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RESOLUTION: 2002-46
SUBJECT: Prioritization Criteria for Stormwater Management Utility Projects
RECOMMENDATION: It is recommended that City Council adopt a resolution establishing criteria to prioritize stormwater capital projects.
FUNDING SOURCE: Stormwater Management Utility
SUMMARY AND BACKGROUND OF SUBJECT MATTER: The Stormwater Management Utility fee is used for several purposes related to managing stormwater in the City. Significant portions of the fund are intended for improvement or replacement of stormwater pipes, channels and other facilities. These construction projects can be categorized in three ways:
- Major Drainageway Projects,
- Local Drainage Improvements, and
- Maintenance of Major Drainageways.
Given the large volume of project needs, it is necessary to establish criteria by which projects will be evaluated to establish priorities for funding. The attached resolution will establish criteria for prioritization of drainage projects. Each of the following three paragraphs addresses one of the three project types listed above.
Major Drainageway Projects
In 1999 the City Council reviewed criteria for major drainageway projects as proposed in Policy Report 99-21 and accepted the criteria by verbal consensus. It is now recommended that the criteria from that Policy Report continue to be used for major drainageway projects and be formally adopted. These projects implement the master plans for the major gulches throughout Lakewood. The total need for major gulches is approximately $40 million. Specific projects will be recommended to City Council in the Capital Improvement and Preservation Program. The criteria reviewed by City Council in 1999 are:
MAJOR DRAINAGEWAY PROJECT PRIORITIZATION CRITERIA
· Public Safety
· Potential property damage in a 100-year flood
· Past or recent property damage and claims
· Frequency of past property damage
· Potential for imminent property damage
· Depth and velocity of floodwaters
· How long has the problem existed and how often does the problem occur
· Overtopping major or minor roadways during storm events
· Localized flooding or ponding during storm events
· Opportunities to coordinate with other planned City projects
· Opportunities to combine maintenance and capital projects
· Project cost
Local Drainage Improvements
Local drainage improvements are needed in areas where inadequate storm sewers were constructed at the time land development occurred. Initial identification of local drainage needs has occurred and the preliminary estimate of total local need is approximately $15 million to $20 million. The Capital Improvement and Preservation Program will include specific projects costing over $100,000. Local drainage improvements costing less than $100,000 will be shown in the budget narrative for the Stormwater Management Utility program. Proposed criteria include:
LOCAL DRAINAGE IMPROVEMENT PROJECT PRIORITIZATION CRITERIA
· Type of structure affected
· Number of properties affected
· Past property damage
· Frequency of flooding
· Street flooding
· Impacts on future maintenance
· School route or other pedestrian route
· Opportunities to coordinate with other planned City projects
· Project cost
Maintenance of Major Drainageways
Project prioritization criteria are also proposed for drainageway maintenance
needs that require a substantial expenditure. An example of this type of project
is the need to stabilize channel banks where significant erosion occurs. Since
these maintenance projects are often fully funded by the Urban Drainage and
Flood Control District, it is proposed that the City utilize prioritization
criteria previously developed by the Urban Drainage and Flood Control District.
Those criteria are included below:
PROJECT PRIORITIZATION CRITERIA FOR MAINTENANCE OF MAJOR DRAINAGEWAYS
· Impact of the failure on structures and the conveyance of stormwater
· Safety and liability
· Public perception
· Environmental concerns
· Impacts on future maintenance
· Opportunities to coordinate with other planned City projects
· Project cost
RESOLUTION ADOPTION DATE: July 22, 2002
ORIGINATED BY: Public Works Department
STAFF PERSON RESPONSIBLE: Jay N. Hutchison, City Engineer, 303-987-7916
DOCUMENTS ATTACHED: Resolution 2002-46
Attachment
SUBMITTED BY:
Dick Plastino, Director of Public Works
REVIEWED BY:
Joni Inman, Director Mayor and City Manager's Office
Michael J. Rock, City Manager
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