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 Content 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 uranium is extracted first followed by the 

vanadium. Most of the barren wastewater from the vanadium circuit, commonly referred 

to as vanadium raffinate or simply raffinate, will be recycled; however, an estimated 30 

percent will be disposed of in evaporation ponds. Characterization of the vanadium 

raffinate at the proposed Piñon Ridge Mill is necessary for engineering purposes and to 

study the potential environmental 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 during milling operations. Energy Fuels 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 produce 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 those that will be processed 

at the Piñon Ridge Mill. J.E. Litz originally 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 raffinate sample preparation. The raffinate 

sample preparation consisted of simulating the uranium and vanadium solvent 

extraction circuits. The resulting raffinate from the bench-scale vanadium solvent 

extraction circuit was sent to Energy Laboratories, Inc. for analysis of radium-226. Total 

dissolved solids and major ions were also analyzed in some of the samples for 

purposes unrelated to radon flux estimations. In addition, J.E. Litz evaporated a 

composite raffinate solution sample to produce 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 for radium-226, radium-228, thorium-230, 

throium-232, and lead-210. 

Radium-226 activities ranged from 59 to 600 ρCi/L in the raffinate samples from the five 

ores. A composite raffinate sample had an activity level of 234 ρCi/L. The raffinate 

crystals contained 7.9 ρCi/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 conventional 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 rock particles and enter into solution. The 

minerals are then recovered from the leach solution using solvent extraction methods 

and precipitated as uranium oxide (U3O8) concentrate (called yellowcake) and vanadium 

oxide (V2O5) concentrate, respectively. These dry concentrates are sealed in 55-gallon, 

steel drums and transported off site for further 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 primary component of the milling process. The 

vanadium solvent extraction process is described in more detail because it is the stage 

in which the raffinate is produced. Figure 1, Process Flowsheet, illustrates 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 feed hopper and delivered by belt conveyor to 

a semi-autogenous grinding (SAG) mill. In the SAG mill, the 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, consisting of minus 0.03-inch sized particles and 

water, is distributed to one of two large pulp 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 contains excess sulfuric acid. The pulp is then 

pumped to a thickener tank where the aqueous overflow from the thickener is clarified 

and sent to a feed tank for use in the uranium recovery circuit. The 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 that individual tanks can be bypassed if 

necessary. In the leaching circuit, the pulp pumped from the pre-leach thickener tank is 

heated with steam and leached with sulfuric acid 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 to concentrate and recover the uranium from 

the pregnant aqueous solution. In the SX process, the aqueous solution is filtered and 

the uranium extracted and purified using a kerosene-based solvent, commonly referred 

to as the organic solution or simply the “organic.” Following scrubbing, the uranium is 

stripped from the organic and concentrated using 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 yellowcake 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 solution from that process (also known as the uranium 

raffinate) is pumped to the vanadium SX circuit for extraction of vanadium. Figure 2 

shows the layout of the vanadium SX portion of the mill. 

Before the dissolved vanadium can be extracted from the aqueous solution, it must first 

be oxidized and re-filtered. The oxidation is performed in a series of five agitated tanks 

where sodium chlorate is added. Ammonia is also 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 kerosene with an amine extractant, is circulated counter-current 

to the pregnant solution. The organic selectively removes the vanadium from the 

aqueous solution and concentrates it by two- to three-fold in the organic solution. The 

process starts by pumping the pregnant solution from the vanadium SX feed tank to the 

first of five vanadium mixer-settler tanks, and pumping the barren organic solution to the 

fifth mixer settler tank. The aqueous solution 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 within 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 then stripped from the organic carrier in 

three stripper-mixer-settlers using a caustic sodium carbonate/sodium hydroxide 

solution. The vanadium is then precipitated, dewatered, and dried in a kiln. The V2O5

discharging from the kiln is melted in a furnace 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 final 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 metal-laden precipitates are removed in the 

polishing filters and pumped to the tailings cell for disposal. The remaining precipitates 

are either entrained in the organics and removed 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-scale testing 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 metals, 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, sulfuric acid and sodium carbonate were added to 

achieve free acid content and oxidation potential goals. The leach process continued 

for 24 hours total. 

The ore amenability bench-scale testing was used primarily to collect 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 metal concentrations, especially those for 

selenium, proved to be elevated above ecological 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 processes. However, the pH of the raffinate 

was increased to 4.5 after the extractions to approximate the raffinate 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 with hydrated lime. Extraction of the bulk of the uranium was 

performed by contacting with a solvent containing 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. the uranium raffinates, were oxidized by heat 

and sodium chlorate. The vanadium was then extracted from each of the uranium 

raffinates by one to two contacts with the stripped solvent from the uranium extraction. 

The solvent solution was subsequently stripped 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 vanadium raffinates were neutralized to a pH of 

4.5, the approximate design pH of the vanadium raffinate, with hydrated lime. Aliquots 

from each of the five pH 4.5 raffinates were composited. Samples of pH 4.5 raffinates 

from each of the five ores and 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 composited 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 preparation 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 estimating 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 also analyzed in several of the raffinate 
8

samples for other uses. The complete laboratory report is included as Appendix B to 

this report. 

Table 1 

Ra-226 Raffinate Analytical Summary 

Sample ID 

Radium-226 

Activity 

(ρCi/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 

(ρCi/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 control indicates the instruments appear to 

be functioning properly because method blanks, spike, and duplicate concentrations 

were within the acceptable ranges per the specified methods. Where quality control 

samples were outside of acceptable ranges, the laboratory provided notes that indicated 

or resolved the discrepancies. The laboratory QA/QC Summary Report 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 

ρCi/L. The average activity of the five raffinates was 241 ρCi/L which is consistent with 

the composite pH 4.5 raffinate sample at 234 ρCi/L. The large variation in activity levels 

of the individual samples is not attributable to the 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 U3O8) of the five samples tested. Similarly, the Packrat raffinate had the 

lowest radium-226 level but the Packrat ore had the second highest uranium 

concentration (0.527 percent U3O8) of the five samples tested. 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 that 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 separate 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. Accordingly, 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 rate, the maximum observed value (600 ρCi/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 possible that the mill may 

occasionally run ore from the Chinle Formation from eastern Utah. The Chinle ore does 

not contain vanadium and therefore would produce a lower pH raffinate similar to that of 

the JD-8 sample. 

The three composite raffinate samples at various pH levels indicate a 70% drop (from 

840 ρCi/L to 234 ρCi/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 clearly demonstrates the influence of pH on the 

solubility of radium. It also shows the large effect that the vanadium circuit has on 

lowering radium-226 levels in the evaporation pond. Interestingly, the amount of 

radium-226 in the evaporation pond, assuming an activity level of 234 ρCi/L, is only 

about 10% of the radium-226 found in the surrounding native soils for an equivalent 

volume. The calculations demonstrating this relationship 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 ρCi/g. By comparison, the tailings are expected to have an 

average radium-226 level of 647 ρCi/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 ρCi/g but background activity 

levels as high as 24 ρCi/g were recorded in samples collected in the drainages on the 

south end of the site. This is not unexpected or unusual for this area of the State, as 

the drainages carry eroded soil and rock from the mineralized Salt Wash sandstone 

exposed on the side of the mesa above. This is 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 ρCi/g. If we assume equilibrium, these radionuclides 

would have identical activity levels. A small amount of disequilibrium is, however, not 

unusual. As a second check, the composite 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 ρCi/g (i.e., 234 ρCi/L divided by 15.2 g/L). Although slightly higher, this value is 

generally consistent with the measured 7.9 ρCi/g. The difference is primarily 

attributable to the inherent inaccuracy in measuring radioactivity levels. The radium-226 

activity level of 7.9 ρCi/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 Radiological Investigation 

Report. Piñon Ridge Uranium Mill. Montrose County, Colorado. October 5. 

Golder Associates Inc. (Golder) 2010. Uranium Mill Tailings Radon Flux Calculations, 

Piñon Ridge Project, August 17. 

SENES Consultants Limited (SENES) 2010. Evaporation Pond Radon Flux Analysis. 

Piñon Ridge Mill Project. Montrose County, 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 Matrix 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, Inc., 2393 Salt Creek Hwy., Casper, WY 82601. Any exceptions 

or problems with the analyses are noted in the Laboratory Analytical Report, the QA/QC Summary Report, or the 

Case Narrative. 

The results as reported relate only to the item(s) submitted for testing. 

If you have any questions regarding these test results, please call.

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 RL Method Analysis Date / By

MCL/

Qualifiers QCL

RADIONUCLIDES - TOTAL

Radium 226 81 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 precision (±) 2.8 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 MDC 0.44 pCi/L E903.0 05/24/10 16:11 / jah

RADIONUCLIDES - TOTAL

Radium 226 81 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 precision (±) 2.8 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 MDC 0.44 pCi/L E903.0 05/24/10 16:11 / jah

RADIONUCLIDES - TOTAL

Radium 226 81 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 precision (±) 2.8 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 MDC 0.44 pCi/L E903.0 05/24/10 16:11 / jah

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 RL Method Analysis Date / By

MCL/

Qualifiers QCL

RADIONUCLIDES - TOTAL

Radium 226 59 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 precision (±) 2.4 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 MDC 0.46 pCi/L E903.0 05/24/10 16:11 / jah

RADIONUCLIDES - TOTAL

Radium 226 59 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 precision (±) 2.4 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 MDC 0.46 pCi/L E903.0 05/24/10 16:11 / jah

RADIONUCLIDES - TOTAL

Radium 226 59 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 precision (±) 2.4 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 MDC 0.46 pCi/L E903.0 05/24/10 16:11 / jah

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 RL Method Analysis Date / By

MCL/

Qualifiers QCL

RADIONUCLIDES - TOTAL

Radium 226 258 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 precision (±) 5.1 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 MDC 0.48 pCi/L E903.0 05/24/10 16:11 / jah

RADIONUCLIDES - TOTAL

Radium 226 258 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 precision (±) 5.1 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 MDC 0.48 pCi/L E903.0 05/24/10 16:11 / jah

RADIONUCLIDES - TOTAL

Radium 226 258 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 precision (±) 5.1 pCi/L E903.0 05/24/10 16:11 / jah

Radium 226 MDC 0.48 pCi/L E903.0 05/24/10 16:11 / jah

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 RL Method Analysis Date / By

MCL/

Qualifiers QCL

MAJOR IONS

Alkalinity, Total as CaCO3 5 mg/L 5 A2320 B 05/20/10 11:30 / ljl

Bicarbonate as HCO3 6 mg/L 5 A2320 B 05/20/10 11:30 / ljl

Calcium 660 mg/L 1 E200.7 05/17/10 13:54 / cp

Chloride 367 mg/L 1 E300.0 05/15/10 12:14 / ljl

Fluoride 0.8 mg/L 0.1 A4500-F C 05/18/10 14:34 / ljl

Magnesium 1990 mg/L 1 E200.7 05/17/10 13:54 / cp

Nitrogen, Nitrate+Nitrite as N 1.4 mg/L 0.1 E353.2 05/17/10 16:41 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:44 / ja

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

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

Sodium 933 mg/L D 3 E200.7 05/17/10 13:54 / cp

Sulfate 10500 mg/L D 6 E300.0 05/15/10 12:14 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 600 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 3.8 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.17 pCi/L E903.0 05/24/10 20:54 / trs

MAJOR IONS

Alkalinity, Total as CaCO3 5 mg/L 5 A2320 B 05/20/10 11:30 / ljl

Bicarbonate as HCO3 6 mg/L 5 A2320 B 05/20/10 11:30 / ljl

Calcium 660 mg/L 1 E200.7 05/17/10 13:54 / cp

Chloride 367 mg/L 1 E300.0 05/15/10 12:14 / ljl

Fluoride 0.8 mg/L 0.1 A4500-F C 05/18/10 14:34 / ljl

Magnesium 1990 mg/L 1 E200.7 05/17/10 13:54 / cp

Nitrogen, Nitrate+Nitrite as N 1.4 mg/L 0.1 E353.2 05/17/10 16:41 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:44 / ja

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

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

Sodium 933 mg/L D 3 E200.7 05/17/10 13:54 / cp

Sulfate 10500 mg/L D 6 E300.0 05/15/10 12:14 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 600 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 3.8 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.17 pCi/L E903.0 05/24/10 20:54 / trs

MAJOR IONS

Alkalinity, Total as CaCO3 5 mg/L 5 A2320 B 05/20/10 11:30 / ljl

Bicarbonate as HCO3 6 mg/L 5 A2320 B 05/20/10 11:30 / ljl

Calcium 660 mg/L 1 E200.7 05/17/10 13:54 / cp

Chloride 367 mg/L 1 E300.0 05/15/10 12:14 / ljl

Fluoride 0.8 mg/L 0.1 A4500-F C 05/18/10 14:34 / ljl

Magnesium 1990 mg/L 1 E200.7 05/17/10 13:54 / cp

Nitrogen, Nitrate+Nitrite as N 1.4 mg/L 0.1 E353.2 05/17/10 16:41 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:44 / ja

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

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

Sodium 933 mg/L D 3 E200.7 05/17/10 13:54 / cp

Sulfate 10500 mg/L D 6 E300.0 05/15/10 12:14 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 600 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 3.8 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.17 pCi/L E903.0 05/24/10 20:54 / trs

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 increased 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 RL Method Analysis Date / By

MCL/

Qualifiers QCL

MAJOR IONS

Alkalinity, Total as CaCO3 10 mg/L 5 A2320 B 05/20/10 11:32 / ljl

Bicarbonate as HCO3 12 mg/L 5 A2320 B 05/20/10 11:32 / ljl

Calcium 743 mg/L 1 E200.7 05/17/10 14:06 / cp

Chloride 471 mg/L 1 E300.0 05/15/10 12:29 / ljl

Fluoride 0.2 mg/L 0.1 A4500-F C 05/18/10 14:38 / ljl

Magnesium 1050 mg/L 1 E200.7 05/17/10 14:06 / cp

Nitrogen, Nitrate+Nitrite as N 0.6 mg/L 0.1 E353.2 05/17/10 16:43 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:44 / ja

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

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

Sodium 787 mg/L D 3 E200.7 05/17/10 14:06 / cp

Sulfate 6680 mg/L D 3 E300.0 05/15/10 12:29 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 208 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 2.3 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.18 pCi/L E903.0 05/24/10 20:54 / trs

MAJOR IONS

Alkalinity, Total as CaCO3 10 mg/L 5 A2320 B 05/20/10 11:32 / ljl

Bicarbonate as HCO3 12 mg/L 5 A2320 B 05/20/10 11:32 / ljl

Calcium 743 mg/L 1 E200.7 05/17/10 14:06 / cp

Chloride 471 mg/L 1 E300.0 05/15/10 12:29 / ljl

Fluoride 0.2 mg/L 0.1 A4500-F C 05/18/10 14:38 / ljl

Magnesium 1050 mg/L 1 E200.7 05/17/10 14:06 / cp

Nitrogen, Nitrate+Nitrite as N 0.6 mg/L 0.1 E353.2 05/17/10 16:43 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:44 / ja

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

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

Sodium 787 mg/L D 3 E200.7 05/17/10 14:06 / cp

Sulfate 6680 mg/L D 3 E300.0 05/15/10 12:29 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 208 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 2.3 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.18 pCi/L E903.0 05/24/10 20:54 / trs

MAJOR IONS

Alkalinity, Total as CaCO3 10 mg/L 5 A2320 B 05/20/10 11:32 / ljl

Bicarbonate as HCO3 12 mg/L 5 A2320 B 05/20/10 11:32 / ljl

Calcium 743 mg/L 1 E200.7 05/17/10 14:06 / cp

Chloride 471 mg/L 1 E300.0 05/15/10 12:29 / ljl

Fluoride 0.2 mg/L 0.1 A4500-F C 05/18/10 14:38 / ljl

Magnesium 1050 mg/L 1 E200.7 05/17/10 14:06 / cp

Nitrogen, Nitrate+Nitrite as N 0.6 mg/L 0.1 E353.2 05/17/10 16:43 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:44 / ja

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

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

Sodium 787 mg/L D 3 E200.7 05/17/10 14:06 / cp

Sulfate 6680 mg/L D 3 E300.0 05/15/10 12:29 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 208 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 2.3 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.18 pCi/L E903.0 05/24/10 20:54 / trs

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 increased 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 RL Method Analysis Date / By

MCL/

Qualifiers QCL

MAJOR IONS

Alkalinity, Total as CaCO3 ND mg/L 5 A2320 B 05/20/10 11:33 / ljl

Bicarbonate as HCO3 ND mg/L 5 A2320 B 05/20/10 11:33 / ljl

Calcium 568 mg/L D 6 E200.7 05/14/10 18:01 / cp

Chloride 568 mg/L D 3 E300.0 05/15/10 12:45 / ljl

Fluoride ND mg/L D 0.5 A4500-F C 05/18/10 14:41 / ljl

Magnesium 1520 mg/L D 5 E200.7 05/14/10 18:01 / cp

Nitrogen, Nitrate+Nitrite as N 1.5 mg/L D 0.4 E353.2 05/17/10 16:46 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:44 / ja

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

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

Sodium 1960 mg/L D 20 E200.7 05/14/10 18:01 / cp

Sulfate 31400 mg/L D 10 E300.0 05/15/10 12:45 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 840 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 3.7 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.11 pCi/L E903.0 05/24/10 20:54 / trs

MAJOR IONS

Alkalinity, Total as CaCO3 ND mg/L 5 A2320 B 05/20/10 11:33 / ljl

Bicarbonate as HCO3 ND mg/L 5 A2320 B 05/20/10 11:33 / ljl

Calcium 568 mg/L D 6 E200.7 05/14/10 18:01 / cp

Chloride 568 mg/L D 3 E300.0 05/15/10 12:45 / ljl

Fluoride ND mg/L D 0.5 A4500-F C 05/18/10 14:41 / ljl

Magnesium 1520 mg/L D 5 E200.7 05/14/10 18:01 / cp

Nitrogen, Nitrate+Nitrite as N 1.5 mg/L D 0.4 E353.2 05/17/10 16:46 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:44 / ja

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

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

Sodium 1960 mg/L D 20 E200.7 05/14/10 18:01 / cp

Sulfate 31400 mg/L D 10 E300.0 05/15/10 12:45 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 840 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 3.7 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.11 pCi/L E903.0 05/24/10 20:54 / trs

MAJOR IONS

Alkalinity, Total as CaCO3 ND mg/L 5 A2320 B 05/20/10 11:33 / ljl

Bicarbonate as HCO3 ND mg/L 5 A2320 B 05/20/10 11:33 / ljl

Calcium 568 mg/L D 6 E200.7 05/14/10 18:01 / cp

Chloride 568 mg/L D 3 E300.0 05/15/10 12:45 / ljl

Fluoride ND mg/L D 0.5 A4500-F C 05/18/10 14:41 / ljl

Magnesium 1520 mg/L D 5 E200.7 05/14/10 18:01 / cp

Nitrogen, Nitrate+Nitrite as N 1.5 mg/L D 0.4 E353.2 05/17/10 16:46 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:44 / ja

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

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

Sodium 1960 mg/L D 20 E200.7 05/14/10 18:01 / cp

Sulfate 31400 mg/L D 10 E300.0 05/15/10 12:45 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 840 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 3.7 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.11 pCi/L E903.0 05/24/10 20:54 / trs

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 increased 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 RL Method Analysis Date / By

MCL/

Qualifiers QCL

MAJOR IONS

Alkalinity, Total as CaCO3 10 mg/L 5 A2320 B 05/20/10 11:35 / ljl

Bicarbonate as HCO3 12 mg/L 5 A2320 B 05/20/10 11:35 / ljl

Calcium 590 mg/L 1 E200.7 05/17/10 14:15 / cp

Chloride 537 mg/L 1 E300.0 05/15/10 13:00 / ljl

Fluoride 0.6 mg/L 0.1 A4500-F C 05/18/10 14:49 / ljl

Magnesium 1340 mg/L 1 E200.7 05/17/10 14:15 / cp

Nitrogen, Nitrate+Nitrite as N 0.9 mg/L 0.1 E353.2 05/17/10 16:48 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:45 / ja

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

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

Sodium 2010 mg/L D 3 E200.7 05/17/10 14:15 / cp

Sulfate 10700 mg/L D 6 E300.0 05/15/10 13:00 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 234 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 1.7 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.09 pCi/L E903.0 05/24/10 20:54 / trs

MAJOR IONS

Alkalinity, Total as CaCO3 10 mg/L 5 A2320 B 05/20/10 11:35 / ljl

Bicarbonate as HCO3 12 mg/L 5 A2320 B 05/20/10 11:35 / ljl

Calcium 590 mg/L 1 E200.7 05/17/10 14:15 / cp

Chloride 537 mg/L 1 E300.0 05/15/10 13:00 / ljl

Fluoride 0.6 mg/L 0.1 A4500-F C 05/18/10 14:49 / ljl

Magnesium 1340 mg/L 1 E200.7 05/17/10 14:15 / cp

Nitrogen, Nitrate+Nitrite as N 0.9 mg/L 0.1 E353.2 05/17/10 16:48 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:45 / ja

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

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

Sodium 2010 mg/L D 3 E200.7 05/17/10 14:15 / cp

Sulfate 10700 mg/L D 6 E300.0 05/15/10 13:00 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 234 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 1.7 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.09 pCi/L E903.0 05/24/10 20:54 / trs

MAJOR IONS

Alkalinity, Total as CaCO3 10 mg/L 5 A2320 B 05/20/10 11:35 / ljl

Bicarbonate as HCO3 12 mg/L 5 A2320 B 05/20/10 11:35 / ljl

Calcium 590 mg/L 1 E200.7 05/17/10 14:15 / cp

Chloride 537 mg/L 1 E300.0 05/15/10 13:00 / ljl

Fluoride 0.6 mg/L 0.1 A4500-F C 05/18/10 14:49 / ljl

Magnesium 1340 mg/L 1 E200.7 05/17/10 14:15 / cp

Nitrogen, Nitrate+Nitrite as N 0.9 mg/L 0.1 E353.2 05/17/10 16:48 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:45 / ja

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

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

Sodium 2010 mg/L D 3 E200.7 05/17/10 14:15 / cp

Sulfate 10700 mg/L D 6 E300.0 05/15/10 13:00 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 234 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 1.7 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.09 pCi/L E903.0 05/24/10 20:54 / trs

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 increased 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 RL Method Analysis Date / By

MCL/

Qualifiers QCL

MAJOR IONS

Alkalinity, Total as CaCO3 35 mg/L 5 A2320 B 05/20/10 11:43 / ljl

Bicarbonate as HCO3 43 mg/L 5 A2320 B 05/20/10 11:43 / ljl

Calcium 766 mg/L 1 E200.7 05/17/10 14:31 / cp

Chloride 536 mg/L 1 E300.0 05/15/10 13:15 / ljl

Fluoride 0.4 mg/L 0.1 A4500-F C 05/18/10 15:15 / ljl

Magnesium 1300 mg/L 1 E200.7 05/17/10 14:31 / cp

Nitrogen, Nitrate+Nitrite as N 1.4 mg/L 0.1 E353.2 05/17/10 16:51 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:45 / ja

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

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

Sodium 2020 mg/L D 3 E200.7 05/17/10 14:31 / cp

Sulfate 10100 mg/L D 6 E300.0 05/15/10 13:15 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 211 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 1.7 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.09 pCi/L E903.0 05/24/10 20:54 / trs

MAJOR IONS

Alkalinity, Total as CaCO3 35 mg/L 5 A2320 B 05/20/10 11:43 / ljl

Bicarbonate as HCO3 43 mg/L 5 A2320 B 05/20/10 11:43 / ljl

Calcium 766 mg/L 1 E200.7 05/17/10 14:31 / cp

Chloride 536 mg/L 1 E300.0 05/15/10 13:15 / ljl

Fluoride 0.4 mg/L 0.1 A4500-F C 05/18/10 15:15 / ljl

Magnesium 1300 mg/L 1 E200.7 05/17/10 14:31 / cp

Nitrogen, Nitrate+Nitrite as N 1.4 mg/L 0.1 E353.2 05/17/10 16:51 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:45 / ja

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

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

Sodium 2020 mg/L D 3 E200.7 05/17/10 14:31 / cp

Sulfate 10100 mg/L D 6 E300.0 05/15/10 13:15 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 211 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 1.7 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.09 pCi/L E903.0 05/24/10 20:54 / trs

MAJOR IONS

Alkalinity, Total as CaCO3 35 mg/L 5 A2320 B 05/20/10 11:43 / ljl

Bicarbonate as HCO3 43 mg/L 5 A2320 B 05/20/10 11:43 / ljl

Calcium 766 mg/L 1 E200.7 05/17/10 14:31 / cp

Chloride 536 mg/L 1 E300.0 05/15/10 13:15 / ljl

Fluoride 0.4 mg/L 0.1 A4500-F C 05/18/10 15:15 / ljl

Magnesium 1300 mg/L 1 E200.7 05/17/10 14:31 / cp

Nitrogen, Nitrate+Nitrite as N 1.4 mg/L 0.1 E353.2 05/17/10 16:51 / ljl

Nitrogen, Nitrite as N ND mg/L 0.1 A4500-NO2 B 05/12/10 15:45 / ja

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

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

Sodium 2020 mg/L D 3 E200.7 05/17/10 14:31 / cp

Sulfate 10100 mg/L D 6 E300.0 05/15/10 13:15 / ljl

PHYSICAL PROPERTIES

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

RADIONUCLIDES - TOTAL

Radium 226 211 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 precision (±) 1.7 pCi/L E903.0 05/24/10 20:54 / trs

Radium 226 MDC 0.09 pCi/L E903.0 05/24/10 20:54 / trs

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 increased 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 RL Method Analysis Date / By

MCL/

Qualifiers QCL

RADIONUCLIDES - TOTAL

Lead 210 3.5 pCi/g-dry E909.0M 05/28/10 20:23 / dm

Lead 210 precision (±) 1.4 pCi/g-dry E909.0M 05/28/10 20:23 / dm

Lead 210 MDC 2.3 pCi/g-dry E909.0M 05/28/10 20:23 / dm

Radium 226 7.9 pCi/g-dry E903.0 06/02/10 15:49 / trs

Radium 226 precision (±) 0.3 pCi/g-dry E903.0 06/02/10 15:49 / trs

Radium 226 MDC 0.06 pCi/g-dry E903.0 06/02/10 15:49 / trs

Radium 228 0.05 pCi/g-dry U RA-05 05/27/10 16:42 / plj

Radium 228 precision (±) 0.3 pCi/g-dry RA-05 05/27/10 16:42 / plj

Radium 228 MDC 0.4 pCi/g-dry RA-05 05/27/10 16:42 / plj

Thorium 230 19 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Thorium 230 precision (±) 3.2 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Thorium 230 MDC 0.1 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Thorium 232 0.1 pCi/g-dry U E907.0 05/24/10 13:19 / dmf

Thorium 232 precision (±) 0.09 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Thorium 232 MDC 0.1 pCi/g-dry E907.0 05/24/10 13:19 / dmf

RADIONUCLIDES - TOTAL

Lead 210 3.5 pCi/g-dry E909.0M 05/28/10 20:23 / dm

Lead 210 precision (±) 1.4 pCi/g-dry E909.0M 05/28/10 20:23 / dm

Lead 210 MDC 2.3 pCi/g-dry E909.0M 05/28/10 20:23 / dm

Radium 226 7.9 pCi/g-dry E903.0 06/02/10 15:49 / trs

Radium 226 precision (±) 0.3 pCi/g-dry E903.0 06/02/10 15:49 / trs

Radium 226 MDC 0.06 pCi/g-dry E903.0 06/02/10 15:49 / trs

Radium 228 0.05 pCi/g-dry U RA-05 05/27/10 16:42 / plj

Radium 228 precision (±) 0.3 pCi/g-dry RA-05 05/27/10 16:42 / plj

Radium 228 MDC 0.4 pCi/g-dry RA-05 05/27/10 16:42 / plj

Thorium 230 19 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Thorium 230 precision (±) 3.2 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Thorium 230 MDC 0.1 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Thorium 232 0.1 pCi/g-dry U E907.0 05/24/10 13:19 / dmf

Thorium 232 precision (±) 0.09 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Thorium 232 MDC 0.1 pCi/g-dry E907.0 05/24/10 13:19 / dmf

RADIONUCLIDES - TOTAL

Lead 210 3.5 pCi/g-dry E909.0M 05/28/10 20:23 / dm

Lead 210 precision (±) 1.4 pCi/g-dry E909.0M 05/28/10 20:23 / dm

Lead 210 MDC 2.3 pCi/g-dry E909.0M 05/28/10 20:23 / dm

Radium 226 7.9 pCi/g-dry E903.0 06/02/10 15:49 / trs

Radium 226 precision (±) 0.3 pCi/g-dry E903.0 06/02/10 15:49 / trs

Radium 226 MDC 0.06 pCi/g-dry E903.0 06/02/10 15:49 / trs

Radium 228 0.05 pCi/g-dry U RA-05 05/27/10 16:42 / plj

Radium 228 precision (±) 0.3 pCi/g-dry RA-05 05/27/10 16:42 / plj

Radium 228 MDC 0.4 pCi/g-dry RA-05 05/27/10 16:42 / plj

Thorium 230 19 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Thorium 230 precision (±) 3.2 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Thorium 230 MDC 0.1 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Thorium 232 0.1 pCi/g-dry U E907.0 05/24/10 13:19 / dmf

Thorium 232 precision (±) 0.09 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Thorium 232 MDC 0.1 pCi/g-dry E907.0 05/24/10 13:19 / dmf

Report

Definitions: 

RL - Analyte reporting limit. MCL - Maximum contaminant level.

QCL - Quality control limit. ND - Not detected at the reporting limit.

MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration

Page 11 of 25
Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation

Work Order: C10050360

QA/QC Summary Report

Report Date: 06/16/10

Analyte Count Result %REC Units RL Low Limit High Limit RPDLimit RPD Qual

Method: A2320 B Batch: 100520_2_ALK-W

Sample ID: MBLK 2 Method Blank Run: TTR-ALK_100520B 05/20/10 11:11

Alkalinity, Total as CaCO3 1 mg/L 1

Bicarbonate as HCO3 1 mg/L 1

Sample ID: LCS1 Laboratory Control Sample Run: TTR-ALK_100520B 05/20/10 11:19

Alkalinity, Total as CaCO3 197 mg/L 5.0 98 90 110

Sample ID: LCS Laboratory Control Sample Run: TTR-ALK_100520B 05/20/10 11:26

Alkalinity, Total as CaCO3 50.0 mg/L 5.0 98 90 110

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

Report Date: 06/16/10

Analyte Count Result %REC Units RL Low Limit High Limit RPDLimit RPD Qual

Method: A2540 C Batch: 100512_1_SLDS-TDS-W

Sample ID: MBLK1_100512 Method Blank Run: BAL-1_100512B 05/12/10 15:01

Solids, Total Dissolved TDS @ 180 C ND mg/L 10

Sample ID: LCS1_100512 Laboratory Control Sample Run: BAL-1_100512B 05/12/10 15:01

Solids, Total Dissolved TDS @ 180 C 995 mg/L 10 100 90 110

Sample ID: C10050358-002CMS Sample Matrix Spike Run: BAL-1_100512B 05/12/10 15:04

Solids, Total Dissolved TDS @ 180 C 3270 mg/L 10 105 90 110

Sample ID: C10050358-002CMSD Sample Matrix Spike Duplicate Run: BAL-1_100512B 05/12/10 15:04

Solids, Total Dissolved TDS @ 180 C 3280 mg/L 10 105 90 110 10 0.1

Sample ID: C10050369-004AMS Sample Matrix Spike Run: BAL-1_100512B 05/12/10 15:08

Solids, Total Dissolved TDS @ 180 C 5700 mg/L 10 106 90 110

Sample ID: C10050369-004AMSD Sample Matrix Spike Duplicate Run: BAL-1_100512B 05/12/10 15:08

Solids, Total Dissolved TDS @ 180 C 5740 mg/L 10 108 90 110 10 0.7

Method: A2540 C Batch: 100514_2_SLDS-TDS-W

Sample ID: MBLK1_100514 Method Blank Run: BAL-1_100514A 05/14/10 14:17

Solids, Total Dissolved TDS @ 180 C ND mg/L 10

Sample ID: LCS1_100514 Laboratory Control Sample Run: BAL-1_100514A 05/14/10 14:17

Solids, Total Dissolved TDS @ 180 C 977 mg/L 10 98 90 110

Sample ID: C10050436-001AMS Sample Matrix Spike Run: BAL-1_100514A 05/14/10 14:20

Solids, Total Dissolved TDS @ 180 C 2560 mg/L 10 104 90 110

Sample ID: C10050436-001AMSD Sample Matrix Spike Duplicate Run: BAL-1_100514A 05/14/10 14:21

Solids, Total Dissolved TDS @ 180 C 2580 mg/L 10 105 90 110 10 1

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

Report Date: 06/16/10

Analyte Count Result %REC Units RL Low Limit High Limit RPDLimit RPD Qual

Method: A4500-F C Batch: R132857

Sample ID: MBLK Method Blank Run: MANTECH_100518A 05/18/10 11:10

Fluoride ND mg/L 0.05

Sample ID: LCS Laboratory Control Sample Run: MANTECH_100518A 05/18/10 11:14

Fluoride 1.04 mg/L 0.10 104 90 110

Sample ID: C10050358-001CMS Sample Matrix Spike Run: MANTECH_100518A 05/18/10 14:19

Fluoride 1.33 mg/L 0.10 108 80 120

Sample ID: C10050358-001CMSD Sample Matrix Spike Duplicate Run: MANTECH_100518A 05/18/10 14:23

Fluoride 1.33 mg/L 0.10 108 80 120 10 0

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

Report Date: 06/16/10

Analyte Count Result %REC Units RL Low Limit High Limit RPDLimit RPD Qual

Method: A4500-NO2 B Analytical Run: HACH DR3000_100512B

Sample ID: ICV-2 Initial Calibration Verification Standard 05/12/10 15:43

Nitrogen, Nitrite as N 0.990 mg/L 0.10 99 90 110

Method: A4500-NO2 B Batch: A2010-05-12_6_NO2_01

Sample ID: MBLK-1 Method Blank Run: HACH DR3000_100512B 05/12/10 15:43

Nitrogen, Nitrite as N ND mg/L 0.001

Sample ID: C10050355-001AMS Sample Matrix Spike Run: HACH DR3000_100512B 05/12/10 15:45

Nitrogen, Nitrite as N 0.0453 mg/L 0.10 95 90 110

Sample ID: C10050355-001AMSD Sample Matrix Spike Duplicate Run: HACH DR3000_100512B 05/12/10 15:45

Nitrogen, Nitrite as N 0.0453 mg/L 0.10 95 90 110 10

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

Report Date: 06/16/10

Analyte Count Result %REC Units RL Low Limit High Limit RPDLimit RPD Qual

Method: E200.7 Batch: 26100

Sample ID: MB-26100 5 Method Blank Run: ICP2-C_100514A 05/14/10 17:41

Calcium ND mg/L 0.1

Magnesium ND mg/L 0.09

Phosphorus ND mg/L 0.02

Potassium ND mg/L 0.1

Sodium ND mg/L 0.3

Sample ID: LCS3-26100 5 Laboratory Control Sample Run: ICP2-C_100514A 05/14/10 17:45

Calcium 25.0 mg/L 1.0 100 85 115

Magnesium 24.4 mg/L 1.0 98 85 115

Phosphorus 5.02 mg/L 0.10 100 85 115

Potassium 24.2 mg/L 1.0 97 85 115

Sodium 24.7 mg/L 1.0 99 85 115

Sample ID: C10050216-001BMS3 5 Sample Matrix Spike Run: ICP2-C_100514A 05/14/10 17:53

Calcium 84.4 mg/L 1.0 107 70 130

Magnesium 44.5 mg/L 1.0 103 70 130

Phosphorus 22.9 mg/L 0.10 117 70 130

Potassium 70.2 mg/L 1.0 109 70 130

Sodium 615 mg/L 1.0 70 130 A

Sample ID: C10050216-001BMSD 5 Sample Matrix Spike Duplicate Run: ICP2-C_100514A 05/14/10 17:57

Calcium 87.1 mg/L 1.0 118 70 130 20 3.2

Magnesium 44.9 mg/L 1.0 105 70 130 20 1.1

Phosphorus 23.0 mg/L 0.10 120 70 130 20 0.7

Potassium 67.9 mg/L 1.0 100 70 130 20 3.3

Sodium 615 mg/L 1.0 70 130 20 0 A

Qualifiers: 

RL - Analyte reporting limit. A - The analyte level was greater than four times the spike level. In 

accordance with the method % recovery is not calculated.

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

Report Date: 06/16/10

Analyte Count Result %REC Units RL Low Limit High Limit RPDLimit RPD Qual

Method: E200.7 Batch: R132821

Sample ID: MB-100517A 5 Method Blank Run: ICP2-C_100517A 05/17/10 12:43

Calcium ND mg/L 0.2

Magnesium ND mg/L 0.05

Phosphorus ND mg/L 0.03

Potassium ND mg/L 0.02

Sodium ND mg/L 0.3

Sample ID: LFB-100517A 5 Laboratory Fortified Blank Run: ICP2-C_100517A 05/17/10 12:48

Calcium 48.2 mg/L 0.50 96 85 115

Magnesium 46.9 mg/L 0.50 94 85 115

Phosphorus 0.953 mg/L 0.10 95 85 115

Potassium 44.6 mg/L 0.50 89 85 115

Sodium 48.4 mg/L 0.50 97 85 115

Sample ID: C10050360-004BMS2 5 Sample Matrix Spike Run: ICP2-C_100517A 05/17/10 13:58

Calcium 1150 mg/L 1.2 95 70 130

Magnesium 2430 mg/L 1.0 87 70 130

Phosphorus 9.92 mg/L 0.16 97 70 130

Potassium 748 mg/L 1.1 78 70 130

Sodium 1410 mg/L 3.2 94 70 130

Sample ID: C10050360-004BMSD 5 Sample Matrix Spike Duplicate Run: ICP2-C_100517A 05/17/10 14:02

Calcium 1140 mg/L 1.2 94 70 130 20 0.4

Magnesium 2440 mg/L 1.0 88 70 130 20 0.2

Phosphorus 9.81 mg/L 0.16 96 70 130 20 1.1

Potassium 758 mg/L 1.1 80 70 130 20 1.4

Sodium 1420 mg/L 3.2 96 70 130 20 0.8

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

Report Date: 06/16/10

Analyte Count Result %REC Units RL Low Limit High Limit RPDLimit RPD Qual

Method: E300.0 Batch: R132791

Sample ID: LCS 2 Laboratory Control Sample Run: IC1-C_100514A 05/14/10 16:49

Chloride 9.83 mg/L 1.0 98 90 110

Sulfate 38.4 mg/L 1.0 96 90 110

Sample ID: MBLK 2 Method Blank Run: IC1-C_100514A 05/14/10 17:20

Chloride 0.8 mg/L 0.01

Sulfate ND mg/L 0.06

Sample ID: C10050358-002CMS 2 Sample Matrix Spike Run: IC1-C_100514A 05/15/10 01:18

Chloride 207 mg/L 1.0 95 80 120

Sulfate 411 mg/L 1.0 104 80 120

Sample ID: C10050358-002CMSD 2 Sample Matrix Spike Duplicate Run: IC1-C_100514A 05/15/10 01:33

Chloride 205 mg/L 1.0 91 80 120 20 1

Sulfate 410 mg/L 1.0 104 80 120 20 0.1

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

Report Date: 06/16/10

Analyte Count Result %REC Units RL Low Limit High Limit RPDLimit RPD Qual

Method: E353.2 Batch: R132820

Sample ID: MBLK-1 Method Blank Run: TECHNICON_100517A 05/17/10 16:16

Nitrogen, Nitrate+Nitrite as N ND mg/L 0.04

Sample ID: LCS-2 Laboratory Control Sample Run: TECHNICON_100517A 05/17/10 16:18

Nitrogen, Nitrate+Nitrite as N 2.48 mg/L 0.10 99 90 110

Sample ID: C10050356-001BMS Sample Matrix Spike Run: TECHNICON_100517A 05/17/10 16:33

Nitrogen, Nitrate+Nitrite as N 2.09 mg/L 0.10 98 90 110

Sample ID: C10050356-001BMSD Sample Matrix Spike Duplicate Run: TECHNICON_100517A 05/17/10 16:36

Nitrogen, Nitrate+Nitrite as N 2.08 mg/L 0.10 98 90 110 10 0.5

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

Report Date: 06/16/10

Analyte Count Result %REC Units RL Low Limit High Limit RPDLimit RPD Qual

Method: E903.0 Batch: RA226-4529

Sample ID: C10050372-001CMS Sample Matrix Spike Run: BERTHOLD 770-1_100514A 05/24/10 16:11

Radium 226 16 pCi/L 101 70 130

Sample ID: C10050372-001CMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770-1_100514A 05/24/10 16:11

Radium 226 18 pCi/L 113 70 130 26.1 11

Sample ID: MB-RA226-4529 3 Method Blank Run: BERTHOLD 770-1_100514A 05/24/10 22:06

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 Laboratory Control Sample Run: BERTHOLD 770-1_100514A 05/24/10 22:06

Radium 226 8.7 pCi/L 111 70 130

Method: E903.0 Batch: RA226-4533

Sample ID: C10050346-001EMS Sample Matrix Spike Run: TENNELEC-3_100518B 05/24/10 20:54

Radium 226 12.5 pCi/L 62 70 130 S

- Spike response is outside of the acceptance range for this analysis. Since the LCS and the RPD for the MS MSD pair are acceptable, the response is considered to be 

matrix related. The batch is approved.

Sample ID: C10050346-001EMSD Sample Matrix Spike Duplicate Run: TENNELEC-3_100518B 05/24/10 20:54

Radium 226 11.9 pCi/L 58 70 130 17.1 4.7 S

Sample ID: MB-RA226-4533 3 Method Blank Run: TENNELEC-3_100518B 05/24/10 20:54

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 Laboratory Control Sample Run: TENNELEC-3_100518B 05/24/10 20:54

Radium 226 7.8 pCi/L 98 70 130

Method: E903.0 Batch: 26121

Sample ID: C10050312-001AMS Sample Matrix Spike Run: TENNELEC-3_100520F 06/02/10 15:49

Radium 226 12 pCi/g-dry 115 70 130

Sample ID: C10050312-001AMSD Sample Matrix Spike Duplicate Run: TENNELEC-3_100520F 06/02/10 15:49

Radium 226 12 pCi/g-dry 106 70 130 19.6 6.4

Sample ID: LCS-26121 Laboratory Control Sample Run: TENNELEC-3_100520F 06/02/10 15:49

Radium 226 1.5 pCi/g-dry 99 70 130

Sample ID: MB-26121 3 Method Blank Run: TENNELEC-3_100520F 06/02/10 15:49

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 concentration

Page 20 of 25
Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation

Work Order: C10050360

QA/QC Summary Report

Report Date: 06/16/10

Analyte Count Result %REC Units RL Low Limit High Limit RPDLimit RPD Qual

Method: E907.0 Batch: 26121

Sample ID: C10050312-001AMS Sample Matrix Spike Run: EGG-ORTEC_100520B 05/24/10 09:03

Thorium 230 8.74 pCi/g-dry 117 70 130

Sample ID: C10050312-001AMSD Sample Matrix Spike Duplicate Run: EGG-ORTEC_100520B 05/24/10 13:19

Thorium 230 8.66 pCi/g-dry 140 70 130 45 0.9 S

- Spike response is outside of the acceptance range for this analysis. Since the LCS and the RPD for the MS MSD pair are acceptable, the response is considered to be 

matrix related. The batch is approved.

Sample ID: LCS-26121 Laboratory Control Sample Run: EGG-ORTEC_100520B 05/24/10 13:19

Thorium 230 0.500 pCi/g-dry 104 70 130

Sample ID: MB-26121 6 Method Blank Run: EGG-ORTEC_100520B 05/24/10 13:20

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 concentration

Page 21 of 25
Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation

Work Order: C10050360

QA/QC Summary Report

Report Date: 06/16/10

Analyte Count Result %REC Units RL Low Limit High Limit RPDLimit RPD Qual

Method: E909.0M Batch: PB-210-0708

Sample ID: C10050383-001AMS Sample Matrix Spike Run: PACKARD 3100TR_100525A 05/29/10 00:31

Lead 210 108 pCi/g-dry 103 70 130

Sample ID: C10050383-001AMSD Sample Matrix Spike Duplicate Run: PACKARD 3100TR_100525A 05/29/10 02:34

Lead 210 135 pCi/g-dry 129 70 130 16.4 23 R

- The RPD for the MSD is high. However, the individual spike recoveries are within range therefore the batch is approved.

Sample ID: MB-26109 3 Method Blank Run: PACKARD 3100TR_100525A 05/29/10 04:38

Lead 210 ND pCi/L U

Lead 210 precision (±) 10 pCi/L

Lead 210 MDC 20 pCi/L

Sample ID: LCS-26109 Laboratory Control Sample Run: PACKARD 3100TR_100525A 05/29/10 08:45

Lead 210 470 pCi/L 90 70 130

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 concentration

Page 22 of 25
Project: Pinon Ridge Mill

Client: Energy Fuels Resources Corporation

Work Order: C10050360

QA/QC Summary Report

Report Date: 06/16/10

Analyte Count Result %REC Units RL Low Limit High Limit RPDLimit RPD Qual

Method: RA-05 Batch: 26121

Sample ID: LCS-26121 Laboratory Control Sample Run: TENNELEC-3_100520E 05/27/10 16:42

Radium 228 1.2 pCi/g-dry 84 70 130

Sample ID: MB-26121 3 Method Blank Run: TENNELEC-3_100520E 05/27/10 16:42

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 Sample Matrix Spike Run: TENNELEC-3_100520E 05/27/10 16:42

Radium 228 6.4 pCi/g-dry 88 70 130

Sample ID: C10050360-009AMSD Sample Matrix Spike Duplicate Run: TENNELEC-3_100520E 05/27/10 16:42

Radium 228 5.9 pCi/g-dry 82 70 130 34 7.8

Qualifiers: 

RL - Analyte reporting limit. ND - Not detected at the reporting limit.

MDC - Minimum detectable concentration U - Not detected at minimum detectable concentration

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 the Piñon Ridge Mill 

The purpose of this calculation brief is to compare the activity of radium-226 expected to be in the 

raffinate to that in the background surface soil per unit volume at the proposed Piñon Ridge Mill. Using 

available data, the radium-226 activity per cubic meter of raffinate and surface soil were calculated for 

comparison. 

The expected radium-226 activity in the raffinate is 234 ρCi/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 105 ρCi/m3

 using a 

conversion factor of 1,000 L/m3. 

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/m3) 

Average 

Ra-226 Activity 

(pCi/m3) 

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 ρCi/g and 

average 1.5 ρCi/g. Although these locations are biased, they are generally consistent with randomly 

located surface soil samples collected at locations across the site that range from 0.13 to 4.6 ρCi/g and 

average 1.1 ρCi/g. Conversion of the surface soil activities required an estimated density of the soil. A 

value of 1,600 kg/m3 (2,700 lb/yd3) was used based on the bank density of dry, loose sand (CAT 2006). 

The average radium-226 activity per cubic meter of soil was estimated to be for the 2.4 x 106 ρCi/m3

(based on 1.5 ρCi/g). 

The relative difference in radium activity by volume in the background surface soil to the raffinate is 

approximately 10:1. 

References

Caterpillar (CAT) 2006. Caterpillar Reference Handbook, page 27-4. April. 

Energy Laboratories Inc. (ELI) 2010. Analytical Summary Report, Workorder 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 Rogers from John Litz regarding 

Preparation of Raffinate Samples. June 1.