Mount Holly Pump Station - Slope & Geomembrane Protection
- GeoProducts
- May 5
- 2 min read

Over 150,000 square feet of 4" EnviroGrid was used within the Mount
Holly Pump Station Construction Site, which is part of a large-scale
project by Charlotte Water. The project aims to streamline wastewater
treatment services by replacing two aging municipal wastewater
treatment plants with two brand new pumping stations, one of which
being Mount Holly Pump Station. This new station will transport water
from two cities to the new Stowe facility, providing more localized
wastewater treatment services for Charlotte Water customers. The new
state-of-the-art facility will have the capacity to process over 15 million
gallons of wastewater per day.
The EGA 30 EnviroGrid® product was selected to provide slope stability
and geomembrane protection within the construction of the catch basin
ponds. After grading and compacting the subgrade on the slopes and
bottom of the storm flow basin, a drainage geocomposite was installed
directly atop the prepared surface. A layer of geomembrane liner was
then placed over the geocomposite before expanding the panels down
the slope. With the sides of the pond reaching a two to one incline, the
system was reinforced using high-strength tendon strapping, spaced at 5
tendons per panel and tied off directly to the cell wall, then to a PVC
pipe at the top of the slope to anchor the system.
The system was filled with 4 inches of concrete fill throughout the
sloped basin ponds. The continuity of this geocell system is highlighted
within this project, as it provides reinforcement to one of the pump
stations that will serve eastern Gaston County for years to come.
Geo Products is proud to have had EnviroGrid play a crucial role to create a lasting impact in the Stowe Regional Water Resource Recovery Facility project.
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