# RAFFINATE CHARACTERIZATION PIÑON RIDGE MILL MONTROSE COUNTY, COLORADO

Energy Fuels Resources Corporation Prepared By: 44 Union Boulevard, Suite 600 Lakewood, Colorado 80228

U.S. Environmental Protection Agency Region 8, Indoor Air Program Prepared For: 1595 Wynkoop Street Mail Code: 8P-AR Denver, Colorado 80202-1129

August 2010

## i 

# TABLE OF CONTENTS Section Page 1.0 INTRODUCTION ................................................................................................... 1 2.0 MILLING PROCESS............................................................................................. 2 3.0 SAMPLE PREPARATION AND ANALYSIS......................................................... 6 4.0 DATA INTERPRETATION .................................................................................... 9 5.0 REFERENCES.................................................................................................... 11



# TABLES Table 1 Ra-226 Raffinate Analytical Summary Table 2 Raffinate Crystal Analytical Summary



# FIGURES Figure 1 Process Flowsheet Figure 2 Vanadium SX Circuit



# APPENDICES Appendix A J.E. Litz & Associates Raffinate Sample Preparation Memo Appendix B Raffinate Analytical Data Report Appendix C Radium Cont ent Calculation Brief

# 1 1.0 INTRODUCTION The Piñon Ridge Mill will extract both uranium and vanadium from ores mined in western Colorado and eastern Utah. The urani um is extracted first followed by the vanadium. Most of the barren wastewater from the vanadi um circuit, commonly referred to as vanadium raffinate or simply raffinate, will be recycled; however, an estimated 30 percent will be disposed of in evaporation po nds. Characterization of the vanadium raffinate at the proposed Piñon Ridge Mill is necessary for engineering purposes and to study the potential environment al and health effects associated with the operation of the evaporation ponds. Among the effects considered is the need to evaluate the potential radon flux from the ponds duri ng milling operations. Energy F uels researched historical data for raffinate at uranium/vanadium mills but was unable to find data from other mills that correlated well with the proposed operations at the Piñon Ridge Mill. As a result, bench-scale testing was initiated to produc e raffinate solution for characterization.
Energy Fuels contracted with J.E. Litz and Associates, LLC (J.E. Litz) to perform benchscale testing of regional Uravan Mineral Belt ores similar to thos e that will be processed at the Piñon Ridge Mill. J.E. Litz origin ally performed ore amenability bench-scale testing for mill design purposes . Regional ore samples from five local uranium mines were used for the bench-scale test. The ore amenability testing produced excess leach filtrate solutions that were used for the ra ffinate sample preparation. The raffinate sample preparation consisted of simu lating the uranium and vanadium solvent extraction circuits. The resulting raffinat e from the bench-scale vanadium solvent extraction circuit was sent to Energy Laborator ies, Inc. for analysis of radium-226. Total dissolved solids and major ions were alsoanalyzed in some of the samples for purposes unrelated to radon flux estimations . In addition, J.E. Litz evaporated a composite raffinate solution sample to produc e a raffinate crystal sample that is representative of the salt crystals that would be created in the evaporation ponds. The raffinate crystal samples were analyzed fo r radium-226, radium-228, thorium-230, throium-232, and lead-210.
Radium-226 activities ranged from 59 to 600 ρ Ci/L in the raffinate samples from the five ores. A composite raffinate sa mple had an activity level of 234 ρ Ci/L. The raffinate crystals contained 7.9 ρ Ci/g of radium-226. This data was provided to SENES Consultants Limited (SENES) for their use in modeling radon flux from the proposed evaporation ponds (SENES 2010).

# 2 2.0 MILLING PROCESS A brief overview of the milling process is provided in this section, as the physical changes and chemicals added during processing ultimately control the radon chemistry of the vanadium raffinate.
The proposed Piñon Ridge Mill is a conventio nal acid-leach operation. The milling process starts with mixing the ore with water and grinding it into a fine-grained slurry (commonly referred to as pulp). The pulp is leached with sulfuric acid, causing the uranium and vanadium to separate from the ro ck particles and enter into solution. The minerals are then recovered from the leach solution using solvent extraction methods and precipitated as uranium oxide (U 3 

# O 8 

# ) concentrate (called yellowcake) and vanadium oxide (V2 

# O 5 

# ) concentrate, respectively. These dr y concentrates are sealed in 55-gallon, steel drums and transported off site for furt her processing by others. The primary milling and process stages include:

• Grinding;

• Pre-leaching and Thickening;

• Leaching;

• Separation and Purification;

• Uranium Recovery; and

• Vanadium Recovery.
Following is a brief description of each prim ary component of the m illing process. The vanadium solvent extraction process is descri bed in more detail because it is the stage in which the raffinate is produced. Figure 1, Process Flowsheet, ill ustrates the milling and process stages.
Grinding Run-of-mine ore is fed into the mill from on-site stockpiles using a front-end loader and/or trucks. The ore is dumped into a f eed hopper and delivered by belt conveyor to a semi-autogenous grinding (SAG) mill. In the SAG mill, t he ore is combined with water and tumbled with steel balls. The tumbling action causes the larger ore pieces and steel balls to grind the ore into fine particles, exposing the uranium and vanadium mineral surfaces in the host rock.

# 3 Pre-leaching and Thickening The resulting pulp from the SAG mill, consis ting of minus 0.03-inch sized particles and water, is distributed to one of two large pul p storage tanks. The pulp is pumped from the storage tanks to two pre-leach tanks where the pulp reacts with pregnant leach solution from the leaching circuit that contai ns excess sulfuric acid. The pulp is then pumped to a thickener tank where the aqueous ov erflow from the thi ckener is clarified and sent to a feed tank for use in the uranium recovery circuit. Th e partially dewatered underflow from the thickener is pumped to the leaching circuit for further extraction of uranium and vanadium.
Leaching The leach circuit consists of eight tanks with agitators. The tanks are arranged in a cascading and staggered configuration so th at individual tanks can be bypassed if necessary. In the leaching circuit, the pulp pumped from the pre-leac h thickener tank is heated with steam and leached with sulfuric ac id to dissolve the uranium and vanadium minerals. Sodium chlorate is added as an oxidant, as necessary, to improve the dissolution process.
Liquid/Solid Separation and Purification The leached pulp is pumped to a series of counter-current decantation (CCD) thickeners, where liquids and solids are separated. The uranium- and vanadiumbearing (or pregnant) solution is separated from the remaining solids, called tailings, which consist of a variety of other minerals that were present in the ore. The pregnant solution is pumped to the pre-leach tanks and subsequently to the uranium recovery feed tank while the tailings are disposed of in the tailings cell.
Uranium Recovery A solvent extraction (SX) process is used toconcentrate and recover the uranium from the pregnant aqueous solution. In the SX process, the aqueous solution is filtered and the uranium extracted and pur ified using a kerosene-based solvent, commonly referred to as the organic solution or simply the “org anic.” Following scrubbing, the uranium is stripped from the organic and concentrated us ing a sodium carbonate solution. The uranium is precipitated from the sodium carbonate solution, partially dewatered, washed, filtered, and then dried in a vacuum dryer. The dried ye llowcake is packed, weighed, and sealed in 55-gallon steel drums for shipment.

# 4 Vanadium Recovery After the uranium has been removed from the aqueous solution in the uranium SX circuit, the vanadium-bearing so lution from that process (a lso known as the uranium raffinate) is pumped to the vanadium SX circ uit for extraction of vanadium. Figure 2 shows the layout of the vanadium SX portion of the mill.

Before the dissolved vanadium can be extract ed from the aqueous solution, it must first be oxidized and re-filtered. The oxidation is performed in a se ries of five agitated tanks where sodium chlorate is added. Ammonia isalso added in these tanks to increase the pH level. After oxidation, the solution is filtered to remove suspended solids and pumped to the vanadium SX feed tank for use in the vanadium SX circuit.
The vanadium SX circuit is very similar to the uranium SX circuit. An organic solution, consisting primarily of keros ene with an amine extractant, is circulated counter-current to the pregnant solution. The organic se lectively removes the vanadium from the aqueous solution and concentrates it by two- tothree-fold in the organic solution. The process starts by pumping the pregnant soluti on from the vanadium SX feed tank to the first of five vanadium mixer-s ettler tanks, and pumping t he barren organic solution to the fifth mixer settler tank. The aqueous solu tion then advances from mixer-settler tanks No. 1 through No. 5 while the organic extracts the vanadium as it advances from mixersettler tanks No. 5 through No. 1. The organic is less dense that the aqueous solution, so it separates from the aqueous solution wit hin the settling portion of each tank and floats on top. The loaded organic is skimmed off the top of mixer-settler tank No. 1 while the aqueous solution, depleted of vanadium , is removed from the base of mixersettler tank No. 5.
The loaded organic is pumped to the loaded organic tank and then to the vanadium scrub and strip circuit. In the vanadium scrub and strip circuit, vanadium is scrubbed in a mixer-settler with an aqueous solution and t hen stripped from the organic carrier in three stripper-mixer-settlers using a caus tic sodium carbonate/sodium hydroxide solution. The vanadium is then precipitated, dewatered, and dried in a kiln. The V2 

# O 5 

# discharging from the kiln is melted in a fu rnace and solidified into a black-flake product, which is packed, weighed and sealed in 55-gallon, steel drums for shipment.
The depleted aqueous solution (i.e. the vanadium raffinate) flows from the mixer-settlers into a raffinate settler for removal of residual organics and then is pumped to the tailings collection box and/or the evaporation ponds . As shown on Figure 2, the aqueous

# 5 solution increases from a pH of 1.1 to a fi nal pH of 4.44 during the vanadium extraction process. This increase in pH plays an important role in determining the final radiochemistry of the raffinate, as radium, like most metals, precipitates out of solution with an increase in pH. Most of these me tal-laden precipitates are removed in the polishing filters and pumped to the tailings cell fo r disposal. The remaining precipitates are either entrained in the organics and remo ved in the scrubbing stage or remain as suspended solids in the raffinate.

# 6 3.0 SAMPLE PREPARATION AND ANALYSIS The ores used in the ore amenability bench-scaletesting included ore samples from the following regional mines:

• Pandora Mine (near La Sal, Utah)

• Packrat Mine (near Gateway, Colorado)

• West Sunday Mine (near Slick Rock, Colorado)

• JD-8 Mine (near Naturita, Colorado)

• Energy Queen Mine (near La Sal, Utah)
The ore samples were sent to Hazen Research, Inc. for crushing, blending, splitting portions for test purposes, and preparing head analytical pulps. Hazen Research then performed analyses of the ore for selected meta ls, ions and minerals. The ore samples were then transferred to J.E. Litz where bench-scale ore amenability testing was performed.
J.E. Litz ground each of the ore samples in an 8-inch batch rod mill. Additional water was added, as necessary, to each pulp sample to approximate the pulp density specified in the mill design. The pulp samples were then continuously agitated and heated to 85o C. During the heating, sulfur ic acid and sodium carbonate were added to achieve free acid content and oxidation poten tial goals. The leach process continued for 24 hours total.
The ore amenability bench-scale testing was used primarily tocollect data for refining the mill design. However, extraction of the uranium and vanadium using an organic solvent allowed for the production and testing of the vanadium raffinate. In the first test, raffinate samples were neutralized to various pH levels and the resulting solutions were analyzed for metal concentrations. The me tal concentrations, especially those for selenium, proved to be elevated above ecologic al screening levels even at a neutral pH. Given these results, Energy Fuels incorporated bird netting into the evaporation pond design to exclude birds and bats from the raffinate solutions.
A second test, which is the subject of this characterization report, was run to test for radionuclides in the raffinate and its precipitates. In this test, excess leach solutions from the ore amenability bench- scale test were used to prepare raffinate samples, which were subsequently submitted to a laboratory for analysis of radium-226 and other analytes. The extractions were done at different pH levels than those specified in the

# 7 mill design because the test could not perfectly replicate all of the steps involved in the uranium and vanadium solvent extraction proce sses. However, the pH of the raffinate was increased to 4.5 after the extractions to approximate the raffi nate pH specified in the mill design (pH = 4.44).
Raffinate Preparation The leach solutions from each ore were filtered and the resulting filtrates were neutralized to a pH of 1.8 wit h hydrated lime. Extraction of the bulk of the uranium was performed by contacting with a solvent c ontaining Alamine-336, decyl alcohol and kerosene. The solvent was subsequently stripped of the uranium with a sodium carbonate solution.
The leach filtrates barren of uranium, i.e. th e uranium raffinates, wereoxidized by heat and sodium chlorate. The vanadium was t hen extracted from each of the uranium raffinates by one to two contacts with the st ripped solvent from the uranium extraction. The solvent solution was subsequently stri pped with a sodium carbonate solution. The vanadium barren solutions, i.e. vanadium raffinates, had a resulting pH of 1.67 to 2.19.
Aliquots of the five vanadium raffinates were taken and composited and a sample was collected for analysis. The remaining vanadiu m raffinates were neutralized to a pH of 4.5, the approximate design pH of the vanadium raffinate, wit h hydrated lime. Aliquots from each of the five pH 4.5 raffinates werecomposited. Samples of pH 4.5 raffinates from each of the five oresand the composited pH 4.5 raffinate were collected for analysis. Aliquots of the remaining pH 4. 5 raffinates were composited and neutralized to a pH of 7.5 with hydrated lime and a sample was collected for analysis. Additional aliquots of the pH 4.5 raffinates were com posited and evaporated to crystals in an oven at 50o C.
The raffinate and crystal samples were packaged and sent in an ice chest to Energy Laboratories Inc. for analysis. Additional sample preparati on details are provided in a June 1, 2010 Memorandum by J.E.Litz, which is included as Appendix A to this report.
Analytical Results Radium-226 is the element of concern for the purposes of es timating radon flux from the raffinates. The radium-226 analytical results for the raffinate samples are summarized in Table 1 and the raffinate crystal analytical results are summarized in Table 2. Total dissolved solids (TDS) and major ions were al so analyzed in several of the raffinate

# 8 samples for other uses. The complete labo ratory report is included as Appendix B to this report.

Table 1 Ra-226 Raffinate Analytical Summary

Sample ID Radium-226 Activity

( ρ Ci/L) Pandora Raffinate – pH 4.5 81 Packrat Raffinate – pH 4.5 59 West Sunday Raffinate – pH 4.5 258 JD-8 Raffinate – pH 4.5 600 Energy Queen Raffinate – pH 4.5 208 Composite Raffinate – pH 2 840 Composite Raffinate – pH 4.5 234 Composite Raffinate – pH 7.5 211

Table 2 Raffinate Crystal Analytical Summary

Parameter Activity ( ρ Ci/g) Radium-226 7.9 Radium-228 0.05 Thorium-230 19 Thorium-232 0.1 Lead-210 3.5

A review of the Energy Laboratories quality c ontrol indicates the instruments appear to be functioning properly because method blan ks, spike, and duplicate concentrations were within the acceptable ra nges per the specified met hods. Where quality control samples were outside of acceptable ranges, t he laboratory provided notes that indicated or resolved the discrepancies. The laboratory QA/QC Summary Repo rt is included in Appendix B with the Laboratory Data Report.

# 9 4.0 DATA INTERPRETATION The radium-226 activities in the pH 4. 5 vanadium raffinates ranged from 59 to 600 ρ Ci/L. The average activity of the five raffinates was 241 ρ Ci/L which is consistent with the composite pH 4.5 raffinate sample at 234 ρ Ci/L. The large variation in activity levels of the individual samples is not attributable tothe ore grade, as the JD-8 raffinate had the highest radium-226 level but the JD-8 ore had the lowest uranium concentration (0.186 percent U 3 

# O 8 

# ) of the five samples tested. Sim ilarly, the Packrat raffinate had the lowest radium-226 level but the Packrat ore had the second highest uranium concentration (0.527 percent U 3 

# O 8 

# ) of the five samples test ed. Upon review of the laboratory QA/QC Summary report, it was discovered that the JD-8 Sample was received at the laboratory with a pH of 2. It appears that t hat sample may inadvertently have not been treated with the hydrated lime during sample preparation.

Uranium and vanadium mills such as the proposed Piñon Ridge Mill typically process ore in batches whereby ore from each separat e source is stockpiled until a sufficient quantity exists to feed the mill for an extended period of time(e.g., 20 days). This is done because each ore is chemically and physically different and requires slightly different reagent application rates, resident times, and other process adjustments to maximize recoveries. Accordin gly, the radium-226 activity level in the evaporation pond water is expected to vary depending on the ore being processed. For purposes of estimating a conservative radon flux ra te, the maximum observed value (600 ρ Ci/L) was used by SENES as the radium activity in their modeling of the evaporation pond raffinate (SENES 2010). As discussed above, the maximum observed activity level was likely due to the depressed pH of the sample; however, it is possibl e that the mill may occasionally run ore from the Chinle Formati on from eastern Utah. The Chinle ore does not contain vanadium and therefore would produce a lower pH ra ffinate similar to that of the JD-8 sample.
The three composite raffinate samples at vari ous pH levels indicate a 70% drop (from 840 ρ Ci/L to 234 ρ Ci/L) in radium-226 activity between pH 2 and pH 4.5 and only a 10% drop between pH 4.5 and pH 7.5. This clearlydemonstrates the influence of pH on the solubility of radium. It al so shows the large effect t hat the vanadium circuit has on lowering radium-226 levels in the evaporat ion pond. Interestingly, the amount of radium-226 in the evaporation pond, assuming an activity level of 234 ρ Ci/L, is only about 10% of the radium-226 found in the su rrounding native soils for an equivalent volume. The calculations demonstrating thisrelationship are provided in Appendix C.

# 10 The raffinate crystal sample had relatively low levels of radionuclides with a radium-226 activity level of only 7.9 ρ Ci/g. By comparison, the tailings are expected to have an average radium-226 level of 647 ρ Ci/g (Golder 2010), almost 100 times greater. As another point of reference, background soil samples collected in the vicinity of the evaporation ponds had a median activity level of about 1 ρ Ci/g but background activity levels as high as 24 ρ Ci/g were recorded in samples co llected in the drainages on the south end of the site. This isnot unexpected or unusual for th is area of the State, as the drainages carry eroded soil and rock from the mineralized Sa lt Wash sandstone exposed on the side of the mesa above. Thisis the same geologic unit that is being mined for the uranium and vanadium (ERG 2009).
Thorium-230, which is in the same decay chain as radium-226, had a slightly higher activity level than radium at 19 ρ Ci/g. If we assume equili brium, these radionuclides would have identical activity levels. A sma ll amount of disequilibri um is, however, not unusual. As a second check, the compos ite pH 4.5 raffinate was converted to an activity in the raffinate solids using the TDS of the raffinate of 15.2 g/L with a result of 15.4 ρ Ci/g (i.e., 234 ρ Ci/L divided by 15.2 g/ L). Although slightly higher, this value is generally consistent with the measured 7.9 ρ Ci/g. The difference is primarily attributable to the inherent i naccuracy in measuring radioacti vity levels. The radium-226 activity level of 7.9 ρ Ci/g was used in the SENES study (SENES 2010), as this was the measured value.

# 11 5.0 REFERENCES Environmental Restoration Group, Inc (ERG ) 2009. Baseline Radiol ogical Investigation Report. Piñon Ridge Uranium Mill. Montro se County, Colorado. October 5. Golder Associates Inc. (Golder) 2010. Uran ium Mill Tailings Radon Flux Calculations, Piñon Ridge Project, August 17.
SENES Consultants Limited (SENES) 2010. Evaporation Pond Radon Flux Analysis. Piñon Ridge Mill Project. MontroseCounty, Colorado. August 4.

# FIGURES
Figure 1 Process Flow Sheet Figure 2 Vanadium SX Circuit

# APPENDIX A
J.E. Litz & Associates Raffinate Sample Preparation Memo

# APPENDIX B Raffinate Analytical Data Reports

# ANALYTICAL SUMMARY REPORT

Sample ID Client Sample ID Collect Date Receive Date Ma trix Test
C10050360-001 Pandora-4.5 pH 1-B 05/10/10 00:00 05/12/10 Aqueous Radium 226, Total C10050360-002 Packrat-4.5 pH 1-C 05/10/10 00:00 05/12/10 Aqueous Same As Above C10050360-003 West Sunday-4.5 pH 1-A 05/10/10 00:00 05/12/10 Aqueous Same As Above
C10050360-004 JD-8-4.5 pH 1D 05/10/10 00:00 05/12/10 Aqueous Metals by ICP/ICPMS, Total Alkalinity Fluoride E300.0 Anions Nitrogen, Nitrite Nitrogen, Nitrate + Nitrite Metals Preparation by EPA 200.2 Radium 226, Total Solids, Total Dissolved C10050360-005 Energy Queen-4.5 pH 1-E 05/10/10 00:00 05/12/10 Aqueous Same As Above
C10050360-006 Composite-Raff 2 05/10/10 00:00 05/12/10 Aqueous Metals by ICP/ICPMS, Total Acidity, Total as CaCO3 Alkalinity Fluoride E300.0 Anions Nitrogen, Nitrite Nitrogen, Nitrate + Nitrite Metals Preparation by EPA 200.2 Radium 226, Total Solids, Total Dissolved C10050360-007 Composite-4.5 pH 3 05/10/10 00:00 05/12/10 Aqueous Metals by ICP/ICPMS, Total Alkalinity Fluoride E300.0 Anions Nitrogen, Nitrite Nitrogen, Nitrate + Nitrite Metals Preparation by EPA 200.2 Radium 226, Total Solids, Total Dissolved C10050360-008 Composite-7.5 pH 4 05/10/10 00:00 05/12/10 Aqueous Same As Above C10050360-009 Raffinate Crystals 5 05/11/10 00:00 05/12/10 Solid Digestion For RadioChemistry Lead 210 Radium 226 Radium 228 Thorium, Isotopic Energy Fuels Resources Corporation

Project Name: Pinon Ridge Mill Workorder No.: C10050360 44 Union Blvd Ste 600 Lakewood, CO 80228 June 16, 2010

Energy Laboratories, Inc. received the following 9 samples for Energy Fuels Resources Corporation on 5/12/2010 for analysis.



## Page 1 of 25

# ANALYTICAL SUMMARY REPORT

This report was prepared by Energy Laboratories, In c., 2393 Salt Creek Hwy., Casper, WY 82601. Any exc eptions or problems with the analyses are noted in the Labo ratory Analytical Report, the QA/QC Summary Report, or the Case Narrative. The results as reported relate only to the item(s) submitted for testing. If you have any questions regarding these test resu lts, please call.

Report Approved By:



## Page 2 of 25

### LABORATORY ANALYTICAL REPORT

Client: Energy Fuels Resources Corporation Project: Pinon Ridge Mill Lab ID: C10050360-001 Client Sample ID: Pandora-4.5 pH 1-B Collection Date: 05/10/10

Matrix: Aqueous Report Date: 06/16/10

DateReceived: 05/12/10

Analyses Result Units Analysis Date / By RL Method

MCL/ QCL Qualifiers


### RADIONUCLIDES - TOTAL 05/24/10 16:11 / jah pCi/L 81 Radium 226 E903.0 05/24/10 16:11 / jah pCi/L 2.8 Radium 226 precision (±) E903.0 05/24/10 16:11 / jah pCi/L 0.44 Radium 226 MDC E903.0 

### RADIONUCLIDES - TOTAL 05/24/10 16:11 / jah pCi/L 81 Radium 226 E903.0 05/24/10 16:11 / jah pCi/L 2.8 Radium 226 precision (±) E903.0 05/24/10 16:11 / jah pCi/L 0.44 Radium 226 MDC E903.0 

### RADIONUCLIDES - TOTAL 05/24/10 16:11 / jah pCi/L 81 Radium 226 E903.0 05/24/10 16:11 / jah pCi/L 2.8 Radium 226 precision (±) E903.0 05/24/10 16:11 / jah pCi/L 0.44 Radium 226 MDC E903.0

Report Definitions: RL - Analyte reporting limit. MCL - Maximum contaminant level.

QCL - Quality control limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration



## Page 3 of 25

### LABORATORY ANALYTICAL REPORT

Client: Energy Fuels Resources Corporation Project: Pinon Ridge Mill Lab ID: C10050360-002 Client Sample ID: Packrat-4.5 pH 1-C Collection Date: 05/10/10

Matrix: Aqueous Report Date: 06/16/10

DateReceived: 05/12/10

Analyses Result Units Analysis Date / By RL Method

MCL/ QCL Qualifiers


### RADIONUCLIDES - TOTAL 05/24/10 16:11 / jah pCi/L 59 Radium 226 E903.0 05/24/10 16:11 / jah pCi/L 2.4 Radium 226 precision (±) E903.0 05/24/10 16:11 / jah pCi/L 0.46 Radium 226 MDC E903.0 

### RADIONUCLIDES - TOTAL 05/24/10 16:11 / jah pCi/L 59 Radium 226 E903.0 05/24/10 16:11 / jah pCi/L 2.4 Radium 226 precision (±) E903.0 05/24/10 16:11 / jah pCi/L 0.46 Radium 226 MDC E903.0 

### RADIONUCLIDES - TOTAL 05/24/10 16:11 / jah pCi/L 59 Radium 226 E903.0 05/24/10 16:11 / jah pCi/L 2.4 Radium 226 precision (±) E903.0 05/24/10 16:11 / jah pCi/L 0.46 Radium 226 MDC E903.0

Report Definitions: RL - Analyte reporting limit. MCL - Maximum contaminant level.

QCL - Quality control limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration



## Page 4 of 25

### LABORATORY ANALYTICAL REPORT

Client: Energy Fuels Resources Corporation Project: Pinon Ridge Mill Lab ID: C10050360-003 Client Sample ID: West Sunday-4.5 pH 1-A Collection Date: 05/10/10

Matrix: Aqueous Report Date: 06/16/10

DateReceived: 05/12/10

Analyses Result Units Analysis Date / By RL Method

MCL/ QCL Qualifiers


### RADIONUCLIDES - TOTAL 05/24/10 16:11 / jah pCi/L 258 Radium 226 E903.0 05/24/10 16:11 / jah pCi/L 5.1 Radium 226 precision (±) E903.0 05/24/10 16:11 / jah pCi/L 0.48 Radium 226 MDC E903.0 

### RADIONUCLIDES - TOTAL 05/24/10 16:11 / jah pCi/L 258 Radium 226 E903.0 05/24/10 16:11 / jah pCi/L 5.1 Radium 226 precision (±) E903.0 05/24/10 16:11 / jah pCi/L 0.48 Radium 226 MDC E903.0 

### RADIONUCLIDES - TOTAL 05/24/10 16:11 / jah pCi/L 258 Radium 226 E903.0 05/24/10 16:11 / jah pCi/L 5.1 Radium 226 precision (±) E903.0 05/24/10 16:11 / jah pCi/L 0.48 Radium 226 MDC E903.0

Report Definitions: RL - Analyte reporting limit. MCL - Maximum contaminant level.

QCL - Quality control limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration



## Page 5 of 25

### LABORATORY ANALYTICAL REPORT

Client: Energy Fuels Resources Corporation Project: Pinon Ridge Mill Lab ID: C10050360-004 Client Sample ID: JD-8-4.5 pH 1D Collection Date: 05/10/10

Matrix: Aqueous Report Date: 06/16/10

DateReceived: 05/12/10

Analyses Result Units Analysis Date / By RL Method

MCL/ QCL Qualifiers


### MAJOR IONS 05/20/10 11:30 / ljl 5 mg/L 5 Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:30 / ljl 5 mg/L 6 Bicarbonate as HCO3 A2320 B 05/17/10 13:54 / cp 1 mg/L 660 Calcium E200.7 05/15/10 12:14 / ljl 1 mg/L 367 Chloride E300.0 05/18/10 14:34 / ljl 0.1 mg/L 0.8 Fluoride A4500-F C 05/17/10 13:54 / cp 1 mg/L 1990 Magnesium E200.7 05/17/10 16:41 / ljl 0.1 mg/L 1.4 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:44 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/17/10 13:54 / cp

0.2 mg/L ND Phosphorus E200.7 05/17/10 13:54 / cp 1 mg/L 348 Potassium E200.7 D 05/17/10 13:54 / cp

3 mg/L 933 Sodium E200.7 D 05/15/10 12:14 / ljl

6 mg/L 10500 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/14/10 14:18 / kre 490 mg/L 14700 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 600 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 3.8 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.17 Radium 226 MDC E903.0 

### MAJOR IONS 05/20/10 11:30 / ljl 5 mg/L 5 Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:30 / ljl 5 mg/L 6 Bicarbonate as HCO3 A2320 B 05/17/10 13:54 / cp 1 mg/L 660 Calcium E200.7 05/15/10 12:14 / ljl 1 mg/L 367 Chloride E300.0 05/18/10 14:34 / ljl 0.1 mg/L 0.8 Fluoride A4500-F C 05/17/10 13:54 / cp 1 mg/L 1990 Magnesium E200.7 05/17/10 16:41 / ljl 0.1 mg/L 1.4 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:44 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/17/10 13:54 / cp

0.2 mg/L ND Phosphorus E200.7 05/17/10 13:54 / cp 1 mg/L 348 Potassium E200.7 D 05/17/10 13:54 / cp

3 mg/L 933 Sodium E200.7 D 05/15/10 12:14 / ljl

6 mg/L 10500 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/14/10 14:18 / kre 490 mg/L 14700 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 600 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 3.8 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.17 Radium 226 MDC E903.0 

### MAJOR IONS 05/20/10 11:30 / ljl 5 mg/L 5 Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:30 / ljl 5 mg/L 6 Bicarbonate as HCO3 A2320 B 05/17/10 13:54 / cp 1 mg/L 660 Calcium E200.7 05/15/10 12:14 / ljl 1 mg/L 367 Chloride E300.0 05/18/10 14:34 / ljl 0.1 mg/L 0.8 Fluoride A4500-F C 05/17/10 13:54 / cp 1 mg/L 1990 Magnesium E200.7 05/17/10 16:41 / ljl 0.1 mg/L 1.4 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:44 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/17/10 13:54 / cp

0.2 mg/L ND Phosphorus E200.7 05/17/10 13:54 / cp 1 mg/L 348 Potassium E200.7 D 05/17/10 13:54 / cp

3 mg/L 933 Sodium E200.7 D 05/15/10 12:14 / ljl

6 mg/L 10500 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/14/10 14:18 / kre 490 mg/L 14700 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 600 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 3.8 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.17 Radium 226 MDC E903.0

Report Definitions: RL - Analyte reporting limit. MCL - Maximum contaminant level.

QCL - Quality control limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration D - RL increa sed due to sample matrix.



## Page 6 of 25

### LABORATORY ANALYTICAL REPORT

Client: Energy Fuels Resources Corporation Project: Pinon Ridge Mill Lab ID: C10050360-005 Client Sample ID: Energy Queen-4.5 pH 1-E Collection Date: 05/10/10

Matrix: Aqueous Report Date: 06/16/10

DateReceived: 05/12/10

Analyses Result Units Analysis Date / By RL Method

MCL/ QCL Qualifiers


### MAJOR IONS 05/20/10 11:32 / ljl 5 mg/L 10 Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:32 / ljl 5 mg/L 12 Bicarbonate as HCO3 A2320 B 05/17/10 14:06 / cp 1 mg/L 743 Calcium E200.7 05/15/10 12:29 / ljl 1 mg/L 471 Chloride E300.0 05/18/10 14:38 / ljl 0.1 mg/L 0.2 Fluoride A4500-F C 05/17/10 14:06 / cp 1 mg/L 1050 Magnesium E200.7 05/17/10 16:43 / ljl 0.1 mg/L 0.6 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:44 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/17/10 14:06 / cp

0.2 mg/L ND Phosphorus E200.7 05/17/10 14:06 / cp 1 mg/L 232 Potassium E200.7 D 05/17/10 14:06 / cp

3 mg/L 787 Sodium E200.7 D 05/15/10 12:29 / ljl

3 mg/L 6680 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/12/10 15:05 / kre 32 mg/L 10400 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 208 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 2.3 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.18 Radium 226 MDC E903.0 

### MAJOR IONS 05/20/10 11:32 / ljl 5 mg/L 10 Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:32 / ljl 5 mg/L 12 Bicarbonate as HCO3 A2320 B 05/17/10 14:06 / cp 1 mg/L 743 Calcium E200.7 05/15/10 12:29 / ljl 1 mg/L 471 Chloride E300.0 05/18/10 14:38 / ljl 0.1 mg/L 0.2 Fluoride A4500-F C 05/17/10 14:06 / cp 1 mg/L 1050 Magnesium E200.7 05/17/10 16:43 / ljl 0.1 mg/L 0.6 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:44 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/17/10 14:06 / cp

0.2 mg/L ND Phosphorus E200.7 05/17/10 14:06 / cp 1 mg/L 232 Potassium E200.7 D 05/17/10 14:06 / cp

3 mg/L 787 Sodium E200.7 D 05/15/10 12:29 / ljl

3 mg/L 6680 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/12/10 15:05 / kre 32 mg/L 10400 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 208 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 2.3 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.18 Radium 226 MDC E903.0 

### MAJOR IONS 05/20/10 11:32 / ljl 5 mg/L 10 Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:32 / ljl 5 mg/L 12 Bicarbonate as HCO3 A2320 B 05/17/10 14:06 / cp 1 mg/L 743 Calcium E200.7 05/15/10 12:29 / ljl 1 mg/L 471 Chloride E300.0 05/18/10 14:38 / ljl 0.1 mg/L 0.2 Fluoride A4500-F C 05/17/10 14:06 / cp 1 mg/L 1050 Magnesium E200.7 05/17/10 16:43 / ljl 0.1 mg/L 0.6 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:44 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/17/10 14:06 / cp

0.2 mg/L ND Phosphorus E200.7 05/17/10 14:06 / cp 1 mg/L 232 Potassium E200.7 D 05/17/10 14:06 / cp

3 mg/L 787 Sodium E200.7 D 05/15/10 12:29 / ljl

3 mg/L 6680 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/12/10 15:05 / kre 32 mg/L 10400 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 208 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 2.3 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.18 Radium 226 MDC E903.0

Report Definitions: RL - Analyte reporting limit. MCL - Maximum contaminant level.

QCL - Quality control limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration D - RL increa sed due to sample matrix.



## Page 7 of 25

### LABORATORY ANALYTICAL REPORT

Client: Energy Fuels Resources Corporation Project: Pinon Ridge Mill Lab ID: C10050360-006 Client Sample ID: Composite-Raff 2 Collection Date: 05/10/10

Matrix: Aqueous Report Date: 06/16/10

DateReceived: 05/12/10

Analyses Result Units Analysis Date / By RL Method

MCL/ QCL Qualifiers


### MAJOR IONS 05/20/10 11:33 / ljl 5 mg/L ND Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:33 / ljl 5 mg/L ND Bicarbonate as HCO3 A2320 B D 05/14/10 18:01 / cp

6 mg/L 568 Calcium E200.7 D 05/15/10 12:45 / ljl

3 mg/L 568 Chloride E300.0 D 05/18/10 14:41 / ljl

0.5 mg/L ND Fluoride A4500-F C D 05/14/10 18:01 / cp

5 mg/L 1520 Magnesium E200.7 D 05/17/10 16:46 / ljl

0.4 mg/L 1.5 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:44 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/14/10 18:01 / cp

0.8 mg/L 37.0 Phosphorus E200.7 D 05/14/10 18:01 / cp

5 mg/L 550 Potassium E200.7 D 05/14/10 18:01 / cp

20 mg/L 1960 Sodium E200.7 D 05/15/10 12:45 / ljl

10 mg/L 31400 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/14/10 14:18 / kre 480 mg/L 39300 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 840 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 3.7 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.11 Radium 226 MDC E903.0 

### MAJOR IONS 05/20/10 11:33 / ljl 5 mg/L ND Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:33 / ljl 5 mg/L ND Bicarbonate as HCO3 A2320 B D 05/14/10 18:01 / cp

6 mg/L 568 Calcium E200.7 D 05/15/10 12:45 / ljl

3 mg/L 568 Chloride E300.0 D 05/18/10 14:41 / ljl

0.5 mg/L ND Fluoride A4500-F C D 05/14/10 18:01 / cp

5 mg/L 1520 Magnesium E200.7 D 05/17/10 16:46 / ljl

0.4 mg/L 1.5 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:44 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/14/10 18:01 / cp

0.8 mg/L 37.0 Phosphorus E200.7 D 05/14/10 18:01 / cp

5 mg/L 550 Potassium E200.7 D 05/14/10 18:01 / cp

20 mg/L 1960 Sodium E200.7 D 05/15/10 12:45 / ljl

10 mg/L 31400 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/14/10 14:18 / kre 480 mg/L 39300 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 840 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 3.7 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.11 Radium 226 MDC E903.0 

### MAJOR IONS 05/20/10 11:33 / ljl 5 mg/L ND Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:33 / ljl 5 mg/L ND Bicarbonate as HCO3 A2320 B D 05/14/10 18:01 / cp

6 mg/L 568 Calcium E200.7 D 05/15/10 12:45 / ljl

3 mg/L 568 Chloride E300.0 D 05/18/10 14:41 / ljl

0.5 mg/L ND Fluoride A4500-F C D 05/14/10 18:01 / cp

5 mg/L 1520 Magnesium E200.7 D 05/17/10 16:46 / ljl

0.4 mg/L 1.5 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:44 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/14/10 18:01 / cp

0.8 mg/L 37.0 Phosphorus E200.7 D 05/14/10 18:01 / cp

5 mg/L 550 Potassium E200.7 D 05/14/10 18:01 / cp

20 mg/L 1960 Sodium E200.7 D 05/15/10 12:45 / ljl

10 mg/L 31400 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/14/10 14:18 / kre 480 mg/L 39300 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 840 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 3.7 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.11 Radium 226 MDC E903.0

Report Definitions: RL - Analyte reporting limit. MCL - Maximum contaminant level.

QCL - Quality control limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration D - RL increa sed due to sample matrix.



## Page 8 of 25

### LABORATORY ANALYTICAL REPORT

Client: Energy Fuels Resources Corporation Project: Pinon Ridge Mill Lab ID: C10050360-007 Client Sample ID: Composite-4.5 pH 3 Collection Date: 05/10/10

Matrix: Aqueous Report Date: 06/16/10

DateReceived: 05/12/10

Analyses Result Units Analysis Date / By RL Method

MCL/ QCL Qualifiers


### MAJOR IONS 05/20/10 11:35 / ljl 5 mg/L 10 Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:35 / ljl 5 mg/L 12 Bicarbonate as HCO3 A2320 B 05/17/10 14:15 / cp 1 mg/L 590 Calcium E200.7 05/15/10 13:00 / ljl 1 mg/L 537 Chloride E300.0 05/18/10 14:49 / ljl 0.1 mg/L 0.6 Fluoride A4500-F C 05/17/10 14:15 / cp 1 mg/L 1340 Magnesium E200.7 05/17/10 16:48 / ljl 0.1 mg/L 0.9 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:45 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/17/10 14:15 / cp

0.2 mg/L ND Phosphorus E200.7 05/17/10 14:15 / cp 1 mg/L 486 Potassium E200.7 D 05/17/10 14:15 / cp

3 mg/L 2010 Sodium E200.7 D 05/15/10 13:00 / ljl

6 mg/L 10700 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/12/10 15:06 / kre 50 mg/L 15200 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 234 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 1.7 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.09 Radium 226 MDC E903.0 

### MAJOR IONS 05/20/10 11:35 / ljl 5 mg/L 10 Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:35 / ljl 5 mg/L 12 Bicarbonate as HCO3 A2320 B 05/17/10 14:15 / cp 1 mg/L 590 Calcium E200.7 05/15/10 13:00 / ljl 1 mg/L 537 Chloride E300.0 05/18/10 14:49 / ljl 0.1 mg/L 0.6 Fluoride A4500-F C 05/17/10 14:15 / cp 1 mg/L 1340 Magnesium E200.7 05/17/10 16:48 / ljl 0.1 mg/L 0.9 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:45 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/17/10 14:15 / cp

0.2 mg/L ND Phosphorus E200.7 05/17/10 14:15 / cp 1 mg/L 486 Potassium E200.7 D 05/17/10 14:15 / cp

3 mg/L 2010 Sodium E200.7 D 05/15/10 13:00 / ljl

6 mg/L 10700 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/12/10 15:06 / kre 50 mg/L 15200 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 234 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 1.7 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.09 Radium 226 MDC E903.0 

### MAJOR IONS 05/20/10 11:35 / ljl 5 mg/L 10 Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:35 / ljl 5 mg/L 12 Bicarbonate as HCO3 A2320 B 05/17/10 14:15 / cp 1 mg/L 590 Calcium E200.7 05/15/10 13:00 / ljl 1 mg/L 537 Chloride E300.0 05/18/10 14:49 / ljl 0.1 mg/L 0.6 Fluoride A4500-F C 05/17/10 14:15 / cp 1 mg/L 1340 Magnesium E200.7 05/17/10 16:48 / ljl 0.1 mg/L 0.9 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:45 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/17/10 14:15 / cp

0.2 mg/L ND Phosphorus E200.7 05/17/10 14:15 / cp 1 mg/L 486 Potassium E200.7 D 05/17/10 14:15 / cp

3 mg/L 2010 Sodium E200.7 D 05/15/10 13:00 / ljl

6 mg/L 10700 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/12/10 15:06 / kre 50 mg/L 15200 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 234 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 1.7 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.09 Radium 226 MDC E903.0

Report Definitions: RL - Analyte reporting limit. MCL - Maximum contaminant level.

QCL - Quality control limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration D - RL increa sed due to sample matrix.



## Page 9 of 25

### LABORATORY ANALYTICAL REPORT

Client: Energy Fuels Resources Corporation Project: Pinon Ridge Mill Lab ID: C10050360-008 Client Sample ID: Composite-7.5 pH 4 Collection Date: 05/10/10

Matrix: Aqueous Report Date: 06/16/10

DateReceived: 05/12/10

Analyses Result Units Analysis Date / By RL Method

MCL/ QCL Qualifiers


### MAJOR IONS 05/20/10 11:43 / ljl 5 mg/L 35 Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:43 / ljl 5 mg/L 43 Bicarbonate as HCO3 A2320 B 05/17/10 14:31 / cp 1 mg/L 766 Calcium E200.7 05/15/10 13:15 / ljl 1 mg/L 536 Chloride E300.0 05/18/10 15:15 / ljl 0.1 mg/L 0.4 Fluoride A4500-F C 05/17/10 14:31 / cp 1 mg/L 1300 Magnesium E200.7 05/17/10 16:51 / ljl 0.1 mg/L 1.4 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:45 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/17/10 14:31 / cp

0.2 mg/L ND Phosphorus E200.7 05/17/10 14:31 / cp 1 mg/L 495 Potassium E200.7 D 05/17/10 14:31 / cp

3 mg/L 2020 Sodium E200.7 D 05/15/10 13:15 / ljl

6 mg/L 10100 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/12/10 15:06 / kre 47 mg/L 16300 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 211 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 1.7 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.09 Radium 226 MDC E903.0 

### MAJOR IONS 05/20/10 11:43 / ljl 5 mg/L 35 Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:43 / ljl 5 mg/L 43 Bicarbonate as HCO3 A2320 B 05/17/10 14:31 / cp 1 mg/L 766 Calcium E200.7 05/15/10 13:15 / ljl 1 mg/L 536 Chloride E300.0 05/18/10 15:15 / ljl 0.1 mg/L 0.4 Fluoride A4500-F C 05/17/10 14:31 / cp 1 mg/L 1300 Magnesium E200.7 05/17/10 16:51 / ljl 0.1 mg/L 1.4 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:45 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/17/10 14:31 / cp

0.2 mg/L ND Phosphorus E200.7 05/17/10 14:31 / cp 1 mg/L 495 Potassium E200.7 D 05/17/10 14:31 / cp

3 mg/L 2020 Sodium E200.7 D 05/15/10 13:15 / ljl

6 mg/L 10100 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/12/10 15:06 / kre 47 mg/L 16300 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 211 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 1.7 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.09 Radium 226 MDC E903.0 

### MAJOR IONS 05/20/10 11:43 / ljl 5 mg/L 35 Alkalinity, Total as CaCO3 A2320 B 05/20/10 11:43 / ljl 5 mg/L 43 Bicarbonate as HCO3 A2320 B 05/17/10 14:31 / cp 1 mg/L 766 Calcium E200.7 05/15/10 13:15 / ljl 1 mg/L 536 Chloride E300.0 05/18/10 15:15 / ljl 0.1 mg/L 0.4 Fluoride A4500-F C 05/17/10 14:31 / cp 1 mg/L 1300 Magnesium E200.7 05/17/10 16:51 / ljl 0.1 mg/L 1.4 Nitrogen, Nitrate+Nitrite as N E353.2 05/12/10 15:45 / ja 0.1 mg/L ND Nitrogen, Nitrite as N A4500-NO2 B D 05/17/10 14:31 / cp

0.2 mg/L ND Phosphorus E200.7 05/17/10 14:31 / cp 1 mg/L 495 Potassium E200.7 D 05/17/10 14:31 / cp

3 mg/L 2020 Sodium E200.7 D 05/15/10 13:15 / ljl

6 mg/L 10100 Sulfate E300.0



### PHYSICAL PROPERTIES D 05/12/10 15:06 / kre 47 mg/L 16300 Solids, Total Dissolved TDS @ 180 C A2540 C



### RADIONUCLIDES - TOTAL 05/24/10 20:54 / trs pCi/L 211 Radium 226 E903.0 05/24/10 20:54 / trs pCi/L 1.7 Radium 226 precision (±) E903.0 05/24/10 20:54 / trs pCi/L 0.09 Radium 226 MDC E903.0

Report Definitions: RL - Analyte reporting limit. MCL - Maximum contaminant level.

QCL - Quality control limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration D - RL increa sed due to sample matrix.



## Page 10 of 25

### LABORATORY ANALYTICAL REPORT

Client: Energy Fuels Resources Corporation Project: Pinon Ridge Mill Lab ID: C10050360-009 Client Sample ID: Raffinate Crystals 5 Collection Date: 05/11/10

Matrix: Solid Report Date: 06/16/10

DateReceived: 05/12/10

Analyses Result Units Analysis Date / By RL Method

MCL/ QCL Qualifiers


### RADIONUCLIDES - TOTAL 05/28/10 20:23 / dm pCi/g-dry 3.5 Lead 210 E909.0M 05/28/10 20:23 / dm pCi/g-dry 1.4 Lead 210 precision (±) E909.0M 05/28/10 20:23 / dm pCi/g-dry 2.3 Lead 210 MDC E909.0M 06/02/10 15:49 / trs pCi/g-dry 7.9 Radium 226 E903.0 06/02/10 15:49 / trs pCi/g-dry 0.3 Radium 226 precision (±) E903.0 06/02/10 15:49 / trs pCi/g-dry 0.06 Radium 226 MDC E903.0 U 05/27/10 16:42 / plj pCi/g-dry 0.05 Radium 228 RA-05 05/27/10 16:42 / plj pCi/g-dry 0.3 Radium 228 precision (±) RA-05 05/27/10 16:42 / plj pCi/g-dry 0.4 Radium 228 MDC RA-05 05/24/10 13:19 / dmf pCi/g-dry 19 Thorium 230 E907.0 05/24/10 13:19 / dmf pCi/g-dry 3.2 Thorium 230 precision (±) E907.0 05/24/10 13:19 / dmf pCi/g-dry 0.1 Thorium 230 MDC E907.0 U 05/24/10 13:19 / dmf pCi/g-dry 0.1 Thorium 232 E907.0 05/24/10 13:19 / dmf pCi/g-dry 0.09 Thorium 232 precision (±) E907.0 05/24/10 13:19 / dmf pCi/g-dry 0.1 Thorium 232 MDC E907.0 

### RADIONUCLIDES - TOTAL 05/28/10 20:23 / dm pCi/g-dry 3.5 Lead 210 E909.0M 05/28/10 20:23 / dm pCi/g-dry 1.4 Lead 210 precision (±) E909.0M 05/28/10 20:23 / dm pCi/g-dry 2.3 Lead 210 MDC E909.0M 06/02/10 15:49 / trs pCi/g-dry 7.9 Radium 226 E903.0 06/02/10 15:49 / trs pCi/g-dry 0.3 Radium 226 precision (±) E903.0 06/02/10 15:49 / trs pCi/g-dry 0.06 Radium 226 MDC E903.0 U 05/27/10 16:42 / plj pCi/g-dry 0.05 Radium 228 RA-05 05/27/10 16:42 / plj pCi/g-dry 0.3 Radium 228 precision (±) RA-05 05/27/10 16:42 / plj pCi/g-dry 0.4 Radium 228 MDC RA-05 05/24/10 13:19 / dmf pCi/g-dry 19 Thorium 230 E907.0 05/24/10 13:19 / dmf pCi/g-dry 3.2 Thorium 230 precision (±) E907.0 05/24/10 13:19 / dmf pCi/g-dry 0.1 Thorium 230 MDC E907.0 U 05/24/10 13:19 / dmf pCi/g-dry 0.1 Thorium 232 E907.0 05/24/10 13:19 / dmf pCi/g-dry 0.09 Thorium 232 precision (±) E907.0 05/24/10 13:19 / dmf pCi/g-dry 0.1 Thorium 232 MDC E907.0 

### RADIONUCLIDES - TOTAL 05/28/10 20:23 / dm pCi/g-dry 3.5 Lead 210 E909.0M 05/28/10 20:23 / dm pCi/g-dry 1.4 Lead 210 precision (±) E909.0M 05/28/10 20:23 / dm pCi/g-dry 2.3 Lead 210 MDC E909.0M 06/02/10 15:49 / trs pCi/g-dry 7.9 Radium 226 E903.0 06/02/10 15:49 / trs pCi/g-dry 0.3 Radium 226 precision (±) E903.0 06/02/10 15:49 / trs pCi/g-dry 0.06 Radium 226 MDC E903.0 U 05/27/10 16:42 / plj pCi/g-dry 0.05 Radium 228 RA-05 05/27/10 16:42 / plj pCi/g-dry 0.3 Radium 228 precision (±) RA-05 05/27/10 16:42 / plj pCi/g-dry 0.4 Radium 228 MDC RA-05 05/24/10 13:19 / dmf pCi/g-dry 19 Thorium 230 E907.0 05/24/10 13:19 / dmf pCi/g-dry 3.2 Thorium 230 precision (±) E907.0 05/24/10 13:19 / dmf pCi/g-dry 0.1 Thorium 230 MDC E907.0 U 05/24/10 13:19 / dmf pCi/g-dry 0.1 Thorium 232 E907.0 05/24/10 13:19 / dmf pCi/g-dry 0.09 Thorium 232 precision (±) E907.0 05/24/10 13:19 / dmf pCi/g-dry 0.1 Thorium 232 MDC E907.0

Report Definitions: RL - Analyte reporting limit. MCL - Maximum contaminant level.

QCL - Quality control limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration U - Not detec ted at minimum detectable concentration



## Page 11 of 25

### Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation Work Order: C10050360 

# QA/QC Summary Report

06/16/10 Report Date:

Analyte Result %REC RPD Low Limit High Limit RPDLimit RL Units Qual Count
Method: A2320 B Batch: 100520_2_ALK-W Sample ID: MBLK 05/20/10 11:11 Method Blank Run: TTR-ALK_100520B 2 Alkalinity, Total as CaCO3 1 1 mg/L Bicarbonate as HCO3 1 1 mg/L Sample ID: LCS1 05/20/10 11:19 Laboratory Control Sample Run: TTR-ALK_100520B Alkalinity, Total as CaCO3 98 90 110 5.0 197 mg/L Sample ID: LCS 05/20/10 11:26 Laboratory Control Sample Run: TTR-ALK_100520B Alkalinity, Total as CaCO3 98 90 110 5.0 50.0 mg/L



### Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration



## Page 12 of 25

### Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation Work Order: C10050360 

# QA/QC Summary Report

06/16/10 Report Date:

Analyte Result %REC RPD Low Limit High Limit RPDLimit RL Units Qual Count
Method: A2540 C Batch: 100512_1_SLDS-TDS-W Sample ID: MBLK1_100512 05/12/10 15:01 Method Blank Run: BAL-1_100512B Solids, Total Dissolved TDS @ 180 C 10 ND mg/L Sample ID: LCS1_100512 05/12/10 15:01 Laboratory Control Sample Run: BAL-1_100512B Solids, Total Dissolved TDS @ 180 C 100 90 110 10 995 mg/L Sample ID: C10050358-002CMS 05/12/10 15:04 Sample Matrix Spike Run: BAL-1_100512B Solids, Total Dissolved TDS @ 180 C 105 90 110 10 3270 mg/L Sample ID: C10050358-002CMSD 05/12/10 15:04 Sample Matrix Spike Duplicate Run: BAL-1_100512B Solids, Total Dissolved TDS @ 180 C 105 90 110 10 10 0.1 3280 mg/L Sample ID: C10050369-004AMS 05/12/10 15:08 Sample Matrix Spike Run: BAL-1_100512B Solids, Total Dissolved TDS @ 180 C 106 90 110 10 5700 mg/L Sample ID: C10050369-004AMSD 05/12/10 15:08 Sample Matrix Spike Duplicate Run: BAL-1_100512B Solids, Total Dissolved TDS @ 180 C 108 90 110 10 10 0.7 5740 mg/L

Method: A2540 C Batch: 100514_2_SLDS-TDS-W Sample ID: MBLK1_100514 05/14/10 14:17 Method Blank Run: BAL-1_100514A Solids, Total Dissolved TDS @ 180 C 10 ND mg/L Sample ID: LCS1_100514 05/14/10 14:17 Laboratory Control Sample Run: BAL-1_100514A Solids, Total Dissolved TDS @ 180 C 98 90 110 10 977 mg/L Sample ID: C10050436-001AMS 05/14/10 14:20 Sample Matrix Spike Run: BAL-1_100514A Solids, Total Dissolved TDS @ 180 C 104 90 110 10 2560 mg/L Sample ID: C10050436-001AMSD 05/14/10 14:21 Sample Matrix Spike Duplicate Run: BAL-1_100514A Solids, Total Dissolved TDS @ 180 C 105 90 110 10 10 1 2580 mg/L



### Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration



## Page 13 of 25

### Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation Work Order: C10050360 

# QA/QC Summary Report

06/16/10 Report Date:

Analyte Result %REC RPD Low Limit High Limit RPDLimit RL Units Qual Count
Method: A4500-F C Batch: R132857 Sample ID: MBLK 05/18/10 11:10 Method Blank Run: MANTECH_100518A Fluoride 0.05 ND mg/L Sample ID: LCS 05/18/10 11:14 Laboratory Control Sample Run: MANTECH_100518A Fluoride 104 90 110 0.10 1.04 mg/L Sample ID: C10050358-001CMS 05/18/10 14:19 Sample Matrix Spike Run: MANTECH_100518A Fluoride 108 80 120 0.10 1.33 mg/L Sample ID: C10050358-001CMSD 05/18/10 14:23 Sample Matrix Spike Duplicate Run: MANTECH_100518A Fluoride 108 80 120 10 0.10 0 1.33 mg/L



### Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration



## Page 14 of 25

### Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation Work Order: C10050360 

# QA/QC Summary Report

06/16/10 Report Date:

Analyte Result %REC RPD Low Limit High Limit RPDLimit RL Units Qual Count
Method: A4500-NO2 B Analytical Run: HACH DR3000_100512B Sample ID: ICV-2 05/12/10 15:43 Initial Calibration Verification Standard Nitrogen, Nitrite as N 99 90 110 0.10 0.990 mg/L
Method: A4500-NO2 B Batch: A2010-05-12_6_NO2_01 Sample ID: MBLK-1 05/12/10 15:43 Method Blank Run: HACH DR3000_100512B Nitrogen, Nitrite as N 0.001 ND mg/L Sample ID: C10050355-001AMS 05/12/10 15:45 Sample Matrix Spike Run: HACH DR3000_100512B Nitrogen, Nitrite as N 95 90 110 0.10 0.0453 mg/L Sample ID: C10050355-001AMSD 05/12/10 15:45 Sample Matrix Spike Duplicate Run: HACH DR3000_10051 2B Nitrogen, Nitrite as N 95 90 110 10 0.10 0.0453 mg/L



### Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration



## Page 15 of 25

### Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation Work Order: C10050360 

# QA/QC Summary Report

06/16/10 Report Date:

Analyte Result %REC RPD Low Limit High Limit RPDLimit RL Units Qual Count
Method: E200.7 Batch: 26100 Sample ID: MB-26100 05/14/10 17:41 Method Blank Run: ICP2-C_100514A 5 Calcium 0.1 ND mg/L Magnesium 0.09 ND mg/L Phosphorus 0.02 ND mg/L Potassium 0.1 ND mg/L Sodium 0.3 ND mg/L Sample ID: LCS3-26100 05/14/10 17:45 Laboratory Control Sample Run: ICP2-C_100514A 5 Calcium 100 85 115 1.0 25.0 mg/L Magnesium 98 85 115 1.0 24.4 mg/L Phosphorus 100 85 115 0.10 5.02 mg/L Potassium 97 85 115 1.0 24.2 mg/L Sodium 99 85 115 1.0 24.7 mg/L Sample ID: C10050216-001BMS3 05/14/10 17:53 Sample Matrix Spike Run: ICP2-C_100514A 5 Calcium 107 70 130 1.0 84.4 mg/L Magnesium 103 70 130 1.0 44.5 mg/L Phosphorus 117 70 130 0.10 22.9 mg/L Potassium 109 70 130 1.0 70.2 mg/L Sodium 70 130 1.0 615 mg/L A Sample ID: C10050216-001BMSD 05/14/10 17:57 Sample Matrix Spike Duplicate Run: ICP2-C_100514A 5 Calcium 118 70 130 20 1.0 3.2 87.1 mg/L Magnesium 105 70 130 20 1.0 1.1 44.9 mg/L Phosphorus 120 70 130 20 0.10 0.7 23.0 mg/L Potassium 100 70 130 20 1.0 3.3 67.9 mg/L Sodium 70 130 20 1.0 0 615 mg/L A



### Qualifiers: RL - Analyte reporting limit. A - The analyte level was greater than four times t he spike level. In accordance with the method % recovery is not calcul ated. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration



## Page 16 of 25

### Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation Work Order: C10050360 

# QA/QC Summary Report

06/16/10 Report Date:

Analyte Result %REC RPD Low Limit High Limit RPDLimit RL Units Qual Count
Method: E200.7 Batch: R132821 Sample ID: MB-100517A 05/17/10 12:43 Method Blank Run: ICP2-C_100517A 5 Calcium 0.2 ND mg/L Magnesium 0.05 ND mg/L Phosphorus 0.03 ND mg/L Potassium 0.02 ND mg/L Sodium 0.3 ND mg/L Sample ID: LFB-100517A 05/17/10 12:48 Laboratory Fortified Blank Run: ICP2-C_100517A 5 Calcium 96 85 115 0.50 48.2 mg/L Magnesium 94 85 115 0.50 46.9 mg/L Phosphorus 95 85 115 0.10 0.953 mg/L Potassium 89 85 115 0.50 44.6 mg/L Sodium 97 85 115 0.50 48.4 mg/L Sample ID: C10050360-004BMS2 05/17/10 13:58 Sample Matrix Spike Run: ICP2-C_100517A 5 Calcium 95 70 130 1.2 1150 mg/L Magnesium 87 70 130 1.0 2430 mg/L Phosphorus 97 70 130 0.16 9.92 mg/L Potassium 78 70 130 1.1 748 mg/L Sodium 94 70 130 3.2 1410 mg/L Sample ID: C10050360-004BMSD 05/17/10 14:02 Sample Matrix Spike Duplicate Run: ICP2-C_100517A 5 Calcium 94 70 130 20 1.2 0.4 1140 mg/L Magnesium 88 70 130 20 1.0 0.2 2440 mg/L Phosphorus 96 70 130 20 0.16 1.1 9.81 mg/L Potassium 80 70 130 20 1.1 1.4 758 mg/L Sodium 96 70 130 20 3.2 0.8 1420 mg/L



### Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration



## Page 17 of 25

### Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation Work Order: C10050360 

# QA/QC Summary Report

06/16/10 Report Date:

Analyte Result %REC RPD Low Limit High Limit RPDLimit RL Units Qual Count
Method: E300.0 Batch: R132791 Sample ID: LCS 05/14/10 16:49 Laboratory Control Sample Run: IC1-C_100514A 2 Chloride 98 90 110 1.0 9.83 mg/L Sulfate 96 90 110 1.0 38.4 mg/L Sample ID: MBLK 05/14/10 17:20 Method Blank Run: IC1-C_100514A 2 Chloride 0.01 0.8 mg/L Sulfate 0.06 ND mg/L Sample ID: C10050358-002CMS 05/15/10 01:18 Sample Matrix Spike Run: IC1-C_100514A 2 Chloride 95 80 120 1.0 207 mg/L Sulfate 104 80 120 1.0 411 mg/L Sample ID: C10050358-002CMSD 05/15/10 01:33 Sample Matrix Spike Duplicate Run: IC1-C_100514A 2 Chloride 91 80 120 20 1.0 1 205 mg/L Sulfate 104 80 120 20 1.0 0.1 410 mg/L



### Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration



## Page 18 of 25

### Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation Work Order: C10050360 

# QA/QC Summary Report

06/16/10 Report Date:

Analyte Result %REC RPD Low Limit High Limit RPDLimit RL Units Qual Count
Method: E353.2 Batch: R132820 Sample ID: MBLK-1 05/17/10 16:16 Method Blank Run: TECHNICON_100517A Nitrogen, Nitrate+Nitrite as N 0.04 ND mg/L Sample ID: LCS-2 05/17/10 16:18 Laboratory Control Sample Run: TECHNICON_100517A Nitrogen, Nitrate+Nitrite as N 99 90 110 0.10 2.48 mg/L Sample ID: C10050356-001BMS 05/17/10 16:33 Sample Matrix Spike Run: TECHNICON_100517A Nitrogen, Nitrate+Nitrite as N 98 90 110 0.10 2.09 mg/L Sample ID: C10050356-001BMSD 05/17/10 16:36 Sample Matrix Spike Duplicate Run: TECHNICON_100517A Nitrogen, Nitrate+Nitrite as N 98 90 110 10 0.10 0.5 2.08 mg/L



### Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration



## Page 19 of 25

### Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation Work Order: C10050360 

# QA/QC Summary Report

06/16/10 Report Date:

Analyte Result %REC RPD Low Limit High Limit RPDLimit RL Units Qual Count
Method: E903.0 Batch: RA226-4529 Sample ID: C10050372-001CMS 05/24/10 16:11 Sample Matrix Spike Run: BERTHOLD 770-1_100514A Radium 226 101 70 130 16 pCi/L Sample ID: C10050372-001CMSD 05/24/10 16:11 Sample Matrix Spike Duplicate Run: BERTHOLD 770-1_10 0514A Radium 226 113 70 130 26.1 11 18 pCi/L Sample ID: MB-RA226-4529 05/24/10 22:06 Method Blank Run: BERTHOLD 770-1_100514A 3 Radium 226 -0.1 pCi/L U Radium 226 precision (±) 0.1 pCi/L Radium 226 MDC 0.2 pCi/L Sample ID: LCS-RA226-4529 05/24/10 22:06 Laboratory Control Sample Run: BERTHOLD 770-1_100514 A Radium 226 111 70 130 8.7 pCi/L

Method: E903.0 Batch: RA226-4533 Sample ID: C10050346-001EMS 05/24/10 20:54 Sample Matrix Spike Run: TENNELEC-3_100518B Radium 226 62 70 130 12.5 pCi/L S - Spike response is outside of the acceptance rangefor this analysis. Since the LCS and the RPD for the MS MSD pair are acceptable, the response is con sidered to be matrix related. The batch is approved. Sample ID: C10050346-001EMSD 05/24/10 20:54 Sample Matrix Spike Duplicate Run: TENNELEC-3_100518 B Radium 226 58 70 130 17.1 4.7 11.9 pCi/L S Sample ID: MB-RA226-4533 05/24/10 20:54 Method Blank Run: TENNELEC-3_100518B 3 Radium 226 0.2 pCi/L Radium 226 precision (±) 0.05 pCi/L Radium 226 MDC 0.06 pCi/L Sample ID: LCS-RA226-4533 05/24/10 20:54 Laboratory Control Sample Run: TENNELEC-3_100518B Radium 226 98 70 130 7.8 pCi/L

Method: E903.0 Batch: 26121 Sample ID: C10050312-001AMS 06/02/10 15:49 Sample Matrix Spike Run: TENNELEC-3_100520F Radium 226 115 70 130 12 pCi/g-dry Sample ID: C10050312-001AMSD 06/02/10 15:49 Sample Matrix Spike Duplicate Run: TENNELEC-3_100520 F Radium 226 106 70 130 19.6 6.4 12 pCi/g-dry Sample ID: LCS-26121 06/02/10 15:49 Laboratory Control Sample Run: TENNELEC-3_100520F Radium 226 99 70 130 1.5 pCi/g-dry Sample ID: MB-26121 06/02/10 15:49 Method Blank Run: TENNELEC-3_100520F 3 Radium 226 0.0001 pCi/g-dry U Radium 226 precision (±) 0.0002 pCi/g-dry Radium 226 MDC 0.0002 pCi/g-dry



### Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration S - Spike recovery outside of advisory limits. U - Not detected at minimum detectable concentrati on


## Page 20 of 25

### Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation Work Order: C10050360 

# QA/QC Summary Report

06/16/10 Report Date:

Analyte Result %REC RPD Low Limit High Limit RPDLimit RL Units Qual Count
Method: E907.0 Batch: 26121 Sample ID: C10050312-001AMS 05/24/10 09:03 Sample Matrix Spike Run: EGG-ORTEC_100520B Thorium 230 117 70 130 8.74 pCi/g-dry Sample ID: C10050312-001AMSD 05/24/10 13:19 Sample Matrix Spike Duplicate Run: EGG-ORTEC_100520B Thorium 230 140 70 130 45 0.9 8.66 pCi/g-dry S - Spike response is outside of the acceptance rangefor this analysis. Since the LCS and the RPD for the MS MSD pair are acceptable, the response is con sidered to be matrix related. The batch is approved. Sample ID: LCS-26121 05/24/10 13:19 Laboratory Control Sample Run: EGG-ORTEC_100520B Thorium 230 104 70 130 0.500 pCi/g-dry Sample ID: MB-26121 05/24/10 13:20 Method Blank Run: EGG-ORTEC_100520B 6 Thorium 230 -0.004 pCi/g-dry U Thorium 230 precision (±) 0.02 pCi/g-dry Thorium 230 MDC 0.03 pCi/g-dry Thorium 232 0.004 pCi/g-dry U Thorium 232 precision (±) 0.01 pCi/g-dry Thorium 232 MDC 0.02 pCi/g-dry



### Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration S - Spike recovery outside of advisory limits. U - Not detected at minimum detectable concentrati on


## Page 21 of 25

### Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation Work Order: C10050360 

# QA/QC Summary Report

06/16/10 Report Date:

Analyte Result %REC RPD Low Limit High Limit RPDLimit RL Units Qual Count
Method: E909.0M Batch: PB-210-0708 Sample ID: C10050383-001AMS 05/29/10 00:31 Sample Matrix Spike Run: PACKARD 3100TR_100525A Lead 210 103 70 130 108 pCi/g-dry Sample ID: C10050383-001AMSD 05/29/10 02:34 Sample Matrix Spike Duplicate Run: PACKARD 3100TR_10 0525A Lead 210 129 70 130 16.4 23 135 pCi/g-dry R - The RPD for the MSD is high. However, the indivi dual spike recoveries are within range therefore th e batch is approved. Sample ID: MB-26109 05/29/10 04:38 Method Blank Run: PACKARD 3100TR_100525A 3 Lead 210 ND pCi/L U Lead 210 precision (±) 10 pCi/L Lead 210 MDC 20 pCi/L Sample ID: LCS-26109 05/29/10 08:45 Laboratory Control Sample Run: PACKARD 3100TR_100525 A Lead 210 90 70 130 470 pCi/L



### Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration R - RPD exceeds advisory limit. U - Not detected at minimum detectable concentrati on


## Page 22 of 25

### Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation Work Order: C10050360 

# QA/QC Summary Report

06/16/10 Report Date:

Analyte Result %REC RPD Low Limit High Limit RPDLimit RL Units Qual Count
Method: RA-05 Batch: 26121 Sample ID: LCS-26121 05/27/10 16:42 Laboratory Control Sample Run: TENNELEC-3_100520E Radium 228 84 70 130 1.2 pCi/g-dry Sample ID: MB-26121 05/27/10 16:42 Method Blank Run: TENNELEC-3_100520E 3 Radium 228 -0.0006 pCi/g-dry U Radium 228 precision (±) 0.001 pCi/g-dry Radium 228 MDC 0.002 pCi/g-dry Sample ID: C10050360-009AMS 05/27/10 16:42 Sample Matrix Spike Run: TENNELEC-3_100520E Radium 228 88 70 130 6.4 pCi/g-dry Sample ID: C10050360-009AMSD 05/27/10 16:42 Sample Matrix Spike Duplicate Run: TENNELEC-3_100520 E Radium 228 82 70 130 34 7.8 5.9 pCi/g-dry



### Qualifiers: RL - Analyte reporting limit. ND - Not detected at the reporting limit. MDC - Minimum detectable concentration U - Not detected at minimum detectable concentrati on



## Page 23 of 25

## Page 24 of 25

## Page 25 of 25

# APPENDIX C

Radium Content Calculation Brief

## 1 

# Calculation Brief By: Zach Rogers Date: August 23, 2010 Re: Radium-226 concentration in soil vs . raffinate at t he Piñon Ridge Mill

The purpose of this calculation brief is to compare the acti vity of radium-226 ex pected to be in the raffinate to that in the background surface soil per uni t volume at the proposed Piñon Ridge Mill. Using available data, the radium-226 acti vity per cubic meter of raffinate a nd surface soil were calculated for comparison. The expected radium-226 activi ty in the raffinate is 234 ρ Ci/L based on laboratory analysis of a composite sample at pH 4.5 from a bench-scale raffinate sample preparation performed by J.E. Litz and Associates, LLC (ELI 2010, Litz 2010). This value was converted to an activity of 2.34 x 10 5 

# ρ Ci/m 3

# using a conversion factor of 1,000 L/m 3



# . The radium-226 activity in the background soil at the Piñon Ridge Mill is derived from the Baseline Radiological Investigation Report (ERG 2009). The radium-226 activities used were averaged from locations in which both surface soil and radon flux measurements were taken. These locations are included in Table 1. Table 1 Radium-226 in Soil

Sample Location Ra-226 Activity(1)



## (pCi/g) Ra-226 Activity (pCi/m 3 

## ) Average Ra-226 Activity (pCi/m 3 

## ) PRB-13 2.2 3.52E+06

2.35E+06 PRB-14 2.1 3.36E+06 PRB-16 0.9 1.44E+06 PRB-17 1.7 2.72E+06 PRB-18 2.4 3.84E+06 PRB-19 0.64 1.02E+06 PRB-20 0.49 7.84E+05 PRB-21 1.2 1.92E+06 PRB-23 1.6 2.56E+06 

# (1) ERG 2009

## 2 

# The radium-226 activities in these background surface soil samples range from 0.49 to 2.4 ρ Ci/g and average 1.5 ρ Ci/g. Although these locations are biased, they are generally consistent with randomly located surface soil samples collected at locationsacross the site that range from 0.13 to 4.6 ρ Ci/g and average 1.1 ρ Ci/g. Conversion of the surface soil activities required an estimated density of the soil. A value of 1,600 kg/m 3

# (2,700 lb/yd 3 

# ) was used based on the bank density of dry, loose sand (CAT 2006). The average radium-226 activity per cubic mete r of soil was estimated to be for the 2.4 x 10 6 

# ρ Ci/m 3 

# (based on 1.5 ρ Ci/g). The relative difference in radium ac tivity by volume in the backgroun d surface soil to the raffinate is approximately 10:1.

References Caterpillar (CAT) 2006. Caterpillar Reference Handbook, page 27-4. April. Energy Laboratories Inc. (E LI) 2010. Analytical Summa ry Report, Wo rkorder No. C10050360. June 16. Environmental Restoration Group, Inc (ERG) 2009. Baseline Radiological Investigation Report. Piñon Ridge Uranium Mill. Montrose County, Colorado. October 5. J.E. Litz Associates, LLC 2010. Memorandum to Zach Roger s from John Litz regarding Preparation of Raffinate Samples. June 1.