20140843 Ver 1_More Info Received_20140811

Strickland, Bev
From:
Wanda Austin <wandajoyceaustin @gmail.com>
Sent:
Monday, August 11, 2014 9:39 PM
To:
Strickland, Bev
Subject:
Re: DWQ# 140843 - Jule Nolad Drive Phase II
Attachments:
Harmon Graham -STORM WATER PLAN 2 OPT (2)- signed.pdf, Harmon Graham -
STORMWATER PLAN OPT (2)- signed.pdf, Harmon Graham -PHASE 2 ECP 5 OPT (2)-
signed.pdf, Harmon Graham -PHASE 2 GRADE ECP OPTION (2)- signed.pdf; Harmon
Graham -PHASE 2 ECP2 OPT (2)- signed.pdf, Harmon Graham -PHASE 2 ECP 3 OPT (2)-
signed.pdf, Harmon Graham -PHASE 2 ECP 4 OPTION 2- signed.pdf
Thank you for contacting me. I have attached the pdf plans for the Jule Noland Road Phase II project. Let me
know if you need any additional information.
On Mon, Aug 11, 2014 at 12:03 PM, Strickland, Bev <bev.stricklandgncdenr.gov> wrote:
Ms. Austin,
Could you please send me an electronic copy of the site plans for the above project? PDF would be great.
Thanks,
Bev
Beverly- Strickland, Administrative Officer
Division of Water Resources
N.C. Department of Environment and Natural Resources
Mail Service Center 1617, Raleigh, NC 27699 -1617
Phone# 919 - 707 -8789
Email Address: Bev.Stricklanda,ncdenr.gov
E -mail correspondence to and from this address mar° be subject to the Forth Carolina Puhlic Records Larti°and mar° be disclosed to thlr-d parties.
1

TEMF
PERMAM
wUSE A 2/z INCH SKIMMER WITH 1.3 INCH ORIFICE
SKIMMER BASIN WITH BAFFLES:
Description
Provide a skimmer basin to remove sediment from construction site runoff at locations shown in the erosion
control plans, Work includes constructing sediment basin, installation of coir fiber baffles, furnishing,
installation and c(eanout of skimmer, providing and placing stone pad on bottom of basin underneath skimmer
device, providing and placing a geotextile spillway liner, providing coir fiber mat stabilization for the skimmer
outlet, disposing of excess materials removing coir fiber baffles, geotextile liner and skimmer device, backfilling
basin area with suitable material and providing proper drainage when basin area is abandoned.
Materials
Provide appropriately sized and approved skimmer device,
Provide Schedule 40 PVC pipe with a length of 6 ft. to attach to the skimmer and the coupling connection to
serve as the arm pipe. For skimmer sizes of 2.5 in. and smaller, the arm pipe diameter shall be 1,5 inches, For
skimmer sizes of 3 in. and larger, refer to manufacturer recommendations.
Provide 4" diameter Schedule 40 PVC pipe to attach to coupling connection of skimmer to serve as the barrel
pipe through the earthen dam.
SKIMMER BASIN WITH BAFFLES DETAIL
- aples, stakes, or reinforcement bars shall be used as anchors.
'takes:
iardwood stakes 12 "- 24" long with a 2" x 2" nominal square cross section. One end of the stake
sharpened or beveled to facilitate driving through the coir fiber mat and down into the underlying
other end of the stake needs to have a 1 '- 2' long head at the top with a 1 "- 2" notch following
and secure the coir fiber mat,
nforcement Bars:
Ancoated #10 steel reinforcement bars 24" nominal length. The bars shall have a 4" diameter bend at
with a 4" straight section at the tip to catch and secure the coir fiber mat,
>taples made of 0,125" diameter new steel wire formed into a u shape not less than 12" in length with
of 1" in width,
i Methods
sin according to the erosion control plans with basin surface free of obstructions, debris, and
low - density material. Construct the primary spillway according to the Skimmer Basin with Baffles
;truct the coir fiber baffles.
er device according to manufacturer recommendations, Install 4" Schedule 40 PVC pipe into dam on
de of basin 1 ft. from the bottom of the basin and according to the detail and extend the pipe so
.l drain, Attach a 6 ft. arm pipe to the coupling connection and skimmer according to manufacturer
ions. Attach the rope included with the skimmer to the tee between the vent socket and the tube
ie other end to a wooden stake or metal post. Clean out skimmer device when it becomes clogged
t and /or debris and is unable to float at the top of water in skimmer basin. Take appropriate
avoid ice accumulation in ht skimmer device. Construct a stone pad of Class B stone directly
the skimmer device at bottom of basin. The pad shall be a minimum of 12" in height, and shall have a
s sectional area of 4 ft by 4 ft.
spillway with geotextile unrolled in the direction of flow and lay smoothly but loosely on soil surface
kses. Bury edges of geotextile in a trench at least 5" deep and tamp firmly. If geotextile for the
way is not one continuous piece of material, make horizontal overlaps a minimum of 18" with upstream
verlapping the downstream geotextile. Secure geotextile with eleven gauge wire staples shaped into a
i a length of not less than 12" and a throat not less than 1" in width. Place staples along outer
hroughout the geotextile a maximum of 3 ft. horizontally and vertically. Geotextile shall be placed to
and across the entire width of the basin according to the Skimmer Basin with Baffles detail. Place
le basin around barrel pipe on top of geotextile with a minimum width of 6 in.
ier outlet, provide a smooth soil surface free from stones, clods or debris that will prevent
the coir fiber matting with the soil. Unroll the matting and apply without stretching such that it
;hly but loosely on the soil surface. Wooden stakes, reinforcement bars, or staples may be used as
xccordance with the details in the plans and as directed. Place anchors across the matting at the
imately 1 ft. apart. Place anchors along the outer edges and down the center of the matting 3 ft.
slope sections of the skimmer basin shall be seeded with a temporary or permanent seed mix. Straw
matting shall be installed on all bare side slope sections immediately upon the completion of seeding.
Design Silt Basin
Basin ID 1 1
2
Calculate Peak Flow: Q = CIA
Time o
Concentration,Tc
(min) =
Disturbed Area (Acres)
1.7
0.9
Undisturbed Area 1 (A
5.3
1
Undisturbed Area 2 (A
0
0
Undisturbed Area 3 (A
0
0
Total Drainage Area
(Acres)
7.00
1.90
Disturbed Area C Fact
0.50
0.50
Undisturbed Area 1 C 1
0.05
0.05
Undisturbed Area 2 C1
0.00
0.00
Undisturbed Area 3 C 1
0.00
0.00
Total Drainage Area C
0.16
0.26
Rainfall Intensity
Factor (in /hr)
6.65
6.65
Peak Flow Rate Q (cfs
7.41
3.33
EC design measure
Basin
Basin
Surface Area Calculation
U
Required Surface Area
(ft.2) = .01 x Q10 x
43,560
3230
1448
Required Sediment
Storage = 3600 ft.3
per Disturbed Acre
6120
3240
Storage Provided in
Ditch
0
0
Required Storage
6120
3240
Minimum Basin
Depth (ft)
3
3
Basin Size
Length (ft)
100
80
Width (ft)
33
20
Provided
9900
4800
Provided SA 3300 1600
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SCALE:
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WATER ENTRY UNIT
TH TRASH SCREEN
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OR ZONTAL TUBE WITH A
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HOSE
F PPE
POTENTIAL F(
OCCUR. F
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AROUND PPE
vvh L_ I) ENTRY UN T
DISCHARGE
SCHEDULE
GENERAL NOTES:
1. PROPER DESIGN MUST BE COMPLETED TO MINIMIZE P P NG AROUND DISCHARGE
PIPE.
2. PROPER ORIFICE OPENING MUST BE SELECTED TO ENSURE POND
CORRECT AMOUNT OF TIME. MODE CAT ON S MAY BE REQUIRED
CONDITIONS WARRANT A CHANGE.
3. EMBANKMENT MUST BE COMPACTED TO DESIGN SPECIFICATIONS.
4. EMERGENCY SPILLWAY MUST BE CORRECTLY SIZED AND EROSION
INSTALLED.
DRAINS IN
E FIELD
PROTECTION
5. EROSION PROTECTION MUST BE INSTALLED ALONG THE EMBANKMENT AND AT THE
DISCHARGE END OF THE PPE.
6. INSPECT SYSTEM REGULARLY TO ENSURE IT IS FUNCTIONING IN A CORRECT
MANNER.
7. EIGHT S ZES OF SKIMMERS ARE AVAILABLE, REFER TO THE FLOW SHEET, CUT
SHEET, AND INSTRUCTIONS ON WEB SITE FOR EACH SIZE.
SKIMMERO DISCHARGE
40 (NO SCALE) SKIMMER BECOMING STUCK
SYSTEM
WITH EMBANKMENT
DRAWN BY T. R. EVANS 10/10
J. W. FAIR CLOTH & SON INC.
WWW. FAIR CLOTH SKIM M ER. COM
TELEPHONE: [phone]
FAX: [phone]
EMAIL: WARREN @FAIRCLOTHSKIMMER.COM
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SCALE:
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August 4, 2011
Major Elements of DWQ Construction General Permit
This document contains the major elements of the recently- revised North Carolina Division of Water Quality (DWQ) Construction
General Permit (NCGO 1) with emphasis placed on those elements that differ from the previous permit (expiration on August 2,
2011). Since the summary list below cannot contain details of every change, the complete Permit should be used to assure full
implementation. See: http: // portal. ncdenr .org /web /wq /ws /su /construction
1) Ground Stabilization*
Site Area
Stabilization
Stabilization Time
Description
Time Frame
Frame Exceptions
• Perimeter dikes,
swales, ditches
7 days
None
and slopes
• High Quality
Water (HQW)
7 days
None
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7 days
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greater than 50 feet
flatter
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in length
None
• All other areas (except for
with slopes flatter 14 days
than 4:1 perimeters and
HOW Zones)
* "Extensions of time may be approved by the permitting authority
based on weather or other site - specific conditions that make compliance
impracticable." (Section II.13(2)(b))
The major change in the Permit from the previous one is the shorter
times to apply ground stabilization such as mulch, wheat straw, or
grasses. The NC laws and rules relating to the Sediment Act require,
in most places, ground stabilization within 21 days. Based on the new
EPA requirements and 9- months' work with a permit advisory group,
CTAG, the Division and EPA - developed permit, now contains
requirements for ground cover within 14, and in some places, 7 days.
2) Building Wastes Handling
• No paint or liquid wastes in stream or storm drains
• Dedicated areas for demolition, construction and other
wastes must be located 50' from storm drains and streams
unless no reasonable alternatives available.
• Earthen- material stockpiles must be located 50' from storm
drains and streams unless no reasonable alternatives
available.
• Concrete materials must be controlled to avoid contact with
surface waters, wetlands, or buffers.
3) Discharges to Federally - listed Waters
• Requirements are the same as in previous permit.
• The permit allows reduction from the 20 acre minimum if
the Director of DWQ determines that other BMPs provide
equivalent protection.
11
Major Elements of DWQ Construction General Permit- Continued
4) Inspections
• Same weekly inspection requirements
• Same rain gauge & inspections after 0.5" rain event
• Inspections are only required during "normal business
hours"
• Inspection reports must be available on -site during
business hours unless a site - specific exemption is
approved.
• Records must be kept for 3 years and available upon
request.
• Electronically- available records may be substituted
under certain conditions.
5) Implementation of New Permit Conditions
• Projects permitted under the previous permit can
continue to follow the previously - permitted conditions.
• Complete applications received prior to August 3, 2011
can follow conditions of approved application.
• Applications received after August 2, 2011 must comply
with new permit conditions.
August 4, 2011
6) Conditions in Erosion & Sedimentation Control Plans*
Designation on the plans where the 7 and 14 -day ground
stabilization requirements of the NPDES permit apply
Designation on the plans where basins that comply with the
surface - withdrawal requirements of the NPDES permit are
located.
7) Building Wastes Handling
• No paint or liquid wastes in stream or storm drains
• Dedicated areas for demolition, construction and other
wastes located 50' from storm drains and streams unless
no reasonable alternatives are available.
• Earthen- material stockpiles located 50' from storm
drains unless no reasonable alternatives available.
• Concrete materials must be controlled to avoid contact
with surface waters, wetlands, or buffers.
8) Sediment Basins
• Outlet structures must withdraw from basin surface
unless drainage area is less than 1 acre.
• Use only DWQ- approved flocculants.
* In order for the E &SC Plan to satisfy the conditions of the Construction General permit, it must identify areas where the ground stabilization requirements apply and the
location of the basins where the surface - withdrawal requirements apply.
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SCALE:
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ATTACH FILTER FABRIC
SECURELY TO UPSTREAM
iza °fL Min
8' MAX SPACING WITH WIRE
SUPPORT FENCE
6' MAX SPACING WITHOUT WIRE
SUPPORT FENCE
3' MAX SPACING IN TROUT
BUFFER ZONE
�L33 lb /Unear ft STEEL POST
24" HIGH MAX
PONDING HEIGHT
LOW
4" X 8" TRENCH
WITH COMPACTED
BACKFILL
WITH TRENCH
PnNnTNG HEIGHT
LOW
N DRAIN ROCK
WITH ❑UT TRENCH
INSTALLATI ❑N DETAIL
NOTES:
I, SILT FENCE SHALL BE PLACED ON SLOPE CONTOURS TO MAXIMIZE PONDING EFFICENCY,
2, INSPECT AND REPAIR FENCE AFTER EACH STORM EVENT AND REMOVE SEDIMENT WHEN
NECESSARY, 9" MAX RECOMMENDED STORAGE HEIGHT,
3, REMOVED SEDIMENT SHALL BE DEPOSITED TO AN AREA THAT WILL NOT CONTRIBUTE TO
SEDIMENT OFF -SITE AND CAN BE PERMANENTLY STABILIZED,
A
SILT FENCE
LAND GRADING FOR MINIMIZING EROSION
iTH FILTER FABRIC NEEDED
SIT SUPPORT
CONSTRUCTION SPECIFICATIONS
1. Only disturb, clear or grade areas necessary for construction. Flag or otherwise delineate areas not to
be disturbed. Exclude vehicles and construction equipment from these areas to preserve natural
vegetation.
2. All graded or disturbed areas including slopes shall be protected during clearing and construction in
accordance with the approved erosion and sediment control plan until they are permanently
stabilized.
3. All sediment control measures shall be constructed and maintained in accordance with the approved
erosion and sediment control plan and according to the standards and specifications for the
appropriate erosion control practices.
4. If topsoil is required for the establishment of vegetation, it shall be stockpiled in the amount
necessary to complete finished grading and protected from erosion during the interim.
5. Areas to be filled shall be cleared, grubbed to remove trees, vegetation, roots and other objectable
material and stripped of topsoil.
6. Areas to receive topsoil shall be scarified to a minimum depth of 3 inches prior to placement of
topsoil.
7. All fills shall be compacted as required by building standards to reduce erosion, slippage, settlement,
subsidence and other related problems. Fill intended to support buildings, structures, conduits, etc.
shall be compacted in accordance with local requirements or codes.
8. The outer face of the fill slope should be allowed to stay loose, not rolled, compacted or bladed
smooth. A bulldozer may run up and down the fill slope so the dozer treads (cleat tracks) create
grooves perpendicular to the slope. If the soil is not too moist, excessive compaction will not occur.
9. All fill shall be placed and compacted in layers not to exceed 8 inches per lift.
10. Use slope breaks, such as diversions, benches or contour furrows as appropriate, to reduce the
length of cut and fill slopes to limit sheet and rill erosion and prevent gully erosion.
11. The finished cut and fill slopes, which are to be vegetated with grass and legumes, should not be
steeper than 2:1.
12. Slopes to be maintained by tractor or other equipment should not be steeper than 3:1.
13. Slopes in excess of 2:1 may require hydro- seeding, hydro- mulching, tactifying and/or punching -in
straw, bioengineering techniques, or retaining walls.
14. Roughen the surface of all slopes during the construction operation to retain water, increase
infiltration and facilitate vegetation establishment.
15. Seeps or springs encountered during construction shall be handled in accordance with approved
methods.
16. Use mulch to stabilize areas temporarily where final grading must be delayed.
17. Stockpiles, borrow areas and spoil areas shall be shown on the plans and shall be stabilized to
prevent erosion and sedimentation.
PLANTING METHODS
• Uniform seed distribution is required by using a cyclone seeder, drop seeder, conventional grain drill,
culti acker seeder or hydraulic seeder.
p Y
• Disturbed areas shall be temporarily seeded if construction activities are halted more than 7 calendar days.
Areas that are on final grade shall be permanently seeded within 14 calendar days of completion.
SOIL PREPARARION FOR SEEDING
• Stair -step grade or groove cut slopes with a gradient steeper than 3:1
• Use stair -step grading on any erodible material soft enough to be ripped with a bulldozer. Slopes consisting
of soft rock with some subsoil are particularly suited to stair -step grading.
• Make the vertical cut distance less than the horizontal distance, and slightly slope the horizontal position of
the "step" in towards the vertical.
• Do not make individual vertical cuts more than 2 feet in soft materials or more than 3 feet in rocky materials
• Groove using any appropriate implement that can be safely operated on the slope, such as disks, tillers, spring
harrows or the teeth on a front end loader bucket. Do not make such grooves less than 3 inches deep nor more
than 15 inches apart.
Fill slope roughening for areas not to be mowed:
• Place fill slopes with a gradient steeper than 3:1 in lifts not to exceed 9 inches and make sure each lift is
properly compacted. Ensure that the face of the slope consists of loose, uncompacted fill 4 to 6 inches deep.
Se grooving as described above to roughen the face of the slopes.
• Do not blade or scrape the final slope face.
Cuts, fills and graded areas that will be mowed:
• Make mowed slopes no steeper than 3:1
it Roughen these areas to shallow grooves by normal tilling, disking, harrowing or use of cultipacker seeded.
Make the final pass of any such tillage implement of the contour.
• Make grooves, formed by such implements, close together (less than 10 inches) and not less than 1 inch deep.
• Excessive roughness is undesirable where mowing is planned.
DIVERSION RIDGE REQUIRED
WHERE GRADE EXCEEDS 2%
2% OR GREATER
ROADWAY A
�� i luiv n FT
R FABRIC.
50' MIN
F11 n
NOTES:
1. THE ENTRANCE SHALL BE MAINTAINED N A CONDITION THAT WILL PREVENT TRACKING OR
FLOWING OF SEDIMENT UNTO PUBLIC RIGHTSEIF -WAY, THIS MAY REQUIRE TOP DRESSING,
REPAIR AND /OR CLEANOUT OF ANY MEASURES USED TO TRAP SEDIMENT
2, WHEN NECESSARY, WHEELS SHALL BE CLEANED PRIOR TO ENTRANCE ONTO PUBLIC
RIGHT -OF -WAY,
3. WHEN WASHING IS REQUIRED, IT SHALL BE DONE ON AN AREA STABILIZED WITH CRUSHED
STONE THAT DRAINS INTO AN APPROVED SEDIMENT TRAP OR SEDIMENT BASIN.
C❑NSTRUCTI ❑N ENTRANCE /MUD MAT
TEMPORARY GRAVEL C❑NSTRUCTI ❑N ENTRANCE;
Construction Specifications
The aggregate size for the construction of the pad
shall be 2 -3 inch stone, Place the gravel to the
specific grade and dimensions shown on the plans.
Construct a gravel pad of not less than 6 inches thick,
Use geotextile fabric to improve the stability of the
foundation in locations subject to seepage or high
water tables. The width of the gravel pad should be
the width of the ingress /egress but not less than 12
feet, The length of the pad is not less than 50 feet.
Locate construction entrances and exits to limit
sediment leaving the site and to provide for maximum
utility by all construction vehicles. Avoid entrances
which have steep grades and entrances at curves in
public roads,
Maintain the entrance in a condition that will prevent
tracking or flowing of sediment onto public rights of
way. Periodically top dress with additional stone as
conditions demand and repair any sedimentation devices
installed in conjunction with the entrance.
Remove all sediment spilled, dropped, washed, or tracked
onto public rights of way,
Provide drainage to carry water to a sediment trap
prior to releasing off the project,
Provide a water source to rinse vehicle wheels before
leaving the project, When washing is required, it should
be done on an area stabilized with crushed stone that
drains into an approved sediment trap or sediment basin,
All sediment shall be prevented from entering any storm
drain, ditch or watercourse through use of sand bags,
gravel, straw bales, or other approved methods,
Inspection and Maintenance
Maintain the gravel pad in a condition to prevent mud or
sediment from leaving the construction site.
Replace gravel material when surface voids are visible,
After each rainfall event of A" or greater, inspect any
structure used to trap sediment and clean it out as
necessary,
Immediately remove all objectionable materials spilled,
washed or tracked onto public roadways, Removal all
sediment deposited on paved roads within 24 hours,
GROUND STABILIZATI ❑N
SITE AREA DESCRIPTION
STABILIZATION TIME FRAME
STABILIZATION TIME FRAME
75# Hard Fescue
75# Hard Fescue
EXCEPTI ❑NS
PERIMETER DIKES, SWALES,
7 DAYS
NONE
DITCHES AND SLOPES
4000# Limestone
4000# Limestone
HIGH QUALITY WATER (HQW)
7 DAYS
NONE
ZONES
2pQ'Q�o 1W SS
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SLOPES STEEPER THAN 3:1
7 DAYS
IF SLOPES ARE 10' OR LESS IN
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211, 14 DAYS ARE ALLOWED
SLOPES 3:1 OR FLATTER
14 DAYS
7 DAYS FOR SLOPES GREATER
Q �
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W
THAN 50 FEET IN LENGTH
ALL OTHER AREAS WITH SLOPES
14 DAYS
NONE (EXCEPT FOR PERIMETERS
FLATTER THAN 4:1
z 00
AND HQW ZONES)
NPDES Major Elements of DWQ Construction General Permit
The full version of the Construction General Permit (NCG01) can be found at
http://portal.ncdenr.org/web/wq/ws/su/construction
Building Wastes Handling
• No paint or liquid wastes in stream or storm drains
• Dedicated areas for demolition construction and other wastes must be located 50' from
storm drains and streams unless no reasonable alternatives available
• Earthen - material stockpiles must be located 50' from storm drains and streams unless no
reasonable alternatives available
• Concrete materials must be controlled to avoid contact with surface waters, wetlands or
buffers
Discharges to Federally- Listed Waters
it Requirements are the same as in previous permit
• The permit allows reduction from the 20 acre minimum if the Director of DWQ
determines that other BMPs provide equivalent protection
Inspection
• Same weekly inspection requirements
• Same rain gauge & inspections after 0.5" rain event
• Inspections are only required during "normal business hours"
• Inspection reports must be available on -site during business hours unless a site - specific
exemption is approved
it Records must be kept for 3 years and available upon request
• Electronically - available records may be substituted under certain conditions
Implementation of New Permit Conditions
• Projects permitted under the previous permit can continue to follow the
previously - permitted conditions
• Complete applications received prior to August 3, 2011 can follow conditions of approved
application
• Applications received after August 2, 2011 must comply with new permit conditions
Conditions in Erosion & Sedimentation Control Plans
• Designation on the plans where the 7 and 14 day ground stabilization requirements of
the NPDES permit apply
it Designation on the plans where basins that comply with the surface - withdrawal
requirements of the NPDES permit are located
Sediment Basins
• Outlet structures must withdraw from basin surface unless drainage area is less than 1
acre
• Use only DWQ approved flocculants
CONSTRUCTION SCHEDULE
1. Obtain Erosion Control Permit and other applicable permits prior to the
start of grading.
2. Install rain gauge in an accessible area. Dedicate a log book to record rain
events and weekly inspections..
3. Maintain the temporary gravel construction entrance from phase I.
4. Stake area around wetland for perimeter protection fence.
3. Manually install a perimeter protection fence around the delineated
wetland. No eauinment is allowed within the wetland boundary that is not
to be disturbed.
4. Install silt fence at all locations shown on plan sheet. Silt fence shall be
manually installed along the outside of the 10 foot wetland buffer.
5. Layout the areas for the construction of the temporary skimmer basins.
6. Construct the temporary skimmer basins to the appropriate dimensions.
Construct the baffles in the temporary skimmer basins.
7. Establish temporary cover according to stabilization table schedule and the
seeding schedule on ECP 2.
8. Seed, fertilize and mulch all exposed areas using the seeding schedule
included on ECP2, adjusting to the schedule for the season. All disturbed
areas should be treated with ground cover within 7 to 14 calendar days of
completion of grading activities according to the stabilization table on ECP
2.
9. Once vegetation has been established, remove all temporary erosion control
devices.
MAINTENANCE PLAN
The following activities should be conducted routinely during the life of the
grading operation.
1. Add additional gravel to the temporary gravel construction entrance as
necessary to prevent off -site tracking.
2. Check protection fence, silt fences, temporary skimmer basins and
temporary ditches at least once each week and immediately following 0.5
inch rain event. Record each rain event in the log book. Clean out any silt
greater than six inches in depth. Clean out behind the silt fence when the
silt reaches 1 foot depth at the fence.
3. Dip out temporary basins when they are full and no longer contain the silt
or if the silt reaches 1 foot depth at the baffle.
4. During the course of this project, any areas of disturbed soil that failed to
obtain an adequate ground cover of grasses must be reseeded, fertilized
and mulched.
5. During the course of the project, repair any down or damaged silt fences.
A typical section shows the proper installation method.
6. Whenever the project is completely stabilized, all temporary erosion
control measures may be removed. Upon removal, grade the site, seed,
fertilize and mulch all exposed or damaged areas of soil.
Stabilization Requirements:
Stabilization for this project shall comply with the time frame guidelines as specified
by the NCG- 010000 general construction permit effective August 3, 2011 issued by
the North Carolina Department of Environment and Natural Resources Division of
Water Quality. Temporary or permanent ground cover stabilization shall occur within
7 calendar days from the last land - disturbing activity, with the following exceptions in
which temporary or permanent ground cover shall be provided in 14 calendar days
from the last land - disturbing activity:
• Slopes between 2:1 and 3:1, with a slope length of 10 ft. or less
• Slopes 3:1 or flatter, with a slope of length of 50 ft. or less
• Slopes 4:1 or flatter
The stabilization timeframe for High Quality Water (HQW) Zones shall be 7 calendar
days with no exceptions for slope grades or lengths. High Quality Water Zones
(HQW) Zones are defined by North Carolina Administrative Code 15A NCAC
04A.0105 (25). Temporary and permanent ground cover stabilization shall be
achieved in accordance with the provisions in this contract and as directed.
SEEDING AND MULCHING:
The kinds of seed and fertilizer, and the rates of application of seed, fertilizer, and
limestone, shall be as stated below. During periods of overlapping dates, the kind of
seed to be used shall be determined. All rates are in pounds per acre.
Shoulder and Median Areas
August 1 - June 1
May 1 - September 1
20# Kentucky Bluegrass
20# Kentucky Bluegrass
75# Hard Fescue
75# Hard Fescue
25# Rye Grain
10# German or Browntop Millet
500# Fertilizer
500# Fertilizer
4000# Limestone
4000# Limestone
Areas Beyond the Mowing Pattern, Waste and Borrow Areas:
August 1 - June 1
May 1- September 1
100# Tall Fescue
100# Tall Fescue
15# Kentucky Bluegrass
15# Kentucky Bluegrass
30# Hard Fescue
30# Hard Fescue
25# Rye Grain
10# German or Browntop Millet
500# Fertilizer
500# Fertilizer
4000# Limestone
4000# Limestone
Approved Tall Fescue Cultivars
2nd Millennium; Duster; Magellan; Rendition; Avenger; Endeavor; Masterpiece;
Scorpion; Barlexas; Escalade; Matador; Shelby; Barlexas II; Falcon II, III, IV & V;
Matador GT; Signia Barrera; Fidelity; Millennium; Silverstar; Barrington; Finesse H;
Montauk; Southern Choice II; Biltmore; Firebird; Mustang 3; Stetson; Bingo; Focus;
Olympic Gold; Tarheel; Bravo; Grande II; Padre; Titan Ltd; Cayenne; Greenkeeper;
Paraiso; Titanium; Chapel Hill; Greystone; Picasso; Tomahawk; Chesapeake; Inferno;
Piedmont; Tacer; Constitution; Justice; Pure Gold; Trooper; Chipper; Jaguar 3;
Prospect; Turbo Coronado; Kalahari; Quest; Ultimate; Coyote; Kentucky 31; Rebel
Exeda; Watchdog; Davinci; Kitty Hawk; Rebel Sentry; Wolfpack; Dynasty; Kitty
Hawk 2000; Regiment II; Dominion; Lexington; Rembrandt
Approved Kentucky Bluegrass Cultivars:
Alpine; Bariris; Envicta; Rugby; Apollo; Bedazzled; Impact; Rugby II; Arcadia;
Bordeaux; Kenblue; Showcase; Arrow; Champagne; Midnight; Sonoma; Award;
Chicago II; Midnight II
Approved Hard Fescue Cultivars:
Chariot; Nordic; Rhino; Warwick; Firefly; Oxford; Scaldis II; Heron; Reliant II;
Spartan II; Minotaur; Reliant IV; Stonehenge
On cut and fill slopes 2:1 or steeper add 20# Sericea Lespedeza and 15# Crown Vetch
January 1 - December 31.
The Crown Vetch Seed should be double inoculated if applied with a hand seeder.
Four times the normal rate of inoculant should be used if applied with a hydroseeder.
If a fertilizer -seed slurry is used, the required limestone should also be included to
prevent fertilizer acidity from killing the inoculant bacteria. Caution should be used
to keep the inoculant below 80 F to prevent harm to the bacteria. The rates and grades
of fertilizer and limestone shall be the same as specified for Seeding and Mulching.
Fertilizer shall be 10 -20 -20 analysis. A different analysis of fertilizer may be used
provided the 1 -2 -2 ratio is maintained and the rate of application adjusted to provide
the same amount of plant food as a 10 -20 -20 analysis and as directed.
TEMPORARY SEEDING:
Fertilizer shall be the same analysis as specified for Seeding and Mulching and
applied at the rate of 400 pounds and seeded at the rate of 50 pounds per acre.
pp p P P
German Millet, or Browntop Millet shall be used in summer months and rye grain
during the remainder of the year. The Engineer will determine the exact dates for
using each kind of seed.
FERTILIZER TOPDRESSING:
Fertilizer used for topdressing shall be 16 -8 -8 grade and shall be applied at the rate of
500 pounds per acre. A different analysis of fertilizer may be used provided the 2 -1 -1
ratio is maintained and the rate of application adjusted to provide the same amount of
plant food as 16 -8 -8 analysis and as directed.
SUPPLEMENTAL SEEDING:
The kinds of seed and proportions shall be the same as specified for Seeding and
Mulching, and the rate of application may vary from 25# to 75# per acre. The actual
rate per acre will be determined prior to the time of topdressing and the Contractor
will be notified in writing of the rate per acre, total quantity needed, and areas on
which to apply the supplemental seed. Minimum tillage equipment, consisting of a
sod seeder shall be used for incorporating seed into the soil as to prevent disturbance
of existing vegetation. A clodbuster (ball and chain) may be used where degree of
slope prevents the use of a sod seeder.
MOWING:
The minimum mowing height on this project shall be six inches.
SILT FENCE
CONSTRUCTION SPECIFICATIONS:
• The height of a silt fence shall not exceed 24 inches. Storage height and ponding
height shall never exceed 18 inches.
it The fence line shall follow the contour as closely as possible.
• If possible, the filter fabric shall be cut from a continuous roll to avoid the use of
joints. When joints are necessary, filter cloths shall be spliced only at a support
post, with a minimum 4 feet overlap and both ends securely fastened to the metal
post.
• Turn the ends of the fence uphill.
• A trench shall be excavated approximately 4 inches wide and 8 inches deep along
the line of posts and upslope from the barrier.
• Provide a rip rap splash pad or other outlet protection device for any point where
flow may overtop the sediment fence, such as natural depressions or swales.
Ensure that the maximum height of the fence at a protected, reinforced outlet does
not exceed 2 feet and that support post spacing does not exceed 4 feet
• When standard - strength filter fabric is used, a wire mesh support fence shall be
fastened securely to the upslope side of the posts using wire or zip ties (min. tensile
strength of 50 Ibs.). The wire shall extend into the trench a minimum of 2 inches
and shall not extend more than 36 inches above the original ground surface.
• The standard - strength filter fabric shall be zip tied or wired to the fence, and 6
inches of the fabric shall extend into the trench. The fabric shall not extend more
than 36 inches above the original ground surface. Filter fabric shall not be stapled
to existing trees.
• When extra - strength filter fabric and closer post spacing are used the wire mesh
support fence may be eliminated. In such a case, the filter fabric is zip tied or wired
directly to the posts.
• The trench shall be back filled and the soil compacted over the top of the filter
fabric. Thorough compaction of the backfill is critical to the silt fence performance.
• Silt fences placed at the toe of a slope shall be set at least 6 feet from the toe in
order to increase ponding volume.
• Silt fences shall be removed when they have served their useful purpose but not
before the upslope area has been permanently stabilized and any sediment stored
behind the silt fence has been removed.
INSPECTION AND MAINTENANCE:
• Silt fences and filter barriers shall be inspected weekly and after each significant
storm (1/2 inch in 24 hours). Any required repairs shall be made immediately
• Sediment should be removed when it reaches 1.3 height of the fence or 9 inches
maximum.
• Te removed sediment shall conform with the existing grade and be vegetated or
otherwise stabilized.
SAFETY FENCE AND JURISDICTIONAL FLAGGING:
Description
Safety Fence shall consist of furnishing materials, installing and maintaining polyethylene or
polypropylene fence along the outside riparian buffer, wetland, or water boundary, or other
boundaries located within the construction corridor to mark the areas that have been approved to
infringe within the buffer, wetland, endangered vegetation, culturally sensitive areas or water.
The fence shall be installed prior to any land disturbing activities.
Interior boundaries for jurisdictional areas noted above shall be delineated by stakes and highly
visible flagging.
Jurisdictional boundaries at staging areas, waste sites, or borrow pits, whether considered outside
or interior boundaries shall be delineated by stakes and highly visible flagging.
Materials
(A) Safety Fencing
Polyethylene or polypropylene fence shall be a highly visible preconstructed safety fence
approved by the Engineer. The fence material shall have an ultraviolet coating.
Either wood posts or steel posts may be used. Wood posts shall be hardwood with a wedge or
pencil tip at one end, and shall be at least 5 ft. in length with a minimum nominal 2" x 2" cross
section. Steel posts shall be at least 5 ft. in length, and have a minimum weight of 0.85 lb /ft of
length.
(B) Boundary Flagging
Wooden stakes shall be 4 feet in length with a minimum nominal 3/4" x 1 -3/4" cross section.
The flagging shall be at least 1" in width. The flagging material shall be vinyl and shall be
orange in color and highly visible.
Construction Methods
No additional clearing and grubbing is anticipated for the installation of this fence. The fence
shall be erected to conform to the general contour of the ground.
(A) Safety Fencing
Posts shall be set at a maximum spacing of 10 ft., maintained in a vertical position and hand set
all backfill material shall be thoroughly tamped. The tops of all wood posts shall be cut at a 30- degree angle. The wood
posts may, at the option of the Contractor, be cut at this angle either before or after the posts are erected.
The fence geotextile shall be attached to the wood posts with one 2" galvanized wire staple
across each cable or to the steel posts with wire or other acceptable means.
Place construction stakes to establish the location of the safety fence.
The Contractor shall be required to maintain the safety fence in a satisfactory condition for the
duration of the project.
(B) Boundary Flagging
Boundary flagging delineation of interior boundaries shall consist of wooden stakes on 25 feet
maximum intervals with highly visible orange flagging attached. Stakes shall be installed a
minimum of 6" into the ground. Interior boundaries may be staked on a tangent that runs parallel
to buffer but must not encroach on the buffer at any location. Interior boundaries of hand
clearing shall be identified with a different colored flagging to distinguish it from mechanized
clearing.
Installation for delineation of all jurisdictional boundaries at staging areas, waste sites, or borrow pits shall consist of
wooden stakes on 25 feet maximum intervals with highly visible orange flagging attached. Stakes shall be installed a
minimum of 6" into the ground. Additional flagging may be placed on overhanging vegetation to enhance visibility but
does not substitute for installation of stakes.
The Contractor shall be required to maintain alternative stakes and highly visible flagging in a
satisfactory condition for the duration of the project.
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GENERAL NOTES:
1. Erosion control devices should conform with the Erosion and
Sediment Control Design Manual published by NC Department of
Environment and Natural Resources -Land Quality Section and
the specifictions of this plan.
2. Silt Fence should be used instead of brush barriers adjacent
to streams and property lines.
3. All disturbed areas shall be stabilized by the Ground
Stabilization Table provided in this plan.
4. Erosion control devices should be checked at least once a
week and Immediately following a 0.5 inch rain event.
Observations and details of maintenance activities shoulb be
recorded in a log.
5. Repairs to damaged devices or removal of collected silt
should be completed within a reasonable amount of time but
before any forthcoming rain events or damage to adjacent
property.
6. Existing slopes and areas where ground cover is not
established should be reseeded.
7. Installation, maintenance and repair of the erosion control
devices is the sole responsibility of the land owner and
company commencing the land disturbing activity.
8. Grade lot to drain to temporary skimmer basin.
9. Remove basin once ground cover is established.
10. Reinforce silt fence along creek banks with wired mesh or a
second line of silt fence.
11. Borrow source will be from a previously permitted land
disturbing site.
12. Wetland area designation completed by Altamont Environmental,
Inc. February 19, 2014.
13. Comply with NPDES permit NCG01 as described elsewhere.
RACKLEY
DB 828/PG 1979
RHODES
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DAM11UR
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CONCENTRIC OR ECCENI
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BENCH 2' PER FT. SLE
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12 " -24" PIPE
SECTION X -X
GENERAL NOTES;
USE CLASS 'B' CONCRETE THROUGHOUT
y
PR ❑VIDE ALL CATCH BASINS OVER 3' -6' IN
DEPTH WITH STEPS 12' ON CENTER
FOR 8' -0' IN HEIGHT OR LESS USE 6' WALLS
AND BOTTOM SLAB, OVER 8' -0' TO 16' -0' IN
HEIGHT USE 8' WALLS AND BOTTOM SLAB.
ADJUST QUANTITIES ACCORDINGLY,
I,D, /6 MIf
NOT LESS THAN 6"
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NOT LESS THAN 6"
z" PER F ❑ ❑T u; ; ;
BUT NOT LESS THAN 12"
NOR MORE THAN 24"
NORMAL EARTH FOUNDATION
UNSUITABLE MATERIAL FOUNDATION
GROUND LINE
dPACT AFTER
'E IS PLACED
'RI ❑R TO
aCEMENT OF FILL
FILL
GROUND LINE
PACT AFTER
'E IS PLACED
'RI ❑R TO
aCEMENT OF FILL
; ; ; L ENGINEERING FABRIC
GENERAL NOTES:
I.D. = THE MAXIMUM HORIZONTAL INSIDE DIAMETER DIMENSI ❑N
❑,D, = THE MAXIMUM HORIZONTAL OUTSIDE DIAMETER DIMENSI ❑N
H = THE FILL HEIGHT MEASURED VERTICALLY AT ANY POINT
ALONG THE PIPE FROM THE TOP OF THE PIPE TO THE TOP
OF THE EMBANKMENT AT THAT POINT,
D❑ NOT OPERATE HEAVY EQUIPMENT OVER ANY PIPE CULVERT
UNTIL THE PIPE CULVERT HAS BEEN PROPERLY BACKFILLED AND
COVERED WITH AT LEAST 3 FEET OF APPROVED MATERIAL,
LOOSELY PLACED SELECT MATERIAL CLASS III OR CLASS II, TYPE 1
FOR PIPE BEDDING, LEAVE SECTI ❑N DIRECTLY BENEATH PIPE
UNC❑MPACTED AS PIPE SEATING AND BACKFILL WILL ACCOMPLISH
C❑MPACTI ❑N,
SPRINGLINE OF PIPE
SELECT BACKFILL MATERIAL CLASS III OR CLASS II, BELOW
E' E] -El SPRINGLINE
APPROVED SUITABLE LOCAL MATERIAL ABOVE SPRINGLINE
UNDISTURBED EARTH MATERIAL
SELECT MATERIAL CLASS V OR VI FOR FOUNDATI ❑N CONDITIONING,
... ENCAPSULATE WITH ENGINEERING FABRIC
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GENERAL NOTES:
1. Storrs Water control shall control a minimum calculated volume
of 12,487 cf.
2. StormTech MC -3500 Subsurface Storrlwater Management system
shown.
3. Follow manufacturers specifications for installation and
maintenance
4. Final parking lot drainage to be designed by others as part
of site development plan.
5. Special storm water ditch shall be graded to catch basin.
RHODES
DB 814/PG 2303
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DB 828/PG 1979
DAMOUR
DB 396/PG 762
20' SEWER EASEMENT
18' WALKING TRAIL EA�
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NEW CONTOURS ages
EXISTING CONTOUR
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AYNESVILLE
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SCALE:
1 " -50'
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