Agenda - Council Work Session - 07/26/2011

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CC Work Session 2.5. Meeting Date: 07/26/2011 By: Tim Himmer, Engineering/Public Works Title: Consider Acquisition of Drainage and Utility Easement at 16259 Coquina Street NW PORTIONS OF THIS DISCUSSION MAY BE CLOSED TO THE PUBLIC Background: During the process of gathering field information to implement the 2011 Street Maintenance Program (SMP), it was discovered that an exiting storm sewer was discharging runoff from the right -of -way onto private property at 16259 Coquina Street NW. After researching the available information there doesn't appear to be an existing drainage and utility easement over the pipes or encumbering the discharge /ponding area. Staff has met with the property owners to discuss this matter on a few occasions. They were familiar with the existing storm sewer condition that directed runoff onto their property, and haven't experienced any flooding concerns in the past. They are open to a right of entry to perform the corrective work identified in the plans, but they want to understand and investigate the option for a formal permanent drainage and utility easement. Staff prepared an analysis of the easement area necessary to comply with ponding standards, which due to no outlet location from the area (isolated basin), requires the storage of back -to -back 100 year rainfall events. Before executing a right of entry the property owners are looking for feedback from the Council on advancing this easement acquisition, and seeking clarification on potential terms and timing to complete. This item was discussed in special session on July 19, 2011, and the consensus of the Council was to begin the process of acquiring the necessary drainage and utility easement. Observations: An easement, or right of entry, is necessary to complete the planned improvements for the overlay of Coquina Street. The adjacent intersection, at Coquina Street and Coquina Court, experiences localized flooding and pavement deterioration (see attached map) because the outlet pipe that discharges onto the property at 16259 Coquina Street NW is buried, and the catch basin and pipes in the street are full of water. Runoff cannot get off the road and into the storm sewer because there are flat pavement grades and restricted flow in the pipes. In order to correct the problem staff has prepared a design to install a concrete valley gutter through the intersection, replace the existing deteriorated pipes and structures, and perform minor excavation and grading below the outlet pipe for positive drainage. Staff will provide additional information at the meeting, related to similar easement acquisition, so a discussion can be held on a potential offer to the property owners. Recommendation: Staff recommends the ability to negotiate the acquisition of a drainage and utility easement that would encumber the storm sewer system and ponding area located outside of the right -of -way on private property at 16259 Coquina Street NW, in an amount to be determined. If it is determined that the completion of this easement acquisition will extend beyond the timeline associated with the planned 2011 SMP improvements staff would like to execute a right of entry agreement, such that the required storm sewer improvements can be completed without affecting the rights of the property owner during the easement acquisition process. Funding Source: Funding for the acquisition of any necessary easement would be from the Storm Water Utility Fund. Council Action: