Agenda Packets - 2009/03/23 (2) - Laserfiche WebLink

Home Browse Search

April 13, 2009 Item No. 7J Page 2 While the preparation of the storm sewer system map as required by the MS4 permit is outside the scope of the mapping needs of the LSWMP, the basic MS4 map framework coincides with the framework for the LSWMP map. This provides an opportunity for the City to take advantage of the work being performed for the LSWMP and leverage it to complete the required work for the MS4 permit in a cost effective manner. The MS4 regulated stormwater features can be added to the drainage area map prepared for the LSWMP to create one map that serves two purposes: a drainage area map for the LSWMP and the storm sewer system map for MS4 permit compliance. The benefits to creating a single map for two purposes include cost savings in creating, printing, and updating the map, as well more efficient map management, eliminating the possibility of creating contradictory information if multiple maps are maintained. The concept for combining the LSWMP and MS4 requirements onto a single map has been reviewed by both City Staff and the City Council, and both support the idea. At their Work Session on February 2, 2009 the City Council requested that a scope and cost estimate be prepared for the work necessary to accomplish it. Bonestroo is the consulting engineering firm who is currently preparing the LSWMP for Mounds View, and who also has historically provided assistance to the City regarding its MS4 stormwater permit. Bonestroo has submitted a written proposal for the preparation of the combined LSWMP and MS4 map. The written proposal is in the form of a letter agreement that outlines the project understanding, scope of services, and proposed compensation for the work. Upon execution, the letter agreement would become a supplement to the existing Professional Services Agreement between Mounds View and Bonestroo for this specific work. A copy of the letter agreement, dated April 9, 2009, is included with this Staff Report. Ongoing Map Upkeep Once the MS4 map has been created, it will be necessary to update the MS4 map annually to identify new or revised stormwater features. One specific item that will need to be included will be the infiltration features constructed with each project in the Street and Utility Improvement Program. The City will receive the electronic files for the MS4 map created now, and will also receive the electronic files for new stormwater features as they are constructed. Provided that City Staff has the available resources and time, future MS4 map updates could be completed by City Staff, saving the City the cost of having a consultant perform the work.