2023 09 19 City Council Packet

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assist auditing existing structures for accuracy  with the system. They have 
allocated $28,000 for these activities and they should be completed by May 2024. 
4. Hydrologic and Hydraulic Modeling 
a. After collection of survey data and 2007 FEMA model data, Gresham Smith will 
develop a new hydrologic FEMA HEC-RAS model for the City. This model will show 
real-time stormwater run-off impacts throughout the City based on NOAA  24-hr 
design storm events. This model is essential to identify or validate critical areas of 
the MS4 network where there are needs  to attenuate and infiltrate stormwater 
run-off. They have allocated $122,000 to this activity and it should be completed 
by Sept 2024. 
5. Stormwater Masterplan 
a. After collection and modelling efforts  have been completed, Gresham Smith will 
develop a stormwater masterplan. This plan will holistically assess the City’s 
existing MS4 system. It will identify areas of concern, area for opportunities, and 
also provide ranked/ prioritized improvement projects to improve  water quality 
throughout the City, which is a core goal of the City’s MS4 permit. They have 
allocated $105,000 for this activity and it should be completed by Feb 2025. 
6. Stormwater Utility Fee Development 
a. The City is in dire need of an established MS4 utility fund. Because managing and 
conveying stormwater requires a “built” environment like other utilities, there 
needs to be dedicated revenue allocated to maintaining and replacing the system 
at end-of-life. Based on data collected from the field, Gresham Smith will assist in 
developing an  MS4 utility rate system for residential and non- residential uses. 
They will develop tiers based on impervious area data sampling from aerial 
imagery, as well as credit/incentive systems to promote redevelopment and green 
infrastructure practices to further reduce run- off coefficients and improve water 
quality. They have allocated $85,000 for this activity, and it should be completed 
by July 2025. 
7. Asset Management/Work Order Platform 
a. In addition to updating the MS4 asset database, Gresham Smith will also assist the 
City in implementing an electronic asset management/work order platform to 
track activities related to MS4 assets. There are two primary platforms the City is 
interested in, and Gresham Smith will assist in selection and implementation of 
one of these. They have allocated $13,000 for this activity and it should be 
completed by Oct 2024. 
 
Lastly, there are expected reimbursable expenses to the tune of $22,000, for items such as travel 
expenses, presentation materials , etc. This brings the total proposal amount to $502,000 for 
professional services.  
 
The Council should also be aware that there are additional activities that Gresham Smith cannot 
budget for at this time , that will need to be approved at a later date . These include design, 
bidding, and construction administration costs for one (or more) construction projects that are 
identified in the masterplan. The grant application has approximately 2 million allocated for 
capital improvement s (construction costs).  Our plan will be to bring a separate proposal for 
design and construction services to Council to approve once target projects are identified that fit 
within our budget and timeline constraints.  
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