REP41178

• Permit No: C1981014
• IBM Index Class Name: REPORT
• Doc Date: 4/27/2007
• Doc Name: 2006 Annual Hydrology Report
• From: Energy Fuels Coal, Inc.
• To: DRMS
• Annual Report Year: 2006
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

EFCI Southfield Mine -Year 2006 Annual Hydrology Report April 25, 2007
;TABLE 7 ; ( j
MW-23 WATER QUALITY DATA
~ i I
I
_ SAMPLE DATES: .2006 i 1979-2006
(PARAMETER ~
;pH lab _UNITS _ (
units ( 6/20/2006. 11/20/2006 AVERAGE j
8.700 8 600 r 8.650 _MIN.'
6.200 AVE.
8.176 MAX.
8.800
:Conductivity at 25C umhos/cm 1260.000 ! 1430.000 { 1345.000 1 210.000 971.857 2820.000
;Temperature (field)__

.Solids, total dissolved deg.C
-- ~ --
mg/I 15.900 15.000 15.450 j
~-~ - ----i- ~---~---'-----~-
810.000 ~ 990.000 ~ 900.000 T 10.000

156.000 14.746
L---
627.032 24.500
-
1870.000
(Bicarbonate as CaCO3 m I 476.000 j 478.000 ) 477.000 ' 150.000 338.792 1100.000
Calcium, dissolved _
(Chloride mg/I_
m /I 3.200 _~_ ___7.300 _ ~ _ 5.250__
16.000 i 18.000 ~ 17.000 c _2.200
3.200 7_512__i
15.733 39.400
24.000
IMa nesium, dissolved mg/I 0.400 ~ 1.000 ~ 0.700 ~ 0.000 0.846 7.000
!_Nitrogen, ammonia mg/I 0.000 ~
0.100
i 0.050 0.000 0.284 5.500
:Nitrogen, nitrate nitrite _
m /I __
_ __
0.340 1 0.250 0.295 _
0.040 0.381 0.640
Phosphorus, ortho m /I 0.040 0.070 0.055 0.000 0.058 0.226
Phosphorus, total __ mg/I _1 _ __~ _ 0.000 _ 0.055 __0.073
Sodium, dissolved m /I 290.000 285.000 ( 287.500 28.500 239.247 652.000
-!Sulfate mg/I 160.000 ~ 210.000 185.000 9.750 172.403 348.000
(Arsenic, dissolved mg/I _ _0.002 _ __ 0_002 _ _ 0.002 _ 0.000 0.001 0.005
(Cadmium,dissolved m /I 0.000 0.000 0.000 0.000 0.000 _
0.008
'ilron, dissolved mg/I 0.050 1.830 0.940 0.000 0.842 24.200
(Manganese, dissolv_e__d mg/I 0.000 _(__0.048__ ~_ 0.024 0.000 0.032 0.697
Mercury, dissolved m /I 0.000 0.000 ~ 0.000 0.000 0.000 0.001
'Selenium, dissolved m /I 0.000 0.000 0.006 0.000 0.002 0.053
'Zinc, dissolved mg/I 0.020 0.150 0.085 0.000 0.025 0.241

I NOTES:
': 1. Zero data values =parameter was analyzed
f
or but not detected.
_
_
2. Blank data Feld = no data. ~-
6 41 712 0 0 6 annual hyd rptdoc NWCC INC. Page 19