DRC-2014-002563 - 0901a0688041a9bc

1 ENERGYFUELS
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energyfuels.com
6V of
VIA EMAIL AND OVERNIGHT DELIVERY
March 27, 2014 DRC-2014-002563
Mr. Bryce Bird
Director, Utah Division of Air Quality
State of Utah Department of Environmental Quality
195 North 1950 West
Salt Lake City, UT84116
Re: White Mesa Uranium Mill,
National Emissions Standards for Radon Emission from Operating Mill Tailings
Transmittal of 2013 Annual Radon Flux Monitoring Report for Tailings Impoundment 3
Dear Mr. Bird:
This letter transmits Energy Fuels Resources (USA) Inc's ("EFRI's") radon-222 flux monitoring report
for the year 2013 for tailings impoundment 3 ("Cell 3") at the White Mesa Uranium Mill (the "Mill").
The result of the 2013 radon-222 flux monitoring for Cell 3 was 19.4 pCi nf2 s"1 (averaged over three
monitoring events) and therefore was in compliance the standard set out in 40 CFR 61.252 of 20 pCi rn2
s_1in 2013.
For the past several years, the Mill has been experiencing drought conditions, which were especially
severe during 2012 and the first half of 2013. Per 40 CFR 61.253, EFRI is permitted to monitor radon
flux one or more times per year. For the 2013 operating year, EFRI chose to monitor Cell 3 three times
to capture a wider range of climatic conditions due to the drought. Therefore, Cell 3 was monitored on
June 11, 2013, September 23, 2013, and December 4, 2013. Consistent with 40 CFR 61.253, EFRI
notified the Utah Division of Air Quality and the U.S Environmental Protection Agency 30 days prior to
each Cell 3 sampling event, as required, in letters dated April 11, 2013, July 18, 2013, and September 5,
2013.
The results from the Cell 3 June 2013, September 2013, and December 2013 sampling events are
included as Attachment 1, Attachment 2, and Attachment 3, respectively, to this letter.
Please contact me at 303-389-4167 should you have any questions or need additional information.
Sincerely,
ENERGY FUELS RESOURCES (USA) INC.
Jaime Massey
Regulatory Compliance Specialist
N:\WMM\Required Reports\NESHAPS Reports\2013 NESHAPs Annual\Cell 3\Cell 3 2013 Annual Report.doc
Letter to R. Lundberg
March 27, 2014
Page 2
cc: David C. Frydenlund
Phil Goble, Utah DRC
Dan Hillsten
Rusty Lundberg, Utah DRC
Jay Morris, Utah DAQ
Harold R. Roberts
David E. Turk
Kathy Weinel
Frank Filas
Director, Air and Toxics Technical Enforcement Program, Office of Enforcement, Compliance
and Environmental Justice, U. S. Environmental Protection Agency
Letter to R. Lundberg
March 27, 2014
Page 3
Certification:
"I certify under penalty of law that I have personally examined and am familiar with the
information submitted herein and based on my inquiry of those individuals immediately
responsible fpr obtaining the information, I believe that the submitted information is true,
accurate, ai#i complete. I am aware that there are significant penalties for submitting
fals# information including the possibility of fine and imprisonment. See, 18 U.S.C.
David C. Frydenlund
Senior Vice President, General Counsel & Corporate Secretary
ATTACHMENT 1
Tellco Report on Annual Radon Flux Monitoring
June 2013
National Emission Standards for Hazardous Air Pollutants
2013 Radon Flux Measurement Program
White Mesa Mill
6425 South Highway 191
Blanding, Utah 84511
June 2013 Sampling Results
Cell 3
Prepared for: Energy Fuels Resources (USA) Inc.
6425 S. Highway 191
P.O. Box 809
Blanding, Utah 84511
Prepared by: Tellco Environmental
P.O. Box 3987
Grand Junction, Colorado 81502
TABLE OF CONTENTS
Page
1. INTRODUCTION 1
2. SITE HISTORY AND DESCRIPTION 1
3. REGULATORY REQUIREMENTS FOR THE SITE 2
4. SAMPLING METHODOLOGY 2
5. FIELD OPERATIONS 3
5.1 Equipment Preparation 3
5.2 Sample Locations, Identification, and Placement 3
5.3 Sample Retrieval 3
5.4 Environmental Conditions 4
6. SAMPLE ANALYSIS 4
6.1 Apparatus 4
6.2 Sample Inspection and Documentation 4
6.3 Background and Sample Counting 5
7. QUALITY CONTROL (QC) AND DATA VALIDATION 5
7.1 Sensitivity 5
7.2 Precision 5
7.3 Accuracy 6
7.4 Completeness 6
8. CALCULATIONS 6
9. RESULTS 7
9.1 Mean Radon Flux 7
9.2 Site Results 8
References 9
Figure 1 10
Appendix A. Charcoal Canister Analyses Support Documents
Appendix B. Recount Data Analyses
Appendix C. Radon Flux Sample Laboratory Data, Including Blanks
Appendix D. Sample Locations Map (Figure 2)
i
1. INTRODUCTION
During June 10-12,2013, Tellco Environmental, LLC (Tellco) of Grand Junction, Colorado, provided
support to Energy Fuels Resources (USA) Inc. (Energy Fuels) to conduct radon flux measurements
regarding the required National Emission Standards for Hazardous Air Pollutants (NESHAPs) Radon
Flux Measurements. These measurements are required of Energy Fuels to show compliance with
Federal Regulations (further discussed in Section 3 below). The standard is not an average per facility,
but is an average per radon source. The standard allows mill owners or operators the option of either
making a single set of measurements or making measurements over a one year period (e.g., weekly,
monthly, or quarterly intervals).
Previously during 2012, Energy Fuels with support from Tellco, conducted radon flux measurements
in June 2012 on Cell 2 and Cell 3 with the intention of performing a single set of measurements to
represent the year 2012. The arithmetic average radon flux rate of the June 2012 sampling for Cell 3
was below the regulatory standard of 20 picoCuries per square meter per second (pCi/m2-s); however,
the radon flux measurements for Cell 2 exceeded the standard and in response, Energy Fuels
conducted additional radon flux measurements for Cell 2 in September, October, and November 2012.
No additional sampling of Cell 3 was performed in 2012 because the average radon flux rate
measured by the June 2012 sampling was below the regulatory standard.
Energy Fuels is presently on a monthly radon flux sampling plan for Cell 2 beginriing in April 2013
and the results of the Cell 2 monthly sampling is presented in separate reports; this report presents
only the radon flux measurements results for Cell 3 for June 2013. Tellco was contracted to provide
radon canisters, equipment, and canister placement personnel as well as lab analysis of samples.
Energy Fuels personnel provided support for loading and unloading charcoal from the canisters. This
report details the procedures employed by Energy Fuels and Tellco to obtain the results presented in
Section 9.0 of this report.
2. SITE DESCRIPTION
The White Mesa Mill facility is located in San Juan County in southeastern Utah, six miles south of
Blanding, Utah. The mill began operations in 1980 for the purpose of extracting uranium and
vanadium from feed stocks. Processing effluents from the operation are deposited in four lined cells,
which vary in depth. Cell I, Cell 4A, and Cell 4B did not require radon flux sampling, as explained in
Section 3 below.
Cell 2 has a total area of approximately 270,624 square meters (m2) and is comprised of one region
which requires NESHAPs radon flux monitoring. This cell has been filled and covered with interim
soil cover of varying thickness; there are no exposed tailings or standing liquid within Cell 2.
Cell 3 is nearly filled with tailings sand and is undergoing pre-closure activities. This cell, which has
a total area of 288,858 m2, is comprised of two source regions that require NESHAPs radon
monitoring: approximately 231,175 m of soil cover of varying thickness and approximately 17,558
m2 of exposed tailings "beaches". The remaining approximately 40,125 m2 was covered by standing
liquid in lower elevation areas. The size of the beaches region during June 2013 is smaller than it was
in 2012, while size of the covered region is larger than in 2012.
i
3. REGULATORY REQUIREMENTS FOR THE SITE
Radon emissions from the uranium mill tailings at this site are regulated by the State of Utah's
Division of Radiation Control and administered by the Utah Division of Air Quality under generally
applicable standards set by the Environmental Protection Agency (EPA) for Operating Mills.
Applicable regulations are specified in 40 CFR Part 61, Subpart W, National Emission Standards for
Radon Emissions from Operating Mill Tailings, with technical procedures in Appendix B. At present,
there are no Subpart T uranium mill tailings at this site. These regulations are a subset of the
NESHAPs. According to subsection 61.252 Standard, (a) radon-222 emissions to ambient air from an
existing uranium mill tailings pile shall not exceed an average of 20 pCi/m2-s for each pile or region.
Subsection 61.253, Determining Compliance, states that: "Compliance with the emission standard in
this subpart shall be deterrnined annually through the use of Method 115 of Appendix B." The
repaired Cell 4A, and newly constructed Cell 4B, were both constructed after December 15, 1989
and each was constructed with less than 40 acres surface area. Cell 4A and 4B comply with the
requirements of 40 CFR 61.252(b), therefore no radon flux measurements are required on either
Cell 4Aor4B.
4. SAMPLING METHODOLOGY
Radon emissions were measured using Large Area Activated Charcoal Canisters (canisters) in
conformance with 40 CFR, Part 61, Appendix B, Method 115, Restrictions to Radon Flux
Measurements, (EPA, 2012). These are passive gas adsorption sampling devices used to determine
the flux rate of radon-222 gas from a surface. The canisters were constructed using a 10-inch
diameter PVC end cap containing a bed of 180 grams of activated, granular charcoal. The prepared
charcoal was placed in the canisters on a support grid on top of a lA inch thick layer of foam and
secured with a retaining ring under 1XA inches of foam (see Figure 1, page 11).
Two hundred sampling locations were distributed throughout Cell 3 (comprised of two source regions
requiring monitoring) as depicted on the Sample Locations Map (see Figure 2, Appendix D). Each
charged canister was placed directly onto the surface (open face down) and exposed to the surface for
24 hours. Radon gas adsorbed onto the charcoal and the subsequent radioactive decay of the
entrained radon resulted in radioactive lead-214 and bismuth-214. These radon progeny isotopes emit
characteristic gamma photons that can be detected through gamma spectroscopy. The original total
activity of the adsorbed radon was calculated from these gamma ray measurements using calibration
factors derived from cross-calibration of standard sources containing known total activities of
radium-226 with geometry identical to the counted samples and from the principles of radioactive
decay.
After approximately 24 hours, the exposed charcoal was transferred to a sealed plastic sample
container (to prevent radon loss and/or further exposure during transport), identified and labeled, and
transported to the Tellco laboratory in Grand Junction, Colorado for analysis. Upon completion of on-
site activities, the field equipment was alpha and beta-gamma scanned for possible contamination
resulting from fieldwork activities. All field equipment was surveyed by Energy Fuels Radiation
Safety personnel and released for unrestricted use. Tellco personnel maintained custody of the
samples from collection through analysis.
2
5. FIELD OPERATIONS
5.1 Equipment Preparation
All charcoal was dried at 110°C before use in the field. Unused charcoal and recycled charcoal were
treated the same. 180-gram aliquots of dried charcoal were weighed and placed in sample containers.
Proper balance operation was verified daily by checking a standard weight. The balance readout
agreed with the known standard weight to within ±0.1 percent.
After acceptable balance check, empty containers were individually placed on the balance and the
scale was re-zeroed with the container on the balance. Unexposed and dried charcoal was carefully
added to the container until the readout registered 180 grams. The lid was immediately placed on the
container and sealed with plastic tape. The balance was checked for readout drift between readings.
Sealed containers with unexposed charcoal were placed individually in the shielded counting well,
with the bottom of the container centered over the detector, and the background count rate was
documented. Three five-minute background counts were conducted on ten percent of the containers,
selected at random to represent the "batch". If the background counts were too high to achieve an
acceptable lower limit of detection (LLD), the entire charcoal batch was labeled non-confonning and
recycled through the heating/drying process.
5.2 Sample Locations, Identification, and Placement
On June 10, 2013, one hundred sampling locations were spread out throughout the Cell 3 Beaches
region; and on June 11, 2013, one hundred sampling locations were spread out throughout the Cell 3
Covered region. A sample identification number (ID) was assigned to every sample point, using a
sequential alphanumeric system indicating the charcoal batch and physical location within the region
(e.g., D01...D100). This ED was written on an adhesive label and affixed to the top of the canister.
The sample ID, date, and time of placement were recorded on the radon flux measurements data
sheets for the set of one hundred measurements.
Prior to placing a canister at each sample location, the retaining ring, screen, and foam pad of each
canister were removed to expose the charcoal support grid. A pre-measured charcoal charge was
selected from a batch, opened and distributed evenly across the support grid. The canister was then
reassembled and placed face down on the surface at each sampling location. Care was exercised not
to push the device into the soil surface. The canister rim was "sealed" to the surface using a berm of
local borrow material.
Nine canisters (blanks) were similarly processed and the canisters were kept inside an airtight plastic
bag during the 24-hour testing period. One of the five blank canisters for the Cell 3 Covered region (F
Blank 4) was inadvertently not loaded with charcoal during the loading process.
5.3 Sample Retrieval
At the end of each of the 24-hour testing periods, the canisters were retrieved, disassembled and each
charcoal sample was individually poured through a funnel into a container. Identification numbers
were transferred to the appropriate container, which was sealed and placed in a box for transport.
3
Retrieval date and time were recorded on the same data sheets as the sample placement information.
The blank samples were similarly processed.
During retrieval of the canisters from the Cell 3 Beaches region on June 11, 2013, one canister (D84)
was found to have not been properly sealed during placement; the charcoal from D84 was
containerized but that sample was considered void. All of the charcoal samples from the Cell 3
Covered region were successfully retrieved on June 12, 2013 and containerized during the unloading
process.
5.4 Environmental Conditions
A rain gauge and thermometer were in place at the White Mesa Mill site to monitor rainfall and air
temperatures during sampling in order to ensure compliance with the regulatory measurement criteria.
In accordance with 40 CFR, Part 61, Appendix B, Method 115:
• Measurements were not initiated within 24 hours of rainfall.
• No rainfall occurred during the sampling periods.
• The minimum ambient air temperature during the sampling periods was 54 degrees F.
6. SAMPLE ANALYSIS
6.1 Apparatus
Apparatus used for the analysis:
• Single- or multi-channel pulse height analysis system, Ludlum Model 2200 with a
Teledyne 3" x 3" sodium iodide, thallium-activated (Nal(Tl)) detector.
• Lead shielded counting well approximately 40 cm deep with 5-cm thick lead walls and a 7-
cm thick base and 5 cm thick top.
• National Institute of Standards and Technology (NIST) traceable aqueous solution radium-
226 absorbed onto 180 grams of activated charcoal.
• Ohaus Model C501 balance with 0.1 -gram sensitivity.
6.2 Sample Inspection and Documentation
Once in the laboratory, the integrity of each charcoal container was verified by visual inspection of the
plastic container. Laboratory personnel checked for damaged or unsealed containers and verified that
the data sheet was complete.
No damaged or unsealed containers were observed during inspection at the Tellco analytical
laboratory. A total of 199 radon flux samples and nine blank samples were verified as valid.
4
6.3 Background and Sample Counting
The gamma ray counting system was checked daily, including background and radium-226 source
measurements prior to and after each counting session. Based on calibration statistics, using two
sources with known radium-226 content, background and source control limits were established for
each LuaTurn/Teledyne counting system with shielded well (see Appendix A).
Gamma ray counting of exposed charcoal samples included the following steps:
• The length of count time was determined by the activity of the sample being analyzed,
according to a data quality objective of a minimum of 1,000 accrued counts for any given
sample.
• The sample container was centered on the Nal detector and the shielded well door was
closed.
• The sample was counted over a determined count length and then the mid-sample count
time, date, and gross counts were documented on the radon flux measurements data sheet
and used in the calculations.
• The above steps were repeated for each exposed charcoal sample.
• Approximately 10 percent of the containers counted were selected for recounting. These
containers were recounted within a few days following the original count.
7. QUALITY CONTROL (QC) AND DATA VALIDATION
Charcoal flux measurement QC samples included the following intra-laboratory analytical frequency
objectives:
• Blanks, 5 percent, and
• Recounts, 10 percent
All sample data were subjected to validation protocols that included assessments of sensitivity,
precision, accuracy, and completeness. As described below, all Method 115-required data quality
objectives (EPA, 2012) were attained.
7.1 Sensitivity
A total of nine blanks were analyzed by measuring the radon progeny activity in samples subjected to
all aspects of the measurement process, excepting exposure to the source region. These blank sample
measurements comprised approximately five percent of the field measurements. The results of the
blank sample radon flux rates ranged from -0.01 to 0.04 pCi/m2-s, with an average of approximately
0.02 pCi/m2-s. The lower limit of detection (LLD) was approximately 0.05 pCi/m2-s.
7.2 Precision
Twenty recount measurements, distributed throughout the sample set, were performed by replicating
analyses of individual field samples (see Appendix B). These recount measurements comprised
approximately 10 percent of the total number of samples analyzed. The precision of all recount
5
measurements, expressed as relative percent difference (RPD), ranged from less than 0.1 percent to
7.5 percent with an overall average precision of approximately 2.6 percent RPD. This complies with
the precision objective of 10 percent.
7.3 Accuracy
Accuracy of field measurements was assessed daily by counting two laboratory control samples with
known Ra-226 content. Accuracy of these lab control sample measurements, expressed as percent
bias, ranged from approximately -0.7 percent to +1.1 percent. The arithmetic average bias of the lab
control sample measurements was approximately 0.1 percent (see Appendix A). This complies with
the accuracy objective of +/-10 percent.
7.4 Completeness
A combined total of 199 samples from the Cell 3 Beaches and Covered regions were verified,
representing approximately 99.5 percent completeness, which complies with the completeness
objective of 85 percent.
8. CALCULATIONS
Radon flux rates were calculated for charcoal collection samples using calibration factors derived
from cross-calibration to sources with known total activity with identical geometry as the charcoal
containers. A yield efficiency factor was used to calculate the total activity of the sample charcoal
containers. Individual field sample result values presented were not reduced by the results of the field
blank analyses.
In practice, radon flux rates were calculated by a database computer program. The algorithms utilized
by the data base program were as follows:
Equation 8.1:
2 M
pCi Rn-222/m sec = pTs*A*b*0[JSW^K
where: N = net sample count rate, cpm under 220-662 keV peak
Ts = sample duration, seconds
b = instrument calibration factor, cpm per pCi; values used:
0.1699, for M-01/D-21 and
0.1702, for M-02/D-20
d = decay time, elapsed hours between sample mid-time and count mid-time
A = area of the canister, m2
Equation 8.2:
Gross Sample, cpm Background Sample,cpm
+ —
U SampleCount, t, min Background Count, t, mm
Error,2cr = 2 x — x Sample Concentration
Net,cpm
Equation 8.3:
TTn_ 2.71+(4.65VSJ
LLD~ [Ts*A*b*0.5<^75)]
where: 2.71 = constant
4.65 = confidence interval factor
Sb = standard deviation of the background count rate
Ts = sample duration, seconds
b = instrument calibration factor, cpm per pCi; values used:
0.1699, for M-01/D-21 and
0.1702, for M-02/D-20
d = decay time, elapsed hours between sample mid-time and count mid-time
A = area of the canister, m2
9. RESULTS
9.1 Mean Radon Flux
Referencing 40 CFR, Part 61, Subpart W, Appendix B, Method 115 - Monitoring for Radon-222
Emissions, Subsection 2.1.7 - Calculations, "the mean radon flux for each region of the pile and for
the total pile shall be calculated and reported as follows:
(a) The individual radon flux calculations shall be made as provided in Appendix A EPA
86(1). The mean radon flux for each region of the pile shall be calculated by suniming all
individual flux measurements for the region and dividing by the total number of flux
measurements for the region.
(b) The mean radon flux for the total uranium mill tailings pile shall be calculated as follows:
JiAi ± ... LA? r+1... JA,-
Js =
At
Where: Js = Mean flux for the total pile (pCi/m2-s)
Ji - Mean flux measured in region i (pCi/m2-s)
A, = Area of region i (m2)
At = Total area of the pile (m2)"
40 CFR 61, Subpart W, Appendix B, Method 115, Subsection 2.1.8, Reporting states "The results of
individual flux measurements, the approximate locations on the pile, and the mean radon flux for each
region and the mean radon flux for the total stack [pile] shall be included in the emission test report. Any
condition or unusual event that occurred during the measurements that could significantly affect the results
should be reported."
7
9.2 Site Results
Site Specific Sample Results (reference Appendix C)
(a) The mean radon flux for each region withm Cell 3 is as follows:
Cell 3 - Beaches Region = 56.6 pCi/m2-s (based on 17,558 m2 area)
Cell 3 - Covered Region = 24.1 pCi/m2-s (based on 231,175 m2 area)
Note: Reference Appendix C of this report for the entire summary of individual measurement results.
(b) Using the data presented above, the calculated mean radon flux for Cell 3 is, as follows:
Cell 3 = 22.7 pCi/m2-s
f56.6¥17.558VH24.1¥231.175>} =22.7
288,858
As shown above, the arithmetic mean radon flux of the June 2013 samples for Cell 3 at Energy
Fuels White Mesa milling facility exceeds the NRC and EPA standard of 20 pCi/m2-s. The
extremely dry weather at the site for the past several years was especially severe during 2012 and
seems to be continuing now in 2013. The result of this dry weather is likely a lowered water table in
the containment ceil and reduced moisture content in surface soils, which could result in increased
radon flux rates at the site. The flux rates at a few of the sample locations on the Cell 3 Covered
region were unusually high, and might be the result of tailings spills during previous site activities
or because the sample locations were in an area where the interim cover layer was thin.
Appendix C is a summary of individual measurement results, including blank sample analysis.
Sample locations are depicted on Figure 2, which is included in Appendix D. The map was produced
by Tellco.
a
References
U. S. Environmental Protection Agency, Radon Flux Measurements on Gardinier and Royster
Phosphogypsum Piles Near Tampa and Mulberry, Florida, EPA 520/5-85-029, NTIS #PB86-
161874, January 1986.
U. S. Environmental Protection Agency, Title 40, Code of Federal Regulations, July 2012.
U. S. Nuclear Regulatory Commission, Radiological Effluent and Environmental Monitoring at
Uranium Mills, Regulatory Guide 4.14, April 1980.
U. S. Nuclear Regulatory Cornmission, Title 10, Code of Federal Regulations, Part 40, Appendix A,
January 2013.
9
Figure 1
Large Area Activated Charcoal Canisters Diagram
1/4 in Vent Holt
t '2-.II Tltic* 0>
I in Tn ek
Scrubbm P*<S
l/Z in. rpick
Sieutsct Pal
Cp3! •v.-.
\
in-to »s
PVC En* Cart
FlCiffE . I Largt-Arta Ratfon Collector
10
APpendix A
C^coaI Caster Analyses Snn
™mym Support Documents
ACCURACY APPRAISAL TABLE
JUNE 2013 SAMPLING
ENERGY FUELS RESOURCES (USA) INC.
WHITE MESA MILL, BLANDING, UTAH
2013 NESHAPs RADON FLUX MEASUREMENTS
CELL 3
SAMPLING DATES: 6/10/13-6/12/13
SYSTEM
LD.
DATE Bkg Counts
#1
(1 min. each)
#2 #3
Source Counts {1 min
#1 #2
each)
#3
AVG NET
cpm
YIELD
cpm/pCi
FOUND
pCi
SOURCE
ID
KNOWN
pCi
% BIAS
M-01/D-21 6/14/2013 133 124 97 10164 9958 10239 10002 0.1699 58872 GS-04 59300 -0.7%
M-01/D-21 6/14/2013 140 142 124 10352 10271 10080 10099 0.1699 59441 GS-04 59300 0.2%
M-01/D-21 6/15/2013 141 130 139 10420 10274 10286 10190 0.1699 59976 GS-04 59300 1.1%
M-01/D-21 6/15/2013 134 133 122 10311 10356 10227 10168 0.1699 59849 GS-04 59300 0.9%
M-01/D-21 6/14/2013 133 124 97 10198 10137 10259 10080 0.1699 59329 GS-05 59300 0.0%
M-01/D-21 6/14/2013 140 142 124 10152 10100 10344 10063 0.1699 59231 GS-05 59300 -0.1%
M-01/D-21 6/15/2013 141 130 139 10242 10021 10261 10038 0.1699 59082 GS-05 59300 -0.4%
M-01/D-21 6/15/2013 134 133 122 10153 10121 10317 10067 0.1699 59254 GS-05 59300 -0.1%
M-02/D-20 6/14/2013 113 114 106 10382 10435 10116 10200 0.1702 59929 GS-04 59300 1.1%
M-02/D-20 6/14/2013 118 120 126 10209 10307 10227 10126 0.1702 59497 GS-04 59300 0.3%
M-02/D-20 6/15/2013 127 129 121 10254 10282 10154 10104 0.1702 59367 GS-04 59300 0.1%
M-02/D-20 6/15/2013 108 123 117 10267 10321 10214 10151 0.1702 59644 GS-04 59300 0.6%
M-02/D-20 6/14/2013 113 114 106 10237 10123 10167 10065 0.1702 59134 GS-05 59300 -0.3%
M-02/D-20 6/14/2013 118 120 126 10333 10119 10100 10063 0.1702 59123 GS-05 59300 -0.3%
M-02/D-20 6/15/2013 127 129 121 10034 10305 10243 10068 0.1702 59156 GS-05 59300 -0.2%
M-02/D-20 6/15/2013 108 123 117 10312 10098 10177 10080 0.1702 59222 GS-05 59300 -0.1%
AVERAGE PERCENT BIAS FOR ALL ANALYTICAL SESSIONS: 0.1%
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: W Vy \\<> tAe6^
CLIENT:
System ID
Scaler S/N:
Calibration Check Lop
_ Calibration Date: b/lH f I 3 Due Date: (*/\H/{t\
High Voltage: 10 ~2~S" Window: 4.42 Thrshld: 2.20
Source ID/SN: rUW/^"°4 Source Activity: 5^-3 Kpli Detector S/N: D^lS^"^
Blank Canister Bkgd. Range, cpm: 2 o =_ to 1^ 3g
Gross Source Range, cpm:
io i~7 /
Technician:
All counts times are one minute.
Date By Background Counts (1 min. each)
#1 #2 #3 Avf #1
Source Counts (1 min. each)
#2 #3 Average
ok?
Y/N
z 07
5 (4^ tog-?) IOOSO
130 iT7
133 13Q 2
Y/N: Y = average background and source cpm fails within the control limits.
N average background and source cpm docs not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: \k\ k\V* M.e4A H"\ U } T*> l<\V\ A \ r\ j -} U I
CLIENT: E^^M Fu e\ $ Q-CSO HfC^-S
Calibration Check Log
System ID: flA"^ \ / Q ~'2-\ Calibration Date: fr//H / *3 Due Date: ^/iH j \ Lj
Scaler S/N: 5~IS^^- High Voltage: } DZ^ Window: 4.42 Thrshld: 2.20
Detector S/N Source ID/SN: 9-4?:2*/&S -O^Source Activity: S°I3 6
to 'S"V 3c = to HI Blank Canister Bkgd. Range,cpm: 2o =
Gross Source Range, cpm: to (0&~7 f
Technician:
All counts tirqes are one minute.
Date By Background Counts (1 min. each)
#1 #2 Avg-#1
Source Counts (1 min. each)
#2 #3 Average
ok?
Y/N
IS lovers-
JJEL
L2~X~
13 lQ2dLZ IQQZL \Q-2JP
157'"3 H2 J31 12
Y/N: Y = average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: VJt\\^ M. £bG\ VK\\\ } B 1 AV\ ^ ^ ) L( T
CLIENT: ElyX*/^ y Put U ^ ^C^vA^^S
Calibration Check Los
Sy^m ID: M ' ° 2-/ ~D Calibration Date: k//^ ^ R Due Date: (*/)4 / /
Scaler S/N: S"l S k>3 High Voltage: 1C? 2-S* Window: 4.42 Thrshld: 2.20
_ Source ID/SN: ^K^^^/^S ~0%awx Vctivity: • :3 h^ii
7B t0 15"! 3a= &o
Detector S/N: / S "3^_
Blank Canister Bkgd. Range, cpm: 2 a =
2a- <^H59 to / OS^l 3q= 98*7
) no
Gross Source Range, cpm: to
Technician:
All counts times are one minute.
Pre
pr*
Date By Background Counts (1 min. each)
#1 #2 #3
Source Counts (1 min. each)
#1 #2 #3 Average
ok?
Y/N
113 X
IS LgJLg i Q2-3c?
1^3 1 Q-2L\
Y/N: Y • average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: W W\ \\ } % )^vAcj C /l^ UCI
CLIENT: £-iAe*"gy Fu^^ R g$t?vJl<rc^S
Calibration Check Log
: (W-DX/P-ZO Calibration Date: t*/\H/\3 Due Date: fr/t 4 /l <f
StSTC?3 High Voltage: I O ~2-S Window: 4.42 Thrshld: 2.20
Detector S/N: 0H*lG"3'X Source 1D/SN: ^A^/Lr$~OS" Source Activity: "5^/3 K pG
System ID
Scaler S/N
Blank Canister Bkgd. Range, cpm: 2 cr = "7 6 to 1ST | 30 = 0 ° to no
Gross Source Range, cpm:
Technician: ^fft^/v ^
All counts times are one minute.
Date By Background Counts (1 min. each)
#1 #2 #3 Avg-#1
Source Counts (1 min. each)
#2 #3 Average
ok?
Y/N
113 ITS [Ot* ill 2 i2± to 33^
i3d \%3 in TTL7
Y/N: Y = average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
Thc acceptable ranges were determined from prior background and source check data.
Balance Model:
BALANCE OPERATION DAILY CHECK
O WOi VL5 pc?/"f -& -<\vnpi\^\
Standard Weight (g): "3- 00» 0
Date
0/iii '3
o/fSV/3
Pre-check (g) Post-check (g) O.K. ± 0.1 % ? By
t
X •5
Appendix B
Recount Data Analyses
B
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.00
PILE: 3 BATCH: D SURFACE: TAILINGS
AREA: BEACH DEPLOYED: 6 10 13 RETRIEVED: 6
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
AIR TEMP MIN: 54eF
11 13 CHARCOAL BKG:
DATA ENTRY BY: DLC
WEATHER: NO RAIN
156 cpm WLOut: 180.0
TARE WEIGHT: 29.2
SAMPLE RBTRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON ± LLD PRECISION
I.D. HR MIN HR MIN MO DA YR HR MIN {MIN) COUNTS WT IN pCi/mJ3 pCi/m3 s pCi/m's % RPD
DIO
RECOUNT
D20
RECOUNT
D3Q
RECOUNT
D40
RECOUNT
D50
RECOUNT
D60
RECOUNT
D70
RECOUNT
D80
RECOUNT
D90
RECOUNT
D100
RECOUNT
DIO
DID
D20
D20
D30
D30
D40
D40
D50
D50
D60
D60
D70
D70
D80
D80
D90
D90
D100
D100
10
10
22
22
34
34
46
46
57
57
10
10
23
23
35
35
45
45
55
55
21
21
25
25
34
34
38
38
42
42
19
19
24
24
32
32
37
37
41
41
14 13 15
15 13 8
14 13 15
15 13 8
14 13
15 13
14 13
15 13
14 13
15 13
14 13
15 13
14 13
15 13
15
16
8
16
8
16
16
14 13 16
15 13 8
14 13 16
15 13 8
14
15
13
13
16
8
36
28
43
28
51
30
1
30
8
31
15
31
22
33
30
33
39
34
52
34
36731
33347
15886
14446
3185
2952
23613
21195
14425
12790
1409
1184
28518
25785
9755
8590
10456
9620
46892
41638
214.6
214.6
214 .9
214.9
229.5
229.5
215.9
215.9
214.
214.
217.
217,
217
217
218.4
218 .4
217.0
217.0
215.8
215.8
93.6
96.4
40.5
41.7
7.8
8.2
60.8
61.8
37.2
37.2
3.2
3.0
73.4
75.0
24. 9
24.7
25.8
27.8
122.3
122.2
9.4
9.6
4.0
4.2
0.8
0.8
6.1
6.2
3.7
3.7
0.3
0.3
7.3
7.5
2.5
2.5
2.7
2.8
12.2
12.2
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
Q. 05
3.0%
3.1%
4.6%
1.6%
0.2%
7.5%
2.1%
0.8%
3.6%
0.1%
AVERAGE PERCENT PRECISION FOR THE CELL 3 BEACH REGION: 2.6%
Page l of 1
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.00
PILE: 3 BATCH: F SURFACE: SOIL AIR TEMP MIN: 58°F WEATHER: NO RAIN
AREA: COVER DEPLOYED: 6 11 13 RETRIEVED: 6 12 13 CHARCOAL BKG: 154 cpm WLOut 180.0 g.
FIELD TECHNICIANS: MC.CS.TE.DLC COUNTED BY: DLC DATA ENTRY BY: DLC TARE WEIGHT: 29.2 g.
COUNTING SYSTEM LD.: M01/D21, M02/D20 CAL. DUE: 6/14/14
GRID SAMPLE RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON ± LLD PRECISION
LOCATION I. D. HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WTINpCi/m s pCi/nrs pCi/m2B % RPD
F10 FIO 10 6 10 11 6 14 13 17 6 1 2337 217.2 4.7 0.5 0.04
RECOUNT FIO 10 6 10 11 6 15 13 7 50 1 2124 217.2 4.7 0.5 0.04 0.9%
F20 F20 10 23 10 22 6 14 13 17 16 3 1210 220.0 0.5 0.1 0.04
RECOUNT F20 10 23 10 22 6 15 13 7 52 3 1109 220.0 0.5 0.1 0.04 3.5%
F30 F30 10 40 10 34 6 14 13 17 30 1 8610 218.3 18.2 1.8 0.04
RECOUNT F30 10 40 10 34 6 15 13 7 54 1 8003 218.3 18.8 1.9 0.04 3.4%
F40 F40 11 1 10 45 6 14 13 17 41 1 26602 218.4 57.3 5.7 0.04
RECOUNT F40 11 1 10 45 6 15 13 7 54 1 24191 218.4 58.0 5.8 0.04 1.2%
F50 F50 9 54 10 4 6 14 13 17 49 1 82859 213.7 177.3 17.7 0.04
RECOUNT F50 9 54 10 4 6 15 13 7 55 1 76319 213.7 181.6 18.2 0.04 2.4%
F60 F60 10 12 10 17 6 14 13 17 58 1 5234 214.5 10.9 1.1 0.04
RECOUNT F60 10 12 10 17 6 15 13 7 55 1 4593 214.5 10.6 1.1 0.04 2.9%
F70 F70 10 32 10 30 6 14 13 18 5 1 4906 210.9 10.2 1.0 0.04
RECOUNT F70 10 32 10 30 6 15 13 7 57 1 4688 210.9 10.9 1.1 0.04 5.8%
F80 F80 10 52 10 43 6 14 13 18 15 1 2309 212.7 4.7 0.5 0.04
RECOUNT F80 10 52 10 43 6 15 13 7 57 1 2113 212.7 4.7 0.5 0.04 0.8%
F90 F90 10 59 10 56 6 14 13 18 25 1 15344 210.6 32.8 3.3 0.04
RECOUNT F90 10 59 10 56 6 15 13 7 58 1 14358 210.6 33.9 3.4 0.04 3.5%
F100 F100 10 40 10 51 6 14 13 18 34 2 1364 214.3 1.1 O.l 0.04
RECOUNT F100 10 40 10 51 6 15 13 7 59 2 1270 214.3 1.1 0.1 0.04 0.8%
AVERAGE PERCENT PRECISION FOR THB CELL 3 COVER REGION: 2.5%
Page 1 of 1
Appendix C
Radon Flux Sample Laboratory Data (including Blanks)
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.00
PILE: 3 BATCH: D SURFACE: TAILINGS AIR TEMP MIN: 54°F
AREA: BEACH DEPLOYED: 6 10 13 RETRIEVED: 6 11 13 CHARCOAL BKG:
FIELD TECHNICIANS: MC.CSJE.DLC COUNTED BY: DLC DATA ENTRY BY: DLC
COUNTING SYSTEM LD.: M01/D21, M02/D20 CAL DUE: 6/14/14
WEATHER: NO RAIN
156 cpm WLOut 180.0 g.
TARE WEIGHT: 29.2 g.
GRID
LOCATION
DOl
D02
D03
D04
D05
D06
D07
D08
D09
DIO
Dil
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31
D32
D33
D34
D35
D36
D37
SAMPLE DEPLOY RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON ± LLD
I. D. HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m-S pCi/mJB pCi/m-a COMMENTS:
DOl
D02
DO 3
D04
DOS
DOS
D07
DOS
D09
DIO
Dll
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D30
D31
D32
D33
D34
D35
D36
D37
0
1
2
3
4
5
6
8
9
10
11
12
13
15
16
17
18
19
20
22
23
24
26
27
28
23
30
32
33
34
35
36
37
39
40
41
42
18
18
19
19
19
20
20
21
21
21
22
22
23
23
23
24
24
25
25
25
26
26
27
27
27
33
33
33
34
34
35
35
35
36
36
37
37
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
13 15
30
30
31
31
33
33
34
34
36
36
37
37
39
39
40
40
42
42
43
43
45
45
47
47
48
48
50
50
51
51
54
54
56
56
57
57
59
25666
17048
15001
21067
19830
15664
27469
29917
30797
36731
44260
38931
24099
24057
27440
28177
40206
11191
20341
15886
19281
45745
44487
35694
27180
34287
16258
15341
8295
3185
1488
1819
3621
9812
6877
30886
29551
214.5
219.4
215.3
213.7
219.1
210.0
222 .5
215.0
216.1
214.
214
215
214
216,
215,
218
213
210
213
214,
213.8
213.0
216.7
213.5
202.6
219.2
215.9
216.
220
229
237
221,
219.3
215.8
216.6
217 .1
218.5
65.
43
37
53
50.
39.
69.9
76.0
78,
93
113
99
61,
61,
70,
71
103
28
51,
40.
49
117
114.4
91.6
69.8
87.7
41.5
39.1
21.0
7.
1.
1
9
24,
17.4
79.4
76.2
6.
4.
3
5,
5 ,
4,
7,
7,
7.
9,
11.
9,
6.
6,
7.
7.
10.
2.8
5.2
4.0
4.9
11.7
11.4
9.2
7.0
8.8
4.1
3.9
2.1
0.8
0.2
0.2
0.9
2.5
1.7
7.9
7.6
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
0.05
05
05
05
05
05
05
05
05
05
05
05
0.05
0.05
Page 1 of 3
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.00
PILE: 3 BATCH: D SURFACE: TAILINGS AIR TEMP MIN: 54"F
AREA: BEACH DEPLOYED: 6 10 13 RETRIEVED: 6 11 13 CHARCOAL BKG:
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC DATA ENTRY BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL DUE: 6/14/14
WEATHER: NO RAIN
156 cpm WLOut: 180.0 g,
TARE WEIGHT: 29.2 g.
DEPLOY RETRIV ANALYSIS
HR MIN HR MIN MO DA YR
MID-TIME CNT GROSS
HR MIN (MIN) COUNTS
RADON ± LLD
pCi/ra3s pCi/m2s pCi/m-'a COMMENTS:
D38
D39
D40
D41
D42
D43
D44
D45
D46
D47
D48
D49
D50
D51
D52
D53
D54
D55
D56
D57
D58
D59
D60
D61
D62
D63
D64
D65
D66
D67
D68
D69
D70
D71
D72
D73
D74
D38
D39
D40
D41
D42
D43
D44
D45
D46
D47
D48
D49
D50
D5L
D52
D53
D54
D55
D56
DS7
D58
D59
D60
D61
D62
D63
DS4
DS5
D66
D67
D68
DS9
D70
D71
D72
D73
D74
43
44
46
47
48
49
50
51
53
54
55
56
57
0
1
2
3
4
5
6
7
9
10
11
12
14
15
17
IB
19
20
22
23
24
25
26
28
37
38
38
39
39
39
40
40
41
41
41
42
42
16
16
16
17
17
18
18
19
19
19
20
20
21
21
22
22
22
23
23
24
24
25
25
25
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
13 15
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
13 16
59
1
1
2
2
4
4
5
5
6
6
8
8
9
9
11
11
12
12
14
14
15
15
17
17
18
18
20
20
21
21
22
22
24
24
25
25
25972
34906
23613
20948
55702
61488
36252
10080
44216
33799
31944
11929
14425
21918
11143
112937
11280
14006
26934
23101
14279
17652
1409
2579
16460
15796
15549
30898
5479
18143
24530
31227
28518
16019
21860
2147
16838
216.0
216.4
215.9
215.2
219.3
216.4
219.1
221.9
216.8
221.1
221.7
216.8
214.5
217.9
222.3
221.5
207.4
227.9
220.4
223.2
229.7
220.9
217.6
222.6
215.5
213.1
214 .1
216.3
209.3
212.4
216.8
215.4
217
214
217
218
211
66.8
90.1
60.8
54.0
144
159
93
25
114
87
82
30
37
55
28
289
28
35
68
59
36
45
3
6.3
42.0
40.4
39.7
79.5
13.8
46.6
63
80
73
41
56
5
6.7
9.0
6.1
5.4
14.4
15.9
9.4
2.6
11.4
3.1
3.7
5.6
2.8
29.0
43.3
0 .05
0.05
0.05
0.05
05
05
05
05
C5
0.05
0.05
0.05
0.05
05
05
0.05
0.05
0.05
0.05
,05
,05
,05
,05
,05
0.05
0.05
0.05
0.05
0.05
0.05
Page 2 of 3
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.00
PILE: 3 BATCH: D SURFACE: TAILINGS
AREA: BEACH DEPLOYED: 6 10 13 RETRIEVED: 6
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
AIR TEMP MIN: 54°F
11 13 CHARCOAL BKG:
DATA ENTRY BY: DLC
WEATHER: NO RAIN
156 cpm WLOut 180.0
TARE WEIGHT: 29.2
SAMPLE DEPLOY RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON + LLD
I.D. HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m's pCi/m;s pCi/m5 S COMMENTS:
D75
D76
D77
D78
D79
D80
D81
D82
D83
D84
D85
D86
D87
D88
D89
D90
D91
D92
D93
D94
D95
D96
D97
D98
D99
D100
D75
D76
D77
D78
D79
D80
D81
D82
D83
D84
D85
D86
D87
DB8
D89
D90
D91
D92
D93
D94
D95
D96
D97
D98
D99
D10O
29
30
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
26
31
31
32
32
32
33
33
34
34
35
35
35
36
36
37
37
38
38
38
39
39
40
40
41
41
14 13
14 13
16
16
16
16
14 13 16
14 13
14 13
14 13 16
14 13 16
14 13 16
14 13 16
14 13 16
16 14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13 16
14 13 16
14 13 16
14 13 16
14 13 16
14 13 16
14 13 16
14 13 16
26
26
28
28
30
30
31
31
33
36
36
37
37
39
39
40
40
42
45
48
49
51
51
52
52
6625
5583
25832
42826
18663
9755
27284
26309
35425
19980
29543
22563
23463
31247
10456
9458
1792
1051
1454
1255
1050
3385
11950
21673
46892
215
217.
214
216.
214.
218,
210,
216.
213.
16.8
14.0
66
110
48
24
70
67.9
91.7
1.7
1.4
6.7
11.1
4.8
2.5
7.1
6.8
9.2
0.05
0.05
0.05
0. 05
0.05
0.05
0. 05
05
05
220.0
214.7
215.4
217.2
215.
217,
222.
218 ,
215.
216,
216,
221.
220.2
214.5
216.0
215.8
51
'7 5
5 2
6 0
81
26.8
24.3
4
2
0
2
1
30,
56
122
5,
7.
5.
6.
8.
2.
2.
0,
0.2
0.1
0.3
0.1
0.8
3.1
5.6
12.2
0. 05
0.05
CE
05
05
05
0 5
05
05
0.05
0.05
05
05
0.05
0.05
0.05
NOT SEALED
AVERAGE RADON FLUX RATE FOR THE CELL 3 BEACH REGION: 56.6 pCi/mJs
BLANK CANISTER ANALYSIS:
0.9 MIN
289.9 MAX
LOCATION
SAMPLE RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON ± LLD
I.D. HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m^B pCi/ir^s pCi/m-'s COMMENT
D BLANK 1 D BLANK 1 7 45 8 10 6 14 13 12 46 10
D BLANK 2 D BLANK 2 7 45 8 10 6 14 13 12 46 10
D BLANK 3 D BLANK 3 7 45 8 10 6 14 13 12 57 10
D BLANK 4 D BLANK 4 7 45 8 10 6 14 13 12 57 10
D BLANK 5 D BLANK 5 7 45 8 10 6 14 13 13 7 10
1642 206.3
1521 206.2
1605 209.9
1641 207.0
1586 207.7
0.02
-0.01
0. 01
0.02
0.01
0.03
0.03
0.03
0.03
0.03
0.05 CONTROL
0.05 CONTROL
0.05 CONTROL
0.05 CONTROL
0.05 CONTROL
AVERAGE BLANK CANISTER ANALYSIS FOR THE CELL 3 BEACH REGION: 0.01
Page 3 of 3
pCi/mJs
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.00
PILE: 3 BATCH: F SURFACE: SOIL AIR TEMP MIN: 58°F
AREA: COVER DEPLOYED: 6 11 13 RETRIEVED: 6 12 13 CHARCOAL BKG:
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC DATA ENTRY BY: DLC
COUNTING SYSTEM ID.: M01/D21, M02/D20 CAL. DUE: 6/14/14
WEATHER NO RAIN
154 cpm WLOut 180.0
TARE WEIGHT: 29.2
GRID
LOCATION
FOI
F02
F03
F04
F05
F06
F07
F08
F09
FIO
Fll
F12
F13
F14
F15
F16
F17
F18
F19
F20
F21
F22
F23
F24
F25
F26
F27
F28
F29
F30
F31
F32
F33
F34
F35
F36
F37
SAMPLE DEPLOY RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON ± LLD
I. D. HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/mJ 3 pCi/m;3 pCi/m2s COMMENTS;
FOI
F02
F03
F04
F05
F06
F07
F08
F09
FIO
Fll
F12
F13
F14
F15
F16
F17
F18
F19
F20
F21
F22
F23
F24
F25
F26
F27
F28
F29
F30
F31
F32
F33
F34
F35
F36
F37
9
9
9
9
9
9
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
46
48
50
52
54
56
0
2
4
6
8
10 10
10 12
10 13
10 15
16
18
10 20
10 21
23
25
27
29
10 30
10 32
34
35
37
10 38
10 40
10 42
10 44
46
49
52
54
56
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
1
2
3
4
5
6
8
9
10
11
12
13
14
16
17
18
19
20
21
22
24
25
26
27
28
29
30
32
33
34
35
36
37
38
40
41
42
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
6 14
6 14
14
14
14
14
14
14
14
14
14
14
14
13 16
13 16
13 16
13 16
13 16
13 16
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
13 17
54
54
55
55
57
58
2
1
6
6
8
9
11
11
12
12
14
14
15
16
18
20
23
23
25
26
29
29
30
30
31
31
33
34
36
36
39
2060
4971
3352
5973
1043
1461
1179
1257
1056
2337
3706
1247
2065
5606
1462
1917
4725
12365
1310
1210
3744
1241
1719
1065
1116
1405
2938
1547
10317
8610
22918
18079
54074
1516
1499
1285
1717
212.
211.
214
212,
210
211,
210.2
211.9
220.7
217.2
209.8
213
213
210,
216
211,
220,
210,
216.4
220.0
212
214
215
221.
222
215,
213 .2
213.3
215.2
218.3
213.5
216.0
217.2
222.7
213.2
213 .5
219.0
4.
10.
6,
12.
0.
0,
0,
1.
0.
4,
7.
1.
4 .
11.7
2.8
3.8
9.8
26.2
2.5
0,
7.
0.
3 .
2.
0.
0.
6.
3.
21,
18.
49,
38,
116.
0.4
1.0
0.8
2.2
l.B
1.3
1.3
1.1
1.5
4.
3 .
11,
0,
0,
0,
0,
0.04
0.04
04
04
04
,04
04
04
04
04
04
04
0.04
0. 04
0.04
0.04
04
04
04
04
0.04
0.04
0.04
0.04
04
04
04
04
04
04
04
04
Page 1 of 3
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.00
PILE: 3 BATCH: F SURFACE: SOIL AIR TEMP MIN: 58"F
AREA: COVER DEPLOYED: 6 11 13 RETRIEVED: 6 12 13 CHARCOAL BKG:
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC DATA ENTRY BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
WEATHER: NO RAIN
154 cpm WLOut 180.0
TARE WEIGHT: 29.2
GRID
LOCATION
F3 8
F39
F40
F41
F42
F43
F44
F45
F4S
F47
F4 8
F49
F50
F51
F52
F53
F54
F55
F56
F57
F58
F59
F60
F61
F62
FS3
F64
F65
F66
F67
F68
F69
F7Q
F71
F72
F73
F74
DEPLOY RETRIV ANALYSIS MID-TIME CNT GROSS
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS pCi/m5a pCi/m's
F38
F39
F40
F41
F42
F43
F44
F45
F46
F47
F48
F49
F50
F51
F52
F53
F54
F55
F56
F57
F58
FS9
F60
F61
F62
F63
F64
F65
FS6
F67
F68
F69
F70
F71
F72
F73
F74
10 58
59
1
2
3
40
4 2
44
46
46
50
52
54
5 6
5 3
0
1
3
4
S
10
11
11
11
9
9
9
9
9
9
9
9
9
9
10
10
10
10
10
10 8
10 10
10
10
12
14
10 16
10 18
10 20
10 22
10 24
10 26
10 28
10 30
10 32
10 34
10 36
10 38
10 40
10
10
10
9
9
9
9
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
43
44
45
10 46
10 4S
55
56
57
59
0
1
3
4
5
7
8
9
10
12
13
14
16
17
18
20
21
22
10 24
10 25
26
27
29
30
31
33
34
35
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
17
18
18
18
18
18
18
18
18
18
18
18
18
39
41
41
43
43
44
44
46
46
47
47
49
49
50
51
53
53
55
55
56
56
58
58
59
59
1
1
2
2
4
4
5
5
7
7
8
9
29637
62928
26602
3429
43407
1226
2793
4684
5954
15403
1045
4033
82859
24720
1021
1020
24153
12951
1291
11136
2081
42046
5234
3243
36549
26788
2435
3214
8770
6996
6485
95450
4906
2293
6054
35778
1112
218.6
221.5
218.4
220.8
216.8
212,
215
213
214,
212,
207,
216
213 ,
215,
222.4
221.1
219.5
211. 9
206.1
209.2
217.0
210.7
214.5
215.7
211.8
210.1
206 .5
206
205
213
212
213
210
212.4
218.3
218.1
213.0
63.8
136.1
57.3
7,
93,
2,
5.
9.
12.
32,
1.
177
52 . 8
0.8
1.9
51.5
27.5
2.4
23.6
4,
90.
10.
6.
78.
57.4
4.9
6.6
18.6
14.8
13 .7
205.8
10.2
4.6
12.7
77.1
0.5
6.4
13.6
5,
0.
9.
0.
0.
1.0
1.2
3.3
0.2
0.8
17.7
5.3
0.1
0.2
5.1
2.8
0.
2,
0.
9.
1.
0.7
7.8
5.
0.
0.
1.
1,
1.4
20.6
1.
0.
0.04
0. 04
0.04
0.04
0.04
0.04
0.04
0. 04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0.04
0. 04
0.04
, 04
.04
0.04
0.04
0.04
0.04
Page 2 of 3
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.00
PILE: 3 BATCH: F SURFACE: SOIL
AREA: COVER DEPLOYED: 6 11 13 RETRIEVED: 6
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
AIR TEMP MIN:58*F
12 13 CHARCOAL BKG:
DATA ENTRY BY: DLC
WEATHER: NO RAIN
154 cpm WLOut 180.0
TARE WEIGHT: 29.2
GRID
LOCATION
F75
F76
F77
F78
F79
F80
F81
F82
F83
F84
F85
F86
F87
F88
F89
F90
F91
F92
F93
F94
F95
F96
F97
F98
F99
F100
DEPLOY RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON ± LLD
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m-s pCi/m-'s pCi/m5 S COMMENTS:
F75
F76
F77
F78
F79
F80
F81
F82
F83
F84
F85
F86
F87
F88
F89
F90
F91
F92
F93
F94
F95
F96
F97
F9B
F99
F100
10
10
42
44
10 46
10 48
10 50
10 52
10
10
54
56
10 58
11 0
11
11
11
11
11
10 59
10 58
10 56
10 54
10 52
10 50
10 48
10 46
10
10
44
42
10 40
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
37
38
39
41
42
43
44
46
47
48
50
51
52
53
55
56
57
58
59
58
56
55
54
53
52
51
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13 18
18
18
14 13 18
14 13 18
14 13 18
14 13 18
14 13 18
18
14 13
14 13
14 13
14 13
14 13 18
14 13 18
14 13 18
14 13 18
14 13 18
14 13 18
14 13 18
12 1
12 1
13 1
13 1
15 2
15 1
17 1
18 2
20 1
20 1
22 3
22 1
24 1
24 1
25 1
25 1
27 1
27 1
28 1
28 1
30 1
30 1
31 1
31 1
33 1
34 2
1283
5599
19904
2049
1524
2309
1346
1259
10259
1252
1438
8842
3736
48796
3692
15344
29374
3282
41047
36874
20682
21122
15017
3571
1932
1364
225.7
211.4
220.0
204.9
215.8
212.7
210.8
219.1
211.8
215,
211,
209,
211.
212.
211.
210.
222.
217.
215.2
213 .1
213,
212.
212.
217.
212.
214.
2.4
ii.a
42.8
4
1
4
2
1
22
2.4
0.7
18 .8
7.8
105.4
7.7
32.8
63
6
87
78,
44
45,
31,
7,
3,
1.
0
1
4
0
0
0
0
0
2
0
0
1
0.8
10.5
0.8
3.3
6.3
0.7
8.8
.9
,4
.5
.2
. 7
04
04
04
04
0 4
04
0 4
04
04
0. 04
0.04
04
04
0 4
0.04
0.04
7
4
4
3
0
0.4
0.1
04
04
0 4
04
04
04
04
04
04
04
AVERAGE RADON FLUX RATE FOR THE CELL 3 COVER REGION:
BLANK CANISTER ANALYSIS:
LOCATION
SAMPLE
I. D.
24.1 pCi/m'S
0.3 V!N
205.8 MAX
RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON + LLD
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m;s pCi/mJs pCi/m^s COMMENTS:
F BLANK 1 F BLANK 1
F BLANK 2 F BLANK 2
F BLANK 3 F BLANK 3
F BLANK 4 F BLANK 4
F BLANK 5 F BLANK 5
30
30
30
30
50
50
50
14
14
14
13
13
13
13
13
13
27
27
38
50 6 14 13 13 49
10
10
10
10
1753 205.8
1580 211.9
1670 208.4
1688 210.6
0.04
0.01
0.03
0.03
0.03
0.03
0.03
0.03
0.04
0.04
0.04
0.04
CONTROL
CONTROL
CONTROL
VOID
CONTROL
AVERAGE BLANK CANISTER ANALYSIS FOR THE CELL 3 COVER REGION: 0.03 pCi/m2S
Page 3 of 3
Appendix D
Sample Locations Map (Figure 2)
C9
-CELL 1
5 WHITE MESA MILL
BLANDING UTAH
NESHAPS 2013
JUNE 2013 SAMPLING
3
PREPARED FOR
ENERGY FUELS RESOURCES *Oow
'r?vr
5* LEGEND
/
FO! O MWU LOCATION ON CU.I
FJfiUBE.2
-CELL 48-
El !
200 100 a 200 400
TSLIGO
ENVIRONMENTAL LLC
THB DRAWING BM PDOFfOTY Of TtUCO CNWdONMfNTAL, UC AND IS NOT TO M REPRODUCED. UOOtf IED OR USf D KW AMY 0TW* PROJECT OR ETOBtON OF THB PBOJECT
item sv AGWEMtNTwrrH rajxa
ATTACHMENT 2
Tellco Report on Annual Radon Flux Monitoring
September 2013
National Emission Standards for Hazardous Air Pollutants
2013 Radon Flux Measurement Program
White Mesa Mill
6425 South Highway 191
Blanding, Utah 84511
3rd Quarter 2013 Sampling Results
Cell 3
Prepared for: Energy Fuels Resources (USA) Inc.
6425 S. Highway 191
P.O. Box 809
Blanding, Utah 84511
Prepared by: Tellco Environmental
P.O. Box 3987
Grand Junction, Colorado 81502
TABLE OF CONTENTS
Page
1. INTRODUCTION 1
2. SITE HISTORY AND DESCRIPTION 1
3. REGULATORY REQUIREMENTS FOR THE SITE 2
4. SAMPLING METHODOLOGY 2
5. FIELD OPERATIONS 3
5.1 Equipment Preparation 3
5.2 Sample Locations, Identification, and Placement 3
5.3 Sample Retrieval 3
5.4 Environmental Conditions 4
6. SAMPLE ANALYSIS 4
6.1 Apparatus 4
6.2 Sample Inspection and Documentation 4
6.3 Background and Sample Counting 5
7. QUALITY CONTROL (QC) AND DATA VALIDATION 5
7.1 Sensitivity 5
7.2 Precision 5
7.3 Accuracy 6
7.4 Completeness 6
8. CALCULATIONS 6
9. RESULTS 7
9.1 Mean Radon Flux 7
9.2 Site Results 8
References 9
Figure 1 10
Appendix A. Charcoal Canister Analyses Support Documents
Appendix B. Recount Data Analyses
Appendix C. Radon Flux Sample Laboratory Data, Including Blanks
Appendix D. Sample Locations Map (Figure 2)
1. INTRODUCTION
During June 10-11, 2013 and September 22-23, 2013 Tellco Environmental, LLC (Tellco) of Grand
Junction, Colorado, provided support to Energy Fuels Resources (USA) Inc. (Energy Fuels) to
conduct radon flux measurements regarding the required National Emission Standards for Hazardous
Air Pollutants (NESHAPs) Radon Flux Measurements. These measurements are required of Energy
Fuels to show compliance with Federal Regulations (further discussed in Section 3 below). The
standard is not an average per facility, but is an average per radon source. The standard allows mill
owners or operators the option of either making a single set of measurements or making
measurements over a one year period (e.g., weekly, monthly, or quarterly intervals).
Previously during June 2013, Energy Fuels with support from Tellco conducted radon flux
measurements on Cell 3 with the intention of performing a single set of measurements to represent
Cell 3 for the year 2013. However, the arithmetic average radon flux rate of the June 2013 sampling
for Cell 3 was above the regulatory standard of 20 picoCuries per square meter per second (pCi/m2-s);
and in response, Energy Fuels has begun conducting radon flux measurements for Cell 3 covered
region on a quarterly basis, while opting to use the results from the June 2013 sampling of the Cell 3
exposed tailings region for the calculations of the weighted averages for Cell 3.
This report presents the mean radon flux for Cell 3 using the measurement results of the June 2013
sampling of the Cell 3 exposed tailings region and the results of the September sampling of the Cell 3
covered region. Tellco was contracted to provide radon canisters, equipment, and canister placement
personnel as well as lab analysis of samples. Energy Fuels personnel provided support for loading and
unloading charcoal from the canisters. This report details the procedures employed by Energy Fuels
and Tellco to obtain the results presented in Section 9.0 of this report.
2. SITE DESCRIPTION
The White Mesa Mill facility is located in San Juan County in southeastern Utah, six miles south of
Blanding, Utah. The mill began operations in 1980 for the purpose of extracting uranium and
vanadium from feed stocks. Processing effluents from the operation are deposited in four lined cells,
which vary in depth. Cell 1, Cell 4A, and Cell 4B did not require radon flux sampling, as explained in
Section 3 below. Cell 2 sampling results are presented in separate reports.
Cell 2 has a total area of approximately 270,624 square meters (m2) and is comprised of one region
which requires NESHAPs radon flux monitoring. This cell has been filled and covered with interim
soil cover of varying thickness; there are no exposed tailings or standing liquid within Cell 2.
Cell 3 is nearly filled with tailings sand and is undergoing pre-closure activities. This cell, which has
a total area of 288,858 m2, is comprised of two source regions that require NESHAPs radon
monitoring: approximately 231,175 m of soil cover of varying thickness and approximately 17,558
m2 of exposed tailings "beaches". The remaining approximately 40,125 m2 was covered by standing
liquid in lower elevation areas. The size of the beaches region during June 2013 is smaller than it was
in 2012, while size of the covered region is larger than in 2012.
1
3. REGULATORY REQUIREMENTS FOR THE SITE
Radon emissions from the uranium mill tailings at this site are regulated by the State of Utah's
Division of Radiation Control and administered by the Utah Division of Air Quality under generally
applicable standards set by the Environmental Protection Agency (EPA) for Operating Mills.
Applicable regulations are specified in 40 CFR Part 61, Subpart W, National Emission Standards for
Radon Emissions from Operating Mill Tailings, with technical procedures in Appendix B. At present,
there are no Subpart T uranium mill tailings at this site. These regulations are a subset of the
NESHAPs. According to subsection 61.252 Standard, (a) radon-222 emissions to ambient air from an
existing uranium mill tailings pile shall not exceed an average of 20 pCi/m2-s for each pile or region.
Subsection 61.253, Determining Compliance, states that: "Compliance with the emission standard in
this subpart shall be determined annually through the use of Method 115 of Appendix B." The
repaired Cell 4A, and newly constructed Cell 4B, were both constructed after December 15, 1989
and each was constructed with less than 40 acres surface area. Cell 4A and 4B comply with the
requirements of 40 CFR 61.252(b), therefore no radon flux measurements are required on either
Cell 4A or 4B.
4. SAMPLING METHODOLOGY
Radon emissions were measured using Large Area Activated Charcoal Canisters (canisters) in
conformance with 40 CFR, Part 61, Appendix B, Method 115, Restrictions to Radon Flux
Measurements, (EPA, 2012). These are passive gas adsorption sampling devices used to determine
the flux rate of radon-222 gas from a surface. The canisters were constructed using a 10-inch
diameter PVC end cap containing a bed of 180 grams of activated, granular charcoal. The prepared
charcoal was placed in the canisters on a support grid on top of a Vi inch thick layer of foam and
secured with a retaining ring under 1 lA inches of foam (see Figure 1, page 11).
Two hundred sampling locations were distributed throughout Cell 3 (comprised of two source regions
requiring monitoring) as depicted on the Sample Locations Map (see Figure 2, Appendix D). Each
charged canister was placed directly onto the surface (open face down) and exposed to the surface for
24 hours. Radon gas adsorbed onto the charcoal and the subsequent radioactive decay of the
entrained radon resulted in radioactive lead-214 and bismuth-214. These radon progeny isotopes emit
characteristic gamma photons that can be detected through gamma spectroscopy. The original total
activity of the adsorbed radon was calculated from these gamma ray measurements using calibration
factors derived from cross-calibration of standard sources containing known total activities of
radium-226 with geometry identical to the counted samples and from the principles of radioactive
decay.
After approximately 24 hours, the exposed charcoal was transferred to a sealed plastic sample
container (to prevent radon loss and/or further exposure during transport), identified and labeled, and
transported to the Tellco laboratory in Grand Junction, Colorado for analysis. Upon completion of on-
site activities, the field equipment was alpha and beta-gamma scanned for possible contamination
resulting from fieldwork activities. All field equipment was surveyed by Energy Fuels Radiation
Safety personnel and released for unrestricted use. Tellco personnel maintained custody of the
samples from collection through analysis.
2
5. FIELD OPERATIONS
5.1 Equipment Preparation
All charcoal was dried at 110°C before use in the field. Unused charcoal and recycled charcoal were
treated the same. 180-gram aliquots of dried charcoal were weighed and placed in sample containers.
Proper balance operation was verified daily by checking a standard weight. The balance readout
agreed with the known standard weight to within ±0.1 percent.
After acceptable balance check, empty containers were individually placed on the balance and the
scale was re-zeroed with the container on the balance. Unexposed and dried charcoal was carefully
added to the container until the readout registered 180 grams. The lid was immediately placed on the
container and sealed with plastic tape. The balance was checked for readout drift between readings.
Sealed containers with unexposed charcoal were placed individually in the shielded counting well,
with the bottom of the container centered over the detector, and the background count rate was
documented. Three five-minute background counts were conducted on ten percent of the containers,
selected at random to represent the "batch". If the background counts were too high to achieve an
acceptable lower limit of detection (LLD), the entire charcoal batch was labeled non-conforming and
recycled through the heating/drying process.
5.2 Sample Locations, Identification, and Placement
On June 10, 2013, one hundred sampling locations were spread out throughout the Cell 3 beaches
region; and on September 22, 2013, one hundred sampling locations were spread out throughout the
Cell 3 covered region. A sample identification number (ID) was assigned to every sample point, using
a sequential alphanumeric system indicating the charcoal batch and physical location within the
region (e.g., D01...J100). This ID was written on an adhesive label and affixed to the top of the
canister. The sample ID, date, and time of placement were recorded on the radon flux measurements
data sheets for the set of one hundred measurements.
Prior to placing a canister at each sample location, the retaining ring, screen, and foam pad of each
canister were removed to expose the charcoal support grid. A pre-measured charcoal charge was
selected from a batch, opened and distributed evenly across the support grid. The canister was then
reassembled and placed face down on the surface at each sampling location. Care was exercised not
to push the device into the soil surface. The canister rim was "sealed" to the surface using a berm of
local borrow material.
Ten canisters (blanks) were similarly processed and the canisters were kept inside an airtight plastic
bag during the 24-hour testing period.
5.3 Sample Retrieval
At the end of each of the 24-hour testing periods, the canisters were retrieved, disassembled and each
charcoal sample was individually poured through a funnel into a container. Identification numbers
were transferred to the appropriate container, which was sealed and placed in a box for transport.
Retrieval date and time were recorded on the same data sheets as the sample placement information.
The blank samples were similarly processed. During retrieval of the canisters from the Cell 3 beaches
region on June 11, 2013, one canister (D84) was found to have not been properly sealed during
placement; the charcoal from D84 was containerized but that sample was considered void. All of the
charcoal samples from the Cell 3 covered region were successfully retrieved on September 23, 2013
and containerized during the unloading process.
Tellco personnel maintained custody of the samples from collection through analysis.
5.4 Environmental Conditions
A rain gauge and thermometer were placed between Cell 2 and Cell 3 to monitor rainfall and air
temperatures during sampling in order to ensure compliance with the regulatory measurement criteria.
In accordance with 40 CFR, Part 61, Appendix B, Method 115:
• Measurements were not initiated within 24 hours of rainfall.
• After the placement of canisters on the Cell 3 covered region on September 22, 2013,
approximately 0.31 inches of rainfall was measured in the onsite rain gauge. As a result,
there were several pools of water throughout the covered region; however, none of the
canisters were surrounded by water and all of the earthen seals were intact.
• The minimum ambient air temperature during the sampling periods was 43 degrees F on
September 23, 2013.
6. SAMPLE ANALYSIS
6.1 Apparatus
Apparatus used for the analysis:
• Single- or multi-channel pulse height analysis system, Ludlum Model 2200 with a
Teledyne 3" x 3" sodium iodide, thallium-activated (Nal(Tl)) detector.
• Lead shielded counting well approximately 40 cm deep with 5-cm thick lead walls and a 7-
cm thick base and 5 cm thick top.
• National Institute of Standards and Technology (NIST) traceable aqueous solution radium-
226 absorbed onto 180 grams of activated charcoal.
• Ohaus Model C501 balance with 0.1-gram sensitivity.
6.2 Sample Inspection and Documentation
Once in the laboratory, the integrity of each charcoal container was verified by visual inspection of the
plastic container. Laboratory personnel checked for damaged or unsealed containers and verified that
the data sheet was complete.
No damaged or unsealed containers were observed during inspection at the Tellco analytical
laboratory. A total of 199 radon flux samples and ten blank samples were verified as valid.
4
6.3 Background and Sample Counting
The gamma ray counting system was checked daily, including background and radium-226 source
measurements prior to and after each counting session. Based on calibration statistics, using two
sources with known radium-226 content, background and source control limits were established for
each Ludlum/Teledyne counting system with shielded well (see Appendix A).
Gamma ray counting of exposed charcoal samples included the following steps:
• The length of count time was determined by the activity of the sample being analyzed,
according to a data quality objective of a minimum of 1,000 accrued counts for any given
sample.
• The sample container was centered on the Nal detector and the shielded well door was
closed.
• The sample was counted over a determined count length and then the mid-sample count
time, date, and gross counts were documented on the radon flux measurements data sheet
and used in the calculations.
• The above steps were repeated for each exposed charcoal sample.
• Approximately 10 percent of the containers counted were selected for recounting. These
containers were recounted within a few days following the original count.
7. QUALITY CONTROL (QC) AND DATA VALIDATION
Charcoal flux measurement QC samples included the following intra-laboratory analytical frequency
objectives:
• Blanks, 5 percent, and
• Recounts, 10 percent
All sample data were subjected to validation protocols that included assessments of sensitivity,
precision, accuracy, and completeness. As described below, all Method 115-required data quality
objectives (EPA, 2012) were attained.
7.1 Sensitivity
A total of ten blanks were analyzed by measuring the radon progeny activity in samples subjected to
all aspects of the measurement process, excepting exposure to the source region. These blank sample
measurements comprised approximately five percent of the field measurements. The results of the
blank sample radon flux rates ranged from -0.01 to 0.02 pCi/m2-s, with an average of approximately
0.01 pCi/m2-s. The lower limit of detection (LLD) was approximately 0.05 pCi/m2-s.
7.2 Precision
Twenty recount measurements, distributed throughout the sample set, were performed by replicating
analyses of individual field samples (see Appendix B). These recount measurements comprised
approximately 10 percent of the total number of samples analyzed. The precision of all recount
5
measurements, expressed as relative percent difference (RPD), ranged from less than 0.1 percent to
6.5 percent with an overall average precision of approximately 2.1 percent RPD. This complies with
the precision objective of 10 percent.
7.3 Accuracy
Accuracy of field measurements was assessed daily by counting two laboratory control samples with
known Ra-226 content. Accuracy of these lab control sample measurements, expressed as percent
bias, ranged from approximately -2.6 percent to +0.2 percent. The arithmetic average bias of the lab
control sample measurements was approximately -1.0 percent (see Appendix A). This complies with
the accuracy objective of +/- 10 percent.
7.4 Completeness
A combined total of 199 samples from the Cell 3 Beaches and Covered regions were verified,
representing approximately 99.5 percent completeness, which complies with the completeness
objective of 85 percent.
8. CALCULATIONS
Radon flux rates were calculated for charcoal collection samples using calibration factors derived
from cross-calibration to sources with known total activity with identical geometry as the charcoal
containers. A yield efficiency factor was used to calculate the total activity of the sample charcoal
containers. Individual field sample result values presented were not reduced by the results of the field
blank analyses.
In practice, radon flux rates were calculated by a database computer program. The algorithms utilized
by the data base program were as follows:
Equation 8.1:
2 N
pCi Rn-222/m sec = rrs*A*b*0 5(d/9175)]
where: N = net sample count rate, cpm under 220-662 keV peak
Ts = sample duration, seconds
b = instrument calibration factor, cpm per pCi; values used:
0.1699, for M-01/D-21 and
0.1702, for M-02/D-20
d = decay time, elapsed hours between sample mid-time and count mid-time
A = area of the canister, m2
Equation 8.2:
Error, 2a = 2 x
Gross Sample, cpm Background Sample,cpm +
Sample Count,t,min Background Count,t,min
x Sample Concentration Net,cpm
6
Equation 8.3:
LLU [Ts*A*b*0.5(d/9T7
where: 2.71 = constant
4.65 = confidence interval factor
Sb = standard deviation of the background count rate
Ts = sample duration, seconds
b = instrument calibration factor, cpm per pCi; values used:
0.1699, for M-01 /D-21 and
0.1702, for M-02/D-20
d = decay time, elapsed hours between sample mid-time and count mid-time
A = area of the canister, m2
9. RESULTS
9.1 Mean Radon Flux
Referencing 40 CFR, Part 61, Subpart W, Appendix B, Method 115 - Monitoring for Radon-222
Emissions, Subsection 2.1.7 - Calculations, "the mean radon flux for each region of the pile and for
the total pile shall be calculated and reported as follows:
(a) The individual radon flux calculations shall be made as provided in Appendix A EPA
86(1). The mean radon flux for each region of the pile shall be calculated by summing all
individual flux measurements for the region and dividing by the total number of flux
measurements for the region.
(b) The mean radon flux for the total uranium mill tailings pile shall be calculated as follows:
JiAi + ... J7A9 r+1... JAi
Js =
At
Where: Js = Mean flux for the total pile (pCi/m2-s)
J, = Mean flux measured in region i (pCi/m2-s)
Aj = Area of region i (m2)
At = Total area of the pile (m2)"
40 CFR 61, Subpart W, Appendix B, Method 115, Subsection 2.1.8, Reporting states "The results of
individual flux measurements, the approximate locations on the pile, and the mean radon flux for each
region and the mean radon flux for the total stack [pile] shall be included in the emission test report. Any
condition or unusual event that occurred during the measurements that could significantly affect the results
should be reported."
7
9.2 Site Results
Site Specific Sample Results (reference Appendix C)
(a) The mean radon flux for each region within Cell 3 is as follows:
Cell 3 - Beaches Region = 56.6 pCi/m2-s (based on 17,558 m2 area)
Cell 3 - Covered Region = 31.2 pCi/m2-s (based on 231,175 m2 area)
Note: Reference Appendix C of this report for the entire summary of individual measurement results.
(b) Using the data presented above, the calculated mean radon flux for Cell 3 is, as follows:
Cell 3 = 28.4 pCi/m2-s
(56.6X17,558)+(31.2X231,175) =28.4
288,858
As shown above, the arithmetic mean radon flux of the September 2013 samples for Cell 3 at
Energy Fuels White Mesa milling facility exceeds the NRC and EPA standard of 20 pCi/m2-s.
For the past several years, the site has been experiencing drought conditions, which were especially
severe during 2012 and the first half of 2013. The result of this dry weather is likely a lowering of
the moisture levels in the buried tailings and cover materials, leading to increased radon flux rates at
the site. There were a few intense storms in September 2013, which produced very heavy rain
downpours and flash flooding at Cell 3, with most of the water running off or pooling on the
surface. In the short term, these storm events have not reduce the radon flux emissions at Cell 3.
Appendix C is a summary of individual measurement results, including blank sample analysis.
Sample locations are depicted on Figure 2, which is included in Appendix D. The map was produced
by Tellco.
8
References
U. S. Environmental Protection Agency, Radon Flux Measurements on Gardinier and Royster
Phosphogypsum Piles Near Tampa and Mulberry, Florida, EPA 520/5-85-029, NTIS #PB86-
161874, January 1986.
U. S. Environmental Protection Agency, Title 40, Code of Federal Regulations, July 2012.
U. S. Nuclear Regulatory Commission Radiological Effluent and Environmental Monitoring at
Uranium Mills, Regulatory Guide 4.14, April 1980.
U. S. Nuclear Regulatory Commission, Title 10, Code of Federal Regulations, Part 40, Appendix A,
January 2013.
9
Figure 1
Large Area Activated Charcoal Canisters Diagram
1/4 m. Vcru Hole I -in Tn'rt
ScrubiNH
"ASM? t£*?43t<3^v-^*^ 5£
r
$UP(MII| Gr<l
ftH'.all'Idf
\
lO-i/I t»3
PVC End Cap
FJGiffE 1 Large-Area Radon aoltector
10
Appendix A
Charcoal Canister Analyses Support Documents
A
ACCURACY APPRAISAL TABLE
SEPTEMBER 2013 SAMPLING
ENERGY FUELS RESOURCES (USA) INC.
WHITE MESA MILL, BLANDING, UTAH
2013 NESHAPs RADON FLUX MEASUREMENTS
CELL 3
SAMPLING DATES: 9/22/13-9/23/13
SYSTEM
I.D.
DATE Bkg Counts (1
#1
min. each)
#2 #3
Source Counts (1 min. each)
#1 #2 #3
AVG NET
cpm
YIELD
cpm/pCi
FOUND
pCi
SOURCE
ID
KNOWN
pCi
% BIAS
M-01/D-21 9/24/2013 146 128 150 10116 10302 10298 10097 0.1699 59431 GS-04 59300 0.2%
M-01/D-21 9/24/2013 141 137 110 10276 10112 10239 10080 0.1699 59327 GS-04 59300 0.0%
1-01/D-21 9/25/2013 134 133 151 10037 10080 10048 9916 0.1699 58362 GS-04 59300 -1.6%
M-01/D-21 9/25/2013 143 114 118 10225 10208 10192 10083 0.1699 59349 GS-04 59300 0.1%
M-01/D-21 9/24/2013 146 128 150 10123 10043 10233 9992 0.1699 58809 GS-05 59300 -0.8%
M-01/D-21 9/24/2013 141 137 110 10072 10136 10055 9958 0.1699 58613 GS-05 59300 -1.2%
M-01/D-21 9/25/2013 134 133 151 10321 10061 10072 10012 0.1699 58929 GS-05 59300 -0.6%
M-01/D-21 9/25/2013 143 114 118 10193 10174 10169 10054 0.1699 59174 GS-05 59300 -0.2%
M-02/D-20 9/24/2013 120 113 125 10175 10205 10213 10078 0.1702 59215 GS-04 59300 -0.1%
M-02/D-20 9/24/2013 115 114 136 10070 10010 10063 9926 0.1702 58320 GS-04 59300 -1.7%
M-02/D-20 9/25/2013 139 121 131 10025 9994 10036 9888 0.1702 58096 GS-04 59300 -2.0%
M-02/D-20 9/25/2013 124 129 108 10006 10155 10001 9934 0.1702 58365 GS-04 59300 -1.6%
-02/D-20 9/24/2013 120 113 125 10144 10041 10099 9975 0.1702 58609 GS-05 59300 -1.2%
M-02/D-20 9/24/2013 115 114 136 10126 10092 10105 9986 0.1702 58672 GS-05 59300 -1.1%
M-02/D-20 9/25/2013 139 121 131 9878 9905 10092 9828 0.1702 57744 GS-05 59300 -2.6%
M-02/D-20 9/25/2013 124 129 108 10154 10018 10020 9944 0.1702 58423 GS-05 59300 •1.5%
AVERAGE PERCENT BIAS FOR ALL ANALYTICAL SESSIONS: -1.0%
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION:
CLIENT: B^gr^ 13 ^fjgj^gj (0^5/£)
System
Scaler S/N:
ID: fyO\/P ijJ
Calibration Check Log
Due Date: Calibration Date:
High Voltage: jQ2>S Window: 4.42 Thrshld: 2.20
Source ID/SN: O V Source Activity: 5^"3 £/
8^ to I 5V 3c = to 1~7/
Detector S/N: (9 M 1 g>3 3
Blank Canister Bkgd. Range, cpm: 2ff =
Gross Source Range, cpm: 2 o = j 32,3 to \ OG^ l 3 O = 9 to 1 Q7^<5
Technician:
All counts times are one minute.
Date By Background Counts (1 min. each)
#1
w
#2 #3 Avg. #1
Source Counts (1 min. each)
#2 #3 Average
ok?
Y/N
Hi toil Ko 1C^-B^
!
j^sSl! BB
T5'
TBI A±2_ lot & It) ^3
LLfi. 12.5~
IQQ37 /ooso
Y/N: Y = average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: W tA*$<\ H^M } % WA1\YV^ > H.T
CLIENT: gj^g^J_got^k ^bOUT^S £i(£4)
Calibration Check Log
System ID: Calibration Date Due Date:
Scaler S/N:
Detector S/N: O 4 I 5 3 3
High Voltage: tOjvS Window: 4.42 Thrshld: 2.20
Source ID/SN: ^ff^/bS" Source Activity: j^jjjf^g
to IS4 3a = _M to HI Blank Canister Bkgd. Range, cpm: 2(5-
Gross Source Range, cpm: 2 a = 9 8<3£T to | gjTj 0? 3 o = 97^^ to / C 6?7 /
Technician: 3^ %^
All counts times are one minute.
Date By Backg round Counts (1 min. each)
#1 #2 #3 Avg. #1
Source Counts (1 min. each)
#2 #3 Average
ok?
Y/N
50
^3 53: 1 JJLL IQlS-l
ii£_
Y/N: Y = average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION:
CLIENT: bw^TU TnA,-g>S Tv£ Stp UVYjgS
System ID: ^-0^/>>-Xt7
Calibration Check Log
Calibration Date: WW/jj Due Date:
Scaler S/N: ST/SO 3 High Voltage: ) Q2S Window: 4.42 Thrshld: 2.20
Detector S/N: ^ Source ID/SN: ^f^Y O f Source Activity:
Blank Canister Bkgd. Range, cpm: 2o = _
78 to i 3o= fc^ to no Gross Source Range, cpm: 2a = to 10^27 3 0= ^817 to lOkfc?
Technician:
All counts times are one minute.
Date By Background Counts (1 min. each)
#1 #2 #3 Avg.
Source Counts (1 min. each)
#1 #2 #3 Average
ok?
Y/N
13C> \OOlO
Y/N: Y = average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: W K *4tS W<^*l KjU^ diVlCj ) \J\\
CLIENT: Eggjg^V P\Agt< ^SOUL^d^ CUS/Q
Calibration Check Log
System ID: /l/[-Q^ /T) - 2-Q Calibration Date: Due Date:
Scaler S/N: S I g G? 3 High Voltage: I <3 Window: 4.42 Thrshld: 2.20
Detector S/N: O 4 j b 3^ Source ID/SN^^^^/^S-QS" Source Activity: ^f^*
Blank Canister Bkgd. Range, cpm: 2o= "7^ to t S 1 _3o= to I 7
Gross Source Range, cpm: 2v= to iQ4^)6> 3q= 9683 to \oy<*i
Technician:
All counts times are one minute.
Fbsr
Pre
Date By Background Counts (1 min. each)
#1 #2 #3 Avg-#1
Source Counts (1 min. each)
#2 #3 Average
ok?
Y/N
oJ3B ioo<-tl V3G
i3a 131 CMOS'
Y/N: Y = average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
BALANCE OPERATION DAILY CHECK
Balance Model: OWfluS Po "a " ty*"1 5M:tZ3^'7
Standard Weight (g): 2- P<3*0 ^
Date Pre-check (g) Post-check (g) O.K. ± 0.1 % ? By
9/*4/'3 -2QO.O ^5 •2
Appendix B
Recount Data Analyses
B
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.00
PILE: 3 BATCH: D SURFACE: TAILINGS
AREA: BEACH DEPLOYED: 6 10 13 RETRIEVED: 6
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
AIR TEMP MIN: 54°F
11 13 CHARCOALBKG:
DATA ENTRY BY: DLC
WEATHER: NO RAIN
156 cpm Wt.Out: 180.0 g.
TARE WEIGHT: 29.2 g.
GRID
LOCATION
DIO
RECOUNT
SAMPLE
I. D.
DIO
DIO
RETRIV ANALYSIS MID-TIME CNT GROSS
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS
10
10
21
21
14 13
15 13
15 36
28
GROSS
36731
33347
214 . 6
214 . 6
RADON
WT IN pCi/m2s pCi/m2s pCi/m2s
93 .6
96 .4
9.4
9 . 6
0 . 05
0 . 05
PRECISION
% RPD
2 . 9!
D2 0
RECOUNT
D2 0
D2 0
22
22
25
25
14 13
15 13
15 43
28
15886
14446
214
214
40 . 5
41 . 7
4 . 1
4.2
0 . 05
0 . 05 2 . 9!
D3 0
RECOUNT
34
34
34
34
14 13
15 13
15 51
30
3185
2952
229
229
7.8
8.2
0.8
0 . 8
0 . 05
0 . 05 5 . 0%
D4 0
RECOUNT
D4 0
D4 0
46
46
38
38
14 13
15 13
16 1
30
23613
21195
215
215
60.8
61. 8
0 . 05
0 . 05 1.6-
D50
RECOUNT
D50
D50
57
57
42
42
14 13
15 13
16
31
14425
12790
214
214
37.2
37 . 2
0 . 05
0 . 05 0 . 0%
D60
RECOUNT
D60
D60
10
10
19
19
14 13
15 13
16 15
31
1409
1184
217
217
3 .2
3 . 0
05
05 6.5'
D7 0
RECOUNT
D70
D70
23
23
24
24
14 13
15 13
16
8
22
33
28518
25785
217
217
D80
RECOUNT
D80
D80
35
35
32
32
14 13
15 13
16 30
33
9755
8590
218 .4
218 .4
24 . 9
24 . 7
2 . 5
2 . 5
0 . 05
0 . 05 0 .8%
D90
RECOUNT
45
45
37
37
14 13
15 13
16 39
34
10456
9620
217 . 0
217 . 0
D100
RECOUNT
D100
D100
55
55
41
41
14
15
13
13
16
8
52
34
46892
41638
215
215
122 . 3
122 . 2
12 .2
12 .2
0 . 05
0 . 05 0 . V
AVERAGE PERCENT PRECISION FOR THE CELL 3 BEACH REGION: 2 . 6!
Page 1 of 1
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.00
PILE: 3 BATCH: J SURFACE: SOIL AIR TEMP MIN: 43°F WEATHER: RAINED 0.31 in. AFTER PLACEMENT
AREA: COVER DEPLOYED: 9 22 13 RETRIEVED: 9 23 13 CHARCOAL BKG: 149 cpm Wt.Out: 180.0 g.
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC DATA ENTRY BY: DLC TARE WEIGHT: 29.2 g.
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
GRID SAMPLE RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON ± LLD PRECISION
LOCATION I. D. HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2a pCi/m2s % RPD
J10 10 30 24 13
25 13
11 20 6850
5931
230 11
J10 10 30 50 230 11.6 1 . 7
J10
RECOUNT
0 . 03
0 . 04
J2 0
RECOUNT
J2 0
J2 0
28
28
45
45
24 13
25 13
11
9
32
52
1298
1159
231
231
0 . 03
0 . 04 0 . 0!
J3 0
RECOUNT
J3 0
J3 0
50 10
50 10
24 13
25 13
11
9
44
54
16153
14139
231
231
27
28
0 . 03
0 . 04
J4 0
RECOUNT
J4 0
J4 0
10 10
10 10
10
10
12
12
24 13
25 13
11
9
56
54
33416
28417
231
231
57
57
5 . 7
5 . 7
0 . 03
0 . 04 0 .3
J50
RECOUNT
J50
J50
50
50
42
42
24 13
25 13
12
9
5
56
43709
37883
230
230
75
77
7.6
7 . 7
0 . 03
0 . 04 1 .8%
J60
RECOUNT
J6 0
J60
10
10
10
10
52
52
24 13
25 13
12 16
56
3575
3060
230
230
6 . 0
6 . 0
0 . 6
0 . 6
0 . 03
0 . 04 0 . 0%
J70
RECOUNT
J70
J70
10
10
30
30
10
10
10
10
24 13
25 13
12
9
23
59
27284
22177
229 .7
229 . 7
47 .4
45.2
4.7 0.03
4.5 0.04 4 . 8;
J80
RECOUNT
J8 0
J80
10
10
50
50
10
10
20
20
24 13
25 13
12
9
32
59
4374
3647
232 . 9
232 . 9
7.4
7.2
0 . 7
0 . 7
0 . 03
0 . 04 2 . 7!
J90
RECOUNT
J90
J90
10
10
38
38
10
10
38
38
24 13
25 13
12
10
40
1
33520
29126
232 . 0
232 . 0
57 . 5
58 . 5
5 . 8
5 . 9
0 . 03
0 . 04
J100
RECOUNT
J100
J100
10
10
18
18
10
10
48
48
24
25
13
13
12
10
48
1
2011
1731
231
231
0 . 3
0 . 3
0 . 03
0 . 04 0 . 0!
AVERAGE PERCENT PRECISION FOR THE CELL 3 COVER REGION: 1. 6!
Page 1 of 1
Appendix C
Radon Flux Sample Laboratory Data (including Blanks)
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO: 13004.00
PILE: 3 BATCH: D SURFACE: TAILINGS AIR TEMP MIN: 54°F
AREA: BEACH DEPLOYED: 6 10 13 RETRIEVED: 6 11 13 CHARCOAL BKG:
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC DATA ENTRY BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
WEATHER: NO RAIN
156 cpm Wt.Our. 180.0 g.
TARE WEIGHT: 29.2 g.
LOCATION
DOl
D02
D03
D04
D05
D06
D07
D08
D09
DIO
Dil
D12
D13
D14
D15
D16
D17
D18
D19
D2 0
D21
D22
D23
D24
D25
D26
D2 7
D28
D29
D3 0
D31
D32
D33
D34
D3 5
D36
D3 7
SAMPLE
I. D.
DOl
D02
D03
D04
DEPLOY RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON + LLD
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS
D07
D08
Dil
D12
D13
D14
D15
D16
D18
D19
D20
D21
D22
D23
D24
D2 5
D26
D2 7
D28
D3 0
D31
D32
D33
D34
D3 5
D36
0
1
2
3
4
5
6
8
9
10
11
12
13
15
16
17
18
19
20
22
23
24
26
27
28
29
30
32
33
34
35
36
37
39
40
41
42
18
18
19
19
19
20
20
21
21
21
22
22
23
23
23
24
24
25
25
25
26
26
27
27
27
33
33
33
34
34
35
35
35
36
36
37
37
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
13 15
13 15
15
15
15
15
15
15
15
15
15
15
15
30
30
31
31
33
33
34
34
36
36
37
37
39
39
40
40
42
42
43
43
45
45
47
47
48
48
50
50
51
51
54
54
56
56
57
57
59
25666
17048
15001
21067
19830
15664
27469
29917
30797
36731
44260
38931
24099
24057
27440
28177
40206
11191
20341
15886
19281
45745
44487
35694
27180
34287
16258
15341
8295
3185
1488
1819
3621
9812
6877
30886
29551
214
219
215
213
219
210 . 0
222 . 5
215 . 0
216
214
214
215
214 .7
216 .7
215 .2
218 .4
213 .8
210 .4
213 . 0
214 . 9
213 . 8
213 . 0
216 . 7
213
202
219
215
216 . 0
220 . 5
229
237
221
219
215 . 8
216 . 6
217 .1
218 . 5
65
43
37
53
50
39
69
76 . 0
78
93
113
99
61
61
70
71
103 . 0
28 . 3
51. 9
40
49
117
114
91
69 . 8
87 . 7
41
39
21 . 0
7 . 8
1
1
9
24
17
79
76
4 . 0
7
7
7
9
11
9
6
6
7
7
10
2
5
4
4
11
11
9
7
8.8
4 . 1
0.8
0.2
0.2
0 . 9
2 . 5
1 . 7
7 . 9
7.6
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 .05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 .05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
Page 1 of 3
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.00
PILE: 3 BATCH: D SURFACE: TAILINGS AIR TEMP MIN: 54°F
AREA: BEACH DEPLOYED: 6 10 13 RETRIEVED: 6 11 13 CHARCOAL BKG:
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC DATA ENTRY BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
WEATHER: NO RAIN
156 cpm Wt. Out: 180.0 g.
TARE WEIGHT: 29.2 g.
GRID
LOCATION
SAMPLE
I. D.
DEPLOY RETRIV ANALYSIS MID-TIME GROSS GROSS RADON
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS
D38
D3 9
D4 0
D41
D42
D43
D44
D45
D46
D47
D4 8
D4 9
D50
D51
D52
D53
D54
D55
D56
D57
D58
D59
D6 0
D61
D62
D63
D64
D65
D66
D67
D68
D69
D70
D71
D72
D73
D74
D3 8
D3 9
D4 0
D41
D4 2
D4 3
D44
D4 5
D46
D4 7
D48
D49
D50
D51
D52
D53
D54
D55
D56
D57
D58
D59
D60
D61
D62
D63
D64
D65
D66
D67
D68
D69
D70
D71
D72
D73
D74
8 43
44
46
47
48
49
50
51
53
54
55
56
57
0
1
2
3
4
5
6
7
9
10
11
12
14
15
17
18
19
20
22
23
24
25
26
28
8 37
38
38
39
39
39
40
40
41
41
41
42
42
16
16
16
17
17
18
18
19
19
19
20
20
21
21
22
22
22
23
23
24
24
25
25
25
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
13 15
13 16
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
59
1
1
2
2
4
4
5
5
6
6
11
11
12
12
14
14
15
15
17
17
18
18
20
20
21
21
22
22
24
24
25
25
25972
34906
23613
20948
55702
61488
36252
10080
44216
33799
31944
11929
14425
21918
11143
112937
11280
14006
26934
23101
14279
17652
1409
2579
16460
15796
15549
30898
5479
18143
24530
31227
28518
16019
21860
2147
16838
216
216
215
215
219
216
219
221
216 .8
221 .1
221 . 7
216 . 8
214
217
222
221
207
227
220
223
229
220
217
222
215
213
214
216
209
212
216 . 8
215 .4
217
214
217
218
211
66 .8
90 . 1
60 . 8
54 . 0
144 . 0
159 . 5
93 . 7
25 . 8
114
87
82
30
37
55
28 . 2
289 . 9
28 . 5
35 . 6
68 . 8
59
36
45
3
6
1
3
1
2
3
42 . 0
40 .4
39
79
13
46
63
80
73
41
56
5
43
6
9
6
5
14
15
9
2
11
8 . 3
3 .1
3 . 7
5 . 6
2 . 8
29.0
8 . 0
1.4
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 .05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
Page 2 of 3
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO: 13004.00
PILE: 3 BATCH: D SURFACE: TAILINGS
AREA: BEACH DEPLOYED: 6 10 13 RETRIEVED: 6
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
AIR TEMP MIN: 54°F
11 13 CHARCOAL BKG:
DATA ENTRY BY: DLC
WEATHER: NO RAIN
156 cpm Wt. Out: 180.0 g.
TARE WEIGHT: 29.2 g.
GRID
LOCATION
D75
D76
D77
D78
D79
D80
D81
D82
D83
D84
D85
D86
D87
D88
D89
D90
D91
D92
D93
D94
D95
D96
D97
D98
D99
DlOO
SAMPLE DEPLOY RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON ± LLD
I.D. HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS
D75
D76
D77
D78
D79
D80
D81
D82
D83
D84
D85
D86
D87
D88
D89
D90
D91
D92
D93
D94
D95
D96
D97
D98
D99
DlOO
BLANK CANISTER ANALYSIS:
GRID
LOCATION
D BLANK 1
D BLANK 2
D BLANK 3
D BLANK 4
D BLANK 5
SAMPLE
I. D.
D BLANK 1
D BLANK 2
D BLANK 3
D BLANK 4
D BLANK 5
29
30
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50 8
51 8
52 8
53 8
54 8
55 8
AVERAGE
8
26
31
31
32
32
32
33
33
34
34
35
35
35
36
36
37
37
38
38
38
39
39
40
40
41
41
14
14
14
14
14
14
14
13
13
13
13
13
13
13
14 13
14 13
14
14
14
14
14
14
14
14
14
14
13
13
13
13
13
13
13
13
13
13
14 13
14 13
14
14
13
13
14 13
14 13
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
26
26
28
28
30
30
31
31
33
36
36
37
37
39
39
40
40
42
45
48
49
51
51
52
52
RADON FLUX RATE FOR THE CELL
6625
5583
25832
42826
18663
9755
27284
26309
35425
19980
29543
22563
23463
31247
10456
9458
1792
1051
1454
1255
1050
3385
11950
21673
46892
3 BEACH
215
217
214
216
214
218
210
216
213
220 . 0
214 . 7
215 .4
217 .2
215 . 6
217 . 0
222 . 3
218 .
215 .
216 .
216 .
221.
220 .
214 .
216 . 0
215 . 8
REGION:
16 . 8
14 . 0
66
110
48
24
70
67
91
51
76
58
1
1
6
11
4
2
7
6 . 8
9.2
5.2
7 . 6
60 . 7
81.1
26 .8
24 . 3
4.3
2 3 0 2
0 . 9
2 . 9
1. 0
8.5
30 . 8
56 .4
122 . 3
56 . 6
" 0.9 MIN
289.9 MAX
0
0
0
0
3
5
12
pCi/m2s
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 .05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 .05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
NOT SEALED
RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON ± LLD
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS
45
45
45
45
45
8
8
10
10
10
10
10
14 13
14 13
14 13
14 13
14 13
12
12
12
12
13
46
46
57
57
7
10
10
10
10
10
1642
1521
1605
1641
1586
206 . 3
206 . 2
209 . 9
207 . 0
207 . 7
AVERAGE BLANK CANISTER ANALYSIS FOR THE CELL 3 BEACH REGION;
Page 3 of 3
0 .02
-0.01
0 . 01
0 . 02
0 . 01
0 . 01
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
pCi/m2 s
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO: 13004.00
PILE: 3 BATCH: J SURFACE: SOIL
AREA: COVER DEPLOYED: 9 22 13 RETRIEVED: 9
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
AIR TEMP MIN: 43°F
23 13 CHARCOAL BKG:
DATA ENTRY BY: DLC
WEATHER: RAINED 0.31 in. AFTER PLACEMENT
149 cpm Wt. Out: 180.0 g.
TARE WEIGHT: 29.2 g.
GRID
LOCATION
J01
J02
J03
J04
J05
J06
J07
J08
J09
J10
Jll
J12
J13
J14
J15
J16
J17
J18
J19
J2 0
J21
J22
J2 3
J24
J25
J26
J2 7
J2 8
J2 9
J3 0
J31
J32
J33
J34
J3 5
J3 6
J3 7
SAMPLE
I. D.
JOl
J02
J03
J04
J05
J06
J07
J08
J09
J10
Jll
J12
J13
J14
J15
J16
J17
J18
J19
J2 0
J21
J22
J23
J24
J25
J26
J2 7
J28
J29
J3 0
J31
J32
J3 3
J34
J3 5
J3 6
J3 7
DEPLOY RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON ± LLD
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2s pCi/m2 s COMMENTS
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
10
10
10
53
54
56
58
0
2
4
10
11
13
15
17
19
20
22
24
26
28
30
32
34
36
38
42
44
46
48
50
52
54
56
58
0
2
4
9
9
9
9
10
10
10
10
10
10
10
10
10
21
22
23
24
25
26
27
28
29
30
31
32
33
34
40
41
42
43
44
45
46
47
48
49
50
51
52
53
1
2
3
4
5
6
7
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
11
11
11
11
13 11
13 11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
12
12
15
15
18
17
21
20
23
24
26
26
28
28
29
29
31
32
34
34
37
36
38
40
43
43
44
44
46
46
47
48
51
52
55
6898
10342
5708
13769
1156
1885
1194
1151
1122
6850
13238
1545
5738
23383
3326
2732
3593
1525
2377
1298
3045
1245
1486
1396
1334
1265
7933
3890
36588
16153
26681
6774
4037
1020
1721
1040
1197
235 . 7
225 . 7
228
233
230
226
231
229 . 7
228 . 3
230 . 2
229 . 1
231 . 7
222 . 9
232
231
230
227
230
231
231
226 . 0
227 . 7
226 . 5
225 . 8
233 . 6
230 . 7
229 . 2
230
229
231
227
229 . 0
231 .3
229
227
227
229
11
17
9
23 . 1
0 . 7
1 .
0 .
1 .
0 .
11 .
22 .
1 .
9 .
39 .
5 .
4 .
5 .
2 .
3 .
0 .
4 .
1 .
1 .
2
2
0
13
6
62
27
45
11
6
0
2
0
0 . 0
0.2
0 . 0
0 . 5
0 . 0
1 . 3
0 . 8
0.7
0 .1
0 . 3
0 . 0
0 .1
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
—
15' West
Page 1 of 3
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO: 13004.00
PILE: 3 BATCH: J SURFACE: SOIL AIR TEMP MIN: 43°F
AREA: COVER DEPLOYED: 9 22 13 RETRIEVED: 9 23 13 CHARCOAL BKG:
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC DATA ENTRY BY: DLC
COUNTING SYSTEM LD.: M01/D21, M02/D20 CAL. DUE: 6/14/14
WEATHER: RAINED 0.31 in. AFTER PLACEMENT
149 cpm Wt. Out: 180.0 g.
TARE WEIGHT: 29.2 g.
LOCATION
J3 8
J39
J4 0
J41
J42
J4 3
J44
J45
J46
J4 7
J4 8
J4 9
J50
J51
J52
J53
J54
J55
J56
J57
J58
J59
J6 0
J61
J62
J63
J64
J65
J66
J67
J68
J6 9
J70
J71
J72
J73
J74
SAMPLE
J3 8
J3 9
J4 0
J41
J42
J43
J44
J45
J46
J4 7
J4 8
J4 9
J50
J51
J52
J53
J54
J55
J56
J57
J58
J59
J60
J61
J62
J63
J64
J65
J66
J67
J68
J69
J70
J71
J72
J73
J74
DEPLOY RETRIV ANALYSIS
HR MIN HR MIN MO DA YR
MID-TIME CNT GROSS
HR MIN (MIN) COUNTS
GROSS
WT IN
RADON ± LLD
pCi/m2s pCi/m2s pCi/m2s COMMENTS
10
10
10
10
10
9
9
9
9
9
9
9
9
9
9
9
9
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
12
14
36
38
40
42
44
46
48
50
52
54
56
58
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
10
10
10
10
10
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
10
10
10
10
10
10
10
10
11
12
13
15
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
8
9
10
11
12
13
14
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
11
11
11
11
11
11
11
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
54
56
56
58
58
59
59
2
1
3
3
5
5
7
8
10
10
13
12
14
14
16
16
17
17
19
19
20
20
22
22
23
23
25
25
26
27
5544
117844
33416
1050
14556
4058
13174
1741
23737
7471
7625
1346
43709
27589
1392
1703
1415
21758
5145
23379
8072
6530
3575
7687
17601
101945
8812
6383
83849
50929
27268
23167
27284
17813
14204
60012
1440
227
227
231
234
232
233
230
233
230 . 8
232 . 3
231 . 1
230 . 6
230 . 9
230 . 8
231
229
224
232
230
229
229
232
230
235
232
232
231
234
228
229
231
236 . 0
229 . 7
232 .4
232 . 0
236 . 8
232 . 9
9
202
57
1
22
1
40
0
75
1
1
2
37
8
40
30
178
15
10
146
89
47
40
47
30
24
24 . 8
6 . 8
12 . 7
13 . 0
47 . 8
0
2
2
7
7
6
13 . 8
11 . 2
6 . 0
13 . 2
0
20
5
0
2
0
2
0
4
1
1
0
7
4
0
0
0
3 . 8
0 . 9
4 .1
1.4
1 . 1
0
1
3
17
1
14 . 7
8 . 9
105 . 0
1.0
4
4
4
3
2
10
0
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
Page 2 of 3
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO: 13004.00
PILE: 3 BATCH: J SURFACE: SOIL
AREA: COVER DEPLOYED: 9 22 13 RETRIEVED: 9
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC
COUNTING SYSTEM LD.: M01/D21, M02/D20 CAL. DUE: 6/14/14
AIR TEMP MIN: 43°F
23 13 CHARCOAL BKG:
DATA ENTRY BY: DLC
WEATHER: RAINED 0.31 in. AFTER PLACEMENT
149 cpm Wt.Out: 180.0 g.
TARE WEIGHT: 29.2 g.
GRID
LOCATION
J75
J76
J77
J78
J79
J80
J81
J82
J83
J84
J85
J86
J87
J88
J89
J90
J91
J92
J93
J94
J95
J96
J97
J98
J99
JlOO
SAMPLE DEPLOY RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON + LLD
I. D. HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS
J75
J76
Jll
J78
J79
J8 0
J81
J82
J83
J84
J85
J86
J87
J88
J89
J90
J91
J92
J93
J94
J95
J96
J97
J98
J99
JlOO
10 40 10
10 42 10
10 44 10
10 46 10
10 48 10
10 50 10
10 52 10
10 54 10
10 52 10
10 50 10
10 48 10
10 46 10
10 44 10
10 42 10
10 40 10
10 38 10
10 36 10
10 34 10
10 32 10
10 30 10
10 28 10
10 26 10
10 24 10
10 22 10
10 20 10
10 18 10
LOCATION
J BLANK 1
J BLANK 2
J BLANK 3
J BLANK 4
J BLANK 5
SAMPLE
I. D.
J BLANK 1
J BLANK 2
J BLANK 3
J BLANK 4
J BLANK 5
8
8
15
16
17
18
19
20
22
24
25
26
27
28
29
31
37
38
39
40
41
42
43
44
45
46
47
48
24 13
24 13
24
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
24 13
12
12
13 12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
29 1
29 1
31 1
31 1
32 1
32 1
34 1
34 1
35 1
35 1
37 1
37 1
38 1
38 1
40 1
40 1
41 1
41 1
43 1
43 1
44 1
44 1
46 1
46 1
48 1
48 1
AVERAGE RADON FLUX RATE FOR THE CELL
BLANK CANISTER ANALYSIS:
3780
6619
67879
7772
15305
4374
5092
2161
61621
3345
1116
26839
9349
171520
1846
33520
3586
4391
53573
96400
54156
108969
28709
2275
3637
2011
3 COVER
232 .5
230 . 0
233
233
232
232
231
232 . 8
229 .4
230 . 5
228 . 7
230 . 9
231 . 8
225 . 8
231.4
232 . 0
227 . 0
233
233
233
231
234
229
229
232
231
RETRIV ANALYSIS MID-TIME CNT GROSS
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS
REGION:
GROSS
6
11
119
13
26
7
3
108
5
1
46
16 . 0
297 . 6
2
57
5
7
91
164
92
185
48
3
5
3
0
1
11
1
2
0
0
0
10
0
0
4
1
29 . 8
0
5
0
0
9
16
9
18
4
0
0
0
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
31.2 pCi/m2s
0.2
297.6
MIN
MAX
RADON
WT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS
35
35
35
35
35
10
10
10
10
10
24 13
24 13
24 13
24 13
24 13
54
54
6
6
20
10
10
10
10
10
1484
1541
1558
1542
1600
209 . 5
209 . 1
211 .4
209 . 9
212 .4
AVERAGE BLANK CANISTER ANALYSIS FOR THE CELL 3 COVER REGION:
Page 3 of 3
0 . 00
0 .01
0 .01
0 . 01
0 . 02
0.01
0 . 02
0 . 02
0 . 02
0 . 02
0 . 02
pCi/m2 s
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
Appendix D
Sample Locations Map (Figure 2)
D
CELL 1
5
3
«7LV
li/
!'OUf)
DftfQ0ft,
-CELL 4B
l HI
WHITE MESA MILL
BLANDING. UTAH
NESHAPS 2013
JUNE & SEPTEMBER 2013
RADON FLUX SAMPLING
PREPARED FOR
ENERGY FUELS RESOURCES
JOl O - SAMPLE LOCATION C COVERED AREAS
FIGURE 2
\
SCALEIN FEET
20O 100 0 200
TCLICO
ENVIRONMENTAL. LLC
THIS DRAWING ISTHfc PROPERTY OF TELLCO
ENVIRONMENTAL, LLC, AND IS NOT TO BE REPRODUCED, MODIFIED OR USED FOR ANY OTHER PROJECT OR EXTENSION OF THIS PROJECT EXCEPT BY AGREEMENT WITH TELLCO.
ATTACHMENT 3
Tellco Report on Annual Radon Flux Monitoring
December 2013
National Emission Standards for Hazardous Air Pollutants
2013 Radon Flux Measurement Program
White Mesa Mill
6425 South Highway 191
Blanding, Utah 84511
4th Quarter 2013 Sampling Results
Cell 3
Prepared for: Energy Fuels Resources (USA) Inc.
6425 S. Highway 191
P.O. Box 809
Blanding, Utah 84511
Prepared by: Tellco Environmental
P.O. Box 3987
Grand Junction, Colorado 81502
TABLE OF CONTENTS
Page
1. INTRODUCTION 1
2. SITE HISTORY AND DESCRIPTION 1
3. REGULATORY REQUIREMENTS FOR THE SITE 2
4. SAMPLING METHODOLOGY 2
5. FIELD OPERATIONS 3
5.1 Equipment Preparation 3
5.2 Sample Locations, Identification, and Placement 3
5.3 Sample Retrieval 3
5.4 Environmental Conditions 4
6. SAMPLE ANALYSIS 4
6.1 Apparatus 4
6.2 Sample Inspection and Documentation 4
6.3 Background and Sample Counting 5
7. QUALITY CONTROL (QC) AND DATA VALIDATION 5
7.1 Sensitivity 5
7.2 Precision 5
7.3 Accuracy 6
7.4 Completeness 6
8. CALCULATIONS 6
9. RESULTS 7
9.1 Mean Radon Flux 7
9.2 Site Results 8
References 9
Figure 1 10
Appendix A. Charcoal Canister Analyses Support Documents
Appendix B. Recount Data Analyses
Appendix C. Radon Flux Sample Laboratory Data, Including Blanks
Appendix D. Sample Locations Map (Figure 2)
i
1. INTRODUCTION
During June 10-11, 2013 and December 03-04, 2013 Tellco Environmental, LLC (Tellco) of Grand
Junction, Colorado, provided support to Energy Fuels Resources (USA) Inc. (Energy Fuels) to
conduct radon flux measurements regarding the required National Emission Standards for Hazardous
Air Pollutants (NESHAPs) Radon Flux Measurements. These measurements are required of Energy
Fuels to show compliance with Federal Regulations (further discussed in Section 3 below). The
standard is not an average per facility, but is an average per radon source. The standard allows mill
owners or operators the option of either making a single set of measurements or making
measurements over a one year period (e.g., weekly, monthly, or quarterly intervals).
Previously during June 2013, Energy Fuels with support from Tellco conducted radon flux
measurements on Cell 3 with the intention of performing a single set of measurements to represent
Cell 3 for the year 2013. However, the arithmetic average radon flux rate of the June 2013 sampling
for Cell 3 was above the regulatory standard of 20 picoCuries per square meter per second (pCi/m2-s);
and in response, Energy Fuels has begun conducting radon flux measurements for Cell 3 covered
region on a quarterly basis, while opting to use the results from the June 2013 sampling of the Cell 3
exposed tailings region for the calculations of the quarterly weighted averages for Cell 3.
This report presents the mean radon flux for Cell 3 using the measurement results of the June 2013
sampling of the Cell 3 exposed tailings region and the results of the December sampling of the Cell 3
covered region. Tellco was contracted to provide radon canisters, equipment, and canister placement
personnel as well as lab analysis of samples. Energy Fuels personnel provided support for loading and
unloading charcoal from the canisters. This report details the procedures employed by Energy Fuels
and Tellco to obtain the results presented in Section 9.0 of this report.
2. SITE DESCRIPTION
The White Mesa Mill facility is located in San Juan County in southeastern Utah, six miles south of
Blanding, Utah. The mill began operations in 1980 for the purpose of extracting uranium and
vanadium from feed stocks. Processing effluents from the operation are deposited in four lined cells,
which vary in depth. Cell 1, Cell 4A, and Cell 4B did not require radon flux sampling, as explained in
Section 3 below. Cell 2 sampling results are presented in separate reports.
Cell 2 has a total area of approximately 270,624 square meters (m2) and is comprised of one region
which requires NESHAPs radon flux monitoring. This cell has been filled and covered with interim
soil cover of varying thickness; there are no exposed tailings or standing liquid within Cell 2.
Cell 3 is nearly filled with tailings sand and is undergoing pre-closure activities. This cell, which has
a total area of 288,858 m2, is comprised of two source regions that require NESHAPs radon
monitoring: approximately 231,175 m of soil cover of varying thickness and approximately 17,558
m2 of exposed tailings "beaches". The remaining approximately 40,125 m2 was covered by standing
liquid in lower elevation areas. The size of the beaches region during June 2013 is smaller than it was
in 2012, while size of the covered region is larger than in 2012.
1
3. REGULATORY REQUIREMENTS FOR THE SITE
Radon emissions from the uranium mill tailings at this site are regulated by the State of Utah's
Division of Radiation Control and administered by the Utah Division of Air Quality under generally
applicable standards set by the Environmental Protection Agency (EPA) for Operating Mills.
Applicable regulations are specified in 40 CFR Part 61, Subpart W, National Emission Standards for
Radon Emissions from Operating Mill Tailings, with technical procedures in Appendix B. At present,
there are no Subpart T uranium mill tailings at this site. These regulations are a subset of the
NESHAPs. According to subsection 61.252 Standard, (a) radon-222 emissions to ambient air from an
existing uranium mill tailings pile shall not exceed an average of 20 pCi/m2-s for each pile or region.
Subsection 61.253, Determining Compliance, states that: "Compliance with the emission standard in
this subpart shall be determined annually through the use of Method 115 of Appendix B." The
repaired Cell 4A, and newly constructed Cell 4B, were both constructed after December 15, 1989
and each was constructed with less than 40 acres surface area. Cell 4A and 4B comply with the
requirements of 40 CFR 61.252(b), therefore no radon flux measurements are required on either
Cell 4A or 4B.
4. SAMPLING METHODOLOGY
Radon emissions were measured using Large Area Activated Charcoal Canisters (canisters) in
conformance with 40 CFR, Part 61, Appendix B, Method 115, Restrictions to Radon Flux
Measurements, (EPA, 2012). These are passive gas adsorption sampling devices used to determine
the flux rate of radon-222 gas from a surface. The canisters were constructed using a 10-inch
diameter PVC end cap containing a bed of 180 grams of activated, granular charcoal. The prepared
charcoal was placed in the canisters on a support grid on top of a Vi inch thick layer of foam and
secured with a retaining ring under VA inches of foam (see Figure 1, page 11).
Two hundred sampling locations were distributed throughout Cell 3 (comprised of two source regions
requiring monitoring) as depicted on the Sample Locations Map (see Figure 2, Appendix D). Each
charged canister was placed directly onto the surface (open face down) and exposed to the surface for
24 hours. Radon gas adsorbed onto the charcoal and the subsequent radioactive decay of the
entrained radon resulted in radioactive lead-214 and bismuth-214. These radon progeny isotopes emit
characteristic gamma photons that can be detected through gamma spectroscopy. The original total
activity of the adsorbed radon was calculated from these gamma ray measurements using calibration
factors derived from cross-calibration of standard sources containing known total activities of
radium-226 with geometry identical to the counted samples and from the principles of radioactive
decay.
After approximately 24 hours, the exposed charcoal was transferred to a sealed plastic sample
container (to prevent radon loss and/or further exposure during transport), identified and labeled, and
transported to the Tellco laboratory in Grand Junction, Colorado for analysis. Upon completion of on-
site activities, the field equipment was alpha and beta-gamma scanned for possible contamination
resulting from fieldwork activities. All field equipment was surveyed by Energy Fuels Radiation
Safety personnel and released for unrestricted use. Tellco personnel maintained custody of the
samples from collection through analysis.
2
5. FIELD OPERATIONS
5.1 Equipment Preparation
All charcoal was dried at 110°C before use in the field. Unused charcoal and recycled charcoal were
treated the same. 180-gram aliquots of dried charcoal were weighed and placed in sample containers.
Proper balance operation was verified daily by checking a standard weight. The balance readout
agreed with the known standard weight to within ±0.1 percent.
After acceptable balance check, empty containers were individually placed on the balance and the
scale was re-zeroed with the container on the balance. Unexposed and dried charcoal was carefully
added to the container until the readout registered 180 grams. The lid was immediately placed on the
container and sealed with plastic tape. The balance was checked for readout drift between readings.
Sealed containers with unexposed charcoal were placed individually in the shielded counting well,
with the bottom of the container centered over the detector, and the background count rate was
documented. Three five-minute background counts were conducted on ten percent of the containers,
selected at random to represent the "batch". If the background counts were too high to achieve an
acceptable lower limit of detection (LLD), the entire charcoal batch was labeled non-conforming and
recycled through the heating/drying process.
5.2 Sample Locations, Identification, and Placement
On June 10, 2013, one hundred sampling locations were spread out throughout the Cell 3 beaches
region; and on December 03, 2013, one hundred sampling locations were spread out throughout the
Cell 3 covered region. A sample identification number (ID) was assigned to every sample point, using
a sequential alphanumeric system indicating the charcoal batch and physical location within the
region (e.g., D01...R100). This ID was written on an adhesive label and affixed to the top of the
canister. The sample ID, date, and time of placement were recorded on the radon flux measurements
data sheets for the set of one hundred measurements.
Prior to placing a canister at each sample location, the retaining ring, screen, and foam pad of each
canister were removed to expose the charcoal support grid. A pre-measured charcoal charge was
selected from a batch, opened and distributed evenly across the support grid. The canister was then
reassembled and placed face down on the surface at each sampling location. Care was exercised not
to push the device into the soil surface. The canister rim was "sealed" to the surface using a berm of
local borrow material.
Ten canisters (blanks) were similarly processed and the canisters were kept inside an airtight plastic
bag during the 24-hour testing period.
5.3 Sample Retrieval
At the end of each of the 24-hour testing periods, the canisters were retrieved, disassembled and each
charcoal sample was individually poured through a funnel into a container. Identification numbers
were transferred to the appropriate container, which was sealed and placed in a box for transport.
Retrieval date and time were recorded on the same data sheets as the sample placement information.
3
The blank samples were similarly processed. During retrieval of the canisters from the Cell 3 beaches
region on June 11, 2013, one canister (D84) was found to have not been properly sealed during
placement; the charcoal from D84 was containerized but that sample was considered void. All of the
charcoal samples from the Cell 3 covered region were successfully retrieved on December 04, 2013
and containerized during the unloading process.
Tellco personnel maintained custody of the samples from collection through analysis.
5.4 Environmental Conditions
A rain gauge and thermometer were placed by Cell 3 to monitor rainfall and air temperatures during
sampling in order to ensure compliance with the regulatory measurement criteria.
In accordance with 40 CFR, Part 61, Appendix B, Method 115:
• Measurements were not initiated within 24 hours of rainfall.
• After the placement of canisters on the Cell 3 covered region on December 03, 2013,
approximately 0.02 inches of rainfall was measured in the onsite rain gauge. The rain
turned to snow towards the end of the brief storm and deposited approximately 1/4-inch of
snow, which melted by mid-day. None of the canisters were surrounded by water and all of
the earthen seals were intact.
• The minimum ambient air temperature during the sampling periods was 32 degrees F on
December 04, 2013. The ground was not frozen; however, some of the water puddles had a
surface ice layer approximately 1/2-inch thick, which melted by mid-day.
6. SAMPLE ANALYSIS
6.1 Apparatus
Apparatus used for the analysis:
• Single- or multi-channel pulse height analysis system, Ludlum Model 2200 with a
Teledyne 3" x 3" sodium iodide, thallium-activated (Nal(Tl)) detector.
• Lead shielded counting well approximately 40 cm deep with 5-cm thick lead walls and a 7-
cm thick base and 5 cm thick top.
• National Institute of Standards and Technology (NIST) traceable aqueous solution radium-
226 absorbed onto 180 grams of activated charcoal.
• Ohaus Model C501 balance with 0.1-gram sensitivity.
6.2 Sample Inspection and Documentation
Once in the laboratory, the integrity of each charcoal container was verified by visual inspection of the
plastic container. Laboratory personnel checked for damaged or unsealed containers and verified that
the data sheet was complete.
4
No damaged or unsealed containers were observed during inspection at the Tellco analytical
laboratory. A total of 199 radon flux samples and ten blank samples were verified as valid.
6.3 Background and Sample Counting
The gamma ray counting system was checked daily, including background and radium-226 source
measurements prior to and after each counting session. Based on calibration statistics, using two
sources with known radium-226 content, background and source control limits were established for
each Ludlum/Teledyne counting system with shielded well (see Appendix A).
Gamma ray counting of exposed charcoal samples included the following steps:
• The length of count time was determined by the activity of the sample being analyzed,
according to a data quality objective of a minimum of 1,000 accrued counts for any given
sample.
• The sample container was centered on the Nal detector and the shielded well door was
closed.
• The sample was counted over a determined count length and then the mid-sample count
time, date, and gross counts were documented on the radon flux measurements data sheet
and used in the calculations.
• The above steps were repeated for each exposed charcoal sample.
• Approximately 10 percent of the containers counted were selected for recounting. These
containers were recounted within a few days following the original count.
7. QUALITY CONTROL (QC) AND DATA VALIDATION
Charcoal flux measurement QC samples included the following intra-laboratory analytical frequency
objectives:
• Blanks, 5 percent, and
• Recounts, 10 percent
All sample data were subjected to validation protocols that included assessments of sensitivity,
precision, accuracy, and completeness. As described below, all Method 115-required data quality
objectives (EPA, 2012) were attained.
7.1 Sensitivity
A total of ten blanks were analyzed by measuring the radon progeny activity in samples subjected to
all aspects of the measurement process, excepting exposure to the source region. These blank sample
measurements comprised approximately five percent of the field measurements. The results of the
blank sample radon flux rates ranged from -0.01 to 0.02 pCi/m2-s, with an average of approximately
0.01 pCi/m2-s. The lower limit of detection (LLD) ranged from approximately 0.03 to 0.05 pCi/m2-s.
5
7.2 Precision
Twenty recount measurements, distributed throughout the sample set, were performed by replicating
analyses of individual field samples (see Appendix B). These recount measurements comprised
approximately 10 percent of the total number of samples analyzed. The precision of all recount
measurements, expressed as relative percent difference (RPD), ranged from less than 0.1 percent to
7.5 percent with an overall average precision of approximately 2.5 percent RPD. This complies with
the precision objective of 10 percent.
7.3 Accuracy
Accuracy of field measurements was assessed daily by counting two laboratory control samples with
known Ra-226 content. Accuracy of these lab control sample measurements, expressed as percent
bias, ranged from approximately -1.5 percent to +1.1 percent. The arithmetic average bias of the lab
control sample measurements was approximately -0.4 percent (see Appendix A). This complies with
the accuracy objective of +/- 10 percent.
7.4 Completeness
A combined total of 199 samples from the Cell 3 Beaches and Covered regions were verified,
representing approximately 99.5 percent completeness, which complies with the completeness
objective of 85 percent.
8. CALCULATIONS
Radon flux rates were calculated for charcoal collection samples using calibration factors derived
from cross-calibration to sources with known total activity with identical geometry as the charcoal
containers. A yield efficiency factor was used to calculate the total activity of the sample charcoal
containers. Individual field sample result values presented were not reduced by the results of the field
blank analyses.
In practice, radon flux rates were calculated by a database computer program. The algorithms utilized
by the data base program were as follows:
Equation 8.1:
pCi Rn-222/nrsec = rrs*A*b*0.5(d/9175)]
where: N = net sample count rate, cpm under 220-662 keV peak
Ts = sample duration, seconds
b = instrument calibration factor, cpm per pCi; values used:
0.1699, for M-01/D-21 and
0.1702, for M-02/D-20
d = decay time, elapsed hours between sample mid-time and count mid-time
A = area of the canister, m2
6
Equation 8.2:
Error, 2cr = 2 x
Gross Sample, cpm Background Sample,cpm
Sample Count,t,min Background Count,t,min
x Sample Concentration Net,cpm
Equation 8.3:
Iin = 2.71+ (4.65 )(Su)
LLU [Ts*A*b*0.5(d/9T75)]
where: 2.71 = constant
4.65 = confidence interval factor
Sb = standard deviation of the background count rate
Ts = sample duration, seconds
b = instrument calibration factor, cpm per pCi; values used:
0.1699, for M-01/D-21 and
0.1702, for M-02/D-20
d = decay time, elapsed hours between sample mid-time and count mid-time
A = area of the canister, m2
9. RESULTS
9.1 Mean Radon Flux
Referencing 40 CFR, Part 61, Subpart W, Appendix B, Method 115 - Monitoring for Radon-222
Emissions, Subsection 2.1.7 - Calculations, "the mean radon flux for each region of the pile and for
the total pile shall be calculated and reported as follows:
(a) The individual radon flux calculations shall be made as provided in Appendix A EPA
86(1). The mean radon flux for each region of the pile shall be calculated by summing all
individual flux measurements for the region and dividing by the total number of flux
measurements for the region.
(b) The mean radon flux for the total uranium mill tailings pile shall be calculated as follows:
Ji Ai + ... hA7 r+1 ... JiAj
Js =
At
Where: Js = Mean flux for the total pile (pCi/m2-s)
Ji = Mean flux measured in region i (pCi/m2-s)
Aj = Area of region i (m2)
At = Total area of the pile (m2)"
40 CFR 61, Subpart W, Appendix B, Method 115, Subsection 2.1.8, Reporting states "The results of
individual flux measurements, the approximate locations on the pile, and the mean radon flux for each
region and the mean radon flux for the total stack [pile] shall be included in the emission test report. Any
condition or unusual event that occurred during the measurements that could significantly affect the results
should be reported."
7
9.2 Site Results
Site Specific Sample Results (reference Appendix C)
(a) The mean radon flux for each region within Cell 3 is as follows:
Cell 3 - Beaches Region = 56.6 pCi/m2-s (based on 17,558 m2 area)
Cell 3 - Covered Region - 4.6 pCi/m2-s (based on 231,175 m2 area)
Note: Reference Appendix C of this report for the entire summary of individual measurement results.
(b) Using the data presented above, the calculated mean radon flux for Cell 3 is, as follows:
Cell 3= 7.1pCi/m2-s
(56.6)(17<558)+(4.6X23L175) =7.1
288,858
As shown above, the arithmetic mean radon flux of the December 2013 samples for Cell 3 at
Energy Fuels White Mesa milling facility is below the NRC and EPA standard of 20 pCi/m2-s.
Local drought conditions, which were especially severe during 2012 and the first half of 2013, are
believed to have resulted in a lowering of the moisture levels in the buried tailings and cover
materials, leading to increased radon flux rates at the site. Subsequently, rain storms in the latter
part of 2013 have likely increased the moisture content in the Cell 3 cover layer, beginning with
some intense storms in September 2013, which produced very heavy rain downpours and flash
flooding at Cell 3, with most of the water running off or pooling on the surface. Since then,
additional storm events have continued to provide water, which is very slowly percolating into the
cover soils and are apparently finally beginning to reduce the radon flux emissions at Cell 3.
Appendix C is a summary of individual measurement results, including blank sample analysis.
Sample locations are depicted on Figure 2, which is included in Appendix D. The map was produced
by Tellco.
8
References
U. S. Environmental Protection Agency, Radon Flux Measurements on Gardinier and Royster
Phosphogypsum Piles Near Tampa and Mulberry, Florida, EPA 520/5-85-029, NTIS #PB86-
161874, January 1986.
U. S. Environmental Protection Agency, Title 40, Code of Federal Regulations, July 2012.
U. S. Nuclear Regulatory Commission, Radiological Effluent and Environmental Monitoring at
Uranium Mills, Regulatory Guide 4.14, April 1980.
U. S. Nuclear Regulatory Commission, Title 10, Code of Federal Regulations, Part 40, Appendix A,
January 2013.
9
Figure 1
Large Area Activated Charcoal Canisters Diagram
1/4 in. Vent Hole (-in Tn>r*
Scrufc&ei Pad
i/2-ir. Thick
i-futaoi Pan
it
I -2-ni Tin.;< CldTCUw
\
l O-i.1 p. a
PvC End Cap
FISi&f 1 Large-Area Ratfon Collector
10
Appendix A
Charcoal Canister Analyses Support Documents
A
ACCURACY APPRAISAL TABLE
JUNE 2013 SAMPLING
ENERGY FUELS RESOURCES (USA) INC.
WHITE MESA MILL, BLANDING, UTAH
2013 NESHAPs RADON FLUX MEASUREMENTS
CELL 3
SAMPLING DATES: 6/10/13-6/12/13
SYSTEM
I.D.
DATE Bkg Counts (1 min. each)
#1 #2 #3
Source Counts (1 min. each)
#1 #2 #3
AVG NET
cPm
YIELD
cpm/pCi
FOUND
pCi
SOURCE
ID
KNOWN
pCi
M-01/D-21 6/14/2013 133 124 97 10164 9958 10239 10002 0.1699 58872 GS-04 59300
M-01/D-21 6/14/2013 140 142 124 10352 10271 10080 10099 0.1699 59441 GS-04 59300
M-01/D-21 6/15/2013 141 130 139 10420 10274 10286 10190 0.1699 59976 GS-04 59300
M-01/D-21 6/15/2013 134 133 122 10311 10356 10227 10168 0.1699 59849 GS-04 59300
M-01/D-21 6/14/2013 133 124 97 10198 10137 10259 10080 0.1699 59329 GS-05 59300
M-01/D-21 6/14/2013 140 142 124 10152 10100 10344 10063 0.1699 59231 GS-05 59300
M-01/D-21 6/15/2013 141 130 139 10242 10021 10261 10038 0.1699 59082 GS-05 59300
M-01/D-21 6/15/2013 134 133 122 10153 10121 10317 10067 0.1699 59254 GS-05 59300
M-02/D-20 6/14/2013 113 114 106 10382 10435 10116 10200 0.1702 59929 GS-04 59300
M-02/D-20 6/14/2013 118 120 126 10209 10307 10227 10126 0.1702 59497 GS-04 59300
M-02/D-20 6/15/2013 127 129 121 10254 10282 10154 10104 0.1702 59367 GS-04 59300
M-02/D-20 6/15/2013 108 123 117 10267 10321 10214 10151 0.1702 59644 GS-04 59300
1-02/D-20 6/14/2013 113 114 106 10237 10123 10167 10065 0.1702 59134 GS-05 59300
M-02/D-20 6/14/2013 118 120 126 10333 10119 10100 10063 0.1702 59123 GS-05 59300
M-02/D-20 6/15/2013 127 129 121 10034 10305 10243 10068 0.1702 59156 GS-05 59300
M-02/D-20 6/15/2013 108 123 117 10312 10098 10177 10080 0.1702 59222 GS-05 59300
AVERAGE PERCENT BIAS FOR ALL ANALYTICAL SESSIONS: 0.1%
ACCURACY APPRAISAL TABLE
DECEMBER 2013 SAMPLING
ENERGY FUELS RESOURCES
WHITE MESA MILL, BLANDING, UTAH
2013 NESHAPs RADON FLUX MEASUREMENTS
CELL 3
SAMPLING DATES: 12/03/13-12/04/13
SYSTEM
I.D.
DATE Bkg Counts (1
#1
min. each)
#2 #3
Source Counts (1 min. each)
#1 #2 #3
AVG NET
cpm
YIELD
cpm/pCi
FOUND
pCi
SOURCE
ID
KNOWN
pCi
M-01/D-21 12/5/2013 141 142 125 10158 10117 10228 10032 0.1699 59045 GS-04 59300
M-01/D-21 12/5/2013 128 131 121 10151 9983 10161 9972 0.1699 58691 GS-04 59300
M-01/D-21 12/6/2013 129 116 113 9982 10290 9923 9946 0.1699 58538 GS-04 59300
M-01/D-21 12/6/2013 143 120 140 10050 10187 10037 9957 0.1699 58605 GS-04 59300
M-01/D-21 12/5/2013 141 142 125 10196 10101 10325 10071 0.1699 59278 GS-05 59300
M-01/D-21 12/5/2013 128 131 121 10340 10182 10069 10070 0.1699 59272 GS-05 59300
M-01/D-21 12/6/2013 129 116 113 10040 10127 10047 9952 0.1699 58576 GS-05 59300
M-01/D-21 12/6/2013 143 120 140 10063 10042 10154 9952 0.1699 58576 GS-05 59300
M-02/D-20 12/5/2013 116 108 114 10106 10104 10223 10032 0.1702 58940 GS-04 59300
-02/D-20 12/5/2013 129 139 138 10036 10204 10132 9989 0.1702 58688 GS-04 59300
M-02/D-20 12/6/2013 131 119 108 10066 9996 10122 9942 0.1702 58414 GS-04 59300
M-02/D-20 12/6/2013 125 145 126 9985 10234 10114 9979 0.1702 58631 GS-04 59300
M-02/D-20 12/5/2013 116 108 114 10071 10160 10051 9981 0.1702 58645 GS-05 59300
M-02/D-20 12/5/2013 129 139 138 10025 10054 10172 9948 0.1702 58451 GS-05 59300
M-02/D-20 12/6/2013 131 119 108 10167 10117 9996 9974 0.1702 58602 GS-05 59300
M-02/D-20 12/6/2013 125 145 126 10224 10248 10110 10062 0.1702 59119 GS-05 59300
AVERAGE PERCENT BIAS FOR ALL ANALYTICAL SESSIONS: -0.9%
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: VJT\V^^ fA §&\ V\ \\\ J5 \ 0\ A & ^ }lA \
CLIENT:_
System ID:
Scaler S/N:
Calibration Check Log
Calibration Date: / ^ / / 3 Due Pate: fr/t 4 j l4
Detector S/N: D ^iS 33
Blank Canister Bkgd. Range, cpm: 2 a
Gross Source Range, cpm: 2 O
High Voltage: 1 O *XS" Window: 4.42 Thrshld: 120
Source ID/SN: ftc^^/frS - P 4 Source Activity: S^-BKpi^
gfr to L53 3<T» to in 1
to <o5~4~7 3q~ ^64^ _to_L£7_z8
Technician;
All counts times are one minute.
Date By Background Counts (1 min. each)
Avg.
Source Counts (1 min. each)
#1 #3 Average
ok?
Y/N
1 4^ 52. 10 Q8Q
US^BMS^J *H-I )3o C?'2r 10120-
133 103U |Q3S^
Y/N: Y » average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: \Aj W\ \* ^A,e^ H'\U jB i<\V\& \ } M, I
CLIENT. | V=u,^\s ^-eso^r^5
Calibration Check Log
System ID: Calibration Date: W / / n / ' ^ Due Date:
Scaler S/N: _ High Voltage: | P2b Window: 4.42 Thrshld: 2.20 _
Detector S/N: OH'b 33 Source ID/SN: "OQoaree Activity: S^3t<^ Ci.
Blank Canister Bkgd. Range, cpm: 2a- 8 (P to | ^ 3o = ^ ^ io f "7 /
^8^5" to /c?5)0 i^^^O to /^67f Gross Source Range, cpm: 2a
Technician:
All counts times are one minute.
pre
? rd
Date By Background Counts (1 min. each)
#1 #2 #3
Source Counts (1 min. each)
#1 #2 #3
ok?
Y/N
n=t± JJ8_ IQ2^°) Of) 6 I 147. \CMoo tQ3H4
i33 _L2
13,
l?T7 t (93.4 2. (OQ 2-1
yoi^\ ran?
Y/N: Y = average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
Thc acceptable ranges were determined from prior background and source cheek data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: ViV\\^ R dt>C\ P<\\\ ) BJ^lj^L^ } M 1
CLIENT: Ev\-e/~jy Fuel<S V^v. £t?l?vA.<T£-€- 5
Calibration Check Log
System ID: M"0^-/D'2Q _ Calibration Date: U / I ^ J R Due Date: ^/l^/l^
5"l S <g> 3 High Voltage: i C? 2_S~ Window: 4.42 Ttirshld: 2.20 Scaler S/N: _
Detector S/N: ^4 1 S 3 2_ _ Source ID/SN: _
7 6 '5") 3 a Blank Canister Bkgd. Range, cpm: 2 a =
Gross Source Range, cpm: 20= °l^5°) to / OS^ZLl 3 a = 98 < 7
<3-S 'C^ource Activity: ^-3f<|>
£_q to > 7c?
io
Technician:
All counts times are one minute.
Pre
Date Bv Background Counts (1 min. each)
#1 #3 Avg.
Source Counts (1 min. each)
#1 3-> #3 Average
ok?
Y/N
32 111 iOH Co
*4 I O307 \Q~2S2T) X
Jll \o~2-S 1 ggg7 JL^3 1 Q i ( LP 103^1
Y/N: Y • average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
SITE
CHARCOAL CANISTER ANALYSIS SYSTEM
LOCATION: W W\ 4-d |^ ^(\ \\< \\ } B )<H A(j C 1 ^ (A 1
CLIENT: S5-\A£^y pU^U ^ ££t?U/M^S
Calibration Check Log
^QX/P-ZO Calibration Date: & / \ H / i3 Due Date: fr/H /1 «f
Sl^U3 High Voltage: I O^.^ Window: 4,42 Thrshld: 2.20
Detector S/N: Q ^I S~ 3 "X Source ID/SN: ^C^/£rS"Q$ Source Activity: "5^3 KpG
"7 8 to i g 1 3 a - 6 ° to HO
101^3 3o= ^GS3 to I
System ID:
Scaler S/N:
Blank Canister Bkgd. Range, cpm: 2 a == _
2a = Gross Source Range, cpm:
Technician: ^TX^/y
All counts times are one minute.
Date
ggga gag*.
By Background Counts (1 min each)
Tts
1^-7
joii
#2
1^3
Avg.
J_li__
Source Counts (I min. each)
#1 #2
CO 33 ~?
tO O 3 ^
IP3»"2^
j03OS\
S i7 7
Average
i
ok?
Y/N
Y/N: Y • average background and source cpm falls within the control limits.
N = average background and source cpm does nol fall within the control limits.
The acceptable ranges were determined from prior background and source check data,
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: vJVu-W Mill lAm^2% jVCT
CLIENT:
Calibration Check Log
System ID: NHg X/'P^O Calibration Date: fr//*//'? Due Date: bfl$f iCf
Scaler S/N: g~t^(f 3 High Voltage: / 0 1 S Window: 4.42 Thrshld: 2.20
Detector S/N: €> Hi 5 3^-. Source TD/SN; f^^/S6 ~ Pg^Source Activity: ^.^^C
Blank Canister Bkgd. Range, cpm: 2 o = to j 3o= ^ to t "7 0
Gross Source Range, cpm: 2c = to to
Technician: ^ cCp^^
All counts times are one minute.
Date By Background Counts (1 min. each)
#1 #2 #3 Avg. #1
Source Counts (1 min. each)
#2 #3 Average
ok?
Y/N
(06 ii JJ3_ £551 LLgj
^85"
IO/PU
toi j H
JOjj44_
LOJ I >
Y/N: Y » average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: \k\ Mjij^ ^ Lcwd^^ ,
CLIENT: [^6^^ ^s^O^^C^S CH^AT)
Calibration Check Log
System ID: ^~a^/'b Calibration Date: ft//1/ //^ Due Date: <f/ l*f/tf
Scaler S/N: S f Sj/ 3 High Voltage: / 0^7 S Window: 4.42 Thrshld: 2.20
Detector S/N: ^ &3*2- Source ID/SN: 9^^/lSource Activity: KpcV.
Blank Canister Bkgd. Range, cpm: 2o= & to 3 0 = & O to
Gross Source Range, cpm:
Technician: jj^; ^j^^
All counts times are one minute.
Date
i
By Background Counts (1 min. each)
#1 #2 #3 Avg. #1
Source Counts (1 min. each)
#2 #3 Average
ok?
Y/N
(OB TT^T IL 1 )X°) \3<^ 5 j 0lg7
|0o6
(3 1 113. ic?8 113.
L4ST XXT2M& IOJJLQ
Y/N: Y = average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: W jujU- He5l My^ "$U^ck^ ,
CLIENT: "E^-fr^y F^t-^S ^ g gg vUfiC^S
Calibration Check Log
System ID: tW-^l/p-^ I Calibration Date: fe/W/'I? Due Date: & / / j */
Scaler S/N: S7gL. High Voltage: t^^S Window: 4.42 Thrshld: 2.20
Detector S/N: O *4 l5 33 Source ID/SN: ^g^jj2>S" Source Activity: ^jj ^frC-/
Blank Canister Bkgd. Range, cpm: 2 a = _ to ISS 3C= 6°) to JU
Gross Source Range, cpm: 2o= ^6^3 t0 tc?54-7 3q= q^qz. t0<07^g>
Technician:
All counts times are one minute.
Date By Background Counts (1 min each)
#1 #2 #3 Avg. #1
Source Counts (1 min. each)
#2 #3 Average
ok?
Y/N
j_2V_ toi n
twos/ a 13/
Ttv7
Oil
tv*>
£i0
u£3
to I ^7 1QQ37
1 QO^
Y/N: Y - average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
CHARCOAL CANISTER ANALYSIS SYSTEM
SITE LOCATION: vJ hjjhg N\,«fcSfri jjfjjj B/>t*7 csti^ j M
CLIENT: £»V^ ^ FutU ^<?£gt>U^
Calibrarion Check Log
Calibration Date: System ID:
Scaler S/N: fTl B ~V2-Thrshld: 2.20
Detector S/N: 0^1^ 33
Blank Canister Bkgd. Range, cpm: 2 o = _
Gross Source Range, cpm:
Due Date:
High Voltage: _ Window: 4.42
Source ID/SN: Source Activity:
to tSHr 3q= 6°) to \1\
2G= to tociu 3G= 974Q to (DjgU
Technician:
All counts times are one minute.
Date
Pre
Pre
By Background Counts (1 min. each)
#1 #2 #3 Avg. #1
Source Counts (1 min. each)
#2 #3 Average
ok?
Y/N
VUti&c- f IT" 3^ LOIS I D32^ 0207 21 \ 0340 10)*) "7 2 ilk ii 1Q04O
143 ±34 100 U3
Y/N: Y = average background and source cpm falls within the control limits.
N = average background and source cpm does not fall within the control limits.
The acceptable ranges were determined from prior background and source check data.
BALANCE OPERATION DAILY CHECK
Balance Model:
Standard Weight (g): "Z OO* O
Date Pre-check (g) Post-check (g) O.K. ± 0.1 % ? By
t z
BALANCE OPERATION DAILY CHECK
Balance Model: OjMvUS fe> ^4 'O rtJWn gjj. 1^3^ 7
Standard Weight (g): *2-0O»O
Date Pre-check (g)
-2.00,0
Post-check (g)
-2-OOrO
O.K. ± 0.1 % ?
S
By
Appendix B
Recount Data Analyses
B
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO: 13004.00
PILE: 3 BATCH: D SURFACE: TAILINGS
AREA: BEACH DEPLOYED: 6 10 13 RETRIEVED: 6
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
AIR TEMP MIN: 54°F
11 13 CHARCOALBKG:
DATA ENTRY BY: DLC
WEATHER: NO RAIN
156 cpm Wt. Out: 180.0 g.
TARE WEIGHT: 29.2 g.
LOCATION
DIO
RECOUNT
SAMPLE
I. D.
DIO
DIO
RETRIV ANALYSIS MID-TIME CNT GROSS
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS
8 10
10
8 21
21
14 13
15 13
15 36
28
GROSS RADON ± LLD PRECISION
WT IN pCi/m2s pCi/m2s pCi/m2s % RPD
36731
33347
214 . 6
214 .6
93 . 6
96 .4
9.4
9.6
0 . 05
0 . 05 3 . 0%
D2 0
RECOUNT
D2 0
D2 0
22
22
25
25
14 13
15 13
15 43
28
15886
14446
214 . 9
214 . 9
40 . 5
41. 7
4 . 0
4 .2
0 . 05
0 . 05 3 .1!
D3 0
RECOUNT
D30
D3 0
34
34
34
34
14 13
15 13
15 51
30
3185
2952
229 . 5
229 . 5
7.8
8.2
0.8
0.8
0 . 05
0 . 05 4 . 6%
D40
RECOUNT
D4 0
D40
46
46
38 6 14 13 16 1 1 23613 215.9 60
38 6 15 13 8 30 1 21195 215.9 61
6 .1
6 .2
0 . 05
0 . 05 1 .6!
D50
RECOUNT
D50
D50
57
57
42
42
14 13
15 13
16
31
14425
12790
214 . 5
214 . 5
37.2
37 . 2
3.7 0.05
3.7 0.05 0.2!
D60
RECOUNT
D60
D60
10
10
19 6 14 13 16 15 1 1409 217.6 3.2
19 6 15 13 8 31 1 1184 217.6 3.0
0.3
0.3
0 . 05
0 . 05 7 . 5!
D70
RECOUNT
D70
D70
23
23
24
24
14 13
15 13
16
8
22
33
28518
25785
217 . 1
217 .1
73 .4
75 . 0
7.3
7.5
0 . 05
0 . 05 2 .1!
D80
RECOUNT
D80
D80
35
35
32 6 14 13 16 30 1 9755 218.4 24.9
32 6 15 13 8 33 1 8590 218.4 24.7
2.5
2.5
0 . 05
0 . 05 0 . 8!
D90
RECOUNT
D90
D90
45
45
37
37
14 13
15 13
16
8
39
34
10456
9620
217 . 0
217 . 0
26
27
2 . 7
2 . 8
0 . 05
0 . 05 3 . 6!
DlOO
RECOUNT
DlOO
DlOO
55
55
41
41
14
15
13
13
16 52
34
46892
41638
215 . 8
215 . 8
122 . 3
122 . 2
12 .2
12 .2
0 . 05
0 . 05 0 .1'
AVERAGE PERCENT PRECISION FOR THE CELL 3 BEACH REGION: 2 . 6!
Page 1 of 1
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.09
PILE: 3 BATCH: Q SURFACE: SOIL AIR TEMP MIN: 32°F WEATHER: RAINED 0.02 in AFTER PLACEMENT
AREA: COVER DEPLOYED: 12 3 13 RETRIEVED: 12 4 13 CHARCOAL BKG: 149 cpm Wt.Out: 180.0 g.
FIELD TECHNICIANS: CS.DLC, TE COUNTED BY: DLC DATA ENTRY BY: DLC TARE WEIGHT: 29.2 g.
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
RECOUNT CANISTER ANALYSIS:
GRID
LOCATION
RIO
RECOUNT
SAMPLE
RIO
RIO
RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON ± LLD PRECISION
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2s pCi/m2s % RPD
10
10
27
27
10 40
10 40
12 5
12 6
13 18
13 9
17
33
2082
1880
214 . 8
214 . 8
3 .4
3 . 5
0 . 3
0.4
0 . 03
0 . 04 2 . 9;
R2 0
RECOUNT
R2 0
R2 0
10 43
10 43
10
10
43
43
12 5
12 6
13 18
13 9
40
33
1211
1152
218 . 0
218 . 0
0 . 3
0 . 3
0 . 0
0 . 0
0 . 03
0 . 04 0 . 0!
R3 0
RECOUNT
R3 0
R3 0
10 58 10
10 58 10
46
46
12 5
12 6
13 19
13 9
2
37
1047
1765
220 . 6
220 . 6
1 . 6
1 . 5
0.2
0.2
0 . 03
0 . 04 6 .5!
R4 0
RECOUNT
R4 0
R4 0
11
11
18
18
10
10
55
55
12 5
12 6
13 19
13 9
22
37
1003
1776
217
217
1. 6
1. 5
0 .2
0.2
0 . 03
0 . 04 6.5!
R50
RECOUNT
R50
R50
12 19
12 19
12
12
17
17
12
12
13 19
13 9
33
39
1289
1135
230 . 1
230 . 1
2 . 0
2 . 0
0 . 2
0.2
0 . 03
0 . 04 0 . 0!
R6 0
RECOUNT
R60 12 13 12 14 12 5 13 19 50 1 4100 222.5 7.1
R60 12 13 12 14 12 6 13 9 39 1 3775 222.5 7.2
0 . 7
0 . 7
0 . 03
0 . 04 1.4s
R70
RECOUNT
R70
R70
12 36
12 36
12
12
25
25
12 5
12 6
13 19
13 9
57
41
3718
3577
219 . 1
219 . 1 6 . 0%
R80
RECOUNT
R80
R8 0
12
12
38
38
12
12
27
27
12 5
12 6
13 20
13 9
12
41
2248
2065
221 . 6
221 . 6
0.4
0.4
0 . 03
0 . 04 0 . 0;
R90
RECOUNT
R90
R90
12 59
12 59
12
12
42
42
12 5
12 6
13 20
13 9
21
43
5375
4924
222 . 2
222 .2
9 . 5
9 . 6
1 . 0
1 . 0
0 . 03
0 . 04 1. 0!
R100
RECOUNT
R100
R100
12 52
12 52
12 43
12 43
12 5
12 6
13
13
20 37
44
1055
1898
217
217
1.6
1 . 6
0 . 03
0 . 04 0 . 0;
AVERAGE PERCENT PRECISION FOR THE CELL 2 COVER REGION: 2 .4%
Page 1 of 1
Appendix C
Radon Flux Sample Laboratory Data (including Blanks)
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.00
PILE: 3 BATCH: D SURFACE: TAILINGS AIR TEMP MIN: 54°F
AREA: BEACH DEPLOYED: 6 10 13 RETRIEVED: 6 11 13 CHARCOAL BKG:
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC DATA ENTRY BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
WEATHER: NO RAIN
156 cpm Wt. Out: 180.0 g.
TARE WEIGHT: 29.2 g.
GRID
LOCATION
DOl
D02
D03
D04
D05
D06
D07
D08
D09
DIO
Dil
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D2 7
D28
D29
D3 0
D31
D32
D33
D34
D35
D3 6
D37
SAMPLE
DOl
D02
D03
D04
D05
D06
D07
D08
D09
Dil
D12
D13
D14
D15
D16
D17
D18
D19
D2 0
D21
D23
D24
D25
D26
D27
D28
D29
D3 0
D31
D32
D33
D34
D35
D3 6
D37
DEPLOY RETRIV ANALYSIS MID-TIME CNT GROSS
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS
GROSS RADON
WT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS
9
10
11
12
13
15
16
17
18
19
20
22
23
24
26
27
28
29
30
32
33
34
35
36
37
39
40
41
42
18
18
19
19
19
20
20
21
21
21
22
22
23
23
23
24
24
25
25
25
26
26
27
27
27
33
33
33
34
34
35
35
35
36
36
37
37
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
13 15
13 15
13
13
13
15
15
15
30
30
31
31
33
33
34
34
36
36
37
37
39
39
40
40
42
42
43
43
45
45
47
47
48
48
50
50
51
51
54
54
56
56
57
57
59
25666
17048
15001
21067
19830
15664
27469
29917
30797
36731
44260
38931
24099
24057
27440
28177
40206
11191
20341
15886
19281
45745
44487
35694
27180
34287
16258
15341
8295
3185
1488
1819
3621
9812
6877
30886
29551
214
219
215
213
219
210 . 0
222 . 5
215 . 0
216
214
214
215
214
216
215
218
213 . 8
210 .4
213 . 0
214 . 9
213 . 8
213 . 0
216 . 7
213 . 5
202 . 6
219 . 2
215 . 9
216 . 0
220 . 5
229
237
221
219
215 . 8
216 . 6
217 . 1
218 . 5
65 .1
43 . 0
37 . 9
53 . 3
50
39
69
76 . 0
78 . 5
93 . 6
113 . 0
99
61
61
70
71 . 9
103 . 0
28 ,
51
40
49
117
114
91
69 . 8
87 . 7
41 . 5
39 .1
21. 0
7 . 8
1
1
9
24
17
79
76
6 ,
4 .
3 .
5 ,
5 .
4 .
7.
7.
7 ,
9 .
11 ,
9 .
6 .
6 ,
7 .
7
10
2
5
4
4
11
11
9
5
3
8
3
0
0
0
6
8
4
3
9
1
1
0
2
3
8
2
0
9
7
4
2
7 . 0
8 . 8
4 . 1
3 . 9
2 . 1
0.8
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
Page 1 of 3
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO: 13004.00
PILE: 3 BATCH: D SURFACE: TAILINGS AIR TEMP MIN: 54°F
AREA: BEACH DEPLOYED: 6 10 13 RETRIEVED: 6 11 13 CHARCOAL BKG:
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC DATA ENTRY BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
WEATHER: NO RAIN
156 cpm Wt. Out: 180.0 g.
TARE WEIGHT: 29.2 g.
LOCATION
D3 8
D3 9
D40
D41
D42
D43
D44
D4 5
D4 6
D47
D4 8
D4 9
D50
D51
D52
D53
D54
D55
D56
D57
D58
D59
D60
D61
D62
D63
D64
D65
D66
D67
D68
D69
D70
D71
D72
D73
D74
SAMPLE
I. D.
D3 8
D3 9
D4 0
D41
D42
D43
D44
D4 5
D46
D47
D48
D4 9
D50
D51
D52
D53
D54
D55
D56
D57
D58
D59
D60
D61
D62
D63
D64
D65
D66
D67
D68
D69
D70
D71
D72
D73
D74
DEPLOY RETRIV ANALYSIS MID-TIME GROSS GROSS RADON
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2 s pCi/m2 s COMMENTS
8 43
44
46
47
48
49
50
51
53
54
55
56
57
0
1
2
3
4
5
6
7
9
10
11
12
14
15
17
18
19
20
22
23
24
25
26
28
8 37
38
38
39
39
39
40
40
41
41
41
42
42
16
16
16
17
17
18
18
19
19
19
20
20
21
21
22
22
22
23
23
24
24
25
25
25
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
15
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
59
1
1
2
2
4
4
5
5
6
6
9
11
11
12
12
14
14
15
15
17
17
18
18
20
20
21
21
22
22
24
24
25
25
25972
34906
23613
20948
55702
61488
36252
10080
44216
33799
31944
11929
14425
21918
11143
112937
11280
14006
26934
23101
14279
17652
1409
2579
16460
15796
15549
30898
5479
18143
24530
31227
28518
16019
21860
2147
16838
216 . 0
216 .4
215
215
219
216
219 .1
221 . 9
216 . 8
221
221
216
214
217
222
221
207
227
220
223
229
220
217
222
215
213
214
216
209
212
216 . 8
215 .4
217
214
217
218
211
66 . 8
90 . 1
60 . 8
54 . 0
144 . 0
159 . 5
93 . 7
25 . 8
114
87
82
30
37
55
28
289
28
35 . 6
68 . 8
59 .1
36
45
3
6
42 . 0
40.4
39.7
79 . 5
13 . 8
46 . 6
63 . 0
80
73
41
56
5
43
6
9
6
5
14
15
9
2
11
3
3
5
2
29
2
3
6
5
3
4
0
0
4
4
4
8
1
4
6
8
7
4
5
0
4
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 .05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
Page 2 of 3
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO: 13004.00
PILE: 3 BATCH: D SURFACE: TAILINGS
AREA: BEACH DEPLOYED: 6 10 13 RETRIEVED: 6
FIELD TECHNICIANS: MC,CS,TE,DLC COUNTED BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
AIR TEMP MIN: 54°F
11 13 CHARCOALBKG:
DATA ENTRY BY: DLC
WEATHER: NO RAIN
156 cpm Wt. Out: 180.0 g.
TARE WEIGHT: 29.2 g.
LOCATION
D75
D76
D77
D78
D79
D8 0
D81
D82
D83
D84
D85
D86
D87
D88
D89
D90
D91
D92
D93
D94
D95
D96
D97
D98
D99
DlOO
SAMPLE
I. D.
D75
D76
D77
D78
D79
D80
D81
D82
D83
D84
D86
D87
D88
D89
D90
D91
D92
D93
D94
D95
D96
D97
D98
D99
DlOO
DEPLOY RETRIV ANALYSIS MID-TIME GROSS GROSS RADON
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS
GRID
LOCATION
D BLANK 1
D BLANK 2
D BLANK 3
D BLANK 4
D BLANK 5
SAMPLE
I. D.
D BLANK 1
D BLANK 2
D BLANK 3
D BLANK 4
D BLANK 5
BLANK CANISTER ANALYSIS:
8
29
30
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53 8
54 8
55 8
AVERAGE
8
26
31
31
32
32
32
33
33
34
34
35
35
35
36
36
37
37
38
38
38
39
39
40
40
41
41
14 13
14 13
14 13
14 13
14
14
14
14
14
14
14
14
13
13
13
13
13
13
13
13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
14 13
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
16
26
26
28
28
30
30
31
31
33
36
36
37
37
39
39
40
40
42
45
48
49
51
51
52
52
6625
5583
25832
42826
18663
9755
27284
26309
35425
19980
29543
22563
23463
31247
10456
9458
1792
1051
1454
1255
1050
3385
11950
21673
46892
215 . 3
217 . 6
214 . 0
216 . 6
214
218
210
216
213
RADON FLUX RATE FOR THE CELL 3 BEACH
220 . 0
214 .7
215 .4
217 . 2
215 . 6
217 . 0
222 . 3
218
215
216
216
221
220
214
216 . 0
215.8
REGION:
16 . 8
14 . 0
66
110
48
24
70
67
91
51
76
58
60 . 7
81 .1
26 . 8
24 .3
3
3
9
9
0
8 . 5
30.8
56 .4
122 .3
1
1
6 .
11.
4 .
2 .
7 .
6.
9 .
5 ,
7.
5 .
6 .
8
2
2
0
0
0
0
0
0
5 . 6
12 .2
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 .05
0 . 05
0 . 05
0 .05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 .05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
56.6 pCi/m2s
0.9 MIN
289.9 MAX
NOT SEALED
RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON + LLD
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS
45
45
45
45
45
8 10
10
10
10
10
14
14
14
14
14
13
13
13
13
13
12
12
12
12
13
46
46
57
57
7
10
10
10
10
10
1642
1521
1605
1641
1586
206 .3
206 . 2
209 . 9
207 . 0
207 . 7
AVERAGE BLANK CANISTER ANALYSIS FOR THE CELL 3 BEACH REGION:
Page 3 of 3
0 . 02
-0 . 01
0 . 01
0 . 02
0 . 01
0 . 01
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
pCi/m2 s
0 . 05
0 . 05
0 . 05
0 . 05
0 . 05
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.09
PILE: 3 BATCH: Q SURFACE: SOIL AIR TEMP MIN: 32°F
AREA: COVER DEPLOYED: 12 3 13 RETRIEVED: 12 4 13 CHARCOAL BKG:
FIELD TECHNICIANS: CS.DLC, TE COUNTED BY: DLC DATA ENTRY BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
WEATHER: RAINED 0.02 in AFTER PLACEMENT
149 cpm Wt.Out: 180.0 g.
TARE WEIGHT: 29.2 g.
LOCATION
ROl
R02
R03
R04
R05
R06
R07
R08
R09
RIO
Rll
R12
R13
R14
R15
R16
R17
R18
R19
R2 0
R21
R22
R23
R24
R25
R26
R2 7
R2 8
R2 9
R3 0
R31
R32
R33
R34
R3 5
R3 6
R3 7
SAMPLE
ROl
R02
R03
R04
R05
R06
R07
R08
R09
RIO
Rll
R12
R13
R14
R15
R16
R18
R19
R2 0
R21
R22
R23
R24
R2 5
R26
R27
R2 8
R29
R3 0
R31
R32
R3 3
R34
R3 5
R3 6
R3 7
DEPLOY RETRIV ANALYSIS MID-TIME CNT GROSS GROSS RADON ± LLD
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
11
11
11
11
11
11
11
7
9
11
14
16
18
20
23
25
27
29
32
34
36
38
39
40
41
42
43
44
45
46
47
48
50
52
54
56
58
O
2
4
6
8
10
12
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
30
32
33
34
35
36
37
38
39
40
41
42
43
44
38
39
40
41
42
43
44
44
45
46
47
48
49
50
45
46
47
48
49
50
51
51
52
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
18
19
19
19
19
19
19
19
19
19
0
1
4
5
9
9
14
13
19
17
23
25
29
29
32
33
36
37
39
40
43
44
48
47
52
53
56
59
3
2
5
7
12
12
15
16
20
1062
1044
1495
1036
1003
1276
1001
1151
1179
2082
4267
1082
1327
1137
1421
1252
2092
1594
1198
1211
1064
1280
1252
1188
1323
1121
1486
1235
1146
1047
2645
1081
1411
1014
1202
1116
1055
218
217
219
216
218
218
219
218
220
214
217
218
220
224
217
219
217
215
217
218 . 0
220 . 1
222 . 0
218 . 0
222 . 5
218 .8
218 . 4
212
215
219
220
216
221
220
218
220
217
219
0 . 8
0 . 1
0 . 0
0 .1
0 . 0
0 . 0
0 . 0
0 . 0
0 . 1
0 . 0
0 . 0
0 . 1
0 . 0
0.2
0 . 0
0.4
0 . 0
0.2
0 .1
0 . 0
0 .1
0 . 1
0 . 0
0.2
0 . 0
0 . 0
0 .1
0 . 0
0 . 0
0 . 0
0 . 0
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
12
10
Page 1 of 3
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO.: 13004.09
PILE: 3 BATCH: Q SURFACE: SOIL AIR TEMP MIN: 32°F
AREA: COVER DEPLOYED: 12 3 13 RETRIEVED: 12 4 13 CHARCOAL BKG:
FIELD TECHNICIANS: CS.DLC, TE COUNTED BY: DLC DATA ENTRY BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
WEATHER: RAINED 0.02 in AFTER PLACEMENT
149 cpm Wt. Out: 180.0 g.
TARE WEIGHT: 29.2 g.
LOCATION
R3 8
R3 9
R40
R41
R42
R43
R44
R45
R4 6
R4 7
R4 8
R4 9
R50
R51
R52
R53
R54
R55
R56
R57
R58
R59
R60
R61
R62
R63
R64
R65
R66
R67
R68
R69
R70
R71
R72
R73
R74
SAMPLE
R3 8
R3 9
R4 0
R41
R42
R4 3
R44
R4 5
R46
R4 7
R4 8
R4 9
R50
R51
R52
R53
R54
R55
R56
R57
R58
R59
R6 0
R61
R62
R63
R64
R65
R66
R67
R6 8
R6 9
R70
R71
R72
R73
R74
DEPLOY RETRIV ANALYSIS MID-TIME GROSS GROSS RADON
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS:
11
11
11
11
11
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
14
16
18
19
20
5
7
9
11
13
15
17
19
21
23
25
25
23
21
19
17
15
13
11
9
7
5
46
44
42
40
38
36
34
32
30
28
10
10
10
10
10
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
53
54
55
55
55
10
11
12
13
14
15
16
17
18
19
20
20
19
18
17
16
15
14
13
12
11
10
30
29
28
27
26
25
24
23
22
21
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
19
20
20
19
22
22
25
25
27
27
29
29
30
31
33
33
35
36
38
39
41
43
47
46
50
50
51
51
53
53
54
54
56
56
57
57
59
59
1
2
48823
19930
1003
1456
1275
1376
5608
4157
9126
1696
1886
1006
1289
1071
1129
1030
1796
1277
1126
1241
1622
2159
4100
2821
11729
4540
1783
1164
6203
1820
5433
4584
3718
7525
2942
1468
1107
221. 1
222 . 7
217 . 8
217 . 7
219 . 1
234
216
234
229
217
218
233
230
217
226
221
219
217
226
215
220
226
222
226
223 . 0
224 . 1
224 . 0
213
215
225
218
220
219
218
229 . 8
219 . 1
221 . 0
89
36
1
0
0
2
9
7
16
2
1
1
2
0 . 03
0 . 03
1 . 7
0.4
20 . 8
7 . 9
2 . 9
1. 8
11. 0
3 . 0
9.6
8 . 0
6.5
13 .4
5 . 0
1 . 1
0.4
0 . 1
0 . 0
0.2
0 . 0
0 . 0
03
03
0 . 0
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
30 1 S
5 ' W
Page 2 of 3
CLIENT: ENERGY FUELS RESOURCES PROJECT: RADON FLUX MEASUREMENTS, WHITE MESA MILL PROJECT NO: 13004.09
PILE: 3 BATCH: Q SURFACE: SOIL
AREA: COVER DEPLOYED: 12 3 13 RETRIEVED:
FIELD TECHNICIANS: CS.DLC, TE COUNTED BY: DLC
COUNTING SYSTEM I.D.: M01/D21, M02/D20 CAL. DUE: 6/14/14
AIR TEMP MIN: 32°F
12 4 13 CHARCOALBKG:
DATA ENTRY BY: DLC
WEATHER: RAINED 0.02 in AFTER PLACEMENT
149 cpm Wt.Out: 180.0 g.
TARE WEIGHT: 29.2 g.
LOCATION
R75
R76
R77
R78
R79
R8 0
R81
R82
R83
R84
R85
R86
R87
R88
R89
R90
R91
R92
R93
R94
R95
R96
R97
R98
R99
R100
SAMPLE
R75
R76
R77
R78
R79
R80
R81
R82
R83
R84
R85
R86
R87
R88
R8 9
R91
R92
R93
R94
R95
R96
R97
R98
R99
RlOO
DEPLOY RETRIV ANALYSIS
HR MIN HR MIN MO DA YR
MID-TIME CNT GROSS
HR MIN (MIN) COUNTS
GROSS GROSS RADON
IWT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS
LOCATION
R BLANK 1
R BLANK 2
R BLANK 3
R BLANK 4
R BLANK 5
SAMPLE
I. D.
12 28 12
12 30 12
12 32 12
12 34 12
12 36 12
12 38 12
12 40 12
12 42 12
12 44 12
12 46 12
12 49 12
12 51 12
12 53 12
12 55 12
12 57 12
12 59 12
13 1 12
13 3 12
13 5 12
13 4 12
13 2 12
13 0 12
12 58 12
12 56 12
12 54 12
12 52 12
22
23
24
25
26
27
28
29
30
31
37
38
39
40
41
42
43
44
45
46
47
47
46
45
44
43
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
AVERAGE RADON FLUX RATE
5 2
4 1
7 1
9 4
12 1
12 1
14 2
14 2
16 1
16 1
18 1
18 1
19 1
19 1
22 2
21 1
25 3
24 1
29 3
29 3
31 1
31 1
33 1
34 3
38 3
37 1
FOR THE CELL
BLANK CANISTER ANALYSIS:
1847
1003
13427
1100
5017
2248
1929
1144
1668
1714
1156
2233
2354
4082
1510
5375
1088
1401
1452
1263
5862
16392
4171
1357
1377
1055
2 COVER
223 . 9
215 .1
219 . 0
220 . 0
219
221
223
226
218
219
223
222
226
230
222
222
222
235
224 . 0
221 .3
230 .4
201. 6
218 . 5
220 . 0
217 . 9
217 . 7
REGION:
1.4
1. 5
24 . 0
0 . 2
0
1
1
5
4
3
6
5
10 .4
29 . 5
7.3
0 . 5
0.6
1.6
0.1
0.2
2.4
0 . 0
0 . 9
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 .1 03
03
0 . 0
0.2
0 . 1
0 . 0
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
4.6 pCi/m2s
RETRIV ANALYSIS MID-TIME GROSS GROSS
0.1 MIN
89.2 MAX
RADON
HR MIN HR MIN MO DA YR HR MIN (MIN) COUNTS WT IN pCi/m2s pCi/m2s pCi/m2s COMMENTS
R BLANK 1 10 25 11 15 12 5 13 15 23 10 1487 208.8
R BLANK 2 10 25 11 15 12 5 13 15 23 10 1557 208.7
R BLANK 3 10 25 11 15 12 5 13 15 40 10 1488 207.8
R BLANK 4 10 25 11 15 12 5 13 15 40 10 1484 206.6
R BLANK 5 10 25 11 15 12 5 13 15 53 10 1532 210.0
AVERAGE BLANK CANISTER ANALYSIS FOR THE CELL 2 COVER REGION:
Page 3 of 3
0 .00
0 . 01
0 .00
0 . 00
0 . 01
0 . 00
0 . 02
0 . 02
0 . 02
0 . 02
0 . 02
pCi/m2 s
0 . 03
0 . 03
0 . 03
0 . 03
0 . 03
CONTROL
CONTROL
CONTROL
CONTROL
CONTROL
Appendix D
Sample Locations Map (Figure
D
C3
CELL 1
• —•
L_J
3
•Vfl
r FI i
WHITE MESA MILL
BLANDING. UTAH
NESHAPS 2013
JUNE & DECEMBER 2013
RADON FLUX SAMPLING
PREPARED FOR
ENERGYFUELS RESOURCES
ROl O - SAMPLE LOCATION ON COVERED AREAS
SCALE IN FEET
2O0 100 0
nueo ENVIRONMENTAL, LLC
THIS DRAWING ISTHE PROPERTY OF TELLCO ENVIRONMENTAL, LLC, AND IS NOT TO BE REPRODUCED, MODIFIED OR USED FOR ANY OTHER PROJECT OR EXTENSION OF THIS PROJECT EXCEPT BY AGREEMENT WITH TELLCO.