Specifications include, but are not limited to: Activities of the Consultant may include but are not necessarily be limited to: Update existing 2016 stormwater model a. Use current edition of InfoSWMM (which is the program used in the 2016 model) b. Recalibrate the model with new stormwater flow (3 continuous monitoring points over 2+ years with 15 minute data) and precipitation data (NOAA), as well as updated stormwater mapping (GIS). c. Exercise the model and identify design capacity within selected stormwater basins and associated sub-basins, as well as deficiencies for various design storm events. Update Stormwater Design Manual a. Review existing Portneuf Valley Stormwater Design Manual and preferred stormwater treatment (detention and retention ponds). b. Update design standards for stormwater flow and treatment in compliance with NPDES permit and City needs. Stormwater Capital Improvement Plan Development a. Identify locations where stormwater detention/retention can be added in selected stormwater drainages to eliminate flow to surface waters from 95% storm events. b. Identify hot spot problem areas for shallow flooding and potential solutions.
