SECTION THREE
Construction Activities
The six SVE wells were piped to two parallel treatment trains, each consisting of a moisture
separator, a blower, and two vapor-phase GAC canisters. These two parallel sets of equipment
were operated to ensure that the system's performance would not be affected by a breakdown.
Well construction details for the full-scale system are provided below. Schematics of the SVE
and AS systems, respectively, are shown in Figures 2 and 3.
Location of
Screen
Screen Slot
Type of Well
No. of Wells
Depth of Well
Well Screen
Length (ft)
Openings (in)
20 ft. below static
water level (SWL);
15 to 20 ft.
AS
0.01
5
5
50 ft below ground
below SWL
surface (BGS)
2 ft above
seasonal high
SVE
0.01
water level
6
30 ft BGS
10
(SHWL) to 12 ft
above SHWL
2 ft. above
VZP
SHWL to 12 ft.
0.01
10
30 ft. BGS
10
above SHWL
1 ft. above
0.01
3
40 ft. BGS
SHWL to 7-8 ft.
10
monitoring
below SHWL
1 ft. above
DOS
SHWL to 7-8 ft.
0.01
3
40 ft. BGS
10
below SHWL
2 ft. above
Passive
SHWL to 12 ft.
0.01
4
30 ft. BGS
10
injection
above SHWL
3-2
Ft. Griffey Landfill 5 OU Interim RA Report
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