20200322_Mine_Maps

[VUI Appian Consulting tngineers, Y.A. these drowinq? rtuve uecn i uc ins,?urT16nk6 or service Tor a parcicuior site or Du
and remains the
of the Engineer for use under his supervision. No reproduction or other use is allowed without his permission.
GENERAL NOTES
Last Re ioa Z14120
1. The purpose of this project is the creation of a sand pit mine for use by Lane Farms in an existing agriculture field. All mining operations and access
paths will be on property owned by Lane Farms. The proposed sand mine will have a maximum depth of approximately 10 to 16 feet relative to natural
ground level. The property is adjacent to the existing sand pit operated by S.T. Wooten Corporation (Permit 1i96-55), also on property owned by Lane
Farms. No asphalt, concrete or impervious surfaces are proposed.
2. Approximately 56.94 acres of the 191.53 ac site owned by Lane Farms was recently rezoned for mine pit use (from RA-20 to AI). The rezoning line was
established in the field by Dan Butler, PLS, of Butler Surveying, January 29, 2020. Horizontal Datum Is NAD '83 NC State Plan Coordinates. Vertical
Datum is NAVD 1988.
3. Additional boundary, topographical and adjacent owner information shown is for reference only and was obtained from Wayne County GIS. Land
disturbance within any existing utility and other easements shall be secured by Owner prior to construction.
4. No location of property boundaries, easements, wetland delineation, flood zones or buffers was performed, and must be done by a Professional Land
Surveyor. This document is NOT to be used as a Deed of Easement, nor is it to be construed to permit the location, description, establishment or
reestablishment of property lines or descriptions of land boundaries for conveyance.
S. All materials, construction, workmanship and mining operations shall meet the requirements of Wayne County, NCDEQ and the NC Mining Act of 1971,
latest revisions.
6. Contractor shall comply with all pertinent provisions of the "Manual of Accident Prevention in Construction" issued by AGC of America, Inc., and the
Safety and Health Regulations for Construction issued by the U.S. Department of Labor.
7. No construction or mining operations may begin until an NCDEQ operating permit is received. All mining operations, inspections, reports, etc., shall be
In accordance with the approved permit. NCDEQ Washington Regional Office can be reached at 252-946-6481, contact Samir Dumpor, PE, Regional
Engineer (252.948.3859).
8. EXISTING UTILITIES
a. The Contractor shall be responsible for reviewing and verifying all existing site conditions. Any adverse existing conditions affecting work shown
shall be brought to the attention of the Engineer for possible clarification or reconciliation.
b. Existing utility locations shown are approximate and shall be verified in the field by Contractor prior to beginning work. Contractor shall contact the
811 One Call Center and private utility locating firm for determination of locations of existing utilities minimum 72 hours prior to beginning
construction.
c. THE CONTRACTOR SHALL BE RESPONSIBLE FOR FIELD VERIFICATION OF THE LOCATION AND DEPTH OF ALL UTILITIES AND STRUCTURES WHICH
CROSS THE WORK SITE OR WHICH MAY BE AFFECTED BY HIS OPERATIONS.
d. Contractor is responsible for determination or discovery of existing underground storage tanks (UST), septic tanks, abandoned utility lines, graves,
cemeteries, debris and unclassified fill that may exist on the site.
e. Contractor shall exercise extreme caution when working under, around, and/or adjacent to existing power lines.
9. ENVIRONMENTAL
a. FLOODPLAIN: The site Is located within 300-year Floodplain per FEMA Map 3720.3506.00J, dated 12/02/05. The site drains to the northeast into
agricultural fields or wooded areas toward the Neuse River. Approximately 100-yr flood elevation at this location is 68.4'.
b. No riparian buffers, wetlands or streams are in the project area or will be disturbed for this project.
10. EROSION CONTROL:
a. Contractor is responsible for containing all erosion and sedimentation within the project limits. Maintain site in a condition to prevent mud or
sediment from leaving the construction site.
b. See Erosion Control Narrative and Seeding Notes.
MINE PERMIT NOTES
lost Revised 1r20120 I i
1. No construction or mining operations may begin until an NCDEQ operating permit is received. All mining operations, inspections, reports, etc., shall be
in accordance with the approved permit.
2. All areas within the permitted boundary are owned and maintained by Lane farms, Inc.
3. The proposed sand mine will be constructed using excavators, front-end Ioadors, trucks, etc.
4. Proposed contours shown are approximate and may be field adjusted as coflrdinated with Engineer. However, excavation into the permit 25' internal
buffer or beyond the limits of the permit boundary will require a revised NCDEQ approved Mining Permit.
PROTECTION OF NATURAL RESOURCES:
5. Refer to Construction Sequence and Erosion Control Narrative.
6. Mining operations will not involve washing the material mined, recycling process water, or other waste water handling.
7. Mining operations will not involve discharging fresh or waste water from the mine or plant as a point discharge to the waters of the State.
8. Part of the proposed mine excavation(s) extend below the water table, but no dewatering is proposed. Those areas below the SHWT will be excavated
during drier summer months when the water table is lower. The pit will be graded to divert flow to the centerof the site where the water will pond
until it seeps into the sand. There are no known wells within 500 feet of the proposed excavation area and no residences located within 1,800 feet. The
existing shooting range does not have well or septic, but is served by portably toilet.
9. Mining operations will not involve crushing or any other air contaminant emissions.
10. Dust from stockpiles, haul roads, etc., will be controlled by watering as needed from water truck.
11. A 25-foot unexcavated buffer will be maintained between the mining permit boundary and the area of excavation
12. There are no natural watercourses or wetlands within the permitted boundary,
13. To prevent landslide or slope instability, excavation will occur at 3:1 slopes.
14. See proposed cross sections on the plans.
15. To prevent physical hazard to any neighboring facility, a 4 foot high chain -link fence with gate will be maintainecralong the southern perimeter of the
permit boundary along the existing gravel access road at NC 581. The remaining perimeter of the permit boundary is adjacent to wooded areas or
topography that restricts access. The 58.56 acres is surrounded by the larger 191.53 acres owned by Lane Farms.
16. There are no houses within 300 feet of any proposed excavation, in fact, the nearest residence is more Iran.1,800 feet (Y. mile) from the permit
boundary. The nearest structure is located more than 600 feet from the permitted boundary, and are shelters for the shooting range also located on
the 191.53 acres owned by Lane Farms. The existing 5-acre shooting range is ,eparated from the mine by several existing berms, wooded areas and the
proposed chain -link fence along the access road.
17. There are no known acid producing minerals or soils present at the site.
18. Screening: Much of the site is screened from public view by existing woods. A proposed 4' fence will be insialted.prior to operation along the existing
gravel drive along NC 581.
19. There are no publicly owned parks, forests or recreation areas within sight of the mining operation that would be adversely affected by the sand pit.
The mine will operate during daylight hours, preventing a noise nuisance.
20. No explosives will be used for excavation.
21. No fuel tanks, solvents, or other chemical reagents be stored on -site.
RECLAMATION PLAN
22. No sediment ponds or sediment control basins are proposed on the mine site. The reclamation process will i ude maintaining grassed vegetation
along the buffer area as described in section D-7 of this application. The bottom of the mining pit will fill with At and organic detritus over time and
hold water to a depth of at least 5 feet. The fence installed along the southern perimeter of the permit boundary will remain as a permanent barricade
23. An excavated body of water will be left as a part of the reclamation. Minimum water depth will be at least 5 feet. The body of water will not be stocked
with fish.
24. The fence installed along the southern perimeter of the permit boundary will remain as a permanent barricade
25. No mine waste is planned for this site.
26. No processing facilities are proposed. Topsoil stockpiles will be removed upon completion of the sand pit. Temporary roadway ramps used to access
the excavation area and portions of existing farm paths within the excavation limits will be consumed by mining. With the exception of the existing
gravel access drive along NC $91(located outside the permit boundary), no on -site roadways will remain upon coklpletion of mining operations.
27. No on -site roadways will be left as part of the reclamation.
28. No off -site generated waste shall be disposed of on the mine site without prlQr written approval from the fil"ilivislon of Energy, Mineral, and Land
Resources and eitherthe Division of Waste Management (OWM) or local governing body.
29. Waste products and mine refuse will be hauled off -site to a permitted disposal facility.
30. Refer to Erosion Control Narrative for seeding timeframes and specifications.
NORTH CAR_OLINA
NOT TO SCALE
WAYNE COUNTY
PROJECT"
LOCATION
USGS QUAD MAP
NOT TO SCALE
BILL LANE PIT
2258 BILL LANE BLVD.
GOLDSBORO, N.C. (WAYNE COUNTY)
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NCDOT COUNTY ROAD MAP
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PROJECT CONTACTS
LOCATION INFORMATION
Address
NC 581/ Bill Lane Blvd.
County:
Wayne
State:
NC
Tract Acreage:
191.53 ac
Mine Pit Acreage:
Zone:
58.56 ac
59-64 ac zoned A-1
Wayne County PIN:
' 3517-3157-53
Deed Book/ Page:
DB 1068/ PG 707
Latitude/ Longitude:
35.313893,-77.948056
OWNER/ PERMITEE:
Owner: Awl
Lane Farms, Inc.
Contact:
Mr. Bill Lane
Address n
P.O. Box 1179
Goldsboro, NC 27533
Phone
919.738.9150
Name/ Title
Entity
Phone
Email
Mr. Bill Lane
Lane Farms
919.738.9150
[e-mail]
Owner
Dan Butler, PLS
Butler Surveying
919.922.3368
[e-mail]
Surveyor
Berry Gray
Wayne County
919.731.1650
[e-mail]
Planning Director
5amir Dumpor, PE
NCDEQ DEMLR
252,948,3859
samir.dumpor@ncdencgov
Regional Engineer
Washington Regiona C"Ir_e
Bobby L. Joyner, PE
Appian Consulting Engineers
252.972.7703
bjoyner@appianenii 2rs.corn
President
David C. Revoir, PE
Appian Consulting Engineers,
252.972.7703
[e-mail]
Project Engineer
LEGEND (EXISTING SITE
- - - -- -- - - - Adjacent Property Lines
- - - - - - - - - - - - Building Outline(bidg)
- - - - - - - Buffer Easement
- - - - - - - - - - - - - - - Centerline (as Noted)
ro -- - Chain
_________= Ex. Curb &Gutter
Ex. Contour
Topographic Elevation
- - - - Ditch
- - - - - - - Easement (esm't)
- Floodway Line
500 Yr Flood
-- ---- -- - - -- -- 100YrFlood
- -- -- --- Fence (as Noted)
---------------------- Edge Gravel/Soil
- - - - - - - Edge Pavement (ep)
- - - -4_14- - - - Right-of-way
Shrub Limits
Tree/woods Limits
- - - Edge Water
- - - - - Edge Wetlands
Zoning Line
ee mun ex mail box
ex. s;v" m- ex sign (as noted)
LEG-_ND,!EX,ISTING UTILITIES)
LEGEND (CONSTRUCTION)
FUTURE OBJECTS (AS NOTED)
-- - -
- Fence (as Noted)
- CENTERLINE (SEE PLANS)
Fiber Optics Line
- - - -DITCH
- -
Force Main
- _ - - _ - _ _ _ _ EASEMENT (AS NOTED)
-- ---- - -
- Gas
- ` - -
O.H. Power
Lop LIMITS OF DISTURBANCE
-
Guy Wire
- - - - - - PROPERTY LINE (NO SURVEY)
O.H. Electric
N33'33'33"E 333' PROPERTY LINE (SURVEYED)
`- - - -
- U.G. Electric
- - - - - - - - - - RIGHT-OF-WAY
- - -
San Sewer (As Noted)
- - - - - -
- Telecommunications
- - - - - - - - - CENTERLINE (AS NOTED)
-un- -
U.g. Telecommunications
Utility (as Noted)
ELEV. -. CONTOUR (ELEV. AS NOTED)
- -
Unknown Utility Line
EDGE WATER BODY
- -
Water Line
CH. LK. FENCE (AS NOTED)
Power Pole
CAUTION: POWER IN AREA
BEFORE YOU DIC,
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ONE -CALL CENTER
www. ncocc,org
Guy Wlre A
Light Pole �, CAUTION: HIGH REPAIR COST
Utility Pole !� IMPORTANT INFORMATION
Fiber Optic Monument
Telecommunications Pedestal CAUTION: / IMPORTANT
" Fire Hydrant Final DrawingsA
Ai DO NOT DISTURB
Water Meter Review Purposes ONLY
Water Valve
Post Indicator Valve ,taint
Plug With Blocking "'00% Cg 1 "ire,,
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CIVIL, MUNICIPAL & STRUCTURAL ENGINEERS
COMPREHENSIVE ENVIRONMENTAL SERVICES
REVISIONS
APPIAN CONSULTING ENGINEERS, P.A.
154 Roundabout Ct., Rocky Mount, N.C. 27804
Phone: [phone]
Email: admin0appionengineers.com
World Wide Web: www.appionengineers.com

C-oG vright 2011 Appian
Consulting
Engineer-r..
-.A. These drawings have been
prepared
as instruments of service for a particular
site or building
improvement and remains
the property
of the Engineer for use under his supervision.
No reproduction or other use is allowed without his pe
BOUNDARY DESCRIPTION SHOWN -
IS NOT FOR RECORDATION.
RECORD DRAWINGS:
These drawings are believed to be a correct
representation of actual field conditions but
are not warranted as such.
By: Date:
CONSTRUCTION SAFETY
These drawings do not contain the requirements for
job safety. All provisions for safety shall be the sole
responsibility of the contractor.
EXISTING CONDITIONS:
The contractor shall be responsible for reviewing all
existing job conditions. Any adverse existing conditions
affecting work shown on these drawings shall be
brought to the attention of the engineer for possible
clarification or reconciliation.
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BEFORE YOU DIG,
CALL
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NORTH CAROLINA
ONE -CALL CENTER
IT www.ncocc.org
These plans are for bid
are not to be used as -••--••- -•-- •• ,-
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Construction below by file Engineer.
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LOD AS SHOWN
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RECORD DRAWINGS
These drawings are believed to be a correct
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l Date:
CONSTRUCTION SAFETY
These drawings do not contain the requirements for
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LENGTH = 650' PER r,oao S.F. \\ LENGTH SLOPE = 0 5%
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These drawings are believed to be a correct
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By- Date;
CONSTRUCTION SAFETY
These drawings do not contain the requirements for
lob safet All rovisians for safety shall be the sole
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EXISTING CONDMONSI unless initialed rind dated as approved for - ------------
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existing job conditions. Any adverse existing conditions --- - = -- - --'
affecting work shown on these drawings shall be Approved for Construction: __ _ '` -y r
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2011 Appian Consulting Engineers, PA. These drawings have been
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BOUNDARY DESCRIPTION SHOWN
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RECORD DRAWINGS:
These drawings are believed to be a correct
representation of actual field conditions but
are not warranted as such.
By: Date:
CONSTRUCTION SAFETY
These drawings do not contain the requirements for
job safety. All provisions for safety shall be the sole
responsibility of the contractor.
EXISTING CONDMONS:
The contractor shall be responsible for reviewing all
existing job conditions. Any adverse existing conditions
affecting work shown on these drawings shall be
brought to the attention of the engineer for possible
clarification or reconciliation.
CATEGORY
AFFECTED ACREAGE
Tailings/Sediment Ponds
-
Stockpile
1.0 act
(in buffer and mined area)
Wastepiles
-
Processing Area/Haul Roads- BUFFER
4.45 ac
Mine Excavation
54.11 ac
Other (Explain)
-
Total Disturbed Acreage
58.56 ac
PIN: 3516295598
CASET JONNNIE MCNS i
600 NANDLEY ACRES DR.
GOLDSBORO N.C. 27534-17o,
Deed Book 2049 Page 30
AUC& 135.0
These plans are for bidding purposes only and
are not to be used as Construction drawings
unless initialed tend dated as approved for
Construction below by the Engineer.
Approved for Construction:
Date:
p 77
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PROPOSED CONTOURS SHOWN ARE APPROXIMATE AND MAY
BE FIELD ADJUSTED AS COORDINATED WITH ENGINEER.
HOWEVER, EXCAVATION INTO THE PERMIT 25' INTERNAL
BUFFER OR BEYOND THE LIMITS OF THE PERMIT BOUNDARY
WILL REQUIRE A REVISED NCDEQ APPROVED MINING PERMIT.
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CIVIL, MUNICIPAL &
STRUCTURAL ENGINEERS
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154 Roundabout Ct.
P.O. Box 7966
Rocky Mount, N.C. 27804
Phone: [phone]
www.appionengineers.com
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1" = 10' VER
CROSS SECTION 1-1
NORTH TO SOUTH
00+00 01+00 02+00 03+00 04+00 05+00 06+00 07+00 08+00 09+00 10+00 11+00 12+00 13+00 15+00 16+00 17+00 18+00 19+00 20+00
LEGEND
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PRO GRADE
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BOUNDARY DESCRIPTION SHOWN
IS NOT FOR RECORDATION.
RECORD DRAWINGS: BEfoRCALL DIG,
These drawings are believed to be a correct ,
representation of actual field conditions but
are not warranted as such.
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By: Date: NORTH
CONSTRUCTION SAFETY ONE -CALL ACLINA
ONTER
These drawings do not contain the requirements for www.ncocc.org
job safety. All provisions for safety shall be the sole
responsibility of the contractor. These plans are for bidding purposes only and
are not to be used as Construction drawings
EXISTING CONDITIONS: unless initialed cr i dated as approved for
The contractor shall be responsible for reviewing all Construction below by the Engineer.
existing job conditions. Any adverse existing conditions
affecting work shown on these drawings shall be Approved for Construction:
brought to the attention of the engineer for possible Date:
clarification or reconciliation.
CONSTRUCTION SEQUENCE
kevlsed 240120
1, Obtain copy of approved permits prior to disturbing site. Retain copy of all the following approved
permits on site, Prior to construction the Contractor shall install a permit box on site in a conspicuous
place, which should contain;
a. Set of complete construction plans
b. NCDEQ Mine Permit
c. Self -Inspection Reports
d. Rain gauge
2. Contractor is to notify Owner, Engineer, and NCDEQ Washington Regional Office at 2S2.948.3859 at
least 48 hours prior to starting work. Erosion control is under the jurisdiction of the NCDEQ Land Quality.
This site is subject to erosion control provisions and the Contractor is responsible for containing all
erosion and sedimerrtation within the project limits.
3. To notify of project startup, Contractor to call NCDEQ DEMLR 252.948.3859, Pre -Con may be requested at
NCDEQ option. All applicable E&S control must be maintained until a vigorous stand of permanent
ground cover is established. Any additional land disturbing activities outside limits of disturbance must be
addressed in a revised E&S control plan.
4. Contractor shall contact the 811 One Call Center for locations of existing utilities 72 hours prior to
beginning construction (1-800-632-4949).
5. ACCESS TO PROPERTY: All construction traffic is to access the site from the existing gravel driveway on
NC 581. At the edge of existing gravel, supplement existing gravel as needed to comply with temporary
construction entrance as shown per Detail 106.01. Maintain construction site in a condition to prevent
mud or sediment from leaving the construction site. Mud and dirt tracked into the paved areas must be
removed immediately.
6. No disturbance shall occur within wooded areas, riparian buffers, streams or wetlands. No tree removal
is proposed for this project.
7. PRIOR TO SITE DISTURBANCE: INSTALL PERIMETER MEASURES
a. Contractor to have professional land surveyor (PIS) locate permit boundary with permanent markers
as required by NCDEQ Mine Permit. Markers/stakes shall not be disturbed during construction.
b. Install check dams in existing ditch along NC 581 as shown.
c. Install silt fencing (Detail 101.01) and silt fence relief points (per Detail 101.02) along Limits of
Disturbance as shown.
d. To collect sediment during grading operations, excavate Temporary Skimmer Sediment Basins with
baffles as shown (Details 104.09,102.11). If Owner chooses to proceed in phases, he must coordinate
with Engineer.
1. Minimum dimensions shown must be provided.
It. Install rock pad for skimmer to rest upon and rope attachment for maintenance.
iii. Install coir baffles as shown, or field adjust as necessary with approval from Engineer.
iv. Extend rip rap dissipators at the skimmer outlet to the limits of disturbance.
v. Surround basins with silt fence on three sides and install silt fence relief point at the base of each
dissipator.
vi. Tie silt fence into dissipator apron or check dam and turn ends uphill to form sediment pocket.
vii. SPILLWAY LINER: Contractor to use low permeability, woven polypropylene geotextile for
spillway liner per NCDOT Specs Sec.1056 (Type 4 geotextile). Unroll the geotextile on the spillway
in the direction of flow, with edges buried at least 6 inches. Geotextile to be one continuous
piece of material or overlapped a minimum of 18 inches.
e. Install Temporary Diversion Ditches (Detail 103.07) to direct sediment -laden runoff to Temporary
Skimmer Basins. Ensure ail runoff from disturbed areas flows to basin. Ensure stable transition from
diversion to toe of basin slope, using fiberglass netting or rip rap, if required. Install coir fiber matting
per Detail 103.09 all temporary ditches.
8. CONTRACTOR IS TO CONTACT ENGINEER AFTER PERIMETER EROSION CONTROL MEASURES ARE
INSTALLED PRIOR TO PROCEEDING WITH SAND PIT EXCAVATION. After approval from Engineer is
received, Contractor may continue operations.
9. Begin removal of all topsoil, rootmat and questionable organic material. Topsoil and construction debris
shall be stockpile onsite or disposed of in properly permitted landfill, unless otherwise approved.
10. STOCKPILES: Contractor is to stockpile topsoil and unclassified material as shown on the plans unless
otherwise approved by Owner and Engineer. Maximum height of stockpile is 15 feet with a 2:1 side slope.
Prior to any land disturbance in stockpile areas, Contractor is to install silt fence around perimeter to
maintain sediment and turn ends uphill to form sediment pocket. Contractor to follow seeding schedule
in Erosion Control Narrative. Install silt fence along downhill sides of stockpile areas. Install silt fence
relief point in the shape of a "1-hook" to facilitate relief of runoff.
11. Stabilize stockpile within the timeframes provided in the Erosion Control Narrative and approved permit.
Soil stabilization Is defined as vegetative, physical or chemical coverage techniques that will restrain
accelerated erosion on disturbed soils for temporary or permanent control needs.
12. EXCAVATION: Proceed with sand pit excavation with maximum slopes of 3:1. Maintain 25' unexcavated
buffer from the permit boundary.
13. If concrete is to be used onsite, install concrete washout with sign per detail to contain concrete and
liquids when concrete vehicles are rinsed after delivery. Concrete washout structures must be installed
50 feet or more from surface water and drain inlets. NO CONCRETE IS PROPOSED FOR THIS PROJECT.
14. If Contractor exceeds limits of disturbance, a revised Erosion Control Permit will be required from NCDEQ
Revised E&S plan, permit and/or violation fees will be at Contractor's expense.
15. ANY AREA THAT IS NOT EXPECTED TO BE DISTURBED WITHIN 7 DAYS SHALL RECEIVE TEMPORARY
SEEDING.
16. SEEDING:
a. Refer to seeding schedule in Erosion Control Narrative.
b. Permanent groundcover shall be established within 15 working days or 90 calendar days, whichever is
shorter. However, NPDES groundcover requirements take precedence.
c. Permanently seed areas that will not be re -disturbed. DO NOT ALLOW ANY DISTURBED AREAS TO
REMAIN DISTURBED ANY LONGER THAN NECESSARY and do not remove protection devices until
adequate ground cover has been achieved.
17. All applicable E&S control must be maintained until a vigorous stand of permanent ground cover is
established. Any additional land disturbing activities outside limits of disturbance must be addressed in a
revised E&S control plan.
18. Contractor to install seeding on all disturbed areas per seeding specifications in the Erosion Control
Narrative. Contractor to ensure a vigorous stand of vegetation and maintain all ESC devices prior to final
acceptance by the City.
19. The Contractor shall maintain erosion control measures on a coil basis. These items will only be paid for
once. Maintenance shall be an incidental to installation. The Contractor is responsible for any sediment
that leaves the site and any associated clean up and fines issued by NCDEQ.
20. If erosion and sedimentation control measures shown on the plans prove insufficient, Contractor is to
take additional steps to stop sediment from leaving this site. Adequate and appropriate measures must
be properly installed within the limits of disturbance to prevent sediment from leaving the site, entering
existing drainage systems, and impacting natural watercourses or adjoining property.
21. Contractor is responsible to inspect all erosion control measures and fill out NPDES general stormwater
permit inspection log weekly and/or after every half itch of rainfall. A rain gage must be kept onsite.
Contractor must keep records of these inspections, and submit with Requests for Payments.
22. NCDEQ SELF -INSPECTION PROGRAM: Contractor is required to document the installation and
maintenance of erosion and sedimentation control measures according to the approved plan. The
inspections should be conducted after each phase of construction and continued until permanent ground
cover is established. Site Contractor is to keep forms onsite in the permit box and updated regularly.
23. Maintain seeding and erosion control measures as described in the narrative.
24. SKIMMER SEDIMENT BASIN REMOVAL PROCEDURE
a) Sediment basins should remain in place until a vigorous stand of permanent ground cover is
established across the site, as approved by Engineer.
b) Upon direction of Engineer prior to removal of sediment basin, install check dam per Detail 104.01
below sediment basin at lowest limits of disturbance. Add additional silt fence at lowest limits of
disturbance as needed and directed. Turn ends of silt fence uphill to form sediment pocket.
c) Remove sediment and water from basin prior to dam removal. Sediment should be placed in
designated disposal areas onsite and not allowed to flow into streams or drainage ways during dam
removal. Install permanent seeding and additional silt fence if needed. If necessary, use dewatering
bag per Detail 104.07 as directed by Engineer.
d) Smooth the basin site to blend with surrounding area, grade to match existing ditch section and install
permanent seeding. Check dam should remain until channel is permanently stabilized with vegetation.
e) Along Temporary Diversion to the temporary skimmer sediment basins, blade diversion soil back into
diversion swale, filling in the ditch.
f) Place silt fence if necessary on the lowest limits of disturbance to retain sediment on site. Place
permanent vegetation.
25. After approval from the Engineer, install permanent vegetation on any remaining disturbed areas and
remove all remaining temporary measures only when a vigorous stand of permanent ground cover is
established.
26. Maintain seeding and erosion control measures as described in the narrative.
27. Notify NCDEQ that site is stabilized. When excavation of the entire sand pit mine is complete, follow
reclamation plan and close-out procedures a; described on the NCDEQ Mine Permit.
FC O 1 WE
CONSULTING ENGINEERS, P.A.
CIVIL, MUNICIPAL &
STRUCTURAL ENGINEERS
BLN = C0562
154 Roundabout Ct.
P.O. Box 7966
Rocky Mount, N.C. 27804
Phone: [phone]
www.appianengineers.com
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t 2011 Appian Consulting Engineers, P.A. These drawings have been „repared as instruments of service for a
icuiar site or bull
t and remains the property of the Engineer for use under his supervision. No
on or other use is chowec without his permission.
EROSION AND SEDIMENTATION CONTROL NARRATIVE
Last Revised 214120
1. PROJECT DESCRIPTION
A. The purpose of this project is the creation of a private sand pit mine for use by Lane Farms in an
existing agriculture field. The property is adjacent to the existing sand pit operated by S.T. Wooten
Corporation (Permit #96-55), which is also on property owned by Lane Farms.
B. OWNERSHIP: All mining operations and access paths will be an property owned by Lane Farms on
NC Hwy 581(Bill Lane Blvd) just south of Goldsboro in Wayne County, NC.
C. Mining operations are is scheduled to begin in May 2020. The owner plans to prepare areas of
approximately 10-acres at a time for sand pit excavation. The erosion and sediment control
program for this project will include a construction entrance, temporary diversion ditches, grassed
swales, silt fence, silt fence outlets, skimmer sediment basin with baffles, outlet protection and
temporary and permanent seeding of the site.
D. CALCULATIONS: The practices utilized for the proposed site did require formal calculations.
II. EXISTING SITE CONDITIONS
Approximately 56.94 acres of the 191.53 ac site owned by Lane Farms is being rezoned for mine pit
use. The proposed sand mine will have a maximum depth of approximately 12 to 16 feet relative to
natural ground level, The site is being rezoned to industrial (A-1) in Wayne County, North Carolina.
A. FLOODPLAIN: The site is located within 100-year Floodplain per FEMA Map 3720.3506.00.1, dated
12/02/05. The site drains to the northeast into agricultural fields or wooded areas toward the
Neuse River. Approximately 100-yr flood elevation at this location is elevation 68.
B. No riparian buffers, wetlands or streams are in the project area or permit boundaries or will be
disturbed for this project.
C. STORMWATER: No impervious surfaces are proposed for this project.
D. All existing ditches on this site are to be left undisturbed by the proposed development unless
otherwise noted. The removal of vegetation within any existing ditch or channel is prohibited
unless the ditch or channel is to be regraded with side slopes of 2:1 max. Bank slopes may be
mowed, but stripping of vegetation is considered new earthwork and is subject to the same
erosion control measures as new ditches [NCGS 113A-52(6)].
III. ADJACENT PROPERTY
All adjacent property lines and property Owners are shown on the site plan, with seasonal high water c
table at approximately SO ft below natural grade.
IV. SOILS
The soils at this site are sandy. The site is located inside the "oxbow" of the Neuse River.
1 V. EROSION AND SEDIMENT CONTROL MEASURES
II vegetative and structural er
osion and sediment control
practices shall be constructed and
A
8
maintained by the Contractor according to these plans and specifications and the minimum standards
Quality NCDE Land Quality
of Wayne County and North Carolina Department of EnvironmentalQ ty ( Q), 4 ty
Section. The Contractor shall also follow any additional requirements as outlined by the Project
Engineer.
BEFORE YOU DIG,
CALL
4f
7
NORTH CAROL INA
ONE -CALL CENTER
www.ncocc.org
A. STRUCTURAL PRACTICES
1. The Contractor is responsible for securing a material lay down and stockpile storage area for
this contract. As such, the contractor is responsible for the necessary erosion control
measures, including but not necessarily limited to, a construction entrance, silt fertGe,
protection of streams/buffers, clean up and restoration of site to the satisfaction of both the
owner, Engineer and NCDEQ
2. Vehicle wheels shall be clean when leaving the site to prevent the tracking of mud on paved
roads.
3. Construction Entrance Stabilization: Construction traffic shall be limited to stabilized areas.
Maintain existing gravel areas in a condition to prevent mud or sediment from leaving the
construction site. 1
4. Rock Check Dam: install as shown on plans and maintain per detail 104.02.
S. Silt Fence: Silt fences shall be provided where shown and as needed on the site plan. These
barriers shall be used to contain sediment.
6. Silt Fence Relief Points shall be provided where shown.
7. Temporary Diversions: All temporary diversions shall receive ditch liner and seeding WITHIN 7
DAYS of ditch installation.
8. Grassed -Lined Channels, Temporary Ditch Liner: Ditch liner shall be Curlex I CL excelsior
wood fiber erosion control blanket (NCDOT Approval NP02-4029), or approved equal. The p
side of the temporary, biodegradable blanket (non -seeded) shall be covered v*h
polypropylene netting. The blanket shall have the following characteristics: fiber ccuGt=
4,800/sy; mass= 0.55 Ib/sy; net openings= 1.0" x 2.0"; permissible shear stress= 1.60 Ibs*f;
maximum permissible velocity= 5.0 fil functional longevity= 15 months±.
9. Armor Protected Ditch Liner: In locations shown, place rip rap armor over a blanket of 4fi
14ON filter fabric, or other approved substitute. Stone shall be the size and/or class shown on
the plans.
10. Outlet Protection: in locations shown, place rip rap armor over a blanket of Mirafi 140 N fi r
fabric, or other approved substitute. Stone shall be the size and/or class shown on the plan
11. Seeding to be installed per details.
B. VEGETATIVE PRACTICES
1. Refer to Stabilization Timeframe Table.
The timeframes shown below govern over any other less stringent note on the plans or
specifications for this contract.
STABILIZATION TIMEFRAMES TABLE
Perimeter Dikes, Swales, Ditches and Slopes 7 days None
'iHigh Quality Water (HWQ) Zones 7 days None
If slopes are 10' or less in length ant
Slopes Steeper than 3:1 7 days are not steeper than 2:1, then
- s 14 days are allowed
f 7 days for slopes greater than SO in
Slopes 3:1 or flatter 10, days length
None,
Ail other areas with slopes flatter than 4 1 14 days
1_ except for perimeters and HOW Zell,
CONSTRUCTION SAFETY
These drawings do not contain the requirements for
job safety. All provisions for safety shall be the sole
responsibility of the contractor.
EXISTING CONDITIONS:
The contractor shall be responsible for reviewing all
existing job conditions. Any adverse existing conditions
affecting work shown on these drawings shall be
brought to the attention of the engineer for possible
clarification or reconciliation.
3
2. Permanently seed areas that will not be re -disturbed. Do not allow any disturbed areas to
remain disturbed any longer than necessary and do not remove protection devices until
adequate ground cover has been achieved. Note that the time for establishment of
permanent ground cover is 14 calendar days.
C. MANAGEMENT STRATEGIES
1. Contractor is to notify the Engineer and NCDEQ at least 72 hours prior to starting work.
2. Perimeter measures are to be installed prior to grubbing or grading.
3. Tail Ditches shall be stabilized immediately following their construction. As an alternate, rock
check dams may be provided at their outlets and/or the terminal downstream end of
disturbance until ground cover is implemented.
4. Stockpile and/or waste areas must be maintained within the limits of the areas protected by
the proposed measures and otherwise temporarily seeded if to be left stockpiled over 14 days.
S. Construction shall be planned so that grading operations can begin and end as quickly as
possible.
6. Silt Fences shall also be installed prior to or as a first step in construction.
7. The Contractor shall be responsible for the installation and maintenance of all erosion and
sediment control practices.
D. VEGETATIVE GROUND COVER
Immediately following grading, all areas shall receive either permanent or temporary seeding, as
applicable, as follows:
Fertilizer:
10-10-10 @ 20#/1000 SF, plus
Lime:
100#/1000 SF, plus
Mulch:
Straw @ 95#/1000 SF, plus
Tack:
400 gallons/Ac on all mulching
E. SEED BED PREPARATION
1. The soil shall be scarified or otherwise loosened to a depth of not less than 5 inches except as
otherwise directed by the Engineer. Clods shall be broken and the top three inches of soil shall
be worked into an acceptable seedbed by the use of soil pulverizers, drags, or harrows.
2. On 2:1 slopes a seedbed preparation will be required that is the same depth as that required
on flatter areas, although the degree of smoothness may be reduced from that required on
the flatter areas.
3. Seedbed preparation within two feet of the edge of any pavement shall be limited to a depth
of two to three inches.
f seedbeds shall not be done when The preparation o ee beds En the soil is frozen, extremely wet, or when
in determines that it i in an otherwise e Engineer determ scondition.
th unfavorable working
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5. Before mulch is applied, the Contractor shall remove and dispose of all exposed stones in
excess of one inch in diameter and all roots or other debris which prevent proper contact of
the mulch with the soil. Segregation of exposed stone under one inch shall be avoided and, if
found, dispersed or disposed of at the direction of the Engineer.
VI. MAINTENANCE
The Contractor is responsible for control of sediment on site until the project is handed over to the
Owner. If erosion and sedimentation control measures shown on the plans prove insufficient,
additional steps must be taken to stop sediment from leaving this site. Adequate and appropriate
measures must be properly installed within the limits of disturbance to prevent sediment from leaving
the site, entering existing drainage systems, and impacting natural watercourses or adjoining property.
Each sediment storage device must be inspected after each storm event. Maintenance and/or
cleanout is necessary anytime the device is at 50% capacity. All sediment storage measures will
remain on site and functional until all grading and final landscaping of the project is complete. Specifc
maintenance requirements are shown below:
A. DENUDED AREAS/GRADING:
1. Periodically, check all graded areas and the supporting erosion and sedimentation control
practices, especially after heavy rainfalls.
2. Promptly remove all sediment from diversions and other water -disposal practices.
3. If washouts or breaks occur, repair them immediately.
4. Prompt maintenance of small eroded areas before they become significant gullies is an
essential part of an effective erosion and sedimentation control plan.
B. CONSTRUCTION ENTRANCE
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 structure used to trap sediment and clean it out as necessary.
Immediately remove all objectionable materials spilled, washed, or tracked onto public
roadways.
C. ROLLED EROSION CONTROL PRODUCTS
1. Inspect Rolled Erosion Control Products at least weekly and after each significant (1/2 inch or
greater) rain fall event repair immediately.
2. Good contact with the ground must be maintained, and erosion must not occur beneath the
RECP.
3. Any areas of the RECP that are damaged or not in close contact with the ground shall be
repaired and stapled.
4. If erosion occurs due to poorly controlled drainage, the problem shall be fixed and the eroded
area protected.
5. Monitor and repair the RECP as necessary until ground cover is established.
D. TEMPORARY DIVERSIONS
1. Inspect temporary diversions once a week and after every rainfall. Immediately remove
sediment from the flow area and repair the diversion ridge.
2. Carefully check outlets and make timely repairs as needed.
3. When the area protected is permanently stabilized, remove the ridge and the channel to blend
with the natural ground level and appropriately stabilize it.
E. PERMANENT DIVERSIONS
1. Inspect permanent diversions after every rainfall during the construction operation.
Immediately remove any obstructions from the flow area, and repair the diversion ridge.
These plans are for bidding purposes only and
are not to be used as Construction drawings
unless initialed and dated as approved for
Construction below by the Engineer.
Approved for Construction:
Date:
RECORD DRAWINGS:
These drawings are believed to be a correct
representation of actual field conditions but
are not warranted as such. r BOUNDARY DESCRIP-nON SHOWN
By: Date: 1 IS NOT FOR RECORDATION.
2. Check outlets, and make timely repairs as needed.
3. Maintain the vegetation in a vigorous, healthy condition at all times.
F. GRASS -LINED CHANNELS
1. During the establishment period, check grass -lined channels after every rainfall. After grass is
established, periodically check the channel; check it after every heavy rainfall event.
Immediately make repairs.
2. It is particularly important to check the channel outlet and all road crossings for bank stability
and evidence of piping or scour holes.
3. Remove all significant sediment accumulations to maintain the designed carrying capacity.
4. Keep the grass in a healthy, vigorous condition at all times, since it is the primary erosion
protection for the channel.
G. ROCK -LINED CHANNELS
1. Inspect channels at regular intervals as well as after major rains, and make repairs promptly.
Give special attention to the outlet and inlet sections and other points where concentrated
flow enters.
2. Carefully check stability at road crossings, and look for indications of piping, scour holes, or
bank failures. Make repairs immediately.
3. Maintain all vegetation adjacent to the channel in a healthy, vigorous condition to protect the
area from erosion and scour during out -of -bank flow.
4. Riprap should be inspected after every significant rainfall event periodically for scour or
dislodged stones. Ensure good control of weeds and vegetation.
H. OUTLET PROTECTION
1. Inspect riprap outlets 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.
I. HORSEHOE ROCK PIPE INLET PROTECTION
1. aka ROCK PIPE INLET SEDIMENTTRAP TYPE A/B (NCDOT 1635.01, 1635.02)
2. Inspect rock pipe inlet protection at least weekly and after each significant (% inch or greater)
rainfall event and repair immediately.
3. Remove sediment and restore the sediment storage area to its original dimensions when the
sediment has accumulated to one-half the design depth of the trap. Place the sediment that is
removed in the designated disposal area and replace the contaminated part of the gravel
facing. Check the structure for damage. Any riprap displaced from the stone horseshoe must
be replaced immediately.
4. After all the sediment -producing areas have been permanently stabilized, remove the
structure and all the unstable sediment, Smooth the area to blend with the adjoining areas
and provide permanent ground cover.
J. SEDIMENT FENCE/ SILT FENCE
1. Inspect at least weekly and after each significant (1/2 inch or greater) rainfall event and repair
immediately.
2. Should the fabric of a sediment fence collapse, tear, decompose or become ineffective,
replace it promptly.
3. Removed sediment deposits as necessary to provide adequate storage volume for the next
rain and to reduce pressure on the fence. Take care to avoid undermining the fence during
cleanout.
4. Remove all fencing materials and unstable sediment deposits and bring the area to grade and
area has been properly stabilized.
stabilize it after the contributing drainage p p y
K. SILT FENCE OUTLET
1. Inspect at least weekly and after each significant (1/2 inch or greater) rainfall for damage and
sediment accumulation to confirm device is working properly.
2. At a minimum, remove sediment when accumulation reaches half the height of sediment
control stone.
3. Replace or clean sediment control stone as needed to allow water to drain through the device
between rainfall events.
4. Rebuild and/or repair the device when damaged.
5. Repair areas that become undermined due to concentrated flows.
6. Remove all fencing materials and unstable sediment deposits and bring the area to grade and
stabilize it after the contributing drainage area has been properly stabilized.
L. SKIMMER SEDIMENT BASIN (no riser)
1. Inspect basin at least weekly and after each significant (1/2 inch or greater) rainfall event and
repair immediately. Remove sediment and restore original volume when sediment
accumulates to about one-half the design volume. Sediment should be placed above the basin
and adequately stabilized.
2. Pull the skimmer to one side so that the sediment underneath it can be excavated. Excavate
sediment from the entire basin, not just around the skimmer or the first cell. Make sure
vegetation growing in the bottom does not hold down the skimmer.
3. Repair the baffles if they are damaged. Re -anchor baffles if water is flowing underneath or
around them.
4. If the skimmer is clogged with trash and there is water in the basin, usually jerking on the rope
will make the skimmer bob up and down and dislodge the debris and restore flow. if this does
not work, pull the skimmer over to the side and remove debris. Also, check the orifice inside
the skimmer to see if it is clogged; if so remove debris.
5. If the skimmer arm or barrel pipe is clogged, the orifice can be removed and obstruction
cleared with a plumber's snake or by flushing with water. Be sure and replace the orifice
before repositioning the skimmer.
6. Check the embankment, spillways, and outlet for erosion, piping, and settlement and repair
immediately. Remove all trash and other debris from the skimmer and pool areas.
7. Remove the structure and any unstable Sediment immediately after the construction site has
been permanently stabilized. Smooth the basin site to blend with the surrounding area and
stabilize. All water and sediment should be removed from the basin prior to dam removal.
8. Sediment should be placed in designated disposal areas and not allowed to flow into streams
or drainage ways during structure removal.
M. BAFFLES
1. Inspect baffles at least once a week and after each rainfall. Make any required repairs
immediately.
2. Be sure to maintain access to the baffles. Should the fabric of a baffle collapse, tear,
decompose, or become ineffective, replace it promptly.
3. Remove sediment deposits when it reaches half full, to provide adequate storage volume for
the next rain and to reduce pressure on the baffles.
4. Take care to avoid damaging the baffles during cleanout, and replace if damaged during
cleanout operations. Sediment depth should never exceed half the designed storage depth.
S. After the contributing drainage area has been properly stabilized, remove all baffle materials
and unstable sediment deposits, bring the area to grade, and stabilize it.
N. CHECK DAM
1. Inspect at least weekly and after each significant (1/2 inch or greater) rainfall event and repair
immediately. Remove sediment, straw, limbs, or other debris that could clog the channel when
needed.
VII.
2. Anticipate submergence and deposition above the check dam and erosion from high flows
around the edges of the dam. Correct all drainage immediately. If significant erosion occurs
between dams, additional measure can be taken such as installing protective riprap liner in
that portion of the channel.
3. Add stones to the dam as needed to maintain design height and cross section.
4. All stone armor protection is to fit contour of channel. Do not dump but hand spread.
S. Remove sediment accumulated behind the dams as needed to prevent damage to channel
vegetation, allow the channel to drain through the stone check dam and prevent large flows
from carrying sediment over the dam. Place rock from rock check dams and temporary
sediment traps in roadside ditch as armor protection. Do not dispose of rock.
O. DUST CONTROL: Maintain dust control measures through dry weather periods until all disturbed
areas have been stabilized.
P. DEWATERING BAG (if used)
1. Aka "Special Stilling Basin," per NCDOT 1630.06
2. inspect dewatering bag daily and after significant (1/2 inch or greater) rainfall events to see if
any erosion around or below the bag has taken place, or if bag is leaking or has been
dislodged.
3. Immediately make all needed repairs to prevent further damage.
4. Replace and dispose of the bag when it is % full of sediment or when it is impractical for the
bag to filter the sediment out at a reasonable rate. Prior approval from Engineer shall be
received before removal and replacement.
Q. SEEDING:
S. Reseed and mulch bare spots larger than 9 square feet (limited to 5% maximum of site area.)
6. Maintain all seeded areas until uniform stand is acceptable.
7. If growth is not established by final project inspection, continue specified attention until the
stand is acceptable.
8. Correct and repair all undue settling and erosion within 1 year after final inspection.
9. Remove from the site, all erosion control structures after complete stabilization at end of
construction period.
OWNER/OPERATOR
Lane Farms, Inc.
Attn: Bill Lane
P.O. Box 1179
Goldsboro, NC 27533
919.738.9150
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CONSULTING ENGINEERS. P.A.
CIVIL, MUNICIPAL &
STRUCTURAL ENGINEERS
BLN = C0562
154 Roundabout Cf.
P,Q. Box 7966
Rocky Mount, N.C. 27804
Phone: [phone]
www.appionengineers.com
[e-mail]
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t 2011 Appian Consulting Engineers, P.A. These drawings have been
os instruments of service for a
site or building improvement and remains the property of the Engineer for use under his sv.pervision. No reproduction or other use is allowed without his pf
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I
FILTER FABRIC.
/i',lI+OI�jf�l
fee Jim FABRIC. WIO WRE FENCE._6' MAX WITH EXTRA STRENGTH
8' MAX, WITH STANDARD STRENG-IL
FABRIC WITH WIRE FENCE.
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NOTE 2
WE
WIRE IS REQUIRED FOR STANDARD
STRENGTH FENCING. SEE NOTE 6.
SELF -FASTENING STEEL POSTS
OR EQUIVALENT. DRIVE POSTS
24" INTO GROUND. SEE NOTE 3,
BRACE POSTS AT
.��LOW POINT
90' TYPICAL
110' MAX.
NOTES:
I
IN f111-
1. Toe in backfill into trench and compact -11 � DRIVE STEEL POSTS
the soil firmly to anchor the bottom of the I H MIN. 24" (EXTRA DEPTH
silt fence so that the runoff is forced to go i REQUIRED FOR UNSTABLE SOILS)
through the fence. No runoff is to flow under the fence.
2. To increase storage capacity and prolong the life of the silt fence, excavate a 6"x6" sediment trench uphill along the
line of posts whenever possible.
3. Posts for sediment fences are to be 1.33 Ib/LF steel with a minimum length of 5 ft. Make sure that steel posts have
projections to facilitate fastening the fabric. Filter fabric may be attached using wire or plastic zip ties that have a
minimum 50 lb tensile strength.
4. Total drainage area flowing to silt fence may not exceed 1/4 acre per 100 Ft. of fence.
5. Silt fences should not be used at pipe outlets or in areas of concentrated flow (creeks, ditchlines, swales etc.)
6. Construct the silt fence sediment barrier with either Standard Strength or Extra Strength synthetic filter fabrics. If
Standard Strength fabric (TerraTex SF 90 or equiv.) is used, wire mesh support IS required. If Extra Strength fabric
(Mirafi 10OX or TerraTex SFD or equiv ) is used, NO support is required.
7. Standard Strength fabric (Teri SF 90 or equiv.) with 8 ft max post spacing DOES require support by wire mesh
fastened securely to the upslope side of the posts. Use wire fence with a minimum 14 gauge and a maximum mesh
spacing of 6 inches. Extend the wire hlesh support to the bottom of the trench. Fasten wire reinforcement, then fabric
on the upslope side of the fence post using wire or plastic zip ties that have a minimum 50 Ib tensile strength.
8. Extra Strength Filter Fabric (Mil IOl or TerraTex SFD or equiv.) with 6 ft max post spacing DOES NOT require wire
mesh support. Securely fasten filter fabric directly to posts. Wire or plastic zip ties that have a minimum 50 lb tensile
strength.
MAINTENANCE:
1. Inspect at least weekly and after each significant (112 inch or greater) rainfall event and repair immediately.
2. Should the fabric of a sediment fence collapse, tear, decompose or became ineffective, replace it promptly.
3. Removed 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 duringeleanout.
4. Remove all fencing materials and unstable sediment deposits and bring the area to grade and stabilize it after the
contributing drainage area has been properly stabilized.
101.01 - TYPICAL SILT FENCE
NOT TO SCALE 11-15-19
BEFORE YOU DIG,
CALL
d
t�
BOUNDARY DESCRIPTION SHOWN
IS NOT FOR RECORDATION.
NORTH CARO_INA
ONE -CALL CENTER
www.ncocc.org
These plans are for bidding purposes only and
are not to be used as Construction drawings
unless initialed and dated as approved for
CONSTRUCTION SAFETY
Construction below by the Engineer.
These drawings do not contain the requirements for
Approved for Construction:
job safety. All provisions for safety shall be the sole
responsibility of the contractor.
Date:
EXISTING CONDITIONS:
RECORD DRAWINCQIS°
The contractor shall be responsible for reviewing
all
These drawings are bpIleved to be a correct
existing job conditions. Any adverse existing conditions
representation of actual field conditions but
affecting work shown on these drawings shall be
are not warranted as such.
brought to the attention of the engineer for possible
clarification or reconciliation.
By: Date:
II
WIRE FENCE IS REQUIRED ENT. SEE
SELFLFASTENING
OR
HARDWARE CLOTH EQUIVASTEEL LT5
ON WIRE FENCE NOTE 3EN
SILT FENCE FABRIC TO OVERLAP-- a
FLOW HARDWARE CLOTH BY 12" 1 N
(SEE ISOMETRIC VIEW) 1
T �LT STONE FILTER OF I INCH x Z
0 F DIA. NCDOT 57 WASHED O °D M
�VJJ P� PA STONE �y o `SIDE VIEW
lO1N Ia�gBRI i fill. Z� -
11
4
NOTE 1 -f
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DRIVE STEEL POSTS
MIN. 24" (EXTRA
DEPTH REQUIRED
FOR UNSTABLE
SOILS)
sf F
SILT0 E1AIL
T s41 F FE CR
o c>�oHpANgR�ReE
STONE FILTER OF ' _U UVn-U U U U� V U" 2 �\
1 INCH DIA. NCOOT #57 �U j
WASHED STONE 00(�,,OOP �OQO�OO I
SEE SIDE VIEW O0o000� OO6� OUd00� CEO
ISOMETRIC VIEW
E� o0o�vOouQ�o�
NOTES: po po 0 o V 1
I
1. Toe in backfill into trench and compact �VovQO, T
the soil firmly to anchor the bottom of the pO0000 �'
hardware cloth $overlapping silt fence so that
the runoff is forced to go through the fence. SEE NOTE 1
No runoff is to flow under the fence or the relief point.
2. Use silt fence outlets only when drainage area does not exceed 1/4 acre and there is a
low area. Use as a repair of silt fence failures.
3, Posts for sediment fences are to be 1.33 Ib/LF steel with a minimum length of 5 ft. Make
sure that steel posts have projections to facilitate fastening the fabric. Filter fabric may
be attached using wire or plastic zip ties that have a minimum 50 Ib tensile strength,
4. See do.:ml 101 01 for silt fence construction standards.
MAINTENANCE:
1. Inspect at least weekly and after each significant (1/2 inch or greater) rainfall for damage
and sediment accumulation to confirm device is working properly.
2. At a minimum, remove sediment when accumulation reaches half the height of sediment
control stone.
3. Replace or clean sediment control stone as needed to allow water to drain through the
device betweetrsainfall events.
4. Rebuild and/or repair the device when damaged.
5. Repair areas that become undermined due to concentrated flows.
6. Remove all fencing materials and unstable sediment deposits and bring the area to
grade and stabilize it after the contributing drainage area has been properly stabilized.
101.02 = SILT FENCE
OUTLET RELIEF POINT
NOT TO SCALE SFOp-' REV. 11-21-19
NOTES:
1. Grade the basin so that the bottom is level front to back and side to side.
2. Install posts or saw horses across the width of the sediment trap (Practice 6.62, Sediment Fence).
3. Steel posts should be driven to a depth of 24 inches, spaced a maximum of 4 feet apart, and installed up the side of the
basin as well. The top of the fabric should be 6 inches higher than the invert of the spillway. Tops of baffles should be 2
inches lower than the top of the berms.
4. Install at least three rows of baffles between the inlet and outlet discharge point. Basins less than 20 feet in length may use
2 baffles.
5. When using posts, add a support wire or rope across the top of the measure to prevent sagging.
6. Wrap porous material (wire mesh, 700 plm2 corrosion control blanket or tree protection fence doubled). Over a sawhorse or
the top wire. Hammer rebar into the sawhorse legs for anchoring. The fabric should have five to ten percent openings in
the weave. Attach fabric to a rope and a support structure with zip ties, wire, or staples.
7. The bottom and sides of the fabric should be anchored in a trench or pinned with 8-inch erosion control matting staples.
8. Do not splice the fabric, but use a continuous piece across the basin.
MAINTENANCE:
9. Inspect baffles at least once a week and after each rainfall. Make any required repairs immediately.
10. Be sure to maintain access to the baffles. Should the fabric of a baffle collapse, tear, decompose, or become ineffective,
replace it promptly.
11. Remove sediment deposits when it reaches half full to provide adequate storage volume for the next rain and to reduce
pressure on the baffles. Take care to avoid damaging the baffles during cleanout. Sediment depth should never exceed
half the designed depth.
12. After the contributing drainage area has been properly stabilized, remove all baffle materials and unstable sediment
deposits, rin a area to g grade, an stabilize it.
FOR BAFFLE, USE COIR MESH, 700
G/Mz COIR
EROSION CONTROL BLANKET OR TREE PROTECTION
FENCE FOLDED OVER (DOUBLED). STAPLE OR TRENCH 3
INTO BOTTOM OR SIDE. DO NOT SPLICE FABRIC - z �' SET TOP ELEVATION OF
USE A CONTINUOUS PIECE ACROSS THE BASIN. - BAFFLE FABRIC 6"
HIGHER THAN INVERT OF
wllj Ir Ij Ij Ir y SPILLWAY & 2" LOWER
INLET ZONE ` / , , �♦ O(� 1 I 11 r / \ e THAN TOP OF CREST
35% OF SURFACE AREA • r m IL /,
r �\
BAFFLE
FIRST CHAMBER is '
25% OF SURFACE AREA
BAFFLE ,
SECOND CHAMBER
25% OF SURFACE AREA
r �fl 4 MAX
SUPPORT POSTS 24
INTO BOTTOM OR
SIDES - TYPICAL
SUPPORT ROPE TO WIRE
TO PREVENT SAGGING
STAKE TO
APART v - --T WIRE
BAFFLE r
OUTLET ZONE'
i 5% 0F
SURFACE AREA
r
♦
4 , %T.. i 45' CREST WIDTH ♦ <Oq♦
EARTHEN
EMBANKMENT
(`
- -OUTLET,
CLASS I RIP RAP gr
LOW
102.11 BAFFLES \� o ® GEOTEXTRIME AASLISHOWN
NOT TO SCALE REV. 11-16-19 TO BE USED IN TEMPORARY
[M]SEDIMENT TRAP, ROCK DAM, SKIMMER
BASIN, OR SEDIMENT BASIN
COMPACTED SOIL
z
-I IJ I II-1 I ! I it
ITi
6' TYP.
NOTES:
1. Max drainage area = 5.0 acres. To be constructed in accordance w/ NCDEQ LQS Specifications, Std. 6.20.
2. Remove and properly dispose of all trees, brush, stumps, and other objectionable material.
3. Ensure that the minimum constructed cross section meets all design requirements.
4. Ensure that the top of the dike is not lower at any point than the design elevation plus the specified settlement
(10% minimum).
5. Provide sufficient room around diversions to permit machine regrading and cleanout.
6. Vegetate the ridge immediately after construction, unless it will remain in place less than 30 working days.
7. Where design velocities exceed 2 ft/sec, a channel liner is necessary to prevent erosion. See plans.
MAINTENANCE:
8. Inspect temporary diversions once a week and after every rainfall.
9. Immediately remove sediment from the flow area and repair the diversion ridge. Carefully check outlets and
make timely repairs as needed. When the area protected is permanently stabilized, remove the ridge and the
channel to blend with the natural ground level and appropriately stabilize.
103.07 - TEMPORARY
DIVERSION RIDGE OR CHANNEL
NOT TO SCALE _„•-,. TD REV. 11-19-19
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CONSULTING ENGINEERS, P.A.
CIVIL, MUNICIPAL &
STRUCTURAL ENGINEERS
BLN = C0562
154 Roundabout Ct.
P.O. Box 7966
Rocky Mount, N.C. 27804
Phone: [phone]
www.appionengi neers.corn
[e-mail]
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P.A. These drawings hove been prepered as instruments of service for a
for site or building improvement and remains the
ty of the Engineer for use under his supervision. No reproduction or other use is allowed without his p
t 2011 Appian Consul
BEFORE YOU DIG,
CALL
TYPICAL STAPLES
#8 GUAGE WIRE
ItiL
1 2"
1
/
..J14
_111c
FLOW
A. BURY THE TOP END OF
j THE MATTING STRIPS IN A
TRENCH 6 INCHES OR
!� MORE IN DEPTH,
9 i
w.
FLOW
Y
4.B. TAMP THE TRENCH FULL
OF
SOIL SECURE WITH ROW OF STAPLES, 10 INCH
`�G' �Tb � r,T' Z717r11i}j, �'' - _ - 1_11- - SPACING, 4 INCHES DOWN
�ILr i .�� 'b7b�Y>b L41a/ / `;;. I' f-= ! LilFROM THE TRENCH.
r t azi�4� Zr� 1tt4l7jr+1144 r y�%G-1:
s ,L-�4,��iT'4,t'rr-Xgf1 Srdia. �2t ,t 1
_z-- 5,4>ri..�c��C�Z�.g�"�v.`T'->�q'r+ran�zt_tbrr Iy�r���3�qd�giI����sICI
{ ♦ FLOW
tl7FIE flux --1-'
,�1 7�i .7�r fir rrx t Fg � ri �
PRESS ENDS 6 INCHES t1Y- r yl�i
INTO THE SOIL AROUND �'z` ?FlL1 T11_zi r j�---,'-
STRUCTURES AND STAPLE
SECURELY 'l(r�`�l _. OVERLAP - BURY UPPER END
WHEN USING IN CHANNELS, ROLL OUT STRIPS OF BLANKET/ ♦ '"` �i" OF LOWER STRIP AS IN "A"
NETTING PARALLEL TO THE DIRECTION OF FLOW AND OVER!. '' AND "B". OVERLAP END OF
THE PROTECTIVE MULCH. TOP STRIP 18 INCHES AND
DITCH LINER: ♦ STAPLE.
1. Ditch liner shall be Curlex I CL excelsior wood fiber erosion control blanket (NCDOT ♦` FLOW
Approval NP02-4029), or approved equal. The top side of the temporary,
biodegradable blanket (non -seeded) shall be covered with polypropylene netting.
The blanket shall have the following characteristics: fiber j
count= 4,800/sy; mass= 0.55 Iblsy; net openings= 1.0" x 2.0 permissible shear _ D. EROSION STOP - FOLD OF
stress= 1.60 Ibsfsf; maximum permissible velocity= 5.0 fUsec; functional ua MATTING BURIED IN SLIT
TRENCH AND TAMPED
longevity= 15 months±. . DOUBLE ROW OF
2. Blanket shall be placed uniformly over a mulched seedbed and stapled as shown or _,II_ _ - STAPLES.
as directed by manufacturer's representative require rr10 ts, whichever is more strict.
Staples shall be 6" long, 11 auge U-shaped.
x x.; x x x x x x x x x
h�'n 'a x x -v x x x x
X O x N N
3� I ig" x x x x x x x
% x xXX x. �a x % X x X x
x x x x x x x
x x
PATTERN "A" PATTERN "B" PATTERN "C" PATTERN "C"
NOTES: TYPICAL STAPLE PATTERN
3. Apply lime, fertilizer and seed before laying the net or mat.
4. Start laying the net from the top of the channel or elope and unroll it down the grade. Allow netting to lay loosely on the soil but without wrinkles - do not stretch.
Mat or blanket - type product should provide at leaat 30% coverage of the surface where it is applied.
5. To secure the net, bury the upslope end in a slot or trench no less than 6 inches deep, cover with soil, and tamp firmly as shown. Staple the net every 12 inches
across the top end and every 3 foot around the eddes and bottom. Where 2 strips of net are layed side by side, the adjacent edges should be overlapped 3
inches and stapled together. Each strip of netting should also be stapled down the center, every 3 foot. Do not stretch the net when applying staples.
6. To join two strips, cut a trench and anchor the end of the new net. Overlap the end of the previous roll 18 inches, as shown, and staple every 12 inches just
below the anchor slot. Refer to manufacturer's instructions.
MAINTENANCE:
7. Inspect all mulches periodically, after rainstorms to check for rill erosion, dislocation, of failure. When erosion is observed, apply additional mulch. If washout
occurs, repair the slope grade, reseed, and reinstall mulch. Continue inspections untilvegetation is firmly established.
103.09 - DETAIL FOR STABILIZING CHANNELS
WITH JUTE THATCHING, EXCELSIOR BLANKETS,
lop I[ILL v
100
r
,00~111`
M ,.
0'
c.
AND FIBERGLASS NETTING
NOT TO SCALE GL REV. tt-19-1s
DETAIL A DETAIL B
Rolled Erosion Control product (RECP) Notes
(Slope Application) STAPLE PATTERN OVERLAP AT ENDS OF ROLL
IZ NOT TO SCALE NOT TO SCALE
1, Site prep: Grade site according to plans, then remove soil clods, clumps, rocks or vehicle imprints of any significant size that would W
o
a
M
prevent the RECP from lying flush to the surface contours. All gullies, rills and any other disturbed areas must be fine graded prior to 1,625' 3' TYP. x X RECP X SIDE VIEW
Installation. Q TYP x x WATER
2. Lime, fertilize and seed BEFORE installation of RECP. Planting of shrubs, trees, etc. (if required) should occur after installation. W I RECP 2'-0" MIN. E,..R FLn,,,,
S
o
3. Anchor Trench: Anchor trenches are required to securely fasten the RECP to the ground surface. Cut trenches for initial anchor /q x ' x i x x x
trenches, termination trench and side anchor trenches (6 inches wide and 12 inches in depth) as shown in Detail D. Position initial V Z t 5' �, --- -_ ECP
v
and terminal anchor trenches 3' back from the crest/bank/toe of the slope. Install the RECP into the trench, fasten to the bottom Q x� x i x x x _ -
N
o
o
N
with staples/pins spaces 3 feet apart (maximum). Backfill the trenches and compact in a manner that does not damage the RECP. STAGGER - ` _ - !
W x x x x I x
c
Z
o
4, Terminal trenches are required at RECP ends and intermittent trenches must be constructed across channels at 25-foot intervals.
a- I STAGGER STAPLES
�
�.
Q
a
Check slots and stapling layout to be constructed per manufacturers specifications. x x f u I
" WATER
rr1
a
v
S. Once anchored at the top, roll the RECP down the slope. Install staples/pins down the center of each mat with spacing interval of 3 0 I 2'-0" MIN.
J
w
0
the slope and the soil type, See Detail{ p for the rule X X X �
feet minimum. More fasteners may be required depending on the application, p yp RECP � 3.25'
of thumb on the number of fasteners needed. u TYP.
6. If overlapping from end to end as necessary, ensure the rolls are shingled in the direction of the water flow, upslope over downslope
(see. drawing below for clarity). The ends should overlap a minimum of 2 feet and fastened with 2 rows of staples/pins as shown in ... . . . . . . . . . . ............... .
Detail B.
7.. Position second RECP with a minimum 3-inch overlap of the previous roll and secure it into the anchor trench. Roil the mat down x x x
the slope and fasten the overlap, staggering them between the outside fasteners, per Detail C. 1.625' 3' TYP. _ RECP
8. Do not stretch blankets/matting tight. Allow the rolls to form to any irregularities. (n TYP. x x -
tfi t'I Y ! e is covered as noted on tans Ensure that the RECP is anchored at the terminal end using W T7 >
r
o
a+
t
k'
STAGGER STAPLES
p
'1
{
nN,��;,
STAPLES,'
O.
-y^���i
� ' `1ff'�`t
APART
Q
Z
} w
RECP
Z
9. Continue a process un 1 en Ire sop p o x x x x x 0
Detail D. �;.5 �� a ¢ o
10. Care should be taken during installation to avoid damage occurring to the RECP as a result of the installation process. Should the Z x x x x x 1
RECP be damaged during installation, a patch shall be placed over the damaged area extending 3.25 feet beyond the perimeter of W I " STAGGER
STAGGER OVERLAP BETWEEN PLAN VIEW
11g germination and initial three months of vegetation., Apply supplemental water over the area as directed by site personnel during LL = x x x x x PANELS BY AT LEAST 2D'
the damage.
growth. Inspect at least weekly and after each significant (1/2 inch or greater) rainfall event. Erosion must not occur beneath RECP. J x x V Q I �--
if erosion occurs or if any areas of the RECP are damaged or not in close contact with the ground, the problem shall be fixed x x x
Immediately. Monitor and repair RECP as necessary until ground cover is established. RECP 3.25'
v TYP.
ANCHOR TRENCH NOTE:
--PER DETAIL D
MIN W W W ENSURE ALL FASTENERS ARE INSTALLED TO
AK E DIRECT CONTACT WITH RECP AND
SOIL
3" MIN. OVERLAP
BETWEEN ROLLS
PER DETAIL C
OVERLAP ENDS
OF ROLLS
PER DETAIL B
ANCHOR TRENCH
PER DETAIL D
STAPLE PATTERN
PER DETAIL A
ANCHOR TRENCH
PER DETAIL D
s �
Tri Mirr1T
DETAIL D t] F9 1 7 0
ANCHOR TRENCHES
NOT TO SCALE _STAPLE ~
DETAIL C
OVERLAP BETWEEN PANELS
NOT TO SCALE
SIDE VIEW COMPACTED
MATERIAL
--3" MIN.
- - - RECP -RECP - - - -
103.09A - RECP SLOPE STABILIZATION J{�
NOT TO SCALE (SEE NCDENR 6.17) REV. 3 3 14
PURPOSE:
To
reduce erosion in a drainage channel by reducing the velocity of flow.
DESIGN CRITERIA:
1.
Drainage area is limited to one half acre.
STONE SHALL BE PLACED OVER THE
2.
Keep a maximum height of 2 feet at the center of the check dam.
CHANNEL BANKS TO KEEP WATER FROM
3.
Keep the center of the check dam at least 9 inches lower than the outer edges at
CUTTING AROUND THE DAM.
natural ground elevation.
1.5' 1 5'
4.
Keep the side slopes of the check dam at 2:1 or flatter.
5.
Ensure that the maximum spacing between check dams places the toe of the upstream
TOP OF BANK
check dam at the same elevation as the top of the downstream check dam.
I
6.
Stabilize outflow areas along channel to resist erosion.
7.
Use NCDOT Class B stone and line upstream side of the check dam with NCDOT #5
II_
KEY STONE
or #57 washed stone
INTO BANKS
8.
Key the stone into the ditch banks and extend it beyond the abutments a minimum of
PLAN VIEW
1.5 feet to avoid washouts from overflow around the dam.
FILTER CLOTH
s
CONSTRUCTION SPECIFICATIONS:
A
MIN.
9.
Place stone to the lines and dimensions shown in the plans on a filter fabric foundation.
- - - - - - - - - - _ _ - - - _
_
_ - - - - sT01� OF BANK
10.
Keep the center stone section at least 9 inches below the natural ground level where the
FLOW
-
dam abuts the channel banks.
i
11.
Extend stone at least 1.5 feet beyond the ditch banks to keep water from Gutting around
t ti?'2
FLU`WILINE
FLOW
2' MAXIMUM AT ,
the ends of the check dam.
CENTER LINE
12.
Set spacing between check dams to assure that the elevation at the top of the lower dam
is the same as the toe elevation of the upper check dam.
- I
III. -I ^
CLASS "B" RIP RAP
_
1='FLOWLINE -- =
- II I- -
13.
Protect the channel after the lowest check dam from heavy flow that could cause erosion.
4' TO 6'
FILTER CLOTH
14.
Make sure that the channel reach above the most upstream check dam is stable.
15.
Ensure that other areas of the channel, such as culvert entrances below the check dams,
12" OF NCDOT #5 OR #57
are not subject to damage or blockage from displaced stones.
WASHED STONE SECTION
MAINTENANCE:
16.
Inspect check dams and channels at least weekly and after each significant (1/2
POINT
inch or greater) rainfall event and repair immediately. Clean out sediment, straw,
�y
,Ilifitl
TOP OF DOWNSTREAM DAM
limbs, or other debris that could clog the channel when needed.
from
ltr��rl =_ = -m
FLO
17.
Anticipate submergence and deposition above the check dam and erosion
hm�NE OF CHANNEL
-=III=I ILI11 11
I��
high flows around the edges of the check dam. Correct all damage immediately. If
occurs between check dams, additional measures can be taken
POINT "A' IT -
significant erosion
- Tit-7II Ill - i1- �,
TOE OF UPSTREAM DAM 11=III=iTf:�r1=--
such as, installing a protective riprapliner in that portion of the channel.
g p
18.
Remove sediment accumulated behind the check dams as needed to prevent
SPACING SCHEMATIC "S" . MAXIMUM DISTANCE BETWEEN DAMS
damage to channel vegetation, allow the channel to drain through the stone check
THAT PLACES POINT "A" (TOE OF
Add
IRtj BOUNDARY DESCRIPTION SHOWN
I IS NOT FOR RECORDATION.
NORTH CAROLINA
ONE -CALL CENTER These plans are for bidding purposes only and
www.ncocc.org
are not to be used as Construction drawings
unless initialed and dated as approved for
CONSTRUCTION SAFETY Construction below by the Engineer.
These drawings do not contain the requirements for Approved for Construction:
job safety. All provisions for safety shall be the sole
responsibility of the contractor. Date:
EXISTING CONDITIONS: RECORD DRAWINGS:
The contractor shall be responsible for reviewing all These drawings are believed to be a correct
existing job conditions. Any adverse existing conditions representation of -,tUal field conditions but
affecting work shown on these drawings shall be are not warranted as such.
brought to the attention of the engineer for possible
clarification or reconciliation. By: Date:
104.01 (
NOT TO SCAI_t.
UPSTREAM DAM) = SAME ELEVATION AS
dam and prevent large flows from carrying sediment over the check dam.
POINT "B" (TOP
OF DOWNSTREAM DAM)
stones to check dams as needed to maintain design height and cross section.
NOTES:
HECK
DAM
DETAIL
19. Do not use check dams in intermittent or perennial streams;
20. Contractor to verify /comply with NCDENR Erosion and Sediment
REV. 11-19-19
Control Planning and Design Manual (Latest revision), detail 6 3
PLAN
►VIVIEW
�-
PLAN VIEW
3" MIN. -_-1 I-
RECP
CONSULTING ENGINEERS, P.A.
CIVIL, MUNICIPAL &
✓,j //�%
-` STRUCTURAL ENGINEERS
BLN = C0562
154 Roundabout Ct.
�, �„•
P.O. Box 7966
Rocky Mount, N.C. 27804
Phone: [phone]
11
NOTE:
6" MIN.
STAPLES AT 3' www.appionengineers.com
INTERVALS WITHIN adm)n0oppionengineers"com
TRENCH AND AT TOP
GENERAL RULE OF THUMB FOR
ESTIMATING THE AMOUNT OF
STAPLES REQUIRED
SLOPE # OF_STAPLES
1 1 TO 2 1 3-4 PER S'Q. YARE,
3:1 OR LESS 23 PER SO YARC7
PROVIDE HIGH STRENGTH DOUBLE
STITCHED J TYPE SEAMS
SEWN IN SPOUT
HIGH STRENGTH STRAPPING FOR
HOLDING HOSE IN PLACE
WATER FLOW FROM PUMP
OPENING TO ACCOMODATE UP
TO 4" DISCHARGE HOSE
ELEVATION ViEW
- �AGGREGATE UNDERLAYMENT
(8" THICK NCDOT #57 STONE)
MIRIFI 140N NON -WOVEN GEOTEXTILE
NOTES:
1. Place the dewatering bag so that the incoming runoff or pumped effluent flows into and through it
without Causing erosion to adjacent slopes. Installation and materials shall be per NCDOT Standard
Specifications, Section 1639.
2. Install 8" #57 stone over Mirafi 140N (or approved equal) non -woven geotextile.
3. The dewatering bag shall be made of a 10 oz non -woven geotextile with a min. surface are of 225 sf
per side. Flow rate to be minimum 80 GPM/sf per ASTM D-4491.
4. All structural seams shall be sewn with a double stitch using a double needle machine with high
strength thread. The seam strength shall withstand 100 Win per ASTM D-4884.
5. Discharge from the dewatering bag shall be directed such that pre -disturbance hydrology is not
changed.
6. Immediately after construction, stabilize all disturbed areas with vegetation.
MAINTENANCE:
7. Inspect dewatering bag daily and after significant (1/2 inch or greater) rainfall events to see if any
erosion around or below the bag has taken place, or if bag is leaking or has been dislodged.
8. Immediately make all needed repairs to prevent further damage.
9. Replace and dispose of the bag when it is % full of sediment or when it is impractical for the bag to
filter the sediment out at a reasonable rate. Prior approval from Engineer shall be received before
removal and replacement.
104.07 - DEWATERING BAG
NOT TO SCALE REV., 11-19-19
,,`�\ CA, O r`r
!"
•`�FESSlO,y4l.2,p �.. 7 ' 447.sh
19-089
D-0000
CE-8

ight 20T1 Appian Consulting Engineers, R.A. These drawings have been prepored cis instruments of service for a porticuior site or building improvement and remains the property of She Engineer
for use under his
No. reproduction or other use is allowed without his permission.
SKIMMER SEDIMENT BASIN NOTES
Revised NPDES requirements and NC General Construction Permit NCGO1 state that outlet structures must withdraw from the sediment basin surface unless
drainage area is less than 1.0 acre. These notes are intended to comply with NCDEQ LQS Erosion Control Manual practice 6,64, Skimmer Sediment Basin.
1-2"
} INSTALLATION
t. Strip area under embankment of all vegetation and root mat. Place temporary sediment control measures (silt fence) below basin as needed.
WOODEN
STTALEAK£ 2. Ensure that fill material for the embankment is free of roots, woody vegetation, oversize stones, organic material, or other objectionable material. Place fill in lifts
WOof 9" or less and compact by traversing. Overfill embankment 6" to allow for settlement.
3. Shape the basin as shown on the plans. Ensure stable transition from diversion to toe of basin slope, using fiberglass netting or rip rap, if required.
-4" DIA. BEND 4. Place barrel (4" Sch 40 PVC pipe, unless otherwise noted) on a firm, smooth foundation of impervious soil. Do not use pervious material such as sand, gravel or
crushed stone as backfiil around pipe. Place the fill material around the pipe spillway in 4" layers and compact it under and around the pipe to at least the same
# 12 STEEL density as the adjacent embankment.
REINFORCEMENT BAR 5. Place a minimum of 2' of compacted backfiil over the pipe spillway before crossing it with construction equipment. In no case should the pipe conduit be installed
by cutting through the dam after the embankment is complete. Provide seeding and matting on interior and exterior sideslopes.
6. EMERGENCY SPILLWAY: Install low permeability, woven polypropylene geotextile for spillway liner per NCDOT Specs Sec. 1056 (Type 4 geotextile). Unroll
the geotextile on the spillway m the direction of flow, with edges buried at least 6 inches. Geotextile to be one continuous
g P Y 9 piece of material or overlapped a
minimum of 18 inches.
1 " NOMINAL STAPLE 7. install coir baffles as shown per Detail 102.11, or field adjust as necessary with approval from Engineer.
8. Prevent the skimming device from settling into the mud by providing a foot pad of Class B rip rap (min. 4' x 4' x 1') under the skimmer, or approved equivalent
method.
9. Assemble the skimmer following the manufacturer's instructions or as designed.
COIR FIBER MAT 10. Lay the assembled skimmer on the bottom of the basin with the flexible joint at the inlet of the barrel pipe. Attach the flexible joint to the barrel pipe and position
the skimmer over the rock foot pad.
ANCHOR OPTIONS 11. Attach a rope to the skimmer and anchor by rope to a wood stake or metal post for maintenance.
NOT TO SCALE
MAINTENANCE OF SKIMMER BASIN
12. Inspect skimmer basin at least weekly and after each significant ('/2" or greater) rainfall event and repair immediately. Remove sediment and restore the basin to
its original dimensions when sediment accumulates to '/ the height of the first baffle. Pull the skimmer to one side so that the sediment underneath it can be
Low -PERMEABILITY excavated. Excavate sediment from the entire basin, not just around the skimmer or the first cell. Make sure vegetation growing in the bottom of basin does not
GEOTEXTILE PER NOTES hold down the skimmer. Ensure rock foot pad is clear of silt.
2 2 13. Repair baffles if damaged. Re -anchor baffles if water is flowing underneath or around them.
MIN. MIN.
2 14. If skimmer is clogged with trash and there is water in the basin, usually jerking on the rope will make the skimmer bob up and down and dislodge debris and
z �.1 1 r / restore flow. If this does not work, pull the skimmer over to the side of the basin and remove the debris. Also check the orifice inside the skimmer to see if it is
clogged; if so, remove the debris.
A5 SHOWN / 15. If skimmer arm or barrel pipe is clogged, the orifice can be removed and the obstruction cleared with a plumber's snake of by flushing with water. Be sure and
/\ ON PLANS \✓/�/j\ replace the orifice before repositioning the skimmer.
16. Check the embankment, rock spillway and outlet for erosion damage, and inspect the embankment for piping and settlement. Make all necessary repairs
immediately. Remove all trash and other debris from the skimmer and pool areas.
SECTION C-C 17, Maintenance of the sediment basin/ rock dam is only to be performed by authorized personnel.
18. Contractor is to maintain record of inspections, maintenance and dewatering records on Self -Inspection Forms and NCG permit forms in the permit box kept
EMERGENCY SPILLWAY onsite.
SEDIMENT BASIN REMOVAL PROCEDURE
19. Refer to Construction Sequence.
a D�
J W
n - n
O o a a 'S
i
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ROPE ATTACHED
�:--- TO WOOD OR
METAL POST FOR
d: EMBANKMENT MAINTENANCE
OUTLET PIPE WITH
ANTI -SEEP COLLAR
EMERGENCY SPILLWAY L ,„ PLAN VIEW
IN UND€STQR13ED --=-{
GROUND
F�COIR FIBER MATT
LM
�•=�TOP OF
Q EMBANKMENT
5' MIN.
10' 1 D'
FLOW I MIN. MIN. SKIMMER
PROPOSED
EMBANKMENT
1' MIN.
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OUTLET PIPE
® '!�ANTI-SEEP COLLAR
SECTION A -A
-- --- STONE PAD
5' SEE NOTE 8
I MIN i
LOW-PERMEAMLITY
GEOTEXTILE PER. NOTES
1h �.
2
UNCLASSIFIED
EARTH MATERIAL v?
EX GRACE \�% / / ! %/'/�fl\'/
llI11,�1
SEC r ICON B-B RIP RAP AS DIRECTED
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THRU EMERGENCY SPILLWAY SEQUQENCE UCTION -E
NOT TO SCALE
104.09 - SKIMMER SEDIMENT BASIN
NOT TO SCALE REV. 11-19-19
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SKIMMER DETAIL NOT TO SGALE
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BEFORE YOU DIG, I
CALL.
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® BOUNDARY DESCRIPTION SHOWN
i
IS NOT FOR RECORDATION.
NORTH CAROLINA
ONE -CALL CENTER These plans are for bidding purposes only and
www.ncocc,orq are not to be used as Construction drawings
unless initialed and !fated as approved for
CONSTRUCTION SAFETY Construction below by the Engineer.
These drawings do not contain the requirements for Approved for Construction:
job safety. All provisions for safety shall be the sole Date:
responsibility of the contractor.
EXISTING CONDITIONS RECORD DRAWING:
The contractor shall be responsible for reviewing all These drawings are believed to be a correct
existing job conditions. Any adverse existing conditions representation of actdal field conditions but
are not warranted as such.
affecting work shown on these drawings shall be
brought to the attention of the engineer for possible
clarification or reconciliation. By: Date:
D SCH 40 PvC
VENT PIPE
SCH 40
PVC PIPE
"C ENCLOSURE"
' PIVOT POINT OF
"C ENCLOSURE"
ORIFICE PLATE
SCH 40 PVC TEE
SCH 40 PVC PIPE
"ANGLE e" (MAX. 45' AT
MAX, POOL ELEVATION)
CLASS B RIPRAP
PAD (4'x4'xt' MIN.)
BOTTOM OF BASIN
9
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2-3" COARSE AGGREGATE
SECTION A -A
86.0' MIN.
6" HUMP TO DIVERT
RUNOFF FROM PAVED LEVEL
ROAD. SPREADER
4.0' 10.0'
2% SLOPE To
o
2-3" WASHED STONE
GRAVEL ENTRANCE/EXIT: WIDTH-15.0' FLARED TO 25.0' AT ROAD
LENGTH-50.0'
GRADE-2.0%
7,L4
CONSTRUCTION SPECIFICATIONS:
1. Clear the entrance/exit area of all vegetation, roots, and other
objectionable material.
2. Grade the road foundation so that the entrance / exit will have
a cross slope to the south and all runoff will drain to the block
and gravel drop inlet protection structure.
3. Place stone to the dimensions, grade and elevation shown.
4. Use washed stone 2" to 3" in size.
NOTE:
5. Maintain the gravel pad in a condition to prevent mud or
sediment from leaving the site. Should mud be tracked or
washed onto road, it must be removed immediately.
LM
GRAVEL CONSTRUCTIO
ROAD ENTRANCE/EXIT
NOT TO SCALE REV, 1-30-13
D
NOTE:
BULLDOZER TREADS CREATE GROOVES
PERPENDICULAR TO THE SLOPE, THE
SLOPE FACE SHOULD NOT BE BACK -
BLADED DURING THE FINAL GRADING
OPERATION.
NOTES:
1. CUT SLOPE ROUGHENING FOR AREAS NOT TO BE MOWED
a. 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.
b. Make the vertical cut distance less than the horizontal distance, and slightly slope the horizontal position of
the "step" in toward the vertical wall.
c. Do not make individual vertical cuts more than 2 feet in soft materials or more than 3 feet in rocky materials.
d. Grooving uses machinery to create a series of ridges and depressions that run across the slope (on the contour).
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
5 inch than 1 es apart.
2. FILL SLOPE ROUGHENING FOR AREAS NOT TO BE MOWED
a. 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. Use
grooving, as described above, to roughen the face of the slopes, if necessary. Do not blade or scrape the final
slope face.
3. CUTS, FILLS AND GRADED AREAS THAT WILL BE MOWED
a. Make mowed slopes no steeper than 3:1.
b. Roughen these areas to shallow grooves by normal tilling, disking, harrowing, or use of cultipacker-seeder. Make
the final pass of any such tillage implement on the contour.
c. Make grooves, formed by such implements, close together (less than 10 inches) and not less than 1 inch deep.
d. Excessive roughness is undesirable where mowing is planned.
4. ROUGHENING WITH TRACKED MACHINERY
a. Limit roughening with tracked machinery to sandy soils to avoid undue compaction of the soil surface. Tracking is
generally not as effective as the other roughening methods described.
b. Operate tracked machinery up and down the slope to leave horizontal depressions in the soil. Do not back -blade
during the final grading operation.
5. SEEDING
Immediately seed and mulch roughened areas to obtain optimum seed germination and growth.
MAINTENANCE:
Periodically check the seeded slopes for rills and washes. Fill these areas slightly above the original grade, then
reseed and mulch as soon as possible.
107.01 - SURFACE
ROUGHENING BY TRACKING
NOT TO SCALE 1:1 REV. 11-19-19
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❑ OWE WE
CONSULTING ENGINEERS, P.A.
CIVIL, MUNICIPAL &
STRUCTURAL ENGINEERS
BLN = C0562
154 Roundabout Cf.
P.O. Box 7966
Rocky Mount, N.C. 27804
Phone: [phone]
www.appionengineers.com
adminDappianengineers.com
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