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<br />2 of 4 <br /> <br /> <br />10062 Flanders Court NE – Blaine, MN 55449 – Ph: (763) 780-0450 Fax (763) 780-0452 <br /> <br />Site Plan <br />1. No pedestrian ramp is shown in the curb along the Accessible Route. <br />Grading Plan <br />1. The slope from the proposed driveway to the existing boulevard inlet is close <br />to 1:1 (H:V). Modify to achieve 4:1 slope and verify slope is acceptable to <br />Ramsey County since it is within the County right-of-way. <br />2. The longitudinal slope of the curb on the north curb line from the high point at <br />the entrance to the low point to the east is nearly .01%. Minimum slope <br />allowed on concrete curb is 0.5%. Modify high point or low point. <br />3. Provide detail on pedestrian ramp from the handicap stall unloading zone <br />onto the sidewalk. <br />4. Provide a swale along the east property line to direct water to Quebec Court. <br />5. Grades between the sidewalk and the east property line appear to be 2:1 <br />(H:V). Maximum slope allowed is 4:1. <br />Utility Plan <br />1. The applicant will need to provide a copy of the Ramsey County permits for <br />connection of utilities and access on the County right-of-way. <br />2. All watermain fitting bolts shall be stainless steel. <br />3. The connection to the existing sanitary manhole must be at the bottom of the <br />structure by core drill and a water tight boot installation. The invert/bench <br />area of the manhole must be redone to provide a smooth and defined flowline <br />through the structure. <br />4. The sanitary and water services should be shown with 10 feet of separation <br />between each other. We would also recommend the services be moved <br />farther away from the property line to increase the possibility of saving trees <br />along the south property line. <br />Stormwater Management Plan <br />1. Place clean out for the pond drain tile on the bank above the 941.60 so that is <br />can be accessed if infiltration is not occurring. <br />2. Verify storm inverts and pipe grades. There are some discrepancies. <br />3. The proposed drainage exhibit indicates the entire roof area of the facility will <br />be directed into the pond. Based on the architectural plan the roof drainage <br />is largely separated north and south and there is no piping shown that will <br />collect the roof water from the southeast corner of the roof and directed it <br />west to the pond. Details on how this water is collected and conveyed to the <br />pond must be provided or the drainage areas and calculations revised. <br /> <br />Drainage Calculations <br />1. The stormwater narrative outlines the water quality (filtration) requirement <br />and what the proposed design provides. The calculations indicate that <br />sufficient surface area is provided to infiltrate 4,692 cf of storm water within <br />48 hours, which is the required amount based on the impervious surface of