Post on 21-Jan-2016
Well 30 Modeling
Model Grid and Setup
Well 30
Well 31
Well 27
Well UC-H2
Boundaries
Constant Head
GeneralHead
Model Parameters
• 1 layer• Unconfined• Only pumping Wells
– Well 30– Well 31– Well 27
• Boundaries– Constant Head
• Top and Left Side of Model
– General Head• Bottom and Right Side
of Model
Layer Properties
• Conductivity
• Kx = 0.012 cm/sec
• Ky = 0.012 cm/sec
• Kz = 0.0012 cm/sec
• Vx = 130 ft/yr
• Gradient of 0.003
• Storage
• Ss = 0.0002 (1/ft)
• Sy = 0.2
• Effective Porosity = 30%• Total Porosity = 35 %
Initial Conditions
• Water Levels– 1974 Groundwater
contours from Kaiser Steel Corp Report, 1986.
• TDS Concentrations– 2000 model results
from Kaiser Steel Corp Report, 1986.
Well 30: TDS value 254 mg/l (no pumping from year 2000 – 2003)
Well 30: TDS 480 mg/l (with pumping from 2000 – 2003; 2500 gpm)
Well 30 TDS Impact vs. Pumping
Well 30 - TDS Over Timeat various pumping scenarios
0
100
200
300
400
500
600
700
800
0 365 730 1095 1460 1825 2190 2555 2920 3285 3650
Days
TD
S C
on
cen
tra
tio
ns
(m
g/L
)
2500 GPM
2000 GPM
1500 GPM
1000 GPM
No Pumping
Pumping rate 2500 gpm
Well 30 - 2500 GPM
0
100
200
300
400
500
600
700
800
0 365 730 1095 1460 1825 2190 2555 2920 3285 3650
Days
TD
S C
on
cen
tra
tio
ns
(m
g/L
)
2500 GPM
Well 30 (Pumping Rate 0 gpm, 3650 days)
Well 30 Turned Off
0
100
200
300
400
500
600
700
800
0 365 730 1095 1460 1825 2190 2555 2920 3285 3650
Days
TD
S C
on
cen
tra
tio
n (
mg
/L)
No Pumping
Well 30 (Pumping Rate 0 gpm, 3650 days)
Well 30 (Pumping Rate 1000 gpm, 3650 days)
Well 30 (Pumping Rate 1500 gpm, 3650 days)
Well 30 (Pumping Rate 2000 gpm, 3650 days)
Well 30 (Pumping Rate 2500 gpm, 3650 days)
Union Carbide – Particle Tracking 5 years
Union Carbide – Particle Tracking 10 years
Union Carbide – Particle Tracking 15 years