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Planning Commission <br />September 7, 2006 <br />Page Three <br />10. General Note #6 should be revised to say Elfering and Associates. <br />11. A note should be added that states that only the City of Little Canada can <br />operate the watermain valves. <br />Detail Sheet <br />1. Additional street and utility details should be provided for review, including <br />manhole casting types, hydrant installation details, structure details, etc. <br />Stormwater Pollution Prevention Plan <br />1. The individual responsible for the implementation of the SWPPP should be <br />noted on the plans. <br />2. Once the casting has been installed on the catch basins, the only allowed <br />inlet control protection should be the Wimco. <br />3. The seed type for the ponding area should be revised to Type 350 applied at <br />a rate of 350 pounds per acre. <br />4. A note should be added that the seeding operations should be in accordance <br />with a technical letter issued by MnDOT dated November 14, 2005 and titled <br />"Metro District Turf Establishment Recommendations". <br />Stormwater Management Calculations <br />1. This submittal includes exfiltration for the infiltration area. If exfiltration is <br />proposed as a means for this site, then a percolation test shall be completed <br />and final data submitted for review. <br />2. The pond area in the drainage calculations shall be accounted for separately <br />from other drainage areas. A curve number of 100 should be used for the <br />pond area. <br />3. A storm sewer pipe capacities spreadsheet should be submitted for review. <br />4. Documentation should be provided as to the outlet path, location, and <br />elevation of the adjacent wetland to a creek, river, or lake to ensure that it is <br />not part of a larger isolated wetland without an outlet. <br />Please contact me if you have any questions regarding the above information at (763) <br />780-0450. <br />Sincerely, <br />ELFERING & ASSOCIATES <br />.-~- ~.. <br />Lee Elfering, P.E. <br />City Engineer <br />Ltr-090706-planning commission <br />10062 Flanders Court NE, Blaine, MN 55449 -Phone: (763) 780-0450 -Fax: (763) 780-0452 <br />