SW5200701_Plansheet - Misc. Detail_20211026 (5)

GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
EQUIPMENT AND VEHICLE MAINTENANCE
THE NCG01 CONSTRUCTION GENERAL PERMIT
1.Maintain vehicles and equipment to prevent discharge of fluids.
Implementing the details and specifications on this plan sheet will result in the construction
2.Provide drip pans under any stored equipment.
activity being considered compliant with the Ground Stabilization and Materials Handling
3.Identify leaks and repair as soon as feasible, or remove leaking equipment from the
sections of the NCG01 Construction General Permit (Sections E and F, respectively). The
project.
permittee shall comply with the Erosion and Sediment Control plan approved by the
4.Collect all spent fluids, store in separate containers and properly dispose as
delegated authority having jurisdiction. All details and specifications shown on this sheet
hazardous waste (recycle when possible).
may not apply depending on site conditions and the delegated authority having jurisdiction.
5.Remove leaking vehicles and construction equipment from service until the problem
has been corrected.
SECTION E: GROUND STABILIZATION
6.Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products
Required Ground Stabilization Timeframes
to a recycling or disposal center that handles these materials.
Stabilize within this
many calendar
Timeframe variations
Site Area Description
days after ceasing
LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
land disturbance
1.Never bury or burn waste. Place litter and debris in approved waste containers.
(a)Perimeter dikes,
2.Provide a sufficient number and size of waste containers (e.g dumpster, trash
CONCRETE WASHOUTS
swales, ditches, andNone
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receptacle) on site to contain construction and domestic wastes.
1.Do not discharge concrete or cement slurry from the site.
perimeter slopes
3.Locate waste containers at least 50 feet away from storm drain inlets and surface
2.Dispose of, or recycle settled, hardened concrete residue in accordance with local
waters unless no other alternatives are reasonably available.
(b)High Quality Water
and state solid waste regulations and at an approved facility.
None
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4.Locate waste containers on areas that do not receive substantial amounts of runoff
(HQW) Zones
3.Manage washout from mortar mixers in accordance with the above item and in
from upland areas and does not drain directly to a storm drain, stream or wetland.
addition place the mixer and associated materials on impervious barrier and within
If slopes are 10' or less in length and are
(c)Slopes steeper than
5.Cover waste containers at the end of each workday and before storm events or
lot perimeter silt fence.
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not steeper than 2:1, 14 days are
3:1
provide secondary containment. Repair or replace damaged waste containers.
4.Install temporary concrete washouts per local requirements, where applicable. If an
allowed
6.Anchor all lightweight items in waste containers during times of high winds.
alternate method or product is to be used, contact your approval authority for
-7 days for slopes greater than 50' in
review and approval. If local standard details are not available, use one of the two
7.Empty waste containers as needed to prevent overflow. Clean up immediately if
length and with slopes steeper than 4:1
types of temporary concrete washouts provided on this detail.
containers overflow.
-7 days for perimeter dikes, swales,
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5.Do not use concrete washouts for dewatering or storing defective curb or sidewalk
(d)Slopes 3:1 to 4:1
8.Dispose waste off-site at an approved disposal facility.
ditches, perimeter slopes and HQW
sections. Stormwater accumulated within the washout may not be pumped into or
Zones
9.On business days, clean up and dispose of waste in designated waste containers.
discharged to the storm drain system or receiving surface waters. Liquid waste must
-10 days for Falls Lake Watershed
be pumped out and removed from project.
PAINT AND OTHER LIQUID WASTE
-7 days for perimeter dikes, swales,
6.Locate washouts at least 50 feet from storm drain inlets and surface waters unless it
ditches, perimeter slopes and HQW Zones
1.Do not dump paint and other liquid waste into storm drains, streams or wetlands.
(e)Areas with slopes
can be shown that no other alternatives are reasonably available. At a minimum,
14-10 days for Falls Lake Watershed unless
2.Locate paint washouts at least 50 feet away from storm drain inlets and surface
flatter than 4:1
install protection of storm drain inlet(s) closest to the washout which could receive
there is zero slope
waters unless no other alternatives are reasonably available.
spills or overflow.
3.Contain liquid wastes in a controlled area.
Note:After the permanent cessation of construction activities, any areas with temporary
7.Locate washouts in an easily accessible area, on level ground and install a stone
4.Containment must be labeled, sized and placed appropriately for the needs of site.
ground stabilization shall be converted to permanent ground stabilization as soon as
entrance pad in front of the washout. Additional controls may be required by the
practicable but in no case longer than 90 calendar days after the last land disturbing
5.Prevent the discharge of soaps, solvents, detergents and other liquid wastes from
approving authority.
activity. Temporary ground stabilization shall be maintained in a manner to render the
construction sites.
8.Install at least one sign directing concrete trucks to the washout within the project
surface stable against accelerated erosion until permanent ground stabilization is achieved.
limits. Post signage on the washout itself to identify this location.
PORTABLE TOILETS
9.Remove leavings from the washout when at approximately 75% capacity to limit
GROUND STABILIZATION SPECIFICATION
1.Install portable toilets on level ground, at least 50 feet away from storm drains,
overflow events. Replace the tarp, sand bags or other temporary structural
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the
streams or wetlands unless there is no alternative reasonably available. If 50 foot
components when no longer functional. When utilizing alternative or proprietary
techniques in the table below:
offset is not attainable, provide relocation of portable toilet behind silt fence or place
products, follow manufacturer's instructions.
on a gravel pad and surround with sand bags.
10.At the completion of the concrete work, remove remaining leavings and dispose of
2.Provide staking or anchoring of portable toilets during periods of high winds or in high
in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance
foot traffic areas.
caused by removal of washout.
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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.
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HERBICIDES, PESTICIDES AND RODENTICIDES
1.Store and apply herbicides, pesticides and rodenticides in accordance with label
EARTHEN STOCKPILE MANAGEMENT
restrictions.
1.Show stockpile locations on plans. Locate earthen-material stockpile areas at least
2.Store herbicides, pesticides and rodenticides in their original containers with the
50 feet away from storm drain inlets, sediment basins, perimeter sediment controls
label, which lists directions for use, ingredients and first aid steps in case of
and surface waters unless it can be shown no other alternatives are reasonably
accidental poisoning.
available.
3.Do not store herbicides, pesticides and rodenticides in areas where flooding is
2.Protect stockpile with silt fence installed along toe of slope with a minimum offset of
possible or where they may spill or leak into wells, stormwater drains, ground water
POLYACRYLAMIDES (PAMS) AND FLOCCULANTS
five feet from the toe of stockpile.
or surface water. If a spill occurs, clean area immediately.
1.Select flocculants that are appropriate for the soils being exposed during
3.Provide stable stone access point when feasible.
4.Do not stockpile these materials onsite.
construction, selecting from theNC DWR List of Approved PAMS/Flocculants.
4.Stabilize stockpile within the timeframes provided on this sheet and in accordance
2.Apply flocculants at or before the inlets to Erosion and Sediment Control Measures.
with the approved plan and any additional requirements. Soil stabilization is defined
as vegetative, physical or chemical coverage techniques that will restrain accelerated
3.Apply flocculants at the concentrations specified in theNC DWR List of Approved
HAZARDOUS AND TOXIC WASTE
erosion on disturbed soils for temporary or permanent control needs.
PAMS/Flocculants and in accordance with the manufacturer's instructions.
1.Create designated hazardous waste collection areas on-site.
4.Provide ponding area for containment of treated Stormwater before discharging
2.Place hazardous waste containers under cover or in secondary containment.
offsite.
3.Do not store hazardous chemicals, drums or bagged materials directly on the ground.
5.Store flocculants in leak-proof containers that are kept under storm-resistant cover
or surrounded by secondary containment structures.
EFFECTIVE: 04/01/19
NCG01 GROUND STABILIZATION AND MATERIALS HANDLING
E.16