02/12/2003 P&Z Packet - Laserfiche WebLink

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• • • FEB -85 -2003 12:46 Engineering Review Bruggeman Properties, LLC CITY OF LINO LAKES 651 982 2499 P.10/11 Page 3 February 4, 2003 There are also concerns about the elevation of the groundwater to the bottom of the proposed stormwater main pond. The geotechnical report estimates that the ground water elevation in the area of the pond to be 888 with the bottom of the proposed pond to be 879. This indicates that the proposed stormwater pond will lose some of its holding capacity coupled with potential permit issues for excavating in groundwater. This potential issue needs to be addressed in future development plans for review. While the plan sheet makes some indication of where an overflow from the proposed stormwater pond may be directed, it is not specifically shown on the plans (GO. ). This issue needs to be addressed in future submittals for engineering review. It will also be important to address the downstream impact to adjacent properties as part of the overflow issue. The developer must obtain a stormwater permit with consequent review to the Rice Creek Watershed District. A copy of the approved permit application must be provided to the City of Lino Lakes prior to site construction approval by the City. This will include addressing wetlands issues. Storm sewer system materials and installation shall follow City of Lino Lakes engineering standards. Of further importance, future stormwater system submittals need to include the undeveloped portion of the overall development site so that downstream adjacent areas can be analyzed for impacts from the overall proposed development site. In general, it will be important to track where stormwater runoff goes and its impact to downstream properties and stormwater systems. Designated permanent drainage easements will be required for the stormwater conveyance and pending areas. 4. Bikeway /Sidewalk Systems Discuss with Lino Lakes City Staff the locations and types of public trails and walkways that will be necessary for the development site 5. Street/Grading Systems Discuss with City Staff if fifty (50) foot wide public RJW widths will be allowed for this development. Also, discuss with City Staff if thirty (30) foot wide (scaled from plan sheet G1) back to back of curb street width will be allowed in the development. In some past cases, the City has allowed twenty -eight (28) foot streets in order to reduce impervious area, but the ultimate width will be evaluated from traffic amounts, turning criteria, and other traffic measures. It is recommended that a thirty -two (32) foot wide street from back to back of curb and a sixty (60) foot wide right -of -way public corridor be used within the overall development site. No on- street parking would be allowed. Speed limit between 25 and 30 mph is recommended.