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File #: 15-0614    Version: Name: 6/15/15 - DOM Modifications
Type: Resolution Status: Passed
File created: 6/15/2015 In control: City Council
On agenda: 6/15/2015 Final action: 6/15/2015
Enactment date: 6/15/2015 Enactment #: R-15-213
Title: Resolution to Approve Modifications to Developer Offset Mitigation (DOM) Program Requirements
Attachments: 1. 2003 Resolution_Council Packet.pdf, 2. SSWWE Project Areas
Title
Resolution to Approve Modifications to Developer Offset Mitigation (DOM) Program Requirements
Memorandum
Attached for your review and consideration is a resolution to approve modifications to City's Developer Offset Mitigation (DOM) Program.

DOM was established on August 18, 2003 by Council Resolution R-362-8-03 to limit the potential for development sites exacerbating sanitary sewer backups or sanitary system surcharging during wet weather rain events. At the time DOM was established, the City was working to remove wet weather flows from the sanitary system in response to sanitary basement backups that occurred in various locations during large storm events in 1998 and 2000. This effort was mainly being implemented through the City's Footing Drain Disconnection (FDD) program established in 2001.

DOM requires developments that are creating new flow into the City's sanitary system to effect a net reduction in flow to the sanitary system. Applicable development projects must remove 120% of the estimated net new flow contribution from the development into the sanitary system.

The City recently completed the Sanitary Sewer Wet Weather Evaluation (SSWWE) project. Using over ten years of data, the SSWWE project evaluated the effectiveness of the FDD program at removing wet weather flows, assessed the future risk of basement backups, evaluated alternatives, and set direction for addressing the identified future basement backup risk. Among the project's findings was that the FDD program has significantly reduced the risk of basement backups in the five target, or focus areas, of the program. The evaluation also identified five additional potential wet weather problem areas in the system.

With the findings, the SSWWE project's Citizens Advisory Committee (SSWWE CAC) recommended to the City:

1. DOM should continue, but with modifications
2. Allow mitigation City-wide with provisions for sites upstream of the five SSWWE project areas
3. R...

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