The Pine Creek WWTP is a major part of the future sanitary treatment infrastructure for the City of Calgary and will support southward growth in the City for decades to come. Major municipal development on the west side of the Bow River is to be supported through the construction of a 1.95 m diameter sanitary trunk that is expected to convey sanitary flows up to 3.8 m³/s along a 210th Ave SW utility corridor. In the last few kilometres before reaching the Pine Creek WWTP, the sanitary trunk must come down the Bow Valley escarpment. With a gradient of approximately 10% over a 500 m length, a great deal of energy must be dissipated in a controlled manner.