CWE performed an analysis and site evaluation for the construction of a stormwater treatment facility for the City of Agoura Hills.  The facility treats drainage from 9,473 acres. 2,522 of these acres are located within the City of Agoura Hills.  The land is located near the confluence of Medea Creek and Palo Comado Creek.

CWE developed the baseline project site information needed for conceptual design.  This involved completing a Site Conditions and Constraints Technical Memorandum which assessed important design issues that needed to be addressed.

An assessment was done of the project goals from Water Quality Master Plan (WQMP) and Enhanced Watershed Management Program (EWMP).  An assessment of all existing hydraulic conditions was conducted to see how the proposed project goals aligned.  CWE developed diversion concepts and treatment train alternatives.

The diversion structure alternatives were then analyzed to determine how they could be constructed within the existing flood channel.  Analysis determined how these structures would divert dry-weather runoff.

Treatment train systems and their implementation were a large part of the project scope.  CWE evaluated several potential options.  Trash and sediment settling devices were to serve as an important part of the site’s purpose.  Ozone disinfectant and Ultraviolet (UV) systems also needed to be defined.  Incorporation of a treatment wetland was another area researched.

Maintenance would play a key role in the chosen train system solutions.  Special consideration was given to the potential onsite storage capabilities and the equipment that could be stored there.

The potential for using the site’s treated water for public landscaping was researched.  This is another way the project could aid the community in being green.