11/13/2002 P&Z Packet - Laserfiche WebLink

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Mr. Jim Studenski, P.E. S City of Lino Lakes November 5, 2002 Page 3 • 3. There are concerns regarding wetlands possibly crossing the sanitary sewer alignment. If there are wetlands that will need to be crossed, then these areas should be identified in plan and specification format including solutions for addressing any wetlands crossing issues. Generally, crossing a wetland with a sanitary sewer pipe is discouraged. 4. Since the 8" sanitary sewer line will be owned and maintained by the City, plans and specifications following City standards for utility construction in public rights -of -ways and/or easements. This work will require a permit (approval) from the Minnesota Pollution Control Agency for sanitary sewer extensions. D. Erosion Control: 1. Label and list on the plans an erosion control schedule for the project. 2. The City reserves the authority to site - inspect and provide instruction to the Owner for the installation, maintenance, repair and removal of all erosion control devices. This is regardless of whether it has been shown on the plans or not, if it is deemed to be in the best interests of the City. Owner to provide unlimited site inspection access to designated City Staff until such time as erosion control devices are no longer deemed necessary by City forces. 3. Owner's civil engineer to provide design for the type and depth of the growing medium material to be placed at the labeled infiltration basins, infiltration swale and other sod/seed areas throughout the development site: E. Storm Sewer System: 1. Storm calculations (Ray - 2nd Revised Carwash Site and dated October 10, 2002): • Page 3 under Subcatchment 3S, change Curve Number (CN) for pervious parking area from 10 to 49. • Page 5, revise calculations for Reach1R: NSWALE as outlet invert cannot be 896.4 as this is lower than any elevation throughout the storm system. • Page 7 under Pond 3P, West Infiltration Area and Routing #4: The modeling says that a "27" Horiz Orifice/Grate" is being used to convey stormwater to the existing pond along the westerly property line. From the information shown on Plan Sheet 1, an 8" PVC pipe would be the controlling factor. Please modify to fit the plan sheet or provide an explanation for how this component works. 2. Contours shown along westerly property line do not show enough detail and would fall into the adjacent private property. If as Plan Sheet 1 indicates, an 897 contour (not shown) would be needed on private property in order to construct to the 897.75 top of