SWA000150_Plansheet - Misc. Detail_20220624 (7)

GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH
THE NCGO1 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 NCGO1 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.
SECTION E: GROUND STABILIZATION
Required Ground Stabilization
Timeframes
Stabilize within this
Site Area Description
many calendar
Timeframe variations
days after ceasing
land disturbance
(a) Perimeter dikes,
swales, ditches, and
7
None
perimeter slopes
(b) High Quality Water
7
None
(HQW) Zones
(c) Slopes steeper than
If slopes are 10' or less in length and are
3:1
7
not steeper than 2:1, 14 days are
allowed
-7 days for slopes greater than 50' in
length and with slopes steeper than 4:1
-7 days for perimeter dikes, swales,
(d) Slopes 3:1 to 4:1
14
ditches, perimeter slopes and HQW
Zones
-10 days for Falls Lake Watershed
-7 days for perimeter dikes, swales,
(e) Areas with slopes
ditches, perimeter slopes and HQW Zones
flatter than 4:1
14
-10 days for Falls Lake Watershed unless
there is zero slope
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.
GROUND STABILIZATION SPECIFICATION
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the
techniques in the table below:
T4!mpnraryStahil¢ation
FermanantStabilization
• Tempararygrasssaad cave red withstraw a
• Permanentgrass seed cavered with straw or
other mulches 3ndtackifierz
ather mulchIandtackifiers
• Hydroseedin;
• GeotextilefahricsLuc h as perma nent soil
• Rolled erasion canlmI products with or
reinfo rtement matting
without tempararygrasssead
• Hydras eading
• Apprapriatelyappliedstrawflrctherl'I
• Shrubs oratherpermanent plantings cavered
• Plastiesheeting
with mulch
• Uniform and evenly distrib Lit edgraundtover
suffirien1In restrain erosion
• Structural mathada such m cancreta, alpha It or
retainingwalIs
• Rolled erosion for l productswithgrass Lead
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.
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.
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.
ONSITE CONCRETE WASHOUT
STRUCTURE WITH LINER
q HICH
Q O O Q SUWEBERwtAPON N
a o oa s,Aa s� P., o 0 0 0 D an x
p sly, r�xrr s �10 EANEEOPcsusrn.) 0 C �i i
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q i SECTION B-B
B
SECTION A -A xoeaNs (m_) No�cs
NoIINC DENCEE(1B'k24 MIN.) Nolr�c AL -A- o[Ivax1- 1� a M
c Rrs s�.LL� xanND ora om ScxA [ Flrin lu.LL �ocnnory o[2vTarvo ix
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PLAN ci[-aav'� WASHOUT lions[ HonxEE S TO BE PLAN I_ES Br F £9oI.RO AAE "IxiMxM Ix
BELOW GRADE WASHOUT STRUCTURE ABOVE GRADE WASHOUT STRUCTURE cr
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.
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.
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.
NCGO1 GROUND STABILIZATION AND MATERIALS HANDLING
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 p 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.
F requencg
I respect
Idur i ry nor coal
I n s pretio n rem rd3 m u st include'
bminesEs hoursF
III nain ga Llge
Daily
Daily ra in fal l a coo unls.
main Lained in
Ir no daily rain gauge obserra Liars are made dUri N weekend or
gvodwarking
holiday periods, and no irdividua Fday rainfall inrorrrna LcBn a
order
va ila bit, record the cum ulalivr ra In m-r nl for Lho un-
aurndcd days land Lhis will dclermine if a siLe inspec Lion IS;
nreededl• rays on wh Lh no ra in rail vccu rred shall be reworded as
"aero." The permil.Lee may rue anoLher FairrnroniLorirg device
a roved by Lhe 6lrhion.
IZI E&SC
AL kea3Loriceper
i. IdenLiFcaLon OF Lhe nrealures insp�Led,
10-B IJre.
Ira k-ndar day.
2. Da Lc and L ime o r L he i-pee Lion,
andwilhin 24
3. No me of Lhe p-on prrfo rm i rg Lhe ire pee Lio r,
hours ora rain
4. Indi-aLionorwhelher lh--m= .ures w operalirg
avant Zi.O irch in
propo-rty,
24 hours
S. Dez{r l p L It n G r ma l n Lena n a need ror Lhe Measure,
& Deacr ip L io ra en i dense, and da Le o r m rr ec Lire acL io n s Laken.
III SLo yr Ler
Al_ Iea.l once per
1. He n Li f ica l io n of Lhe dim ha rge ou l ra l:x im peeled,
di -IT. rge
Ira le n der days
2. Ga Le and L ime or L he i ra pec Lion,
ou Lfa II3 ISDO.1
andwilhin 24
I. Nameol LiTepersonperformirg Lheirapec Lion,
hours or rain
4. Eviderceor indicators afsLorrnwaLcr pollution such as oil
event, 10 irch in
sheen. f Ica Li rg o r s us pcnded so l id s o r din ool or a Lin rr
24 hours
5. lndicaLonvrviziblezedrmenl laving Lhezile,
E. D CH Lien, evidrme,and des Levf wrr tctireadions Laken.
141 PeFimeLer of
AL keasl once per
Irwizible Sedlmenlal. on Is [curd ouLSde ziLe lim iz, Lhena record
siLe
7 calendar days
❑[ Lhe rol low irg shall be made:
andwilhin 24
1. Acliora Laken LooLvnuporslabilu-- LI'esedirncnLLhaL has Icfl
hours or rain
lhcsilclimils,
erenl.�i.O inch in
Z. Gesarip Llv rr, rridence. and des le arson rectire avL ions takemand
24 hours
3. .Anexplana Lonas Lv Lheac Llora Laken LomnLrol ruLure
releases.
15I51.rearn30r
ALkea3LorBceper
IrLine ILramorWeLlandIrm inS;e sedvisiblezedlmenLaLlPnora
wet to rd3-i Le
Ira k-n der day.
.Lream tax cis ibk- ins-a.ed lu rbid ily From l he cons L r uc Lion
r oFr. iLe
andwilhin 24
ocLiviLy,Lhena rroordor Lhe lollowing311,all be made:
Ivnc­
hours or rain
1. De Fiplion,tidtnceardda Leol eor-Liaracliorc Laken,and
attesz ibkl
avant i.fl irch in
2. petardsor Lherequired reports LOLhe approprla Le Dircion
24 ho-urz
itnal orrkc- per ParL III,Set Lien C, Vern 121Ial of LhiS permiL.
161 Ground
Arto-reach phase
1. The phaseorgradinS IiMLaIlaLionorper imeLerI&5C
s Lab iIi-Lion
orgrad irg
rne+ax u r ek c ea ri rg a nd g ru b b irg, in. La Ila lion of x Le rm
ax u r es
dr a i r.a g e faci lit its:, co m pleL io n OF a II L nd dis L u r ling
a[LiviLy. Co r6 L rut L i on o r redeye I op memL, perma n enl
gro u nd rove r I .
2. D[currrenLaLion LhaL Lhc requiredground sLahilim Lion
measures have teen pray idedw iLh in Lhe required
Lineframe or anassuranSxr LhaL Lhey will be Providedas
s oon as pass ibis.
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 kept on site and available for
inspection at all times during normal business hours.
Itemto document
documenfratian Requirements
(a) Each E&SC measure has teen installed
Initial and date each E&SC measure on a copy
and dines not slgnifirantly deviate from the
of the approved ERr_SC plan or complete, date
I DcatlD ns, d imens iD n5 and relative elevations
and sign an inspection re pD rt th at lists each
shovin on the approved E&SC plan.
ELK measure ShDwn on the approved E&SC
plan. This doEumeIrritation is required upon the
initial installation Df th a E&SC measures Drif
the E&SC measures are modified after initial
in Sta I Iati o n .
(b[ Aphase a grading has been completed.
Initial and date a copy of the approved E&5C
plan or complete, data and sign an inspection
report tD indicate L:Dmpletion of the
construction phase.
(E) Ground rover is IDEated and installed
Initial and date a Eopy of the approved E&SC
in arEordanEe with the approved E&SC
plan or complete, date and sign an inspection
plan.
report to indicate rnmplianre with approved
ground Eoversperifiriations.
(d[ Th a maintenance and repair
Complete, date and sgn an inspection report.
mquirsmenrsfor all E&SC maasuras
have been performed.
(e[ Corrective actions have teen taken
Initial and date a dopy of the approved E&SC
to E&SC measures.
plan or complete, date and sign an inspection
re port t o i n d i rate th e r o mp I eti on of t h e
corrective action.
2. Additional Documentation to be Kept on Site
In addition to the E&SC plan documents above, the following items shall be kept on the
site and available for 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 twelve months. 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.
3. Documentation to be Retained for Three Years
All data used to complete the a-NOI and all inspection records shall be maintained for a period
of three years after project completion and made available upon request. [40 CFR 122.41]
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.
EFFECTIVE: 04/01 / 191
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,
•
The are less than 25 gallons but cannot be cleaned u within 24 hours
Y g P A
• They cause sheen on surface waters (regardless of volume), or
• They are within 100 feet of surface waters (regardless of volume).
(c) 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.
(d) Anticipated bypasses and unanticipated bypasses.
(e) 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 Department's Environmental Emergency Center personnel at (800)
858-0368.
Occurrence
Reporting TImMrames (After ❑iscover0 and Or her Requirements
(a[ Visible sediment
• UVirhfrr2=_'Farrrs, an oral or elertroniE not'rfiration.
deposition in a
■ Nfithfrr 7 culerrdur Buys, a re port th at Eontai ns a d es cripti on of th e
stream orwetland
sediment and attions taken to addramthe cause of the deposition.
Divisionstaff may waIry etha requ ire mentfor awritten report on a
Caae-bp-Case ba5u.
■ If the stream is named on the NC 303f di list as impaired forsediment-
related rauses,the permittee may be required to perform additional
monitoring, inspections or apply mara stringent prattiras if staff
determine that additional requirements are needed toassure compliance
with the federal Drstate impaired -waters con dition5.
(d[ DiIspills an d
• WirhmIV J7aurs, an oral or elaIronir notification. The notification
release of
shall include information @II the date, time, nature, vDlume and
hazardous
location of thazpillor release.
substances per Item
1(bj-(cj above
(r) Anti dpated
• A repmIt or hm at rdv days before rlre bD[F df the bypo55, ifpas52pi2.
bypasses [40 CFR
The re ports hall include an evaluation of th a anticipated quality and
122.41(m[(3)]
effect of the bypass.
(d[ Unanticipated
• Nfirhfrf2Fhaurs, an oral or electronic notification.
bypasses [40 CFR
• t+Wirhfn 7cuJendardI a reportth at inrludss an evaluation of the
122.41(m[(3)]
qualityand effect of the Iris.
(e[ Noncompliance
• Mrhfri2=_'Favrs, an oral or elertronIE notfiration.
with the conditions
• VVirhfn 7culerrdurduys, a repDrtth at cDntains a description of the
of this permitthat
noncompliance, and its causes; the period of noncompliance,
may endanger
including exact dates and times, and if the nonLDmpliance has not
health Dr the
been corrected, the anti cipate d ti me noncompliance is expected to
environment(40
Eontinue; and stepstaken or planned to reduce, eliminate, and
CFR 122.41(1)(7)1
prsventrearrurrenre of the noncompliance. [40CFR122.41(I)(6).
• ❑hvisionstaff may wafvethe requ irementfar awritten reportan a
case -bp -case basis.
NCGO1 SELF -INSPECTION, RECORDKEEPING AND REPORTING I EFFECTIVE: 04/01/191
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CDC PROJECT NO.:
XXX PERMIT NO. xxx
SHEET
C998