Agenda - Public Works Committee - 12/18/2018

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CITY OF RAMSEY LAND USE APPLICATION TECHNICAL REVIEW FILE DDPAWG ATEECEMBER ROJECT DDRESSEST OF ERMANIUM 12,2018S,172 ND TREETNORTH OF L() ANE NEW P.CM ROJECTTITLEOVENANT EADOWS E# SCROW D: Engineering EPARTMENT Name:Leonard Linton T Phone: 763 433-9834 ECHNICAL Email: llinton@ci.ramsey.mn.us R: EVIEWER Covenant Meadows subdivision was approved and constructed in 2017. The Engineering Department reviewed and approved the plans for the project and provided inspection services during construction. An adjacent resident was not happy about the project going in. Staff worked with him to try to address his concerns. The Developer also performed extra work to address his concerns. Staff brought forward plans for reconstruction of Germanium Street which serves this area at the November 13, 2018 City Council meeting in a public hearing to consider approving the feasibility study for reconstruction of the streets in this area. The resident made statements that the drainage for Covenant Meadows was wrong and should not have been approved. Review of Drainage Staff has analyzed the pre-development and post development conditions related to the resident’s lot. Two exhibits were prepared showing these conditions. The pre-development conditions were 11.125 acres draining towards this property. The runoff for the 2, 10 and 100 year storms is 0, 0.1 and 3.1 cfs respectively. The post-development conditions are 1.306 acres draining towards this property. The runoff for the 2, 10 and 100 year storms is 0, 0.02 and 0.75 cfs respectively. The Covenant Meadows project intercepted 9.819 acres of runoff and directed it to two stormwater ponds constructed on the site. The ponds were designed to hold back to back100 year storms, with the net effect that there would not be runoff from the site for the 100 year storm.