2018.05.21 CC packet - Laserfiche WebLink

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Ms. Rachel Juba May 3, 2018 Page 2 Grading, Street, and Utility Plans 2. The western end of Street 1 will need to be relocated further to the south as indicated by the technical evaluation panel to avoid wetland impacts on the adjacent parcel. 3. The north end of Oneka Parkway will need to be shifted westerly to line up with the City's right of way to the north of the development. 4. Oneka Parkway to the south has a 110-ft right-of-way containing a center median from Frenchman Road north to this development. Previous discussions entailed the transition out of this center median which is proposed to take place within this development. The Oneka Parkway right-of-way within this development transitions to 80-ft and eliminates the center median. Staff is working with the development team to provide a raised concrete median transition that eliminates the center median rather than the striped transition proposed. 5. Project phasing will continue to be evaluated to ensure that stormwater and water reuse accommodations are available for each phase. A phasing plan for grading will help address this as the site will require storm sewer and grading beyond initial phase boundaries. This is not unusual and staff expects more of a mass grading approach to build up the site and accommodate stormwater and water reuse needs. 6. Water service is provided by connecting to the existing watermain located within Oneka Parkway, Ethan Trail, and Falcon Avenue. 12" trunk watermain extends the entire length of Oneka Parkway. Trunk watermain oversizing will be reimbursed by the City of Hugo. 7. Sanitary sewer service is provided from the southerly portion of the site by direct connection to the existing systems within Oneka Parkway, Ethan Trail, and Falcon Avenue. The northern extents of the proposed development are the limit of what can be served by gravity sanitary sewer. As outlined in the comprehensive sanitary sewer system plan, a lift station will be required directly to the north of Oneka Place for future development. Stormwater Management 8. The applicant has submitted their Storm Water Management Plan for the site, including the appropriate storage, rate control, treatment, and volume reduction. The applicant is utilizing water reuse as a means to irrigate the development and meet a portion of the stormwater management requirements. 9. The applicant is meeting approximately 50% of the volume reduction requirement by utilizing water reuse. The remaining volume control requirement is met through the dead pool storage provided in the NURP ponds. 10. A water balance analysis has been submitted as part of the stormwater submittal identifying adequate water supply with the stormwater basins to sustain water reuse. 11. A detailed groundwater analysis has been submitted to identify the elevation of groundwater. The findings have been used to identify minimum floor elevations that provide required separation from groundwater. S,Vs—R_JubalRochellDEVELOPMENTPROJECT51Lerou PropertylOoeko Pl—c Neliminary Plat and PUDIEng Memo Oneka Place 050318.doc