2016-12-01_PERMIT FILE - C1980007 ‎(6)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 12/1/2016
• Doc Name: Hydrologic Characterization of the South of the Divide
• Section_Exhibit Name: Exhibit 71
• Media Type: D
• Archive: No

2016 Recommended Modifications to the West Elk Mine Hydrologic Monitoring Network
hfigure 31. Water Quality In Lower Kaven liulch
Lower Raven Gulch
9.0
^, 8.5
c
v
8.0
y
= 7.5
a
v
d 7.0
LL
65
6.0
i y Qin < i < i a' i < < i i < < <
Date
—Baseline Max —Baseline Min tpH
Lower Raven Gulch
0.25 —• —
0.2
J
E 0.15
C
0
m 0.1
N
N
p 0.05
0
--Baseline Max --m—Diss. Iron Date
40
�i
Lower Raven Gulch
14
12
10
8
c
O 6
m
F 4
2 {
o
—Baseline Max Tot. Iron Date
Note: Baseline 2005 (CDRMS. 2005): baseline laboratory values recorded in May and ,lune 2005 only, and baseline field values
for pH recorded in May, June and September 2005 only (HydroGeo. 2016b).
Not Detected (ND) values graphed as zero.
August 2016 HpdroGeo, Inc.
Lower Raven Gulch
350
E
300
N
250
7
200
V
C
U
50
A
100
!v
W
50
0
—Baseline
Max
tEC Date
Lower Raven Gulch
9.0
^, 8.5
c
v
8.0
y
= 7.5
a
v
d 7.0
LL
65
6.0
i y Qin < i < i a' i < < i i < < <
Date
—Baseline Max —Baseline Min tpH
Lower Raven Gulch
0.25 —• —
0.2
J
E 0.15
C
0
m 0.1
N
N
p 0.05
0
--Baseline Max --m—Diss. Iron Date
40
�i
Lower Raven Gulch
14
12
10
8
c
O 6
m
F 4
2 {
o
—Baseline Max Tot. Iron Date
Note: Baseline 2005 (CDRMS. 2005): baseline laboratory values recorded in May and ,lune 2005 only, and baseline field values
for pH recorded in May, June and September 2005 only (HydroGeo. 2016b).
Not Detected (ND) values graphed as zero.
August 2016 HpdroGeo, Inc.