# 	**Example 10.6.5: Contaminant transport**

#Given
Ko = 3e-3 cm/s
dh_dl = 0.002
ne = 0.23
Dstar = 1e-9 m^2/s

#Part A
vx = Ko*dh_dl/ne   #Fetter 2.6e-7 m/s

#Part B
Lo = 15 m
ao = 0.83 m
aL = ao*(ln(Number(Lo,m)))^2.414    #Fetter inccorectly gives 1.23 m
DL = aL * vx + Dstar   #Fetter incorrectly gives 3.2e-7 m^2/s

#Part C
t = 1 year

#Part D -- Fetter incorrectly gives 46 mg/l
Co = 725 mg/l
Conc = (Co/2)*( erfc( (Lo-vx*t)/(2*sqrt(DL*t)) ) + exp(vx*Lo/DL) * erfc( (Lo+vx*t)/(2*sqrt(DL*t)) ))


# 	**Example 10.6.6: Retardation**

#Given
rb = 1.75 g/cm^3
Kd = 10 ml/g
n = 0.20
vc_vx = 1/(1+(rb/n)*Kd)   #Fetter 0.011


# 	**Example 10.10: Capture Zones**

#Given
Qw=190000 ft^3/day
Ko = 1500 ft/day
i = 0.003
b = 75 ft

#Part A
ymax = Qw/(2*b*Ko*i); ft   #Fetter 281 ft

#Part B
xo = -Qw/(2*3.14*Ko*b*i); ft  #Fetter -89.6

#Part C
y = 250 ft
x = -y/tan(2*3.14*Ko*b*i*y/Qw); ft  #Fetter 682




# Homework Problems:

TBD