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Page 1 of 2 DATE: December 14, 2015 TO: Honorable Mayor and City Councilmembers Sue Iverson, Acting City Administrator FROM: John Anderson, Acting Public Works Director SUBJECT: Stormwater Outfall Inspections and Pond Assessment Requested Action Accept proposal from Elfering & Associates Inc. dated December 7, 2015 in the amount of $22,000 for Outfall Inspection and Pond Assessment Background The City of Arden Hills has a permit to discharge stormwater issued by the Minnesota Pollution Control Agency. The Permit is known as National Pollutant Discharge Elimination System (NPDES) and is issued to all Municipal Separate Storm Sewer Systems (MS4’s) in the state of Minnesota. This permit requires the City of Arden Hills to complete various tasks related to stormwater. The proposal submitted by Elfering & Associates completes two required tasks for 2015 and 2016, namely Outfall inspections and Pond Assessment. Discussion The City of Arden Hills is obligated by its NPDES-MS4 permit to inspect all the outfalls in the city on a 5 year basis or roughly a minimum of 20 percent per year. The last time the City had a comprehensive inspection of Outfalls was 2011 and this was performed by Elfering and Associates and covered all outfalls identified by the city at that time. The 2011 inspection covered about 380 outfalls. There was another series of inspections in 2013 completed by the Engineering department. The goal of this round of inspections would be to cover roughly 50 percent of the outfalls in city and satisfy the 2015 and 2016 required inspections. The process of inspection since the initial round has been streamlined to utilize a smart phone application customized for this purpose. These inspections help the Public Works Department prioritize repair work and identify areas of illicit discharge. CONSENT ITEM – 6M MEMORANDUM