Page 192 - Water and wastewater engineering

WELLS 4-47

Proposed 125 m
new well
N

125 m
4
54 145 m

2
5

137.5 m 54

125 m
3

Plant
Bode Well
125 m
1 Well Field No. 3
63 Approved:
FIGURE P-4-21

The aquifer characteristics are as follows:
5
Storage coefficient 2.80 10

3
2
Transmissivity 1.79 10 m /s
Nonpumping water level 7.60 m below grade
Depth to top of artesian aquifer 156.50 m
4-22. What pumping rate, pumping time, or combination thereof can be sustained by the
new well in Problem 4-21 if all of the well diameters are enlarged to 1.80 m?
The design elements required in the following problems are:
a. Demand estimate
b. Well details
(1) Number
(2) Distance between wells
(3) Diameter
(5) Depth and anticipated 100-day drawdown
(6) Screen dimensions
(5) Slot size