Sample # AHERA-BGD-03
Microscope
1200 BX
AcceleratingVolt 120 Kv
Magnification 20000 X
Analyst
LEH
EDS Disk
Structure
Reid Fiber < 5 pm 5 pm Type______Morph
10
20 30 40 50 60 70
NSD NSD NSD
NSD NSD NSD NSD
SO
NSD
R] Lee Group ,Inc Count Sheet
RJL QA Number Grid Openings Total Asbestos Total Non-Asbestos Filter Volume Grid Opening Area
Amphibolc EDS Pholo SAH3______Type
HQl 9302 8 0 0 CE 385 mm2 1200.0 Liters 0.0081 mm2
Comment
NSD - No Structures Detected
Page: 1 of 1
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sent by: BOELTER & YATES INC
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05/01/01 16:30; Jedhx #957;Page 29/32
Client Name
Boelter & Yates, Inc.
Project Number LAH102571-29
RJL Sample # 0118557HT
Client Sample # AHBRA-BGD-04
Microscope
2000 FX
Accelerating Volt 120 Kr
Magnification 21000X
Analyst EDS Disk
BP
Structure Field Fiber <3pm 5pm Type
Morph
10
NSD
20
30
NSD NSD
40 50 6a 70 80
NSD NSD NSD NSD
NSD
RJ Lee Group , Inc Count Sheet
RJL QA Number Grid Openings
Total Asbestos
Total Non-Asbestos
Filter Volume Grid Opening Area
Amphibolc
EDS Photo SAED
Type
HQ19302 8 0 0 CB 385 mm2 1200.0 Liters 0.0081 mm ^
Comment
NSD - No Structures Detected
Page: 1 of I
28143
Sent by: BOELTER & YATES INC
1 847 692 3127;
05/01/01 16:30; Jfetigx #957;Page 30/32
Client Name
Boeltcr & Yates, Inc.
Project Number LAH102571-29 RJL Sample 0118558HT Client Sample # AHERA-BGD-05
Microscope
1200 BX
AcceleratingVolt 120 Kv
Magnification 20000 X
Analyst
LEH
EDS Disk
Structure Field Fiber <5 pm 5 pirn Type______Morph
10 20 30 40 50 60 70 SO
N5D NSD NSD NSD NSD NSD NSD NSD
RJ Lee Group , Inc Count Sheet
RJL QA Number Grid Openings Total Asbestos Total Non-Asbestos
Filter
Volume
Grid Opening Area
Amphibole
EDS Photo SABD
Type
HQ19302 8 0 0 CE 385 mm2 1200.0 Liters 0.008! mm2
Comment
NSD - No Structures Detected
Page: 1 of I
28144'
Sent by: BOELTER & YATES INC
1 847 692 3127;
05/01/01 16:30; Jet&x #957;Page 31 /32
APPENOIX E PLM 8uH< Sample
28145
Sent by: BOELTER & YATES INC
1 847 692 3127;
05/01/01 16:30; Jet&x #957;Page 32/32
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