2009-03-02_PERMIT FILE - C1980004A ‎(9)‎

• Permit No: C1980004A
• IBM Index Class Name: Permit File
• Doc Date: 3/2/2009
• Section_Exhibit Name: Appendix N Probable Hydrologic Consequences
• Media Type: D
• Archive: Yes

As shown in Table N-9, the concentration of the mine water discharge and
sediment pond and gob pile leachate is less then the averages of SW-1 and SW-8 in
nearly every case. The exception is Copper, in which the mine/leachate average
exceeds the SW-8 average by 0.013 mg/L. The mine water and leachate enter East
Salt Creek at McClane Creek, below SW-1 and above the SW-8 monitoring points. As
shown in Table N-9, each metal concentration decreases from SW-1 to SW-8. It can
be postulated that the addition of the mine water and leachate reduce the metal
concentration in the waters of East Salt Creek. Therefore, by lowering the metal
concentration in the surface waters, the addition of the mine water and leachate will not
harm wildlife utilizing the waters of East Salt Creek.
Summary of SW-1 and SW-8 laboratory data for quarters 2 & 3 follow:
•
C
SW-1 -
...,~~.-.__.-....._..--..._

________.._---. EAST SALT CREEK ABOVE McCLANE -Second Quarter
......-......_,..,._-.n..__,...,.._,..__..d._.....1_.._._......w._.__....-.....r...-...-~_..___,..... ~._.. ..~__.. __ __._-_I ... ~.. .-.._a._...
...,. I __ I___ _ f _ _~ ~........_-._._... i .,
ISW1-2Q/08iSW1-2Q/07iSW1~2Q/06iSW1~2Q/05}SW1~2Q/04~SW1-2Q/03; AVG
Arsenic TR 0.004 0.163 0.272 0.034 DRY 0.000 0.095
Copper PD 0.053 0.01 0.01 0.03 0.011 0.022
Manganese PD 0.037 0.050 0.030 0.051 0.110 0.056
Lead PD 0.050 0.030 0.030 0.050 0.000 0.032
Selenium PD 0.023 0.718 0.090 0.135 0.002 0.194
SW-1 -EAST SALT CREEK ABOVE McCLA
NE -T hird Quarter
_ ~ ~ ~
3 _ ~ - -~-
__ ____
i ._.__
SW1~3/08~
SW1~3Q/07~ _..~...________.
SW1~3Q/06j ~ ,
SW1~3Q/05i ~,_~.._
SW1~3Q/04*
-SW1~3Q/03; ~...___
AVG
Arsenic TR Not Available 0.005 0.108 0.203 0.032 ~ DRY 0.087
Copper PD 0.02 0.004 0.017 0.660 0.175
Manganese PD 0.077 0.069 0.010 6.8 1.742
Lead PD 0.060 0.050 0.050 0.300 0.115
Selenium PD 0.035 1.591 0.151 0.106 0.471
SW-8 -EAST SALT CREEK BELOW McCLANE -Second Quarter
SW8~2Q/08
I SW8~2Q/07~ SW8~2Q/06~SW8~2Q/05
i
_._ _..___- _ -,
SW8~2Q/04
__--.._- ___- .~-- AVG ..`.
SW8~2Q/03i
Arsenic TR 0.004 0.167 0.204 0.038 DRY 0.000 0.083
Copper PD 0.053 0.004 0.020 0.010 0.012 0.020
Manganese PD 0.011 0.050 0.020 0.032 0.008 0.024
Lead PD 0.05 0.09 0.07 0.050 0.001 0.052
Selenium PD 0.021 0.264 0.094 0.177 0.003 0.112
SW-8 -EAST SALT CREEK BELOW McCLANE -Third Quar ter
_
____
___~_._ ~___.________ .~ ( ____ _
_ _
.1
~
_ _.
.
_
iSW8~3Q/08~
SW8~3Q/07~
SW8~3Q/06j
SW8~3Q/05~ __
_
SW8~3Q/04*~ _
_
_..--
SW8~3Q/03; _
_____
_._
AVG
Arsenic TR Not Available 0.004 0.077 0.226 0.043 0.000 0.070
Copper PD 0.010 0.009 0.010 0.27 0.012 0.062
Manganese PD 0.022 0.024 0.010 3.39 0.008 0.691
Lead PD 0.02 0.02 0.050 0.300 0.001 0.078
Selenium PD 0.024 1.552 0.129 0.093 0.003 0.360
Appendix N - TR-16 - 13 - 10/08