NCC222628_Site Plan or Location Map_20220809

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Temporary Diversion Ditch
TDD - Q10
Side
Bottom
Diversion
Drainage
Q10
Length
Velocity
Liner
Slope (%}
Slope
Width
Depth (ft)
Provided Liner Type
Ditch
Area (ac)
(cfs)
(ft)
(fps)
Required?
(Z:1)
(ft)
TDD#1
0.21
0.30
142.0
4.1%
3
1.0
0-5
4.11
LINER REQ'D
Straw with Net
PDD#1
1 0.26
0.24
180.0
2.4%
3
1.0
0.5
3.15
LINER REQ'D
Straw with Net
EROSION & SEDIMENT CONTROL NOTES
l . THE INDICATED STAGING AND PARKING AREA IS INTENDED FOR VEHICLES AND NON -ERODIBLE
MATERIALS ONLY. NO SOIL, SAND OR OTHER ERODIBLE, FINE GRAINED MATERIAL SHALL BE STORED
OUTSIDE OF THE LIMITS OF THE SITE PROTECTED BY EROSION & SEDIMENT CONTROL DEVICES OR
MEASURES.
2. SOIL AND OTHER MATERIALS SHALL BE ONLY TEMPORARILY STOCKPILES WITHIN THE CONSTRUCTION
LIMITS AND PROTECTED BY EROSION AND SEDIMENT CONTROL DEVICES AND MEASURES. STOCKPILES
SHALL BE STABILIZED AS NECESSARY, SEE SLOPE & SURFACE STABILIZATION NOTES ON SHEET CE500.
3. TEMPORARY CONSTRUCTION FENCE SHALL BE USED AS SHOWN ON THE PLANS TO INDICATE THE LIMITS
OF DISTURBANCE AND/OR TO SECURE THE CONSTRUCTION SITE AS NECESSARY.
4. EROSION AND SEDIMENT CONTROL MEASURES SHALL BE MAINTAINED CONTINUOUSLY AND MAY BE
RELOCATED AS NECESSARY TO COMPLETE CONSTRUCTION ACTIVITIES. SEEDED AREAS SHALL BE
CHECKED REGULARLY AND SHALL BE WATERED, FERTILIZED, RESEEDED, AND MULCHED AS NECESSARY
TO OBTAIN A DENSE STAND OF GRASS.
5. IN ADDITION TO THE MEASURES SHOWN ON THE PLANS, THE CONTRACTOR SHALL USE INTERIM SILT
FENCES, DIVERSION DITCHES, BERMS, OR OTHER METHODS AS REQUIRED TO DIRECT DRAINAGE AS
SHOWN ON THE PLANS AND TO PREVENT SILT AND CONSTRUCTION DEBRIS FROM FLOWING ONTO
ADJACENT PROPERTIES. THE CONTRACTOR SHALL COMPLY WITH ALL APPLICABLE STAND AND LOCAL
EROSION, CONSERVATION, AND SILTATION ORDINANCES. THE CONTRACTOR SHALL REMOVE ALL
TEMPORARY EROSION AND SEDIMENT CONTROL DEVICES ONLY AFTER FINAL INSPECTION AND
APPROVAL FROM A REPRESENTATIVE OF THE PRESIDING JURISDICTION.
6. ALL EROSION & SEDIMENT CONTROL FENCING, FINAL INLET PROTECTIONS, PIPE INLET/OUTLET
PROTECTIONS SHALL REMAIN IN PLACE UNTIL AFTER FINAL STORMWATER/SITF STABILIZATION INSPECTION
AND REMOVAL IS APPROVED.
7. CONTRACTOR SHALL PERFORM SELF -INSPECTIONS AFTER EACH PHASE OF THE PROJECT UNTIL AFTER
FINAL STORMWATER/SITE STABILIZATION INSPECTION AND THE SITE IS APPROVED AS STABILIZED.
8. REFER TO DETAIL SHEETS CE500-CE501 FOR CONSTRUCTION SEQUENCE AND DETAILS.
9. REFER TO SHEET CE130 FOR SEEDING SCHEDULE.
7
Temporary Erosion and Sediment Control
Structure Summary
Surface
Side
Volume
Weir
Depth
Spillway
Disturbed
Q10
Area
Width
Length
Slope
Depth
Skimmer
Orfice Size
Dewatering
Facility
Required
Width
of Flow
Capacity
Area (ac)
(cfs)
Required
(ft)
(ft)
Ratio
(ft)
Size (in)
(in)
Time (Days)
(ft3)
(ft)
(ft)
(cfs)
(fe)
(Z:1)
TSSB#1
2.78
3.93 1
4999
1711
1 35
75
2
3
5
1
15.0
1.5
1.5
2.7
EROSION CONTROL SPECIFICATIONS
EROSION CONTROL DEVICES TO BE INSTALLED AS PER THE SPECIFICATIONS SHOWN ON THE
CONSTRUCTION DRAWINGS, WAKE COUNTY SPECIFICATIONS AND AS PER NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL AND NATURAL RESOURCES - EROSION AND SEDIMENT CONTROL
PLANNING AND DESIGN MANUAL, LATEST EDITION. WHERE CONFLICTS IN SPECIFICATIONS EXIST BETWEEN
THE MANUAL AND THE CONSTRUCTION DRAWINGS, THE MORE STRINGENT SPECIFICATION SHALL APPLY.
r
g 141 LF 15" RCP @ 2.17% SLOPE
UPSTREAM INV. ELEV. 306.50'
DOWNSTREAM INV. ELEV. 303.44'
SILT FENCE
OUTLET, TYP.
RIP RAP DISSIPATOR 1
SEE CE510 FOR DISSIPATOR
CALCS
STOCKPILING NOTES
BASIN DESIGN CRITERIA
1.
A 25-FOOT TEMPORARY MAINTENANCE AND ACCESS EASEMENT SHALL BE ESTABLISHED AROUND ALL PROPOSED
FEDERAL GUIDELINES REQUIRE ALL SEDIMENT BASINS OVER 1 ACRE TO DRAIN FROM THE TOP OF THE WATER
STOCKPILES.
COLUMN, THE FOLLOWING ARE NCDFQ EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN
2.
STOCKPILE FOOTPRINTS SHALL BE SETBACK A MINIMUM OF 25' FROM ADJACENT PROPERTY LINES.
MANUAL MINIMUM REQUIREMENTS FOR SIZING THE SEDIMENT BASIN AND THE ASSOCIATED WEIR;
3.
STOCKPILE HEIGHT SHALL NOT EXCEED 35 FEET.
1. SIZING THE STORAGE AREA
4.
STOCKPILE SLOPES SHALL BE 2:1 OR FLATTER.
SURFACE AREA REQUIREMENTS MUST BE MET FOR ALL SEDIMENT BASINS.
435 X Q1W = SURFACE AREA REQUIRED FOR ALL TYPES OF SEDIMENT BASINS.
5.
APPROVED SCMs SHALL BE SHOWN ON A PLAN TO CONTROL ANY POTENTIAL SEDIMENT LOSS FROM A STOCKPILE.
*USE MINIMUM C=0.5 FOR AREAS DRAINING TO BASIN.
6.
STOCKPILING MATERIALS ADJACENT TO A DITCH, DRAINAGE WAY, WATERCOURSE, WETLAND, STREAM BUFFER, OR OTHER
SEDIMENT BASIN VOLUME IS DETERMINED BY 1,800 CU/FT PER DRAINAGE ACRE,
BODY OF WATER SHALL BE AVOIDED UNLESS AN ALTERNATIVE LOCATION IS DEMONSTRATED TO BE UNAVAILABLE.
WAKE COUNTY CUSTOM BASIN VOLUME I DETERMINED Y
A COU CU5 O SIS DE ED B 3,600 CU/FT PER DRAINAGE ACRE.
THE MAXIMUM DEPTH ALLOWED IS 4 FEET. (FROM BOTTOM OF BASIN TO WEIR)
7.
ANY CONCENTRATED FLOW LIKELY TO AFFECT THE STOCKPILE SHALL BE DIVERTED TO AN APPROVED SCM.
THE MINIMUM DEPTH REQUIRED IS 2 FEET. (FROM BOTTOM OF BASIN TO WEIR)
8.
OFF -SITE SPOIL OR BORROW AREAS MUST BE IN COMPLIANCE WITH WAKE COUNTY LIDO AND STATE REGULATIONS, ALL
THE FLOOR OF ALL BASINS SHOULD BE ROUGHLY LEVEL.
SPOIL AREAS OVER AN ACRE ARE REQUIRED TO HAVE AN APPROVED SEDIMENT CONTROL PLAN.
BASIN SHOULD DEWATER 1N 3 TO 5 DAYS.
DEVELOPER/CONTRACTOR SHALL NOTIFY WAKE COUNTY OF ANY OFFSITE DISPOSAL OF SOIL, PRIOR TO DISPOSAL, FILL OF
USE REQUIRED SEDIMENT BASIN VOLUME (1,800 FT3 PER DRAINAGE ACRE) TO SIZE
FEMA FLOODWAYS AND NOWENCROACHMENT AREAS ARE PROHIBITED EXCEPT AS OTHERWISE PROVIDED BY SUBSECTION
14-19-2 OF THE WAKE COUNTY UNIFIED DEVELOPMENT ORDINANCE {CERTIFICATIONS AND PERMITS REQUIREDI.
SKIMMER AND ORIFICE DIAMETER.
9.
SEEDING OR COVERING STOCKPILES WITH TARPS OR MULCH IS REQUIRED AND WILL REDUCE EROSION PROBLEMS. TARPS
2, SIZING THE WEIR
SHOULD BE KEYED IN AT THE TOP OF THE SLOPE TO KEEP WATER FROM RUNNING UNDERNEATH THE PLASTIC.
WEIR EQUATION: (MINIMUM WEIR LENGTH OF 10')
10.
IF A STOCKPILE IS TO REMAIN FOR FUTURE USE AFTER THE PROJECT IS COMPLETE (BUILDERS, ETC.}, THE FINANCIAL
Q= CLH3/2. C=3.0 (MAX). H FOR Q IS NOT TO EXCEED 0.5'.
RESPONSIBLE PARTY MUST NOTIFY WAKE COUNTY OF A NEW RESPONSIBLE PARTY FOR THAT STOCKPILE.
AN ADDITIONAL 1.0' OF WEIR CAPACITY IS REQUIRED FOR THE CONVEYANCE OF LARGER STORM
11.
THE APPROVED PLAN SHALL PROVIDE FOR THE USE OF STAGED SEEDING AND MULCHING ON A CONTINUAL BASIS WHILE THE
EVENTS; THEREFORE, THE TOTAL WEIR DEPTH WILL BE 1.5'.
STOCKPILE IS IN USE.
A MINIMUM WEIR LENGTH OF 10' IS REQUIRED.
SHOW CALCULATIONS FOR SKIMMER SIZING AND DRAWDOWN.
12.
ESTABLISH AND MAINTAIN A VEGETATIVE BUFFER AT THE TOE OF THE SLOPE (WHERE PRACTICAL).
SHOW CALCULATIONS FOR THE SIZING OF THE ANTI -FLOTATION BLOCK.
3, SEE EROSION AND SEDIMENT CONTROL REPORT FOR FINAL CALCULATIONS.
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CONCRETE ij� !),1{
WASHOUT, TYP. 1 f �; RAIN GAUGE 8,
J PERMIT/RECORD
BOX
ji
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3 /
/ 7
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REQUIRED BASIN REMOVAL SEQUENCE
I. SCHEDULE A SITE MEETING WITH THE ENVIRONMENTAL CONSULTANT IVANA BARHAM [phone] TO DETERMINE IF A
BASIN CAN BE REMOVED. INSTALL SILT FENCING OR OTHER TEMPORARY EROSION CONTROL MEASURES AS NEEDED PRIOR
TO REMOVAL OF THE BASIN.
2. CONTACT NCDEQ - RALEIGH REGIONAL OFFICE (9191 791-4200 TO DETERMINE THE DIVISION OF ENERGY, MINERAL AND
LAND RESOURCES CONTACT PERSON TO RECEIVE DEWATERING NOTIFICATIONS. AT LEAST 10 DAYS PRIOR TO BEGINNING
DEWATERING ACTIVITY, SEND EMAIL TO NCDEQ-DEMLR CONTACT PERSON AND COPY ENVIRONMENTAL CONSULTANT
THAT MET YOU ONSITE. THE EMAIL SHOULD INCLUDE:
2.1.E&SC JURISDICTION: NCDFQ
2.2. WAKE COUNTY PROJECT: NAME NUMBER
2.3.L CATION ITY TOWN ENVIRONMENTAL CONSULTANT NAME O C O,
1
[ 1.
2.4. ADDRESS THE FOLLOWING:
2A.1. REASON FOR CONVERSION
2.4.2. BASIN #
2.4.3. DEWATERING METHOD
2.4.4. ALL OTHER NECESSARY INFO FROM PART II, SECTION G, ITEM 4 OF THE NCG01. (KEEP EMAIL FOR YOUR NPDES
MONITORING DOCUMENTATION)
3. AFTER RECEIVING POSITIVE CONFIRMATION FROM NCDEQ-DEMLR THAT YOU MAY REMOVE THE BASIN OR ON > DAY 11,
WHICHEVER IS SOONER. REMOVE BASIN(S) AND ASSOCIATED TEMPORARY DIVERSION DITCHES. IF PIPES NEED TO BE
EXTENDED, PERFORM THIS OPERATION AT THIS TIME. FINE GRADE AREA IN PREPARATION FOR SEEDING.
4. PERFORM SEEDBED PREPARATION, SEED, MULCH AND ANCHOR ANY RESULTING BARE AREAS IMMEDIATELY.
5. INSTALL VELOCITY DISSIPATERS AND/OR LEVEL SPREADERS AS REQUIRED ON THE EROSION CONTROL PLAN.
6. WHEN SITE 15 FULLY STABILIZED, CALL ENVIRONMENTAL CONSULTANT FOR APPROVAL OF REMOVING REMAINING
TEMPORARY EROSION CONTROL MEASURES AND ADVICE ON WHEN SITE CAN BE ISSUED A CERTIFICATE OF COMPLETION_
NOTE: A MEETING SHOULD ALSO BE SCHEDULED WITH THE ENVIRONMENTAL CONSULTANT TO DETERMINE WHEN A BASIN
MAY BE CONVERTED FOR STORMWATER USE. SOME MUNICIPALITIES MAY ALSO REQUIRE THIS.
ash
40' 20' 0 40'
SCALF: 1" = 40'
BSA LifeStructures
510 Glenwood Ave, Suite 321
Raleigh, NC 27603-1262
ph 919.334.7301 fx 317.819.7288
WAUKEYC
COMM
SurfarA
Surface 678, PA
SEPI, Inc. C-2197
The Imperial Building
1 Glenwood Ave, Ste 600
215 Morris Street, Suite 150
Raleigh, NC 27603
Durham, NC 27701
Office 919.803.8798
Office 919.419.1199
Web sepiinc, com
Web surface678.com
Daniel Mi11er,PE
THE LOCATIONS OF EXISTING
UNDERGROUND UTILITIES ARE SHOWN IN
AN APPROXIMATE WAY ONLY AND HAVE
NOT BEEN INDEPENDENTLY VERIFIED BY
THE OWNER OR ITS REPRESENTATIVE.
THE CONTRACTOR SHALL DETERMINE THE
EXACT LOCATION OF ALL EXISTING
UTILITIES BEFORE COMMENCING WORK,
AND AGREES TO BE FULLY RESPONSIBLE
FOR ANY AND ALL DAMAGES WHICH MIGHT
BE OCCASIONED BY THE CONTRACTOR'S
0 3 WORKING DAYS
FAILURE TO EXACTLY LOCATE AND
BEFORE YOU DIG
PRESERVE ANY AND ALL UNDERGROUND
UTILITIES.
FOR THE LOCATION OF
UNDERGROUND FACILITIES
NOTICE:
Know what's below.
CONSTRUCTION SITE SAFETY IS THE SOLE
COII before dig.
RESPONSIBILITY OF THE CONTRACTOR
you
NEITHER THE OWNER NORTH F ENGINEER
SHALL BE EXPECTED TO ASSUME ANY
RESPONSIBILITY FOR SAFETY OF THE
WORK, OF PERSONS ENGAGED IN THE
WORK, OF ANY NEARBY STRUCTURES, OR
OF ANY OTHER PERSONS.
GENERAL
EDUCATION
BUILDING #1
AND STUDENT
SERVICES
CLIENT PROJECT NO. - NCCCS #2302
CONSTRUCTION
PLAN SUBMITTAL
_KEYPLAN
PLAN NORTH = BOLD
TRUE NORTH = DASHED
MARWDA-TE ESCRi T IOC
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- ° SEAL �� - ~ Sri SEAL
C-2197
028948
a °
1f (� NOTE:
These drawings are the property of SEPI Engineering
& Construction, Inc. Copyright 2022 All rights
reserved- They may not be used for any purpose
without written permission.
SHEET
PH. 2 EROSION AND SEDIMENT
CONTROL
DATE MAY 19, 2022
BSALS PROJECT NO. 20180006.01
E110
© BSA LifeS£ructures Inc.