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Attachment 12. Memo from Carver County – May 8, 2017ell 16 Carver County Pu6Cu Works Administration 11360.7[tghway 212 Operations e 1 Program Delivery Cologne,MN 55322-8016 Parks Acme(952)466-5200 FaZ(952)466-5223 May 8, 2017 City of Chanhassen c/o Kate Aanenson Re: Development Review Comments: Avienda Preliminary Plat and PUD — Powers Blvd—TH- 212--Pioneer Trail—Bluff Creek Blvd—Audubon Road—Lyman Blvd Thank you for the opportunity to review the subject development in the City of Chanhassen. Consistent with the County Comprehensive Plan and County Codes, the following are comments and recommended conditions of approval as requirements for the subject development and any necessary permits to be issued for the project: 1. Prior to Plat and PUD approval, the County would like to review and approve the overall AUAR additional sub-report and figures of detailed intersection and related segment geometric design concepts with estimated costs, schedule by year, and table of proportionate cost sharing for the City, Developments, MnDOT, and County consistent with the County's cost participation policy. Costs to include intersection / lane upgrades; signal interconnect and signal / fiber communications; and lighting as needed. In particular, more information is needed for the level of improvements at the intersections of Sunset Trail/ Lyman Blvd and Bluff Creek Blvd/ Powers Blvd. 2. The plat and PUD will need to be revised to change the single lane entrance of Bluff Creek Blvd from Powers Blvd (CSAH 17) to Avienda Parkway to two lanes wide. This was noted with the AUAR comments and is a specific area of concern, that the Bluff Creek Drive road extension from Powers Blvd be designed for 2-lanes inbound through and around the proposed internal roundabout, such that adequate throughput is achieved at the critical Powers Blvd /TH 212 intersection. This 2-lane condition is needed as well to match the already built and committed intersection layout that stubbed in the future entrance to Bluff Creek Blvd. This 2-lane inbound for Bluff Creek Blvd is also consistent with the AUAR's notation for dual NB left turns on Powers Blvd at TH 212. 3. The intersection of Sunset Trail / Lyman Blvd should be reviewed in detail for intersection control alternatives. Intersection traffic operations at this location are a concern and it may be that access needs to be restricted to right-in / right-out until such time that higher order intersection facilities are available. Sunset Trail may need to be widened to account for this access condition as well as for two turn lanes out. In addition, numerous utilities are in place in the NW quadrant and some are being looked at to be relocated. Pedestrian ramps and other improvements will be required at Sunset Trail, including the potential to cross Lyman Blvd. 4. Prior to plat and site plan approval, and at least prior to 30% plans and specs, please provide for County review and approval roadways or access points intersecting with County highways. A special review of the design of Bluff Creek Blvd and Sunset Trail will be required. In addition, intersection lighting will need to be reviewed and included if not adequate as determined by the County. R:\Program Delivery\Transportation\Development Review\2017\ 5. Physical connections need to be made to the signalized main intersection and some adjustments may be required pending more review of detailed engineering plans. Some form of contract/ permit and surety with the County will be required for design, construction, and final inspection for the traffic signal and roadway approach facilities. Striping of lanes and/or crosswalks may be needed to be incorporated into the project. The installation of pedestrian push buttons/APS system may also be needed. 6. Related to rights of way, the boundary appears to be substantially monumented and abutting existing plats and right of way plats. No external or internal boundary conflicts noted on county parcel deed construction drawing. The plat may be required to denote controlled access along CSAH 18 or CSAH 17. Final plat, with up to date title work, will need county approval near the end of project. 7. Related to parks and trails, please provide for County review and approval some type of additional, declarative sub-report and figures of the specific plans and impacts to the City and County regional and linking trails plan for the highways and areas related to the AUAR and this development. Our understanding is that the City currently has a trail running along the west side of Powers in the project area. On Lyman, a trail is not identified in the project area; this is likely because the trail infrastructure runs on the north side and not the south side of Lyman. Neither Lyman nor powers is currently a part of the County's Comprehensive Plan for trail alignments. In addition, the County installed a 10 foot wide bituminous trail along the west side of Powers Blvd in 2014. The site plan grading plan shows new contours over this trail, so please clarify on this as well. 8. Prior to any work affecting or on County highways or in County right of way, the applicant shall coordinate plans with the County Engineer and obtain a Utility or Excavating/Filling/Grading Permit(s) from Carver County Public Works: (http://www.co.carver.mn.us/how-do-i/apply-for/a- permit). Final details of locations, grades, and profiles affecting County roads as well as any utility connections will need to be reviewed and approved prior to any permits. As notes to our understanding, the City stubbed in a new water main at the SW quadrant of Powers and Lyman. County has vacant fiber conduit and vaults along the south side of Lyman the entire length of this property. 9. Any damages, modifications, or changes incurred on County highways from current or approved conditions will need to remedied or updated at development expense, including costs incurred by the County. These are comments at this time. If you have any questions or need further assistance, please do not hesitate to contact me at dmccormick@@co.carver.mn.us or by phone at(952) 466-5208. Sincerely. Dan McCormick, P.E. PTOE Transportation Manager Carver County Public Works cc: Chad Braun (TE/Permits) R:\Program Delivery\Transportation\Development Review\2017\ 5. Physical connections need to be made to the signalized main intersection and some adjustments may be required pending more review of detailed engineering plans. Some form of contract/ permit and surety with the County will be required for design, construction, and final inspection for the traffic signal and roadway approach facilities. Striping of lanes and/or crosswalks may be needed to be incorporated into the project. The installation of pedestrian push buttons/APS system may also be needed. 6. Related to rights of way, the boundary appears to be substantially monumented and abutting existing plats and right of way plats. No external or internal boundary conflicts noted on county parcel deed construction drawing. The plat may be required to denote controlled access along CSAH 18 or CSAH 17. Final plat, with up to date title work, will need county approval near the end of project. 7. Related to parks and trails, please provide for County review and approval some type of additional, declarative sub-report and figures of the specific plans and impacts to the City and County regional and linking trails plan for the highways and areas related to the AUAR and this development. Our understanding is that the City currently has a trail running along the west side of Powers in the project area. On Lyman, a trail is not identified in the project area; this is likely because the trail infrastructure runs on the north side and not the south side of Lyman. Neither Lyman nor powers is currently a part of the County's Comprehensive Plan for trail alignments. In addition, the County installed a 10 foot wide bituminous trail along the west side of Powers Blvd in 2014. The site plan grading plan shows new contours over this trail, so please clarify on this as well. 8. Prior to any work affecting or on County highways or in County right of way, the applicant shall coordinate plans with the County Engineer and obtain a Utility or Excavating/Filling/Grading Permit(s) from Carver County Public Works: (http://www.co.carver.mn.us/how-do-i/apply-for/a- permit). Final details of locations, grades, and profiles affecting County roads as well as any utility connections will need to be reviewed and approved prior to any permits. As notes to our understanding, the City stubbed in a new water main at the SW quadrant of Powers and Lyman. County has vacant fiber conduit and vaults along the south side of Lyman the entire length of this property. 9. Any damages, modifications, or changes incurred on County highways from current or approved conditions will need to remedied or updated at development expense, induding costs incurred by the County. These are comments at this time. If you have any questions or need further assistance, please do not hesitate to contact me at dmccormickOco.carver.mn.us or by phone at(952)466-5208. Sincerely. Dan McCormick, P.E. PTOE Transportation Manager Carver County Public Works cc: Chad Braun (TE/ Permits) R:\Program Delivery\Transportation\Development Review\2017\