2020-10-22_PERMIT FILE - C1981012A ‎(4)‎

• Permit No: C1981012A
• IBM Index Class Name: Permit File
• Doc Date: 10/22/2020
• Section_Exhibit Name: Section 2.05 Operation and Reclamation Plan
• Media Type: D
• Archive: Yes

Table 26B - Projections of the Flooded Workings
Water Quality following Recycling of
Thickener Water for Key Constituents
Selenium 0.001 0.007 0.005 0.006 0.007
Sulfate (mg/1) 17 130 88.5 114 130
`Maximum values developed from a comparison of the 4/94 addition to Exhibit 8 and from the sample acquired 5/4/94.
'-Thickener values acquired from 12/30/94 sample. Water quality in flooded workings will look lake thickener in year 4.
'Binary mixing assuming 36.6% from mine inflow and 63.3% from the thickener (2.43 x 101 gal. thickener/6.63 x 101 gal. in muse)
at Year 1.
`Binary mixing assuming 14% from mune inflow and 86% (7.29 x 101 gal. thickener/8.98 x 10' gal. tnine water volume) from the
thickener at Year 3.
'Binary Mixing assuming flooding to the elevation of the East Portal and subsequent discharge reflecting thickener water quality.
RN -6 2.05-101
(Repaginated 10/21/16)
Flooded
Worldngs
MDNE (Max)'
Thickener
Year 13
Year 34
At Discharge 5
pH (S.ID
8.4
8.2
8.3
8.2
8.2
TDS (mg/1)
1412
510
839
636
510
EC (umhos/cm)
1729
900
1203
1016
900
Chloride
8
72
49
63
72
Iron
0.89
<0.05
0.36
0.17
< 0.05
(total recoverable)(mg/1)
Iron (dissolved) (mg/1)
< 0.02
0.03
< 0.03
0.03
0.03
Manganese
0.04
<0.01
< 0.02
< 0.01
<0.01
(total recoverable)
(mg/1)
Manganese (dissolved)
0.01
<0.01
<0.01
< 0.01
< 0.01
(mg/1)
Molybdenum (mg/1)
0.02
NA
0.11
0.12
NA
Nickel (mg/1)
< 0.02
0.01
<0.01
0.01
0.01
Nitrate as N
0.02
0.38
0.25
0.33
0.38
SAR
40.49
11.15
21.88
15.25
11.15
Selenium 0.001 0.007 0.005 0.006 0.007
Sulfate (mg/1) 17 130 88.5 114 130
`Maximum values developed from a comparison of the 4/94 addition to Exhibit 8 and from the sample acquired 5/4/94.
'-Thickener values acquired from 12/30/94 sample. Water quality in flooded workings will look lake thickener in year 4.
'Binary mixing assuming 36.6% from mine inflow and 63.3% from the thickener (2.43 x 101 gal. thickener/6.63 x 101 gal. in muse)
at Year 1.
`Binary mixing assuming 14% from mune inflow and 86% (7.29 x 101 gal. thickener/8.98 x 10' gal. tnine water volume) from the
thickener at Year 3.
'Binary Mixing assuming flooding to the elevation of the East Portal and subsequent discharge reflecting thickener water quality.
RN -6 2.05-101
(Repaginated 10/21/16)