20231455 Ver 1_Attachment-C-PlanSheets2023-08-15 90_ Submittal Progress Set_20231025

ATTACHMENT C PLAN SHEETS

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PROFESSIONAL SEAL
NC DEQ# ISSUED RECORD:
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Point Table
Point #
1
2
3
4
5
6
7
8
9
10
11
Northing
799209.0293
799218.7872
799228.6595
799403.8362
799597.7706
799717.2585
799721.9635
799663.1055
799590.1762
799688.7821
799869.3318
Easting
2428051.7884
2428255.3499
2428450.8907
2428429.5431
2430302.8527
2430783.2977
2431176.8927
2431632.7225
2431669.0511
2432466.5402
2433110.0855
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NC LICENSE NO.F-0374
JLE
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AUG. 2023
20200731.00.RA
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JLE
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AUG. 2023
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NC LICENSE NO.F-0374
JLE
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AUG. 2023
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AUG. 2023
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GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCG01 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 NCG01 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.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the
techniques in the table below:
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.
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.
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.
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.
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.
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.
SECTION E: GROUND STABILIZATION
Required Ground Stabilization Timeframes
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.
Site Area Description Timeframe variations
-7 days for perimeter dikes, swales,
ditches, perimeter slopes and HQW Zones
-10 days for Falls Lake Watershed unless
there is zero slope
Stabilize within this
many calendar
days after ceasing
land disturbance
7
7
7
14
None
None
(a)Perimeter dikes,
swales, ditches, and
perimeter slopes
(b)High Quality Water
(HQW) Zones
(c)Slopes steeper than
3:1
If slopes are 10' or less in length and are
not steeper than 2:1, 14 days are
allowed
(d)Slopes 3:1 to 4:1
(e)Areas with slopes
flatter than 4:1 14
-7 days for slopes greater than 50' in
length and with slopes steeper than 4:1
-7 days for perimeter dikes, swales,
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
NCG01 SELF-INSPECTION, RECORDKEEPING AND REPORTING
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.
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:
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
·They are within 100 feet of surface waters (regardless of volume).
(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].
NCG01 GROUND STABILIZATION AND MATERIALS HANDLING
EFFECTIVE: 04/01/19
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.