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HomeMy WebLinkAbout20140090 Ver 5_U2579B bank stabilization issues_20190201Wanucha, Dave From: Sent: To: Cc: Subject: Attachments: James and Dave, Euliss, Amy Thursday, January 31, 2019 9:08 AM Lastinger, James C CIV USARMY CESAW (US) (James.C.Lastinger@usace.army.mil); Wanucha, Dave Kiser, Marcus K; Puckett, Lester L; Wyrick, Scott D; Nifong, Johnny R U2579B bank stabilization issues_ Martin Mill Creek stablization.pdf; Martin Mill Creek stablization 2.pdf; U2579B_WESTON_BROOK_TR_CREEK_Rdy_dsn_PLAN_SHEET.pdf As you know, its been a very wet fall and winter. We have had multiple large events (100+ year storms) in the area. We have a few locations where streams are undermining or will undermine our fill slopes and need to be addressed for long term stability. One area is downstream of the culvert on Smith Creek. There are a few locations along Smith Creek that we are going to investigate further to determine the appropriate method. The fill in this area hasn't been installed yet, so we have a little more time to come up with a plan. The other area is permit site 8. Martin Mill Creek has migrated significantly since the project started and is now undermining the fill slope for the bridge. I have included a plan sheet that shows the original location of the stream and the new locations, and a couple pictures. In the first picture you can see the amount of sand that has been deposited forcing the stream to migrate away from it and toward our slope. I outlined the new channel location. In the second picture, you can see rip rap in the distance (circled in red). This is where the stream has migrated to and is undermining the fill slope. The plan here would be to install a channel with the banks lined with rip rap through the sand and connect with the stream on the other side, and fill the old channel. I would like to know if you are ok with us proceeding with this repair and submitting a permit modification package for all sites at the same time. Let me know your thoughts. Amy Euliss Division 9 Environmental Officer North Carolina Department of Transportation 336 747 7802 office aeuliss ncdot.qov 375 Silas Creek Parkway Winston Salem, NC 27127-7167 � � �. r� �-� �.f=' I i7�•i�ll c;urrc;,�,l�ui�dci�c.c� �C�u ai�d ��rur�7"i ��I�i,, ;�,c�i�dcr i,, ;�,ul�jcc.� �u �C�I�c� I"J C I�:"ul�lic. I�tac;uru,, I,avv ai�d r�7"i�y I�c di,,c.lu,�,c�d E�u �C�I�h�d I�artic�„�,, 1 � � � � U -2579B l � � � � �L U �L a Q 1 � G a � � � �o- 2�, 25, 0 2 � I N Z � N i w � \ �F � �� � r;�, � I I o� �i �� ; '�� j�-�; � I I � , � TT,T . — T _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ � I � �i �i �i wi �I �-'I I oi � m� i oi ~i � 3I /I �I d OI �I W � � Q � L � � 0 0 L m � 0 +� � m 3 �� �� z� w� �� �N �� U� �> � � N� � �� L O �Q �� O�, N�--� L i +' � Z � +' QO � �/ � i � r�Cl� �1 _ MAR TIN MILL CREEK REALI GNMENT �������,��� ��.��� II9� N�'7l' �T�]E IF�llB % W .���UdSII°J[°I�N DOCUMENT NOT CONSIDERED FINAL UNLESS ALL SIGNATURES COMPLETED LEGEND �V� � � I I I I I EDGE OF SOIL ROAD ............................:------------- 2019 RECENT EDGE OF STREAM ................. ORIGINAL EDGE OF STREAM ................. OI�IGINAL '1'Uf' UI%' �ANK ......................... FLOW DIRECTION ........................................... I\ . _ _ _ _ _ _ / � I I I I I I I I I VAR. 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