PERMFILE120715

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: NH1 TAB 17 PROBABLE HYDROLOGIC CONSEQUENCES
• Media Type: D
• Archive: Yes

_ TAB 17
PROBABLE HYDROLOGIC CONSEQUENCES
List of Figures (Cont.)
Figure No. Page
17-12 Drawdowns in the Coal Aquifer, Year 4 17-24
17-13 Drawdowns in the Coal Aquifer, Year 5 17-25
17-14 Relationship Between Acid Base Potential and Paste pH,
Nucla East 17-41
17-15 A Plot of Cadmium Concentrations Versus pH Based on the
Ceochemical Model PHREEOE 17-48
17-16 Hydrograph of Well GW-N9, Civing Total Dissolved
Solids Concentration 1~7-56
List of Tables
• Table No.
17-1
N
cla E
t Pit I
flo
l
ti
f
O
A
if
C
l
th
b
d Page
17-2
w
ons
or
ver
en
qu
er
u
as
n
a
a
e
ur
cu
17-2 Nucla East Pit Inflow Calculations for the Dakota Coal Aquifer 17-3
17-3 Summary of Ground Water Aquifer Characteristics 17-5
17-4 Simulated Average Daily Pit Inflow (ft3d) for the Coal and
Overburden Aquifers for Each Year of Mining 17-26
17-SA Effects of Nucla East Pit Pumpage Discharge on Calamity Draw
Water puality 17-31
17-SB Effects of Nucla East Pit Pumpage Discharge on San Miguel
Water puality 17-32
17-6 Overburden (Unit 1) Characteristics - Nucla East Area 17-34
17-7 Interburden (Units 2, 3, 4) Characteristics - Nucla East Area 17-36
17-8 Underburden (Unit 6) Characteristics - Nucla East Area 17-38
17-9 Classification of pH of Water Samples from Nucla East Area,
on the Basis of Stratigraphy 17-43
17-10 Water Chemistry and Saturation Indices from Chemical Modeling 17-45
17-11 Predicted pH's Resulting from Mixing of Water from GW-N20
• and GW-N21, with Different Mineralogy Reactions 17-51
17-12 Ranges of Total Dissolved Solids for Two Sites on Calamity Draw 17-53
iii Revised 04/11/88