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Home My WebLink About20061804 Ver 16_More Info Requested - Email_20170404Strickland, Bev From: Homewood, Sue Sent: Tuesday, April 04, 2017 4:16 PM To: Imstocks@stocksengineering.com' Subject: SMP for Pod NE -2 and NE -5 at Flowers Plantation Michael, I'm reviewing the stormwater management plan for the above referenced project and have some items that need clarification. • The documentation you submitted notes that 15% of the impervious surfaces of the project are to be bypassed (23 homes and 14, 461 sf of road drainage). Can you explain this further. The stormwater requirements are to include all impervious surfaces at build out. • The Design Manual and MDC for all SCMs as found here, requires that all SCM's provide for erosion protection at the inlet and the outlets. I didn't see calculations and/or riprap at the inlet/outlets. • The MDC for all SCMs requires that SCMs shall have a method to draw down any standing water to facilitate maintenance and inspection but I did not see this shown on the plans. • The MDC for all SCMs requires that the SCM shall include an overflow or bypass device but I did not see an emergency spillway shown on the plans. • The MDC for all SCMs requires that every SCM shall be made accessible for maintenance and repair including access to the nearest public right of way that is a minimum of 10 feet and does not include lateral or incline slopes that exceed 3:1. 1 did not see that this has been provided. • The MDC for all SCMs requires that SCMs be located in permanent recorded easements and I did not see an easement shown on the plans. • The MDC for Wet Ponds requires that the dam structure shall be vegetated with non -clumping turf grass. Please provide a vegetation plan for the dam/embankment structure. Thanks, Sue Homewood Division of Water Resources, Winston Salem Regional Office Department of Environmental Quality 336 776 9693 office 336 813 1863 mobile Sue.Homewood@ncdenr.gov 450 W. Hanes Mill Rd, Suite 300 Winston Salem NC 27105 <5>"Nothing Compares,,., Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties.