SW3181201_Plansheet C301 - Notes_20220407

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
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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
ection records must include:
Inspection
business hours)
Dail rainfall amounts.
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1 Rain gauge
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Dail Y
maintained in
If no daily rain gauge observations are made during weekend or
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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 ofthe person performingthe inspection,
hours of a rain
4. Indication of whether the measures were operating
event > 1.0 inch in
properly,
24 hours
S. 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 cfthe person performing the 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 ofvisible sediment leaving the site,
6. Description, evidence, and date of corrective actions taken.
(4) Perimeter of
At least once per
If visible 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 turbidity from the 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 reports to the appropriate Division
24 hours
Regional Office per Part III, Section C, Item (2)(a) of this permit
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 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.
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 documented in the manner
described:
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
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of the approved E&SC Plan or complete, date
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locations dimensions and relative elevations
and an sign inspection report that lists each
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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.
report to 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
In addition to the E&SC Plan documents above, the following items shall be kept on the
site
and available for agency 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 30 days. 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.
(c) All data used to complete the Notice of Intent and older inspection records shall be
maintained for a period of three years after project completion and made available
upon request. [40 CFR 122.41]
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
• The are within 100 feet of surface waters (regardless of volume).
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(a) 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.
(b) Anticipated bypasses and unanticipated bypasses.
(c) 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 Division's Emergency Response personnel at [phone], (800)
858-0368 or [phone].
Occurrence
Reporting Timeframes (After Discovery) and Other Requirements
(a) Visible sediment
• Within 24 hours, an oral or electronic 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
• Within 24 hours, an oral or electronic 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
• Within 24 hours, an oral or electronic 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 • Within 24 hours, an oral or electronic 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.
I NCGO1 SELF -INSPECTION, RECORDKEEPING AND REPORTING I EFFECTIVE: 04/01/191
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
activitybeing considered compliant with the Ground Stabilization and Materials Handling
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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
7
None
perimeter slopes
(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
7 days for perimeter dikes, swales,
(d) Slopes 3:1 to 4:1
14
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
-7 days for perimeter dikes, swales,
(e) Areas with slopes
ditches perimeter slopes and H W Zones
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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.
PLAN VIEW
INFLOW
STRUCTURE_�il
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 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 laced appropriately for the needs of site.
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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.
ONSITE CONCRETE WASHOUT
STRUCTURE WITH LINER
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BELOW GRADE WASHOUT STRUCTURE ABOVE GRADE WASHOUT STRUCTURE
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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/o capacity to limit
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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
AVERAGE AREA*
WIDTH W = L
* AREA OF BASIN WATER *
SURFACE AT TOP OF PRINCIPAL
SPILLWAY ELEVATION
CROSS-SECTION VIEW
INFLOW
STRUCTURE -\
DEWATERING
ZONE -
GEOTEXTILE FABR
POROUS BAFFLES, SEE
DETAIL 6 THIS SHEET
*MINIMUM VOLUME OF 1800 CF
PER ACRE DISTURBED
/11:11\
yz „ - �A)JL1A)
11-11
• -
FREEBOARD
6" MIN. INVERT ELEVATION
OF EMERGENCY SPILLWAY
ROPE TO
EMBANKMENT
- 2' MIN
SEDIMENT) \ \ \ Bi
STORAGE ZONE
MINIMUM LENGTH TO WIDTH RATIC2:1
MAXIMUM LENGTH TO WIDTH RATI&_1
( ) Tem ora Skimmer Basin
NCDEQ STD, 6.61
EMBANKMENT
NOTES:
1. REFER TO NCDENR
PLANNING AND DESIGN
MANUAL SECTION #6.64
FOR ADDITIONAL DESIGN
SPECIFICATIONS
REGARDING SKIMMER
SEDIMENT BASINS.
2. MINIMUM SURFACE AREA
REQUIRED IS 325 SO FT
PER CFS Q10.
3. USE FOR DRAINAGE AREA
NOT EXCEEDING 10 (TEN)
ACRES.
EFFECTIVE: 04/01 / 19
EROSION CONTROL NOTES:
1, 601L STABILIZATION SHALL BE ACHIEVED ON ANY AREA OF A 61TE WHERE
LAND -DISTURBING ACTIVITIES HAVE TEMPORARILY OR PERMANENTLY CEASED
ACCORDING TO THE FOLLOWING SCHEDULE:
1A. ALL PERIMETER DIKES, SWALES, PERIMETER SLOPES AND ALL SLOPES STEEPER
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,
1 B, ALL OTHER DISTURBED AREAS SHALL BE PROVIDED TEMPORARY OR PERMANENT
STABILIZATION WITH GROUND COVER AS SOON AS PRACTICABLE BUT IN ANY
EVENT WITHIN 14 CALENDAR DAYS FROM THE LAST AND -DISTURBING ACTIVITY.
1C. CONDITION6 - IN MEETING THE STABILIZATION REQUIREMENTS ABOVE, THE
FOLLOWING CONDITIONS OR EXEMPTIONS SHALL APPLY:
1 D. EXTENSIONS OF TIME MAY BE APPROVED BY THE PERMITTING AUTHORITY BASED
ON WEATHER OR OTHER 61TE-6PECIFIC CONDITION6 THAT MAKE COMPLIANCE
IMPRACTICABLE.
1 E. ALL SLOPES 50' IN LENGTH OR GREATER SHALL APPLY THE GROUND COVER
WITHIN 7 DAYS EXCEPT WHEN THE SLOPE IS FLATTER THAN 4:1. SLOPES LESS
THAN 50' SHALL APPLY GROUND COVER WITHIN 14 DAYS EXCEPT WHEN
SLOPES ARE STEEPER THAN 3:1, THE 7 DAY REQUIREMENT APPLIES.
1 F. ANY ELOPED AREA FLATTER THAN 4:1 SHALL BE EXEMPT FROM THE 7 DAY
GROUND COVER REQUIREMENT,
1G, SLOPES 10' OR LESS IN LENGTH SHALL BE EXEMPT FROM THE 7 DAY
GROUND COVER REQUIREMENT EXCEPT WHEN THE SLOPE 16 STEEPER THAN 2:1.
1 H. ATHOUGH STABILIZATION 15 USUALLY SPECIFIED AS GROUND COVER, OTHER
ETHODS, SUCH AS CHEMICAL STABILIZATION, MAY BE ALLOWED ON A
CASE -BY -CASE BASIS,
11. FOR PORTIONS OF PROJECTS WITHIN THE SEDIMENT CONTROL
COMMISSION -DEFINED HIGH QUALITY WATER ZONE (15A NCAC 04A. 0105),
STABILIZATION WITH GROUND COVER SHALL BE ACHIEVED AS SOON AS
PRACTICABLE BUT IN ANY EVENT ON ALL AREAS OF THE SITE WITHIN 7
CALENDAR DAYS FROM THE [AST LAND -DISTURBING ACT.
1J. ADDITIONAL MEASURES TO CONTROL EROSION AND SEDIMENT MAY BE REQUIRED
BY A REPRESENTATIVE OF NCDEQ STAFF. ANY LAND -DISTURBING ACTIVITY >1
ACRE REQUIRES COMPLIANCE WITH ALL CONDITIONS OF THE GENERAL PERMIT
TO DISCHARGE STORM WATER UNDER THE NATIONAL POLLUTANT DISCHARGE
ELIMINATION SYSTEM (PERMIT NO.NCGO10000). ANY PERMIT NONCOMPLIANCE 15
A VIOLATION OF THE CLEAN WATER ACT AND MAY REQUIRE ENFORCEMENT
ACTION BY NCDEQ.
2. DISTURBED AREAS DRAINING GREATER THAN ONE ACRE MUST HAVE AN EROSION
CONTROL MEASURE THAT DRAINS FROM THE WATER SURFACE ELEVATION,
MAINTENANCE PLAN:
1. ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CHECKED FOR STABILITY
AND OPERATION FOLLOWING EVERY RUNOFF -PRODUCING RAINFALL, BUT IN NO CASE
LE66 THAN ONCE EVERY WEEK. ANY NEEDED REPAIRS WILL BE MADE IMMEDIATELY
TO MAINTAIN ALL PRACTICES AS DESIGN.
2. SEDIMENT WILL BE REMOVED FROM THE TEMPORARY SEDIMENT TRAPS WHEN
STORAGE CAPACITY HAS BEEN APPROXIMATELY 50% FILLED, GRAVEL WILL BE
CLEANED OR REPLACED WHEN THE SEDIMENT POOL NO LONGER DRAINS PROPERLY.
3. SEDIMENT WILL BE REMOVED FROM BEHIND THE SILT FENCE WHEN IT BECOMES
ABOUT 0.5 FEET DEEP AT THE FENCE.
4. THE SEDIMENT FENCE WILL BE REPAIRED AS NECESSARY TO MAINTAIN A BARRIER.
THE ENGINEER MAY DIRECT THAT ADDITIONAL SILT FENCING OR EROSION CONTROL
MATTING BE INSTALLED AT ANY TIME PRIOR TO FINAL ACCEPTANCE.
5, ALL EROSION AND SEDIMENT CONTROL DEVICES SHALL BE INSTALLED IN
ACCORDANCE WITH THE DETAILS INCLUDED IN THESE PLANS UNLESS OTHERWISE
DIRECTED BY THE ENGINEER IN WRITING,
6. ALL EROSION AND SEDIMENT CONTROL MEA6URE5 SHALL BE REMOVED ONCE THE
ENTIRE SITE 15 STABILIZED.
7, CONTACT PERSON RESPONSIBLE FOR EROSION CONTROL MAINTENANCE:
(GENERAL CONTRACTOR)
SELF INSPECTION REQUIREMENTS
1, ALL TEMPORARY EROSION AND SEDIMENTATION CONTROL MEASURES, INCLUDING
SEDIMENTATION CONTROL BASINS, SEDIMENTATION TRAPS, SEDIMENTATION PONDS,
ROCK DAMS, TEMPORARY DIVERSIONS, TEMPORARY SLOPE DRAINS, ROCK CHECK
DAMS, SEDIMENT FENCE OR BARRIERS, ALL FORMS OF INLET PROTECTION, STORM
DRAINAGE FACILITIES, ENERGY DISSIPATERS, STABILIZATION METHODS OF OPEN
CHANNELS AND GROUND COVER SHALL BE INSPECTED BY THE OWNER OR
DESIGNATED REPRESENTATIVE.
2. THE DIMENSIONS OF THE BASINS SHALL BE CHECKED AND COMPARED TO THE
DIMENSIONS ON THE APPROVED SEDIMENTATION AND EROSION CONTROL PLAN.
NOTIFY BENESCH IF THE DIMENSIONS OF ANY OF THE EROSION CONTROL
MEASURES DEVIATE FROM THE PLANS,
3. A • SELF_ INSPECTION REPORT FORM FOR LAND DISTURBING ACTIVITY' AS REQUIRED
BY NCG6 113A-54.1) IS PROVIDED WITHIN THE SPECS. ALTERNATIVELY THE
OWNER OR DESIGNATED REPRESENTATIVE COMPLETING THE INSPECTIONS MAY MAKE
NOTATIONS ON THE COPY OF THE APPROVED EROSION AND SEDIMENTATION
CONTROL PLAN THAT 15 KEPT ON THE PROJECT SITE, DOCUMENTATION SHALL BE
ACCOMPLISHED BY INITIALING AND DATING EACH MEASURE OR PRACTICE SHOWN ON
A COPY OE THE APPROVED EROSION AND SEDIMENTATION CONTROL PLAN OR BY
COMPLETING, DATING AND SIGNING AN INSPECTION REPORT THAT LISTS EACH
MEASURE, PRACTICE OR DEVICE SHOWN ON THE APPROVED EROSION AND
SEDIMENTATION CONTROL PLAN. ALL DOCUMENTATION AND/OR REPORTS OF
INSPECTIONS MUST BE MADE AVAILABLE ON THE SITE,
4, THE 6ELF-INSPECTION REPORT 16 TO BE COMPLETED AFTER EACH PHASE OF THE
APPROVED EROSION AND SEDIMENTATION CONTROL PLAN 16 COMPLETE. THESE
PHASES APPLY FOR THIS PROJECT:
4.1. INSTALLATION OF PERIMETER EROSION AND SEDIMENT CONTROL MEASURES;
4.2. CLEARING AND GRUBBING OF EXISTING GROUND COVER;
4.3. COMPLETION OF ANY PHASE OF GRADING OF SLOPES OR FILLS;
4.4. INSTALLATION OF STORM DRAINAGE FACILITIES;
4.5. COMPLETION OF CONSTRUCTION OR DEVELOPMENT,
4.6. ESTABLISHMENT OF PERMANENT GROUND COVER SUFFICIENT TO RESTRAIN
EROSION,
3, REQUIRED ARMY CORPS 404 PERMIT AND WATER QUALITY 401 CERTIFICATION MUST
BE OBTAINED FOR STREAM DISTURBANCES OVER 150 LINEAR FEET.
4. ANY BORROW OR WASTE MATERIAL SHALL BE TAKEN PLACED ON A SITE THAT HAS
AN ACTIVE APPROVED GRADING PERMIT. IF THIS 16 NOT OBTAINABLE, THEN
CONTRACTOR MAY SUBMIT PLAN FOR APPROVAL TO NCDEQ PRIOR TO ANY
OFF -SITE BORROW/WASTE AREAS BEING DENUDED AND ANY GRADING OPERATIONS
STARTING ON THIS SITE.
5. ANY GRADING BEYOND THE DENUDED LIMITS SHOWN ON THE PLAN IS A VIOLATION
OF THE NCDEQ EROSION CONTROL ORDINANCE AND IS SUBJECT TO A FINE.
6. GRADING MORE THAN ONE ACRE WITHOUT AN APPROVED EROSION CONTROL PLAN
IS A VIOLATION OF THE NCDEQ EROSION CONTROL ORDINANCE AND IS SUBJECT TO
A FINE.
7. ANY AND ALL SITE FINES IMP06ED BY NCDEQ OR ANY OTHER GOVERNING AGENCY
SHALL BE PAID BY THE GRADING CONTRACTOR,
8. SLOPES SHALL BE GRADED NO STEEPER THAN 2:1. FILL SLOPES GREATER THAN
10' REQUIRE ADEQUATE TERRACING.
9, TOTAL DENUDED AREA: 4.96 AC,
10. SOIL TYPES: BaD, ChA, KkI3, MeA, Ud
11. NAME OF RECEIVING WATER COURSE: MUDDY CREEK, CLASSIFICATION OF RECEIVING
WATER COURSE: C
GROUND STABILIZATION REQUIREMENTS
PURSUANT TO NCDWQ GENERAL STORMWATER PERMIT NGG-010000 FOR CONSTRUCTION
ACTIVITIES -
A, SOIL STABILIZATION SHALL BE ACHIEVED ON ANY AREA OF A SITE WHERE
LAND -DISTURBING ACTIVITIES HAVE TEMPORARILY OR PERMANENTLY CEASED
ACCORDING TO THE FOLLOWING SCHEDULE (PER THE CONSTRUCTION STORMWATER
GENERAL PERMIT NG6010000:
A.A. ALL PERIMETER DIKES, SWALES, DITCHES, PERIMETER SLOPES AND ALL SLOPES
STEEPER 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,
A. 5. ALL OTHER DISTURBED AREAS SHALL BE PROVIDED TEMPORARY OR PERMANENT
STABILIZATION WITH GROUND COVER AS SOON AS PRACTICABLE BUT IN ANY
EVENT WITHIN 14 CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACTIVITY.
A.C. CONDITIONS - IN MEETING THE STABILIZATION REQUIREMENTS ABOVE, THE
FOLLOWING CONDITIONS OR EXEMPTIONS SHALL APPLY:
A.D. EXTENSIONS OF TIME MAY BE APPROVED BY THE PERMITTING AUTHORITY BASED
ON WEATHER OR OTHER SITE -SPECIFIC CONDITIONS THAT MAKE COMPLIANCE
IMPRACTICABLE.
A.E. ALL SLOPES 50' IN LENGTH OR GREATER SHALL APPLY THE GROUND COVER
WITHIN 7 DAYS EXCEPT WHEN THE SLOPE 15 FLATTER THAN 4:1. SLOPES
LESS THAN 50' SHALL APPLY GROUND COVER WITHIN 14 DAY6 EXCEPT WHEN
SLOPES ARE STEEPER THAN 3:1, THE 7 DAY REQUIREMENT APPLIES,
A.F. ANY SLOPED AREA FLATTER THAN 4:1 SHALL BE EXEMPT FROM THE 7 DAY
GROUND COVER REQUIREMENT.
A.G. SLOPES 10' OR LE66 IN LENGTH SHALL BE EXEMPT FROM THE 7 DAY
GROUND COVER REQUIREMENT EXCEPT WHEN THE SLOPE 16 STEEPER THAN 2:1.
A.H. ALTHOUGH STABILIZATION 15 USUALLY SPECIFIED AS GROUND COVER, OTHER
METHODS, SUCH AS CHEMICAL STABILIZATION, MAY BE ALLOWED ON A
CASE -BY -CASE BASIS,
A. 1. FOR PORTIONS OF PROJECTS WITHIN THE SEDIMENT CONTROL
COMMISSION -DEFINED "HIGH QUALITY WATER ZONE" 15A NCAC 04A. 0105
STABILIZATION WITH GROUND COVER SHALL BE ACHIEVED AS SOON AS
PRACTICABLE BUT IN ANY EVENT ON ALL AREAS OF THE SITE WITHIN 7
CALENDAR DAYS FROM THE LAST LAND -DISTURBING ACT.
A.J. PORTION6 OF A 61TE THAT ARE LOWER IN ELEVATION THAN ADJACENT
DISCHARGE LOCATIONS AND ARE NOT EXPECTED TO DISCHARGE DURING
CONSTRUCTION MAY BE EXEMPT FROM THE TEMPORARY GROUND COVER
REQUIREMENTS IF IDENTIFIED ON THE APPROVED E <6C PLAN OR ADDED BY
THE PERMITTING AUTHORITY,
CONSTRUCTION SEQUENCE:
1. OBTAIN GRADING/EROSION CONTROL PLAN APPROVAL FROM NCDEQ.
2. FLAG LIMITS OF CLEARING AND PROVIDE TREE PROTECTION WHERE INDICATED.
3, HOLD A PRE -CONSTRUCTION CONFERENCE WITH THE CONTRACTOR, JOB
SUPERINTENDENT, AND EROSION CONTROL OFFICIAL.
4. INSTALL SILT FENCE, INLET PROTECTION, SEDIMENT TRAPS, DIVERSION DITCHES, TREE
PROTECTION, AND OTHER MEASURES AS SHOWN ON PLANS, CLEARING ONLY AS
NECESSARY TO INSTALL THESE DEVICES.
5, CALL FOR ON SITE INSPECTION BY INSPECTOR, WHEN APPROVED CLEARING AND
GRUBBING MAY BEGIN.
6, ROUGH GRADE SITE, STOCKPILE TOPSOIL, INSTALL DRAINAGE PIPE, INSTALL INLET
AND OUTLET PROTECTION, AND CONSTRUCT DITCHES AS SHOWN.
7. THE CONTRACTOR SHALL DILIGENTLY AND CONTINUOUSLY MAINTAIN ALL EROSION
CONTROL DEVICES AND STRUCTURES.
8. FOR PHASED EROSION CONTROL PLANS, CONTRACTOR SHALL MEET WITH EROSION
CONTROL INSPECTOR PRIOR TO COMMENCING WITH EACH PHASE OF EROSION
CONTROL MEASURES.
9. STABILIZE 61TE AS AREAS ARE BROUGHT TO FINISHED GRADE.
10. INSTALL ANY ADDITIONAL SILT FENCE THAT MAY NOT BE SHOWN BUT MAY BE
NEEDED,
11. FINE GRADE SITE, PLACE TOPSOIL, IMMEDIATELY PROVIDE PERMANENT VEGETATION
AS SHOWN IN THE SPECIFICATIONS OR ON THE DRAWINGS.
12. COORDINATE WITH EROSION CONTROL INSPECTOR PRIOR TO REMOVAL OF EROSION
CONTROL MEASURES.
ALL EROSION CONTROL MEASURES SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE
N.C. EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL,
TOTAL b STURDED AREA; ±2E95 ACRES
BASIN
DRAINAGE
AREA (AC)
DENUDED
AREA
(AC)
Q10
I(CF)
BASIN VOLUME
BASIN SURFACE AREA
CLEANOUT
H
(FEET)
Z
(FEET)
L
(FEET)
T
(FEET)
W
(FEET)
SKIMMER PIPE
DIAMETER
SKIMMER
ORIFICE
DIAMETER
BASIN BOTTOM
ELEVATION
BASIN TOP
ELEVATION
BASIN
SPILLWAY
ELEVATION
REQ'D
PROV.
REQ'D
PROV.
DEPTH
H/2
I
(SF)
(SF)
1
2.07
2.07
8.41
3,726
5,897
2,734
2,809
1.25
2.5
5
10
1.5
5
3.00
1.50
496.00
501.00
499.50
EMERGENCY SPILLWAY
(SEE NOTE #2 & 19)
W
5'MIN MBANKMENT
r- T=1.5 MIN
Z=5' MAX
MERGENCY
SPILLWAY
\TWO WOODEN NTI-SEEP
STAKES TO ALIGN COLLAR
\ SKIMMER
15" DEEP HOLE WITH
BALLAST STONE BOTTOM
GENERAL NOTES:
1. AREA UNDER EMBANKMENT SHALL BE CLEARED, GRUBBED, AND STRIPPED OF ANY VEGETATION AND
ROOT MAT. THE POOL AREA SHALL BE CLEARED.
2. THE FILL MATERIAL FOR THE EMBANKMENT SHALL BE FREE OF ROOTS OR OTHER WOODY VEGETATION
AS WELL AS OVERSIZED STONES, ROCKS, ORGANIC MATERIAL OR OTHER OBJECTIONABLE MATERIAL.
THE EMBANKMENT SHALL BE COMPACTED BY TRAVERSING WITH EQUIPMENT WHILE BEING
CONSTRUCTED. ALL SPILLWAYS SHOULD BE LINED WITH FABRIC OR RIP -RAP.
3. EMBANKMENT SHALL BE COMPACTED TO 95% OF STANDARD PROCTOR MAXIMUM DRY DENSITY AT +/-
2% OPTIMUM MOISTURE CONTENT.
4. SEDIMENT SHALL BE REMOVED AND TRAP RESTORED TO ITS ORIGINAL DIMENSIONS WHEN THE
SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN DEPTH OF THE TRAP. REMOVED SEDIMENT
SHALL BE DEPOSITED IN A SUITABLE AREA IN SUCH A MANNER THAT IT WILL NOT ERODE.
5. THE TRAP SHALL BE INSPECTED AFTER EACH RAIN AND REPAIRS MADE AS NECESSARY.
6. CONSTRUCTION OPERATION SHALL BE CARRIED OUT IN SUCH A MANNER THAT EROSION AND WATER
POLLUTION IS MINIMIZED.
7. ALL CUT AND FILL SLOPES SHALL BE 2:1 OR FLATTER, UNLESS CERTIFIED BY REGISTERED
GEOTECHICAL ENGINEER.
8. SEDIMENT BASIN EMBANKMENTS SHOULD BE PROVIDED WITH EROSION CONTROL AND STABILIZATION.
9. STORAGE AREA IS SHOWN AS RECTANGULAR FOR ILLUSTRATIVE PURPOSES ONLY, AND MAY BE
CONSTRUCTED IN ANY SHAPE PROVIDED THE MINIMUM STORAGE VOLUME AND SURFACE AREA
REQUIREMENTS ARE MET. THE BASIN SHOULD ALSO BE ORIENTED SUCH THAT THE FILTER AND THE
MAIN FLOW OF WATER AND SEDIMENT ARE ON OPPOSITE ENDS ON THE LONGER BASIN DIMENSIONS.
10. REQUIRED STORAGE IS 1800 CUBIC FEET OF STORAGE VOLUME PER ACRES OF DRAINAGE AREA. IF
CLEAR WATER FROM UNDISTURBED AREAS IN DRAINAGE BASIN ARE TAKEN AROUND OR THROUGH THE
DENUDED AREA BY NON EROSIVE MEASURES, THEN BASINS MAY BE SIZED BY DENUDED ACRES.
RECOMMENDED STORAGE IS 1800 CUBIC FEET OF STORAGE PER ACRE OF DENUDED AREA.
11. THE WIDTH OF THE SPILLWAY IS TO BE BASED ON A 10-YEAR STORM.
12. WHENEVER TOPOGRAPHY ALLOWS, THE BASIN LENGTH SHOULD BE TWICE (2X) THE BASIN WIDTH, TO
ALLOW FOR PARTICULATE SETTLING. BAFFLES SHOULD BE PROVIDED IN THE BASIN WHERE THE
LENGTH IS LESS THAN TWICE THE WIDTH.
13. CLEANOUT STAKES SHALL BE PLACED IN ALL SEDIMENT BASINS AT THE LOW POINT IN THE BASIN.
THE STAKES SHALL BE MARKED SHOWING THE HALF FULL, CLEANOUT POINT, OF THE BASIN.
14. SAFETY FENCING 3' HIGH SHOULD BE PLACED AROUND ALL SEDIMENT BASINS.
15. FOR DESIGN OF RISER TYPE SEDIMENT BASINS REFER TO THE NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT, HEALTH, AND NATURAL RESOURCES EROSION AND SEDIMENT CONTROL PLANNING AND
DESIGN MANUAL.
16. FOR SLOPES GREATER THAN 10' IN LENGTH, SILT FENCE AT THE TOE OF THE SLOPE AND SLOPE
TERRACING WILL BE REQUIRED.
17. THE BERM ON SEDIMENT BASINS SHALL BE SEEDED ONCE FINAL GRADE HAS BEEN REACHED. THE
SILT FENCE MAY BE REMOVED IF PERMISSION HAS BEEN GRANTED BY THE CITY/COUNTY LAND
DEVELOPMENT INSPECTOR AFTER THE GRASS HAS GERMINATED AND STABLE GROUND HAS BEEN
ESTABLISHED.
18. WASHED STONE AND WIRE BACKING SHALL BE USED WITH SILT FENCE WHENEVER SILT FENCE IS
PLACED AT THE TOE OF A SLOPE GREATER THAN 10' HIGH OR ALONG ANY CHANNEL OR WATER
COURSE WHERE 50' OF BUFFER IS NOT PROVIDED.
19. LINE SPILLWAY TO TOE OF DOWNSTREAM SLOPE WOVEN GEOTEXTILE FABRIC (US 200 OR APPROVED
EQUAL). ANCHOR WITH 1" X12" STAPLES AND OVERLAP JOINTS 18" MIN. IN FLOW DIRECTION IF
MULTIPLE SECTIONS OF FABRIC.
PVC El`
PVC
CLEAN WATER _\
RUNOFF
11 NATURAL GRADE
III 1111 11- -
_, 141 II II I II II I I -I I III I I-
(::
2 Clean Water Diversion Swale
N.T.S.
SIL
COMPACTED
2' MIN I, 6' TYP. //,---- BERM
DISTURBED
AREA
-I I-
I I -I 11-1 I I-
I -I I -I I -III -I -
A I I _ 2' MIN- ' 11 III, 111-
11 III- II
NORTH AMERICAN GREEN SC150
EROSION CONTROL FABRIC
SECTION
HARDWARE CLOTH
u
12 OH 5 OR 57
WASHED STONE_\
�i� '9
Opp
12"-16»
GROUND LINE 0T
CII T f7f7Nlr1f7
(:
3 Stone Silt Fence Outlet
N.T.S.
;ARM ASSEMBLY
"C"ENCLOSURE
0
�
c --WATER ENTRY UNIT
END VIEW FRONT VIEW
SCHEMATIC OF SKIMMER TAKEN FROM PENNSYLVANIA EROSION AND SEDIMENT POLLUTION CONTROL
MANUAL, MARCH 2O00.
CR055 SECTION
CE
TOP VIEW
Min=ig7\rail
FRONT VIEW HARDWARE CLOTH
(4" MESH OPENINGS)
LEGEND
EIP
EXISTING SIGN
EXISTING IRON PIN
- - - - - -
EXISTING CURB AND GUTTER
PROPOSED CURB AND GUTTER
_(�
EXISTING LIGHT POLE
--
PROPERTY LINE
EXISTING UTILITY POLE
-x-x-x-
EXISTING FENCE
R/W
RIGHT-OF-WAY
UGE
EXISTING UNDERGROUND ELECTRIC LINE
OEXISTING
TREE TO REMAIN
OH/U-EXISTING
OVERHEAD UTILITY LINE
EXISTING FIRE HYDRANT
T
EXISTING UNDERGROUND TELEPHONE LINE
SS
EXISTING SANITARY SEWER LINE
om
EXISTING WATER VALVE
W
EXISTING WATER LINE
0WM
EXISTING WATER METER
G
EXISTING GAS LINE
(S)
EXISTING SEWER MANHOLE
i'XX
EXISTING CONTOUR LINE
(D
EXISTING STORM MANHOLE
MH
XXX
PROPOSED CONTOUR LINE
•
PROPOSED STORM MANHOLE
-
EXISTING STORM DRAINAGE PIPE
❑
EXISTING DRAINAGE STRUCTURE
PROPOSED STORM DRAINAGE PIPE
DI
E 40
0
PROPOSED DRAINAGE STRUCTURE
* * Ak
TEMPORARY SILT FENCE
.0TEMPORARY
SILT SACK
�
STONE OPENING IN TEMPORARY SILT FENCE
TEMPORARY INLET PROTECTION
TEMPORARY TREE PROTECTION BARRICADE
-
LIMITS OF GRADING/CONSTRUCTION
TEMPORARY ROCK CHECK DAM
���,.
LINED GRASS SWALE
TEMPORARY FILTER BERM BASIN
���11 _
GRASS SWALE
TEMPORARY GRAVEL ENTRANCE
00' '
TEMPORARY DIVERSION SWALE
0
OUTLET PROTECTION
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Seals:
PIRELMNARY
NOT FOR
Corp. NC License: F-1320
Project No: 170001ss
Date: 03.07.22
Revisions:
Sheet Title:
OVERALL PRE -
DEVELOPMENT
EROSION
CONTROL PLAN
_ JIICCE IVV.
Know what's below. 150 0 7I 1so I
Call before you dig. 300
SCALE: 1"=150' C30 I