Environmental Engineering Reference
In-Depth Information
Outer locking cap
Protective seal
Weep hole
Inner cap
Bumper guard
Surface seal
Maximum frost line
Annular seal
neat cement/bentonite
or bentonite
Well casing
Filter pack seal
(bentonite)
Optional secondary filter pack
(very fine sand)
Well screen
Primary filter pack
Bottom cap
FIGURE 4.22
Monitoring well construction diagram. (From Ohio Environmental Protection Agency,
Technical Guidance
Manual for Hydrogeologic Investigations and Ground Water Monitoring
, Division of Drinking and Ground Waters,
Columbus, OH, 1995.)
Slotted
screen
Scale in
inches
FIGURE 4.23
PVC well screen. (Photo by Daniel T. Rogers.)
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