warren erosion control plan r09 COMPLETE

OWNER/OPERATOR:
McCARTHY IMPROVEMENT COMPANY
590 MEANS STREET NW, SUITE 100
ATLANTA, GEORGIA 30318
PHONE: [phone]
FAX: [phone]
TOPOGRAPHIC MAP
y ,
RECEIVING WA TERS: , f
SMITH CREEK,
' ° f ROANOKE RIVER
BASIN
;r `SITE I
lkR
111 -
til' A
NORTH"
0 0.4
Mite
M cl McCARTHY
J IMPROVEMENT
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ray � i
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OUTFALL`4',
COORDINATES: II _
3602725.74"N 4
N
78015'53.99"'W
l rk•
_. l r ,
_ I
SCALE
4 �
I
'tel i
.. CLrn �.
SOURCE: USGS 7.5 MINUTE TOPOGRAPHIC SERIES QUADRANGLE MAP:
MIDDLEBURG, NC (9970)
VICINITYMAP
RECEIVING WATERS:
- SMITH CREEK,
ROANOKE RIVER
BASIN
SITE
RIDGEWAY-DREWRY ROAD
OUTFALL
COORDINATES:
EXIT 226 36027'25.74"N
78015'53.99"W
NORTH
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p 0.4 0� 0
Mite Of
SCALE
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24 HOUR CONTACT:
KEVIN CRUSA
McCARTHY IMPROVEMENT CO.
[phone]
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-
McCARTHYIMPROVEMENT
WARREN COUNTY
CONCRETE PLANT
EROSION & SEDIMENTATION CONTROL PLAN
SITE
1224 RIDGEWAY-DREWRY ROAD
PHYSICAL
MANSON, NORTH CAROLINA 27563
ADDRESS: NUTBUSH TOWNSHIP, WARREN COUNTY, NC
PARCEL IDENTIFICATION NUMBER 2918557902
FW 1 in M S I on
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Existing and Proposed Land Use: The 4.39 acre parcel is open pasture. McCarthy Improvement Company is leasing the parcel. The proposed facility
is a temporary concrete batch plant that will be located near the center of the parcel. The concrete batch plant is being installed to provide concrete for
a repaving project on the adjacent Interstate Highway 85.
Receiving Waters: The receiving waters for this site are the waters of Smith Creek in the Roanoke River Basin. The Stream Index for Smith Creek is
23-10a and the classification is "C" The stream is listed on the 2014 Category 5 Water Quality Assessments 303(d) list, with an Assessment Criteria
Status Exceeding Criiteria, Parameter of Interest Benthos Fair (Nar, AL, FW) .
Wetlands: No Wetlands are located on the site.
High Water Quality Zone: The site is not located within a High Water Quality Zone.
Flood Zone: Warren County Flood Map No. 3720290800) effective April 16, 2007 shows the subject property in the FloodZone X- Minima/ Flood Risk.
Zoning: Warren County has not zoned the subject property.
TABLE OF CONTENTS
SHEET # NAME
C.001 EXISTING SITE CONDITIONS
C.101 EROSION & SEDIMENT CONTROL
C.102 FINAL PHASE
C.103 FINAL GRADING
C.401 EROSION CONTROL NOTES
C.402 EROSION CONTROL NOTES
C.501 BMP DETAILS
C.502 BMP DETAILS
Construction Sequence
I.
Obtain E & SC Plan approval
2.
Flamm work limits
3.
;Contact NC DEMLR at least 48 hours before beginning land -disturbing activities
4.
Install perimeter control (silt fence)
5.
Install construction entrance and two culverts with inlet and outlet protection
6.
Install sediment basin as first construction activity
7.
Install surface skimmer and outlet
8.
Construct temporary diversions and install turf reinforcement mats and liners
9.
Grade site within disturbed area limits
10.
Install concrete washout structure and establish staging areas
11.
Within 7 days install aggregate cover on all surfaces delineated as requiring stabilization
within 7 days
72
Within 7 days install temporary and/or permanent vegetation on all surfaces not covered 3
with aggregate and delineated as requiring stabilization within 7 days
13.
All erosion and sediment control practices will be inspected weekly and after rainfall events
14.
All erosion and sediment control practices will be maintained for the duration of the�pro "ect
15.
' At conclusion of paving project, remove concrete plant and all plant -related equipment
16.
Remove graded aggregate base from plant area, access road, and other parts of site
17.
Regrade site - remove diversions, berms, & swales, skimmer pond, and Culvert 1
18.
Immediately following regrading, install RECD/liner in area formerly occupied by Culvert 1
19.
Immediately following regrading, seed all disturbed areas with permanent vegetation
20.
Remove silt fence, construction entrance, and Culvert 2
21.
Install RECD/liner in area formerly occupied by Culvert 2.
TiRRA
CONSUL TIN67
TERRA CONSULTING, LLC
P.O. BOX 1738
CARROLL TON, GA 30112
[phone]
www. terraconsu/tin 11c. Coln
Storm Water Discharge Data
Total parcel area
4.39 A
Drainage Area I
Pre -development drainage area on parcel
3.01 A
Total pre -development drainage area on parcel
3.01A
Pre -development Q to
19.74 cfs
Post -development drainage area on parcel
3.59 A
Post -development drainage area
2.71 A
Post -development disturbed area
3.43 A
Peak flow into skimmer basin
18.36 cfs
Basin discharge - skimmer Q 90 (flow)
0.02 cfs
Basin discharge - spillway Q 90 (flow)
8.72 cfs
Basin discharge skimmer Q 90 (velocity)
0.49 ft/sec
-
Basin discharge spillway Q 90 (velocity)
1.72 ft/sec
Basin length at spillway
130 ft
Basin width at spillway
64 ft
Basin depth at spillway
3.5 ft
Basin inside side slope ratio
2:1
Spillway elevation
333.5
Spillway width
8 ft
Spillway length horizontalportion)
11 ft
Spillway length (sloped portion of berm
16 ft
Spillway depth
1.5 ft
Spillway slope (discharge side
3:1
Max depth of flow over spillway Q io
0.46 ft
Skimmer size
1.5 in
Skimmer orifice
1.5 in
De watering time for required volume
3.36 daVs
Post -development area of b - ass
0.88A
By-pass area Q 90
3.92 cfs
Drainage Area 2
Pre-deve% ment drainage area on parcel
1.38A
Total pre -development draina e area on parcel
2.54 A
Pre -development Q 90
2.38 cfs
Post -development drainage area on parcel
0.80A
Totalpost-deve% ment drainage area
2.07A
Post -development disturbed area
0.51 A
Post -development Q 90
3.75 cfs
REVISIONS
6/96/97 - Construction Sequence
Table of Contents amended.

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Receiving Waters:
Contact DEMLR Raleigh Regional Office at least
24 HOUR CONTACT:
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The receiving waters for this site are the waters
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24 hours prior to commencing land disturbing
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KEVIN CRUSA
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IMPROVEMENT CO.
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activities. DEMLR contact number: (919) 79'-4200
[phone]
Smith Creek is listed as an impaired stream on
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the current 303d list.
Smith Creek is classified "C. "
a
TMDL:
N/F
The receiving waters for this site do not have
SU N HARRIS ES.
PAN 2918675106
an approved TMDL.
NO REF. FOUND
FEMA Flood Hazard Zones:---'''
This site is not located within a FEMA Flood
PROPERTY BOUNDARY
-----------_ - -- ` �' PROPERTY BOUNDARY
EIR / / — '� / / / ' `\ �\ \\ \\ \ \ I / / '1 \ /11,
------
Hazard Zone.
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Array Corps ofEngineers 404 Permit
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This site does not require an Army Corps of
DIRT �'-'-,,--___l -_-
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Engineers 404 permit.
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NC
NC DEQ 401 Certification
N/F
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1\No
Water Quality 401 Certification is required
PIN 2918675106
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for this site.
NO REF. FOUND
\ \ `\ \ \ \ \
EXTENT OP -GRADING (FROM ADJACENT PROKRTY)
i EXISTING SILT FENCE
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` \ \ \ \ `— PROPERTY BOUNDARY
Leaks or Spills:
There have been no significant leaks or spills at
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this site in the last three years.
Easements:
There are no known easements on this site.
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4.381 Acres
DRAINAGEAREAI:
PROPERTY- OWNERS:
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NATHANIEL A. CANNADY l ; ; / BAS1N 4REA - 3.OfACRES ;
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MONUMENT
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RALEIGH, 27603
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PROPERTY BOUNDARY
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1 PIN = 2918P57902
DEED BK. 3 7, PG. 30
CP
PROPERTY BOUNDARY
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PROPERTY BOUNDARY
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PROPERTY BOUNDARY
Soil Type Present on Site:
— ARE HyDR \ GUY LINES i `,\�
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TER
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Pacolet sandy clay loam, 2 to 8 percent slopes,
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moderately eroded. No special characteristics.
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B. McKISSICK, Jr.
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2918555752 I ;
554, PG. 473
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SUA'D
BENT EIR
HEADWALL
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YARD INLET
\ i GRATE=344.57
NV= 340.68
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PROPERTY BOUNDARY
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Scale: I"= 30'
THIS SITE IS NOT
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Con�vur Interval - 1 foot
L OCA TED WITHIN A FEMA
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FL 0 O HAZARD ZONE
Surface water flow direction
LEGEND:
EIP = EXISTING IRON PIPE
�e Pre -development
Site Stabilization:
=
EIR = EXISTING IRON ROD
e0 drainage basin boundary
Disturbed areas will be stabilized within
IRS IRON ROD SET
MAG = MAG NAIL
fourteen working days for slopes 3:1 or
CP = COMPUTER PT. (NOTHING SET)
less and within 7 working days on slopes
MON = CONCRETE R/W MONUMENT
Topographic Survey:
steeper than 3: 1.
Drainage Area 1: Pre-
Pennons Associates, Inc.
Development Basin: 3.01 Acres
O
401 Providence Road #200
Exceptions to the 14/7 rule above include
Drainage Area 2: Pre-
Chapel Hill, NC 27514
the following areas, which must be
Development Basin: 1.38 Acres
919-929-1173
stabilized within 7 days: All perimeter
April 2017
dikes, swales, ditches, and perimeter
slopes and all slopes that are longer than
50 feet.
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Receiving Waters:
The receiving waters for this site are the waters
of Smith Creek.
Smith Creek is listed as an impaired stream on
the current 303d list.
Smith Creek is classified "C. "
TMDL:
The receiving waters for this site do not have
an approved TMDL.
FEMA Flood Hazard Zones:
This site is not located within a FEMA Flood
Hazard Zone.
Array Corps ofEngineers 404 Permit
This site does not require an Army Corps of
Engineers 404 permit.
NC DEQ 401 Certification
No Water Quality 401 Certification is required
for this site.
Leaks or Spills:
There have been no significant leaks or spills at
this site in the last three years.
Easements:
There are no known easements on this site.
Contact DEMLR Raleigh Regional Office at least
24 hours prior to commencing land disturbing
activities. DEMLR contact number: (919) 79'-4200
1,000 GALLON SEDIMENTFENCE
DOUBLE -WALLED SEDIMENT FENCE (see detail on
PORTABLE DIESEL,_ (see detail on
----� � Sheet C.501) Sheet C.501)
�sr� ----_EUEL TANK- �i�' LIMIT OF DISTURBED AREA I
l
PROPERTY BOUNDARY moi_ — _ _— __ _ 1 I 1 1 r , r PROPERTY BOUNDARY LIMIT OF DISTURBED
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SANITARY i �i i I,i r \ < < \ \ AREA
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WASTE UN TS
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SEDIMENT FENCE ' / > `� �I� EXISTING DIRT STOCKPILE / 1 I I �' WASTE \ ` \\\ \ PS ��� \\ SKIMMER
See detail on / � 1v` ` v _ ----- / �/ / I vv v3
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Sheet C.501 /:.:: ::'::'::::::::: •-----____ ' \\ �� `\ Sheet C. 50 1)
/ \ \----- _� ------
SEDIMENT FENCE
(see detail on
Sheet C. 50 1)
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see detail on
SEDIMENT FENCEV' 1O SEDIMENT FENCE
344Sheet C.501)
UTLET see
detail on
OTECTION / (see detail on
P.//see detail on I \I / Sheet/C.501)\\ G / / Sheet C.501)
d �PROPERTYBOUNDARY l \ r i
1' RELOCATED FIRE` HYDRANT
_ Sheet C.501) &WATER VALVE (ASSUMED
LOCATION) r' LIMIT OF DISTURBED AREA /
C U LV P S / LIMIT OF DISTURBED AREA
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INVERT... /
INLET -HEADWALL
HEADWALL
INV.=341.78
PROTECTION .344.0
(see detail on - - _ GRAYARDTEINLET
344.57 PROPERTY BOUNDARY
Sheet C. 502)
N V= 340.68
Site Stabilization:
Disturbed areas will be stabilized within
fourteen working days for slopes 3:1 or
less and within 7 working days on slopes
steeper than 3: 9.
Exceptions to the 94/7 rule above include
the following areas, which must be
stabilized within 7 days: All perimeter
dikes, swales, ditches, and perimeter
slopes and all slopes that are longer than
50 feet.
\ AREA OF
SKIMMER BASIN -
• 8,320 SQ FT
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\ / /
/
-- j
/INLET
P c -'PROTECTION
�7 (see detail on
/ Sheet C. 50 1)
LIMIT OF DISTURBED AREA
'PROPERTY BOUNDARY
OUTLET
(see detail on' \
Sheet C.�501) `\
\
24 HOUR CONTACT:
KEVIN CRUSA
McCARTHY IMPROVEMENT CO.
[phone]
\\ �\ 6hgT OF b15TUR§E-D_IRE:4
\ o PS
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SIS MME'R BASIM\
SPILL U1(A Y \
see deta% on
\ Sheet C.501- 1 / �PROPERTYBOUNDARY
-j OUTLET
PROTECTION
(see detail on
D Sheet C.501)
OFD/STURBED AREA
SEDIMENT FENCE
(see detail on
Sheet C. 50 1)
North Carolina Ground Cover Requirements:
The angle for graded slopes and fills shall be no
greater than the angle that can be retained by
vegetative cover or other adequate erosion -control
devices or structures. In any event, slopes left exposed
will, within 7 or 94 calendar days of completion of any
phase of grading, be planted or otherwise provided with
temporary ground cover, devices or structures sufficient
to restrain erosion. Permanent groundcover will be
provided for all disturbed areas within 95 working days
or no more than 90 calendar days (whichever is shorter)
following completion of construction.
�', 0 60 120 180 FT
FA
Scale: ' " = 30'
FA F
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Fo lklD � /�)o�
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Acreage Determinations:
Disturbed area, drainage basin, and
permanent vegetation area acreage
determinations were made using drafting
software calculations, based on the
topographic survey provided by Pennoni
Associates, Inc.
Drainage Area 9 Post-
Drainage Area 2 Post -
Development Basin Area:
Development Basin Area:
2.79 Acres
0.80 Acres
Drainage Area 9 Disturbed
Drainage Area 2 Disturbed
Area: 3.43 Acres
Area: 0.59 Acres
Total site area to be permanently vegetated: 9.46 Acres
Contour Interval - 9 foot
Proposed Contours in
BL UE
Topographic Survey:
Pennoni Associates, Inc.
409 Providence Road #200
Chapel Hill, NC 27514
919-929-1173
April 2017
SYMBOLS USED
°.,
Site boundary
V N
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Disturbed area boundary
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Postdevelopment
drainage basin boundary
Surface water flow direction
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Existing contour
Z
Proposed contour
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Security fence
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Sediment fence
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Existing asphalt road
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Gravel surface
Building/structure
aConcrete
surface
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Rlprap surface
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Turf Reinforcement Mats
RECP/Liner
Disturbed area requiring
on
stabilization within 7 days
lP S
Permanent seeding
C, Q
Construction entrance
P
Inlet protection
C W
Concrete washout structure
N
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Rip -rap surface
OMulch
- graded
GAB
aggregate base
Compost sock check dam
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Receiving Waters:
The receiving waters for this site are the waters
of Smith Creek.
Smith Creek is listed as an impaired stream on
the current 303d list.
Smith Creek is classified "C. "
TMDL:
The receiving waters for this site do not have
an approved TMDL.
FEMA Flood Hazard Zones:
This site is not located within a FEMA Flood
Hazard Zone.
Array Corps ofEngineers 404 Permit
This site does not require an Army Corps of
Engineers 404 permit.
NC DEQ 401 Certification
No Water Quality 401 Certification is required
for this site.
Leaks or Spills:
There have been no significant leaks or spills at
this site in the last three years.
Easements:
There are no known easements on this site.
Contact DEMLR Raleigh Regional Office at least
24 hours prior to commencing land disturbing
activities. DEMLR contact number: (919) 79'-4200
1,000 GALLON SEDIMENTFENCE
DOUBLE -WALLED (see detail on
PORTABLE DIESEL. � Sheet C. 50 1)
�sr� ,----- EUEL.TANK- i�' _ L/M_/T__O_F_D/S_TURBEDAREA
PROPERTY BOUNDARY
I
/ ---- SANITARY i/ i i ---------- -- --------------( I \
/ / /"
WASTE U N TS I i it ��•� >i I I ( \ \\ �\ \\
SEDIMENT FENCE
(see detail on
Sheet,C.501)
PROPERTY BOUNDARY LIMIT OF DISTURBED
�Z AREA
—_ ! �,_ X iliiiiilil SOLID`S\
1 ' I I \ \ \ SKIMMER
SEDIMENT FENCE / � ' `� �.`� EXISTING DIRT STOCKPILE / „ WASTE `\ \\ PS \� `�
(see detail on \ O
Sheet C.501 / ` - -- __ -_-___------____-- _ � D \ \ `�� ,\\\ (see detail on
�) a - ----}------- , Sheet C.501)
\ \ \\ `� �\
SEDIMENT FENCE
(see detail on
Sheet,C.501)
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� INLET
PROTECTION /
see detail on
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PS
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] 20' X 20r
1 WASHOUT
WATER
RECYCLING
/ PITS
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VO (see detail on "'" ' """ " " '" '" '" l / i X_,
/ SEDIMENT FENCE
344. UTLET Sheet C.501) a,. OACRES SEDIMENT FENCE ` I ' /
/ , j / (s�e detail
on
N (see deiail on FSheet C.501)
Site Stabilization:
Disturbed areas will be stabilized within
fourteen working days for slopes 3:1 or
less and within 7 working days on slopes
steeper than 3: 9.
Exceptions to the 94/7 rule above include
the following areas, which must be
stabilized within 7 days: All perimeter
dikes, swales, ditches, and perimeter
slopes and all slopes that are longer than
50 feet.
ss� 6IQ A
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J O�
Acreage Determinations:
Disturbed area, drainage basin, and
permanent vegetation area acreage
determinations were made using drafting
software calculations, based on the
topographic survey provided by Pennoni
Associates, Inc.
Drainage Area 9 Post-
Drainage Area 2 Post -
Development Basin Area:
Development Basin Area:
2.79 Acres
0.80 Acres
Drainage Area 9 Disturbed
Drainage Area 2 Disturbed
Area: 3.43 Acres
Area: 0.59 Acres
Total site area to be permanently vegetated: 9.46 Acres
\ AREA OF
SKIMMER BASIN -
8,320 SQ FT
oF� , /
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/
INLET
-'PROTECTION
I (see detail on
Sheet C. 50 1)
/
/
LIMIT OF DISTURBED AREA
'PROPERTY BOUNDARY
OUTLET
(see detail on' ,
Sheet C.�501)
O►� \` O
V
24 HOUR CONTACT:
KEVIN CRUSA
McCARTHY IMPROVEMENT CO.
[phone]
6hgT OF URIRE:4
/
_ /
SK MME'R BASIM\
SPILL VVAY \ /
see deta% on
Sheet C. / �PROPERTYBOUNDARY
—j OUTLET
i
PROTECTION
(see detail on
D Sheet C.501)
OF DISTURBED AREA
SEDIMENT FENCE
(see detail on
Sheet C. 50 1)
North Carolina Ground Cover Requirements:
The angle for graded slopes and fills shall be no
greater than the angle that can be retained by
vegetative cover or other adequate erosion -control
devices or structures. In any event, slopes left exposed
will, within 7 or 94 calendar days of completion of any
phase of grading, be planted or otherwise provided with
temporary ground cover, devices or structures sufficient
to restrain erosion. Permanent groundcover will be
provided for all disturbed areas within 95 working days
or no more than 90 calendar days (whichever is shorter)
following completion of construction.
0 60 120 180 FT
Scale: ' " = 30'
Contour Interval - 9 foot
Proposed Contours in
BL UE
Topographic Survey:
Pennoni Associates, Inc.
® 409 Providence Road #200
Chapel Hill, NC 27514
919-929-1173
April 2017
SYMBOLS USED
V/
N O O Q
Z aco
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Receiving Waters:
The receiving waters for this site are the waters
of Smith Creek.
Smith Creek is listed as an impaired stream on
the current 303d list.
Smith Creek is classified "C. "
TMDL:
The receiving waters for this site do not have
an approved TMDL.
FEMA Flood Hazard Zones:
This site is not located within a FEMA Flood
Hazard Zone.
Contact DEMLR Raleigh Regional Office at least
24 hours prior to commencing land disturbing
activities. DEMLR contact number: (919) 79'-4200
SEDIMENT FENCE
(see detail on
--- Sheet C. 50 1)
24 HOUR CONTACT:
KEVIN CRUSA
McCARTHY IMPROVEMENT CO.
[phone]
- �\ I I11 1 I 1111 \ \ \ \\ S \\ \ \ \�\ - �� \ ` �1 I \
-- \ \ PROPERTY BOUNDARY
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PROPERTYBOUNDARY — — — — — — — — — — — —/
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PROPERTY BOUNDARY
SEDIMENT FENCE \\ � \\ \\ \ � \ \ \ \ \\ \\\ `` \ ��,� �`\ `• `\ '\\ \\\ \\\ \ \\ 1
(see detail on
Sheet C.509,)
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502)
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RELOCATED FIRE HYDRANT
& WATER VALVE (ASSUMED
.�
LOCATION)
HEADWALL
INV.=341.78
YARD INLET
PR0PFRTY RnUNnARY
Site Stabilization:
Disturbed areas will be stabilized within
fourteen working days for slopes 3:1 or
less and within 7 working days on slopes
steeper than 3: 9.
Exceptions to the 94/7 rule above include
the following areas, which must be
stabilized within 7 days: All perimeter
dikes, swales, ditches, and perimeter
slopes and all slopes that are longer than
50 feet.
722A�gO
Fp lk% 60/9
Acreage Determinations:
Disturbed area, drainage basin, and
permanent vegetation area acreage
determinations were made using drafting
software calculations, based on the
topographic survey provided by Pennoni
Associates, Inc.
Drainage Area 9 Post-
Drainage Area 2 Post -
Development Basin Area:
Development Basin Area:
2.79 Acres
0.80 Acres
Drainage Area 9 Disturbed
Drainage Area 2 Disturbed
Area: 3.43 Acres
Area: 0.59 Acres
Total site area to be permanently vegetated: 9.46 Acres
\\ moi/
/ PROPERTY BOUNDARY
/
North Carolina Ground Cover Requirements:
The angle for graded slopes and fills shall be no
greater than the angle that can be retained by
vegetative cover or other adequate erosion -control
devices or structures. In any event, slopes left exposed
will, within 7 or 94 calendar days of completion of any
phase of grading, be planted or otherwise provided with
temporary ground cover, devices or structures sufficient
to restrain erosion. Permanent groundcover will be
provided for all disturbed areas within 95 working days
or no more than 90 calendar days (whichever is shorter)
following completion of construction.
0 60 120 180 FT
Scale: ' " = 30'
Contour Interval - 9 foot
Proposed Contours in
BL UE
Topographic Survey:
Pennoni Associates, Inc.
® 409 Providence Road #200
Chapel Hill, NC 27514
919-929-1173
April 2017
-_1
SYMBOLS USED
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401.1 Sediment Fence (Silt Fence)
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24 HOUR CONTACT:
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KEVIN CRUSH
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Installation Specifications:
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McCARTHY IMPROVEMENT CO.
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Installation specifications:
1. The base of both end posts should be at least one foot higher than the middle of the fence.
[phone]
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Check with a level if necessary.
1. Compost sock check dams should be located as shown on the E&SC Plan.
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2. Install posts 4 feet apart in critical areas and 6 feet apart on standard applications.
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2. Compost sock check dams are to be place perpendicular to the flow in the channel at intervals
3. Install posts 2 feet deep on the downstream side of the silt fence, and as close as possible to
not to exceed 50 feet.
the fabric, enabling posts to support the fabric from upstream water pressure.
3. Prior to installation, clear all obstructions including rocks, clods, and other debris greater than
4. Install posts with the nipples facing away from the silt fabric.
Receiving Waters:
NC DEQ 401 Certification
one inch that may interfere with proper function of the compost sock.
5. Attach the fabric to each post with three ties, all spaced within the top 8 inches of the fabric.
The receiving waters for this site are the waters of Smith
No Water Quality 401 Certification is required for this site.
4. Oak or other durable hardwood stakes 2" X 2" in cross section should be driven vertically plumb,
Attach each tie diagonally 45 degrees through the fabric, with each puncture at least 1 inch
Creek in the Roanoke River Basin,
Leaks or Spills:
through the center of the compost sock. Stakes should be placed at the ends and the middle of
interval feet. The
vertically apart. Also, each tie should be positioned to hang on a post nipple when tightened to
the sock and additional stakes place to achieve a maximum of stakes
prevent Sagging.
Smith Creek is listed as an impaired stream on the current
There have been no significant leaks or spills at this site in the
should be driven to a minimum depth of 12 inches, with a minimum of 3 inches protruding
6. Wrap approximately 6 inches of fabric around the end posts and secure with 3 ties.
303d list, with an Assessment Criteria Status Exceeding
last three years.
above the compost sock.
7. No more than 24 inches of a 36 inch fabric is allowed above ground level.
Cr//ter/a, Parameter of Interest Benthos Fair (Nar, AL, FW).
Easements:
Maintenance:
8. The installation should be checked and corrected for any deviations before compaction.
TMDL:
There are no known easements on this site.
1. Inspect compost sock check dams at least once a week and after each rainfall. Remove any
9. Compaction is vitally important for effective results. Compact the soil immediately next to the silt
The receivingwaters for this site do not have an approved
Site Stabilization:
accumulated sediment and any debris immediately. Make any required repairs immediately.
fence fabric with the front wheel of the tractor, skid steer, or roller exerting at /east 60 pounds
per square inch. Compact the upstream side first, and then each side twice for a total of 4 trips.
TMDL.
Disturbed areas will be stabilized within 14 working days for slopes
2. The compost sock must be replaced if clogged or torn.
Maintenance:
Army Corps ofEngineers 404 Permit
3:1 or less and within 7 working days on slopes steeper than 3: 1.
3. if ponding becomes excessive the sock should be replaced.
1. Inspect sediment fences at least once a week and alter each rainfall. Make any required repairs
This site does not require an Army Corps of Engineers 404
immediately.
permit.
4. The sock must be reinstalled if undermined or dislodged.
2. Should the fabric of a sediment fence collapse, tear, decompose, or become ineffective, replace
it promptly.
401.9 Outlet Protection
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.
401.3 Skimmer Basin Inlet 401.5 Skimmer (continued)
Construction Specifications:
4. Remove all fencing materials and unstable sediment deposits and bring the area to grade and
Construction: Maintenance:
1. Construct the entire area of the spillway in undisturbed soil if possible. Make the cross section
stabilize it after the contributing drainage area has been properly stabilized.
trapezoidal with side slopes 3:1 or flatter.
1. Line the basin inlet with geotextile materials and cover with riprap. 1. If the skimmer is clogged with trash and there is water in the basin, usually jerking on the
401.2 Skimmer Basin
rope will make the skimmer bob up and down and dislodge the debris and restore flow. If
2. The inlet should be located the greatest distance possible from the discharge spillway.
2. The riprap and gravel filter must conform to the specified grading limits shown on the plans.
this does not work, pull the skimmer over to the side of the basin and remove the debris.
Construction Specifications:
Also check the orifice inside the skimmer to see if it is clogged; if so remove the debris.
Maintenance:
3. Filter cloth, when used, must meet design requirements and be properly protected from punching
or tearing during installation. Repair any damage by removing the riprap and placing another
1. Clear, grub, and strip the area under the embankment of a// vegetation and root mat. Remove a//
2. If the skimmer arm or barrel pipe is clogged, the orifice can be removed and the obstruction
piece of filter cloth over the damaged area. All connecting joints should overlap so the top layer
surface soil containinghigh amounts of organic matter and stockpile or dispose of itproperly.
9 9 p p
Inspect the basin inlet at least once per week and after each rainfall event. Repair geotextile if cleared with a plumbers snake or by flushing with water. Be sure and replace the orifice
is above the downstream layer a minimum of 1 foot. if the damage is extensive, replace the
Y 9 p
Haul all objectionable material to the designated disposal area. Place temporary sediment control
needed and replace riprap if needed to prevent erosion of basin bank. before repositioning the skimmer.
entire filter cloth.
measures be/ow basin as needed.
3. See more detailed maintenance instruction from the manufacturer.
2. Ensure that fill material for the embankment is free of roots, woody vegetation, organic matter,
401.4 Porous Baffles
4. Riprap maybe placed by equipment, but take care to avoid damaging the filter.
and other objectionable material. Place the fill in lifts not to exceed 9 inches, and machine
401.6 Skimmer Basin Spillway
Installations Specifications:
compact it. Over fill the embankment 6 inches to allow for settlement.
5. The minimum thickness of the riprap should be 1.5 times the maximum stone diameter.
1. Grade the basin so that the bottom is level front to back and side to side. Construction Specifications:
3. Shape the basin to the specified dimensions. Prevent the skimming device from settling into the
mud by excavating a shallow pit under the skimmer or providing a low support under the
2. Install the coir fiber baffles immediately upon excavation of the basins. 1. Install. spillway in undisturbed soil to the greatest extent possible.
6. Riprap may be field stone or rough quarry stone. It should be hard, angular, highly
skimmer of stone or timber.
3. Install posts across the width of the sediment trap (Practice 401.1, Sediment Fence) 2. The achievement of planned elevations, grade, design width, and entrance and exit channel
weather -resistant and well graded.
4. Place the barrel (typically 4 -inch Schedule 40 PVC pipe) on a firm, smooth foundation of
4. Steel posts should be driven to a depth of 24 inches and spaced a maximum of 4 feet apart. slopes are critical to the successful operation of the spillway.
7. Construct the apron on zero grade with no overfill at the end. Make the top of the riprap at the
impervious soil. Do not use pervious material such as sand, gravel, or crushed stone as backfill
The top of the fabric should be a minimum of 6 inches higher than the invert of the spillway. 3. The spillway should be lined with laminated plastic or impermeable geotextile fabric.
downstream end level with the receiving area or slightly below it.
around the pipe. Place the fill material around the pipe spillway in 4 -inch layers and compact it
Tops of baffles should be a minimum of 2 inches lower than the top of the earthen
under and around the pipe to at least the same density as the adjacent embankment. Care must
embankment. 4. The fabric must be wide and long enough to cover the bottom and sides and extend onto
8. Ensure that the apron is properly aligned with the receiving stream and preferably straight
be taken not to raise the pipe from the firm contact with its foundation when compacting under
the top of the dam for anchoring in a trench. The edges may be secured with 8 -inch
throughout its length. If a curve is needed to fit site conditions, place it in the upper section of
the pipe haunches.
5. Install at least three rows of baffles between the inlet and outlet discharge point. Basins less staples or pins. The width of the fabric must be one piece, not joined or spliced; otherwise
the apron.
Place a minimum depth of feet of compacted backfill over the pipe spillway before crossing it
than 20 feet in length may use 2 baffles. water can get under the fabric.
with construction equipment. In no case should the pipe conduit be installed by cutting a trench
6. Attach a 9 gauge high tension wire strand to the steel posts at a height of 6 inches above the
5. The fabric must be long enough to extend down the slope and exit onto stable ground. if
9. Immediate/ after construction stabilize all disturbed areas with vegetation. Practice 401.8
y g ( ,
through the dam after the embankment is complete.
spillway elevation with plastic ties or wire fasteners to prevent sagging. if the temporary
the length of the fabric is insufficient for the entire length of the spillway, multiple sections,
Vegetative Plan).
5. Assemble the skimmer following the manufacturer's instructions, oras designed.
sediment basin will be converted to a permanent storm water basin of a greater depth, the baffle
height should be based on the pool depth during use as a temporary sediment basin. spanning the complete width, maybe used. The upper section(s) should overlap the lower
Maintenance:
section(s) so that water cannot flow under the fabric.
6. Lay the assembled skimmer on the bottom of the basin with the flexible joint at the inlet of the
7. Extend 9 gauge minimum high tension wire strand to side of basin or install steel T -posts to
barrel pipe. Attach the flexible joint to the barrel pipe and position the skimmer over the
anchor baffle to side of basin and secure to vertical end posts as shown on Sheet C. 501. 6. Secure the upper edge and sides of the fabric in a trench with staples or pins.
Inspect riprap outlet structures weekly and after significant (1/2 inch or greater) rainfall events to
excavated pit or support. Be sure to attach a rope to the skimmer and anchor it to the side of
see if any erosion around or below the riprap has taken place, or if stones have been dislodged.
the basin. This will be used to pull the skimmer to the side for maintenance.
8. Drape the coir fiber mat over the wire strand mounted at a height of 6 inches above the spillway Maintenance:
Immediately make all needed repairs to prevent further damage.
7. Earthen spillways --Install the spillway in undisturbed soil to the greatest extent possible. The
elevation. Secure the coir fiber mat to the wire strand with plastic ties or wire fasteners. Anchor
the matting to the sides and floor of the basin with 12 inch wire staples, approximately 1 ft 1. Check the fabric lined spillway for damage and make any required repairs with fabric that
achievement of planned elevations, grade, design width, and entrance and exit channel slopes
apart, along the bottom and side slopes of the basin. spans the full width of the spillway. Check the embankment, spillways, and outlet for erosion
are critical to the successful operation of the spillway. The spillway should be lined with
damage, and inspect the embankment for piping and settlement. Make all necessary repairs
laminated plastic or impermeable geotextile fabric. The fabric must be wide and long enough to
9. Do not splice the fabric, but use a continuous piece across the basin. immediately. Remove all trash and other debris from the skimmer and pool areas.
cover the bottom and sides and extend onto the top of the dam for anchoring in a trench. The
10. Adjustments may be required in the stapling requirements to fit individual site conditions.
edges may be secured with 8 -inch staples or pins. The fabric must be long enough to extend
401.7 Temporary Diversion
down the slope and exit onto stable ground. The width of the fabric must be one piece, not
Maintenance:
joined or spliced; otherwise water can get under the fabric. /f the length of the fabric is
1. Inspect baffles at least once a week and after each rainfall. Make any required repairs Construction Specification:
insufficient for the entire length of the spillway, multiple sections, spanning the complete width,
immediately.
may be used. The upper section(s) should overlap the lower section(s) so that water cannot flow
under the fabric. Secure the upper edge and sides of the fabric in a trench with staples or pins.
2. Be sure to maintain access to the baffles. Should the fabric of a baffle collapse, tear, 1. Remove and properly dispose of all trees, brush, stumps, and other objectionable
decompose, or become ineffective, replace it promptly. material.
8. Erosion control --Construct the structure so that the disturbed area is minimized. Divert surface
water away from bare areas. Complete the embankment before the area is cleared. Stabilize the
3. Remove sediment deposits when it reaches half full, to provide adequate storage volume for the 2. Ensure that the minimum constructed cross section meets all design requirements.
emergency spillway embankment and all other disturbed areas above the crest of the principal
next rain and to reduce pressure on the baffles. Take care to avoid damaging the baffles during
spillway immediately after construction.
cleanout, and replace if damaged during cleanout operations. Sediment depth should never
3. Ensure that the top of the dike is not lower at any point than the design elevation plus the
9. Install porous baffles as specified in Practice 401.4, Porous Baffles.
exceed half the designed storage depth.
specified settlement.
4. After the contributing drainage area has been properly stabilized, remove all baffle materials and
10. After all the sediment -producing areas have been permanently stabilized, remove the
unstable sediment deposits, bring the area to rade, and stabilize it.
p g g 4. Provide sufficient room around diversions to permit machine regrading and cleanout
structure and all the unstable sediment. Smooth the area to blend with the adjoining areas and
stabilize properly
401.5 Skimmer 5. Stabilize the ridge with vegetation or aggregate immediately after construction, unless it will
Maintenance:
remain in place less than 30 working days.
1. Inspect skimmer sediment basins at least weekly and after each significant (one-half inch or
Installation Specification:
greater) rainfall event and repair immediately. Remove sediment and restore the basin to its
1. Prevent the skimming device from settling into the mud by excavating a shallow pit under the Maintenance:
original dimensions when sediment accumulates to one-half the height of the first baffle. Pull the
skimmer or providing a low support under the skimmer of stone or timber.
skimmer to one side so that the sediment underneath it can be excavated. Excavate the
1. Inspect temporary diversion at least once a week and alter each rainfall. Immediately
2. Place the barrel (typically 4 -inch Schedule 40 PVC pipe) on a firm, smooth foundation of
sediment from the entire basin, not just around the skimmer or the first cell. Make sure
remove sediment from the flow area and repair the diversion ridge.
impervious soil. The invert of the discharge pipe should be at the elevation of the bottom of the
vegetation growing in the bottom of the basin does not hold down the skimmer.
pond. Do not use pervious material such as sand, gravel, or crushed stone as backfill around
2. Repair the baffles if they are damaged. Re -anchor the baffles if water is flowing underneath or
the pipe. Place the fill material around the pipe spillway in 4 -inch layers and compact it under 2. Carefully check outlets and make timely repairs as needed.
around them.
and around the pipe to at least the same density as the adjacent embankment. Care must be
3. If the skimmer is clogged with trash and there is water in the basin, usually jerking on the rope
taken not to raise the pipe from the firm contact with its foundation when compacting under the
will make the skimmer bob up and down and dislodge the debris and restore flow. If this does
pipe haunches.
not work, pull the skimmer over to the side of the basin and remove the debris.
Place a minimum depth of 2 feet of compacted backfill over the pipe spillway before crossing it
4. Also check the orifice inside the skimmer to see if it is clogged; if so remove the debris.
with construction equipment. In no case should the pipe conduit be installed by cutting a trench
through the dam after the embankment is complete.
5. If the skimmer arm or barrel pipe is clogged, the orifice can be removed and the obstruction
3. Assemble the skimmer following the manufacturer's instructions, or as designed.
cleared with a plumber's snake or by flushing with water. Be sure and replace the orifice before
repositioning the skimmer.
4. Lay the assembled skimmer on the bottom of the basin with the flexible joint at the inlet of the
6. Check the fabric lined spillway for damage and make any required repairs with fabric that spans
barrel pipe. Attach the flexible joint to the barrel pipe and position the skimmer over the
the full width of the spillway. Check the embankment, spillways, and outlet for erosion damage,
excavated pit or support. Be sure to attach a rope to the skimmer and anchor it to the side of
and inspect the embankment for piping and settlement. Make all necessary repairs immediately.
the basin. This will be used to pull the skimmer to the side for maintenance.
Remove all trash and other debris from the skimmer and pool areas.
5. See more detailed installation instruction provided by the manufacturer.
7. Freezing weather can result in ice forming in the basin. Some special precautions should be
taken in the winter to prevent the skimmer from plugging with ice.
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401. 10 North Carolina Ground Cover Requirements
The angle for graded slopes and fills shall be no greater than the angle that can be retained by
vegetative cover or other adequate erosion -control devices or structures. In any event, slopes left
exposed will, within 7 or 14 calendar days of completion of any phase of grading, be planted or
otherwise provided with temporary ground cover, devises or structures sufficient to restrain erosion.
Permanent groundcover will be provided for all disturbed areas within 15 working days or no more
than 90 calendar days (whichever is shorter) following completion of construction
401.10a Vegetative Plan
Temporary Vegetation
Temporary vegetation will be seeded on all disturbed areas of the site not stabilized with aggregate (GAB)
or riprap.
Seedbed Preparation:
Seedbed should be well -pulverized, loose, and uniform. If hydraulic seeder is used the surface may be left
with a more irregular surface of large clodes and stones.
Lime:
Apply ground agricultural limestone at the rate listed below. Apply uniformly and incorporate into the top 4
to 6 inches of soil.
Fertilizer.•
Apply fertilizer at the rate listed below. Fertilizer should be incorporated into the top 4 to 6 inches of soil.
If hydraulic seeder is used, do not mix seed and fertilizer more than 30 minutes before application.
Seeding Method.
Use hydraulic seeding equipment to apply seed, fertilizer, wood fiber mulch at 45 lbs/9, 000 ft2, and a mulch
tackifer.
Temporary Seeding Mixture:
Seeding dates
Species
Seeding rate
Lime rate
Fertilizer (10-10-10) rate
January 1 to May 1
Rye (grain)
120 lb./acre
Eastern Bottlebrush
Grass
2.5 Ib./acre
Fox Sedge
Kobe
50 lb./acre
2, 000 lb./acre
750 lb./acre
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May 1 to August 15
German Millet
40 lb./acre
2, 000 lb./acre
7501b./acre
August 15 to
Rye (grain)
120 lb./acre
2, 000 lb./acre
1, 000 lb./acre
December 30
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Mulch:
Apply wood fiber mulch from hydraulic seeder at the rate of 45 pounds per 1, 000 ft2 except in diversion
swales where RECP liners and turf reinforcement mats are required. See Sheet C-101.
Maintenance:
Reseed, fertilize and mulch areas immediately following erosion or damage. Re -fertilized where growth is
not fully adequate. Do not mow. Protect from traffic as much as possible. Topdress Rye with 50 lb. /acre
of nitrogen in March.
Permanent Vegetation
Permanent vegetation will be seeded on all disturbed areas of the site not stabilized with aggregate (GAB)
or riprap. Disturbed area of the site that will be permanently vegetated is 1.46 A.
Seedbed Preparation:
1. All areas will be seeded with a hydraulic seeder.
2. Leave the last 4 to 6 inches of fill loose and uncompacted. Allow rocks, roots, large clods and other
debris to remain.
3. Roughen slope surfaces by making grooves 2 to 3 inches deep, perpendicular to the slope.
4. Spread lime evenly over the area as recommended by soil test.
Seeding Method.
Use hydraulic seeding equipment to apply seed, fertilizer, wood fiber mulch at 45 lbs/1, 000 ft2, and a mulch
tackifer.
Permanent Seeding Mixture:
Species
Seeding rate
Lime rate
Fertilizer (10-20-20) rate
Virginia Wild Rye
6 lb./acre
2, 000 lb./acre
40 Ib./acre
Eastern Bottlebrush
Grass
2.5 Ib./acre
Fox Sedge
2.5lb. /acre
Maintenance:
Re -fertilize in late winter or early spring the following year. Mow as desired.
Long-term maintenance to be provided by land owner
401.11 Construction Entrance (CO)
Construction Specifications:
1. Clear the entrance and exit area of all vegetation, roots, and other objectionable
materials and properly grade it.
2. Place the gravel to the specific grade and dimensions shown on the plan details on sheet C. 502,
and smooth it.
3. Provide drainage to carry water to a sediment trap or other suitable outlet.
4. Use geotextile fabrics because they improve stability of the foundation inlocations subject to seepage
or high water table. Refer to details on sheet C.502 for additional guidance.
Maintenance:
1. Maintain the gravel pad in a condition to prevent mud or sediment from leaving the construction
site. This may require periodic topdressing with 2 -inch stone.
2. After each rainfall, inspect any structures used to trap sediment and clean it out as necessary.
Immediately remove all objectionable materials spilled, washed, or tracked onto public roadways.
401.12 Concrete Washout (CW)
Construction Specifications:
1. Build an enclosed hay bale berm lined with 10 mil minimum plastic sheeting for an enclosure,
as detailed on sheet C. 501.
2. Post a sign with the words "Concrete Washout" within 30 feet of the concrete washout area.
Maintenance:
1. Maintain the concrete washout structure to provide adequate holding capacity plus a minimum
of 12 inches.
2. Remove and dispose of hardened concrete and return the structure to a functional condition
after reaching 75% capacity.
3. Inspect concrete washout structure for damage and maintain as needed.
4. Remove concrete washout structure and sign upon project completion.
24 HOUR CONTACT:
KEVIN CRUSA
McCARTHY IMPROVEMENT CO.
[phone]
Receiving Waters:
The receiving waters for this site are the waters of Smith
Creek in the Roanoke River Basin.
Smith Creek is listed as an impaired stream on the current
303d list, with an Assessment Criteria Status Exceeding
Criiteria, Parameter of Interest Benthos Fair (Nar, AL, FW).
TMDL:
The receiving waters for this site do not have an approved
TMDL.
Army Corps ofEngineers 404 Permit
This site does not require an Army Corps of Engineers 404
permit.
401.13 Inlet Protection (1P)
Construction Specifications:
1. Construct the entire area of the spillway in undisturbed soil if possible. Make the cross section
trapezoidal with side slopes 3:1 or flatter.
2. The riprap and gravel filter must conform to the specified grading limits shown on the plans.
3. Filter cloth, when used, must meet design requirements and be properly protected from punching
or tearing during installation. Repair any damage by removing the riprap and placing another
piece of filter cloth over the damaged area. All connecting joints should overlap so the top layer
is above the downstream layer a minimum of 1 foot. If the damage is extensive, replace the
entire filter cloth.
4. Riprap may be placed by equipment, but take care to avoid damaging the filter.
5. The minimum thickness of the riprap should be 1.5 times the maximum stone diameter.
6. Riprap may be field stone or rough quarry stone. It should be hard, angular, highly
weather -resistant and well graded.
7. Construct the apron on zero grade with no overfill at the end. Make the top of the riprap at the
downstream end level with the receiving area or slightly below it.
8. Ensure that the apron is properly aligned with the receiving stream and preferably straight
throughout its length. if a curve is needed to fit site conditions, place it in the upper section of
the apron.
9. Immediately after construction, stabilize all disturbed areas with vegetation. (Practice 401.8,
Vegetative Plan).
Maintenance:
Inspect riprap outlet structures weekly and after significant (1/2 inch or greater) rainfall events to
see if any erosion around or below the riprap has taken place, or if stones have been dislodged.
Immediately make all needed repairs to prevent further damage.
401.14 Rolled Erosion Control Products (RECP) / Liners
See Section 7.0 of the Plan Narrative for permissible shear stress values.
Construction Specification:
1. Grade the surface of installation areas so that the ground is smooth and loose.
2. Spread seed, lime, and fertilizers according to the Vegetation Plan before RECP installation.
3. Excavate terminal trenches (12 inches deep and 6inches wide) across the channel at the upper
and lower ends of the channel to be lined.
4. At 25 -foot intervals along the channel, anchor the RECP across the channel either in 6 inch
trenches or by installing two closely spaced rows of anchors.
5. Excavate longitudinal trenches 6 inches deep and wide along the channel edges (above the
water line) in which to bury the outside RECP edges.
6. Place the first RECP roll at the downstream end of the channel. Place the end of the first
RECP roll in the terminal trench and pin it at the 1 foot intervals along the bottom of the trench.
The RECP should be place upside down in the trench with the roll on the downstream side of
the trench.
7. Once pinned and backfilled, the RECP is deployed by wrapping over the top of the trench and
rerolling upstream.
8. If the channel is wider than the provided rolls, place ends of adjacent rolls in the terminal trench,
overlapping the adjacent rolls a minimum of 3 inches. Pin at 1 foot intervals, back fill, and
compact.
9. Unroll the RECP in the upstream direction until reaching the first interval trench. Fold the RECP
back over itself, positioning the roll on the downstream side of the trench, and allowing the mat
to conform to the trench.
10. Pin the RECP (two layers) to the bottom of the trench, backfill, and compact. Continue up
the channel (wrapping over the top of the intermittent trench) repeating this step at other
intermittent trenches, until reaching the upper terminal trench.
11. At the upper terminal trench, allow the RECP to conform to the trench, secure with pins and
staples, backfill. Compact and then bring the mat back over the top of the trench and onto the
existing mat (2 to 3 feet overlap in the downstream direction), and pin at 1 foot intervals across
the RECP.
12. When starting the installation of a new roll, begin in the trench or shingle -lap the ends of the
rolls a minimum of 1 foot with upstream RECP on top to prevent uplifting.
13. Place the outside edges of the RECP(s) in longitudinal trenches, pin, backfill, and compact.
NC DEQ 401 Certification
No Water Quality 401 Certification is required for this site.
Leaks or Spills:
There have been no significant leaks or spills at this site in the
last three years.
Easements:
There are no known easements on this site.
Site Stabilization:
Disturbed areas will be stabilized within 14 working days for slopes
3:1 or less and within 7 working days on slopes steeper than 3:1.
401.14 Rolled Erosion Control Products (RECP) / Liners (continued)
Anchoring Devices:
1. Anchoring devices should be 11 gauge, at least 6 inches long by 1 inch wide staples or
minimum 12 inch long wooden stakes.
2. Drive staples or pins so that the top of the staple or pin is flush with the ground surface.
3. Anchor each RECP every 3 feet along the center. Longitudinal overlaps must be sufficient to
accommodate a row of anchors and uniform along the entire length of the overlap and anchored
every 3 feet along the overlap length.
4. Roll ends may be spliced by overlapping 1 foot (in the direction of water flow), with the
upstream/upslope mat placed on top of the downstream/downslope RECP. The overlap should
be anchored at 1 foot intervals across the RECP.
5. When installing multiple width mats heat seamed in the factory, all factory seams and weld
overlaps should be similarly anchored.
Maintenance:
1. Inspect RECP at least weekly and after each significant rainfall event (1/2 inch or greater).
Make needed repairs immediately.
2. Good contact with he ground must be maintained and erosion must not occur beneath the
RECP.
3. Any area of the RECP that is 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 RECP as necessary until ground cover is established.
401.15 Inspection Procedures
1. A rain gauge must be maintained on-site in good working order.
2. A written record of daily rainfall amounts must be maintained. If not daily rain gauge
observations area made during a weekend or holiday period, the cumulative
measurement for the un -attended days shall be used to determine if a site inspection is
required. If no rainfall occurs record a "0" for that day.
3. Erosion and sediment control measures shall be inspected to ensure they are operating
properly at least once every seven calendar days and within 24 hours after any storm
event of greater than 0.50 inches.
4. Inspections must include observations of the outfall for erosion, sedimentation and other
stormwater discharge characteristics such as clarity, floating solids, and oil sheen.
5. Inspection records must be maintained for all inspections.
6. Inspections are only required to be made during normal business hours.
7. Inspection records for the previous 30 days must be kept onsite. Older records must be
maintained for a period of three years after the completion of the project.
8. Inspections must be recorded on the Combined Self -Monitoring Form provided by NC
DEMLR. A copy of the form may be obtained at the following link:
http.//deq. nc.gov/about/divisions/energy-mineral-1and-resources/erosion-sediment-control/forms
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WATER ENTRY UNITKEVIN
WITH TRASH SCREEN GENERAL NOTES:
1. PROPER DESIGN MUST BE COMPLETED TO MINIMIZE PIPING AROUND DISCHARGE PIPE.
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2. PROPER ORIFICE OPENING MUST BE SELECTED TO ENSURE POND DRAINS INCORRECT
AMOUNTOFTIME MODIFICATIONS MAYBE REQUIRED IF FIELD CONDITIONS WARRANTA
CHANGE.
COIR FIBER BAFFLE DETAIL
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3. EMBANKMENT MUST BE COMPACTED TO DESIGN SPECIFICATIONS.
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ORIFICE OPENING INSIDE THE 5. EROSION PROTECTION MUST BE INSTALLED ALONG THE EMBANKMENTAND A T THE
INSTALL T -POST TO ANCHOR
DRAPE BAFFLE MATERIAL OVER WIRE STRAND BAFFLE TO SIDE OF BASIN AND
STEEL POSTS (ODANTITY VAR.V SKIMMER tSIZE VAR.)
HORIZONTAL TUBE WITH DISCHARGE END OF THE PIPE.
CONSTANT HYDRAULIC HEAD 6. INSPECT SYSTEM REGULARLY TO ENSURE IT IS FUNCTIONING INA CORRECTMANNER.
AND SECURE WITH PLASTIC TIES AT POSTS SECURE TO VERTICAL POST
AND ON WIRE EVERY 12°
2'1 "2(nominal)
J, EIGHTSIZESOFSKIMMERSAREAVAILABLE, REFER TOTHEFLOWSHEET, CUTSHEET
SOIL 5 AgIL;IM1TI,CN
GE OT E%T, L E
STAKE
TAKE
AND INSTRUCTIONS ON WEB SITE FOR EACH SIZE.
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4' MAX. �-i
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PLASTIC SLOPE DRAIN
PTPF (17 7N_0--NTWIN.)
SCHEDULE 40 PVC PIPE I
(BARREL OR ARM) SKIMMER SIZE- 1.5"
6 1/2 FT LENGTH ORIFICE SIZE - 1.5"
9 GAUGE MIN HIGH
TENSION WIRE STRAND
- F-+`•4
--_-_-_ -
72-gq,
STRAW BALE
STAPLES BINDER WIRE
(2 PER BALE)
SHALL BE SECURED
TO POST TO SUPPORT 3'
s 6'{MIH•;
10 mil PLASTIC LINING
PLYWOOD
48"X24"
8 X24
FLEXIBLEHOSE EARTHEN EMBANKMENT
BAFFLE MATERIAL , ` VARIABLE DEPTH
NATIVE MATERIAL
(OPTIONAL)
BLACK TITERS
PAINTED WHITE 6"HEI T
FLOAT MERGENCY SPILLWAY
PVC VENT
`
PIPE
, i [ ,
COIR FIBER MAT
TEMPORARY OR
tOYIN•'�`�
910 STEEL
REINFORL�NT BAR
IICONCRE Ell LAG SCREWS
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PERMANENT PITCH
SECTION B -B
I WASHOUT
SCHEDULE 40 PVC PIPE FLOAT
TOP VIEW BARREL OR ARM
6 f/2 FT LENGTH)
R
SECURE BOTTOM OF BAFFLE
BAFFLE MATERIAL TO GROUND WITH 12 STAPLES
Ir -r iMLH.l til STM Pw raro s.0-`•
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R:MARY SPILLWAY
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NOT TO SCALE
WOODOR
METALSTAKES
( 2PER BALE)
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36" WOOD POST
PVC VENT PIPE
AT 12" MAXIMUM SPACING BAFFLE MATERIAL
EARTH DIKE
zz L = 3W
10'MINIMUM
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MINIMIZE DISCHARGE
AROUND PIPE MUST OCCUR.
STAPLE
1.5:3 IMIN.1 3• rrv. nx
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1" nwin•1)
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C NCRETE WASHOUT
SIGN DETAIL
(OR EQUIVALENT)
L = 1.4 x DEPTH
UNCLASSIFIED EARTH --
MATERIAL
1"
TO THE OVERFLOW
I'll
7FF1=1 Ifil I ' -_ -
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WATERENTRYUNIT MINIMUM LENGTHAPPOES
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NOTE: INSTALL THREE (3) COIR FIBER ^1
BAFFLES IN SILT BASINS AND SEDIMENT ' 2'-0" DEPTH
POST
COIR EI9ER 3AFFLE I I 2° 14M14
(SEE ROADWAY STD, DRIC, NO. 1640,01] UNCLASSIFIED EARTH
MAfEItIAL
P pcE $$E Aar AR3OYUND A L PIPE
STEEL PASTS WTH MJNMUM wT]TH OF IN.
12"
VARIES
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DAMS AT DRAINAGE OUTLETS WITHA [STEEL -
END VIEW SIDE VIEW MAINTAIN DEPRESSION TO
4"DISCHARGEPIPE MINIMIZE CHANCE OF
SPACING OF 1/4 THE BASIN LENGTH. '
CLASS B STONE PAD [4' x 4'x V MIN.1
pry
VVIR FIBER MAT
8 1.12"DIA
SCHEDULE40 (NO SCALE) SKIMMER BECOMING STUCK
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TWO(2) COIR FIBER BAFFLES CAN BE ----
NOTES
ANCHOR OPT_1"N
STEEL WIRE
DRA WN BY T R. EVANS 10/10
INSTALLED IN SILT BASINS AND DAMS1.
SEED AND PLACE MATTING FOR EROSION CONTROL ON INTERIOR AND EXTERIOR SIDESLOPES.
J W. FAIRCLOTH S SON INC.
BAFFLE MATERIAL SHALL BE SECURED
LESS THAN 20 FT. IN LENGTH WITH A TO THE BOTTOM AND SIDES OF BASIN
2,LIMIT EARTH DIKE HEIGHT TO 5 FT.
3. FOR BASIN DEPTH OF 3 FT, THE MINIMUM BASIN WIDTH SHALL BE 9 FT.
STAPLE
/sts)/32-1204
FAIRCL 0TH SKIMMER°DISCHARGE SYSTEM W/TH EMBANKMENT TELEPHONE E (919)7 2-1 4
SPACING OF 1/3 THE BASIN LENGTH. USING 12" LANDSCAPE STAPLES
4. DETERMINE PRIMARY SPILLWAY WEIR LENGTH f FT, ] USING Q10.8 WHERE Q IS FLOW RATE {CFS} INTO BASIN.
5. PLASTIC SLOPE DRAIN PIPE AT INLET OF BASIN Y BE REPLACO BY FILTRATION GEOTEX ILE OR TARP AS DIRECTED.
10 mil PLASTIC LINING STRAW BALE DETAIL
PLAN
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S. SOIL STABILIZATION GEOTEXTILE FOR PRIMARY SPILLWAY SHALL BE ONE CONITINUOUS PIECE OF MATERIAL OR OVERLAPPED
18 IN. (MIN.), Har IO SiRLE
NOT TO ALE (TY P)
EMAIL: [e-mail]
TYPE "A OVE GRADE" WITH STRAW BALES
NOTES
1. ACTUAL LAYOUT TO BE DETERMINED IN THE
FIELD.
RALEIGH
2. A CONCRETE WASHOUT SIGN SHALL BE
SIDES OF FABRIC
ICITWCOF
PUBRKS DEPARTMENT
INSTALLED WITHIN 30'OF THE TEMPORARYSECURELY
CONCRETE WASHOUT FACILITY.
ANCHORED
REVISIONS DATE: 10/22/2012 DRAWN BY: WDP
3. MATERIALS USED TO CONSTRUCT TEMPORARY
CONCRETE WASHOUT FACILITIES SHALL BE
REMOVED FROM THE SITE OF THE WORK AND
8"STAPLES OR PINS TO FABRIC SPILLWAY 3:1 SIDE 8" STAPLES OR PINS TO
HOLD FABRIC IN TRENCH LINING: TILE SLOPES HOLD FABRIC IN TRENCH
I
CONCRETE WASHOUT
DISPOSED OF OR RECYCLED.
FABRICBRIC
20'
4. HOLES, DEPRESSIONS OR OTHER GROUND
DISTURBANCE CAUSED BY THE REMOVAL OF THE
DRAINAGE CHANNEL
WASH UT FACILITIES
TEMPORARYBE
2:1 MAXIMUM
SW -20.25
BACONCRETE
SHALL I E BACKFILLED, REPAIRED, AND
STABILIZED TO PREVENT EROSION.
SLOPE Clean-out
D50 (6") Riprap
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♦ INFLOW Stake
- -' _
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D50 (6) RIPRAP- 331. g' eleV.
1.5'. DEPTH DEPTH OF
Stone Shall extend
THICKNESS 9"
marked
FLOW 1.0'
PLAN VIEW 11'
across width of
(Not to Scale)
BOTTOMOFPONDBURY
THE BOTTOM AND
downstream end of
��- SIDES OF THE FABRIC ON
spillway and extend to 12" Diameter
UPPER EDGE OF
GEOTEXTILE FABRIC
- _ _ _ _ _ _ THE INSIDE OF THE DAM
SO THE WATER FLOWS
the -'326.5 ft contour Corrugated Metal Pipe
SECURED IN TRENCH
WIDTH= 8' OVER THE FABRIC AND
Stone shall extend
WITH 8" STAPLES OR PINS
330.0'
LAMINATED PLASTIC OR
DOES NOT GET UNDER IT
AND ERODE THE DAM!
DOWNSTREAM Flow
across channel bottom
IMPERMEABLE elev.
NOTE ON FABRIC WIDTH AND SPILLWAY
ELEVATION
END OF 22' 25'
3.O'
21'
and up the channel
GEOTEXTILEFABRIC
LENGTH: THE WIDTH MUS7COVER :
333.5'
SPILLWAY
bank to the to the
p o
THE BOTTOM AND SIDES AND LAP
ONTO THE TOP OF THE DAM IN ONE
bank. 5
CONTINUOUS PIECE WITHOUT
SPLICES. THE LENGTH MUST
EXTEND TO UNDISTURBED GROUND
BELOW THE DAM BUT lT CAN BE
SPLICES AS SHOWN BELOW.
D50 6" Riprap
8
TOP OF EMBANKMENT
PLAN VIEW
T
T
ELEV - 335 FT TOP EDGE OF SPILLWAY
SIDE VIEW
(Not to Scale)
3.715'
75'
SKIMMER BASIN INLET PROTECTION DETAIL
MAXIMUM SLOPEATSPILLWAY
(Not to Scale)
Undisturbed
Ground
y
OUTLET
DOWNSTREAM END
Surface
OFSPILLWAY d50 (6") Riprap
15" Diameter
PLAN VIEW
\ B OTTOM OF SPILLWAY
Geotextile Fabric
Corrugated Metal Pipe (Not to Scale)
BOTTOM OF POND \
SIDE VIEW
OUTFLOW
\ GEOTEXTILE
14
4" (Not to Scale)
Undisturbed
\ FABRIC EXTENDED
12" Diameter
\ TO UNDISTURBED
Corrugated Metal Pipe
Ground
\ GROUND
\
ip
Geotextile Fabric
SKIMMER BA SIN SPILLWAY 12�� D50 (6") Riprap
Surface
\
OUTLET PROTECT/ON DETAIL
Geotextile Filter
UPPER EDGE OF
GEOTEXTILE FABRIC SPL/GING THE LENGTH OF FA B.
UPPER PIECE OF
SECURED IN TRENCH PLACE THE UPPER END OF THE
12/
g"
SIDE VIEW
Scale)
WITH 8" STAPLES OR PINS LOWER GEOTEXTILE FABRIC 18" UNDER GEOTEXTILE FABRIC
(Not to
Undisturbed
15" Diameter
THE EDGE OF THE NEXT PIECE AND LOWER PIECE OF
Ground
SECUREL YANCHOR /T AS SHOWN. GEOTEXTILEFABRIC
NTHEN EXT OVERLAP THE EDGE OF T HE IT
ING
PIECE
Geotextile Filter
Corrugated Metal Pipe
12 D50 (6") Riprap
Surface
(SO THA T THEREARE NOTHOLES TO
CULVERT 1 OUTLET PROTECTION
DETAIL
TEAR THE FABRIC).
COMPACTED FILL EDGE OF LOWER PIECE
Geotextile Filter
OF GEOTEXTILE FABRIC
2'
ANCHORED WITH 8" PIN
TOP RIM OF DITCHMINIMUM
ORSTAPLE
1
(COMPACTED SOIL)
SKIMMER BASIN SPILLWAY DETAIL
Geotextile Filter
18" rte'
STEEP CUT OR FILL
SLOPE
CULVERT 2 STORM DRAIN OUTLET
PROTECTION DETAIL
2 : 1 SLOPE
-1
1 l l = (MAXIMUM)
CROSS SECTION
REINFORCED TEMPORARY
SILT FENCE DETAIL
a' max- standard strength fabric with wire fence
NOTE
b' max- extra strength fabric without wire fence
STABILIZE DIVERSION DITCH WITH GRADED
Pipe Outlet to Flat Area-
Notes
AGGREGATE BASE AND WITH COMPOST SOCKS NO
FEWER THAN EVERY 50 LINEAR FEET- STABILIZE
6' MAX. WITH WIRE
No Well-defined Channel
1. L is the len th of the ri ra a ron.
a 9 P P P
TOP RIM WTH PERMANENT VEGETARON SEEDING.
Steel
2. D = 1.5 times the maximum stone
Post
MIDDLE AND VERTICAL WIRESA
SHALL BE 121t GAUGE MIN.
diameter but not less than 6".
Plastic or
3d ,, A
wire ties
---
3. In a well-defined channel extend the
TEMPORA RYD/VERSION DITCH DETAIL
TOP AND BOTTOM STRAND
SHALL BE 10 GAUGE MIN.
24" MAx.
d
---
`\
apron up the channel banks to an
elevation of 6" above the maximum
Wire 18 24"°
(18" MIN.)
tailwater depth of to the top of the
fence
bank, whichever is less.
Natural
Plan
4. A filter blanket or filter fabric should
- ground
;_,
be installed between the riprap and
4 La �
soil foundation.
- - - --
FILTRATION
GEOTEXTILE
S" down d 4"
NOTES
I =L
I�
III D IT
fQQ�
USE FILTRATION GEOTEXTILE
II
24 h Filter
A MINIMUM OF 36" IN WIDTH AND
FILTRATION GEOTEXTILE ��
Section AA R Filter
fabric
FASTEN ADEQUATELY TO THE POSTS
AND WIRE AS DIRECTED.
COMPACTED FILL
blanket
USE WIRE A MINIMUM OF 32"
IN WIDTH AND WITH A MINIMUM
Pipe Outlet t0 Well-defined
OF 6 LINE WIRES WITH 12" STAY
-
Channel
SPACING.
-III-III B/r IIS I I -III -I I
PROVIDE 5'-O" STEEL POST OF
Wire
THE SELF -FASTENER ANGLE STEEL
'
fence
TYPE.
q STEEL POST - 2'-O" DEPTH
Cross -Section
FOR MECHANICAL SLICING METHOD
V16N
INSTALLATION, GEOTEXTILE SHALL
A A
BE A MAXIMUM OF 18" ABOVE GROUND
MO. DIRECTIONOFDRAINAGE
Filter
SURFACE.
EXTENSION OF GEOTEXTILE AND
Z F1' SWALEFLOW
COMPOST SOCK
Steel fabric B3 ickfill trench Natural
WIRE INTO TRENCH
/COMPOST SOCK
Post /f and compact
thoroughly ground
3 IN.
/
4! y t
FLOW---,-� �
Pian
12 /N. MIN. a
--2IN.X2IN.
• • • • •
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SECTION VIEW ISOMETRIC VIEW PLAN VIEW
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COMPOST SOCK CHECK DAM INSTALLATION
III I I
Section AA .1 II
Ila III�II - _INS„ ��1u1, IIID
Filter
blanket
SEDIMENT FENCE INSTALLATION DETAIL
R/PRAP OUTLET PROTECTION - GENERAL CONSIDERATIONS
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CRUSHED STONE CONSTRUCTION ENTRANCE DETAIL (CO)
Aggregate Size: Use 2-3 inch washed stone
Dimensions of gravel pad
Thickness: 6 inches minimum
Width: 12 -feet minimum or full width at all points of the vehicular entrance and exit area, whichever is greater
Length: 50 -feet minimum
Location
Locate construction entrances and exits to limit sediment from leaving the site and to provide for maximum
utility by all construction vehicles (Figure 6.06a). Avoid steep grades, and entrances at curves in public roads.
Stone shalt extend
across channel bottom
and up the channel D50 (6") Riprap
bank to the top of the
bank. f
6' 12" Diameter
Corrugated
j Metal Pipe
PLAN VIEW 12'
(Not to Scale)
Construction Access
SIDE VIEW Road
Undisturbed (Not to Scale) \
12" Diameter
Ground Corrugated Metal Pipe
Surface D50 (6") Riprap 92"
Channel
\ Geotextile Filter
9" 114"
Geotextile Filter
CULVERT 1 INLET PROTECTION DETAIL
Stone shall extend
across channel bottom
and up the channel
bank to the top of the
bank. 20'
D50 Riprap
Ity MY MY
•
PLAN VIEW Corrugated etal-.
(Not to Scale)
0
Geotextile
Geotextile Filter
CULVERT 2 INLET PROTECTION DETAIL
Q)
Construction Access
Undisturbed
SIDE VIEW
(Not to Scale)
Overlap b" min. grade and cross-section
Road
\
design depth d'
15" Diameter
00
Ground
Surface
\ Roadside Ditch/
D50 (6") Riprap
Corrugated Metal Pipe
12
0
Geotextile
Geotextile Filter
CULVERT 2 INLET PROTECTION DETAIL
24 HOUR CONTACT:
KEVIN CRUSA
McCARTHY IMPROVEMENT CO.
[phone]
Q)
Exaavate channel to design
Overlap b" min. grade and cross-section
0
design depth d'
00
* �✓ Lengitudinal
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anchor trench
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Overcut channel 2" to allow bulking
0
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during seedbed preperation
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Typical installatian ?�
with erosion control
blankets or turf
T reinforcement mats
Intermittent check slat Longitudinal anchor trench
5hingle-lap spliced ends or begin new
W
roll in an intermittent check slot
Prepare soil andapply seed befo
installing blankets, mats or at}i
temporary channel linersys
+fes
i
t /
NOTE5:
t. Design velocities exceeding 2 ft/sec require temporary blankets, mats or similar liners to protect
seed and soil until vegetation becomes established.
2.6rass-lined channels with design velocities exceeding 6 ft/sec should include turf reinforcement
mats
RECP/LINER/TURF REINFORCEMENT MAT INSTALLATION DETAIL
24 HOUR CONTACT:
KEVIN CRUSA
McCARTHY IMPROVEMENT CO.
[phone]
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