20200597 Ver 2_Erosion Control Details_20220217

PERMANENT SEEDING (MAX. SLOPE 3:1)
PERMANENT SEEDING (SLOPES FROM 3:1 TO 2:1)
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GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCGO1 CONSTRUCTION GENERAL PERMIT
Implementing the details and specifications on this plan sheet will result in the construction
activity being considered compliant with the Ground Stabilization and Materials Handling
sections of the NCGO1 Construction 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
Timeframe variations
days after ceasing
land disturbance
(a) Perimeter dikes,
swales, ditches, and
perimeter slopes
7
None
(b) High Quality Water
7
None
(HOW) Zones
(c) Slopes steeper than
If slopes are 10' or less in length and are
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 HQW
Zones
-10 days for Falls Lake Watershed
(e) Areas with slopes
-7 days for perimeter dikes, swales,
ditches, perimeter slopes and HOW Zones
flatter than 4:1
14
-10 days for Falls Lake Watershed unless
there is zero 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 under any stored equipment.
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 and dispose of waste in designated waste containers.
PAINT AND OTHER LIQUID WASTE
1. Do not dump paint and other liquid waste into storm drains, streams or wetlands.
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 ground, at least 50 feet away from storm drains,
streams or wetlands unless there is no alternative reasonably available. If 50 foot
offset is not attainable, provide relocation of portable toilet behind silt fence or place
on a gravel pad and surround with sand bags.
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.
II
NORTH CAROLINA
Environmental Quality
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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 place the mixer 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.
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 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 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.
NCGO1 GROUND STABILIZATION AND MATERIALS HANDLING
EFFECTIVE: 04/01/19
SELF -INSPECTION,
SECTION A: SELF -INSPECTION
PART III
RECORDKEEPING AND REPORTING
normal business hours in accordance with the table
site conditions would cause the safety of the inspection
may be delayed until the next business day on
In addition, when a storm event of equal to or
of normal business hours, the self -inspection shall be
of the next business day. Any time when inspections
Inspection Record.
Self -inspections are required during
below. When adverse weather or
personnel to be in jeopardy, the inspection
which it is safe to perform the inspection.
greater than 1.0 inch occurs outside
performed upon the commencement
were delayed shall be noted in the
Inspect
Frequency
(during normal
business hours)
Inspection records must include:
(1) Rain gauge
maintained in
good working
order
Daily
Daily rainfall amounts.
If no daily rain gauge observations are made during weekend or
holiday periods, and no individual -day rainfall information is
available, record the cumulative rain measurement for those un-
attended days (anc 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
Measures
At least once per
7 calendar days
and within 24
hours of a rain
event > 1.0 inch in
24 hours
1. Identification of the measures inspected,
2. Date and time of the inspection,
3. Name of the person performing the inspection,
4. Indication of whether the measures were operating
properly,
5. Description of maintenance needs for the measure,
6. Description, evidence, and date of corrective actions taken.
(3) Stormwater
discharge
outfalls (SDCs)
At least once per
7 calendar days
and within 24
hours of a rain
event > 1.0 inch in
24 hours
1. Identification of the discharge outfalls inspected,
2. Date and time of the inspection,
3. Name of the person performing the inspection,
4. Evidence of indicators of stormwater pollution such as oil
sheen, floating or suspended solids or discoloration,
5. Indication of visible sediment leaving the site,
6. Description, evidence, and date of corrective actions taken.
(4) Perimeter of
site
At least once per
7 calendar days
and within 24
hours of a rain
event > 1.0 inch in
24 hours
If visible sedimentation is found outside site limits, then a record
of the following shall be made:
1. Actions taken to clean up or stabilize the sediment that has left
the site limits,
2. Description, evidence, and date of corrective actions taken, and
3. An explanation as to the actions taken to control future
releases.
(5) Streams or
wetlands onsite
or offsite
(where
accessible)
At least once per
7 calendar days
and within 24
hours of a rain
event > 1.0 inch in
24 hours
If the stream or wetland has increased visible sedimentation or a
stream has visible increased turbidity from the construction
activity, then a record of the following shall be made:
1. Description, evidence and date of corrective actions taken, and
2. Records of the required reports to the appropriate Division
Regional Office per Part III, Section C, Item (2)(a) of this permit.
(6) Ground
stabilization
measures
After each phase
of grading
1. The phase of grading (installation of perimeter E&SC
measures, clearing and grubbing, installation of storm
drainage facilities, completion of all land -disturbing
activity, construction or redevelopment, permanent
ground cover).
2. Documentation that the required ground stabilization
measures have been provided within the required
timeframe or an assurance that they will be provided as
soon as possible.
NOTE: The rain inspection resets the required 7 calendar day inspection requirement.
SELF -INSPECTION, RECORDKEEPING
SECTION B: RECORDKEEPING
PART III
AND REPORTING
deviation shall be kept on the site. The
throughout the coverage under this permit.
plan shall be kept on site and available for
hours.
1.
2.
3.
E&SC Plan Documentation
The approved E&SC plan as well as any approved
approved E&SC plan must be kept up-to-date
The following items pertaining to the E&SC
inspection at all times during normal business
Item to Document
Documentation Requirements
(a) Each E&SC measure has been installed
and does not significantly deviate from the
locations, dimensions and relative elevations
shown on the approved E&SC plan.
Initial and date each E&SC measure on a copy
of the approved E&SC plan or complete, date
and sign an inspection report that lists each
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
in accordance with the approved E&SC
plan.
Initial and date a copy of the approved E&SC
plan or complete, date and sign an inspection
report to indicate compliance with approved
ground cover specifications.
(d) The maintenance and repair
requirements for all E&SC measures
have been performed.
Complete, date and sign an inspection report.
(e) Corrective actions have been taken
to E&SC measures.
Initial and date a copy of the approved E&SC
plan or complete, date and sign an inspection
report to indicate the completion of the
corrective action.
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.
Documentation to be Retained for Three Years
All data used to complete the e-NOI and all inspection records shall be maintained for a period
of three years after project completion and made available upon request. [40 CFR 122.41]
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.
PART III
SELF -INSPECTION, RECORDKEEPING AND REPORTING
SECTION C: 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 (800)
858-0368.
Occurrence
Reporting Timeframes (After Discovery) and Other Requirements
(a) Visible sediment
deposition in a
stream or wetland
• Within 24 hours, an oral or electronic notification.
• Within 7 calendar days, a report that contains a description of the
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
with the federal or state impaired -waters conditions.
(b) Oil spills and
release of
hazardous
substances per Item
1(b)-(c) above
• Within 24 hours, an oral or electronic notification. The notification
shall include information about the date, time, nature, volume and
location of the spill cr release.
(c) Anticipated
bypasses [40 CFR
122.41(m)(3)]
• A report at least ten days before the date of the bypass, if possible.
The report shall include an evaluation of the anticipated quality and
effect of the bypass.
(d) Unanticipated
bypasses [40 CFR
122.41(m)(3)]
• Within 24 hours, an oral or electronic notification.
• Within 7 calendar days, a report that includes an evaluation of the
quality and effect of the bypass.
(e) Noncompliance
with the conditions
of this permit that
may endanger
health or the
environment[40
CFR 122.41(I)(7)J
• Within 24 hours, an oral or electronic notification.
• Within 7 calendar days, a report that contains a description of the
noncompliance, and its causes; the period of noncompliance,
including exact dates and times, and if the noncompliance has not
been corrected, the anticipated time noncompliance is expected to
continue; and steps taken or planned to reduce, eliminate, and
prevent reoccurrence of the noncompliance. [40 CFR 122.41(1)(6).
• Division staff may waive the requirement for a written report on a
case -by -case basis.
r, sI NORTH CAROLINA
(Environmental Quality
PLANTING PERIOD
SEED MIXTURE
RATE
(LB/AC)
AUG. 15 - NOV. 1
TALL FESCUE
300
NOV. 1- MAR. 1
TALL FESCUE &
300
ABRUZZI RYE
25
MAR. 1 - APR. 15
TALL FESCUE
300
APR. 15 - JUNE 30
HULLED COMMON
25
BERMUDAGRASS
JUL. 1 - AUG. 15**
TALL FESCUE
120
& BROWNTOP MILLET
35
& SORGHUM-SUDAN HYBRIDS
30
LIME
4,000
FERTILIZER
10-10-10
1,000
MULCH
STRAW
4,000
** DENOTES TEMPORARY SEEDING MIXTURE. RESEED ACCORDING TO
OPTIMUM SEASON FOR PERMANENT SEEDING.
SOIL PREPARATION:
• SCARIFY SUBSOIL TO A DEPTH OF 3 INCHES.
• SPREAD TOPSOIL TO A MINIMUM DEPTH OF 4 INCHES.
SEED:
• ACCOMPLISH SEEDING BY MEANS OF AN APPROVED POWER DRAWN SEED DRILL,
COMBINATION CORRUGATED ROLLER SEEDER, APPROVED HAND OPERATED MECHANICAL
SEEDER, OR OTHER APPROVED METHODS TO PROVIDE EVEN DISTRIBUTIONS OF SEED.
• FRESH SEED GUARANTEED 95 PERCENT PURE WITH A MINIMUM GERMINATION RATE OF
85 PERCENT WITHIN ONE YEAR OF TESTS.
• DETERMINE AND MATCH EXISTING GRASS TYPE IN RESIDENTIAL LAWNS.
• PROVIDE THE ABOVE SEED MIXTURES, WITH LIME AND FERTILIZER, IN DISTURBED
AREAS INCLUDING NCDOT RIGHT-OF-WAYS.
FERTILIZER:
• MIXED, COMMERCIAL, FERTILIZER CONTAINING 10-10-10 PERCENTAGES OF AVAILABLE
NITROGEN, PHOSPHORIC ACID, AND POTASH RESPECTIVELY, PLUS SUPERPHOSPHATE
WITH 20 PERCENT P205 CONTENT.
• FERTILIZER SHALL BE DRY, IN GRANULAR (PELLET) FORM, SHALL BE DELIVERED TO
THE SITE IN THE MANUFACTURER'S ORIGINAL BAG OR CONTAINER WHICH SHALL BE
PLAINLY MARKED AS TO FORMULA.
PLANTING PERIOD
SEED MIXTURE
RATE
(LB/AC)
MAR. 1 - JUNE 1
SERICEA LESPEDEZA
50
MAR. 1 - APR. 15
& ADD TALL FESCUE
120
MAR. 1 - JUN. 30
OR ADD WEEPING LOVEGRASS
10
MAR. 1 - JUN. 30
OR ADD HULLED COMMON
25
BERMUDAGRASS
JUN. 1 - SEPT. 1**
TALL FESCUE
125
& BROWNTOP MILLET
30
& SORGHUM-SUDAN HYBRIDS
35
SEPT. 1 - MAR. 1
SERICEA LESPEDEZA
70
(UNHULLED-UNSCARIFIED)
& TALL FESCUE
120
NOV. 1 - MAR. 1
& ADD ABRUZZI RYE
25
LIME
4,000
FERTILIZER
10-10-10
1,000
MULCH
STRAW
4,000
** DENOTES TEMPORARY SEEDING MIXTURE. RESEED ACCORDING TO
OPTIMUM SEASON FOR PERMANENT SEEDING.
LIME:
• GROUND DOLOMITIC AGRICULTURAL LIMESTONE, NOT LESS THAN 85 PERCENT TOTAL
CARBONATES, GROUND SOT THAT 50 PERCENT PASSES 100 MESH SIEVE AND 90
PERCENT PASSES 30 MESH SIEVE. COARSER MATERIAL WILL BE ACCEPTABLE,
PROVIDED THE SPECIFIED RATES OF APPLICATION ARE INCREASE PROPORTIONATELY ON
THE BASIS OF QUANTITIES PASSING NO. 100 MESH SIEVE.
MULCHING AND MATTING:
• SLOPES FROM 0 TO 20 PERCENT: NOT LESS THAN 85 LBS PER 1,000 SQ. FT. USE
TACK TO PREVENT DISRUPTION OF MULCH.
• SLOPES GREATER THAN 20 PERCENT MULCH WITH MATTING. PIN MATTING TO THE
GROUND WITH WIRE STAPLES AT 5-FOOT INTERVALS, IMMEDIATELY AFTER SEEDING.
• FOR TACK USE AN ASPHALT TIE -DOWN OF EMULSIFIED ASPHALT GRADE AE-3 OR
CUT -BACK ASPHALT GRADE RC-2 OR OTHER APPROVED EQUAL. THE APPLICATION
RATE SHALL BE 0.10 GAL/SY (11 GAL. PER 1,000 SQ. FT.). AN APPROVED JUTE
MESH OR NET MAY BE USED IN LIEU OF TACKING STRAW MULCH.
TEMPORARY & PERMANENT SEEDING
PERMANENT RIPARIAN/WETLAND SEED MIXTURE ACCORDING TO PLANTING
PERIOD FOR PIEDMONT
COMMON NAME
TYPE*
PERCENTAGE
OF MIX
OPTIMAL PLANTING
DATES
SWITCHGRASS
WARM SEASON
10-15%
DEC.
1 - APR.
1
INDIANGRASS
WARM SEASON
10-30%
DEERTONGUE
WARM SEASON
5-25%
BIG BLUESTEM
WARM SEASON
10-30%
LITTLE BLUESTEM
WARM SEASON
10-30%
SWEET WOODREED
WARM SEASON
1-10%
RICE CUTGRASS
WARM SEASON
5-25%
REDTOP
PANICGRASS
WARM SEASON
10-20%
BEAKED
PANICGRASS
WARM SEASON
10-20%
PURPLE TOP
WARM SEASON
5-10%
EASTERN
GAM MAGRASS
WARM SEASON
5-10%
INDIAN WOODOATS
COLD SEASON
1-10%
FEB.
AUG.
15 - APR.
15 - OCT.
1,
15
VIRGINIA WILDRYE
COLD SEASON
5-25%
EASTERN BOTTLE-
BRUSH GRASS
COLD SEASON
5-10%
ROUGH BENTGRASS
COLD SEASON
10-20%
WINTER BENTGRASS
COLD SEASON
2-5%
SOFT RUSH
WETLAND
1-10%
DEC.
SEP.
1 - MAY 1,
1 - NOV. 1
SHALLOW SEDGE
WETLAND
1-10%
FOX SEDGE
WETLAND
1-10%
LEATHERY RUSH
WETLAND
2-5%
*PICK AT LEAST FOUR SPECIES, INCLUDING ONE FROM EACH TYPE.
NTS
TEMPORARY RIPARIAN/WETLAND SEED MIXTURE ACCORDING
TO PLANTING PERIOD FOR PIEDMONT
COMMON NAME
RATE/ACRE
OPTIMAL PLANTING
DATES
RYE GRAIN
30
AUG.
15
- MAY
1
WHEAT
30
AUG.
15
- MAY
1
GERMAN MILLET
10
MAY 1
-
AUG.
15
BROWNTOP MILLET
10
MAY 1
-
AUG.
15
TEMPORARY SEEDING NOTES:
• SINGLE SPECIES SELECTION FOR TEMPORARY COVER IS ACCEPTABLE.
• IN SOME CASES WHERE SEASONS OVERLAP, A MIXTURE OF TWO OR MORE TEMPORARY
SPECIES MAY BE NECESSARY.
• APPLICATION RATES SHOULD NOT EXCEED TO THE TOTAL RECOMMENDED RATE PER ACRE.
• TEMPORARY SEED SHOULD BE MIXED AND APPLIED SIMULTANEOUSLY WITH THE PERMANENT
SEED MIX IF OPTIMAL PLANTING DATES ALLOW.
PERMANENT SEEDING NOTES:
SEED:
• NO SPECIFIC SEEDING RATE IS GIVEN IN ORDER TO ALLOW FOR CUSTOM SEED MIXES BASED ON SITE
CHARACTERISTICS AND SEASON.
• HOWEVER, PERMANENT SEED INCLUSION IN THE MIXTURE SHOULD TOTAL 15 POUNDS OF PURE LIVE SEED
(PLS) PER ACRE DRILLED OR 15 TO 20 POUNDS PLS PER ACRE BROADCAST APPLIED.
• SELECTION OF FOUR OR MORE SPECIES IS RECOMMENDED FOR INCREASING CHANCES OF SUCCESSFUL
VEGETATION ESTABLISHMENT.
• IF OTHER SPECIES SUCH AS WILDFLOWERS ARE ADDED TO THE MIX, THEY SHOULD NOT BE COUNTED IN THE
MINIMUM SEEDING RATE FOR GRASSES.
• APPLY SEED UNIFORMLY WITH A CYCLONE SEEDER, DROP -TYPE SPREADER, DRILL OR HYDROSEEDER ON A
FIRM, FRIABLE SEEDBED. WHEN USING A DRILL, EQUIPMENT SHOULD BE CALIBRATED IN THE FIELD FOR THE
DESIRED SEEDING RATE.
FERTILIZER:
• APPROPRIATE PH LEVELS ARE BETWEEN 5.5 AND 7. APPLIED LEVELS OF PHOSPHORUS AND POTASSIUM
SHOULD BE ADJUSTED GIVEN LOCAL SOIL CHARACTERISTICS.
CITY OF RALEIGH - PLANS AUTHORIZED FOR CONSTRUCTION
Plans for the proposed use have been reviewed for general compliance with applicable codes. This
limited review, and authorization for construction is not to be considered to represent total
compliance with all legal requirements for development and construction. The property owner, design
consultants, and contractors are each responsible for compliance with all applicable City, State and
Federal laws. This specific authorization below is not a permit, nor shall it be construed to permit any
violation of City, State or Federal Law. All construction must be in accordance with all Local, State,
and Federal Rules and Regulations. This approval of this electronic document is only valid if the
document has not been modified and the digital signature below is valid:
REVISED PER OWNER COMMENT
REVISED PER REGULATORY REVIEW
N
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SEAL NOT VALID UNLESS SIGNED AND DATED
HIGHFILL
INFRASTRUCTURE
ENGINEERING, P.C.
2703 Jones Franklin Rd, Suite 201
Cary, NC 27518
Tel [phone]
www.hiepc.com
Firm License No. C-2586
Engineering is our profession.
Service is our passion.
IMPROVEMENTS
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RALEIGH WATER
RALEIGH, NC
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NCGO1 SELF -INSPECTION, RECORDKEEPING AND REPORTING
EFFECTIVE: 04/01/19
(RIPARIAN/WETLAND SEEDING
NTS
City of Raleigh Development Approval
PROJECT NO.
RAL1 801
ED-3.0

m
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STRAW WITH NETTING
6" MIN. OVERLAP AT
ROLL END (TYP.)
6" MIN. DEPTH KEY TRENCH
FOR ROLL END (TYP.)
OVERCUT CHANNEL 2" TO
ALLOW BULKING DURING
SEEDBED PREPARATION
6" MIN. DEPTH KEY
TRENCH FOR UPPER END
OF DOWNSLOPE ROLL.
PREPARED SURFACE
WITH SEED IN PLACE
NOTES:
1. UNROLL MATTING IN DIRECTION OF WATER FLOW, CENTERING THE FIRST ROLL ON THE
CHANNEL CENTERLINE. WORK FROM CENTER OF CHANNEL OUTWARD WHEN PLACING ROLLS.
LAY MAT SMOOTHLY AND FIRMLY ON THE SEEDED SURFACE. AVOID STRETCHING THE MATTING.
2. KEY —IN UPSTREAM END OF EACH MAT ROLL BY DIGGING A 6—INCH (MIN.) TRENCH AT THE
UPSTREAM END OF THE MATTING, PLACING THE ROLL END IN THE TRENCH, STAPLING THE MAT
IN PLACE, REPLACING THE EXCAVATED MATERIAL, AND TAMPING TO SECURE THE MAT END.
3. OVERLAP OR ABUT THE ROLL EDGES PER MANUFACTURER RECOMMENDATIONS. OVERLAP ROLL
ENDS BY 6 INCHES (MIN.), WITH THE UPSTREAM MAT OVERLAPPING ON TOP OF THE
DOWNSTREAM MAT.
4. STAPLE/STAKE MAT IN A STAGGERED PATTERN: ON 4—FOOT (MAX.) CENTERS THROUGHOUT AND
2—FOOT (MAX.) CENTERS ALONG SEAMS, JOINTS, AND ROLL ENDS.
5. ESTABLISH AND MAINTAIN VEGETATION SO THAT REQUIREMENTS FOR ADEQUATE VEGETATIVE
ESTABLISHMENT ARE CONTINUOUSLY MET.
CHANNEL STABILITY W/ EC MATTING
NTS
CITY OF RALEIGH - PLANS AUTHORIZED FOR CONSTRUCTION
Plans for the proposed use have been reviewed for general compliance with applicable codes. This
limited review, and authorization for construction is not to be considered to represent total
compliance with all legal requirements for development and construction. The property owner, design
consultants, and contractors are each responsible for compliance with all applicable City, State and
Federal laws. This specific authorization below is not a permit, nor shall it be construed to permit any
violation of City, State or Federal Law. All construction must be in accordance with all Local, State,
and Federal Rules and Regulations. This approval of this electronic document is only valid if the
document has not been modified and the digital signature below is valid:
REVISED PER OWNER COMMENT
REVISED PER REGULATORY REVIEW
PERMITTING
90% DESIGN
N
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SEAL NOT VALID UNLESS SIGNED AND DATED
HIGHFILL
INFRASTRUCTURE
ENGINEERING, P.C.
2703 Jones Franklin Rd, Suite 201
Cary, NC 27518
Tel [phone]
www.hiepc.com
Firm License No. C-2586
Engineering is our profession.
Service is our passion.
IMPROVEMENTS
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RALEIGH WATER
RALEIGH, NC
CO\TROL
City of Raleigh Development Approval
PROJECT NO.
RAL1 801
ED-4.0

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FINISHED GRADE
PIPE
" O.D.
1" THICK COMPRESSIBLE
JOINT FILLER MATERIAL
PROPOSED
PIPELINE
FLOWABLE FILL
FULL TRENCH WIDTH
EXIST
PIPE
6" MIN.,
18" MAX.
PROPOSED PIPELINE UNDER EXISTING PIPE
FINISHED GRADE
A
A
FLOWABLE FILL
FULL TRENCH WIDTH
12"
MIN.
f
PROPOSED
PIPELINE
6" MIN.,
18" MAX.
EXIST
PIPE
1" THICK COMPRESSIBLE
JOINT FILLER MATERIAL
PROPOSED PIPELINE OVER EXISTING PIPE
NOTE:
NO CRADLE REQUIRED FOR
SPACE GREATER THAN 18" FOR
WATER LINES
CONCRETE CRADLE PROTECTION
03-13 FOR PIPELINE CROSSINGS
HIEPC
DETAIL I.D.
DETAIL TITLE
1/12/2016
REVISED DATE
SCALE
NO SCALE
6" LIFTS OF HAND PLACED
DENSELY COMPACTED
INITIAL BACKFILL TO 1 FT
ABOVE TOP OF PIPE
PIPE
MINIMUM STONE EMBEDMENT
AS INDICATED. GREATER IF
REQUIRED BY MANUFACTURER
SHAPED BEDDING
TO PROVIDE BEARING
ALONG ENTIRE LENGTH
OF PIPE BARREL
- - PIP-E-
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it
it
COMPACT FINAL BACKFILL
IN 6" LIFTS UNDER
PAVEMENTS, 12" LIFTS IN
NOT -PAVED AREAS
12"
- D/2 (SEE NOTES 3&4)
D/8 (4"MIfN.)-
24" + D (MAX.)
12" + D (MIN.)
NOTES:
1. BEDDING SHALL BE # 67 STONE.
2. BACKFILL SHALL BE FREE OF ROCK LARGER
THAN 2" IN ANY DIRECTION (NO ROCK LARGER
THAN i" WITHIN 12" OF PIPE) AND FREE OF
DEBRIS AND ORGANIC MATTER. COMPACT TO
95% MAXIMUM DRY DENSITY.
3. BEDDING DETAIL SHOWN APPLIES TO PIPE
INVERT DEPTHS OF 14' OR LESS.
4. UNLESS NOTED OTHERWISE, FOR PVC GRAVITY
PIPE INSTALLED 14' - 20' DEEP, EXTEND
EMBEDMENT STONE TO 6" ABOVE PIPE CROWN.
5. WHEN ROCK IS ENCOUNTERED, INCREASE
BEDDING DEPTH UNDER PIPE TO 6".
31-20
HIEPC
DETAIL I.D.
PVC GRAVITY PIPE BEDDING
DETAIL TITLE
11/1/2016
REVISED DATE
SCALE
NO SCALE
EXISTING BRICK
MANHOLE
EXISTING MH RING
AND COVER
EXISTING RING AND
COVER
1 A
PLAN VIEW
EXISTING BRICK MANHOLE. D.I.
PIPE SECTION MAY NOT ENTER
THROUGH CONE SECTION.
PER
DRAWING
D.I. NIPPLE (18" LONG) INSIDE
FLEXIBLE MANHOLE CONNECTOR
1'
MIN.
SEE PLAN AND PROFILE SHEETS
FOR MANHOLE INVERT ELEVATION
NOTES:
1. ENCASE ENTIRE DROP
ASSEMBLY IN CONCRETE. 1'
MINIMUM CONC. COVER ON
EACH SIDE, BOTTOM, AND TOP.
SECTION VIEW
CONCRETE TO TERMINATE AT
SPRINGLINE OF PIPE
D.I. MJ TEE W/RETAINER GLANDS
USE RESTRAINED JOINT, TYP.
D.I.P. OR PVC a
D.I. PIPE
3000 PSI CONCRETE
ENCASEMENT
M.J. 90° BEND
W/RETAINER GLANDS
D.I. NIPPLE (18" LONG) INSIDE
FLEXIBLE MANHOLE CONNECTOR
33-11
HIEPC
DETAIL I.D.
OUTSIDE DROP MANHOLE — TEE
DETAIL TITLE
3/7/2019
REVISED DATE
SCALE
NO SCALE
SHOULDER
DITCH OF ROAD
36" MINIMUM COVER
CARRIER PIPE TO BE
DIP AND EXTEND 4'
MIN. PAST BOTH ENDS
OF CASING.
c ROAD
5' MINIMUM DEPTH
STEEL CASING PIPE
SHOULDER
OF ROAD
— TOE OF SLOPE
5' MIN
MASONRY ENCLOSURE
EACH END OF CASING PIPE, TYP.
SEE DETAIL S-39/SD-3.0 FOR CASING
PIPE ALIGNMENT GUIDES.
NOTE: ALL ENCASEMENTS SHALL EXTEND
FROM DITCH LINE TO DITCH LINE IN CUT
SECTIONS, 5' BEYOND THE TOE OF SLOPE
IN FILL SECTIONS, AND 10' BEYOND THE
EDGE OF PAVEMENT IN SECTIONS WITH NO
DITCH OR FILL AREA (PER NCDOT)
33-22
HIEPC
DETAIL I.D.
BORE & JACK UNDER STATE
ROAD (NCDOT)
DETAIL TITLE
11/1/2016
REVISED DATE
SCALE
NO SCALE
ROAD
EDGE OF PAVEMENT
II
II
L 15' MIN.
„B, U�
TRENCH
BOX
20' MIN.
8' MIN.
PLAN
TRENCH BOX
EDGE OF PAVEMENT
0
0
0
36"
MIN.
STEEL CASIING
SECTION
NOTE: NCDOT STANDARDS REQUIRE THAT "A" AND "B" BE
EQUAL TO OR GREATER THAN THE DEPTH "D" OF THE BORE
PIT BASED ON A 1:1 SLOPE. IF DISTANCE "A" IS LESS THAN
DEPTH "D" AS INDICATED BY THE PLANS, COMPLY WITH
NCDOT "STANDARD TEMPORARY SHORING FOR MAINTENANCE
OF TRAFFIC" DETAIL. THIS IS NOT A TRENCH DESIGN.
33-23
HIEPC
DETAIL I.D.
BORE PIT (TYPICAL)
DETAIL TITLE
11/1/2016
REVISED DATE
SCALE
NO SCALE
CAM-LOK WATER TIGHT
MANHOLE FRAME AND COVER
CENTERED AND CAST IN TOP
MIN. 12" PRE -CAST
TOP SLAB
ALL NEW MANHOLES SHALL HAVE CAST IN
PLACE GALVANIZED PIPE FLANGE. INSTALL BUIND
FLANGE ON MANHOLES WITHOUT VENT PIPE.
2'
ECCENTRIC TRANSITION
RISER
r"-1 DETAIL
MAX. 24"
GRADE
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6
9-INCH THICK
#67 STONE BASE
ECCENTRIC TRANSITION RISER MANHOLES
NTS
CITY OF RALEIGH - PLANS AUTHORIZED FOR CONSTRUCTION
Plans for the proposed use have been reviewed for general compliance with applicable codes. This
limited review, and authorization for construction is not to be considered to represent total
compliance with all legal requirements for development and construction. The property owner, design
consultants, and contractors are each responsible for compliance with all applicable City, State and
Federal laws. This specific authorization below is not a permit, nor shall it be construed to permit any
violation of City, State or Federal Law. All construction must be in accordance with all Local, State,
and Federal Rules and Regulations. This approval of this electronic document is only valid if the
document has not been modified and the digital signature below is valid:
REVISED PER OWNER COMMENT
REVISED PER REGULATORY REVIEW
PERMITTING
90% DESIGN
z
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SEAL NOT VALID UNLESS SIGNED AND DATED
HIGHFILL
INFRASTRUCTURE
ENGINEERING, P.C.
2703 Jones Franklin Rd, Suite 201
Cary, NC 27518
Tel [phone]
www.hiepc.com
Firm License No. C-2586
Engineering is our profession.
Service is our passion.
IMPROVEMENTS
Co)
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RALEIGH WATER
RALEIGH, NC
City of Raleigh Development Approval
PROJECT NO.
RAL1 801
MD-1 .0

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REMOVE AREA OF PAVEMENT AS NECESSARY
REMOVE MANHOLE REPAIR PAVEMENT PER APPLICABLE DETAIL.
RING AND COVER
w
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a
CC
SECTION A —A
IN PAVEMENT
A
PLUG ALL INVERTS
WITH CONCRETE PLUG
('TETAI L
TRENT WIDTH
SECTION VIEW
REPLACE REMOVED SECTION
WITH FLOWABLE FILL UP TO
PAVEMENT REPAIR. SEE
APPLICABLE PAVEMENT REPAIR
DETAIL.
FILL WITH EXCAVATABLE
FLOWABLE FILL (150 PSI MAX.)
PLUG ALL INVERTS
WITH CONCRETE PLUG
PLAN
REMOVE MANHOLE
RING AND COVER
REMOVE TO 3'
MIN. BELOW GRADE
T
A
REMOVE CONE
REPLACE REMOVED
SECTION(S) WITH COMPACTED
FILL IN 6" LIFTS
V
—, FILL WITH EXCAVATABLE
FLOWABLE FILL (150 PSI MAX.)
TO THE TOP OF THE REMAINING
MANHOLE SECTION
SECTION A —A
IN GRASSED AREA
ABANDON EX. MANHOLE
6 MIN.
z
WELD RING OR FRICTION
RESTRAINT
SEWER PIPE —\
NTS
PLUG ALL INVERTS
WITH CONCRETE PLUG
CONCRETE ANTI —SEEP COLLAR
TRENCH WALL
1 2'
PLAN VIEW
NOTES:
1. EMBED COLLAR A MINIMUM OF 6—INCHES INTO UNDISTURBED SOIL.
2. BED PIPE PER DETAIL S-1/SD-1.0.
DETAIL
ANTI -SEEP COLLAR
PIPE STRAP
PROVIDE 1" THICK COMPRESSIBLE
JOINT FILLER MATERIAL BETWEEN
COLLAR AND PIPE WALL
SEE BEDDING DETAIL
CONCRETE BASE
PIPE OD + MIN. 12'
co
6"
MIN. 2"X2" BACKER PLATE
CAST INTO CONCRETE W/
NUT ON EACH SIDE
a
as
6x6x2.0 WWF
1 LAYER
1/2" 304 SS THREADED ROD.
ANCHOR BOLTS. PLACE HALF WAY
BETWEEN WALL OF TRENCH AND
OUTSIDE OF PIPE.
304 STAINLESS STEEL NUT
NOTES:
1. FOR BEDDING REQUIREMENTS, SEE DETAIL S-1/SD-1.0
2. ANTI —FLOTATION ANCHORS SHALL BE INSTALLED ON ALL PIPE
WITH LESS THAN 4' OF COVER.
3. FOR PIPE SEGMENTS REQUIRING ANTI —FLOTATION ANCHOR, THREE
STRAPS SHALL BE INSTALLED EVENLY ALONG THE PIPE SEGMENT.
4. ANTI —FLOTATION ANCHOR SHALL RUN THE LENGTH OF THE ENTIRE
PIPE SEGMENT
4
1/4" THICK
3
NOTES:
1. STRAP SHALL BE 304 STAINLESS STEEL
(DETAIL - ANTI -FLOTATION ANCHOR
LANDSCAPE
FABRIC
2" PEAGRAVEL
EX. GRADE
COMPACTED CRUSHED STONE BASE,
MIN. 2" AFTER COMPACTION
METAL EDGING
(4DETAIL - GRAVEL WALKING PATH
NOTE: ALL CONSTRUCTION SHALL ADHERE TO
CITY OF RALEIGH STANDARDS AND SPECIFICATIONS
NTS
NTS
1 /4" HOLE, TYP.
CITY OF RALEIGH - PLANS AUTHORIZED FOR CONSTRUCTION
Plans for the proposed use have been reviewed for general compliance with applicable codes. This
limited review, and authorization for construction is not to be considered to represent total
compliance with all legal requirements for development and construction. The property owner, design
consultants, and contractors are each responsible for compliance with all applicable City, State and
Federal laws. This specific authorization below is not a permit, nor shall it be construed to permit any
violation of City, State or Federal Law. All construction must be in accordance with all Local, State,
and Federal Rules and Regulations. This approval of this electronic document is only valid if the
document has not been modified and the digital signature below is valid:
REVISED PER OWNER COMMENT
REVISED PER REGULATORY REVIEW
PERMITTING
90% DESIGN
z
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HIGHFILL
INFRASTRUCTURE
ENGINEERING, P.C.
2703 Jones Franklin Rd, Suite 201
Cary, NC 27518
Tel [phone]
www.hiepc.com
Firm License No. C-2586
Engineering is our profession.
Service is our passion.
IMPROVEMENTS
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RALEIGH WATER
RALEIGH, NC
09
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PROJECT NO.
RAL1 801
NTS
City of Raleigh Development Approval
MD-2.0