ADS Environmental Services FlowShark QR 775003 A2 - Manual (Page 109)

4-6 ADS FlowShark IS Manual
Forming a thin taper using vinyl tape
4. Excavate a trench at least 12 inches (31 cm) deep and 4 inches
(10 cm) wide from the designated EMU location to the monitor
location. Consult local regulations to verify the required trench
depth for the area.
5. Drill a ½-inch (13 mm) (minimum) hole through the corbel
(i.e., the structural foundation holding the manhole cover) or
manhole wall to provide a smooth transition for the cable into
the trench.
6. Run the communication cable from the monitor location in the
manhole to the EMU location. If required by local code, run
the cable through ¾-inch (19-mm) (minimum) electrical PVC
conduit in the following way:

Extend the conduit through the manhole corbel or wall at
the monitor location.
 Lay the conduit in the trench per local regulations and feed
the communication cable through the conduit.
 Extend the conduit approximately 12 inches (31 cm)
vertically out of the trench (from the ground surface) at the
designated EMU location.