7.2 SR 02-07-2022 - Laserfiche WebLink

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Justin Femrite, PE City of Elk River Additional Design / Project Costs December 14, 2021 Page 3 Prior to adding the proposed City Trail, the County completed a topographical survey, developed a preliminary layout, held a virtual public engagement process, compiled a 30% Plan, completed the Wetland TEP and MnDOT CRU approval process, and confirmed the overall drainage guidance to be followed through final design. These items were established before adding the City Trail. Additional professional services will be needed to incorporate the City Trail into the County's CSAH 33 project. We anticipate the following professional services will be needed, but are not limited to: • Revision to the overall Project Schedule • Topo surveys — south of CSAH 33 / west of Auburn St and potentially driveways (as needed) • Wedand Delineation / LGU / TEP amend previous delineation report • MnDOT CRU — coordinate / clear additional trail areas • Environmental Documentation o Coordinate with MnDOT Federal Aid Staff to add City Trail to CATEX o Review and update Noise Wall Analysis for trail • Update Preliminary design and layout to add City Trail o Confirm typical section rural to urban (south side) ■ Wider grading limits in key areas ■ Additional tree impacts / damages on private property o Review potential profile changes on CSAH 33 to reduce impacts south side of trail • Coordinate additional soil borings for widened trail embankments and/or walls • Identify need for retaining walls • Review driveway grading / tie-ins for trail cross slope • Review overall stormwater approach / redesign drainage system completely o Replace driveway culverts with storm system o Daylight storm sewer outside trail - impacts to properties o Identify new stormwater treatment areas / methods • Prepare materials for Public Engagement to highlight City Trail addition. • Update 30% Construction Plan and Estimate to reflect City Trail improvements • Review and coordinate need for additional Permanent and Temporary Easements • Final Design — incorporate additional trail / ped ramp items • Coordinate with MnDOT D3 on involvement needed for trail connection at TH 169 exit ramp.