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, <br /> • The emergency overflow for the west parking lot area should be clearly identified and <br /> labeled. <br /> • Additional storm sewer shouid be planned at the driveway apron along Old Crystal Bay <br /> Road to facilitate drainage along the existing very flat road edge. <br /> • The truck traffic patterns are consistent with the original project layout and are generally <br /> acceptable. At the time of the original Crystal Bay Business Center project,the trafFic . <br /> �volumes were significantiy higher,the road was under MnDOT jurisdiction, and a shared <br /> Wayzata Boulevard right-in/right-out access was discussed as a long-term plan. We <br /> would encourage beginning a discussion with Hennepin County regarding the Wayzata <br /> Boulevard/CSAH 112 access to the overall site. <br /> • This project will disturb more than 100 CY of material triggering Orono's erosion control <br /> ordinance. City code requires that an erosion controi financial security be submitted in <br /> the amount of 125% ofthe estimated cost to accomplish compliance with the SWPPP. <br /> The estimated cost for the project is$4,000 and the required security would then be <br /> $5,000. This includes silt fence re-installation, site seeding, and maintenance of catch <br /> basin sediment protection devices. � <br /> • We have estimated the total construction cost to be $262,176. A financial"guarantee <br /> should be provided for 150% of this amount, or$393,264. This cost estimate will need <br /> to be revised should additional storm water treatment requirements be placed on the <br /> project by Minnehaha Creek Watershed District. <br /> If you have any questions, please call me at(651) 604-4894. <br /> Sincerely, ! <br /> BONESTR00 <br /> � , ► . <br /> Darren Amundsen <br /> Cc: Tom Kellogg <br />