The In-Line Stormceptor is our most commonly installed model. The In-Line unit is available in eight different unit sizes, ranging from 900 to 7200 gallon storage capacities. Each unit is constructed from precast concrete components and a patented fiberglass insert.
Normal Operating Conditions
Under normal operating conditions (more than 90% of all storm events), stormwater flows into the upper chamber and is diverted by a u-shaped weir, into the separation holding chamber. Right angle outlets direct flow around the circular walls of the chamber. Fine and coarse sediments settle to the floor of the chamber, while the petroleum products rise and become trapped beneath the fiberglass insert.
By-Pass Operating Conditions
During infrequent, high flow events (less than 10% of all storm events), peak stormwater flows pass over the diverting weir and continue into the downstream storm sewer system. This by-pass activity creates pressure equalization across the by-pass chamber, preventing scouring and resuspension of previously trapped pollutants. Stormceptor is the only device with an internal by-pass that prevents scouring of trapped pollutants.
The In-Line Stormceptor has been proven in laboratory and field tests to remove over:
You can inspect and maintain the In-Line Stormceptor from the surface, without entry into the unit. Perform maintenance once the stored volume reaches 15% of the Stormceptor capacity, or immediately in the event of a spill.
Maintenance intervals vary depending on the application. Therefore, we recommend quarterly inspections during the first year of installation, so you can accurately establish the maintenance schedule.
Remove oil and sediment through the 24-inch diameter outlet riser pipe. Alternatively, you may remove floatables and hydrocarbons through the 6-inch oil inspection port.
The requirements for the disposal from Stormceptor are similar to that of any other Best Management Practice (BMP). Consult local guidelines or your Stormceptor Area Marketing Manager prior to disposing the separator contents.
The In-Line Stormceptor has been applied numerous times as an NPDES Phase I Best Management Practice, and is an ideal solution for communities dealing with the NPDES Phase II Regulations.