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CONSTRUCTION STAGE 3
1/ Y Y Y Y Y Y Y Y Y Y Y Y YYY
A) AFTER SEDIMENT BASIN OUTFALL AREA IS FULLY STABILIZED,
ADJUST SEDIMENT FENCE AS SHOWN ON THE PLANS.
B) CONSTRUCT BYPASS DITCH AT WEST SIDE OF DUKEVILLE ROAD WITHIN
THE LIMITS OF THIS PHASE AND INSTALL SILT FENCE AT OUTFALL AREA
C) INSTALL TEMPORARY DIVERSION ON THE EAST SIDE OF THE SEDIMENT
BASIN AS SHOWN ON THE PLANS.
D) PERFORM GRADING AND IMMEDIATELY STABILIZE AREA NORTH OF THE
TEMPORARY DIVERSION TO THE OUTFALL AREA.
E) CONSTRUCT ATTENUATION BASIN AROUND OS-02 ON EAST
SIDE OF DUKEVILLE ROAD PER THE FOLLOWING SEQUENCE:
i) EROSION CONTROL - CONSTRUCT STRUCTURE SO THE
DISTURBED AREA IS MINIMIZED. DIVERT SURFACE WATER
AWAY FROM BARE AREAS. STABILIZE THE BASIN AND ALL
AREAS DISTURBED IMMEDIATELY DURING CONSTRUCTION OF
THE BASIN AS INDICATED ON THE PLANS.
ii) SITE PREPARATIONS - CLEAR, GRUB, AND STRIP TOPSOIL
FROM AREAS UNDER THE EMBANKMENT TO REMOVE STUMPS,
VEGETATION, ROOTS, AND OTHER OBJECTIONABLE MATERIALS.
DELAY CLEARING THE POOL AREA UNTIL THE EMBANKMENT IS
COMPLETE AND THEN REMOVE BRUSH, STUMPS, AND OTHER
OBJECTIONABLE MATERIALS TO FACILITATE SEDIMENT
CLEANOUT.
iii) CUT-OFF TRENCH - EXCAVATE A CUT-OFF TRENCH ALONG THE
CENTERLINE OF THE EARTH FILL EMBANKMENT. CUT THE
TRENCH TO STABLE SOIL MATERIAL, BUT IN NO CASE MAKE IT
LESS THAN 2 FEET DEEP. THE CUT-OFF TRENCH MUST EXTEND
INTO BOTH ABUTMENTS TO AT LEAST THE ELEVATION OF THE
RISER CREST. MAKE THE MINIMUM BOTTOM WIDTH WIDE
ENOUGH TO PERMIT OPERATION OF EXCAVATION AND
COMPACTION EQUIPMENT, BUT IN NO CASE LESS THAN 2 FEET.
MAKE SIDE SLOPES NO STEEPER THAN 1:1.
1=,
iv) EMBANKMENT - BEGIN CONSTRUCTION OF THE EMBANKMENT
WITH APPROVED FILL. MATERIAL CONSISTING OF CLEAN
MINERAL SOIL, FREE OF ROOTS, WOODY VEGETATION, ROCKS,
AND OTHER OBJECTIONABLE MATERIAL. SCARIFY AREAS ON
WHICH FILL IS TO BE PLACED BEFORE PLACING FILL. PLACE
FILL MATERIAL IN 6 TO 8 INCH LOOSE LIFTS OVER THE ENTIRE
LENGTH OF THE FILL AREA AND COMPACT TO 98% STANDARD
PROCTOR DENSITY AT ± 3% OPTIMUM MOISTURE CONTENT.
F) PERMANENTLY PLUG AND ABANDON EXISTING 12" CULVERT AS
INDICATED ON DRAWING. RUNOFF WILL BE ROUTED TO
IMPROVED EXISTING CHANNEL.
G) IMPROVE EXISTING CHANNEL ON EAST SIDE OF DUKEVILLE ROAD
AS INDICATED ON DRAWINGS. WORK DOWNSTREAM TO UPSTREAM
AND INSTALL GEOTEXTILE FABRIC AND RIPRAP IMMEDIATELY AFTER
GRADING.
H) INSTALL SOUTHWEST TEMPORARY CONSTRUCTION ENTRANCE FOR
PARKING LOT AREA.
A
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-CHW- OVERHEAD WIRE
: BENCHMARK
--o----o- CHAIN LINK FENCE
_,,, .. _-; TREE LINE
MONITORING WELL
POWER POLE
-� �"
LIGHT POLE
FIBER OPTICS
FO - FIBER OPTICS LINE
--U0E-- UNDERGROUND UTILITY
`Lol UNDERGROUND ELECTRICAL
TPF- TREE PROTECTION FENCE
® PHASE 3 (TO REMAIN UNDISTURBED DURING PHASE 2)
PHASE 1 & 3 OVERLAP
o°0°0°0 3:1 SLOPE (MATTING REQUIRED) SEE DETAIL ON S06
PROPOSED RIP RAP
CONSTRUCTION ROAD STABILIZATION (6" DEPTH)
-" ---_ ".-' DITCHLINE CHECK DAM
- WD- - WETLAND DELINEATION
WETLANDS
SEEDING
'i'P - - TREE PROTECTION FENCE
► 5. NO GRADING OR EARTHWORK DESIGNATED AS PHASE
3 IN ACCEPTABLE UNTIL PHASE 3 COMMENCES. AREAS
► MAY BE STABILIZED OR IMPROVED ABOVE THE GROUND
► SURFACE LEVEL USING AGGREGATE MATERIAL TO ALLOW
► FOR CONSTRUCTION EFFORTS AND MINIMIZE
► DISTURBANCE. ADDITIONAL BMPS WILL BE ADDED TO
SUPPORT CONSTRUCTION AND SUPPORT EFFORTS, ANY
► AREAS DAMAGED FROM CONSTRUCTION VEHICLE
► MOVEMENT, MATERIAL / EQUIPMENT STAGING,
► INSTALLATION OR MAINTENANCE OR ADDITIONAL BMP,
► OR OTHER CONSTRUCTION SUPPORT SHALL BE
STABILIZED.
1
2
3
2
5
R
-STR--
STREAMALIGNMENT
4
REMOVED UNDISTURBED AREA, ADDED SWALE,
SILT FENCE AND REMOVED SECTIONS
09/07/18
EDS
3
REVISED LOD AND PIPE LOCATION
07/12/18
EDS
TJS
GPL
JRH
UNDISTURBED AREA WITHIN PROJECT BOUNDARY
2
ISSUED FOR CONSTRUCTION
05/29/18
MPL
TJS
GPL
JRH
1
ISSUED FOR PHASE 2 PERMIT APPLICATION
05/23/18
MPL
TJS
GPL
JRH
SEEP DRAINS
0
ISSUED FOR PHASE 2 PERMIT APPLICATION
03/23/18
NO.
REVISION
DATE
DR/DNR
ORENG
TSCK
ENGCK
---- '---'
SILT FENCE
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'
CONSTRUCTION ROAD ENTRANCE
DUKE
CAST IN PLACE OUTLET STRUCTURE
7
O
CATCH BASIN / MANHOLE (NCDOT 840.52)
ENE
R Y®
--ST--
UNDERGROUND STORMWATER PIPE (CHDPE)
OWNER'S DRAWING NUMBER
SHEET
REV
a ,.
-1
SEDIMENT BASIN
BAB-16438-00-C-300
08
4
`�'><<`t;,'
EXISTING RIP RAP
,
-WB-
WATTLE BREAK
HRV
SILT FENCE OUTLET
I9-
ZACHRY ENGINEERING CORPORATION - 255 EAST HEBRON STREET, CHARLOTTE, NC 28273
NORTH CAROLINA BOARD OF EXAMINERS FOR ENGINEERS LICENSE #F-1171
ZACHRY GROUP - 527 LOGWOOD AVENUE, SAN ANTONIO, TX 78221
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF ZACHRY ENGINEERING CORPORATION ('ZACHRY').
ALL RIGHT, TITLE AND INTEREST IN AND TO THIS DOCUMENT, INCLUDING ALL INFORMATION CONTAINED IN
1c
THIS DOCUMENT, SHALL BE GOVERNED BY THE APPLICABLE CONTRACT BETWEEN ZACHRY AND ITS CUSTOMER
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DOCUMENT IS NOT
INTENDED OR REPRESENTED TO BE CONTRACT,OR, IN THE ABSENCE OF SUCH A U TABLE FOR ANY UNAU UNAUTHORIZED UNED BYSE OR REUSE.
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DRAINAGE SWALE & ATTENUATION BASIN GRADING
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DRAWN/DESIGNER ORIGINATING ENG
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