DRC-2009-000704 - 0901a06880107165

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DENISOI^i
MINES
Denbon Mbws (USA) Cop.
1050 irtti Street, Suita 9M
Denver, CO 8036S
USA
Tel: [phone]
Fax: [phone]
www.deRi8onmines.coin
February 27, 2009
Sent Via Federal Express
Mr. Dane Finerfrock
Executive Secretary,
Utah Radiation Control Board
Utah Department of Environmental Quality
Division of Radiation Control
Salt Lake City, Utah 84114-4850
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. <s, hd^i'- •" itf J
Dear Mr. Finerfrock:
Re: State of Utah Radioactive Materials License No. UTI 90047
White Mesa Mill, Blanding Utah
Semi-Annual Effluent Report (July 1, 2008 through December 31, 2008)
As required by Utah Administrative Code, R 313 24-4 (incorporating by reference 10 CFR 40.65
(subpart 1), and License Condition 11.3 A of Utah Radioactive Materials License UTI 900479,
enclosed is the semi-annual effluent monitoring report for the White Mesa Mill for the Period
July 1, 2008 through December 31, 2008.
Ifyou should have any questions regarding this report, please contact Mr. David Turk at (435)
678-2221 or myself at [phone].
Yours very truly,
DENISON MINES (USA) CORP.
Steven D. Landau
Cc Ron Hochstein
Harold Roberts (w/o attachments)
David Frydenlund
David Turk
Osnison Mnss USA Corp
DENISO IA
MINES T303fl
Fax3033$54125
awwaaunnam
February 27 2009
Sent Via Federal Express
Mr Dane Finerfrock
Executive Secretary
Utah Radiation Control Board
Utah Department of Environmental Quality
Division of Radiation Control
Salt Lake City Utah 84114-4850
Dear Mr Finerftock
Re State of Utah Radioactive Materials License No UT 190047-White Mesa Mill Blanding
Utah
Semi-Annual Effluent Report July 2008 through December 31 2008
As required by Utah Administrative Code 313 24-4 incorporating by reference 10 CFR 40.65
subpart and License Condition 11.3 of Utah Radioactive Materials License UT1900479
enclosed is the semi-annual effluent monitoring report for the White Mesa Mill for the Period
July 2008 through December 312008
If you should have any questions regarding this report please contact Mr David Turk at 435
678-2221 or myself at 303 389-4132
Yours very truly
ENISON MINES LISA Corn
Steven Landau
Cc Ron Hochstein
Harold Roberts w/o attachments
David Frydenlund
David Turk
BH
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64004ATIONAL URMOIUM 000PORATI00
00475 010 20 10 LI
NOOIONT AIR 104I06uGL100 PMTIOLLATES
105.56 647
570100
000-0
7000550.0000.0 III 0-id 354 441
U00M400600 NAT
GROSS 110
C40 .400ou 010-Ill IOPO
107010101-230
GROSS 701011740 LID
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431 470 eJ 5/4
RADUIA 300
GROSS 00111300 LID 3000uCs0R700lIo0i57
LEAD 20
GROSS COUNTING 100 10
COlIC uGA 110.10 MPC
20-Sop-El 2.350-IS SE-I .I.70S-o2
l4Coo0I SOS-is 54.1 3.120-02
29-M-62 116545 OSlO 4325.82
30-Jul42 4005.10 15-16 430542
27-Sop-so 4455-IS 040 0400.02
2-Jal83 4.308-IS 5507 8745-fl
44p403 7.51018 52.17 1505-02
30-J.si.03 2180.15 04.17 5380-03
3-Oct-83 01805 tAll
3S94 107045 10-10 574043
25Apr04 SOS-IS 50.67 5.505-02
2.Ji4-00 3.118-11 OS-IT 20542
1.05144 0420.18 50-i 0.24002
1-JeilS 5.000-16 54-il 1.51002
1-Sp--80 5002000 55-lI 005.03
0-3-4-04 7170IS SO-iT .43442
30-54040 5.130-Is 54.10 123S42
2-JopM 342416 10-14 6045-02
I-A04$6 3.08045 2048 700403
304qo-00 5.570-07 10-17 1.16543
27-05138 1.00045 20-Il 3.84602
IS-Dot-a 1.67045 38.15 134002
11-5.0.0-07 2.33045 30-16 4.15402
11.8410.07 2200.15 5540 4726-01
0-Sep-a 1270-IS 10-10 4.540-00
241-87 2.75045 10.17 4504.02
5-0.6-80 0870-iS 50.10 2145-02
1011y-OS 0.060-15 3010 3.065-02
15.050-40 2.000-iS 3570 413542
O44loi_.0S 2.64065 30-70 084E02
15-Feb48 056041 90.57 300042
Il-380p05 1.500-IS 75-18 3-100.02
14-040-00 1310-IS 20-00 4.020-02
62495.40 4.720-IS 2047 0445-02
12.5.6-00 3.4-IL-Is 86-08 0.080-03
14401743 3020.10 245 0.06402
03-455-00 040-is 14.10 328542
1341000 1.455-IS ISIS 300502
104o641 0.50016 10-16 3.00003
13-1817-lI 342044 00.60 0.84043
i2-Auo-0I 2.770-Is 10-IS 0.54043
1.05.0 0000-17 00.16 33543
10-Feb42 1540-16 10.10 3.60043
li-Muy-02 1245-50 10-10 508043
I0-Aug-44 073516 20.10 3.08043
0-60093 1.500-16 35-16 2543
0445-02 00-00 10-15 620043
104100_SI 0000606 35.10 000042
0-450.03 2.30546 20-Il 400003
8-NaOS 060060 20-10 0060.06
7-7th-SI 1.520-IS 30-lI 2030.01
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0-04044 4040.18 I016 4730-0
7.Nos.04 0.100-il 10-10 1.530-01
7-FIb-OS 1770-Is 10-10 3.050.0
O4Iay-0I 0446-17 15-22 1570.01
0-4445 2700.10 iO16 410001
lIIoi-05 4600-IS 10-Il 0005600
3-Feb-60 1340.10 10-10 6.00042
0-18.480 5115-18 0-06 412041
5-Aug.06 1000-Il 15-16 0.08001
0410400 3.386-Il 10-10 0.02041
6Feb07 1850-iS 10-10 1.67041
5-1807-07 1.060-Il IS-Il 020.01
11Aug47 1800-IS 240 4805.01
14t.84 7.240-10 10-10 0408.01
25-Apr-86 4.21810 15-10 7.02400
31-3480 8.84010 15.10 00200
78-S.c-OS 2810-16 05-10 12041
20-Dot-sO 4086-Il 10-IS 007040
20-Mario 1060-16 10.10 7105-01
341441 6.370-70 10-18 5600.01
27-Sop41 4000-Is 10.10 7.8704
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27-MtsoO 51000-IS 20-IS 61.11041
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36-040-06 2410-10 10-IS 2.70041
350o0-00 41.10018 1010 0.06006
3644w.0I 3100-18 5-10 3.400-01
20414-01 1.020-10 0-00 1.00001
24.Ooa-Oi 1030.10 576 10001
21-00501 41065.10 ISIS 11.11041
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1-31802 3.55010 iE10 3.84001
20-2.p42 1150.10 1640 204.01
2400542 si.O40-16 IS-IS 1010-01
31-14ar-03 1.20610 SW 1.33501
140-il SE-IS 2.41001
29Sep92 41.080-10 IS-Is 41.010-01
200sc43 1060-10 10.16 41010-01
20456.04 1.000-10 16.10 11001
27-Jai.04 01.00410 16.10 4101001
27-5op44 3.070-is 16.10 1.11041
27-001-04 1.005-10 8-10 1.11040
30-IAwS 01000.10 00.10 1110-01
flJoo4S 1.000.18 17.10 4111041
38-SooOS i0OE-I0 10-10 1.11041
3-Jot-00 2.120-01 10.10 2.27041
3OpoOO 6.02540 00-Is 1.05041
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02-010-00 1.OOEIO 10-16 II 0-i
71.36647 2080100 10-IS 3200-01
250pe47 523410 10-Il 2.6854
3-3447 3250-10 10I5 3720.05
30-Sep47 1.154-10 10.10 710.01
30-000-07 1000-16 iS-lI 300541
31-Mar-06 1100.10 10-Il 1.26401
506545 7100.00 14.10 78800
30-Sop-OS 1060-10 14-10 05-80-01
31-0ep-00 700 II 10I5 .300000
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1.444-IS 2150.16 10-10 4070-01 1034-15 3740-i8 0.16 000042
3.820-IS 1.150-10 30-IS t77041 1.100-15 1700-10 90-IS 140042
340040 2240-30 10-17 050000 530015 4.770-14 10-10 1.18041
1200-05 4.75045 1010 1.140000 8230-IS 401015 10-10 1.02041
5.810-70 3-10-20 75-li 1.078-01 5140-Il .030Il 66-I 4.57042
2.130-06 3050-17 70-Il 10042 3205.11 0020-17 00-I .00044
6670-70 .320.00 0047 240001 7.535-Il 1324.16 0-10 3.06042
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3.400-18 1410.18 30-67 1.120-01 3.71500 180017 70-I 18042
1.070-iS 7.500is 30-05 3330.01 2.500-IS 2.21016 10.10 1.050-01
1500-16 1170-10 70-It 4.030-02 1040-08 1.11010 80-77 8.70003
4540IS 2.200-10 20.10 0020-07 2.400-68 1.320-Il 10-Il 071042
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080000 4.70414 10I6 7.00003 005045 1.100-Il 7047 3200-03
1.100-16 1.154-1010-i 2.07042 3.110-IS 0740-li 78.07 120042
4.74018 40170 20-Il 1560.01 V00i 085000 20-Il 0388101
4745-is 2.750-Is 10-Ia 3.250-01 1.400-68 5070-IS 40-IS 711042
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1.230-75 1.00016 10.57 4.17001 4400-Il 7.705-I 1017 702
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8.13417 3.000-17 26-17 204042 1770.07 2.005-67 85-57 1.30042
426S-I 3045-i 20.1 143543 4.28017 3.300-IT 20-07 2040.02
3410-10 5.060-I 20-IS 110041 0010-17 4000-i 20-67 1430.03
556-Il 46004 40-10 5.17043 370-Il 4000-07 20-14 6.00043
3.12417 2.100-I 10-10 1.00042 4005-Il 1200.07 35-il 3.42144
0.100604 lOSS-Il 40-Il 0.000000 3075-IT 7.200-il 30-IS 0050.03
4.110-I 3.0000 80-Il 137042 6.420-li 4.000-i 30-li 3.22003
0000-I 5000-0 40-IS 103201 8.437-IT 8140-17 20-10 122043
0.000600 0.005-I 4040 0000600 060003 1.005-iS 2518 0005003
5.008-Il 4065-17 40-10 1.07842 4310-17 1600.16 34-Il 78S43
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2700-10 0.71047 10-06 5200-71 204040 10104 10-10 247042
3.800-Il 4435-07 10-14 1200.00 2010.10 2410-I 10-Il 3.23642
0700.77 0000-16 10.50 3730.06 0700-17 1600.10 10-il 000.07
0380-Il 4.205-I Oil 3765000 1.600-IS 0.175-I IS-Il 1.74441
1.000-Is 1000.17 00-16 523041 2364.10 4.005li 12-10 3.075-03
0.410-10 5.750-07 20-10 114000 4.034-IS 4.240-Il 20-00 002642
2380-IS 0200-IS IS-il 7.570-00 1.30446 7.005-Il 0-Il 3104i
2060-16 2.00047 10-16 .03000 420-16 0.070-lI 10-Il 0.06042
050-IS 7650-17 10-16 0070-00 2025.00 2536-I IF-Il 226501
5.45-is 4610.17 1010 .020600 0000-10 700 10-Il 111041
1.250-Il 1470-I 10-iS 417041 0206-00 1.540-I 00-10 0472.02
0000.05 40 iS-IS 3.33001 1800-iS 704 10-Il 110.01
3.630-16 4.140-i 10.16 215003 1435.10 1400.171 0-66 202042
3400.16 00 10-Il 1.10542 1.110-iS 700 10-Il 0.33002
73410 1140-17 10-Il 225000 5060-IS 4.00047 15-16 032002
1.038-15 0400 10-Il 442042 1435-15 8000.67 1018 100041
1006-It 257017 10-Il S14041 1.000-IS 967040 10-35 2000.02
4.030-IS 2420-I rn-Il 1.64042 1010.10 3620-17 10-iS 5.67042
2.06510 1.540-I lOll 8.00641 1.120-10 7620.18 10-jO 118042
2.470-Il 64047 10.11 024041 1235-IS 3200-17 10-14 3.41002
2000-Il 3.740-17 0-70 350.00 1060-Il 3.100-17 10-IS 3180.02
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1002.10 1.120-1110 16 305001 41060.10 000 10-IS 1.11002
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LOCATION
50000165.020-1010-IS1500-010.400-10
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2-0747300-TO10-IC050-01alSo-IS
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omiovoe1.080-ISlESt-20004006020-IS
30.300-Os4010-IS10-TO5.350000125-IS
314300-084.00045IS-Il53404001.700-IS
707000
0043
U047411J1o1NAT
GROSSLtD
001Caco416.060UPC
GROSS
0004050-N
100013-14-
C00.00IIN0
501000
238
LLO
110401
3-
MOO
GROSS
00005850
000001
001011150
00000
353
LtD
I0050I
3-
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GROSS
0040570
000
COUNTING
ERROR
-210
LW
016.101
3-
MPG
22-S003030-10ale33001002370550005-lIIS-IS4.575000.715-180.23617lOll6600421.550-753-010-180-0034100
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20-JoI-S0400-ISIS-Il6000417.520-181010-iT10.10.2650000.105-10ISlE-IS-IS0704-024.035-IS1020-IS10-IS 3-000-00
25-SopOO3755-TO10.104176012270-004230-1710-107.446011.015-il2.005-I00-103-110020.410154510.10OSlO1.010400
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24-145-011000-1010-Il3.410411.015-OS1016-IT5.103-375411770-181035-IT10-18070026040.5730-Il15-It1.43000
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I-JoO-021.005Il10-104050414.416-IS4.1001715.101.4701001.755-101.200-IT10-101.000420206-IS055-Il0201.370o00
2O-SopO23-050-IS16-Il4.005-015006-104-IS-ITIS-IS I.l7000.000-IS1.100-IT10-102.006425.150-IS.106-Il10405.20040
30-0.0-0207000-18IS-IS110-013430-003475-ITISISLIIEIOO1075-Il1.530-IT10-100.850410.355-141006-1006.002.24000
31Mac031000-1010-IS2.205011000.102.100-IT40-Il502040100808WA16-1001110027770IS1.400101010.700100
30-Jul-031554810-IS0.338011.105-101.000-IliS-It103542NI080-IS05010-iS1110-035978-IS340-ISlOIS0.07001
20-805-0341.000-1010-101.110-0111.005-IlNSA10-IS41110-02II00018WA101l 1716-02 0350IS030-It1018 130010
26406431000-ISIS-IS1010411300103-045-1715.114504001.005-ISWA10-Id41.11002l-IS010-IS10-101.116-00
20Mw-0411.001_iS10-1011110-01000-10005010-Il33100241008-10WAIS-1004116023-070452.205-Il0-la.30000
27-0t6441.000-101515 111001110601103010-Il33300711.000-18WA10-101110423150-157210-1010.155015-01
37805-541606-10 ISIS1601300-101000-I15-014.508-01.055-ISWA10-1001110-021.050lI7.226-1020- IS2.03500
fl-000Ol.050ISIF-IS1000-011110.101750-5715-105704.006-10WA10-IS1110-021520-141.0562010-IS254000
10-0504151.606-IS15-101110411000-10WAIF-IS43330021000-ISIOtAIF-IS41110020345450.030-Il10-150.10500
10-asoOS230-IS00401.470011.110-102.005-IIl-Il34141410FF-IaWA540 1110030030450.050.IS20-IS.000000
20-005OS540_tO00to3000-Cl5005-100010-I10-102.0000550103-070.1710.103.08642710-1400-1010-IS2.040100
3J5.007075-IS10-IS 0.530-011080-104.086-27os-oS600012600-151835-IS10-104.606014050-140.008-2625-IS t.000101
3-840-002020-2010-IS 3.140-012.000-102.070-25540 070010600-10WA10-10.116-010.116-142.5201526-IS1050000
3-10-053250-2015-iS 3015-Si1010-1710-0001i403045-lI10-10300071.100-144w-ISISIS.03000
330617100.570-011.100-IS0.1SF-IT10-Il.332421130-IS1.015-IS10-IS3050-01
30401715-Il0.310-01 51.000-10NA11110431700-145.170-2025-IS2.04000
1164715-TO140040011.00010NA10I1411100214301410400020.10239000
5.7404
3-500-07
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10-153-316-41
740-IS
110-it
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J5.70__1.720012.04044
10-IS11.1104210300-IS
7420_IS
3-552-IS
.20z15_
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1.40004
1.000000
1.305-IS
1300-57
517000
10-181.170100
314840
10.10
0305-lI
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0451510020100-IS
10-1011.1104210008.10
2.770-10
1.040-10
20.10
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1.030000
500081
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1.04017
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10100000000
1.04010
1.150-IS
205017
0500-27
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5.101410.011000-14
3-730.10
2410-10
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124040
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EIERGY
LALO/AiO//E5
ENERGYLABORA TORIES INC 2393 Sail CreekHihway 8260 AC Box 3258k Caspec WY82602
roll Free 889235.0515 307235.0515 Fax [phone] caspenenergy/ab.com wwwenergylab.com
ANALYTICAL SUMMARY REPORT
December 05 2008
Denison Mines USA Corp
6425 Hwy 191
Blanding UT 84511
Workorder No COOl 00264
Project Name 3rd Quarter Environmental Air
Energy Laboratories Inc received the following samples for Denison Mines USA Corp on 10/7/2008 for analysis
Sample ID Client Sample ID Collect Date Receive Date Matrix Test
C08100264-001 BHV-1 07/01/08 0000 10/07/08 Filter Composite of two or more samples
Metals Total
Digestion Total Metals
Lead 210
Radium 226
Thorium Isotopic
C08100264-002 BHV-2 07/01/08 0000 10/07/08 Filter Same As Above
C08100264-003 BHV-4 07/01/08 0000 10/07/08 Filter Same As Above
C08100264-004 BHV-5 07101/08 0000 10/07/08 Filter Same As Above
C08100264-005 BHV-6 07/01/08 0000 10/07/08 Filter Same As Above
C08100264-006 Blank 09/29/08 0000 10/07/08 Filter Same As Above
As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the
QNQC Summary Report or the Case Narrative
If you have any questions regarding these tests results please call
Report Approved By
STEVE CAELSION
Summary Report Page of
ENSRGY
LALIORA TORIES
ENERGYLASORA7VR/ff$INC 2393 Salt Creek Highway 82601 P0 Box 3258 Caspe4c WY82602
Toll Free 888.235.O515 307235.0515 Fax [phone] [e-mail] www.energylab.com
fflGfl OLUME AIR SAMPLING REPORT
CLIENT DENISON MIIiES
REPORT DATE December 52008
PROJECT 3rd Quarter 2008 Environmental Air Sampling
SAMPLE ID BHV-1
QuarterIDate Sampled
Volume
Air
C08040302-O01
First Quarter 2008
Air Volume in mLs
1.36EI
Quarter/Date Sampled Air
Volume
C080701 12-00
Second Quarter 2008
Air Volume in mLs
1.24E1
Radionuclide
3tu
Concentration
gCi/mL
1.14E-16
.13E-16
1.OOE-16
6.44E-15
Error
Estimate
uCi/mL
N/A
L.L.D
MC1/mL
1.OOE-16
1.OOE-16
1.OOE-16
2.OOE-15
Effluent
Conc
itCi/mL
9.OOE-14
3.OOE-14
9.OOE-13
6.OOE-13
Effluent
Concentration
1.26E-01
3.76E-01
1.1 IE-02
.07E00
2301b
226Ra
210Pb
2.63E-17
N/A
3.8 IE-16
Error
Estimate
jzCi/mL
Effluent
Conc
itCi/mL
Radionuclide
tu
2301h
6Ra
210Pb
Concentration
MCilmL
7.09E-16
3.83E-16
2.27E-16
6.52E-15
N/A
1.03E-16
3.46E-17
4.78E-16
L.L.D
ptCilmL
1.OOE-16
1.OOE-16
1.OOE-16
2.OOE-15
9.OOE- 14
3.OOE-14
9.OOE-13
6.OOE-13
Effluent
Concentration
7.88E-0
1.28E00
2.53E-02
1.09E00
Quarter/Date Sampled Air
Volume
Radionuclide
Concentration
FCi/mL
Error
Estimate
gCi/mL
LL.D
pCi/mL
Effluent
Conc.s
pCi/mL
Effluent
Concentration
C08100264-001
Third Quarter 2008
Air VolumeinmLs
l.36E11
natU 7.69E-16 N/A 1.OOE-16 9.OOE-14 8.54E-01
230Th 2.94E-16 2.225-18 1.OOE-16 3.005-14 9.805-01
Ra 1.905-16 4.30E-17 1.OOE-16 9.005-13 2.115-02
21Pb 7.645-15 4.16E-16 2.005-15 6.005-13 1.27500
LLDs are from Regulatory Guide 4.14
Effluent Concentration provided by Denison Mines
ENTRGY
LABORATORIES
ENERO VLABORA TORIES INc 2393 Sail Creek Hi/iway 82601 Pa Box 3258 Caspe1c PVV82602
Toil Free 888.235 0515 307235 0515 Fax-307234.1639 caspenPenergy/ab.com wwwenergy/ab.corn
LABORATORY ANALYTICAL REPORT
Client
Project
Lab ID
Client Sample ID
Denison Mines USA Corp
3rd Quarter Environmental Air
C081 00264001
BHV-1
Report Date 2/05/08
Collection Date 07/01/08
DateReceived 10/07/08
Matrix Filter
MCI
Analyses Result UnIts Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium
Uranium Activity
0.155 mg/filter
105 pCi/Filter
0.0006
0.4
8W6020 11/07/08 1413ts
SW6020 11/07/08 1413ts
RADIONUCLIDES TOTAL
Lead 210
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
1040
30
30
27.4
3.5
2.4
40
0.76
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
11/10/08 1045dm
11/10/08 1O45/dm
11/10/08 1O45/dm
11/09/08 1400 evm
11/09/08 1400 evm
11/09/08 1400evm
11/03/06 1545 /dmf
11/03/08 1545 Idmf
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MDC Minimum detectable concentration
MCL Maximum contaminant level
ND Not detected at the reporting limit
RI increased due to sample matrix interference
0.20
ENERO YLABORA TORIES INC 2393 Sail Creek Hiqhway 82601 P0 Box 3258w Casper WY82602
Toll Free 888.235.0515 307235 0515 Far 307234 1639 casperenergy/ahcom wwweaergy/ab.comEISERGY
LA/ORA TOP/ES
HuGE VOLUME AIR SAMPLING REPORT
CLIENT DENISON MINES
REIORT DATE December 52008
PROJECT 3rd Quarter 2008 Environmental Air Samphng
.1 SAMPLE.ID BRV4
Concentration
tCi/mL
1.00E-16
.00E-16
.OOE-16
6.49E-15
Error
Estimate
sCi/mL
N/A
N/A
N/A
4.51E-16
LLD
ttCi/mL
.00E-16
.00E-16
I.00E-16
2.00E-1
Effluent
Cone
LtCi/mL
9.00E-14
3.00E-14
9.OOE-I
6.0011-13
%Effluent
Concentration
1.1111-01
3.3311-01
1.1111-02
.081100
Quarter/Date Sampled Air
Volume Radionuclide
Concentration
ttCi/mL
Error
Estimate
pCI/mL
LL.D
pCi/mL
Effluent
Conc
sCi/mL
Effluent
Concentration
C08100264-002
Third Quarter2008
Air VolumeinmL
l.25E11
tU 2.3711-16 N/A 1.0011-16 9.0011-14 2.6311-01
23Th 1.0011-16 N/A 1.0011-16 3.0011-14 3.33E-0l
226Ra 1.0011-16 N/A 1.0011-16 9.0011-13 1.1111-02
210Pb 8.3011-15 4.1511-16 2.0011-15 6.0011-13 1.381100
Quarter/Date Sampled Air
Volume
C08040302-002
First Quarter 2008
Radionuclide
flatu
Error
Estimate
ttCi/mL
230rh
AirVolume in mL
1.37El1
226R4
LLD
pCi/mL
N/A
Effluent
Conc
aCi/niL
2Pb
Quarter/Date Sampled
Volume
N/A
1.0011-16
Air
.0011-16
9.0011-14
N/A
3.8211-16
Radionuclide
3.0011-14
1.0011-16
2.0011-15
9.0011-13
C080701 12-002
Second Quarter 2008
AirVolume in mL
1.341111
Concentration
pCi/mL
flatu
6.0011-13
230fh
1.29E-16
226R.a
1.OOE-16
2t0Pb
1.0011-16
Effluent
Concentration
4.8211-15
1.4311-01
3.3311-01
1.1111-02
8.0311-01
LLDs are from Regulatory Guide 4.14
Effluent Concentration provided by Denison Mines
EtERGY
LARORA TORIES
ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 8260 P0 Box 3258 Caspe.c WV82602
Toil Free 888.2350515 307.235.0515 Fax [phone] caspenenergy/ab.com www.energylab.com
LABORATORY ANALYTICAL REPORT
Client
Project
Lab ID
Client Sample ID
Denison Mines USA Corp
3rd Quarter Environmental Air
C081 00264-002
BHV-2
Report Date 12/05/08
Collection Date 07/01/08
DateReceived 10/07/08
Matrix Filter
TRACE METALS
Uranium
Uranium Activity
0.0445 mg/filter 0.0006
30.1 pCi/Filter 0.4
SW6020 11/07/08 1423/ts
SW6020 11/07/08 1423 ts
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
1040 pCi/Filter
30 pCi/Filter
30 pCi/Filter
11.5 pCi/Filter
2.6 pCi/Filter
2.6 pCi/Filter
8.8 pCi/Filter
0.38 pCi/Filter
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
11/10/08 1045 /dm
11/10/08 1045/dm
11/10/08 1045/dm
11/09/08 1400/evm
11/09/08 1400 evm
11/09/08 1400 evm
11/03/08 1545 dm1
11/03/08 1545 dm1
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MDC Minimum detectable concentration
MCL Maximum contaminant level
MCL/
Analyses Result units Qualifiers RL QCL Method Analysis Date By
RADIONUCLIDES TOTAL
Lead 210
0.20
ND Not detected at the reporting limit
RL increased due to sample matrix interference
LASOIt4 TORIES
ENERGYLABORA TORIES INC 2393 Sail CreekHii/iway 8260 P0 Box 3258 Caspet WV82602
Toll Free 888.235.0515 30Z235.O515 Fax [phone] casperenergy/ab.com wwwenergy/ab.com
HIGH VOUJME AIR SAMPLING RZPORT
CLIENT DENISON MINES
REPORT DATE December 5200ff
PROJECT 3rd Quarter 2008 Environmental Air Sainphng
.SAMflUD
Error
Estimate
itCi/mL
Effluent
Conc
tCi/niL
Error
Estimate
itCi/mL
Effluent
Conc
ttCi/mL
Quarter/Date Sampled
Volume
C08040302-003
First Quarter 2008
Quarter/Date Sampled
Volume
Aix
Air Volume inmL
1.36El1
Aix
C080701 12-003
Second Quarter 2008
AirVolume in mL
1.24El1
Radlionuclide
flatu
Z3UTh
Ra
210Pb
Radionuclide
flatu
Concentration
rtCi/mL
1.25E-16
1.006-16
1.006-16
4.096-15
Concentration
gCi/mL
1.286-15
7.726-16
3.616-16
18E-14
N/A
N/A
N/A
3.046-16
N/A
LLD
pCi/mL
1.006-16
.OOE-16
1.006-16
2.OOE-15
LLD
LCi/mL
.OOE-16
1.006-16
1.006-16
2.OOE-15
9.OOE-14
3.OOE-14
9.006-13
6.006-13
9.OOE-14
3.006-14
9.OOE-13
6.OOE-13
Effluent
Concentration
.396.01
3.33E-01
1.IIE-02
6.816-01
230Th
226p
210Pb
2.09E-16
4.306-17
5.73E-16
Quarter/Date Sampled Air
Volume Rathonuclide
Concentration
EtCi/mL
Error
Estimate
tCi/niL
L.LD
tCi/mL
Effluent
Conc
tCi/mL
Effluent
Concentration
C08100264-003
Third Quarter 2008
Air VolumeinmL
1.36E11
atU 2.726-15 N/A 1.OOE-16 9.OOE-14 3.02E00
Th 1.276-15 1.39E-17 1.006-16 3.006-14 4.23E00
226p 7.666-16 8.186-17 1.OOE-16 9.006-13 8.SIE-02
2t0Pb 1.1OE-14 4.726-16 2.006-15 6.006-13 1.83E00
Effluent
Concentration
1.42E00
2.57500
4.015-02
1.97500
LLDs are from Regulatory Guide 4.14
Effluent Concentration provided by Denison Mines
ENIRGY
LAL3ORA TORIES
ENERO YLASORA TORIES INC 2393 Salt Creek Hiq/iway 82601 PC Box 3258 Caspet WV82602
Toll Free 888.235.0515-307235 0515 Fax [phone] casperenergylab.corn www.energylab.com
Client Denison Mines USA Corp
Project
Lab ID
Client Sample ID BHV-4
LABORATORY ANALYTICAL REPORT
Report Date 12/05/08
Collection Date 07101/08
DateRecelved 10/07/08
Matrix Filter
MCLI
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium
Uranium Activity
0.547 mg/filter
371 pCi/Filter
0.0006
0.4
SW6020 11/07/08 1450 /ts
SW6020 11/07/08 1450 Its
RADIONUCUDES TOTAL
Lead 210
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
1500
34
30
106
6.3
2.2
173
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
11/10/08 1045/dm
11/10/08 1045/dm
11/10/08 1045/dm
11/09/08 1400 evm
11/09/08 1400 evm
11/09/08 1400/evm
11/03/08 1545 /dmf
11/03/08 1545 /dmf
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MCL Maximum contaminant level
ND Not detected at the reporting limit
3rd Quarter Environmental Air
C081 00264-003
1.6 pCi/Filter
0.20
MDC Minimum detectable concentration RL increased due to sample matrix interference
ENERGYLAHORA TORIES INC 2393 Sail Creek Hq/iway 82601 P0 Box 3258 Caspe.WY82602
Toll Free 888.235 0515 307235 0515 Fai 307234.1539 caspeKEenergy/ab.com wwwenergylab.oom
EfERGY
LARORA TORIES
WOK VOLuME AIR SAMPLING REPORT
CLIENT DENISON MINES
REPORT DATE December 52008
PROJECT 3rd Quarter 2008 Environmental AirSampling
SAMPLE 13KV-S
Quarter/Date Sampled
Volume
Alt
C08040302-004
First Quarter 2008
Air Volume in mL
1.36E11
Radionudlide
2u
230rh
22%
21tPb
Concentration
sCi/mL
l6E-16
6.17E-16
3.70E-16
4.82E-15
Error
Estimate
jsCi/mL
N/A
4.26E-17
3.67E-17
1.75E-16
L.LD
pCi/niL
1.OOE-l6
1.OOE-16
.OOE-l6
2.OOE-lS
Effluent
Conc
pCi/niL
9.OOE-l4
3.OOE-14
9.OOE-13
6.OOE-13
Effluent
Concentration
3.51E-Ol
2.06E00
4.11E-02
8.03E-01
Concentration
pCi/mL
3.13E-l5
1.55E-15
9.27E-16
7.40E-15
Effluent
Concentration
3.48E00
5.1SE00
1.03E-01
.23E00
Quarter/Date Sampled Air
Volume Radionuclide
Concentration
pCi/mL
Error
Estimate
pCi/niL
LLD
pCi/mL
Effluent
Conc
pCi/niL
Effluent
Concentration
C08100264-004
Third Quarter2008
Air VolumeinmL
1.36Ell
fltU 7.08E-l5 N/A 1.OOE-16 9.OOE-l4 7.86E00
23Th 3.41E-15 1.98E-l7 1.OOE-16 3.OOE-14 1.14E01
226 2.52E-15 8.43E-17 1.OOE-16 9.OOE-13 2.80E-01
210Pb 1.15E-l4 2.56E 16 2.OOE-15 6.OOE-13 1.92E00
LIDs are from Regulatory Guide 4.14
Effluent Concentration provided by Denison Mines
Quarter/Date Sampled
Volume
Air
C080701 12-004
Radionuclide
Second Quarter 2008
flatU
Error
Estimate
rtcJirnL
230Th
Air Volume in niL
1.33E11
226
LLD
pCi/niL
N/A
Effluent
Conc
aCi/mL
21tPb
2.30E-16
1.OOE-16
4.20E-17
9.OOE-14
1.OOE-16
2.73E-16
3.OOE-14
1.OOE-16
2.OOE-15
9.OOE-13
6.OOE-13
EfSERGY
LABOR/I TORIES
ENERGYLABORA TORIES INC 2393 Sail Creak Hg/iway 82601 P0 Box 3258 Caspac 14/Y82602
Toll Free 888.235.0515 307235.0515 Fax [phone] casparenergylab.com www energy/alz corn
LABORATORY ANALYTICAL REPORT
Client
Project
Lab ID
Client Sample ID
Denison Mines USA Corp
3rd Quarter Environmental Air
C081 00264-004
BHV-5
Report Date 2/05/08
Collection Date 07/01/08
DateReceived 10/07/08
Matrix Filter
MCL
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium
Uranium Activity
1.43 mg/filter 0.0006
966 pCi/Filter 0.4
SW6020 11/07/08 1509 ts
5W6020 11/07/08 1509 ts
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
1570 pCi/Filter
35 pCi/Filter
30 pCi/Filter
346 pCi/Filter
11.5 pCi/Filter
2.3 pCi/Filter
466 pCi/Filter
2.7 pCi/Filter
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
11/10/08 1045/dm
11/10/08 1045/dm
11/10/08 1045/dm
11/09/08 1400 evm
11/09/08 1400 evm
11/09/08 1400/evm
11/03/08 1545 dmf
11/03/08 1545 dmf
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MDC Minimum detectable concentration
MCL Maximum contaminant level
ND Not detected at the reporting limit
RL increased due to sample matrix interference
RADIONUCUDES TOTAL
Lead 210
0.20
E/ERGY
LALIORA TORIES
ENERGYLABORA TORIES INC 2393 Sail Creek Hi/iway 8260 P0 Box 3258 Caspei WY82602
roll Free 888.235.0515 307235 0515 Pa 307234.1639 casperªenergy/ab.com www energy/a corn
ifiGil VOLUME Am SAMPLING REPORT
CLIENT DENISON MINES
REPORT DATE December 52008
PROJECT 3rd Quarter 2008 Environmental Air Sampling
SAMPLE ID BIIV-6
Quarter/Date Sampled Air
Volume
C08040302-005
First Quarter 2008
Air Volume in mLs
1.361311
Quarter/Date Sampled Air
Volume
C080701 12-005
Second Quarter 2008
Air Volume in mLs
1.331311
Quarter/Date Sampled Air
Volume
Radionuclide
Concentration
sCi/mL
Error
Estimate
pCi/mL
L.L.D
zCi/mL
Effluent
Conc
DCi/mL
Effluent
Concentration
C08100264-005
Third Quarter 2008
Air Volume inmLs
1.361311
4.8213-15 N/A 1.OOE-16 9.0013-14 5.351300
230Th 2.1013-15 1.54E-17 1.0013-16 3.0013-14 6.991300
226Ra 1.27E-15 6.5913-17 1.0013-16 9.0013-13 1.4113-01
21Pb 1.OOE-14 2.4213-16 2.0013-15 6.0013-13 1.671300
LLDs are from Regulatory Guide 4.14
Effluent Concentration provided by Denison Mines
Radionuclide
Concentration
zCi/mL
natu
Error
Estimate
tCi/mL
23O1
4.3413-16
226
L.L.D
sCi/mL
3.5113-16
N/A
Effluent
Conc
itCi/mL
210Pb
1.0013-16
3.3813-17
1.0013-16
Effluent
Concentration
5.99E-15
.OOE-16
N/A
9.0013-14
1.9413-16
Radionuclide
1.0013-16
3.0013-14
4.8313-01
2.OOE-1
9.0013-13
1.17E00
Concentration
pCi/mL
natU
6.0013-13
1.1113-02
Error
Estimate
aCiJmL
2301li
1.8813-15
9.9813-01
226Ra
L.L.D
gCi/mL
9.0013-16
N/A
Effluent
Conc
uCi/mL
2Pb
4.04E-16
1.4313-16
1.OOE-16
Effluent
Concentration
7.4 113-15
2.8513-17
1.0013-16
9.0013-14
2.7313-16
3.0013-14
1.0013-16
2.091300
2.0013-15
9.0013-13
3.001300
6.0013-13
4.4913-02
1.241300
ENERO VLABORA TORIES INC 2393 Sail Creek Hi/iway 8260 AC Box 3258 Caspe WY82602
Toll Free 888.235.0515 307235 0515 Fai 307234 1639 casperenergy/aAcom wwwenergylab.com
LABORATORY ANALYTICAL REPORT
Report Date 12/05/08
Collection Date 07/01/08
DateReceived 10/07/08
Matrix Filter
EtERGY
LALIORA TORIES
Client Denison Mines USA Corp
Project
Lab ID
Client Sample ID BHV-6
MCL/
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium
Uranium Activity
0.972 mg/filter 0.0006
658 pCi/Filter 0.4
SW6020 11/07/08 1530 ts
SW6020 11/07/08 1530 ts
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
1370 pCi/Filter
33 pCi/Filter
30 pCi/Filter
175 pCi/Filter
9.0 pCi/Filter
2.8 pCi/Filter
286 pCi/Filter
2.1 pCi/Filter
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
11/10/08 1045/dm
11/10/08 1045 /dm
11/10/08 1045/dm
11/09/08 14OOIevm
11109/08 1400/evm
11/09/08 1400 Ievm
11/03/08 1545 dmf
11/03/08 1545 /dmf
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MDC Minimum detectable concentration
MCL Maximum contaminant level
ND Not detected at the reporting limit
RL increased due to sample matrix interference
3rd Quarter Environmental Air
C081 00264-005
RADIONUCLIDES TOTAL
Lead 210
Lead 210 precision
Lead 210 MDC
0.20
E/ERGY
LAI3OR1 TORIES
ENERGYLABORA TORIES INC 2393 Sail CreekHIbway 82601 AC Box 3258 Caspe4c WY82602
Toil Free 888.235.0515 307235.0515 Fax [phone] caspenenergy/ab.com www.energylab.com
HIGH VOLUME AIR SAMPLING REPORT
CLIENT DENISON MINES
REPORT DATE December 52008
PROJECT 3rd Quarter 2008 Environmental Air Sampling
SAMPLE ID BLANK
Quarter/Date Sampled Air
Volume
Radionuclide
Concentration
pCi/mL
Error
Estimate
tsCi/mL
L.L.D
jtCi/mL
Effluent
Conc
ltCi/mL
Effluent
Concentration
C08040302-006
FirstQuarter2008
Air Volume in mLs
I.36EI
tU 1.OOE-16 N/A 1.OOE-16 9.OOE-14 l.I1E-0l
23Th 1.OOE-16 N/A 1.OOE-16 3.0014 3.3301
226Ra 1.00E-16 N/A .OOE-16 9.OOE-13 1.1 IE-02
210Pb 2.OOE-15 N/A 2.OOE-15 6.OOE-13 3.33E-01
Air Volume for Blank assumed to be nominal of Samples 36000000 Liters
Quarter/Date Sampled Air
Volume Radionuclide
Concentration
ttCi/mL
Error
Estimate
ltCi/mL
L.L.D
pCi/mL
Effluent
Conc
pCi/mL
Effluent
Concentration
C08070112-006
Second Quarter 2008
Air Volume in mLs
1.30E1
atU 1.OOE-16 N/A I.OOE-16 9.OOE-M 1.11E-01
Fh 1.OOE-16 N/A 1.OOE-16 3.OOE-14 3.33E-01
226Ra l.OOE-16 N/A 1.OOE-16 9.OOE-13 1.1 IE-02
210Pb 2.OOE-15 N/A 2.OOE-15 6.OOE-13 3.33E-0I
Air Volume for Blank assumed to be nominal of Samples 130000000 Liters
Quarter/Date Sampled Air
Volume Radionuclide
Concentration
pCi/mL
Error
Estimate
pCi/mL
L.L.D
jtCi/mL
Effluent
Conc
tCi/mL
Effluent
Concentration
C08100264-006
ThirdQuarter2008
Air Volume in mLs
1.30E1
1.38E-16 N/A 1.OOE-16 9.OOE-14 1.53E-0I
23O 1.OOE-16 N/A 1.OOE-16 3.OOE-14 3.33E-0l
6Ra 1.OOE-16 N/A 1.OOE-16 9.OOE-13 I.I1E-02
2Pb 2.OOE-15 N/A 2.OOE-15 6.OOE-13 3.33E-01
Air Volume for Blank assumed to be nominal of Samples 130000000 Liters
LLDs are from Regulatory Guide 4.14
Effluent Concentration provided by Denison Mines
ENIRGY
LA/JOWl TORIES
Client
Project
Lab ID
Client Sample ID
ENERGYLABORA TORIES INC 2303 Sail CreekHi/iway 82601-P0 Box 3258-Caspe1c WV82602
Toll Free 888.235.0515- 307235.0515-Fax [phone]-caspeitPenergy/ab.com-wwwenergy/ab.com
LABORATORY ANALYTICAL REPORT
Denison Mines USA Corp Report Date 12/05/08
3rd Quarter Environmental Air Collection Date 09/29/08
C081 00264-006 DateReceived 10/07/08
Blank Matrix Filter
MCLI
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium 0.0270 mg/filter 0.0006 SW6020 11/07/08 1602 ts
Uranium Activity 18.3 pCi/Filter 0.4 SW6020 11/07/08 1602 ts
RADIONUCLIDES TOTAL
Lead 210 1.2 pCi/Filter E909.OM 11/10/08 1045/dm
Lead 210 precision 18 pCi/Filter E909.OM 11/10/08 1045 dm
Lead 210 MDC 30 pCi/Filter E909.OM 11/10/08 1045 /dm
Radium 226 0.7 pCi/Filter E903.0 11/09/08 1400 evm
Radium 226 precision 1.6 pCi/Filter E903.0 11/09/08 1400 evm
Radium 226 MDC 2.7 pCi/Filter E903.0 11/09/08 1400 evm
Thorium 230 0.67 pCi/Filter 0.20 E907.0 11/03/08 1545 /dmf
Thorium 230 precision 0.29 pCi/Filter E907.0 11/03/08 1545 dmf
Report RL Analyte reporting limit MCL Maximum contaminant level
Definitions QCL Quality control limit ND Not detected at the reporting limit
MDC Minimum detectable concentration RL increased due to sample matrix interference
Not detected at minimum detectable concentration
EfERGY
LARORA TORIES
ENERGYL.4BORA TORIES INC 2393 Sail Creek HIhway 82501 P0 Box 3258 Caspe4c WY82602
Toll Free 88235.0515 307235.0515 Fai 307234 1539 casperenergy/ab.com www energy/a/i corn
QAIQC Summary Report
Client Denison Mines USA Corp
Project 3rd Quarter Environmental Air
re
Report Date 12/05/08
Werk Order C08100264
RPD RPDL1m1t QualResultUnitsRL%REC Low Limit High Limit
Method E903.O Batch 20334
Sample ID
Radium 226
C08100453-OO3PMS Sample Matrix Spike
150 pCi/L 105
Run BERTHOLD 770_081 031
70 130
11/09/08 1536
Sample ID
Radium 226
C08100453-OO3FMSD Sample Matrix Spike Duplicate
130 pCi/L 97
Run BERTHOLD 770_081031B
70 130 9.9
11/09/08 1536
25
Sample ID
Radium226
LCS-20334 Laboratory Control Sample
15 pCi/L 113
Run BERTHOLD 770_081031
70 130
11/09/08 1711
Sample ID
Radium 226
MB-20334 Method Blank
-2 pCi/L
Run BERTHOLD 770_081031B 11/09/08 1711
Method E907.O Batch 20334
Sample ID
Thorium 230
C081 00637-OOIAMS Sample Matrix Spike
86.7 pCi/Filter 0.20 95
Run EGG-ORTECO81 03A
70 130
11/03/08 1545
Sample ID
Thorium 230
C08100637-OOIAMSD Sample Matrix Spike Duplicate
83.2 pCi/Filter 0.20 89
Run EGG-ORTEC_081 03A
70 130 4.1
11/03/08 1545
30
Sample ID
Thorium 230
LCS-20334 Laboratory Control Sample
38.4 pCi/Filter 0.20 85
Run EGG-ORTEC_081 03A
70 130
11/03/08 1545
Sample ID
Thorium 230
MB-20334 Method Blank
-0.4 pCi/Filter
Run EGG-ORTEC_081 03A 11/03/08 1545
Method E909.OM Batch 20334
Sample ID
Lead 210
C08100264-OO3AMS Sample Matrix Spike
2540 pCi/Filter 95
Run PACKARD 3100TR_081 1OA
70 130
11/10/08 1045
Sample ID
Lead 210
C08100264-OO3AMSD Sample Matrix Spike Duplicate
2580 pCi/Filter 98
Run PACKARD 31 OOTR_081 11 OA
70 130 1.3
11/10/08 1045
30
Sample ID
Lead 210
MB-R111386 Method Blank
pCi/L
Run PACKARD 3100TR_081110A 11/10/08 1045
Sample ID
Lead 210
LCS response
LCS-R111386
is outside of the acceptance
Laboratory Control Sample
57 pCi/L
range for this analysis Since Ihe MS snd MSD pair
49
are
Run PACKARD 3100TR_081 1OA
70 130
acceptable the batch Is approved
11/10/08 1045
Qualifiers
RL Analyte reporting limit
Spike recovery outside of advisory limits
ND Not detected at the reporting limit
Not detected at minimum detectable concentration
Client Denison Mines USA Corp
Project 3rd Quarter Environmental Air
Analyte
Method SWSO2O
Sample ID MB-20334 Method Blank
Uranium 8E-05 mg/filter
Sample ID LCSI-20334 Laboratory Control Sample
Uranium 0.0534 mg/filter
Sample ID C08100460-OO2FMS Sample Matrix Spike
Uranium 0.01 35 mg/L
Sample ID C08100460-OO2FMSD Sample Matrix Spike Duplicate
Uranium 0.01 36 mgJL
Qualifiers
RL Analyte reporting limit
E/ERGY
LAROITA TORIES
ENERO YLAHORA TORIES INC 2393 Sail CreekHihway 8260 P0 Box 3258 Caspai WY82602
Toll Free 888.2350515 307235 0515 FaK 307234.1639k caspeitenergy/ab.com www.energylab.com
QAJQC Summary Report
Result Units
Report Date
Work Order
2/05/08
C08100264
RL %REC Low Limit High Limit RPD RPDLimit Qual
Batch 20334
6E-05
Run ICPMS2-C_081107A 11/07/08 1402
0.00030 107
Run ICPMS2-C_081107A
75 125
11/07/08 1408
0.00030 99
Run ICPMS2-C_081107A
75 125
11/07/08 1727
0.00030 100
Run ICPMS2-C_081107A
75 125 0.8
11/07/08 1733
20
ND Not detected at the reporting limit
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Energy Laboratories Inc
VVo rkorde RecØipt Checklist
Denison Mines USA Corp C08100264
Login completed by Kimberly Humiston Date and Time Received 10/7/2008 920 AM
Reviewed by Received by ah
Reviewed Date Carrier name Next Day Air
Shipping container/cooler in good condition Yes No Not Present
Custody seals intact on shipping container/cooler Yes No Not Present
Custody seals intact on sample bottles Yes No Not Present
Chain of custody present Yes No
Chain of custody signed when relinquished and received Yes No
Chain of custody agrees with sample labels Yes No fl
Samples in proper container/bottle Yes No
Sample containers intact Yes No
Sufficient sample volume for indicated test Yes No
All samples received within holding time Yes No
Container/Temp Blank temperature N/At
Water VOA vials have zero headspace Yes No No VOA vials submitted
Water pH acceptable upon receipt Yes No Not Applicable
Contact and Corrective Action Comments
None
ENERGYLABORA TORIES INC 2393 Sail Creek Hiqbway 82601 RU Box 3258 Caspei WV82602
To//Free 888.2350515 3072350515 Fai 307234.1639 caspeflenergy/aAcom www.energylab.comEfERGY
LAIIOIA TORIES
CLIENT Denison Mines USA Corp Date 05-Dec-08
Project 3rd Quarter Environmental Air CASE NARRATIVE
Sample Delivery Group C081 00264
ORIGINAL SAMPLE SUBMITTALS
All original sample submittals have been returned with the data package
SAMPLE TEMPERATURE COMPLIANCE 4C 2C
Temperature of samples received may not be considered properly preserved by accepted standards Samples that are hand
delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as drinking water method for low TDS waters Data provided by
this method for non potable waters should be viewed as inconsistent
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours days The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay Maximum recommended delay between end of exposure to
beginning of counting should not exceed days
SOIL/SOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated
ATRAZINE SIMAZINE AND PCB ANALYSIS USING EPA 505
Data for Atrazine and Simazine are reported from EPA 525.2 not from EPA 505 Data reported by ELI using EPA method
505 reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample
meets EPA compliance criteria for PCB monitoring
SUBCONTRACTING ANALYSIS
Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its
branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the
Laboratory Analytical Report
BRANCH LABORATORY LOCATIONS
eli-b Energy Laboratories Inc Billings MT
eli-g Energy Laboratories Inc Gillette WY
eli-h Energy Laboratories Inc Helena MT
eli-r Energy Laboratories Inc Rapid City SD
eli-t Energy Laboratories Inc College Station TX
CERTFICATIONS
USEPA WY00002 FL-DOH NELAC E87641 California 0211 8CA
Oregon VW200001 Utah 3072350515 Virginia 00057 Washington C1903
ISO 17025 DISCLAIMER
The results of this Analytical Report relate only to the items submitted for analysis
ENERGY LABORATORIES INC CASPERWY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities Some results requested by the client may not be covered
under these certifications All analysis data to be submitted for regulatory enforcement should be certified in the sample
state of origin Please verify ELIs certification coverage by visiting www.energylab.com
ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our
web page www.energylab.com
THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT
EIERGY
LABOR/i TORIES
ENERO YLASORA TORIES INC 2393 Sail Creek Hiq/iway 82601 20 Box 3258 Caspei WV82602
Toll Free 888.235.0515 307.235.0515 Fax [phone] caspenllenergy/ab.com www.energylab.com
ANALYTICAL SUMMARY REPORT
February 04 2009
Denison Mines USA Corp
6425 Hwy 191
Blanding UT 84511
Workorder No C09010163
Project Name 4th Quarter Air 2008
Energy Laboratories Inc received the following samples for Denison Mines USA Corp on 1/7/2009 for analysis
Sample ID Client Sample ID Collect Date Receive Date Matrix Test
C09010163-001 BHV-1 01/05/09 0000 01/07/09 Filter Composite of two or more samples
Metals Total
Digestion Total Metals
Lead 210
Radium 226
Thorium isotopic
C09010163-002 BHV-2 01/05/09 0000 01/07/09 Filter Same As Above
C09010163-003 BHV-4 01/05/09 0000 01/07/09 Filter Same As Above
C09010163-004 BHV-5 01/05/09 0000 01/07/09 Filter Same As Above
C09010163-005 BHV-8 01/05/09 0000 01/07/09 Filter Same As Above
C09010163-006 Blank 01/05/09 0000 01/07/09 Filter Same As Above
As appropriate any exceptions or problems with the analyses are noted in the Laboratory Analytical Report the
QNQC Summary Report or the Case Narrative
if you have any questions regarding these tests results please call
Report Approved By
SIDE WSTON
ENERG YLASORA TORIES INC 2393 Sail Creak Hibway 8260 P0 Box 3258 Caspe WY82602
Toll Free 888.235.0515 3072350515 Fax [phone] casperenergy/ab.com wwwenergylab.comEIERGY
LAI3RA TORIES
HIGH VOLUME Ant SAMPLING REPORT
CLIENT DENISON MINES
REPORT DATE February 42009
PROJECT 4th Quafler 2008 Environmental Air Sampling
SAMPLE ID RHV-I
Radionuclide
natU
rh
6Ra
Pb
Error
Estimate
itCilmL
N/A
2.63E-17
N/A
3.8 IE-16
Error
Estimate
uCi/mL
N/A
.03E-16
3.46E-17
4.78E-16
L.L.D
ttCi/mL
I.OOE-16
.OOE-16
1.OOE-16
2.OOE-15
L.L.D
pCi/mL
l.OOE-16
1.OOE-16
1.OOE-16
2.OOE-15
Effluent
Conc
uCi/mL
9.OOE-14
3.OOE-14
9.OOE-13
6.OOE-13
Effluent
Conc
uCi/mL
9.OOE-14
3.OOE-14
9.OOE-13
6.OOE-13
Concentration
psCi/mL
7.69E-16
2.94E-16
l.90E-16
7.64E-15
Effluent
Concentration
8.54E-0
9.80E-0
2.IIE-02
I.27E00
Quarter/Date Sampled
AirVolume Radionuclide
Concentration
jtCi/mL
Error
Estimate
gCi/mL
L.L.D
pCi/mL
Effluent
Conc
pCi/mL
Effluent
Concentration
C090l0163-00l
Fourth Quarter 2008
Air Volume in mLs
l.37Ell
l.21E-15 N/A l.OOE-16 9.OOE-14 I.35EO0
230Th 4.76E-l6 5.54E-18 l.OOE-16 3.OOE-14 I.59E00
6Ra 3.34E-16 2.49E-l7 I.OOE-16 9.OOE-13 3.71E-02
Pb 1.16E-14 5.54E-16 2.OOE-15 6.OOE-13 1.93E00
LLDs are from Regulatory Guide 4.14
Quarter/Date Sampled
AirVolume Radionuclide
C08040302-O0l
First Quarter 2008
Air Volume in mL
1.36Ell
Concentration
tCi/mL
natU
230Th
14E-l6
6Ra
13E-16
210Pb
1.OOE-16
Quarter/Date Sampled
Air Volume
Effluent
Concentration
6.44E-15
C080701 12-001
Second Quarter 2008
l.26E-01
3.76E-0
Concentration
ptCi/mL
l.IIE-02
Air Volume in mU
I.24El
7.09E-16
1.07E00
3.83E-16
2.27E-16
Quarter/Date Sampled
Air Volume
Effluent
Concentration
6.52E-15
C08100264-00l
Radionuclide
Third Quarter 2008
7.88E-01
1.28E00
natU
2.53E-02
Error
Estimate
gCWmL
230Th
Air Volume in mLs
I.36EI
I.09E00
6Ra
L.L.D
gCi/mL
N/A
Effluent
Conc
gCi/mL
2t0Pb
2.22E-18
l.OOE-16
4.30E-17
l.OOE-I6
9.OOE-14
16E-16
I.OOE-I6
3.OOE-14
2.OOE-15
9.OOE-13
6.OOE-13
Effluent Concentration provided by Denison Mines
ENERGYLASORA TORIES INC 2393 Sail Creek Hihway 82501 20 Box 3258 Caspei WY82602
Toil Free 888.235.0515 307235.0515 Fax [phone] casperenergy/ab.coni wwwenergy/ab.com
LABORATORY ANALYTICAL REPORT
Report Date 02/04/09
Collection Date 01/05/09
DateReceived 01/07/09
EIERGY
LABORATORIES
Client
Project
Lab ID
Client Sample ID BHV-1
MCLI
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium
Uranium Activity
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
1580 pCi/Filter
42 pCi/Filter
40 pCi/Filter
47.1 pCi/Filter
4.7 pCi/Filter
2.2 pCi/Filter
65 pCi/Filter
1.0 pCi/Filter
SW6020 01/13/09 2124 Isml
SW6020 01/14/09 1829/ts
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
01/15/09 1011 1dm
01/15/09 1011 1dm
01/15/09 1011 1dm
01/22/09 0831 trs
01/22/090831 trs
01/22/09 0831 /trs
01/18/09 1310/dmf
01/18/09 1310/dmf
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MDC Minimum detectable concentration
MCL Maximum contaminant level
ND Not detected at the reporting limit
Denison Mines USA Corp
4th Quarter Air 2008
C09010163-001
Matrix Filter
RADIONUCLIDES TOTAL
Lead 210
0.256 mg/filter
166 pCi/Filter
0.0003
0.2
0.20
ENERO YLABORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258-Caspei WY82602
roll Free 888.2350515 307.235 0515 Fax [phone] caspeflºenergy/ab.corn www.energy/aA cornENERGY
LA/JO/tI OR/ES
HIGH VCUJM1 AIR SAMPLING REPORT
CLIENT DENISON MINES
REPORT DATE February 42009
PROJE 4th Quarter200S EnvironmentalAwSamphug
SAMPLE BHV.2
QuarterlDate Sampled
Air Volume
Air Volume in mL
1.37611
Radionuclide
natu
230Ih
22%
2t0Pb
Concentration
ttCi/mL
.006-16
.006-16
1.006-16
6.496-IS
Error
Estimate
ttCi/mL
N/A
N/A
N/A
3.826-16
Quarter/Date Sampled
Air Volume
C080701 12-002
Radionudide
natU
Concentration
pCi/mL
1.296-16
1.006-16
1.006-16
4.826-15
Error
Estimate
uCi/mL
N/A
N/A
N/A
LLD
rCi/mL
.006-16
Effluent
Conc
uCi/mL
9.006-14
3.006-14
9.006-13
6.006-13
Second Quarter 2008
Air Volume in mL
1.34611
230Th
22%
210Pb 4.516-16
Error
Estimate
ttCi/inL
1.006-16
1.006-16
2.006-15
Effluent
Conc
Ci/inL
Quarter/Date Sampled
Air Volume
C08100264-002
Third Quarter 2008
Air Volume in mL
1.25611
Radionuclide
natu
230Th
22b
2t0Pb
Concentration
jsCi/mL
2.376-16
1.OOE-16
1.006-16
306-15
N/A
N/A
N/A
4.156-16
LLD
tzCi/mL
1.006-16
1.006-16
1.006-16
DOE-IS
9.006-14
3.006-14
9.006-13
6.006-11
To Effluent
Concentration
1.436-01
3.336-01
1.1 lE-02
8.036-01
To Effluent
Concentration
2.636-01
3.336-01
1.116-02
1.18600
Quarter/Date Sampled
Air Volume Radionuclide
Concentration
tCi/mL
Error
Estimate
IICWmL
LLD
gCi/mL
Effluent
Conc
gCi/mL
Effluent
Concentration
C09010163-002
Fourth Quarter2008
AirVolunieinmL
l.37E1l
tU 5.716-16 N/A 1.006-16 9.006-14 6.346-01
Th 1.616-16 5.546-17 1.006-16 3.006-14 5.376-01
226Ra 1.256-16 2.35E-17 1.006-16 9.OOE-13 1.39E-02
2t0Pb 2.046-14 5.546-16 2.006-15 6.006-13 3.41600
LLDs are from Regulatory Guide 4.14
Effluent Concentration provided by Denison Mines
C08040302-002
First Quarter 2008
LLD
ttCWmL
Effluent
Conc
ttCWmL
1.006-16
Effluent
Concentration
1.006-16
9.OOE-14
3.OOE-14
1.006-16
1.116-01
2.006-15
9.006-13
3.336-01
6.006-13
1.116-02
1.08600
ENERGYLASORA TORIES INC 2393 Sail Creek Hqhway 82601 P0 Box 3258 Caspe WY82602
roll Free 888.235.0515 307235.0515 Fax [phone] caspeKJenergylaA corn www energylaLz corn
LABORATORY ANALYTICAL REPORT
Report Date 02/04/09
Collection Date 01/05/09
DateReceived 01/07109
EIERGY
LA/JORA TORIES
Client
Project
Lab ID
Client Sample ID BHV-2
TRACE METALS
Uranium
Uranium Activity
RADIONUCLIDES TOTAL
Lead 210
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
0.116 mg/filter
78.3 pCi/Fiiter
2790
52
40
18.6
3.0
2.1
22
4.6
pCi/Filter
pCi/Fiiter
pCi/Fiiter
pCi/Fiiter
pCi/Fiiter
pCi/Fiiter
pCi/Fiiter
pCi/Fiiter
SW6020 01/13/09 2128 sml
5W6020 01/13/09 2128 sml
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
01/15/09 1011 1dm
01/15/09 1011 /dm
01/15/09 1011 /dm
01/22/09 0831 trs
01/22/09 0831 Us
01 /22/09 0831 Us
01/18/09 1310 dmf
01/18/09 1310 dmf
Report RL Analyte reporting iimit
Definitions QCL Quaiity control iimit
MCL Maximum contaminant ievei
ND Not detected at the reporting iimit
Donison Mines USA Corn
4th Quarter Air 2008
C0901 0163-002
MCLI
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
Matrix Filter
0.0003
0.2
0.20
MDC Minimum detectable concentration
EPERGY
LAL/ORA OR/ES
ENERGYLABORA TORIES INC 2393 Sail Creek Hiqhway 82601 P0 Box 3258 Caspei WV82602
Toll Free 888.235.0515 3072350515 Fax [phone] caspen4anergylab.com winzenergy/ab.com
HIGH VOLUME AIR SAMPLING REPORT
CLIENT DENISON MINES
REPORT DATE February 4200
paojgcr 4th Quarter 2008 Environmental Air Samphng
SAMPISEID BHV-4
Error
Estimate
ttCi/inL
Effluent
Cone
uCiImL
Error
Estimate
uCi/mL
Effluent
Cone.5
uCi/mL
Error
Estimate
pxCi/mL
Effluent
Cone
tiCi/niL
Quarter/Date Sampled
Air Volume
C08040302-003
First Quarter 2008
Air Volume inmL
1.36E11
Quarter/Date Sampled
Air Volume
C080701 12-003
Second Quarter 2008
Air Volume instiL
l.24E1
Quarter/Date Sampled
Air Volume
C08100264-003
Third Quarter 2008
Air Volume in mL
36E11
Radionuclide
natU
230p
226Ra
210Pb
Radionuclide
natu
23i.p
22i
2Pb
Radionuclide
natu
230Th
226
zwPb
Concentration
pCi/mL
1.25E-16
.OOE-16
1.OOE-16
4.09E-15
Concentration
gCi/mL
1.2SF-iS
7.72E-16
3.61E-16
1.18E-14
Concentration
sCi/mL
2.72E-1
1.27E-15
7.66E-16
1.lOE-14
N/A
N/A
N/A
3.04E-16
N/A
2.09E-16
4.30E-17
5.73E-16
N/A
.39E-17
8.1SF-li
4.72E-16
LLD
ttCi/mL
1.OOE-16
1.OOE-16
.OOE-16
2.OOF-1S
LLD
zCi/mL
l.OOE-16
1.OOE-16
1.OOE-16
2.OOE-15
LLD
tCi/mL
1.OOE-16
1.OOE-16
1.OOE-16
2.OOE-15
9.OOE-14
3.OOE-14
9.OOE-13
6.OOE-13
9.OOE-14
3.OOE-14
9.OOE-13
6.OOF-13
9.OOE-14
3.OOE-14
9.OOE-13
6.OOE-13
Effluent
Concentration
1.39E-01
3.33E-0l
1.1 IE-02
6.81E-01
Effluent
Concentration
1.42E00
2.57E00
4.O1E-02
.97E00
Effluent
Concentration
3.02E00
4.23E00
8.SIE-02
1.83E00
Quarter/Date Sampled
Air Volume Raclionuclide
Concentration
ttCi/mL
Error
Estimate
pCi/niL
LLD
gCi/mL
Effluent
Cone
pCi/mL
Effluent
Concentration
C09010163-003
FourthQuarter2008
Air Volume inmL
1.36E11
tU 2.8SF-IS N/A l.OOF-16 9.OOE-14 3.21E00
230Th I.1OE-15 3.25E-16 l.OOF-16 3.OOF-14 3.67E00
226 6.56F-16 2.22F-17 1.OOF-16 9.OOE-13 7.29F-02
2ttPb 1.38F-14 5.55F-16 2.OOE-15 6.OOF-13 2.30F00
LLDs are from Regulatory Guide 4.14
Effluent Concentration provided by Denison Mines
ENERG YLASORA TORIES INC 2393 Sail Creek HIghway 82601 P0 Box 3258 Caspe4c WV82602
Tel/Free 889235.0515 3072350515 Fax [phone] casperc4energylaLi.com wwwenergylab.com
LABORATORY ANALYTICAL REPORT
Report Date 02/04/09
Collection Date 01/05/09
DateReceived 01/07/09
EtERGY
LABORA TORIES
Client
Project
Lab ID
Client Sample ID BHV-4
MCL/
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium
Uranium Activity
0.581 mg/filter
393 pCi/Filter
0.0003
0.2
SW6020 01/131092132 sml
5W6020 01/13/09 2132 smi
RADIONUCLI DES TOTAL
Lead 210
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
1880
45
40
90.8
6.1
2.0
150
24
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
01/15/09 1011 /dm
01115/09 1011 /dm
01/15/09 1011 /dm
01/22/09 0831 trs
01/22/090831 trs
01/22/090831 trs
01/18/09 1310 dmf
01/18/09 1310 dmf
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MDC Minimum detectable concentration
MCL Maximum contaminant level
Denison Mines USA Corn
4th Quarter Air 2008
C0901 0163-003
Matrix Filter
0.20
ND Not detected at the reporting limit
ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258 Caspei WY82602
Toll Free 888.23S.O515 307235 0515 Fax [phone] caspeitenergy/ab.com wwwenergylab.com
LABORA TORIES
GR VOLUME AIR SAMPUNG REPORT
CLIENT DENISON MINES
REPORT DATE Pebruasy 42009
PROJECT 4th Quarter 2008 Environmental Air Sampling
SAMPLE ID BlEW
Concentration
ttCiIinL
16E-16
6.17E-16
3.70E-16
4.825-15
Concentration
iCi/inL
3.135-15
1.555-15
9.275-16
7.405-15
Concentration
tCWmL
7.085-15
3.415-15
2.52E-15
1.155-14
Effluent
Concentration
3.515-01
2.06500
4.115-02
8.035-01
Ye Effluent
Concentration
3.48500
5.15500
1.035-01
1.23500
Effluent
Concentration
7.86500
1.14501
2.80E-01
1.92500
Quarter/Date Sampled
Air Volume Radionudide
Concentration
jsCi/mL
Error
Estimate
tCi/mL
LLD
prCi/mL
Effluent
Conc
tCi/mL
Effluent
Concentration
C09010163-004
Fourth Quarter2008
Air VolumeinmL
1.36511
tU 7.225-15 N/A 1.005-16 9.005-14 8.02500
230Th 2.825-15 4.125-16 1.005-16 3.005-14 9.41500
22%3.03E-15 1.475-17 1.005-16 9.005-13 3.375-01
210Pb 1.595-14 2.94E-16 2.OOE-15 6.005-13 2.65500
LLDs are from Regulatory Guide 4.14
Effluent Concentration provided by Denison Mines
Quarter/Date Sampled
Air Volume
C08040302-004
First Quarter 2008
Radionudide
natU
Error
Estimate
tCi/mL
231th
Air Volume in mL
1.36511
226Ra
LLD
itCi/mL
N/A
Effluent
Coac
trCi/mL
2t0Pb
4.265-17
1.005-16
Quarter/Date Sampled
Air Volume
1.005-16
3.675-17
9.005-14
C080701 12-004
3.005-14
1.005-16
Radionuclide
1.75E-16
Second Quarter 2008
9.005-13
2.OOE-15
nalrj
6.005-13
Error
Estimate
tCi/mL
230Th
Air Volume in mL
1.33511
226
LLD
itCl/mL
N/A
Effluent
Conc
itCi/mL
2t0Pb
2.305-16
1.005-16
Quarter/Date Sampled
Air Volume
4.205-17
9.005-14
1.005-16
C08100264-004
Third Quarter 2008
2.735-16
3.005-14
1.005-16
Radionudlide
2.005-15
9.005-13
natu
6.005-13
Error
Estimate
uCi/mL
230Th
Air Volume inmL
1.36511
226Ra
LLD
tCi/mL
N/A
Effluent
Conc
uCi/mL
2t0Ph
1.985-17
1.005-16
8.435-17
1.005-16
9.005-14
2.565-16
1.005-16
3.005-14
2.005-15
9.005-13
6.005-13
ENERGYLABORA TORIES INC 2393 Sail Creek Hi/iway 82601 P0 Box 3258 Caspei WY82602
To/I Free 888.235 0515 307235.0515 Fax [phone] casper/Ienergy/ab.com www.energyfab.comEIERGY
LABORA TORIES
LABORATORY ANALYTICAL REPORT
Client Denison Mines USA Corp Report Date 02104/09
Project 4th Quarter Air 2008 Collection Date 01/05/09
Lab ID C0901 0163-004 DateReceived 01/07/09
Client Sample ID BHV-5 Matrix Filter
MCLI
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium 1.45 mg/filter 0.0003 SW6020 01/13/09 2136/smi
Uranium Activity 982 pCi/Filter 0.2 5W6020 01/13109 2136 smi
RADIONUCLI DES TOTAL
Lead 210 2160 pCi/Filter E909.OM 01/15/09 1011 1dm
Lead 210 precIsion 47 pCi/Filter E909.OM 01/15/09 1011 dm
Lead 210 MDC 40 pCi/Filter E909.OM 01/15/09 1011 1dm
Radium 226 414 pCi/Filter E903.0 01/22/09 0831 trs
Radium 226 precision 12.8 pCi/Filter E903.0 01/22/090831 trs
Radium 226 MDC 2.0 pCi/Filter E903.0 01/22/090831 trs
Thorium 230 384 pCi/Filter 0.20 E907.0 01/18/09 1310 dmf
Thorium 230 precision 56 pCi/Filter E907.0 01/18/09 1310 dmf
Report RL Analyte reporting limit MCL Maximum contaminant level
Definitions QCL Quality control limit ND Not detected at the reporting limit
MDC Minimum detectable concentration
ENERO YLABORA TORIES INC 2393 Sail Creek Highway 82501 P0 Box 3258 Caspac WY82602
Toll Free 888.235.0515 307235.0515 Fax [phone] caspenllenergy/ab.com www.energylab.comEIERGY
LA/JO/lA 0/lIES
HIGH VOLUME AIR SAMPLING REPORT
CLIENT
REPORT DATE
DENISON MINES
February 42009
PROJECT 4th Quarter 2008 Environmental Air Sampling
SAMPLE ID BHV-6
Error
Estimate
tin/mi
Effluent
Conc
tsCiImL
Error
Estimate
pCi/mL
Effluent
Conc
gCi/mL
Quarter/Date Sampled
Air Volume
C08040302-005
First Quarter 2008
Air Volume in mLs
1.36E1
Quarter/Date Sampled
AirVolume
C080701 12-005
Quarter/Date Sampled
Air Volume
C08 100264-005
Third Quarter 2008
Air Volume in mLs
1.36El1
Radionuclide
naiu
230Tb
226Ra
2Pb
Radionuclide
Radionuclide
natu
Concentration
sCi/mL
4.34E-16
3.5 1E-16
1.OOE-16
5.99E-15
Concentration
pCi/mL
1.88E-15
9.005-16
4.045-16
7.415-15
4.82E-15
2.105-15
1.275-15
1.005-14
N/A
3.385-17
N/A
1.945-16
N/A
Error
Estimate
..rM.1
N/A
L.L.D
sCi/mL
1.005-16
1.005-16
1.005-16
2.OOE-1
LLD
gCiImL
1.005-16
1.005-16
1.OOE-16
2.005-15
L.L.D
tCi/mL
1.005-16
1.OOE-16
1.005-16
2.005-15
9.OOE-14
3.005-14
9.005-13
6.OOE-13
9.005-14
3.005-14
9.005-13
9.005-14
3.005-14
9.005-13
6.005-13
Effluent
Concentration
4.835-01
1.17500
1.1 IE-02
9.98E-01
Second Quarter 2008
Air Volume in mLs
1.33E1
230Th
226Ra
2t0Pb
Concentration
ttCi/mL
.435-16
2.85E-17
2.735-16 6.005-13
Effluent
Conc
gCi/mL.-
23
6Ra
210Pb
1.54E-17
6.595-17
2.425-16
Quarter/Date Sampled
Air Volume
Radionuclide
Concentration
gCi/mL
Error
Estimate
jtCi/mL
L.L.D
gCi/mL
Effluent
Conc
gCi/mL
Effluent
Concentration
C09010163-005
Fourth Quarter 2008
Air Volume in mLs
1.36511
4.805-15 N/A 1.005-16 9.OOE-14 5.34500
230Th I.70Ei5 2.65546 1.00546 3.00544 5.685400
226 1.255-15 1.765-li 1.005-16 9.OOE-13 1.39E-01
2tPb 1.495-14 2.945-16 2.005-15 6.005-13 2.49500
Effluent
Concentration
2.09500
3.OOE00
4.495-02
1.24500
Effluent
Concentration
5.35500
6.99500
1.415-01
1.67500
LLDs are from Regulatory Guide 4.14
Effluent Concentration provided by Denison Mines
EIERGY
LABOI1 TOI/LS
ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258 Caspei WV82602
Toll Free 888.235 0515 307235.0515 Fax [phone] caspeflPenergy/ab.com www energy/ab corn
LABORATORY ANALYTICAL REPORT
ClIent
Project
Lab ID
Client Sample ID
Denison Mines USA Corp
4th Quarter Air 2008
C0901 0163-005
BHV-6
Report Date 02/04/09
Collection Date 01/05/09
DateRecelved 01/07/09
Matrix Filter
MCL/
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium
Uranium Activity
RADIONUCLIDES TOTAL
Lead 210
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
0.966 mg/filter
654 pCi/Filter
2030
46
40
172
9.1
2.4
232
36
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
SW6020 01/13/09 2140/sml
SW6020 01/13/09 2140 sml
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
01/15/09 1011 /dm
01/15/09 1011 /dm
01/15/09 1011/dm
01/22/09 083 trs
01/22/09 0831 trs
01/22/09 0831 trs
01/18/09 1310 dmf
01/18/09 1310 dmf
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MDC Minimum detectable concentration
MCL Maximum contaminant level
0.0003
0.2
0.20
ND Not detected at the reporting limit
ENERO YLABORA TORIES INC 2393 Salt Creek Hiqbway 8250V P0 Box 3258 Caspei WY82602
Toll Free 888.235.0515 3072350515 Fax [phone] casperenergylab.com www.energylab.comEPERGY
LABORA TORIES
ifiGil VOLUME AIR SAMPLING REPORT
CLIENT DENISON MINES
REPORT DATE February 42009
PROJECT 4th Quarter 2008 Environmental Air Sampling
SAMPLE ID BLANK
Quarter/Date Sampled
Air Volume
Radionuclide
Concentration
gCi/mL
Error
Estimate
ttCilmL
L.L.D
gCilmL
Effluent
Conc
jsCi/mL
Effluent
Concentration
C08040302-006
First Quarter 2008
Air Volume in mLs
1.36E1
atu 1.00E-16 N/A 1.OOE-16 9.00E-14 1.1 IE-Ol
230Th 1.00E-16 N/A 1.OOE-16 3.00E-14 3.33E-01
226Ra 1.OOE-16 N/A l.OOE-16 9.OOE-13 l.IIE-02
2t0Pb 2.00E-l5 N/A 2.00E-15 6.OOE-13 3.33E-O1
Air Volume for Blank assumed to be nominal of Samples 36000000 Liters
Quarter/Date Sampled
Air Volume Radionuclide
Concentration
jsCi/mL
Error
Estimate
gCi/mL
L.L.D
jtCilmL
Effluent
Conc
jtCi/mL
Effluent
Concentration
C080701 12-006
Second Quarter 2008
Air Volume in mLs
l.30E1
1.OOE-16 N/A 1.OOE-16 9.00E-14 1.11E-01
230Th 1.OOE-l6 N/A 1.00E-16 3.OOE-14 3.33E-Ol
226 Ra 1.OOE-16 N/A 1.OOE-16 9.OOE-13 1.11E-02
210Pb 2.OOE-15 N/A 2.OOE-15 6.OOE-13 3.33E-01
Air Volume for Blank assumed to be nominal of Samples 130000000 Liters
Quarter/Date Sampled
Air Volume Radionuclide
Concentration
ptCi/mL
Error
Estimate
ItCi/mL
L.L.D
ttCi/mL
Effluent
Conc
itCi/mL
Effluent
Concentration
C08100264-006
Third Quarter 2008
Air Volume in mLs
l.30El
nat
l.38E-16 N/A 1.OOE-16 9.OOE-14 1.53E-01
23Om 1.OOE-16 N/A 1.OOE-16 3.OOE-14 3.33E-01
226Ra 1.OOE-16 N/A l.OOE-I6 9.OOE-13 1.1 IE-02
2t0Pb 2.OOE-l5 N/A 2.OOE-15 6.OOE-13 3.33E-0l
Air Volume for Blank assumed to be nominal of Samples 30000000 Liters
Quarter/Date Sampled
AirVolume Radionuclide
Concentration
sCilmL
Error
Estimate
gCi/mL
L.L.D
jtCi/mL
Effluent
Conc
ptCi/mL
Effluent
Concentration
C09010163-006
Fourth Quarter 2008
Air Volume in mLs
l.30El1
l.00E-l6 N/A 1.OOE-16 9.OOE-14 l.I1E-0l
230Th l.OOE-16 N/A l.OOE-t6 3.OOE-14 3.33E-01
226Ra l.OOE-16 N/A 1.OOE-l6 9.OOE-t3 1.llE-02
21Pb 2.OOE-15 N/A 2.OOE-15 6.OOE-13 3.33E-0l
Air Volume for Blank assumed to be nominal of Samples 130000000 Liters
LLDs are from Regulatory Guide 4.14
Effluent Concentration provided by Denison Mines
ENERGYLABORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258 Casper WY82602
Toll Free 888235.0515 307.235.0515 Fax [phone] casperanergy/ab.com wwwenergy/ab.com
LABORATORY ANALYTICAL REPORT
Report Date 02/04/09
Collection Date 01/05/09
DateReceived 01/07/09
EPSERGY
LABOIA ICR/ES
Client
Project
Lab ID
Client Sample ID Blank
MCL
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium
Uranium ActMty
0.0109 mg/filter
7.4 pCi/Filter
0.0003
0.2
SW6020 01/14/09 1835 ts
SW6020 01/14/09 1835 ts
RADIONUCLIDES TOTAL
Lead 210
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
26 pCi/Filter
24 pCi/Filter
40 pCi/Filter
0.6 pCi/Filter
1.4 pCi/Filter
2.3 pCi/Filter
3.2 pCi/Filter
1.6 pCi/Filter
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
01/15/09 1011 /dm
01/15/09 1011 /dm
01/15/09 1011 /dm
01/22/09 0831 trs
01/22/09 0831 trs
01/22/09 083 trs
01/18/09 1310 dmf
01/18/09 1310 dm1
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MDC Minimum detectable concentration
MCL Maximum contaminant level
ND Not detected at the reporting limit
The analyte was detected in the method blank
Donison Mines USA Corp
4th Quarter Air 2008
C09010163-006
Matrix Filter
0.20
Not detected at minimum detectable concentration
LABORATORIES
ENERGVLABORA TORIES INC 2393 Sail Creek HI7bway 82601 P0 Box 3258 Caspe WY82602
Toll Free 888.235.0515 307235 0515 Fax [phone] caspenPenergylab.com www.energylab.com
QAIQC Summary Report
Client Denison Mines USA Corn Report Date 02/04/09
Project 4th Quarter Air 2008 Work Order C09010163
Analyte Result Units RL YOREC Low Limit High Limit RPD RPDLimit Qual
Method E903.0 Batch 21078
Sample ID C09010057-OO5ADUP Sample Duplicate Run BERTHOLD 770-2_090115B 01/22109 0256
Radium 226 -1.42 pCI/Filter 16 125.6
Sample ID C09010163-OO6AMS Sample Matrix Spike Run BERTHOLD 770-20901 15B 01/22109 0831
Radium 226 78.5 pCi/Filter 105 70 130
Sample ID LCS-21078 Laboratory Control Sample Run BERTHOLD 770-2_090115B 01/22/09 0831
Radium 226 15.2 pCi/Filter 100 70 130
Sample ID MB-21078 Method Blank Run BERTHOLD 770-2_090115B 01/22/09 0831
Radium 226 0.2 pCi/Filter
Method E907.0 Batch 21078
Sample ID C09010163-OOIAMS Sample Matrix Spike Run EGG-ORTEC_090114A 01/18/09 1310
Thorium 230 124 pCi/Filter 0.20 134 70 130
Spike response is outside of the acceptance range for this analysis Since the LCS and the RPO for the MS MSD pair are acceptable the response is considered to be
matrix related The batch is approved
Sample ID C09010163-OOIAMSD Sample Matrix Spike Duplicate Run EGG-ORTEC_090114A 01/18/09 1310
Thorium 230 108 pCi/Filter 0.20 102 70 130 14 45.5
Sample ID LCS-21078 Laboratory Control Sample Run EGG-ORTEC_090114A 01/18/09 1310
Thorium 230 4.64 pCi/Filter 0.20 95 70 130
Sample ID MB-21078 Method Blank Run EGG-ORTEC_090114A 01/18/09 1310
Thorium 230 0.2 pCi/Filter
Method E909.OM Batch 21078
Sample ID C09010057-OO7AMS Sample Matrix Spike Run PACKARD 3100TR_090115B 01/15/09 1011
Lead 210 1380 pCi/Filter 109 70 130
Sample ID C09010057-OO7AMSD Sample Matrix Spike Duplicate Run PACKARD 3100TR 090115B 01/15/09 1011
Lead 210 1490 pCi/Filter 119 70 130 7.5 30
Sample ID MB-R113841 Method Blank Run PACKARD 3IOOTR_090115B 01/15/09 1011
Lead 210 pCi/Filter
Sample ID LCS-R113841 Laboratory Control Sample Run PACKARD 3IOOTR_090115B 01/15/09 1011
Lead 210 96.2 pCi/Filter 81 70 130
Qualifiers
RL Analyte reporting limit ND Not detected at the reporting limit
Spike recovery outside of advisory limits Not detected at minimum detectable concentration
ENERGYrOR/ES
ENERGVLAHORA TORIES INC -2393 Sail Greek Hibw
Toll Free 888235.0515 307235.0515 Fax [phone]
ay 82601 P0 Box 3258 Caspe4c WV82602
casper4energy/ab.com nnwenergy/ab.com
QAIQC Summary Report
Client Denison Mines USA Corn
Project 4th Quarter Air 2008
Report Date 02/04/09
Work Order C09010163
Analyte Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual
Method SW6020 Batch 21078
Sample ID MB-21078 Method Blank
Uranium 0.002 mg/filter 6E-05
Run ICPMS2-C_090114A 01/14/09 1715
Sample ID MB-21078 Method Blank
Uranium 0.002 mg/filter
Run ICPMS4-C_090113A 01/13/09 1958
Sample ID LCSI-21078 Laboratory Control Sample
Uranium 0.0976 mg/filter 0.00030
Run ICPMS4-C_0901 13A 01/13/09 2019
96 75 125
Sample ID C09010163-OO6AMS Sample Matrix Spike
Uranium 0.0638 mg/filter 0.00030
Run ICPMS4-C_090113A 01/13/09 2204
104 75 125
Sample ID C09010163-OO6AMSD Sample Matrix Spike Duplicate
Uranium 0.0636 mg/filter 0.00030
Run ICPMS4-C_090113A 01/13/09 2208
104 75 125 0.3 20
Qualifiers
RL Analyte reporting limit ND Not detected at the reporting limit
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Energy Laboratories Inc
Workorder Receipt Checklist
Denison Mines USA Corp
Login completed by Kimberly Humiston
Reviewed by
Reviewed Date
Shipping container/cooler in good condition
custody seals intact on shipping containerlcooler
custody seals intact on sample bottles
chain of custody present
chain of custody signed when relinquished and received
chain of custody agrees with sample labels
Samples in proper container/bottle
Sample containers intact
Sufficient sample volume for indicated test
All samples received within holding time
container/Temp Blank temperature
Water VOA vials have zero headspace
Water pH acceptable upon receipt
contact and corrective Action comments
None
C0901 0163
Date and Time Received /7/2009 930 AM
Received by pb
Carrier name Next Day Air
Yes No Not Present
Yes No Not Present
Yes No Not Present
Yes No fl
Yes No
Yes No
Yes No
YesEzi No fl
Yes No fl
Yes No
N/Ac
Yes No No VOA vials submitted
Yes No Not Applicable
ENERG YLABORA TORIES INC 2393 Sail Creek Higbway 82601 EQ Sex 3258 Casper WV82602
____________Tell Free 888235.0515 3072350515 Fax [phone] casperenergyIab.cem www.energylab.com
LAI3ORA
CLIENT Denison Mines USA Corp Date 04-Feb-09
Project 4th Quarter Air 2008 CASE NARRATIVE
Sample Delivery Group C090 10163
ORIGINAL SAMPLE SUBMITTALS
All original sample submittals have been returned with the data package
SAMPLE TEMPERATURE COMPLIANCE 4C 2C
Temperature of samples received may not be considered properly preserved by accepted standards Samples that are hand
delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun
GROSS ALPHA ANALYSIS
Method 900.0 for gross alpha and gross beta is intended as drinking water method for low TDS waters Data provided by
this method for non potable waters should be viewed as inconsistent
RADON IN AIR ANALYSIS
The desired exposure time is 48 hours days The time delay in returning the canister to the laboratory for processing
should be as short as possible to avoid excessive decay Maximum recommended delay between end of exposure to
beginning of counting should not exceed days
SOIL/SOLID SAMPLES
All samples reported on an as received basis unless otherwise indicated
ATRAZINE SIMAZINE AND PCB ANALYSIS USING EPA 505
Data for Atrazine and Simazine are reported from EPA 525.2 not from EPA 505 Data reported by ELI using EPA method
505 reflects the results for seven individual Aroclors When the results for all seven are ND not detected the sample
meets EPA compliance criteria for PCB monitoring
SUBCONTRACTING ANALYSIS
Subcontracting of sample analyses to an outside laboratory may be required If so ENERGY LABORATORIES will utilize its
branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the
Laboratory Analytical Report
BRANCH LABORATORY LOCATIONS
eli-b Energy Laboratories Inc Billings MT
eli-g Energy Laboratories Inc Gillette WY
eli-h Energy Laboratories Inc Helena MT
eli-r Energy Laboratories Inc Rapid City SD
eli-t Energy Laboratories Inc College Station TX
CERTFICATIONS
USEPA WY00002 FL-DOH NELAC E87641 California 0211 8CA
Oregon WY200001 Utah 3072350515 Virginia 00057 Washington C1903
ISO 17025 DISCLAIMER
The results of this Analytical Report relate only to the items submitted for analysis
ENERGY LABORATORIES INC CASPERWY certifies that certain method selections contained in this report meet
requirements as set forth by the above accrediting authorities Some results requested by the client may not be covered
under these certifications All analysis data to be submitted for regulatory enforcement should be certified in the sample
state of origin Please verify ELIs certification coverage by visiting www.energylab.com
ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our
web page www.energylab.com
THIS IS THE FINAL PAGE OF THE LABORATORY ANALYTICAL REPORT
Pqriod June 30 2008 through September 29 2008 3rd Quarter 2008 Page
BHV-1 on stream 99.7%BHV-1 Total Volume 4.81 E06
Week Filter Start Stop Stop Start Total Total Loading Per Cent
Number Date Date Gross Tare Net Time Time Time Liters mg/m3 On Stream SCFM
7821171 30-Jun-08 7-Jul-08 4.7629 4.5563 0.2066 4678.4 4511.9 9991.2 10326554 0.0200 99.1%36.5
7821165 07-Jul-08 14-Jul.08 4.7672 4.5540 0.2132 4846.3 4678.4 10078.2 10559165 0.0202 100.0%37.0
7821159 14-Jul-08 21-Jul-08 4.7872 4.5600 0.2272 5012.6 4846.3 9975.0 10451040 0.0217 99.0%37.0
7821153 21-Jul-08 28-Jul-08 4.6781 4.5407 0.1374 5180.6 5012.6 10078.2 10559165 0.0130 100.0%37.0
7821147 28-Jul-08 4-Aug-08 4.6381 4.4536 0.1845 5350.9 5180.6 102192 10706894 0.0172 101.4%37.0
7821141 04-Aug-08 11-Aug-08 4.58 13 4.4760 0.1053 5515.6 5350.9 9880.2 10351716 0.0102 98.0%37.0
7821135 11-Aug-08 18-Aug-08 4.6253 4.4692 0.1561 5683.4 5515.6 10071.6 10523731 0.0148 99.9%36.9
7821129 18-Aug-08 25-Aug-08 4.6363 4.4760 0.1603 5850.4 5683.4 10017.6 10467307 0.0153 99.4%36.9
7821123 25-Aug-08 1-Sep-08 4.6230 4.4369 0.1861 6042.7 5850.4 11541.6 12059722 0.0154 114.5%36.9
10 7821117 01-Sep-08 8-Sep-08 4.5653 4.4364 0.1289 6188.7 6042.7 8759.4 9078212 0.0142 86.9%36.6
11 7821111 08-Sep-08 15-Sep-08 4.5583 4.4349 0.1234 6352.9 6188.7 9851.4 10154165 0.0122 97.7%36.4
12 7821105 15-Sep-08 22-Sep-08 4.6389 4.4508 0.1881 6520.3 6352.9 10042.2 10350829 0.0182 99.6%36.4
13 7820499 22-Seo-08 29-Sen-OS 4.6094 4.3907 0.2187 6690.0 6520.3 10182.6 10.495.544 0.0208 101.0%36.4
Totals 91 2184.0 4.651638 4.479654 0.1720 130688.4 136084045 0.0164 99.7%36.8
BHV-2 on stream 91.9%BHV-2 Total Volume 4.43506
Week Filter Start Stop Stop Start Total Total Loading Per Cent
Number Date Date Gross Tare Net Time lime Time Liters mglm3 On Stream SCFM
7821170 30-Jun-08 07-Jul-08 4.9630 4.5344 0.4286 15039.0 14872.6 9980.4 10315391 0.0415 99.0%36.5
7821164 07-Jul-08 14-Jul-08 4.9379 4.5483 0.3896 15206.9 15039.0 10073.4 10554136 0.0369 99.9%37.0
7821158 14-Jul-08 21-Jul-08 5.0540 4.5465 0.5075 15373.6 15206.9 10003.8 10481215 0.0484 99.2%37.0
7821152 21-Jul-08 28-Jul-08 4.8903 4.5357 0.3546 15541.2 15373.6 10057.8 10537792 0.0337 99.8%37.0
7821146 28-Jul-08 04-Aug-08 4.5070 4.4858 0.0212 15541.4 155412 10.8 11315 1.8736 0.1%37.0
7821140 04-Aug-08 11-Aug-08 4.7349 4.4495 0.2854 15706.0 15541.4 9878.4 10349830 0.0276 98.0%37.0
7821134 1-Aug-08 18-Aug-08 4.8130 4.4793 0.3337 15873.8 15706.0 10066.2 10518088 0.0317 99.9%36.9
7821128 18-Aug-08 25-Aug-08 4.8568 4.4832 0.3736 16040.8 15873.8 10023.0 10.472949 0.0357 99.4%36.9
7821122 25-Aug-08 01-Sep-08 4.9082 4.4355 0.4727 16233.1 16040.8 11535.0 12052825 0.0392 114.4%36.9
10 7821116 01-Sep-08 08-Sep-08 4.6681 4.4268 0.2413 16379.3 16233.1 8770.8 9090027 0.0265 87.0%36.6
11 7821110 08-Sep-08 15-Sep-08 4.6918 4.4273 0.2645 16543.2 16379.3 9835.8 10138086 0.0261 97.6%36.4
12 7821104 15-Sep-08 22-Sep-08 4.7742 4.4412 0.3330 16710.6 16543.2 10045.2 10353921 0.0322 99.7%36.4
13 7820498 22-Sep-08 29-Sep-08 4.9449 4.4180 0.5269 16879.8 16710.6 10149.0 10460912 0.0504 100.7%36.4
Totals 91 2184.0 4.826469 4.477808 0.3487 120429.6 125336489 0.1772 91.9%36.8
BHV-4 on stream 100.0%BHV-4 Total Volume 4.82E06
Week Filter Start Stop Stop Start Total Total Loading Per Cent
Number Date Date Gross Tare Net Time Time Time Liters mglm3 On Stream SCFM
7821169 30-Jun-08 07-Jul-08 4.7449 4.5647 0.1802 4675.3 4506.3 10137.6 10477868 0.0172 100.6%36.5
7821163 07-Jul-06 14-Jul-08 4.8057 4.5562 0.2495 4844.3 4675.3 10142.4 10.626429 0.0235 100.6%37.0
7821157 14-Jul-08 21-Jul-08 4.6937 4.5275 0.1662 5007.7 4844.3 9804.6 10272508 0.0162 973%37.0
7821151 21-Jul-08 28-Jul-08 4.7682 4.5366 0.2316 5175.7 5007.7 10078.8 10.559794 0.0219 100.0%37.0
7821145 28-Jul-08 04-Aug-08 4.7092 4.5060 0.2032 5348.2 5175.7 10350.0 10843937 0.0187 102.7%37.0
7821139 04-Aug-08 11-Aug-08 4.6145 4.4621 0.1524 5511.7 5348.2 9810.0 10278166 0.0148 97.3%37.0
7821133 11-Aug-08 18-Aug-08 4.6658 4.4448 0.2210 5660.6 5511.7 10134.0 10.588932 0.0209 100.5%36.9
7821127 18-Aug-08 25-Aug-08 4.71 79 4.4986 0.2193 5846.6 5680.6 9963.0 10410256 0.0211 98.8%36.9
7821121 25-Aug-08 01-Sep-08 4.6472 4.4234 0.2238 6038.4 5846.6 11508.6 12025240 0.0186 114.2%36.9
10 7821115 01-Sep-08 08-Sep-08 4.6081 4.4277 0.1804 6187.6 6038.4 8951.4 9277201 0.0194 88.8%36.6
11 7821109 08-Sep-08 15-Sep-08 4.6070 4.4409 0.1661 6352.1 6187.6 9866.4 10169626 0.0163 97.9%36.4
12 7821103 15-Sep-08 22-Sep-08 4.6485 4.4392 0.2093 6519.8 6352.1 10065.0 10.374330 0.0202 99.9%36.4
13 7820497 22-Sep-08 29-Sep-08 4.6347 4.3916 0.2431 6690.5 6519.8 102432 10558007 0.0230 101.6%36.4
Totals 91 2184.0 4.681954 4.478408 0.2035 131055 136462293 0.0194 100.0%36.8
BHV-5 on stream 100.0%BHV-5 Total Volume 4.82E06
Week Filter Slsrt Stop Stop Start Total Total Loading Per Cent
Number Date Date Gross Tare Net Time lime Time Liters mglm3 On Stream SCFM
7821168 30-Jun-08 07-Jul-06 4.8212 4.5582 0.2630 14937.5 14768.8 10123.2 1Q462984 0.0251 100.4%36.5
7821162 07-Jul-08 14-Jul-08 8145 4.5644 0.2501 15106.7 14937.5 10149.6 10.633.973 0.0235 100.7%37.0
7821156 14-Jul-08 21-Jul-08 41935 4.5424 0.2511 15271.0 15106.7 9858.0 10328457 0.0243 97.8%37.0
7821150 21-Jul-08 28-Jul-08 4.7224 4.5426 0.1798 15439.0 15271.0 10077.6 10.558.537 0.0170 100.0%37.0
7821144 28-Jul-08 04-Aug-08 4.z86i 4.4735 0.3129 15611.4 15439.0 10344.0 10837.650 0.0289 102.6%37.0
7821138
7821132
7821126
04-Aug-08
11-Aug-08
18-Aug-08
11-Aug-08
18-Aug-08
25-Aug-08
46804
4.8238
4.7718
4.4811
4.4612
4.5077
0.1993
0.3626
0.2641
15774.8
15943.7
16109.8
15611.4
15774.8
15943.7
9805.2
10134.6
9964.2
10273137
10589.559
10.411509
0.0194
0.0342
0.0254
97.3%
100.5%
98.9%
37.0
36.9
36.9
7821120 25-Aug-06 01-Sep-08 4.7038 4.4355 0.2683 16301.9 16109.8 11529.6 12.047183 0.0223 114.4%36.9
10 7821114 01-Sep-08 08-Sep-08 4.6153 4.4246 0.1907 16450.5 16301.9 8913.0 9237403 0.0206 88.4%36.6
11 7821108 08-Sep-08 15-Sep-08 4.6181 4.4320 0.1861 16614.7 16450.5 9852.0 10154784 0.0183 97.7%36.4
12 7821102 15-Sep-08 22-Sep-08 4.7219 4.4552 0.2667 16782.4 166141 10064.4 10373.712 0.0257 99.8%36.4
13 7820496 22-Sep-08 29-Sep-08 4.7333 4.3852 03481 16953.2 16782.4 10248.6 10.563.573 0.0330 101.7%36.4
Totals 91 2184.0 4.738977 4.481838 0.2571 7797800 131064 136472460 0.0244 100.0%36.8
Period June 30 2008 through September 29 2008 3rd Quarter 2008 Page
BHV-6 on stream 100.0%BHV-6 Total Volume 4.82E06
Week Filter Start Stop Stop Start Total Total Loading Per Cent
Number Date Date Gross Tare Net Time Time Time Liters mg/m3 On Stream SCFM
7821167 30-Jun-08 07-Jul-08 4.7945 4.5837 0.2108 14584.8 14416.0 10130.4 10.470426 0.0201 100.5%36.5
7821161 07-Jul-08 14-Jul-08 4.7862 4.5642 0.2220 14754.0 14584.8 10149.6 10633.973 0.0209 100.7%37.0
7821155 14-Jul-08 21-Jul-08 4.7567 4.5433 0.2134 14917.9 14754.0 9832.8 10302054 0.0207 97.5%37.0
7821149 21-Jul-08 28-Jul-08 4.6827 4.5392 0.1435 15085.8 14917.9 10075.8 10556651 0.0136 100.0%37.0
7821143 28-Jul-08 04-Aug-08 4.6518 4.4426 0.2092 15258.6 15085.8 10366.2 10860910 0.0193 102.8%37.0
7821137 04-Aug-08 11-Aug-08 4.6119 4.4980 0.1139 15421.5 15258.6 9777.6 10244220 0.0111 97.0%37.0
7821131 11-Aug-08 18-Aug-08 4.6763 4.4605 0.2158 15590.8 15421.5 10158.6 10614.636 0.0203 100.8%36.9
7821125 18-Aug-08 25-Aug-08 4.6859 4.5073 0.1786 15756.5 15590.8 9937.8 10383924 0.0172 98.6%36.9
7821119 25-Aug-08 01-Sep-08 4.6173 4.4334 0.1839 15948.8 15756.5 11536.8 12054706 0.0153 114.5%36.9
10 7821113 01-Sep-08 08-Sep-08 4.5828 4.4299 0.1529 16097.4 15948.8 8920.8 9.245.487 0.0165 88.5%36.6
11 7821107 08-Sep-08 15-Sep-08 4.5941 4.4384 0.1557 16261.9 16097.4 9867.6 10170.863 0.0153 97.9%36.4
12 7821101 15-Sep-08 22-Sep-08 4.6640 4.4588 0.2052 16429.7 16261.9 10066.2 10375567 0.0198 99.9%36.4
13 7820495 22-Sep-08 29-Sep-08 4.6417 4.4012 0.2405 16600.4 16429.7 10246.2 10.561099 0.0228 101.6%36.4
Totals 91 2184.0 4.672762 4.484654 0.1881 131066.4 136.474515 0.0179 100.0%36.8
ALL BHV on stream 98.3%
Week Start Stop
Blanks Date Date Net
7821166 30-Jun-08 07-Jul-08 4.5624
7821160 07-Jul-08 14-Jul-08 4.5631
7821154 4-Jul-08 21-Jul-08 4.5620
7821148 21-Jul-08 28-Jul-08 4.4395
7821142 28-Jul-08 04-Aug-08 4.4350
7821136 04-Aug-08 1-Aug-08 4.4858
7821130 11-Aug-08 18-Aug-08 4.4742
7821124 18-Aug-08 25-Aug-08 4.4216
7821118 25-Aug-08 01-Sep-08 4.4371
10 7821112 01-Sep-08 08-Sep-08 4.4371
11 7821106 08-Sep-08 15-Sep-08 4.4311
12 7820500 15-Sep-08 22-Sep-08 4.4000
13 7820494 22-SeD-08 29-Seo-08 4.3944
Totals 2184.0 4.4649
Period September 29 2008 through December 29 2008 4th Quarter 2008 Page
BHV-1 ott stream 100.0%BHV-1 Total Volume 5.19E06
Week Filter Start Stop Stop Start Total Total Loading Per Cent
Number Date Date Gross Tare Net Time Time Time Liters mglm3 On Stream SCFM
7820493 29-Sep-08 6-Oct-08 4.6307 4.4550 0.1757 6860.0 6690.0 10197.6 10539882 0.0167 101.2%36.5
7820487 06-Oct-08 13-Oct-08 4.8234 4.4667 0.3567 7026.0 6860.0 9961.8 10437210 0.0342 98.8%37.0
7820481 13-Oct-08 20-Oct-08 4.6105 4.4500 0.1605 7193.4 7026.0 10044.6 10523962 0.0153 99.6%37.0
7820475 20-Oct-08 27-Oct-08 4.6581 4.4784 0.t797 7362.0 7193.4 10116.0 10598769 0.0170 100.4%37.0
7820469 27-Oct-08 3-Nov-08 4.6800 4.4356 0.2444 7532.7 7362.0 10245.0 10733926 0.0228 101.6%37.0
7820463 03-Nov-08 10-Nov-08 4.5713 4.4263 0.1450 7697.9 7532.7 9909.0 10381891 0.0140 98.3%37.0
7820457 10-Nov-08 17-Nov-08 4.5372 4.397t 0.1401 7868.8 7697.9 10256.4 10716827 0.0131 101.8%36.9
7820451 17-Nov-08 24-Nov-08 4.6155 4.3878 0.2277 8032.9 7868.8 9846.0 10288003 0.0221 97.7%36.9
7820445 24-Nov-08 1-Dec-08 4.5800 4.4375 0.1425 8202.7 8032.9 10184.4 10641595 0.0134 101.0%36.9
10 7820439 01-Dec-08 8-Dec-08 4.5042 4.4212 0.0830 8373.6 8202.7 10256.4 10629698 0.0078 101.8%36.6
II 7820432 08-Dec-08 16-Dec-08 4.6152 4.4281 0.1871 8537.7 8373.6 9843.0 10145507 0.0184 85.4%36.4
12 7820426 16-Dec-08 22-Dec-08 4.4759 4.4213 0.0546 8708.8 8537.7 10269.0 10584600 0.0052 118.9%36.4
13 7820420 22-Dec-08 29-Dec-08 4.5134 4.4676 0.0458 8875.0 8708.8 9973.8 10280327 0.0045 98.9%36.4
14 7820414 29-Dec-08 5-Jan-09 4.4576 4.3669 0.0907 9042.2 8875.0 10027.8 10335.987 0.0088 99.5%36.4
Totals 91 2184.0 4.601185 4.436354 0.1648 141130.8 136502196 0.0157 100.4%36.8
BHV-2 on stream 100.1%BHV-2 Total Volume 5.19E06
Week Filter Start Stop Stop Start Total Total Loading Per Cent
Number
7820492
Date
29-Sep-08
Date
6-Oct-08
Gross
4.8113
Tare
4.4600
Net
0.3513
Time
17050.9
Time
16879.8
Time
10269.0
Liters
10613678
mglm3
0.0331
On Stream
101.9%
SCFM
36.5
7820486 06-Oct-08 13-Oct-08 4.9449 4.4688 0.4761 17216.6 17050.9 9952.2 10427152 0.0457 98.7%37.0
7820480 13-Oct-08 20-Oct-08 4.6614 4.4515 0.4099 17384.2 17216.8 10045.8 10525219 0.0389 99.7%37.0
7820474 20-Oct-08 27-Oct-08 4.9329 4.4654 0.4675 17552.8 17384.2 10112.4 10.594997 0.0441 100.3%37.0
7820468 27-Oct-08 3-Nov-08 5.0146 4.3992 0.6154 17722.9 17552.8 10206.0 10693064 0.0576 101.3%37.0
7820462 03-Nov-08 10-Nov-08 4.7496 4.4273 0.3223 17889.3 17722.9 9985.2 10461727 0.0308 99.1%37.0
7820456 10-Nov-08 17-Nov-08 4.7340 4.4118 0.3222 18059.2 17889.3 10194.0 10651626 0.0302 101.1%36.9
7820450 17-Nov-08 24-Nov-08 5.1022 4.3979 0.7043 18223.6 18059.2 9863.4 10306184 0.0683 97.9%36.9
7820444 24-Nov-08 1-Dec-08 4.7154 4.4231 0.2923 18393.5 18226 10196.4 10654133 0.0274 101.2%36.9
10 7820438 01-Dec-08 8-Dec-08 4.6350 4.4348 0.2002 18563.9 18393.5 10223.4 10595497 0.0189 101.4%36.6
11 7820431 08-Dec-08 16-Dec-08 4.6900 4.4372 0.2528 18731.0 18563.9 10027.8 10335967 0.0245 87.0%36.4
12 7820425 16-Dec-08 22-Dec-08 4.4754 4.4172 0.0582 18899.1 18731.0 10084.2 10394120 0.0056 116.7%36.4
13 7620419 22-Dec-08 29-Dec-08 4.5089 4.4576 0.0513 19065.1 18699.1 9960.0 10266103 0.0050 98.8%36.4
14 7820413 29-Dec-08 5-Jan-09 4.5235 4.3970 0.1265 19233.0 19065.1 10072.8 10382370 0.0122 99.9%36.4
Totals 91 2184.0 4.782738 4.434754 0.3480 141192.6 136519488 0.0331 100.4%36.8
BHV-4 on stream 99.7%BHV-4 Total Volume 4.81 E06
Week Filter Start Stop Stop Start Total Total Loading Per Cent
Number Date Date Gross Tare Net Time Time Time Liters mg/m3 On Stream SCFM
7620491 29-Sep-08 6-Oct-08 4.6470 4.4558 0.1912 6860.8 6690.5 10217.4 10560346 0.0181 101.4%36.5
7820485 06-Oct-08 13-Oct-08 4.8277 4.4781 0.3496 7024.3 6860.8 9809.4 10277537 0.0340 97.3%37.0
7820479 13-Oct-08 20-Oct-08 4.6900 4.4528 0.2372 7194.9 7024.3 10232.4 10720724 0.0221 101.5%37.0
7820473 20-Oct-08 27-Oct-08 4.7113 4.4719 0.2394 7359.1 7194.9 9851.4 10321542 0.0232 97.7%37.0
7820467 27-Oct-08 3-Nov-08 4.6853 4.4146 0.2707 7532.1 7359.1 10383.6 10879140 0.0249 103.0%37.0
7820461 03-Nov-08 10-Nov-08 4.5290 4.4263 0.1027 7695.3 7532.1 9788.4 10255535 0.0100 97.1%37.0
7820455 10-Nov-08 17-Nov-08 4.5569 4.4210 0.1359 7868.0 7695.3 10363.8 10829048 0.0125 102.8%36.9
7820449 17-Nov-08 24-Nov-08 4.6119 4.4028 0.2091 8032.6 7868.0 9874.8 10318096 0.0203 98.0%36.9
7820443 24-Nov-08 1-Dec-08 4.4885 4.4114 0.0771 8203.5 8032.6 10255.8 10716200 0.0072 101.7%36.9
10 7820437 01-Dec-08 8-Dec-08 4.5161 4.4322 0.0839 8367.0 8203.5 9808.2 10165185 0.0083 97.3%36.6
11 7820430 08-Dec-08 16-Dec-08 4.5951 4.4483 0.1468 8532.1 8367.0 9908.4 10212917 0.0144 86.0%36.4
12 7820424 16-Dec-08 22-Dec-08 4.4874 4.4185 0.0689 8702.4 8532.1 10221.0 10535124 0.0065 118.3%36.4
13 7820418 22-Dec-08 29-Dec-08 4.3825 4.3478 0.0347 8868.9 8702.4 9985.2 10292.077 0.0034 99.1%36.4
14 7820412 29-Dec-08 5-Jan-09 4.4816 4.4004 0.0812 9037.6 8868.9 10122.6 10720340 0.0076 100.4%37.4
Totals 91 2184.0 4.594515 4.429346 0.1652 130699.8 136083473 0.0158 100.1%36.8
BHV-5 on stream 99.7%BHV-5 Total Volume 5.18E06
Week Filter Start Stop Stop Start Total Total Loading Per Cent
Number Date Date Gross Tare Net Time Time Time Liters mg/m3 On Stream SCFM
7820490 29-Sep-08 6-Oct-08 4.6842 4.4426 0.2416 17123.3 16953.2 10205.4 10.547943 0.0229 101.2%36.5
7820484 06-Oct-08 13-Oct-08 4.8996 4.4512 0.4484 17287.4 17123.3 9843.6 10.313369 0.0435 97.7%37.0
7820478 13-Oct-08 20-Oct-08 4.7341 4.4715 0.2626 17457.3 17287.4 10195.8 10682378 0.0246 101.1%37.0
7820472 20-Oct-08 27-Oct-08 4.8089 4.4719 0.3370 17621.7 17457.3 9861.6 10332228 0.0326 97.8%37.0
7820466 27-Oct-08 3-Nov-08 5.0185 4.4094 0.6091 17794.5 17621.7 10371.0 10865939 0.0561 102.9%37.0
7820460 03-Nov-08 10-Nov-08 4.6035 4.4109 0.1926 17958.3 17794.5 9828.6 10297654 0.0187 97.5%37.0
7820454 10-Nov-08 17-Nov-08 4.4319 4.4102 0.0217 18131.2 17958.3 10370.4 10835944 0.0020 102.9%36.9
7820448 17-Nov-08 24-Nov-08 4.4142 4.4103 0.0039 18295.2 18131.2 9843.6 10285495 0.0004 97.7%36.9
7820442 24-Nov-08 1-Dec-08 4.4263 4.4236 0.0027 18465.8 18295.2 10237.8 10.697392 0.0003 101.6%36.9
10 7820436 01-Dec-08 8-Dec-08 4.5802 4.4277 0.1525 18629.2 18465.8 9804.0 10.160832 0.0150 97.3%36.6
11
12
7820429
7820423
08-Dec-08
16-Dec-08
16-Dec-08
22-Dec-08
4.6437
4.5232
4.4393
4.4328
0.2044
0.0904
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18964.2
18629.2
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9874.8
10219.8
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13 7820417 22-Dec-08 29-Dec-08 4.4176 4.3359 0.0817 19130.4 18964.2 9976.8 10283419 0.0079 99.0%36.4
14 7820411 29-Dec-08 5-Jan-09 4.5540 4.3972 0.1568 19299.0 19130.4 10114.2 10711.444 0.0146 100.3%37.4
Totals 91 2184.0 4.629685 4.425946 0.2037 140747.4 136014767 0.0194 100.0%36.8
Period September 29 2008 through December 29 2008 4th Quarter 2008 Page
BHV-6 on stream 99.7%BI-IV-6 Total Volume 5.1 8E06
Week Filter Start Stop Stop Start Total Total Loading Per Cent
Number Date Date Gross Tare Net Time Time Time Liters mg/m3 On Stream SCFM
7820489 29-Sep-08 6-Oct-08 4.6461 4.4750 0.1711 16770.7 16600.4 10213.8 10556625 0.0162 101.3%36.5
7820483 06-Oct-08 13-Oct-08 4.7721 4.4430 0.3291 16934.2 16770.7 9813.6 10.281938 0.0320 97.4%37.0
7820477 13-Oct-08 20-Oct-08 4.6518 4.4604 0.1914 17104.6 16934.2 10223.4 10711295 0.0179 101.4%37.0
7820471 20-Oct-08 27-Oct-08 4.6855 4.4613 0.2242 17269.0 17104.6 9860.4 10330971 0.0217 97.8%37.0
7820465 27-Oct-08 3-Nov-08 4.7254 4.4275 0.2979 17441.9 17269.0 10378.8 10874111 0.0274 103.0%37.0
7820459 03-Nov-08 10-Nov-08 4.5410 4.4180 0.1230 17605.2 17441.9 9796.2 10263707 0.0120 97.2%37.0
7820453 10-Nov-08 17-Nov-08 4.5673 4.4188 0.1485 17778.3 17605.2 10383.0 10849110 0.0137 103.0%36.9
7820447 17-Nov-08 24-Nov-08 4.6160 4.4148 0.2012 17942.6 17778.3 9858.6 10301169 0.0195 97.8%36.9
7820441 24-Nov-08 1-Dec-08 4.5300 4.4146 0.1154 18113.4 17942.6 10248.0 10708050 0.0108 101.7%36.9
10 7820435 01-Dec-08 8-Dec-08 4.5466 4.4217 0.1249 18277.3 18113.4 9834.6 10192546 0.0123 97.6%36.6
11 7820428 08-Dec-08 16-Dec-08 4.6457 4.4413 0.2044 18442.1 18277.3 9888.6 10192509 0.0201 85.8%36.4
12 7820422 16-Dec-08 22-Dec-08 4.5146 4.4433 0.0713 18612.4 18442.1 10219.2 10533269 0.0068 118.3%36.4
13 7820416 22-Dec-08 29-Dec-08 4.4403 4.3669 0.0734 18778.7 18612.4 9976.8 10283419 0.0071 99.0%36.4
14 7820410 29-Dec-08 5-Jan-09 4.5228 4.3874 0.1354 18947.5 18778.7 10126.2 10.724.153 0.0126 100.5%37.4
Totals 91 2184.0 4.606338 4.431277 0.1751 140821.2 136078719 0.0167 100.1%36.8
ALL BHV on stream 99.9%
Week Start Stop
Blanks Date Date Net
7820488 29-Sep-08 6-Oct-08 4.4857
7820482 06-Oct-08 13-Oct-08 4.4415
7820476 13-Oct-08 20-Oct-08 4.4852
7820470 20-Oct-08 27-Oct-08 4.4507
7820464 27-Oct-08 3-Nov-08 4.4172
7820458 03-Nov-08 10-Nov-08 4.4050
7820452 10-Nov-08 17-Nov-08 4.4022
7820446 17-Nov-08 24-Nov-08 4.4200
7820440 24-Nov-08 1-Dec-08 4.4306
10 7820433 01-Dec-08 8-Dec-08 4.4083
11 7820427 08-Dec-08 16-Dec-08 4.4230
12 7820421 16-Dec-08 22-Dec-08 4.4525
13 7820415 22-Dec-08 29-Dec-08 4.3768
14 7820409 29-Dec-08 5-Jan-09 4.4014
Totals 91 2184.0 4.4307
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White Mesa Mifi Third Quarter 2008 Environmental Spherical Gamma Monitor Resu
Mean
Total Days Ambient
Badge Date Date Badge at Dose mRem mRem
Number Location Issued Returned WMM Equivalent hour Day
Control Administration Vault 7/9/2008 10/2/2008 85 32.5 0.02 0.382
V205 Control Room 7/9/2008 10/2/2008 85 55.5 0.03 0.653
BHV-6 7/9/2008 10/2/2008 85 27.4 0.01 0.322
Ore Stor Molycorp Area 7/9/2008 10/2/2008 85 296.3 0.15 3.486
Vanadium Precip.Area 7/9/2008 10/2/2008 85 62.4 0.03 0.734
Yellocake Drying Area 7/9/2008 10/2/2008 85 114.4 0.06 1.346
Leach 7/9/2008 10/2/2008 85 180.4 0.09 2.122
SAG Mill Control Room 7/9/2008 10/2/2008 85 306.6 0.15 3.607
Yellowcake Precip 7/9/2008 10/2/2008 85 102 0.05 1.200
Central Control Room 7/9/2008 10/2/2008 85 63 0.03 0.741
10 Trommel Screen ore pad 7/9/2008 10/2/2008 85 263.5 0.13 3.100
11 Barrel Dumping Station 7/9/2008 10/2/2008 85 331.2 0.16 3.896
12 Met Lab 7/9/2008 10/2/2008 85 57.4 0.03 0.675
13 Filter Press Room 7/9/2008 10/2/2008 85 156.6 0.08 1.842
14 BHV-1 7/9/2008 10/2/2008 85 31.7 0.02 0.373
15 BHV-2 7/9/2008 10/2/2008 85 29.5 0.01 0.347
16 BHV-3 7/9/2008 10/2/2008 85 30.2 0.01 0.355
17 BHV-4 7/9/2008 10/2/2008 85 30.2 0.01 0.355
18 BHV-5 7/9/2008 10/2/2008 85 29.5 0.01 0.347
19 SAG Mill 7/9/2008 10/2/2008 85 206.6 0.10 2.431
20 Tails 7/9/2008 10/2/2008 85 74.5 0.04 0.876
21 CCD 7/9/2008 10/2/2008 85 65.3 0.03 0.768
22 North SX 7/9/2008 10/2/2008 85 60.9 0.03 0.7 16
23 Administration Building 7/9/2008 10/2/2008 85 34.2 0.02 0.402
24 Admin Parking Lot 7/9/2008 10/2/2008 85 96.3 0.05 1.133
25 Yellowcake Packaging 7/9/2008 10/2/2008 85 1397.7 0.69 16.444
26 Yellowcake Storage 7/9/2008 10/2/2008 85 249.7 0.12 2.938
27 Bucking Room 7/9/2008 10/2/2008 85 106.8 0.05 1.256
28 Mill Lunch Room 7/9/2008 10/2/2008 85 62.5 0.03 0.735
29 South SX 7/9/2008 10/2/2008 85 109.8 0.05 1.292
30 Mtce Super.s Office 7/9/2008 10/2/2008 85 44.2 0.02 0.520
31 Ore Feed Grizzly 7/9/2008 10/2/2008 85 306.7 0.15 3.608
32 Scalehouse 7/9/2008 10/2/2008 85 237.8 0.12 2.798
33 Sample Plant OBS 7/9/2008 10/2/2008 85 276.1 0.14 3.248
34 Front Gate 7/9/2008 10/2/2008 85 176.8 0.09 2.080
35 Arizona Travel Way 7/9/2008 10/27/2008 110 34.2 0.01 0.311
36 Arizona Travel Way 7/9/2008 10/27/2008 110 30.7 0.01 0.279
37 Arizona Travel Way 7/9/2008 10/27/2008 110 33.7 0.01 0.306
38 Arizona Travel Way 7/9/2008 10/27/2008 110 30.6 0.01 0.278
39 Arizona Travel Way 7/9/2008 10/27/2008 110 34.8 0.01 0.316
40 Arizona Travel Way 7/9/2008 10/27/2008 110 36.2 0.01 0.329
41 Arizona Travel Way 7/9/2008 10/27/2008 110 31.3 0.01 0.285
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ENERGYLAHORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258 Casper WV82602
Toll Free 888.235 0515 3072350515 Fax [phone] casperenergyIab.corn www.energy/aA corn
LABORATORY ANALYTICAL REPORT
Client Denison Mines USA Corp Report Date 01/17/09
Project Vegetation Collection Date 12/12/08
Lab ID C08120574-001 DateReceiveci 12/16/08
Client Sample ID South West Matrix Vegetation
MW
Aralyses Result Units Qualifiers RI QCL Method Analysis Date By
RADIONUCLI DES TOTAL
Lead 210 4.1 E-04 uCi/kg E909.OM 01/05/09 1700/dm
Lead 210 precision 3.OE-05 uCi/kg E909.OM 01/05/09 1700/dm
Lead 210 MDC 4.OE-05 uCi/kg E909.OM 1/05/09 1700 dm
Radium 226 9.2E-05 uCi/kg E903.0 01/06/09 0132 trs
Radium 226 precision 4.1E-06 uCi/kg E903.0 01/06/09 0132 /trs
Radium 226 MDC 9.6E-07 uCi/kg E903.0 01/06/09 0132 /trs
Report RL Analyte reporting limit MCL Maximum contaminant level
Definitions QCL Quality control limit ND Not detected at the reporting limit
MDC Minimum detectable concentration
EISERCYLA
EIERCY
A/bRA TORIES
ENERGYLASORA TORIES INC 2393 Sail Creek Hihway 82601 P0 Sax 3258 Caspe4 WV82602
Tall Free 888.235.0515 307235.0515 Fax [phone] caspeitenergy/ab.cam wwwenergylab.cam
LABORATORY ANALYTICAL REPORT
Denison Mines USA Corp Report Date 01/17/09
Collection Date 12/12/08
DateReceived 12/16/08
Matrix Vegetation
Client
Project Vegetation
Lab ID C08120574-001
Client Sample ID South West
MCL
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
RADIONUCLIDES TOTAL
Lead 210 412 pCi/kg E909.OM 01/05/09 1700 dm
Lead 210 precision 30.0 pCi/kg E909.OM 01/05/09 1700 dm
Lead 210 MDC 40.3 pCi/kg E909.0M 01/05/09 1700 /dm
Radium 226 92.3 pCi/kg E903.0 01/06/09 0132 trs
Radium 226 precision 4.1 pCi/kg E903.0 01/06/09 0132 trs
Radium 226 MDC 96 pCi/kg E9030 01/06/09 0132 trs
Report RL Analyte reporting limit MCL Maximum contaminant level
Definitions QCL Quality control limit ND Not detected at the reporting limit
MDC Minimum detectable concentration
ENERO YLABORA TORIES INC 2393 Sail CieekHihway 82601 PC Box 3258 Caspa4 WV82602
____________Toil fteo 888.235.0515 307235.0515 Pa 307234.1639 casper-energy/ab.com-wwwenergy/ab.com19TORIES
LABORATORY ANALYTICAL REPORT
Client
Project
Lab ID
Client Sample ID
Denison Mines USA Corp
Vegetation
C081 20574-003
North East
Report Date 01/17/09
Collection Date 12/12/08
DateReceived 12/16/08
Matrix Vegetation
MCL
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
RADIONUCLIDES TOTAL
Lead 210
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
3.6E-04
2.9E-05
3.9E-05
1.5E-04
5.2E-06
9.9E-07
uCi/kg
uCi/kg
uCi/kg
uCi/kg
uCi/kg
uCi/kg
E909.OM
E909.OM
E909.OM
E903.O
E903.O
E903.0
01/05/09 1700/dm
01/05/09 1700 1dm
01/05/09 1700 /dm
01/06/09 0132 trs
01/06/09 0132/trs
01/06/090132/trs
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MDC Minimum detectable concentration
MCL Maximum contaminant level
ND Not detected at the reporting limit
ENERGYLASORA TORIES INC 2393 Sail Creek Hiqbway 82601 P0 Box 3258 Caspe WV82602
Toll Free 888.235.0515 3072350515 Fn 307234.1639 casperenergy/ab.corn nwwenergy/ab.com
LABORATORY ANALYTICAL REPORT
Client Denison Mines USA Corp Report Date 01/17/09
Project Vegetation Collection Date 12/12/08
Lab ID C08120574-003 DateReceived 12/16/08
Client Sample ID North East Matrix Vegetation
MCLJ
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
RADIONUCUDES TOTAL
Lead 210 357 pCi/kg E909.OM 01/05/09 1700 /dm
Lead 210 precision 28.5 pCi/kg E909.OM 01/05/09 1700 dm
Lead 210 MDC 38.9 pCi/kg E909.OM 01/05/09 1700 /dm
Radium 226 145 pCi/kg E903.O 01/06/09 0132/trs
Radium 226 precision 5.2 pCi/kg E903.0 01/06/09 0132 trs
Radium 226 MDC 0.99 pCi/kg E903.0 01/06/09 0132 trs
Report RL Analyte reporting limit MCL Maximum contaminant level
Definitions QCL Quality control limit ND Not detected at the reporting limit
MDC Minimum detectable concentration
E1SERGY
L/V$CRA TORIES
EAERGY
LASORA TORIES
Client
Project
Lab ID
Client Sample ID
ENERGYLASORA TORIES INC 2393 Sail CreekHibway 82601 P0 Box 3258 Caspe.c WV82602
Toll Free 888.2350515 307235.0515 Far 307234.1639 [e-mail] wwwenergylab.com
LABORATORY ANALYTICAL REPORT
Denison Mines USA Corp Report Date 01/17/09
Vegetation Collection Date 12/12/08
C081 20574-002 DateReceived 12/16/08
North West Matrix Vegetation
MCL
Analyses Result Units Qualifteis RL QCL Method Analysis Date By
RADIONUCLIDES-TOTAL
Lead 210 4.4E-04 uCi/kg E909.OM 01/05/09 1700 dm
Lead 210 precision 2.5E-05 uCi/kg E909.OM 01/0509 1700 dm
Lead 210 MDC 3.2E-05 uCi/kg E909.OM 01/05/09 1700 dm
Radium 226 7.3E-05 uCi/kg E903.0 01/06/09 0132 trs
Radium 226 precision 3.2E-06 uCi/kg E903.0 01/06/09 0132 trs
Radium 226 MDC 7.4E-07 uCi/kg E903.0 01/06/09 0132 trs
Report RL Analyte reporting limit MCL Maximum contaminant level
DefinitIons QCL Quality control limit ND Not detected at the reporting limit
MDC Minimum detectable concentration
ENERO YLABORA TORIES INC 2393 Sail Creek Hi/iway 82601 PU Box 3258 Caspe WY82602
Toll Free 888.235.0515 307235 0515 Fa 3072341639 casperenergy/ab.com nvwenergylab.comEIERCV
LA flORA TORIES
LABORATORY ANALYTICAL REPORT
Client Denison Mines USA Corp Report Date 01/17/09
Project Vegetation Collection Date 12/12/08
Lab ID C081 20574-002 DateReceivod 12/16/08
Client Sample ID North West Matrix Vegetation
MCL
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
RADIONUCLI DES TOTAL
Lead 210 435 pCi/kg E909.OM 01/05/09 1700/dm
Lead 210 precision 25.3 pCi/kg E909.OM 01/05/09 1700 /dm
Lead 210 MDC 32.0 pCi/kg E909.OM 01/05/09 1700/dm
Radium 226 72.7 pCi/kg E903.0 01/06/09 0132 trs
Radium 226 precision 3.2 pCi/kg E903.0 01/06/09 0132 trs
Radium 226 MDC 0.74 pCi/kg E903.0 01/06/09 0132 trs
Report RL Analyte reporting limit MCL Maximum contaminant level
Definitions QCL Quality control limit ND Not detected at the reporting limit
MDC Minimum detectable concentration
INTERNATIONAL URANIUM CORP
WHITE MESA MILL
FORAGE RADIONUCLIDE OATA
SOUTH WEST OF MILL
SAMPLED
DATE
Ra-226 Ra-226 LLD
VALUE ERROR uCi/Kg
uCi/Kg uCi/Kg 5.0E-08
Pb-210 Pb-210 LLD
VALUE ERROR uCi/Kg
uCi/Kg uCi/Kg .0E-06
27-Aug-81 9.50E-0 2.OE-05 5.OE-08 .50E-04 .OE 05 .OE-06
21-Oct-81 3.OOE-0 3.OE-06 5.OE-08 .50E-04 2.OE-05 .OE-06
15-Apr-82 1.37E-0 3.OE-06 3.OE-06 3.80E-04 4.OE 05 4.OE 05
01-Jul-82
30-Nov-82
14-Apr-83
01-Jul-83
30-Jan-84
3.40E
.75E-0
7.13E-0
5.39E-0
6.40E-0
2.0E-05
3.0E-06
7.3E-05
4.SE-06
tOE 06
5.OE-08
2.OE-06
9.OE-08
2.OE-06
4.OE-0b
3.68E-03
7.92E-04
2.51E-03
6.88E-04
.uoE-tia
2.7E-04
4.OE-06
3.OE-04
4.3E-05
.OE-04
.OE-07
2.OE-05
3.OE-04
4.OE-05
4.OE-05
28-Jun-84 8.27E-0 6.3E-06 3.OE-09 .80E-03 .OE-04 9.OE-08
14-Nov-84 2.72E-0 .5E-04 2.OE 07 4.70E-03 7.2E-04 3.OE-07
27-Mar-85 4.73E-0 .6E 07 3.0E-06 7.07E-04 3.6E-05 3.OE-05
15-Jul-85
09-Oct-85
24-Mar86
10 Jul 86
18 Dec-86
6.60E-0
2.83E-0
1.57E-0
3.78E-0
2.60E-0
7.OE-06
2.OE-05
1.OE-05
.OE-05
4.0E 06
7.OE-06
4.OE-06
2.OE 06
4.90E-04
.50E-03
4.14E 03
.65E-02
3.OE-05
.OE-04
1.8E-04
7.OE-04
1.OE-04
3.OE-05
7.0E-05
3.0E-05
.0E-04
1.OE-042.OE-05 2.0E06 1.70E-03
20-Apr-87 4.1 OE-0 7.OE-05 5.OE-08 2.20E-03 .OE 04 .OE-06
05-Jun-87 2.90E-0 4.OE-05 5.OE-08 7.50E-04 5.OE-05 .OE-06
22-Dec-87
19-Apr-88
28-Jul-88
07-Apr-89
06-Jun-89
.80E-0
2.30E-0
.SOE-0
3.1OE-0
.30E-0
3.0E-05
5.0E-05
3.OE-05
4.OE-05
2.OE-05
5.OE-08
5.OE-08
5.OE-08
2.40E-03 CE 04 .OE 06
2.90E 03
4.30E-03
4.20E-03
.50E-03
1.OE 04
2.0E 04
1.OE 04
.OE-04
1.OE-06
.OE-06
07-Nov-89 4.30E 5.OE-05 .4E-05 3.50E-03 .4E-04 2.7E-05
28-Mar-90 2.50E 3.OE-05 5.OE-06 2.39E-03 5.OE-05 2.SE 05
13-Jun-90 1.IOE-0 2.OE 05 5.OE-08 6.60E-04 3.OE-05 1.OE-06
23-Oct-90
10-Apr-91
11-Jun-91
20-Nov-91
22 Apr-92
6.IOE-0
3.40E-0
8.OOE-0
6.50E-0
.60E-0
1.4E-05
liE-OS
6.OE 06
1.4E 05
7.OE-06
5.OE-08
5.OE-06
2.OE-07
5.OE-08
2.OE 06
6.1OE-04
2.20E-04
1.20E-04
9.10E-04
3.20E-04
3.OE-05
1.OE-05
1.OE-05
5.OE-05
2.OE-05
I.OE-06
1.OE-06
2.OE-07
1.OE-06
.OE-05
10-Jun 92 .90E-0 .OE-05 2.OE 07 2.20E-04 2.OE-05 .OE-06
08 Dec 92 .60E-0 .8E-05 3.OE 06 7.60E-04 6.OE-05 2.OE-05
13 Apr-93 2.60E-0 2.OE-05
.4E-05
1.6E-05
5.OE-06
1.7E-06
3.OE 06
3.OE 06
3.OE-06
3.OE-05
7.6E-08
3.40E-04 3.OE-05 2.OE-05
27 Jun-93
27Oct93
01-May94
19Jul94
16-Nov94
3.OOE-0
3.1OE-0
2.OOE-0
1.75E-0
1.OOE-0
0.OOE00
4.20E 04
3.90E 04
1.30E 04
3.OE-05 2.OE-05
6.OE-05 2.OE-05
8.OE-05 2.OE-04
7.8E-06 3.8E-07
1.2E-OS 7.4E-079.OE-06 SE 07 2.60E 04
05-Apr-95 .70E-0 .SE-06 .6E-07 .60E-04 SE-OS 8.1 E-07
07-Jul-95 6.40E 6.OE-07 .4E-07 4.40E 05 4.2E 06 7.OE-07
09-Nov-95
24-Apr96
31-Jul-96
14-Nov-96
21-Apr-97
2.30E-0
4.20E-O
2.1OE-O
5.50E-0
2.2E-06
2.2E-06
2.OE-06
4.2E-07
1.7E-07
.7E-07
1.6E-07
I.4E-07
6.60E 05 9.6E 06 6.3E-07
.OOE 04
1.90E 04
3.30E 05
6.7E-06
7.3E 06
3.9E 06
.8E-07
8.2E-07
7.OE-07
OS-Sep-97 5.30E-06 3.2E-07 .3E-07 .90E 05 6.9E-07 6.3E-07
20-Nov 97 2.50E-0 9.58-07 5.9E-07 .30E-04 4.76-06 1.26-07
26-Mar-98 7.90E-05 7.96-OS 7.9E-05 3.90E 04 3.9E-04 3.96-04
16-Jun-98 3.60E-0 1.46-07
1.06-06
1.06-06
8.66-07
3.06-06
2.06-06
3.36-08
6E-08
.2E 07
1.2E 07
2.OE 07
I.2E-07
1.7E 07 1.7E-07 1.76-07
09-Nov98
15 Apr99
07 Jul 99
07-Dec99
21 Apr00
4.30E-0
2.40E-0
2.236-0
.50E-O
1.006-0
2.SOE 04
.70E-04
2.30E-04
.70E-05
1.1OE-04
.OE-05
8.OE-06
7.06-06
1.06-06
7.OE-06
3.86-07
6.26-07
5.9E-07
1.06-06
6.16-07
22 Jun-00 1.30E-O 1.06-07 2.4E 07 2.006-04 1.06-05 1.26-06
21 Dec-00 1.206-0 9.OE-07 2.4E-07 1.206-04 3.06-05 1.26-06
30 Apr-01 1.806-0 .OE-07 .7E-07 8.36-07 N/A 8.36-07
14 Jun-01
17 Dec-01
07-May-02
07-Jul-02
15-Dec-02
2.606-06
2.636-06
3.506-0
4.02E-0
8.106-OS
2.OE-07
4.6E-05
2.2E-06
2.3E 06
3.9E-06
9.9E 08
1.2E-07
7.6E-07
7.66-07
7.66-07
1.1OE-06
9.406-05
1.366-04
7.04E-05
2.876-04
2.06-08
3.7E-06
5.66-06
4.1 E-06
8.SE-06
5.06-07
6.06-07
.OE OS
.OE 05
1.OE-05
21-Mar-03 3.706-OS 2.6E 06 2.4E-06 2.69E-OS 2.06-06 3.7E-06
O-Jun-03 .30E-05 .OE-06 5.26-07 .00E-07 .OE 07
20-Nov-03 .60E 04 1.36-05 1.2E-07 .42E-04 6.4E 06 5.9E-07
08-Apr-04
2-Jun-04
30-Nov-04
21-Apr OS
13 Jun-OS
10 Nov-OS
1.40E-04
6.51 05
8.40E-05
1.706-05
1.506-05
3.806-0
7.76-06
3.26-06
5.76-06
1.6E-06
I.6E 06
2.1 E-06
1.16-07
.SE-07
3.OE-08
1.3E 07
1.4E 07
8.6E-1
6.1OE-06
5.27E 05
3.39E-04
4.506-05
7.006-05
1.206-06
2.7E-06 5.56-07
4.9E 06
.6E-05
3.56-06
5.16-06
4.86-08
7.6E-07
3.OE-07
6.56-07
6.96-07
4.36-10
03 Apr-06 .006-04 6.OE-06 5.OE-08 3.306-04 1.16-OS .OE-06
16-Jun-06 3.406-05 2.5E-O6 S.OE-08 1.37E-04 6.OE 06 i.OE 06
12 Dec-08 9.20E-051 3.OE-05 4.OE-05 9.206-05 4.16-06 9.6E-O7
INTERNATIONAL URANIUM CORP
WHITE MESA MILL
FORAGE RADIONUCLIDE DATA
NORTH EAST OF MILL
Ra-226 Ra-226 LLD
SAMPLED VALUE ERROR uCi/Kg
DATE uCi/Kg uCi/Kg SUE 08
27-Aug-81 3.90E-04 1.06-05 5.06-08
20-Oct-81 1.406-04 1.05-05 5.OE-08
15-Apr-82 1.31 6-04 1.35-05 .OE-06
P5-210 P5-210 LLD
VALUE ERROR uCi/Kg
uCi/Kg uCr/Kg .0E-06
1.10E-03 1.0E-04 1.OE-06
6.80E-04 8.0E-05 .OE 06
4.90E-04 7.OE-05 8.0E-05
01-Jul-82 1.605-04 1.05-05 5.0E-08 8.006-04 1.76-04 1.06-07
30-Nov-82 2.876-06 1.1 E-06 1.05-06 1.085-04 9.05-06 1.06-05
13-Apr-83 9.386-05 6.2E-08 8.05-09 4.975-04 9.35-05 1.05-04
01-Jul-83 1.125-04
30-Jan-84 .09E-04
28 Jun 84 3.47E 04
14 Nov84 5.61 04
1.26-05 8.05-06
8.OE-08 4.06-06
.2E-05 2.OE-09
2.OE-04 2.OE-07
3.OE-05 2.OE-06
1.846-04
7.805-04
3.756-03
7.82E-03
3.22E-03
1.2E-05
6.26-05
1.66-04
3.3E-04
1.46-04
1.05-06
8.05-05
4.06-08
7.06-08
2.OE-0527-Mar-85 .05E-03
15-Jul85 8.20E 05 7.OE 06 3.OE-06 7.706-04 1.36-04 2.06-04
09Oct85 1.1SE 04 iCE-OS 3.OE-06 SlOE 04 3.06-05 2.06-05
24-Mar-86 5.72E 04 2.1E-05 4.OE-06 2.49E 03 1.OE-04 1.OE 05
10-Jul-86 SOlE 04
18-Dec-86 8.70604
20-Apr-87 5.90E 04
05-Jun-87 1.606-04
1.3E 05 3.OE-06
5.06-05 3.06-06
7.06-05 5.06-08
3.OE-O5 5.06-08
1.57E 03
6.80604
1.506 03
9.SOE-04
1.7E-03
3.06-05
1.0604
4.06-OS
2.OE-04
3.06-06
1.06 06
1.06 06
22-Dec-87 2.106-04 4.06-OS 5.06-08 1.706-03 1.06-04 1.06 06
19-Apr-88 4.506-04 7.06-OS 5.06-08 1.406-03 1.0604 1.06-06
28-Jul-88 3.206-05 2.26-OS 5.06-08 506-04 4.46 04 1.06-06
07-Apr-89 5.606-04
06-Jun-89 1.506-04
07-Nov-89 OOF-04
17-Apr-90 2.606-04
20-Jun-90 1.806-04
4.06-05
2.06-05
OF-OS
3.06-05
2.06-05
OF-08
4.06-06
5.06-08
1.106-03
2.306-04
04F-O3
3.30E-04
3.206-04
1.06-01
2.06-05
OF-OS
2.06-OS
2.06-05
46-05
2.26-05
1.06-06
17-Oct 90 1.606-04 2.06 05 S.0E-08 3.306-04 2.06-05 1.06-06
10Apr91 1.206-04 2.0605 S.OE-06 3.006-04 2.06-05 1.06-06
11-Jun-91 9.106-05 1.6605 2.06-07 1.906-04 2.06-05 2.06-07
20-Nov-91 4.SOE 04
22Apr92 3.606-05
10Jun92 1.006-05
10-Jun-92 7.90605
4.06 05 5.06-08
1.06 05 2.06-06
7.06-06 2.0607
3.56-OS 3.06-06
1.096-03
1.506-04
7.506-05
7.106-04
5.06-05
2.06-OS
2.0605
7.06 05
1.06-06
1.06-OS
1.0606
2.06 05
13Apr93 3.70605 2.2605 3.0606 2.80604 3.0605 2.06-05
26 Jun-93 3.006 05 1.56-05 3.06 06 4.30605 3.56 05 2.06-OS
12 Oct-93 6.606-05 2.76-OS 3.06-06 S.30E-04 6.06-OS 2.06 05
11-May-94 1.806-04 4.06-05 3.06 OS 4.406-04 6.06 05 2.0604
19-Jul-94 1.71605
28-Nov-94 2.406-04
11-Apr-95 6.706-05
06-Jul-95 1.506-05
1.26-06
1.5605
5.46-06
1St-OS
9.06-08
1.7607
1.66 07
1.56-07
3.00605
1.70604
1406-04
5.1 06-OS
6.1606
1.1605
1.36-OS
4.56-06
4.5606
8.3607
7.96 07
7.66 07
15-Nov-95 S.S06-OS 5.06-06 1.86-07 6.706-05 1.06-OS 8.86 07
23-Apr-96 S.206-OS 2.56-06 1.56-07 3.206-05 4.S6-06 1.86 07
31-Jul-96
14-Nov-96
21-Apr-97
05-Sep-97
20-Nov-97
23-Mar-98
3.006-05 2.56-06
1.106-05 4.76-07
1.106-05 4.36-07
8.00606 1.2606
9.106-OS 9.16-OS
1.86-07
1.26-07
1.3607
5.6607
9.1 6-OS
1.406-04
4.106-OS
2.106-05
1.40604
4.506-04
7.16-06
3.66-06
7.36-07
4.6606
4.56-04
9.36 07
6.1607
6.7607
1.1607
4.5604
16-Jun-98 1.806-05 1.26-06 6.36-08 4.006-OS 1.86-06 3.2607
05-Nov-98 5.706-05 1.06-06 8.2608 8.706-OS 5.06-06 4.1607
15-Apr-99 2.006-04 3.0606 1.26 07 3.00604 1.06 05 6.0605
07-Jul-99
02-Dec-99
21-Apr-00
22-Jun-00
2lDec0O
6.036 05 1.4606
2.30605 1.0606
1.506-04 3.06-06
1.206 06 1.06 07
160606 11606
8.36 08
2.3607
1.26-07
2.86-07
37607
1.406 04 4.76 06 4.26 07
2.10605
1.606-04
1.606 04
510605
1.0606
8.06-06
1.06 05
50606
1.1606
5.9607
1.46-06
196-06
30Apr01 1.00606 1.0607 2.46-07 1.2606 1.0607 2.46-07
14 Jun-01 2.306 06 2.06 07 9.9608 3.806 06 2.0607 5.06-07
17Dec01 9.10606 2.4606 1.2607 3.576 OS 3.0606 6.06-07
07-May-02 3.306-05 1.86-06 7.66-07 4.506-05 2.66-06 1.06-05
07-Jul-02
S-Dec-02
21-Mar-03
10-Jun-03
20-Nov-03
5.556-05 2.86-06
7.756-05 3.66-06
9.106-06 1.36-06
2.506-05 1.36-06
5.706-05 3.S6-06
7.66-07
7.66-07
3.66-07
3.66-07
1.56-07
5.316-05
1.296-04
1.136-05
3.266-06
4.056-05
3.96-06
6.26-06
1.66-06
2.06-06
S.86-06
1.06-05
1.06-05
3.46-06
7.46-08
8.36-07
08-Apr-04 9.386-OS 3.76-06 1.16-07 S.886-OS 3.06-06 S.S6-O7
12-Jun-04 5.636-05 3.46-06 1.86-07 6.426-OS S.96-06 9.06-07
30-Nov-04 8.416-05 S.S06-O6 2.006-08 2.486-04 1.406-OS 3.006 07
21 Apr05 5.606-05 3.006-06 1.406-07 5.80605 4.00606 6.906-07
13Jun05 9.106-06 1.506-06 1.806-07 1.106-05 1.20605 9.006-07
10 NovOS 6.00605 3.006-06 1.106-10 1.70606 6.40607 S.S0E-1O
03 Apr 06 8.006-OS 5.006-06 5.006-08 3.406-04 1.206-05 1.006-06
16-Jun-06 4.106-05 3.106-06 5.006-08 1.165-04 6.106-06 1.006-06
12-Dec 08 1.506 04 5.20606 9.906-07 3.606 04 2.906 05 3.906-05
INTERNATIONAL URANIUM CORP
WHITE MESA MILL
FORAGE RADIONUCLIDE DATA
NORTH WEST OF MILL
SAMPLED
DATE
27-Aug-81
20-OcI-81
15-Apr-82
Ra-226 Ra-226 LLD
VALUE ERROR uCi/Kg
uCi/Kg uCi/Kg 5.0E-08
2.73E-03 5.0E-05 5.OE-08
2.OOE 04 .OE-05 5.06-08
1.04E-04 9.OE-06 7.0E 06
Pb-210 Pb-210 LLD
VALUE ERROR uCi/Kg
uCi/Kg uCi/Kg 1.06-06
7.10E-03 3.06-04 1.0E 06
8.306-04 5.06-05 .0E 06
6.406-04 5.OE-05 4.0E 05
01-Jul82 2.00E-05 1.0E-05 5.0E-08 2.20E-04 9.OE-05 1.0E-07
30-Nov82 2.36E-06 9.5E 07 1.06-06 8.OOE 05 .OE-05 1.06-05
13 Apr 83 8.586-05 .4E 05 2.06-08 3.53E-04 1.96-05 1.06 05
01-Jul-83
30 Jan-84
28-Jun 84
14-Nov 84
27-Mar8S
1.19E-04
9.78E-05
2.086-04
6.056-04
1.106-04
lIE 05
7.OE 06
1.06-05
.6E-04
8.06-06
5.08-06
2.06-06
3.06-09
2.06-07
3.06-06
1.58E-04
2.16E 03
.60E-03
2.586-03
8.63E-04
1.3E-05
3.4E-04
7.OE-05
1.1 E-04
4.26-05
1.OE 05
3.OE-04
3.OE-08
3.OE-08
3.OE-05
15-JuI-8S 6.106-05 6.OE 06 2.OE-06 5.406-04 5.06-05 SUE-OS
09-Oct-85 1.076-04 6.OE-06 2.OE-06 3.80E-04 3.06-05 2.OE-05
24-Mar-86 8.86E-04 .8E-05
1.8E-05
.OE-04
.OE-04
3.06-05
2.OE-06
3.OE-06
3.OE-06
5.OE-08
5.OE 08
4.40E-03
4.78E-03
.70E-03
.606-03
5.50E-04
.9E-04
2.1E-04
.OE 04
.OE 04
4.OE-05
3.OE-05
6.06-05
6.OE-05
.0E06
1.0E06
10-Jul-86
18-Dec-86
20-Apr-87
05-Jun-87
6.66E-04
5.206-04
4.1 OE-04
1.60E 04
22-Dec-87 3.60E 04 5.06-05 5.06 08 1.806-03 .OE 04 .OE-06
19-Apr-88 2.60E-04 5.06-05 5.OE 08 1.906-03 .OE-04 1.06-06
28-Jul-88 3.1OE-05 1.96-05 5.OE-08 1.60E-04 4.OE 05 1.OE-06
07-Apr-89
06-Jun-89
07-Nov-89
17-Apr-90
20-Jun-90
6.20E-04
3.40E-04
108-04
3.60E-04
.70E-04
5.OE-05
3.OE-05
OE-05
3.OE-05
2.OE-05
708-06
4.OE-06
5.OE-08
.70E-03
7.40E-04
OOE-03
4.80E-04
3.20E-04
.OE-04
3.OE-05
708-05
2.OE-05
2.OE-05
4E 05
2.2E 05
.OE 06
17 Oct90 8.80E-05 .6E 05 5.06-08 2.90E 04 2.OE-05 .06 06
10Apr91 3.006-04 3.06-05 5.06-06 4.1OE 04 2.OE-05 1.06-06
11 Jun-91 3.106-04 3.OE 05 2.OE-07 4.70E-04 2.06-05 2.06-07
1.06-06
.OE-05
1.OE-06
2.OE-05
20 Nov-91
22-Apr 92
10-Jun-92
10-Jun 92
13-Apr93
5.006-04
2.006-05
6.506-06
1.206-04
1.806-05
4.OE 05
8.OE-06
6.OE-06
4.OE-05
5.OE-08
2.06-06
2.OE-06
3.OE-06
.50E 03
9.60E-05
1.20E-04
1.21 E-03
.OE-04
1.46-05
2.OE-05
8.OE-05
1.7E-05 3.OE-06 2.IOE-04 3.OE-05 2.OE-05
26-Jun-93 5.206-05 .9E-05 3.OE-06 .70E-05 3.6E-05 2.OE-05
12-Oct-93 SlOE-OS 2.3E-05 3.OE-06 7.1OE-04 6.OE 05 2.06-05
11-May-94 1.20E-04 1.OE-05
1.6E-06
SE-OS
6.1E-06
1.56-06
3.OE 05
8.4E 08
.7E-07
1.5E 07
.4E
9.80E-04
7.80E-05
2.60E-04
1.208-04
4.508-05
1.6E 04
7.1E 06
.3E-O5
liE 05
4.3E 06
2.06-04
4.28-07
8.3E-07
7.56-05
7.2E-07
19-Jul 94
28-Nov-94
11-Apr-95
06-Jul-95
3.73E-05
2.40E-04
8.40E-05
.90E Os
15-Nov-95 1.20E 04 6.8E-06 1.4E-07 1.008-05 5.8E 06 7.16-07
23-Apr-96 8.30E-05 3.3E-06 .9E 07 6.80E-05 6.3E 06 1.86-07
31-Jul-96
14-Nov-96
21-Apr-97
05-Sep-97
20-Nov97
23-Mar-98
3.60E 05
3.30E 05
5.40E-06
8.90E-06
9.20E-05
2.5E-06
2.3E-06
3.SE-O7
7.2E-07
9.2E-05
1.6E 07
1.7E 07
.6E 07
5.4E 07
9.2E OS
8.50E-05
4.406-05
3.20E-05
3.40E-04
4.60E-04
5.6E 06
4.8E 06
9.OE-07
6.7E-06
4.6E-04
8.46-07
8.48-07
7.8E-07
1.16-07
4.66-04
16-Jun-98 6.SOE 08 6.58-08 6.SE-08 3.208-07 3.2E 07 3.2E-07
05-Nov-98 4.20E-05 1.OE-06 liE 07 1.706-04 1.OE 05 5.5E-07
15-Apr99 6.20E-05 .OE-06 .OE-07 .40E-04 7.OE-06 .OE-07
07-Jul 99 5.45E-05 .4E-06
3.OE-O6
1.0E-O6
.OE-06
1.46 06
1.OE-06
8.3E-08
2.2E-07
2.4E 07
3.3E-07
3.7E-07
1.56-07
9.20E-05
2.80E-05
2.70E-04
2.8OE-04
3.3OE 04
7.6E 07
4.OE-06
.OE-06
I.OE-0S
2.06-05
5.06-05
N/A
4.2E-07
1.1 E-06
l.2E-06
.7E-06
1.9E-06
7.6E-07
02-Dec-99
21-Apr-00
22-Jun 00
21 Dec00
30Apr01
1.106-04
3.70E-05
2.906-05
2.306-06
2.1OE-O5
14 Jun-01 1.30E-06 4.OE-08 1.26-07 1.806-06 3.06-08 5.9E-07
17Dec01 3.706-05 7.67E 07 6.306-08 6.72E 05 2.62E-06 6.OOE-07
7-May-02 4.90E-05 2.40E 06 7.608-07 1.28E 04 5.61E-06 1.OOE 05
7-Jul-02
5-Dec-02
21-Mar-03
10-Jun-03
20-Nov-03
8.88E-05
.5OE-O4
5.OOE-05
5.60605
3.206 04
4.32E-06
6.26 06
3.4606
2.OE-06
8.26-06
7.60E-07
7.608-07
2.718-06
4.1OE-07
1.706-07
8.33E-05
3.166-04
4.2e-6
1.886-04
4.896-04
4.32E-06
.07E-05
5.14606
1.256-OS
.OOE-05
1.06-OS
4.20606
8.26-08
8.36-07
8-Apr-04 6.296-05 4.1 E-06 2.006-07 1.946-05 4.006 06 1.06-06
12-Jun-04 6.516 05 3.46-06 1.306 07 1.876-05 3.906-06 6.56-07
30-Nov-04 7.506 05 4.6E-06 2.OE 08 4.45E-04 .40E-05 3.OE-07
21 Apr 05 4.906-05 2.70E-06 .30E-07 1.276-04 4.806-06 6.506-07
13-Jun 05
10Nov05
5-Apr-06
16-Jun-06
28-Nov06
2.306-OS
7.406-OS
.OOE-04
9.506-05
8.13E-05
2.106-06
3.506-06
6.006 06
S.90E-06
4.10606
1.S0E-07
1.206-10
5.006-08
5.OOE-08
2.206-07
4.706-OS
2.406 06
6.546-04
4.486-04
3.25604
5.IOE-06
8.106-08
.50E-05
1.406-05
1.126-06
7.606-07
S.80E-10
1.006-06
1.OOE-06
1.00605
30 Mar-07 4.306-OS 2.606 06 1.706-07 2.646 04 7.206-06 8.606 07
1-Jun-07 SI OE 95 3.206-06 2.30607 5.30E-04 1.40606 1.206-06
29-NOv-07 7.306-05 6.66-06 S.OE-08 7.006-04 2.206-05 1.106-06
22-Apr-08 2.86-06 2.86-06 7.206-07 4.405-04 2.06-05 1.06-06
18-Jun-08 3.2606 3.35-06 1.806-06 1.406-04 336-05 S.55-OS
12-Dec-08 7.36 05 3.25-06 7.406 07 4.405-04 2.SE-OS 3.26-OS
ENJGV
LABC/A TO//LS
ENERGYLASORA TORIES INC 2393 Sail Creek Hibway 82601 P0 Box 3258 Caspec WV82602
Toll Free 888.235 0515 307235.0515 Far 307234 1639 casperenergy/ab.com wwwenergy/ab.com
LABORATORY ANALYTICAL REPORT
Client
Project
Lab ID
Client Sample ID
Denison Mines USA Corp
Quarterly Radionuclide Testing
C08 101 134-004
5095 Filter and Beaker
Report Date 12/05/08
Collection Date 10/07/08
DateReceived 10/17/08
Matrix Air
MW
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium
Uranium Activity
1.29 mg/filter
873 pCi/Filter
0.0003
0.2
SW6020 11110/08 1941 /ts
SW6020 11/10/08 1941 /ts
RADIONUCLIDES TOTAL
Lead 210
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
-0.9
18
30
0.7
1.1
1.7
0.1
0.63
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pci/Filter
pCi/Filter
pCi/Filter
pCi/Filter
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
11/18108 1000 /dm
11/18/08 1000 /dm
11/18/08 1000 1dm
11/18/08 1210/trs
11/18/08 1210/trs
11/18/08 121O/trs
11/13/08 1937 /dmf
11/13108 1937 /dmf
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MDC Minimum detectable concentration
MCL Maximum contaminant level
ND Not detected at the reporting limit
0.20
Not detected at minimum detectable concentration
ENTRGY
1LO/A TOI/LS
ENERGYLASORA TORIES INC -2393 Sail Creek Hqhway 82601-AC Sex 3258 Caspe WV82802
Toil Free 888.23505/5-3072350515 Fai 30Z234.1539 [e-mail]-wwwenergy/ab.com
LABORATORY ANALYTICAL REPORT
Client
Project
Lab ID
Client Sample ID
Denison Mines USA Corp
Quarterly Radionuclide Testing
C08101 134-005
5096 Filter and Beaker
Report Date 12/05/08
Collection Date 10/07/08
DateReceived 10/17/08
Matrix Air
MCLI
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium
Uranium Activity
1.11 mg/filter
751 pCi/Fitter
0.0003
0.2
5W6020 11/10/082002 ts
SW6020 11/10/08 2002/ts
RADIONUCUDES TOTAL
Lead 210
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
1.7
18
30
-0.5
0.8
1.7
1.6
10
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Filter
pCi/Fiiter
pCi/Fitter
pCi/Filter
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
11/18/08 1000/dm
11/18/08 1000/dm
11/18/08 1000/dm
11/18/08 1452 /trs
11/18/08 1452 trs
11/18/08 1452/trs
11/13/08 1937 dmf
11/13/08 1937 /dmf
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MCL Maximum contaminant level
ND Not detected at the reporting limit
0.20
MDC Minimum detectable concentration Not detected at minimum detectable concentration
EIERGV
LAIR R/A TORIES
ENEROYLASORA TORIES INC 2393 Sail Creek/1i/iway 82601 P0 Box 3258 Casper WY82802
To//Free 885235 0515 307235.0575 Far 307234.1539 caspereneigy/ab.coin wwwenergy/ab.com
LABORATORY ANALYTICAL REPORT
MCLJ
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
RADIONUCLIDES TOTAL
SW6020 11/10/08 2006 Its
SW6020 11/10/08 2006/ts
Lead 210
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
17 pCi/Filter
18 pCi/Filter
30 pCi/Filter
-1 pCi/Filter
0.7 pCi/Filter
1.6 pCi/Filter
1.2 pCi/Filter
1.2 pCi/Filter
E909.OM
E909.OM
E909OM
E903.0
E903.0
E903.0
E907.0
E907.0
11/18/08 1000/dm
11/18/08 1000/dm
11118/08 1000 1dm
11/18/08 1452 trs
11/18/08 1452 trs
11/18/08 1452 trs
11/14/08 0849 dmf
11/14/08 0849 dm1
Report RL Analyte reporting limit
Definitions QCL Quality control limit
MDC Minimum detectable concentration
MCL Maximum contaminant level
Client Denison Mines USA Corp Report Date 12/05/08
Project
Lab ID
Quarterly Radionuclide Testing
COOl 01134006
Collection Date
DateReceived
10/08/08
10/17/08
Client Sample ID 5099 Filter and Beaker Matrix Air
Uranium 0.0012 mg/filter 0.0003
Uranium Activity 0.8 pCi/Filter 0.2
0.20
ND Not detected at the reporting limit
Not detected at minimum detectable concentration
ENERGYLASORA TORIES INC 23.93 Salt Creek Highway 82601 PG Box 3258 Casper WY82602
WIt Free 888.235.0515 307235 0515 FaK 307234.1639 casperCºenergylaAcom wwwenergy/ab.com
LABORATORY ANALYTICAL REPORT
Report Date
Collection Date
DateReceived
12/05/08
10/08/08
10/17/08
ENZRGY
ARCRA TO/CF
Client
Project
Lab ID
Client Sample ID
Analyses Result Units Qualifiers RI
MCL/
QCL Metitod Analysis Date By
TRACE METALS
Uranium
Uranium Activity
0.0012 mg/filter
0.8 pCi/Filter
0.0003
0.2
5W6020 11/10/08 2010 Its
SW6020 11/10/082010 Its
RADIONUCUDES TOTAL
Lead 210
Lead 210 precision
Lead 210 MDC
Radium 226
Radium 226 precision
Radium 226 MDC
Thorium 230
Thorium 230 precision
15 pCi/Filter
18 pCi/Filter
30 pCi/Filter
-0.4 pCi/Filter
0.9 pCi/Filter
1.7 pCi/Filter
0.21 pCi/Filter
1.1 pCi/Filter
E909.OM
E909.OM
E909.OM
E903.0
E903.0
E903.0
E907.0
E907.0
11/18/08 1000/dm
11/18/08 1000/dm
11/18/08 1000/dm
11/18/08 1452/trs
11/18/08 1452/trs
11/18/08 1452/trs
11/14/08 0849/dmf
11/14/080849/dm1
Report RL Analyte reporting limit
DefinItions QCL Quality control limit
MDC Minimum detectable concentration
MCL Maximum contaminant level
ND Not detected at the reporting limit
Denison Mines USA Corp
Quarterly Radionuclide Testing
C08101 134-007
5098 Filter and Beaker Matrix Air
0.20
Not detected at minimum detectable concentration
ENIRGY
LAIS/AIOR/ES
ENERS YLABORA TORIES INC 2393 Sail Creek Hihway 82601 P0 Box 3258W Casper WY82602
Toll Free 588.2350515 3072350515W Fax 30Z234.1539 casper4energyIab.com wwenergy/ab.com
LABORATORY ANALYTICAL REPORT
Denison Mines USA Corp Report Date 12105/08
Quarterly Radionuclide Testing Collection Date 10/08/08
C08101 134-008 DateReceived 10/17/08
Matrix Air
Client
Project
Lab ID
Client Sample ID 5100 Filter and Beaker
MCL
Analyses Result Units Qualifiers RL QCL Method Analysis Date By
TRACE METALS
Uranium 0.0018 mg/filter 0.0003 3W6020 11/10/08 2014 ts
uranium Activity 1.2 pCi/Filter 0.2 SW6020 11/10/08 2014 ts
RADIONUCLIDES TOTAL
Lead 210 2.2 pCi/Filter E909.OM 11/18/08 1000/dm
Lead 210 precision 18 pCi/Filter E909.OM 11/18108 1000 dm
Lead 210 MDC 30 pCi/Filter E909.OM 11/18/08 1000 dm
Radium 226 -0.2 pCi/Filter E903.0 11/18/08 1452 trs
Radium 226 precision pCi/Filter E903.0 11/18/08 1452 trs
Radium 226 MDC 1.8 pCi/Filter E903.0 11/18/08 1452 trs
Thorium 230 0.75 pCi/Filter 0.20 E907.0 11/14/08 0849 dmf
Thorium 230 precision 1.2 pCi/Filter E907.0 11/14/080849 dmf
Report RL Analyte reporting limit MCL Maximum contaminant level
Definitions QCL-Quality control limit ND Not detected at the reporting limit
MDC Minimum detectable concentration LI Not detected at minimum detectable concentration
ENERGY LABORATORIES INC 2393 Salt Creek Hwy 82601 P0 Box 3258 Casper WY 82602
Toll Free 888.235.0515 307.235.0515 FAX [phone] [e-mail] www.energylab.comLABORATORIES
LABORATORY ANALYTICAL REPORT
Client Denison Mines USA Corp Report Date 08/19/08
Project 3rd Quarter Surface Water Collection Date 08/07/08 0840
Lab ID C08080388-001 DateReceived 08/08/08
Client Sample ID Cottonwood Creek Matrix Aqueous
MCLI
Analyses Result Units Qualifier RL QCL Method Analysis Date By
PHYSICAL PROPERTIES
Solids Total Dissolved TDS @180 188 mg/L 10 A2540 08/11/08 1551 /jh
Solids Total Suspended TSS 105 24300 mg/L A2540 08/11/08 1231 /jh
Report RL Analyte reporting limit MCL Maximum contaminant level
Definitions QCL Quality control limit ND Not detected at the reporting limit
ENERGY LABORATORIES INC 2393 Salt Creek Hwy 82601 P0 Box 3258 Casper WY 82602
Toll Free 888 235.0515 307.235.0515 FAX [phone] [e-mail] www.energylab.comLARORATORIES
Report RL Analyte reporting limit
Definitions QCL Quality control limit
LABORATORY ANALYTICAL REPORT
Client
Site Name
Denison Mines USA Corp
Annual Soil Samples Report Date 10/13/08
Lab ID C08081011-001
Client Sample ID BHV
Matrix Soil
Collection Date 08/20/08 0812
DateReceived 08/22/08
Analyses Result Units Qualifiers RL
MCL/
QCL Method Analysis Date By
METALS TOTAL
Uranium 1.82 mg/kg-dry 0.03 SW6020 08/29/08 2205 sml
RADIONUCLIDES TOTAL
Radium 226 0.9 pCi/g-dry E903.0 09/23/08 1502 evm
Radium 226 precision 0.1 pClfg-dry E903.0 09/23/08 1502 evm
Radium 226 MDC 0.09 pCi/g-dry E903.0 09/23/08 1502 evm
Lab ID C0808101 1-002 Collection Date 08/20/08 0942
Client Sample ID BHV DateReceived 08/22/08
Matrix Soil
Analyses Result Units Qualifiers RL
MCL/
QCL Method Analysis Date/By
METALS TOTAL
Uranium 0.63 mg/kg-dry 0.03 SW6020 08/29/08 2225 sml
RADIONUCLIDES TOTAL
Radium 226 0.3 pCi/g-dry E903.0 09/23/08 1502 evm
Radium 226 precision 0.08 pCi/g-dry E903.0 09/23/08 1502 evm
Radium 226 MDC 0.08 pCi/g-dry E903.0 09/23/08 1502 evm
Lab ID C0808101 1-003 Collection Date 08/20/08 0841
Client Sample ID BHV DateReceived 08/22/08
Matrix Soil
Analyses Result Units Qualifiers RL
MCLI
QCL Method Analysis Date By
METALS TOTAL
Uranium 1.17 mg/kg-dry 0.03 SW6020 08/29/08 2229 sml
RADIONUCLIDES TOTAL
Radium 226 0.5 pCi/g-dry E903.0 09/23/08 1502 evm
Radium 226 precision 0.1 pCi/g-dry E903.0 09/23/08 1502 evm
Radium 226 MDC 0.09 pCi/g-dry E903.0 09/23/08 1502 evm
MCL Maximum contaminant level
MDC Minimum detectable concentration
ND Not detected at the reporting limit
ENERGY LABORATORIES INC 2393 Salt Creek Hwy 82601 P0 Box 3258 Casper WY 82602
Toll Free 888 235.0515 307.235.0515 FAX [phone] [e-mail] www.energylab.comLABORATORIES
LABORATORY ANALYTICAL REPORT
Client Denison Mines USA Corp
Site Name Annual Soil Samples Report Date 10/13/08
Lab ID C0808lOl 1-004
Client Sample ID BHV
Matrix Soil
Collection Date 08/20/08 0830
DateReceived 08/22/08
Analyses Result Units Qualifiers RL
MCL/
QCL Method Analysis Date By
METALS TOTAL
Uranium 1.96 mg/kg-dry 0.03 SW6020 08/29/08 2233 sml
RADIONIJCLIDES TOTAL
Radium 226 0.8 pCi/g-dry E903.0 09/23/08 1502 evm
Radium 226 precision 0.1 pci/g-dry Ennan 09/23/08 1502 evm
Radium 226 MDC 0.09 pCLfg-dry E903.0 09/23/08 1502 evm
Lab ID C0808101 1-005 Collection Date 08/20/08 0823
Client Sample ID BHV DateReceived 08/22/08
Matrix Soil
Analyses Result Units Qualifiers RL
MCL/
QCL Method Analysis Date By
METALS TOTAL
Uranium 0.99 mg/kg-dry 0.03 SW6020 08/29/08 2237 sml
RADIONUCLIDES TOTAL
Radium 226 0.5 pCi/g-dry E903.0 09/23/08 1502 evm
Radium 226 precision 0.1 pCi/g-dry E903.0 09/23/08 1502 evm
Radium 226 MDC 0.09 pCi/g-dry E903.0 09/23/08 1502 evm
Lab ID C0808101 1-006 Collection Date 08/20/08 0921
Client Sample ID BHV Black Mesa DateReceived 08/22/08
Matrix Soil
Analyses Result Units Qualifiers RL
MCL/
QCL Method Analysis Date By
METALS TOTAL
Uranium 1.45 mg/kg-dry 0.03 SW6020 08/29/08 2241 smi
RADIONUCLIDES TOTAL
Radium 226 0.6 pCi/g-dry E903.0 09/23/08 1502 evm
Radium 226 precision 0.1 pCi/g-dry E903.0 09/23/08 1502 evm
Radium 226 MDC 09 pCi/g-dry E903 09/23/08 1502 evm
Report RL Analyte reporting limit MCL Maximum contaminant level
Definitions QCL Quality control limit ND Not detected at the reporting limit
MDC Minimum detectable concentration
ENERGY LABORATORIES INC 2393 Salt Creek Hwy 82601 P0 Box 3258 Casper WY 82602
Toll Free 888.235.0515 307.235.0515 FAX [phone] [e-mail] www.energylab.comLABORATORIES
LABORATORY ANALYTICAL REPORT
Client Denison Mines USA Corp
Site Name Annual Soil Samples Report Date 10/13/08
Lab ID C0808101 1-007 Collection Date 08/20/08 0855
Client Sample ID West Water Creek DateReceived 08/22/08
Matrix Soil
Analyses Result Units
MCL/
Qualitiers RL QCL Method Analysis Date By
METALS TOTAL
Uranium 0.21 mg/kg-dry 0.03 SW6020 08/29/08 2245 smi
RADIONUCLIDES TOTAL
Radium 226 0.1 pCi/g-dry E903.0 09/23/08 1502 evm
Radium 226 precision 0.07 pCi/g-dry E903.0 09/23/08 1502 evm
Radium 226 MDC 0.09 pCi/g-dry E903.0 09/23/08 1502 evm
Report RL Analyte reporting limit MCL Maximum contaminant level
Detinitions QCL Quality control limit ND Not detected at the reporting limit
MDC Minimum detectable concentration