SW7111201_APPROVED PLANS_20111212

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
DOC TYPE
❑ CURRENT PERMIT
�O APPROVED PLANS
((❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
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EROSION CONTROL PLANS - LAYDOWN YARD
PASQUOTANK AND PERQUIMANS COUNTIES
NORTH CAROLINA
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NORTH CAROLINA STATE MAP
Know what's below.
Call before you dig.
NORTH CAROLINA: 1-800-632-4949
ENGINEERS:
FISHERASSOCIATES
135 Calkins Road, Rochester, NY 14623
Phone: [phone]
LOCATION MAP
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INDEX
DRAWING NO. TITLE OF DRAWING
COVER
GN-1 GENERAL NOTES AND LEGEND
GP-1 OVERALL PROJECT PLAN
IND-2 INDEX OF PLANS
SP-3A LAYDOWN YARD SITE PLANS
SP-313 LAYDOWN YARD GRADING PLAN
SP-3C BMP DETAILS
DET-3/7/8/9 DETAILS
APPROVED
NORTH CAROLINA ENVIRONMENTAL
MANAGEMENT COMMISSION
DIVISION OF WATER QUALITY
20_LL_
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FISHER ASSOCIATES, P.E. L.S. P.C.
S. SALMAN MOAZZAM, P.E.
DATE
LAYDOWN YARD PERMIT SUBMITTAL - OCTOBER, 2011

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GENERAL NOTES
PLANIMETRIC FEATURES, ORTHOPHOTOS, ELEVATIONS, AND CONTOURS WERE PREPARED BY
BOWMAN CONSULTING FROM AERIAL PHOTO DATA GATHERED IN 2011. CONTRACTOR
SHALL RESOLVE ANY DISCREPANCIES BETWEEN THE PLANS AND FIELD CONDITIONS.
SURVEYED BOUNDARY AND RIGHT OF WAY INFORMATION PROVIDED BY BOWMAN
CONSULTING, 2011.
THE ELEVATIONS SHOWN ON THESE DRAWINGS ARE TO BE CONSIDERED GUIDANCE AND
SHOULD BE ADJUSTED TO FIT ACTUAL FIELD CONDITIONS DURING CONSTRUCTION. THE
CONTRACTOR SHALL USE JUDGEMENT WHEN ESTABLISHING CONSTRUCTION GRADES AND
ELEVATIONS.
FROM THE CONTROL POINTS AND BENCHMARKS PROVIDED BY THE OWNER'S ENGINEER,
THE CONTRACTOR SHALL SUPPLY ALL CONSTRUCTION SURVEYING AND STAKING REQUIRED
TO BUILD THE PROJECT IN ACCORDANCE WITH THE CONSTRUCTION DOCUMENTS. THE
CONTRACTOR SHALL ALSO BE RESPONSIBLE FOR EXTRACTING STAKING COORDINATES
FROM THE CONSTRUCTION DRAWINGS PROVIDED BY THE OWNER'S ENGINEER. ELECTRONIC
COPIES OF THE CONSTRUCTION DRAWINGS WILL BE PROVIDED TO THE CONTRACTOR IF
REQUESTED. ALL STAKEOUT SHALL BE APPROVED BY THE OWNER PRIOR TO
CONSTRUCTION.
THE CONTRACTOR SHALL PROVIDE EROSION AND SEDIMENT CONTROL DURING THE PERIOD
OF CONSTRUCTION OF THIS PROJECT IN ACCORDANCE WITH THE NCDENR APPROVED
EROSION AND SEDIMENT CONTROL PLANS AND THE NC DIVISION OF WATER QUALITY
CONSTRUCTION GENERAL PERMIT NCGO1.
THE CONTRACTOR IS RESPONSIBLE FOR MAINTAINING DRAINAGE THROUGHOUT THE
CONSTRUCTION OF THIS PROJECT AND SHALL NOT BLOCK NATURAL OR MANMADE CREEKS
OR DRAINAGE SWALES CAUSING RAINWATER TO POND.
ALL MATERIALS AND SOILS SHALL BE DISPOSED OF IN PERMITTED DISPOSAL SITES.
CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ADDITIONAL NCDENR PERMITTED
DISPOSAL SITES.
THE CONTRACTOR SHALL APPLY FOR AND SECURE PERMITS FROM THE STATE AS
NECESSARY BEFORE DRIVING CONSTRUCTION EQUIPMENT OVER AND ACROSS THE STATE
HIGHWAYS AND ROADS.
THE WORK SHALL BE PERFORMED IN ACCORDANCE WITH THE LATEST EDITIONS OF THE
NORTH CAROLINA DEPARTMENT OF TRANSPORTATION (NCDOT) "STANDARD SPECIFICATIONS
AND DETAILS" AND ''NATIONAL MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES FOR
STREETS AND HIGHWAYS".
DISTURBANCE LIMITS ARE SHOWN ON THE CONSTRUCTION DRAWINGS. THE CONTRACTOR
SHALL KEEP ALL CONSTRUCTION ACTIVITY INCLUDING TRAVELING BETWEEN TURBINE
SITES AND CONSTRUCTION LOCATIONS WITHIN THESE LIMITS.
ALL OPEN EXCAVATIONS LEFT OVERNIGHT THROUGHOUT THIS PROJECT SHALL BE
PROTECTED BY FENCES AND BARRICADES.
WHILE BUILDING THE ROADS AND EXCAVATING THE TURBINE FOUNDATIONS EXCESS SOIL
WILL RESULT. THE CONTRACTOR SHALL DISPOSE OF THIS EXCESS SOIL IN AN
APPROVED MANNER. NO TOPSOIL WILL BE ALLOWED TO LEAVE THE PROPERTY FROM
WHICH IT WAS DUG. EXCESS TOPSOIL SHALL BE DISTRIBUTED INTO A THIN LAYER ON
LAND IMMEDIATELY ADJACENT TO WHERE THE TOPSOIL ORIGINATED. WHILE DOING SO
THE CONTRACTOR SHALL AVOID CAUSING RIDGES OR MOUNDS THAT WOULD MAKE IT
DIFFICULT TO CULTIVATE THE PROPERTY OR THAT WOULD CAUSE RAINWATER TO POND.
THE FINAL SURFACE OF THE DISTRIBUTED TOPSOIL SHALL BE SMOOTH AND FOLLOW
THE NATURAL CONTOUR OF THE LAND. ALL OTHER SOIL THAT WOULD NOT BE
CLASSIFIED AS TOPSOIL SHALL BE REMOVED FROM THE SITE AND DISPOSED OF AT A
DISPOSAL SITE ARRANGED FOR BY THE CONTRACTOR. THE CONTRACTOR SHALL OBSERVE
ALL APPLICABLE USEPA AND NCDENR RULES AND REGULATIONS DURING THE HANDLING
AND DISPOSAL OPERATION.
IT WILL NOT BE NECESSARY FOR THE CONTRACTOR TO REMOVE AGRICULTURAL CROPS
FROM THE FIELDS PRIOR TO TRAVELING ACROSS THEM WITH CRANES AND OTHER
CONSTRUCTION EQUIPMENT. SIMPLY PUSHING CORN STALKS OVER IN FRONT OF THE
CONSTRUCTION EQUIPMENT PROVIDES SOME STRUCTURAL SUPPORT.
THE FINISHED SURFACE OF CRANE PAD SHALL NOT SLOPE MORE THAN 1% IN ANY
DIRECTION. THE CRANE PAD SHALL BE CONSTRUCTED AS RECOMMENDED BY THE
GEOTECHNICAL ENGINEER.
THE CONTRACTOR SHALL PROOF ROLL THE SUBGRADE PRIOR TO ANY AGGREGATE
MATERIALS BEING PLACED. THE PROOF ROLL OPERATIONS SHOULD COMPLY WITH THE
GEOTECHNICAL ENGINEER RECOMMENDATIONS. IF IT RAINS BETWEEN THE TIME THE
FINISHED CRANE PAD SURFACE IS PROOF ROLLED AND THE WTG ERECTION CRANE IS TO
BE USED ON THE CRANE PAD, THE CRANE PAD SURFACE SHALL BE PROOF ROLLED
AGAIN TO SHOW THAT RAIN HAS NOT WEAKENED IT.
OVER LEGAL WEIGHT VEHICLES SHALL FOLLOW THE DESIGNATED DELIVERY ROUTE ONLY.
PERMANENT PIPE CULVERTS SHALL BE SMOOTH INTERIOR CORRUGATED PLASTIC
PIPE. TEMPORARY PIPE CULVERT EXTENSION MATERIALS SHALL BE DETERMINED
BY THE CONTRACTOR. TEMPORARY CULVERTS SHALL BE CHOSEN BASED ON
ANTICIPATED EXPOSURE TO OVERWEIGHT CONSTRUCTION TRAFFIC.
CONTRACTOR SHALL FIELD VERIFY THE LENGTHS OF ALL PIPE CULVERTS TO BE
REMOVED AND INSTALLED PRIOR TO ORDERING THE PIPE.
TO MINIMIZE AIRBORN DUST DURING CONSTRUCTION, THE CONTRACTOR SHALL
UTILIZE WHATEVER MEANS ARE NECESSARY, INCLUDING, BUT NOT LIMITED TO,
THE APPLICATION OF WATER OR CHEMICALS AS FREQUENTLY AS NEEDED IN
ACCORDANCE WITH THE NCDENR EROSION CONTROL PERMIT.
THE CONTRACTOR SHALL HAVE THE RESPONSIBILITY BEFORE ANY CONSTRUCTION
WORK HAS BEGUN, OF OBTAINING FROM ALL UTILITIES THE EXACT LOCATION OF
ANY UNDERGROUND FACILITIES IN THE AREA OF CONSTRUCTION, WHETHER
INDICATED ON THE PLANS OR NOT. WHENEVER A QUESTION ARISES REGARDING
THE EXISTENCE OR LOCATION OF A BURIED UTILITY, CALL THE TOLL FREE
TELEPHONE NUMBER, 1-800-632-4949, BEFORE STARTING EXCAVATION. ALLOW 48
HOURS FOR OTHER THAN EMERGENCY ASSISTANCE.
ANY FACILITIES DISTURBED BY THE CONTRACTOR SHALL BE RESTORED AT
CONTRACTOR'S EXPENSE. THE CONTRACTOR SHALL COORDINATE WITH THE PROPER
UTILITY FOR THE RELOCATION OF ANY FACILITY DESIGNATED ON THE PLANS OR
DEEMED NECESSARY TO BE RELOCATED IN ORDER TO COMPLETE CONSTRUCTION
OF THE PROJECT.
RESIDENTS SHALL BE NOTIFIED OF IMPENDING SERVICE OUTAGES AND NO
RESIDENCE SHALL BE WITHOUT SERVICE OVERNIGHT DUE TO CONSTRUCTION
ACTIVITIES.
ALL WORK PERFORMED ON STATE RIGHT-OF-WAY SHALL BE IN ACCORDANCE WITH
THE PERMIT ISSUED BY THE NORTH CAROLINA DEPARTMENT OF TRANSPORTATION
ON FILE WITH THE OWNER'S ENGINEER AND PROVIDED TO THE CONTRACTOR. THE
CONTRACTOR SHALL OBTAIN AND PROVIDE AN INDIVIDUAL HIGHWAY PERMIT BOND
BEFORE BEGINNING WORK ON STATE RIGHT-OF-WAY.
ALL ROADS SHALL REMAIN OPEN TO THROUGH TRAFFIC DURING CONSTRUCTION ON
THE PRIVATE SITES.
THE CONTRACTOR SHALL BE REQUIRED TO RELOCATE OR TO REMOVE AND
RE -INSTALL ALL ROAD SIGNS WHICH INTERFERE WITH CONSTRUCTION OPERATIONS
AND TO TEMPORARILY RESET ALL SUCH SIGNS DURING CONSTRUCTION.
ALL WORK INVOLVING SIGNS SHALL BE GOVERNED BY THE FOLLOWING
REQUIREMENTS:
* SIGNS SHALL NOT BE MOVED UNTIL PROGRESS OF WORK DEMANDS.
• EVERY SIGN REMOVED MUST BE RE -ERECTED AT A TEMPORARY LOCATION IN A
WORKMANLIKE MANNER AND BE VISIBLE TO HIGHWAY TRAFFIC.
ALL SUCH SIGNS MUST BE MAINTAINED STRAIGHT AND NEAT FOR THE
DURATION OF THE TEMPORARY SETTING.
THE LATEST EDITION OF THE NATIONAL "MANUAL ON UNIFORM TRAFFIC
CONTROL DEVICES".
THE CONTRACTOR SHALL PROTECT AND CAREFULLY PRESERVE ALL PROPERTY
MARKERS AND MONUMENTS UNTIL THE OWNER, AN AUTHORIZED SURVEYOR OR
AGENT HAS WITNESSED OR OTHERWISE REFERENCED THEIR LOCATION. ALL OTHER
EXISTING ROW MARKERS AND/OR PROPERTY PINS SHALL BE MAINTAINED OR
REPLACED BY THE CONTRACTOR IN ACCORDANCE WITH NORTH CAROLINA LAW.
A CONCRETE WASH OUT AREA SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE
DETAILS AT EACH TURBINE LOCATION.
ALL DEBRIS SHALL BE DISPOSED OF OFF -SITE AT LOCATIONS PROVIDED BY THE
CONTRACTOR.
CONTRACTOR SHALL PROVIDE POSITIVE DRAINAGE FROM ACCESS ROADS,
EXCAVATIONS AND STAGING AREAS AROUND THE TURBINE SITES.
THE INTENT OF THE PLANS IS TO LOCATE THE ACCESS ROADS ALONG THE EDGE
OF FIELDS AND TOP OF BANKS.
CONTRACTOR IS RESPONSIBLE FOR ALL TURNAROUNDS AND CRANE BUILD AREAS.
THEIR LOCATIONS ON THE PLANS ARE APPROVED LOCATIONS SHOULD THE
CONTRACTOR DESIRE TO CONSTRUCT THEM.
DEWATERING OPERATIONS ARE EXPECTED THROUGHOUT CONSTRUCTION AND SHALL
BE PERFORMED IN ACCORDANCE WITH THE DETAILS.
REFER TO ELECTRICAL PLANS FOR ELECTRICAL SYSTEM SPECIFIC DETAILS. ANY
CONFLICTS BETWEEN PLAN SETS SHOULD BE RESOLVED BY THE OWNER.
LEGEND
------------
HB
ACCESS LIMITS
CRANE WALK PATH
IMPROVED ACCESS ROAD
NEW ACCESS ROAD
TEMPORARY IMPROVEMENT
UNDERGROUND COLLECTION
OVERHEAD COLLECTION
PROPOSED CULVERT
PROPOSED SWALE
EXISTING CULVERT
EXISTING DITCH
EXISTING UNPAVED ROAD
PROPERTY LINE
HIGHWAY BOUNDARY
SILT FENCE
LIMIT OF DISTURBANCE
ROCK CHECK DAMS
FLOW DIRECTION
SPOT ELEVATIONS
RIP RAP PROTECTION
WETLAND
PROPOSED PERMANENT
CULVERT LABEL
PROPOSED TEMPORARY
CULVERT LABELS
PROPOSED SWALE LABEL
EXISTING CULVERT LABEL
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PROPOSED OVERHEAD ELECTRIC
COLLECTION SYSTEM
HEIGHT AND POLE SPACING
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PLANS
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LOCATION
SOILTYPE
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TABLE DEPTH (IN)
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SOIL DATA 3
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1. TOPSOIL STOCKPILE, IF NEEDED, TO BE
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LAYDOWN YARD. TOPSOIL STOCKPILE AND
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WITH WHEAT STRAW ONLY AND SEEDED
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A '.I : 2. DISTURBED SOILS AT SLOPES EQUAL TO OR
I' GREATER THAN 3:1 SHALL BE STABILIZED
31 r WITHIN 7 DAYS OF THE LAST DISTURBANCE.
FLATTER SLOPES SHALL BE STABILIZED WITHIN
14 DAYS OF LAST DISTURBANCE.
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22X34 1"=60'
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EROSION CONTROL PLAN
PRO.IFCT OFSCR1PT10N
THE PURPOSE OF THE PROJECT IS TO CONSTRUCT 150 TURBINE WIND FARM WITH
ASSOCIATED GRAVEL ROADS, ABOVE AND BELOW GROUND ELECTRICAL COLLECTIONS
SYSTEMS, SUBSTATIONS, AND OPERATIONS AND MAINTENANCE FACILITY. APPROXIMATELY
1,800 ACRES WILL BE AFFECTED DURING THIS CONSTRUCTION PERIOD. THE OVERALL
PROJECT AREA ENCOMPASSES APPROXIMATELY 30,000 ACRES LOCATED IN PASQUOTANK AND
PERQUIMANS COUNTIES, LOCATED NORTH OF HERTFORD AND WEST OF ELIZABETH CITY, NC.
THE SITE'S TOPOGRAPHY IS LEVEL COASTAL PLAIN WITH SMALL TO LARGE DRAINAGE
CHANNELS THROUGHOUT THE PROJECT AREA. THERE IS NO EVIDENCE OF SIGNIFICANT
EROSION UNDER PRESENT SITE CONDITIONS. SEDIMENT CONTROL MEASURES WILL BE
IMPLEMENTED TO PREVENT DAMAGE TO THE LOCAL DRAINAGE CHANNELS.
LAND USE WITHIN THE PROJECT AREAS AND IN THE VICINITY IS RURAL AGRICULTURE AND
FORESTED AREAS WITH MINOR RESIDENTIAL AND COMMERCIAL AREAS. THE AGRICULTURAL
LANDS INCLUDE DIVERSE PLANTINGS WITH THE MAJORITY BEING CORN AND WHEAT. THE
FORESTED PROPERTIES ARE ACTIVELY TIMBERED. THERE ARE EXISTING GRAVEL AND SAND
SURFACED PUBLIC AND PRIVATE ROADS THROUGHOUT THE PROJECT AREA.
SOILS
THE SOIL IN THE PROJECT AREA IS SANDY LOAM WITH SEASONAL HIGH GROUNDWATER
WITHIN 3 FEET OF SURFACE
(;FNFRAI NOTES FOR CONTRACTOR
THE WORK SHALL CONSIST OF FURNISHING LABOR AND MATERIAL, EQUIPMENT AND
PERFORMING ALL OPERATIONS NECESSARY FOR A COMPLETE INSTALLATION OF ALL WORK
AS SPECIFIED HEREIN AND AS SHOWN ON THE DRAWINGS.
WORK SHALL CONSIST OF INSTALLATION OF TEMPORARY EROSION CONTROL MEASURES;
CLEARING; GRUBBING; STRIPPING TOPSOIL; ROADWAY AND GENERAL GRADING; CONTROLLED
FILL; UTILITY INSTALLATION; PREPARATION OF SUBGRADE; FINE GRADING; CONCRETE
FOUNDATIONS, TOWER INSTALLATIONS; PAVING AND PERMANENT SEEDING.
ALL DISTURBED AREAS SHALL BE LEFT IN A STABILIZED CONDITION UPON COMPLETION OF
THIS CONTRACT.
THE CONTRACTOR IS EXPECTED TO EXAMINE THE SITE TO FAMILIARIZE HIMSELF WITH SITE
CONDITIONS. THE CONTRACTOR SHALL CAREFULLY READ ALL THE SPECIFICATIONS AND
EXAMINE THE DRAWINGS AND DETAILS IN ORDER TO THOROUGHLY FAMILIARIZE HIMSELF
WITH THE WORK TO BE DONE. ANY WORK SHOWN ON THE DRAWINGS OR INCLUDED IN THE
SPECIFICATIONS, OR REASONABLY IMPLIED BY EITHER, SHALL BE PERFORMED THE SAME AS
IF CALLED FOR BY BOTH.
FROSTON CONTROI SPECTFICATIONS
GENERAL: PROVIDE THE WORK FOR EROSION AND SEDIMENT CONTROL AS INDICATED AND
SPECIFIED AS FOLLOWS:
SEDIMENT BASINS; DIVERSION SWALES; CONSTRUCTION ENTRANCE; DRAINAGE STRUCTURES;
OUTLET PROTECTION; EXCAVATION DEWATERING, TEMPORARY AND PERMANENT SEEDING; AND
SILT FENCE.
CONTRACTOR'S RESPONSIBILITY: THE CONTRACTOR SHALL FURNISH THE OWNER A SYSTEM
OF TEMPORARY CONTROLS TO MINIMIZE SOIL SEDIMENT EROSION DURING THE
CONSTRUCTION PERIOD CAUSED BY STORM WATER RUNOFF. WORK SHALL BE PERFORMED AS
CALLED FOR ON THE DRAWINGS AND AS SITE CONDITIONS WARRANT.
EROSION AND SEDIMENT CONTROL: THE CONTRACTOR SHALL PROVIDE EROSION AND
SEDIMENT CONTROL DURING THE PERIOD OF CONSTRUCTION OF THIS PROJECT IN
ACCORDANCE WITH THE APPROVED EROSION AND SEDIMENT CONTROL PLANS AND THE NC
DIVISION OF WATER QUALITY CONSTRUCTION GENERAL PERMIT NCGO1. THE CONTRACTOR
SHALL PROTECT AND MAINTAIN THE TEMPORARY EROSION AND SEDIMENT CONTROL
STRUCTURES. MAINTENANCE OF THESE FACILITIES SHALL INCLUDE, BUT NOT BE LIMITED
TO, REMOVING SEDIMENT BUILD-UP, REGRADING AND FILLING OF WASHED OUT AREAS,
ADDING EROSION CONTROL BLANKETS, ADDING SILT FENCES AND RIPRAP, AND RESEEDING
AND MULCHING OF THE SWALES DURING THE CONSTRUCTION PERIOD IF DEEMED NECESSARY
BY THE OWNER, OWNER'S ENGINEER, OR THE LAND QUALITY SECTION OF N.C.D.E.N.R.
EROSION CONTROI COMPONENTS
ACCESS ROAD CONSTRUCTION ON EXISTING PUBLIC AND PRIVATE ROADS: EXISTING ROAD
IMPROVEMENTS WILL INCLUDE REMOVING SOFT SPOTS AS NEEDED, ADDING SOIL STABILIZER
AND/OR AGGREGATE AS RECOMMENDED BY THE GEOTECHNICAL ENGINEER. SILT FENCE
SHALL BE PLACED BETWEEN ROADS AND WATER COURSES WHERE RUNOFF IS DIRECTED
TOWARD A CHANNEL. RUNOFF WILL BE ALLOWED TO DIRECTLY DISCHARGE INTO FARMED
FIELDS.
ACCESS ROAD CONSTRUCTION ON EXISTING FIELDS: NEW ROADS WILL FOLLOW ALONG THE
BANKS OF EXISTING FIELD DRAINAGE CHANNELS. THEIR CONSTRUCTION WILL INCLUDE
ADDING SOIL STABILIZER AND/OR AGGREGATE AS RECOMMENDED BY THE GEOTECHNICAL
ENGINEER. SILT FENCE TO BE PLACED AT THE TOP OF BANK FOR THE LENGTH OF THE
NEW ROAD TO PROVIDE PROTECTION TO ADJACENT WATER COURSE.
PERMANENT AND TEMPORARY CULVERT INSTALLATIONS AND REMOVALS: DRAINAGE CHANNELS
TO BE TEMPORARILY BLOCKED ON EACH SIDE OF THE CULVERT LOCATIONS AND
DEWATERED. AFTER CULVERT AND FILL IS INSTALLED OR REMOVED, TEMPORARY DAMS
WILL BE REMOVED. TEMPORARY ROCK CHECK DAMS SHALL BE PLACED IMMEDIATELY
DOWNSTREAM OF THE DISTURBANCE.
TURBINE SITES: CONSTRUCTION WILL CONSIST OF SILT FENCE INSTALLATION, FOUNDATION
EXCAVATION AND CONSTRUCTION, TEMPORARY SEEDING AND MULCHING OF SOIL STOCKPILES.
FOUNDATION BACKFILLING, AND WORK PLATFORM AND CRANE PAD CONSTRUCTION. AFTER
TURBINE ERECTION, THE WORK PLATFORM AND CRANE PAD WILL BE REMOVED AND
DISTURBED AREAS STABILIZED PER THE VEGETATION PLAN.
CRANE WALK LOCATIONS: ERECTION CRANES WILL TRAVEL BETWEEN TURBINE LOCATIONS
FOLLOWING THE DESIGNATED PATHS SHOWN ON THE PLANS. THESE PATHS WILL RECEIVE
MINOR GRADING AT CULVERT AND ROAD CROSSINGS, SOIL STABILIZATION, OR COMPACTION
AS NEEDED TO PROVIDE A STABLE ACCESS ROUTE WITH A MAXIMUM 17 CROSS SLOPE. IN
MOST CASES, EXISTING VEGETATION WILL NOT BE REMOVED FROM WITHIN OR ALONG THE
CRANE WALK LOCATIONS. EROSION CONTROL MEASURES TO BE PROVIDED AT WATERCOURSE
CROSSINGS, AS SHOWN IN THE DETAILS, WITH DISTURBED AREAS RECEIVING MULCH AND
SEED IN ACCORDANCE WITH THE VEGETATION PLAN.
UNDERGROUND ELECTRICAL COLLECTION SYSTEM: INSTALLATION WILL CONSIST OF PLACING
ELECTRICAL LINES USING STANDARD TRENCHING OR TRENCHLESS METHODS. EXCAVATED
SOILS WILL NOT BE LEFT IN STOCKPILES FOR MORE THAN 24 HOURS. BACKFILLED
TRENCHES SHALL BE SEEDED AND MULCHED ACCORDING TO SPECIFICATIONS IN THE
VEGETATION PLAN.
THE TURBINE, INTERCONNECT, SUBSTATION, OPERATION AND MAINTENANCE FACILITY,
LAYDOWN SITES. AND ANY OTHER TEMPORARY AND PERMANENT IMPROVEMENTS THAT
REQUIRE SOIL DISTURBANCE AND/OR TOPSOIL STOCKPILES WILL HAVE SILT FENCE
INSTALLED ALONG THE DOWNHILL SIDE OF THOSE DISTURBANCES. ALL DISTURBED AREAS
DURING CONSTRUCTION AND AFTER REMOVAL OF TEMPORARY IMPROVEMENTS AFTER
CONSTRUCTION SHALL BE MULCHED AND SEEDED IN ACCORDANCE WITH THE VEGETATION
PLAN.
THE LAYDOWN AREA WILL ALSO INCLUDE THE INSTALLATION OF TWO SEDIMENT BASINS
THAT WILL BE REMOVED AFTER THE REMOVAL OF THE LAYDOWN AREA. THE
INTERCONNECT, SUBSTATION, AND 0&M SITES WILL DISCHARGE TO PERMANENT BMPS TO BE
INSTALLED ONCE SITES ARE STABILIZED.
FROSION CONTROI SEQUENCE
THE FOLLOWING SEQUENCE OF CONSTRUCTION SHALL BE STAGED AS REQUIRED TO PROVIDE
ACCEPTABLE EROSION AND SEDIMENT CONTROL:
1. CONTRACTOR AND OWNER SHALL ARRANGE A PRECONSTRUCTION MEETING AT LEAST ONE
WEEK PRIOR TO ANY LAND DISTURBING ACTIVITY. ATTENDEES TO INCLUDE APPROPRIATE
NCDENR, PASQUOTANK COUNTY, AND PERQUIMANS COUNTY REPRESENTATIVES.
2. CONSTRUCT TEMPORARY GRAVEL CONSTRUCTION ENTRANCE/EXIT AT ACCESS POINTS TO
PUBLIC ROADS. ANY SEDIMENT ACCUMULATION ON PUBLIC ROADS AS A RESULT OF THIS
PROJECT SHALL BE IMMEDIATELY CLEANED OFF BY THE CONTRACTOR.
3. CONSTRUCT SEDIMENT BASINS AT LAYDOWN YARD BEFORE INITIAL CONSTRUCTION.
4. INSTALL TEMPORARY SILT FENCE AT LOCATIONS WHERE FIELD CONDITIONS PROHIBIT
PROPER CONSTRUCTION OF TEMPORARY DIVERSION SWALES AND AS INDICATED ON THE
PLANS.
5. CLEAR VEGETATION AND GRUB STUMPS FROM WOODED AREAS TO BE DISTURBED.
6. STRIP TOPSOIL AND STOCKPILE ON SITE FOR REDISTRIBUTION UPON COMPLETION OF
GRADING.
7. TEMPORARILY MULCH AND SEED TOPSOIL STOCKPILES PER VEGETATION PLAN
SURROUNDING THEM WITH SILT FENCE.
8. INSTALL STORM DRAINAGE.
9. FINE GRADE AND STABILIZE ROADS AND SITES TO SUBGRADE ELEVATION PER
GEOTECHNICAL ENGINEER RECOMMENDATIONS.
10. PLACE AGGREGATE BASE ACCORDING TO PLANS AND SPECIFICATIONS.
11. THE CONTRACTOR SHALL BE RESPONSIBLE FOR MAINTAINING ALL SEDIMENT AND
EROSION CONTROL MEASURES THROUGHOUT THE DURATION OF THE CONSTRUCTION PROJECT
ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE INSPECTED WEEKLY AND AFTER
RAINFALL EVENTS. NEEDED REPAIRS WILL BE MADE IMMEDIATELY.
12. INSTALL ALL UNDERGROUND UTILITIES.
13. CONTRACTOR SHALL CLEAN ALL STORM DRAINAGE STRUCTURES, FLUMES, PIPES,
CULVERTS, ETC. PRIOR TO FINAL PAYMENT.
14. AT THE END OF THE PROJECT CONSTRUCTION AND AFTER THE PERMANENT GROUND
COVER IS ESTABLISHED, THE CONTRACTOR SHALL REMOVE ALL TEMPORARY EROSION
CONTROL STRUCTURES AND SEED AND MULCH ALL REMAINING DISTURBED AREAS.
15. ESTIMATED TIME OF CONSTRUCTION FROM INITIAL DISTURBANCE TO FINAL
STABILIZATION--36 MONTHS.
MAINTENANCE PI AN
ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CHECKED FOR STABILITY AND
OPERATION FOLLOWING EVERY 0.5" RAINFALL EVENT WITHIN 24 HOURS BUT IN NO CASE
LESS THAN ONCE EVERY WEEK. ANY NEEDED REPAIRS WILL BE MADE IMMEDIATELY TO
MAINTAIN ALL PRACTICES AS DESIGNED.
THE SEDIMENT BASINS WILL BE CLEANED OUT WHEN STORAGE CAPACITY HAS BEEN
APPROXIMATELY 50% FILLED.
SEDIMENT WILL BE REMOVED FROM BEHIND THE SEDIMENT FENCE WHEN IT BECOMES ABOUT
0.5 FT DEEP AT THE FENCE. THE SEDIMENT FENCE WILL BE REPAIRED AS NECESSARY TO
MAINTAIN A BARRIER.
ALL SEEDED AREAS WILL BE FERTILIZED, RESEEDED AS NECESSARY, AND MULCHED
ACCORDING TO SPECIFICATIONS IN THE VEGETATION PLAN.
VFC.FTATION PI AN
STABILIZATION OF DISTURBED AREAS SHALL OCCUR WITHIN 7 DAYS OF LAST DISTURBANCE
ON PERIMETER AREAS AND SLOPES GREATER THAN 3:1.
STABILIZATION OF DISTURBED AREAS SHALL OCCUR WITHIN 14 DAYS OF LAST
DISTURBANCE ON ALL OTHER AREAS AND SLOPES LESS THAN OR EQUAL TO 3:1.
STABILIZATION MATERIALS TO CONSIST OF WHEAT STRAW MULCH AND FESCUE SEED ONLY.
CONTRACTOR SHALL MINIMIZE THE AMOUNT OF CROP DAMAGE TO THE GREATEST EXTENT
POSSIBLE.
OWNER, LANDOWNER AND CONTRACTOR SHALL DEVELOP A SCHEDULE OF ALLOWING FARMING
OPERATIONS IN CONTRACTOR WORK AND OTHER DISTURBED AREAS FOR EACH AFFECTED
FIELD.
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PROVIDE TURNING RADIUS SUFFICIENT TO ACCOMMODATE LARGE
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TRUCKS.
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LOCATE ENTRANCES TO PROVIDE FOR UTILIZATION
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MUST BE MAINTAINED IN A CONDITION WHICH WILL PREVENT
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PERIODIC TOPDRESSING WITH STONE WILL BE NECESSARY.
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4.
ANY MATERIAL TRACKED ONTO THE ROADWAY MUST BE
CLEANED UP IMMEDIATELY.
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5.
LOCATE GRAVEL CONSTRUCTION ENTRANCE AT ALL POINTS OF
/
INGRESS AND EGRESS UNTIL SITE IS STABILIZED. PROVIDE
/
FREQUENT CHECKS OF THE DEVICE AND TIMELY MAINTENANCE.
6.
NUMBER AND LOCATION OF CONSTRUCTION ENTRANCES TO
W
BE DETERMINED BY THE ENGINEER.
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7.
USE CLASS 'A' STONE OR OTHER COARSE AGGREGATE APPROVED
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INSTALL CONSTRUCTION ENTRANCES IN A WAY TO PREVENT VEHICLES
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FROM BYPASSING CONSTRUCTION ENTRANCE LEAVING PROJECT SITE.
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NOTE: PLACE FILTRATION GEOTEXTILE BENEATH STONE
TOP AND BOTTOM STRAND -
SHALL BE 10 GAUGE MIN.
WIRE
NOTES
8' MAX. WITH WIRE
(6' MAX. WITHOUT WIRE
MIDDLE AND VERTICAL WIRES
SHALL BE 121/2 GAUGE MIN.
A
24" MAX.
(18" MIN.)
FILTRATION GEOTEXTILE
USE WIRE A MINIMUM OF 32"
IN WIDTH AND WITH A MINIMUM
OF 6 LINE WIRES WITH 12" STAY
SPACING.
USE FILTRATION GEOTEXTILE
A MINIMUM OF 36" IN WIDTH AND
FASTEN ADEQUATELY TO THE WIRE
AS DIRECTED.
PROVIDE 5'-0" STEEL POST OF
THE SELF -FASTENER ANGLE STEEL
TYPE.
FOR MECHANICAL SLICING METHOD
INSTALLATION, GEOTEXTILE SHALL
BE A MAXIMUM OF 18" ABOVE GROUND
SURFACE.
FILTRATION GEOTEXTILE
COMPACTED FILL
4„ STEEL POST - 2'-0" DEPTH
EXTENSION OF GEOTEXTILE AND
WIRE INTO TRENCH
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WELL -VEGETATED AREA
WELL -VEGETATED AREA
PLAN VIEW CLAMPS
NON -WOVEN GEOTEXTILE
FILTER BAG
r�,-r� I
WELL VEGETATED AREA
PUMP
ELEVATION VIEW
1. FILTER BAGS SHALL BE MADE FROM NON -WOVEN GEOTEXTILE MATERIAL SEWN WITH HIGH
STRENGTH, DOUBLE STITCHED "J" TYPE SEAMS. THEY SHALL BE CAPABLE OF TRAPPING PARTICLES
LARGER THAN 150 MICRONS.
2. A SUITABLE MEANS OF ACCESSING THE BAG WITH MACHINERY REQUIRED FOR DISPOSAL PURPOSES
MUST BE PROVIDED. FILTER BAGS SHALL BE REPLACED WHEN THEY BECOME 112 FULL. SPARE
BAGS SHALL BE KEPT AVAILABLE FOR REPLACEMENT OF THOSE THAT HAVE FAILED OR ARE FILLED.
3. BAGS SHALL BE LOCATED IN WELL -VEGETATED (GRASSY) AREA AND DISCHARGE ONTO STABLE,
EROSION RESISTANT AREAS. WHERE THIS IS NOT POSSIBLE, A GEOTEXTILE FLOW PATH SHALL BE
PROVIDED. BAGS SHALL NOT BE PLACED ON SLOPES GREATER THAN 5%.
4. THE PUMP DISCHARGE HOSE SHALL BE INSERTED INTO THE BAGS IN THE MANNER SPECIFIED BY
THE MANUFACTURER AND SECURELY CLAMPED.
5. THE PUMPING RATE SHALL BE NO GREATER THAN 750 GPM OR 112 THE MAXIMUM SPECIFIED BY
THE MANUFACTURER, WHICHEVER IS LESS. PUMP INTAKES SHOULD BE FLOATING AND SCREENED.
6. ALL FILTER BAGS AND TRAPPED SEDIMENT SHALL BE REMOVED TO A SUITABLE WASTE AREA WHEN
ACCUMULATED SEDIMENTS REACH 112 TOTAL BAG CAPACITY.
DEWATERING FILTER BAG
OUTLET OPTION
NOT TO SCALE
EXISTING
GRADE
SELECT GRANULAR
FILL
LAYDOWN YARD FILL AGGREGATE
PER GEOTEXTILE ENGINEER'S RECOMMENDATIONS
GEOTEXTILE
FILTER FABRIC
6" PERFORATED CULVERT
ALONG SWALE BOTTOM
DRAIN TILE DETAIL
NOT TO SCALE
NOTE:
SEE RIPRAP
STANDARDS AND
SPECIFICATIONS
MAXIMUM
TAILWATER
CONDITIONS
A�
LIGHT
STONE FILL B `I
A�I B_ _1
L'
PLAN VIEW
ALUMINUM OR
GALVANIZED METAL
END SECTION
PER PLAN
GRADED AGGREGATE —
FILTER OR WOVEN
GEOTEXTILE
PROFILE VIEW
w = d + 0.4 L '
6
GRADED AGGREGATE
FILTER OR FILTER CLOTH
SECTION A -A
(AT END OF CULVERT)
DISCHARGE TO
SEMI -CONFINED SECTION
(MAXIMUM TAILWATER
CONDITION)
ID
L (FT)
b (FT)
DSl / ES
8
4.45
CULV. #la
8
4.45
CULV. °lb
8
4.45
CULV. °3
24
10.85
1-FT'
L w = d + 0.4 L '
DEPTH DICTATED BY
CHANNEL SECTION AT
END OF APRON
GRADED AGGREGATE
FILTER OR FILTER CLOTH
SECTION B-B
(AT END OF APRON)
NOTES:
1. SEE PLANS FOR CULVERT SIZES AND LOCATIONS.
2. ANY FILL REQUIRED IN THE SUBGRADE SHALL BE COMPACTED
TO A DENSITY OF APPROXIMATELY THAT OF THE
SURROUNDING UNDISTURBED MATERIAL.
3. FILTER CLOTH SHALL BE PROTECTED FROM PUNCHING,
CUTTING, OR TEARING. ANY DAMAGE OTHER THAN THE
OCCASIONAL SMALL HOLE SHALL BE REPAIRED BY PLACING
ANOTHER PIECE OF CLOTH OVER THE DAMAGED PART OR BY
COMPLETELY REPLACING THE CLOTH. ALL OVERLAPS, WHETHER
FOR REPAIRS OR JOINING TWO PIECES OF CLOTH SHALL BE A
MINIMUM OF 1-FT.
MAINTENANCE NOTES:
1. INSPECT STRUCTURE AFTER HIGH FLOWS FOR EVIDENCE OF
SCOUR BENEATH RIPRAP OR FOR DISLODGED STONES. REPAIRS
SHOULD BE MADE IMMEDIATELY.
ROCK OUTLET PROTECTION OPTION
NOT TO SCALE
FILTER CLOTH
L= THE DISTANCE SUCH THAT POINTS
A AND B ARE OF EQUAL ELEVATION
CHECK DAM SPACING
� 9" MIN. 1.5' MIN.
PLAN VIEW
4' TO 6' _
CROSS—SECTION VIEW
STONE CHECK DAM
NOT TO SCALE
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TEMPORARY CONDUIT
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DITCH AS NECE AR
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PLAN VIEW
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TEMPORARY 12" CONDUIT e
FOR DRY TRENCHING OF
DITCH AS NECESSARY
SAND BAGS TO CHANNEL
DITCH FLOW AS NECESSARY
SILT FENCE
PER DETAIL
11 1 1 5 1 1'
SAND
SAND AGS TO CHANNEL
DIT FLOW AS NECESSARY
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PROPOSED ELECTRICAL
COLLECTION CONDUIT
SECTION VIEW
NOTES:
1. TEMPORARY SAND AGS AND CONDUIT ARE TO BE INSTALLED IOR TO ANY CONSTRUCTION
WITHIN THE LIM S OF THE DITCH. IN THE EVENT THAT THE TCH IS DRY DURING
CONSTRUCTION SAND BAGS AND CONDUIT ARE NOT NECESSARY.
2. PUMP WATE OUT OF WORK AREA USING DEWATERING FILTER BAG, PE DETAIL ON DET-8.
3. EXCAVA D TRENCH MATERIAL SHALL BE STOCKPILED ADJACENT TO THE RENCH.
4. SILT ENCE SHALL BE INSTALLED BETWEEN THE STOCKPILED MATERIAL AN THE TOP OF
B Of THE DITCH.
5. LL TEMPORARY AND PERMANENT STABILIZATION MEASURES SHALL BE APPLIED
j IN ACCORDANCE WITH THE NCDENR EROSION CONTROL PERMIT.
$. REFER TO ELECTRICAL DESIGN FOR CONDUIT DEPTH AND TRENCH DETAILS.
UTILITY LINE OPEN CUT
Phi TI�ll f%nr%f C*lKlr
PLAN VIEW
12"� BERM AROUND PERIMETER
2'-0" MIN.
------------
COMPACTED EMBANKMENT
MATERIAL, TYP. 8'x8' MIN.
OR AS REQUIRED TO
CONTAIN WASTE CONCRETE
SECTION A
SEE CONSTRUCTION ENTRANCE
DETAIL FOR DESIGN OF PAD
GROUND SURFACE
��-12" MIN.
SAND BAGS
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PROPOSED PERMANENT
AND/OR TEMPORARY CULVERT
---------------
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BACKFILL CULVERT WITH
EXCAVATED MATERIAL
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SAND BAGS TO CHANNEL
DITCH FLOW AS NECESSARY
BYPASS PUMP
(AS NEEDED)
LIMITS OF FILL
SLOPES TO BE STABXLIZED
WITH RIP -RAP OR E,,ROSION
CONTROL BLANKEVS (PER DETAIL)
—TOP OF B
SUMP PUMP
FILTER BAG
SED ROAD GRADE
-------------
_,;,,—SELECT FILL
1
`tr CULVERT BURY DEPTH
_i SEE NOTE 5
i I
ECTION VIEW
NOTES:
1. TEMPORARY STAND BAGS AND BYPASS PUMP ARE T& BE INSTALLED
PRIOR TO ,R'fVY CONSTRUCTION WITHIN THE LIMITS bF THE DITCH.
IN THE EXENT THAT THE DITCH IS DRY DURING C01$TRUCTION,
SAND B S AND BYPASS PUMP ARE NOT NECESSARY.
2. PUMP �IATER OUT OF WORK AREA USING DEWATERING FICNIER BAG,
PER DETAIL ON DET-8. `t
3. /CAVATED TRENCH MATERIAL SHALL BE STOCKPILED ADJAC° NT TO
E TRENCH.
/ °.
4% ALL TEMPORARY AND PERMANENT STABILIZATION MEASURES SHA)~L
BE APPLIED IN ACCORDANCE WITH THE NCDENR EROSION CONTRON,
PERMIT
5. REFER TO DT 1-3 FOR CULVERT BURY DEPTH.
PERMANENT AND TEMPORARY
CULVERT INSTALLATION DETAIL
NTS
CONCRETE WASHOUT AREA INSTALLATION NOTES:
1. CONCRETE WASHOUT AREAS ARE TO BE INSTALLED AT EACH WTG PAD
LOCATION, 0&M BUILDING SITE, SUBSTATION SITE, LAYDOWN AREA AND
WHEREVER ELSE NEEDED.
2. THE CONCRETE WASHOUT AREA SHALL BE INSTALLED PRIOR TO ANY
CONCRETE PLACEMENT ON THE SITE.
3. VEHICLE TRACKING CONTROL IS REQUIRED AT THE ACCESS POINT.
4. SIGNS SHALL BE PLACED AT THE CONSTRUCTION ENTRANCE, AT THE
WASHOUT AREA, AND ELSEWHERE AS NECESSARY TO CLEARLY INDICATE
THE LOCATION OF THE CONRETE WASHOUT AREA TO OPERATORS OF
CONCRETE TRUCKS AND PUMP RIGS.
5. EXCAVATED MATERIAL SHALL BE UTILIZED IN PERIMETER BERM
CONSTRUCTION.
CONCRETE WASHOUT AREA MAINTENANCE NOTES:
1. THE CONCRETE WASHOUT AREA SHALL BE REPAIRED AND ENLARGED OR
CLEANED OUT AS NECESSARY TO MAINTAIN CAPACITY FOR WASTED
CONCRETE.
2. AT THE END OF CONSTRUCTION, ALL CONCRETE SHALL BE REMOVED
FROM THE SITE AND DISPOSED OF AT AN APPROVED WASTE SITE.
3. WHEN THE CONCRETE WASHOUT AREA IS REMOVED, COVER THE
DISTURBED AREA WITH TOPSOIL, DRILL SEED AND CRIMP MULCH OR
OTHERWISE STABILIZE IN A MANNER APPROVED BY THE LOCAL
JURISDICTION.
4. REGULARLY SCHEDULED INSPECTIONS TO BE COMPLETED.
3:1 OR FLATTER
SIDE SLOPES
CONCRETE WASHOUT AREA
NTS
SILT FENCE
PER DETAIL
IL PILE
---- TRENCH BORE' ,OR
RECEIVING PIT
SILT FENCE
PER DETAIL
10,
MIN
10,
MIN.
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MI . RECEIVING PIT
-----------
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CO AROUND THE BORE PIT IF LEFT
CD OPEN OUTSIDE THE
CL t CONSTRUCTION HOURS.
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PLAN VIEW
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PROPOSED ELECTRICAL
COLLECTION CONDUIT %` /A2" MIN. �: DIRECTIONAL DRILL
CONDUIT UNDER STREAM
SECTION VIEW
NOTES: ;
1. EXCAVATED T4ENCH AND BORE/RECEIVING PIT MATERIAL SHAD, BE STOCKPILED
ADJACENT/TO THE TRENCH, NO CLOSER THAN 10 FT FROM THE=,TOP OF BANK
OF THE VETCH.
2. SILT FENCE SHALL BE INSTALLED BETWEEN THE STOCKPILED MATE RJAL AND
BOR VRECEIVING PIT AND THE TOP OF BANK ON BOTH SIDES OF THE' -;STREAM.
3. IMMtDIATELY AFTER CONSTRUCTION IS COMPLETE, PERMANENT STABILIZATION
MtASURES SHALL BE APPLIED IN ACCORDANCE WITH THE NCDENR REQUIREMENTS.
4. THERE SHALL BE NO DISTURBANCE TO THE STREAM DURING CONSTRUCTION. 4
5. REFER TO ELECTRICAL DESIGN FOR CONDUIT DEPTH AND TRENCH DETAILS.
UTILITY LINE BORE
STREAM CROSSING
NTS
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