Project Deliverables

The Irondale Gulch Outfall Systems Plan will be completed in three phases. In each phase a draft report is presented, the project sponsors review and comment on it, and then the final report is produced. Each phase has a unique "stand alone" document that is available to the public.

Baseline Hydrology Phase

The Baseline Hydrology Phase serves to quantify the peak stormwater flows associated with the different return frequency storm events. The hydrology takes into account the existing and future land use conditions and is used as the baseline hydrology for the Alternatives Evaluation Phase and the Conceptual Design Phase. The hydrology will update the 2003 hydrology model with the latest version of CUHP and EPA SWMM as well as update the model with the most current land use information and drainge infrastructure.

Alternatives Evaluation Phase

The Alternatives Evaluation Phase of the project investigates improvement scenarios to assure that the most appropriate design recommendations are made. These improvements include channel and roadway improvements, channel stability measures, water quality recommendations, relocated detention alternatives and will investigate a suitable outfall for the Irondale Gulch Watershed.

Conceptual Design Phase

The Project Sponsors will create a Selected Plan from the available alternatives and the Recommended Plan within the Alternatives Evaluation Report. This phase of the project develops the Selected Plan into a more detailed Conceptual Design. The purpose of the Conceptual Design Phase is to define the critical design elements in greater detail and to refine the expected cost of implementation.

Available Documents

Please direct comments or questions to:

Richard Ommert, P.E., CFM
Email: ommert@moser-eng.com
(303) 757-3655