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Ms. Katie Larsen <br />04/04/2025 <br />Page 4 <br />The site will be served by 8- inch diameter main along with 4-inch Schedule 40 PVC <br />service pipe to each lot. Additional sanitary sewer stubs will be extended to the north, and <br />east. A lift station is proposed to serve the development and future sewer districts to the <br />east in conformance with the City's Comprehensive Plan. <br />Comments: <br />1. Connect to existing 10" PVC SDR 35 sanitary sewer main <br />a. Match existing slope <br />Note added. Existing invert and slope based on proposed stub elevation from <br />Natures Refuge. <br />2. [Lift Station] <br />a. The lift station can be raised by 2 feet. <br />Per discussion, the lift station was raised 4-feet. <br />b. Projected peak hourly flow from 228 residential units is about 120 gpm, so8" <br />sewers shown are sufficient. <br />Noted. <br />i. Forcemain will be 4". <br />Noted. <br />c. Deep 35' build at the lift station, but looks like it's needed to servethe <br />northeast corner by gravity. <br />Noted. <br />i. Looks like about 50' radius around wet well for excavation during <br />construction, hopefully enough unless Geotech requires shallower <br />embankment. <br />Noted. Assuming sandy soils — 1:1 minimum will be needed. <br />Easement does cover a 50' radius from the center of lift station. <br />Future maintenance should be covered. Sheet piling or trench <br />box should cover any embankment issues along the street side if <br />for some reason the lift station needed to be repaired. <br />d. Can the 12' build at the northwest corner serve the street extending north <br />outside the service area if desired? <br />No. Currently it does not. Please advise if this sanitary line needs to <br />service the area to the north. <br />Insulate all sewer with less than T cover <br />a. Consider lowering the watermain to limit conflicts between services and <br />mains <br />Watermain will be lowered as -needed for service conflicts — this will be <br />shown with final plans. <br />Transportation <br />The proposed development will have a primary access from Haywood and Glenwood <br />Drives. Which is the shortest route out the proposed neighborhood. The City also <br />requires a connection to Andall St. to the existing Arena Acers Development.The City has <br />an existing right of way to provide access to the easterly property. <br />Per the traffic study the connection to Andall St will receive minimal traffic, however it will <br />provide connectivity for public safety and the neighborhoods it serves. This connection is <br />in conformance with the City's Ordinances for adjoining adjacent subdivision for <br />reasonable circulation of traffic. The City of Lino Lakes' Comprehensive Plan requires <br />neighborhood street connections for reduced travel times and linking neighborhoods <br />together. <br />The City's Engineering and Public Safety departments submit that the roadway <br />connection to Andall Street shall be constructed as detailed below. <br />Trails and sidewalks <br />Nature Refuge North Addition Engineering Review <br />