#12 - Lake Elmo Elementary Final Plat

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Page: 3 9. Minimum floor elevations must be at least 2 feet higher than the adjacent 100-year HWL elevation. Also, all low opening elevations for all buildings must be at least 1-ft higher than any adjacent emergency overflow elevation (EOF). All building low floor and low opening elevations must be clearly labeled on the grading plans. 10. All localized low points (catch basins) and low areas (land locked basins) must be protected within a drainage easement up to the 100-year high-water level. The grading plans must be revised to label and clarify the purpose of all low areas. MUNICIPAL WATER SUPPLY 1. Connection to the municipal water system is available to the existing trunk watermain running along Lake Elmo Avenue (CSAH 17). The applicant will be responsible for connecting to the existing 16-inch trunk watermain along Lake Elmo Avenue (CSAH 17) in two locations to create a looped watermain network around the new school. A minimum 8-inch ductile iron watermain shall be extended internal to the site and throughout the property as necessary to provide connection to all proposed uses. 2. The project will require the placement of fire hydrants and water system valves internal to the site as determined by the Lake Elmo Public Works Director and Fire Department. The site plans show the watermain extension, hydrant locations and system valves generally consistent with City requirements. Revisions may be necessary as the Construction Plans are finalized. 3. Minimum 30-foot easements centered over the pipe/hydrant have been shown on the plans as required. 4. No watermain oversizing is anticipated as part of this Project. SANITARY SEWER SYSTEM 1. A Comprehensive Plan Amendment has been approved to expand the Municipal Urban Service Area (MUSA) for the property. Therefore, the extension of public sanitary sewer service will be required to serve the new elementary school. 2. The applicant will be required to construct a privately owned and maintained sanitary lift station on the district property and extend a private forcemain to a designated connection point to be located on the northeast corner of Lake Elmo Avenue (CSAH 17) and 10th Street (CSAH 10). The private forcemain will be combined with a new public forcemain to be installed by the City and extended south along Lake Elmo Avenue (CSAH 17) to the existing sanitary sewer at 5th Street. The new school sewer service will discharge by gravity to the new lift station. 3. It is anticipated that the sanitary sewer improvements will be partially constructed though a public improvement project with both the private and public improvements to be paid by the District. FINAL CONSTRUCTION PLANS & SPECIFICATIONS 1. Final Construction Plans and Specifications must be prepared in accordance with the latest version of the City Engineering Design Standards Manual dated January 2022, using City standard details, plan notes and specifications and meeting City Engineering Design Guidelines, unless otherwise approved by the City. 2. The Construction Plans dated January 7, 2025 and submitted with the Final Plat application may require revisions as determined by City plan review. No construction on the Project may begin until the applicant has received City Engineer approval for the Final Construction Plans; the applicant has obtained and submitted to the City all applicable permits, easements and permissions needed for the project; and a preconstruction meeting has been held by the City’s engineering department.