Table 2.12 Well characteristics and trench characteristics of the site (Colombano and Hiez 2009)
Well characteristics
Trench characteristics
Recovery duration
. recovery 5
years
Time of recovery
. recovery 5 years
Capture radius
. c
60 ft
Groundwater flow rate
. w
68.47
gpm
Well radius
. well
0.25 ft Hydraulic gradient
. W
0.04
Flow rate in well
. w
88
gpm
Length of the trench
. t
590
Screen interval of the
aquifer
. well
1.6 ft
Length of polluted
LNAPL
. T
75 ft
Radius of influence
. influence 200 ft Height of the trench
(useful)
. T
6.56 ft
Number of wells
5
Fig. 2.27 Saturation profiles and relative permeability (Colombano and Hiez 2009)
0.7
0.8
0.6
0.5
0.5
0.4
0.3
0.2
0.1
0
0
1
1.5
2.5
3.5
4.5
5
4
3
2
Years
Pump/skimming
Trench
LNAPL thickness (m)
Fig. 2.28 LNAPL thickness in monitoring well versus time (Colombano and Hiez 2009)
106
S. Colombano et al.