SW6230804_Plansheet - Misc. Detail_20240621 (5)

0 UPSTREAM TERMINAL TRANSVERSE CHECK SLOT
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GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH EQUIPMENT AND VEHICLE MAINTENANCE ONSITE CONCRETE WASHOUT .�,Ilk -- �k TURNDOWN NETTING 1 2 v
THE NCG01 CONSTRUCTION GENERAL PERMIT STRUCTURE WITH LINER P n 6 = N
1. Maintain vehicles and equipment to prevent discharge of fluids. �, �. � _ MINIMUM BURY 6 O
Implementing the details and specifications on this plan sheet will result in the construction 2. Provide drip pans under any stored equipment. r,r„ '� e z lit
activity being considered compliant with the Ground Stabilization and Materials Handling any T a.nm -- N
3. Identify leaks and repair as soon as feasible,or remove leaking equipment from the „ ,,,�,,, o o I Om.,
sections of the NCG01 Construction General Permit(Sections E and F,respectively). The project. o :<. m: ° " u 0 0 ►� :cw FLOW © uJ I-
ermittee shall comply with the Erosion and Sediment Control Ian approved b the o o o - z o _J LU
p p Y p pp v o STEP 1: CUT CHECK SLOT W o Q
4. Collect all spent fluids,store in separate containers and properly dispose as - OVERLAP NETTING STEP 1: CUT TERMINAL SLOT g" z> o LD co O Lu
delegated authority having jurisdiction.All details and specifications shown on this sheet ,> > 5: =
hazardous waste(recycle when possible). . �- -� MINIMUM OVERLAP 18 TEMPORARILY STAKE MATL O z W uJ � cn
may not apply depending on site conditions and the delegated authority having jurisdiction. ,,., „ F- o of
arrsr rr•nna m•rs u nr.rrnn t rawmr nrrrnM.ns a 5; w fV
5. Remove leaking vehicles and construction equipment from service until the problem nc�mnocvaarw•- °° � Yr ran .. [� 1 g UNDER MODERATE TENSION w "' iE o � O
Ir"""I'I f(w uc�rw moemo m rni am rs rcv a mar emu s nc mcca vnoon u n � to o � O 12'
SECTION E:GROUND STABILIZATION has been corrected. mis,un•rsr_E•nsos. O ♦ wCo
nnass>R o rrs macron U O
!nu nr. ax v ns mucrrncs _nwra01navmr__ 0 uJ 6. Bring use fuels,lubricants,coolants,hydraulic fluids an other petroleum products �.
Required Ground Stabilization Timeframes &A nmosrrv�narrmnmarmmm�r elal unOE6"®"m TYPICAL STAPLE$ 1 on =Of o 0
to a recycling or disposal center that handles these materials. arras•nxnvm mn•¢mncnrv� acuasrrvmwrmunus o z
Stabilize within this -�"'"n"" O
many calendar BELOW GRADE 4i i1T STRUCTURE A80VE GRAD,6 WASHOLIT�� STRUCTURE
C o USE #6 GAUGE WIRE
Site Area Description days after ceasing Timeframe variations LITTER,BUILDING MATERIAL AND LAND CLEARING WASTE STEP 2: WORK UPSTREAM ACROSS,
land disturbance 1. Never bury or burn waste. Place litter and debris in approved waste containers. STEP 2: SNUG MAT INTO SLOT CHECK SLOT LAP BACK 15"
(a) Perimeter dikes, 2. Provide a sufficient number and size of waste containers(e.g dumpster,trash CONCRETE WASHOUTS GENERAL NOTES:
swales,ditches,an 7 None receptacle)on site to contain construction and domestic wastes. 1. Do not discharge concrete or cement slurry from the site. �,.� v
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 1. APPLY SEED, STRAW AND TACK WITH IRS OR CRS LIQUID EMULSIFIED ASPHALT AT A RATE o o M o N CN
waters unless no other alternatives are reasonably available. `: ; M `V
(b) High Quality Water Y and state solid waste regulations and at an approved facility. � o r„ o � N
7 None EQUAL TO 10 GAL. PER 1000 S.F. COVER W/FIBERGLASS NETTING. M ; � - i
(HQW)Zones 4. Locate waste containers on areas that do not receive substantial amounts of runoff 3. Manage washout from mortar mixers in accordance with the above item and in � o 0
STEP 3:TUCK MAT LAP INTO SLOT
from upland areas and does not drain directly to a storm drain,stream or wetland. addition lace the mixer and associated materials on impervious barrier and within 2. STAPLE EVERY 24"ALONG PERIMETER EDGES AND OVERLAPS. STAPLE EVERY 36"TO 48" o - - O
(c) Slopes steeper than If slopes are 10'or less in length and are p p STEP 3: &STAKE tLi z
7 not stee er than 2:1,14 da s are 5. Cover waste containers at the end of each workday and before storm events or lot perimeter silt fence. RANDOMLY TO SECURE NETTING. � Lu
3:1 p v A. STAKE MAT INTO SLOT Q �
allowed provide secondary containment. Repair or replace damaged waste containers. 4. Install temporary concrete washouts per local requirements,where applicable. If an 3. INSTALL TEMPORARY STRAW MATTING ALONG PROPOSED 3:1 FILL SLOPES TO PROMOTE - - M - 0 IL
6. Anchor all lightweight items in waste containers during times of high winds. alternate method or product is to be used,contact our a B. USE 1"X3" PRESSURE TREATED BOARD TO BRACE MAT AGAINST VERTICAL CUT
-7 days for slopes greater than 50'ing g p y approval authority for VEGETATION/SLOPE STABILIZATION,AS NEEDED.
length and with slopes steeper than 4:1 7. Empty waste containers as needed to prevent overflow. Clean up immediately if review and approval. If local standard details are not available,use one of the two C. BACKFILL AND COMPACT
7 days for perimeter dikes,swales, containers overflow. types of temporary concrete washouts provided on this detail.
d slo es 3:1 to 4:1 14 MAINTENANCE:
( ) p ditches,perimeter slopes and HQW 8. Dispose waste off-site at an approved disposal facility. 5. Do not use concrete washouts for dewatering or storing defective curb or sidewalk .
Zones 9. On business days,clean up and dispose of waste in designated waste containers. sections. Stormwater accumulated within the washout may not be pumped into or .
10 days for Falls Lake Watershed discharged to the storm drain system or receiving surface waters. Liquid waste must SLOPE STABILITY AND MATTING SHALL BE REGULARLY MONITORED, ESPECIALLY AFTER RAIN STEP 4: BACKFILL AND PROGRESS UPSTREAM
7 days for perimeter dikes,swales, PAINT AND OTHER LIQUID WASTE be pumped out and removed from project. EVENTS.ADDITIONAL MATTING SHALL BE INSTALLED TO REPLACE DAMAGED OR MISSING PULL OUT TEMPORARY STAKES WHEN NO
ditches,perimeter slopes and HOW Zones 1. Do not dump 6. Locate washouts at least 50 feet from storm drain inlets and surface waters unless it
p p p paint and other liquid waste into storm drains,streams or wetlands. MATTING MATERIAL UNTIL VEGETATION HAS BEEN PROPERLY ESTABLISHED AND SITE IS STEP 4:
(e) Areas with slopes can be shown that no other alternatives are reasonably available. At a minimum, LONGER NEEDED FOR TENSIONONG
flatter than 4:1 14 10 days for Falls Lake Watershed unless 2. Locate paint washouts at least 50 feet away from storm drain inlets and surface install protection of storm drain inlets)closest to the washout which could receive ACCEPTED. A. REVERSE MAT ROLL DIRECTION TO OVERLAY CHECK SLOT
there is zero slope waters unless no other alternatives are reasonably available. spills or overflow. B. STAKE MAT TO ANCHOR TERMINAL DOWNSTREAM TERMINAL
Note:After the permanent cessation of construction activities,any areas with temporary 3. Contain liquid wastes in a controlled area. 7. Locate washouts in an easily accessible area,on level ground and install a stone
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. entrance pad in front of the washout. Additional controls may be required by the 1 3" UJ
1'2"
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. TEMPORARY LINER
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 SCALE: NTS
surface stable against accelerated erosion until permanent ground stabilization is achieved. limits. Post signage on the washout itself to identify this location. EC-06
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17
PORTABLE TOILETS 9. Remove leavings from the washout when at approximately 75%capacity to limit
GROUND STABILIZATION SPECIFICATION 1. Install portable toilets on level round,at least 50 feet awn from storm drains, STEP 1: CUT TERMINAL SLOT .
Stabilize the round sufficient) so that rain will not dislodge the soil. Use one of the p g y overflow events. Replace the tarp,sand bags or other temporary structural
g Y g 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.
Temporary Stabilization Permanent Stabilization on a gravel pad and surround with sand bags. 10. At the completion of the concrete work,remove remaining leavings and dispose of
•Temporary grass seed covered with straw or • Permanent grass seed covered with straw or 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 \ / O �
other mulches and tackifiers other mulches and tackifiers foot traffic areas. caused by removal of washout.
• Hydroseeding •Geotextile fabrics such as permanent soil 3. Monitor portable toilets for leaking and properly dispose of any leaked material.
• Rolled erosion control products with or reinforcement matting Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace STEP 2: ST7
AKE MAT INTO SLOT
without temporary grass seed • Hydroseeding with properly operating unit. vIVvl I t_ v\lIVllIXL I t_ vvllVI IIJv 1
• Appropriately applied straw or other mulch •Shrubs or other permanent plantings covered HERBICIDES,PESTICIDES AND RODENTICIDES STRUCTURE WITH LINER 5 -
- Plastic sheeting with mulch .
1. Store and apply herbicides,pesticides and rodenticides in accordance with label
• Uniform and evenly distributed ground cover EARTHEN STOCKPILE MANAGEMENT restrictions.
sufficient to restrain erosion 1. Show stockpile locations on plans. Locate earthen-material stockpile areas at least 10'-O"MIN.
2. Store herbicides,pesticides and rodenticides in their original containers with the
•structural methods such as concrete,asphalt or 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 A J
retaining walls and surface waters unless it can be shown no other alternatives are reasonably accidental poisoning. o 0 3 STEP 3: BACKFILL TERMINAL SLOT
• Rolled erosion control products with grass seed available. O O SANDBAGS(TYP.) Q
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3. Do not store herbicides,pesticides and rodenticides in areas where flooding is OR STAPLES
2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of z O O 10 MIL
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. 2 1:1 PLASTIC ( J
or surface water. If a spill occurs,clean area immediately. o O SIDE SLOPE LINING ORSTAP SErY )
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. - (TYP.)
construction,selecting from the NC DWR List of Approved PAMS/Flocculants. 4. Stabilize stockpile within the timeframes provided on this sheet and in accordance O O O
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 _ q Z X
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3. Apply flocculants at the concentrations specified in the NCDWR List of Approved as vegetative,physical or chemical coverage techniques that will restrain accelerated MAINTENANCE I 1. I 11 . . I . . . . . . . . Z
PAMS/Flocculants and in accordance with the manufacturer's instructions. erosion on disturbed soils for temporary or permanent control needs. HAZARDOUS AND TOXIC WASTE A .
1. Create designated hazardous waste collection areas on-site. l
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4. Provide ponding area for containment of treated stormwater before discharging 2. Place hazardous waste containers under cover or in secondary containment. 1. INSPECT ROLLED EROSION CONTROL PRODUCTS DAILY AND AFTER EVERY RAIN STEP 4:
offsite. r.e NORTH CARflLINA bagged v g FALL EVENT REPAIR IMMEDIATELY. z
t} 3. Do not store hazardous chemicals,drums or ba ed materials direct) on the round. CLEARLY MARKED SIGNAGE A. ROLL MAT UP STREAM OVER REFILLED TERMINAL
5. Store flocculants in leak proof containers that are kept under storm resistant cover �,, SECTION A-A
or surrounded by secondary containment structures. � 11, Environmental Qualityw°Nsrofour NOTING DEVICE(18"x24"MIN.) NOTES: 2. GOOD CONTACT WITH THE GROUND MUST BE MAINTAINED,AND EROSION MUST B. STAKE MAT DOWN TO ANCHOR TERMINAL
1.ACTUAL LOCATION DETERMINED IN FIELD NOT OCCUR BENEATH THE RECP. C. PROGRESS UPSTREAM WITH ROLL Z O
2.THE CONCRETE WASHOUT STRUCTURES SHALL BE 3.ANY AREAS OF THE RECP THAT ARE DAMAGED OR NOT IN CLOSE CONTACT WITH
NCGO I GROUND STABILIZATION AND MATERIALS HANDLING EFFECTIVE: 04/01/19 MAINTAINED WHEN THE LIQUID AND/OR SOLID REACHES THE GROUND SHALL BE REPAIRED AND STAPLED. Z) Q
75%OF THE STRUCTURES CAPACITY. 4. IF EROSION OCCURS DUE TO POORLY CONTROLLED DRAINAGE, THE PROBLEM Q
PLAN 3.CONCRETE WASHOUT STRUCTURE NEEDS TO BE SHALL BE FIXED AND THE ERODED AREA PROTECTED.
CLEARY MARKED WITH SIGNAGE NOTING DEVICE.
5. MONITOR AND REPAIR THE RECP AS NECESSARY UNTIL GROUND COVER IS
BELOW GRADE WASHOUT STRUCTURE ESTABLISHED. W
NOT TO SCALE
PART III PART III PART III0 SELF-INSPECTION,RECORDKEEPING AND REPORTING SELF-INSPECTION,RECORDKEEPING AND REPORTING SELF-INSPECTION,RECORDKEEPING AND REPORTING HIGH 10'-0"MIN. SANDBAGS(TYP.) O
COHESIVE B OR STAPLES ROLLED EROSION CONTROL PRODUCT Q LOW FILTRATION HIGH
SECTION A:SELF-INSPECTION SECTION B:RECORDKEEPING SECTION C:REPORTING SOIL BERM 10 MIL COHESIVE&
Self-inspections are required during normal business hours in accordance with the table O CD o Q PLASTIC LINING LOW FILTRATION DETAIL REFERENCE 6.17 NC ESCPDM �
P q g 1.E&SC Plan Documentation 1.Occurrences that Must be Reported 1:1 SIDE SLOPE SOIL BERM
below. When adverse weather or site conditions would cause the safety of the inspection The approved E&SC Ian as well as an approved deviation shall be kept on the site. The Permittees shall report the following occurrences: z O O (TYP.) cc
personnel to be in jeopardy,the inspection may be delayed until the next business day on approved E&SC Ian must be kept up-to-date throu hoot the coverage under this permit. p g - O O o N
PP P pg g p (a) Visible sediment deposition in a stream or wetland. o - Z X
which it is safe to perform the inspection. In addition,when a storm event of equal to or a in�a:: ,
The following items pertaining to the E&SC plan shall be kept on site and available for 0 � ,
greater than 1.0 inch occurs outside of normal business hours,the self-inspection shall be inspection at all times during normal business hours.
performed upon the commencement of the next business day. Any time when inspections (b) Oil spills if: O o o �e
2 °
were delayed shall be noted in the Inspection Record. Item to Document Documentation Requirements s" SECTION B-B
Y p • They are 25 gallons or more, INSTALLATION OF EROSION CONTROL li
Frequency (a) Each E&SC measure has been installed Initial and date each E&SC measure on a copy They are less than 25 gallons but cannot be cleaned up within 24 hours, B 3 BLANKET ON SLOPES O
Inspect (during normal Inspection records must include: and does not significantly deviate from the of the approved E&SC plan or complete,date
locations,dimensions and relative elevations and sign an inspection report that lists each • The cause sheen on surface waters(regardless of volume),or SANDBAGS TYP. NOTES: EC-O6
business hours Y g )
(1)Rain gauge Daily Daily rainfall amounts. OR STAPLE 1.ACTUAL LOCATION DETERMINED IN FIELD SCALE: NTS
shown on the approved E&SC plan. E&SC measure shown on the approved E&SC • They are within 100 feet of surface waters(regardless of volume).
maintained in h no daily rain gauge observations are made during weekend or Ian. This documentation is required upon the
good working holiday periods, and no individual-day rainfall information is p q p CLEARLY MARKED SIGNAGE 2.THE CONCRETE WASHOUT STRUCTURES
initial Installation of the E&SC measures or if CONCRETE NOTING DEVICE(18"X24"MIN.) SHALL BE MAINTAINED WHEN THE LIQUID
order available,record the cumulative rain measurement for those un- WASHOUT AND/OR SOLID REACHES 75%OF THE
attended days (oast this will determine if a site inspection is the E&sc measures are modified after initial (c) Releases of hazardous substances in excess of reportable quantities under Section 311
needed). Days on which no rainfall occurred shall be recorded as installation. of the Clean Water Act Ref:40 CFR 110.3 and 40 CFR 117.3 or Section 102 of CERCLA STRUCTURES CAPACITY TO PROVIDE
( ) ADEQUATE HOLDING CAPACITY WITH A
"zero." The permittee may use another rain-monitoring device (Ref:40 CFR 302.4)or G.S.143-215.85. MINIMUM 12 INCHES OF FREEBOARD.
approved by the Division. (b) A phase of grading has been completed. Initial and date a copy of the approved E&SC
(2) E&sC At least once per 1. Identification of the measures inspected, plan or complete,date and sign an inspection
PLAN 3.CONCRETE WASHOUT STRUCTURE NEEDS
Measures 7 calendar days 2. Date and time of the inspection, report to indicate completion of the TO BE CLEARY MARKED WITH SIGNAGE
(d) Anticipated bypasses and unanticipated bypasses. NOTING DEVICE.
and within 24 3. Name of the person performing the inspection, construction phase.
hours of rain 4. Indication of whether the measures were operating ABOVE GRADE WASHOUT STRUCTURE
(c) Ground cover is located and installed Initial and date a copy of the approved E&SC
event>1.0 inch in properly, NOT TO SCALE
24 hours S. Description of maintenance reeds for the measure, in accordance with the approved E&SC plan or complete,date and sign an inspection (e) Noncompliance with the conditions of this permit that may endanger health or the /C
6. Description,evidence,and date of corrective actions taken. plan. report to indicate compliance with approved environment. CJ�OQ 40 S\ ,2r,
(3)Stormwater At least once per 1. Identification of the discharge outfalls inspected, ground cover specifications. PRELIMINARY DESIGN
discharge 7 calendar days 2_ Date and time of the inspection, NOT FOR CONSTRUCTION
outfalls(SDCs) and within 24 3. Name of the person performing the inspection, (d) The maintenance and repair Complete,date and sign an inspection report. 2.Reporting Timeframes and Other Requirements Z.!_ L m
hours of a rain 4. Evidence of indicators of stormwater pollution such as oil requirements for all E&SC measures '�Z,'• � •f N
event>1.0 inch in sheen,floating or suspended solids or discoloration, have been performed. After a permittee becomes aware of an occurrence that must be reported,he shall contact �``-�.1 4 a)N
24 hours 5. Indication of visible sediment leaving the site, the appropriate Division regional office within the timeframes and In accordance with the _.t. ` C
6. Description,evidence,and date of corrective actions taken. (e) Corrective actions have been taken Initial and date a copy of the approved E&SC .•,,,� , T >U
p other requirements listed below. Occurrences outside normal business hours may also be .,�� .,,� > z
J (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
Q reported to the Department's Environmental Emergency Center personnel at(800) � `>n, , @ S
site 7 calendar days of the following shall be made: report to indicate the completion of the w, i / c
o and within 24 1. Anions taken to clean up or stabilize the sediment that has left corrective action. �' .�..,,! \��\�� t6 j
Jo hours of a rain the site limits, !�. `�.�; >,
� event 1.0 inch in 2_ Description,evidence,and date of corrective actions taken,and 2.Additional Documentation to be Kept on Site Occurrence Reporting Timeframes(After Discovery)and Other Requirements "'� u7 W
zo 24 hours 3. An explanation as to the actions taken to control future In addition to the E&SC plan documents above,the following items shall be kept on the (a)Visible sediment • Within 14 hours,an oral or electronic notification. ��"'< o =
z site and available for inspectors at all times during normal business hours,unless the deposition in a • Within 7 calendar days,a report that contains a description of the >* PARALLEL OVERLAPS - SAME MAT N LL
p (S)Streams or At least once per If the stream or wetland has increased visible sedimentation or a Division provides a site-specific exemption based on unique site conditions that make stream or wetland sediment and actions taken to address the cause of the deposition.
0 wetlands onsite 7 calendar days stream has visible increased turbidity from the construction
this requirement not practical: Division staff may waive the requirement for a written report on a M co
0-1 or offsite and within 24 activity,then a record of the following shall be made: q p v v
u case-by-case-case basis. rb o
cn (where hours of a rain 1. Description,evidence and date of corrective actions taken,and y o N
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Lj accessible) event>1.0 inch in 2. Records of the required reports to the appropriate Division (a) This General Permit as well as the Certificate of Coverage,after it is received. If the stream is named on the NC 3D3(d)list as impaired for sediment- in Lo
%� 24 hours Regional Office per Part I I I,Section C,Item(2)(a)of this permit. • related causes,the permittee may be required to perform additional NOTES iD rn
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6 Ground After each hose 1. The hose of grading installation of perimeter E&SC rn,--.
J ( ) P P g g( P monitoring,inspections or apply more stringent practices if staff
r>- stabilization ofgrading measures,clearing and grubbing,installation of storm (b) Records of inspections made during the previous twelve months. The permittee shall 1. INSTALLATION OF EROSION CONTROL MAT/BLANKETS SHALL ��0,
w measures drainage facilities,completion of all land-disturbing record the required observations on the Inspection Record Form provided by the determine that additional requirements are needed to assure compliance
W with the federal or state impaired-waters conditions.
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x activity,construction or redevelopment,permanent Division or a similar inspection form that includes all the required elements. Use of COMPLY WITH MANUFACTURER'S SPECIFICATIONS.
(b)Oil spills and • Within 24 hours,an oral or electronic notification. The notification
ground`over). electronically-available records in lieu of the required paper copies will be allowed if
2. Documentation that the required ground stabilization release of shall include information about the date,time,nature,volume and
a shown to provide equal access and utility as the hard-copy records. hazardous location of the spill er release.
W measures have been provided within the required p" _ 2. TEMPORARY EROSION CONTROL BLANKET USE ONE 9" ��S "N/ r-
__ timeframe or an assurance that they will be provided as substances per Item
� 3.Documentation to be Retained for Three Years `� CD
U) soon as possible. 1 b-C above
Q All data used to complete the a-N01 and all inspection records shall be maintained for a period ( ) ( ) * ." BIO-STAKE OR SOD PIN (SEE DETAIL). � os
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]
(c)Anticipated • A report at least ten days before the date of the bypass,if possible. z a
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bypasses[40 CFR The report shall Include an evaluation of the anticipated quality and w z
i5ii pt of reizyd�,siiiitii hardened conizi,ete residue in arrordamt W[lh IPFdl 0
z 122.41(m)(3)] effect of the bypass. 2. t „ - ci
O SECTION G ITEM(4) ' 3. PERMANENT EROSION CONTROL BLANKETS USE 12 SOD PIN d F- �� J
0 PART II, (d)Unanticipated • Within 24 hours,an oral or electronic notification. F d�U w Np
w DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT bypasses[40 CFR • Within 7 calendardays,a report that includes an evaluation of the (SEE DETAIL) z
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122.41(m)(3)] quality and effect ofthe bypass. lot perimeter silt fence.
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(e)Noncompliance • Within 24 hours,an Oral or electronic notification. 4- ln;tall temporary concrete washouts per loc
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 with the conditions • Within 7calendardays,a report that contains a description of the altern.4e ncelhod or product is to be U66dr coi your approval auttiority for
Q 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). of this permit that noncompliance,and its causes;the period of noncompliance, MAINTENANCE:
tyi of temporary concrete washouts provided on this detail.
o defective curb or 5idgwalk
Non surface withdrawals from sediment basins shall be allowed only when all of the following criteria have been met: may endanger including exact dates and times,and if the noncompliance has not
health or the been corrected,the anticipated timenoncomplianceisexpectedto Dv not mhoutis for dewafti or CONCRETE WASHOUT STRUCTURE
r2
w a The E&SC Ian authorit has been provided with documentation of the non-surface with 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 not be d1schatged to the itorm drain systern or ilecelyl i surface watets. Liquid waste must MATTING SHALL BE REGULARLY MONITORED, ESPECIALLY
� O p Y p p p CFR 122.41(I)(7)] prevent reoccurrence of the noncompliance.[40 CFR 122.41(I)(6). �-lSCALE: NTS AFTER RAIN EVENTS. ADDITIONAL MATTING SHALL BE
z shall not commence until the E&SC plan authority has approved these items,
6 • Division staff may waive the requirement for a written report on a , ! .. „
(b) The non surface withdrawal has been reported as an anticipated bypass in accordance with Part III ;IIIIIIIIIIIIIIIII
,section C,Item(2)(c)and(d)of this permit, case-by-ease basis. INSTALLED TO REPLACE DAMAGED OR MISSING MATTING
(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 MATERIAL UNTIL VEGETATION HAS BEEN PROPERLY
o properly sited,designed and maintained dewatering tanks,weir tanks,and filtration systems,
;IIIIIIIIIIIIIIIII
o (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, r 4 �_ rancewasconmayrequ ESTABLISHED AND SITE IS ACCEPTED. sEaL i`1 t i I i 1 f 1 i l�,/
(e) Velocity dissipation devices such as check dams,sediment traps,and riprap are provided at the discharge points of all dewatering devices,and 'r NORTH CAROL]NA 1. `� i
f Sediment removed from the dewaterin treatment devices described in Item c above is dis disposed of in a manner that does not cause de deposition of sediment into waters of the United States. rt + �Environmental Quality 1% �;y �A'�.�� ��i z
- . �'11 limits- Post signage on the washout 15211i to identify this locaticnn -_ . ti•.
sand bap i other temporary BiTuctural ("4 EROSION CONTROL MAT 5- Remy"leavings frorn the vrashati at approximately 7596 capacity to limit = `�•¢4SEAL ��-� = w
5-19 31
NCGOI SELF-INSPECTION RECORDKEEPING AND REPORTING EFFECTIVE: 04/01/19 = z
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NOT FOR CONSTRUCTION EC-06
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