20181258 Ver 1_Construction Drawings_20180917

EROSION AND SEDIMENT CONTROL PLAN
DUKE ENERGY
WOOD AWN TIE SUBSTATION - STR AMBANK STABILIZATION
SITE DATA
TAX PARCEL:
16902109
SITE ADDRESS:
CHASTAIN AVE
SIDEWALKS:
CHARLOTTE, NORTH CAROLINA
PROPERTY OWNER:
DUKE POWER CO
JURISDICTION:
MECKLENBURG COUNTY
PARCEL ACREAGE:
15.9 AC (693,823.7 FT 2)
STREAM STABILIZATION DISTURBED AREA:
0.25 AC (10,705 FT 2)
TOTAL DISTURBED AREA:
3.96 AC (172,380 FT 2)
EXISTING ZONING:
UNZONED
PROPOSED USE:
MAINTENANCE
EXISTING IMPERVIOUS SURFACE AREA FOR STREAM STABILIZATION
BUILDINGS:
0 FT
PARKING & STREETS:
0 FT
SIDEWALKS:
0 FT
OTHER:
0 FT
TOTAL:
0 FT
PROPOSED IMPERVIOUS SURFACE AREA FOR STREAM STABILIZATION
BUILDINGS:
0 FT
PARKING & STREETS (GRAVEL)
0 FT'
SIDEWALKS:
0 FT
TOTAL:
0 FT
PROPOSED PERVIOUS SURFACE AREA FOR STREAM STABILIZATION
GRASSED AREA:
10,705 FT
GRAVEL DRIVE (ABC STONE):
0 FT
GRAVEL PAD (ABC STONE):
0 FT
TOTAL:
10,705 FT
PROPERTY OWNER:
DUKE POWER CO
ADDRESS:
526 S CHURCH STREET
9
CHARLOTTE, NC 28202
PHONE NO.:
[phone]
CONTACT NAME:
MR. MAYUR PATEL
CONTACT E-MAIL ADDRESS:
[e-mail]
PROJECT REPRESENTATIVE:
ADDRESS:
PHONE NO.:
CONTACT NAME:
CONTACT E-MAIL ADDRESS:
RECORDED DOCUMENTS:
Know what's below.
Call before you dig.
S&ME, INC.
9751 SOUTHERN PINE BOULEVARD
CHARLOTTE, NC 28273
704.523.4726
CHRISTOPHER J.L. STAHL, P.E.
[e-mail]
DEED BOOK: 03123 / PAGE 071
.po.
CHARLOTTE, MECKLENBURG COUNTY , NORTH CAROLINA
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MICROSOFT BING MAPS.
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REFERENCE:
AERIAL PHOTOGRAPH OBTAINED FROM NC ONE MAP.
PREPARED BY
9751 SOUTHERN PINE BLVD
CHARLOTTE, NC 28273
[phone]
EROSION AND SEDIMENT CONTROL PLAN
Sheet Number
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COVER SHEET
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EXISTING CONDITIONS
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GENERAL NOTES (SHEET 2 OF 2)
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NORTH AND SOUTH PLAN VIEW -
EROSION CONTROL
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WALL SECTIONS
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CHARLOTTE, NC 28202
[phone]
8/10/18
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REFERENCE:
AERIAL PHOTOGRAPH OBTAINED FROM NC ONE MAP.
PREPARED BY
9751 SOUTHERN PINE BLVD
CHARLOTTE, NC 28273
[phone]
EROSION AND SEDIMENT CONTROL PLAN
Sheet Number
Sheet Title
0
COVER SHEET
1
EXISTING CONDITIONS
2
GENERAL NOTES (SHEET 1 OF 2)
3
GENERAL NOTES (SHEET 2 OF 2)
4
NORTH AND SOUTH PLAN VIEW -
EROSION CONTROL
5
NORTH AREA PLAN AND PROFILE
6
SOUTH AREA PLAN AND PROFILE
7
WALL SPECIFICATIONS
8
WALL SECTIONS
9
WALL DETAILS
10
E&SC DETAILS (SHEET 1 OF 2)
11
E&SC DETAILS (SHEET 2 OF 2)

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ENTRANCE (BY OTHERS) R�W EXISTING GROUND CONTOUR (1 FT.)
EXISTING GROUND CONTOUR (5 FT)
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NORMAL VOLTAGE,
kV
(PHASE TO PHASE)
MINIMUM REQUIRED
CLEARANCE
(FEET)
0TO50
10
OVER 50 TO 200
15
OVER 250 TO 350
20
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(MAD) NOTES:
1. ED CLEARANCE IS 10 FEET PLUS 4 INCHES FOR EVERY
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10 kV OVER 50 kV.
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PHASE -TO -GROUND DISTANCES ASSUME USING LIVE -LINE TOOLS IN
THE AIR GAP.
REFERENCE:
1. TOPOGRAPHIC SURVEY INFORMATION WAS PERFORMED BY MASER CONSULTING P.A. DATED 8-1-2018.
2. AERIAL PHOTOGRAPH WAS OBTAINED FROM NC ONE MAP.
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3. ALL VALUES ARE BASED ON THE DUKE ENERGY 2017 HEALTH AND
SAFETY HANDBOOK AND THE NATIONAL ELECTRIC SAFETY CODE (NESC)
2017,
0 60 120 180
GRAPHIC SCALE (IN FEET)
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PROJECT NUMBER
7235-18-014
DRAWING NUMBER
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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 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
Zones
If slopes are 10' or
• Slopes steeper
7 days
less in length and are
than 3:1
not steeper than 2:1,
14 days are allowed.
7 -days for slopes
• Slopes 3:1 or
14 days
greater than 50 feet
flatter
None
• All other areas
(except for
with slopes flatter
14 days
perimeters and
than 4:1
HQW 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.B 2 b
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.
The major change in the Pen -nit 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,
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.
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.
PROJECT NARRATIVE
PROJECT DESCRIPTION
THIS EROSION AND SEDIMENT CONTROL PLAN IS BEING SUBMITTED FOR NPDES EXPRESS PERMIT REVIEW ON BEHALF OF DUKE POWER (DUKE OR OWNER) IN ACCORDANCE WITH THE TERMS AND CONDITIONS OF OUR MASTER CONTRACT NUMBER 796544,
DATED MAY 1, 2015 BETWEEN DUKE ENERGY PROGRESS, INC., DUKE ENERGY FLORIDA, INC. AND S&ME. THE CLIENT (DUKE), IS PROPOSING A REDI-ROCK WALL TO STABILIZE THE SOUTHEAST BANK OF AN UNNAMED TRIBUTARY TO KINGS BRANCH AT ITS CLOSEST
PROXIMITY TO THE SITE AND ALONG AN EXISTING TOWER NORTH OF THE SUBSTATION.
THE PROPOSED SITE IS WITHIN AN EXISTING PARCEL OWNED BY DUKE POWER CO THAT IS COMPRISED OF MIX VEGETATED AND IMPERVIOUS AREAS. THE TOTAL AREA OF DISTURBANCE EXPECTED FOR THE PROJECT IS APPROXIMATELY 0.25 ACRES. THIS PROJECT
IS AN EXTENSION OF A SECURITY UPGRADE TO THE FACILITY ENCOMPASSING 3.7 ACRES OF LAND DISTURBANCE. PRELIMINARY GRADING INFORMATION BASED ON SITE ELEVATIONS INDICATE THAT CUTS AND FILLS OF UP TO 8 FEET ARE PLANNED FOR SITE
DEVELOPMENT. THIS EROSION AND SEDIMENT CONTROL PLAN, CONSISTS OF A SAND BAG COFFERDAM AND STREAM BYPASS. PERIMETER EROSION AND SEDIMENT CONTROLS WILL BE INSTALLED BEFORE CONSTRUCTION BEGINS. NO IMPERVIOUS SURFACES
ARE PROPOSED FOR THIS ACTIVITY. THIS EXTENSION PROJECT WILL UTILIZE CONSTRUCTION ENTRANCES FROM THE SECURITY UPGRADE.
CONSTRUCTION OF THE PROJECT WILL INCLUDE CLEARING AND GRUBBING WITHIN THE DEFINED LIMIT OF DISTURBANCE, CUT AND FILL NECESSARY TO STABILIZE THE STREAM BANK, AS WELL AS INSTALLATION OF A REDI-ROCK WALL AND THE EROSION AND
SEDIMENTATION CONTROL MEASURES DESCRIBED BELOW. THE PROPOSED EROSION AND SEDIMENTATION CONTROL DEVICES ARE PROVIDED IN APPENDIX II. THE EROSION AND SEDIMENT CONTROL PLAN PRESENTED HEREIN IS FOR THE STABILIZATION OF THE
UNNAMED TRIBUTARY CLOSE TO THE SITE. THE PROPOSED CONSTRUCTION IS NOT ANTICIPATED TO HAVE SIGNIFICANT ADVERSE IMPACTS DOWN -GRADIENT OR ON ADJACENT PROPERTIES.
EXISTING SITE CONDITIONS
THE PROPOSED SITE IS WITHIN AN EXISTING PARCEL OWNED BY DUKE POWER CO THAT IS COMPRISED OF MIX VEGETATED AND IMPERVIOUS AREAS.
SCHEDULE
THE PROJECT IS ANTICIPATED TO BEGIN APPROXIMATELY SUMMER 2018 AND BE COMPLETED APPROXIMATELY WINTER 2018.
EROSION AND SEDIMENT CONTROL NARRATIVE
THE EROSION AND SEDIMENT CONTROL MEASURES FOR THIS PROJECT INCLUDE THE PLACEMENT OF A VARIETY OF EROSION AND SEDIMENT CONTROL DEVICES, AT STRATEGIC LOCATIONS THROUGHOUT THE PROJECT LENGTH, AS DETERMINED FROM FIELD
OBSERVATIONS. THESE DEVICES INCLUDE:
1. SILT FENCE
2. SILT FENCE OUTLET
3. COMPOST FILTER SOCK
4. SLOPE MATTING
5. SAND BAG COFFERDAM
6. BYPASS PIPING
ADDITIONAL EROSION CONTROL DEVICES MAY BE REQUIRED DURING CONSTRUCTION IN ORDER TO CONTROL EROSION AND/OR OFFSITE SEDIMENTATION.
CONSTRUCTION SEQUENCE
THE FOLLOWING CONSTRUCTION SEQUENCE SHALL BE FOLLOWED THROUGHOUT THE CONSTRUCTION PROCESS:
1. OBTAIN PLAN APPROVAL AND PERMITS. NOTIFY AFFECTED LANDOWNERS.
2. CONTACT THE APPROPRIATE NCDEQ, MOORESVILLE REGIONAL OFFICE, LAND QUALITY SECTION INSPECTOR REGARDING THE SCHEDULING OF A PRE -CONSTRUCTION MEETING (704-663-1699). HOLD PRE -CONSTRUCTION MEETING.
3. INSTALL JOB BOX AND RAIN GAUGE NEAR BEGINNING OR END OF PROJECT. JOB BOX SHALL DISPLAY OR CONTAIN THE APPROVAL CERTIFICATE/LETTER, NPDES PERMIT AND PREVIOUS 30 DAYS OF SELF -INSPECTION RECORDS OR THE OWNER SHALL PROVIDE
OTHER MEANS OF ACCESS TO THESE RECORDS.
4. REFRESH EXISTING CONSTRUCTION ENTRANCES IF NECESSARY.
S. INSTALL PERIMETER EROSION CONTROL DEVICES AS NEEDED OR AS INDICATED ON THE PLANS PRIOR TO CONSTRUCTION. INSTALL TEMPORARY SILT FENCE WHERE APPLICABLE AND AS INDICATED ON THE PLANS.
6. INSTALL COFFERDAM WITH BYPASS PIPING AS SHOWN ON PLANS.
7. BEGIN CONSTRUCTION. GRADE, CUT AND FILL AREAS AS SHOWN ON THE PLANS.
8. INSTALL THE REDI-ROCK AS SHOWN IN APPENDIX II. DISTURBED AREAS SHALL BE SEEDED AND MULCHED ACCORDING TO THE SEEDING SPECIFICATIONS WITHIN SEVEN DAYS. EXCESS SOIL SHOULD BE RELOCATED.
9. STABILIZE REMAINING DENUDED AREAS WITH SEED AND MULCH UPON FINAL INSTALLATION ACCORDING TO SEEDING SPECIFICATIONS ON THE DRAWINGS. FINALIZE CONSTRUCTION.
10. UPON ACHIEVING FINAL STABILIZATION, CONTACT THE APPROPRIATE NCDEQ, MOORESVILLE REGIONAL OFFICE, LAND QUALITY SECTION INSPECTOR. REMOVE TEMPORARY EROSION CONTROL MEASURES, AS APPLICABLE. TEMPORARY MATTING, IF USED,
SHALL BE LEFT IN PLACE.
MAINTENANCE PLAN
THE FOLLOWING MAINTENANCE PLAN SHALL BE FOLLOWED UNTIL THE SITE IS STABILIZED AFTER CONSTRUCTION. DURING CONSTRUCTION, THE OWNER'S CONTRACTOR SHALL BE RESPONSIBLE FOR INSPECTION AND MAINTENANCE OF SEDIMENT AND
EROSION CONTROL MEASURES:
1. ALL EROSION CONTROL DEVICES SHALL BE PROPERLY MAINTAINED DURING CONSTRUCTION UNTIL THE COMPLETION OF CONSTRUCTION ACTIVITIES AND DISTURBED AREAS HAVE BEEN STABILIZED. TEMPORARY EROSION CONTROL DEVICES SHALL BE
REMOVED ONCE CONSTRUCTION IS COMPLETE AND THE SITE IS STABILIZED.
2. SEDIMENT AND EROSION CONTROL DEVICES AND PLANTED AREAS SHALL BE INSPECTED BY OWNER OR OWNER'S REPRESENTATIVE EVERY SEVEN (7) CALENDAR DAYS AND AFTER EACH RAINFALL OCCURRENCE THAT EXCEEDS ONE-HALF (0.5) INCH WITHIN A
24-HOUR PERIOD. DAMAGED OR INEFFECTIVE DEVICES SHALL BE REPAIRED OR REPLACED, AS NECESSARY, AS SOON AS PRACTICAL.
3. SEEDED AREAS SHALL BE FERTILIZED, RESEEDED AS NECESSARY, AND MULCHED ACCORDING TO THE SEEDING PLAN TO MAINTAIN A VIGOROUS, DENSE VEGETATIVE COVER. SEEDED AREAS SHALL BE INSPECTED PERIODICALLY BY OWNER UNTIL FINAL
GROUND COVER HAS BEEN ESTABLISHED. THE CONTRACTOR IS RESPONSIBLE FOR RESTORING VEGETATION TO ITS ORIGINAL CONDITION, OR BETTER, FOR UP TO A YEAR.
4. THE OWNER OR OWNER'S REPRESENTATIVE SHOULD ADHERE TO THE SELF-MONITORING AND SELF -INSPECTION PROGRAM FOR EROSION & SEDIMENT CONTROL (EFFECTIVE OCTOBER 1, 2010; REVISED 8/01/2013). DETAILS OF THE PROGRAM AND
RECOMMENDED MONITORING/INSPECTION FORMS CAN BE FOUND AT THE FOLLOWING WEBSITE: HTTPS://DEQ.NC.GOV/ABOUT/DIVISIONS/ENERGY-MINERAL- LAN D-RESOURCES/EROSION-SEDI MENT-CO NTROL/FORMS
GENERAL NOTES
1. THE OWNER'S CONTRACTOR IS RESPONSIBLE FOR IMPLEMENTATION AND MAINTENANCE OF ALL EROSION AND SEDIMENT CONTROLS PROPOSED HEREIN.
9751 SOUTHERN PINE BLVD
CHARLOTTE, NC 28273
[phone]
ENGINEERING FIRM
LICENSE NUMBER: F-0176
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2. THE OWNER'S CONTRACTOR IS RESPONSIBLE FOR NOTIFYING UTILITY COMPANIES TO LOCATE ALL UNDERGROUND UTILITIES PRIOR TO ANY CONSTRUCTION. I I o
3. ANY PUMPING DISCHARGE FROM CONSTRUCTION DEWATERING SHOULD BE DISCHARGED THROUGH SILT BAGS.
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4. THE CONTRACTOR MUST TAKE NECESSARY ACTION TO MINIMIZE THE TRACKING OF MUD FROM CONSTRUCTION AREAS ONTO PAVED ROADWAYS. THE CONTRACTOR SHALL DAILY REMOVE MUD/SOIL FROM PAVEMENT, AS MAY BE REQUIRED. IF Z
EXCAVATED MATERIAL IS PLACED ON ROADWAY DURING CONSTRUCTION, THE CONTRACTOR SHOULD PLACE SAND OR ROCK SCREENINGS ON THE PAVEMENT UNDER THE MATERIAL.
STANDARDS AND DISCLAIMERS
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STANDARDS
EROSION AND SEDIMENT CONTROL MEASURES SHALL BE IN ACCORDANCE WITH THE NORTH CAROLINA SEDIMENTATION POLLUTION CONTROL ACT OF 1973. CONSTRUCTION DETAILS AND SPECIFICATIONS WITHIN THIS PLAN WERE DERIVED FROM THE
EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL DATED JUNE, 2006, CHAPTERS 6 AND 8 REVISED, MAY 2013, PREPARED BY THE NORTH CAROLINA SEDIMENTATION CONTROL COMMISSION, NCDEQ AND NCAES.
DISCLAIMER W
S&ME HAS NOT VERIFIED THE LOCATION OF ANY UTILITIES. THE LOCATION OF THE PROPOSED LAND DISTURBANCE AREA IS APPROXIMATE AND BASED ON INFORMATION PROVIDED BY THE OWNER. THE CONTRACTOR SHALL BE RESPONSIBLE FOR FIELD W
VERIFYING THE LOCATION OF ALL UTILITIES IN THE WORK AREA PRIOR TO CONSTRUCTION AND IS SOLELY RESPONSIBLE FOR SITE CONSTRUCTION SAFETY. cJ�
REFERENCE
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TAX PARCEL AND STREET CENTERLINE GIS DATA FOR THE SITE WAS OBTAINED FROM THE REFERENCED COUNTY GEOGRAPHIC INFORMATION SYSTEMS (GIS) DEPARTMENT. EXISTING CONTOUR GIS DATA WAS OBTAINED FROM THE NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION AND TRC SURVEYORS. HYDROLOGY GIS DATA WAS OBTAINED FROM THE NATIONAL HYDROGRAPHY DATASET. SOIL DATA WAS OBTAINED FROM THE NRCS SOIL DATA MART WEBSITE. THE LOCATION OF THE PROPOSED Z
LAND DISTURBANCE AREA IS APPROXIMATE AND BASED ON INFORMATION PROVIDED BY THE CONTRACTOR. PLEASE NOTE THIS DATA IS FOR INFORMATIONAL PURPOSES ONLY. IT IS NOT MEANT FOR DESIGN, LEGAL, OR ANY OTHER USES. THERE ARE NO
GUARANTEES ABOUT ITS ACCURACY. S&ME, INC. ASSUMES NO RESPONSIBILITY FOR ANY DECISION MADE OR ANY ACTIONS TAKEN BY THE USER BASED UPON INFORMATION OBTAINED FROM THE DATA WITHIN THIS DRAWING SET. W
NOTIFICATION OF LAND RESOURCES SEDIMENT AND EROSION CONTROL SELF -INSPECTION PROGRAM
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THE SEDIMENTATION POLLUTION CONTROL ACT WAS AMENDED IN 2006 TO REQUIRE THAT PERSONS RESPONSIBLE FOR LAND -DISTURBING ACTIVITIES INSPECT A PROJECT AFTER EACH PHASE OF THE PROJECT TO MAKE SURE THAT THE APPROVED EROSION AND Z
SEDIMENTATION CONTROL PLAN IS BEING FOLLOWED. RULES DETAILING THE DOCUMENTATION OF THESE INSPECTIONS TOOK EFFECT OCTOBER 1ST, 2010. THE SELF -INSPECTION PROGRAM IS SEPARATE FROM THE WEEKLY SELF-MONITORING PROGRAM OF THE WJ
NPDES STORMWATER PERMIT FOR CONSTRUCTION ACTIVITIES. THE FOCUS OF THE SELF -INSPECTION REPORT IS THE INSTALLATION AND MAINTENANCE OF EROSION AND SEDIMENTATION CONTROL MEASURES ACCORDING TO THE APPROVED PLAN. THE
INSPECTIONS MUST BE CONDUCTED AFTER EACH PHASE OF THE PROJECT, AND CONTINUED UNTIL PERMANENT GROUND COVER IS ESTABLISHED IN ACCORDANCE WITH NPDES PERMIT REQUIREMENTS. THE SELF -INSPECTION FORM CAN BE FOUND AT THE
FOLLOWING WEBSITE:
https:Hdeq.nc.gov/about/divisions/energy-mineral-land-resources/erosion-sediment-control/forms
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FENCE OR HANDRAILS - (SHOWN FOR INSTALLATION ONL
FENCE OR HANDRAIL POSTS SHALL BE INSTALLED IN SONOTUBES (PLACED DURING
WALL CONSTRUCTION) AND BACKFILLED WITH CONCRETE OR GROUT, DRIVEN AFTER
WALL CONSTRUCTION OR INSTALLED IN HAND DUG POST HOLES. POST SHALL BE
INSTALLED NOT CLOSER THAN 3 FEET FROM FACE OF WALL. AUGERING BEHIND WALL
IS NOT ALLOWED.
DETAIL SHOWN FOR INSTALLATION ONLY. ACTUAL DESIGN OF FENCE POST SUPPORT
SHOULD BE PERFORMED BY MANUFACTURER AND/OR STRUCTURAL ENGINEER.
TOW (TOP OF WALL)
SETBACK = 1 5/8"
(5.0° BATTER)
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CRUSHED STONE LEVELINv
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(ASTM NO. 57 STONE)
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EVALUATED AND APPROVED
SUBGRADE SOILS SUITABLE TO
SUPPORT THE DESIGN CONTACT
PRESSURES (AS A MINIMUM)
SHOWN ON WALL FACE ELEVATION
(ASTM NO. 57 STONE)
8' (MIN.)
(AS SHOWN)
FENCE POST (TYP.)
(BY OTHERS)
FINISHED GRADE
BEHIND WALL - SLOPE _
AWAY FROM BACK OF WALL z
EROSION MATTING AND SEEDING 2
AS SHOWN ON SHEET 10
1-40 2' (MIN.)-�I 1
-1 i ,_
-I I1
1 1 _145��T
- CLASS 3000 CONCRETE
OR GROUT
NON -WOVEN FILTER FABRIC
DRAINAGE AGGREGATE (ASTM NO/57 STONE)
4" DIA. PERFORATED OR SLOTTE
CONTINUOUS COLLECTION PIP (TYP.)
TO APPROVED OUTFALL
X18" STEP
LING PAD 23" (MIN.)
HALF BLOCK LENGTH
REDI-ROCK WALL STEP-UP SECTION
NTS
SLOPE INCLINATIONS SHALL BE
IN ACCORDANCE WITH LOCAL,
STATE AND OSHA REGULATIONS
1 REDI-ROCK BLOCK WALLS
7 SCALE: N.T.S.
1.0 GENERAL
1.1 CONSTRUCTION AND INSPECTION OF THE GRAVITY SEGMENTAL RETAINING
WALL SHALL BE IN ACCORDANCE WITH THE RECOMMENDATIONS OF THE
BLOCK MANUFACTURER, THE ELEVATION VIEW, DETAILS, AND THESE
SPECIFICATIONS.
2.0 MATERIALS
2.1 SOIL INSTALLED IN THE RETAINED ZONE SHALL BE FREE OF ORGANIC OR
OTHER DELETERIOUS MATERIALS AND EXHIBIT AN EFFECTIVE ANGLE OF
INTERNAL FRICTION, �' = 30°.
2.2 SRW UNITS - SRW UNITS SHALL CONSIST OF 41" BOTTOM AND MIDDLE
UNITS AND 28" TOP AND MIDDLE UNITS MANUFACTURED BY REDI-ROCK
AND TESTED IN ACCORDANCE WITH NCMA SPECIFICATIONS AND
GUIDELINES. ALTERNATE SRW UNITS MUST BE APPROVED S&ME, INC. PRIOR
TO CONSTRUCTION.
2.3 FILTER FABRIC - GEOTEXTILE FILTER FABRIC SHALL CONSIST OF NEEDLE
PUNCHED NON -WOVEN POLYPROPYLENE MATERIAL WHICH MEETS THE
AASHTO M 288-2000 CLASS 3 STRENGTH CRITERIA. IT SHALL ALSO HAVE A
MAXIMUM AVERAGE ROLL VALUE OF 0.25 MM FOR ITS APPARENT OPENING
SIZE AND PERMITTIVITY OF AT LEAST 0.2/SEC. PRE -APPROVED NONWOVEN
GEOTEXTILES INCLUDE GEOTEX 801 AND TC MIRAFI 160N.
2.4 LEVELING PAD AGGREGATE - SHALL MEET ASTM C-33 CRITERIA FOR SIZE NO.
57 STONE. DRAINAGE STONE SHALL BE COMPACTED WITH THE USE OF A
VIBRATORY PLATE COMPACTOR.
2.5 DRAINAGE PIPE - DRAINAGE PIPE LOCATED BEHIND SRW FACE SHALL
CONSIST OF 4 -INCH DIAMETER SLOTTED OR PERFORATED HDPE OR
SCHEDULE 40 PVC PIPE. SLOTS OR PERFORATIONS SHALL BE SIZED BASED
ON THE GRADATION OF THE BACKFILL AGGREGATE.
3.0 EXCAVATION AND FOUNDATION PREPARATION
3.1 THE CONTRACTOR SHALL EXCAVATE TO THE LINES AND GRADES SHOWN ON
THE CONSTRUCTION DRAWINGS, EXCAVATIONS SHALL BE MAINTAINED IN
ACCORDANCE WITH OSHA, STATE AND LOCAL REGULATIONS.
3.2 FOUNDATION AND RETAINED SOIL AREAS SHALL BE EVALUATED AND
PROOF -ROLLED BY THE OWNER'S ENGINEER TO VERIFY THAT THE WALL AREA
IS DIRECTLY UNDERLAIN BY SUITABLE BEARING MATERIALS TO SUPPORT THE
RETAINING WALL SYSTEM.
3.3 UNDERCUTTING AND STABILIZATION USING SURGE STONE AND GEOTEXTILE
FABRIC WILL BE REQUIRED TO PROVIDE SUITABLE BEARING IN AREAS SHOWN
IN THE WALL FACE ELEVATION. THE REQUIREMENT FOR UNDERCUTTING
AND/OR STABILIZATION SHALL BE AS DETERMINED BY THE GEOTECHNICAL
ENGINEER.
3.4 DEWATERING WILL ALSO BE REQUIRED TO PERFORM
UNDERCUT/STABILIZATION AND TO INSTALL THE LOWER PORTION OF THE
WALL. DEWATERING MEANS AND METHODS SHALL BE THE RESPONSIBILITY
OF THE CONTRACTOR WITH THE PROVISION THAT THE EXCAVATION IS KEPT
DRY UNTIL CONSTRUCTION HAS ACHIEVED A SUITABLE LEVEL ABOVE
GROUNDWATER.
4.0 LEVELING PAD PREPARATION AND CONSTRUCTION
4.1 THE LEVELING PAD SHALL BE CONSTRUCTED WITH COMPACTED CRUSHED
AGGREGATE THAT MEETS THE CRITERIA IN SECTION 2.0.
4.2 THE LEVELING PAD SHALL BE AT LEAST 65 INCHES WIDE AND 12 INCHES
THICK.
4.3 THE LEVELING PAD SHALL BE CONSTRUCTED SO AS TO PROVIDE A LEVEL,
HARD SURFACE UPON WHICH TO PLACE THE FIRST COURSE OF SRW UNITS.
4.4 CRUSHED AGGREGATE USED FOR THE LEVELING PAD SHALL BE COMPACTED
USING A VIBRATORY SLED TO THE SATISFACTION OF THE OWNER'S ENGINEER.
4.5 THE LEVELING PAD SHALL BE PREPARED TO ENSURE FULL CONTACT BETWEEN
THE PAD AND THE FIRST COURSE OF SRW UNITS.
5.0 WALL CONSTRUCTION
5.1 THE WALL SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE SRW
MANUFACTURER'S RECOMMENDATIONS AND THESE REQUIREMENTS.
5.2 THE DRAINAGE PIPE SHALL BE CONNECTED TO A SOLID COLLECTOR PIPE AND
DISCHARGED FROM THE LOWEST POINT(S) ALONG THE WALL TO AN
APPROVED OUTFALL AREA.
5.3 INSTALL BACKFILL IN RETAINED ZONE IN COMPACTED LIFTS NO GREATER
THAN 8 INCHES IN THICKNESS AND IN ACCORDANCE WITH THE
REQUIREMENTS IN SECTION 6.
6.0 SOIL COMPACTION
6.1 THE OWNER'S ENGINEER SHALL EVALUATE AND DOCUMENT COMPACTION
OF STONE IN THE RETAINED ZONE IN ACCORDANCE WITH THESE
REQUIREMENTS. ALL FILL MATERIAL SHALL MEET THE REQUIREMENTS OF
SECTION 2.0 AND SHALL BE PLACED IN MAXIMUM 8 -INCH THICK LIFTS
(LOOSE MEASURE) AND UNIFORMLY COMPACTED WITH APPROPRIATE
COMPACTION EQUIPMENT TO THE SATISFACTION OF THE OWNER'S
ENGINEER.
6.2 HEAVY COMPACTION EQUIPMENT OR OTHER HEAVY CONSTRUCTION
EQUIPMENT MAY NOT BE OPERATED WITHIN 3 FEET OF THE BACK OF THE
SRW UNITS.
6.3 WITHIN 3 FEET OF THE BACK OF THE SRW UNITS, ONLY HAND -OPERATED
COMPACTION MAY BE USED.
6.4 IN THE ABSENCE OF THE OWNER'S REQUIREMENTS FOR MORE STRINGENT
COMPACTION SPECIFICATIONS, FILL SOIL IN CREST SLOPES SHALL BE
COMPACTED TO WITHIN 95 PERCENT OF ITS MAXIMUM DRY DENSITY AND
TO WITHIN 2 PERCENT OF ITS OPTIMUM MOISTURE CONTENT AS
DETERMINED IN ACCORDANCE WITH ASTM D-698 (STANDARD PROCTOR
METHOD).
7.0 DRAINAGE AND EROSION PROTECTION
7.1 AT THE END OF EACH WORK DAY, THE CONTRACTOR SHALL GRADE THE
SURFACE OF THE LAST LIFT OF RETAINED SOIL AWAY FROM THE WALL FACE
AND COMPACT.
7.2 THE CONTRACTOR SHALL INSTALL TEMPORARY SOIL BERMS AND DRAINAGE
DITCHES AS NECESSARY TO PREVENT THE SURFACE FLOW OF WATER
TOWARD THE RETAINED SOIL ZONE.
7.3 THE PONDING OF WATER ABOVE OR WITHIN 20 FEET BEHIND THE RETAINED
SOIL ZONE DURING OR AFTER WALL CONSTRUCTION SHALL NOT BE
PERMITTED.
7.4 ALL TOE AND CREST SLOPES SHALL BE CONSTRUCTED OUTSIDE OF DESIGN
LIMITS AND CUT BACK TO ACHIEVE PROPER COMPACTION AT THE SLOPE
FACE. ADDITIONALLY, SLOPES SHALL BE VEGETATED AND PROTECTED FROM
EROSION AS SOON AS POSSIBLE FOLLOWING THEIR CONSTRUCTION.
8.0 WALL DESIGN
8.1 THE DESIGN WAS PERFORMED IN ACCORDANCE WITH NCMA GUIDELINES
FOR MODULAR WALL DESIGN BASED ON S&ME'S EXPERIENCE WITH SOILS
COMMON TO THE CHARLOTTE, NORTH CAROLINA AREA AND INFORMATION
OBTAINED FROM HAND AUGER BORINGS AND DCP TESTING PERFORMED BY
S&ME ON MAY 30, 2018. THE FOLLOWING DESIGN PROPERTIES USED FOR
DESIGN SHALL BE VERIFIED PRIOR TO WALL CONSTRUCTION:
8.2 DESIGN SOIL PROPERTIES
ZONE C. 7m
RETAINED SOIL 30° 0 PSF 120 PCF
LEVELING PAD 38° 0 PSF 120 PCF
FOUNDATION SOIL 300 0 PSF 120 PCF
8.3 DESIGN PARAMETERS
FS SLIDING = 1.5
FS BEARING = 2.0
FS OVERTURNING = 2.0
8.4 EXTERNAL LOADING
NONE
8.5 ADDITIONAL LOADS
ANY UTILITIES SUCH AS LIGHT POLES, HAND RAILS, GUARDRAILS, OR
DRAINAGE STRUCTURES TO BE INSTALLED IN THE VICINITY OF THE WALLS
MUST BE DESIGNED AND CONSTRUCTED SO THAT THEY DO NOT ADD
LATERAL FORCES TO BE RESISTED BY THE WALL SYSTEM. IN ADDITION, ANY
EXCAVATION (I.E., INSTALLATION OF CONCRETE GUTTERS, SHRUB AND TREE
PLANTING, ETC.) CONDUCTED IN THE VICINITY OF THE WALL MUST BE DONE
WITHOUT DAMAGING THE WALL. PLEASE CONTACT THE WALL DESIGN
ENGINEER IF THERE ARE ANY QUESTIONS.
9.0 ENGINEER INSPECTION
9.1 A LETTER FROM THE ON-SITE GEOTECHNICAL ENGINEER SHALL BE PROVIDED
TO THE OWNER AND/OR OWNER'S REPRESENTATIVE STATING THAT THE
FOUNDATION MATERIALS ARE ACCEPTABLE FOR WALL SUPPORT, AND THAT
THE BACKFILL MATERIALS HAVE BEEN PROPERLY COMPACTED AND HAVE
MET THE SPECIFICATIONS. THIS LETTER SHALL BE SIGNED BY A REGISTERED
ENGINEER IN NORTH CAROLINA.
9751 SOUTHERN PINE BLVD
CHARLOTTE, NC 28273
[phone]
ENGINEERING FIRM
LICENSE NUMBER: F-0176
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DRAWING NUMBER

CONTROL JOINT (IF NEEDED)
EXISTING 18" DIA. CMP REMOVE ONLY THE MINIMUM
2$ I NUMBER OF BLOCKS REQUIRED
TO FIT PIPE THROUGH WALL
(((( ((( 9751 SOUTHERN PINE BLVD
' S 1=�Al 1 I S J rnnirRFT� rni i nRCHARLOTTE, 72 28273
J `� V / /l [phone]
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USE ADEQUATE MEASURES
• TO ADDRESS SCOUR,
RUNOFF, AND OTHER ISSUES
1.5' AT BASE OF WALL
SIDE VIEW PLAN VIEW PLAN VIEW
MAX 5" CONCRETE COLLAR NON -WOVEN GEOTEXTILE FABRIC
OPENING (CAST -IN-PLACE AROUND PIPE)
(AASHTO M288 SURVIVABILITY CLASS 1)
3600 AROUND PIPE AND BEHIND COLLAR
EL. 691.5
PIPE PROTRUDING THROUGH
NOTES: WALL
1. PLACE ON ALL STORM PIPES THAT OUTLET TO THE UNSECURED SIDE OF THE FENCE. >
2. CONTRACTOR TO SUBMIT PIPE GRATES TO OWNER AND ENGINEER FOR APPROVAL. a
EXISTING 18" DIA. CMP 4.5 3. GRATES TO BE LOCATED ON OUTFLOW SIDE OF PIPE IF POSSIBLE.
PIPE OPENING 4,. USE ADEQUATE MEASURES Y
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GROUT CONNECTION
(OTHER CONNECTIONS AVAILAE RUNOFF, AND OTHER ISSUES �
AT BASE OF WALL::::�
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SECTION A -A
PROJECT NUMBER
7235-18-014
CONCRETE COLLAR
DRAWING NUMBER
Q SCALE: 1 " = 10'
9 11

VARIABLE AS DIRECTED
BY THE ENGINEER
(8 -FEET MAXIMUM)
(SEE SILT FENCE CONSTRUCTION NOTES 5 & 6)
5 -FEET SELF FASTENER
ANGLE STEEL POST q�
WOVEN FILTER FABRIC WOVEN FILTER FABRIC
SILT FENCE OUTLET NOTES: 9751 SOUTHERN PINE BLVD
28273
NC
1. USE 24 -INCH FILTREXX® COMPOST FILTER SOCK OR ENGINEER APPROVED CHARLOTTE(704) 523, , NC
EQUIVALENT. FILTER SOCKS SHALL BE A MINIMUM OF 8 -FEET IN LENGTH.
rn MINIMUM OF 16 -INCH HEIGHT OF COMPOST FILTER SOCK AFTER INSTALLATION. ENGINEERING FIRM
18-24" FI LTE 2. WATTLES ARE NOT TO BE USED IN PLACE OF COMPOST SOCK OR STONE. LICENSE NUMBER: F-0176
FABRIC COMPACTED BACKFILL 3. 5 -FEET SELF FASTENER ANGLE STEEL POST OR 2 -INCH BY 2 -INCH HARD
FLOW WOODEN STAKES SHALL BE INSTALLED THROUGH THE MIDDLE OF THE
COMPOST FILTER SOCK. SPACE STAKES A MAXIMUM OF 2 -FEET. DRIVE THE
HARD WOODEN STAKE TO A MINIMUM OF 1 -FOOT INTO THE GROUND LEAVING
_ A MINIMUM OF 3 -INCH PROTRUDING ABOVE THE COMPOST FILTER SOCK.
4. INSTALL MINIMUM OF 1 -FOOT OVERLAP OF SILT FENCE, COMPOST FILTER SOCK,
III I dI AND WIRE REINFORCEMENT. se Lu=III- 1=III=III=III=III=III=III=III=III=III=III=III=III=III=III=III- I I=III=-IIIIIII IIII I _I 5. USE POULTRY NETTING OR HARDWARE CLOTH WITH A MINIMUM 24 GAUGE
N =III=111 �I 1=III=III=III=III=III=III=III=III=III=III=III=III=III=III= �I=�'=1=I I� I I =I I -I WITH 1 -INCH MESH OPENINGS. Z
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_ I I -III u I I BASEDDIRECTED BY THE OWNER'S UPON FIELD CONDITIONS. ECTOR OR DESIGNATED REPRESENTATIVE AND
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3 -FEET 7. SILT FENCE OUTLETS SHOULD BE INSTALLED AT POINTS OF CONCENTRATED
FLOW AND LOW POINTS. IF WATER IS POOLING BEHIND INSTALLED SILT FENCE
ANCHOR SKIRT 4" MINIMUM
SEDIMENT AN ADDITIONAL SILT FENCE OUTLET MAY NEED TO BE INSTALLED.
PIT 8. WOOD MULCH OR COMPOST TO % HEIGHT OF COMPOST FILTER SOCK
24 -INCH COMPOST FILTER SOCK (SEE 2 -FEET WOOD MULCH 9. THE CONTRACTOR SHALL EXCAVATE A SMALL SEDIMENT PIT (3 -FEET X 2 -FEET X
(SEE NOTE 1) NOTE (SEE NOTE 8) 2 -FEET) AT 6 -INCH MINIMUM FROM AND ADJACENT TO THE UPSTREAM SIDE OF
SILT FENCE MATERIALS 6. EXTRA STRENGTH FILTER FABRIC WITH 6 FEET POST SPACING DOES NOT REQUIRE WIRE 9) SILT FENCE OUTLET TO INCREASE THE AMOUNT OF SEDIMENT STORAGE.
1. USE A SYNTHETIC FILTER FABRIC OF AT LEAST 95% BY WEIGHT OF POLYOLEFINS OR MESH SUPPORT FENCE. SECURELY FASTEN THE FILTER FABRIC DIRECTLY TO POSTS. WIRE OR 14 1 1 z 10AN ENERGY DISSIPATOR SHALL BE INSTALLED ON THE DOWNSTREAM SIDE OF
POLYESTER, WHICH IS CERTIFIED BY THE MANUFACTURER OR SUPPLIER AS CONFORMING PLASTIC ZIP TIES SHOULD HAVE MINIMUM 50 POUND TENSILE STRENGTH. . STAKE THE SILT FENCE OUTLET, AS NEEDED, BASED ON CONDITIONS IN THE FIELD.
TO THE REQUIREMENTS IN ASTM D 6461, WHICH IS SHOWN IN PART IN TABLE 6.62B. (SEE NOTE 3)
SYNTHETIC FILTER FABRIC SHOULD CONTAIN ULTRAVIOLET RAY INHIBITORS AND 7. EXCAVATE A TRENCH APPROXIMATELY 4 INCHES WIDE AND 8 INCHES DEEP ALONG THE 2 -FEET 2 -FEET 2 -FEET
STABILIZERS TO PROVIDE A MINIMUM OF 6 MONTHS OF EXPECTED USABLE CONSTRUCTION PROPOSED LINE OF POSTS AND UPSLOPE FROM THE SILT FENCE (FIGURE 6.62A). /4 ® ® ® ASILT FENCE OUTLET INSPECTION & MAINTENANCE:
LIFE AT A TEMPERATURE RANGE OF 0 TO 120° F. 1. REGULAR INSPECTIONS OF SILT FENCE OUTLETS SHALL BE CONDUCTED ONCE
8. PLACE 12 INCHES OF THE FABRIC ALONG THE BOTTOM AND SIDE OF THE TRENCH.
2. ENSURE THAT POSTS FOR S ILT FENCES ARE 1.25 LB/LINEAR FT MINIMUM STEEL WITH A EVERY CALENDAR WEEK AND, AS RECOMMENDED, WITHIN 24 -HOURS AFTER
MINIMUM LENGTH OF 5 FEET. MAKE SURE THAT STEEL POSTS HAVE PROJECTIONS TO 9. BACKFILL THE TRENCH WITH SOIL PLACED OVER THE FILTER FABRIC AND COMPACT. EACH RAINFALL EVENT THAT PRODUCES 1/2 -INCH OR MORE OF PRECIPITATION.
FACILITATE FASTENING THE FABRIC. THOROUGH COMPACTION OF THE BACKFILL IS CRITICAL TO SILT FENCE PERFORMANCE. 2. MAKE ANY NECESSARY REPAIRS IMMEDIATELY.
8 -FEET OF 24 -INCH COMPOST FILTER SOCK
3. FOR REINFORCEMENT OF STANDARD STRENGTH FILTER FABRIC, USE WIRE FENCE WITH A 10. DO NOT ATTACH FILTER FABRIC TO EXISTING TREES. (SEE NOTE 1) 3. REMOVE ACCUMULATED SEDIMENT AND ANY DEBRIS. THE COMPOST SOCK
SILT FENCE MUST BE REPLACED IF CLOGGED OR TORN.
MINIMUM 14 GAUGE AND A MAXIMUM MESH SPACING OF 6 INCHES.
SILT FENCE INSTALLATION USING THE SLICING METHOD Q J 4. IF PONDING BECOMES EXCESSIVE, THE SOCK MAY NEED TO BE REPLACED WITH A
TABLE 6.62B SPECIFICATION FOR SILT FENCE FABRIC SILT FENCE INSTALLATION USING THE SLICING METHOD INSTEAD OF EXCAVATING A TRENCH, D LARGER DIAMETER OR A DIFFERENT MEASURE. THE SOCK NEEDS TO BE
PLACING FABRIC AND THEN BACKFILLING TRENCH S ILT FENCE MAY BE INSTALLED USING REINSTALLED IF UNDERMINED OR DISLODGED.
TEMPORARY SILT FENCE MATERIAL PROPERTY REQUIREMENTS
PLAN -VIEW
5. THE COMPOST SOCK SHALL BE INSPECTED UNTIL LAND DISTURBANCE IS
COMPLETE AND THE AREA ABOVE THE MEASURE HAS BEEN PERMANENTLY
STABILIZED.
6. SHOULD THE SILT FENCE ADJACENT TO THE OUTLET COLLAPSE, TEAR, OR
TEST SUPPORTED' UNSUPPORTED
TYPE OF
UNITS
MATERIAL SILT FENCE 'SILT FENCE
VALUE
GRAB STRENGTH ASTM D 4632 N (LBS)
MACHINE DIRECTION 400 550
MARV
(90) (90)
X -MACHINE DIRECTION 400 450
MARV
(90) (90)
PERMITTIVITY2 ASTM D 4491 SEC -1 0.05 0.05
MARV
APPARENT OPENING
SIZE ASTM D 4751 MM 0.60 0.60
MAX
ARV3
(US SIEVE #) (30) (30)
ULTRAVIOLET % RETAINED 70% AFTER 70% AFTER
1. THE BASE OF BOTH END POSTS SHOULD BE AT LEAST ONE FOOT HIGHER THAN THE MIDDLE
STABILITY ASTM D 4355 STRENGTH 500H OF 500H OF
TYPICAL
EXPOSURE EXPOSURE
'SILT FENCE SUPPORT SHALL CONSIST OF 14 GAGE STEEL WIRE WITH A MESH
SPACING OF 150 MM (6 INCHES), OR PREFABRICATED POYLMER MESH OF EQUIVALENT
STRENGTH.
2THESE DEFAULT VALUES ARE BASED ON EMPIRICAL EVIDENCE WITH A VARIETY OF
SEDIMENT. FOR ENVIRONMENTALLY SENSITIVE AREAS, A REVIEW OF PREVIOUS
OF THE FENCE. CHECK WITH A LEVEL IF NECESSARY.
EXPERIENCE AND/OR SITE OR REGIONALLY SPECIFIC GEOTEXTILE TESTS IN
ACCORDANCE WITH TEST METHOD D 5141 SHOULD BE PERFORMED BY THE AGENCY
TO CONFIRM SUITABILITY OF THESE REQUIREMENTS.
3 A MEASURED IN ACCORDANCE WITH TEST METHOD D 4632.
SPECIALLY DESIGNED EQUIPMENT THAT INSERTS THE FABRIC INTO A CUT SLICED IN THE
GROUND WITH A DISC (SEE NCDEQ EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN
MANUAL, CHAPTERS 6 AND 8 REVISED, MAY 2013, FIGURE 6.62B).
SILT FENCE INSTALLATION SPECIFICATIONS
PLAN -VIEW
5. THE COMPOST SOCK SHALL BE INSPECTED UNTIL LAND DISTURBANCE IS
COMPLETE AND THE AREA ABOVE THE MEASURE HAS BEEN PERMANENTLY
STABILIZED.
6. SHOULD THE SILT FENCE ADJACENT TO THE OUTLET COLLAPSE, TEAR, OR
>
1. THE BASE OF BOTH END POSTS SHOULD BE AT LEAST ONE FOOT HIGHER THAN THE MIDDLE
6-FEETa.1-FOOT MIN. OVERLAP BECOME INEFFECTIVE, REPAIR OR REPLACE IT PROMPTLY.
a
OF THE FENCE. CHECK WITH A LEVEL IF NECESSARY.
SILT FENCE 7. REMOVE ALL FENCING AND OUTLET MATERIALS AND UNSTABLE SEDIMENT
WIRE REINFORCEMENT DEPOSITS AND BRING THE AREA TO GRADE AND STABILIZE IT AFTER THE
_
2. INSTALL POSTS 4 FEET APART IN CRITICAL AREAS AND 6 FEET APART ON STANDARD
(SEE NOTE 5) CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STABILIZED.
APPLICATIONS.
8. REMOVE SEDIMENT ACCUMULATED WITHIN THE SEDIMENT PIT AS NEEDED TO
m
3. INSTALL POSTS 2 FEET DEEP ON THE DOWNSTREAM SIDE OF THE SILT FENCE, AND AS CLOSE
WOOD MULCH MAINTAIN ADEQUATE STORAGE.
AS POSSIBLE TO THE FABRIC, ENABLING POSTS TO SUPPORT THE FABRIC FROM UPSTREAM
(SEE NOTE 8)
WATER PRESSURE.
COMPOST MATERIAL NOTE:
4. INSTALL POSTS WITH THE NIPPLES FACING AWAY FROM THE SILT FABRIC.
THE COMPOST MEDIA SHALL BE DERIVED FROM WELL -DECOMPOSED ORGANIC
- - - - - - - - -il - - MATTER SOURCE PRODUCED BY CONTROLLED AEROBIC (BIOLOGICAL)
5. ATTACH THE FABRIC TO EACH POST WITH THREE TIES, ALL SPACED WITHIN THE TOP 8
I=I I I=I1511I=I I I=I I MI I Mi 1511511 El I I=I I I=I DECOMPOSITION THAT HAS BEEN SANITIZED THROUGH THE GENERATION OF HEAT
INCHES OF THE FABRIC. ATTACH EACH TIE DIAGONALLY 45 DEGREES THROUGH THE FABRIC,
= I II -III -III -III -III -III -III -III -III -III -II I -III AND STABILIZED TO THE POINT THAT IT IS APPROPRIATE FOR THIS PARTICULAR
1 I I=I I I=I I FE I El I=I I=I I I=I I El I I=I I I=I I I=I 151151151151151 I=I 1 I=I I I=III=III=
WITH EACH PUNCTURE AT LEAST 1 INCH VERTICALLY APART. ALSO, EACH TIE SHOULD BE
I M I I=I I I=I I I=I I I I I I=I � I=I � I - I � I -I I I=I I I=I I I -I I I -I I I=I I I -I I I -I I I I1 I=I � I=I1 I -I � I �I APPLICATION. COMPOST MATERIAL SHALL BE PROCESSED THROUGH PROPER
Z
POSITIONED TO HANG ON A POST NIPPLE WHEN TIGHTENED TO PREVENT SAGGING.
=IIIi III -I I -I I -I I-III-III-II5I1I-IIMI I I-III-I1I-III-III-III-I I -I I I -I I FE THERMOPHILIC COMPOSTING, MEETING THE US ENVIRONMENTAL PROTECTION
III,-III=)II III-Iii--1II-III III=111=111=111 -III, II -'
O
; _)II-III ,III, iIIIIi,I AGENCY'S DEFINITION FOR A PROCESS TO FURTHER REDUCE PATHOGENS' (PERP), AS
a
6. WRAP APPROXIMATELY 6 INCHES OF FABRIC AROUND THE END POSTS AND SECURE WITH 3
DEFINED UNDER 40 CFR PART 503.
TIES.
SECTION A -A'
PARTICLE SIZE DISTRIBUTION
7. NO MORE THAN 24 INCHES OF A 36 INCH FABRIC IS ALLOWED ABOVE GROUND LEVEL.
SIEVE SIZE PERCENT PASSING SELECTED SIEVE MESH SIZE, DRY WEIGHT BASIS
2 -INCH 99 % (3" MAXIMUM PARTICLE SIZE)
8. THE INSTALLATION SHOULD BE CHECKED AND CORRECTED FOR ANY DEVIATIONS BEFORE
COMPACTION.
3/8 -INCH 30-50%
9. COMPACTION IS VITALLY IMPORTANT FOR EFFECTIVE RESULTS. COMPACT THE SOIL
DISPOSAL/RECYCLING FOR COMPOST FILTER MATERIAL:
IMMEDIATELY NEXT TO THE SILT FENCE FABRIC WITH THE FRONT WHEEL OF THE TRACTOR,
1. COMPOST MEDIA IS A COMPOSTED ORGANIC PRODUCT RECYCLED AND
SKID STEER, OR ROLLER EXERTING AT LEAST 60 POUNDS PER SQUARE INCH. COMPACT THE
24 -INCH COMPOST FILTER SOCK
(SEE NOTE 1) MANUFACTURED FROM LOCALLY GENERATED ORGANIC, NATURAL, AND
UPSTREAM SIDE FIRST, AND THEN EACH SIDE TWICE FOR A TOTAL OF 4 TRIPS. BIOLOGICALLY BASED MATERIALS. LLJ
SILT FENCE CONSTRUCTION WIRE REINFORCEMENT 2. ONCE ALL SOIL HAS BEEN STABILIZED AND CONSTRUCTION ACTIVITY HAS BEEN e
1. CONSTRUCT THE SILT FENCE OF STANDARD STRENGTH OR EXTRA STRENGTH SYNTHETIC SILT FENCE MAINTENANCE (SEE NOTE 5) I 6 -INCH COMPLETED, THE COMPOST MEDIA MAY BE DISPERSED WITH A LOADER, RAKE,
FILTER FABRICS. 1. INSPECT SILT FENCES LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY I 2 -FEET BULLDOZER OR SIMILAR DEVICE AND MAY BE INCORPORATED INTO THE SOIL AS
REQUIRED REPAIRS IMMM EDIATELY. AN AMENDMENT OR LEFT ON THE SOIL SURFACE TO AID IN PERMANENT z
2. ENSURE THAT THE HEIGHT OF THE S ILT FENCE DOES NOT EXCEED 24 INCHES ABOVE THE SEEDING OR LANDSCAPING.
GROUND SURFACE. (HIGHER FENCES MAY IMPOUND VOLUMES OF WATER SUFFICIENT TO 2. SHOULD THE FABRIC OF A S ILT FENCE COLLAPSE, TEAR, DECOMPOSE OR BECOME
CAUSE FAILURE OF THE STRUCTURE.) INEFFECTIVE, REPLACE IT PROMPTLY. 3. LEAVING THE COMPOST MEDIA ON SITE REDUCES REMOVAL AND DISPOSAL Z
COSTS COMPARED TO OTHER SEDIMENT CONTROL DEVICES. THE MESH NETTING
3. CONSTRUCT THE FILTER FABRIC FROM A CONTINUOUS ROLL CUT TO THE LENGTH OF THE 3. REMOVE SEDIMENT DEPOSITS AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME 1=I I=I I=I I=I I=I I=I I=I I=III=III=I I I= I=I I=� I MATERIAL WILL BE EXTRACTED FROM THE MEDIA AND DISPOSED OF PROPERLY.
-ISI-III-III-III-III-III-III-III=III=III SEDIMENT III III -III-
SILT FENCE TO AVOID JOINTS. WHEN JOINTS ARE NECESSARY, SECURELY FASTEN THE FILTER FOR THE NEXT RAIN AND TO REDUCE PRESSURE ON THE FENCE. TAKE CARE TO AVOID =I I I=I I I=I I I=I I I=III=III=III=III=III=I I L I I=) THE PHOTODEGRADABLE MESH NETTING MATERIAL WILL DEGRADE IN 2 TO 5 N
111=III=III =III III=III,,=III=III=III PIT I��-III=
FABRIC ONLY AT A SUPPORT POST WITH 4 FEET MINIMUM OVERLAP TO THE NEXT POST. UNDERMINING THE FENCE DURING CLEANOUT. ' -III-III-� I (SEE NOTE 9) .III=III=III-I I YEARS IF LEFT ONSITE. BIODEGRADABLE MESH NETTING MATERIAL IS AVAILABLE
AND DOES NOT NEED TO BE EXTRACTED AND DISPOSED OF, AS IT WILL
-1 � I -III- �-III III -III- N
4. SUPPORT STANDARD STRENGTH FILTER FABRIC BY WIRE MESH FASTENED SECURELY TO THE 4. REMOVE ALL FENCING MATERIALS AND UNSTABLE SEDIMENT DEPOSITS AND BRING THE -III-I I III= I -III- COMPLETELY DECOMPOSE IN APPROXIMATELY 6 TO 12 MONTHS. USING w
UPSLOPE SIDE OF THE POSTS. EXTEND THE WIRE MESH SUPPORT TO THE BOTTOM OF THE AREA TO GRADE AND STABILIZE IT AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN 1=-1
BIODEGRADABLE COMPOST SOCKS COMPLETELY ELIMINATES THE NEED AND O Q
TRENCH. FASTEN THE WIRE REINFORCEMENT, THEN FABRIC ON THE UPSLOPE SIDE OF THE PROPERLY STABILIZED. 1I=III=III-III-III=I I COST OF REMOVAL AND DISPOSAL. Z Z
FENCE POST. WIRE OR PLASTIC ZIP TIES SHOULD HAVE MINIMUM 50 POUND TENSILE SECTION m Q
STRENGTH. REF: NCDEQ EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL, CHAPTERS 6 B -B' W Q
AND 8 REVISED, MAY 2013 W w V
5. WHEN A WIRE MESH SUPPORT FENCE IS USED, SPACE POSTS A MAXIMUM OF 8 FEET APART. x+ Of _
SUPPORT POSTS SHOULD BE DRIVEN SECURELY INTO THE GROUND A MINIMUM OF 24 Z N �
INCHES. (fj Lu p
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6 SILT FENCE 7 SILT FENCE OUTLET
10 SCALE: N.T.S
10 SCALE: N.T.S � LL V
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PROJECT NUMBER
7235-18-014
DRAWING NUMBER
10 11

2 -INCH X 2 -INCH X 36 -INCH HARD WOODEN
TEMPORARY MATTING NOTES:
EXTEND BLANKET A MINIMUM OF 3'-0"
STAKE PLACED 10' ON CENTER
y w OVER CREST OF SLOPE.
w w w
(SEE NOTE 2)
1. TEMPORARY MATTING INSTALLED ON SLOPES IN UPLAND AREAS SHALL BE
•
w w w w TRENCHING NEEDED IF A MINIMUM
w w y y y w
NAG BIONET S75BN OR ENGINEER APPROVED EQUIVALENT. TEMPORARY
OF 3'-0" IS NOT AVAILABLE AT THE
w w w w
COIR MATTING INSTALLED ALONG STREAMBANK SHALL BE NAG BIONET
w w w w OF SLOPE
AREA TO BECREST
PROTECTED
y w w w
y w y y y w
C700BN OR ENGINEER APPROVED EQUIVALENT.
COMPOST FILTER SOCK NOTES: COMPOST FILTER SOCK MAINTENANCE
w y y Y y
2. PREPARE SOIL BEFORE INSTALLING TEMPORARY MATTING, INCLUDING ANY
1. USE 18 INCH FILTREXX8 COMPOST 1. REGULAR INSPECTIONS OF COMPOST
y w w w y w w \ w w w w w "
NECESSARY APPLICATION OF LIME, FERTILIZER, AND SEED.
® 18 INCH FILTREXX ® COMPOST FILTER SOCK OR ENGINEER FILTER SOCKS SHALL BE CONDUCTED
w w Y \\ y y y y
FILTER SOCK OR ENGINEER
APPROVED EQUIVALENT. ONCE EVERY CALENDAR WEEK AND,
w w w y w w w
y y \ y
3. BEGIN AT THE TOP OF THE SLOPE BY ANCHORING THE TEMPORARY
WORK AREA APPROVED EQUIVALENT
2. HARD WOODEN STAKES SHALL BE AS RECOMMENDED, WITHIN
w w y
FOR SIDE SEAM ABUTMENT w w w \ \
MATTING IN A 6 -INCH DEEP X 6 -INCH WIDE TRENCH WITH APPROXIMATELY
INSTALLED THROUGH THE MIDDLE OF 24 -HOURS AFTER EACH RAINFALL
EVENT THAT PRODUCES 1/2 -INCH OR
w w w w y w w w
Y w w w w w w w
12 -INCH OF TEMPORARY MATTING EXTENDED BEYOND THE UP-SLOPE
PORTION OF THE TRENCH. ANCHOR THE TEMPORARY MATTING WITH A
9751 SOUTHERN PINE BLVD
CHARLOTTE, 28273
THE COMPOST FILTER SOCK. SPACE
WATER FLOW A A
STAKES EVERY 10 LINEAR FEET. DRIVE MORE OF PRECIPITATION.
w w \ w w w w w w
y y \ w w w w w w
ROW OF STAPLES/STAKES AS PER THE MANUFACTURERS SPECIFICATIONS.
[phone]
72
THE STAKE TO A MINIMUM OF 2. MAKE ANY NECESSARY REPAIRS
y y y w w w w w
BACKFILL THE TRENCH AFTER STAPLING. APPLY SEED TO SURFACE AND
1 -FOOT INTO THE GROUND LEAVING IMMEDIATELY.
w w w w w w w
FOLD REMAINING 12 -INCH PORTION OF TEMPORARY MATTING BACK OVER
ENGINEERING FIRM
®
A MINIMUM OF 3 -INCH PROTRUDING
w / w w w w w
w w w
SEED AND COMPACTED SOIL. SECURE TEMPORARY MATTING OVER
LICENSE NUMBER: F-0176
ABOVE THE COMPOST FILTER SOCK. 3. REMOVE ACCUMULATED SEDIMENT
OVERY2 THE HEIGHT OF THE
y w COMPACTED SOIL WITH A ROW OF STAPLES/STAKES SPACED PER THE
v
MANUFACTURERS SPECIFICATIONS -
3. WHEN MULTIPLE COMPOST FILTER COMPOST FILTER SOCK AND ANY
w y w w w w w>11=
SOCKS ARE USED, INSTALL MINIMUM DEBRIS. THE COMPOST SOCK MUST
y w y w y w y w w TOP OF SLOPE
4. ROLL THE TEMPORARY MATTING DOWN OR HORIZONTALLY ACROSS THE
PLAN -VIEW
OF 18 -INCH OVERLAP. WHEN BE REPLACED IF CLOGGED OR TORN.
w w w w w w w w
SLOPE. TEMPORARY MATTING WILL UNROLL WITH APPROPRIATE SIDE
INSTALLING, USE 2 -INCH BY 2 -INCH 4
IF PONDING BECOMES EXCESSIVE,
v. w w w w w w w w w w w w wice
AGAINST THE SOIL SURFACE. ALL TEMPORARY MATTING MUST BE
W
BY 3 -FOOT WOODEN STAKES TO .
HOLD COMPOST FILTER SOCKS IN THE SOCK MAY NEED TO BESECURELY
FASTENED TO SOIL SURFACE BY PLACING STAPLES/STAKES IN
REPLACED WITH A LARGER DIAMETER
'
APPROPRIATE LOCATIONS AS PER THE MANUFACTURERS SPECIFICATIONS.
uj
2 -INCH X 2 -INCH X 36 -INCH
PLACE.
OR A DIFFERENT MEASURE. THE SOCK
w w w w w w w
HARD WOODEN STAKE
4. TO PREVENT WATER & SEDIMENT NEEDS TO BE REINSTALLED IF
y w y y w
5. THE EDGES OF PARALLEL TEMPORARY MATTING MUST BE STAPLED WITH A
(SEE NOTE 2)
®COMPOST
FROM FLOWING AROUND MEASURES UNDERMINED OR DISLODGED.
w w w / w J w w
w w w w w
MINIMUM 4 -INCH OVERLAP.
uj
Q
18 INCH FILTREXX
A MINIMUM 10 -FOOT LENGTH OF
*THE
w w w w w
FILTER SOCK OR ENGINEER
COMPOST FILTER SOCK MUST BE S. COMPOST SOCK SHALL BE
FOR END ROLL
w w w w w W w w
/
6. CONSECUTIVE TEMPORARY MATTING SPLICED DOWN THE SLOPE MUST BE
APPROVED EQUIVALENT WOOD MULCH OR COMPOST
PLACED UPSLOPE AT A 30 DEGREE INSPECTED UNTIL LAND
w w w y \ y w w w w OVERLAP, 4 -INCHES
PLACED END OVER END (SHINGLE STYLE) WITH A MINIMUM 4 -INCH
TO %Z HEIGHT OF COMPOST
ANGLE FROM THE ENDS OF THE DISTURBANCE IS COMPLETE AND THE
v w w w w w w w
/
OVERLAP. STAPLE THROUGH OVERLAPPED AREA PER THE MANUFACTURERSIr
I
FILTER SOCK (WORK AREA SIDE)
MEASURES. AREA ABOVE THE MEASURE HAS BEEN
w w w w w\ v w w w w w w w w
SPECIFICATIONS.
PERMANENTLY STABILIZED.
12 -INCH III=III=III=I I I=
I=I I=I I=1
5. SEDIMENT CONTROL SHOULD BE 6. SHOULD THE SILT FENCE ADJACENT
7. IN LOOSE SOIL CONDITIONS, THE USE OF STAPLE OR STAKE LENGTHS
-i 11 I I=I
III -III -I I I -I I
INSTALLED PARALLEL TO THE BASE OF
TO THE OUTLET COLLAPSE, TEAR, OR
w w w w y w OVERLAP SIDE SEAM 4 -INCHES
w w w w w
\
GREATER THAN 6 -INCH MAY BE NECESSARY TO PROPERLY SECURE THE
--I II=III=III=111
THE SLOPE OR OTHER DISTURBED
BECOME INEFFECTIVE, REPAIR OR
w w w w w w w
TEMPORARY MATTING.
-III I I1=III=III=1I1=1I I-
AREA. IN CHALLENGING
r w w w
CONDITIONS (I.E., 2:1 SLOPES), A REPLACE IT PROMPTLY.
W
w w w w
SECOND SEDIMENT CONTROL SHALL 7. REMOVE ALL COMPOST FILTER SOCK
BLANKET TO EXTEND A w w w w
*TEMPORARY MATTING MAINTENANCE NOTES:
SECTION A -A'
BE CONSTRUCTED AT THE TOP OF MATERIALS AND UNSTABLE
MINIMUM OF 3 FOOT - w w w w w w
w y y w w y y w
1. INSPECT TEMPORARY MATTING AT LEAST WEEKLY AND AFTER EACH
THE SLOPE. SEDIMENT DEPOSITS AND BRING THE
BEYOND TOE OF SLOPE. w w w w w w w w
RAINFALL EVENT THAT EXCEEDS 0.5 INCHES WITHIN A 24 HOUR PERIOD.
18 INCH FILTREXX ® COMPOST 2 -INCH X 2 -INCH X 36 -INCH HARD
6. LOOSE COMPOST MAY BE AREA TO GRADE AND STABILIZE IT
FOR BOTTOM OF SLOPE
TERMINATION w w w w www w www w
2. GOOD CONTACT WITH THE GROUND MUST BE MAINTAINED, AND EROSION
FILTER SOCK OR ENGINEER WOODEN STAKE PLACED 10' ON CENTER
BACKFILLED ALONG THE UPSLOPE AFTER THE CONTRIBUTING DRAINAGE
w
MUST NOT OCCUR BENEATH THE TEMPORARY MATTING.
APPROVED EQUIVALENT (SEE NOTE 2)
SIDE OF THE SEDIMENT CONTROL, AREA HAS BEEN PROPERLY
w
FILLING THE SEAM BETWEEN THE SOIL STABILIZED.
3. ANY AREAS OF THE TEMPORARY MATTING THAT ARE DAMAGED OR NOT IN
SURFACE AND DEVICE, IMPROVING
CLOSE CONTACT WITH THE GROUND SHALL BE REPAIRED AND STAPLED.
FILTRATION AND SEDIMENT COMPOST MATERIAL
®
RETENTION. DISPOSAL/RECYCLING NOTE:
4. IF EROSION OCCURS DUE TO POORLY CONTROLLED DRAINAGE, THE
PROBLEM SHALL BE FIXED AND THE ERODED AREA PROTECTED.
REFER TO DRAWING 2 FOR COMPOST
MIN. 18" OVERLAP
MATERIAL REQUIREMENTS AND
S. MONITOR AND REPAIR THE TEMPORARY MATTING AS NECESSARY UNTIL
DISPOSAL/RECYCLING HANDLING.
GROUND COVER IS ESTABLISHED.
*REF: NCDENR EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN
CONNECTION DETAIL
MANUAL, CHAPTERS 6 AND 8 REVISED, MAY 2013
8 COMPOST FILTER SOCK
9 MATTING SLOPES
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11 SCALE: N.T.S
11 : N.T.Sa
x
V
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Z
PUMP
AROUND STREAM CROSSING NOTES:
S:
1.
REFER TO AUTHORIZED PERMITS FOR ADDITIONAL LOCAL, STATE, AND FEDERAL REQUIREMENTS.
2.
CONSTRUCT TEMPORARY COFFER DAMS WITHIN EDGES OF CONSTRUCTION EASEMENT.
o
CONSTRUCT DAMS USING SANDBAGS COVERED WITH CLEAN 20 MIL HDPE LINER OR CLEAN STEEL
PLATE DRIVEN INTO THE STREAM BANKS AND STREAM BED. USE SANDBAGS TO SHORE STEEL
PLATE IF NEEDED. CONTRACTOR MAY USE OTHER MATERIALS FOLLOWING APPROVAL FROM THE
ENVIRONMENTAL INSPECTOR AND THE OWNER.
3.
THE HEIGHT OF THE COFFER DAM SHALL BE CALCULATED USING BOTH OF THE FOLLOWING
METHODS.
•
H/4 + 1'(H = HEIGHT OF STREAM BANK IN FEET) WITH A 2 -FEET MINIMUM DAM HEIGHT
, rin O
BASE FLOW + 1' (BASE FLOW TO BE IDENTIFIED IN THE FIELD PRIOR TO CONSTRUCTION)
I O
THE GREATER OF THE TWO RESULTING HEIGHTS SHALL BE USED FOR THE COFFER DAM.
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ADDITIONAL HEIGHT MAY BE REQUIRED BASED ON FLOW CONDITIONS AT THE TIME OF
o
CONSTRUCTION.
TOP OF BANK
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5.
CONTRACTOR SHALL DEWATER AREA BETWEEN DAMS AND ENSURE TIGHT SEAL OF DAMS PRIOR
Z
TO CONSTRUCTION. CONTRACTOR SHALL BE RESPONSIBLE FOR PASSING ALL WATER WHICH IS TO
a
SANDBAGS
BE FILTERED THROUGH A SILT BAG PLACED ON AN APPROPRIATE E&SC MEASURE. INSTALL
3' MIN. 12" MIN.
z
12 -INCH COMPOST FILTER SOCK ON THREE DOWNGRADIENT SIDES OF SILT BAG.
30 MIL HDPE LINER
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COFFER
DAM 6.
THE PIPE(S) SHALL BE OF SUFFICIENT SIZE TO CONVEY NORMAL STREAM FLOW. LIMIT THE
Q
REMOVAL OF VEGETATION TO THE CONSTRUCTION EASEMENT AREA. ONLY HAND CLEARING IS
N
ALLOWED ON STREAM BANKS AND WITHIN 10 -FEET OF TOP OF BANK.
24" MIN.
-'
18" DIA. HDPE
24" MIN.
Q
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7.
BEGIN INSTREAM WORK IN THE MORNING, INSTALLATION AND RESTORATION SHALL OCCUR
FLOW
SMOOTH LINED PIPE
WITHIN A 24-HOUR PERIOD TO THE FULLEST EXTENT PRACTICAL. IN NO INSTANCE SHOULD
Ir
1
w
(N-12 OR ENGINEER
INSTALLATION AND RESTORATION EXCEED 48 HOURS WITHOUT APPROVAL OF THE
0
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APPROVED
ENVIRONMENTAL MONITOR.
SECTION A -A'
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EQUIVALENT)
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8.
CONTRACTOR SHALL ATTEMPT TO SEGREGATE STREAM BED SUBSTRATE FROM SUBGRADE.W
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9.
NO WASTES, SPOILS, SOLIDS OR FILLS WILL BE PLACED WITHIN STREAMS, WETLANDS OR RIPARIAN
ll(Q
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AREAS BEYOND THE LIMITS OF THOSE DEPICTED ON THE DRAWINGS.
GENERAL NOTES:
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10.
ALL STREAMS SHALL BE RESTORED TO ORIGINAL CONTOURS TO FULLEST EXTENT PRACTICAL,
w
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ONCE CONSTRUCTION IS COMPLETED. AFTER SUBGRADE HAS BEEN BACKFILLED APPLY STREAM
1. CONSTRUCT COFFER DAMS PRIOR TO TOE DRAIN CLEAN OUT.
L
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I
SUBSTRATE, TO THE FULLEST EXTENT PRACTICAL.
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2. CONSTRUCT DAM USING SANDBAGS COVERED WITH 30 MIL HDPE LINER. ADDITIONAL COFFER DAMS MAY BE USED IF NECESSARY.
0
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STREAM 11.
IF CONSTRUCTION ACTIVITIES REQUIRE EQUIPMENT TO CROSS THE STREAM, TEMPORARY
FLOW
BRIDGING WILL BE USED.
3. THE HEIGHT OF THE COFFER DAM SHALL BE A MINIMUM OF 2 FEET WITH A MINIMUM OF 12 INCHES TO THE TOP OF BANK. ADDITIONAL HEIGHT MAY BE REQUIRED
W
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12.
ADDITIONAL SITE SPECIFIC MEASURES MAY BE NECESSARY IN ORDER TO PROTECT AFFECTED
BASED ON FLOW CONDITIONS AT THE TIME OF CONSTRUCTION.
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DURING CONSTRUCTION
STREAMS AND PREVENT VIOLATIONS OF WATER QUALITY STANDARDS.
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TYPICAL PIPE THROUGH COFFER DAM
13.
ENVIRONMENTAL INSPECTOR TO ASSIST IN DETERMINATION OF WHETHER PUMP AROUND
4. CONTRACTOR SHALL ENSURE BYPASS PIPING FUNCTIONALITY AND ENSURE TIGHT SEAL OF SANDBAG COFFER DAM.
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OR FLUME STREAM CROSSING METHOD IS TO BE USED.
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5. SAND BAGS SHOULD BE PLACED ALONG THE EDGES OF THE COFFER DAM TO KEEP WATER FROM CUTTING AROUND THE COFFER DAM.
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10 COFFERDAM AND BYPASS PIPE
11 SAND BAG COFFERDAM
PROJECT NUMBER
11 SCALE: N.T.S
11 SCALE: N.T.S
7235-18-014
DRAWING NUMBER
11
11