2023 09 19 City Council Packet

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m
odel will be simulated to evaluate cumulative benefits to stream flow 
characteristics and water quality issues.  
 
4.7 - Deliverables  
Engineer will provide a digital copy of the model s to Owner as part of the P roject 
final deliverables.  
 
Task 5 – Stormwater  Master Plan  
5.1 – Definition of Conceptual Stormwater Projects  
In this task , Engineer will  further define  and optimize potential stormwater 
improvements prior to developing costs and performing prioritization . 
Improvements may include those evaluated hydraulically in Task 4 and additional 
related projects to address water quality issues that did not require hydraulic 
analysis (for example sediment removal). Each project will be evaluated to identify  
supporting infrastructure needs, refine siting  and sizing, and identify permitting 
requirements. Engineer will meet with Owner to review preliminary project concepts 
and identify further refinements needed to enhance MS4 compliance, resiliency, or 
stack objectives with asset management needs. Owner comments will be 
incorporated and reflected in subsequent SWMP tasks below. 
5.2 - Preliminary Opinion of Probable Construction Costs (OPCC)  
A budget (planning level) OPCC will be computed for potential improvements using 
recent bid tab information of similar projects and input on the local bid climate from 
Owner staff. Recent bid tab  information, including prices and items as necessary, 
will be provided to the Engineer by Owner. Engineer will also use its own library of 
cost data for creation of OPCCs. P reliminary budget costs for improvements will 
include, at a minimum, the following elements: storm drainage improvements, 
channel stabilization materials, grading, necessary street 
improvements/replacements, floodplain benching, water and sewer utility 
relocations, erosion and sediment control measures, traffic control measures , 
miscellaneous items (e.g., fencing, walls, etc.), environmental mitigation costs, and 
easement acquisition estimates as appropriate.   
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