DRC-2011-007147 - 0901a0688025afd9

State of Utah
GARY R. HERBERT
Govemor
GREG BELL
Lieutenant Governor
Department of
Environmental Quality
Amanda Smith
Executive Director
DIVISION OF RADIATION CONTROL
Rust Lundberg
Director
RC-2011-007147
July 12,2011
David Frydenlund, Vice President Regulatory Affairs and Counsel
Denison Mines (USA) Corp.
1050 17* Street, Suite 950
Denver, Colorado 80265
RE: Radioactive Material License (RML) Number UTI 900479: Health Physics Inspection
RADMOD-ENVIRO-01
Dear Mr. Frydenlund:
On June 7 & 8,2011, an inspection was conducted at your facility by Ryan Johnson, a
representative ofthe Division of Radiation Control (DRC) of the Utah Department of
Environmental Quality and he was accompanied by two NRC IMPEP Team members..
Observations from the inspection were discussed with Dan Hillsten, David Turk and Ryan Palmer
at the closeout meeting. The inspection was an examination of the activities conducted in your
facility as they relate to compliance with the Utah Radiation Control Rules, the license conditions
of the RML UT1900479 and Federal Regulations. The inspection consisted of an examination of
representative records, interviews of personnel, and observations by the inspector. During the
closeout meeting the DRC inspector made recommendations regarding items for improvement.
These recommendations can be found at the end of the inspection report under recommendations.
Enclosed is the inspection report regarding this inspection for your review. The DRC would like
to thank the Mill staff for their cooperation regarding this inspection. If you have any questions
conceming this letter contact Mr. Ryan Johnson [phone].
UTAH RADIATION CONTROL BOARD
Rusty Lundberg, Executive Secretary
RL/RJ:rj
Cc: David Turk, Site Radiation Officer
Enclosures
195 North 1950 West • Salt Lake City, UT
Mailing Address: P.O. Box 144850 • Salt Lake Gity, UT 84114-4850
Telephone [phone] - Fax [phone] • T.D.D. [phone]
www.deq.utah.gov
Printed on 100% recycled paper
INSPECTION REPORT
Inspection Module: RADMOD-ENVIRO-01: Effluent Monitoring
Inspection Location: Denison Mines-White Mesa Uranium Mill, Blanding Utah.
Inspection Items: Data collection of Effluent Monitoring
Inspection Dates: June 7 and 8, 2011
Inspectors: Ryan Johnson, Utah Division of Radiation Control (DRC)
Personnel Contacted: Dave Turk (Radiation Safety Officer (RSO)), Ryan Palmer (Environmental
Coordinator), Kathy Weinel (Quality Assurance Manager) via email
Goveming Documents:
• UACR313-I5
40 CFR 61 Appendix B Method 115
NRC Regulatory Guide 8.31
NRC Regulatory Guide 4.14
• Radioactive Materials License (RML) UT1900479
RML UT1900479 License Renewal Application (2/28/07) Appendix E
(Radiation Protection Manual)
Opening Meeting
Denison Mines:
Dave Turk (Radiation Safety Officer)
Ryan Palmer (Environmental Coordinator)
Rich Bartlet (Mill Manager)
Dan Hillsten (Incoming Mill Manager)
Utah DRC:
Ryan Johnson (Inspector)
NRCIMPEP Team
Muhamrnadali Abbaszadeh, State of Texas, Commission on Environmental Quality
ICristen Schwab, State of Washington, Department ofHealth, Office of Radiation Protection
During the opening meeting, the inspector discussed the inspection items; follow-up items and
documentation to be reviewed during the inspection. All areas of the Mill were in operation during
this inspection. The Mill staff reminded the inspector ofthe safety requirements for the Mill.
1 of Page 5
U:\rad\COMMON\Uranium millsM le(2)UT1900479 Denison Mines - White Mesa UMilI\HP Inspection modules\201 IMnspection ReportsMnspection
Report RADMOD-ENVIRO-01 6-7-11 RJ rev 2.doc
Inspection Summarv
The inspection consisted of employee interviews, review of documentation and a mill tour. The
following discussion provides more detail of the specific items.
Itemi. Effluent Monitoring Data Collection:
NESHAP Sampling: The Mill was conducting NESHAP sampling during the time of the
inspection. The inspector reviewed the requirements for this sampHng event and discussed them
with the subcontractor who was performing the sampling. (NESHAP sampling is not part ofthe
Effluent Monitoring report but since it was being done at the time of the inspection the inspector
included it in the inspection.)
Observations: The DRC inspector observed that the sampling protocols that are outlined in 40
CFR 61 Appendix B Method 115 were being followed.
The NRC IMPEP team observed that the personnel who were changing the activated carbon from
the collection devices into the sample containers were not wearing disposable gloves and there was
no respiratory protection being used and carbon dust was observed in the breathing zone ofthe
personnel.
Radon Monitoring: The inspector was able to observe radon monitoring at five ofthe six
monitoring stations. (The inspector did not go to BHV-3 but has seen the monitoring location
during another inspection in November 2010).
Observations: The DRC inspector observed that the appropriate monitoring devices were being
used at each of the monitoring locations visited.
Particulate Air Sampling: The inspector was able to observe air particulate monitoring at five of
the six monitoring stations. (The inspector did not go to BHV-3 but air particulate monitoring is
not done at that location. Air monitoring was suspended at this location by the NRC in 1995. It
was determined by the NRC that the station was not needed and sufficient data had been collected
from that location to provide a representative background for the Mills air monitoring program.
The Environmental Coordinator also informed the inspector during the inspection that BHV-3 was
being vandalized and that was another reason for the station to be removed).
Observations: The DRC inspector observed that the appropriate monitoring devices were being
used at each of the monitoring locations visited. The inspector did question if the intake ofthe
sampling stations was too high (approximately eight feet) but there is no regulatory requirement.
Stack Sampling: Stack sampling was not being performed during the time of the inspection and
was not observed as part of this inspection.
Ganima Monitoring: The inspector was able to observe gamma monitoring at five ofthe six
monitoring stations. (The inspector did not go to BHV-3 but has seen the monitoring location
during another inspection in November 2010). The inspector also was able to observe gamma
monitoring location throughout the Mill facility during the Mill tour.
2 ofPage 5
U:\rad\C0MM0N\Uranium millsM Ie(2)UT 1900479 Denison Mines - White Mesa UMill\HP Inspection modules\201 IMnspection ReportsMnspection
Report RADMOD-ENVIRO-01 6-7-11 RJ rev 2.doc
Observations: The DRC inspector observed that the appropriate monitoring devices were being
used at each of the monitoring locations visited.
Soil Sampling: The inspector was able to observe approximate area where soil sampling is done at
five of the six monitoring stations. (The inspector did not go to BHV-3). The inspector discussed
with the Environmental Coordinator how this sampling is done.
Observations: The DRC inspector was able to determine that the appropriate soil monitoring was
being performed at each of the monitoring location.
Vegetation Sampling: The inspector was able to observe approximate areas where vegetation
sampling is done. The inspector discussed with the Environmental Coordinator how this sampling
is done.
Observations: The DRC inspector was able to determine that the appropriate vegetation sampling
was being performed at each of the monitoring location.
Surface Water Sampling: The inspector was able to observe approximate areas where surface
water sampling is done. (Both West water and Cottonwood creeks were dry at the time of the
inspection and the inspector was not able to observe surface water sampling) The inspector
discussed with the Environmental Coordinator how this sampling is accomplished.
Observations: The DRC inspector was able to determine that the appropriate surface water
sampling was being performed at each of the monitoring location.
Meteorological Monitoring: The inspector was able to observe the meteorological monitoring
station (Next to BVH-1). The inspector discussed with the Environmental Coordinator on how
meteorological monitoring is done. The meteorological data is recorded onto a hard drive in the
monitoring station. The data is downloaded into a data logger and then is taken back to the Mill
where it is downloaded onto a computer to be used for reporting.
Observations: The DRC inspector was able to determine that the appropriate meteorological
monitoring was being performed at each of the monitoring location.
Deficiencies: None
Item 2. Documentation:
Effluent Monitoring Documentation: The Semi-annual Effluent Monitoring reports reference
NRC Regulatory Guide 4.14 Radiological Effluent and Environmental Monitoring at Uranium
Mills, The Inspector compared the Mill's Effluent Monitoring records with NRC Regulatory
Guide 4 A4 Sectionl Recording and Reporting Results.
Observations: The DRC inspector was able to determine that the Mill's records h^d the
information that is outlined in NRC Regulatory Guide 4.14.
3 ofPage 5
U:\rad\COMMON\Uranium millsM le(2)UT1900479 Denison Mines - White Mesa UMillMiP Inspection modules\20MMnspection ReportsMnspection
Report RADMOD-ENVIRO-Ol 6-7-11 RJ rev 2.doc
Effluent Monitoring Spreadsheets: The inspector requested to see the spreadsheets and
calculations that the Mill uses to calculate the data that is reported in the Semi-annual Effluent
Monitoring. The RSO informed the inspector that all of the raw data is sent to Denison Mines
Corporate office in Denver and the spreadsheets and calculations were not available. The inspector
contacted (via email) the Quality Assurance Manager at the Denver office and asked if a copy of
the spreadsheets and calculations used for the Semi-annual Effluent Monitoring Report.
Observations:
The DRC inspector determined that the appropriate calculations were being used and that cells
with formulas were password protected.
Deflciencies: None
Item 4. Mill Tour: The inspector and the members of the NRC IMPEP team walked through the
restricted area on a general site tour. The tour included the ore pad, the ore receiving trailer, the
new decon pad, the mill, the altemate feed circuit, and the tailings ponds.
Observations:
The NRC IMPEP team observed that the Kerosene and the Ammonia levels in the Mill and the SX
appeared to be elevated. They also observed that a couple of Mill personners OSL badges were on
backwards and the decon personnel were not wearing face shields. The DRC inspector shared
these observations in the closeout and requested the RSO send monitoring results of Kerosene and
Ammonia level within the Mill facility to the inspector.
The inspector requested the non-radiological air monitoring logs from the Mills RSO and
compared the reported concentrations for Ammonia, Hydrogen Fluoride, Chlorine and Kerosene
against the National Institute for Occupational Safety and Health (NIOSH) limits in the NIOSH
Pocket Guide to Chemical Hazards. The inspector determined that the reported concentrations are
below regulatory action levels and no further action was taken. Non-radiological air monitoring is
done with Draeger tubes.
Item 5. Follow-up Items:
Area Air Sampling: The recommendation from the last inspection of air filters in the breathing
zone of the Mill workers: the RSO informed the inspector that it was being considered by the
Mill's ALARA committee. The recommendation that general air samples should be collected at
the new decontamination pad: the RSO informed the inspector that one sample had been collected
and the DAC value was 0.0. He also informed the inspector that the decontamination pad was put
on the quarterly air monitoring schedule.
1 le(2) Disposal: Part of one shipment had arrived at the Mill but had not been placed in Cell #3.
The Mill was waiting for the rest ofthe shipment. The inspector did review the records and
discuss the records with the RSO.
Employee Exit Monitoring: The inspector was able to observe Mill personnel survey themselves
4 ofPage 5
U:\rad\COMMON\Uranium millsM le(2)UT1900479 Denison Mines - White Mesa UMiUMiP Inspection modules\201 IMnspection ReportsMnspection
Report RADMOD-ENVIRO-01 6-7-11 RJ rev 2.doc
out of the restricted area. All the employees that the inspector observed did it correctiy. During
the last inspection by another DRC inspector the inspector observed that the alarm limits on the
radiological survey meters used by Mill personnel to survey themselves out were not properiy set.
The Mill has now put these meters is a clear plastic box so that the meters cannot be tampered
with. The inspector was able to confirm that the meters were on and the alarm limits were properiy
set.
Deflciencies: None
Closeout Meeting
Denison Mines:
Dave Turk (RSO)
Dan Hillsten (Incoming Mill Manager)
Ryan Palmer (Environmental Coordinator)
Utah DRC:
Ryan Johnson (Inspector)
NRCIMPEPTeam
MuhammadaH Abbaszadeh, State of Texas, Commission on Environmental Quality
Kristen Schwab, State of Washington, Department of Health, Office of Radiation Protection
During the closeout meeting the inspector discussed with RSO the number of air particulate
monitoring stations around the Mill. The inspector questioned, due to the size of the Mill property,
if there were enough BHV stations around the Mill to properly document the effluents from the
Mill's ore pad, stacks and tailings cells.
Findings
None
Recommendations
The following are DRC recommendations regarding items for improvement:
1. The DRC recommends that additional air monitoring stations to be installed North of the Mills
ore pad, stacks and tailings cells.
2. The DRC recommends that an additional air monitoring station be placed South of the ore pad
just outside of the restricted area.
Recommendation for Next Inspection
1. Spills (yellowcake and other materials) being cleaned up in the mill immediately, and
2. Personnel Exit Monitoring.
Prepared By: Ryan Johnson /^^^ll^-—' y '^f-P
(Print Name) ^.^^ (Signature) (Date)
: 5 of Page 5
U:\rad\C0MM0N\Uranium millsM le(2)UT1900479 Denison Mines - White Mesa UMillMiP Inspection modules\201 IMnspection Reports\hispection
Report RADMOD-ENVIRO-01 6-7-11 RJ rev 2.doc
UTAH DIVISION OF RADIATION CONTROL
PIADIATION PROTECTION INSPECTION MODULE
RADMOD-ENVIRO-01
DENISON MINES - WHITE MESA URANIUM MILL
RADIOACTIVE MATERIAL LICENSE UTI900479
References: Radioactive Materials License UTI 900479, NRC Regulatory Guide 8.31, NRC Inspection
Manual: Inspection Procedure 88045 Effluent Control and Environmental Protection, License Renewal
Application Appendix A Environmental Protection Manual, Utah Administrative Code R313-15,
R313-22 & R313-24. Note: This inspection is to focus on data collection. Results are reviewed when
reports are submitted to the PRC.
/ OPENING MEETING
DATE ^-/-//
MEETING MEMBERS
NAME DRC/COMPANY CONTACT INFORMATION
DISCUSSION
£/ y SITE STAFF COMMENTS
1. Observe the NESHAP Monitoring. (40 CFR 61 Appendix B Method 115)
Comments: • Yes • No • NA •
TP C-M!>^ ^ -
"^ /^ Z"
2. Go to each environmental monitoring locations and observe what type of monitoring is being done.
Sampling
Locations
Radon
Monitoring _
Air
.^Sampling
Gamma
Monitoring
Soil
Sampling
Vegetation
Sampling
BHV-1 ^^^^^^
BHV-2 ^.^ NA
BHV-3 NA NA
BHV-4 ^—
BHV-5 NA
BHV-6 1^ NA
Comments: Yes • No • NA
3. During the Mill tour observe gamma monitoring locations. Are they in appropriate areas?/
Conunents: Yes 0^ No • NA •
4. Go to the metrological station and observe what type of monitoring is being done. (Wind speed & dir.)
Commente: Yes • No • NA •
5. Review the most recent metrological report. Are environmental stations located in appropriate areas
based off of metrological data? '
Comments: / / / Yes D No • NA •
6. Go to the surface water sampling locations and if possible observe sample collection.
Comments: \ Yes • No • NA •
7. If time is available, go to each seep sampling location.
Comments: y , / Yes • No • NA •
c(^'^- '^^^ /9r^7 ' • . :
8. Review the environmental monitoring records. Do they record the information outlined in NRC Reg.
Guide 4.14 Section 7 and Mills Environmental Protection Manual? ^
Comments: (Radon Monitoring) ' Yes [3''^o O NA [II
Comments: (Air Sampling) Yes 0'--^<^o Q NA [~~]
Mc^.^-J^cy "^^(1- /Cp<i^J^^/jL^ - ' ;
Comments: (Stack Samf^ling) Yes • NA •
Comments: (Gamma Monitoring) ~ ~" ^ ^ Yes Q-^^lSk) • NA
/^^^^y^^ ^ 6L^/hy ^ ~
Comments: (Soil Sampling) ~~ ' ~~ Yes Q^^o • NA •
Pc:C6^ ^si /^/^C^ : ' . ; '
^ / ^yji-—
Comments: (Vegetatl6n Sampling) ~ Yes Q'^o Q NA Q
y it/ - /> ,/-> y/' //y?
9. Are the appropriate units being used? (R313-15~l 101)
Commejit^:
73
Yes S-<l^^o • NA •
Follow-up Items
10. Obsei-ve workers frisk out. Are workers frisking out correctiy?
Comments: Yes B--1^Iat] NA m
11. Ai^e meters used to frisk personnel outset at the appropriate alami settings? (500 to 750 dpm/100 cm^ )
Meter
Locations
Meter Type &
Serial Number
Meter Alami
Set Point
Meter
Efficiency
Set point
(cpm)/Eff.
Multiply by 2
(50cm^ probe)
dpiTi/100 cm^
Set Point
Admin Gate
Laboratory
West Door
Scale Gate
Comments: Yes 0^ No NA
12. Are the meters on?
Comments: L Yes Q^No Q NA O
13. During the Mill tour observe general air samplers. Are the filters in the breathing zone?
Comments:. (NRC Reg. Guide 8,25) ^ Yes • No • NA •
14. During the Mill tour observe general air samplers. Is general air sampling being done at the new
decon pad? (NRC Reg. Guide 8.25)
Comments: Yes @-^o • NA •
15. An 1 le(2) shipment is scheduled to arrive for the week ofthe inspection (June 6*). Observe the
shipment being placed into Cell #3 and the paperwork. (L.C. 10.5)
Comments: ^ / / Yes Q No • NA •
DATE
CLOSEOUT MEETING
MEETING MEMBERS
NAME COMPANY CONTACT INFORMATION
•
DISCUSSION of FINDINGS
. ' A-J^/^'/i^yf <y^y ^^a^M^ ^y^2at^ -^.'4^^ -^J/[ ^ofiom^ ^
SITE STAFF COMMENTS
— y^4:>^^-€^ ^/c^(<.
yc£>s /ufry^^s
Gas Sampling Log
Date
4/28/10
(nd) non detect
5/11/10
5/11/10
10/15/10
12/1/10
12/16/10
2/21/11
2/22/11
4/1/11
4/5/11
5/18 11
Gas
Chlorine
Ammomia
HF
Chlorine
Ammonia
Acid Gas
Hydrogen Sulfide
HF
HF
HF
vapor on cell 4B
Chlorine
Location & Concentration
Top of emf tank #1 2 ppm
Ground level .5 ppm
Sump pump area <.05 ppm
Center of Alternate Feed (nd)
Van. Precip lab. 10 ppm
Ladder to the roof 25 ppm
Top of #6 leach 2 ppm
Filter belts 5 ppm
Top of the dump tank (nd)
Top of #2 emf tank 10 ppm
#1 and #3 emf tanks both (nd)
Bottom of #2 0.5 ppm
Several other locations (nd)
Inside north door
Old dog house
Between SX & Mill
Above #2 Leach
Above #2 Leach
Dumper
Drum #1 solid
Drum #2 fines
25 ppm
5 ppm
10 ppm
2 to 3 ppm
(nd)
(nd)
2 ppm
(nd)
108B 2hrs of digestion 2 ppm
108B Start of digestion trace
Dumper (nd)
Dumper (nd)
Drum#l fines (nd)
108B solids (nd)
Every gas we have all (nd)
A F. north filter press 0.25ppm
Top inside #lemf tank 20 ppm
Walk way above emf 5 ppm
Sump pump area 1.0 ppm
5/31/11 Ammonia South mill door 5 ppm
Y.C. Precip 25 ppm
Re-Gen Processing Atmosphere Air Checks:
1 May 11,2007 - 10 ppm Acid Gases (in the mist plume)
2 - May 11,2007 - 2 ppm Acid Gases (on top of #4 tank no plume visible)
3 - July 6,2007 - 0 ppm Acid Gases (inside of laboratory near drying oven)
4 - July 6,2007 - 9 ppm Acid Gases (inside of drying oven - white vapor cloud)
CaF2 Atmosphere Air Checks:
1 - September 13,2007 - 3.0 ppm HF (right after the opening of a 5-gallon bucket of the
material)
2 - September 13,2007 - 0 ppm HF (the material wet and then heat applied)
3 - September 13,2007 - 75 ppm HF (dry material when heat \yas applied)
UF4 Atmosphere Air Checks:
1 - September 18,2007 - > 150 ppm HF (right after the opening of the 55-gallGh drum of
the material)
2 - September 19,2007 - 90 ppm HF (after the opening of the 5 gallon bucket)
3 - September 19,2007 - 0 ppm HF (Test 1 with oxidant)
4 - September 19,2007 - 0 ppm HF (80 C - no oxidant)
5 - September 19,2007 - 8.75 ppm HF (Test 3 no oxidanO
6 - September 19,2007 - 0.5 ppni HF (Test 4 during the mixing process)
7 - September 19,2007 - 0 ppm HF (Test 5 during the mixing process)
8 - September 19,2007 - 40 ppm HF (during the addition of CaFz material into
carbonated solution)
Methanol Addition Air Checks:
1 - March 7,2008 - 60 ppm Methanol (during the opening of a drum of material)
2 - March 7,2008 - 0 ppm Methanol (during introduction of material in organic)
3 - March 7,20080 ppm Methanol (during introduction of material in organic)
4 - March 7,2008 - 0 ppm Methanol (during introduction of material in organic)
5 - March 7,2008 - 30 ppm Methanol (after all drums introduce and mixing for 3 hours)
6 - March 8,2008 - 150 ppm Methanol (during the mixing process)
7 - March 14,2008 - 0 ppm Methanol (during the opening of a drum of material)
8 - March 14,2008 - 0 ppm Methanol (during introduction of material in organic)
9 - March 14,2008 - 0 ppm Methanol (during introduction of material in organic)
Hot Work Permit:
1 - April 8,2008 - 0 ppm Methanol south side of the SX
2- April 8,2008- O ppm Methanol north side of the SX
3 - April 8,2008 ~ 0 ppm Methanol West side ofthe SX
4 -April 8,2008 - 0 ppm Methanol east side of the SX
5 - April 8, 2008 - 200 ppm Methanol over #4 U308 mixer (during operation)
CDC - NIOSH Pocket Guide to Chemical Hazards - Ammonia Page 1 of 3
Genters for Disease Gontrol and Prevention
• CDC 24/7:. Soving Lh/ss, Protecting Peopte. 'S<5ving Mon#y Trirough Prey^ntbrK
Search the Pocket Guide
Enter search terms separated by spaces.
Ammonia
Synonyms & Trade Names Anhydrous ammonia, Aqua ammonia, Aqueous ammoriia [Note: Often ui
aqueous solution.]
CAS No. 7664-41-7 RTECS
No. BO0875OOO
(/niosh-
rtecs/BOD t^QFS.html^
DOT m & Guide 1005 125 * rhttp://wwwapps.tc.gc.ca/s
sur/.^/erg-gmu/erg/guidepage.aspx?guide=i2f;) ranhyc
2672 lf;4 ^ rhttp://wwwapps.tc.gc.Ga/saf-sec-sur/.^/e
gmu/erg/guidepage.aspx?guide=if;4l ClO-35% solutioi
2073 12f^ iff fhttp://wwwapps.tc.gc.ca/saf^sec-sur/3/e
gmu/erg/guidepage.aspx?guide=i2P^^ r>35-50% soluti
1005 12SL 3^ fhttp://wwwapps.tc.gc.ca/saf-sec-sur/3/e
gmu/erg/guidepage.aspx?guide=i2f;y(>50% solution)
Formula NH3 Conversion 1 ppm —
0.70 mg/m3
IDLH 300 ppm
See: 7664417 r/niosh/idlh/76644i7.html)
Exposure Limits
NIOSH REL : TWA 25 ppm (i8 mg/m3) ST
35 ppm (27 mg/m3)
OSHA PEL t Cnengapdxg.htmlY: TWA 50
ppm(35mg/m3)
Measurement Methods^ . ' '
NIOSH 3800 % r/niosh/docs/2QO.^-if;4/pdfs/.':^8oQ.
6015 % f/niosh/docs/2003-if;4/pdfs/6oif;.pdf), 6oi(
r/niosh/docs/200.^-i54/pdfs/6oi6.pdf):
OSHAIDi88i^
rhttp://www.osha.gov/dts/sltc/methods/inorganic/idi?
See: NMAM r/niosh/docs/20o.'^-if^4/) or OSHA Metl
rhttp-//www.osha.gov/dts/sltc/methods/index.htmlV
Physical Description Colorless gas vsdth a puugent, suffocating odor. [Note: Shipped as a liquefied (
gas. Easily liquefied under pressure.]
MW: 17.0 BP: -
28^F
FRZ : -
io8°F
So!: 34% VP: 8.5 atm
. • • ...
IF: 10.18 eV
FLF: NA
(Gas)
UEL: 28% LEL: 15% RGasD: O.6O
[Note: Although NH3 does not meet the DOT definition of a Flammable Gas (for labeling purp
should be treated as one.]
xncompatiiiiiities ^ Reaed%ities Strong oxidizers, acids, halogeus, salts of silver & zinc [Note: Cof rosi
& galvanized surfaces.]
http://www.cdc.gov/niosh/npg/npgd0028.html 7/5/2011
CDC - NIOSH Pocket Guide tc^hemical Hazards - Ammonia Page 2 of 3
E.vp«j.sure Routes inhalation, ingestion (solution), skin and/or eye contact (solution/liquid)
svnmptoms Irritatiou eyes, nose, throat; dyspnea G^reathing difficulty), w^heezing, chest pain; pull
edema; pink frothy sputum; skin burns, vesiculation; liquid: frostbite
Target Organs Eyes, skin, respiratory system
.Fers<.).n.aLF.roteetioii/Saiiitation (See protection
codes fprotect.htmll 1
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
(solution)
Remove: When wet or contaminated
(solution)
Change: No recommendation
Provide: Eyewash (> lo %), Quick
drench (>io%)
.First Aid (See procedures ffirstaid.htmD)
Eye: Irrigate immediately (solution/liquid)
Skin: Water flush immediately (solution/liquid)
Breathing: Respiratory support
Swallow: Medical attention immediately (solutioi
Respirator Reeommetidations
NIOSH
Up to 250 ppm:
(APF = 10) Any chemical cartridge respirator with cartridge(s) providing protection against th<
of concern^
(APF 10) Any supplied-air respirator^
Up to 300 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode^
(APF = 25) Any powered, air-purifying respirator with cartridge(s) providing protection agains
compound of concern^
(APF = 50) Any chemical cartridge respirator with a full facepiece and cartridge(s) providing p
against the compound of concern
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or b
canister providing protection against the compound of concern
(APF = 50) Any self-contained breathing apparatus wdth a full facepiece
(APF = 50) Any supplied-air respirator vsdth a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operate
pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a fiill facepiece and is operated in a pressi
or other positive-pressure mode in combination with an auxiliary self-contained positive-pres5
breathing apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or b
canister providing protection against the compound of concern
Any appropriate escape-type, self-contained breathing apparatus
http://www. cdc. go v/niosh/npg/npgd0028.html 7/5/2011
Pocket Guide to Chemical Hazards - Ammonia Page 3 of 3
Important additional information about respirator selection rpgintrod.htmI#mustread)
See also: INTRODUCTION f/niosh/npg/pgintrod.html) See ICSC CARD: 0414
(/niosh/ipcsneng/neng04i4.htmD See MEDICAL TESTS: OO13 f/niosh/docs/20Qg;-iio/nmedooi.^.
Page last reviewed: April 4, 2011 '
Page last updated: November 18, 2010
Content source: National Institute for Occupational Safety and Health fNIOSHl Education and Information Division
Centers for Disease Control and Prevention 1600 Clifton Rd. Atlanta, GA
30333, USA
800-CDC-INFO (800-232-4636) TTY: [phone], 24 Hours/Eveiy Day - ^g^-,S:t»jS?dJEasy \
cdcinfo(a) cdc.gov
USA.gov i<
Govarnment wftiarfe Easy
http://www.cdc.gov/niosh/npg/npgd0028.html 7/5/2
CDC - NIOSH Pocket Guide to Chemical Hazards - Hydrogen fluoride Page 1 of 2
Centers for Disease Control and Prevention
CDC 24/7: Soving iivm, Protacting Pec^©. Sovlng Money Through Preventon.
Search the Pocket Guide
Enter search terms separated by spaces.
Hydrogen fluoride
.Synonyms & Trade Names Anhydrous hydrogen fluorlde; Aqueous hydrogen fluoride (i.e., Hydroflu
CAS No. 7664-39-3 .RTECS
No. MW787f:ooo
f/niosh-
rtecs/MW782QB8.htmD
DOT ID & Giiide IO52 125 ^ fhttp://wwwapps.tc.gc
sur/.'^/erg-gmu/erg/guidepage.aspx?guide=i2f;) fai
CAS No. 7664-39-3 .RTECS
No. MW787f:ooo
f/niosh-
rtecs/MW782QB8.htmD 1700 157 & rhttp://wwwapps.tc.gc.ca/saf-sec-sury
gmu/erg/guidepage.aspx?guide=i.'=;7) fsolution!
Formiiia HF Conversi«>n 1 ppm —
0.82 mg/m3
iDLLi 30 ppm
See: 7664.'^Q5^ f/niosh/idlh/7664.'^Q.'^.htmD
Exposure Limits
N108H REL : TWA 3 ppm (2.5 mg/ms) C 6
ppm (5 mg/ms) [15-minute]
osiiA PEL t fnengapdxg.htmD : TWA 3 ppm
Measurement Methods . . - ..
NIOSH :^800 * f/niosh/docs/20o:^-if^4/pdfs/:^
7Q02 f/niosh/docs/20or^-if;4/pdfs/7Q02.pdf),
Exposure Limits
N108H REL : TWA 3 ppm (2.5 mg/ms) C 6
ppm (5 mg/ms) [15-minute]
osiiA PEL t fnengapdxg.htmD : TWA 3 ppm r/niosh/docs/2003-i.c;4/pdfs/7Q03.pdf). 7QO6
f/niosh/docs/200!^-if;4/pdfs/7Qo6.pdf):
OSHAIDiiOif
fhttp://www.osha.gov/dts/sltc/mefhods/inorganic^
See: NMAM f/niosh/docs/20o.'^-if;4/) or OSHA I
fhttp://www.osha.gov/dts/sltc/methods/index.htrr
Physical Description Colorless gas or fumiug liquid (belovs^ 67^F)with a strong, irritating odor. [Nc
cylinders.]
MW: 20.0 BP: 67°
F
FRZ: -
ii8°F
Sol: Miscible VP: 783 mmHg IP: 15.98 e
Sp.Gr: 1.00
(Liquid at
67^F)
ELP: NA ilEL: NA LEL: NA RGasD: 0.69
Nonflammable Gas
inconipatihiiities Reactivities Metals, vs^ater or Steam [Note: Corrosive to metals. Will attack glass a
Exposure Routes inhalation, skin absorption (liquid), ingestion (solution), skin and/or eye contac
s>anptonis irritation eyes, skin, nose, throat; pulmonary edema; eye, skin burns; rhinitis; bronch
changes
http://www.cdc.gov/niosh/npg/npgd0334.html 7/5/2011
CDC - NIOSH Pocket Guide t^Ihemical Hazards - Hydrogen fluoride. t^l Page 2 of2
Target Organs Eyes, skin, respiratory system, bones
Personal Protec tion/Sanitation (See protectiou
codes fprotect.htmP )
Skin: Prevent skin contact (liquid)
Eyes: Prevent eye contact Qiquid)
Wash skin: When contaminated (liquid)
Remove: When w^et or contaminated
(liquid)
Change: No recommendation
Provide: Eyewash (liquid). Quick drench
(liquid)
First Aid (See procedures rfirstaid.htmlT >
Eye: Irrigate immediately (solution/liquid)
Skin: Water flush immediately (solution/liqui
Breathing: Respiratory support
Swallow: Medical attention immediately (soli
Respirator Rec<:.>ini;neiiid.ati.ons
NIOSH/OSHA
Up to 30 ppm:
(APF = 10) Any chemical cartridge respirator wdth cartridge(s) providing protection against th<
concern^
(APF = 25) Any powered, air-purifying respirator vsdth cartridge(s) providing protection agains
of concern^
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) vsdth a chin-style, front- or b
canister providing protection against the compound of concern
(APF = 10) Any supplied-air respirator^
(APF = 50) Any self-contained breathing apparatus with a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operate
demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressi
other positive-pressure mode in combination vsdth an auxiliary self-contained positive-pressur
apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or b
canister providing protection against the compound of concern
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection rpgintrod.html#mustread)
See also: INTRODUCTION f/niosh/npg/pdntrod.htmn See ICSC CARD: 028-:^ f/niosh/ipcsneng/
See MEDICAL TESTS: 0118 r/niosh/docs/200^-iio/nmedoii8.htmn
Page last reviewed: April 4, 2011
Page last updated: November 18, 2010
Content source: National Institute for Occupational Safety and Health TNIOSFD Education and Information Division
Centers for Disease Control and Prevention 1600 Clifton Rd. Atlanta, GA ^.0^^
30333, USA '"l^TQA r%f\\i
800-CDC-INFO (800-232-4636) TTY: [phone], 24 Hours/Every Day - ^O^^tHEY^^^ x
cdcinfo(5)cdc.gov
http: //www. cdc. go v/nio sh/npg/npgd03 34.html 7/5/2011
CDC - NIOSH Pocket Guide to Chemical Hazards - Methyl alcohol Page 1 of2
Centers for Disease Cohtrol and Prevention
"CDC 24/7: Sovlng Iki&s. Pfof«ct!ng P&Dpl©. Saving Money Through Pi&mrmri.
Search the Pocket Guide
Enter search terms separated by spaces.
Methyl alcohol
Synonyms & Trade Names Carbinol, Columbian spiritsy Methanol, Pyroligneous spirit, Wood alcohc
Wood spirit
CAS No. 67-56-1 RTECS No. PC14OOOOO
f/niosh-
DOT ID & Guide 1230 131 & fhttp://wwwapps.tc.g<
sur/.'^/erg-gmu/erg/guidepage.aspx?guide=l.'^i>
CAS No. 67-56-1
rtecs/PCif;c;CCo.htmn
Formula CH3OH
• - \
Conversion 1 ppm = I.3I
mg/ms
IDLH 6000 ppm
See: 67561 f/niosh/idlh/67.'^6i.htmD
Exposure Limits
NIOSH REL : TWA 200 ppm (260 mg/ms) ST
250 ppm (325 mg/ms) [skin]
OSHA PEL t fnengapdxg.htmD : TWA 200 ppm
(260 mg/ms)
Measurement Methods
NIOSH 2000 f/niosh/docs/20o:^-if;4/pdfs/
r^8oo ^ (/niosh/docs/20o:^-if;4/pdfis/r^8oo.pdf
Exposure Limits
NIOSH REL : TWA 200 ppm (260 mg/ms) ST
250 ppm (325 mg/ms) [skin]
OSHA PEL t fnengapdxg.htmD : TWA 200 ppm
(260 mg/ms)
OSHAgii^
fhttp://www.osha.gov/dts/sltc/methods/organic/
See: NMAM f/niosh/docs/200.'^-if;4/l or OSHA
rhttp://www.osha.gov/dts/sltc/methods/index.ht
Physical Description Colorless liquid with a characteristic pungent odor.
MW: 32.1 BP: 147""
F
FRZ: -
144'F
Sol: Miscible VP: 96 mmHg IP: 10.84 eV
Sp.Gr: 0.79 Fl.P: 52°
F
UEL: 36% LEL: 6.0%
Class IB Flammable Liquid: Fl.P. below 73''F and BP at or above lOO'^F.
Ineompatibiliiies ^. Reaetivities Strong OXidizerS
Exposiire Routes inhalation, skin absorption, ingestion, skin and/or eye contact
s>TOptoms irritation eyes, skin, upper respiratory system; headache, drowsiness, dizziness, naus<
visual disturbance, optic nerve damage (blindness); dermatitis
Target Organs Eyes, sMu, respiratory system, central nervous system, gastrointestinal tract
Personal Protection/Sanitation (See protection
codes fprotect.htmll l
First Aid; (See procedures rfirstaid.html) )
Eye: Irrigate immediately
http://www.cdc.gov/niosh/npg/npgd0397.html 7/5/2011
CDC - NIOSH Pocket Guide t^hemical Hazards - Methyl alcohol t^l Page 2 of2
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet (flammable)
Change: No recommendation
Skin: Water flush promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Reeoomiendations
NIOSH/OSHA
Up to 2000 ppm:
(APF = lo) Any supplied-air respirator
Up to 5000 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 6000 ppm:
(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a co
mode
(APF = 50) Any self-contained breathing apparatus wdth a full facepiece
(APF = 50) Any supplied-air respirator with a fiill facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operate
demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressi
other positive-pressure mode in combination vsdth an auxiliary self-contained positive-pressur
apparatus
Escape:
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection rpgintrod.html#mustready
See also: INTRODUCTION f/niosh/npg/pgintrod.htmP See ICSC CARD: oog? f/niosh/ipcsneng/
See MEDICAL TESTS: Ol.-^^? r/niosh/docs/200g;-nQ/nmedoi-:i7.htmn
Page last reviewed: April 4, 2011
Page last updated: November 18, 2010
Content source: National Institute for Occupational Safety and Health TNIOSHl Education and Information Division
Centers for Disease Control and Prevention 1600 Clifton Rd. Atlanta, GA .jf /
30333, USA "tlQA nm/ i
800-CDC-INFO (800-232-4636) TTY: [phone], 24 Hours/Every Day - '-^iS^niyffi^ X
cdcinfQ(5)cdc.gov
http://www.cdc.gov/niosh/npg/npgd0397.html 7/5/2011
CDC - NIOSH Pocket Guide to Chemical Hazards - Chlorine Page 1 of 3
Centers for Disease Control and Prevention
CDC 24/7: Saving iivm. Pfoteeting Peopte. S<jvlng Money Through Ptsvention.
Search the Pocket Guide
Enter search terms separated by spaces.
Chlorine
Synonyms & Trade Names MolcCUlar chlorlnC
CAS No. 7782-50-5 RTECS
No. FO2IOOOOO
f/niosh-
rtecs/F0200B20.htmD
DOT ID ^fc Guide 1017 124 fhttp://wwwapps.tc.gc.ca/j
sur/.'^/erg-gmu/erg/guidepage.aspx?guide=i24V
CAS No. 7782-50-5 RTECS
No. FO2IOOOOO
f/niosh-
rtecs/F0200B20.htmD
Formula CI2 Conversion 1 ppm —
2.90 mg/ms
IDLH 10 ppm
See: 7782505 f/niosh/idlh/7782f;of;.htmlV
Exposure Limits
NIOSH REL : C 0.5 ppm (1.45 mg/ms) [15-
minute]
OSHA PEL t Tnengapdxg.htmD : C 1 ppm (3
mg/ms)
Measiireinent Methods
NIOSH 6011 ^ r/niosh/docs/200.'^-if;4/pdfs/6oii.
OSHAIDioiff
fhttp://www.osha.gov/dts/sltc/methods/inorganic/id]
Exposure Limits
NIOSH REL : C 0.5 ppm (1.45 mg/ms) [15-
minute]
OSHA PEL t Tnengapdxg.htmD : C 1 ppm (3
mg/ms) ID126SGX & rhttp://www.osha.gov/dts/sltc/method
Exposure Limits
NIOSH REL : C 0.5 ppm (1.45 mg/ms) [15-
minute]
OSHA PEL t Tnengapdxg.htmD : C 1 ppm (3
mg/ms) idi26sgx-pv-oi-oii2-m/t-idi26sgx-pv-oi-oii2-m.htm'
Exposure Limits
NIOSH REL : C 0.5 ppm (1.45 mg/ms) [15-
minute]
OSHA PEL t Tnengapdxg.htmD : C 1 ppm (3
mg/ms)
See: NMAM f/niosh/docs/200.'^-if;4/) or OSHA Mei
fhttp://www.osha.gov/dts/sltc/methods/index.htmD
Physical Description Greeuish-yellow gas with a pungent, irritating odor. [Note: Shipped as a lique
compressed gas.]
MW: 70.9 BP: -
29°F
FRZ: -
150°F
Sol: 0.7% VP: 6.8 atm IP: 11.48 eV
Fl.P: NA UEL: NA LEL: NA ROasD: 2.47
Nonflammable Gas, but a strong oxidizer.
Incompatibilities & Reactivitieji Reacts explosively or forms explosive compounds wdth many commo
such as acetylene, ether, turpentine, ammonia, fuel gas, hydrogen & finely divided metals.
Exposure Routes iuhalatiou, skiu and/or eye contact
Symptoms Buming of eyes, nose, mouth; lacrimatioii (discharge of tears), rhinorrhea (discharge
mucus); cough, choking, substernal (occurring beneath the sternum) pain; nausea, vomiting; I
dizziness; syncope; pulmonary edema; pneumonitis; hypoxemia (reduced O2 in the blood); dei
liquid: frostbite
http://www.cdc.gov/niosh/npg/npgd0115.html 7/5/2011
CDC - NIOSH Pocket Guide t<^hemical Hazards - Chlorine Page 2 of3
Target Orgtms Eyes, skin, respiratory system
Personal Protection/Sanitation (See protection
codes Tprotect.htmP )
Skin: Frostbite
Eyes: Frostbite
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation
Provide: Frostbite wash
First Aid (See procedures ffirstaid.htmP )
Eye: Frostbite
Skin: Frostbite
Breathing: Respiratory support
Respirator Reeommendati<;>ns
NIOSH
Up to 5 ppm:
(APF = lo) Any chemical cartridge respirator with cartridge(s) providing protection against th<
concern^
(APF = lo) Any supplied-air respirator^
Up to lo ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode^
(APF = 25) Any powered, air-purifying respirator with cartridge(s) providing protection agains
compound of concern^
(APF = 50) Any chemical cartridge respirator with a full facepiece and cartridge(s) providing p
against the compound of concern
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or b
canister providing protection against the compound of concern
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operate
pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressi
other positive-pressure mode in combination vsdth an auxiliary self-contained positive-pressur
apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) vsdth a chin-style, front- or b
canister providing protection against the compound of concern
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection fpgintrod.html#mustread)
See also: INTRODUCTION f/niosh/npg/pgintrod.html) See ICSC CARD: 0126T/niosh/ipcsneng/
See MEDICAL TESTS: 0044 r/niosh/docs/200g;-iio/nmedoo44.htmn
Page last reviewed: April 4, 2011
Page last updated: November 18, 2010
Content source: National Institute for Occupational Safetv and Health TNIOSHl Education and Information Division
http://www.cdc.gov/niosh/npg/npgd0115.html 7/5/2011
CDC - NIOSH Pocket Guide to Chemical Hazards- Chlorine Page 3 of 3
Centers for Diseak Control and Prevention 1600 Clifton Rd. Atlanta, GA ^—-jf
30333, USA T^TQA riA\/ =
8od-CDC-INFO (800-232-4636)TIY: [phone], 24 Hours/Every Day - '-^^-S^sQW x^Z
cdcmio(a)cdc.gov
http://www.cdc.gov/niosh/npg/npgd0115.html 7/5/2011
CDC - NIOSH Pocket Guide to Chemical Hazards - Kerosene Page 1 of3
Centejs for Disease Control and Prevention
CDC 24/7; Sovlng Ltv«. Ptotecting People. Sovlng Money Thwjugh Ptevenfton.
Search the Pocket Guide
Enter search terms separated by spaces.
Kerosene
Synonyms & Trade Names Fuel Oil No. i. Range oil [Note: A refined petroleum solvent
(predorninantly C9-C16), which typically is 25% normal paraffins, 11% branched paraffins, 30%
monocycloparaffins, 12% dicycloparaffins, 1% tricycloparaffins, 16% mononuclear aromatics &
5% dinuclear aromatics.]
CAS No. 8008-20-6 RTECS No. OA55OOOOO
f/niosh-
DOT n> & Guide 1223 128
f http: / / wwwapps. tc. gc. ca/saf-sec-sur/r^/erg-
CAS No. 8008-20-6
rtecs/OA'^':iEC6o.htmD gmu/erg/guidepage.aspx?guide=i28')
C<>nvei\si<>n • roLH N.D.
See: IDLH INDEX f/niosh/idlh/intridk.html)
Exposure Limits
NIOSH REL : TWA 100 mg/ms
OSHA PEL : none
Measiirenient .Method.s
NIOSH ifiTO r/niosh/docs/200^-
i54/pdfs/if;f;o.pdf)
See: NMAM f/niosh/docs/200'^-ifi4/) or OSHA
Methods
fhttp://www.osha.gov/dts/sltc/methods/index.ht]
Physical Description Colorless to yellovsdsh, oily liquid wdth a strong, characteristic odor.
MW: 170
(approx)
BP: 347-
6i7°F
FRZ: -
50°F
Sol: Insoluble VP(ioo°F): 5 mmHg IP:?
Sp.Gr: 0.81 < Fl.P: 100
-l62°F
UEL: 5% LEL: 0.7%
Class II Combustible Liquid: Fl.P. at or above ioo°F and below 140°F.
Inconipatibilities Ik Reactivitie^s StrOUg OXidizerS
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms irritation eyes, skin, nose, throat; burning sensation in chest; headache, nausea,
lassitude (weakness, exhaustion), restlessness, incoordination, confusion, drowsiness; vomitin
diarrhea; dermatitis; chemical pneumonitis (aspiration liquid)
Target Organs Eyes, sklu, respiratory system, central nervous system
http://www.cdc.gov/niosh/npg/npgd0366.html 7/5/2011
CDC - NIOSH Pocket Guide tc^hemical Hazards - Kerosene t^h Page 2 of S
Personal Protection/Sanitation (See pTOteCtion
codes (protect.htmD 1
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
Provide: Quick drench
First Aid (See procedures Tfirstaid.htmD )
Eye: Irrigate immediately
Skin: Soap flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Reeom.mendati.ons
NIOSH
Up to iooo mg/m3:
(APF = lo) Any chemical cartridge respirator v^th organic vapor cartridge(s)
(APF = lo) Any supplied-air respirator
Up to 2500 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
(APF = 25) Any powered, air-purifying respirator wdth organic vapor cartridge(s)
Up to 5000 mg/ms:
(APF = 50) Any chemical cartridge respirator wdth a full facepiece and organic vapor cartridgei
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) wdth a chin-style, front- or
back-mounted organic vapor canister
(APF = 50) Any powered, air-purifying respirator wdth a tight-fitting facepiece and organic vap
cartridge(s)
(APF = 50) Any self-contained breathing apparatus wdth a full facepiece
(APF = 50) Any supplied-air respirator wdth a full facepiece
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operate
in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressi
-demand or other positive-pressure mode in combination wdth an auxiliary self-contained
positive-pressure breathing apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) wdth a chin-style, front- or
back-mounted organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection fpgintrod.html#mustread)
See also: INTRODUCTION f/niosh/npg/pgintrod.htmn See ICSC CARD: 0669.
f/niosh/ipcsneng/nengo66?.html>
Page last reviewed: April 4, 2011
Page last updated: November 18, 2010
Content source: National Institute for Occupational Safety and Health TNIOSHl Education and Information Division
http://www.cdc.gov/niosh/npg/npgd0366.html 7/5/2011
^:DC - NIOSH Pocket Guide to Chemical Hazards - Kerosene Page 3 of 3
Centers for Disease Control and Prevention 1600 Clifton Rd. Atlanta, GA
30333, USA
800-CDC-INFO (800-232-4636) TTY: [phone], 24 Hours/Every Day •
cdcinfo(5)cdc.gov
tlSA.gov (.£.
Government VK* Made Easy
http://www.cdc.gov/niosh/npg/npgd0366.html 7/5/2011
Date Effluent Concentration Limit =9E-14 uCi/ml BHV-1U Effluent Concentration Limit =2E-14 uCi/ml BHV-1T Effluent Concentration Limit =9E-13 uCi/ml BHV-1R Effluent Concentration Limit =6E-13 uCi/ml BHV-1PB
ALARA Goal =2.25E-14 uCi/ml ALARA Goal =5E-13 uCi/ml ALARA Goal =2.25E-13 uCi/ml ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =5E-12 uCi/ml Pre 1994 MPC Limit =8E-14 uCi/ml Pre 1994 MPC Limit =2E-12 uCi/ml Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA GOAL =1.25E-12 uCi/ml Pre 1994 ALARA GOAL =5E-13 uCi/ml Pre 1994 ALARA GOAL =1E-12 uCi/ml
Conc EFC EFC A Conc EFC EFC A Conc EFC EFC A Conc EFC EFC A
9/28/1981 2.35E-15 5.00E-12 1.25E-12 7.82E-16 8.00E-14 2.00E-14 1.06E-15 2.00E-12 5.00E-13 2.57E-14 4.00E-12 1.00E-12
12/14/1981 1.56E-15 5.00E-12 1.25E-12 1.49E-15 8.00E-14 2.00E-14 1.93E-15 2.00E-12 5.00E-13 2.64E-14 4.00E-12 1.00E-12
3/29/1982 2.16E-15 5.00E-12 1.25E-12 2.93E-15 8.00E-14 2.00E-14 1.16E-15 2.00E-12 5.00E-13 2.09E-14 4.00E-12 1.00E-12
6/30/1982 4.69E-15 5.00E-12 1.25E-12 3.46E-15 8.00E-14 2.00E-14 2.38E-15 2.00E-12 5.00E-13 2.14E-14 4.00E-12 1.00E-12
9/27/1982 4.45E-15 5.00E-12 1.25E-12 3.29E-15 8.00E-14 2.00E-14 3.23E-15 2.00E-12 5.00E-13 1.99E-14 4.00E-12 1.00E-12
1/3/1983 4.39E-15 5.00E-12 1.25E-12 5.91E-16 8.00E-14 2.00E-14 9.14E-16 2.00E-12 5.00E-13 4.87E-14 4.00E-12 1.00E-12
4/4/1983 7.51E-16 5.00E-12 1.25E-12 2.13E-16 8.00E-14 2.00E-14 3.20E-16 2.00E-12 5.00E-13 1.88E-14 4.00E-12 1.00E-12
6/30/1983 2.68E-16 5.00E-12 1.25E-12 6.92E-16 8.00E-14 2.00E-14 7.92E-16 2.00E-12 5.00E-13 2.00E-14 4.00E-12 1.00E-12
10/3/1983 5.00E-12 1.25E-12 8.00E-14 2.00E-14 0.00E+00 2.00E-12 5.00E-13 4.00E-12 1.00E-12
1/3/1984 2.87E-15 5.00E-12 1.25E-12 1.14E-16 8.00E-14 2.00E-14 1.79E-16 2.00E-12 5.00E-13 1.06E-14 4.00E-12 1.00E-12
4/2/1984 1.59E-15 5.00E-12 1.25E-12 3.40E-16 8.00E-14 2.00E-14 3.71E-16 2.00E-12 5.00E-13 3.34E-14 4.00E-12 1.00E-12
7/2/1984 3.10E-15 5.00E-12 1.25E-12 1.00E-15 8.00E-14 2.00E-14 2.09E-15 2.00E-12 5.00E-13 1.88E-14 4.00E-12 1.00E-12
10/1/1984 6.42E-16 5.00E-12 1.25E-12 1.39E-16 8.00E-14 2.00E-14 1.94E-16 2.00E-12 5.00E-13 1.85E-14 4.00E-12 1.00E-12
1/2/1985 5.06E-16 5.00E-12 1.25E-12 4.56E-16 8.00E-14 2.00E-14 3.49E-16 2.00E-12 5.00E-13 3.03E-14 4.00E-12 1.00E-12
4/1/1985 0.00E+00 5.00E-12 1.25E-12 1.23E-15 8.00E-14 2.00E-14 4.88E-16 2.00E-12 5.00E-13 8.06E-15 4.00E-12 1.00E-12
7/1/1985 7.17E-16 5.00E-12 1.25E-12 8.00E-14 2.00E-14 1.05E-15 2.00E-12 5.00E-13 2.15E-14 4.00E-12 1.00E-12
9/30/1985 6.13E-16 5.00E-12 1.25E-12 1.18E-16 8.00E-14 2.00E-14 3.71E-16 2.00E-12 5.00E-13 3.64E-15 4.00E-12 1.00E-12
1/2/1986 3.42E-15 5.00E-12 1.25E-12 4.74E-16 8.00E-14 2.00E-14 2.00E-12 5.00E-13 4.00E-12 1.00E-12
4/1/1986 3.98E-15 5.00E-12 1.25E-12 9.74E-16 8.00E-14 2.00E-14 1.50E-15 2.00E-12 5.00E-13 1.41E-14 4.00E-12 1.00E-12
6/30/1986 5.51E-17 5.00E-12 1.25E-12 3.52E-16 8.00E-14 2.00E-14 1.37E-15 2.00E-12 5.00E-13 1.23E-14 4.00E-12 1.00E-12
10/27/1986 1.99E-15 5.00E-12 1.25E-12 3.06E-16 8.00E-14 2.00E-14 1.25E-15 2.00E-12 5.00E-13 1.08E-14 4.00E-12 1.00E-12
12/15/1986 1.67E-15 5.00E-12 1.25E-12 1.16E-16 8.00E-14 2.00E-14 5.98E-16 2.00E-12 5.00E-13 1.37E-14 4.00E-12 1.00E-12
3/16/1987 2.33E-15 5.00E-12 1.25E-12 4.30E-16 8.00E-14 2.00E-14 1.92E-16 2.00E-12 5.00E-13 5.59E-14 4.00E-12 1.00E-12
5/11/1987 2.36E-15 5.00E-12 1.25E-12 7.69E-16 8.00E-14 2.00E-14 8.76E-16 2.00E-12 5.00E-13 1.45E-14 4.00E-12 1.00E-12
9/9/1987 2.27E-15 5.00E-12 1.25E-12 2.44E-15 8.00E-14 2.00E-14 8.51E-16 2.00E-12 5.00E-13 3.14E-14 4.00E-12 1.00E-12
11/2/1987 2.75E-15 5.00E-12 1.25E-12 2.46E-15 8.00E-14 2.00E-14 1.34E-15 2.00E-12 5.00E-13 2.79E-14 4.00E-12 1.00E-12
2/16/1988 1.07E-15 5.00E-12 1.25E-12 1.47E-16 8.00E-14 2.00E-14 4.44E-16 2.00E-12 5.00E-13 4.01E-14 4.00E-12 1.00E-12
5/18/1988 1.98E-15 5.00E-12 1.25E-12 1.25E-15 8.00E-14 2.00E-14 6.40E-16 2.00E-12 5.00E-13 1.07E-14 4.00E-12 1.00E-12
8/15/1988 2.06E-15 5.00E-12 1.25E-12 3.41E-15 8.00E-14 2.00E-14 5.08E-16 2.00E-12 5.00E-13 1.62E-14 4.00E-12 1.00E-12
11/14/1988 3.94E-15 5.00E-12 1.25E-12 2.12E-15 8.00E-14 2.00E-14 1.01E-15 2.00E-12 5.00E-13 2.47E-14 4.00E-12 1.00E-12
2/13/1989 1.99E-15 5.00E-12 1.25E-12 5.73E-16 8.00E-14 2.00E-14 5.99E-16 2.00E-12 5.00E-13 3.23E-14 4.00E-12 1.00E-12
5/15/1989 1.70E-15 5.00E-12 1.25E-12 6.32E-16 8.00E-14 2.00E-14 5.86E-16 2.00E-12 5.00E-13 6.16E-15 4.00E-12 1.00E-12
8/14/1989 2.31E-15 5.00E-12 1.25E-12 2.31E-16 8.00E-14 2.00E-14 1.77E-16 2.00E-12 5.00E-13 7.65E-15 4.00E-12 1.00E-12
11/13/1989 4.72E-15 5.00E-12 1.25E-12 1.71E-15 8.00E-14 2.00E-14 1.52E-15 2.00E-12 5.00E-13 1.89E-14 4.00E-12 1.00E-12
2/12/1990 3.44E-16 5.00E-12 1.25E-12 8.39E-16 8.00E-14 2.00E-14 8.31E-16 2.00E-12 5.00E-13 2.57E-14 4.00E-12 1.00E-12
5/14/1990 3.03E-15 5.00E-12 1.25E-12 1.47E-15 8.00E-14 2.00E-14 1.04E-15 2.00E-12 5.00E-13 1.79E-14 4.00E-12 1.00E-12
8/13/1990 1.64E-15 5.00E-12 1.25E-12 1.49E-15 8.00E-14 2.00E-14 3.34E-16 2.00E-12 5.00E-13 8.27E-15 4.00E-12 1.00E-12
11/12/1990 1.48E-15 5.00E-12 1.25E-12 7.50E-16 8.00E-14 2.00E-14 5.80E-16 2.00E-12 5.00E-13 2.16E-14 4.00E-12 1.00E-12
2/11/1991 1.90E-16 5.00E-12 1.25E-12 3.48E-17 8.00E-14 2.00E-14 7.91E-17 2.00E-12 5.00E-13 3.79E-14 4.00E-12 1.00E-12
5/13/1991 3.42E-16 5.00E-12 1.25E-12 1.34E-15 8.00E-14 2.00E-14 7.39E-16 2.00E-12 5.00E-13 1.46E-14 4.00E-12 1.00E-12
8/12/1991 2.77E-16 5.00E-12 1.25E-12 4.17E-17 8.00E-14 2.00E-14 1.45E-16 2.00E-12 5.00E-13 1.80E-14 4.00E-12 1.00E-12
11/11/1991 6.65E-17 5.00E-12 1.25E-12 9.13E-17 8.00E-14 2.00E-14 2.77E-17 2.00E-12 5.00E-13 1.06E-14 4.00E-12 1.00E-12
2/10/1992 1.94E-16 5.00E-12 1.25E-12 4.28E-17 8.00E-14 2.00E-14 4.08E-17 2.00E-12 5.00E-13 3.51E-14 4.00E-12 1.00E-12
5/11/1992 2.54E-16 5.00E-12 1.25E-12 6.49E-16 8.00E-14 2.00E-14 6.86E-17 2.00E-12 5.00E-13 1.38E-14 4.00E-12 1.00E-12
8/10/1992 1.73E-16 5.00E-12 1.25E-12 1.55E-16 8.00E-14 2.00E-14 1.20E-16 2.00E-12 5.00E-13 1.53E-14 4.00E-12 1.00E-12
11/9/1992 1.56E-16 5.00E-12 1.25E-12 3.19E-17 8.00E-14 2.00E-14 4.90E-18 2.00E-12 5.00E-13 1.86E-14 4.00E-12 1.00E-12
2/9/1993 2.10E-16 5.00E-12 1.25E-12 8.00E-14 2.00E-14 3.89E-17 2.00E-12 5.00E-13 2.52E-14 4.00E-12 1.00E-12
5/10/1993 1.00E-16 5.00E-12 1.25E-12 4.11E-17 8.00E-14 2.00E-14 6.43E-17 2.00E-12 5.00E-13 1.26E-14 4.00E-12 1.00E-12
8/10/1993 2.30E-16 5.00E-12 1.25E-12 6.00E-17 8.00E-14 2.00E-14 6.43E-17 2.00E-12 5.00E-13 1.60E-14 4.00E-12 1.00E-12
11/8/1993 5.00E-12 1.25E-12 8.00E-14 2.00E-14 0.00E+00 2.00E-12 5.00E-13 1.57E-14 4.00E-12 1.00E-12
2/7/1994 1.82E-16 5.00E-12 1.25E-12 5.00E-18 8.00E-14 2.00E-14 4.30E-17 2.00E-12 5.00E-13 2.59E-14 4.00E-12 1.00E-12
5/9/1994 3.60E-16 5.00E-12 1.25E-12 2.70E-16 8.00E-14 2.00E-14 2.87E-16 2.00E-12 5.00E-13 1.60E-14 4.00E-12 1.00E-12
8/9/1994 4.04E-16 5.00E-12 1.25E-12 2.70E-16 8.00E-14 2.00E-14 2.94E-16 2.00E-12 5.00E-13 2.00E-15 4.00E-12 1.00E-12
11/7/1994 9.18E-17 5.00E-12 1.25E-12 3.60E-16 8.00E-14 2.00E-14 2.91E-16 2.00E-12 5.00E-13 2.00E-15 4.00E-12 1.00E-12
Date Effluent Concentration Limit =9E-14 uCi/ml BHV-1U Effluent Concentration Limit =2E-14 uCi/ml BHV-1T Effluent Concentration Limit =9E-13 uCi/ml BHV-1R Effluent Concentration Limit =6E-13 uCi/ml BHV-1PB
ALARA Goal =2.25E-14 uCi/ml ALARA Goal =5E-13 uCi/ml ALARA Goal =2.25E-13 uCi/ml ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =5E-12 uCi/ml Pre 1994 MPC Limit =8E-14 uCi/ml Pre 1994 MPC Limit =2E-12 uCi/ml Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA GOAL =1.25E-12 uCi/ml Pre 1994 ALARA GOAL =5E-13 uCi/ml Pre 1994 ALARA GOAL =1E-12 uCi/ml
Conc EFC EFC A Conc EFC EFC A Conc EFC EFC A Conc EFC EFC A
2/7/1995 1.77E-16 9.00E-14 2.25E-14 9.70E-17 2.00E-14 5.00E-15 9.70E-17 9.00E-13 2.25E-13 8.60E-15 6.00E-13 1.50E-13
5/9/1995 9.40E-17 9.00E-14 2.25E-14 5.36E-16 2.00E-14 5.00E-15 1.60E-15 9.00E-13 2.25E-13 3.84E-15 6.00E-13 1.50E-13
8/9/1995 2.70E-16 9.00E-14 2.25E-14 1.60E-16 2.00E-14 5.00E-15 2.76E-16 9.00E-13 2.25E-13 3.76E-15 6.00E-13 1.50E-13
11/11/1995 4.80E-15 9.00E-14 2.25E-14 6.41E-16 2.00E-14 5.00E-15 8.93E-16 9.00E-13 2.25E-13 5.20E-15 6.00E-13 1.50E-13
2/5/1996 5.34E-15 9.00E-14 2.25E-14 2.30E-15 2.00E-14 5.00E-15 1.30E-15 9.00E-13 2.25E-13 4.20E-15 6.00E-13 1.50E-13
5/6/1996 5.11E-16 9.00E-14 2.25E-14 3.06E-16 2.00E-14 5.00E-15 1.40E-16 9.00E-13 2.25E-13 7.03E-15 6.00E-13 1.50E-13
8/5/1996 5.99E-16 9.00E-14 2.25E-14 1.55E-15 2.00E-14 5.00E-15 2.03E-16 9.00E-13 2.25E-13 5.94E-15 6.00E-13 1.50E-13
11/6/1996 3.38E-16 9.00E-14 2.25E-14 5.45E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 1.22E-14 6.00E-13 1.50E-13
2/6/1997 1.00E-16 9.00E-14 2.25E-14 1.25E-16 2.00E-14 5.00E-15 1.28E-16 9.00E-13 2.25E-13 5.68E-15 6.00E-13 1.50E-13
5/5/1997 1.09E-16 9.00E-14 2.25E-14 1.00E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 4.39E-15 6.00E-13 1.50E-13
8/11/1997 2.88E-16 9.00E-14 2.25E-14 3.83E-16 2.00E-14 5.00E-15 1.82E-16 9.00E-13 2.25E-13 5.29E-15 6.00E-13 1.50E-13
1/5/1998 3.24E-16 9.00E-14 2.25E-14 3.47E-16 2.00E-14 5.00E-15 1.19E-16 9.00E-13 2.25E-13 4.73E-15 6.00E-13 1.50E-13
4/28/1998 4.75E-16 9.00E-14 2.25E-14 6.73E-16 2.00E-14 5.00E-15 5.69E-16 9.00E-13 2.25E-13 5.94E-15 6.00E-13 1.50E-13
7/31/1998 8.84E-16 9.00E-14 2.25E-14 1.93E-15 2.00E-14 5.00E-15 1.43E-15 9.00E-13 2.25E-13 5.22E-15 6.00E-13 1.50E-13
9/28/1998 2.81E-16 9.00E-14 2.25E-14 2.89E-16 2.00E-14 5.00E-15 1.80E-16 9.00E-13 2.25E-13 4.64E-15 6.00E-13 1.50E-13
12/28/1998 8.08E-16 9.00E-14 2.25E-14 4.93E-16 2.00E-14 5.00E-15 5.01E-16 9.00E-13 2.25E-13 1.06E-14 6.00E-13 1.50E-13
3/29/1999 2.06E-16 9.00E-14 2.25E-14 2.06E-16 2.00E-14 5.00E-15 1.42E-16 9.00E-13 2.25E-13 6.69E-15 6.00E-13 1.50E-13
7/3/1999 5.31E-16 9.00E-14 2.25E-14 2.47E-16 2.00E-14 5.00E-15 2.23E-16 9.00E-13 2.25E-13 6.44E-15 6.00E-13 1.50E-13
9/27/1999 8.98E-16 9.00E-14 2.25E-14 3.90E-16 2.00E-14 5.00E-15 2.96E-16 9.00E-13 2.25E-13 7.29E-15 6.00E-13 1.50E-13
12/28/1999 1.48E-15 9.00E-14 2.25E-14 6.00E-16 2.00E-14 5.00E-15 5.57E-16 9.00E-13 2.25E-13 6.19E-15 6.00E-13 1.50E-13
3/27/2000 1.00E-16 9.00E-14 2.25E-14 1.06E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 6.23E-15 6.00E-13 1.50E-13
6/26/2000 3.47E-16 9.00E-14 2.25E-14 3.46E-16 2.00E-14 5.00E-15 3.62E-16 9.00E-13 2.25E-13 4.50E-15 6.00E-13 1.50E-13
9/26/2000 2.51E-16 9.00E-14 2.25E-14 1.78E-16 2.00E-14 5.00E-15 3.25E-16 9.00E-13 2.25E-13 8.55E-15 6.00E-13 1.50E-13
12/26/2000 1.00E-16 9.00E-14 2.25E-14 1.42E-16 2.00E-14 5.00E-15 1.31E-16 9.00E-13 2.25E-13 7.77E-15 6.00E-13 1.50E-13
3/26/2001 3.10E-16 9.00E-14 2.25E-14 1.00E-15 2.00E-14 5.00E-15 1.00E-15 9.00E-13 2.25E-13 7.19E-15 6.00E-13 1.50E-13
7/29/2001 1.52E-16 9.00E-14 2.25E-14 1.44E-16 2.00E-14 5.00E-15 1.77E-16 9.00E-13 2.25E-13 7.21E-15 6.00E-13 1.50E-13
9/24/2001 1.03E-16 9.00E-14 2.25E-14 1.00E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 8.09E-15 6.00E-13 1.50E-13
12/31/2001 1.00E-16 9.00E-14 2.25E-14 1.00E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 1.39E-15 6.00E-13 1.50E-13
4/1/2002 2.05E-16 9.00E-14 2.25E-14 2.44E-16 2.00E-14 5.00E-15 2.29E-16 9.00E-13 2.25E-13 8.15E-15 6.00E-13 1.50E-13
7/1/2002 3.55E-16 9.00E-14 2.25E-14 4.85E-16 2.00E-14 5.00E-15 1.06E-16 9.00E-13 2.25E-13 7.65E-15 6.00E-13 1.50E-13
9/30/2002 1.17E-16 9.00E-14 2.25E-14 1.61E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 3.68E-15 6.00E-13 1.50E-13
12/30/2002 1.00E-16 9.00E-14 2.25E-14 1.03E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 9.46E-15 6.00E-13 1.50E-13
3/31/2003 1.20E-16 9.00E-14 2.25E-14 1.12E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 4.68E-15 6.00E-13 1.50E-13
6/30/2003 2.18E-16 9.00E-14 2.25E-14 3.40E-16 2.00E-14 5.00E-15 1.67E-16 9.00E-13 2.25E-13 5.96E-15 6.00E-13 1.50E-13
9/29/2003 1.00E-16 9.00E-14 2.25E-14 1.00E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 7.28E-15 6.00E-13 1.50E-13
12/29/2003 1.00E-16 9.00E-14 2.25E-14 2.54E-16 2.00E-14 5.00E-15 3.35E-16 9.00E-13 2.25E-13 6.25E-15 6.00E-13 1.50E-13
3/29/2004 1.00E-16 9.00E-14 2.25E-14 1.00E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 1.54E-14 6.00E-13 1.50E-13
6/27/2004 1.00E-16 9.00E-14 2.25E-14 1.00E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 3.04E-15 6.00E-13 1.50E-13
9/27/2004 1.00E-16 9.00E-14 2.25E-14 1.00E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 1.05E-14 6.00E-13 1.50E-13
12/27/2004 1.00E-16 9.00E-14 2.25E-14 1.00E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 1.59E-14 6.00E-13 1.50E-13
3/28/2005 1.00E-16 9.00E-14 2.25E-14 1.00E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 7.42E-15 6.00E-13 1.50E-13
6/29/2005 1.00E-16 9.00E-14 2.25E-14 1.30E-16 2.00E-14 5.00E-15 1.20E-16 9.00E-13 2.25E-13 7.94E-15 6.00E-13 1.50E-13
9/26/2005 1.00E-16 9.00E-14 2.25E-14 2.56E-16 2.00E-14 5.00E-15 2.42E-16 9.00E-13 2.25E-13 1.22E-14 6.00E-13 1.50E-13
1/3/2006 2.13E-16 9.00E-14 2.25E-14 1.04E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 3.73E-14 6.00E-13 1.50E-13
4/3/2006 1.62E-16 9.00E-14 2.25E-14 1.86E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 8.36E-15 6.00E-13 1.50E-13
7/3/2006 1.86E-16 9.00E-14 2.25E-14 1.00E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 9.77E-15 6.00E-13 1.50E-13
10/2/2006 1.00E-16 9.00E-14 2.25E-14 1.00E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 1.30E-14 6.00E-13 1.50E-13
1/1/2007 1.00E-16 9.00E-14 2.25E-14 1.47E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 1.17E-14 6.00E-13 1.50E-13
4/2/2007 2.23E-16 9.00E-14 2.25E-14 1.63E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 1.65E-14 6.00E-13 1.50E-13
7/2/2007 3.35E-16 9.00E-14 2.25E-14 1.34E-16 2.00E-14 5.00E-15 1.36E-16 9.00E-13 2.25E-13 1.78E-14 6.00E-13 1.50E-13
9/30/2007 1.15E-16 9.00E-14 2.25E-14 1.00E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 7.68E-15 6.00E-13 1.50E-13
12/31/2007 1.00E-16 9.00E-14 2.25E-14 1.93E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 1.31E-14 6.00E-13 1.50E-13
3/31/2008 1.14E-16 9.00E-14 2.25E-14 1.13E-16 2.00E-14 5.00E-15 1.00E-16 9.00E-13 2.25E-13 6.44E-15 6.00E-13 1.50E-13
6/30/2008 7.09E-16 9.00E-14 2.25E-14 3.83E-16 2.00E-14 5.00E-15 2.27E-16 9.00E-13 2.25E-13 6.52E-15 6.00E-13 1.50E-13
Date Effluent Concentration Limit =9E-14 uCi/ml BHV-1U Effluent Concentration Limit =2E-14 uCi/ml BHV-1T Effluent Concentration Limit =9E-13 uCi/ml BHV-1R Effluent Concentration Limit =6E-13 uCi/ml BHV-1PB
ALARA Goal =2.25E-14 uCi/ml ALARA Goal =5E-13 uCi/ml ALARA Goal =2.25E-13 uCi/ml ALARA Goal =1.5E-13 uCi/ml
Pre 1994 MPC Limit =5E-12 uCi/ml Pre 1994 MPC Limit =8E-14 uCi/ml Pre 1994 MPC Limit =2E-12 uCi/ml Pre 1994 MPC Limit =4E-12 uCi/ml
Pre 1994 ALARA GOAL =1.25E-12 uCi/ml Pre 1994 ALARA GOAL =5E-13 uCi/ml Pre 1994 ALARA GOAL =1E-12 uCi/ml
Conc EFC EFC A Conc EFC EFC A Conc EFC EFC A Conc EFC EFC A
9/30/2008 7.69E-16 9.00E-14 2.25E-14 2.94E-16 2.00E-14 5.00E-15 1.90E-16 9.00E-13 2.25E-13 7.64E-15 6.00E-13 1.50E-13
12/31/2008 1.21E-15 9.00E-14 2.25E-14 4.76E-16 2.00E-14 5.00E-15 3.34E-16 9.00E-13 2.25E-13 1.16E-14 6.00E-13 1.50E-13
3/15/2009 2.14E-15 9.00E-14 2.25E-14 1.02E-15 2.00E-14 5.00E-15 1.00E-15 9.00E-13 2.25E-13 4.44E-15 6.00E-13 1.50E-13
6/15/2009 5.97E-17 9.00E-14 2.25E-14 2.35E-16 2.00E-14 5.00E-15 2.18E-16 9.00E-13 2.25E-13 5.13E-15 6.00E-13 1.50E-13
9/15/2009 9.55E-16 9.00E-14 2.25E-14 1.71E-16 2.00E-14 5.00E-15 9.87E-17 9.00E-13 2.25E-13 9.47E-15 6.00E-13 1.50E-13
12/15/2009 1.24E-15 9.00E-14 2.25E-14 9.25E-17 2.00E-14 5.00E-15 5.60E-17 9.00E-13 2.25E-13 5.95E-15 6.00E-13 1.50E-13
3/31/2010 1.97E-15 9.00E-14 2.25E-14 2.15E-16 2.00E-14 5.00E-15 3.27E-16 9.00E-13 2.25E-13 1.00E-14 6.00E-13 1.50E-13
6/30/2010 1.58E-15 9.00E-14 2.25E-14 4.71E-16 2.00E-14 5.00E-15 7.70E-16 9.00E-13 2.25E-13 4.07E-15 6.00E-13 1.50E-13
9/30/2010 8.42E-16 9.00E-14 2.25E-14 2.80E-16 2.00E-14 5.00E-15 1.31E-16 9.00E-13 2.25E-13 6.80E-15 6.00E-13 1.50E-13
12/31/2010 1.27E-15 9.00E-14 2.25E-14 2.32E-16 2.00E-14 5.00E-15 2.30E-16 9.00E-13 2.25E-13 1.27E-14 6.00E-13 1.50E-13
ANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORT
This report was prepared by Energy Laboratories, Inc., 2393 Salt Creek Hwy., Casper, WY 82601. Any exceptions
or problems with the analyses are noted in the Laboratory Analytical Report, the QA/QC Summary Report, or the
Case Narrative.
The results as reported relate only to the item(s) submitted for testing.
If you have any questions regarding these test results, please call.
Sample ID Client Sample ID Collect Date Receive Date Matrix Test
Report Approved By:
C10100417-001 BHV-1 10/04/10 00:00 10/08/10 Filter Composite of two or more samples
Metals, Total
Digestion, Total Metals
Lead 210
Radium 226
Thorium, Isotopic
C10100417-002 BHV-2 10/04/10 00:00 10/08/10 Filter Same As Above
C10100417-003 BHV-4 10/04/10 00:00 10/08/10 Filter Same As Above
C10100417-004 BHV-5 10/04/10 00:00 10/08/10 Filter Same As Above
C10100417-005 BHV-6 10/04/10 00:00 10/08/10 Filter Same As Above
C10100417-006 Blank 10/04/10 00:00 10/08/10 Filter Same As Above
Denison Mines USA Corp
Project Name: 3rd Quarter BHV Air
Workorder No.: C10100417
6425 S Hwy 191
Blanding, UT 84511
December 06, 2010
Energy Laboratories, Inc. received the following 6 samples for Denison Mines USA Corp on 10/8/2010 for analysis.
Page 1 of 23
Project:3rd Quarter BHV Air
CLIENT:Denison Mines USA Corp
Sample Delivery Group:C10100417 CASE NARRATIVE
12/06/10Report Date:
ORIGINAL SAMPLE SUBMITTAL(S)
All original sample submittals have been returned with the data package.
SAMPLE TEMPERATURE COMPLIANCE: 4°C (±2°C)
Temperature of samples received may not be considered properly preserved by accepted standards. Samples that are hand
delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters. Data provided by
this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days). The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay. Maximum recommended delay between end of exposure to
beginning of counting should not exceed 8 days.
SOIL/SOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE, SIMAZINE AND PCB ANALYSIS
Data for PCBs, Atrazine and Simazine are reported from EPA 525.2. PCB data reported by ELI reflects the results for seven
individual Aroclors. When the results for all seven are ND (not detected), the sample meets EPA compliance criteria for
PCB monitoring.
SUBCONTRACTING ANALYSIS
Subcontracting of sample analyses to an outside laboratory may be required. If so, ENERGY LABORATORIES will utilize its
branch laboratories or qualified contract laboratories for this service. Any such laboratories will be indicated within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
eli-b - Energy Laboratories, Inc. - Billings, MT
eli-g - Energy Laboratories, Inc. - Gillette, WY
eli-h - Energy Laboratories, Inc. - Helena, MT
eli-r - Energy Laboratories, Inc. - Rapid City, SD
eli-t - Energy Laboratories, Inc. - College Station, TX
CERTIFICATIONS:
USEPA: WY00002, Radiochemical WY00937; FL-DOH NELAC: E87641, Radiochemical E871017; California: 02118CA;
Oregon: WY200001; Utah: 3072350515; Virginia: 00057; Washington: C1903
ISO 17025 DISCLAIMER:
The results of this Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES, INC. - CASPER,WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities. Some results requested by the client may not be covered
under these certifications. All analysis data to be submitted for regulatory enforcement should be certified in the sample
state of origin. Please verify ELI's certification coverage by visiting www.energylab.com
ELI appreciates the opportunity to provide you with this analytical service. For additional information and services visit our
web page www.energylab.com.
Tests associated with analyst identified as ELI-CS were subcontracted to Energy Laboratories, 415 Graham Rd., College
Station, TX, EPA Number TX01520.
Page 2 of 23
HIGH VOLUME AIR SAMPLING REPORT
CLIENT: Denison Mines USA Corp
REPORT DATE: December 6, 2010
PROJECT: 3rd Quarter BHV Air
SAMPLE ID:BHV-1
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10040255-001 natU 1.97E-15 N/A N/A 1E-16 9E-14 2.18E+00
First Quarter 2010 230Th 2.15E-16 3E-17 5E-18 1E-16 3E-14 7.17E-01
Air Volume in mLs 226Ra 3.27E-16 9E-18 2E-18 1E-16 9E-13 3.63E-02
1.36E+11 210Pb 1.00E-14 9E-17 5E-17 2E-15 6E-13 1.67E+00
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10070338-001 natU 1.58E-15 N/A N/A 1E-16 9E-14 1.76E+00
Second Quarter 2010 230Th 4.71E-16 5E-17 5E-18 1E-16 3E-14 1.57E+00
Air Volume in mLs 226Ra 7.70E-16 3E-17 6E-18 1E-16 9E-13 8.56E-02
1.36E+11 210Pb 4.07E-15 6E-17 6E-17 2E-15 6E-13 6.78E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10100417-001 natU 8.42E-16 N/A N/A 1E-16 9E-14 9.35E-01
Third Quarter 2010 230Th 2.80E-16 5E-17 7E-18 1E-16 3E-14 9.32E-01
Air Volume in mLs 226Ra 1.31E-16 1E-17 6E-18 1E-16 9E-13 1.46E-02
1.37E+11 210Pb 6.80E-15 1E-16 7E-17 2E-15 6E-13 1.13E+00

+LLD's are from Reg. Guide 4.14
*Effluent Concentration from the NEW 10 CFR Part 20 - Appendix B - Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
Page 3 of 23
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:3rd Quarter BHV Air
Lab ID:C10100417-001
Client Sample ID:BHV-1
Collection Date:10/04/10
Matrix:Filter
Report Date:12/06/10
DateReceived:10/08/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
TRACE METALS
11/03/10 21:36 / sml0.2pCi/Filter115Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 08:11 / eli-cspCi/Filter930Lead 210 E909.0M
11/29/10 08:11 / eli-cspCi/Filter15Lead 210 precision (±)E909.0M
11/29/10 08:11 / eli-cspCi/Filter9.7Lead 210 MDC E909.0M
11/02/10 23:47 / jbpCi/Filter18.0Radium 226 E903.0
11/02/10 23:47 / jbpCi/Filter1.9Radium 226 precision (±)E903.0
11/02/10 23:47 / jbpCi/Filter0.8Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter38Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter7.0Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter0.99Thorium 230 MDC E907.0
TRACE METALS
11/03/10 21:36 / sml0.2pCi/Filter115Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 08:11 / eli-cspCi/Filter930Lead 210 E909.0M
11/29/10 08:11 / eli-cspCi/Filter15Lead 210 precision (±)E909.0M
11/29/10 08:11 / eli-cspCi/Filter9.7Lead 210 MDC E909.0M
11/02/10 23:47 / jbpCi/Filter18.0Radium 226 E903.0
11/02/10 23:47 / jbpCi/Filter1.9Radium 226 precision (±)E903.0
11/02/10 23:47 / jbpCi/Filter0.8Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter38Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter7.0Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter0.99Thorium 230 MDC E907.0
TRACE METALS
11/03/10 21:36 / sml0.2pCi/Filter115Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 08:11 / eli-cspCi/Filter930Lead 210 E909.0M
11/29/10 08:11 / eli-cspCi/Filter15Lead 210 precision (±)E909.0M
11/29/10 08:11 / eli-cspCi/Filter9.7Lead 210 MDC E909.0M
11/02/10 23:47 / jbpCi/Filter18.0Radium 226 E903.0
11/02/10 23:47 / jbpCi/Filter1.9Radium 226 precision (±)E903.0
11/02/10 23:47 / jbpCi/Filter0.8Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter38Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter7.0Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter0.99Thorium 230 MDC E907.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 4 of 23
HIGH VOLUME AIR SAMPLING REPORT
CLIENT: Denison Mines USA Corp
REPORT DATE: December 6, 2010
PROJECT: 3rd Quarter BHV Air
SAMPLE ID:BHV-2
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10040255-002 natU 5.47E-16 N/A N/A 1E-16 9E-14 6.07E-01
First Quarter 2010 230Th 1.42E-17 1E-17 5E-18 1E-16 3E-14 4.72E-02
Air Volume in mLs 226Ra 4.66E-17 4E-18 2E-18 1E-16 9E-13 5.18E-03
1.36E+11 210Pb 8.24E-15 8E-17 5E-17 2E-15 6E-13 1.37E+00
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10070338-002 natU 3.58E-16 N/A N/A 1E-16 9E-14 3.97E-01
Second Quarter 2010 230Th 6.64E-17 1E-17 5E-18 1E-16 3E-14 2.21E-01
Air Volume in mLs 226Ra 9.90E-17 1E-17 6E-18 1E-16 9E-13 1.10E-02
1.36E+11 210Pb 2.01E-15 5E-17 6E-17 2E-15 6E-13 3.35E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10100417-002 natU 2.91E-16 N/A N/A 1E-16 9E-14 3.23E-01
Third Quarter 2010 230Th 4.48E-17 1E-17 8E-18 1E-16 3E-14 1.49E-01
Air Volume in mLs 226Ra 5.72E-17 9E-18 5E-18 1E-16 9E-13 6.36E-03
1.37E+11 210Pb 1.08E-15 4E-17 4E-17 2E-15 6E-13 1.79E-01

+LLD's are from Reg. Guide 4.14
*Effluent Concentration from the NEW 10 CFR Part 20 - Appendix B - Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
Page 5 of 23
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:3rd Quarter BHV Air
Lab ID:C10100417-002
Client Sample ID:BHV-2
Collection Date:10/04/10
Matrix:Filter
Report Date:12/06/10
DateReceived:10/08/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
TRACE METALS
11/03/10 21:40 / sml0.2pCi/Filter39.7Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 14:45 / eli-cspCi/Filter147Lead 210 E909.0M
11/29/10 14:45 / eli-cspCi/Filter5.2Lead 210 precision (±)E909.0M
11/29/10 14:45 / eli-cspCi/Filter5.6Lead 210 MDC E909.0M
11/02/10 23:47 / jbpCi/Filter7.8Radium 226 E903.0
11/02/10 23:47 / jbpCi/Filter1.2Radium 226 precision (±)E903.0
11/02/10 23:47 / jbpCi/Filter0.7Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter6.1Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter2.0Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter1.1Thorium 230 MDC E907.0
TRACE METALS
11/03/10 21:40 / sml0.2pCi/Filter39.7Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 14:45 / eli-cspCi/Filter147Lead 210 E909.0M
11/29/10 14:45 / eli-cspCi/Filter5.2Lead 210 precision (±)E909.0M
11/29/10 14:45 / eli-cspCi/Filter5.6Lead 210 MDC E909.0M
11/02/10 23:47 / jbpCi/Filter7.8Radium 226 E903.0
11/02/10 23:47 / jbpCi/Filter1.2Radium 226 precision (±)E903.0
11/02/10 23:47 / jbpCi/Filter0.7Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter6.1Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter2.0Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter1.1Thorium 230 MDC E907.0
TRACE METALS
11/03/10 21:40 / sml0.2pCi/Filter39.7Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 14:45 / eli-cspCi/Filter147Lead 210 E909.0M
11/29/10 14:45 / eli-cspCi/Filter5.2Lead 210 precision (±)E909.0M
11/29/10 14:45 / eli-cspCi/Filter5.6Lead 210 MDC E909.0M
11/02/10 23:47 / jbpCi/Filter7.8Radium 226 E903.0
11/02/10 23:47 / jbpCi/Filter1.2Radium 226 precision (±)E903.0
11/02/10 23:47 / jbpCi/Filter0.7Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter6.1Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter2.0Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter1.1Thorium 230 MDC E907.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 6 of 23
HIGH VOLUME AIR SAMPLING REPORT
CLIENT: Denison Mines USA Corp
REPORT DATE: December 6, 2010
PROJECT: 3rd Quarter BHV Air
SAMPLE ID:BHV-4
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10040255-003 natU 6.01E-15 N/A N/A 1E-16 9E-14 6.67E+00
First Quarter 2010 230Th 1.26E-16 2E-17 4E-18 1E-16 3E-14 4.19E-01
Air Volume in mLs 226Ra 1.34E-16 6E-18 2E-18 1E-16 9E-13 1.49E-02
1.36E+11 210Pb 1.19E-14 1E-16 5E-17 2E-15 6E-13 1.99E+00
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10070338-003 natU 2.33E-15 N/A N/A 1E-16 9E-14 2.59E+00
Second Quarter 2010 230Th 7.29E-16 7E-17 5E-18 1E-16 3E-14 2.43E+00
Air Volume in mLs 226Ra 2.66E-16 2E-17 6E-18 1E-16 9E-13 2.96E-02
1.35E+11 210Pb 3.27E-15 6E-17 6E-17 2E-15 6E-13 5.45E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10100417-003 natU 4.77E-15 N/A N/A 1E-16 9E-14 5.30E+00
Third Quarter 2010 230Th 1.80E-15 3E-16 1E-17 1E-16 3E-14 6.01E+00
Air Volume in mLs 226Ra 8.23E-16 5E-17 1E-17 1E-16 9E-13 9.14E-02
1.16E+11 210Pb 5.11E-15 8E-17 5E-17 2E-15 6E-13 8.52E-01

+LLD's are from Reg. Guide 4.14
*Effluent Concentration from the NEW 10 CFR Part 20 - Appendix B - Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
Page 7 of 23
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:3rd Quarter BHV Air
Lab ID:C10100417-003
Client Sample ID:BHV-4
Collection Date:10/04/10
Matrix:Filter
Report Date:12/06/10
DateReceived:10/08/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
TRACE METALS
11/03/10 22:01 / sml0.2pCi/Filter552Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 16:56 / eli-cspCi/Filter591Lead 210 E909.0M
11/29/10 16:56 / eli-cspCi/Filter9.1Lead 210 precision (±)E909.0M
11/29/10 16:56 / eli-cspCi/Filter6.0Lead 210 MDC E909.0M
11/02/10 23:47 / jbpCi/Filter95.2Radium 226 E903.0
11/02/10 23:47 / jbpCi/Filter5.2Radium 226 precision (±)E903.0
11/02/10 23:47 / jbpCi/Filter1.1Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter209Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter31Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter1.4Thorium 230 MDC E907.0
TRACE METALS
11/03/10 22:01 / sml0.2pCi/Filter552Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 16:56 / eli-cspCi/Filter591Lead 210 E909.0M
11/29/10 16:56 / eli-cspCi/Filter9.1Lead 210 precision (±)E909.0M
11/29/10 16:56 / eli-cspCi/Filter6.0Lead 210 MDC E909.0M
11/02/10 23:47 / jbpCi/Filter95.2Radium 226 E903.0
11/02/10 23:47 / jbpCi/Filter5.2Radium 226 precision (±)E903.0
11/02/10 23:47 / jbpCi/Filter1.1Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter209Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter31Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter1.4Thorium 230 MDC E907.0
TRACE METALS
11/03/10 22:01 / sml0.2pCi/Filter552Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 16:56 / eli-cspCi/Filter591Lead 210 E909.0M
11/29/10 16:56 / eli-cspCi/Filter9.1Lead 210 precision (±)E909.0M
11/29/10 16:56 / eli-cspCi/Filter6.0Lead 210 MDC E909.0M
11/02/10 23:47 / jbpCi/Filter95.2Radium 226 E903.0
11/02/10 23:47 / jbpCi/Filter5.2Radium 226 precision (±)E903.0
11/02/10 23:47 / jbpCi/Filter1.1Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter209Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter31Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter1.4Thorium 230 MDC E907.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 8 of 23
HIGH VOLUME AIR SAMPLING REPORT
CLIENT: Denison Mines USA Corp
REPORT DATE: December 6, 2010
PROJECT: 3rd Quarter BHV Air
SAMPLE ID:BHV-5
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10040255-004 natU 4.78E-15 N/A N/A 1E-16 9E-14 5.31E+00
First Quarter 2010 230Th 3.73E-16 4E-17 6E-18 1E-16 3E-14 1.24E+00
Air Volume in mLs 226Ra 4.19E-16 1E-17 2E-18 1E-16 9E-13 4.66E-02
1.36E+11 210Pb 1.30E-14 1E-16 5E-17 2E-15 6E-13 2.17E+00
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10070338-004 natU 4.35E-15 N/A N/A 1E-16 9E-14 4.83E+00
Second Quarter 2010 230Th 7.84E-16 7E-17 7E-18 1E-16 3E-14 2.61E+00
Air Volume in mLs 226Ra 1.05E-15 4E-17 6E-18 1E-16 9E-13 1.16E-01
1.36E+11 210Pb 4.40E-15 7E-17 6E-17 2E-15 6E-13 7.33E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10100417-004 natU 3.57E-15 N/A N/A 1E-16 9E-14 3.97E+00
Third Quarter 2010 230Th 1.14E-15 2E-16 2E-17 1E-16 3E-14 3.81E+00
Air Volume in mLs 226Ra 7.97E-16 3E-17 5E-18 1E-16 9E-13 8.86E-02
1.03E+11 210Pb 3.78E-15 7E-17 6E-17 2E-15 6E-13 6.30E-01

+LLD's are from Reg. Guide 4.14
*Effluent Concentration from the NEW 10 CFR Part 20 - Appendix B - Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
Page 9 of 23
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:3rd Quarter BHV Air
Lab ID:C10100417-004
Client Sample ID:BHV-5
Collection Date:10/04/10
Matrix:Filter
Report Date:12/06/10
DateReceived:10/08/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
TRACE METALS
11/03/10 22:05 / sml0.2pCi/Filter369Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 19:08 / eli-cspCi/Filter391Lead 210 E909.0M
11/29/10 19:08 / eli-cspCi/Filter7.7Lead 210 precision (±)E909.0M
11/29/10 19:08 / eli-cspCi/Filter6.0Lead 210 MDC E909.0M
11/02/10 23:47 / jbpCi/Filter82.3Radium 226 E903.0
11/02/10 23:47 / jbpCi/Filter3.4Radium 226 precision (±)E903.0
11/02/10 23:47 / jbpCi/Filter0.5Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter118Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter21Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter1.8Thorium 230 MDC E907.0
TRACE METALS
11/03/10 22:05 / sml0.2pCi/Filter369Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 19:08 / eli-cspCi/Filter391Lead 210 E909.0M
11/29/10 19:08 / eli-cspCi/Filter7.7Lead 210 precision (±)E909.0M
11/29/10 19:08 / eli-cspCi/Filter6.0Lead 210 MDC E909.0M
11/02/10 23:47 / jbpCi/Filter82.3Radium 226 E903.0
11/02/10 23:47 / jbpCi/Filter3.4Radium 226 precision (±)E903.0
11/02/10 23:47 / jbpCi/Filter0.5Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter118Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter21Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter1.8Thorium 230 MDC E907.0
TRACE METALS
11/03/10 22:05 / sml0.2pCi/Filter369Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 19:08 / eli-cspCi/Filter391Lead 210 E909.0M
11/29/10 19:08 / eli-cspCi/Filter7.7Lead 210 precision (±)E909.0M
11/29/10 19:08 / eli-cspCi/Filter6.0Lead 210 MDC E909.0M
11/02/10 23:47 / jbpCi/Filter82.3Radium 226 E903.0
11/02/10 23:47 / jbpCi/Filter3.4Radium 226 precision (±)E903.0
11/02/10 23:47 / jbpCi/Filter0.5Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter118Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter21Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter1.8Thorium 230 MDC E907.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 10 of 23
HIGH VOLUME AIR SAMPLING REPORT
CLIENT: Denison Mines USA Corp
REPORT DATE: December 6, 2010
PROJECT: 3rd Quarter BHV Air
SAMPLE ID:BHV-6
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10040255-005 natU 9.63E-15 N/A N/A 1E-16 9E-14 1.07E+01
First Quarter 2010 230Th 1.82E-16 2E-17 4E-18 1E-16 3E-14 6.07E-01
Air Volume in mLs 226Ra 2.06E-16 7E-18 2E-18 1E-16 9E-13 2.29E-02
1.36E+11 210Pb 1.37E-14 1E-16 5E-17 2E-15 6E-13 2.29E+00
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10070338-005 natU 3.62E-15 N/A N/A 1E-16 9E-14 4.02E+00
Second Quarter 2010 230Th 3.94E-16 4E-17 5E-18 1E-16 3E-14 1.31E+00
Air Volume in mLs 226Ra 4.89E-16 2E-17 5E-18 1E-16 9E-13 5.43E-02
1.35E+11 210Pb 4.30E-15 7E-17 6E-17 2E-15 6E-13 7.17E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10100417-005 natU 5.42E-15 N/A N/A 1E-16 9E-14 6.02E+00
Third Quarter 2010 230Th 1.08E-15 2E-16 2E-17 1E-16 3E-14 3.61E+00
Air Volume in mLs 226Ra 5.68E-16 3E-17 6E-18 1E-16 9E-13 6.31E-02
1.03E+11 210Pb 3.98E-15 8E-17 6E-17 2E-15 6E-13 6.63E-01

+LLD's are from Reg. Guide 4.14
*Effluent Concentration from the NEW 10 CFR Part 20 - Appendix B - Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
Page 11 of 23
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:3rd Quarter BHV Air
Lab ID:C10100417-005
Client Sample ID:BHV-6
Collection Date:10/04/10
Matrix:Filter
Report Date:12/06/10
DateReceived:10/08/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
TRACE METALS
11/03/10 22:09 / sml0.2pCi/Filter559Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 21:19 / eli-cspCi/Filter411Lead 210 E909.0M
11/29/10 21:19 / eli-cspCi/Filter7.8Lead 210 precision (±)E909.0M
11/29/10 21:19 / eli-cspCi/Filter6.0Lead 210 MDC E909.0M
11/03/10 01:33 / jbpCi/Filter58.6Radium 226 E903.0
11/03/10 01:33 / jbpCi/Filter3.0Radium 226 precision (±)E903.0
11/03/10 01:33 / jbpCi/Filter0.6Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter112Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter20Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter1.8Thorium 230 MDC E907.0
TRACE METALS
11/03/10 22:09 / sml0.2pCi/Filter559Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 21:19 / eli-cspCi/Filter411Lead 210 E909.0M
11/29/10 21:19 / eli-cspCi/Filter7.8Lead 210 precision (±)E909.0M
11/29/10 21:19 / eli-cspCi/Filter6.0Lead 210 MDC E909.0M
11/03/10 01:33 / jbpCi/Filter58.6Radium 226 E903.0
11/03/10 01:33 / jbpCi/Filter3.0Radium 226 precision (±)E903.0
11/03/10 01:33 / jbpCi/Filter0.6Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter112Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter20Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter1.8Thorium 230 MDC E907.0
TRACE METALS
11/03/10 22:09 / sml0.2pCi/Filter559Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
11/29/10 21:19 / eli-cspCi/Filter411Lead 210 E909.0M
11/29/10 21:19 / eli-cspCi/Filter7.8Lead 210 precision (±)E909.0M
11/29/10 21:19 / eli-cspCi/Filter6.0Lead 210 MDC E909.0M
11/03/10 01:33 / jbpCi/Filter58.6Radium 226 E903.0
11/03/10 01:33 / jbpCi/Filter3.0Radium 226 precision (±)E903.0
11/03/10 01:33 / jbpCi/Filter0.6Radium 226 MDC E903.0
10/27/10 16:54 / dmfpCi/Filter112Thorium 230 E907.0
10/27/10 16:54 / dmfpCi/Filter20Thorium 230 precision (±)E907.0
10/27/10 16:54 / dmfpCi/Filter1.8Thorium 230 MDC E907.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 12 of 23
HIGH VOLUME AIR SAMPLING REPORT
CLIENT: Denison Mines USA Corp
REPORT DATE: December 6, 2010
PROJECT: 3rd Quarter BHV Air
SAMPLE ID:Blank
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10040255-006 natU 1.67E-17 N/A N/A 1E-16 9E-14 1.86E-02
First Quarter 2010 230Th -3.03E-18 4E-18 5E-18 1E-16 3E-14 -1.01E-02
Air Volume in mLs 226Ra 1.48E-18 1E-18 2E-18 1E-16 9E-13 1.64E-04
1.36E+11 210Pb 3.50E-17 3E-17 5E-17 2E-15 6E-13 5.83E-03
Note: This sample uses 136,000,000 L of air volume for comparison purposes.
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10070338-006 natU 2.71E-17 N/A N/A 1E-16 9E-14 3.02E-02
Second Quarter 2010 230Th -2.63E-19 5E-18 6E-18 1E-16 3E-14 -8.75E-04
Air Volume in mLs 226Ra 9.74E-18 4E-18 5E-18 1E-16 9E-13 1.08E-03
1.36E+11 210Pb 7.47E-18 3E-17 6E-17 2E-15 6E-13 1.24E-03
Note: This sample uses 136,000,000 L of air volume for comparison purposes.
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10100417-006 natU 9.01E-18 N/A N/A 1E-16 9E-14 1.00E-02
Third Quarter 2010 230Th -1.63E-18 7E-18 1E-17 1E-16 3E-14 -5.44E-03
Air Volume in mLs 226Ra 1.27E-18 4E-18 7E-18 1E-16 9E-13 1.41E-04
1.36E+11 210Pb -2.26E-17 3E-17 4E-17 2E-15 6E-13 -3.76E-03
Note: This sample uses 136,000,000 L of air volume for comparison purposes.

+LLD's are from Reg. Guide 4.14
*Effluent Concentration from the NEW 10 CFR Part 20 - Appendix B - Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
Page 13 of 23
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:3rd Quarter BHV Air
Lab ID:C10100417-006
Client Sample ID:Blank
Collection Date:10/04/10
Matrix:Filter
Report Date:12/06/10
DateReceived:10/08/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
TRACE METALS
11/03/10 22:13 / sml0.2pCi/Filter1.2Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
U 11/29/10 23:31 / eli-cspCi/Filter-3Lead 210 E909.0M
11/29/10 23:31 / eli-cspCi/Filter3.6Lead 210 precision (±)E909.0M
11/29/10 23:31 / eli-cspCi/Filter6.1Lead 210 MDC E909.0M
U 11/03/10 01:33 / jbpCi/Filter0.2Radium 226 E903.0
11/03/10 01:33 / jbpCi/Filter0.6Radium 226 precision (±)E903.0
11/03/10 01:33 / jbpCi/Filter0.9Radium 226 MDC E903.0
U 10/27/10 16:55 / dmfpCi/Filter-0.2Thorium 230 E907.0
10/27/10 16:55 / dmfpCi/Filter0.97Thorium 230 precision (±)E907.0
10/27/10 16:55 / dmfpCi/Filter1.3Thorium 230 MDC E907.0
TRACE METALS
11/03/10 22:13 / sml0.2pCi/Filter1.2Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
U 11/29/10 23:31 / eli-cspCi/Filter-3Lead 210 E909.0M
11/29/10 23:31 / eli-cspCi/Filter3.6Lead 210 precision (±)E909.0M
11/29/10 23:31 / eli-cspCi/Filter6.1Lead 210 MDC E909.0M
U 11/03/10 01:33 / jbpCi/Filter0.2Radium 226 E903.0
11/03/10 01:33 / jbpCi/Filter0.6Radium 226 precision (±)E903.0
11/03/10 01:33 / jbpCi/Filter0.9Radium 226 MDC E903.0
U 10/27/10 16:55 / dmfpCi/Filter-0.2Thorium 230 E907.0
10/27/10 16:55 / dmfpCi/Filter0.97Thorium 230 precision (±)E907.0
10/27/10 16:55 / dmfpCi/Filter1.3Thorium 230 MDC E907.0
TRACE METALS
11/03/10 22:13 / sml0.2pCi/Filter1.2Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
U 11/29/10 23:31 / eli-cspCi/Filter-3Lead 210 E909.0M
11/29/10 23:31 / eli-cspCi/Filter3.6Lead 210 precision (±)E909.0M
11/29/10 23:31 / eli-cspCi/Filter6.1Lead 210 MDC E909.0M
U 11/03/10 01:33 / jbpCi/Filter0.2Radium 226 E903.0
11/03/10 01:33 / jbpCi/Filter0.6Radium 226 precision (±)E903.0
11/03/10 01:33 / jbpCi/Filter0.9Radium 226 MDC E903.0
U 10/27/10 16:55 / dmfpCi/Filter-0.2Thorium 230 E907.0
10/27/10 16:55 / dmfpCi/Filter0.97Thorium 230 precision (±)E907.0
10/27/10 16:55 / dmfpCi/Filter1.3Thorium 230 MDC E907.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 14 of 23
Project:3rd Quarter BHV Air
Client:Denison Mines USA Corp
Work Order:C10100417
QA/QC Summary Report
12/06/10Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Method: E903.0 Batch: R139385
Sample ID: C10100240-001AMS 11/02/10 21:56Sample Matrix Spike Run: BERTHOLD 770-1_101027A
Radium 226 116 70 13059.9 pCi/Filter
Sample ID: C10100240-001AMSD 11/02/10 21:56Sample Matrix Spike Duplicate Run: BERTHOLD 770-1_101027A
Radium 226 108 70 130 26.86.856.0 pCi/Filter
Sample ID: C10100240-002ADUP 11/02/10 21:56Sample Duplicate Run: BERTHOLD 770-1_101027A3
Radium 226 79.3222.19 pCi/Filter
Radium 226 precision (±) 0.873 pCi/Filter
Radium 226 MDC 0.919 pCi/Filter
Sample ID: LCS-27771 11/02/10 23:47Laboratory Control Sample Run: BERTHOLD 770-1_101027A
Radium 226 94 70 13014.0 pCi/Filter
Sample ID: MB-27771 11/02/10 23:47Method Blank Run: BERTHOLD 770-1_101027A3
Radium 226 -0.1 pCi/Filter U
Radium 226 precision (±) 0.2 pCi/Filter
Radium 226 MDC 0.4 pCi/Filter
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 15 of 23
Project:3rd Quarter BHV Air
Client:Denison Mines USA Corp
Work Order:C10100417
QA/QC Summary Report
12/06/10Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Method: E907.0 Batch: 27878
Sample ID: C10100417-006AMS 10/27/10 16:55Sample Matrix Spike Run: EGG-ORTEC_101025B
Thorium 230 116 70 13056.2 pCi/Filter
Sample ID: C10100417-006AMSD 10/27/10 16:55Sample Matrix Spike Duplicate Run: EGG-ORTEC_101025B
Thorium 230 120 70 130 51.71.256.9 pCi/Filter
Sample ID: LCS-27878 10/28/10 09:34Laboratory Control Sample Run: EGG-ORTEC_101025B
Thorium 230 83 70 1303.81 pCi/Filter
Sample ID: MB-27878 10/28/10 09:34Method Blank Run: EGG-ORTEC_101025B3
Thorium 230 -0.2 pCi/Filter U
Thorium 230 precision (±) 0.1 pCi/Filter
Thorium 230 MDC 0.2 pCi/Filter
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 16 of 23
Project:3rd Quarter BHV Air
Client:Denison Mines USA Corp
Work Order:C10100417
QA/QC Summary Report
12/06/10Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Method: E909.0M Batch: T_PB-210-0044
Sample ID: MB-12622 / 27878 11/29/10 03:48Method Blank Run: SUB-T379003
Lead 210 0.08 pCi/L U
Lead 210 precision (±) 4 pCi/L
Lead 210 MDC 6 pCi/L
Sample ID: LCS-12622 / 27878 11/29/10 06:00Laboratory Control Sample Run: SUB-T37900
Lead 210 19 70 13043 pCi/L S
- LCS response is outside of the acceptance range for this analysis. Since the MB, MSD, and second LCS are acceptable the batch is approved.
Sample ID: T10100081-001AMS 11/29/10 10:22Sample Matrix Spike Run: SUB-T37900
Lead 210 150 70 1302570 pCi/Filter S
- Sample response is much larger than spike amount, therefore small variances in the sample adversely affected the recovery. The second LCS and the RPD of the MS/MSD
pair meets acceptance criteria; this batch is approved.
Sample ID: T10100081-001AMSD 11/29/10 12:34Sample Matrix Spike Duplicate Run: SUB-T37900
Lead 210 129 70 130 13.59.92330 pCi/Filter
Sample ID: MB-12669 / 27996 11/30/10 21:24Method Blank Run: SUB-T379003
Lead 210 -2 pCi/L U
Lead 210 precision (±) 4 pCi/L
Lead 210 MDC 7 pCi/L
Sample ID: LCS-12669 / 27996 11/30/10 23:36Laboratory Control Sample Run: SUB-T37900
Lead 210 94 70 130220 pCi/L
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration S - Spike recovery outside of advisory limits.
U - Not detected at minimum detectable concentration
Page 17 of 23
Project:3rd Quarter BHV Air
Client:Denison Mines USA Corp
Work Order:C10100417
QA/QC Summary Report
12/06/10Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Method: SW6020 Batch: 27878
Sample ID: MB-27878 11/03/10 21:20Method Blank Run: ICPMS2-C_101103A
Uranium 6E-050.0003 mg/filter
Sample ID: LCS2-27878 11/03/10 21:24Laboratory Control Sample Run: ICPMS2-C_101103A
Uranium 101 85 1150.000300.102 mg/filter
Sample ID: C10100587-007AMS 11/03/10 23:03Sample Matrix Spike Run: ICPMS2-C_101103A
Uranium 101 75 1250.000301.67E-08 mg/filter
Sample ID: C10100587-007AMSD 11/03/10 23:07Sample Matrix Spike Duplicate Run: ICPMS2-C_101103A
Uranium 101 75 125 200.000301.67E-08 mg/filter
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 18 of 23
Page 19 of 23
Page 20 of 23
Page 21 of 23
Page 22 of 23
Page 23 of 23
ANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORT
This report was prepared by Energy Laboratories, Inc., 2393 Salt Creek Hwy., Casper, WY 82601. Any exceptions
or problems with the analyses are noted in the Laboratory Analytical Report, the QA/QC Summary Report, or the
Case Narrative.
The results as reported relate only to the item(s) submitted for testing.
If you have any questions regarding these test results, please call.
Sample ID Client Sample ID Collect Date Receive Date Matrix Test
Report Approved By:
C11010188-001 BHV-1 01/04/11 00:00 01/06/11 Filter Composite of two or more samples
Metals, Total
Digestion, Total Metals
Lead 210
Radium 226
Thorium, Isotopic
C11010188-002 BHV-2 01/04/11 00:00 01/06/11 Filter Same As Above
C11010188-003 BHV-4 01/04/11 00:00 01/06/11 Filter Same As Above
C11010188-004 BHV-5 01/04/11 00:00 01/06/11 Filter Same As Above
C11010188-005 BHV-6 01/04/11 00:00 01/06/11 Filter Same As Above
C11010188-006 Blank 01/04/11 00:00 01/06/11 Filter Same As Above
Denison Mines USA Corp
Project Name: 4th Quarter BHV Air
Workorder No.: C11010188
6425 S Hwy 191
Blanding, UT 84511
February 08, 2011
Energy Laboratories, Inc. Casper WY received the following 6 samples for Denison Mines USA Corp on 1/6/2011 for analysis.
Page 1 of 22
Project:4th Quarter BHV Air
CLIENT:Denison Mines USA Corp
Sample Delivery Group:C11010188 CASE NARRATIVE
02/08/11Report Date:
ORIGINAL SAMPLE SUBMITTAL(S)
All original sample submittals have been returned with the data package.
SAMPLE TEMPERATURE COMPLIANCE: 4°C (±2°C)
Temperature of samples received may not be considered properly preserved by accepted standards. Samples that are hand
delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters. Data provided by
this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days). The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay. Maximum recommended delay between end of exposure to
beginning of counting should not exceed 8 days.
SOIL/SOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE, SIMAZINE AND PCB ANALYSIS
Data for PCBs, Atrazine and Simazine are reported from EPA 525.2. PCB data reported by ELI reflects the results for seven
individual Aroclors. When the results for all seven are ND (not detected), the sample meets EPA compliance criteria for
PCB monitoring.
SUBCONTRACTING ANALYSIS
Subcontracting of sample analyses to an outside laboratory may be required. If so, ENERGY LABORATORIES will utilize its
branch laboratories or qualified contract laboratories for this service. Any such laboratories will be indicated within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
eli-b - Energy Laboratories, Inc. - Billings, MT
eli-g - Energy Laboratories, Inc. - Gillette, WY
eli-h - Energy Laboratories, Inc. - Helena, MT
eli-r - Energy Laboratories, Inc. - Rapid City, SD
eli-t - Energy Laboratories, Inc. - College Station, TX
CERTIFICATIONS:
USEPA: WY00002, Radiochemical WY00937; FL-DOH NELAC: E87641, Radiochemical E871017; California: 02118CA;
Oregon: WY200001; Utah: 3072350515; Virginia: 00057; Washington: C1903
ISO 17025 DISCLAIMER:
The results of this Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES, INC. - CASPER,WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities. Some results requested by the client may not be covered
under these certifications. All analysis data to be submitted for regulatory enforcement should be certified in the sample
state of origin. Please verify ELI's certification coverage by visiting www.energylab.com
ELI appreciates the opportunity to provide you with this analytical service. For additional information and services visit our
web page www.energylab.com.
Tests associated with analyst identified as ELI-CS were subcontracted to Energy Laboratories, 415 Graham Rd., College
Station, TX, EPA Number TX01520.
Page 2 of 22
HIGH VOLUME AIR SAMPLING REPORT
CLIENT: Denison Mines USA Corp
REPORT DATE: February 9, 2011
PROJECT: 4th Quarter BHV Air
SAMPLE ID:BHV-1
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10040255-001 natU 1.97E-15 N/A N/A 1E-16 9E-14 2.18E+00
First Quarter 2010 230Th 2.15E-16 3E-17 5E-18 1E-16 3E-14 7.17E-01
Air Volume in mLs 226Ra 3.27E-16 9E-18 2E-18 1E-16 9E-13 3.63E-02
1.36E+11 210Pb 1.00E-14 9E-17 5E-17 2E-15 6E-13 1.67E+00
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10070338-001 natU 1.58E-15 N/A N/A 1E-16 9E-14 1.76E+00
Second Quarter 2010 230Th 4.71E-16 5E-17 5E-18 1E-16 3E-14 1.57E+00
Air Volume in mLs 226Ra 7.70E-16 3E-17 6E-18 1E-16 9E-13 8.56E-02
1.36E+11 210Pb 4.07E-15 6E-17 6E-17 2E-15 6E-13 6.78E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10100417-001 natU 8.42E-16 N/A N/A 1E-16 9E-14 9.35E-01
Third Quarter 2010 230Th 2.80E-16 5E-17 7E-18 1E-16 3E-14 9.32E-01
Air Volume in mLs 226Ra 1.31E-16 1E-17 6E-18 1E-16 9E-13 1.46E-02
1.37E+11 210Pb 6.80E-15 1E-16 7E-17 2E-15 6E-13 1.13E+00
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C11010188-001 natU 1.27E-15 N/A N/A 1E-16 9E-14 1.41E+00
Fourth Quarter 2010 230Th 2.32E-16 3E-17 1E-17 1E-16 3E-14 7.72E-01
Air Volume in mLs 226Ra 2.30E-16 1E-17 3E-18 1E-16 9E-13 2.55E-02
1.39E+11 210Pb 1.27E-14 1E-16 7E-17 2E-15 6E-13 2.12E+00

+LLD's are from Reg. Guide 4.14
*Effluent Concentration from the NEW 10 CFR Part 20 - Appendix B - Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
Page 3 of 22
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:4th Quarter BHV Air
Lab ID:C11010188-001
Client Sample ID:BHV-1
Collection Date:01/04/11
Matrix:Filter
Report Date:02/08/11
DateReceived:01/06/11
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
Prepared by Casper, WY Branch
TRACE METALS
01/19/11 18:53 / sml0.0003mg/filter0.262Uranium SW6020
01/19/11 18:53 / sml0.2pCi/Filter177Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 08:42 / eli-cspCi/Filter1780Lead 210 E909.0
01/26/11 08:42 / eli-cspCi/Filter21Lead 210 precision (±)E909.0
01/26/11 08:42 / eli-cspCi/Filter10Lead 210 MDC E909.0
01/19/11 18:30 / trspCi/Filter32.0Radium 226 E903.0
01/19/11 18:30 / trspCi/Filter1.5Radium 226 precision (±)E903.0
01/19/11 18:30 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:03 / dmfpCi/Filter32Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter4.7Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter1.6Thorium 230 MDC E908.0
TRACE METALS
01/19/11 18:53 / sml0.0003mg/filter0.262Uranium SW6020
01/19/11 18:53 / sml0.2pCi/Filter177Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 08:42 / eli-cspCi/Filter1780Lead 210 E909.0
01/26/11 08:42 / eli-cspCi/Filter21Lead 210 precision (±)E909.0
01/26/11 08:42 / eli-cspCi/Filter10Lead 210 MDC E909.0
01/19/11 18:30 / trspCi/Filter32.0Radium 226 E903.0
01/19/11 18:30 / trspCi/Filter1.5Radium 226 precision (±)E903.0
01/19/11 18:30 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:03 / dmfpCi/Filter32Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter4.7Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter1.6Thorium 230 MDC E908.0
TRACE METALS
01/19/11 18:53 / sml0.0003mg/filter0.262Uranium SW6020
01/19/11 18:53 / sml0.2pCi/Filter177Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 08:42 / eli-cspCi/Filter1780Lead 210 E909.0
01/26/11 08:42 / eli-cspCi/Filter21Lead 210 precision (±)E909.0
01/26/11 08:42 / eli-cspCi/Filter10Lead 210 MDC E909.0
01/19/11 18:30 / trspCi/Filter32.0Radium 226 E903.0
01/19/11 18:30 / trspCi/Filter1.5Radium 226 precision (±)E903.0
01/19/11 18:30 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:03 / dmfpCi/Filter32Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter4.7Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter1.6Thorium 230 MDC E908.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 4 of 22
HIGH VOLUME AIR SAMPLING REPORT
CLIENT: Denison Mines USA Corp
REPORT DATE: February 9, 2011
PROJECT: 4th Quarter BHV Air
SAMPLE ID:BHV-2
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10040255-002 natU 5.47E-16 N/A N/A 1E-16 9E-14 6.07E-01
First Quarter 2010 230Th 1.42E-17 1E-17 5E-18 1E-16 3E-14 4.72E-02
Air Volume in mLs 226Ra 4.66E-17 4E-18 2E-18 1E-16 9E-13 5.18E-03
1.36E+11 210Pb 8.24E-15 8E-17 5E-17 2E-15 6E-13 1.37E+00
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10070338-002 natU 3.58E-16 N/A N/A 1E-16 9E-14 3.97E-01
Second Quarter 2010 230Th 6.64E-17 1E-17 5E-18 1E-16 3E-14 2.21E-01
Air Volume in mLs 226Ra 9.90E-17 1E-17 6E-18 1E-16 9E-13 1.10E-02
1.36E+11 210Pb 2.01E-15 5E-17 6E-17 2E-15 6E-13 3.35E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10100417-002 natU 2.91E-16 N/A N/A 1E-16 9E-14 3.23E-01
Third Quarter 2010 230Th 4.48E-17 1E-17 8E-18 1E-16 3E-14 1.49E-01
Air Volume in mLs 226Ra 5.72E-17 9E-18 5E-18 1E-16 9E-13 6.36E-03
1.37E+11 210Pb 1.08E-15 4E-17 4E-17 2E-15 6E-13 1.79E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C11010188-002 natU 5.73E-16 N/A N/A 1E-16 9E-14 6.37E-01
Fourth Quarter 2010 230Th 7.24E-17 1E-17 4E-18 1E-16 3E-14 2.41E-01
Air Volume in mLs 226Ra 6.76E-17 6E-18 3E-18 1E-16 9E-13 7.51E-03
1.38E+11 210Pb 1.35E-14 1E-16 7E-17 2E-15 6E-13 2.26E+00

+LLD's are from Reg. Guide 4.14
*Effluent Concentration from the NEW 10 CFR Part 20 - Appendix B - Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
Page 5 of 22
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:4th Quarter BHV Air
Lab ID:C11010188-002
Client Sample ID:BHV-2
Collection Date:01/04/11
Matrix:Filter
Report Date:02/08/11
DateReceived:01/06/11
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
Prepared by Casper, WY Branch
TRACE METALS
01/19/11 19:14 / sml0.0003mg/filter0.117Uranium SW6020
01/19/11 19:14 / sml0.2pCi/Filter78.9Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 15:16 / eli-cspCi/Filter1860Lead 210 E909.0
01/26/11 15:16 / eli-cspCi/Filter20Lead 210 precision (±)E909.0
01/26/11 15:16 / eli-cspCi/Filter9.2Lead 210 MDC E909.0
01/19/11 22:28 / trspCi/Filter9.3Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter0.8Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:03 / dmfpCi/Filter10Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter1.7Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter0.50Thorium 230 MDC E908.0
TRACE METALS
01/19/11 19:14 / sml0.0003mg/filter0.117Uranium SW6020
01/19/11 19:14 / sml0.2pCi/Filter78.9Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 15:16 / eli-cspCi/Filter1860Lead 210 E909.0
01/26/11 15:16 / eli-cspCi/Filter20Lead 210 precision (±)E909.0
01/26/11 15:16 / eli-cspCi/Filter9.2Lead 210 MDC E909.0
01/19/11 22:28 / trspCi/Filter9.3Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter0.8Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:03 / dmfpCi/Filter10Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter1.7Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter0.50Thorium 230 MDC E908.0
TRACE METALS
01/19/11 19:14 / sml0.0003mg/filter0.117Uranium SW6020
01/19/11 19:14 / sml0.2pCi/Filter78.9Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 15:16 / eli-cspCi/Filter1860Lead 210 E909.0
01/26/11 15:16 / eli-cspCi/Filter20Lead 210 precision (±)E909.0
01/26/11 15:16 / eli-cspCi/Filter9.2Lead 210 MDC E909.0
01/19/11 22:28 / trspCi/Filter9.3Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter0.8Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:03 / dmfpCi/Filter10Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter1.7Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter0.50Thorium 230 MDC E908.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 6 of 22
HIGH VOLUME AIR SAMPLING REPORT
CLIENT: Denison Mines USA Corp
REPORT DATE: February 9, 2011
PROJECT: 4th Quarter BHV Air
SAMPLE ID:BHV-4
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10040255-003 natU 6.01E-15 N/A N/A 1E-16 9E-14 6.67E+00
First Quarter 2010 230Th 1.26E-16 2E-17 4E-18 1E-16 3E-14 4.19E-01
Air Volume in mLs 226Ra 1.34E-16 6E-18 2E-18 1E-16 9E-13 1.49E-02
1.36E+11 210Pb 1.19E-14 1E-16 5E-17 2E-15 6E-13 1.99E+00
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10070338-003 natU 2.33E-15 N/A N/A 1E-16 9E-14 2.59E+00
Second Quarter 2010 230Th 7.29E-16 7E-17 5E-18 1E-16 3E-14 2.43E+00
Air Volume in mLs 226Ra 2.66E-16 2E-17 6E-18 1E-16 9E-13 2.96E-02
1.35E+11 210Pb 3.27E-15 6E-17 6E-17 2E-15 6E-13 5.45E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10100417-003 natU 4.77E-15 N/A N/A 1E-16 9E-14 5.30E+00
Third Quarter 2010 230Th 1.80E-15 3E-16 1E-17 1E-16 3E-14 6.01E+00
Air Volume in mLs 226Ra 8.23E-16 5E-17 1E-17 1E-16 9E-13 9.14E-02
1.16E+11 210Pb 5.11E-15 8E-17 5E-17 2E-15 6E-13 8.52E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C11010188-003 natU 3.93E-15 N/A N/A 1E-16 9E-14 4.37E+00
Fourth Quarter 2010 230Th 3.90E-16 9E-17 6E-17 1E-16 3E-14 1.30E+00
Air Volume in mLs 226Ra 2.56E-16 1E-17 3E-18 1E-16 9E-13 2.84E-02
1.37E+11 210Pb 1.13E-14 1E-16 7E-17 2E-15 6E-13 1.89E+00

+LLD's are from Reg. Guide 4.14
*Effluent Concentration from the NEW 10 CFR Part 20 - Appendix B - Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
Page 7 of 22
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:4th Quarter BHV Air
Lab ID:C11010188-003
Client Sample ID:BHV-4
Collection Date:01/04/11
Matrix:Filter
Report Date:02/08/11
DateReceived:01/06/11
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
Prepared by Casper, WY Branch
TRACE METALS
01/19/11 19:18 / sml0.0003mg/filter0.795Uranium SW6020
01/19/11 19:18 / sml0.2pCi/Filter538Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 17:27 / eli-cspCi/Filter1550Lead 210 E909.0
01/26/11 17:27 / eli-cspCi/Filter18Lead 210 precision (±)E909.0
01/26/11 17:27 / eli-cspCi/Filter9.1Lead 210 MDC E909.0
01/19/11 22:28 / trspCi/Filter35.1Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter1.6Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:03 / dmfpCi/Filter53Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter12Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter7.6Thorium 230 MDC E908.0
TRACE METALS
01/19/11 19:18 / sml0.0003mg/filter0.795Uranium SW6020
01/19/11 19:18 / sml0.2pCi/Filter538Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 17:27 / eli-cspCi/Filter1550Lead 210 E909.0
01/26/11 17:27 / eli-cspCi/Filter18Lead 210 precision (±)E909.0
01/26/11 17:27 / eli-cspCi/Filter9.1Lead 210 MDC E909.0
01/19/11 22:28 / trspCi/Filter35.1Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter1.6Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:03 / dmfpCi/Filter53Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter12Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter7.6Thorium 230 MDC E908.0
TRACE METALS
01/19/11 19:18 / sml0.0003mg/filter0.795Uranium SW6020
01/19/11 19:18 / sml0.2pCi/Filter538Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 17:27 / eli-cspCi/Filter1550Lead 210 E909.0
01/26/11 17:27 / eli-cspCi/Filter18Lead 210 precision (±)E909.0
01/26/11 17:27 / eli-cspCi/Filter9.1Lead 210 MDC E909.0
01/19/11 22:28 / trspCi/Filter35.1Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter1.6Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:03 / dmfpCi/Filter53Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter12Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter7.6Thorium 230 MDC E908.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 8 of 22
HIGH VOLUME AIR SAMPLING REPORT
CLIENT: Denison Mines USA Corp
REPORT DATE: February 9, 2011
PROJECT: 4th Quarter BHV Air
SAMPLE ID:BHV-5
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10040255-004 natU 4.78E-15 N/A N/A 1E-16 9E-14 5.31E+00
First Quarter 2010 230Th 3.73E-16 4E-17 6E-18 1E-16 3E-14 1.24E+00
Air Volume in mLs 226Ra 4.19E-16 1E-17 2E-18 1E-16 9E-13 4.66E-02
1.36E+11 210Pb 1.30E-14 1E-16 5E-17 2E-15 6E-13 2.17E+00
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10070338-004 natU 4.35E-15 N/A N/A 1E-16 9E-14 4.83E+00
Second Quarter 2010 230Th 7.84E-16 7E-17 7E-18 1E-16 3E-14 2.61E+00
Air Volume in mLs 226Ra 1.05E-15 4E-17 6E-18 1E-16 9E-13 1.16E-01
1.36E+11 210Pb 4.40E-15 7E-17 6E-17 2E-15 6E-13 7.33E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10100417-004 natU 3.57E-15 N/A N/A 1E-16 9E-14 3.97E+00
Third Quarter 2010 230Th 1.14E-15 2E-16 2E-17 1E-16 3E-14 3.81E+00
Air Volume in mLs 226Ra 7.97E-16 3E-17 5E-18 1E-16 9E-13 8.86E-02
1.03E+11 210Pb 3.78E-15 7E-17 6E-17 2E-15 6E-13 6.30E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C11010188-004 natU 8.52E-15 N/A N/A 1E-16 9E-14 9.47E+00
Fourth Quarter 2010 230Th 1.45E-15 2E-16 3E-17 1E-16 3E-14 4.84E+00
Air Volume in mLs 226Ra 1.29E-15 2E-17 3E-18 1E-16 9E-13 1.44E-01
1.32E+11 210Pb 1.33E-14 1E-16 7E-17 2E-15 6E-13 2.22E+00

+LLD's are from Reg. Guide 4.14
*Effluent Concentration from the NEW 10 CFR Part 20 - Appendix B - Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
Page 9 of 22
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:4th Quarter BHV Air
Lab ID:C11010188-004
Client Sample ID:BHV-5
Collection Date:01/04/11
Matrix:Filter
Report Date:02/08/11
DateReceived:01/06/11
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
Prepared by Casper, WY Branch
TRACE METALS
01/19/11 19:22 / sml0.0003mg/filter1.67Uranium SW6020
01/19/11 19:22 / sml0.2pCi/Filter1130Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 19:39 / eli-cspCi/Filter1760Lead 210 E909.0
01/26/11 19:39 / eli-cspCi/Filter19Lead 210 precision (±)E909.0
01/26/11 19:39 / eli-cspCi/Filter9.2Lead 210 MDC E909.0
01/19/11 22:28 / trspCi/Filter171Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter3.3Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:03 / dmfpCi/Filter192Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter22Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter3.8Thorium 230 MDC E908.0
TRACE METALS
01/19/11 19:22 / sml0.0003mg/filter1.67Uranium SW6020
01/19/11 19:22 / sml0.2pCi/Filter1130Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 19:39 / eli-cspCi/Filter1760Lead 210 E909.0
01/26/11 19:39 / eli-cspCi/Filter19Lead 210 precision (±)E909.0
01/26/11 19:39 / eli-cspCi/Filter9.2Lead 210 MDC E909.0
01/19/11 22:28 / trspCi/Filter171Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter3.3Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:03 / dmfpCi/Filter192Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter22Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter3.8Thorium 230 MDC E908.0
TRACE METALS
01/19/11 19:22 / sml0.0003mg/filter1.67Uranium SW6020
01/19/11 19:22 / sml0.2pCi/Filter1130Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 19:39 / eli-cspCi/Filter1760Lead 210 E909.0
01/26/11 19:39 / eli-cspCi/Filter19Lead 210 precision (±)E909.0
01/26/11 19:39 / eli-cspCi/Filter9.2Lead 210 MDC E909.0
01/19/11 22:28 / trspCi/Filter171Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter3.3Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:03 / dmfpCi/Filter192Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter22Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter3.8Thorium 230 MDC E908.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 10 of 22
HIGH VOLUME AIR SAMPLING REPORT
CLIENT: Denison Mines USA Corp
REPORT DATE: February 9, 2011
PROJECT: 4th Quarter BHV Air
SAMPLE ID:BHV-6
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10040255-005 natU 9.63E-15 N/A N/A 1E-16 9E-14 1.07E+01
First Quarter 2010 230Th 1.82E-16 2E-17 4E-18 1E-16 3E-14 6.07E-01
Air Volume in mLs 226Ra 2.06E-16 7E-18 2E-18 1E-16 9E-13 2.29E-02
1.36E+11 210Pb 1.37E-14 1E-16 5E-17 2E-15 6E-13 2.29E+00
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10070338-005 natU 3.62E-15 N/A N/A 1E-16 9E-14 4.02E+00
Second Quarter 2010 230Th 3.94E-16 4E-17 5E-18 1E-16 3E-14 1.31E+00
Air Volume in mLs 226Ra 4.89E-16 2E-17 5E-18 1E-16 9E-13 5.43E-02
1.35E+11 210Pb 4.30E-15 7E-17 6E-17 2E-15 6E-13 7.17E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10100417-005 natU 5.42E-15 N/A N/A 1E-16 9E-14 6.02E+00
Third Quarter 2010 230Th 1.08E-15 2E-16 2E-17 1E-16 3E-14 3.61E+00
Air Volume in mLs 226Ra 5.68E-16 3E-17 6E-18 1E-16 9E-13 6.31E-02
1.03E+11 210Pb 3.98E-15 8E-17 6E-17 2E-15 6E-13 6.63E-01
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C11010188-005 natU 1.24E-14 N/A N/A 1E-16 9E-14 1.38E+01
Fourth Quarter 2010 230Th 1.21E-15 1E-16 3E-17 1E-16 3E-14 4.02E+00
Air Volume in mLs 226Ra 1.00E-15 2E-17 3E-18 1E-16 9E-13 1.12E-01
1.14E+11 210Pb 1.53E-14 2E-16 8E-17 2E-15 6E-13 2.54E+00

+LLD's are from Reg. Guide 4.14
*Effluent Concentration from the NEW 10 CFR Part 20 - Appendix B - Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
Page 11 of 22
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:4th Quarter BHV Air
Lab ID:C11010188-005
Client Sample ID:BHV-6
Collection Date:01/04/11
Matrix:Filter
Report Date:02/08/11
DateReceived:01/06/11
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
Prepared by Casper, WY Branch
TRACE METALS
01/19/11 19:26 / sml0.0003mg/filter2.09Uranium SW6020
01/19/11 19:26 / sml0.2pCi/Filter1420Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 21:50 / eli-cspCi/Filter1740Lead 210 E909.0
01/26/11 21:50 / eli-cspCi/Filter19Lead 210 precision (±)E909.0
01/26/11 21:50 / eli-cspCi/Filter9.1Lead 210 MDC E909.0
01/19/11 22:28 / trspCi/Filter115Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter2.7Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:24 / dmfpCi/Filter138Thorium 230 E908.0
01/24/11 10:24 / dmfpCi/Filter16Thorium 230 precision (±)E908.0
01/24/11 10:24 / dmfpCi/Filter2.9Thorium 230 MDC E908.0
TRACE METALS
01/19/11 19:26 / sml0.0003mg/filter2.09Uranium SW6020
01/19/11 19:26 / sml0.2pCi/Filter1420Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 21:50 / eli-cspCi/Filter1740Lead 210 E909.0
01/26/11 21:50 / eli-cspCi/Filter19Lead 210 precision (±)E909.0
01/26/11 21:50 / eli-cspCi/Filter9.1Lead 210 MDC E909.0
01/19/11 22:28 / trspCi/Filter115Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter2.7Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:24 / dmfpCi/Filter138Thorium 230 E908.0
01/24/11 10:24 / dmfpCi/Filter16Thorium 230 precision (±)E908.0
01/24/11 10:24 / dmfpCi/Filter2.9Thorium 230 MDC E908.0
TRACE METALS
01/19/11 19:26 / sml0.0003mg/filter2.09Uranium SW6020
01/19/11 19:26 / sml0.2pCi/Filter1420Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
01/26/11 21:50 / eli-cspCi/Filter1740Lead 210 E909.0
01/26/11 21:50 / eli-cspCi/Filter19Lead 210 precision (±)E909.0
01/26/11 21:50 / eli-cspCi/Filter9.1Lead 210 MDC E909.0
01/19/11 22:28 / trspCi/Filter115Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter2.7Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
01/24/11 10:24 / dmfpCi/Filter138Thorium 230 E908.0
01/24/11 10:24 / dmfpCi/Filter16Thorium 230 precision (±)E908.0
01/24/11 10:24 / dmfpCi/Filter2.9Thorium 230 MDC E908.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 12 of 22
HIGH VOLUME AIR SAMPLING REPORT
CLIENT: Denison Mines USA Corp
REPORT DATE: February 9, 2011
PROJECT: 4th Quarter BHV Air
SAMPLE ID:Blank
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10040255-006 natU 1.67E-17 N/A N/A 1E-16 9E-14 1.86E-02
First Quarter 2010 230Th -3.03E-18 4E-18 5E-18 1E-16 3E-14 -1.01E-02
Air Volume in mLs 226Ra 1.48E-18 1E-18 2E-18 1E-16 9E-13 1.64E-04
1.36E+11 210Pb 3.50E-17 3E-17 5E-17 2E-15 6E-13 5.83E-03
Note: This sample uses 136,000,000 L of air volume for comparison purposes.
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10070338-006 natU 2.71E-17 N/A N/A 1E-16 9E-14 3.02E-02
Second Quarter 2010 230Th -2.63E-19 5E-18 6E-18 1E-16 3E-14 -8.75E-04
Air Volume in mLs 226Ra 9.74E-18 4E-18 5E-18 1E-16 9E-13 1.08E-03
1.36E+11 210Pb 7.47E-18 3E-17 6E-17 2E-15 6E-13 1.24E-03
Note: This sample uses 136,000,000 L of air volume for comparison purposes.
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C10100417-006 natU 9.01E-18 N/A N/A 1E-16 9E-14 1.00E-02
Third Quarter 2010 230Th -1.63E-18 7E-18 1E-17 1E-16 3E-14 -5.44E-03
Air Volume in mLs 226Ra 1.27E-18 4E-18 7E-18 1E-16 9E-13 1.41E-04
1.36E+11 210Pb -2.26E-17 3E-17 4E-17 2E-15 6E-13 -3.76E-03
Note: This sample uses 136,000,000 L of air volume for comparison purposes.
Quarter/Date Sampled
Air Volume Radionuclide Concentration
µCi/mL
Counting
Precision
µCi/mL
MDC µCi/mL L.L.D.+
µCi/mL
Effluent Conc.*
µCi/mL
% Effluent
Concentration
C11010188-006 natU 9.35E-18 N/A N/A 1E-16 9E-14 1.04E-02
Fourth Quarter 2010 230Th -6.17E-19 2E-18 2E-18 1E-16 3E-14 -2.06E-03
Air Volume in mLs 226Ra -6.85E-19 2E-18 3E-18 1E-16 9E-13 -7.61E-05
1.36E+11 210Pb 5.87E-18 4E-17 7E-17 2E-15 6E-13 9.78E-04
Note: This sample uses 136,000,000 L of air volume for comparison purposes.

+LLD's are from Reg. Guide 4.14
*Effluent Concentration from the NEW 10 CFR Part 20 - Appendix B - Table 2
Year for Natural Uranium
Year for Thorium-230
Week for Radium-226
Day for Lead-210
Page 13 of 22
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:4th Quarter BHV Air
Lab ID:C11010188-006
Client Sample ID:Blank
Collection Date:01/04/11
Matrix:Filter
Report Date:02/08/11
DateReceived:01/06/11
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
Prepared by Casper, WY Branch
TRACE METALS
01/19/11 19:30 / sml0.0003mg/filter0.0019Uranium SW6020
01/19/11 19:30 / sml0.2pCi/Filter1.3Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
U 01/27/11 00:02 / eli-cspCi/Filter0.80Lead 210 E909.0
01/27/11 00:02 / eli-cspCi/Filter5.5Lead 210 precision (±)E909.0
01/27/11 00:02 / eli-cspCi/Filter9.2Lead 210 MDC E909.0
U 01/19/11 22:28 / trspCi/Filter-0.09Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter0.2Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
U 01/24/11 10:03 / dmfpCi/Filter-0.08Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter0.25Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter0.32Thorium 230 MDC E908.0
TRACE METALS
01/19/11 19:30 / sml0.0003mg/filter0.0019Uranium SW6020
01/19/11 19:30 / sml0.2pCi/Filter1.3Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
U 01/27/11 00:02 / eli-cspCi/Filter0.80Lead 210 E909.0
01/27/11 00:02 / eli-cspCi/Filter5.5Lead 210 precision (±)E909.0
01/27/11 00:02 / eli-cspCi/Filter9.2Lead 210 MDC E909.0
U 01/19/11 22:28 / trspCi/Filter-0.09Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter0.2Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
U 01/24/11 10:03 / dmfpCi/Filter-0.08Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter0.25Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter0.32Thorium 230 MDC E908.0
TRACE METALS
01/19/11 19:30 / sml0.0003mg/filter0.0019Uranium SW6020
01/19/11 19:30 / sml0.2pCi/Filter1.3Uranium, Activity SW6020
RADIONUCLIDES - TOTAL
U 01/27/11 00:02 / eli-cspCi/Filter0.80Lead 210 E909.0
01/27/11 00:02 / eli-cspCi/Filter5.5Lead 210 precision (±)E909.0
01/27/11 00:02 / eli-cspCi/Filter9.2Lead 210 MDC E909.0
U 01/19/11 22:28 / trspCi/Filter-0.09Radium 226 E903.0
01/19/11 22:28 / trspCi/Filter0.2Radium 226 precision (±)E903.0
01/19/11 22:28 / trspCi/Filter0.4Radium 226 MDC E903.0
U 01/24/11 10:03 / dmfpCi/Filter-0.08Thorium 230 E908.0
01/24/11 10:03 / dmfpCi/Filter0.25Thorium 230 precision (±)E908.0
01/24/11 10:03 / dmfpCi/Filter0.32Thorium 230 MDC E908.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 14 of 22
Project:4th Quarter BHV Air
Client:Denison Mines USA Corp
Work Order:C11010188
QA/QC Summary Report
02/08/11Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Prepared by Casper, WY Branch
Method: E903.0 Batch: R142010
Sample ID: C11010238-001AMS 01/19/11 14:28Sample Matrix Spike Run: BERTHOLD 770-1_110113B
Radium 226 111 70 13044.5 pCi/Filter
Sample ID: C11010238-001AMSD 01/19/11 18:30Sample Matrix Spike Duplicate Run: BERTHOLD 770-1_110113B
Radium 226 107 70 130 20.83.542.9 pCi/Filter
Sample ID: LCS-28735 01/19/11 18:30Laboratory Control Sample Run: BERTHOLD 770-1_110113B
Radium 226 112 70 13013.3 pCi/Filter
Sample ID: MB-28735 01/19/11 18:30Method Blank Run: BERTHOLD 770-1_110113B3
Radium 226 -0.2 pCi/Filter U
Radium 226 precision (±) 0.09 pCi/Filter
Radium 226 MDC 0.2 pCi/Filter
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 15 of 22
Project:4th Quarter BHV Air
Client:Denison Mines USA Corp
Work Order:C11010188
QA/QC Summary Report
02/08/11Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Prepared by Casper, WY Branch
Method: E908.0 Batch: 28739
Sample ID: C11010188-001AMS 01/24/11 10:03Sample Matrix Spike Run: EGG-ORTEC_110120A
Thorium 230 111 70 130248 pCi/Filter
Sample ID: C11010188-001AMSD 01/24/11 10:03Sample Matrix Spike Duplicate Run: EGG-ORTEC_110120A
Thorium 230 101 70 130 30.28.4228 pCi/Filter
Sample ID: LCS-28739 01/24/11 10:03Laboratory Control Sample Run: EGG-ORTEC_110120A
Thorium 230 120 70 13011.5 pCi/Filter
Sample ID: MB-28739 01/24/11 10:03Method Blank Run: EGG-ORTEC_110120A3
Thorium 230 -0.2 pCi/Filter U
Thorium 230 precision (±) 0.08 pCi/Filter
Thorium 230 MDC 0.1 pCi/Filter
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 16 of 22
Project:4th Quarter BHV Air
Client:Denison Mines USA Corp
Work Order:C11010188
QA/QC Summary Report
02/08/11Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Prepared by Casper, WY Branch
Method: E909.0 Batch: T_13081
Sample ID: C11010188-001AMSD 01/26/11 13:05Sample Matrix Spike Duplicate Run: SUB-T38663
Lead 210 106 70 130 133.72930 pCi/Filter
Sample ID: C11010188-001AMS 01/26/11 10:53Sample Matrix Spike Run: SUB-T38663
Lead 210 117 70 1303040 pCi/Filter
Sample ID: LCS-13081 01/26/11 06:30Laboratory Control Sample Run: SUB-T38663
Lead 210 96 70 130349 pCi/Filter
Sample ID: MB-13081 01/26/11 02:07Method Blank Run: SUB-T386633
Lead 210 5 pCi/Filter U
Lead 210 precision (±) 6 pCi/Filter
Lead 210 MDC 9 pCi/Filter
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 17 of 22
Project:4th Quarter BHV Air
Client:Denison Mines USA Corp
Work Order:C11010188
QA/QC Summary Report
02/08/11Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Prepared by Casper, WY Branch
Method: SW6020 Batch: 28739
Sample ID: MB-28739 01/19/11 18:41Method Blank Run: ICPMS2-C_110119A
Uranium 6E-056E-05 mg/filter
Sample ID: LCS2-28739 01/19/11 18:45Laboratory Control Sample Run: ICPMS2-C_110119A
Uranium 100 85 1150.000300.0998 mg/filter
Sample ID: C11010188-006AMS 01/19/11 19:34Sample Matrix Spike Run: ICPMS2-C_110119A
Uranium 112 75 1250.000300.0577 mg/filter
Sample ID: C11010188-006AMSD 01/19/11 19:38Sample Matrix Spike Duplicate Run: ICPMS2-C_110119A
Uranium 111 75 125 200.00030 0.70.0572 mg/filter
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 18 of 22
Shipping container/cooler in good condition?
Custody seals intact on shipping container/cooler?
Custody seals intact on sample bottles?
Chain of custody present?
Chain of custody signed when relinquished and received?
Chain of custody agrees with sample labels?
Samples in proper container/bottle?
Sample containers intact?
Sufficient sample volume for indicated test?
All samples received within holding time?
Container/Temp Blank temperature:
Water - VOA vials have zero headspace?
Water - pH acceptable upon receipt?
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
Not Present
Not Present
Not Present
No VOA vials submitted
Not Applicable
°C
Denison Mines USA Corp
@C11010188@
1/6/2011Halley Ackerman
Next Day Air
ha
C11010188
Date Received:
Received by:
Login completed by:
Carrier name:
BL2000\tedwards
1/8/2011
Reviewed by:
Reviewed Date:
Contact and Corrective Action Comments:
None
Workorder Receipt Checklist
Page 19 of 22
Page 20 of 22
Page 21 of 22
Page 22 of 22
Date BHV-1 BHV-2 BHV-4 BHV-5 BHV-6
Loading (mg/m3)Loading (mg/m3)Loading (mg/m3)Loading (mg/m3)Loading (mg/m3)
1/5/2009 0.0065 0.0062 0.0057 0.0096 0.0073
1/12/2009 0.0093 0.0092 0.0007 0.0141 0.0091
1/19/2009 0.0155 0.0165 0.0002 0.0195 0.0137
1/26/2009 -0.0070 0.0090 0.0060 0.0133 0.0062
2/2/2009 0.0109 0.0060 0.0092 0.0153 0.0108
2/9/2009 0.0059 0.0089 0.0048 0.0085 0.0070
2/16/2009 0.0115 0.0184 0.0099 0.0149 0.0125
2/23/2009 0.0124 0.0180 0.0102 0.0170 0.0124
3/2/2009 0.0250 0.0324 0.0203 0.0202 0.0175
3/9/2009 0.0196 0.0319 0.0210 0.0176 0.0264
3/16/2009 0.0481 0.0644 0.0467 0.0438 0.0415
3/24/2009 0.0187 0.0176 0.0205 0.0290 0.0162
3/30/2009 0.0364 0.0330 0.0265 0.0450 0.0275
4/6/2009 0.0206 0.0248 0.0201 0.0221 0.0012
4/13/2009 0.0807 0.0652 0.0881 0.1035 0.0030
4/20/2009 0.0381 0.0388 0.0314 0.0446 0.0023
4/27/2009 0.0247 0.0319 0.0401 0.0242 0.0140
5/4/2009 0.0144 0.0375 0.0221 0.0357 0.0384
5/11/2009 0.0217 0.0522 0.0273 0.0643 0.0349
5/18/2009 0.0335 0.0409 0.0386 0.0487 0.0344
5/25/2009 0.0188 0.0214 0.0266 0.0256
6/1/2009 0.0233 0.0265 0.0239 0.0287 0.0257
6/8/2009 0.0207 0.0280 0.0193 0.0229 0.0200
6/15/2009 0.0199 0.0343 0.0143 0.0201 0.0185
6/22/2009 0.0149 0.0226 0.0134 0.0161 0.0140
6/29/2009 0.0173 0.0299 0.0157 0.0177 0.0193
7/6/2009 0.0211 0.0367 0.0216 0.0204 0.0198
7/13/2009 0.0225 0.0446 0.0232 0.0286 0.0220
7/20/2009 0.0174 0.0340 0.0214 0.0211 0.0155
7/27/2009 0.0247 0.0411 0.2124 0.0307 0.0239
8/3/2009 0.0221 0.0546 0.0251 0.0279 0.0256
8/10/2009 0.0195 0.0426 0.0231 0.0240 0.0210
8/17/2009 0.0215 0.0573 0.0254 0.0250 0.0222
8/24/2009 0.0173 0.0613 0.0160 0.0212 0.0186
8/31/2009 0.0231 0.0501 0.0339 0.0258 0.0245
9/7/2009 0.0240 0.0412 0.0317 0.0258 0.0235
9/14/2009 0.0111 0.0176 0.0165 0.0258 0.0122
9/21/2009 0.0111 0.0261 0.0171 0.0258 0.0133
9/28/2009 0.0442 0.0455 0.0418 0.0258 0.0402
10/5/2009 0.0189 0.0306 0.0176 0.0258 0.0146
10/12/2009 0.0146 0.0269 0.0160 0.0258 0.0128
10/19/2009 0.0058 0.0180 0.0156 0.0258 0.0104
10/26/2009 0.0083 0.0129 0.0105 0.0258 0.0085
11/2/2009 0.0151 0.0367 0.0154 0.0258 0.0154
11/9/2009 0.0132 0.0342 0.0159 0.0258 0.0127
11/16/2009 0.0125 0.0243 0.0172 0.0258 0.0147
11/23/2009 0.0087 0.0276 0.0159 0.0258 0.0099
11/30/2009 0.0115 0.0258 0.0285 0.0258 0.0142
12/7/2009 0.0107 0.0164 0.0105 0.0258 0.0169
12/14/2009 0.0114 0.0114 0.0121 0.0258 0.0106
12/21/2009 0.0074 0.0085 0.0146 0.0258 0.0103
12/28/2009 0.0095 0.0108 0.0081 0.0258 0.0121
1/11/2010 0.0188 0.0152 0.0221 0.0258 0.0171
1/18/2010 0.0145 0.0139 0.0255 0.0258 0.0179
1/25/2010 0.0031 0.0026 0.0032 0.0258 0.0037
2/1/2010 0.0066 0.0000 0.0094 0.0258 0.0079
2/8/2010 0.0078 0.0060 0.0079 0.0258 0.0108
2/15/2010 0.0063 0.0074 0.0119 0.0258 0.0088
2/23/2010 0.0099 0.0104 0.0188 0.0258 0.0097
3/1/2010 0.0085 0.0086 0.0114 0.0258 0.0099
3/8/2010 0.0096 0.0191 0.0116 0.0258 0.0097
3/15/2010 0.0058 0.0086 0.0084 0.0258 0.0063
3/23/2010 0.0100 0.0117 0.0153 0.0258 0.0108
3/29/2010 0.0120 0.0180 0.0161 0.0258 0.0141
4/5/2010 0.0357 0.0393 0.0355 0.0258 0.0373
4/12/2010 0.0257 0.0376 0.0221 0.0258 0.0307
4/19/2010 0.0361 0.0514 0.0285 0.0258 0.0328
4/26/2010 0.0235 0.0299 0.0336 0.0258 0.0254
5/5/2010 0.0330 0.0335 0.0439 0.0258 0.0340
5/10/2010 0.0395 0.0552 0.0549 0.0258 0.0401
5/17/2010 0.0227 0.0240 0.0242 0.0258 0.0233
5/24/2010 0.0873 0.0937 0.1103 0.0258 0.0892
5/31/2010 0.0311 0.0566 0.0382 0.0258 0.0326
6/7/2010 0.0165 0.0258 0.0162 0.0258 0.0188
6/14/2010 0.0236 0.0441 0.0247 0.0258 0.0252
6/21/2010 0.0253 0.0451 0.0319 0.0258 0.0297
6/28/2010 0.0232 0.0409 0.0189 0.0258 0.0281
7/5/2010 0.0175 0.0343 0.0097 0.0258 0.0174
Badge
Number Location Date Issued Date Returned
Total Days
Badge at
WMM
Mean
Ambient
Dose
Equivalent
mRem /
hour
mRem /
Day
mRem /
Week
Control Administration Vault 9/30/2010 1/7/2011 99 37 0.02 0.374 2.62
1 V2O5 Control Room 9/30/2010 1/7/2011 99 58.4 0.02 0.590 4.13
2 BHV-6 9/30/2010 1/7/2011 99 31.7 0.01 0.320 2.24
3 Ore Stor. - Molycorp Area 9/30/2010 1/7/2011 99 924.9 0.39 9.342 65.40
4 Vanadium Precip.Area 9/30/2010 1/7/2011 99 109.2 0.05 1.103 7.72
5 Yellocake Drying Area 9/30/2010 1/7/2011 99 145.3 0.06 1.468 10.27
6 Leach 9/30/2010 1/7/2011 99 308.3 0.13 3.114 21.80
7 SAG Mill Control Room 9/30/2010 1/7/2011 99 398.2 0.17 4.022 28.16
8 Yellowcake Precip.9/30/2010 1/7/2011 99 97.1 0.04 0.981 6.87
9 Central Control Room 9/30/2010 1/7/2011 99 89.8 0.04 0.907 6.35
10 Trommel Screen (ore pad)9/30/2010 1/7/2011 99 277.3 0.12 2.801 19.61
11 Barrel Dumping Station 9/30/2010 1/7/2011 99 167.1 0.07 1.688 11.82
12 Met. Lab 9/30/2010 1/7/2011 99 79.1 0.03 0.799 5.59
13 Filter Press Room 9/30/2010 1/7/2011 99 219.7 0.09 2.219 15.53
14 BHV-1 9/30/2010 1/7/2011 99 35.5 0.01 0.359 2.51
15 BHV-2 9/30/2010 1/7/2011 99 36.7 0.02 0.371 2.59
16 BHV-3 9/30/2010 1/7/2011 99 31.1 0.01 0.314 2.20
17 BHV-4 9/30/2010 1/7/2011 99 34.7 0.01 0.351 2.45
18 BHV-5 9/30/2010 1/7/2011 99 37 0.02 0.374 2.62
19 SAG Mill 9/30/2010 1/7/2011 99 528.9 0.22 5.342 37.40
20 Tails 9/30/2010 1/7/2011 99 124 0.05 1.253 8.77
21 CCD 9/30/2010 1/7/2011 99 87.7 0.04 0.886 6.20
22 North SX 9/30/2010 1/7/2011 99 91.2 0.04 0.921 6.45
23 Administration Building 9/30/2010 1/7/2011 99 41.9 0.02 0.423 2.96
24 Admin Parking Lot 9/30/2010 1/7/2011 99 91.8 0.04 0.927 6.49
25 Yellowcake Packaging 9/30/2010 1/7/2011 99 893.4 0.38 9.024 63.17
26 Yellowcake Storage 9/30/2010 1/7/2011 99 423.6 0.18 4.279 29.95
27 Bucking Room 9/30/2010 1/7/2011 99 122.1 0.05 1.233 8.63
28 Mill Lunch Room 9/30/2010 1/7/2011 99 59.7 0.03 0.603 4.22
29 South SX 9/30/2010 1/7/2011 99 170.7 0.07 1.724 12.07
30 Mtce. Super.'s Office 9/30/2010 1/7/2011 99 52.5 0.02 0.530 3.71
31 Ore Feed Grizzly 9/30/2010 1/7/2011 99 412.9 0.17 4.171 29.19
32 Scalehouse 9/30/2010 1/7/2011 99 201.1 0.08 2.031 14.22
33 Sample Plant (OBS)9/30/2010 1/7/2011 99 257.7 0.11 2.603 18.22
34 Front Gate 9/30/2010 1/7/2011 99 210.1 0.09 2.122 14.86
45 AF - Barrel Dump Station 9/30/2010 1/7/2011 99 143.1 0.06 1.445 10.12
46 AF - South Side*9/30/2010 1/7/2011 99 0.00 0.000 0.00
47 AF - North Side*9/30/2010 1/7/2011 99 0.00 0.000 0.00
White Mesa Mill Fourth Quarter 2010 Environmental Spherical Gamma Monitor Results
* Lost Badge
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
45.00
50.00
mR
e
m
/
q
u
a
r
t
e
r

Background (BHV-3) subtracted from BHV-1, BHV-2, BHV-4, BHV-5, and BHV--6
White Mesa Mill Ambient Gamma Levels Over Time
BHV-1 BHV-2 BHV-3 BHV-4 BHV-5 BHV-6

ANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORT
This report was prepared by Energy Laboratories, Inc., 2393 Salt Creek Hwy., Casper, WY 82601. Any exceptions
or problems with the analyses are noted in the Laboratory Analytical Report, the QA/QC Summary Report, or the
Case Narrative.
The results as reported relate only to the item(s) submitted for testing.
If you have any questions regarding these test results, please call.
Sample ID Client Sample ID Collect Date Receive Date Matrix Test
Report Approved By:
C10120777-001 North East 12/20/10 14:40 12/22/10 Vegetation Digestion, Radiochemistry
Lead 210
Radium 226
C10120777-002 North West 12/20/10 13:10 12/22/10 Vegetation Same As Above
C10120777-003 South West 12/20/10 10:30 12/22/10 Vegetation Same As Above
Denison Mines USA Corp
Project Name: Late Fall Vegetation
Workorder No.: C10120777
6425 S Hwy 191
Blanding, UT 84511
February 09, 2011
Energy Laboratories, Inc. Casper WY received the following 3 samples for Denison Mines USA Corp on 12/22/2010 for
analysis.
Page 1 of 9
Project:Late Fall Vegetation
CLIENT:Denison Mines USA Corp
Sample Delivery Group:C10120777 CASE NARRATIVE
02/09/11Report Date:
ORIGINAL SAMPLE SUBMITTAL(S)
All original sample submittals have been returned with the data package.
SAMPLE TEMPERATURE COMPLIANCE: 4°C (±2°C)
Temperature of samples received may not be considered properly preserved by accepted standards. Samples that are hand
delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters. Data provided by
this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days). The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay. Maximum recommended delay between end of exposure to
beginning of counting should not exceed 8 days.
SOIL/SOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE, SIMAZINE AND PCB ANALYSIS
Data for PCBs, Atrazine and Simazine are reported from EPA 525.2. PCB data reported by ELI reflects the results for seven
individual Aroclors. When the results for all seven are ND (not detected), the sample meets EPA compliance criteria for
PCB monitoring.
SUBCONTRACTING ANALYSIS
Subcontracting of sample analyses to an outside laboratory may be required. If so, ENERGY LABORATORIES will utilize its
branch laboratories or qualified contract laboratories for this service. Any such laboratories will be indicated within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
eli-b - Energy Laboratories, Inc. - Billings, MT
eli-g - Energy Laboratories, Inc. - Gillette, WY
eli-h - Energy Laboratories, Inc. - Helena, MT
eli-r - Energy Laboratories, Inc. - Rapid City, SD
eli-t - Energy Laboratories, Inc. - College Station, TX
CERTIFICATIONS:
USEPA: WY00002, Radiochemical WY00937; FL-DOH NELAC: E87641, Radiochemical E871017; California: 02118CA;
Oregon: WY200001; Utah: 3072350515; Virginia: 00057; Washington: C1903
ISO 17025 DISCLAIMER:
The results of this Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES, INC. - CASPER,WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities. Some results requested by the client may not be covered
under these certifications. All analysis data to be submitted for regulatory enforcement should be certified in the sample
state of origin. Please verify ELI's certification coverage by visiting www.energylab.com
ELI appreciates the opportunity to provide you with this analytical service. For additional information and services visit our
web page www.energylab.com.
Tests associated with analyst identified as ELI-CS were subcontracted to Energy Laboratories, 415 Graham Rd., College
Station, TX, EPA Number TX01520.
Page 2 of 9
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:Late Fall Vegetation
Lab ID:C10120777-001
Client Sample ID:North East
Collection Date:12/20/10 14:40
Matrix:Vegetation
Report Date:02/09/11
DateReceived:12/22/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
Prepared by Casper, WY Branch
RADIONUCLIDES - TOTAL
01/27/11 21:56 / eli-csuCi/kg1.0E-05Lead 210 E909.0
01/27/11 21:56 / eli-csuCi/kg1.5E-06Lead 210 precision (±)E909.0
01/27/11 21:56 / eli-csuCi/kg2.3E-06Lead 210 MDC E909.0
01/27/11 21:56 / eli-cspCi/kg10.2Lead 210 altu E909.0
01/27/11 21:56 / eli-cspCi/kg1.5Lead 210 precision (±) altu E909.0
01/27/11 21:56 / eli-cspCi/kg2.3Lead 210 MDC altu E909.0
01/19/11 10:41 / trsuCi/kg2.3E-05Radium 226 E903.0
01/19/11 10:41 / trsuCi/kg1.7E-06Radium 226 precision (±)E903.0
01/19/11 10:41 / trsuCi/kg5.2E-07Radium 226 MDC E903.0
01/19/11 10:41 / trspCi/kg23.3Radium 226 altu E903.0
01/19/11 10:41 / trspCi/kg1.7Radium 226 altu precision (±)E903.0
01/19/11 10:41 / trspCi/kg0.52Radium 226 altu MDC E903.0
RADIONUCLIDES - TOTAL
01/27/11 21:56 / eli-csuCi/kg1.0E-05Lead 210 E909.0
01/27/11 21:56 / eli-csuCi/kg1.5E-06Lead 210 precision (±)E909.0
01/27/11 21:56 / eli-csuCi/kg2.3E-06Lead 210 MDC E909.0
01/27/11 21:56 / eli-cspCi/kg10.2Lead 210 altu E909.0
01/27/11 21:56 / eli-cspCi/kg1.5Lead 210 precision (±) altu E909.0
01/27/11 21:56 / eli-cspCi/kg2.3Lead 210 MDC altu E909.0
01/19/11 10:41 / trsuCi/kg2.3E-05Radium 226 E903.0
01/19/11 10:41 / trsuCi/kg1.7E-06Radium 226 precision (±)E903.0
01/19/11 10:41 / trsuCi/kg5.2E-07Radium 226 MDC E903.0
01/19/11 10:41 / trspCi/kg23.3Radium 226 altu E903.0
01/19/11 10:41 / trspCi/kg1.7Radium 226 altu precision (±)E903.0
01/19/11 10:41 / trspCi/kg0.52Radium 226 altu MDC E903.0
RADIONUCLIDES - TOTAL
01/27/11 21:56 / eli-csuCi/kg1.0E-05Lead 210 E909.0
01/27/11 21:56 / eli-csuCi/kg1.5E-06Lead 210 precision (±)E909.0
01/27/11 21:56 / eli-csuCi/kg2.3E-06Lead 210 MDC E909.0
01/27/11 21:56 / eli-cspCi/kg10.2Lead 210 altu E909.0
01/27/11 21:56 / eli-cspCi/kg1.5Lead 210 precision (±) altu E909.0
01/27/11 21:56 / eli-cspCi/kg2.3Lead 210 MDC altu E909.0
01/19/11 10:41 / trsuCi/kg2.3E-05Radium 226 E903.0
01/19/11 10:41 / trsuCi/kg1.7E-06Radium 226 precision (±)E903.0
01/19/11 10:41 / trsuCi/kg5.2E-07Radium 226 MDC E903.0
01/19/11 10:41 / trspCi/kg23.3Radium 226 altu E903.0
01/19/11 10:41 / trspCi/kg1.7Radium 226 altu precision (±)E903.0
01/19/11 10:41 / trspCi/kg0.52Radium 226 altu MDC E903.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 3 of 9
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:Late Fall Vegetation
Lab ID:C10120777-002
Client Sample ID:North West
Collection Date:12/20/10 13:10
Matrix:Vegetation
Report Date:02/09/11
DateReceived:12/22/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
Prepared by Casper, WY Branch
RADIONUCLIDES - TOTAL
U 02/04/11 01:21 / eli-csuCi/kg-1.1E-07Lead 210 E909.0
02/04/11 01:21 / eli-csuCi/kg6.8E-07Lead 210 precision (±)E909.0
02/04/11 01:21 / eli-csuCi/kg1.1E-06Lead 210 MDC E909.0
U 02/04/11 01:21 / eli-cspCi/kg-0.11Lead 210 altu E909.0
02/04/11 01:21 / eli-cspCi/kg0.68Lead 210 precision (±) altu E909.0
02/04/11 01:21 / eli-cspCi/kg1.1Lead 210 MDC altu E909.0
01/19/11 10:41 / trsuCi/kg8.6E-06Radium 226 E903.0
01/19/11 10:41 / trsuCi/kg9.1E-07Radium 226 precision (±)E903.0
01/19/11 10:41 / trsuCi/kg3.9E-07Radium 226 MDC E903.0
01/19/11 10:41 / trspCi/kg8.6Radium 226 altu E903.0
01/19/11 10:41 / trspCi/kg0.91Radium 226 altu precision (±)E903.0
01/19/11 10:41 / trspCi/kg0.39Radium 226 altu MDC E903.0
RADIONUCLIDES - TOTAL
U 02/04/11 01:21 / eli-csuCi/kg-1.1E-07Lead 210 E909.0
02/04/11 01:21 / eli-csuCi/kg6.8E-07Lead 210 precision (±)E909.0
02/04/11 01:21 / eli-csuCi/kg1.1E-06Lead 210 MDC E909.0
U 02/04/11 01:21 / eli-cspCi/kg-0.11Lead 210 altu E909.0
02/04/11 01:21 / eli-cspCi/kg0.68Lead 210 precision (±) altu E909.0
02/04/11 01:21 / eli-cspCi/kg1.1Lead 210 MDC altu E909.0
01/19/11 10:41 / trsuCi/kg8.6E-06Radium 226 E903.0
01/19/11 10:41 / trsuCi/kg9.1E-07Radium 226 precision (±)E903.0
01/19/11 10:41 / trsuCi/kg3.9E-07Radium 226 MDC E903.0
01/19/11 10:41 / trspCi/kg8.6Radium 226 altu E903.0
01/19/11 10:41 / trspCi/kg0.91Radium 226 altu precision (±)E903.0
01/19/11 10:41 / trspCi/kg0.39Radium 226 altu MDC E903.0
RADIONUCLIDES - TOTAL
U 02/04/11 01:21 / eli-csuCi/kg-1.1E-07Lead 210 E909.0
02/04/11 01:21 / eli-csuCi/kg6.8E-07Lead 210 precision (±)E909.0
02/04/11 01:21 / eli-csuCi/kg1.1E-06Lead 210 MDC E909.0
U 02/04/11 01:21 / eli-cspCi/kg-0.11Lead 210 altu E909.0
02/04/11 01:21 / eli-cspCi/kg0.68Lead 210 precision (±) altu E909.0
02/04/11 01:21 / eli-cspCi/kg1.1Lead 210 MDC altu E909.0
01/19/11 10:41 / trsuCi/kg8.6E-06Radium 226 E903.0
01/19/11 10:41 / trsuCi/kg9.1E-07Radium 226 precision (±)E903.0
01/19/11 10:41 / trsuCi/kg3.9E-07Radium 226 MDC E903.0
01/19/11 10:41 / trspCi/kg8.6Radium 226 altu E903.0
01/19/11 10:41 / trspCi/kg0.91Radium 226 altu precision (±)E903.0
01/19/11 10:41 / trspCi/kg0.39Radium 226 altu MDC E903.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 4 of 9
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:Late Fall Vegetation
Lab ID:C10120777-003
Client Sample ID:South West
Collection Date:12/20/10 10:30
Matrix:Vegetation
Report Date:02/09/11
DateReceived:12/22/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
Prepared by Casper, WY Branch
RADIONUCLIDES - TOTAL
U 02/04/11 07:54 / eli-csuCi/kg8.0E-07Lead 210 E909.0
02/04/11 07:54 / eli-csuCi/kg7.9E-07Lead 210 precision (±)E909.0
02/04/11 07:54 / eli-csuCi/kg1.3E-06Lead 210 MDC E909.0
U 02/04/11 07:54 / eli-cspCi/kg0.80Lead 210 altu E909.0
02/04/11 07:54 / eli-cspCi/kg0.79Lead 210 precision (±) altu E909.0
02/04/11 07:54 / eli-cspCi/kg1.3Lead 210 MDC altu E909.0
01/19/11 10:41 / trsuCi/kg6.7E-06Radium 226 E903.0
01/19/11 10:41 / trsuCi/kg9.1E-07Radium 226 precision (±)E903.0
01/19/11 10:41 / trsuCi/kg4.8E-07Radium 226 MDC E903.0
01/19/11 10:41 / trspCi/kg6.7Radium 226 altu E903.0
01/19/11 10:41 / trspCi/kg0.91Radium 226 altu precision (±)E903.0
01/19/11 10:41 / trspCi/kg0.48Radium 226 altu MDC E903.0
RADIONUCLIDES - TOTAL
U 02/04/11 07:54 / eli-csuCi/kg8.0E-07Lead 210 E909.0
02/04/11 07:54 / eli-csuCi/kg7.9E-07Lead 210 precision (±)E909.0
02/04/11 07:54 / eli-csuCi/kg1.3E-06Lead 210 MDC E909.0
U 02/04/11 07:54 / eli-cspCi/kg0.80Lead 210 altu E909.0
02/04/11 07:54 / eli-cspCi/kg0.79Lead 210 precision (±) altu E909.0
02/04/11 07:54 / eli-cspCi/kg1.3Lead 210 MDC altu E909.0
01/19/11 10:41 / trsuCi/kg6.7E-06Radium 226 E903.0
01/19/11 10:41 / trsuCi/kg9.1E-07Radium 226 precision (±)E903.0
01/19/11 10:41 / trsuCi/kg4.8E-07Radium 226 MDC E903.0
01/19/11 10:41 / trspCi/kg6.7Radium 226 altu E903.0
01/19/11 10:41 / trspCi/kg0.91Radium 226 altu precision (±)E903.0
01/19/11 10:41 / trspCi/kg0.48Radium 226 altu MDC E903.0
RADIONUCLIDES - TOTAL
U 02/04/11 07:54 / eli-csuCi/kg8.0E-07Lead 210 E909.0
02/04/11 07:54 / eli-csuCi/kg7.9E-07Lead 210 precision (±)E909.0
02/04/11 07:54 / eli-csuCi/kg1.3E-06Lead 210 MDC E909.0
U 02/04/11 07:54 / eli-cspCi/kg0.80Lead 210 altu E909.0
02/04/11 07:54 / eli-cspCi/kg0.79Lead 210 precision (±) altu E909.0
02/04/11 07:54 / eli-cspCi/kg1.3Lead 210 MDC altu E909.0
01/19/11 10:41 / trsuCi/kg6.7E-06Radium 226 E903.0
01/19/11 10:41 / trsuCi/kg9.1E-07Radium 226 precision (±)E903.0
01/19/11 10:41 / trsuCi/kg4.8E-07Radium 226 MDC E903.0
01/19/11 10:41 / trspCi/kg6.7Radium 226 altu E903.0
01/19/11 10:41 / trspCi/kg0.91Radium 226 altu precision (±)E903.0
01/19/11 10:41 / trspCi/kg0.48Radium 226 altu MDC E903.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 5 of 9
Project:Late Fall Vegetation
Client:Denison Mines USA Corp
Work Order:C10120777
QA/QC Summary Report
02/09/11Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Prepared by Casper, WY Branch
Method: E903.0 Batch: 28757
Sample ID: C10120777-001ADUP 01/19/11 10:41Sample Duplicate Run: BERTHOLD 770-1_110113A3
Radium 226 24.9181.9E-05 uCi/kg
Radium 226 precision (±) 1.5E-06 uCi/kg
Radium 226 MDC 4.7E-07 uCi/kg
Sample ID: C10120777-003AMS 01/19/11 10:41Sample Matrix Spike Run: BERTHOLD 770-1_110113A
Radium 226 111 70 1302.4E-05 uCi/kg
Sample ID: LCS-28757 01/19/11 10:41Laboratory Control Sample Run: BERTHOLD 770-1_110113A
Radium 226 124 70 1301.5E-05 uCi/kg
Sample ID: MB-28757 01/19/11 10:41Method Blank Run: BERTHOLD 770-1_110113A3
Radium 226 3E-07 uCi/kg U
Radium 226 precision (±) 2E-07 uCi/kg
Radium 226 MDC 4E-07 uCi/kg
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 6 of 9
Project:Late Fall Vegetation
Client:Denison Mines USA Corp
Work Order:C10120777
QA/QC Summary Report
02/09/11Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Prepared by Casper, WY Branch
Method: E909.0 Batch: T_13117
Sample ID: C10120777-001A 01/28/11 02:19Sample Matrix Spike Duplicate Run: SUB-T38688
Lead 210 86 70 130 15.82.80.00025 uCi/kg
Sample ID: C10120777-001A 01/28/11 00:08Sample Matrix Spike Run: SUB-T38688
Lead 210 92 70 1300.00025 uCi/kg
Sample ID: LCS-13117 / 28757 01/27/11 19:45Laboratory Control Sample Run: SUB-T38688
Lead 210 74 70 1300.00028 uCi/kg
Sample ID: MB-13117 / 28757 01/27/11 17:33Method Blank Run: SUB-T386883
Lead 210 1E-06 uCi/kg U
Lead 210 precision (±) 5E-06 uCi/kg
Lead 210 MDC 9E-06 uCi/kg
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 7 of 9
Page 8 of 9
Page 9 of 9
1.00E-08
1.00E-07
1.00E-06
1.00E-05
1.00E-04
1.00E-03
1.00E-02
1.00E-01
1.00E+00
01
-
J
a
n
-
8
1
01
-
J
a
n
-
8
2
01
-
J
a
n
-
8
3
01
-
J
a
n
-
8
4
01
-
J
a
n
-
8
5
01
-
J
a
n
-
8
6
01
-
J
a
n
-
8
7
01
-
J
a
n
-
8
8
01
-
J
a
n
-
8
9
01
-
J
a
n
-
9
0
01
-
J
a
n
-
9
1
01
-
J
a
n
-
9
2
01
-
J
a
n
-
9
3
01
-
J
a
n
-
9
4
01
-
J
a
n
-
9
5
01
-
J
a
n
-
9
6
01
-
J
a
n
-
9
7
01
-
J
a
n
-
9
8
01
-
J
a
n
-
9
9
01
-
J
a
n
-
0
0
01
-
J
a
n
-
0
1
01
-
J
a
n
-
0
2
01
-
J
a
n
-
0
3
01
-
J
a
n
-
0
4
01
-
J
a
n
-
0
5
01
-
J
a
n
-
0
6
01
-
J
a
n
-
0
7
01
-
J
a
n
-
0
8
01
-
J
a
n
-
0
9
01
-
J
a
n
-
1
0
(L
o
g

S
c
a
l
e
)

WHITE MESA MILL - SOUTHWEST OF MILL Ra-226 and Pb-210 Concentrations in Vegetation (uCi/Kg)
Ra-226 Pb-210

THIRD QUARTER
RADIONUCLIDE EMISSIONS TEST
CONDUCTED AT
DENISON MINES CORPORATION
NORTH YELLOW CAKE SCRUBBER
YELLOW CAKE DRYER BAGHOUSE
BLANDING, UTAH
August 24-25, 2010
by:
TETCO391 East 620 SouthAmerican Fork, UT 84003Phone [phone]Fax [phone] fax
Prepared for:
Denison Mines Corporation
6425 S Hwy 91
Blanding, Utah 84511
Date of Report:
October 23, 2010
iii
TABLE OF CONTENTS
PAGEIntroductionTest Purpose............................................................1Test Location and Type of Process ..........................................1Test Dates .............................................................1Pollutants Tested and Methods Applied ......................................1Test Participants.........................................................2Deviations From EPA Methods .............................................2Quality Assurance .......................................................2
Summary of ResultsEmission Results ........................................................3Process Data............................................................3Description of Collected Samples ...........................................3
Discussion of Errors or Irregularities .........................................3
Percent Isokinetics.......................................................4
Source Operation
Process Control Devices Operation..........................................5
Process Representativeness ................................................5
Sampling and Analysis Procedures
Sampling Port Location...................................................6
Sampling Point Location ..................................................6
Sampling Train Description................................................6
Sampling and Analytical Procedures.........................................7
Quality Assurance .......................................................7
Appendices
A: Complete Results and Sample Calculations
B: Raw Field Data
C: Laboratory Data and Chain of Custody
D: Raw Production Data
E: Calibration Procedures and Results
F: Related Correspondence
iv
LIST OF TABLES
PAGETable I Measured Radionuclide Emissions ..........................................3 II Percent Isokinetics.......................................................4 III Sampling Point Location ..................................................6 IV Complete Results, North Yellow Cake Scrubber ......................Appendix A V Complete Results, Yellow Cake Dryer Baghouse ......................Appendix A
LIST OF FIGURES
Figure
1 Facility Schematic Representation North Yellow Cake Scrubber ..........Appendix D
2 Facility Schematic Representation Yellow Cake Dryer Baghouse .........Appendix D
3 Schematic of Method 5/114 Sampling Train ..........................Appendix E
1
INTRODUCTION
Test Purpose
This test project was conducted to determine the total radionuclide emissions from the NorthYellow Cake Scrubber and the Yellow Cake Dryer Baghouse exhausts in terms of Curies per drystandard cubic foot (Ci/dscf).
These tests were for U-Nat only.
Test Location and Type of Process
Denison Mines (USA) Corporation is located about 5 miles south of Blanding, Utah. Uranium
ore is processed into yellow cake, which is shipped to other facilities for additional processing.
There are two yellow cake dryers with individual scrubbers. Both dryer enclosures discharge
into the Dryer Baghouse. The Packaging enclosure also discharges into the Dryer Baghouse.
The North Yellow Cake (NYC) dryer was the only operating dryer at the time of the test. The
South Yellow Cake Dryer is currently not operational. The Grizzly Baghouse serve as the main
dust control device for the raw ore unloading and conveying to the processing building.
Stack schematics are shown as Figures 1 and 2 in Appendix D.
Test Dates
One test run was completed on the NYC Dryer August 24, 2010 and one run on August 25th.
One run was completed on the Dryer Baghouse August 24, 2010.
Pollutants Tested and Methods Applied
The tests were a determination of radionuclide emissions in accordance with EPA Method 5/114.
Test run filters and front wash residues were sent to Test America located in Richland,
Washington for radionuclide analysis.
2
Test Participants
Test Facility Ryan Palmer
State Agency None
TETCO Doug Olsen Mike McNamaraKawai McNamara
Deviations From EPA Methods
None
Quality Assurance
Testing procedures and sample recovery techniques were according to those outlined in theFederal Register and the Quality Assurance Handbook for Air Pollution Measurement Systems.
3
SUMMARY OF RESULTS
Emission Results
Table I presents the findings of the test in Curies per dry standard cubic foot. Tables IV-VI inAppendix A have more detailed information.
Table I. Measured Radionuclide Emissions
Run #
North Yellow Cake
Scrubber
Yellow Cake Dryer
Baghouse
pCi/dscf pCi/hr pCi/dscf pCi/hr
1 1.974E+02 1.512E +07 3.885E+00 4.835E+06
2 2.551E+02 1.912E+07
AVE 2.263E+02 1.712E+07 3.885E+00 4.835E+06
Process Data
The process was operated according to standard procedures. All pertinent process data was
available for recording by agency personnel. Scrubber water flow, pressure drop readings (p)
were recorded and are found in Appendix D. The Dryer Baghouse pressure drop readings (p)
were recorded and are found on the test run sheets. Production data will be submitted by Denison
Mines.
Description of Collected Samples
The test filters for the North Yellow Cake Scrubber were heavily covered with a white or pinkish
white colored particulate. The front washes were clear in appearance.
The test filters for the Yellow Cake Dryer Baghouse were lightly colored with a tan colored
particulate. The front wash was clear in appearance.
Discussion of Errors or Irregularities
None
4
Percent Isokinetic Sampling
Each of the tests were isokinetic within the ±10% of 100% criterion specified in the FederalRegister. They also meet the Utah State Department of Environmental Quality, Division of AirQuality specification of isokinetic sampling point by point. Isokinetic values for each test run arepresented in Table II.
Table II. Percent Isokinetic Sampling
Run #
North Yellow Cake
Scrubber
Yellow Cake Dryer
Baghouse
1 102 96
2 103
5
SOURCE OPERATION
Process Control Devices Operation
All process control devices were operated normally. Recorded scrubber water flow, pressure and
baghouse p readings were recorded and are found on the test run sheets or in Appendix D.
Process Representativeness
The facility was operated normally. Production data was retained by Denison Mines.
6
SAMPLING AND ANALYSIS PROCEDURES
Sampling Port Location
The inside diameter of the North Yellow Cake Scrubber stack is 18.0 inches. The two, four-inchdiameter sample port are located 6.3 diameters (9.5 feet) downstream from the last disturbanceand 6.3 diameters (9.5 feet) upstream from the next disturbance. Figure 1 in Appendix D is aschematic of the stack.
The inside diameter of the Yellow Cake Dryer Baghouse stack is 16.0 inches. The two, four-inchdiameter sample ports are located 28.38 diameters (454 inches) downstream from the lastdisturbance and 3.56 diameters (57 inches) upstream from the next disturbance. The sample port
locations are depicted in Figure 2 in Appendix D.
Sampling Point Location
Table III shows the distance of each sampling point from the inside wall according to EPA
Method 1. Each point is marked and identified with a wrapping of glass tape and numbered.
These points are determined by measuring the distance from the inside wall.
Table III. Sampling Point Location
Sample Point Distance (inches) from Inside Wall
NYC Scrubber Dryer Baghouse
1 0.58 0.70
2 1.89 2.34
3 3.49 4.74
4 5.81 11.26
5 12.19 13.66
6 14.51 15.30
7 16.11
8 17.42
Sampling Train Description
To determine the actual emission rates for this stack, 40 CFR 60, Appendix A, Methods 1-5/114were followed.
All sampling trains were made of inert materials, (Teflon, stainless steel and glass) to preventinterference of the sampled gas and particulate.
7
The stack analyzers used to conduct Methods 1-5/114 are constructed to meet the specificationsoutlined in the CFR. The temperature sensors are K-type thermocouples. Heater, vacuum andpitot line connections have been designed to be interchangeable with all units used by the tester. A 316 stainless steel probe liner was used for the tests. Figure 4 in Appendix E is a sketch of theMethods 5/114 sampling train.
Sample boxes were prepared for testing by following the prescribed procedures outlined inMethods 5/114.
Sampling and Analytical Procedures
All sampling and analytical test procedures were as specified in 40 CFR 60, Appendix A,Methods 5/114.
Quality Assurance
All equipment set-up, sampling procedures, sample recovery and equipment calibrations werecarried out according to the procedures specified in 40 CFR 60 and the Quality Assurance
Handbook for Air Pollution Measurement Systems.
8
APPENDIX
A: Complete Results and Sample Calculations
B: Raw Field Data
C: Laboratory Data and Chain of Custody
D: Raw Production Data
E: Calibration Procedures and Results
F: Related Correspondence
A
APPENDIX A
Table IV Complete Results, North Yellow Cake Scrubber
Table V Complete Results, Yellow Cake Dryer Baghouse
Nomenclature
Sample Equations
NYC Scrubber
Symbol Description Dimensions Run #1 Run #2
Date 8/24/10 8/25/10
Filter #5601 5607
Begin Time Test Began 8:15 8:09
End Time Test Ended 16:46 16:36
Pbm Meter Barometric Pressure In. Hg. Abs 24.60 24.65
H Orifice Pressure Drop In. H2O 1.454 1.417
Y Meter Calibration Y Factor dimensionless 1.000 1.000
Vm Volume Gas Sampled--Meter Conditions cf 364.311 354.674
Tm Avg Meter Temperature oF 105.2 101.4
P Sq Root Velocity Head Root In. H2O 0.2823 0.2785
Wtwc Weight Water Collected Grams 1022.0 1011.2
Tt Duration of Test Minutes 480 480
Cp Pitot Tube Coefficient Dimensionless 0.84 0.84
Dn Nozzle Diameter Inches 0.3813 0.3813
CO2 Volume % Carbon Dioxide Percent 1.90 3.20
O2 Volume % Oxygen Percent 18.70 15.00
N2 & CO Volume % Nitrogen and Carbon Monoxide Percent 79.40 81.80
Vmstd Volume Gas Sampled (Standard) dscf 281.036 275.981
Vw Volume Water Vapor scf 48.187 47.678
Bws (measured)Fraction H2O in Stack Gas (Measured)Fraction 0.146 0.147
Bws (saturated)Fraction H2O in Stack Gas (Saturated)Fraction 0.142 0.155
Bws Fraction H2O in Stack Gas *Fraction 0.142 0.147
Xd Fraction of Dry Gas Fraction 0.858 0.853
Md Molecular Wt. Dry Gas lb/lbmol 29.05 29.11
Ms Molecular Wt. Stack Gas lb/lbmol 27.49 27.48
%I Percent Isokinetic Percent 102.2 102.6 AVG
Ts Avg Stack Temperature oF 120.3 123.7 122.0
As Stack Cross Sectional Area Sq. Ft.1.767 1.767
PG Stack Static Pressure In. H2O -0.080 -0.080
Pbp Sample Port Barometric Pressure In. Hg. Abs 24.53 24.58
Ps Stack Pressure In. Hg. Abs 24.524 24.574
Qs Stack Gas Volumetric Flow Rate (Std) dscfm 1.28E+03 1.25E+03 1.26E+03
Qa Stack Gas Volumetric Flow Rate (Actual) cfm 1.99E+03 1.97E+03 1.98E+03
Vs Velocity of Stack Gas fpm 1.13E+03 1.12E+03 1.12E+03
Curies Radionuclides per sample pCi 55470.0 70410.0
Crad Concentration of Radionuclides pCi/dscf 197.377 255.126 226.252
ERrad Emission Rate of Radionuclides pCi/hr 1.512E+07 1.912E+07 1.712E+07
*If the measured moisture content is greater than the saturated moisture level (supersaturated),
the saturated moisture value will be used in all calculations (40 CFR 60, Method 4, Section 12.1.7).
TABLE IV
COMPLETE RESULTS
DENISON MINES CORPORATION, BLANDING, UTAH
NORTH YELLOWCAKE SCRUBBER EXHAUST
Dryer Baghouse
TABLE V
COMPLETE RESULTS, PM
DENISON MINES CORPORATION
YELLOW CAKE DRYER BAGHOUSE
Symbol Description Dimensions Run #1
Date Date 8/24/10
Filter # 5606
Begin Time Test Began 9:24
End Time Test Ended 12:19
Pbm Meter Barometric Pressure In. Hg. Abs 24.60
H Orifice Pressure Drop In. H2O 1.325
Y Meter Calibration Y Factor dimensionless 1.010
Vm Volume Gas Sampled--Meter Conditions cf 87.837
Tm Avg Meter Temperature oF 87.8
P Sq Root Velocity Head Root In. H2O 0.5138
Wtwc Weight Water Collected Grams 23.2
Tt Duration of Test Minutes 120
Cp Pitot Tube Coefficient Dimensionless 0.84
Dn Nozzle Diameter Inches 0.2745
CO2 Volume % Carbon Dioxide Percent 0.00
O2 Volume % Oxygen Percent 20.90
N2 & CO Volume % Nitrogen and Carbon Monoxide Percent 79.10
Vmstd Volume Gas Sampled (Standard) dscf 70.583
Vw Volume Water Vapor scf 1.094
Bws Fraction H2O in Stack Gas Fraction 0.015
Xd Fraction of Dry Gas Fraction 0.985
Md Molecular Wt. Dry Gas lb/lbmol 28.84
Ms Molecular Wt. Stack Gas lb/lbmol 28.67
%I Percent Isokinetic Percent 96.3
Ts Avg Stack Temperature oF 113.3
As Stack Cross Sectional Area Sq. Ft.1.396
PG Stack Static Pressure In. H2O -0.20
Pbp Sample Port Barometric Pressure In. Hg. Abs 24.53
Ps Stack Pressure In. Hg. Abs 24.515
Qs Stack Gas Volumetric Flow Rate (Std) dscfm 2.07E+03
Qa Stack Gas Volumetric Flow Rate (Actual) cfm 2.79E+03
Vs Velocity of Stack Gas fpm 2.00E+03
Curies Radionuclides per sample pCi 2742.1
Crad Concentration of Radionuclides pCi/dscf 38.8491
ERrad Emission Rate of Radionuclides pCi/hr 4.835E+06
M5 Nomenclature
%I = percent isokinetic, percent
As = stack cross-sectional area (ft3)
ASP = see P
Btu = unit heat value (British thermal unit)
Bws = fraction of water in stack gas
CB = concentration of particulate matter, back half (gr/dscf,lb/dscf, etc.)
Cf = concentration of particulate matter, front half (gr/dscf,lb/dscf, etc.)
Cmetal = concentration of metals (ppm, g/ft3, etc.) atomic symbol replaces "metal"
CO2 = percent carbon dioxide in the stack gas
Cp = pitot tube coefficient (0.84)
CX (avg) = species symbol replaces x .
CX (corr) = actual gas concentration corrected to required percent O2
H = orifice pressure drop (inches H2O)
H@ = orifice pressure (inches H2O)
P = stack flow pressure differential (inches H2O)
Ds = diameter of the stack (feet)
Dn = nozzle diameter (inches)
EA = percent excess air
ERB = emission rate of back half particulate (lb/hr)
ERF = emission rate of front half particulate (lb/hr)
ERmmBtu = emission rate per mmBtu or ton of fuel etc.
ERX = emission rate of compound which replaces x
k-fact = multiplier of test point P to determine test point H
L = length of rectangular stack (inches)
mBtu = thousand Btu
Md = molecular weight of stack gas, dry basis (lb/lb-mol)
MF = mass of particulate on filter (mg)
MFP = mass of particulate matter on filter and probe (mg)
mmBtu = million Btu
MP = mass of particulate matter in probe (mg)
Ms = molecular weight of stack gas, wet basis (g/gmol)
N2 = percent nitrogen in the stack gas
O2 = percent oxygen in the stack gas
P = average of the square roots of P (may also be referred to as ASP)
Pbm = absolute barometric pressure at the dry gas meter (inches Hg)
Pbp = absolute barometric pressure at the sample location (inches Hg)
PG = stack static pressure (inches H2O)
Ps = absolute stack pressure (inches Hg)
Pstd = absolute pressure at standard conditions (29.92 inches Hg.)
 = time of test (minutes)
Qa = stack gas volumetric flow rate (acfm)
Qs = stack gas volumetric flow rate (dscfm)
QW = wet stack gas std. volumetric flow (ft3/min, wscfm)
Ts = stack temperature (oF)
Tstd = absolute temperature at standard conditions (528oR)
Tt = see 
M5 Nomenclature
um = mean molecular speed (cm/s)
Vm = sample volume (ft3) at meter conditions
Vmstd = volume standard (dscf), sample volume adjusted to 68oF and 29.92 inches Hg.
Vs = velocity of stack gas (fpm)
Vwc = volume water vapor (scf) at 68oF and 29.92 inches Hg.
W = Width of rectangular stack (inches)
Wtwc = weight of the condensed water collected (grams)
Xd = fraction of dry gas
Y = meter calibration Y-factor (dimensionless)
Method 5
%I =Vmstd • (Ts + 460) • 1039 / ( • Vs • Ps • Xd • Dn2)
As =(Ds2 / 4) • 
Bws =Vw / (Vmstd +Vw)
CB =MB • 0.01543 / Vmstd
Cf =Mfp • 0.01543 / Vmstd
CX (corr) =CX (avg) • (20.9 - desired %O2) / (20.9 - actual %O2)
Deq =2 • L • W / (L + W)
Dn des ={0.0269 • (Pbm + 0.0735) / [(Tm + 460) • Cp • Xd • [(Ts + 460) • Ms) / (Ps • P)]}
EA =(%O2 - 0.5 %CO) / [0.264 %N2 - (%O2 - 0.5 %CO)]
ERB =CB • Qs • 0.00857
ERF =Cf • Qs • 0.00857
ERmmBtu =ERX / (mmBtu / hr)
K-fact =846.72 • Dn4 • H@ • Cp2 • Xd2 • Md • Ps • (Tm + 460) / [Ms • (Ts + 460) • (Pbm + H / 13.6)]
Md =CO2 • 0.44 + O2 • 0.32 + N2 •0.28
Ms =(Md • Xd) + (18 • Bws)
Ps =Pbp + (PG / 13.6)
Qa =Vs • As
Qs = Qa • Xd • Ps • Tstd / [(Ts + 460) • Pstd]
QW =Qs / Xd
Vmstd = Vm • Y • Tstd • (Pbm + H / 13.6) / [Pstd • (Tm + 460)]
Vs = 85.49 • 60 • Cp • P •  [(Ts + 460) / (Ps • Ms)]
Vwc =Wtwc • 0.04715
Xd = 1 - Bws
B
APPENDIX B
North Yellow Cake Scrubber
Preliminary Velocity Traverse and Sampling Point Location Data
Particulate Field Data
Yellow Cake Dryer Baghouse
Preliminary Velocity Traverse and Sampling Point Location Data
Particulate Field Data
C
APPENDIX C
North Yellow Cake Scrubber
Sample Recovery
Gas Analysis Data (ORSAT)
Yellow Cake Dryer Baghouse
Sample Recovery
Gas Analysis Data (Ambient)
Chain of Custody
Lab Analysis
D
APPENDIX D
North Yellow Cake Scrubber
Figure 1. Facility Schematic Representation
Yellow Cake Dryer Baghouse
Figure 2. Facility Schematic Representation
Process Data
(Retained by Denison Mines)
Facility:
Stack Identification:

Denison Mines
8-15%
100-120
1,100
North Yellow Cake Scrubber
9.5'
9.5'
: Distance upstream from next disturbance, feet
: Distance downstream from last disturbance, feet
65': Distance of Sample Level to Ground, feet
Yellow Cake ProcessingType:
Number of Ports
Process
Type:
Control Unit
2
Estimated Temperature, oF
Estimated Velocity, fpm
18"
Scrubber
 Stack Inside Diameter, inches
Estimated Moisture, percent



Figure 1. Facility Schematic Representation
Facility:
Stack Identification:

Estimated Temperature, oF
Estimated Velocity, fpm
16"
Baghouse
 Stack Inside Diameter, inches
Estimated Moisture, percent
Yellow Cake ProcessingType:
Number of Ports
Process
Type:
Control Unit
2
: Distance upstream from next disturbance, inches
: Distance downstream from last disturbance, inches
65': Distance of Sample Level to Ground, feet
Denison Mines
0-2%
125
1,400
Baghouse
57"
454"



Figure 2. Facility Schematic Representation
E
APPENDIX E
Calibration of the console dry gas meter(s), pitot tubes, nozzles diameters, and temperature
sensors were carried out in accordance with the procedures outlined in the Quality Assurance
Handbook. The appropriate calibration data are presented in the following pages. The nozzle
calibrations are recorded on the first page of the field data sheets.
Figure 3 Schematic of Method 5/114 Sampling Train
Meter Box Calibration Data and Calculations Forms
Post-test Dry Gas Meter Calibration Data Forms
Type S Pitot Tube Inspection Data
Sample Box Temperature Sensor Calibration
METHOD 5 DRY GAS METER CALIBRATION USING CRITICAL ORIFICES
1) Select three critical orifices to calibrate the dry gas meter which bracket the expected operating range.
2) Record barometric pressure before and after calibration procedure.
3) Run at tested vacuum (from Orifice Calibration Report), for a period of time
necessary to achieve a minimum total volume of 5 cubic feet.
4) Record data and information in the GREEN cells, YELLOW cells are calculated.
INITIAL FINAL AVG (Pbar)
DATE:1/8/2010 METER SERIAL #: 26144 BAROMETRIC PRESSURE (in Hg): 25.70 25.70 25.70 IF Y VARIATION EXCEEDS 2.00%,
METER PART #: Console 6 CRITICAL ORIFICE SET SERIAL #: 1453S ORIFICE SHOULD BE RECALIBRATED
K' TESTED TEMPERATURES °F ELAPSED
FACTOR VACUUM DGM READINGS (FT
3) AMBIENT DGM INLET DGM OUTLET DGM TIME (MIN) DGM ΔH (1)(2)(3)Y
ORIFICE # RUN # (AVG) (in Hg) INITIAL FINAL NET (Vm)INITIAL FINAL INITIAL FINAL AVG θ (in H2O) Vm (STD) Vcr (STD)Y VARIATION (%)ΔH@
1 0.8137 13 164.506 169.770 5.264 74 63 68 86 90 76.75 5.00 3.00 4.4868 4.5261 1.009 1.755
2 0.8137 13 169.770 175.087 5.317 74 68 75 90 100 83.25 5.00 3.00 4.4777 4.5261 1.011 1.734
3 0.8137 13 175.087 180.451 5.364 74 75 79 100 103 89.25 5.00 3.00 4.4679 4.5261 1.013 1.715
AVG = 1.011 0.05
1 0.5317 12 197.702 202.995 5.293 74 81 82 92 95 87.50 7.50 1.20 4.4003 4.4363 1.008 1.604
2 0.5317 12 210.703 216.011 5.308 74 82 82 95 97 89.00 7.50 1.20 4.4007 4.4363 1.008 1.600
3 0.5317 12 216.011 221.324 5.313 74 82 82 97 98 89.75 7.50 1.20 4.3989 4.4363 1.009 1.597
AVG = 1.008 -0.20
1 0.3307 12 181.2020 186.454 5.252 74 80 81 92 95 87.00 12.00 0.40 4.3603 4.4147 1.012 1.380
2 0.3307 12 186.454 191.722 5.268 74 81 82 95 96 88.50 12.00 0.40 4.3616 4.4147 1.012 1.376
3 0.3307 12 191.722 196.990 5.268 74 82 81 96 92 87.75 12.00 0.40 4.3675 4.4147 1.011 1.378
AVG = 1.012 0.15
AVERAGE DRY GAS METER CALIBRATION FACTOR, Y = 1.010
AVERAGE ΔH@ = 1.571
(1) =Net volume of gas sample passed through DGM, corrected to standard conditions
K1 =17.64 oR/in. Hg (English), 0.3858 oK/mm Hg (Metric)
Tm =Absolute DGM avg. temperature (oR - English, oK - Metric) ΔH@ = 0.75 θ ΔH Vm(std)
Vcr(std) Vm
(2) =Volume of gas sample passed through the critical orifice, corrected to standard conditions
Tamb =Absolute ambient temperature (oR - English, oK - Metric)
K' = Average K' factor from Critical Orifice Calibration Reference In Out
(3) =DGM calibration factor oF oF oF
33 34 34
67 66 66
121 120 120
2010 Pre-Calibration
12
Temperature Sensors
EQUIPMENT ID #:Console #6
30
19
ENVIRONMENTAL SUPPLY COMPANY
USING THE CRITICAL ORIFICES AS CALIBRATION STANDARDS:
The following equations are used to calculate the standard volumes of air passed through the DGM, Vm (std), and the critical
orifice, Vcr (std), and the DGM calibration factor, Y. These equations are automatically calculated in the spreadsheet above.
()2 ()Tm
HPbarVmKVmstd
)6.13/(
1)(
Δ+∗∗=
Tamb
PbarKVcrstd
Θ∗∗=')(
)(
)(
std
std
Vm
VcrY=
PRE Console #6 Calibration 2010
METHOD 5 DRY GAS METER CALIBRATION USING CRITICAL ORIFICES
1) Select three critical orifices to calibrate the dry gas meter which bracket the expected operating range.
2) Record barometric pressure before and after calibration procedure.
3) Run at tested vacuum (from Orifice Calibration Report), for a period of time
necessary to achieve a minimum total volume of 5 cubic feet.
4) Record data and information in the GREEN cells, YELLOW cells are calculated.
INITIAL FINAL AVG (Pbar)
DATE:1/12/2010 METER SERIAL #: 68092 BAROMETRIC PRESSURE (in Hg): 25.67 25.67 25.67 IF Y VARIATION EXCEEDS 2.00%,
METER PART #: Console 7 CRITICAL ORIFICE SET SERIAL #: 1453S ORIFICE SHOULD BE RECALIBRATED
K' TESTED TEMPERATURES °F ELAPSED
FACTOR VACUUM DGM READINGS (FT3)AMBIENT DGM INLET DGM OUTLET DGM TIME (MIN)DGM ΔH (1) (2) (3)Y
ORIFICE # RUN # (AVG) (in Hg) INITIAL FINAL NET (Vm)INITIAL FINAL INITIAL FINAL AVG θ (in H2O) Vm (STD) Vcr (STD)Y VARIATION (%)ΔH@
1 0.8137 12 565.308 571.918 6.610 72 90 92 92 93 91.75 6.00 2.65 5.4690 5.4352 0.994 1.503
2 0.8137 12 571.918 578.535 6.617 72 92 92 93 93 92.5 6.00 2.65 5.4674 5.4352 0.994 1.501
3 0.8137 12 578.535 585.208 6.673 72 92 94 93 96 93.75 6.00 2.65 5.5012 5.4352 0.988 1.498
AVG = 0.992 -0.77
1 0.5317 12 528.501 534.214 5.713 74 90 90 90 90 90.00 8.00 1.12 4.7213 4.7265 1.001 1.492
2010 Pre-Calibration Console 7
EQUIPMENT ID #:Console #7
30
19
ENVIRONMENTAL SUPPLY COMPANY
2 0.5317 12 534.214 539.920 5.706 74 90 91 90 91 90.50 8.00 1.12 4.7112 4.7265 1.003 1.490
3 0.5317 12 539.920 545.630 5.710 74 89 92 91 92 91.00 8.00 1.12 4.7103 4.7265 1.003 1.489
AVG = 1.003 0.29
1 0.3307 12 547.8020 553.049 5.247 72 77 81 78 84 80.00 12.00 0.47 4.4083 4.4179 1.002 1.639
2 0.3307 12 553.049 558.337 5.288 72 81 86 84 89 85.00 12.00 0.47 4.4020 4.4179 1.004 1.624
3 0.3307 12 558.337 563.648 5.311 72 86 90 89 93 89.50 12.00 0.47 4.3849 4.4179 1.008 1.610
AVG = 1.004 0.48
AVERAGE DRY GAS METER CALIBRATION FACTOR, Y = 1.000
AVERAGE ΔH@ = 1.538
(1) =Net volume of gas sample passed through DGM, corrected to standard conditions
K1 =17.64 oR/in. Hg (English), 0.3858 oK/mm Hg (Metric)
Tm =Absolute DGM avg. temperature (oR - English,oK - Metric) ΔH@ = 0.75 θ ΔH Vm(std)
Vcr(std) Vm
(2) =Volume of gas sample passed through the critical orifice, corrected to standard conditions
Tamb =Absolute ambient temperature (oR - English,oK - Metric)
K' = Average K' factor from Critical Orifice Calibration Reference In Out
(3) =DGM calibration factor oF oF oF
32 33 32
72 73 72
120 120 120
Temperature Sensors
19
12
ENVIRONMENTAL SUPPLY COMPANY
USING THE CRITICAL ORIFICES AS CALIBRATION STANDARDS:The following equations are used to calculate the standard volumes of air passed through the DGM, Vm (std), and the critical orifice, Vcr(std), and the DGM calibration factor, Y. These equations are automatically calculated in the spreadsheet above.
()2 ()Tm
HPbarVmKVmstd
)6.13/(
1)(
Δ+∗∗=
Tamb
PbarKVcrstd
Θ∗∗=')(
)(
)(
std
std
Vm
VcrY=
PRE Console #7 Calibration 2010
TETCO
Sample Box Temperature Sensor Calibration
Date:1/13/2010 Calibrator: Mike McNamara Reference:Omega CL3512A
Unit ID Thermocouple
Location
Temperature Temperature Temp. Diff.
Source Reference Sensor or Result
(Medium)(oF)(oF)(oF), P/F
A
Oven Water 33 32 1
Water 203 204 1
Probe Out Water 33 32 1
Water 203 203 -
Impinger Out Water 33 32 1
WaterWater 203 202 1
B
Oven Water 33 32 1
Water 203 204 1
Probe Out Water 33 32 1
Water 203 203 -
Impinger Out Water 33 34 1
WaterWate 203 202 1
C
Oven Water 33 33 -
Water 203 203 -
Probe Out Water 33 31 -
Water 203 202 1
Impinger Out Water 33 34 1
WaterWate 203 202 1
D
Oven Water 33 32 1
Water 203 203 -
Probe Out Water 33 32 1
Water 203 203 -
Impinger Out Water 33 34 1
WaterWate 203 202 1
E
Oven Water 33 33 -
Water 203 204 1
Probe Out Water 33 33 -
Water 203 203 -
Impinger Out Water 33 34 1
WaterWate 203 201 2
F
Oven Water 33 33 -
Water 203 204 1
Probe Out Water 33 32 1
Water 203 203 -
Impinger Out Water 33 33 -
WaterWate 203 202 1
Impinger Out G Water 33 34 1Water2032012
Impinger Out H Water 33 34 1Water2032021
Impinger Out I Water 33 33 -
Water 203 203 -
Impinger Out J Water 33 33 -
Water 203 202 1
APPENDIX F
The testing followed the same procedures as outlined in previous protocols and tests at this
facility.

FOURTH QUARTER
RADIONUCLIDE EMISSIONS TEST
CONDUCTED AT
DENISON MINES CORPORATION
NORTH YELLOW CAKE SCRUBBER
YELLOW CAKE DRYER BAGHOUSE
GRIZZLY BAGHOUSE
BLANDING, UTAH
October 19, 2010December 7-8, 2010
by:
TETCO391 East 620 SouthAmerican Fork, UT 84003Phone [phone]Fax [phone] fax
Prepared for:
Denison Mines Corporation
6425 S Hwy 91
Blanding, Utah 84511
Date of Report:
February 7, 2010
iii
TABLE OF CONTENTS
PAGEIntroductionTest Purpose............................................................1Test Location and Type of Process ..........................................1Test Dates .............................................................1Pollutants Tested and Methods Applied ......................................1Test Participants.........................................................2Deviations From EPA Methods .............................................2Quality Assurance .......................................................2
Summary of ResultsEmission Results ........................................................3Process Data............................................................3Description of Collected Samples ...........................................3
Discussion of Errors or Irregularities .........................................4
Percent Isokinetics.......................................................4
Source Operation
Process Control Devices Operation..........................................5
Process Representativeness ................................................5
Sampling and Analysis Procedures
Sampling Port Location...................................................6
Sampling Point Location ..................................................6
Sampling Train Description................................................7
Sampling and Analytical Procedures.........................................7
Quality Assurance .......................................................7
Appendices
A: Complete Results and Sample Calculations
B: Raw Field Data
C: Laboratory Data and Chain of Custody
D: Raw Production Data
E: Calibration Procedures and Results
F: Related Correspondence
iv
LIST OF TABLES
PAGETable I Measured Radionuclide Emissions ..........................................3 II Percent Isokinetics.......................................................4 III Sampling Point Location ..................................................6 IV Complete Results, North Yellow Cake Scrubber ......................Appendix A V Complete Results, Yellow Cake Dryer Baghouse ......................Appendix A VI Complete Results, Grizzly Baghouse ...............................Appendix A
LIST OF FIGURES
Figure
1 Facility Schematic Representation North Yellow Cake Scrubber ..........Appendix D
2 Facility Schematic Representation Yellow Cake Dryer Baghouse .........Appendix D
3 Facility Schematic Representation Grizzly Baghouse ...................Appendix D
4 Schematic of Method 5/114 Sampling Train ..........................Appendix E
1
INTRODUCTION
Test Purpose
This test project was conducted to determine the total radionuclide emissions from the NorthYellow Cake Scrubber, Yellow Cake Dryer Baghouse, and Grizzly Baghouse exhausts in termsof Curies per dry standard cubic foot (Ci/dscf).
These tests were for U-Nat and Th-230 on the Grizzly Baghouse and U-Nat, Th-230, Ra-226,and Pb-210 on the North Yellow Cake Scrubber and Yellow Cake Dryer Baghouse.
Test Location and Type of Process
Denison Mines (USA) Corporation is located about 5 miles south of Blanding, Utah. Uranium
ore is processed into yellow cake, which is shipped to other facilities for additional processing.
There are two yellow cake dryers with individual scrubbers. Both dryer enclosures discharge
into the Dryer Baghouse. The Packaging enclosure also discharges into the Dryer Baghouse.
The North Yellow Cake (NYC) dryer was the only operating dryer at the time of the test. The
South Yellow Cake Dryer is currently not operational. The Grizzly Baghouse serve as the main
dust control device for the raw ore unloading and conveying to the processing building.
Stack schematics are shown as Figures 1 though 3 in Appendix D.
Test Dates
One run was completed on the Grizzly Baghouse October 19, 2010.
One test run was completed on the NYC Dryer December 7, 2010 and one run on December 8th.
One run was completed on the Dryer Baghouse December 8, 2010.
Pollutants Tested and Methods Applied
The tests were a determination of radionuclide emissions in accordance with EPA Method 5/114.
Test run filters and front wash residues were sent to Test America located in Richland,
Washington for radionuclide analysis.
2
Test Participants
Test Facility Ryan Palmer
State Agency None
TETCO Doug Olsen Joseph KitchenMike McNamara Kawai McNamara
Deviations From EPA Methods
None
Quality Assurance
Testing procedures and sample recovery techniques were according to those outlined in theFederal Register and the Quality Assurance Handbook for Air Pollution Measurement Systems.
3
SUMMARY OF RESULTS
Emission Results
Table I presents the findings of the test in Curies per dry standard cubic foot. Tables IV-VII inAppendix A have more detailed information.
Table I. Measured Radionuclide Emissions
Run #
North Yellow Cake
Scrubber
Yellow Cake Dryer
Baghouse
Grizzly Baghouse
pCi/dscf pCi/hr pCi/dscf pCi/hr pCi/dscf pCi/hr
1 407.9 2.654E+07 29.9 3.320E+06 0.002 1.859E+02
2 354.9 2.332E+07
AVE 381.4 2.493E+07 29.9 3.320E+06 0.002 1.859E+02
Process Data
The process was operated according to standard procedures. All pertinent process data was
available for recording by agency personnel. Scrubber water flow, pressure drop readings (p)
were recorded and are found in Appendix D. The Dryer Baghouse pressure drop readings (p)were recorded and are found on the test run sheets. Production data will be submitted by DenisonMines.
Description of Collected Samples
The test filters for the North Yellow Cake Scrubber were heavily covered with a white or pinkishwhite colored particulate. The front washes were clear in appearance.
The test filters for the Yellow Cake Dryer Baghouse were lightly colored with a tan coloredparticulate. The front wash was clear in appearance.
The test filters for the Grizzly Baghouse were had no visible particulate. The front wash wasclear in appearance.
Discussion of Errors or Irregularities
4
None
Percent Isokinetic Sampling
Each of the tests were isokinetic within the ±10% of 100% criterion specified in the FederalRegister. They also meet the Utah State Department of Environmental Quality, Division of AirQuality specification of isokinetic sampling point by point. Isokinetic values for each test run arepresented in Table II.
Table II. Percent Isokinetic Sampling
Run #
North Yellow
Cake Scrubber
Yellow Cake
Dryer Baghouse
Grizzly
Baghouse
1 101 98 100
297
5
SOURCE OPERATION
Process Control Devices Operation
All process control devices were operated normally. Recorded scrubber water flow, pressure and
baghouse p readings were recorded and are found on the test run sheets or in Appendix D.
Process Representativeness
The facility was operated normally. Production data was retained by Denison Mines.
6
SAMPLING AND ANALYSIS PROCEDURES
Sampling Port Location
The inside diameter of the North Yellow Cake Scrubber stack is 18.0 inches. The two, four-inchdiameter sample port are located 6.3 diameters (9.5 feet) downstream from the last disturbanceand 6.3 diameters (9.5 feet) upstream from the next disturbance. Figure 1 in Appendix D is aschematic of the stack.
The inside diameter of the Yellow Cake Dryer Baghouse stack is 16.0 inches. The two, four-inchdiameter sample ports are located 28.38 diameters (454 inches) downstream from the lastdisturbance and 3.56 diameters (57 inches) upstream from the next disturbance. The sample port
locations are depicted in Figure 2 in Appendix D.
The inside diameter of the Grizzly Baghouse stack is 18.75 inches. There are two, three-inch
diameter sample ports located 2.56 diameters (48 inches) downstream from the last disturbance
and 1.31 diameters (24.5 inches) upstream from the next disturbance. The sample port locations
are depicted in Figure 3 in Appendix D.
Sampling Point Location
Table III shows the distance of each sampling point from the inside wall according to EPA
Method 1. Each point is marked and identified with a wrapping of glass tape and numbered.
These points are determined by measuring the distance from the inside wall.
Table III. Sampling Point Location
Sample Point Distance (inches) from Inside Wall
NYC Scrubber Dryer Baghouse Grizzly Baghouse
1 0.58 0.70 0.50
2 1.89 2.34 1.26
3 3.49 4.74 2.21
4 5.81 11.26 3.32
5 12.19 13.66 4.69
6 14.51 15.30 6.68
7 16.11 12.08
8 17.42 14.06
9 15.43
10 16.54
11 17.48
12 18.25
7
Sampling Train Description
To determine the actual emission rates for this stack, 40 CFR 60, Appendix A, Methods 1-5/114were followed.
All sampling trains were made of inert materials, (Teflon, stainless steel and glass) to preventinterference of the sampled gas and particulate.
The stack analyzers used to conduct Methods 1-5/114 are constructed to meet the specificationsoutlined in the CFR. The temperature sensors are K-type thermocouples. Heater, vacuum andpitot line connections have been designed to be interchangeable with all units used by the tester. A 316 stainless steel probe liner was used for the tests. Figure 4 in Appendix E is a sketch of theMethods 5/114 sampling train.
Sample boxes were prepared for testing by following the prescribed procedures outlined inMethods 5/114.
Sampling and Analytical Procedures
All sampling and analytical test procedures were as specified in 40 CFR 60, Appendix A,Methods 5/114.
Quality Assurance
All equipment set-up, sampling procedures, sample recovery and equipment calibrations were
carried out according to the procedures specified in 40 CFR 60 and the Quality Assurance
Handbook for Air Pollution Measurement Systems.
8
APPENDIX
A: Complete Results and Sample Calculations
B: Raw Field Data
C: Laboratory Data and Chain of Custody
D: Raw Production Data
E: Calibration Procedures and Results
F: Related Correspondence
A
APPENDIX A
Table IV Complete Results, North Yellow Cake Scrubber
Table V Complete Results, Yellow Cake Dryer Baghouse
Table VI Complete Results, Grizzly Baghouse
Nomenclature
Sample Equations
NYC Scrubber
Symbol Description Dimensions Run #1 Run #2
Date 12/7/10 12/8/10
Filter #5677 5679
Begin Time Test Began 7:58 7:50
End Time Test Ended 18:03 16:03
Pbm Meter Barometric Pressure In. Hg. Abs 24.60 24.65
H Orifice Pressure Drop In. H2O 0.916 0.969
Y Meter Calibration Y Factor dimensionless 1.010 1.010
Vm Volume Gas Sampled--Meter Conditions cf 297.727 304.173
Tm Avg Meter Temperature oF 96.4 94.0
P Sq Root Velocity Head Root In. H2O 0.2315 0.2319
Wtwc Weight Water Collected Grams 638.6 653.9
Tt Duration of Test Minutes 480 480
Cp Pitot Tube Coefficient Dimensionless 0.84 0.84
Dn Nozzle Diameter Inches 0.3810 0.3920
CO2 Volume % Carbon Dioxide Percent 3.50 3.30
O2 Volume % Oxygen Percent 16.20 16.10
N2 & CO Volume % Nitrogen and Carbon Monoxide Percent 80.30 80.60
Vmstd Volume Gas Sampled (Standard) dscf 235.260 241.922
Vw Volume Water Vapor scf 30.110 30.831
Bws (measured)Fraction H2O in Stack Gas (Measured)Fraction 0.113 0.113
Bws (saturated)Fraction H2O in Stack Gas (Saturated)Fraction 0.110 0.104
Bws Fraction H2O in Stack Gas *Fraction 0.110 0.104
Xd Fraction of Dry Gas Fraction 0.890 0.896
Md Molecular Wt. Dry Gas lb/lbmol 29.21 29.17
Ms Molecular Wt. Stack Gas lb/lbmol 27.98 28.01
%I Percent Isokinetic Percent 100.9 97.0 AVG
Ts Avg Stack Temperature oF 111.3 109.6 110.5
As Stack Cross Sectional Area Sq. Ft.1.767 1.767
PG Stack Static Pressure In. H2O -0.045 -0.045
Pbp Sample Port Barometric Pressure In. Hg. Abs 24.53 24.58
Ps Stack Pressure In. Hg. Abs 24.527 24.577
Qs Stack Gas Volumetric Flow Rate (Std) dscfm 1.08E+03 1.10E+03 1.09E+03
Qa Stack Gas Volumetric Flow Rate (Actual) cfm 1.61E+03 1.61E+03 1.61E+03
Vs Velocity of Stack Gas fpm 9.10E+02 9.09E+02 9.10E+02
Curies Radionuclides per sample pCi 95962.1 85864.8 **
Crad Concentration of Radionuclides pCi/dscf 407.898 354.927 381.412
ERrad Emission Rate of Radionuclides pCi/hr 2.654E+07 2.332E+07 2.493E+07
*If the measured moisture content is greater than the saturated moisture level (supersaturated),
the saturated moisture value will be used in all calculations (40 CFR 60, Method 4, Section 12.1.7).
TABLE IV
COMPLETE RESULTS
DENISON MINES CORPORATION, BLANDING, UTAH
NORTH YELLOWCAKE SCRUBBER EXHAUST
Dryer Baghouse
TABLE V
COMPLETE RESULTS, PM
DENISON MINES CORPORATION
YELLOW CAKE DRYER BAGHOUSE
Symbol Description Dimensions Run #1
Date Date 12/8/10
Filter # 5676
Begin Time Test Began 9:32
End Time Test Ended 11:34
Pbm Meter Barometric Pressure In. Hg. Abs 24.65
H Orifice Pressure Drop In. H2O 0.969
Y Meter Calibration Y Factor dimensionless 1.002
Vm Volume Gas Sampled--Meter Conditions cf 79.208
Tm Avg Meter Temperature oF 76.3
P Sq Root Velocity Head Root In. H2O 0.4397
Wtwc Weight Water Collected Grams 10.9
Tt Duration of Test Minutes 120
Cp Pitot Tube Coefficient Dimensionless 0.84
Dn Nozzle Diameter Inches 0.2760
CO2 Volume % Carbon Dioxide Percent 0.00
O2 Volume % Oxygen Percent 20.90
N2 & CO Volume % Nitrogen and Carbon Monoxide Percent 79.10
Vmstd Volume Gas Sampled (Standard) dscf 64.561
Vw Volume Water Vapor scf 0.514
Bws Fraction H2O in Stack Gas Fraction 0.008
Xd Fraction of Dry Gas Fraction 0.992
Md Molecular Wt. Dry Gas lb/lbmol 28.84
Ms Molecular Wt. Stack Gas lb/lbmol 28.75
%I Percent Isokinetic Percent 97.9
Ts Avg Stack Temperature oF 76.7
As Stack Cross Sectional Area Sq. Ft.1.396
PG Stack Static Pressure In. H2O -0.21
Pbp Sample Port Barometric Pressure In. Hg. Abs 24.58
Ps Stack Pressure In. Hg. Abs 24.565
Qs Stack Gas Volumetric Flow Rate (Std) dscfm 1.85E+03
Qa Stack Gas Volumetric Flow Rate (Actual) cfm 2.31E+03
Vs Velocity of Stack Gas fpm 1.65E+03
Curies Radionuclides per sample pCi 1933.6 *
Crad Concentration of Radionuclides pCi/dscf 29.9498
ERrad Emission Rate of Radionuclides pCi/hr 3.320E+06
*Values below the detection limit are not included.
Grizzly
TABLE VI
COMPLETE RESULTS, PM
DENISON MINES CORPORATION
GRIZZLY BAGHOUSE
Symbol Description Dimensions Run #1
Date Date 10/19/10
Filter # 5642
Begin Time Test Began 9:25
End Time Test Ended 17:48
Pbm Meter Barometric Pressure In. Hg. Abs 24.50
H Orifice Pressure Drop In. H2O 1.054
Y Meter Calibration Y Factor dimensionless 1.000
Vm Volume Gas Sampled--Meter Conditions cf 323.222
Tm Avg Meter Temperature oF 86.7
P Sq Root Velocity Head Root In. H2O 0.2311
Wtwc Weight Water Collected Grams 60.7
Tt Duration of Test Minutes 480
Cp Pitot Tube Coefficient Dimensionless 0.84
Dn Nozzle Diameter Inches 0.3765
CO2 Volume % Carbon Dioxide Percent 0.00
O2 Volume % Oxygen Percent 20.90
N2 & CO Volume % Nitrogen and Carbon Monoxide Percent 79.10
Vmstd Volume Gas Sampled (Standard) dscf 256.426
Vw Volume Water Vapor scf 2.862
Bws Fraction H2O in Stack Gas Fraction 0.011
Xd Fraction of Dry Gas Fraction 0.989
Md Molecular Wt. Dry Gas lb/lbmol 28.84
Ms Molecular Wt. Stack Gas lb/lbmol 28.72
%I Percent Isokinetic Percent 100.0
Ts Avg Stack Temperature oF 79.3
As Stack Cross Sectional Area Sq. Ft.1.917
PG Stack Static Pressure In. H2O -0.06
Pbp Sample Port Barometric Pressure In. Hg. Abs 24.47
Ps Stack Pressure In. Hg. Abs 24.466
Qs Stack Gas Volumetric Flow Rate (Std) dscfm 1.32E+03
Qa Stack Gas Volumetric Flow Rate (Actual) cfm 1.67E+03
Vs Velocity of Stack Gas fpm 8.72E+02
Curies Radionuclides per sample pCi 0.6 *
Crad Concentration of Radionuclides pCi/dscf 0.0023
ERrad Emission Rate of Radionuclides pCi/hr 1.859E+02
*Values below the detection limit are not included.
M5 Nomenclature
%I = percent isokinetic, percent
As = stack cross-sectional area (ft3)
ASP = see P
Btu = unit heat value (British thermal unit)
Bws = fraction of water in stack gas
CB = concentration of particulate matter, back half (gr/dscf,lb/dscf, etc.)
Cf = concentration of particulate matter, front half (gr/dscf,lb/dscf, etc.)
Cmetal = concentration of metals (ppm, g/ft3, etc.) atomic symbol replaces "metal"
CO2 = percent carbon dioxide in the stack gas
Cp = pitot tube coefficient (0.84)
CX (avg) = species symbol replaces x .
CX (corr) = actual gas concentration corrected to required percent O2
H = orifice pressure drop (inches H2O)
H@ = orifice pressure (inches H2O)
P = stack flow pressure differential (inches H2O)
Ds = diameter of the stack (feet)
Dn = nozzle diameter (inches)
EA = percent excess air
ERB = emission rate of back half particulate (lb/hr)
ERF = emission rate of front half particulate (lb/hr)
ERmmBtu = emission rate per mmBtu or ton of fuel etc.
ERX = emission rate of compound which replaces x
k-fact = multiplier of test point P to determine test point H
L = length of rectangular stack (inches)
mBtu = thousand Btu
Md = molecular weight of stack gas, dry basis (lb/lb-mol)
MF = mass of particulate on filter (mg)
MFP = mass of particulate matter on filter and probe (mg)
mmBtu = million Btu
MP = mass of particulate matter in probe (mg)
Ms = molecular weight of stack gas, wet basis (g/gmol)
N2 = percent nitrogen in the stack gas
O2 = percent oxygen in the stack gas
P = average of the square roots of P (may also be referred to as ASP)
Pbm = absolute barometric pressure at the dry gas meter (inches Hg)
Pbp = absolute barometric pressure at the sample location (inches Hg)
PG = stack static pressure (inches H2O)
Ps = absolute stack pressure (inches Hg)
Pstd = absolute pressure at standard conditions (29.92 inches Hg.)
 = time of test (minutes)
Qa = stack gas volumetric flow rate (acfm)
Qs = stack gas volumetric flow rate (dscfm)
QW = wet stack gas std. volumetric flow (ft3/min, wscfm)
Ts = stack temperature (oF)
Tstd = absolute temperature at standard conditions (528oR)
Tt = see 
M5 Nomenclature
um = mean molecular speed (cm/s)
Vm = sample volume (ft3) at meter conditions
Vmstd = volume standard (dscf), sample volume adjusted to 68oF and 29.92 inches Hg.
Vs = velocity of stack gas (fpm)
Vwc = volume water vapor (scf) at 68oF and 29.92 inches Hg.
W = Width of rectangular stack (inches)
Wtwc = weight of the condensed water collected (grams)
Xd = fraction of dry gas
Y = meter calibration Y-factor (dimensionless)
Method 5
%I =Vmstd • (Ts + 460) • 1039 / ( • Vs • Ps • Xd • Dn2)
As =(Ds2 / 4) • 
Bws =Vw / (Vmstd +Vw)
CB =MB • 0.01543 / Vmstd
Cf =Mfp • 0.01543 / Vmstd
CX (corr) =CX (avg) • (20.9 - desired %O2) / (20.9 - actual %O2)
Deq =2 • L • W / (L + W)
Dn des ={0.0269 • (Pbm + 0.0735) / [(Tm + 460) • Cp • Xd • [(Ts + 460) • Ms) / (Ps • P)]}
EA =(%O2 - 0.5 %CO) / [0.264 %N2 - (%O2 - 0.5 %CO)]
ERB =CB • Qs • 0.00857
ERF =Cf • Qs • 0.00857
ERmmBtu =ERX / (mmBtu / hr)
K-fact =846.72 • Dn4 • H@ • Cp2 • Xd2 • Md • Ps • (Tm + 460) / [Ms • (Ts + 460) • (Pbm + H / 13.6)]
Md =CO2 • 0.44 + O2 • 0.32 + N2 •0.28
Ms =(Md • Xd) + (18 • Bws)
Ps =Pbp + (PG / 13.6)
Qa =Vs • As
Qs = Qa • Xd • Ps • Tstd / [(Ts + 460) • Pstd]
QW =Qs / Xd
Vmstd = Vm • Y • Tstd • (Pbm + H / 13.6) / [Pstd • (Tm + 460)]
Vs = 85.49 • 60 • Cp • P •  [(Ts + 460) / (Ps • Ms)]
Vwc =Wtwc • 0.04715
Xd = 1 - Bws
B
APPENDIX B
North Yellow Cake Scrubber
Preliminary Velocity Traverse and Sampling Point Location Data
Particulate Field Data
Yellow Cake Dryer Baghouse
Preliminary Velocity Traverse and Sampling Point Location Data
Particulate Field Data
Grizzly Baghouse
Preliminary Velocity Traverse and Sampling Point Location Data
Particulate Field Data
North Yellow Cake Dryer Scrubber
Yellow Cake Dryer Baghouse
Grizzly Baghouse
C
APPENDIX C
North Yellow Cake Scrubber
Sample Recovery
Gas Analysis Data (ORSAT)
Yellow Cake Dryer Baghouse
Sample Recovery
Gas Analysis Data (Ambient)
Grizzly Baghouse
Sample Recovery
Gas Analysis Data (Ambient)
Chain of Custody
Lab Analysis
North Yellow Cake Dryer Scrubber
Yellow Cake Dryer Baghouse
Grizzly Baghouse
Analytical Data Package Prepared For
Radiochemical Analysis By
Denison Mines (USA) Corp.
Denison Mine 2010 4th Quarter
TestAmerica
2800 G.W. Way, Richland Wa, 99354, (509)-375-3131.
Data Package Contains ______ Pages
Assigned Laboratory Code:
Client Sample ID (List Order) Lot-Sa No. Work OrderSDG No.
Report No.: 45715
Order No.Report DB ID Batch No.
Results in this report relate only to the sample(s) analyzed.
5642 R1 GRIZZLY FILTER
& BEAKE
9MCFPL1042540 J0L160499-1 MCFPL1AA 0355384
5642 R1 GRIZZLY FILTER & BEAKE 9MCFPL10J0L160499-1 MCFPL1AC 0355385
5676 BAGHOUSE FILTER & BEAKER 9MCFRJ10J0L160499-4 MCFRJ1AD 0355382
5676 BAGHOUSE FILTER & BEAKER 9MCFRJ10J0L160499-4 MCFRJ1AC 0355383
5676 BAGHOUSE FILTER
& BEAKER
9MCFRJ10J0L160499-4 MCFRJ1AA 0355384
5676 BAGHOUSE FILTER & BEAKER 9MCFRJ10J0L160499-4 MCFRJ1AE 0355385
5677,5678 R1 NYC FILTERS & BEA 9MCFP510J0L160499-2 MCFP51AD 0355382
5677,5678 R1 NYC
FILTERS & BEA
9MCFP510J0L160499-2 MCFP51AC 0355383
5677,5678 R1 NYC FILTERS & BEA 9MCFP510J0L160499-2 MCFP51AA 0355384
5677,5678 R1 NYC FILTERS & BEA 9MCFP510J0L160499-2 MCFP51AE 0355385
5679 R2 NYC FILTERS & BEAKERS 9MCFQ710J0L160499-3 MCFQ71AD 0355382
5679 R2 NYC FILTERS &
BEAKERS
9MCFQ710J0L160499-3 MCFQ71AC 0355383
5679 R2 NYC FILTERS & BEAKERS 9MCFQ710J0L160499-3 MCFQ71AA 0355384
5679 R2 NYC FILTERS & BEAKERS 9MCFQ710J0L160499-3 MCFQ71AE 0355385
TestAmerica
rptSTLRchTitle v3.73
TestAmerica Laboratories, Inc.1

Certificate of Analysis
February 4, 2011
Denison Mines (USA) Corp 1050 17th Street, Suite 950
Denver, CO 80265
Attention: Dean Kitchen
Date Received at Lab : December 15, 2010 Project Name : Denison Mines 4th Qtr Blanding, Utah
Sample Type : Four (4) Stack Filter Samples SDG Number : 42540
CASE NARRATIVE
I. Introduction
On December 15, 2010, four stack filter samples were received at TestAmerica’s Richland laboratory for radiochemical analysis. Upon receipt, the samples were assigned the TestAmerica identification numbers as described on the cover page of the Analytical Data Package report form. The samples were assigned to Lot Numbers J0L160499.

II. Sample Receipt The samples were received in good condition. The COC indicates sample 5677 R1 NYC Filters and Beaker while the actual sample container says 5677 and 5678 R1 NYC Filters and Beaker. The ID on the
container is what was used. III. Analytical Results/Methodology
The analytical results for this report are presented by laboratory sample ID. Each set of data includes sample identification information; analytical results and the appropriate associated statistical uncertainties.
The analysis requested was: Alpha Spectroscopy Thorium-228, -230, -232 by method RL-ALP-001 Uranium-234, -235, -238 by method RL-ALP-004
Gamma Spectroscopy
Pb-210 by method RL-GA-001 Alpha Scintillation Radium-226 by method RL-RA-001
TestAmerica Laboratories, Inc.2

Denison Mines (USA) Corp February 4, 2011

IV. Quality Control
The analytical result for each analysis performed includes a minimum of one laboratory control sample (LCS), and one reagent blank sample analysis. Any exceptions have been noted in the “Comments” section.

V. Comments Alpha Spectroscopy Thorium-228, 230, 232
The achieved MDA of the samples exceeds the detection limit. However, in most cases, the activity of the samples exceeds the MDA and detection limit. The tracer yield of sample 5642 R1 Grizzly Filter and Beaker is below acceptance limits. The data is reported. Except as noted, the LCS, batch blank and sample results are within acceptance limits.
Uranium-234, 235, 238 The FWHM of sample 5677, 5678 R1 NYC Filters and Beaker exceeds acceptance criteria due to the high
level of analyte in the sample. Broadening of the peaks is expected due to the low specific activity of the Uranium. The spectrum was resolvable. The achieved MDA of the batch exceeds the detection limit from reduced aliquot sizes taken due to historical process knowledge. The sample activity exceeds the MDA and detection limit for three of the four samples. Data is accepted. Except as noted, the LCS, batch
blank, sample and sample duplicate results are within acceptance limits. Gamma Spectroscopy Pb-210 The achieved MDA of the samples exceeds the detection limit due insufficient sample volume. Data is
accepted. Except as noted, the LCS, batch blank, sample and sample duplicate results are within acceptance limits. Alpha Scintillation Radium-226
The achieved MDA exceeds the detection limit due to sample volume available for analysis. Sample activity exceeds MDA/DL in two of the three samples. The tracer yield of samples 5677, 5678 R1 NYC Filters and Beaker, 5679 R2 NYC Filters and Beaker were below acceptance limits. There is no more
sample volume available for re-analysis. The batch QC is within acceptance limits and indicates the method is in control. Data is reported. Except as noted, the LCS, batch blank and sample results are within acceptance limits.

TestAmerica Laboratories, Inc.3

Denison Mines (USA) Corp February 4, 2011

I certify that this Certificate of Analysis is in compliance with the SOW and/or NELAC, both technically and for completeness, for other than the conditions detailed above. The Laboratory Manager or a
designee, as verified by the following signature has authorized release of the data contained in this hard copy data package. Reviewed and approved:

________________________ Erika Jordan Customer Service Manager
TestAmerica Laboratories, Inc.4
DRINKING WATER ASTM METHOD CROSS REFERENCES
Referenced Method Isotope(s)TestAmerica Richland's SOP No.
EPA 901.1 Cs-134, I-131 RL-GAM-001
EPA 900.0 Alpha & Beta RL-GPC-001
EPA 00-02 Gross Alpha (Coprecipitation) RL-GPC-002
EPA 903.0 Total Alpha Radium (Ra-226) RL-RA-002
EPA 903.1 Ra-226 RL-RA-001
EPA 904.0 Ra-228 RL-RA-001
EPA 905.0 Sr-89/90 RL-GPC-003
ASTM D5174 Uranium RL-KPA-003
EPA 906.0 Tritium RL-LSC-005
TestAmerica Richland has adopted the internationally accepted approach to estimating
uncertainties described in “NIST Technical Note 1297, 1994 Edition”. The approach, "Law of Propagation of Errors", involves the identification of all variables in an analytical method which are used to derive a result. These variables are related to the analytical result (R) by some functional relationship, R = constants * f(x,y,z,...). The components (x,y,z) are evaluated to determine their contribution to the overall method uncertainty. The individual component uncertainties (ui) are then combined using a statistical model that provides the most probable overall uncertainty value. All component uncertainties are categorized as type
A, evaluated by statistical methods, or type B, evaluated by other means. Uncertainties not included in the components, such as sample homogeneity, are combined with the component uncertainty as the square root of the sum-of-the-squares of the individual uncertainties. The uncertainty associated with the derived result is the combined uncertainty (uc) multiplied by the coverage factor (1,2, or 3). When three or more sample replicates are used to derive the analytical result, the type A
uncertainty is the standard deviation of the mean value (S/?n), where S is the standard deviation of the derived results. The type B uncertainties are all other random or non-random components that are not included in the standard deviation. The derivation of the general "Law of Propagation of Errors" equations and specific example are available on request.
Uncertainty Estimation
Drinking Water Method Cross References
Results in this report relate only to the sample(s) analyzed.
rptGeneralInfo v3.72
TestAmerica
TestAmerica Laboratories, Inc.5
Action Lev An agreed upon activity level used to trigger some action when the final result is greater than or equal to the Action Level. Often the Action Level is related to the Decision Limit. Batch The QC preparation batch number that relates laboratory samples to QC samples that were prepared and analyzed together. Bias Defined by the equation (Result/Expected)-1 as defined by ANSI N13.30. COC No Chain of Custody Number assigned by the Client or TestAmerica. Count Error (#s) Poisson counting statistics of the gross sample count and background. The uncertainty is absolute and in the same
units as the result. For Liquid Scintillation Counting (LSC) the batch blank count is the background. Total Uncert (#s)
uc – Combined
Uncertainty.
All known uncertainties associated with the preparation and analysis of the sample are propagated to give a measure of the uncertainty associated with the result, uc the combined uncertainty. The uncertainty is absolute and in the same units as the result. (#s), Coverage Factor The coverage factor defines the width of the confidence interval, 1, 2 or 3 standard deviations. CRDL (RL) Contractual Required Detection Limit as defined in the Client’s Statement Of Work or TestAmerica “default” nominal detection limit. Often referred to the reporting level (RL) Lc Decision Level based on instrument background or blank, adjusted by the Efficiency, Chemical Yield, and Volume associated with the sample. The Type I error probability is approximately 5%. Lc=(1.645 * Sqrt(2*(BkgrndCnt/BkgrndCntMin)/SCntMin)) * (ConvFct/(Eff*Yld*Abn*Vol) * IngrFct). For LSC methods the batch blank is used as a measure of the background variability. Lc cannot be calculated when the background count is zero. Lot-Sample No The number assigned by the LIMS software to track samples received on the same day for a given client. The sample number is a sequential number assigned to each sample in the Lot.
MDC|MDA Detection Level based on instrument background or blank, adjusted by the Efficiency, Chemical Yield, and Volume with a Type I and II error probability of approximately 5%. MDC = (4.65 * Sqrt((BkgrndCnt/BkgrndCntMin)/SCntMin) + 2.71/SCntMin) * (ConvFct/(Eff * Yld * Abn * Vol) * IngrFct). For LSC methods the batch blank is used as a measure of the background variability. Primary Detector The instrument identifier associated with the analysis of the sample aliquot. Ratio U-234/U-238 The U-234 result divided by the U-238 result. The U-234/U-238 ratio for natural uranium in NIST SRM 4321C is 1.038. Rst/MDC Ratio of the Result to the MDC. A value greater than 1 may indicate activity above background at a high level of confidence. Caution should be used when applying this factor and it should be used in concert with the qualifiers associated with the result. Rst/TotUcert Ratio of the Result to the Total Uncertainty. If the uncertainty has a coverage factor of 2 a value greater than 1 may indicate activity above background at approximately the 95% level of confidence assuming a two-sided confidence interval. Caution should be used when applying this factor and it should be used in concert with the qualifiers associated with the result. Report DB No Sample Identifier used by the report system. The number is based upon the first five digits of the Work Order Number. RER The equation Replicate Error Ratio = (S-D)/[sqrt(TPUs2 + TPUd2)] as defined by ICPT BOA where S is the original sample result, D is the result of the duplicate, TPUs is the total uncertainty of the original sample and TPUd is the total uncertainty of the duplicate sample. SDG Sample Delivery Group Number assigned by the Client or assigned by TestAmerica upon sample receipt. Sum Rpt Alpha Spec Rst(s)
The sum of the reported alpha spec results for tests derived from the same sample excluding duplicate result where the results are in the same units.
Work Order The LIMS software assign test specific identifier. Yield The recovery of the tracer added to the sample such as Pu-242 used to trace a Pu-239/40 method.
Report Definitions
rptGeneralInfo v3.72
TestAmerica
TestAmerica Laboratories, Inc.6
04-Feb-11Date:
Parameter
MDC orMDAUnits
Client Id
Work Order
Report No. :45715
Result +- Uncertainty ( s) Tracer Yield
42540SDG No:
TestAmerica
Qual
Sample Results Summary
Ordered by Method, Batch No., Client Sample ID.
2 RER2CRDLBatch
0355384 RICHRC5011
5642 R1 GRIZZLY FILTER &
BEAKE
1.13E-07TH-228 UCI/SAMCFPL1AA 2.43E-08 17%U +- 6.0E-08
8.19E-08TH-230 UCI/SA6.01E-07 17% +- 2.1E-07 3.00E-15
8.19E-08TH-232 UCI/SA0.00E+00 17%U +- 3.1E-08
5676 BAGHOUSE FILTER & BEAKER
5.40E-08TH-228 UCI/SAMCFRJ1AA 2.93E-08 34%U +- 3.3E-08
5.19E-08TH-230 UCI/SA8.89E-06 34% +- 1.7E-06 3.00E-15
5.19E-08TH-232 UCI/SA1.13E-06 34% +- 2.8E-07
5677,5678 R1 NYC FILTERS & BEA
7.28E-08TH-228 UCI/SAMCFP51AA 1.09E-07 26% +- 7.5E-08
1.02E-07TH-230 UCI/SA1.30E-04 26% +- 2.6E-05 3.00E-15
6.99E-08TH-232 UCI/SA9.85E-06 26% +- 2.1E-06
5679 R2 NYC FILTERS & BEAKERS
2.23E-08TH-228 UCI/SAMCFQ71AA 2.73E-08 88% +- 2.0E-08
2.14E-08TH-230 UCI/SA5.38E-05 88% +- 9.0E-06 3.00E-15
2.14E-08TH-232 UCI/SA7.34E-07 88% +- 1.5E-07
0355385 FFSR
5642 R1 GRIZZLY FILTER & BEAKE
3.57E-05U-234 UCI/SAMCFPL1AC 1.01E-05 92%U +- 1.8E-05 9.00E-15
3.03E-05U-235 UCI/SA5.05E-06 92%U +- 1.3E-05 9.00E-15
4.65E-05U-238 UCI/SA4.42E-05 92%U +- 3.7E-05 9.00E-15
5676 BAGHOUSE FILTER &
BEAKER
3.09E-05U-234 UCI/SAMCFRJ1AE 1.01E-03 84% +- 2.2E-04 9.00E-15
2.83E-05U-235 UCI/SA3.61E-05 84% +- 3.1E-05 9.00E-15
3.09E-05U-238 UCI/SA8.77E-04 84% +- 2.0E-04 9.00E-15
5677,5678 R1 NYC FILTERS & BEA
3.72E-05U-234 UCI/SAMCFP51AE 4.56E-02 92% +- 1.3E-02 9.00E-15
2.82E-05U-235 UCI/SA2.80E-03 92% +- 8.6E-04 9.00E-15
3.72E-05U-238 UCI/SA4.74E-02 92% +- 1.4E-02 9.00E-15
5679 R2 NYC FILTERS & BEAKERS
4.62E-05U-234 UCI/SAMCFQ71AE 4.18E-02 95% +- 6.6E-03 9.00E-15
3.51E-05U-235 UCI/SA1.39E-03 95% +- 3.0E-04 9.00E-15
6.55E-05U-238 UCI/SA4.26E-02 95% +- 6.7E-03 9.00E-15
0355382 RICHRC5011
TestAmerica
U Qual - Analyzed for but not detected above limiting criteria. Limit criteria is less than the Mdc/Mda, Total Uncert,CRDL, or not identified by gamma scan software.
RER2 - Replicate Error Ratio = (S-D)/[sqrt(sq(TPUs)+sq(TPUd))] as defined by ICPT BOA.
rptSTLRchSaSummary2 V5.2.10 A2002
TestAmerica Laboratories, Inc.7
04-Feb-11Date:
Parameter
MDC orMDAUnits
Client Id
Work Order
Report No. :45715
Result +- Uncertainty ( s) Tracer Yield
42540SDG No:
TestAmerica
Qual
Sample Results Summary
Ordered by Method, Batch No., Client Sample ID.
2 RER2CRDLBatch
0355382 RICHRC5011
5676 BAGHOUSE FILTER &
BEAKER
3.92E-07Pb-210 UCI/SAMCFRJ1AD 5.25E-07 97% +- 2.5E-07 6.00E-14
5677,5678 R1 NYC FILTERS & BEA
8.37E-07Pb-210 UCI/SAMCFP51AD 2.21E-05 52% +- 3.9E-06 6.00E-14
5679 R2 NYC FILTERS & BEAKERS
4.70E-07Pb-210 UCI/SAMCFQ71AD1.87E-05 86% +- 3.2E-06 6.00E-14
0355383 RL-RA-001
5676 BAGHOUSE FILTER & BEAKER
1.95E-07RA-226MCFRJ1AC 7.72E-08 100%U +- 1.0E-07 9.00E-14
5677,5678 R1 NYC FILTERS & BEA
9.21E-07RA-226MCFP51AC 5.92E-07 17%U +- 5.3E-07 9.00E-14
5679 R2 NYC FILTERS & BEAKERS
7.10E-07RA-226MCFQ71AC 1.49E-06 14% +- 6.6E-07 9.00E-14
30No. of Results:
TestAmerica
U Qual - Analyzed for but not detected above limiting criteria. Limit criteria is less than the Mdc/Mda, Total Uncert,CRDL, or not identified by gamma scan software.
RER2 - Replicate Error Ratio = (S-D)/[sqrt(sq(TPUs)+sq(TPUd))] as defined by ICPT BOA.
rptSTLRchSaSummary2 V5.2.10 A2002
TestAmerica Laboratories, Inc.8
04-Feb-11Date:
Parameter MDC|MDAUnits
Batch
Work Order
Report No. :45715
Result +- Uncertainty ( s) TracerYield
42540SDG No.:
TestAmerica
Qual
QC Results Summary
LCS Recovery Bias
Ordered by Method, Batch No, QC Type,.
2
RICHRC5011
0355384 BLANK QC,
4.60E-08TH-228 UCI/SAMCM5K1AA 34%U -6.25E-09 +- 1.8E-08
6.86E-08TH-230 UCI/SA 34%U 4.00E-08 +- 4.5E-08
4.20E-08TH-232 UCI/SA 34%U 1.14E-08 +- 2.3E-08
0355384 LCS,
2.45E-08TH-230 UCI/SAMCM5K1AC 52%J 107% 0.12.43E-06 +- 4.5E-07
FFSR
0355385 BLANK QC,
2.17E-07U-234 UCI/SAMCM5V1AA 92%U 3.99E-08 +- 9.6E-08
2.17E-07U-235 UCI/SA 92%U -7.60E-09 +- 9.6E-08
2.17E-07U-238 UCI/SA 92%U -7.60E-09 +- 9.6E-08
0355385 LCS,
2.10E-07U-234 UCI/SAMCM5V1AC 86% 103% 0.05.56E-06 +- 1.3E-06
1.70E-07U-235 UCI/SA 86% 102% 0.02.53E-07 +- 2.1E-07
2.10E-07U-238 UCI/SA 86% 108% 0.16.15E-06 +- 1.4E-06
RICHRC5011
0355382 BLANK QC,
5.96E-07Pb-210 UCI/SAMCM451AA 72%U 3.99E-07 +- 3.5E-07
0355382 LCS,
5.04E-07Pb-210 UCI/SAMCM451AC 79% 123% 0.21.11E-05 +- 1.9E-06
RL-RA-001
0355383 BLANK QC,
1.56E-07RA-226MCM491AA 99%U 6.06E-08 +- 8.4E-08
0355383 LCS,
9.90E-08RA-226MCM491AC 100%J 82% -0.28.23E-06 +- 1.7E-06
14No. of Results:
TestAmerica
J Qual - No U|< qualifier has been assigned and the result is below the Reporting Limit, RL (CRDL) or Report Value is Estimated.U Qual - Analyzed for but not detected above limiting criteria. Limit criteria is less than the Mdc/Mda, Total Uncert,CRDL, or not identified by gamma scan software.
Bias - (Result/Expected)-1 as defined by ANSI N13.30.
rptSTLRchQcSummary V5.2.10
A2002
TestAmerica Laboratories, Inc.9
Lo
t
-
S
a
m
p
l
e

N
o
.
:
SD
G
:
56
4
2

R
1

G
R
I
Z
Z
L
Y

F
I
L
T
E
R

&

B
E
A
K
E
42
5
4
0
Ma
t
r
i
x
:
FI
L
T
E
R
Re
c
e
i
v
e
d

D
a
t
e
:
12
/
1
5
/
2
0
1
0

1
1
:
0
0
:
0
0

A
M
La
b

N
a
m
e
:
Cl
i
e
n
t

S
a
m
p
l
e

I
D
:
Pa
r
a
m
e
t
e
r
R
e
s
u
l
t

C
o
u
n
t
Er
r
o
r

(

s
)

To
t
a
l

Un
c
e
r
t
(

s
)
Yi
e
l
d
CR
D
L
(
R
L
)
MD
C
|
M
D
A
,
Ac
t
i
o
n

L
e
v
Rp
t

U
n
i
t
,
Lc
Re
p
o
r
t

N
o
.

:
An
a
l
y
s
i
s
,
Pr
e
p

D
a
t
e
Al
i
q
u
o
t
Si
z
e
Pr
i
m
a
r
y
D
e
t
e
c
t
o
r

Co
l
l
e
c
t
i
o
n

D
a
t
e
:
10
/
1
9
/
2
0
1
0

9
:
3
0
:
0
0

A
M
45
7
1
5
Rs
t
/
M
D
C
,
Rs
t
/
T
o
t
U
c
e
r
t
2
2
Te
s
t
A
m
e
r
i
c
a
J0
L
1
6
0
4
9
9
-
1
To
t
a
l

S
a
Si
z
e
Qu
a
l
CO
C

N
o
.

:
De
n
i
s
o
n

M
i
n
e

2
0
1
0

4
t
h

Q
u
a
r
t
e
r
Or
d
e
r
e
d

b
y

C
l
i
e
n
t

S
a
m
p
l
e

I
D
,

B
a
t
c
h

N
o
.
SA
M
P
L
E

R
E
S
U
L
T
S
04
-
F
e
b
-
1
1
Da
t
e
:
FO
R
M

I
03
5
5
3
8
4
Ba
t
c
h
:
MC
F
P
L
1
A
A
Wo
r
k

O
r
d
e
r
:
9M
C
F
P
L
1
0
Re
p
o
r
t

D
B

I
D
:
RI
C
H
R
C
5
0
1
1
2.
4
3
E
-
0
8
6.
0
E
-
0
8
1.
1
3
E
-
0
7
17
%
6.
0
E
-
0
8
TH
-
2
2
8
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
0.
9
8
7
7
5
AL
P
1
7
1
Sa
m
p
l
e
0.
2
2
0.
8
1
1.
0
Sa
m
p
l
e

U

4.
0
0
E
-
0
8
6.
0
1
E
-
0
7
2.
1
E
-
0
7
8.
1
9
E
-
0
8
17
%
1.
7
E
-
0
7
TH
-
2
3
0
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
0.
9
8
7
7
5
AL
P
1
7
1
Sa
m
p
l
e
(7
.
3
)
(5
.
8
)
1.
0
Sa
m
p
l
e

3.
0
0
E
-
1
5
2.
5
9
E
-
0
8
0.
0
0
E
+
0
0
3.
1
E
-
0
8
8.
1
9
E
-
0
8
17
%
0.
0
E
+
0
0
TH
-
2
3
2
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
0.
9
8
7
7
5
AL
P
1
7
1
Sa
m
p
l
e
0.0.
1.
0
Sa
m
p
l
e

U

2.
5
9
E
-
0
8
03
5
5
3
8
5
Ba
t
c
h
:
MC
F
P
L
1
A
C
Wo
r
k

O
r
d
e
r
:
9M
C
F
P
L
1
0
Re
p
o
r
t

D
B

I
D
:
FF
S
R
1.
0
1
E
-
0
5
1.
8
E
-
0
5
3.
5
7
E
-
0
5
92
%
1.
8
E
-
0
5
U-
2
3
4
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
1

p
0.
0
0
0
9
6
AL
P
5
Sa
m
p
l
e
0.
2
8
(1
.
1
)
1.
0
Sa
m
p
l
e

U

9.
0
0
E
-
1
5
9.
3
0
E
-
0
6
5.
0
5
E
-
0
6
1.
3
E
-
0
5
3.
0
3
E
-
0
5
92
%
1.
3
E
-
0
5
U-
2
3
5
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
1

p
0.
0
0
0
9
6
AL
P
5
Sa
m
p
l
e
0.
1
7
0.
7
8
1.
0
Sa
m
p
l
e

U

9.
0
0
E
-
1
5
6.
5
8
E
-
0
6
4.
4
2
E
-
0
5
3.
7
E
-
0
5
4.
6
5
E
-
0
5
92
%
3.
6
E
-
0
5
U-
2
3
8
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
1

p
0.
0
0
0
9
6
AL
P
5
Sa
m
p
l
e
0.
9
5
(2
.
4
)
1.
0
Sa
m
p
l
e

U

9.
0
0
E
-
1
5
1.
4
7
E
-
0
5
Ra
t
i
o

U
-
2
3
4
/
2
3
8

=

0
.
2
6
No
.

o
f

R
e
s
u
l
t
s
:

C
o
m
m
e
n
t
s
:

Te
s
t
A
m
e
r
i
c
a
J
Q
u
a
l

-

N
o

U
|
<

q
u
a
l
i
f
i
e
r

h
a
s

b
e
e
n

a
s
s
i
g
n
e
d

a
n
d

t
h
e

r
e
s
u
l
t

i
s

b
e
l
o
w

t
h
e

R
e
p
o
r
t
i
n
g

L
i
m
i
t
,

R
L

(
C
R
D
L
)

o
r

R
e
p
o
r
t

V
a
l
u
e

i
s

E
s
t
i
m
a
t
e
d
.
U
Q
u
a
l

-

A
n
a
l
y
z
e
d

f
o
r

b
u
t

n
o
t

d
e
t
e
c
t
e
d

a
b
o
v
e

l
i
m
i
t
i
n
g

c
r
i
t
e
r
i
a
.

L
i
m
i
t

c
r
i
t
e
r
i
a

i
s

l
e
s
s

t
h
a
n

t
h
e

M
d
c
/
M
d
a
,

T
o
t
a
l

U
n
c
e
r
t
,
C
R
D
L
,

o
r
n
o
t

i
d
e
n
t
i
f
i
e
d

b
y

g
a
m
m
a

s
c
a
n

s
o
f
t
w
a
r
e
.
MD
C
|
M
D
A
,
L
c

-

D
e
t
e
c
t
i
o
n
,

D
e
c
i
s
i
o
n

L
e
v
e
l

b
a
s
e
d

o
n

i
n
s
t
r
u
m
e
n
t

b
a
c
k
g
r
ou
n
d

o
r

b
l
a
n
k
,

a
d
j
u
s
t
e
d

b
y

t
h
e

s
a
m
p
l
e

E
f
f
i
c
i
e
n
c
y
,

Y
i
e
l
d
,

a
n
d

V
ol
u
m
e
.
rp
t
S
T
L
R
c
h
S
a
m
p
l
e

V5
.
2
.
1
0

A
2
0
0
2
Te
s
t
A
m
e
r
i
c
a

La
b
o
r
a
t
o
r
i
e
s
,

In
c
.
10
Lo
t
-
S
a
m
p
l
e

N
o
.
:
SD
G
:
56
7
6

B
A
G
H
O
U
S
E

F
I
L
T
E
R

&

B
E
A
K
E
R
42
5
4
0
Ma
t
r
i
x
:
FI
L
T
E
R
Re
c
e
i
v
e
d

D
a
t
e
:
12
/
1
5
/
2
0
1
0

1
1
:
0
0
:
0
0

A
M
La
b

N
a
m
e
:
Cl
i
e
n
t

S
a
m
p
l
e

I
D
:
Pa
r
a
m
e
t
e
r
R
e
s
u
l
t

C
o
u
n
t
Er
r
o
r

(

s
)

To
t
a
l

Un
c
e
r
t
(

s
)
Yi
e
l
d
CR
D
L
(
R
L
)
MD
C
|
M
D
A
,
Ac
t
i
o
n

L
e
v
Rp
t

U
n
i
t
,
Lc
Re
p
o
r
t

N
o
.

:
An
a
l
y
s
i
s
,
Pr
e
p

D
a
t
e
Al
i
q
u
o
t
Si
z
e
Pr
i
m
a
r
y
D
e
t
e
c
t
o
r

Co
l
l
e
c
t
i
o
n

D
a
t
e
:
12
/
8
/
2
0
1
0

9
:
3
0
:
0
0

A
M
45
7
1
5
Rs
t
/
M
D
C
,
Rs
t
/
T
o
t
U
c
e
r
t
2
2
Te
s
t
A
m
e
r
i
c
a
J0
L
1
6
0
4
9
9
-
4
To
t
a
l

S
a
Si
z
e
Qu
a
l
CO
C

N
o
.

:
De
n
i
s
o
n

M
i
n
e

2
0
1
0

4
t
h

Q
u
a
r
t
e
r
Or
d
e
r
e
d

b
y

C
l
i
e
n
t

S
a
m
p
l
e

I
D
,

B
a
t
c
h

N
o
.
SA
M
P
L
E

R
E
S
U
L
T
S
04
-
F
e
b
-
1
1
Da
t
e
:
FO
R
M

I
03
5
5
3
8
2
Ba
t
c
h
:
MC
F
R
J
1
A
D
Wo
r
k

O
r
d
e
r
:
9M
C
F
R
J
1
0
Re
p
o
r
t

D
B

I
D
:
RI
C
H
R
C
5
0
1
1
5.
2
5
E
-
0
7
2.
5
E
-
0
7
3.
9
2
E
-
0
7
97
%
2.
4
E
-
0
7
Pb
-
2
1
0
UC
I
/
S
A
1/
2
7
/
1
1

0
8
:
5
1

a
0.
9
8
8
4
5
GP
C
3
1
D
Sa
m
p
l
e
(1
.
3
)
(4
.
1
)
1.
0
Sa
m
p
l
e

6.
0
0
E
-
1
4
1.
9
1
E
-
0
7
03
5
5
3
8
3
Ba
t
c
h
:
MC
F
R
J
1
A
C
Wo
r
k

O
r
d
e
r
:
9M
C
F
R
J
1
0
Re
p
o
r
t

D
B

I
D
:
RL
-
R
A
-
0
0
1
7.
7
2
E
-
0
8
1.
0
E
-
0
7
1.
9
5
E
-
0
7
10
0
%
1.
0
E
-
0
7
RA
-
2
2
6
1/
2
5
/
1
1

0
3
:
0
0

p
0.
9
8
8
4
AS
C
4
H
B
Sa
m
p
l
e
0.
4
(1
.
5
)
1.
0
Sa
m
p
l
e

U

9.
0
0
E
-
1
4
8.
9
6
E
-
0
8
03
5
5
3
8
4
Ba
t
c
h
:
MC
F
R
J
1
A
A
Wo
r
k

O
r
d
e
r
:
9M
C
F
R
J
1
0
Re
p
o
r
t

D
B

I
D
:
RI
C
H
R
C
5
0
1
1
2.
9
3
E
-
0
8
3.
3
E
-
0
8
5.
4
0
E
-
0
8
34
%
3.
3
E
-
0
8
TH
-
2
2
8
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
0.
9
8
8
4
AL
P
1
7
5
Sa
m
p
l
e
0.
5
4
(1
.
8
)
1.
0
Sa
m
p
l
e

U

1.
7
1
E
-
0
8
8.
8
9
E
-
0
6
1.
7
E
-
0
6
5.
1
9
E
-
0
8
34
%
5.
0
E
-
0
7
TH
-
2
3
0
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
0.
9
8
8
4
AL
P
1
7
5
Sa
m
p
l
e
(1
7
1
.
5
)
(1
0
.
3
)
1.
0
Sa
m
p
l
e

3.
0
0
E
-
1
5
1.
6
4
E
-
0
8
1.
1
3
E
-
0
6
2.
8
E
-
0
7
5.
1
9
E
-
0
8
34
%
1.
8
E
-
0
7
TH
-
2
3
2
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
0.
9
8
8
4
AL
P
1
7
5
Sa
m
p
l
e
(2
1
.
7
)
(8
.
2
)
1.
0
Sa
m
p
l
e

1.
6
4
E
-
0
8
03
5
5
3
8
5
Ba
t
c
h
:
MC
F
R
J
1
A
E
Wo
r
k

O
r
d
e
r
:
9M
C
F
R
J
1
0
Re
p
o
r
t

D
B

I
D
:
FF
S
R
1.
0
1
E
-
0
3
2.
2
E
-
0
4
3.
0
9
E
-
0
5
84
%
1.
6
E
-
0
4
U-
2
3
4
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
1

p
0.
0
0
1
1
2
AL
P
2
1
1
Sa
m
p
l
e
(3
2
.
6
)
(9
.
)
1.
0
Sa
m
p
l
e

9.
0
0
E
-
1
5
7.
0
5
E
-
0
6
3.
6
1
E
-
0
5
3.
1
E
-
0
5
2.
8
3
E
-
0
5
84
%
3.
0
E
-
0
5
U-
2
3
5
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
1

p
0.
0
0
1
1
2
AL
P
2
1
1
Sa
m
p
l
e
(1
.
3
)
(2
.
3
)
1.
0
Sa
m
p
l
e

9.
0
0
E
-
1
5
5.
7
6
E
-
0
6
8.
7
7
E
-
0
4
2.
0
E
-
0
4
3.
0
9
E
-
0
5
84
%
1.
5
E
-
0
4
U-
2
3
8
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
1

p
0.
0
0
1
1
2
AL
P
2
1
1
Sa
m
p
l
e
(2
8
.
4
)
(8
.
7
)
1.
0
Sa
m
p
l
e

9.
0
0
E
-
1
5
7.
0
5
E
-
0
6
Ra
t
i
o

U
-
2
3
4
/
2
3
8

=

1
.
1
Te
s
t
A
m
e
r
i
c
a
J
Q
u
a
l

-

N
o

U
|
<

q
u
a
l
i
f
i
e
r

h
a
s

b
e
e
n

a
s
s
i
g
n
e
d

a
n
d

t
h
e

r
e
s
u
l
t

i
s

b
e
l
o
w

t
h
e

R
e
p
o
r
t
i
n
g

L
i
m
i
t
,

R
L

(
C
R
D
L
)

o
r

R
e
p
o
r
t

V
a
l
u
e

i
s

E
s
t
i
m
a
t
e
d
.
U
Q
u
a
l

-

A
n
a
l
y
z
e
d

f
o
r

b
u
t

n
o
t

d
e
t
e
c
t
e
d

a
b
o
v
e

l
i
m
i
t
i
n
g

c
r
i
t
e
r
i
a
.

L
i
m
i
t

c
r
i
t
e
r
i
a

i
s

l
e
s
s

t
h
a
n

t
h
e

M
d
c
/
M
d
a
,

T
o
t
a
l

U
n
c
e
r
t
,
C
R
D
L
,

o
r
n
o
t

i
d
e
n
t
i
f
i
e
d

b
y

g
a
m
m
a

s
c
a
n

s
o
f
t
w
a
r
e
.
MD
C
|
M
D
A
,
L
c

-

D
e
t
e
c
t
i
o
n
,

D
e
c
i
s
i
o
n

L
e
v
e
l

b
a
s
e
d

o
n

i
n
s
t
r
u
m
e
n
t

b
a
c
k
g
r
ou
n
d

o
r

b
l
a
n
k
,

a
d
j
u
s
t
e
d

b
y

t
h
e

s
a
m
p
l
e

E
f
f
i
c
i
e
n
c
y
,

Y
i
e
l
d
,

a
n
d

V
ol
u
m
e
.
rp
t
S
T
L
R
c
h
S
a
m
p
l
e

V5
.
2
.
1
0

A
2
0
0
2
Te
s
t
A
m
e
r
i
c
a

La
b
o
r
a
t
o
r
i
e
s
,

In
c
.
11
Lo
t
-
S
a
m
p
l
e

N
o
.
:
SD
G
:
56
7
6

B
A
G
H
O
U
S
E

F
I
L
T
E
R

&

B
E
A
K
E
R
42
5
4
0
Ma
t
r
i
x
:
FI
L
T
E
R
Re
c
e
i
v
e
d

D
a
t
e
:
12
/
1
5
/
2
0
1
0

1
1
:
0
0
:
0
0

A
M
La
b

N
a
m
e
:
Cl
i
e
n
t

S
a
m
p
l
e

I
D
:
Pa
r
a
m
e
t
e
r
R
e
s
u
l
t

C
o
u
n
t
Er
r
o
r

(

s
)

To
t
a
l

Un
c
e
r
t
(

s
)
Yi
e
l
d
CR
D
L
(
R
L
)
MD
C
|
M
D
A
,
Ac
t
i
o
n

L
e
v
Rp
t

U
n
i
t
,
Lc
Re
p
o
r
t

N
o
.

:
An
a
l
y
s
i
s
,
Pr
e
p

D
a
t
e
Al
i
q
u
o
t
Si
z
e
Pr
i
m
a
r
y
D
e
t
e
c
t
o
r

Co
l
l
e
c
t
i
o
n

D
a
t
e
:
12
/
8
/
2
0
1
0

9
:
3
0
:
0
0

A
M
45
7
1
5
Rs
t
/
M
D
C
,
Rs
t
/
T
o
t
U
c
e
r
t
2
2
Te
s
t
A
m
e
r
i
c
a
J0
L
1
6
0
4
9
9
-
4
To
t
a
l

S
a
Si
z
e
Qu
a
l
CO
C

N
o
.

:
De
n
i
s
o
n

M
i
n
e

2
0
1
0

4
t
h

Q
u
a
r
t
e
r
Or
d
e
r
e
d

b
y

C
l
i
e
n
t

S
a
m
p
l
e

I
D
,

B
a
t
c
h

N
o
.
SA
M
P
L
E

R
E
S
U
L
T
S
04
-
F
e
b
-
1
1
Da
t
e
:
FO
R
M

I
8
No
.

o
f

R
e
s
u
l
t
s
:

C
o
m
m
e
n
t
s
:

Te
s
t
A
m
e
r
i
c
a
J
Q
u
a
l

-

N
o

U
|
<

q
u
a
l
i
f
i
e
r

h
a
s

b
e
e
n

a
s
s
i
g
n
e
d

a
n
d

t
h
e

r
e
s
u
l
t

i
s

b
e
l
o
w

t
h
e

R
e
p
o
r
t
i
n
g

L
i
m
i
t
,

R
L

(
C
R
D
L
)

o
r

R
e
p
o
r
t

V
a
l
u
e

i
s

E
s
t
i
m
a
t
e
d
.
U
Q
u
a
l

-

A
n
a
l
y
z
e
d

f
o
r

b
u
t

n
o
t

d
e
t
e
c
t
e
d

a
b
o
v
e

l
i
m
i
t
i
n
g

c
r
i
t
e
r
i
a
.

L
i
m
i
t

c
r
i
t
e
r
i
a

i
s

l
e
s
s

t
h
a
n

t
h
e

M
d
c
/
M
d
a
,

T
o
t
a
l

U
n
c
e
r
t
,
C
R
D
L
,

o
r
n
o
t

i
d
e
n
t
i
f
i
e
d

b
y

g
a
m
m
a

s
c
a
n

s
o
f
t
w
a
r
e
.
MD
C
|
M
D
A
,
L
c

-

D
e
t
e
c
t
i
o
n
,

D
e
c
i
s
i
o
n

L
e
v
e
l

b
a
s
e
d

o
n

i
n
s
t
r
u
m
e
n
t

b
a
c
k
g
r
ou
n
d

o
r

b
l
a
n
k
,

a
d
j
u
s
t
e
d

b
y

t
h
e

s
a
m
p
l
e

E
f
f
i
c
i
e
n
c
y
,

Y
i
e
l
d
,

a
n
d

V
ol
u
m
e
.
rp
t
S
T
L
R
c
h
S
a
m
p
l
e

V5
.
2
.
1
0

A
2
0
0
2
Te
s
t
A
m
e
r
i
c
a

La
b
o
r
a
t
o
r
i
e
s
,

In
c
.
12
Lo
t
-
S
a
m
p
l
e

N
o
.
:
SD
G
:
56
7
7
,
5
6
7
8

R
1

N
Y
C

F
I
L
T
E
R
S

&

B
E
A
42
5
4
0
Ma
t
r
i
x
:
FI
L
T
E
R
Re
c
e
i
v
e
d

D
a
t
e
:
12
/
1
5
/
2
0
1
0

1
1
:
0
0
:
0
0

A
M
La
b

N
a
m
e
:
Cl
i
e
n
t

S
a
m
p
l
e

I
D
:
Pa
r
a
m
e
t
e
r
R
e
s
u
l
t

C
o
u
n
t
Er
r
o
r

(

s
)

To
t
a
l

Un
c
e
r
t
(

s
)
Yi
e
l
d
CR
D
L
(
R
L
)
MD
C
|
M
D
A
,
Ac
t
i
o
n

L
e
v
Rp
t

U
n
i
t
,
Lc
Re
p
o
r
t

N
o
.

:
An
a
l
y
s
i
s
,
Pr
e
p

D
a
t
e
Al
i
q
u
o
t
Si
z
e
Pr
i
m
a
r
y
D
e
t
e
c
t
o
r

Co
l
l
e
c
t
i
o
n

D
a
t
e
:
12
/
7
/
2
0
1
0

8
:
0
0
:
0
0

A
M
45
7
1
5
Rs
t
/
M
D
C
,
Rs
t
/
T
o
t
U
c
e
r
t
2
2
Te
s
t
A
m
e
r
i
c
a
J0
L
1
6
0
4
9
9
-
2
To
t
a
l

S
a
Si
z
e
Qu
a
l
CO
C

N
o
.

:
De
n
i
s
o
n

M
i
n
e

2
0
1
0

4
t
h

Q
u
a
r
t
e
r
Or
d
e
r
e
d

b
y

C
l
i
e
n
t

S
a
m
p
l
e

I
D
,

B
a
t
c
h

N
o
.
SA
M
P
L
E

R
E
S
U
L
T
S
04
-
F
e
b
-
1
1
Da
t
e
:
FO
R
M

I
03
5
5
3
8
2
Ba
t
c
h
:
MC
F
P
5
1
A
D
Wo
r
k

O
r
d
e
r
:
9M
C
F
P
5
1
0
Re
p
o
r
t

D
B

I
D
:
RI
C
H
R
C
5
0
1
1
2.
2
1
E
-
0
5
3.
9
E
-
0
6
8.
3
7
E
-
0
7
52
%
9.
9
E
-
0
7
Pb
-
2
1
0
UC
I
/
S
A
1/
2
7
/
1
1

0
8
:
5
1

a
0.
9
8
8
7
7
GP
C
3
1
B
Sa
m
p
l
e
(2
6
.
4
)
(1
1
.
2
)
1.
0
Sa
m
p
l
e

6.
0
0
E
-
1
4
4.
0
7
E
-
0
7
03
5
5
3
8
3
Ba
t
c
h
:
MC
F
P
5
1
A
C
Wo
r
k

O
r
d
e
r
:
9M
C
F
P
5
1
0
Re
p
o
r
t

D
B

I
D
:
RL
-
R
A
-
0
0
1
5.
9
2
E
-
0
7
5.
3
E
-
0
7
9.
2
1
E
-
0
7
17
%
5.
2
E
-
0
7
RA
-
2
2
6
1/
2
5
/
1
1

0
3
:
1
4

p
0.
9
8
8
8
AS
C
2
H
A
Sa
m
p
l
e
0.
6
4
(2
.
2
)
1.
0
Sa
m
p
l
e

U

9.
0
0
E
-
1
4
4.
1
3
E
-
0
7
03
5
5
3
8
4
Ba
t
c
h
:
MC
F
P
5
1
A
A
Wo
r
k

O
r
d
e
r
:
9M
C
F
P
5
1
0
Re
p
o
r
t

D
B

I
D
:
RI
C
H
R
C
5
0
1
1
1.
0
9
E
-
0
7
7.
5
E
-
0
8
7.
2
8
E
-
0
8
26
%
7.
1
E
-
0
8
TH
-
2
2
8
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
0.
9
8
8
7
7
AL
P
1
7
3
Sa
m
p
l
e
(1
.
5
)
(2
.
9
)
1.
0
Sa
m
p
l
e

2.
3
0
E
-
0
8
1.
3
0
E
-
0
4
2.
6
E
-
0
5
1.
0
2
E
-
0
7
26
%
2.
2
E
-
0
6
TH
-
2
3
0
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
0.
9
8
8
7
7
AL
P
1
7
3
Sa
m
p
l
e
(1
2
6
7
.
5
)
(9
.
9
)
1.
0
Sa
m
p
l
e

3.
0
0
E
-
1
5
3.
8
3
E
-
0
8
9.
8
5
E
-
0
6
2.
1
E
-
0
6
6.
9
9
E
-
0
8
26
%
6.
1
E
-
0
7
TH
-
2
3
2
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
0.
9
8
8
7
7
AL
P
1
7
3
Sa
m
p
l
e
(1
4
0
.
9
)
(9
.
5
)
1.
0
Sa
m
p
l
e

2.
2
1
E
-
0
8
03
5
5
3
8
5
Ba
t
c
h
:
MC
F
P
5
1
A
E
Wo
r
k

O
r
d
e
r
:
9M
C
F
P
5
1
0
Re
p
o
r
t

D
B

I
D
:
FF
S
R
4.
5
6
E
-
0
2
1.
3
E
-
0
2
3.
7
2
E
-
0
5
92
%
1.
0
E
-
0
3
U-
2
3
4
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
1

p
0.
0
0
1
0
7
AL
P
6
Sa
m
p
l
e
(1
2
2
5
.
3
)
(6
.
8
)
1.
0
Sa
m
p
l
e

9.
0
0
E
-
1
5
1.
0
6
E
-
0
5
2.
8
0
E
-
0
3
8.
6
E
-
0
4
2.
8
2
E
-
0
5
92
%
2.
6
E
-
0
4
U-
2
3
5
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
1

p
0.
0
0
1
0
7
AL
P
6
Sa
m
p
l
e
(9
9
.
3
)
(6
.
5
)
1.
0
Sa
m
p
l
e

9.
0
0
E
-
1
5
6.
1
3
E
-
0
6
4.
7
4
E
-
0
2
1.
4
E
-
0
2
3.
7
2
E
-
0
5
92
%
1.
1
E
-
0
3
U-
2
3
8
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
1

p
0.
0
0
1
0
7
AL
P
6
Sa
m
p
l
e
(1
2
7
3
.
1
)
(6
.
8
)
1.
0
Sa
m
p
l
e

9.
0
0
E
-
1
5
1.
0
6
E
-
0
5
Ra
t
i
o

U
-
2
3
4
/
2
3
8

=

1
.
0
Te
s
t
A
m
e
r
i
c
a
J
Q
u
a
l

-

N
o

U
|
<

q
u
a
l
i
f
i
e
r

h
a
s

b
e
e
n

a
s
s
i
g
n
e
d

a
n
d

t
h
e

r
e
s
u
l
t

i
s

b
e
l
o
w

t
h
e

R
e
p
o
r
t
i
n
g

L
i
m
i
t
,

R
L

(
C
R
D
L
)

o
r

R
e
p
o
r
t

V
a
l
u
e

i
s

E
s
t
i
m
a
t
e
d
.
U
Q
u
a
l

-

A
n
a
l
y
z
e
d

f
o
r

b
u
t

n
o
t

d
e
t
e
c
t
e
d

a
b
o
v
e

l
i
m
i
t
i
n
g

c
r
i
t
e
r
i
a
.

L
i
m
i
t

c
r
i
t
e
r
i
a

i
s

l
e
s
s

t
h
a
n

t
h
e

M
d
c
/
M
d
a
,

T
o
t
a
l

U
n
c
e
r
t
,
C
R
D
L
,

o
r
n
o
t

i
d
e
n
t
i
f
i
e
d

b
y

g
a
m
m
a

s
c
a
n

s
o
f
t
w
a
r
e
.
MD
C
|
M
D
A
,
L
c

-

D
e
t
e
c
t
i
o
n
,

D
e
c
i
s
i
o
n

L
e
v
e
l

b
a
s
e
d

o
n

i
n
s
t
r
u
m
e
n
t

b
a
c
k
g
r
ou
n
d

o
r

b
l
a
n
k
,

a
d
j
u
s
t
e
d

b
y

t
h
e

s
a
m
p
l
e

E
f
f
i
c
i
e
n
c
y
,

Y
i
e
l
d
,

a
n
d

V
ol
u
m
e
.
rp
t
S
T
L
R
c
h
S
a
m
p
l
e

V5
.
2
.
1
0

A
2
0
0
2
Te
s
t
A
m
e
r
i
c
a

La
b
o
r
a
t
o
r
i
e
s
,

In
c
.
13
Lo
t
-
S
a
m
p
l
e

N
o
.
:
SD
G
:
56
7
7
,
5
6
7
8

R
1

N
Y
C

F
I
L
T
E
R
S

&

B
E
A
42
5
4
0
Ma
t
r
i
x
:
FI
L
T
E
R
Re
c
e
i
v
e
d

D
a
t
e
:
12
/
1
5
/
2
0
1
0

1
1
:
0
0
:
0
0

A
M
La
b

N
a
m
e
:
Cl
i
e
n
t

S
a
m
p
l
e

I
D
:
Pa
r
a
m
e
t
e
r
R
e
s
u
l
t

C
o
u
n
t
Er
r
o
r

(

s
)

To
t
a
l

Un
c
e
r
t
(

s
)
Yi
e
l
d
CR
D
L
(
R
L
)
MD
C
|
M
D
A
,
Ac
t
i
o
n

L
e
v
Rp
t

U
n
i
t
,
Lc
Re
p
o
r
t

N
o
.

:
An
a
l
y
s
i
s
,
Pr
e
p

D
a
t
e
Al
i
q
u
o
t
Si
z
e
Pr
i
m
a
r
y
D
e
t
e
c
t
o
r

Co
l
l
e
c
t
i
o
n

D
a
t
e
:
12
/
7
/
2
0
1
0

8
:
0
0
:
0
0

A
M
45
7
1
5
Rs
t
/
M
D
C
,
Rs
t
/
T
o
t
U
c
e
r
t
2
2
Te
s
t
A
m
e
r
i
c
a
J0
L
1
6
0
4
9
9
-
2
To
t
a
l

S
a
Si
z
e
Qu
a
l
CO
C

N
o
.

:
De
n
i
s
o
n

M
i
n
e

2
0
1
0

4
t
h

Q
u
a
r
t
e
r
Or
d
e
r
e
d

b
y

C
l
i
e
n
t

S
a
m
p
l
e

I
D
,

B
a
t
c
h

N
o
.
SA
M
P
L
E

R
E
S
U
L
T
S
04
-
F
e
b
-
1
1
Da
t
e
:
FO
R
M

I
8
No
.

o
f

R
e
s
u
l
t
s
:

C
o
m
m
e
n
t
s
:

Te
s
t
A
m
e
r
i
c
a
J
Q
u
a
l

-

N
o

U
|
<

q
u
a
l
i
f
i
e
r

h
a
s

b
e
e
n

a
s
s
i
g
n
e
d

a
n
d

t
h
e

r
e
s
u
l
t

i
s

b
e
l
o
w

t
h
e

R
e
p
o
r
t
i
n
g

L
i
m
i
t
,

R
L

(
C
R
D
L
)

o
r

R
e
p
o
r
t

V
a
l
u
e

i
s

E
s
t
i
m
a
t
e
d
.
U
Q
u
a
l

-

A
n
a
l
y
z
e
d

f
o
r

b
u
t

n
o
t

d
e
t
e
c
t
e
d

a
b
o
v
e

l
i
m
i
t
i
n
g

c
r
i
t
e
r
i
a
.

L
i
m
i
t

c
r
i
t
e
r
i
a

i
s

l
e
s
s

t
h
a
n

t
h
e

M
d
c
/
M
d
a
,

T
o
t
a
l

U
n
c
e
r
t
,
C
R
D
L
,

o
r
n
o
t

i
d
e
n
t
i
f
i
e
d

b
y

g
a
m
m
a

s
c
a
n

s
o
f
t
w
a
r
e
.
MD
C
|
M
D
A
,
L
c

-

D
e
t
e
c
t
i
o
n
,

D
e
c
i
s
i
o
n

L
e
v
e
l

b
a
s
e
d

o
n

i
n
s
t
r
u
m
e
n
t

b
a
c
k
g
r
ou
n
d

o
r

b
l
a
n
k
,

a
d
j
u
s
t
e
d

b
y

t
h
e

s
a
m
p
l
e

E
f
f
i
c
i
e
n
c
y
,

Y
i
e
l
d
,

a
n
d

V
ol
u
m
e
.
rp
t
S
T
L
R
c
h
S
a
m
p
l
e

V5
.
2
.
1
0

A
2
0
0
2
Te
s
t
A
m
e
r
i
c
a

La
b
o
r
a
t
o
r
i
e
s
,

In
c
.
14
Lo
t
-
S
a
m
p
l
e

N
o
.
:
SD
G
:
56
7
9

R
2

N
Y
C

F
I
L
T
E
R
S

&

B
E
A
K
E
R
S
42
5
4
0
Ma
t
r
i
x
:
FI
L
T
E
R
Re
c
e
i
v
e
d

D
a
t
e
:
12
/
1
5
/
2
0
1
0

1
1
:
0
0
:
0
0

A
M
La
b

N
a
m
e
:
Cl
i
e
n
t

S
a
m
p
l
e

I
D
:
Pa
r
a
m
e
t
e
r
R
e
s
u
l
t

C
o
u
n
t
Er
r
o
r

(

s
)

To
t
a
l

Un
c
e
r
t
(

s
)
Yi
e
l
d
CR
D
L
(
R
L
)
MD
C
|
M
D
A
,
Ac
t
i
o
n

L
e
v
Rp
t

U
n
i
t
,
Lc
Re
p
o
r
t

N
o
.

:
An
a
l
y
s
i
s
,
Pr
e
p

D
a
t
e
Al
i
q
u
o
t
Si
z
e
Pr
i
m
a
r
y
D
e
t
e
c
t
o
r

Co
l
l
e
c
t
i
o
n

D
a
t
e
:
12
/
8
/
2
0
1
0

8
:
0
0
:
0
0

A
M
45
7
1
5
Rs
t
/
M
D
C
,
Rs
t
/
T
o
t
U
c
e
r
t
2
2
Te
s
t
A
m
e
r
i
c
a
J0
L
1
6
0
4
9
9
-
3
To
t
a
l

S
a
Si
z
e
Qu
a
l
CO
C

N
o
.

:
De
n
i
s
o
n

M
i
n
e

2
0
1
0

4
t
h

Q
u
a
r
t
e
r
Or
d
e
r
e
d

b
y

C
l
i
e
n
t

S
a
m
p
l
e

I
D
,

B
a
t
c
h

N
o
.
SA
M
P
L
E

R
E
S
U
L
T
S
04
-
F
e
b
-
1
1
Da
t
e
:
FO
R
M

I
03
5
5
3
8
2
Ba
t
c
h
:
MC
F
Q
7
1
A
D
Wo
r
k

O
r
d
e
r
:
9M
C
F
Q
7
1
0
Re
p
o
r
t

D
B

I
D
:
RI
C
H
R
C
5
0
1
1
1.
8
7
E
-
0
5
3.
2
E
-
0
6
4.
7
0
E
-
0
7
86
%
6.
4
E
-
0
7
Pb
-
2
1
0
UC
I
/
S
A
1/
2
7
/
1
1

0
8
:
5
1

a
0.
9
8
8
9
9
GP
C
3
1
C
Sa
m
p
l
e
(3
9
.
8
)
(1
1
.
7
)
1.
0
Sa
m
p
l
e

6.
0
0
E
-
1
4
2.
2
9
E
-
0
7
03
5
5
3
8
3
Ba
t
c
h
:
MC
F
Q
7
1
A
C
Wo
r
k

O
r
d
e
r
:
9M
C
F
Q
7
1
0
Re
p
o
r
t

D
B

I
D
:
RL
-
R
A
-
0
0
1
1.
4
9
E
-
0
6
6.
6
E
-
0
7
7.
1
0
E
-
0
7
14
%
5.
9
E
-
0
7
RA
-
2
2
6
1/
2
5
/
1
1

0
3
:
1
3

p
0.
9
8
9
AS
C
3
M
A
Sa
m
p
l
e
(2
.
1
)
(4
.
5
)
1.
0
Sa
m
p
l
e

9.
0
0
E
-
1
4
2.
9
7
E
-
0
7
03
5
5
3
8
4
Ba
t
c
h
:
MC
F
Q
7
1
A
A
Wo
r
k

O
r
d
e
r
:
9M
C
F
Q
7
1
0
Re
p
o
r
t

D
B

I
D
:
RI
C
H
R
C
5
0
1
1
2.
7
3
E
-
0
8
2.
0
E
-
0
8
2.
2
3
E
-
0
8
88
%
1.
9
E
-
0
8
TH
-
2
2
8
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
0.
9
8
8
9
9
AL
P
1
7
4
Sa
m
p
l
e
(1
.
2
)
(2
.
8
)
1.
0
Sa
m
p
l
e

7.
0
5
E
-
0
9
5.
3
8
E
-
0
5
9.
0
E
-
0
6
2.
1
4
E
-
0
8
88
%
7.
9
E
-
0
7
TH
-
2
3
0
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
0.
9
8
8
9
9
AL
P
1
7
4
Sa
m
p
l
e
(2
5
1
2
.
2
)
(1
2
.
)
1.
0
Sa
m
p
l
e

3.
0
0
E
-
1
5
6.
7
7
E
-
0
9
7.
3
4
E
-
0
7
1.
5
E
-
0
7
2.
1
4
E
-
0
8
88
%
9.
3
E
-
0
8
TH
-
2
3
2
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
0.
9
8
8
9
9
AL
P
1
7
4
Sa
m
p
l
e
(3
4
.
2
)
(9
.
6
)
1.
0
Sa
m
p
l
e

6.
7
7
E
-
0
9
03
5
5
3
8
5
Ba
t
c
h
:
MC
F
Q
7
1
A
E
Wo
r
k

O
r
d
e
r
:
9M
C
F
Q
7
1
0
Re
p
o
r
t

D
B

I
D
:
FF
S
R
4.
1
8
E
-
0
2
6.
6
E
-
0
3
4.
6
2
E
-
0
5
95
%
1.
1
E
-
0
3
U-
2
3
4
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
1

p
0.
0
0
0
8
9
AL
P
7
Sa
m
p
l
e
(9
0
3
.
7
)
(1
2
.
7
)
1.
0
Sa
m
p
l
e

9.
0
0
E
-
1
5
1.
3
2
E
-
0
5
1.
3
9
E
-
0
3
3.
0
E
-
0
4
3.
5
1
E
-
0
5
95
%
2.
0
E
-
0
4
U-
2
3
5
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
1

p
0.
0
0
0
8
9
AL
P
7
Sa
m
p
l
e
(3
9
.
7
)
(9
.
4
)
1.
0
Sa
m
p
l
e

9.
0
0
E
-
1
5
7.
6
2
E
-
0
6
4.
2
6
E
-
0
2
6.
7
E
-
0
3
6.
5
5
E
-
0
5
95
%
1.
1
E
-
0
3
U-
2
3
8
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
1

p
0.
0
0
0
8
9
AL
P
7
Sa
m
p
l
e
(6
5
0
.
6
)
(1
2
.
7
)
1.
0
Sa
m
p
l
e

9.
0
0
E
-
1
5
2.
2
9
E
-
0
5
Ra
t
i
o

U
-
2
3
4
/
2
3
8

=

1
.
0
Te
s
t
A
m
e
r
i
c
a
J
Q
u
a
l

-

N
o

U
|
<

q
u
a
l
i
f
i
e
r

h
a
s

b
e
e
n

a
s
s
i
g
n
e
d

a
n
d

t
h
e

r
e
s
u
l
t

i
s

b
e
l
o
w

t
h
e

R
e
p
o
r
t
i
n
g

L
i
m
i
t
,

R
L

(
C
R
D
L
)

o
r

R
e
p
o
r
t

V
a
l
u
e

i
s

E
s
t
i
m
a
t
e
d
.
U
Q
u
a
l

-

A
n
a
l
y
z
e
d

f
o
r

b
u
t

n
o
t

d
e
t
e
c
t
e
d

a
b
o
v
e

l
i
m
i
t
i
n
g

c
r
i
t
e
r
i
a
.

L
i
m
i
t

c
r
i
t
e
r
i
a

i
s

l
e
s
s

t
h
a
n

t
h
e

M
d
c
/
M
d
a
,

T
o
t
a
l

U
n
c
e
r
t
,
C
R
D
L
,

o
r
n
o
t

i
d
e
n
t
i
f
i
e
d

b
y

g
a
m
m
a

s
c
a
n

s
o
f
t
w
a
r
e
.
MD
C
|
M
D
A
,
L
c

-

D
e
t
e
c
t
i
o
n
,

D
e
c
i
s
i
o
n

L
e
v
e
l

b
a
s
e
d

o
n

i
n
s
t
r
u
m
e
n
t

b
a
c
k
g
r
ou
n
d

o
r

b
l
a
n
k
,

a
d
j
u
s
t
e
d

b
y

t
h
e

s
a
m
p
l
e

E
f
f
i
c
i
e
n
c
y
,

Y
i
e
l
d
,

a
n
d

V
ol
u
m
e
.
rp
t
S
T
L
R
c
h
S
a
m
p
l
e

V5
.
2
.
1
0

A
2
0
0
2
Te
s
t
A
m
e
r
i
c
a

La
b
o
r
a
t
o
r
i
e
s
,

In
c
.
15
Lo
t
-
S
a
m
p
l
e

N
o
.
:
SD
G
:
56
7
9

R
2

N
Y
C

F
I
L
T
E
R
S

&

B
E
A
K
E
R
S
42
5
4
0
Ma
t
r
i
x
:
FI
L
T
E
R
Re
c
e
i
v
e
d

D
a
t
e
:
12
/
1
5
/
2
0
1
0

1
1
:
0
0
:
0
0

A
M
La
b

N
a
m
e
:
Cl
i
e
n
t

S
a
m
p
l
e

I
D
:
Pa
r
a
m
e
t
e
r
R
e
s
u
l
t

C
o
u
n
t
Er
r
o
r

(

s
)

To
t
a
l

Un
c
e
r
t
(

s
)
Yi
e
l
d
CR
D
L
(
R
L
)
MD
C
|
M
D
A
,
Ac
t
i
o
n

L
e
v
Rp
t

U
n
i
t
,
Lc
Re
p
o
r
t

N
o
.

:
An
a
l
y
s
i
s
,
Pr
e
p

D
a
t
e
Al
i
q
u
o
t
Si
z
e
Pr
i
m
a
r
y
D
e
t
e
c
t
o
r

Co
l
l
e
c
t
i
o
n

D
a
t
e
:
12
/
8
/
2
0
1
0

8
:
0
0
:
0
0

A
M
45
7
1
5
Rs
t
/
M
D
C
,
Rs
t
/
T
o
t
U
c
e
r
t
2
2
Te
s
t
A
m
e
r
i
c
a
J0
L
1
6
0
4
9
9
-
3
To
t
a
l

S
a
Si
z
e
Qu
a
l
CO
C

N
o
.

:
De
n
i
s
o
n

M
i
n
e

2
0
1
0

4
t
h

Q
u
a
r
t
e
r
Or
d
e
r
e
d

b
y

C
l
i
e
n
t

S
a
m
p
l
e

I
D
,

B
a
t
c
h

N
o
.
SA
M
P
L
E

R
E
S
U
L
T
S
04
-
F
e
b
-
1
1
Da
t
e
:
FO
R
M

I
8
No
.

o
f

R
e
s
u
l
t
s
:

C
o
m
m
e
n
t
s
:

Te
s
t
A
m
e
r
i
c
a
J
Q
u
a
l

-

N
o

U
|
<

q
u
a
l
i
f
i
e
r

h
a
s

b
e
e
n

a
s
s
i
g
n
e
d

a
n
d

t
h
e

r
e
s
u
l
t

i
s

b
e
l
o
w

t
h
e

R
e
p
o
r
t
i
n
g

L
i
m
i
t
,

R
L

(
C
R
D
L
)

o
r

R
e
p
o
r
t

V
a
l
u
e

i
s

E
s
t
i
m
a
t
e
d
.
U
Q
u
a
l

-

A
n
a
l
y
z
e
d

f
o
r

b
u
t

n
o
t

d
e
t
e
c
t
e
d

a
b
o
v
e

l
i
m
i
t
i
n
g

c
r
i
t
e
r
i
a
.

L
i
m
i
t

c
r
i
t
e
r
i
a

i
s

l
e
s
s

t
h
a
n

t
h
e

M
d
c
/
M
d
a
,

T
o
t
a
l

U
n
c
e
r
t
,
C
R
D
L
,

o
r
n
o
t

i
d
e
n
t
i
f
i
e
d

b
y

g
a
m
m
a

s
c
a
n

s
o
f
t
w
a
r
e
.
MD
C
|
M
D
A
,
L
c

-

D
e
t
e
c
t
i
o
n
,

D
e
c
i
s
i
o
n

L
e
v
e
l

b
a
s
e
d

o
n

i
n
s
t
r
u
m
e
n
t

b
a
c
k
g
r
ou
n
d

o
r

b
l
a
n
k
,

a
d
j
u
s
t
e
d

b
y

t
h
e

s
a
m
p
l
e

E
f
f
i
c
i
e
n
c
y
,

Y
i
e
l
d
,

a
n
d

V
ol
u
m
e
.
rp
t
S
T
L
R
c
h
S
a
m
p
l
e

V5
.
2
.
1
0

A
2
0
0
2
Te
s
t
A
m
e
r
i
c
a

La
b
o
r
a
t
o
r
i
e
s
,

In
c
.
16
BL
A
N
K

R
E
S
U
L
T
S
04
-
F
e
b
-
1
1
Da
t
e
:
FO
R
M

I
I
SD
G
:
42
5
4
0
Ma
t
r
i
x
:
FI
L
T
E
R
La
b

N
a
m
e
:
Pa
r
a
m
e
t
e
r
R
e
s
u
l
t

Co
u
n
t
Er
r
o
r

(

s
)

To
t
a
l

Un
c
e
r
t
(

s
)
Yi
e
l
d
MD
C
|
M
D
A
,
Lc
Rp
t

U
n
i
t
,
CR
D
L
Re
p
o
r
t

N
o
.

:
An
a
l
y
s
i
s
,
Pr
e
p

D
a
t
e
Al
i
q
u
o
t
Si
z
e
Pr
i
m
a
r
y
De
t
e
c
t
o
r

45
7
1
5
Rs
t
/
M
D
C
,
Rs
t
/
T
o
t
U
c
e
r
t
2
2
Te
s
t
A
m
e
r
i
c
a
To
t
a
l

S
a
Si
z
e
Qu
a
l
03
5
5
3
8
2
Ba
t
c
h
:
MC
M
4
5
1
A
A
Wo
r
k

O
r
d
e
r
:
MC
M
4
5
1
A
B
Re
p
o
r
t

D
B

I
D
:
RI
C
H
R
C
5
0
1
1
3.
9
9
E
-
0
7
3.
5
E
-
0
7

5
.
9
6
E
-
0
7
72
%
3.
5
E
-
0
7
Pb
-
2
1
0
UC
I
/
S
A
1/
2
7
/
1
1

0
8
:
5
1

a
15
6
.
3
8
GP
C
3
2
A
Sa
m
p
l
e
0.
6
7
(2
.
2
)
15
6
.
3
8
Sa
m
p
l
e

U

2.
9
0
E
-
0
7
6.
0
0
E
-
1
4
03
5
5
3
8
3
Ba
t
c
h
:
MC
M
4
9
1
A
A
Wo
r
k

O
r
d
e
r
:
MC
M
4
9
1
A
B
Re
p
o
r
t

D
B

I
D
:
RL
-
R
A
-
0
0
1
6.
0
6
E
-
0
8
8.
4
E
-
0
8

1
.
5
6
E
-
0
7
99
%
8.
3
E
-
0
8
RA
-
2
2
6
1/
2
5
/
1
1

0
3
:
1
2

p
15
6
.
3
8
AS
C
5
H
A
Sa
m
p
l
e
0.
3
9
(1
.
4
)
15
6
.
3
8
Sa
m
p
l
e

U

7.
0
4
E
-
0
8
9.
0
0
E
-
1
4
03
5
5
3
8
5
Ba
t
c
h
:
MC
M
5
V
1
A
A
Wo
r
k

O
r
d
e
r
:
MC
M
5
V
1
A
B
Re
p
o
r
t

D
B

I
D
:
FF
S
R
3.
9
9
E
-
0
8
9.
6
E
-
0
8

2
.
1
7
E
-
0
7
92
%
9.
6
E
-
0
8
U-
2
3
4
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
2

p
0.
1
5
AL
P
2
1
2
Sa
m
p
l
e
0.
1
8
0.
8
3
1.
0
Sa
m
p
l
e

U

4.
4
2
E
-
0
8
9.
0
0
E
-
1
5
-7
.
6
0
E
-
0
9
9.
6
E
-
0
8

2
.
1
7
E
-
0
7
92
%
9.
6
E
-
0
8
U-
2
3
5
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
2

p
0.
1
5
AL
P
2
1
2
Sa
m
p
l
e
-0
.
0
4
-0
.
1
6
1.
0
Sa
m
p
l
e

U

4.
4
2
E
-
0
8
9.
0
0
E
-
1
5
-7
.
6
0
E
-
0
9
9.
6
E
-
0
8

2
.
1
7
E
-
0
7
92
%
9.
6
E
-
0
8
U-
2
3
8
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
2

p
0.
1
5
AL
P
2
1
2
Sa
m
p
l
e
-0
.
0
4
-0
.
1
6
1.
0
Sa
m
p
l
e

U

4.
4
2
E
-
0
8
9.
0
0
E
-
1
5
Ra
t
i
o

U
-
2
3
4
/
2
3
8

=

-
5
.
2
03
5
5
3
8
4
Ba
t
c
h
:
MC
M
5
K
1
A
A
Wo
r
k

O
r
d
e
r
:
MC
M
5
K
1
A
B
Re
p
o
r
t

D
B

I
D
:
RI
C
H
R
C
5
0
1
1
-6
.
2
5
E
-
0
9
1.
8
E
-
0
8

4
.
6
0
E
-
0
8
34
%
1.
8
E
-
0
8
TH
-
2
2
8
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
1.
0
AL
P
1
7
6
Sa
m
p
l
e
-0
.
1
4
-0
.
7
1
1.
0
Sa
m
p
l
e

U

1.
4
5
E
-
0
8
4.
0
0
E
-
0
8

4
.
5
E
-
0
8

6
.
8
6
E
-
0
8

3
4
%
4.
4
E
-
0
8
TH
-
2
3
0
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
1.
0
AL
P
1
7
6
Sa
m
p
l
e
0.
5
8
(1
.
8
)
1.
0
Sa
m
p
l
e

U

2.
6
6
E
-
0
8
3.
0
0
E
-
1
5
1.
1
4
E
-
0
8
2.
3
E
-
0
8

4
.
2
0
E
-
0
8
34
%
2.
3
E
-
0
8
TH
-
2
3
2
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
1.
0
AL
P
1
7
6
Sa
m
p
l
e
0.
2
7
1.
1.
0
Sa
m
p
l
e

U

1.
3
3
E
-
0
8
8
No
.

o
f

R
e
s
u
l
t
s
:

C
o
m
m
e
n
t
s
:

Te
s
t
A
m
e
r
i
c
a
U Q
u
a
l

-

A
n
a
l
y
z
e
d

f
o
r

b
u
t

n
o
t

d
e
t
e
c
t
e
d

a
b
o
v
e

l
i
m
i
t
i
n
g

c
r
i
t
e
r
i
a
.

L
i
m
i
t

c
r
i
t
e
r
i
a

i
s

l
e
s
s

t
h
a
n

t
h
e

M
d
c
/
M
d
a
,

T
o
t
a
l

U
n
c
e
r
t
,
C
R
D
L
,

o
r
n
o
t

i
d
e
n
t
i
f
i
e
d

b
y

g
a
m
m
a

s
c
a
n

s
o
f
t
w
a
r
e
.
MD
C
|
M
D
A
,
L
c

-

D
e
t
e
c
t
i
o
n
,

D
e
c
i
s
i
o
n

L
e
v
e
l

b
a
s
e
d

o
n

i
n
s
t
r
u
m
e
n
t

b
a
c
k
g
r
ou
n
d

o
r

b
l
a
n
k
,

a
d
j
u
s
t
e
d

b
y

t
h
e

s
a
m
p
l
e

E
f
f
i
c
i
e
n
c
y
,

Y
i
e
l
d
,

a
n
d

V
ol
u
m
e
.
rp
t
S
T
L
R
c
h
B
l
a
n
k

V5
.
2
.
1
0

A
2
0
0
2
Te
s
t
A
m
e
r
i
c
a

La
b
o
r
a
t
o
r
i
e
s
,

In
c
.
17
LC
S

R
E
S
U
L
T
S
04
-
F
e
b
-
1
1
Da
t
e
:
FO
R
M

I
I
SD
G
:
42
5
4
0
Ma
t
r
i
x
:
FI
L
T
E
R
La
b

N
a
m
e
:
Pa
r
a
m
e
t
e
r

Re
s
u
l
t

Co
u
n
t
Er
r
o
r

(

s
)

To
t
a
l

Un
c
e
r
t
(

s
)
Yi
e
l
d
MD
C
|
M
D
A
Re
p
o
r
t
Un
i
t
Re
p
o
r
t

N
o
.

:
An
a
l
y
s
i
s
,
Pr
e
p

D
a
t
e
Al
i
q
u
o
t
Si
z
e
Pr
i
m
a
r
y
D
e
t
e
c
t
o
r

45
7
1
5
2
2
Te
s
t
A
m
e
r
i
c
a
Qu
a
l
Ex
p
e
c
t
e
d
Ex
p
e
c
t
e
d
Un
c
e
r
t
Re
c
o
v
e
r
y
,
Bi
a
s
03
5
5
3
8
2
Ba
t
c
h
:
MC
M
4
5
1
A
C
Wo
r
k

O
r
d
e
r
:
MC
M
4
5
1
C
S
Re
p
o
r
t

D
B

I
D
:
RI
C
H
R
C
5
0
1
1
1.
1
1
E
-
0
5
1.
9
E
-
0
6

5
.
0
4
E
-
0
7
79
%
5.
5
E
-
0
7
Pb
-
2
1
0
UC
I
/
S
A
1/
2
7
/
1
1

0
8
:
5
1

a
15
1
.
6
2
GP
C
3
2
B
Sa
m
p
l
e

9.
0
6
E
-
0
6

1
2
3
%
4.
5
6
E
-
0
7
0.
2
Re
c

L
i
m
i
t
s
:
20

1
1
5
03
5
5
3
8
3
Ba
t
c
h
:
MC
M
4
9
1
A
C
Wo
r
k

O
r
d
e
r
:
MC
M
4
9
1
C
S
Re
p
o
r
t

D
B

I
D
:
RL
-
R
A
-
0
0
1
8.
2
3
E
-
0
6
1.
7
E
-
0
6

9
.
9
0
E
-
0
8
10
0
%
4.
3
E
-
0
7
RA
-
2
2
6
1/
2
5
/
1
1

0
3
:
1
3

p
15
1
.
6
2
AS
C
6
M
A
Sa
m
p
l
e

1.
0
1
E
-
0
5

8
2
%
1.
0
4
E
-
0
7
-0
.
2
Re
c

L
i
m
i
t
s
:
70

1
3
0
03
5
5
3
8
5
Ba
t
c
h
:
MC
M
5
V
1
A
C
Wo
r
k

O
r
d
e
r
:
MC
M
5
V
1
C
S
Re
p
o
r
t

D
B

I
D
:
FF
S
R
5.
5
6
E
-
0
6
1.
3
E
-
0
6

2
.
1
0
E
-
0
7
86
%
9.
7
E
-
0
7
U-
2
3
4
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
2

p
0.
1
8
AL
P
2
1
3
Sa
m
p
l
e

5.
4
2
E
-
0
6

1
0
3
%
1.
6
8
E
-
0
7
0.
0
Re
c

L
i
m
i
t
s
:
70

1
3
0
2.
5
3
E
-
0
7
2.
1
E
-
0
7

1
.
7
0
E
-
0
7
86
%
2.
1
E
-
0
7
U-
2
3
5
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
2

p
0.
1
8
AL
P
2
1
3
Sa
m
p
l
e

2.
4
7
E
-
0
7

1
0
2
%
7.
6
7
E
-
0
9
0.
0
Re
c

L
i
m
i
t
s
:
70

1
3
0
6.
1
5
E
-
0
6

1
.
4
E
-
0
6

2
.
1
0
E
-
0
7

8
6
%
1.
0
E
-
0
6
U-
2
3
8
UC
I
/
S
A
1/
2
1
/
1
1

0
3
:
2
2

p
0.
1
8
AL
P
2
1
3
Sa
m
p
l
e

5.
6
8
E
-
0
6

1
0
8
%
1.
7
6
E
-
0
7
0.
1
Re
c

L
i
m
i
t
s
:
70

1
3
0
03
5
5
3
8
4
Ba
t
c
h
:
MC
M
5
K
1
A
C
Wo
r
k

O
r
d
e
r
:
MC
M
5
K
1
C
S
Re
p
o
r
t

D
B

I
D
:
RI
C
H
R
C
5
0
1
1
2.
4
3
E
-
0
6
4.
5
E
-
0
7

2
.
4
5
E
-
0
8
52
%
1.
8
E
-
0
7
TH
-
2
3
0
UC
I
/
S
A
1/
1
7
/
1
1

0
3
:
5
8

p
1.
0
AL
P
1
7
7
Sa
m
p
l
e

2.
2
8
E
-
0
6

1
0
7
%
4.
6
3
E
-
0
8
0.
1
Re
c

L
i
m
i
t
s
:
70

1
3
0
6
No
.

o
f

R
e
s
u
l
t
s
:

C
o
m
m
e
n
t
s
:

Te
s
t
A
m
e
r
i
c
a
Bi
a
s

-

(
R
e
s
u
l
t
/
E
x
p
e
c
t
e
d
)
-
1

a
s

d
e
f
i
n
e
d

b
y

A
N
S
I

N
1
3
.
3
0
.
rp
t
S
T
L
R
c
h
L
c
s

V5
.
2
.
1
0

A
2
0
0
2
Te
s
t
A
m
e
r
i
c
a

La
b
o
r
a
t
o
r
i
e
s
,

In
c
.
18
TestAmerica Laboratories, Inc.19
TestAmerica Laboratories, Inc.20
D
APPENDIX D
North Yellow Cake Scrubber
Figure 1. Facility Schematic Representation
Yellow Cake Dryer Baghouse
Figure 2. Facility Schematic Representation
Grizzly Baghouse
Figure 3. Facility Schematic Representation
Production Data
(Retained by Denison Mines)
Fa
c
i
l
i
t
y
:
St
a
c
k

I
d
e
n
t
i
f
i
c
a
t
i
o
n
:

Es
t
i
m
a
t
e
d

T
e
m
p
e
r
a
t
u
r
e
,

oF
Es
t
i
m
a
t
e
d

V
e
l
o
c
i
t
y
,

f
p
m
18
"
Sc
r
u
b
b
e
r

S
t
a
c
k

I
n
s
i
d
e

D
i
a
m
e
t
e
r
,

i
n
c
h
e
s
Es
t
i
m
a
t
e
d

M
o
i
s
t
u
r
e
,

p
e
r
c
e
n
t
Ye
l
l
o
w

C
a
k
e

P
r
o
c
e
s
s
i
n
g
Ty
p
e
:
Num
b
e
r

o
f

P
o
r
t
s
Pr
o
c
e
s
s
Typ
e:
Co
n
t
r
o
l

U
n
i
t
2
:

D
i
s
t
a
n
c
e

u
p
s
t
r
e
a
m

f
r
o
m

n
e
x
t

d
i
s
t
u
r
b
a
n
c
e
,

f
e
e
t
:

D
i
s
t
a
n
c
e

d
o
w
n
s
t
r
e
a
m

f
r
o
m

l
a
s
t

d
i
s
t
u
r
b
a
n
c
e
,

f
e
e
t
65
'
:

D
i
s
t
a
n
c
e

o
f

S
a
m
p
l
e

L
e
v
e
l

t
o

G
r
o
u
n
d
,

f
e
e
t
De
n
i
s
o
n

M
i
n
e
s
8-
1
5
%
10
0
-
1
2
0
1,
1
0
0
No
r
t
h

Y
e
l
l
o
w

C
a
k
e

S
c
r
u
b
b
e
r
9.
5
'
9.
5
'


Fi
g
u
r
e

1
.

F
a
c
i
l
i
t
y

S
c
h
e
m
a
t
i
c

R
e
p
r
e
s
e
n
t
a
t
i
o
n
Fa
c
i
l
i
t
y
:
St
a
c
k

I
d
e
n
t
i
f
i
c
a
t
i
o
n
:

De
n
i
s
o
n

M
i
n
e
s
0-
2
%
12
5
1,
4
0
0
Ba
g
h
o
u
s
e
57
"
45
4
"
:

D
i
s
t
a
n
c
e

u
p
s
t
r
e
a
m

f
r
o
m

n
e
x
t

d
i
s
t
u
r
b
a
n
c
e
,

i
n
c
h
e
s
:

D
i
s
t
a
n
c
e

d
o
w
n
s
t
r
e
a
m

f
r
o
m

l
a
s
t

d
i
s
t
u
r
b
a
n
c
e
,

i
n
c
h
e
s
65
'
:

D
i
s
t
a
n
c
e

o
f

S
a
m
p
l
e

L
e
v
e
l

t
o

G
r
o
u
n
d
,

f
e
e
t
Ye
l
l
o
w

C
a
k
e

P
r
o
c
e
s
s
i
n
g
Ty
p
e
:
Num
b
e
r

o
f

P
o
r
t
s
Pr
o
c
e
s
s
Typ
e:
Co
n
t
r
o
l

U
n
i
t
2
Es
t
i
m
a
t
e
d

T
e
m
p
e
r
a
t
u
r
e
,

oF
Es
t
i
m
a
t
e
d

V
e
l
o
c
i
t
y
,

f
p
m
16
"
Ba
g
h
o
u
s
e

S
t
a
c
k

I
n
s
i
d
e

D
i
a
m
e
t
e
r
,

i
n
c
h
e
s
Es
t
i
m
a
t
e
d

M
o
i
s
t
u
r
e
,

p
e
r
c
e
n
t


Fi
g
u
r
e

2
.

F
a
c
i
l
i
t
y

S
c
h
e
m
a
t
i
c

R
e
p
r
e
s
e
n
t
a
t
i
o
n
Fa
c
i
l
i
t
y
:
St
a
c
k

I
d
e
n
t
i
f
i
c
a
t
i
o
n
:

Es
t
i
m
a
t
e
d

T
e
m
p
e
r
a
t
u
r
e
,

oF
Es
t
i
m
a
t
e
d

V
e
l
o
c
i
t
y
,

f
p
m
18
.
7
5
"
Ba
g
h
o
u
s
e

S
t
a
c
k

I
n
s
i
d
e

D
i
a
m
e
t
e
r
,

i
n
c
h
e
s
Es
t
i
m
a
t
e
d

M
o
i
s
t
u
r
e
,

p
e
r
c
e
n
t
Or
e

U
n
l
o
a
d
i
n
g

a
n
d

C
o
n
v
e
y
i
n
g
Ty
p
e
:
Num
b
e
r

o
f

P
o
r
t
s
Pr
o
c
e
s
s
Typ
e:
Co
n
t
r
o
l

U
n
i
t
2
:

D
i
s
t
a
n
c
e

u
p
s
t
r
e
a
m

f
r
o
m

n
e
x
t

d
i
s
t
u
r
b
a
n
c
e
,

i
n
c
h
e
s
:

D
i
s
t
a
n
c
e

d
o
w
n
s
t
r
e
a
m

f
r
o
m

l
a
s
t

d
i
s
t
u
r
b
a
n
c
e
,

i
n
c
h
e
s
28
'
:

D
i
s
t
a
n
c
e

o
f

S
a
m
p
l
e

L
e
v
e
l

t
o

G
r
o
u
n
d
,

f
e
e
t
De
n
i
s
o
n

M
i
n
e
s
1%
Am
b
i
e
n
t
77
5
Gr
i
z
z
l
y

B
a
g
h
o
u
s
e
24
.
5
"
48
"


Fi
g
u
r
e

3
.

F
a
c
i
l
i
t
y

S
c
h
e
m
a
t
i
c

R
e
p
r
e
s
e
n
t
a
t
i
o
n
E
APPENDIX E
Calibration of the console dry gas meter(s), pitot tubes, nozzles diameters, and temperature
sensors were carried out in accordance with the procedures outlined in the Quality Assurance
Handbook. The appropriate calibration data are presented in the following pages. The nozzle
calibrations are recorded on the first page of the field data sheets.
Figure 4 Schematic of Method 5/114 Sampling Train
Meter Box Calibration Data and Calculations Forms
Post-test Dry Gas Meter Calibration Data Forms
Type S Pitot Tube Inspection Data
Sample Box Temperature Sensor Calibration
Fi
g
u
r
e

4
ME
T
H
O
D

5

D
R
Y

G
A
S

M
E
T
E
R

C
A
L
I
B
R
A
T
I
O
N

U
S
I
N
G

C
R
I
T
I
C
A
L

O
R
I
F
I
C
E
S
1)

S
e
l
e
c
t

t
h
r
e
e

c
r
i
t
i
c
a
l

o
r
i
f
i
c
e
s

t
o

c
a
l
i
b
r
a
t
e

t
h
e

d
r
y

g
a
s

m
e
t
e
r

w
h
i
c
h

b
r
a
c
k
e
t

t
h
e

e
x
p
e
c
t
e
d

o
p
e
r
a
t
i
n
g

r
a
n
g
e
.
2)

R
e
c
o
r
d

b
a
r
o
m
e
t
r
i
c

p
r
e
s
s
u
r
e

b
e
f
o
r
e

a
n
d

a
f
t
e
r

c
a
l
i
b
r
a
t
i
o
n

p
r
o
c
e
d
u
r
e
.
3)

R
u
n

a
t

t
e
s
t
e
d

v
a
c
u
u
m

(
f
r
o
m

O
r
i
f
i
c
e

C
a
l
i
b
r
a
t
i
o
n

R
e
p
o
r
t
)
,

f
o
r

a

p
e
r
i
o
d

o
f

t
i
m
e
ne
c
e
s
s
a
r
y

t
o

a
c
h
i
e
v
e

a

m
i
n
i
m
u
m

t
o
t
a
l

v
o
l
u
m
e

o
f

5

c
u
b
i
c

f
e
e
t
.
4)

Re
c
o
r
d

d
a
t
a

a
n
d

i
n
f
o
r
m
a
t
i
o
n

i
n

t
h
e

GR
E
E
N
c
e
l
l
s
,

Y
E
L
L
O
W

c
e
l
l
s

a
r
e

c
a
l
c
u
l
a
t
e
d
.
Fa
c
i
l
i
t
y
Ne
w

C
a
l
i
b
r
a
t
i
o
n

2
0
1
0
IN
I
T
I
A
L

F
I
N
A
L

A
V
G

(
P
ba
r
)
DA
T
E
:
1/
6
/
2
0
1
0
ME
T
E
R

S
E
R
I
A
L

#
:

1
5
2
2
5
8
8

B
A
R
O
M
E
T
R
I
C

P
R
ES
S
U
R
E

(
i
n

H
g
)
:

2
5
.
4
5

2
5
.
4
5

2
5
.
4
5

I
F

Y

V
A
R
I
A
T
I
O
N

E
X
C
E
E
D
S

2
.
0
0
%
,
ME
T
E
R

P
A
R
T

#
:

C
o
n
s
o
l
e

3

C
R
I
T
I
C
A
L

O
R
I
F
I
C
E

S
E
T

S
E
R
I
A
L

#
:

1
4
5
3
S
OR
I
F
I
C
E

S
H
O
U
L
D

B
E

R
E
C
A
L
I
B
R
A
T
E
D
K'

T
E
S
T
E
D
TE
M
P
E
R
A
T
U
R
E
S

°
F

E
L
A
P
S
E
D
FA
C
T
O
R

V
A
C
U
U
M

D
G
M

R
E
A
D
I
N
G
S

(
F
T
3)

A
M
B
I
E
N
T

D
G
M

I
N
L
E
T

D
G
M

O
U
T
L
E
T

D
G
M

T
I
M
E

(
M
I
N
)

D
G
M

ΔH
(1
)

(
2
)

(
3
)
Y
OR
I
F
I
C
E

#

R
U
N

#

(
A
V
G
)

(
i
n

H
g
)

I
N
I
T
I
A
L

F
I
N
A
L
NE
T

(
V
m)
IN
I
T
I
A
L

F
I
N
A
L

I
N
I
T
I
A
L

F
I
N
A
L
AV
G
θ
(i
n

H
2O)

V
m (
S
T
D
)

V
cr
(
S
T
D
)
Y
VA
R
I
A
T
I
O
N

(
%
)
ΔH@
1

0
.
8
1
3
7

1
3

1
5
1
.
8
1
3

1
5
8
.
7
1
9

6
.
9
0
6

7
2

6
5

6
8

7
9

7
9

7
2
.
7
5

6
.
5
0

2
.
9
0

5
.
8
7
1
7
5.
8
3
7
6
0.9
9
4
1.
7
2
0
2

0
.
8
1
3
7

1
3

1
6
2
.
2
5
8

1
6
9
.
4
7
0

7
.
2
1
2

7
2

6
8

6
9

7
9

8
1

7
4
.
2
5

6
.
7
5

2
.
9
0

6
.
1
1
4
7
6.
0
6
2
1
0.9
9
1
1.
7
1
5
3

0
.
8
1
3
7

1
3

1
6
9
.
4
7
0

1
7
4
.
8
2
8

5
.
3
5
8

7
2

7
0

7
5

8
1

8
5

7
7
.
7
5

5
.
0
0

2
.
9
0

4
.
5
1
3
2
4.
4
9
0
5
0.9
9
5
1.
7
0
4
AV
G

=

0
.
9
9
4
-0
.
6
2
1

0
.
5
3
1
7

1
3

1
8
4
.
0
4
8

1
8
9
.
2
8
9

5
.
2
4
1

7
2

8
0

8
0

8
0

8
2

8
0
.
5
0

7
.
5
0

1
.
2
0

4
.
3
7
0
8
4.
4
0
1
4
1.0
0
7
1.
6
3
5
2

0
.
5
3
1
7

1
3

1
8
9
.
2
8
9

1
9
4
.
9
3
8

5
.
6
4
9

7
2

8
0

8
1

8
2

8
2

8
1
.
2
5

8
.
0
0

1
.
2
0

4
.
7
0
4
5
4.
6
9
4
8
0.9
9
8
1.
6
3
2
3

0
.
5
3
1
7

1
3

1
9
4
.
9
3
8

2
0
0
.
2
1
4

5
.
2
7
6

7
2

8
1

8
2

8
2

8
3

8
2
.
0
0

7
.
5
0

1
.
2
0

4
.
3
8
7
8
4.
4
0
1
4
1.0
0
3
1.
6
3
0
AV
G

=

1
.
0
0
3
0.
2
9
1

0
.
3
3
0
7

1
3

2
0
0
.
5
0
2

2
0
5
.
7
8
2

5
.
2
8
0

7
1

8
0

8
1

8
2

8
2

8
1
.
2
5

1
2
.
0
0

0
.
4
4

4
.
3
8
7
6
4.
3
8
4
1
0.9
9
9
1.
5
4
1
2

0
.
3
3
0
7

1
3

2
0
5
.
7
8
2

2
1
1
.
0
4
0

5
.
2
5
8

7
1

8
1

8
2

8
2

8
3

8
2
.
0
0

1
2
.
0
0

0
.
4
4

4
.
3
6
3
2
4.
3
8
4
1
1.0
0
5
1.
5
3
9
3

0
.
3
3
0
7

1
3

2
1
1
.
0
4
0

2
1
6
.
3
0

5
.
2
6
0

7
1

8
2

8
2

8
3

8
3

8
2
.
5
0

1
2
.
0
0

0
.
4
4

4
.
3
6
0
9
4.
3
8
4
1
1.0
0
5
1.
5
3
7
AV
G

=

1
.
0
0
3
0.
3
3
AV
E
R
A
G
E

D
R
Y

G
A
S

M
E
T
E
R

C
A
L
I
B
R
A
T
I
O
N

F
A
C
T
O
R
,

Y

=

1.
0
0
0
AV
E
R
A
G
E

ΔH@ =

1.
6
2
8
(1
)

=
Ne
t

v
o
l
u
m
e

o
f

g
a
s

s
a
m
p
l
e

p
a
s
s
e
d

t
h
r
o
u
g
h

D
G
M
,

c
o
r
r
e
c
t
e
d

t
o

s
t
a
n
d
a
r
d

c
o
n
d
i
t
i
o
n
s
K1 =
17
.
6
4

oR/i
n
.

H
g

(
E
n
g
l
i
s
h
)
,

0
.
3
8
5
8

oK/
m
m

H
g

(
M
e
t
r
i
c
)
Tm =
Ab
s
o
l
u
t
e

D
G
M

a
v
g
.

t
e
m
p
e
r
a
t
u
r
e

(
oR -

E
n
g
l
i
s
h
,
o
K -

M
e
t
r
i
c
)
ΔH@ =

0.
7
5

θ
ΔH

V
m(s
t
d
)

Vcr(s
t
d
)

V
m
(2
)

=
Vo
l
u
m
e

o
f

g
a
s

s
a
m
p
l
e

p
a
s
s
e
d

t
h
r
o
u
g
h

t
h
e

c
r
i
t
i
c
a
l

o
r
i
f
i
c
e
,

c
o
r
r
e
c
t
e
d

t
o

s
t
a
n
d
a
r
d

c
o
n
d
i
t
i
o
n
s
Tam
b
=
Ab
s
o
l
u
t
e

a
m
b
i
e
n
t

t
e
m
p
e
r
a
t
u
r
e

(
oR -

E
n
g
l
i
s
h
,
o
K
-

M
e
t
r
i
c
)
K'
=

A
v
e
r
a
g
e

K
'

f
a
c
t
o
r

f
r
o
m

C
r
i
t
i
c
a
l

O
r
i
f
i
c
e

C
a
l
i
b
r
a
t
i
o
n
Re
f
e
r
e
n
c
e

I
n

O
u
t
(3
)

=
DG
M

c
a
l
i
b
r
a
t
i
o
n

f
a
c
t
o
r
oF
oF
oF
34

3
6

3
5
73

7
3

7
4
12
5

1
2
4

1
2
5
12
Te
m
p
e
r
a
t
u
r
e

S
e
n
s
o
r
s

(
4
-
2
8
-
0
8
)
EQ
U
I
P
M
E
N
T

I
D

#
:
Co
n
s
o
l
e

#
3
30 19
EN
V
I
R
O
N
M
E
N
T
A
L

S
U
P
P
L
Y

C
O
M
P
A
N
Y
US
I
N
G

T
H
E

C
R
I
T
I
C
A
L

O
R
I
F
I
C
E
S

A
S

C
A
L
I
B
R
A
T
I
O
N

S
T
A
N
D
A
R
D
S
:
Th
e

f
o
l
l
o
w
i
n
g

e
q
u
a
t
i
o
n
s

a
r
e

u
s
e
d

t
o

c
a
l
c
u
l
a
t
e

t
h
e

s
t
a
n
d
a
r
d

v
o
l
u
m
e
s

o
f

a
i
r

p
a
s
s
e
d

t
h
r
o
u
g
h

t
h
e

D
G
M
,

V
m
(s
t
d
)
,

a
n
d

t
h
e

c
r
i
t
i
c
a
l

o
r
i
f
i
c
e
,

Vcr
(s
t
d
)
,

a
n
d

t
h
e

D
G
M

c
a
l
i
b
r
a
t
i
o
n

f
a
c
t
o
r
,

Y
.

T
h
e
s
e

e
q
u
a
t
i
o
n
s

a
r
e

a
u
t
o
m
a
t
i
c
a
l
l
y

c
a
l
c
u
l
a
t
e
d

i
n

t
h
e

s
p
r
e
a
d
s
h
e
e
t

a
b
o
v
e
.
(
)2
(
)
Tm
H
Pb
a
r
Vm
K
Vm
st
d
)6.
13
/
(
1
)
(
Δ
+
∗
∗
=
Ta
m
b
Pb
a
r
K
Vc
r
std
Θ
∗
∗
=
'
)
(
)
(
)
(stdst
d
VmVc
r
Y
=
Pr
e

C
a
l
i
b
r
a
t
i
o
n

2
0
0
8
ME
T
H
O
D

5

D
R
Y

G
A
S

M
E
T
E
R

C
A
L
I
B
R
A
T
I
O
N

U
S
I
N
G

C
R
I
T
I
C
A
L

O
R
I
F
I
C
E
S
1)

S
e
l
e
c
t

t
h
r
e
e

c
r
i
t
i
c
a
l

o
r
i
f
i
c
e
s

t
o

c
a
l
i
b
r
a
t
e

t
h
e

d
r
y

g
a
s

m
e
t
e
r

w
h
i
c
h

b
r
a
c
k
e
t

t
h
e

e
x
p
e
c
t
e
d

o
p
e
r
a
t
i
n
g

r
a
n
g
e
.
2)

R
e
c
o
r
d

b
a
r
o
m
e
t
r
i
c

p
r
e
s
s
u
r
e

b
e
f
o
r
e

a
n
d

a
f
t
e
r

c
a
l
i
b
r
a
t
i
o
n

p
r
o
c
e
d
u
r
e
.
3)

R
u
n

a
t

t
e
s
t
e
d

v
a
c
u
u
m

(
f
r
o
m

O
r
i
f
i
c
e

C
a
l
i
b
r
a
t
i
o
n

R
e
p
o
r
t
)
,

f
o
r

a

p
e
r
i
o
d

o
f

t
i
m
e
ne
c
e
s
s
a
r
y

t
o

a
c
h
i
e
v
e

a

m
i
n
i
m
u
m

t
o
t
a
l

v
o
l
u
m
e

o
f

5

c
u
b
i
c

f
e
e
t
.
4)

Re
c
o
r
d

d
a
t
a

a
n
d

i
n
f
o
r
m
a
t
i
o
n

i
n

t
h
e

GR
E
E
N
c
e
l
l
s
,

Y
E
L
L
O
W

c
e
l
l
s

a
r
e

c
a
l
c
u
l
a
t
e
d
.
IN
I
T
I
A
L

F
I
N
A
L
AV
G

(
P
ba
r
)
DA
T
E
:
1/6
/
2
0
1
0
ME
T
E
R

S
E
R
I
A
L

#
:

2
7
8
6
3

B
A
R
O
M
E
T
R
I
C

P
R
ES
S
U
R
E

(
i
n

H
g
)
:

2
5
.
5

2
5
.
5

2
5
.
5

I
F

Y

V
A
R
I
A
T
I
O
N

E
X
C
E
E
D
S

2
.
0
0
%
,
ME
T
E
R

P
A
R
T

#
:

C
o
n
s
o
l
e

4

C
R
I
T
I
C
A
L

O
R
I
F
I
C
E

S
E
T

S
E
R
I
A
L

#
:

1
4
5
3
S
OR
I
F
I
C
E

S
H
O
U
L
D

B
E

R
E
C
A
L
I
B
R
A
T
E
D
K'

T
E
S
T
E
D
TE
M
P
E
R
A
T
U
R
E
S

°
F

E
L
A
P
S
E
D
FA
C
T
O
R

V
A
C
U
U
M
DG
M

R
E
A
D
I
N
G
S

(
F
T
3)
AM
B
I
E
N
T

D
G
M

I
N
L
E
T

D
G
M

O
U
T
L
E
T

D
G
M

T
I
M
E

(
M
I
N
)
DG
M

ΔH
(1
)

(
2
)

(
3
)
Y
OR
I
F
I
C
E

#

R
U
N

#

(
A
V
G
)

(
i
n

H
g
)

I
N
I
T
I
A
L

F
I
N
A
L
NE
T

(
V
m)
IN
I
T
I
A
L

F
I
N
A
L

I
N
I
T
I
A
L

F
I
N
A
L
AV
G
θ
(i
n

H
2O)

V
m (
S
T
D
)

V
cr (
S
T
D
)
Y
VA
R
I
A
T
I
O
N

(
%
)
ΔH@
1

0
.
8
1
3
7

1
3

1
9
0
.
8
0
5
0
0

1
9
7
.
7
2
7

6
.
9
2
2

7
2

7
2

7
4

7
8

7
8

7
5
.
5

6
.
5
0

2
.
6
0

5
.
8
6
1
5
5.8
4
9
1
0.
9
9
8
1.
5
2
9
2

0
.
8
1
3
7

1
3

1
9
7
.
7
2
7

2
0
4
.
1
2
6

6
.
3
9
9

7
2

7
4

7
6

7
8

8
1

7
7
.
2
5

6
.
0
0

2
.
6
0

5
.
4
0
0
9
5.3
9
9
2
1.
0
0
0
1.
5
2
4
3

0
.
8
1
3
7

1
3

2
0
4
.
1
2
6

2
1
0
.
5
6
4

6
.
4
3
8

7
2

7
6

7
6

8
1

8
2

7
8
.
7
5

6
.
0
0

2
.
6
0

5
.
4
1
8
7
5.3
9
9
2
0.
9
9
6
1.
5
2
0
AV
G

=

0
.
9
9
8
-0
.
4
1
1

0
.
5
3
1
7

1
3

2
1
7
.
4
0
7

2
2
2
.
9
9
8

5
.
5
9
1

7
2

7
6

7
6

7
8

7
8

7
7
.
0
0

8
.
0
0

1
.
1
2

4
.
7
0
1
2
4.7
0
4
0
1.
0
0
1
1.
5
3
2
20
1
0

P
r
e
-
C
a
l
i
b
r
a
t
i
o
n
EQ
U
I
P
M
E
N
T

I
D

#
:
Co
n
s
o
l
e

#
4
30 19
EN
V
I
R
O
N
M
E
N
T
A
L

S
U
P
P
L
Y

C
O
M
P
A
N
Y
2

0
.
5
3
1
7

1
3

2
2
2
.
9
9
8

2
2
8
.
2
3
5

5
.
2
3
7

7
2

7
6

7
6

7
8

7
9

7
7
.
2
5

7
.
5
0

1
.
1
2

4
.
4
0
1
5
4.
4
1
0
1.
0
0
2
1.
5
3
1
3

0
.
5
3
1
7

1
3

2
2
8
.
2
3
5

2
3
4
.
5
0
5

6
.
2
7
0

7
2

7
6

7
6

7
9

7
8

7
7
.
2
5

9
.
0
0

1
.
1
2

5
.
2
6
9
6
5.2
9
2
0
1.
0
0
4
1.
5
3
1
AV
G

=

1
.
0
0
2
0.0
1
1

0
.
3
3
0
7

1
3

2
3
6
.
5
5
1
0

2
4
1
.
8
4
4

5
.
2
9
3

7
4

7
6

7
6

7
8

7
8

7
7
.
0
0

1
2
.
2
5

0
.
4
2

4
.
4
4
1
6
4.4
7
1
6
1.
0
0
7
1.
4
8
8
2

0
.
3
3
0
7

1
3

2
4
1
.
8
4
4

2
4
7
.
2
5
3

5
.
4
0
9

7
4

7
6

7
7

7
8

7
9

7
7
.
5
0

1
2
.
5
0

0
.
4
2

4
.
5
3
4
8
4.5
6
2
9
1.
0
0
6
1.
4
8
6
3

0
.
3
3
0
7

1
3

2
4
7
.
2
5
3

2
5
2
.
8
8
5

5
.
6
3
2

7
4

7
7

7
7

7
9

7
8

7
7
.
7
5

1
3
.
0
0

0
.
4
2

4
.
7
1
9
5
4.7
4
5
4
1.
0
0
5
1.
4
8
6
AV
G

=

1
.
0
0
6
0.4
0
AV
E
R
A
G
E

D
R
Y

G
A
S

M
E
T
E
R

C
A
L
I
B
R
A
T
I
O
N

F
A
C
T
O
R
,

Y

=

1.
0
0
2
AV
E
R
A
G
E

ΔH@ =

1.
5
1
4
(1
)

=
Ne
t

v
o
l
u
m
e

o
f

g
a
s

s
a
m
p
l
e

p
a
s
s
e
d

t
h
r
o
u
g
h

D
G
M
,

c
o
r
r
e
c
t
e
d

t
o

s
t
a
n
d
a
r
d

c
o
n
d
i
t
i
o
n
s
K1 =
17
.
6
4

oR/i
n
.

H
g

(
E
n
g
l
i
s
h
)
,

0
.
3
8
5
8

oK/
m
m

H
g

(
M
e
t
r
i
c
)
Tm =
Ab
s
o
l
u
t
e

D
G
M

a
v
g
.

t
e
m
p
e
r
a
t
u
r
e

(
oR -

E
n
g
l
i
s
h
,
oK -

M
e
t
r
i
c
)
ΔH@ =

0.
7
5

θ
ΔH

V
m(s
t
d
)

Vcr(s
t
d
)

V
m
(2
)

=
Vo
l
u
m
e

o
f

g
a
s

s
a
m
p
l
e

p
a
s
s
e
d

t
h
r
o
u
g
h

t
h
e

c
r
i
t
i
c
a
l

o
r
i
f
i
c
e
,

c
o
r
r
e
c
t
e
d

t
o

s
t
a
n
d
a
r
d

c
o
n
d
i
t
i
o
n
s
Tam
b
=
Ab
s
o
l
u
t
e

a
m
b
i
e
n
t

t
e
m
p
e
r
a
t
u
r
e

(
oR
-

E
n
g
l
i
s
h
,
oK
-

M
e
t
r
i
c
)
K'
=

A
v
e
r
a
g
e

K
'

f
a
c
t
o
r

f
r
o
m

C
r
i
t
i
c
a
l

O
r
i
f
i
c
e

C
a
l
i
b
r
a
t
i
o
n
Re
f
e
r
e
n
c
e

I
n

O
u
t
(3
)

=
DG
M

c
a
l
i
b
r
a
t
i
o
n

f
a
c
t
o
r
oF
oF
oF
34

3
4

3
4
73

7
1

7
3
11
6

1
1
6

1
1
7
12
Te
m
p
e
r
a
t
u
r
e

S
e
n
s
o
r
s
19
EN
V
I
R
O
N
M
E
N
T
A
L

S
U
P
P
L
Y

C
O
M
P
A
N
Y
US
I
N
G

T
H
E

C
R
I
T
I
C
A
L

O
R
I
F
I
C
E
S

A
S

C
A
L
I
B
R
A
T
I
O
N

S
T
A
N
D
A
R
D
S
:
Th
e

f
o
l
l
o
w
i
n
g

e
q
u
a
t
i
o
n
s

a
r
e

u
s
e
d

t
o

c
a
l
c
u
l
a
t
e

t
h
e

s
t
a
n
d
a
r
d

v
o
l
u
m
e
s

o
f

a
i
r

p
a
s
s
e
d

t
h
r
o
u
g
h

t
h
e

D
G
M
,

V
m
(s
t
d
)
,

a
n
d

t
h
e

c
r
i
t
i
c
a
l

o
r
i
f
i
c
e
,

Vcr
(s
t
d
)
,

a
n
d

t
h
e

D
G
M

c
a
l
i
b
r
a
t
i
o
n

f
a
c
t
o
r
,

Y
.

T
h
e
s
e

e
q
u
a
t
i
o
n
s
a
r
e

a
u
t
o
m
a
t
i
c
a
l
l
y

c
a
l
c
u
l
a
t
e
d

i
n

t
h
e

s
p
r
e
a
d
s
h
e
e
t

a
b
o
v
e
.
(
)2
(
)
Tm
H
Pb
a
r
Vm
K
Vm
st
d
)6.
13
/
(
1
)
(
Δ
+
∗
∗
=
Ta
m
b
Pb
a
r
K
Vc
r
std
Θ
∗
∗
=
'
)
(
)
(
)
(st
d
st
d
VmVc
r
Y
=
PR
E

C
o
n
s
o
l
e

#
4

C
a
l
i
b
r
a
t
i
o
n

2
0
1
0
ME
T
H
O
D

5

D
R
Y

G
A
S

M
E
T
E
R

C
A
L
I
B
R
A
T
I
O
N

U
S
I
N
G

C
R
I
T
I
C
A
L

O
R
I
F
I
C
E
S
1)

S
e
l
e
c
t

t
h
r
e
e

c
r
i
t
i
c
a
l

o
r
i
f
i
c
e
s

t
o

c
a
l
i
b
r
a
t
e

t
h
e

d
r
y

g
a
s

m
e
t
e
r

w
h
i
c
h

b
r
a
c
k
e
t

t
h
e

e
x
p
e
c
t
e
d

o
p
e
r
a
t
i
n
g

r
a
n
g
e
.
2)

R
e
c
o
r
d

b
a
r
o
m
e
t
r
i
c

p
r
e
s
s
u
r
e

b
e
f
o
r
e

a
n
d

a
f
t
e
r

c
a
l
i
b
r
a
t
i
o
n

p
r
o
c
e
d
u
r
e
.
3)

R
u
n

a
t

t
e
s
t
e
d

v
a
c
u
u
m

(
f
r
o
m

O
r
i
f
i
c
e

C
a
l
i
b
r
a
t
i
o
n

R
e
p
o
r
t
)
,

f
o
r

a

p
e
r
i
o
d

o
f

t
i
m
e
ne
c
e
s
s
a
r
y

t
o

a
c
h
i
e
v
e

a

m
i
n
i
m
u
m

t
o
t
a
l

v
o
l
u
m
e

o
f

5

c
u
b
i
c

f
e
e
t
.
4)

R
e
c
o
r
d

d
a
t
a

a
n
d

i
n
f
o
r
m
a
t
i
o
n

i
n

t
h
e

GR
E
E
N
c
e
l
l
s
,

Y
E
L
L
O
W

c
e
l
l
s

a
r
e

c
a
l
c
u
l
a
t
e
d
.
IN
I
T
I
A
L

F
I
N
A
L

A
V
G

(
P
ba
r
)
DA
T
E
:
1/8
/
2
0
1
0
ME
T
E
R

S
E
R
I
A
L

#
:

2
6
1
4
4
BA
R
O
M
E
T
R
I
C

P
R
ES
S
U
R
E

(
i
n

H
g
)
:

2
5
.
7
0

2
5
.
7
0

2
5
.
7
0

I
F

Y

V
A
R
I
A
T
I
O
N

E
X
C
E
E
D
S

2
.
0
0
%
,
ME
T
E
R

P
A
R
T

#
:

C
o
n
s
o
l
e

6

C
R
I
T
I
C
A
L

O
R
I
F
I
C
E

S
E
T

S
E
R
I
A
L

#
:

1
4
5
3
S
OR
I
F
I
C
E

S
H
O
U
L
D

B
E

R
E
C
A
L
I
B
R
A
T
E
D
K'

T
E
S
T
E
D
TE
M
P
E
R
A
T
U
R
E
S

°
F

E
L
A
P
S
E
D
FA
C
T
O
R

V
A
C
U
U
M

D
G
M

R
E
A
D
I
N
G
S

(
F
T
3)

A
M
B
I
E
N
T

D
G
M

I
N
L
E
T

D
G
M

O
U
T
L
E
T

D
G
M

T
I
M
E

(
M
I
N
)

D
G
M

ΔH
(1)
(2)
(3)
Y
OR
I
F
I
C
E

#

R
U
N

#

(
A
V
G
)

(
i
n

H
g
)

I
N
I
T
I
A
L

F
I
N
A
L
NE
T

(
V
m)
IN
I
T
I
A
L

F
I
N
A
L

I
N
I
T
I
A
L

F
I
N
A
L
AV
G
θ
(i
n

H
2O)

V
m (
S
T
D
)

V
cr
(
S
T
D
)
Y
VA
R
I
A
T
I
O
N

(
%
)
ΔH@
1

0
.
8
1
3
7

1
3

1
6
4
.
5
0
6

1
6
9
.
7
7
0

5
.
2
6
4

7
4

6
3

6
8

8
6

9
0

7
6
.
7
5

5
.
0
0

3
.
0
0

4
.
4
8
6
8
4.
5
2
6
1
1.
0
0
9
1.7
5
5
2

0
.
8
1
3
7

1
3

1
6
9
.
7
7
0

1
7
5
.
0
8
7

5
.
3
1
7

7
4

6
8

7
5

9
0

1
0
0

8
3
.
2
5

5
.
0
0

3
.
0
0

4
.
4
7
7
7
4.
5
2
6
1
1.
0
1
1
1.7
3
4
3

0
.
8
1
3
7

1
3

1
7
5
.
0
8
7

1
8
0
.
4
5
1

5
.
3
6
4

7
4

7
5

7
9

1
0
0

1
0
3

8
9
.
2
5

5
.
0
0

3
.
0
0

4
.
4
6
7
9
4.
5
2
6
1
1.
0
1
3
1.7
1
5
AV
G

=

1
.
0
1
1
0.
0
5
1

0
.
5
3
1
7

1
2

1
9
7
.
7
0
2

2
0
2
.
9
9
5

5
.
2
9
3

7
4

8
1

8
2

9
2

9
5

8
7
.
5
0

7
.
5
0

1
.
2
0

4
.
4
0
0
3
4.
4
3
6
3
1.
0
0
8
1.6
0
4
2

0
.
5
3
1
7

1
2

2
1
0
.
7
0
3

2
1
6
.
0
1
1

5
.
3
0
8

7
4

8
2

8
2

9
5

9
7

8
9
.
0
0

7
.
5
0

1
.
2
0

4
.
4
0
0
7
4.
4
3
6
3
1.
0
0
8
1.6
0
0
3

0
.
5
3
1
7

1
2

2
1
6
.
0
1
1

2
2
1
.
3
2
4

5
.
3
1
3

7
4

8
2

8
2

9
7

9
8

8
9
.
7
5

7
.
5
0

1
.
2
0

4
.
3
9
8
9
4.
4
3
6
3
1.
0
0
9
1.5
9
7
AV
G

=

1
.
0
0
8
-0
.
2
0
1

0
.
3
3
0
7

1
2

1
8
1
.
2
0
2
0

1
8
6
.
4
5
4

5
.
2
5
2

7
4

8
0

8
1

9
2

9
5

8
7
.
0
0

1
2
.
0
0

0
.
4
0

4
.
3
6
0
3
4.
4
1
4
7
1.
0
1
2
1.3
8
0
2

0
.
3
3
0
7

1
2

1
8
6
.
4
5
4

1
9
1
.
7
2
2

5
.
2
6
8

7
4

8
1

8
2

9
5

9
6

8
8
.
5
0

1
2
.
0
0

0
.
4
0

4
.
3
6
1
6
4.
4
1
4
7
1.
0
1
2
1.3
7
6
3

0
.
3
3
0
7

1
2

1
9
1
.
7
2
2

1
9
6
.
9
9
0

5
.
2
6
8

7
4

8
2

8
1

9
6

9
2

8
7
.
7
5

1
2
.
0
0

0
.
4
0

4
.
3
6
7
5
4.
4
1
4
7
1.
0
1
1
1.3
7
8
AV
G

=

1
.
0
1
2
0.
1
5
AV
E
R
A
G
E

D
R
Y

G
A
S

M
E
T
E
R

C
A
L
I
B
R
A
T
I
O
N

F
A
C
T
O
R
,

Y

=

1.
0
1
0
AV
E
R
A
G
E

ΔH@ =

1.
5
7
1
(1
)

=
Ne
t

v
o
l
u
m
e

o
f

g
a
s

s
a
m
p
l
e

p
a
s
s
e
d

t
h
r
o
u
g
h

D
G
M
,

c
o
r
r
e
c
t
e
d

t
o

s
t
a
n
d
a
r
d

c
o
n
d
i
t
i
o
n
s
K1 =
17
.
6
4

oR/
i
n
.

H
g

(
E
n
g
l
i
s
h
)
,

0
.
3
8
5
8

oK/m
m

H
g

(
M
e
t
r
i
c
)
Tm =
Ab
s
o
l
u
t
e

D
G
M

a
v
g
.

t
e
m
p
e
r
a
t
u
r
e

(
oR
-

E
n
g
l
i
s
h
,
o
K
-

M
e
t
r
i
c
)
ΔH@ =

0.
7
5

θ
ΔH

V
m(s
t
d
)

Vcr
(s
t
d
)

V
m
(2
)

=
Vo
l
u
m
e

o
f

g
a
s

s
a
m
p
l
e

p
a
s
s
e
d

t
h
r
o
u
g
h

t
h
e

c
r
i
t
i
c
a
l

o
r
i
f
i
c
e
,

c
o
r
r
e
c
t
e
d

t
o

s
t
a
n
d
a
r
d

c
o
n
d
i
t
i
o
n
s
Tam
b
=
Ab
s
o
l
u
t
e

a
m
b
i
e
n
t

t
e
m
p
e
r
a
t
u
r
e

(
oR
-

E
n
g
l
i
s
h
,
o
K
-

M
e
t
r
i
c
)
K'

=

A
v
e
r
a
g
e

K
'

f
a
c
t
o
r

f
r
o
m

C
r
i
t
i
c
a
l

O
r
i
f
i
c
e

C
a
l
i
b
r
a
t
i
o
n
Re
f
e
r
e
n
c
e

I
n

O
u
t
(3
)

=
DG
M

c
a
l
i
b
r
a
t
i
o
n

f
a
c
t
o
r
oF
oF
oF
33

3
4

3
4
67

6
6

6
6
12
1

1
2
0

1
2
0
20
1
0

P
r
e
-
C
a
l
i
b
r
a
t
i
o
n
12
Te
m
p
e
r
a
t
u
r
e

S
e
n
s
o
r
s
EQ
U
I
P
M
E
N
T

I
D

#
:
Co
n
s
o
l
e

#
6
30 19
EN
V
I
R
O
N
M
E
N
T
A
L

S
U
P
P
L
Y

C
O
M
P
A
N
Y
US
I
N
G

T
H
E

C
R
I
T
I
C
A
L

O
R
I
F
I
C
E
S

A
S

C
A
L
I
B
R
A
T
I
O
N

S
T
A
N
D
A
R
D
S
:
Th
e

f
o
l
l
o
w
i
n
g

e
q
u
a
t
i
o
n
s

a
r
e

u
s
e
d

t
o

c
a
l
c
u
l
a
t
e

t
h
e

s
t
a
n
d
a
r
d

v
o
l
u
m
e
s

o
f

a
i
r

p
a
s
s
e
d

t
h
r
o
u
g
h

t
h
e

D
G
M
,

V
m
(s
t
d
)
,

a
n
d

t
h
e

c
r
i
t
i
c
a
l

or
i
f
i
c
e
,

V
cr
(s
t
d
)
,

a
n
d

t
h
e

D
G
M

c
a
l
i
b
r
a
t
i
o
n

f
a
c
t
o
r
,

Y
.

T
h
e
s
e

e
q
u
a
t
i
o
n
s

a
r
e

a
u
t
o
m
a
t
i
c
a
l
l
y

c
a
l
c
u
l
a
t
e
d

i
n

t
h
e

s
p
r
e
a
d
s
h
e
e
t

a
b
o
v
e
.
(
)2
(
)
Tm
H
Pb
a
r
Vm
K
Vm
st
d
)6.
13
/
(
1
)
(
Δ
+
∗
∗
=
Ta
m
b
Pb
a
r
K
Vc
r
std
Θ
∗
∗
=
'
)
(
)
(
)
(stdst
d
VmVc
r
Y
=
PR
E

C
o
n
s
o
l
e

#
6

C
a
l
i
b
r
a
t
i
o
n

2
0
1
0
TETCO
Sample Box Temperature Sensor Calibration
Date:1/13/2010 Calibrator: Mike McNamara Reference:Omega CL3512A
Unit ID Thermocouple
Location
Temperature Temperature Temp. Diff.
Source Reference Sensor or Result
(Medium)(oF)(oF)(oF), P/F
A
Oven Water 33 32 1
Water 203 204 1
Probe Out Water 33 32 1
Water 203 203 -
Impinger Out Water 33 32 1
WaterWater 203 202 1
B
Oven Water 33 32 1
Water 203 204 1
Probe Out Water 33 32 1
Water 203 203 -
Impinger Out Water 33 34 1
WaterWate 203 202 1
C
Oven Water 33 33 -
Water 203 203 -
Probe Out Water 33 31 -
Water 203 202 1
Impinger Out Water 33 34 1
WaterWate 203 202 1
D
Oven Water 33 32 1
Water 203 203 -
Probe Out Water 33 32 1
Water 203 203 -
Impinger Out Water 33 34 1
WaterWate 203 202 1
E
Oven Water 33 33 -
Water 203 204 1
Probe Out Water 33 33 -
Water 203 203 -
Impinger Out Water 33 34 1
WaterWate 203 201 2
F
Oven Water 33 33 -
Water 203 204 1
Probe Out Water 33 32 1
Water 203 203 -
Impinger Out Water 33 33 -
WaterWate 203 202 1
Impinger Out G Water 33 34 1Water2032012
Impinger Out H Water 33 34 1Water2032021
Impinger Out I Water 33 33 -
Water 203 203 -
Impinger Out J Water 33 33 -
Water 203 202 1
APPENDIX F
The testing followed the same procedures as outlined in previous protocols and tests at this
facility.
U-Nat
u/Ci/cc
U-Nat.
uCi/sec
Th-230
uCi/cc
Th-230
uCi/sec
Ra-226
uCi/cc
Ra-226
uCi/sec
Pb-210
uCi/cc
Pb-210
uCi/sec
1ST Qtr,
2009
North YC
Dryer, Run
1 1.94E-09 8.33E-04 1.14E-12 4.91E-07 5.12E-14 2.20E-08 1.12E-12 4.81E-07
North YC
Dryer, Run
2 1.60E-09 6.51E-04 7.60E-13 3.10E-07 3.45E-14 1.41E-08 1.05E-12 4.29E-07
2nd Qtr,
2009
North YC
Dryer, Run
1 4.49E-10 2.31E-04 3.70E-13 1.90E-07 3.61E-14 1.86E-08 5.60E-13 2.88E-07
North YC
Dryer, Run
2 9.26E-10 6.07E-04 3.59E-13 2.36E-07 2.60E-14 1.71E-08 8.68E-13 5.69E-07
Yellowcake
Baghouse 5.81E-10 6.07E-04 4.10E-12 4.59E-06 2.88E-14 3.22E-08 2.86E-13 3.20E-07
Grizzly
Baghouse 1.28E-11 6.50E-04 2.32E-13 2.36E-07 1.81E-13 8.12E-08 3.46E-13 1.55E-07
3rd Qtr,
2009
North YC
Dryer, Run
1 7.05E-09 3.60E-03
Not
Required
Not
Required
Not
Required
Not
Required
Not
Required
Not
Required
North YC
Dryer, Run
2 1.72E-08 7.90E-03
Not
Required
Not
Required
Not
Required
Not
Required
Not
Required
Not
Required
Yellowcake
Baghouse 3.24E-09 3.44E-03
Not
Required
Not
Required
Not
Required
Not
Required
Not
Required
Not
Required
4th Qtr,
2009
North YC
Dryer, Run
1 7.31E-09 3.59E-03 3.24E-11 1.59E-05 2.09E-12 1.02E-06 2.38E-13 1.17E-07
North YC
Dryer, Run
2 9.94E-09 4.97E-03 1.34E-11 6.71E-06 2.17E-12 1.08E-06 1.98E-13 9.92E-08
Yellowcake
Baghouse 3.74E-09 4.61E-03 2.01E-11 2.48E-05 1.34E-12 1.65E-06 4.22E-13 5.20E-07
Table 8- Stack Effluent Concentrations and Release Rates
ANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORT
This report was prepared by Energy Laboratories, Inc., 2393 Salt Creek Hwy., Casper, WY 82601. Any exceptions
or problems with the analyses are noted in the Laboratory Analytical Report, the QA/QC Summary Report, or the
Case Narrative.
The results as reported relate only to the item(s) submitted for testing.
If you have any questions regarding these test results, please call.
Sample ID Client Sample ID Collect Date Receive Date Matrix Test
Report Approved By:
C10110506-001 Cottonwood 11/11/10 09:30 11/12/10 Aqueous Sample Filtering
Uranium, Dissolved
Uranium, Suspended
Digestion, Total Metals
Gross Alpha minus Rn222 and
Uranium
Radium 226, Dissolved
Radium 226, Suspended
Thorium, Isotopic
Thorium, Suspended Isotopic
Solids, Total Dissolved
Solids, Total Suspended
C10110506-002 Temp Blank 11/11/10 00:00 11/12/10 Aqueous Temperature
Denison Mines USA Corp
Project Name: Semi-Annual Surface Water
Workorder No.: C10110506
6425 S Hwy 191
Blanding, UT 84511
December 29, 2010
Energy Laboratories, Inc. Casper WY received the following 2 samples for Denison Mines USA Corp on 11/12/2010 for
analysis.
Page 1 of 12
Project:Semi-Annual Surface Water
CLIENT:Denison Mines USA Corp
Sample Delivery Group:C10110506 CASE NARRATIVE
12/29/10Report Date:
ORIGINAL SAMPLE SUBMITTAL(S)
All original sample submittals have been returned with the data package.
SAMPLE TEMPERATURE COMPLIANCE: 4°C (±2°C)
Temperature of samples received may not be considered properly preserved by accepted standards. Samples that are hand
delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters. Data provided by
this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days). The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay. Maximum recommended delay between end of exposure to
beginning of counting should not exceed 8 days.
SOIL/SOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE, SIMAZINE AND PCB ANALYSIS
Data for PCBs, Atrazine and Simazine are reported from EPA 525.2. PCB data reported by ELI reflects the results for seven
individual Aroclors. When the results for all seven are ND (not detected), the sample meets EPA compliance criteria for
PCB monitoring.
SUBCONTRACTING ANALYSIS
Subcontracting of sample analyses to an outside laboratory may be required. If so, ENERGY LABORATORIES will utilize its
branch laboratories or qualified contract laboratories for this service. Any such laboratories will be indicated within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
eli-b - Energy Laboratories, Inc. - Billings, MT
eli-g - Energy Laboratories, Inc. - Gillette, WY
eli-h - Energy Laboratories, Inc. - Helena, MT
eli-r - Energy Laboratories, Inc. - Rapid City, SD
eli-t - Energy Laboratories, Inc. - College Station, TX
CERTIFICATIONS:
USEPA: WY00002, Radiochemical WY00937; FL-DOH NELAC: E87641, Radiochemical E871017; California: 02118CA;
Oregon: WY200001; Utah: 3072350515; Virginia: 00057; Washington: C1903
ISO 17025 DISCLAIMER:
The results of this Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES, INC. - CASPER,WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities. Some results requested by the client may not be covered
under these certifications. All analysis data to be submitted for regulatory enforcement should be certified in the sample
state of origin. Please verify ELI's certification coverage by visiting www.energylab.com
ELI appreciates the opportunity to provide you with this analytical service. For additional information and services visit our
web page www.energylab.com.
Page 2 of 12
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:Semi-Annual Surface Water
Lab ID:C10110506-001
Client Sample ID:Cottonwood
Collection Date:11/11/10 09:30
Matrix:Aqueous
Report Date:12/29/10
DateReceived:11/12/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
Prepared by Casper, WY Branch
PHYSICAL PROPERTIES
11/12/10 15:10 / lr10mg/L624Solids, Total Dissolved TDS @ 180 C A2540 C
11/12/10 15:36 / lr4mg/L40Solids, Total Suspended TSS @ 105 C A2540 D
METALS - DISSOLVED
12/13/10 20:25 / sml0.0003mg/L0.0077Uranium E200.8
METALS - SUSPENDED
12/09/10 01:20 / sml0.0003mg/LNDUranium E200.8
RADIONUCLIDES - DISSOLVED
11/23/10 15:22 / eppCi/L2.0Gross Alpha minus Rn & U E900.1
11/23/10 15:22 / eppCi/L0.8Gross Alpha minus Rn & U Precision (±)E900.1
11/23/10 15:22 / eppCi/L0.8Gross Alpha minus Rn & U MDC E900.1
11/24/10 01:48 / dmfpCi/L1.8Radium 226 E903.0
11/24/10 01:48 / dmfpCi/L0.22Radium 226 precision (±)E903.0
11/24/10 01:48 / dmfpCi/L0.09Radium 226 MDC E903.0
U 11/18/10 16:01 / dmfpCi/L0.02Thorium 230 E907.0
11/18/10 16:01 / dmfpCi/L0.07Thorium 230 precision (±)E907.0
11/18/10 16:01 / dmfpCi/L0.1Thorium 230 MDC E907.0
RADIONUCLIDES - SUSPENDED
U 12/02/10 02:17 / trspCi/L-0.005Radium 226 E903.0
12/02/10 02:17 / trspCi/L0.11Radium 226 precision (±)E903.0
12/02/10 02:17 / trspCi/L0.19Radium 226 MDC E903.0
U 11/30/10 08:42 / dmfpCi/L0.2Thorium 230 E907.0
11/30/10 08:42 / dmfpCi/L0.2Thorium 230 precision (±)E907.0
11/30/10 08:42 / dmfpCi/L0.2Thorium 230 MDC E907.0
PHYSICAL PROPERTIES
11/12/10 15:10 / lr10mg/L624Solids, Total Dissolved TDS @ 180 C A2540 C
11/12/10 15:36 / lr4mg/L40Solids, Total Suspended TSS @ 105 C A2540 D
METALS - DISSOLVED
12/13/10 20:25 / sml0.0003mg/L0.0077Uranium E200.8
METALS - SUSPENDED
12/09/10 01:20 / sml0.0003mg/LNDUranium E200.8
RADIONUCLIDES - DISSOLVED
11/23/10 15:22 / eppCi/L2.0Gross Alpha minus Rn & U E900.1
11/23/10 15:22 / eppCi/L0.8Gross Alpha minus Rn & U Precision (±)E900.1
11/23/10 15:22 / eppCi/L0.8Gross Alpha minus Rn & U MDC E900.1
11/24/10 01:48 / dmfpCi/L1.8Radium 226 E903.0
11/24/10 01:48 / dmfpCi/L0.22Radium 226 precision (±)E903.0
11/24/10 01:48 / dmfpCi/L0.09Radium 226 MDC E903.0
U 11/18/10 16:01 / dmfpCi/L0.02Thorium 230 E907.0
11/18/10 16:01 / dmfpCi/L0.07Thorium 230 precision (±)E907.0
11/18/10 16:01 / dmfpCi/L0.1Thorium 230 MDC E907.0
RADIONUCLIDES - SUSPENDED
U 12/02/10 02:17 / trspCi/L-0.005Radium 226 E903.0
12/02/10 02:17 / trspCi/L0.11Radium 226 precision (±)E903.0
12/02/10 02:17 / trspCi/L0.19Radium 226 MDC E903.0
U 11/30/10 08:42 / dmfpCi/L0.2Thorium 230 E907.0
11/30/10 08:42 / dmfpCi/L0.2Thorium 230 precision (±)E907.0
11/30/10 08:42 / dmfpCi/L0.2Thorium 230 MDC E907.0
PHYSICAL PROPERTIES
11/12/10 15:10 / lr10mg/L624Solids, Total Dissolved TDS @ 180 C A2540 C
11/12/10 15:36 / lr4mg/L40Solids, Total Suspended TSS @ 105 C A2540 D
METALS - DISSOLVED
12/13/10 20:25 / sml0.0003mg/L0.0077Uranium E200.8
METALS - SUSPENDED
12/09/10 01:20 / sml0.0003mg/LNDUranium E200.8
RADIONUCLIDES - DISSOLVED
11/23/10 15:22 / eppCi/L2.0Gross Alpha minus Rn & U E900.1
11/23/10 15:22 / eppCi/L0.8Gross Alpha minus Rn & U Precision (±)E900.1
11/23/10 15:22 / eppCi/L0.8Gross Alpha minus Rn & U MDC E900.1
11/24/10 01:48 / dmfpCi/L1.8Radium 226 E903.0
11/24/10 01:48 / dmfpCi/L0.22Radium 226 precision (±)E903.0
11/24/10 01:48 / dmfpCi/L0.09Radium 226 MDC E903.0
U 11/18/10 16:01 / dmfpCi/L0.02Thorium 230 E907.0
11/18/10 16:01 / dmfpCi/L0.07Thorium 230 precision (±)E907.0
11/18/10 16:01 / dmfpCi/L0.1Thorium 230 MDC E907.0
RADIONUCLIDES - SUSPENDED
U 12/02/10 02:17 / trspCi/L-0.005Radium 226 E903.0
12/02/10 02:17 / trspCi/L0.11Radium 226 precision (±)E903.0
12/02/10 02:17 / trspCi/L0.19Radium 226 MDC E903.0
U 11/30/10 08:42 / dmfpCi/L0.2Thorium 230 E907.0
11/30/10 08:42 / dmfpCi/L0.2Thorium 230 precision (±)E907.0
11/30/10 08:42 / dmfpCi/L0.2Thorium 230 MDC E907.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 3 of 12
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:Semi-Annual Surface Water
Lab ID:C10110506-002
Client Sample ID:Temp Blank
Collection Date:11/11/10
Matrix:Aqueous
Report Date:12/29/10
DateReceived:11/12/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
Prepared by Casper, WY Branch
PHYSICAL PROPERTIES
11/12/10 09:20 / kbh°C3.0Temperature E170.1
PHYSICAL PROPERTIES
11/12/10 09:20 / kbh°C3.0Temperature E170.1
PHYSICAL PROPERTIES
11/12/10 09:20 / kbh°C3.0Temperature E170.1
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
Page 4 of 12
Project:Semi-Annual Surface Water
Client:Denison Mines USA Corp
Work Order:C10110506
QA/QC Summary Report
12/29/10Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Prepared by Casper, WY Branch
Method: A2540 C Batch: 101112_2_SLDS-TDS-W
Sample ID: MBLK1_101112 11/12/10 15:00Method Blank Run: BAL-1_101112C
Solids, Total Dissolved TDS @ 180 C 10ND mg/L
Sample ID: LCS1_101112 11/12/10 15:00Laboratory Control Sample Run: BAL-1_101112C
Solids, Total Dissolved TDS @ 180 C 98 90 11010983 mg/L
Sample ID: C10110505-007AMS 11/12/10 15:11Sample Matrix Spike Run: BAL-1_101112C
Solids, Total Dissolved TDS @ 180 C 101 90 110105760 mg/L
Sample ID: C10110505-007AMSD 11/12/10 15:11Sample Matrix Spike Duplicate Run: BAL-1_101112C
Solids, Total Dissolved TDS @ 180 C 102 90 110 10100.35780 mg/L
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 5 of 12
Project:Semi-Annual Surface Water
Client:Denison Mines USA Corp
Work Order:C10110506
QA/QC Summary Report
12/29/10Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Prepared by Casper, WY Branch
Method: A2540 D Batch: R139896
Sample ID: MBLK1_11/12/10 15:31Method Blank Run: BAL-1_101112B
Solids, Total Suspended TSS @ 105 C 0.3ND mg/L
Sample ID: LCS1_11/12/10 15:31Laboratory Control Sample Run: BAL-1_101112B
Solids, Total Suspended TSS @ 105 C 86 60 1104.0172 mg/L
Sample ID: C10110506-001ADUP 11/12/10 15:37Sample Duplicate Run: BAL-1_101112B
Solids, Total Suspended TSS @ 105 C 254.0 4.942.0 mg/L
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 6 of 12
Project:Semi-Annual Surface Water
Client:Denison Mines USA Corp
Work Order:C10110506
QA/QC Summary Report
12/29/10Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Prepared by Casper, WY Branch
Method: E200.8 Batch: R140851
Sample ID: LRB 12/13/10 12:38Method Blank Run: ICPMS2-C_101213A
Uranium 1E-05ND mg/L
Sample ID: LFB 12/13/10 14:11Laboratory Fortified Blank Run: ICPMS2-C_101213A
Uranium 112 85 1150.000300.0559 mg/L
Sample ID: C10110506-001BMS 12/13/10 20:30Sample Matrix Spike Run: ICPMS2-C_101213A
Uranium 104 70 1300.000300.0597 mg/L
Sample ID: C10110506-001BMSD 12/13/10 20:34Sample Matrix Spike Duplicate Run: ICPMS2-C_101213A
Uranium 109 70 130 200.00030 3.80.0620 mg/L
Method: E200.8 Batch: 28258
Sample ID: MB-28258 12/09/10 01:07Method Blank Run: ICPMS4-C_101208A
Uranium 7E-05ND mg/L
Sample ID: LCS2-28258 12/09/10 01:11Laboratory Control Sample Run: ICPMS4-C_101208A
Uranium 97 85 1150.000300.0968 mg/L
Sample ID: C10110614-004HMS 12/09/10 01:56Sample Matrix Spike Run: ICPMS4-C_101208A
Uranium 110 70 1300.000300.0552 mg/L
Sample ID: C10110614-004HMSD 12/09/10 02:00Sample Matrix Spike Duplicate Run: ICPMS4-C_101208A
Uranium 109 70 130 200.00030 0.90.0547 mg/L
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 7 of 12
Project:Semi-Annual Surface Water
Client:Denison Mines USA Corp
Work Order:C10110506
QA/QC Summary Report
12/29/10Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Prepared by Casper, WY Branch
Method: E900.1 Batch: GA-0375
Sample ID: MB-GA-0375 11/23/10 15:22Method Blank Run: G5000W_101122A3
Gross Alpha minus Rn & U 3 pCi/L
Gross Alpha minus Rn & U Precision (±) 0.9 pCi/L
Gross Alpha minus Rn & U MDC 0.8 pCi/L
Sample ID: LCS-GA-0375 11/23/10 15:22Laboratory Control Sample Run: G5000W_101122A
Gross Alpha minus Rn & U 113 70 13032.4 pCi/L
Sample ID: C10110584-005CMS 11/23/10 15:22Sample Matrix Spike Run: G5000W_101122A
Gross Alpha minus Rn & U 88 70 13025.2 pCi/L
Sample ID: C10110584-005CMSD 11/23/10 17:11Sample Matrix Spike Duplicate Run: G5000W_101122A
Gross Alpha minus Rn & U 91 70 130 27.92.725.9 pCi/L
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 8 of 12
Project:Semi-Annual Surface Water
Client:Denison Mines USA Corp
Work Order:C10110506
QA/QC Summary Report
12/29/10Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Prepared by Casper, WY Branch
Method: E903.0 Batch: 28258
Sample ID: C10110614-004HMS 11/29/10 21:09Sample Matrix Spike Run: BERTHOLD 770-1_101122A
Radium 226 114 70 13014 pCi/L
Sample ID: C10110614-004HMSD 11/29/10 21:09Sample Matrix Spike Duplicate Run: BERTHOLD 770-1_101122A
Radium 226 113 70 130 22.67.115 pCi/L
Sample ID: LCS-28258 11/29/10 21:09Laboratory Control Sample Run: BERTHOLD 770-1_101122A
Radium 226 110 70 13016 pCi/L
Sample ID: MB-28258 11/29/10 21:09Method Blank Run: BERTHOLD 770-1_101122A3
Radium 226 -0.2 pCi/L U
Radium 226 precision (±) 0.1 pCi/L
Radium 226 MDC 0.3 pCi/L
Method: E903.0 Batch: RA226-5003
Sample ID: C10110468-001FMS 11/24/10 01:48Sample Matrix Spike Run: TENNELEC-3_101115C
Radium 226 103 70 13019 pCi/L
Sample ID: C10110468-001FMSD 11/24/10 01:48Sample Matrix Spike Duplicate Run: TENNELEC-3_101115C
Radium 226 101 70 130 210.318 pCi/L
Sample ID: MB-RA226-5003 11/24/10 03:38Method Blank Run: TENNELEC-3_101115C3
Radium 226 0.1 pCi/L U
Radium 226 precision (±) 0.08 pCi/L
Radium 226 MDC 0.10 pCi/L
Sample ID: LCS-RA226-5003 11/24/10 03:38Laboratory Control Sample Run: TENNELEC-3_101115C
Radium 226 105 70 1308.4 pCi/L
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration
Page 9 of 12
Project:Semi-Annual Surface Water
Client:Denison Mines USA Corp
Work Order:C10110506
QA/QC Summary Report
12/29/10Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Prepared by Casper, WY Branch
Method: E907.0 Batch: RA-TH-ISO-1289
Sample ID: LCS-RA-TH-ISO-1289 11/18/10 16:01Laboratory Control Sample Run: EGG-ORTEC_101117B
Thorium 230 94 70 1305.3 pCi/L
Sample ID: C10110614-001FMS 11/18/10 16:01Sample Matrix Spike Run: EGG-ORTEC_101117B
Thorium 230 99 70 13011 pCi/L
Sample ID: C10110614-001FMSD 11/18/10 16:01Sample Matrix Spike Duplicate Run: EGG-ORTEC_101117B
Thorium 230 90 70 130 42.18.710 pCi/L
Sample ID: MB-RA-TH-ISO-1289 11/18/10 16:01Method Blank Run: EGG-ORTEC_101117B3
Thorium 230 0.03 pCi/L U
Thorium 230 precision (±) 0.05 pCi/L
Thorium 230 MDC 0.08 pCi/L
Method: E907.0 Batch: 28258
Sample ID: C10110614-001HMS 11/30/10 08:42Sample Matrix Spike Run: EGG-ORTEC_101123D
Thorium 230 87 70 1307.4 pCi/L
Sample ID: C10110614-001HMSD 11/30/10 08:42Sample Matrix Spike Duplicate Run: EGG-ORTEC_101123D
Thorium 230 135 70 130 47.44412 pCi/L S
- Spike response is outside of the acceptance range for this analysis. Since the LCS, MS, and all tracer recoveries are acceptable the batch is approved.
Sample ID: LCS-28258 11/30/10 08:42Laboratory Control Sample Run: EGG-ORTEC_101123D
Thorium 230 109 70 13010 pCi/L
Sample ID: MB-28258 11/30/10 08:42Method Blank Run: EGG-ORTEC_101123D3
Thorium 230 -0.1 pCi/L U
Thorium 230 precision (±) 0.1 pCi/L
Thorium 230 MDC 0.2 pCi/L
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration S - Spike recovery outside of advisory limits.
U - Not detected at minimum detectable concentration
Page 10 of 12
Page 11 of 12
Page 12 of 12
1E-10
1E-09
1E-08
0.0000001
0.000001
(L
o
g

S
c
a
l
e
)

Westwater Creek Suspended Radionuclide Concentrations (uCi/ml)
U-Nat Th 230 Ra-226
ANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORTANALYTICAL SUMMARY REPORT
This report was prepared by Energy Laboratories, Inc., 2393 Salt Creek Hwy., Casper, WY 82601. Any exceptions
or problems with the analyses are noted in the Laboratory Analytical Report, the QA/QC Summary Report, or the
Case Narrative.
The results as reported relate only to the item(s) submitted for testing.
If you have any questions regarding these test results, please call.
Sample ID Client Sample ID Collect Date Receive Date Matrix Test
Report Approved By:
C10080251-001 BHV-1 08/02/10 10:40 08/06/10 Solid Uranium, Total
Digestion For RadioChemistry
Radium 226
C10080251-002 BHV-2 08/02/10 10:55 08/06/10 Solid Same As Above
C10080251-003 BHV-3 Black Mesa 08/02/10 11:20 08/06/10 Solid Same As Above
C10080251-004 BHV-4 08/02/10 13:12 08/06/10 Solid Same As Above
C10080251-005 BHV-5 08/02/10 12:45 08/06/10 Solid Same As Above
C10080251-006 BHV-6 08/02/10 12:55 08/06/10 Solid Same As Above
Denison Mines USA Corp
Project Name: Annual Soil Samples
Workorder No.: C10080251
6425 S Hwy 191
Blanding, UT 84511
September 17, 2010
Energy Laboratories, Inc. received the following 6 samples for Denison Mines USA Corp on 8/6/2010 for analysis.
Page 1 of 12
Project:Annual Soil Samples
CLIENT:Denison Mines USA Corp
Sample Delivery Group:C10080251 CASE NARRATIVE
09/17/10Report Date:
ORIGINAL SAMPLE SUBMITTAL(S)
All original sample submittals have been returned with the data package.
SAMPLE TEMPERATURE COMPLIANCE: 4°C (±2°C)
Temperature of samples received may not be considered properly preserved by accepted standards. Samples that are hand
delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun.
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters. Data provided by
this method for non potable waters should be viewed as inconsistent.
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours (2 days). The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay. Maximum recommended delay between end of exposure to
beginning of counting should not exceed 8 days.
SOIL/SOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated.
ATRAZINE, SIMAZINE AND PCB ANALYSIS
Data for PCBs, Atrazine and Simazine are reported from EPA 525.2. PCB data reported by ELI reflects the results for seven
individual Aroclors. When the results for all seven are ND (not detected), the sample meets EPA compliance criteria for
PCB monitoring.
SUBCONTRACTING ANALYSIS
Subcontracting of sample analyses to an outside laboratory may be required. If so, ENERGY LABORATORIES will utilize its
branch laboratories or qualified contract laboratories for this service. Any such laboratories will be indicated within the
Laboratory Analytical Report.
BRANCH LABORATORY LOCATIONS
eli-b - Energy Laboratories, Inc. - Billings, MT
eli-g - Energy Laboratories, Inc. - Gillette, WY
eli-h - Energy Laboratories, Inc. - Helena, MT
eli-r - Energy Laboratories, Inc. - Rapid City, SD
eli-t - Energy Laboratories, Inc. - College Station, TX
CERTIFICATIONS:
USEPA: WY00002, Radiochemical WY00937; FL-DOH NELAC: E87641, Radiochemical E871017; California: 02118CA;
Oregon: WY200001; Utah: 3072350515; Virginia: 00057; Washington: C1903
ISO 17025 DISCLAIMER:
The results of this Analytical Report relate only to the items submitted for analysis.
ENERGY LABORATORIES, INC. - CASPER,WY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities. Some results requested by the client may not be covered
under these certifications. All analysis data to be submitted for regulatory enforcement should be certified in the sample
state of origin. Please verify ELI's certification coverage by visiting www.energylab.com
ELI appreciates the opportunity to provide you with this analytical service. For additional information and services visit our
web page www.energylab.com.
Page 2 of 12
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:Annual Soil Samples
Lab ID:C10080251-001
Client Sample ID:BHV-1
Collection Date:08/02/10 10:40
Matrix:Solid
Report Date:09/17/10
DateReceived:08/06/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
METALS - TOTAL
08/25/10 22:35 / sml0.02mg/kg-dry1.61Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry1.3Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.2Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.09Radium 226 MDC E903.0
METALS - TOTAL
08/25/10 22:35 / sml0.02mg/kg-dry1.61Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry1.3Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.2Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.09Radium 226 MDC E903.0
METALS - TOTAL
08/25/10 22:35 / sml0.02mg/kg-dry1.61Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry1.3Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.2Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.09Radium 226 MDC E903.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 3 of 12
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:Annual Soil Samples
Lab ID:C10080251-002
Client Sample ID:BHV-2
Collection Date:08/02/10 10:55
Matrix:Solid
Report Date:09/17/10
DateReceived:08/06/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
METALS - TOTAL
08/25/10 22:43 / sml0.02mg/kg-dry2.20Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry1Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.2Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.09Radium 226 MDC E903.0
METALS - TOTAL
08/25/10 22:43 / sml0.02mg/kg-dry2.20Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry1Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.2Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.09Radium 226 MDC E903.0
METALS - TOTAL
08/25/10 22:43 / sml0.02mg/kg-dry2.20Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry1Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.2Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.09Radium 226 MDC E903.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 4 of 12
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:Annual Soil Samples
Lab ID:C10080251-003
Client Sample ID:BHV-3 Black Mesa
Collection Date:08/02/10 11:20
Matrix:Solid
Report Date:09/17/10
DateReceived:08/06/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
METALS - TOTAL
08/25/10 22:47 / sml0.02mg/kg-dry0.92Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry0.8Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 MDC E903.0
METALS - TOTAL
08/25/10 22:47 / sml0.02mg/kg-dry0.92Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry0.8Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 MDC E903.0
METALS - TOTAL
08/25/10 22:47 / sml0.02mg/kg-dry0.92Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry0.8Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 MDC E903.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 5 of 12
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:Annual Soil Samples
Lab ID:C10080251-004
Client Sample ID:BHV-4
Collection Date:08/02/10 13:12
Matrix:Solid
Report Date:09/17/10
DateReceived:08/06/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
METALS - TOTAL
08/25/10 22:51 / sml0.02mg/kg-dry2.50Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry1.3Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.2Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 MDC E903.0
METALS - TOTAL
08/25/10 22:51 / sml0.02mg/kg-dry2.50Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry1.3Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.2Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 MDC E903.0
METALS - TOTAL
08/25/10 22:51 / sml0.02mg/kg-dry2.50Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry1.3Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.2Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 MDC E903.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 6 of 12
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:Annual Soil Samples
Lab ID:C10080251-005
Client Sample ID:BHV-5
Collection Date:08/02/10 12:45
Matrix:Solid
Report Date:09/17/10
DateReceived:08/06/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
METALS - TOTAL
08/25/10 22:55 / sml0.02mg/kg-dry2.50Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry1.7Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.2Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 MDC E903.0
METALS - TOTAL
08/25/10 22:55 / sml0.02mg/kg-dry2.50Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry1.7Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.2Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 MDC E903.0
METALS - TOTAL
08/25/10 22:55 / sml0.02mg/kg-dry2.50Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry1.7Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.2Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 MDC E903.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 7 of 12
LABORATORY ANALYTICAL REPORT
Client:Denison Mines USA Corp
Project:Annual Soil Samples
Lab ID:C10080251-006
Client Sample ID:BHV-6
Collection Date:08/02/10 12:55
Matrix:Solid
Report Date:09/17/10
DateReceived:08/06/10
Analyses Result Units Analysis Date / ByRLMethod
MCL/
QCLQualifiers
METALS - TOTAL
08/25/10 22:59 / sml0.02mg/kg-dry1.28Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry0.8Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.09Radium 226 MDC E903.0
METALS - TOTAL
08/25/10 22:59 / sml0.02mg/kg-dry1.28Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry0.8Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.09Radium 226 MDC E903.0
METALS - TOTAL
08/25/10 22:59 / sml0.02mg/kg-dry1.28Uranium SW6020
RADIONUCLIDES - TOTAL
08/25/10 09:18 / trspCi/g-dry0.8Radium 226 E903.0
08/25/10 09:18 / trspCi/g-dry0.1Radium 226 precision (±)E903.0
08/25/10 09:18 / trspCi/g-dry0.09Radium 226 MDC E903.0
Report
Definitions:
RL - Analyte reporting limit.MCL - Maximum contaminant level.
QCL - Quality control limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 8 of 12
Project:Annual Soil Samples
Client:Denison Mines USA Corp
Work Order:C10080251
QA/QC Summary Report
09/17/10Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Method: E903.0 Batch: 27037
Sample ID: C10080309-004CMS 08/25/10 10:48Sample Matrix Spike Run: BERTHOLD 770-2_100819A
Radium 226 118 70 1309.9 pCi/g-dry
Sample ID: C10080309-004CMSD 08/25/10 10:48Sample Matrix Spike Duplicate Run: BERTHOLD 770-2_100819A
Radium 226 108 70 130 24.55.39.4 pCi/g-dry
Sample ID: LCS-27037 08/25/10 10:48Laboratory Control Sample Run: BERTHOLD 770-2_100819A
Radium 226 131 70 1301.9 pCi/g-dry S
- LCS response is outside of the acceptance range for this analysis. Since the MB, MS, and MSD are acceptable the batch is approved.
Sample ID: MB-27037 08/25/10 10:48Method Blank Run: BERTHOLD 770-2_100819A3
Radium 226 -0.0003 pCi/g-dry U
Radium 226 precision (±) 0.0002 pCi/g-dry
Radium 226 MDC 0.0004 pCi/g-dry
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration S - Spike recovery outside of advisory limits.
U - Not detected at minimum detectable concentration
Page 9 of 12
Project:Annual Soil Samples
Client:Denison Mines USA Corp
Work Order:C10080251
QA/QC Summary Report
09/17/10Report Date:
Analyte Result %REC RPDLow Limit High Limit RPDLimitRLUnits QualCount
Method: SW6020 Batch: 27037
Sample ID: MB-27037 08/25/10 22:06Method Blank Run: ICPMS4-C_100825A
Uranium 4E-050.0001 mg/kg-dry
Sample ID: LCS2-27037 08/25/10 22:10Laboratory Control Sample Run: ICPMS4-C_100825A
Uranium 110 75 1250.0155.51 mg/kg-dry
Sample ID: C10080309-004CMS 08/25/10 23:24Sample Matrix Spike Run: ICPMS4-C_100825A
Uranium 118 75 1250.0157.77 mg/kg-dry
Sample ID: C10080309-004CMSD 08/25/10 23:28Sample Matrix Spike Duplicate Run: ICPMS4-C_100825A
Uranium 120 75 125 200.015 1.77.91 mg/kg-dry
Qualifiers:
RL - Analyte reporting limit.ND - Not detected at the reporting limit.
MDC - Minimum detectable concentration
Page 10 of 12
Page 11 of 12
Page 12 of 12
1r 2r 3r 4r 5r 6r
1-Jul-98 1.6 0.7 0.5 1 3
24-Aug-99 2.27 0.78 0.53 0.84 3.27
1-Dec-00 1.51 0.81 DNA 0.83 2.81
23-Aug-01 1 0.6 0.4 0.9 1.2
1-Aug-02 1.3 0.9 0.5 1.2 2.4
5-Aug-03 0.8 0.6 0.5 0.6 2.8 0.60
9-Aug-04 0.6 0.4 0.4 0.6 1 0.90
3-Aug-05 0.9 0.7 0.6 0.6 0.7 1.00
7-Aug-06 0.7 0.44 0.41 0.52 1.4 0.78
8-Aug-07 1.1 0.7 0.2 0.5 1.1 0.80
20-Aug-08 0.9 0.3 0.6 0.5 0.8 0.50
10-Aug-09 0.8 0.7 0.7 0.8 2.6 0.50
2-Aug-10 1.3 1 0.8 1.3 1.7 0.80
1u 2u 3u 4u 5u 6u1-Jul-98 3.05 0.58 0.45 1.19 2.76
24-Aug-99 1.74 0.84 0.42 0.77 3.15
1-Dec-00 1.21 0.53 DNA 1.22 3.25
23-Aug-01 1 0.3 0.3 1 1.1
1-Aug-02 1.35 0.524 0.297 1.49 2.81
5-Aug-03 0.99 0.79 0.33 0.43 4.2 0.53
9-Aug-04 0.61 0.25 0.22 0.51 1.4 1.4
3-Aug-05 0.96 0.34 0.27 0.38 0.41 1.2
7-Aug-06 0.76 0.25 0.25 0.48 1.3 0.65
8-Aug-07 2.37 0.53 0.55 0.74 1.45 0.93
20-Aug-08 1.23 0.43 0.98 0.79 1.33 0.67
10-Aug-09 0.88 0.54 1.08 0.61 2.98 0.81
2-Aug-10 1.09 1.49 0.62 1.69 1.69 0.87
WHITE MESA MILL
Soil Sampling Results
(VALUES) x 10-3 uCi/kg

Date
BHV-1 BHV-2 BHV-3 BHV-4 BHV-5 BHV-6
Ra-226 U-Nat Ra-226 U-Nat Ra-226 U-Nat Ra-226 U-Nat Ra-226 U-Nat Ra-226 U-Nat
9/7/80 0.650 0.420 0.340 0.420 0.420 0.420 0.410 12.194 0.230 14.891 - -
9/8/81 0.400 1.800 0.300 0.600 0.300 0.600 0.200 3.000 0.300 0.600 - -
12/3/81 0.790 0.770 0.440 0.560 0.890 0.420 0.750 0.630 0.550 0.420 - -
6/30/82 0.423 0.384 0.412 0.180 0.265 0.207 0.478 0.260 0.449 0.216 - -
5/5/83 0.471 0.410 0.569 0.550 0.461 0.340 0.643 0.340 0.147 0.140 - -
6/4/84 0.713 0.866 0.618 0.683 0.489 0.471 0.124 0.324 0.132 0.310 - -
10/12/84 2.960 0.886 2.330 0.069 2.880 0.721 3.490 0.804 2.550 0.817 - -
8/28/85 1.630 0.800 2.190 0.424 2.270 0.424 4.330 0.294 1.280 0.577 - -
8/1/86 0.369 0.654 0.466 0.866 0.382 0.694 0.396 0.826 0.728 0.836 - -
8/17/87 0.600 0.800 1.500 0.900 0.800 0.600 1.200 0.700 1.500 1.300 - -
8/28/88 1.500 1.600 1.300 0.700 0.600 0.900 1.000 1.300 3.800 5.000 - -
8/25/88 1.200 1.600 1.100 3.000 0.800 1.000 1.100 1.400 2.900 5.700 - -
8/1/90 2.900 5.800 1.000 1.400 0.800 1.400 1.800 1.300 3.700 3.200 - -
8/5/91 3.900 8.800 1.700 2.600 2.600 5.700 1.800 2.600 2.500 4.400 - -
8/13/92 1.200 2.200 0.900 1.400 0.800 1.200 0.900 0.900 1.100 1.800 - -
8/13/93 2.000 1.700 1.400 1.700 1.100 1.900 0.800 1.600 4.800 3.500 - -
8/3/94 1.000 1.600 0.700 0.800 0.700 0.900 0.700 1.100 3.000 3.800 - -
8/28/95 2.810 4.700 0.680 0.200 0.880 0.650 0.580 0.240 2.800 1.600 - -
8/13/96 1.700 2.150 0.600 0.460 0.300 0.210 0.500 0.520 1.900 2.010 - -
8/1/97 0.540 0.310 0.560 0.160 0.410 0.270 0.410 0.260 1.700 1.500 - -
7/1/98 1.600 3.050 0.700 0.580 0.500 0.450 1.000 1.190 3.000 2.760 - -
8/24/99 2.270 1.740 0.780 0.840 0.530 0.420 0.840 0.770 3.270 3.150 - -
12/1/00 1.510 1.210 0.810 0.530 * * 0.830 1.220 2.810 3.250 - -
8/23/01 1.000 1.000 0.600 0.300 0.400 0.300 0.900 1.000 1.200 1.100 - -
8/1/02 1.300 1.350 0.900 0.524 0.500 0.297 1.200 1.490 2.400 2.810 60.00 0.550
8/5/03 0.800 0.990 0.600 0.790 0.500 0.330 0.600 0.4300 0.280 0.420 0.600 0.530
8/9/04 0.600 0.610 0.400 0.250 0.400 0.220 0.600 0.5100 1.000 1.400 0.900 1.400
8/3/05 0.900 0.960 0.700 0.340 0.600 0.270 0.600 0.3800 0.700 0.410 1.000 1.200
8/7/06 0.700 0.760 0.440 0.250 0.410 0.250 0.520 0.480 1.400 1.300 0.780 0.650
8/8/07 1.100 2.370 0.700 0.530 0.200 0.550 0.500 0.740 1.100 1.450 0.800 0.930
8/20/08 0.900 1.230 0.300 0.430 0.600 0.980 0.500 0.790 0.800 1.330 0.500 0.670
8/10/09 0.800 0.880 0.700 0.540 0.700 1.080 0.800 0.610 2.600 2.980 0.500 0.810
8/2/10 1.3 1.09 1.0 1.49 0.8 0.62 1.3 1.69 1.7 1.69 0.8 0.87
*Data not available.