SW3240305_Plansheet - Misc. Detail_20240604

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GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH EQUIPMENT AND VEHICLE MAINTENANCE CONCRETE WASHOUTS - 029501co
THE NCG01 CONSTRUCTION GENERAL PERMIT 1. Maintain vehicles and equipment to prevent discharge of fluids. 1. Do not discharge concrete or cement slurryfrom the site. r �''."9' •FNGINEE` 'c`',�`'
Implementing the details and specifications on this plan sheet will result in the construction '%,F�E� ;�o�V\;,,,•``
2. Provide drip pans under any stored equipment. 2. Dispose of, or recycle settled, hardened concrete residue in accordance with local
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 and state solid waste regulations and at an approved facility. 12/12/2023
sections of the NCG01 Construction General Permit (Sections E and F, respectively). TheED
project. 3. Manage washout from mortar mixers in accordance with the above item and in o o
A permittee shall comply with the Erosion and Sediment Control plan approved by the 0 0 0 > w
delegated authority having jurisdiction. All details and specifications shown on this sheet 4. Collect all spent fluids, store in separate containers and properly dispose as addition place the mixer and associated materials on impervious barrier and within Q o
may not apply depending on site conditions and the delegated authority having jurisdiction. hazardous waste (recycle when possible). lot perimeter silt fence. m m m >-
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5. Remove leaking vehicles and construction equipment from service until the problem 4. Install temporary concrete washouts per local requirements, where applicable. If an
SECTION E: GROUND STABILIZATION has been corrected. alternate method or product is to be used, contact your approval authority for
Re uired Ground Stabilization Timeframes 6. Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products review and approval. If local standard details are not available, use one of the two 0
q to a recycling or disposal center that handles these materials. types of temporary concrete washouts provided on this detail. Q o
Stabilize within this 5. Do not use concrete washouts for dewatering or storing defective curb or sidewalk wLU .
many calendar Timeframe variations sections. Stormwater accumulated within the washout may not be um ed into or om
Site Area Description days after ceasing LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE Y pumped a<
y g discharged to the storm drain system or receiving surface waters. Liquid waste mustUJ
land disturbance 1. Never bury or burn waste. Place litter and debris in approved waste containers. be pumped out and removed from project. °
(a) Perimeter dikes, 2. Provide a sufficient number and size of waste containers (e.g dumpster, trash 6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it
swales, ditches, and 7 None o W O
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receptacle) on site to contain construction and domestic wastes. can be shown that no other alternatives are reasonably available. At a minimum, Y
perimeter slopes 3. Locate waste containers at least 50 feet away from storm drain inlets and surface install protection of storm drain inlet(s) closest to the washout which could receive w
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(b) High Quality Water waters unless no other alternatives are reasonably available. spills or overflow. Y Ww
None
(HQW) Zones 7 4. Locate waste containers on areas that do not receive substantial amounts of runoff 7. Locate washouts in an easily accessible area, on level ground and install a stone o °It
If slopes es are 10' or less in len length and are UJ
from upland areas and does not drain directly to a storm drain, stream or wetland. entrance pad in front of the washout. Additional controls may be required by the ? � � o
(c) Slopes steeper than p g 5. Cover waste containers at the end of each workday and before storm events or approving authority. zD
7 not steeper than 2:1, 14 days are
3:1 allowed provide secondary containment. Repair or replace damaged waste containers. 8. Install at least one sign directing concrete trucks to the washout within the project o � _J 0
• . Anchor II lightweightitems in wcontainersrin im f hi h win . limits. Post si na a on the washout itself to identify this location. 0 0 0 � z�
6o to s aste du t es o ds g g Y
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-7 days for slopes greater than 50 ing g LL LL LL o -w
length and with slopes steeper than 4:1 7. Empty waste containers as needed to prevent overflow. Clean up immediately if 9. Remove leavings from the washout when at approximately 75% capacity to limit 0 0 0 Y <°
-7 days for perimeter dikes, swales,
containers overflow. overflow events. Replace the tarp, sand bags or other temporary structural
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(d) Slopes 3:1 to 4:1 14 ditches, perimeter slopes and HQW 8. Dispose waste off-site at an approved disposal facility. components when no longer functional. When utilizing alternative or proprietary o 0 o w =o
Zones 9. On business days, clean up and dispose of waste in designated waste containers. products, follow manufacturer s instructions. w ? ? Q
10. At the completion of the concrete work, remove remaining leavings and dispose of N QU_
-10 days for Falls Lake Watershed r r " z 0°
- in an approved disposal facility. Fill pit, if applicable, and stabilize any disturbance o m Q o CD
days for perimeter dikes, swales, PAINT AND OTHER LIQUID WASTE z U) Ir
caused by removal of washout. o zz
e Areas with slopes ditches, perimeter slopes and HQW Zones 1. Do not dump paint and other liquid waste into storm drains, streams or wetlands. zo
( ) p 14 -10 days for Falls Lake Watershed unless 2. Locate paint washouts at least 50 feet away from storm drain inlets and surface o coJ
flatter than 4:1 p Y
there is zero slope waters unless no other alternatives are reasonably available. 10 o 03:
Note: After the permanent cessation of construction activities, any areas with temporary 3. Contain liquid wastes in a controlled area. HERBICIDES, PESTICIDES AND RODENTICIDES �Z N QUJ
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ground stabilization shall be converted to permanent ground stabilization as soon as 4. Containment must be labeled, sized and placed appropriately for the needs of site. 1. Store and apply herbicides, pesticides and rodenticides in accordance with label zt Q 0w
restrictions. w; z �o
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 �w0 � w o 0�
activity. Temporary ground stabilization shall be maintained in a manner to render the construction sites. 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 < °°- J CD Q ~W
surface stable against accelerated erosion until permanent ground stabilization is achieved. g p C) ��� J wW
PORTABLE TOILETS accidental poisoning. o °'�Q ° C)Q
GROUND STABILIZATION SPECIFICATION 3. Do not store herbicides pesticides and rodenticides in areas where flooding is "��Z� " ° Wo
1. Install portable toilets on level ground, at least 50 feet away from storm drains, p g L� ww z =Q
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 possible or where they may spill or leak into wells, stormwater drains, ground water �� z= � _
techniques in the table below: or surface water. If a spill occurs, clean area immediatel oNSZ0 se z o �;
q offset is not attainable, provide relocation of portable toilet behind silt fence or place p Y•
C Temporary Stabilization Permanent Stabilization on a gravel pad and surround with sand bags. 4. Do not stockpile these materials onsite. �ZLoZZ `� Y o Q 2E
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Temporary grass seed covered with straw or Permanent grass seed covered with straw or Z�Cn 0 0 o n v o
2. Provide staking or anchoring of portable toilets during periods of high winds or in high ZQ�QQ
other mulches and tackifi�ers other mulches and tackifiers foot traffic areas. o= �;_= o
+ Hydroseeding Geotextile fabrics such as permanent soil HAZARDOUS AND TOXIC WASTE o o 0UJ
3. Monitor portable toilets for leaking and properly dispose of any leaked material.
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Rolled erosion control products with or reinforcement matting Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace 1. Create designated hazardous waste collection areas on-site. �Za_ZZ of
without temporarygrass seed # Hydroseeding with properly operating unit.
Appropriately.applied straw or other mulch * Shrubs or other permanent planti r)gs covere d p p Y p g 2. Place hazardous waste containers under cover or in secondary containment. I­-
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Plastic sheeting with mulch 3. Do not store hazardous chemicals, drums or bagged materials directly on the ground. o Q CU
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• Uniform and evenly distributed ground cover EARTHEN STOCKPILE MANAGEMENT � z LU
sufficient to restrain erosion 1. Show stockpile locations on plans. Locate earthen-material stockpile areas at least Q
-DStructural methods such as concrete, aspha Ito 7 50 feet away from storm drain inlets, sediment basins, perimeter sediment controls m J Z
retaining walls and surface waters unless it can be shown no other alternatives are reasonably U L 0
* Rolled erosion control predLJCts with grass seed available. o c)
2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of Z
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POLYACRYLAMIDES (PAMS) AND FLOCCULANTS five feet from the toe of stockpile. I�
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1. Select flocculants that are appropriate for the soils being exposed during 3. Provide stable stone access point when feasible. = Z ry
LU construction, selecting from the NC DWR List of Approved PAMS/Flocculants. 4. Stabilize stockpile within the timeframes provided on this sheet and in accordance Q
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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 Y O Q
3. Apply flocculants at the concentrations specified in the NC DWR List of Approved as vegetative, physical or chemical coverage techniques that will restrain accelerated Q 0 U
PAMS/Flocculants and in accordance with the manufacturer's instructions. erosion on disturbed soils for temporary or permanent control needs. m W
D 4. Provide ondin area for containment of treated Stormwater before discharging
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offsite.
5. Store flocculants in leak-proof containers that are kept under storm-resistant cover
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AS NOTED
or surrounded by secondary containment structures. J �:.P viron ntal Quality VERIFY SCALE
BAR IS ONE INCH ON
ORIGINAL DRAWING.
NCGO1 R N D STABILIZATION MATERIALS HANDLING EFFECTIVE : 04/01 /19 DATE DECEMBER 2023
PROJ D3717400
DWG C-06
SHEET 6 of 11
FILENAME: Erosion Details.dwg PLOT DATE: 12/12/2023 PLOT TIME: 11:50:59 AM