Environmental Engineering Reference
In-Depth Information
Ty pe
Time scales
Recharge
Data
collection
frequency
Drainage or
Base low
Multi-
annual
Method
Focused
Diffuse
Event/daily
Weekly
Seasonal
Annual
Decadal
Millennial
Steady
Tracer methods
UZ chloride
x
D
x
x
x
x
1
UZ tritium
x
D
x
x
1
UZ
x
D
x
x
1
chlorine-36
UZ applied
x
x
D
x
x
x
x
x
m
UZ heat
x
D
x
x
x
m
GW chloride
x
x
R
x
x
x
1
GW
x
x
R
x
x
x
1
carbon-14
GW tritium
x
x
R
x
x
1
GW
x
x
R
x
x
1
chlorine-36
GW CFC
x
R
x
x
1
GW SF 6
x
R
x
x
1
GW tritium/
x
R
x
x
1
helium-3
GW applied
x
x
R
x
x
x
x
m
SW/GW
x
R
x
x
x
m
heat
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