12-05-2022 Council Work Session Packet

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Chapter 4: Transportation | 15Otter Lake Road Master Plan Avoidance Alternatives Each alignment alternative studied in this Master Plan was evaluated based on its ability to avoid wetland impacts and meet the needs of the project including meeting traffic demand and state aid design standards, providing property access, limiting parcel impacts, allowing for reasonable extension of existing infrastructure, and reducing roadway coverage within an existing gas pipeline easement. All of the alternatives, except the no-build, have proposed impacts to wetlands. The figure to the right and the tables on the following page summarize the total wetland impacts for each of the alternatives, and how each alternative meets the needs of the project. The city will engage the regulatory agencies in evaluation of the avoidance and minimization measures incorporated into the selection of a preferred alternative. Permits for impacts to wetlands will be required prior to construction. ALTERNATIVE 1 Alternative 1 extends Otter Lake Road from the existing terminus near Main Street to the north 0.56 miles where it then curves to the northeast and connects into 24th Ave. This alternative generally follows lot lines but does split parcels 133122410009 and 133122420001 which are under the same ownership. This creates an undesirable configuration for the landowner. The location of the alignment also provides access to all lots without the need for extensive access- road construction and extension of utilities. This alternative does cross an existing pipeline easement at an angle causing significantly more coverage over the pipeline than if approached at a right-angle. This causes the road to be constructed at a higher elevation for a longer portion of the roadway by increasing the length the two are sharing the same space. This alternative would impact a total of 2.80 acres of wetlands (Table 4-2). The roadway would impact the east side of the main Wetland 4 basin avoiding the largest part of the wetland. The east side of this wetland is essentially a constructed low-quality ditch channel and farmed hay field. The entirety of Wetland 23 would be impacted by this alignment; however this wetland is not likely under the jurisdiction of the USACE and likely qualifies for sequencing flexibility due to its degraded quality as a farmed wetland. The alternative generally avoids the main part of Wetland 12 to the north with minor impacts and then cuts between two lobes of Wetlands 11a and 11b, avoiding the larger parts of these basins. Wetlands 12, 11a, and 11b are also farmed wetlands. Alternative 1 results in the highest amount of wetland impact and does not meet the needs of the project and therefore was rejected.FallDr35E 35E AdaDr123 Ma i n St 123B 158thSt N 24th AveNEmpressAveNE n f i e ld AveNHerit a g e Pkwy24th Ave N Empress W ay N 14 148th S t N 24th Ave N Festival Food s Blue Heron Grill wetland 22 wetland4wetland 18 wetland 3 wetland 19 wetland 17 wetland 5 wetland 7 wetland 23we tl a nd12wetland 16 wetland 15 wetland 21 wetland 20 w etland8wetland 9 wetland 10 wetland 14 wetland 13 wetland 11 wetland 11 wetland 6 wetland A wetland B wetland 2-2 wetland 4-2 wetland 7b wetland 8b wetland M wetland J wetland K wetla n d L wetlan d G wetland C4 wetland C3 wetland Q wetland 1 wetland 2 wetland 5-2 wetla nd3- 2 Document Path: K:\019206-000\GIS\Maps\SequencingAnalysis\Fig3_Alignment Alts Date Saved: 10/31/2022¯1 inch = 600 feet 0 600 FeetOtter Lake Road Master Plan City of Lino Lakes Alignment Alternatives Alignment 1 Alignment 2 Alignment 3 Project Area Proposed Right of Way Wetlands