2009-05-19_REVISION - M1977285 ‎(37)‎

• Permit No: M1977285
• IBM Index Class Name: REVISION
• Doc Date: 5/19/2009
• Doc Name: EPP amendment ‎(AM-03)‎ submittal ‎(part 1)‎
• From: Denison Mines
• To: DRMS
• Type & Sequence: AM3
• Email Name: RCO
• Media Type: D
• Archive: No

P.O. 1 of 1
E
•
0
Notes:
Well WS-1 had insufficient volume of water to collect samples for laboratory analysis during both February and March sampling events
NM - indicates sample was not analyzed for the indicated parameter
< - indicates that analyte was not detected above the reporting limit indicated
Aluminum u /L D 159 NS <100 D <100 1410 <100
Antimony u /L D <50 NS <50 D <50 <50 <50
Arsenic u /L D 1040 NS <1 D 615 3870 29
Barium u /L D <100 NS <100 D <100 <100 120
Beryllium u /L D <10 NS <10 D <10 <10 <10
Boron u /L D 675 NS 612 D 445 401 324
Cadmium u /L D <10 NS <10 D <10 <10 <10
Chromium u /L D <50 NS <50 D <50 <50 <50
Cobalt u /L D <10 NS <10 D <10 <10 76
Copper u /L D <10 NS <10 D <10 <10 47
Iron u /L D 55 NS 207 D <70 563 155
Lead u /L D <50 NS <50 D <50 <50 <50
Lithium u /L D 141 NS 792 D 127 143 847
Manganese u /L D <10 NS 23 D 14 <10 294
Mercury u /L D <1 NS <1 D <1 <1 <1
Molybdenum u /L D 1090 NS <100 D 627 4870 271
Nickel u /L D <50 NS <50 D <50 <50 <50
Selenium u /L D 68 NS 2 D 37 1900 51
Silver u /L D <10 NS <10 D <10 <10 <10
Thallium u /L D <100 NS <100 D <100 <100 <100
Uranium u /L D 9150 NS 1.4 D 7070 1650 17.9
Vanadium u /L D 1280 NS <100 D 956 468 <100
Zinc u /L D <10 NS <10 D <10 <10 78
Gross Alpha Ci/L D 13100 NS 15.7 D 7140 2130 17.5
Gross Beta Ci/L D 2930 NS 32.8 D 1690 497 20
Bicarbonate as HCO3 m /L D NM NS NM D 630 444 412
Calcium m /L D <6 NS 27 D 2 <1 28
Carbonate as CO3 m /L D NM NS NM D 39 63 <1
Chloride m /L D 42 NS 516 D 42 53 491
Fluoride m /L D NA NS NA D 3.5 4.4 1.7
Magnesium m /L D <1 NS 11 D <1 <1 11
Nitrogen, Nitrate+Nitrite as N m /L D 0.2 NS <0.1 D 0.3 9.3 <0.1
Nitrogen, Nitrite as N m /L D 0.1 NS <0.1 D <0.1 7.2 <0.1
Potassium m /L D NM NS NM D 5 8 21
Silicon m /L D NM NS NM D 5.2 5.9 4.1
Sodium m /L D NM NS NM D 460 564 2240
Sulfate m /L D 418 NS 4170 D 412 697 4260
Hardness as CaCO3 mg/L Dry 2 NS 113 Dry 5 2 113
TDS m /L D 1350 NS 7330 ED &I 1710 6990
Temperature C 15 15.51 15.34 15
H S.U. 8.14 9.04 9.28 8.29
Conductivity ms/cm 3.272 2.108 2.658 9.719
Dissolved O en g 26.9 18.86 18.3 14.3
Dissolved O

en
yg

m /L
g-

2.67

1.86

1.81

1.39
ORP 161.8 82 133 -51.5
Table 8-2
Comparison of West Sunday Mine Well Data - February and March, 2009
CADocu-ft and SettingsWntledn%My D-nnonts%CDM D.cumeM.W.ni- DRAFT Tebl-kTebk 8-2.a1ea