20171134 Ver 1_REVISED 08-02-2018 - MC393 Revised Construction Sequence & Water Handling Alamance Co PHASE II_20180802

13' X 7' R C B C
REVISED CON STRU CTI ON SEQU EN CE STA. 14+ 14 - L-
TEMPORARY SANDBAG PHASE I
WALL (MIN. 9' HEIGHT) 1. CONSTRUCT STILLING BASIN (MIN. VOLUME =129 CUBIC YARDS).
2. INSTALL SPECIAL STILLING BASINS.
IMPERVIOUS DEWATERING 3. CONSTRUCT IMPERVIOUS DIKES (A AND B).
DIKES A& B PUMP 4. BEGIN BY-PASS PUMPING AND DEWATER THE AREA BETWEEN DIKES A& B.
� '\uF 5. WSTALL TEMPORARY 84"0 PIPE C IN THE STREAMBED.
TEMPORARY MSE WALL �� , � SPECIAL STILLING BASINS
��� 6. OPEN-CUT TRENCH & WSTALI TEMPORARY 84"0 PIPE A.
(MIN. 12' HE[GHT) �`��_c (SEE PROJECT SPECIAL 7. CONSIRUCT THE TEMPORARY MSE WALL TO A HEIGHT OF 12' MINIMUM & TEMPORARY
PROVIS[ONS) SANDBAG WALL TO A HEIGHT OF 9' MINIMUM, BUILDING THE DETOUR FILL BETWEEN THE
TDE. TDE—
J `°E ,q •, �`�e� WALLS.
i� �
� r`_ 8. REMOVE IMPERVIOUS D[KES A& B TO ALLOW THE STREAM TO FLOW THROUGH PIPE C.
E�«� Sl7LLING BAS]N � �
(�Inl. 1;�3 r_1') I �'o�
�i �' � C � ��
A � �
BY—PASS�
PUMP ��
��«—�i�%d n,i�—:,�� ,,,��i�—�i �W »B" � _i�—
M �
—M� ��>'�k�-��/W—_� � '�` \ _ /
�_ �{�
, � R/lb�{+!y'—a/N 4/w-�'��-��Nr—
_ _= - - — _ _ - - - - - - V - - — - - �— - - - - �— - - — - -J--- — - - — - � - - - _
� - - - - - - - --- - _ _ _ � / -- -- ---- -- _�-�
__-—--—— —--- -- --—-—— ---_——�_'— —,— —=— -- _—__——-----�=___--
- ,.. � -rr,,�— �n/„�.n a,��—M�a---u��� _ % � / i `` , �`\
/r�u'��1^ � _/w�/w-�� � / `- \ �l`"-�
�4� .�w����,� . - /�k—
� �
� ���' ��,..i�s`--�/w--�'/ ,/w--"/`�--T_/
� � � � �,LxLTII�ir. E,h'IG�� -
/ � i
�\� -� �
i �
` `�Q �
// \ ` ' � I '
�, �_.r—
�
IMPERVIOUS PHASE II
DIKE D 1. REMOVE PHASE I STILLING BAS1N.
2. CONSTRUCT ON-SITE DETOUR AND INSTALL TEMPORARY PIPES E AND F.
COMPLETE TEMPORARY 3. SHIFT TRAFFIC ONTO DETOUR.
SANDBAG WALL (FULL HEIGHT) � 4. [NSTALL TEMPORARY 84"0 PIPE D& OPEN CHANNEL DIVERSION USING 8MP 5.2.4.
COMPLETE TEMPORARY MSE � �� 5. WSTALL IMPERVIOUS DIKES C& D, DIVERTWG STREAM FLOW THROUGH OPEN
�r` CHANNEL DIVERSION AND PIPES D& A.
WALL (FULL HEIGHT) �� ���, 6. CONSTRUCT AND UTILIZE SKIMMER BAS1N 4.18 AS NEEDED FOR DEWATERING.
�J`� 7. REMOVE THE EXISTING BRIDGE.
--r`�� °� \\�"-'< �Z��� PIPE E 8. CONSTRUCT THE SINGLE 13X7 RCBC INCLUDING THE WLET WINGS & OUTLET WWGS.
J � Z��� PIPE F I ��� \ 9. CONSTRUCT PARTIAL BANK STABILIZATION ON THE WESTERN BANK AND ALL BANK
�e� STABILIZATION ON THE EASTERN BANK AT THE WLET END OF THE CULVERT.
�«'`� - \\, 10. REMOVE IMPERVIOUS DIKES C& D TURNWG STREAM FLOW THROUGH THE NEWLY
/ ��,,.
,t% - �� CONSTRUCTED CUIVERT & PIPE C.
,.�.
�\ i — -- _ 'r � _ 4 � g-5347
� � � � '' � � �� �fi; PROJECT N0.
, �,�--�„e—„a—�..�,,,�,d ,a— M ":���,,�—�,,�,� �, �' �� � �' � � � i�° � ,w—
��,�, �`� _,,�p �� p �,� �� �r � ALAMANCE COUNTY
— ��, ° w —� .�,. —. t � <� �,�,�,.
q '�'\ ����� STATION: � 4+14.00 —L—
_ __------ ---—_ — _�_�' — \——-----—_ � � � � — �_—-
-� - - , - - _ ��T -�"' __ �� �
-- - - - -- - - -- -- - - -�_ — ---- - - �.� - - - - � ��
_�_ � ��
--- - — - —' % - __*-- - '� - ` __-
STATE OF NORTH CAROLWA
�� DEPARTMENT OF TRANSPORTATION
-- , � - -------- � -----�- RALEIGH
- »—��,—���,--.,��—,��. -�,e----Wa--��—« O i�� � - - — _, w-
�M'�""������� � �� ' � ` � — CON STRU CTI ON
sr����v�, � , , � ,�,�,.�,�
, -�--�,�,���a,� Q
a_;�-1 ,
��
,�EA� �� � �-,�� �, �� - �,�/ ,��. ��m ,�o �,��,� ��,��,�,�Y SE U EN CE
�' '�'„ '�� / ,`�
-�� F�,� F�� --�� �, , � ' � --_ _ a y� � �>- ��,�F �` s� "�, , &
P� —,���"��'�` � -- "" ��� �.�E _ s a��q .�"�_ � WATER HANDLING
/ - - � //"� - . �. ` MOL7NTe1IN CREEK
� � \ - _ � - �,i,E _ / CONTRAGTORS, INC.
� �,i�� 14869
�����u_ "'f'`:FNciNE`�� :��' Mountain Creek Conh<icturs, [nc. REVISIONS SHEET N0.
/ OPEN CHANNEL IMPERVIOUS � �'�'�'Friiw;F�`�'` c�,i W�d ric s�oy-v,?o
� NO BY: DAIE: NO BV: DA7E: C-6A�CONST.
DIVERSION DIKE C �"""����� '�. o� �o,a orf��.: �s�s� aai-zoa� � 3 ��
REVISED 08/02/2018 - ADDED OPEN CHANNEL DIVERSION F�:[phone]