ADS Environmental Services FlowAlert QR 775011 A2 - Manual (Page 81)

Communication 4-13
Installation with monitor and antenna cable in manhole
11. Seal the space between the antenna cable and the corbel hole
with electrical duct seal or as required to prevent infiltration
into the manhole.
12. Backfill the trench, the area surrounding the base, and the
inside of the base to ground level. Make sure you firmly pack
the backfill in the trench beneath the cable at the corbel hole.
This provides a firm surface to protect the cable from possible
crimping as the backfill accumulates and packs over the cable.
Backfill in trench protecting cable