The project also included many innovative Low Impact Development principles which required establishing strong relationships with the various approving agencies in order to obtain the required approvals and acceptance of the engineering solutions.
Prior to reaching the facility, stormwater flows are conveyed in bioswales to evaporation/infiltration beds throughout the site. These techniques provide an initial reduction in flow rates/volumes and also provide some preliminary treatment, which reduces the requirements and cost of downstream infrastructure.
This project comprised a 250 acre parcel of farm land that was transformed into the first stages of a 2,000 unit master-planned residential community. This project required working through the initial planning process and through to the detailed engineering design. One of the unique characteristics of the project was the overall stormwater management scheme which culminated in a design that retained all of the rainwater from a 1:100 year rainfall event onsite and discharged through groundwater infiltration into the underlying river gravels.
TRC Ranch was designed by Progressive Engineering using Low Impact Development (LID) techniques and Best Management Practices (BMP's) to completely eliminate the outfall to the Bow River, thereby saving the developer in excess of $1M in construction costs. This was done by creating an infiltration pond on the site, which operates much the same as a dry pond, in conjunction with a forebay to provide treatment of the stormwater so that the infiltration bed does not become clogged with fines.
