SWG010034_Plansheet - Misc. Detail_20211208

DocuSign Envelope ID: 64851B58-COD141`12-ABD4-C1E9659860FE
2-3• COURSE-/
AGGREGATE
EXISTING
SLOPE FOR VEHICULAR TRAFFIC
PAVEMENT
EDGE
MAINTAIN BERM & VALLEY
TO PREVENT SEDIMENT LADEN
WATER FROM LEAVING SITE
12"
10"
24" 6" MIN.
FILTER FABRIC
TEMPORARY CONSTRUCTION ENTRANCE
(NOT TO SCALE)
DESIGN CRITERIA
AGGREGATE SIZE - USE 2-3 INCH WASHED STONE.
DIMENSIONS OF GRAVEL PAD:
THICKNESS: 6 INCHES MINIMUM
WIDTH: 12-FEET MINIMUM OR FULL WIDTH AT ALL POINTS OF
THE VEHICULAR ENTRANCE AND EXIT
AREA, WHICHEVER IF GREATER
LENGTH: 50-FEET MINIMUM
LOCATION - LOCATE CONSTRUCTION ENTRANCES AND EXITS TO LIMIT
SEDIMENT FROM LEAVING THE SITE AND TO PROVIDE FOR MAXIMUM
UTILITY BY ALL CONSTRUCTION VEHICLES. AVOID STEEP GRADES,
AND ENTRANCES AT CURVES IN PUBLIC ROADS.
WASHING - IF CONDITIONS AT THE SITE ARE SUCH THAT MOST OF THE
MUD AND SEDIMENT ARE NOT REMOVED BY VEHICLES TRAVELING
OVER THE GRAVEL, THE TIRES SHOULD BE WASHED. WASHING
SHOULD BE DONE ON AN AREA STABILIZED WITH CRUSHED STONE
THAT DRAINS INTO A SEDIMENT TRAP OR OTHER SUITABLE DISPOSAL
AREA. A WASH RACK MAY ALSO BE USED TO MAKE WASHING MORE
CONVENIENT AND EFFECTIVE.
CONSTRUCTION SPECIFICATIONS
1. CLEAR THE ENTRANCE AND EXIT AREA OF ALL VEGETATION,
ROOTS, AND OTHER OBJECTIONABLE MATERIAL AND PROPERLY
GRADE IT.
2. PLACE THE GRAVEL TO THE SPECIFIC GRADE AND DIMENSIONS
SHOWN ON THE PLANS, AND SMOOTH IT.
3. PROVIDE DRAINAGE TO CARRY WATER TO SEDIMENT TRAP OR
OTHER SUITABLE OUTLET.
4. USE GEOTEXTILE FABRICS BECAUSE THEY IMPROVE STABILITY
OF THE FOUNDATION IN LOCATIONS SUBJECT TO SEEPAGE OR HIGH
WATER TABLE.
MAINTENANCE
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. AFTER EACH
RAINFALL, INSPECT ANY STRUCUTRE USED TO TRAP SEDIMENT AND
CLEAN IT OUT AS NECESSARY. IMMEDIATELY REMOVE ALL
OBJECTIONABLE MATERIALS SPILLED, WASHED, OR TRACKED ONTO
PUBLIC ROADWAYS.
_ STORM PIPE
---------
CONSTRUCTION SPECIFICATIONS
PLACE RIPRAP SO THAT IT FORMS A DENSE,
BEGIN FILTER FABRIC
WELL -GRADED MASS OF STONE WITH A MINIMUM OF
® END OF PIPE/FES I'^
VOIDS. THE DESIRED DISTRIBUTION OF STONES
RIP RAP APRON
THROUGHOUT THE MASS MAY BE OBTAINED BY
THICKNESS AS CONTINUE FILTER FABRIC
SELECTIVE LOADING AT THE QUARRY, AND
PER PLAN BEYOND RIP RAP APRON
CONTROLLED DUMPING DURING FINAL PLACEMENT.
RIP RAP GRAVEL
PLACE RIPRAP TO ITS FULL THICKNESS IN ONE
SIZED & PLACED
OPERATION. DO NOT PLACE RIPRAP BY DUMPING
AS PER PLAN
THROUGH CHUTES OR OTHER METHODS THAT
F.ES
CAUSE SEGREGATION OF STONE SIZES. TAKE CARE
NOT TO DISLODGE THE UNDERLYING BASE OR
FILTER WHEN PLACING STONES.
STORM PIPE
W2
MAINTENANCE
RIPRAP SHOULD BE INSPECTED PERIODICALLY AND
AFTER HEAVY RAINFALLS FOR SCOUR OR
W1
(3*Do)
DISLODGED STONES. CONTROL OF WEED AND
BRUSH GROWTH MAY BE NEEDED IN SOME
La
LOCATIONS. IMMEDIATELY MAKE ALL NEEDED
(Apron Length)
REPAIRS TO PREVENT FURTHER DAMAGE.
RIP RAP APRON STABILIZATION DETAIL
(NOT TO SCALE)
Class B RiprapT_
?�
2' ntax. at
center
Filter Cloth
4' to 6'
Cross -Section View
CHECK DAM WITH WEIR
(NOT TO SCALE)
4'
SHOULDER
0.08
0.02
Ka7►F��:i46j�ra7►
1.PLACE STRUCTURAL STONE (CLASS B) TO THE LINES AND DIMENSIONS SHOWN ON
THE PLAN ON A FILTER FABRIC FOUNDATION. THE CREST WIDTH OF THE DAM
SHOULD BE A MINIMUM OF 2 FEET.
2.KEEP THE CENTER STONE SECTION AT LEAST 9 INCHES BELOW THE END WHERE
THE DAM ABUTS THE CHANNEL BANKS.
3.PLACE SEDIMENT CONTROL STONE (#5 OR #57) ON THE UPSTREAM SIDE OF THE
DAM THAT IS A MINIMUM OF 1 FOOT THICK.
4.PROVIDE AN APRON THAT IS 3 TIMES THE HEIGHT OF THE DAM. THE APRON WIDTH
IS AT LEAST 4 FEET LONG. UNDERCUT THE APRON SO THAT THE TOP OF THE
APRON IS FLUSH WITH THE SURROUNDING GRADE.
&EXTEND THE STONE AT LEAST 1.5 FEET BEYOND THE DITCH BANK TO KEEP WATER
FROM CUTTING AROUND THE ENDS OF THE CHECK DAM.
6.EXCAVATE SEDIMENT STORAGE AREA TO THE DIMENSIONS SHOWN ON THE PLAN.
MAINTENANCE
INSPECT CHECK DAMS AND CHANNELS AT LEAST WEEKLY AND AFTER EACH
SIGNIFICANT (2 INCH OR GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY.
CLEAN OUT SEDIMENT, STRAW, LIMBS, OR OTHER DEBRIS THAT COULD CLOG THE
CHANNEL WHEN NEEDED.
ANTICIPATE SUBMERGENCE AND DEPOSITION ABOVE THE CHECK DAM AND EROSION
FROM HIGH FLOWS AROUND THE EDGES OF THE DAM. CORRECT ALL DAMAGE
IMMEDIATELY. IF SIGNIFICANT EROSION OCCURS BETWEEN DAMS, ADDITIONAL
MEASURES CAN BE TAKEN SUCH AS, INSTALLING A PROTECTIVE RIPRAP LINER IN
THAT PORTION OF THE CHANNEL.
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. ADD STONES TO DAM AS NEEDED TO MAINTAIN DESIGN HEIGHT AND
CROSS SECTION.
50'
RIGHT OF WAY
20'
PAVEMENT
0.02
4' 5'
SHOULDER DITCH
DI TCH
0.08
L2" S-9.5 B Superpave Asphalt Mix (opt'onal)
8" ABC, Type B
NO TE.•
SHOULDER WIDTH BETWEEN 4' AND 6' SHALL
BE APPROVED BY THE DISTRICT ENGINEER
CONSIDERING ADJACENT LAND CHARACTERISTICS.
RESIDENTIAL LOCAL ROAD
CROSS SECTION DETAIL
WITH 50' R/W
NTS
6"
Praca" Sr &"* and S*Wwasms
B' max. standard atren h fabric with wire fence
& max. extra sfrang ric wit out We fence
s�
last
Plastic or
wire tiro
se
fWM IB-24 r/
Natural
ground
4 Filter
fobric
Wi f
a�ewn,an
steel f Bochfill trench Natural
Poet@'�y ground
' min
24• '. f
mure ma I Ikrtion d" of s eeNmetdfanoa.
P_ GAN G62S
SILT FENCE DETAIL
(NOT TO SCALE)
CONSTRUCTION
1. CONSTRUCT THE SEDIMENT BARRIER OF STANDARD STRENGTH OR EXTRA
STRENGTH SYNTHETIC FILTER FABRICS
2 ENSURE THAT THE HEIGHT OF THE SEDIMENT FENCE DOES NOT EXCEED 24 INCHES ABOVE THE
GROUND SURFACE. (HIGHER FENCES MAY IMPOUND
VOLUMES OF WATER SUFFICIENT TO CAUSE FAILURE OF THE STRUCTURE.)
J. CONSTRUCT THE FILTER FABRIC FROM A CON77N000S ROLL CUT TO THE LENGTH OF THE BARRIER
TO AVOID JOINTS. WHEN JOINTS ARE NECESSARY, SECURELY FASTEN THE FILTER CL07H ONLY AT A
SUPPORT POST Wl7H 4 FEET MINIMUM OVERLAP TO 7HE NEXT POST.
4. SUPPORT STANDARD STRENGTH FILTER FABRIC BY WIRE MESH FASTENED SECURELY TO 7HE
UPSLOPE SIDE OF 7HE POSTS EXTEND 7HE WIRE MESH SUPPORT TO 7HT BOTTOM OF THE TRENCH.
FASTEN 7HE WIRE REINFORCEMENT, 7HEN FABRIC ON THE UPSLOPE SIDE OF THE FENCE POST. WIRE
OR PLASTIC ZIP TIES SHOULD HAVE MINIMUM 50 POUND TENSILE STRENGTH.
5. WHEN A WIRE MESH SUPPORT FENCE IS USED, SPACE POSTS A MAXIMUM OF 8 FEET APART.
SUPPORT POSTS SHOULD BE DRIVEN SECURELY INTO 7HE GROUND A MINIMUM OF 24 INCHES
6. EXTRA STRENGTH FILTER FABRIC Wl7H 6 FEET POST SPACING DOE NOT REQUIRE WIRE MESH
SUPPORT FENCE. SECURELY FASTEN 7HE FILTER FABRIC DIREC7L Y TO POSTS WIRE OR PLAS77C
ZIP 77ES SHOULD HAVE MINIMUM 50 POUND TENSILE STRENGTH.
7. EXCA VA 7E A TRENCH APPROXIMA TEL Y 4 INCHES WIDE AND 8 INCHES DEEP ALONG 7HE PROPOSED
LINE OF POSTS AND UPSLOPE FROM 7HE BARRIER (FIGURE 6.62a).
8. PLACE 12 INCHES OF 7HE FABRIC ALONG THE BOTTOM AND SIDE OF THE TRENCH.
9. BACKFILL 7HE TRENCH WI7H SOIL PLACED OVER 7HE FILTER FABRIC AND COMPACT. 7HOROUGH
COMPACTION OF THE BACKFILL IS CRITICAL TO SILT FENCE PERFORMANCE.
10. DO NOT ATTACH FILTER FABRIC TO EXIS77NG TREES.
11. NO MEASURES ARE TO BE REMOVED UN77L DENR APPROVAL.
INSTALLA77ON SPECIFICA77ONS
1. 7HE BASE OF BOTH END POSTS SHOULD BE AT LEAST ONE FOOT HIGHER 7HAN 7HE MIDDLE OF
7HE FENCE. CHECK WITH A LEVEL IF NECESSARY.
2. INSTALL POSTS 4 FEET APART IN CRI77CAL AREAS AND 6 FEET APART ON STANDARD
APPLICA TONS.
J. INSTALL POSTS 2 FEET DEEP ON 7HE DOWNS7REAM SIDE OF 7HE SILT FENCE, AND AS CLOSE AS
POSSIBLE TO 7HE FABRIC, ENABLING POSTS TO SUPPORT THE FABRIC FROM UPSTREAM WATER
PRESSURE.
4. INSTALL POSTS Wl7H THE NIPPLES FACING AWAY FROM THE SILT FABRIC.
5. ATTACH 7HE FABRIC TO EACH POST Wl7H THREE TIES, ALL SPACED Wl7HIN THE TOP 8 INCHES
OF FABRIC. ATTACH EACH TIE DIAGONALLY 45 DEGREES THROUGH THE FABRIC WITH EACH
PUNCTURE AT LEAST 1 INCH VER77CALLY APART. ALSO, EACH 77E SHOULD BE POSITIONED TO HANG
ON A POST NIPPLE WHEN TIGHTENED TO PREVENT SAGGING.
6. WRAP APPROXIMATELY 6 INCHES OF FABRIC AROUND 7HE END POSTS AND SECURE Wl7H 3 77ES
7. NO MORE 7HAN 24 INCHES OF A 36 INCH FABRIC IS ALLOWED ABOVE GROUND LEVEL.
8. 7HE INSTALLA77ON SHOULD BE CHECKED AND CORRECTED FOR ANY DEWA77ONS BEFORE
COMPACTION.
9. COMPAC7ON IS VITALLY IMPORTANT FOR EFFEC77VE RESULTS COMPACT 7HE SOIL IMMEDIATELY
NEXT TO 7HE SILT FENCE FABRIC Wl7H THE FRONT WHEEL OF 7HE TRACTOR, SKID STEER, OR
ROLLER EXER77NG AT LEASY 60 POUNDS PER SQUARE INCH. COMPACT 7HE UPSTREAM SIDE FIRST,
AND THEN EACH SIDE TWICE FOR A TOTAL OF 4 TRIPS
MAINTENANCE
INSPECT SEDIMENT FENCES AT LEAST ONCE A WEEK AND AFTER EACH RAINFALL. MAKE ANY
REQUIRED REPAIRS IMMEDIATELY.
SHOULD 7HE FABRIC OF A SEDIMENT FENCE COLLAPSE, TEAR, DECOMPOSE, OR BECOME INEFFEC77VE,
REPLACE IT PROMPTLY.
REMOVE SEDIMENT DEPOSITS AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME FOR THE
NEXT RAIN AND TO REDUCE PRESSURE ON 7HE FENCE. TAKE CARE TO AVOID UNDERMINING 7HE
FENCE DURING CLEANOUT.
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.
k
Skimmer
Dewatering
Riprap t
r
Device
or Slope Drain
t
�
Wky
Earthen`
embankment
Emergency
with stabilized
side slopes
Spillway
Drape baffle material overwire strand and
secure with plastic ties at posts and on wire every 12"
9 Gauge Min.High aaaammmmaaaaa,-.'�
Tension Wire Strand TMIN
Shall Be Secured
To Post To Support
Baffle Material i I
Baffle Material
If the temporary sediment basin will be
converted to a permanent stormwater basin
of greater depth, the baffle height should be
based on the pool depth during use as a
temporary sediment basin,
Note: Install three (3) coir fiber baffles in basins
at drainage outlets with a spacing of 1 /4 the
basin length. Two (2) coir fiber baffles can be
Installed in the basins less than 20 ft. in length
with a spacing of 1/3 the basin length.
POROUS BAFFLES DETAIL
(NOT TO SCALE)
Baffles
4' Max.
Compacted soil 2 `
�-� min >�
I I( II11-
-411-1.--- 6' typical
Figure 6.20a Temporary earthen diversion dike.
CONSTRUCTION SPECIFICATIONS
1. REMOVE AND PROPERLY DISPOSE OF ALL TREES, BRUSH, STUMPS, AND OTHER
OBJECTIONAL MATERIAL.
2. ENSURE THAT THE MINIMUM CONSYRUCTED CROSS SECTION MEETS ALL DESIGN
REQUIREMENTS.
3. ENSURE THAT THE TOP OF THE DIKE IS NOT LOWER AT ANY POINT THAN THE
DESIGN ELEVATION PLUS THE SPECIFIED SETTLEMENT.
4. PROVIDE SUFFICIENT ROOM AROUND DIVERSIONS TO PERMIT MACHINE
REGRADING AND CLEANOUT.
5. VEGETATE THE RIDGE IMMEDIATELY AFTER CONSTRUCTION, UNLESS IT WILL
REMAIN IN PLACE LESS THAN 30 WORKING DAYS.
MAINTENANCE
INSPECT TEMPORARY DIVERSIONS ONCE A WEEK AND AFTER EVERY RAINFALL.
IMMEDIATELY REMOVE SEDIMENT FROM THE FLOW AREA AND REPAIR THE DIVERSION
RIDGE.
CHECK OUTLETS AND MAKE TIMELY REPAIRS AS NEEDED TO AVOID GULLY FORMATION.
WHEN THE AREA ABOE THE TEMPORARY DIVISERSION IS PERMANENTLY STABILIZED,
REMOVE THE DIVERSION AND FILL AND STABILIZED THE CHANNEL TO BLEND WITH THE
NATURAL SURFACE.
TEMPORARY DIVERSION DITCH
(NOT TO SCALE)
Arm Assembly
C Enclosure
Water Entry
PERSPECTIVE VIEW Unit
PVC End PVC Vent Schedule 40
Cap Elbow Yrps PVC PI
Wat
Suirface P.
PVC End r
7
Schedule 40
PVC Tee PVC Pipe PVC Pipe
}• Holes, in - PVC Tee Orifice
Vndamde Flexible Plate
�\
y e
Bottom Strfoce
END VIEW FRONT VIEW
Plan View
DW-
s nxtwe
�` F1oW
18" min 4...-r'"
6.20.1
0
• Dewatering-Allow the maximum reasonable detention pencidbefirm the
basin is completely dewatmW (at least 24 hours).
• Inflow cate-Redun, the inflow velocity and divert all sediment -bee
-ff.
Emergency
spllhm
Average _ Width W L
• Areo otbminaatwaurfacest
tep w prmdpal spllhay elevatiwt
r Freeboard Embankment
_
CONSTRUCTION SPECIFICATIONS
1. Grade the basin so that the bottom is level front to back and side to
side.
2. Install the coir fiber baffles immediately upon excavation of the basins.
Infla'ss,rac-hu'a \
icy
�
Extend 9 gauge wire to basin side or install T-postto anchor
J. Install posts across the width of the sediment trap (Practice 6.62,
baffle to side of basin and secure to vertical post
Sediment Fence).
storage". cross-saxthin
4. Steel posts should be driven to a depth of 24 inches and spaced a
view
�Jmaximum
of 4 feet apart. The to of the fabric should be a minimum of 6
P P
Flgane.64c Example ofssediment basnwhhaskknmeroudatand emergency splihNay FmmPennsylvanla
Erosion and sediment Pdmtlon Control Manual, March, 2000.
7 "I
inches higher than the invert of the spillway. Tops of baffles should be a
minimum of 2 inches lower than the top of the earthen embankment.
"
5. Install at least three rows of baffles between the inlet and outlet
6.64.6 ne.s6a
discharge point. Basins less than 20 feet in length may use 2 baffles.
Variable Depth
6. Attach a 9 gauge high tension ware strand to the steel posts at
height of 6 inches above the spillway elevation with plastic ties or wire
SKIMMER SEDIMENT BASIN
fasteners to prevent sagging. if the temporary sediment basin will be
converted to a permanent storm water basin of a greater depth, the baffle
Secure bottom ofbaffleto round Whit
g
height should be based on the pool depth during use as a temporary
basin. CONSTRUCTION SPECIFICATIONS
12"staples at 12" maximum spacing,
sediment
7. Extend 9 gauge minimum high tension wire strand to side of basin or
-'
instal/ steel T-posts to anchor baffle to side of basin and secure to 1. Clear,grub, and strip the area under the embankment of all vegetation and root mat.
9. Erosion control -Construct the structure so that the disturbed area is minimized. Divert
vertical end posts as shown in Figure 6.65b. Remove all surface soil containing high amounts of organic matter and stockpile or dispose of it
surface water away from the bare areas. Complete the embankment before the area is
i I
Steel Post
if T-0" Depth
Baffle Material should be secured to the bottom
and sides of basin using 12" landscape staples
8. Drape the coin fiber mat over the wire strand mounted at a height of 6
properly. Haul all objectionable material to the designated disposal area. Place temporary
cleared. Stabilize the emergency spillway embankment and all other disturbed areas
inches above the spillway elevation. Secure the coir fiber mat to the wire
sediment control measures below basin as needed.
above the crest of the principal spillway immediately after construction(References:
strand with plastic ties or wire fasteners. Anchor the matting to the sides
Surface Stabilization).
and floor of the basin with 12 inch wire staples, approximately 1 ft apart,
2. Ensure that fill material for the embankment is free of roots, woody vegetation, organic
along the bottom and side slopes of the basin.
matter, and other objectionable material. Place the fill in lifts not to exceed 9 inches, and
10. Install porous baffles as specified in Practice 6.65, Porous Baffles.
9. Do not splice the fabric, but use a continuous piece across the basin
machine compact it. Over fill the embankment 6 inches to allow for settlement.
10. Adjustments may be required in the stapling requirements to fit
11. After all the sediment -producing areas have been permanently stabilized, remove the
individual site conditions.
3. Shape the basin to the specified dimensions. Prevent the skimming device from settling
structure and all the unstable sediment. Smooth the area to blend with the adjoining
into the mud by excavating a shallow pit under the skimmer or providing a low support under
areas and stabilize properly. (References: Surface Stabilization).
the skimmer of stone or timber.
4. Place the barrel (typically 4-inch Schedule 40 PVC pipe) on a firm, smooth foundation of
MAINTENANCE
MAINTENANCE
impervious soil. Do not use pervious material such as sand, gravel, or crushed stone as backfill
around the pipe. Place the fill material around the pipe spillway in 4-inch layers and compact it
INSPECT SKIMMER SEDIMENT BASINS AT LEAST WEEKLY AND AFTER EACH
Inspect baffles at least once a week and after each rainfall. Make any
under and around the pipe to at least the same density as the adjacent embankment. Care
SIGNIFICANT (ONE-HALF INCH OR GREATER) RAINFALL EVENT AND REPAIR
required repairs immediately.
must be taken not to raise the pipe from the firm contact with its foundation when compacting
IMMEDIATELY. REMOVE SEDIMENT AND RESTORE THE BASIN TO ITS ORIGINAL
under the pipe haunches.
DIMENSIONS WHEN SEDIMENT ACCUMULATES TO ONE-HALF THE HEIGHT OF THE
Be sure to maintain access to the baffles. Should the fabric of a baffle
FIRST BAFFLE. PULL THE SKIMMER TO ONE SIDE SO THAT THE SEDIMENT
collapse, tear, decompose, or become ineffective, rep/ace it promptly.
Place a minimum depth of 2 feet of compacted backfill over the pipe spillway before
UNDERNEATH IT CAN BE EXCAVATED. EXCAVATE THE SEDIMENT FROM THE
crossing it with construction equipment. In no case should the pipe conduit be installed by
ENTIRE BASIN, NOT JUST AROUND THE SKIMMER OR THE FIRST CELL. MAKE SURE
Remove sediment deposits when it reaches half full, to provide adequate
cutting a trench through the dam after the embankment is complete.
VEGETATION GROWING IN THE BOTTOM OF THE BASIN DOES NOT HOLD DOWN THE
storage volume for the next rain and to reduce pressure on the baffles.
SKIMMER.
Take care to avoid damaging the baffles during c/eonout, and rep/ace if
5. Assemble the skimmer following the manufactures instructions, or as designed.
damaged during cleanout operations. Sediment depth should never exceed
REPAIR THE BAFFLES IF THEY ARE DAMAGED. RE -ANCHOR THE BAFFLES IF WATER
half the designed storage depth.
6. Lay the assembled skimmer on the bottom of the basin with the flexible joint at the inlet
IS FLOWING UNDERNEATH OR AROUND THEM.
of the barrel pipe. Attach the flexible joint to the barrel pipe and position the skimmer over the
p p p p
FIGURE 6.65b
After the contributingdrainage area has been properly stabilized, remove all
9 P P y
excavated pit or support. Be sure to attach a rope to the skimmer and anchor it to the side of
IF THE SKIMMER ARM OR BARREL PIPE IS CLOGGED, THE ORIFICE CAN BE
baffle materials and unstable sediment deposits, bring the area to grade,
the basin. This will be used to pull the skimmer to the side for maintenance.
REMOVED AND THE OBSTRUCTION CLEARED WITH A PLUMBER'S SNAKE OR BY
and stabilize it.
FLUSHING WITH WATER. BE SURE AND REPLACE THE ORIFICE BEFORE
7. Earthen spillways -Install the spillway in undisturbed soil to the greatest extent possible.
REPOSITIONING THE SKIMMER.
The achievement of planned elevations, grade, design width, and entrance and exit channel
slopes are critical to the successful operation of the spillway. The spillway should be lined with
CHECK THE FABRIC LINED SPILLWAY FOR DAMAGE AND MAKE ANY REQUIRED
laminated plastic or impermeable geotextile fabric. The fabric must be wide and long enough to
REPAIRS WITH FABRIC THAT SPANS THE FULL WIDTH OF THE SPILLWAY. CHECK
cover the bottom and sides and extend onto the top of the dam for anchoring in a trench. The
THE EMBANKMENT,SPILLWAYS, AND OUTLET FOR EROSION DAMAGE, AND INSPECT
50 Right-of-way
edges may be secured with 8-inch staples or pins. The fabric must be long enough to extend
THE EMBANKMENT FOR PIPING AND SETTLEMENT. MAKE ALL NECESSARY REPAIRS
down the slope and exit onto the stable ground. The width of the fabric must be one piece, not
IMMEDIATELY. REMOVE ALL TRASH AND OTHER DEBRIS FROM THE SKIMMER AND
joined or spliced; otherwise water can get under the fabric. If the length of the fabric is
POOL AREAS.
insufficient for the entire length of the spillway, multiple sections, spanning the complete width,
may be used. The upper section(s) should overlap the lower section(s) so that water cannot
FREEZING WEATHER CAN RESULT IN ICE FORMING IN THE BASIN. SOME SPECIAL
35' 6'
5' 4'
flow under the fabric. Secure the upper edge and side of the fabric in a trench with staples or
PRECAUTIONS SHOULD BE TAKEN IN THE WINTER TO PREVENT THE SKIMMER
pins. (Adapted froms i ing,stalling and Maintaining Skimmer Sediment
Manual for e
FROM PLUGGING WITH ICE.
Pavement
99 &
8. Inlets - Discharge water into the basin in a manner to prevent erosion. Use temporary
Slope As Required
slope drains or diversions with outlet protection to divert sediment -laden water to the upper end
�. �B
of the pool area to improve basin trap efficiency. (References: Runoff Control Measures and
Outlet Protection).
2" S-9.5 B Superpave Asphalt Mix (optional)
8" ABC, Type B
SECTION AA
TYPICAL CUL-DE-SAC
NO CURB & GUTTER
Not To Scale
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DocuSign Envelope ID: 64851B58-COD141`12-ABD4-C1E9659860FE
GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH THE Ill
CONSTRUCTION GENERAL PERMIT
Implementing the details and specifications on this Ian sheet will result in the construction activity being
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considered compliant with the Ground Stabilization and Materials Handling sections of the NCGO1 Construction
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General Permit (Sections E and F, respectively). The permittee shall comply with the Erosion and Sediment
Control plan approved by the delegated authority having jurisdiction. All details and specifications shown on this
sheet may not apply depending on site conditions and the delegated authority having jurisdiction.
SECTION E: GROUND STABILIZATION
Required Ground Stabilization
Timeframes
Stabilize within this
Site Area Description
many calendar days
Timeframe variations
after ceasing land
disturbance
(a) Perimeter dikes, swales,
ditches, and perimeter
7
None
slopes
(b) High Quality Water (HQ
) 7
None
Zones
If slopes are 10' or less in length and are
(c) Slopes steeper than 3:1
7
not steeper than 2:1,14 days are
allowed
-7 days for slopes greater than 50' in length and
with slopes steeper than 4:1
(d) Slopes 3:1 to 4:1
14
-7 days for perimeter dikes, swales, ditches,
perimeter slopes and HOW W Zones p Q
-10 days for Falls Lake Watershed
-7 days for perimeter dikes swales ditches,
(e) Areas with slopes flatter
perimeter slopes and H W Zones
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than 4:1
14
-10 days for Falls Lake Watershed unless there is zer
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slope
Note: After the permanent cessation of construction activities, any areas with temporary ground stabilization shall
be converted to permanent ground stabilization as soon as practicable but in no case longer than 90 calendar days
after the last land disturbing activity. Temporary ground stabilization shall be maintained in a manner to render
the surface stable against accelerated erosion until permanent ground stabilization is achieved.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the techniques in the table
below:
Temporary Stabilization
Permanent Stabilization
• Temporary grass seed covered with straw or
• Permanent grass seed covered with straw or
other mulches and tackifiers
other mulches and tackifiers
• Hydroseeding
• Geotextile fabrics such as permanent soil
• Rolled erosion control products with or
reinforcement matting
without temporary grass seed
• Hydroseeding
• Appropriately applied straw or other mulch
• Shrubs or other permanent plantings covered
• Plastic sheeting
with mulch
• Uniform and evenly distributed ground cover
sufficient to restrain erosion
• Structural methods such as concrete, asphalt or
retaining walls
• Rolled erosion control products with grass seed
POLYACRYLAMIDES (PAMS) AND FLOCCULANTS
1. Select flocculants that are appropriate for the soils being exposed during construction, selecting from the
NC DWR List of Approved PAMS/Flocculants.
2. Apply flocculants at or before the inlets to Erosion and Sediment Control Measures.
3. Apply flocculants at the concentrations specified in the NC DWR List of Approved PAMS/Flocculants and in
accordance with the manufacturer's instructions.
4. Provide ponding area for containment of treated Stormwater before discharging offsite.
5. Store flocculants in leak -proof containers that are kept under storm -resistant cover or surrounded by
secondary containment structures.
EQUIPMENT AND VEHICLE MAINTENANCE
1. Maintain vehicles and equipment to prevent discharge of fluids.
2. Provide drip pans an ans under stored equipment.
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3. Identify leaks and repair as soon as feasible, or remove leaking equipment from the project.
4. Collect all spent fluids, store in separate containers and properly dispose as hazardous waste (recycle
when possible).
5. Remove leaking vehicles and construction equipment from service until the problem has been corrected.
6. Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products to a recycling or
disposal center that handles these materials.
LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
1. Never bury or burn waste. Place litter and debris in approved waste containers.
2. Provide a sufficient number and size of waste containers (e.g dumpster, trash receptacle) on site to
contain construction and domestic wastes.
3. Locate waste containers at least 50 feet away from storm drain inlets and surface waters unless no other
alternatives are reasonably available.
4. Locate waste containers on areas that do not receive substantial amounts of runoff from upland areas and
does not drain directly to a storm drain, stream or wetland.
5. Cover waste containers at the end of each workday and before storm events or provide secondary
containment. Repair or replace damaged waste containers.
6. Anchor all lightweight items in waste containers during times of high winds.
7. Empty waste containers as needed to prevent overflow. Clean up immediately if containers overflow.
8. Dispose waste off -site at an approved disposal facility.
9. On business days, clean up p g and dispose of waste in designated waste containers.
PAINT AND OTHER LIQUID WASTE
1. Do not dumppaint and other liquid waste into storm drains streams or wetlands.
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2. Locate paint washouts at least 50 feet away from storm drain inlets and surface waters unless no other
alternatives are reasonably available.
3. Contain liquid wastes in a controlled area.
4. Containment must be labeled, sized and placed appropriately for the needs of site.
5. Prevent the discharge of soaps, solvents, detergents and other liquid wastes from construction sites.
PORTABLE TOILETS
1. Install portable toilets on level round at least 50 feet away from storm drains streams or wetlands unless
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there is no alternative reasonablyavailable. If 50 foot offset is not attainable provide relocation of
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portable toilet behind silt fence or lace on a ravel ad and surround with sand bags.
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2. Provide staking or anchoring of portable toilets during periods of high winds or in high foot traffic areas.
3. Monitor portable toilets for leaking and properly dispose of any leaked material. Utilize a licensed sanitary
waste hauler to remove leaking portable toilets and replace with properly operating unit.
EARTHEN STOCKPILE MANAGEMENT
1. Show stockpile locations on plans. Locate earthen -material stockpile areas at least 50 feet away from
storm drain inlets, sediment basins, perimeter sediment controls and surface waters unless it can be
shown no other alternatives are reasonably available.
2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of five feet from the toe
of stockpile.
3. Provide stable stone access point when feasible.
4. Stabilize stockpile within the timeframes provided on this sheet and in accordance with the approved plan
and any additional requirements. Soil stabilization is defined as vegetative, physical or chemical coverage
techniques that will restrain accelerated erosion on disturbed soils for temporary or permanent control
needs.
ONSITE CONCRETE WASHOUT
STRUCTURE MATH LINER
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BELOW GRADE WASHOUT STRUCTURE ABOVE GRADE WALL STRUCTURE
NOf A !ME
CONCRETE WASHOUTS
1. Do not discharge concrete or cement slurry from the site.
2. Dispose of, or recycle settled, hardened concrete residue in accordance with local and state solid waste
regulations and at an approved facility.
3. Manage washout from mortar mixers in accordance with the above item and in addition lace the mixer
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and associated materials on impervious barrier and within lot perimeter silt fence.
4. Install temporary concrete washouts per local requirements, where applicable. If an alternate method or
product is to be used, contact your approval authority for review and approval. If local standard details
are not available use one of the two types of temporary concrete washouts provided on this detail.
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5. Do not use concrete washouts for dewatering or storing defective curb or sidewalk sections. Stormwater
accumulated within the washout may not be pumped into or discharged to the storm drain system or
receiving surface waters. Liquid waste must be pumped out and removed from project.
6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it can be shown that
no other alternatives are reasonably available. At a minimum, install protection of storm drain inlet(s)
closest to the washout which could receive spills or overflow.
7. Locate washouts in an easily accessible area, on level ground and install a stone entrance pad in front of
the washout. Additional controls may be required by the approving authority.
8. Install at least one sign directing concrete trucks to the washout within the project limits. Post signage on
the washout itself to identify this location.
9. Remove leavings from the washout when at approximately 75% capacity to limit overflow events.
Replace the tarp, sand bags or other temporary structural components when no longer functional. When
utilizing alternative or proprietary products, follow manufacturer's instructions.
10. At the completion of the concrete work remove remaining leavings and dispose of in an approved
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disposal facility. Fill pit, if applicable, and stabilize any disturbance caused by removal of washout.
HERBICIDES, PESTICIDES AND RODENTICIDES
1. Store and apply herbicides, pesticides and rodenticides in accordance with label restrictions.
2. Store herbicides, pesticides esticides and rodenticides in their original containers with the label which lists
directions for use, ingredients and first aid steps in case of accidental poisoning.
3. Do not store herbicides, pesticides and rodenticides in areas where flooding is possible or where they
may spill or leak into wells, stormwater drains, ground water or surface water. If a spill occurs, clean area
immediately.
4. Do not stockpile these materials onsite.
HAZARDOUS AND TOXIC WASTE
1. Create designated hazardous waste collection areas on -site.
2. Place hazardous waste containers under cover or in secondary containment.
3. Do not store hazardous chemicals, drums or bagged materials directly on the ground.
NCGOI GROUND STABILIZATION AND MATERIALS HANDLING
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION A: SELF -INSPECTION
Self -inspections are required during normal business hours in accordance with the table below. When adverse
weather or site conditions would cause the safety of the inspection personnel to be in jeopardy, the inspection
may be delayed until the next business day on which it is safe to perform the inspection. In addition, when a
storm event of equal to or greater than 1.0 inch occurs outside of normal business hours, the self -inspection shall
be performed upon the commencement of the next business day. Any time when inspections were delayed shall
be noted in the Inspection Record.
Frequency
Inspect
(during normal
Inspection records must include:
business hours)
(1) Rain gauge
Daily
Daily rainfall amounts.
maintained in
If no daily rain gauge observations are made during weekend or
good working
holiday periods, and no individual -day rainfall information is
order
available, record the cumulative rain measurement for those un-
attended days (and this will determine if a site inspection is
needed). Days on which no rainfall occurred shall be recorded as
"zero." The permittee may use another rain -monitoring device
approved by the Division.
(2) E&SC
At least once per
1. Identification of the measures inspected,
Measures
7 calendar days
2. Date and time of the inspection,
and within 24
3. Name of the person performingthe inspection,
hours ofarain
4. Indication of whether the measures were operating
event> 1.0 inch in
properly,
24 hours
5. Description of maintenance needs for the measure,
6. Description, evidence, and date of corrective actions taken.
(3) Stormwater
At least once per
1. Identification of the discharge outfalls inspected,
discharge
7 calendar days
2. Date and time of the inspection,
outfalls (SDOs)
and within 24
3. Name of the person performingthe inspection,
hours of a rain
4. Evidence of indicators of stormwater pollution such as oil
event> 1.0 inch in
sheen, floating or suspended solids or discoloration,
24 hours
5. Indication of visible sediment leaving the site,
6. Description, evidence, and date of corrective actions taken.
(4) Perimeter of
At least once per
Ifvisible sedimentation is found outside site limits, then a record
site
7 calendar days
of the following shall be made:
and within 24
1. Actions taken to clean up or stabilize the sediment that has left
hours of a rain
the site limits,
event> 1.0 inch in
2. Description, evidence, and date of corrective actions taken, and
24 hours
3. An explanation as to the actions taken to control future
releases.
(5) Streams or
At least once per
If the stream or wetland has increased visible sedimentation or a
wetlands onsite
7 calendar days
stream has visible increased turbidityfromthe construction
or offsite
and within 24
activity, then a record of the following shall be made:
(where
hours of a rain
1. Description, evidence and date of corrective actions taken, and
accessible)
event > 1.0 inch in
2. Records of the required reportsto the appropriate Division
24 hours
Regional Office per Part III, Section C, Item (2)(a) of this permit.
(6) Ground
After each phase
1. The phase of grading (installation of perimeter E&SC
stabilization
of grading
measures, clearing and grubbing, installation of storm
measures
drainage facilities, completion of all land -disturbing
activity, construction or redevelopment, permanent
ground cover).
2. Documentation thatthe required ground stabilization
measures have been provided within the required
timeframe or an assurance thatthey will be provided as
soon as possible.
NOTE: The rain inspection resets the required 7 calendar day inspection requirement.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION B: RECORDKEEPING
1. E&SC Plan Documentation
The approved E&SC plan as well as any approved deviation shall be kept on the site. The approved E&SC plan
must be kept up-to-date throughout the coverage under this permit. The following items pertaining to the E&SC
plan shall be kept on site and available for inspection at all times during normal business hours.
Item to Document
Documentation Requirements
(a) Each E&SC measure has been installed
Initial and date each E&SC measure on a copy
and does not significantly deviate from the
of the approved E&SC plan or complete, date
locations, dimensions and relative elevations
and sign an inspection report that lists each
shown on the approved E&SC plan.
E&SC measure shown on the approved E&SC
plan. This documentation is required upon the
initial installation of the E&SC measures or if
the E&SC measures are modified after initial
installation.
(b) A phase of grading has been completed.
Initial and date a copy of the approved E&SC
plan or complete, date and sign an inspection
report to indicate completion of the
construction phase.
(c) Ground cover is located and installed
Initial and date a copy of the approved E&SC
in accordance with the approved E&SC
plan or complete, date and sign an inspection
plan.
reportto indicate compliance with approved
ground cover specifications.
(d) The maintenance and repair
Complete, date and sign an inspection report.
requirements for all E&SC measures
have been performed.
(e) Corrective actions have been taken
Initial and date a copy of the approved E&SC
to E&SC measures.
plan or complete, date and sign an inspection
report to indicate the completion of the
corrective action.
2. Additional Documentation to be Kept on Site
In addition to the E&SC plan documents above, the following items shall be kept on the
site and available for inspectors at all times during normal business hours, unless the
Division provides a site -specific exemption based on unique site conditions that make
this requirement not practical:
(a) This General Permit as well as the Certificate of Coverage, after it is received.
(b) Records of inspections made during the previous twelve months. The permittee shall record the required
observations on the Inspection Record Form provided by the Division or a similar inspection form that
includes all the required elements. Use of electronically -available records in lieu of the required paper
copies will be allowed if shown to provide equal access and utility as the hard -copy records.
3. Documentation to be Retained for Three Years
All data used to complete the a-NOI and all inspection records shall be maintained for a period
of three years after project completion and made available upon request. [40 CFR 122.411
PART II, SECTION G, ITEM (4)
DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT
Sediment basins and traps that receive runoff from drainage areas of one acre or more shall use outlet structures that withdraw water from the surface when these devices need to be drawn down for maintenance or close out unless this is
infeasible. The circumstances in which it is not feasible to withdraw water from the surface shall be rare (for example, times with extended cold weather). Non -surface withdrawals from sediment basins shall be allowed only when all of the
following criteria have been met:
(a) The E&SC plan authority has been provided with documentation of the non -surface withdrawal and the specific time periods or conditions in which it will occur. The non -surface withdrawal
shall not commence until the E&SC plan authority has approved these items,
(b) The non -surface withdrawal has been reported as an anticipated bypass in accordance with Part III, Section C, Item (2)(c) and (d) of this permit,
(c) Dewatering discharges are treated with controls to minimize discharges of pollutants from stormwater that is removed from the sediment basin. Examples of appropriate controls include
properly sited, designed and maintained dewatering tanks, weir tanks, and filtration systems,
(d) Vegetated, upland areas of the sites or a properly designed stone pad is used to the extent feasible at the outlet of the dewatering treatment devices described in Item (c) above,
(e) Velocity dissipation devices such as check dams, sediment traps, and riprap are provided at the discharge points of all dewatering devices, and
(f) Sediment removed from the dewatering treatment devices described in Item (c) above is disposed of in a manner that does not cause deposition of sediment into waters of the United States.
SECTION C: REPORTING
EFFECTIVE: 04/01 / 19
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
1. Occurrences that Must be Reported
Permittees shall report the following occurrences:
(a) Visible sediment deposition in a stream or wetland.
(b) Oil spills if:
• They are 25 gallons or more,
• They are less than 25 gallons but cannot be cleaned up within 24 hours,
• They cause sheen on surface waters (regardless of volume), or
• They are within 100 feet of surface waters (regardless of volume).
(c) Releases of hazardous substances in excess of reportable quantities under Section 311 of the Clean
Water Act (Ref: 40 CFR 110.3 and 40 CFR 117.3) or Section 102 of CERCLA (Ref: 40 CFR 302.4) or G.S.143-215.85.
(d) Anticipated bypasses and unanticipated bypasses.
(e) Noncompliance with the conditions of this permit that may endanger health or the environment.
2. Reporting Timeframes and Other Requirements
After a permittee becomes aware of an occurrence that must be reported, he shall contact the appropriate
Division regional office within the timeframes and in accordance with the other requirements listed below.
Occurrences outside normal business hours may also be reported to the Department's Environmental Emergency
Center personnel at [phone].
Occurrence
Reporting Timef rames (After Discovery) and Other Requirements
(a) Visible sediment
• Within24 hours, an oral orelectronic notification.
deposition in a
• Within 7 calendar days, a report that contains a description of the
stream or wetland
sediment and actions taken to address the cause of the deposition.
Division staff may waive the requirement for a written report on a
case -by -case basis.
• If the stream is named on the NC 303(d) list as impaired for sediment -
related causes, the permittee may be required to perform additional
monitoring, inspections or apply more stringent practices if staff
determine that additional requirements are needed to assure compliance
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with the federal or state impaired -waters conditions.
(b) Oil spills and
• Within24 hours, an oral orelectronic notification. The notification
release of
shall include information about the date, time, nature, volume and
hazardous
location of the spill or release.
substances per Item
1(b)-(c) above
(c) Anticipated
• A report at least ten days before the date of the bypass, if possible.
bypasses [40 CFR
The report shall include an evaluation of the anticipated quality and
122.41(m)(3)]
effect of the bypass.
(d) Unanticipated
• Within24 hours, an oral orelectronic notification.
bypasses [40 CFR
• Within 7 calendar days, a report that includes an evaluation of the
122.41(m)(3)]
quality and effect of the bypass.
(e) Noncompliance
• Within24 hours, an oral orelectronic notification.
with the conditions
• Within 7 calendar days, a report that contains a description of the
of this permit that
noncompliance, and its causes; the period of noncompliance,
may endanger
including exact dates and times, and if the noncompliance has not
health or the
been corrected, the anticipated time noncompliance is expected to
environment[40
continue; and steps taken or planned to reduce, eliminate, and
CFR 122.41(I)(7)]
prevent reoccurrence of the noncompliance. [40 CFR 122.41(I)(6).
• Division staff may waive the requirement for a written report on a
case -by -case basis.
SEEDING SPECIFICATIONS
SEEDBED PREPARATION
THOROUGHLY CULTIVATE LAWN AREAS BY DISCING TO A DEPTH OF 6" AND
RAKING THE SURFACE SMOOTH TO REQUIRED GRADES. APPLY 4,000 LBS. OF
AGRICULTURAL LIME PER ACRE AND 1,000 LBS. OF 10-10-10 OREQUIVALENT
,
FERTILIZER PER ACRE.
TEMPORARY SEEDING
WHERE TEMPORARY SEEDING IS REQUIRED PRIOR TO SEEDING OF PERMANENT
LAWNS OR FILL SLOPES, PROCEED AS FOLLOWS:
AUG. 15TH-MAR. 1ST SOW RYE GRAIN AT THE RATE OF
120 LBS. PER ACRE.
MAR. 1ST-AUG. 15TH SOW GRAIN MILLET AT THE RATE
OF 40 LBS. PER ACRE.
PERMANENT SEEDING
SEASON
VARIETY
RATE(,LBS/ACRE)_
AUG 15 -
NOV 1ST
KOREAN LESPEDEZA
50
OR KOBE LESPEDEZA
50
AND TALL FESCUE
60
NOV 15 -
MARCH 1ST
TALL FESCUE
120
AND ABRUZZI RYE
25
MARCH 1 -
APRIL 15
TALL FESCUE
120
APRIL 15 -
JUNE 30
HULLED COMMON BERMUDA
12
JUNE 30 -
AUG 15
TALL FESCUE
60
AND BROWNTOP MILLET
25
MULCHING
IMMEDIATELY AFTER SEED AREA SOWN, MULCH THE ENTIRE AREA EVENLY WITH
A LAYER OF WHEAT STRAW TO PROTECT AREA FROM EROSION. MULCH TO BE
APPLIED AT A RATE OF 75-100 LBS. PER 1000 SQUARE FEET.
SECURING MULCH:
THE MULCH SHALL BE HELD IN PLACE BY EMULSIFIED ASPHALT BINDER ON
SLOPES 2 TO 1 OR STEEPER, OR AS REQUIRED. APPLY ASPHALT AT 0.10
GALLON PER SQUARE YARD. IN HEAVY TRAFFIC AREAS, USE TYPE "RS" OR
"CRS" TO MINIMIZE REMOVAL OF TACK COAT. SYNTHETIC BINDERS MAY BE
USED AS RECOMMENDED BY THE MANUFACTURER TO ANCHOR THE MULCH.
TEMPORARY CHANNEL LININGS IF REQUIRED SHALL BE INSTALLED IN AREAS AS
SHOWN ON PLANS, OR AS REQUIRED TO PREVENT EROSION. LININGS AREA TO
BE LEFT IN PLACE THROUGHOUT PERMANENT SEEDING PROCEDURE.
MAINTENANCE
I. TEMPORARY SEEDING:
RESEED AND MULCH AREAS WHERE SEEDLING EMERGENCE IS POOR, OR
WHERE EROSION OCCURS, AS SOON AS POSSIBLE. DO NOT MOW.
PROTECT FROM TRAFFIC AS MUCH AS POSSIBLE.
II. PERMANENT SEEDING:
GENERALLY A STAND OF VEGETATION CANNOT BE DETERMINED TO BE
FULLY ESTABLISHED UNTIL SOIL COVER HAS BEEN MAINTAINED FOR ONE
FULL YEAR FROM PLANTING. INSPECT SEEDED AREAS FOR FAILURE AND
MAKE NECESSARY REPAIRS AND RESEEDINGS WITHIN THE SAME SEASON, IF
POSSIBLE.
RESEEDING --IF A STAND HAS INADEQUATE COVER, RE-EVALUATE CHOICE
OF PLANT MATERIALS AND QUANTITIES OF LIME AND FERTILIZER.
RE-ESTABLISH THE STAND AFTER SEEDBED PREPARATION OR OVER -SEED
THE STAND. CONSIDER SEEDING TEMPORARY, ANNUAL SPECIES IF THE
TIME OF YEAR IS NOT APPROPRIATE FOR PERMANENT SEEDING.
NOTE: Pursuant to G.S. 113A-57(2), the angle for graded slopes and fills
shall be no greater than the angle that can be retained by vegetative cover
or other adequate erosion -control devices or structures. In any event, slopes
left exposed will, within 14 calendar days of completion of any phase of
grading be planted or otherwise provided with temporary or permanent ground
cover, devices, or structures sufficient to restrain erosion. Pursuant to G.S.
113A-57(3), provisions for permanent ground cover sufficient to restrain
erosion must be accomplished for all disturbed areas within 14 working days
or 90 calendar days (whichever is shorter) following completion of construction
or development.
VEGETATION MANTAINANCE:
IF A STAND HAS INADEQUATE COVER, RE-EVALUATE CHOICE OF PLANT
MATERIALS AND QUANTITIES OF LIME AND FERTILIZER. RE-ESTABLISH THE
STAND AFTER SEEDBED PREPARATION OR OVER -SEED THE STAND. CONSIDER
SEEDING TEMPORARY, ANNUAL SPECIES IF THE TIME OF THE YEAR IS NOT
APPROPRIATE FOR PERMANENT SEEDING.
CONSTRUCTION SEQUENCE
1) INSTALL THE TEMPORARY CONSTRUCTION ENTRANCE.
2) INSTALL EROSION CONTROL MEASURES AS SHOWN ON PLANS.
3) COMPLETE INSTALLATION OF SITE DRAINAGE NETWORKS AND SITE SWALES
WITH ASSOCIATED EROSION CONTROL PROTECTION BEFORE BEGINNING SITE
GRADING.
4) STRIP TOPSOIL.
5) GRADE SITE.
6) GRASS AREAS THAT WILL NOT BE DISTURBED.
7) INSTALL UTILITIES.
7) PLACE BASE -COURSE.
8) SEED AND MULCH ALL AREAS TO PROVIDE PERMANENT GROUNDCOVER
WITHIN 14 WORKING DAYS FOLLOWING COMPLETION OF ANY PHASE OF
GRADING, AND WITHIN 14 WORKING DAYS OR 90 CALENDAR DAYS, WHICHEVER
PERIOD IS SHORTER, FOLLOWING COMPLETION OF CONSTRUCTION OR
DEVELOPMENT.
9) MAINTAIN ALL TEMPORARY MEASURES UNTIL PERMANENT GROUND COVER IS
ESTABLISHED.
10) NO SEDIMENT OR EROSION CONTROL MEASURES ARE TO BE REMOVED
WITHOUT THE APPROVAL OF AN NCDEQ INSPECTOR.
NOTIFICATION OF COMBINED SELF -MONITORING AND SELF -INSPECTION FORM:
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 SEDIMENTATION CONTROL PLAN IS BEING
FOLLOWED. RULES DETAILING THE DOCUMENTATION OF THESE INSPECTIONS TOOK EFFECT OCTOBER 1,
2010.
TO SIMPLIFY DOCUMENTATION OF SELF -INSPECTION REPORTS AND NPDES SELF -MONITORING REPORTS,
DWQ AND DEMLR DEVELOPED A COMBINED FORM. THE SELF -INSPECTION PROGRAM IS SEPARATE FROM
THE WEEKLY SELF -MONITORING PROGRAM OF THE 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 SHOULD BE CONDUCTED AFTER EACH PHASE OF THE PROJECT AND CONTINUED UNTIL
PERMANENT GROUND COVER IS ESTABLISHED. THE FORM CAN BE ACCESSED AT:
HT rP://PORTAL.NCDENR.0RG/WEB/LR/EROSION
IF YOU HAVE QUESTIONS OR CANNOT ACCESS THE FORM, PLEASE CONTACT THE FAYETTEVILLE REGIONAL
OFFICE AT [phone].
NOTE: A SEPARATE EROSION CONTROL PERMIT WILL BE REQUIRED FOR EACH INDIVIDUAL LOT PRIOR TO
LAND DISTURBANCE.
NOTE: NO SURFACE WATERS, WETLANDS, OR FLOOD ZONES ARE TO BE DISTURBED DURING
CONSTRUCTION.
PURSUANT TO G.S. 143-215.1 ALL PERIMETER DIKES, SWALES,
DITCHES, PERIMETER SLOPES AND ALL SLOPES GREATER THAN 3
HORIZONTAL TO 1 VERTICAL (3:1) SHALL BE PROVIDED
TEMPORARY OR PERMANENT STABILIZATION WITH GROUND COVER
AS SOON AS PRACTICABLE BUT IN ANY EVENT WITHIN 7
CALENDAR DAYS FROM THE LAST LAND DISTURBING ACTIVITY.
11) Groand Stabilization• N
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 s
y
less in length and are
th3:1
an
not steeper than 2: 1,
14 days are allowed.
• Slopes 3:1 or
7-days for slopes
flatter
14 days
greater than 50 feet
in length
• All other areas
None
(except for
with slopes flatter
14 days
perimeters and
than 4:1
H W Zones
`Extensions of time may be approved by the permitting authority
based on weather or other site -specific conditions that make compliance
impracticable." (Section II.13(2)(b))
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EFFECTIVE: 04/01 / 19