SW6240101_Plansheet - Misc. Detail_20240408 (2)

DocuSign Envelope ID: D971C5E24C07-4601-9808-91`845221B8AE
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"STRAW W NET" EXCELSIOR \ j 'Flo
TEMP. SWALE MATTING SWALE `c ` ��yy
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LINER AS SHOWN LINER AS SHOWN �• w
S' IMMEDIATELY UPON
GRADING
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ONSITE CONCRETE WASHOUT s, 1 1 S' Gj S' Gj E� 1�� V3I. w
GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH THE NCG01 STRUCTURE WITH LINER 2.5' 2.5' 2.5' 2.5' �i �` •.. o' �� �_
1 1 3 3 1 1 1 1 1 1 �i ORFFE
CONSTRUCTION GENERAL PERMIT EQUIPMENT AND VEHICLE MAINTENANCE A w � N �
Implementing the details and specifications on this Ian sheet will result in the construction activity being ° ° '"°"°";"°d"' o o °" 3 3 3 3 3 3 3 �Rl
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p g p p Y g 1. Maintain vehicles and equipment to prevent discharge of fluids. o o ,• o o lr RIP RAP d50=9",
considered compliant with the Ground Stabilization and Materials Handling sections of the NCG01 Construction o =* a 4/8/2024
2. Provide drip pans under an stored equipment.ment. ,.., '"°"°` o 0 oli "' MIN. DEPTH=24"
p p Y q p o o P RAP d50=12", o
General Permit(Sections E and F,respectively). The permittee shall comply with the Erosion and Sediment 0 0 0 0 0 o SEED PER FILTER FABRIC SEED PER SEED PER
3. Identify leaks and repair as soon as feasible,or remove leaking equipment from the project. o 0 C MIN. DEPTH=30" 0
Control plan approved by the delegated authority having jurisdiction.All details and specifications shown on this A PROJECT BENEATH RIP RAP PROJECT PROJECT
4. Collect all spent fluids,store in separate containers and properly dispose as hazardous waste(recycle FILTER FABRIC
sheet may not apply depending on site conditions and the delegated authority having jurisdiction. p p p p Y p ( Y , ,� SPECS SPECS SPECS �
when possible). rx. SECIONAA amp' ■� BENEATH RIP RAP �OTHE
^ •� ��" .0 K. �" m PERMANENT SWALE "A" PERMANENT SWALE "B" PERMANENT SWALE "C" PERMANENT SWALE "D' PERMANENT SWALE "E" SOON AC7• 2
SECTION E:GROUND STABILIZATION 5. Remove leaking vehicles and construction equipment from service until the problem has been corrected. I I wemLvmFsn•enrmermm �G �v
L 11E WfAER msart sn•CNcs•wL rE '�' mu•[mfYME ioa•cwi°rc••/,
6. Bring used fuels,lubricants,coolants,hydraulic fluids and other petroleum products to a recycling or "'"r"'11=16 m"°""'°°""°�•` "YY 1OE6 °� NTS NTS NTS LET-SANTS �o� o
61E 81•AAIS VM011:
aw•art Ms•ur mucmc�s m c
Required Ground Stabilization Timeframes I� Leao�ewxdrt%wrTMr�emewirr •rwrWwLo•msauaxmsa� 2 � �
disposal center that handles these materials. •°°"" °"�°"• �` Z)Q
Stabilize within this u' 0 o i'
many calendar days BELOW GRADE WASHOUT STRUCTURE ABOVE GRADE WASHWT STRUCTURE ROADSIDE DITCH CALCULATION TABLE �- o
Site Area Description Timeframe variations o mmw2 �m oI
after ceasing land STREET STA C I A Q1 O(CFS) SWALE SLOPE n NORMAL DEPTH VELOCITY SHEAR STRESS SWALE TYPE SHEAR STRESS �� .§
disturbance LITTER,BUILDING MATERIAL AND LAND CLEARING WASTE (IN/HR) (AC.) =CIA (%) (FT) (FT/S) REQUIRED (PSF) PROVIDED (PSF) `� �' I 6;
(a) Perimeter dikes,swales, 1. Never bury or burn waste. Place litter and debris in approved waste containers. Q A 0+00 - 1+25L 0.5 7.2 3.0 10.8 4.55 0.057 1.1 3.5 3.0 B 3.00 �� �30 m 2^ 6
ditches,and perimeter 7 None 2. Provide a sufficient number and size of waste containers(e.g dumpster,trash receptacle)on site to Q2 A 0+00 - 1+25R 0.5 7.2 2.1 7.6 4.55 0.057 1.0 3.2 2.8 B 3.00 llV
slopes contain construction and domestic wastes.
O3 A 1+25 - 2+50L 0.5 7.2 2.9 10.4 0.93 0.03 1.2 3.1 0.7 A 1.45 M
(b) High Quality Water(HQ ) 3. Locate waste containers at least 50 feet away from storm drain inlets and surface waters unless no other ® A 1+25 - 2+5CR 0.5 7.2 1.2 4.3 0.93 0.03 0.8 2.5 0.5 A 1.45 6
Zones 7 None alternatives are reasonably available.
O5 A 2+50 - 4+50L 0.5 7.2 0.2 0.7 2.67 0.03 0.4 2.3 0.7 A 1.45 N
If slopes are 10'or less in length and are 4. Locate waste containers on areas that do not receive substantial amounts of runoff from upland areas and sO A 2+50 - 4+50R 0.5 7.2 0.8 2.9 2.67 0.03 0.6 3.3 1.0 A 1.45
does not drain directly to a storm drain,stream or wetland.
(c) Slopes steeper than 3:1 7 not steeper than 2:1,14 days are CONCRETE WASHOUTS Q A 4+50 - 8+40L 0.5 7.2 0.3 1.1 1.00 0.03 0.5 1.8 -- C -- 0
allowed 5. Cover waste containers at the end of each workday and before storm events or provide secondary
1. Do not discharge concrete or cement slurry from the site. s A 4+50 - 8+4CR 0.5 7.2 1.7 6.1 1.00 0.03 0.9 2.8 0.6 A 1.45 0
containment. Repair or replace damaged waste containers. g Y
7 days for slopes greater than 50'in length and lightweight g g 2. Dispose of,or recycle settled,hardened concrete residue in accordance with local and state solid waste s A 8+40 - 16+50L 0.5 7.2 0.7 2.5 0.59 0.03 0.7 1.8 -- C -- o
6. Anchor all li htwei ht items in waste containers during times of high winds. p Y
with slopes steeper than 4:1 7. Empty waste containers as needed to prevent overflow. Clean up immediately if containers overflow.
regulations and at an approved facility. fo A 8+50 - 16+5CR 0.5 7.2 4.6 16.6 0.59 0.03 1.5 3.0 0.6 A 1.45
(d) Slopes 3:1 to 4:1 14 -7 days for perimeter dikes,swales,ditches, 8. Dispose waste off-site at an approved disposal facility. 3. Manage washout from mortar mixers in accordance with the above item and in addition place the mixer f f A 16+50 - 20+50L 0.5 7.2 1.4 5.0 0.87 0.03 0.9 2.5 0.5 A 1.45 2
perimeter slopes and HOW Zones 9. On business days,clean up and dispose of waste in designated waste containers. and associated materials on impervious barrier and within lot perimeter silt fence. 12 A 16+50 - 20+50R 0.5 7.2 4.9 17.6 0.87 0.03 1.4 3.5 0.8 A 1.45
10 days for Falls Lake Watershed 4. Install temporary concrete washouts per local requirements,where applicable. If an alternate method or 13 A 20+50 - 24+50L 0.5 7.2 4.9 17.6 1.63 0.03 1.3 4.4 1.3 A 1.45
product is to be used,contact your approval authority for review and approval. If local standard details t4 A 20+50 - 24+5CR 0.5 7.2 5.2 18.7 1.63 0.03 1.3 4.4 1.3 A 1.45 °
-7 days for perimeter dikes,swales,ditches, are not available,use one of the two types of temporary concrete washouts provided on this detail. o
perimeter slopes and HOW Zones PAINT AND OTHER LIQUID WASTE fs A 24+50 - ENDL 0.5 7.2 1.0 3.6 0.50 0.03 0.9 1.9 -- C --
(e) Areas with slopes flatter 5. Do not use concrete washouts for dewatering or storing defective curb or sidewalk sections. Stormwater __
14 -10 days for Falls Lake Watershed unless there is zer 1. Do not dump paint and other liquid waste into storm drains,streams or wetlands. is A 24+50 - ENDR 0.5 7.2 0.1 0.4 0.50 0.03 0.4 1.1 -- C o
than 4:1 accumulated within the washout may not be pumped into or discharged to the storm drain system or
slope 2. Locate paint washouts at least 50 feet away from storm drain inlets and surface waters unless no other receiving surface waters. Liquid waste must be pumped out and removed from project. 0
alternatives are reasonably available. 17 B 0+00 - CDSL 0.5 7.2 0.4 1.4 0.50 0.03 0.6 1.5 -- C --
6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it can be shown that
Note:After the permanent cessation of construction activities,any areas with temporary ground stabilization shall 3. Contain liquid wastes in a controlled area. no other alternatives are reasonably available. At a minimum,install protection of storm drain inlet(s) fs B 0+00 - CDSR 0.5 7.2 2.2 7.9 0.50 0.03 1.2 2.3 0.4 A 1.45 0-
be converted to permanent ground stabilization as soon as practicable but in no case longer than 90 calendar days 4. Containment must be labeled,sized and placed appropriately for the needs of site. closest to the washout which could receive spills or overflow. z O v
after the last land disturbing activity. Temporary ground stabilization shall be maintained in a manner to render 5. Prevent the discharge of soaps,solvents,detergents and other liquid wastes from construction sites. 7. Locate washouts in an easily accessible area,on level ground and install a stone entrance pad in front of fs C 0+00 - ENDL 0.5 7.2 2.0 14.8 0.50 0.03 1.1 2.3 0.4 A 1.45 w
the surface stable against accelerated erosion until permanent ground stabilization is achieved. the washout. Additional controls may be required by the approving authority. 20 C 0+00 - ENDR 0.5 7.2 0.4 1.1 0.50 0.03 0.6 1.5 -- C -- � z
01f8. Install at least one sign directing concrete trucks to the washout within the project limits. Post signage on > w o
GROUND STABILIZATION SPECIFICATION > z z o 0 0
the washout itself to identify this location. 21 D 0+00 - CDSL 0.5 7.2 4.1 7.2 0.50 0.03 1.5 2.7 0.5 A 1.45 0 � N v
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Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the techniques in the table o � z J
9. Remove leavings from the washout when at approximately 75%capacity to limit overflow events. 22 D 0+00 - CDSR 0.5 7.2 0.3 1.4 0.50 0.03 0.6 1.4 -- C -- z J O O U - v
below: PORTABLE TOILETS
Replace the tarp,sand bags or other temporary structural components when no longer functional. When 0 Ln Ln zz � J z z -
Temporary Stabilization Permanent stabilization 1. Install portable toilets on level ground,at least 50 feet away from storm drains,streams or wetlands unless utilizing alternative or proprietary products,follow manufacturer's instructions. r" J w � o Q �
23 H 0+00 - 2+50L 0.5 7.2 0.2 0.7 0.82 0.03 0.4 1.5 -- C -- z � Lt z w
• Temporary grass seed covered with straw or Permanent grass seed covered with straw or there is no alternative reasonably available. If 50 foot offset is not attainable,provide relocation of Q oc U w Z 0- Cn - >
p Y g g Y p 10. At the completion of the concrete work,remove remaining leavings and dispose of in an approved U un a � Q CD
other mulches and tackifiers other mulches and tackifiers portable toilet behind silt fence or place on a gravel pad and surround with sand bags. ® H 0+00 - 2+5CR 0.5 7.2 0.7 2.5 0.82 0.03 0.7 2.0 0.4 A 1.45 O U Q z M
disposal facility. Fill pit,if applicable,and stabilize any disturbance caused by removal of washout. z z = a m Q o
• Hydroseeding • Geotextile fabrics such as permanent soil 2. Provide staking or anchoring of portable toilets during periods of high winds or in high foot traffic areas. 25 H 2+50 - CDSL 0.5 7.2 0.2 0.7 0.61 0.03 0.5 1.3 -- C --
• Rolled erosion control products with or reinforcement matting 3. Monitor portable toilets for leaking and properly dispose of any leaked material. Utilize a licensed sanitary 2s H 2+50 - CDSR 0.5 7.2 0.5 1.8 0.61 0.03 0.7 1.7 -- C --
without temporary grass seed • Hydroseeding waste hauler to remove leaking portable toilets and replace with properly operating unit. o
• Appropriately applied straw or other mulch • Shrubs or other permanent plantings covered r„ Ln 0
• Plastic sheeting with mulch 27 E 0+00 - 1+OOL 0.5 7.2 0.3 1.1 8.53 0.03 0.3 4.0 1.6 D 2.00 z z
Y g HERBICIDES PESTICIDES AND RODENTICIDES 28 E 0+00 - 1+OOR 0.5 7.2 0.8 2.9 8.53 0.057 0.6 3.3 2.1 B 3.00 w w
• Uniform and even) distributed round cover v
29 E 1+00 CDSL 0.5 7.2 0.2 0.7 2.52 0.03 0.4 2.3 0.6 A 1.45
sufficient to restrain erosion EARTHEN STOCKPILE MANAGEMENT Q � > _0
1. Store and apply herbicides,pesticides and rodenticides in accordance with label restrictions. 3o E 1+00 - CDSR 0.5 7.2 0.5 1.8 2.52 0.03 0.5 2.9 0.8 A 1.45 O O 2
• structural methods such as concrete,asphalt or 1. Show stockpile locations on plans. Locate earthen material stockpile areas at least 50 feet away from 2. Store herbicides,pesticides and rodenticides in their original containers with the label,which lists z
retaining walls storm drain inlets,sediment basins,perimeter sediment controls and surface waters unless it can be LL
• Rolled erosion control products with grass seed directions for use,ingredients and first aid steps in case of accidental poisoning. of Ct. o
p g shown no other alternatives are reasonably available. 31 F CDS - -0+50L 0.5 7.2 1.5 5.4 6.57 0.057 0.8 3.4 3.0 B 3.00 LU � � 2
3. Do not store herbicides,pesticides and rodenticides in areas where flooding is possible or where they Q Q
2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of five feet from the toe may spill or leak into wells,stormwater drains,ground water or surface water. If a spill occurs,clean area 32 F COS - -0+50R 0.5 7.2 0.3 1.1 6.57 0.03 0.3 4.0 1.2 D 2.00 O 3
of stockpile. Ln � U :
immediately. 33 F -0+50 - O+OOL 0.5 7.2 1.8 6.5 3.33 0.03 0.7 5.0 1.5 D 2.00 Z off POLYACRYLAMIDES(PAMS)AND FLOCCULANTS 3. Provide stable stone access point when feasible. _O O � O
4. Do not stockpile these materials onsite. 34 F -0+50 - O+OOR 0.5 7.2 0.3 1.1 3.33 0.03 0.4 2.8 0.8 A 1.45
1. Select flocculants that are appropriate for the soils being exposed during construction,selecting from the 4. Stabilize stockpile within the timeframes provided on this sheet and in accordance with the approved plan �T _ v�T
35 F 0+00 - 1+OOL 0.5 7.2 2.1 7.6 3.33 0.03 0.8 5.0 1.7 D 2.00
NCDWR List of Approved PAMS/Flocculants. and any additional requirements. Soil stabilization is defined as vegetative,physical or chemical coverage w N a
3s F 0+00 - 1+OOR 0.5 7.2 0.4 1.4 3.33 0.03 0.4 3.0 0.8 A 1.45 o
2. Apply flocculants at or before the inlets to Erosion and Sediment Control Measures. techniques that will restrain accelerated erosion on disturbed soils for temporary or permanent control
needs. HAZARDOUS AND TOXIC WASTE 37 F 1+00 - 2+50L 0.5 7.2 4.1 14.8 1.00 0.03 1.3 3.5 0.8 A 1.45 z Sri z 0
3. Apply flocculants at the concentrations specified in the NC DWR List of Approved PAMS/Flocculants and in 1. Create designated hazardous waste collection areas on site.
accordance with the manufacturer's instructions. g 313 F 1+00 - 2+50R 0.5 7.2 0.5 1.8 1.00 0.03 0.6 2.1 0.4 A 1.45 � o
4. Provide ponding area for containment of treated Stormwater before discharging offsite. 2. Place hazardous waste containers under cover or in secondary containment. 3s F 2+50 - CDSL 0.5 7.2 4.4 15.8 5.14 0.060 1.2 3.9 3.8 E 4.00 0 0 0
3. Do not store hazardous chemicals,drums or bagged materials directly on the ground. 4o F 2+50 - CSR 0.5 7.2 0.6 2.2 5.14 0.03 0.4 4.0 1.3 D 2.00 N 0
5. Store flocculants in leak-proof containers that are kept under storm-resistant cover or surrounded by o 0
secondary containment structures. o o
of G 0+00 - 2+50L 0.5 7.2 0.2 0.7 2.79 0.03 0.4 2.3 0.7 A 1.45 0
EFFECTIVE: 04/01/19 42 G 0+00 - 2+50R 0.5 7.2 0.2 0.7 2.79 0.03 0.4 2.3 0.7 A 1.45
NCGOI GROUND STABILIZATION AND MATERIALS HANDLING 43 G 2+50 - 4+50L 0.5 7.2 0.4 1.4 1.00 0.03 0.5 1.9 -- C -- Q
44 G 2+50 - 4+5CR 0.5 7.2 0.4 1.4 1.00 0.03 0.5 1.9 -- C -- o
45 G 4+50 - 7+30L 0.5 7.2 0.6 2.2 5.00 0.03 0.5 4.0 1.45 A 1.45 0
PART III PART III 46 G 4+50 - 7+3CR 0.5 7.2 0.6 2.2 5.00 0.03 0.5 4.0 1.45 A 1.45 v
a7 G 7+30 - 10+OOL 0.5 7.2 3.4 12.2 2.59 0.057 1.0 2.9 2.1 B 3.00
SELF INSPECTION,RECORDKEEPING AND REPORTING SELF-INSPECTION,RECORDKEEPING AND REPORTING
PART III as G 7+30 - 1 C+OOR 0.5 7.2 0.6 2.2 2.59 0.057 1.0 2.9 2.1 B 3.00 z
SECTION A:SELF-INSPECTION SELF INSPECTION,RECORDKEEPING AND REPORTING 45 G 10+00 - 11+50L 0.5 7.2 3.2 11.5 5.67 0.060 1.1 3.7 3.9 E 4.00 UJ
SECTION B:RECORDKEEPING
Self-inspections are required during normal business hours in accordance with the table below. When adverse So G 10+00 - 11+5CR 0.5 7.2 0.4 1.4 5.67 0.03 0.4 3.7 1.4 A 1.45 J
p q g 1. E&SC Plan Documentation sf G 11+50 - 13+50L 0.5 7.2 1.9 6.8 2.25 0.03 0.8 3.9 1.1 A 1.45 J _J
weather or site conditions would cause the safety of the inspection personnel to be in jeopardy,the inspection SECTION C:REPORTING
The approved E&SC plan as well as any approved deviation shall be kept on the site. The approved E&SC plan
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may be delayed until the next business day on which it is safe to perform the inspection. In addition,when a must be kept up-to-date throughout the coverage under this permit. The following items pertaining to the E&SCReported52 G 11+50 - 13+5CR 0.5 7.2 0.2 0.7 2.25 0.03 0.4 2.2 0.6 A 1.45
Y Y Y p p 1. Occurrences that Must be a o
storm event of equal to or greater than 1.0 inch occurs outside of normal business hours,the self-inspection shall 53 G 13+50 - 15+20L 0.5 7.2 1.1 4.0 3.09 0.03 0.7 3.8 1.4 A 1.45 �� 0
plan shall be kept on site and available for inspection at all times during normal business hours. Permittees shall report the following occurrences:
be performed upon the commencement of the next business day. Any time when inspections were delayed shall sa G 13+50 - 15+2CR 0.5 7.2 0.1 0.4 3.09 0.03 0.3 2.0 0.6 A 1.45 ►`1/
be noted in the Inspection Record. Item to Document Documentation Requirements (a) Visible sediment deposition in a stream or wetland. I_L_ r•
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Frequency (a) Each E&SC measure has been installed Initial and date each E&SC measure on a copy r,
(b) Oil spills if: � W Ei Inspect (during normal Inspection records must include: and does not significantly deviate from the of the approved E&SC plan or complete,date "STRAW W NET"
business hours) locations,dimensions and relative elevations and sign an inspection report that lists each • They are 25 gallons or more,
1 Rain gauge Dail Dail rainfall amounts. TEMP. SWALE LINER E
( ) g g Y Y shown on the approved E&SC plan. E&5C measure shown on the approved E&5C • The r-i ❑ w
maintained in If no daily rain gauge observations are made during weekend or y are less than 25 gallons but cannot be cleaned up within 24 hours, AS SHOWN ry
plan. This documentation is required upon the 3 rj Ln L•'• Q5
good working holiday periods, and no Individual-day rainfall Information Is .5' �j, n i31 Z
order available, record the cumulative rain measurement for those un-
initial installation of the E&SC measures or if • They cause sheen on surface waters(regardless ofvolume),or 1 1 1' N
attended days (and this will determine If a site inspection is the E&SC measures are modified afteriniVal . They are within 100 feet of surface waters(regardless of volume).
needed). Days on which no rainfall occurred shall be recorded as installation. 3 3
"zero." The permittee may use another rain-monitoring device ~� Z
(b) A phase of grading has been completed. Initial and date a copy of the approved E&SC 6' W
approved by the Division. C Releases of hazardous substances in excess of reportable quantities under Section 311 of the Clean ❑ w
(2) E&SC At least once per 1. Identification of the measures inspected, plan or complete,date and sign an inspection ( ) p q SEE PER [ tj
Measures 7 calendar days 2. Date and time of the inspection, report to indicate completion of the 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. PERMANENT SWALE "F" PROJECT W L� w
and within 24 3. Name of the person performing the inspection, construction phase. NTS SPECS
hours of a rain 4. Indication of whether the measures were operating ❑ 0 w
(c) Ground cover is located and installed Initial and date a copy of the approved E&SC d Anticipated bypasses and unanticipated bypasses.
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event�1.D inch in properly, ( ) p Yp p Yp w
24 hours 5. Description of maintenance needs for the measure, in accordance with the approved E&SC plan or complete,date and sign an inspection
SWALE CALCULATION TABLELLJ
6. Description,evidence,and date of corrective actions taken. plan. report to indicate compliance with approved p❑j
3 Stormwater At least once per 1. Identification of the discharge outfalls inspected, Noncompliance with the conditions of this permit that may endanger health or the environment. .0
{ ) p g P ground cover specifications. (e) p p Y g LOT # C I A Q10(CFS) SWALE SLOPE n NORMAL DEPTH VELOCITY SHEAR STRESS SWALE TYPE SHEAR STRESS U
discharge 7 calendar days 2. Date and time of the inspection, O
d The maintenance and repair Complete,date and sign an inspection report. (IN/HR) (AC.) =CIA M (FT) (FT/S) REQUIRED PSF PROVIDED PSF -0
outfalls{SDOs) and within 24 3. Name of the person performing the Inspection, ( ) p p g p p ° (PSF) (PSF) � � �
hours of a rain 4. Evidence of Indicators of Stormwater pollution such as oil requirements for all E&SC measures 2. Reporting Timeframes and Other Requirements 55 86/87 0.5 7.2 5.0 18.0 3.4 0.03 0.5 4.9 1.1 F 1.45 N J
event>1.0 inch in sheen,floating or suspended solids or discoloration, have been performed. 00
24 hours 5. Indication of visible sediment leaving the site, After a permittee becomes aware of an occurrence that must be reported,he shall contact the appropriate ss 58 0.5 7.2 5.3 19.1 0.5 0.03 0.9 2.6 0.3 F 1.45 U-) a
(e) Corrective actions have been taken Initial and date a copy of the approved E&SC Lr7 '0 �
G. Description,evidence,and date of corrective actions taken. Division regional office within the timeframes and in accordance with the other requirements listed below. � 26/27 0.5 7.2 10.5 37.8 0.9 0.03 1.1 3.9 0.6 F 1.45 � Ca z
(4)Perimeter of At least once per If visible sedimentation is found outside site limits,then a record to E&sc measures. plan or complete,date and sign an inspection Occurrences outside normal business hours may also be reported to the Department's Environmental Emergency rV -
site 7 calendar days ofthe following shall he made: report to indicate the completion of the s8 8/9 0.5 7.2 1.2 4.3 0.7 0.03 0.3 1.8 0.1 F 1.45 Ln a
and within 24 1. Actions taken to clean u or stabilize the sediment that has left Center personnel at(800)858-0368. z
p corrective action.
hours of a rain the site limits,
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event>1.0 inch in 2. Description,evidence,and date of corrective actions taken,and Occurrence Reporting Timeframes(After Discovery)and Other Requirements
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24 hours 3. An explanation as to the actions taken to control future 2.Additional Documentation to be Kept on Site (a)Visible sediment • Within 24 hours,an oral or electronic notification. a
releases. In addition to the E&SC plan documents above,the following items shall be kept on the deposition in a • Within 7 calendar days,a report that contains a description of the w
(5)Streams or At least once per If the stream or wetland has increased visible sedimentation or a
site and available for inspectors at all times during normal business hours,unless the stream or wetland sediment and actions taken to address the cause of the deposition.
wetlands onsite 7 calendar days stream has visible increased turbidity from the construction w
or offsite and within 24 activity,then a record of the following shall be made: Division provides a site-specific exemption based On unique site conditions that make Division staff may waive the requirement for a written report on a J
(where hours of a rain 1. Description,evidence and date of corrective actions taken,and this requirement not practical: case-by-case basis. • wo
accessible) event>1.0 Inch In 2. Records of the required reports to the appropriate Division If the stream is named on the NC 303(d)list as impaired for sediment-
24 hours Regional Office per Part III,Section C,Item(2)(a)of this permit. related causes,the permittee may be required to perform additional
6 Ground After each phase 1. The phase of grading installation of perimeter E&SC (a) This General Permit as well as the Certificate of Coverage,after it is received.
( ) P p g g( P monitoring,inspections or apply more stringent practices if staff [ � �
stabilization of grading measures,clearing and grubbing,installation of storm determine that additional requirements are needed to assure compliance \� o
measures drainage facilities,completion of all land-disturbing (b) Records of inspections made during the previous twelve months. The permittee shall record the required
with the federal or state impaired-waters conditions. V
activity,construction or redevelopment,permanent observations on the Inspection Record Form provided by the Division or a similar inspection form that v
ground cover). (b)Oil spills and • Within 24 hours,an oral or electronic notification. The notification 0
includes all the required elements. Use of electronically-available records in lieu of the required paper
2. Documentation that the required ground stabilization release of shall include information about the date,time, nature,volume and
measures have been provided within the required copies will be allowed if shown to provide equal access and utility as the hard-copy records. hazardous location of the spill or release.
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timeframe or an assurance that they will be provided as substances per Item ��
soon as possible. 3.Documentation to be Retained for Three Years 1(b)-(c)above b
All data used to complete the a-NOI and all inspection records shall be maintained for a period
(c)Anticipated A report at least ten days before the date of the bypass,if possible. C I A Q1 O(CFS) SWALE SLOPE n NORMAL DEPTH VELOCITY SHEAR STRESS SHEAR STRESS N E
NOTE:The rain inspection resets the required 7 calendar day inspection requirement. of three years after project completion and made available upon request.[40 CFR 122.41] IN HR AC. =CIA % FT FT S CONSTRUCTION SPECIFICATIONS CD
bypasses[40 CFR The report shall include an evaluation of the anticipated quality and ( / ) ( ) ( ) ( ) ( / ) REQUIRED (PSF) PROVIDED (PSF) v
122.41(m)(3)] effect of the bypass. 0.5 7.2 3.11.2 MAX 0.3% 0.03 1.7 1.3 0.32 2.00 PLACE RIPRAP SO THAT IT FORMS A DENSE, e J
Yp (MAX)( ) ( ) WELL-GRADED MASS OF STONE WITH A MINIMUM OF
(d) Unanticipated Within 24 hours,an oral or electronic notification.
PART II,SECTION G,ITEM(4) VOIDS. THE DESIRED DISTRIBUTION OF STONES J v
bypasses[40 CFR • Within 7 calendar da s,a report that includes an evaluation of the L:
DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT y p THROUGHOUT THE MASS MAY BE OBTAINED BY � o
122.41(m)(3)] quality and effect of the bypass.
SELECTIVE LOADING AT THE QUARRY,AND � �
(e)Noncompliance • Within 24 hours,an oral or electronic notification. RIP RAP GRAI/EL CONTROLLED DUMPING DURING FINAL PLACEMENT. O E
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 with the conditions Within 7 calendar days,a report that contains a description of the 1 1 SIZED & PLACED PLACE RIPRAP TO ITS FULL THICKNESS IN ONE 0
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 of this permit that noncompliance,and its causes;the period of noncompliance, 2.5' AS PER PLAN OPERATION. DO NOT PLACE RIPRAP BY DUMPING LLJ O
3
following criteria have been met: may endanger including exact dates and times,and if the noncompliance has not 3 D THROUGH CHUTES OR OTHER METHODS THAT Q o
health or the been corrected,the anticipated time noncompliance is expected to D CAUSE SEGREGATION OF STONE SIZES. TAKE CARE LL J
(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 environment[40 continue;and steps taken or planned to reduce,eliminate,and D NOT TO DISLODGE THE UNDERLYING BASE OR
CFR 122.41(I)(7)] prevent reoccurrence of the noncompliance. [40 CFR 122.41(I)(6). O D FILTER WHEN PLACING STONES. LLJ o
shall not commence until the E&SC plan authority has approved these items, Division staff may waive the requirement for a written report on a RIP RAP d50=6", o _ 75
RIP RAP APRON
(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, case-by-case basis. MIN DEPTH=18" THICKNESS AS MAINTENANCE LL `n `n
(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 AS SHOWN PER PLAN D� RIPRAP SHOULD BE INSPECTED PERIODICALLY AND
properly sited,designed and maintained dewatering tanks,weir tanks,and filtration systems, AFTER HEAVY RAINFALLS FOR SCOUR OR
DISLODGED STONES. CONTROL OF WEED AND w
(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, LTER FABRIC BRUSH GROWTH MAY BE NEEDED IN SOME Q E
(e) Velocity dissipation devices such as check dams,sediment traps,and riprap are provided at the discharge points of all dewatering devices,and 6" MIN. LOCATIONS. IMMEDIATELY MAKE ALL NEEDED o
(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. REPAIRS TO PREVENT FURTHER DAMAGE. Q
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NCGOI SELF-INSPECTION RECORDKEEPING AND REPORTING EFFECTIVE: 04/01/19 PERMANENT RIP RAP rrTrr DETAIL of
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(NOT TO SCALE) _ >