20201974 Ver 1_More Information Received_20210323

Staff Review
Does this application have all the attachments needed to accept it into the review process?*
r Yes r No
ID#* Version* 1
20201974
Is this project a public transportation project?* r Yes
r No
Reviewer List:* RickTrone:eads\rvtrone
Select Reviewing Office:* Central Office - [phone]
Does this project require a request for payment to be sent?*
r
Yes
r
No

Project Submittal Form
Please note: fields marked with a red asterisk below are required. You will not be able to submit the form until all
mandatory questions are answered.
Project Type: * r
For the Record Only (Courtesy Copy)
r
New Project
r
Modification/New Project with Existing ID
r
More Information Response
r
Other Agency Comments
r
Pre -Application Submittal
r
Re-Issuance\Renewal Request
r
Stream or Buffer Appeal
Is this supplemental information that needs to be sent to the Corps?*
r Yes r No
Project Contact Information
Name: SIMON GREGG
who is subrritting the inforrration?
Email Address: [e-mail]
Project Information
Existing ID #:
20201974
20170001(no dashes)
Existing Version:
1
1
Project Name: SEVEN MILE CREEK RESTORATION
Is this a public transportation project?
r Yes
r No
Is the project located within a NC DCM Area of Environmental Concern (AEC)?
r Yes r No r Unknown
County (ies)
Durham
Please upload all files that need to be submited.

aick the upload button or drag and drop files here to attach document
001-SEVEN MILE-COVERsigned.pdf
2.68MB
002-SEVEN MILE-NOTESsigned.pdf
171.23KB
003-SEVEN MILE-EXISITING.pdf
665.35KB
004-SEVEN MILE- IMPACTSsig ned. pdf
3.66MB
005-SEVEN MILE-DEMOsigned.pdf
3.85MB
006-SEVEN MILE-SCHEMATICsigned.pdf
874.91 KB
007-SEVEN MILE-GRADINGsigned.pdf
611.88KB
008-SEVEN MILE-PROFILEsigned.pdf
506.85KB
009-SEVEN MILE-SECTIONSsigned.pdf
203.76KB
010-SEVEN MILE-PLANTINGsigned.pdf
3.63MB
011-SEVEN MILE -DETAILS 1signed.pdf
413.25KB
012-SEVEN MILE -DETAILS 2signed.pdf
501.05KB
013-SEVEN MILE -DETAILS 3signed.pdf
208.22KB
014-SEVEN MILE-NCGO1 signed.pdf
5.01 MB
Only pdf or kmz files are accepted.
Describe the attachments
or comments:
The attachments include the final plan set. Including updated impacts on Sheet 4.
Sign and Submit
W By checking the box and signing box below, I certify that:
■ I, the project proponent, hereby certifies that all information contained herein is true, accurate, and complete to
the best of my knowledge and belief.
■ I, the project proponent, hereby requests that the certifying authority review and take action on this CWA 401
certification request within the applicable reasonable period of time.
■ I agree that submission of this online form is a "transaction" subject to Chapter 66, Article 40 of the NC General
Statutes (the "Uniform Electronic Transactions Act');
■ I agree to conduct this transaction by electronic means pursuant to Chapter 66, Article 40 of the NC General
Statutes (the "Uniform Electronic Transactions Act');
■ I understand that an electronic signature has the same legal effect and can be enforced in the same way as a
written signature; AND
■ I intend to electronically sign and submit the online form.
Signature:
Submittal Date: Is filled in autonatically.

OHEOHEOHEO
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OHESEVEN MILE CREEK RESTORATION
VICINITY MAP
SCHEMATIC
SHEET
C1
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TITLE
COVER
NOTES
EXISTING CONDITIONS
PERMIT/IMPACTS
DEMO AND EROSION CONTROL
SCHEMATIC
GRADING
PROFILE
SECTION PLOTS
PLANTING PLAN
DETAILS
DETAILS
DETAILS
NCG-01
DURHAM, NC
PROJECT SITE
USDA NRCS WATERSHED
PROTECTION PROGRAM
LEGEND
EXISTING CONTOURS
EROSION CONTROL NOTES:
1.EROSION AND SEDIMENT CONTROL (E&SC) PERMIT AND A CERTIFICATE OF COVERAGE (COC) MUST BE
OBTAINED BEFORE ANY LAND DISTURBING ACTIVITIES OCCUR.
2.WHEN THE PROJECT IS COMPLETE, THE PERMITTEE SHALL CONTACT DEMLR TO CLOSE OUT THE E&SC PLAN.
AFTER DEMLR INFORMS THE PERMITTEE OF THE PROJECT CLOSE OUT, VIA INSPECTION REPORT, THE PERMITTEE
SHALL VISIT DEQ.NC.GOV/NCG01 TO SUBMIT AN ELECTRONIC NOTICE OF TERMINATION (E-NOT). A $100 ANNUAL
GENERAL PERMIT FEE WILL BE CHARGED UNTIL THE E-NOT HAS BEEN FILLED OUT.
3.CONTACT THE DEMLR WINSTON SALEM REGIONAL OFFICE AT LEAST 48 HOURS PRIOR TO COMMENCING THE
LAND-DISTURBING ACTIVITY. THE CONTACT NUMBER IS [phone]
4.THE CONTRACTOR SHALL CONDUCT SELF-INSPECTIONS OF THE EROSION AND SEDIMENTATION CONTROL
MEASURES AND COMPETE THE COMBINED SELF-INSPECTION FORM FOUND ON THE DEMLR WEBSITE. TWELVE
MONTHS OF COMPLETE INSPECTION FORMS SHALL BE KEPT ON-SITE AND AVAILABLE FOR INSPECTION AT ALL
TIMES. IT IS RECOMMENDED A COPY BE KEPT IN A PERMITS BOX.
5.ALL EROSION CONTROL NEAR ACTIVE CONSTRUCTION MUST BE SET-UP AND INSPECTED PRIOR TO
COMMENCEMENT OF GRADING
OPERATIONS.
6.ALL SLOPES SHALL BE SEEDED AND STABILIZED WITH A DENSE COVERAGE OF GRASS. ANY EXPOSED OR
BARE SLOPES SHALL BE RE-SEEDED OR PROTECTED WITH EROSION CONTROL MATTING. EROSION CONTROL
MATTING SHALL MEET THE REQUIREMENTS OF ROLANKA COIR MAT 70 AND INCLUDE LESS THAN 40% OPENINGS.
7.ALL BACKFILL SHALL BE SUITABLE FOR PLANT GROWTH AND GENERALLY FREE OF DEBRIS OR OTHER
MATERIAL GREATER THAN 2 INCHES IN SIZE.
8.ALL ELEVATIONS AND CHANNEL DIMENSIONS SHALL BE MET WITHIN A TOLERANCE OF 0.1'
9.STABILIZATION MEASURES SHALL BE IMPLEMENTED AS SOON AS POSSIBLE FOLLOWING COMPLETED AREAS
OF CONSTRUCTION. SPECIFIC SEEDING REQUIREMENTS ARE PROVIDED IN THE PLANTING PLAN.
10.PROVIDE TEMPORARY OR PERMANENT GROUNDCOVER ON ALL EXPOSED AREAS WITHIN 7 CALENDAR DAYS
FOLLOWING COMPLETION OF ANY PHASE OF GRADING. PROVIDE A PERMANENT GROUNDCOVER FOR ALL
DISTURBED AREAS WITHIN 14 WORKING DAYS OR WITHIN 90 CALENDAR DAYS (WHICHEVER IS SHORTER)
FOLLOWING COMPLETION OF CONSTRUCTION OR DEVELOPMENT.
11.ALL SEDIMENT AND EROSION CONTROL DEVICES SHALL BE INSPECTED EVERY SEVEN (7) DAYS OR AFTER
EACH RAINFALL OCCURRENCE THAT EXCEEDS ONE-HALF (1/2) INCH. DAMAGED OR INEFFECTIVE DEVICES SHALL BE
REPAIRED OR REPLACED, AS NECESSARY.
12.ALL EROSION CONTROL DEVICES SHALL BE PROPERLY MAINTAINED DURING ALL PHASES OF THE
CONSTRUCTION UNTIL THE COMPLETION OF ALL CONSTRUCTION ACTIVITIES AND ALL DISTURBED AREAS HAVE
BEEN STABILIZED. ADDITIONAL CONTROL DEVICES MAY BE REQUIRED DURING CONSTRUCTION IN ORDER TO
CONTROL EROSION AND/OR OFF-SITE SEDIMENTATION. ALL TEMPORARY CONTROL DEVICES SHALL BE REMOVED
ONCE CONSTRUCTION IS COMPLETE AND THE SITE IS STABILIZED.
13.THE CONTRACTOR MUST TAKE NECESSARY ACTION TO MINIMIZE THE TRACKING OF MUD TO OFF SITE AREAS.
THE CONTRACTOR SHALL DAILY REMOVE MUD/SOIL FROM PAVEMENT, AS MAY BE REQUIRED.
14.THE CONTRACTOR SHALL ACCOMPLISH ALL STREAMBANK EXCAVATION FROM OUTSIDE THE ACTIVE
CHANNEL WHENEVER POSSIBLE. ALL DISTURBED STREAMBANK MUST BE STABILIZED WITH SEEDING, MULCH AND
EROSION CONTROL MATTING BY THE END OF EACH WORKDAY.
PROJECT NARRATIVE
THIS PROJECT INCLUDES RESTORATION AND STABILIZATION OF APPROXIMATELY 350LF OF SEVEN MILE CREEK WHICH
WAS BADLY DAMAGED BY EROSION AND FLOODING DURING HURRICANE FLORENCE. THE PROJECT IS LOCATED IN DURHAM,
NORTH CAROLINA (36.072519, -78.963940). THE PIEDMONT CONSERVATION COUNCIL HAS SECURED GRANT FUNDING
THROUGH THE UNITED STATES DEPARTMENT OF AGRICULTURE, NATURAL RESOURCES CONSERVATION SERVICE,
EMERGENCY WATERSHED PROTECTION PROGRAM FOR DESIGN AND CONSTRUCTION OF THIS RESTORATION. THE
RESTORATION INVOLVES THE CONSTRUCTION OF BOULDER REVETMENT WALLS AND VEGETATED GEOLIFTS,
REINFORCEMENT OF EXISTING RIFFLE STRUCTURES, BANK SLOPING, AND INSTALLATION OF STONE, WOOD, COIR LOGS,
AND EROSION CONTROL MATTING. ALL WORK SHALL BE SUBJECT TO THE DIRECTION AND INSPECTION OF THE PROJECT
ENGINEER.
THIS PROJECT IS LOCATED IN THE ENO RIVER WATERSHED AND MOST OF THE PROJECT IS IN THE SEVEN MILE CREEK
FEMA REGULATED FLOODPLAIN.
PROJECT NOTES:
THE LOCATION AND ALIGNMENT OF ALL IMPROVEMENTS SHOWN ARE APPROXIMATE. THE FINAL LOCATION AND ALIGNMENT SHALL BE
DETERMINED DURING CONSTRUCTION USING BEST PROFESSIONAL JUDGMENT AND APPROVED BY THE PROJECT ENGINEER.
MATERIALS LISTS ARE PROVIDED AS AN APPROXIMATION ONLY. CONTRACTOR SHALL INDEPENDENTLY VERIFY THE NUMBER AND AMOUNT
OF STONE, BACKFILL, OR OTHER ITEMS NECESSARY TO PROPERLY COMPLETE THE JOB.
THE LATEST VERSION OF THE FOLLOWING STANDARDS APPLIES TO THESE SPECIFICATIONS:
A.NCDOT “STANDARD SPECIFICATIONS FOR ROADS AND STRUCTURES”
B.NCDEQ/DEMLR “EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL"
THE CONTRACTOR SHALL CALL THE “CALL BEFORE YOU DIG” TOLL FREE NUMBER TO MAKE SURE THAT ALL UTILITIES ARE LOCATED AND
MARKED. ANY DAMAGE TO EXISTING UTILITIES IS THE RESPONSIBILITY OF THE CONTRACTOR.
ANY DAMAGE RESULTING FROM ACTIONS OF THE CONTRACTOR TO STRUCTURES OR GROUNDS ON SITE WILL BE REPAIRED OR REPLACED
AT THE EXPENSE OF THE CONTRACTOR, TO A QUALITY MEETING OR EXCEEDING THEIR PREVIOUS STANDARDS.
THE CONTRACTOR IS TO ENSURE PUBLIC SAFETY DURING ALL PHASES OF CONSTRUCTION.
THE CONTRACTOR IS RESPONSIBLE FOR CLEARING AND DISPOSING OF ANY MAN-MADE MATERIALS OR OTHER DEBRIS THAT LIE WITHIN THE
CONSTRUCTION LIMITS, AS REQUESTED AND APPROVED BY THE PROJECT ENGINEER.
THE CONTRACTOR IS RESPONSIBLE FOR ENSURING THAT THE STREETS IN FRONT OF THE CONSTRUCTION SITE WILL BE KEPT CLEAN AT ALL
TIMES. IF NEEDED TO ACCOMPLISH THIS TASK A WASH STATION MAY BE REQUIRED.
STREAM CONSTRUCTION NOTES:
1. ALL PROPOSED CHANNELS AND TEMPORARY AND PERMANENT CROSSINGS SHALL BE CONSTRUCTED IN A DRY CONDITION VIA OFFLINE
CONSTRUCTION WHERE POSSIBLE. DIVERSIONS, COFFER DAMS, AND PUMP AROUND OPERATIONS SHOULD BE UTILIZED TO FACILITATE
DRY CONSTRUCTION WHERE POSSIBLE.
2. ALL IMPERVIOUS DIKES AND PUMPING APPARATUS SHALL BE REMOVED FROM THE STREAM AT THE COMPLETION OF EACH WEIR TO
RESTORE NORMAL FLOW BACK TO THE CHANNEL UNLESS OTHERWISE APPROVED BY THE ENGINEER. WITH APPROVAL, A PUMP AROUND
MAY BE ALLOWED TO RUN CONTINUOUSLY IF THERE IS NO FORECAST FOR RAIN OVERNIGHT, AND/OR THE PUMP APPARATUS IS
MAINTAINED AND MONITORED CONTINUOUSLY.
3. CONSTRUCT UPSTREAM PORTION OF THE WORK FIRST, WORKING IN AN UPSTREAM TO DOWNSTREAM DIRECTION, UNLESS OTHERWISE
APPROVED PROJECT ENGINEER.
4. REMOVE AND STOCKPILE TOPSOIL WITHIN AREAS THAT ARE TO BE CUT 9" OR MORE BELOW EXISTING GRADE. STOCKPILED TOPSOIL IS TO
BE REPLACED ON TERRACE OR STREAMBANK SLOPES DURING FINAL GRADING.
5. INSTALL STRUCTURES AS SHOWN ON PLANS AND DETAILS. PRIOR TO FINE GRADING, OBTAIN APPROVAL BY PROJECT ENGINEER ON
INSTALLATION OF ALL STRUCTURES.
6. REMOVE AND STOCKPILE GRAVEL SUBSTRATE LOCATED WITHIN EXISTING CHANNELS. THIS MATERIAL SHALL BE UTILIZED IN THE TOP
LAYERS OF THE REINFORCED RIFFLES. IN AREAS WHERE THERE IS NOT ENOUGH NATIVE SUBSTRATE TO PLACE AN MINIMUM 6" LAYER
ALONG PROPOSED SHALLOW/RIFFLE SECTIONS, SUPPLEMENT THE NATIVE SUBSTRATE WITH A 50 50 MIX OF #57 AND #4 STONE.
7. UPON COMPLETION OF FINE GRADING, INSTALL STREAM BANK STABILIZATION INCLUDING, EROSION CONTROL MATTING OR SOD MATS
ALONG CHANNEL BANKS.
MATERIAL ESTIMATES:
PROJECT AREA: 0.8 AC
NET FILL: 700 CY
BOULDERS (3'x4'x2' OR LARGER): 300 EA
#57 STONE BACKFILL OR SIMILAR: 95 TN
EQUAL PARTS CLASS A, B, & 1: 155 TN
TEMPORARY SEEDING AREA: 0.6 AC
PERMANENT SEEDING AREA: 0.2 AC
RIPARIAN SEEDING AREA: 0.3 AC
GENERAL SEEDING NOTES:
RE-SEED ALL DISTURBED AREAS AND SLOPES AS DIRECTED. PERMANENT SEEDING (SPRING/SUMMER ONLY) OF: 50LBS/ACRE TALL
FESCUE, 5LBS/ACRE CENTIPEDE, 25 LBS/ACRE BERMUDAGRASS (HULLED) APPLY FERTILIZER (10-20-20) AT A RATE OF 500LBS/AC AND LIME
AT 4000LBS/ACRE. SPREAD STRAW MULCH ON ANY DISTURBED AREAS AT A RATE OF 1.5 TONS /ACRE.
SEEDING NOTES:
ALL DISTURBED AREAS SHALL BE DRESSED TO A DEPTH OF 8 INCHES. THE TOP 3 INCHES SHALL BE PULVERIZED TO PROVIDE A UNIFORM
SEEDBED. AGRICULTURAL LIME SHALL BE APPLIED AT THE RATE OF 95 LB/1000 SQ. FT. IMMEDIATELY BEFORE PLOWING. GRASS SEED SHALL BE
APPLIED AT THE RATES OUTLINED IN THE FOLLOWING TABLES.
10-10-10 (FALL) / 5-10-10 (SPRING) FERTILIZER SHALL BE APPLIED TO ALL DISTURBED AREAS AT A RATE OF 2 TONS/ACRE AND MULCHING SHALL
CONSIST OF SMALL GRAIN STRAW APPLIED AT A RATE OF 1-2 TONS/ACRE. MULCHED AREAS SHALL BE TACKED WITH ASPHALT AT A RATE OF
435 GALLONS PER ACRE, OR OTHER APPROVED METHOD SUFFICIENT TO HOLD THE STRAW IN PLACE.
IF ACTIVE CONSTRUCTION CEASES, MEANING NO SUBSTANTIAL OR SIGNIFICANT PROGRESS IS MADE IN ANY AREA FOR MORE THAN 15 DAYS,
ALL DISTURBED AREAS MUST BE SEEDED, MULCHED, AND TACKED UNLESS WRITTEN APPROVAL IS GRANTED BY THE STORMWATER
ENGINEERING TECHNICIAN. INCIDENTAL GRADING SHALL NOT CONSTITUTE SUBSTANTIAL OR SIGNIFICANT PROGRESS IN CONSTRUCTION
ACTIVITY.
AS A PART OF PERMANENT SEEDING, MAINTENANCE MAY BE REQUIRED TO
MAINTAIN VEGETATION FOR 12 MONTHS (INCLUDING MOWING AND WATERING). THIS MAINTENANCE SHALL BE CONSIDERED A PART OF
ESTABLISHING PERMANENT GROUND COVER.
PROPOSED CONTOURS
LIMITS OF DISTURBANCE
REINFORCED RIFFLE
BOULDER WALL OR SILL
VEGETATED GEOLIFTS
BANK SLOPING
UPLAND GRADING
IMPACT AREA
CLEAR & GRUB
PLANTING NOTES:
1.ALL INVASIVE SPECIES TO BE REMOVED FROM ALL AREAS BEFORE PROCEEDING WITH PLANTINGS.
2.ALL PLANTS SHALL BE INSPECTED AND APPROVED BY THE PROJECT ENGINEER PRIOR TO INSTALLATION. PLANTING
LOCATIONS ARE APPROXIMATE AND MUST BE APPROVED BY THE PROJECT ENGINEER PRIOR TO INSTALLATION.
3.AREAS TO BE PLANTED ARE SHOWN ON THE PLAN. IF UTILITIES ARE ENCOUNTERED, PLANTS MAY BE REPOSITIONED
SLIGHTLY TO AVOID IMPACT.
4.PLANTS AND PLANTING SHALL MEET THE STANDARDS OF ANSI Z60.1 AND ANSI A 300 AND BE COMPLETED ACCORDING
TO PROJECT SPECIFICATIONS.
5.ALL PLANTING SHALL BE DONE IN A SUITABLE SEASONAL TIMEFRAME FOR EACH SPECIES:
5.1.WETLAND SEEDING, PLUGS, AND SHRUBS SHALL BE INSTALLED IN THE SPRING PRIOR TO JUNE 1 OR IN THE FALL
PRIOR TO OCTOBER 31.
5.2.TREES SHALL BE PLANTED IN THEIR DORMANT SEASON AND PRIOR TO MARCH 1.
6.TREES SHALL BE OF SUFFICIENT SIZE AND HEALTH TO BE STABLE WITHOUT STAKING. STAKING MAY BE ALLOWED WITH
APPROVAL AND INSPECTION OF THE PROJECT ENGINEER.
7.PERMANENT SEEDING SHALL NOT CONTAIN ANY FESCUE GRASSES. PLACE SEEDING AS SPECIFIED IN THE PLAN.
8.A DENSE STAND OF TEMPORARY AND PERMANENT VEGETATION IS REQUIRED PRIOR TO PROJECT COMPLETION. ANY
AREAS NOT ESTABLISHED MUST BE RETILLED, RESEEDED, AND PROTECTED WITH COIR MATTING.
9.SPREAD SEED UNIFORMLY UNDER COIR FIBER MATTING ALONG CHANNEL BANKS.
10.STABILIZE ALL EXPOSED AREAS AT STREAM BANKS WITH THE RIPARIAN SEED MIX.
11.SILKY WILLOW & SILKY DOGWOOD LIVE STAKES PLANTED ALONG OUTSIDE MEANDER BENDS AND SPACED ACCORDING
TO DETAILS.
12.SEE TECHNICAL SPECIFICATIONS FOR ADDITIONAL INSTRUCTIONS AND REQUIREMENTS.
13.EROSION CONTROL MEASURES SHALL BE PROPERLY MAINTAINED UNTIL PERMANENT VEGETATION IS ESTABLISHED
AND FINAL APPROVAL HAS BEEN ISSUED. THE CONTRACTOR SHALL INSPECT EROSION CONTROL MEASURES AT THE
END OF EACH WORKING DAY TO ENSURE MEASURES ARE FUNCTIONING PROPERLY.
14.DISTURBED AREAS NOT AT FINAL GRADE SHALL BE TEMPORARILY VEGETATED WITHIN 10 WORKING DAYS.
15.UPON COMPLETION OF FINAL GRADING, PERMANENT VEGETATION SHALL BE ESTABLISHED FOR ALL DISTURBED
AREAS WITHIN 10 WORKING DAYS. SEEDING SHALL BE IN ACCORDANCE WITH EROSION CONTROL PLAN.
16.ALL DISTURBED AREAS SHALL BE PREPARED PRIOR TO PLANTING BY DISC OR SPRING-TOOTH CHISEL PLOW TO
MINIMUM DEPTH OF 12 INCHES. MULTIPLE PASSES SHALL BE MADE ACROSS PLANTING AREAS WITH THE IMPLEMENT
AND THE FINAL PASS SHALL FOLLOW TOPOGRAPHIC CONTOURS.
17.TREATMENT/REMOVAL OF INVASIVE SPECIES, PINES AND SWEET GUMS LESS THAN 6" DBH SHALL BE PERFORMED
THROUGHOUT THE PLANTED AREA.
18.SPECIES SHALL BE DISTRIBUTED SUCH THAT 3 TO 6 PLANTS OF THE SAME SPECIES ARE GROUPED TOGETHER.
19.TEMPORARY SEED MIX SHALL BE APPLIED AT A RATE OF 150 LBS/ACRE TO ALL DISTURBED AREAS WITH SLOPES
EQUAL TO OR STEEPER THAN 3:1.
20.RIPARIAN SEED MIX SHALL BE APPLIED TO ALL DISTURBED AREAS WITHIN THE FLOODPLAIN CORRIDOR AT A RATE OF
20 LBS/ACRE.
25. PERCENT COMPOSITION OF PLANTINGS MAY VARY BASED ON SPECIES AVAILABILITY AT TIME OF PLANTING
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3. THE PORTION OF THIS PROPERTY LYING ALONG SEMEN MILE CREEK IS IN ZONE 1, CHARLES H. SMITH, CERT7FY THAT THIS MAP WAS DRAWN UNDER MY
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DURHAM COUNTY, NORTH CAROLINA, MAP NUMBER 3720081400K, EFFEC77VE
= C7 : 2:
DATE OCTpBER 19> 2018, FLOOD LIMITS SHOWN ARE FROM DURHAM COUNTY GIS _ 9 WTNESS MY ORIGINAL SIGNA 7URE. REGIS7RA77ON NUMBER AND SEAL.
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MAPPING AND ARE APPROXIMATE. = .•a 3U�N = GSC PROJECT 20015
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S A TOPOGRAPHIC SURVEY
4. HORIZONTAL CONTROL BASED ON NAD83 (2012); VERTICAL CONTROL BASED ON E 8' ;
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4072 BARRETT DRIVE
ON FIELD LOCATION OF SURFACE FEATURES AND ARE APPROXIMATE. OTHER RALEIGN, NC 27609 DURHAM COUNTY, NORTH CAROLINA
SUBSURFACE UTIL177ES MAY EXIST ON THIS S1TE THAT ARE NOT INCLUDED IN DATE• SCALE.- SHEET•
THIS SURVEY. [phone] '' FAX (919) 7$7-5806
SEP. 8, 2020 I" = 201 OF ]
Drawing:
NC CORPORATE LICENSE No. C-23M
-WEED
RE W SEP. 9, 2020
SevenMile_.dwg
Sheet E2

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SECTION LINES
(SEE SHEET 9)
SCALE: 1'' = 20'
Feet
0 20 40
OHEOHEOHEOHEOHEO
H
E
OHEOHELEGEND
EXISTING CONTOURS
PROPOSED CONTOURS
LIMITS OF DISTURBANCE
SECTION LINES
(SEE SHEET 9)
SCALE: 1'' = 30'
LEGEND
EXISTING SURFACE
PROPOSED SURFACE
HORIZONTAL SCALE: 1'' = 40'
VERTICAL SCALE: 1'' = 10'
Feet
0 30 60
LEGEND
EXISTING SURFACE
PROPOSED SURFACE
HORIZONTAL SCALE: 1'' = 30'
VERTICAL SCALE: 1'' = 10'
OHEOHEOHEOHEOHEOHEOHEOHEOHEO
H
E
O
H
E
O
H
E
OHEOHEOHERIPARIAN SEED MIX
COMMON NAME (SCIENTIFIC)PERCENT
JOE-PYE-WEED (EUPATORIUM FISTULOSUM 10
RICE CUT GRASS (LEERSIEA ORYZOIDES)10
SWITCHGRASS ( PANCIUM VIRGATUM)10
FOX SEDGE (CAREX VULPINOIDEA)10
DEER TONGUE (PANICUM CLANDESTINUM)10
SOFT RUSH (JUNCUS EFFUSUS)10
HOP SEDGE (CAREX LUPULINA)10
VIRGINIA WILDRYE (ELYMUS VIRGINICUS)10
BLACK EYED SUSAN (RUDBEKIA HIRTA)10
WEEPING LOVE GRASS (ERAGROSTIS CURVULA)10
QUANTITY ESTIMATE APPLY 20 LBS/AC
LEGEND
PROPOSED CONTOURS
LIMITS OF DISTURBANCE
LIVE STAKES & WETLAND
PLUGS
RIPARIAN SEED MIX &
NATIVE GRASS PLUGS
PERMANENT SEED
LIVE STAKES
COMMON NAME
(SCIENTIFIC)TYPE SPACING QUANTITY
SILKY WILLOW (SALIX SERICEA)LIVE STAKE 2 Ft 113
SILKY DOGWOOD (CURNUS AMOMUM)LIVE STAKE 2 Ft 113
WETLAND PLUGS
COMMON NAME
(SCIENTIFIC)TYPE SPACING QUANTITY
SOFT RUSH (JUNCUS EFFUSUS)2 INCH PLUG 2 Ft 45
SEDGE (CAREX LUPIDA)2 INCH PLUG 2 Ft 45
SWITCHGRASS (PANICUM VIRGATUM)2 INCH PLUG 2 Ft 45
BLUE FLAG IRIS (IRIS VIRGINICA)2 INCH PLUG 2 Ft 45
SWAMP SUNFLOWER (HELIANTHUS
ANGUSTIFOLIUS)
2 INCH PLUG 2 Ft 45
NATIVE GRASS PLUGS
COMMON NAME (SCIENTIFIC)TYPE SPACING QUANTITY
MUHLY GRASS (MUHLENBERGIA CAPILLARIS)2 INCH PLUG 2 Ft 490
SEDGE (CAREX LUPIDA)2 INCH PLUG 2 Ft 490
SWITCHGRASS (PANICUM VIRGATUM)2 INCH PLUG 2 Ft 490
LITTLE BLUESTEM (SCHIZACHYRIUM SCOPARIUM)2 INCH PLUG 2 Ft 490
BIG BLUESTEM (ANDROPOGON GERARDII)2 INCH PLUG 2 Ft 490
SCALE: 1'' = 20'
Feet
0 40 80
~4'~3'SURGE & #57 STONE
FILTER FABRIC
BACKFILLED BANK
FRONT FACE OF BOULDERS MAINTAIN
A SLIGHT SET-BACK
STREAMBED
12" MAX WIDTH FOR STONE BACKFILL
BOULDER BANK PROTECTION
3
1
A
PLAN VIEWFLOW PROFILE A-A
HEAD OF RIFFLE
ELEVATION POINTA HEAD OF RIFFLE
ELEVATION POINT
GLIDE RIFFL
E
SECTION B-B
BB
TOP OF BANK
(TYP)
TAIL OF RIFFLE
ELEVATION
POINT
TOP OF
BANK (TYP)
TOE OF SLOPE
(TYP)
TOE OF SLOPE
TAIL OF RIFFLE
ELEVATION POINT
RIFFLE STONE
TO TIE INTO CHANNEL
BANKS 0.5'
12" DEPTH OF
EQUAL PARTS CLASS
A, B, AND 1 STONE
REINFORCED RIFFLE
5' MIN
BOULDER
BOULDER
MIX IN RECYCLED EXISTING
SUBSTRATE AS POSSIBLE
FILL
SL
O
P
E
FLOW
TEMPORARY SILT FENCE NOTES:
1.FILTER FABRIC FENCE SHALL BE A MINIMUM OF 32" IN WIDTH AND SHALL HAVE A MINIMUM OF 6 LINE WIRES WITH 12" STAY SPACING.
2.WOVEN FILTER FABRIC TO BE USED WHERE SILT FENCE IS TO REMAIN FOR A PERIOD OF MORE THAN 30 DAYS.
3.STEEL POSTS SHALL BE 5'-0" IN HEIGHT AND BE OF THE SELF-FASTENER ANGLE STEEL TYPE.
4.TURN SILT FENCE UP SLOPE AT ENDS.
5.DRAINAGE AREA CAN NOT BE GREATER THAN 1/4 ACRE PER 100 FT OF FENCE.
6.SLOPE LENGTHS CAN NOT EXCEED CRITERIA SHOWN IN TABLE 6.62A NORTH CAROLINA EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL.
7.DO NOT INSTALL SEDIMENT FENCE ACROSS STREAMS, DITCHES, WATERWAYS OR OTHER AREAS OF CONCENTRATED FLOW.
8.INSTALL POSTS WITH THE NIPPLES FACING AWAY FROM THE SILT FENCE.
9.ATTACH THE FABRIC TO EACH POST WITH THREE TIES WITH THE TOP TIE WITHIN 8” OF THE TOP OF THE FABRIC.
10.WRAP APPROXIMATELY 6 INCHES OF FABRIC AROUND THE END POSTS AND SECURE WITH 3 TIES.
11.CONSTRUCT THE FILTER FABRIC FROM A CONTINUOUS ROLL CUT TO THE LENGTH OF THE BARRIER TO AVOID JOINTS. WHEN JOINTS ARE NECESSARY,
SECURELY FASTEN THE FILTER CLOTH ONLY AT A SUPPORT POST WITH 4 FEET MINIMUM OVERLAP TO THE NEXT POST.
TEMPORARY SILT FENCE MAINTENANCE NOTES:
1.INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY REQUIRED REPAIRS IMMEDIATELY.
2.SHOULD THE FABRIC OF THE SEDIMENT FENCE COLLAPSE, TEAR, DECOMPOSE OR BECOME INEFFECTIVE, REPLACE IT PROMPTLY.
3.REMOVE SEDIMENT DEPOSITS AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME FOR THE NEXT RAIN AND TO REDUCE PRESSURE ON THE FENCE.
TAKE CARE TO AVOID UNDERMINING THE FENCE DURING CLEANOUT.
4.REMOVE ALL FENCING MATERIALS AND UNSTABLE SEDIMENT DEPOSITS AND BRING THE AREA TO GRADE AND STABILIZE IT AFTER THE CONTRIBUTING
DRAINAGE AREA HAS BEEN PROPERLY STABILIZED.
WOVEN
FILTER
FABRIC
STEEL POST
8' MAX
2'-0"STEEL POST
WOVEN FILTER FABRIC
30" MIN24" FILTER FABRICANCHOR SKIRT 8" MINIMUM
TEMPORARY SILT FENCELIVE STAKE
LIVE STAKE DETAIL
PLAN VIEW
CROSS-SECTION
TOP OF STREAMBANK
NOTES
1. STAKES SHALL BE CUT AND INSTALLED ON THE SAME DAY.
2. STAKES THAT HAVE BEEN SPLIT SHALL BE REJECTED AND
NOT USED FOR CONSTRUCTION.
3. STAKES SHALL BE INSTALLED WITH BUDS POINTING
UPWARD.
4. STAKES SHALL BE INSTALLED PERPENDICULAR TO BANK.
5. STAKES SHALL BE 0.5" - 2" INCHES IN DIAMETER AND 30" IN
LENGTH MINIMUM.
6. STAKES SHALL BE INSTALLED WITH APPROXIMATELY 3" OF
STAKE REMAINING ABOVE GROUND.
7. STAKE SPACING SHALL BE 3' ON CENTER.
STAKES SHALL BE
PLANTED & INSTALLED
FROM TOP OF BANK TO
TOE OF SLOPE
2.1'
1' MAX
3.0'
ANGLE CUT TO
45 DEGRESS
LIVE CUTTING
0.5" - 2" DIA
BUDS FACING UPWARD
SQUARE CUT TOP
30" IN LENGTH
MINIMUM
TOP OF
STREAMBANKTOP OF
STREAMBANK
TOE OF SLOPE
TOE OF SLOPE
SLOPE BANK PER
PLAN SHEETS
2'-3' BETWEEN STAKES,
DEPENDING ON LOCATION,
SEE NOTE 7 BELOW
1' MAX
CROSS-SECTION
FOLLOWING DIMENSIONS:
GREEN ECO-STAKE OR APPROVED EQUAL WITH THE
THE WOOD STAKE SHALL BE THE NORTH AMERICAN
12.00 IN (30.48 CM)
0.40 IN (1.02 CM)
0.60 IN (1.52 CM) (TAPERED TO POINT)
0.40 IN (1.02 CM)
1.25 IN (3.18 CM)
11.00 IN (27.94 CM)
TOTAL LENGTH
LEG THICKNESS
LEG WIDTH
HEAD WIDTH
LEG LENGTH
HEAD THICKNESS
TYPICAL TRENCH STAKE
2'
2"
PLAN VIEW
EROSION CONTROL MATTING NOTES
1.BANKS SHALL BE SEEDED (PERMANENT & TEMPORARY) PRIOR TO PLACEMENT OF
MATTING.
2. WOODEN STAKES SHALL BE PLACED IN A DIAMOND SHAPE PATTERN PER THE PLAN
VIEW.
3. TRENCH STAKES AND WOOD STAKES SHALL BE PLACED A MAXIMUM DISTANCE APART
OF 3'.
4.EROSION CONTROL MATTING (ECM) SHOULD BE USED TO AID PERMANENT VEGETATED
STABILIZATION OF SLOPES 2:1 OR AREAS SPECIFIED IN THE PLANS.
5.RCM SHOULD BE USED WHEN MULCH CANNOT BE ADEQUATELY TACKED AND WHERE
IMMEDIATE GROUND COVER IS REQUIRED TO PREVENT EROSION DAMAGE.
6.6” MINIMUM OVERLAP IN THE HORIZONTAL
EROSION CONTROL MATTING MAINTENANCE NOTES
1.INSPECT ECM AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT (1/2 INCH OR GREATER)
RAINFALL EVENT. REPAIR IMMEDIATELY.
2.GOOD CONTACT WITH THE GROUND MUST BE MAINTAINED, AND EROSION MUST NOT
OCCUR BENEATH THE ECM.
3.ANY AREAS OF THE ECM THAT ARE DAMAGED OR NOT IN CLOSE CONTACT WITH THE
GROUND SHALL BE REPAIRED AND STAPLED.
4.IF EROSION OCCURS DUE TO POORLY CONTROLLED DRAINAGE, THE PROBLEM SHALL
BE FIXED AND THE ERODED AREA PROTECTED.
5.MONITOR AND REPAIR THE ECM AS NECESSARY UNTIL GROUND COVER IS
ESTABLISHED.
BOTTOM OF CHANNEL
EROSION CONTROL MATTING SHALL BE
PLACED IN 12 INCH DEEP TRENCH, STAKED,
BACKFILLED AND COMPACTED
TOE OF SLOPE
WOOD STAKE
TOP OF STREAMBANK
EROSION CONTROL MATTING SHALL BE
PLACED IN 12 INCH DEEP TRENCH, STAKED,
BACKFILLED AND COMPACTED
2' TRENCH
STAKE WITH
NAIL
2' TRENCH
STAKE WITH
NAIL
TRENCH
TOP OF BANK
WOOD STAKE
TRENCH
TOP OF BANK
TOE OF SLOPE
EROSION CONTROL
MATTING TO BE EXTENDED
TO TRENCH AT TOE OF SLOPE
EROSION CONTROL MATTING
PUBLIC STREET
EXISTING GROUND
50' MIN.18' MIN.6" MIN.TYPE II FILTER FABRIC
UNDER 2"-3" COURSE AGGREGATE
50' MIN.PUBLIC STREETNOTES:
1.A STABILIZED ENTRANCE PAD OF 2"-3" COURSE AGGREGATE SHALL BE LOCATED WHERE TRAFFIC
WILL ENTER OR LEAVE THE CONSTRUCTION SITE ONTO A PUBLIC STREET OR EXISTING
GRAVEL/PAVED SURFACE.
2.FILTER FABRIC OR COMPACTED CRUSHER RUN STONE SHALL BE USED AS A BASE FOR THE
CONSTRUCTION ENTRANCE.
3.THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING OR FLOWING
OF SEDIMENT ONTO PUBLIC STREETS OR EXISTING PAVEMENT. THIS MAY REQUIRE PERIODIC TOP
DRESSING WITH ADDITIONAL STONE AS CONDITIONS WARRANT AND REPAIR OR CLEANOUT OF ANY
MEASURES USED TO TRAP SEDIMENT.
4.ANY SEDIMENT SPILLED, DROPPED, WASHED, OR TRACKED ONTO PUBLIC STREETS MUST BE
REMOVED IMMEDIATELY.
5.WHEN APPROPRIATE, WHEELS MUST BE CLEANED TO REMOVE SEDIMENT PRIOR TO ENTERING A
PUBLIC STREET. WHEN WASHING IS REQUIRED, IT SHALL BE DONE IN AN AREA STABILIZED WITH
CRUSHED STONE WHICH DRAINS INTO AN APPROVED SEDIMENT BASIN SEE STD. NO. 30.11B.
6.NCDOT MAY REQUIRE A STANDARD COMMERCIAL DRIVEWAY (STD. 10.24 & 10.25) TO ACCESS THE
CONSTRUCTION SITE IF THE DRIVEWAY IS ON A THOROUGHFARE.
CONSTRUCTION ENTRANCE
VEGETATED GEOLIFT
PLAN VIEW
BASE FLOW (WSEL)
MATTING ROLL
WIDTH
BACKFILL
DEPTH*FLOWDIRECTIONVEGETATED GEOLIFT STRUCTURE NOTES:
1.IF GEOLIFT IS NOT FRONTED BY A ROCK VANE, INCORPORATE A BOULDER TOE
WITHIN THE STONE BACKFILL. BOULDERS SHALL BE
NO LESS THAN 4.0'x3.0'x2.0'.
2.THE CHANNEL BASE FLOW OR WATER SURFACE ELEVATION (WSEL) WILL VARY
SEASONALLY AND MAY BE VERY LOW DURING TIMES OF DROUGHT. DURING
DROUGHT, AS DETERMINED BY THE ENGINEER, THE WSEL WILL BE CONSIDERED
TO BE EQUAL TO THE DOWNSTREAM GRADE CONTROL ELEVATION.
3. THE CONTRACTOR WILL BE RESPONSIBLE FOR CHANGES TO THE VEGETATED
GEOLIFT PLACEMENT IF IT IS DETERMINED BY THE ENGINEER THAT THE
VEGETATED GEOLIFT WAS NOT INSTALLED PROPERLY.
4. PLANTS SHALL MEET MATERIALS SPECIFICATIONS OUTLINED IN THE
SPECIAL PROVISIONS.
5.AT THE DISCRETION OF THE PROJECT ENGINEER, COIR BLOCKS SHALL BE USED
IN ALL LIFT LAYERS WITHIN THE GEOLIFT.
1.0
1.0
TOE OF BANK
EDGE OF WATER
LOWER LIFT
UPPER LIFTS
CUT E.C. MATTING AND INSTALL
PLANTS PER PLANTING PLAN
EROSION CONTROL MATTING (TYP.)
TRENCH
6" OVERLAP, SHINGLED IN
DIRECTION OF FLOW
TOP OF BANKEXISTING STREAMBED
TOE OF BANK
COMPACTED AMENDED SOIL
EROSION CONTROL MATTING AND BURLAP
CLOTH WRAPS AROUND LIFT AND COIR BLOCK
(SEE NOTE #5)
EROSION CONTROL MATTING (TYP.)
UPPER SLOPE GRADED AT
2H:1V OF LESS
MINIMUM 2.5'
1FT
UNDISTURBED EARTH
EXCAVATED SUBGRADE
STONE BACKFILL
EQUAL PARTS CLASS A, CLASS B
AND CLASS 1 RIP RAP, 2.0' DEPTH x BACKFILL
DEPTH* , BACKFILL VOIDS WITH ONSITE SOIL
LOW LAYER INVERT* - TOP OF
STONE TOE BACKFILL
2.0'
CROSS-SECTION A-A'
PLAN VIEW
DRAINAGE
SWALE FLOW
PROFILE VIEW
FOOTER ROCK
FLOW
FILTER
FABRIC
TOE OF
BANK
TOP OF BANK
TOE OF
BANK
A'A
BOULDER CASCADE TO SPLASH PAD
CONCRETE
SPLASH PAD
DRAINAGE
SWALE
CONCRETE
SPLASH PAD
CLASS 2 STONE 3FT
THICK WHERE
SEWER CLEARANCE
ALLOWS
STREAM
FLOW
TIE INTO
BOULDER
WALL
NOTES:FLOWSEQUENCE OF CONSTRUCTION FOR TYPICAL PUMP AROUND
PUMP AROUND PUMP BASEFLOW
IMPERVIOUS SHEET
IMPERVIOUS DIKE
1. EXCAVATION SHALL BE PERFORMED IN ONLY DRY SECTIONS OF CHANNEL.
2. IMPERVIOUS DIKES SHOULD BE USED TO ISOLATE WORK AREAS FROM
STREAM FLOW.
3. THE CONTRACTOR SHALL NOT DISTURB MORE AREA THAN CAN BE
STABILIZED IN ONE WORKING DAY.
4. THE PUMP AROUND PUMP SHOULD ADEQUATELY CONVEY X CFS FOR MILL
CREEK.
5. THE PUMP AROUND PUMP SHOULD ADEQUATELY CONVEY X CFS FOR SALEM
CREEK.
6. THE PUMP AROUND PUMP SHOULD ADEQUATELY CONVEY X CFS FOR
UT-SALEM CREEK.
7. PROVIDE STABILZED OUTLET TO STREAM BANK.
FILTER FABRIC
FOR DRAINAGE
TYPE 2
(NON-WOVEN)
SPECIAL STILLING BASIN
EXISTING
GROUND
EXISTING
CHANNEL
TEMPORARY
FLEXIBLE
HOSE
SPECIAL STILLING BASIN
(SEE PROJECT SPECIAL
PROVISIONS)
DEWATERING PUMP
IMPERVIOUS DIKE (SEE
PROJECT SPECIAL
PROVISIONS)
TEMPORARY
PIPING
IMPERVIOUS
DIKE (SEE
PROJECT
SPECIAL
PROVISIONS)
SANDBAG/STONE
WORKING
AREA
TOP OF STREAM BANK
1. INSTALL SPECIAL STILLING BASINS AT THE DOWNSTREAM END OF THE DESIGNATED PROJECT WORKING AREA.
2. THE CONTRACTOR WILL INSTALL THE PUMP AROUND PUMP AND THE TEMPORARY PIPING THAT WILL CONVEY
THE BASE FLOW FROM UPSTREAM OF THE WORK SITE.
3. INSTALL UPSTREAM IMPERVIOUS DIKE AND BEGIN PUMPING OPERATIONS FOR STREAM DIVERSION.
4. INSTALL THE DOWNSTREAM IMPERVIOUS DIKE AND PUMPING APPARATUS IF NEEDED TO DEWATER THE
ENTRAPPED AREA. THE PUMP AND HOSE FOR THIS PURPOSE SHALL BE OF SUFFICIENT SIZE TO DEWATER
THE WORK AREA. THIS WATER WILL FLOW INTO A SPECIAL STILLING BASIN.
5. THE CONTRACTOR WILL PERFORM STREAM RESTORATION WORK IN ACCORDANCE WITH THE PLAN AND
FOLLOWING THE GENERAL CONSTRUCTION SEQUENCE.
6. THE CONTRACTOR WILL EXCAVATE ANY ACCUMULATED SILT AND DEWATER BEFORE REMOVAL OF THE
IMPERVIOUS DIKE. REMOVE IMPERVIOUS DIKES, PUMPS, AND TEMPORARY FLEXIBLE HOSE/PIPING STARTING
WITH THE DOWNSTREAM DIKE FIRST.
7. ONCE THE WORKING AREA IS COMPLETED, REMOVE THE STILLING BASINS AND STABILIZE DISTURBED AREAS
WITH SEED AND MULCH.
12" MIN. CLASS A STONE
FLOW
CLASS I RIPRAP SPLASH
PAD
PROVIDE STABILIZED
OUTLET TO STREAM
BANK
TYPICAL PUMP AROUND OPERATION
GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCGO1 CONSTRUCTION GENERAL PERMIT
Implementing the details and specifications on this plan sheet will result in the construction
activity being considered compliant with the Ground Stabilization and Materials Handling
sections of the NCGO1 Construction General Permit (Sections E and F, respectively). The
permittee shall comply with the Erosion and Sediment Control plan approved by the
delegated authority having jurisdiction. All details and specifications shown on this sheet
may not apply depending on site conditions and the delegated authority having jurisdiction.
SECTION E: GROUND STABILIZATION
Required Ground Stabilization Timeframes
Stabilize within this
Site Area Description
many calendar
Timeframe variations
days after ceasing
land disturbance
(a) Perimeter dikes,
swales, ditches, and
7
None
perimeter slopes
(b) High Quality Water
7
None
(HQW) Zones
(c) Slopes steeper than
If slopes are 10' or less in length and are
3:1
7
not steeper than 2:1, 14 days are
allowed
-7 days for slopes greater than 50' in
length and with slopes steeper than 4:1
-7 days for perimeter dikes, swales,
(d) Slopes 3:1 to 4:1
14
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
-7 days for perimeter dikes, swales,
(e) Areas with slopes
ditches, perimeter slopes and HQW Zones
flatter than 4:1
14
-10 days for Falls Lake Watershed unless
there is zero slope
Note: After the permanent cessation of construction activities, any areas with temporary
ground stabilization shall be converted to permanent ground stabilization as soon as
practicable but in no case longer than 90 calendar days after the last land disturbing
activity. Temporary ground stabilization shall be maintained in a manner to render the
surface stable against accelerated erosion until permanent ground stabilization is achieved.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain
will not dislodge the soil. Use one of the
techniques in the table below:
Temporary Stabilization
Permanent Stabilization
• Temporary grass seed covered with straw or
• Permanent grass seed covered with straw or
other mulches and tackifiers
other mulches and tackifiers
• Hydroseeding
• Geotextile fabrics such as permanent soil
• Rolled erosion control products with or
reinforcement matting
without temporary grass seed
• Hydroseeding
• Appropriately applied straw or other mulch
• Shrubs or other permanent plantings covered
• Plastic sheeting
with mulch
• Uniform and evenly distributed ground cover
sufficient to restrain erosion
• Structural methods such as concrete, asphalt or
retaining walls
• Rolled erosion control products with grass seed
POLYACRYLAMIDES (PAMS) AND FLOCCULANTS
1. Select flocculants that are appropriate for the soils being exposed during
construction, selecting from the NC DWR List of Approved PAMS/Flocculants.
2. Apply flocculants at or before the inlets to Erosion and Sediment Control Measures.
3. Apply flocculants at the concentrations specified in the NC DWR List of Approved
PAMS/Flocculants and in accordance with the manufacturer's instructions.
4. Provide pending area for containment of treated Stormwater before discharging
offsite.
5. Store flocculants in leak -proof containers that are kept under storm -resistant cover
or surrounded by secondary containment structures.
EQUIPMENT AND VEHICLE MAINTENANCE
1. Maintain vehicles and equipment to prevent discharge of fluids.
2. Provide drip pans under any stored equipment.
3. Identify leaks and repair as soon as feasible, or remove leaking equipment from the
project.
4. Collect all spent fluids, store in separate containers and properly dispose as
hazardous waste (recycle when possible).
5. Remove leaking vehicles and construction equipment from service until the problem
has been corrected.
6. Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products
to a recycling or disposal center that handles these materials.
LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
1. Never bury or burn waste. Place litter and debris in approved waste containers.
2. Provide a sufficient number and size of waste containers (e.g dumpster, trash
receptacle) on site to contain construction and domestic wastes.
3. Locate waste containers at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
4. Locate waste containers on areas that do not receive substantial amounts of runoff
from upland areas and does not drain directly to a storm drain, stream or wetland.
5. Cover waste containers at the end of each workday and before storm events or
provide secondary containment. Repair or replace damaged waste containers.
6. Anchor all lightweight items in waste containers during times of high winds.
7. Empty waste containers as needed to prevent overflow. Clean up immediately if
containers overflow.
8. Dispose waste off -site at an approved disposal facility.
9. On business days, clean up and dispose of waste in designated waste containers.
PAINT AND OTHER LIQUID WASTE
1. Do not dump paint and other liquid waste into storm drains, streams or wetlands.
2. Locate paint washouts at least 50 feet away from storm drain inlets and surface
waters unless no other alternatives are reasonably available.
3. Contain liquid wastes in a controlled area.
4. Containment must be labeled, sized and placed appropriately for the needs of site.
5. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from
construction sites.
PORTABLE TOILETS
1. Install portable toilets on level ground, at least 50 feet away from storm drains,
streams or wetlands unless there is no alternative reasonably available. If 50 foot
offset is not attainable, provide relocation of portable toilet behind silt fence or place
on a gravel pad and surround with sand bags.
2. Provide staking or anchoring of portable toilets during periods of high winds or in high
foot traffic areas.
3. Monitor portable toilets for leaking and properly dispose of any leaked material.
Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace
with properly operating unit.
EARTHEN STOCKPILE MANAGEMENT
1. Show stockpile locations on plans. Locate earthen -material stockpile areas at least
50 feet away from storm drain inlets, sediment basins, perimeter sediment controls
and surface waters unless it can be shown no other alternatives are reasonably
available.
2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of
five feet from the toe of stockpile.
3. Provide stable stone access point when feasible.
4. Stabilize stockpile within the timeframes provided on this sheet and in accordance
with the approved plan and any additional requirements. Soil stabilization is defined
as vegetative, physical or chemical coverage techniques that will restrain accelerated
erosion on disturbed soils for temporary or permanent control needs.
NORTH CAROLINA
Environmental Quality
ONSITE CONCRETE WASHOUT
STRUCTURE WITH LINER
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BELOW GRADE 4ASPT� ABOVE GRA & 46MDT�STRUCTURE
CONCRETE WASHOUTS
1. Do not discharge concrete or cement slurry from the site.
2. Dispose of, or recycle settled, hardened concrete residue in accordance with local
and state solid waste regulations and at an approved facility.
3. Manage washout from mortar mixers in accordance with the above item and in
addition place the mixer and associated materials on impervious barrier and within
lot perimeter silt fence.
4. Install temporary concrete washouts per local requirements, where applicable. If an
alternate method or product is to be used, contact your approval authority for
review and approval. If local standard details are not available, use one of the two
types of temporary concrete washouts provided on this detail.
5. Do not use concrete washouts for dewatering or storing defective curb or sidewalk
sections. Stormwater accumulated within the washout may not be pumped into or
discharged to the storm drain system or receiving surface waters. Liquid waste must
be pumped out and removed from project.
6. Locate washouts at [east 50 feet from storm drain inlets and surface waters unless it
can be shown that no other alternatives are reasonably available. At a minimum,
install protection of storm drain inlet(s) closest to the washout which could receive
spills or overflow.
7. Locate washouts in an easily accessible area, on level ground and install a stone
entrance pad in front of the washout. Additional controls may be required by the
approving authority.
8. Install at least one sign directing concrete trucks to the washout within the project
limits. Post signage on the washout itself to identify this location.
9. Remove leavings from the washout when at approximately 75% capacity to limit
overflow events. Replace the tarp, sand bags or other temporary structural
components when no longer functional. When utilizing alternative or proprietary
products, follow manufacturer's instructions.
10. At the completion of the concrete work, remove remaining leavings and dispose of
in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance
caused by removal of washout.
HERBICIDES, PESTICIDES AND RODENTICIDES
1. Store and apply herbicides, pesticides and rodenticides in accordance with label
restrictions.
2. Store herbicides, pesticides and rodenticides in their original containers with the
label, which lists directions for use, ingredients and first aid steps in case of
accidental poisoning.
3. Do not store herbicides, pesticides and rodenticides in areas where flooding is
possible or where they may spill or leak into wells, stormwater drains, ground water
or surface water. If a spill occurs, clean area immediately.
4. Do not stockpile these materials onsite.
HAZARDOUS AND TOXIC WASTE
1. Create designated hazardous waste collection areas on -site.
2. Place hazardous waste containers under cover or in secondary containment.
3. Do not store hazardous chemicals, drums or bagged materials directly on the ground.
NCGO1 GROUND STABILIZATION AND MATERIALS HANDLING
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION A: SELF -INSPECTION
Self -inspections are required during normal business hours in accordance with the table
below. When adverse weather or site conditions would cause the safety of the inspection
personnel to be in jeopardy, the inspection may be delayed until the next business day on
which it is safe to perform the inspection. In addition, when a storm event of equal to or
greater than 1.0 inch occurs outside of normal business hours, the self -inspection shall be
performed upon the commencement of the next business day. Any time when inspections
were delayed shall be noted in the Inspection Record.
Frequency
Inspect (during normal
Inspection records must include:
business hours)
(1) Rain gauge
Daily
Daily rainfall amounts.
maintained in
If no daily rain gauge observations are made during weekend or
good working
holiday periods, and no individual -day rainfall information is
order
available, record the cumulative rain measurement for those un-
attended days (ane this will determine if a site inspection is
needed). Days on which no rainfall occurred shall be recorded as
"zero." The permittee may use another rain -monitoring device
approved by the Division.
(2) E&SC
At least once per
1. Identification of the measures inspected,
Measures
7 calendar days
2. Date and time of the inspection,
and within 24
3. Name of the person performing the inspection,
hours of a rain
4. Indication of whether the measures were operating
event > 1.0 inch in
properly,
24 hours
5. Description of maintenance needs for the measure,
6. Description, evidence, and date of corrective actions taken.
(3) Stormwater
At least once per
1. Identification of the discharge outfalls inspected,
discharge
7 calendar days
2. Date and time of the inspection,
outfalls (SDCs)
and within 24
3. Name of the person performing the inspection,
hours of a rain
4. Evidence of indicators of Stormwater pollution such as oil
event > 1.0 inch in
sheen, floating or suspended solids or discoloration,
24 hours
5. Indication of visible sediment leaving the site
6. Description, evidence, and date of corrective actions taken.
(4) Perimeter of
At least once per
If visible sedimentation is found outside site limits, then a record
site
7 calendar days
of the following shall be made:
and within 24
1. Actions taken to clean up or stabilize the sediment that has left
hours of a rain
the site limits,
event > 1.0 inch in
2. Description, evidence, and date of corrective actions taken, and
24 hours
3. An explanation as to the actions taken to control future
releases.
(5) Streams or
At least once per
If the stream or wetland has increased visible sedimentation or a
wetlands onsite
7 calendar days
stream has visible increased turbidity from the construction
or offsite
and within 24
activity, then a record of the following shall be made:
(where
hours of a rain
1. Description, evidence and date of corrective actions taken, and
accessible)
event > 1.0 inch in
2. Records of the required reports to the appropriate Division
24 hours
Regional Office per Part III, Section C, Item (2)(a) of this permit.
(6) Ground After each phase
1. The phase of grading (installation of perimeter E&SC
stabilization of grading
measures, clearing and grubbing, installation of storm
measures
drainage facilities, completion of all land -disturbing
activity, construction or redevelopment, permanent
ground cover).
2. Documentation that the required ground stabilization
measures have been provided within the required
timeframe or an assurance that they will be provided as
soon as possible.
NOTE: The rain inspection resets the required 7 calendar day inspection requirement.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION B: RECORDKEEPING
1. E&SC Plan Documentation
The approved E&SC plan as well as any approved deviation shall be kept on the site. The
approved E&SC plan must be kept up-to-date throughout the coverage under this permit.
The following items pertaining to the E&SC plan shall be kept on site and available for
inspection at all times during normal business hours.
Item to Document
Documentation Requirements
(a) Each E&SC measure has been installed
Initial and date each E&SC measure on a copy
and does not significantly deviate from the
of the approved E&SC plan or complete, date
locations, dimensions and relative elevations
and sign an inspection report that lists each
shown on the approved E&SC plan.
E&SC measure shown on the approved E&SC
plan. This documentation is required upon the
initial installation of the E&SC measures or if
the E&SC measures are modified after initial
installation.
(b) A phase of grading has been completed.
Initial and date a copy of the approved E&SC
plan or complete, date and sign an inspection
report to indicate completion of the
construction phase.
(c) Ground cover is located and installed
Initial and date a copy of the approved E&SC
in accordance with the approved E&SC
plan or complete, date and sign an inspection
plan.
report to indicate compliance with approved
ground cover specifications.
(d) The maintenance and repair
Complete, date and sign an inspection report.
requirements for all E&SC measures
have been performed.
(e) Corrective actions have been taken
Initial and date a copy of the approved E&SC
to E&SC measures.
plan or complete, date and sign an inspection
report to indicate the completion of the
corrective action.
2. Additional Documentation to be Kept on Site
In addition to the E&SC plan documents above, the following items shall be kept on the
site and available for inspectors at all times during normal business hours, unless the
Division provides a site -specific exemption based on unique site conditions that make
this requirement not practical:
(a) This General Permit as well as the Certificate of Coverage, after it is received.
(b) Records of inspections made during the previous twelve months. The permittee shall
record the required observations on the Inspection Record Form provided by the
Division or a similar inspection form that includes all the required elements. Use of
electronically -available records in lieu of the required paper copies will be allowed if
shown to provide equal access and utility as the hard -copy records.
3. Documentation to be Retained for Three Years
All data used to complete the e-NOI and all inspection records shall be maintained for a period
of three years after project completion and made available upon request. [40 CFR 122.41]
PART II, SECTION G, ITEM (4)
DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT
Sediment basins and traps that receive runoff from drainage areas of one acre or more shall use outlet structures that withdraw water from the surface when these devices need to be drawn down
for maintenance or close out unless this is infeasible. The circumstances in which it is not feasible to withdraw water from the surface shall be rare (for example, times with extended cold weather).
Non -surface withdrawals from sediment basins shall be allowed only when all of the following criteria have been met:
(a) The E&SC plan authority has been provided with documentation of the non -surface withdrawal and the specific time periods or conditions in which it will occur. The non -surface withdrawal
shall not commence until the E&SC plan authority has approved these items,
(b) The non -surface withdrawal has been reported as an anticipated bypass in accordance with Part III, Section C, Item (2)(c) and (d) of this permit,
(c) Dewatering discharges are treated with controls to minimize discharges of pollutants from Stormwater that is removed from the sediment basin. Examples of appropriate controls include
properly sited, designed and maintained dewatering tanks, weir tanks, and filtration systems,
(d) Vegetated, upland areas of the sites or a properly designed stone pad is used to the extent feasible at the outlet of the dewatering treatment devices described in Item (c) above,
(e) Velocity dissipation devices such as check dams, sediment traps, and riprap are provided at the discharge points of all dewatering devices, and
(f) Sediment removed from the dewatering treatment devices described in Item (c) above is disposed of in a manner that does not cause deposition of sediment into waters of the United States.
EFFECTIVE: 04/01 / 19
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION C: REPORTING
1. Occurrences that Must be Reported
Permittees shall report the following occurrences:
(a) Visible sediment deposition in a stream or wetland.
(b) Oil spills if:
• They are 25 gallons or more,
• They are less than 25 gallons but cannot be cleaned up within 24 hours,
• They cause sheen on surface waters (regardless of volume), or
• They are within 100 feet of surface waters (regardless of volume).
(c) Releases of hazardous substances in excess of reportable quantities under Section 311
of the Clean Water Act (Ref: 40 CFR 110.3 and 40 CFR 117.3) or Section 102 of CERCLA
(Ref: 40 CFR 302.4) or G.S. 143-215.85.
(d) Anticipated bypasses and unanticipated bypasses.
(e) Noncompliance with the conditions of this permit that may endanger health or the
environment.
2. Reporting Timeframes and Other Requirements
After a permittee becomes aware of an occurrence that must be reported, he shall contact
the appropriate Division regional office within the timeframes and in accordance with the
other requirements listed below. Occurrences outside normal business hours may also be
reported to the Department's Environmental Emergency Center personnel at (800)
858-0368.
Occurrence
Reporting Timeframes (After Discovery) and Other Requirements
(a) Visible sediment
• Within 24 hours, an oral or electronic notification.
deposition in a
• Within 7 calendar days, a report that contains a description of the
stream or wetland
sediment and actions taken to address the cause of the deposition.
Division staff may waive the requirement for a written report on a
case -by -case basis.
• If the stream is named on the NC 303(d) list as impaired for sediment -
related causes, the permittee may be required to perform additional
monitoring, inspections or apply more stringent practices if staff
determine that additional requirements are needed to assure compliance
with the federal or state impaired -waters conditions.
(b) Oil spills and
• Within 24 hours, an oral or electronic notification. The notification
release of
shall include information about the date, time, nature, volume and
hazardous
location of the spill or release.
substances per Item
1(b)-(c) above
(c) Anticipated
• A report at least ten days before the date of the bypass, if possible.
bypasses [40 CFR
The report shall include an evaluation of the anticipated quality and
122.41(m)(3)]
effect of the bypass.
(d) Unanticipated
• Within 24 hours, an oral or electronic notification.
bypasses [40 CFR
• Within 7 calendar days, a report that includes an evaluation of the
122.41(m)(3)]
quality and effect ofthe bypass.
(e) Noncompliance
• Within 24 hours, an oral or electronic notification.
with the conditions
• Within 7 calendar days, a report that contains a description of the
of this permit that
noncompliance, and its causes; the period of noncompliance,
may endanger
including exact dates and times, and if the noncompliance has not
health or the
been corrected, the anticipated time noncompliance is expected to
environment[40
continue; and steps taken or planned to reduce, eliminate, and
CFR 122.41(I)(7)]
prevent reoccurrence of the noncompliance. [40 CFR 122.41(I)(6).
• Division staff may waive the requirement for a written report on a
case -by -case basis.
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NCGO1 SELF -INSPECTION, RECORDKEEPING AND REPORTING EFFECTIVE: 04/01/19I
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