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HomeMy WebLinkAbout20160438 Ver 1_Alamance 270_20160517Wrenn, Brian L From: Sent: To: Cc: Subject: Attachments: Brian Cail, William G Tuesday, May 17, 2016 10:29 AM Wrenn, Brian L Thomson, Nicole J Alamance 270 Alamance 270 from intersection.JPG; 17BP.7.R.63_Hyd_PSH.PDF; 270_Rdy_xpl- XS_SHEET_X-2.pdf; 270_Rdy_xpl-XS_SHEET_Xl.pdf Attached is drainage plans and x-sections. Plans look to be consistent with permit plan sheets but not the culvert report. The culvert report shows ditch from earlier design. Typically we do not update the reports for site drainage revisions if it does not affect the structure type, layout, size, etc. Usually the reports are not included in permit package (or even in the construction plans). Basically, culvert or bridge reports are just provided for the structural engineers to use for their plans and for our coordination with FEMA/NCFMP and do not show up anywhere else. The construction plans should reflect the most updated drainage plans. Also, attached picture of ditch (same quadrant as vehicle). Also viewed on street view. The existing ditch looks stable so I am comfortable with proposed grass lined ditch thru buffer, although based on slope would not get treatment. As mentioned yesterday negligible change in ditch flow so same pre/post discharge in ditch. Existing ditch also conveys to stream and is being covered up by project footprint on the right side, so relocated approximately 2' — 5'. Hope this info helps. Let me know if additional questions/comments. Thanks Galen Galen Cail Maintenance-Operations Support Hydraulics Unit Department of Transportation I rr�7all �:urrc,�l�ui�dci��;e, �C�u ai�d ��rurr�7 �U•ii� �e,i�dcr i� �ul�j��;� �u �C�h•ie, I"J � I�'�"ul�li�; I ta�:ur�:;� I..aw ai�d ir�7ay I�c rli��;lu�e,rl �u �C�h•ih�rl I�artie,�,