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G r EDIMENTtPUNAND EROSION CONTROL PLAN DESIGNED: SMM G
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1 . SURVEYOR S STAKE LIMITS OF CLEARING AND EROSION CONTROL FEATURES FOR THE PROJECT ENGINEER: 4
INCLUDING STOCKPILE AND WASTE AREAS, a
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2. THE SITE SHALL BE ACCESSED BY THE EXISTING HAUL ROAD. THE ENTRANCE TO THE HAUL ROAD IS _.�,�
ON DOG BROWN ROAD. oRWK, PA W Z W y
3. INSTALL ALL REQUIRED SILT FENCING AND SILT FENCE OUTLETS WHERE SHOWN ON THE PLANS.
101 W. MAW STREET, SUITE 202 Z x a
4. CLEAR AND GRUB AS NEEDED. REMOVE ALL STUMPS AND INERT LANDSCAPING DEBRIS TO A GARNER, NC 27529 Q Na 0
PERMITTED LGID FACILITY. = t1 5. INSTALL BASINS TO THE DIMENSIONS AS SHOWN. THESE BASINS MAY BE LARGER DUE TO SITE PHONE: 919 779-4854 l B
CONDITIONS, BUT IN NO CASE SHALL ANY BASIN BE SMALLER AS INDICATED ON THE PLANS. ALL � >W —
BASINS SHALL BE EQUIPPED WITH A RISER AND BARREL OUTLET SET TO INVERTS AS SHOWN. EACH
OUTLET SHALL HAVE A ROCK APRON COMPOSED OF CLASS B RIP RAP ROCK TO THE DIMENSION St1RVIE.`l.6. I e
EACH ROCK APRON SHALL HAVE A SILT FENCE OUTLET ON THE ON THE DOWNSLOPE SIDE OF THE
APRON. RWK, PA
7. ALL SIDE SLOPES OF ALL BASINS SHALL BE STABILIZED AND EMERGENCY SPILLWAYS SHALL BE
0 101 W. MAIN STREET, SUITE 202
STABILIZED WITH CURLED WOOD MATTING,
I 8. INSTALL ALL DIVERSION DITCHES AND STABILIZE ALL DIVERSION DITCHES WITH THE MATTING REQUIRED
GARNER, NC 27529
I AS SHOWN ON THE PLANS. PHONE: [phone]
9. EACH SEDIMENTATION AND EROSION CONTROL DEVICE SHALL BE INSPECTED EVERY WEEK AND AFTER
EVERY RAINFALL EVENT 1/2" OR GREATER. SEDIMENT THAT HAS ACCUMULATED SHALL BE REMOVER _ RECEIVED
ACCORDING TO THE MAINTNANCE REQUIREMENTS OF EACH DEVICE. IN AREAS WHERE SEEDING IS SHEETS:
REQUIRED, PATCHES OF BARE SOIL SHALL BE STABILIZED. l IEETt7,
10, BERMS SHALL BE CONSTRUCTED AS THE PROJECT BEGINS, AND SHALL BE JOINED AND GRADED INTO SEP 14 1020
THE SLOPES OF THE SEDIMENT BASINS. AS THE SAND MINE IS GRADED DOWN, AND THE SEDIMENT
BASINS WITH RELATED PIPES AND OTHER DEVICES SHALL BE REMOVED ONCE THE GRADES ARE 2 LAND QUALITY` !
FEET BELOW THE BOTTOM GRADE OF THE BASINS. THE BERMS SHALL THEN BE COMPLETED AT MINING PROGRAM
CS CO �/ - E ET
THOSE LOCATIONS.
11. THE INTERIOR OF THE PIT SHALL BE EXCAVATED TO A DEPTH OF APPROXIMATELY 20 FEET WITH
C-1 SITE ANDSURROUNDING AREA
INTERIOR SIDE SLOPES OF 3:1.
C-2 MINING PLAN
A C-3 SEDIMENTATION AND EROSION CONTROL PLAN
C-4 SEDIMENTATION AND EROSION CONTROL PLAN g A
C-5 GRADING PLAN SCE:
OAv- 05-28-2020
D- 1 SEDIMENTATION AND EROSION CONTROL DETAILS SHEET NO.:
D-2 SEDIMENTATION AND .EROSION CONTROL DETAILS
D-3 SEDIMENTATION AND EROSION CONTROL DETAILS CS'
II D-4 SEA IkilENTATION AND EROSION CONTROL DETAILS
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NEW LCID ( I \ \ \ ) I / _ \\\\\I II m
217,702 SF
4.998 AC
f ' MINING \ buAST l I I J / I llllltl
AREA \ \ PILES
\
NOTES:
1. THE SITE SHALL BE ACCESSED BY THE EXISTING HAUL ROAD. rn
( \ \ � ) \ THE ALL SEASON HAUL ROAD IS PART OF THE LCID SITE AND O z
A - — — — — _ _ ( \ \ + U�QlSTUI�/ ( \ \ ��\� NOT INCLUDED IN THE MINE PERMITTING PROCESS. rn
BASIN 2 / / \ \ � a A
05-28-2020
GATE
/0 s � � P, m SHEET NO.:
c; o
1 / m
BERG s�
G
/ /
v
_, = m
I FUTUR <
MINING,
AREA 200 0 200 400 800
SCALE: 1" =200'
8 7 6 5 4 3 2 1

8 7 6 5 �. 4 3 2 7
GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH --- --------- oft
THE NCG01 CONSTRUCTION GENERAL PERMIT f( 13NSITE CONCRETE WASHOUT I �Z�ffi e
Implementing the almlaiii spearifice�rtiioars�mmd6t�Wfims¢Vatcttuuiilxesultintheaodk�nurotivrm EQUIPMENT ANDVEhVC.4F,0 t4';T5%Aires I� STRUCTURE WITH LINER
activity being considered compliant with the Ground Stabilization and Materials Handling 1. Maintain vehicles and equipment to prevent discharge of fluids.
a a <s
sections of the NCG01 Construction General Permit(Sections E and F,respectively). The 2, provide drip pans under any stored equipment. m, .,�,,,, f
permittee shall comply with the Erosion and Sediment Control plan approved by the z o
0
delegated authority having jurisdiction.All details and specifications shown on this sheet 3. Identify leaks and repair as soon as feasible,or remove leaking equipment from the F z m W C
N
may not apply depending on site conditions and the delegated authority having project. August 4, 2011 x a ova
.,
jurisdiction. 4. Collect all spent fluids,store in separate containers and properly dispose as '
llRifd ..-- �• Major Elements :)f ®WC� Construction General Permit �mOUR
hazardous waste(recycle when possible). �• sstval.-. 5j
kffi�vr.uwm vaw•e rhea �P2i'1:4P�w `�"`�`s"+... Ww4�D3
SECTION E:GROUND STABILIZATION 5. Remove leaking vehicles and construction equipment from service until the problem ++g•.piF�ss.+ �..B. §80wo.<w
has been corrected. �T ,,.,� ,0,az°a
Required Ground Stabilization Timeframes uea eat � _oo
Stabilize within this 6. Bring used fuels,lubricants,coolants,hydraulic fluids and other petroleum products i This document contains the major elements of the recently-revised North Carolina Division of Water Quality (DWQ) Construction 2 W�
to a recycling or disposal center that handles these materials. ff ca naoa v un'IT URUMuiE a•m,r M srncn•r
many Calendar mra5u' 7ra91
Site Area Description rimeframe Variations - General Permit(NCGO1)with emphasis placed on those elements that.differ from the previous permit{expiration on August 2,
days after ceasing o S
land disturbance 2011). Since the summary list below cannot contain details of every change, the comglete Permit should be used to assure full
D implementation. See: http://portal,ncdenr.org/web/wq/ws/su/c�onstruction BUILDING MATERIAL AND LAND CLEARING WASTE -
(a) Perimeter dikes, 1. Never bury or burn waste. Place litter and debris in approved waste containers. CONCRETE WASHOUTS p:f�(�OftaLnCt(BriC.OrgfWBb�WC)�WSIStl�C0115tfUC'tlOn D
swales,ditches,and 7 None 2. Provide a sufficient number and size of waste containers(e.g dumpster,trash 1. Do not discharge concrete or cement slurry from the site.
perimeter slopes receptacle)on site to contain construction and domestic wastes. 2. Dispose of,or recycle settled,hardened concrete residue in accordance with local
(b) High Quality Water None 3. Locate waste containers at least 50 feet away from storm drain inlets and surface and state solid waste regulations and at an approved facility. The major change in the Permit from the previous one is the shorter
(HQW)Zones 7 waters unless no other alternatives are reasonably available. 3. Manage washout from mortar mixers in accordance with the above item and in 1) Ground Stabilization* times to apply ground stabilization such as mulch,wheat straw, or
(c) Slopes steeper than If slopes are 10'or less in length and are 4. Locate waste containers on areas that do not receive substantial amounts of runoff addition place the mixer and associated materials on impervious barrier and within grasses, The NC laws and rules relating to the Sediment Act require,
3:1 7 not steeper than 2:1, 14 days are from upland areas and does not drain directly to a storm drain,stream or wetland. lot perimeter silt fence. in most laces, ground stabilization within 21 days, Based on the new
Site Area Stabilization Stabilization Time P gr Y
allowed S. Cover waste containers at the end of each workday and before storm events or 4. Install temporary concrete washouts per local requirements,where applicable. If an EPA requirements and 9-months' work with a permit advisory group,
a -7 days for slopes greater than 50'in provide secondary containment. Repair or replace damaged waste containers. alternate method or product is to be used,contact our approval authority for Description Time Frame Frame Exceptions
y p g p v P P B P v PP Y CTAG,the Division and EPA-developed permit,now contains
length and with slopes steeper than 4:1 6. Anchor all lightweight items in waste containers during times of high winds. review and approval. If local standard details are not available,use one of the two • Perimeter dikes,
Bt PB B ' requirements for ground cover within 14, and in some places, 7 dogs. 'Q
-7 days for perimeter dikes,swales, 7. Empty waste containers as needed to prevent overflow. Clean up Immediately if types of temporary concrete washouts provided on this detail. swales, ditches 7 days None Z N
(d) Siopes.3:1 to 4:1 14 ditches,perimeter slopes and HQW containers overflow. 5. Do not use concrete washouts for dewatering or storing detective curb or sidewalk
and slopes O �
Zones sections. Stormwater accumulated within the washout may not be pumped into or NN
8. Dispose waste off-site at an approved disposal facility. a High i " typ
-10 da s for Falls lake Watershed discharged to the storm drain.system or receiving surface waters. Liquid waste must g Q�.� 2) Building Wastes Handling .\J w
9. On business days,clean up and dispose of waste in designated waste containers: N tb to
$ be pumped out and removed from project. Water(HQW) 7 days None M I--`
-7 days for perimeter dikes,swales, Y.i if) p
6. Locate washouts t leash 50 other
from storm drain inlets and surface waters unless it �_ r� 0) 1
ditches,perimeter slopes and HQW Zones Zones.
(e) Areas with slopes PAINT AND OTHER LIQUID WASTE can be shown that no other alternatives are reasonably available. At a minimum,. i • NO paint or liquid Wastes in stream or storm drains (f)
flatter than 4:1 14 -10 days for Falls Lake Watershed unless 1. Do not dumppaint and other liquid waste into storm drains,.streams or wetlands. If slopes are 1Q or N N � 0)
P q Install protection of storm drain inlets)closest to the washout which could receive 1� 2 r U
there is zero sloe 2. Locate paint washouts at least 50 feet away from storm drain inlets and surface spills or overflow. • Slopes steeper less in length and are • Dedicated areas for demolition, construction and other ,-, r
Note.:After the permanent cessation of construction activities, any areas with temporary 7 days
round stabilization shall be converted to permanent ground stabilization as soon as waters unless no other alternatives are reasonably available. 7. Locate washouts in an easily accessible area,on level ground and install a stone than 3:1 y not steeper than 2:1, wastes must be located 50' from storm drains and streams Z @
practicable but in no case longer than 90 calendar days after the last land disturbing 3. Contain liquid wastes in a controlled area. entrance pad in front of the washout. Additional controls may be required by the 14 s are allowed. unless no reasonable alternatives available. Z Z L> - 0)
4. Containment must be labeled,sized and placed appropriately for the needs of site. approving authority. >•+ [( W 0)
activity. Temporary ground stabilization shall be maintained in a manner to render the • Earthen-material stock
surface stable against accelerated erosion until permanent ground stabilization is achieved. 5. Prevent the discharge of soaps,solvents,detergents and other liquid wastes from B. Install at least one sign directing concrete trucks to the washout within the project 7-days for Slopes piles must be located 50' from storm (�, 2 Z Lei 0)
limits. Post si • Slopes 3:1 or W
construction sites. gnage on the washout Itself to identify location. 14 days greater than 50 feet drains and streams unless no reasonable alternatives Z
9. Remove leavings from the washout when at approximately 75%capacity to limit flatter in length available. W § O O 4
GROUND STABILIZATION SPECIFICATION overflow events. Replace the tarp,sand bags or other temporary structural
Stabilize the ground sufficiently so that rain will not dislodge the soil. Use one of the PORTABLE TOILETS Z
1. Install portable toilets on level round,at least 50 feet awe from storm drains, components when no longer functional. When utilizing alternative or proprietary None • Concrete materials must be controlled to avoid contact with '-' '- �
techniques in the table below: p B y • All other areas surface waters, wetlands, or buffers. O
products,follow manufacturer's instructors. e
streams or wetlands unless there is no alternative reasonably available. If 50 foot (except for Pi
+-
____ Temporarystasluzati__ -,, Permanent Stabilization -, , 10. At the completion le
•Temporary grass seed covered with st,aw or Permanent grass seed covered with straw or offset is not attainable,provide relocation of portable toilet behind silt fence or place p g leavings a and dispose of with slopes flatter 14 days perimeters and
other mulches and tackiffers other mulches and tackifiers on a gravel pad and surround with sand bags. in an approved disposal facility. Fill pit,if applicable,and stabilize any disturbance than 4:1 w
caused b removal of washout. H W Zones 3 Discharges
+ Hydroseeding '+ Geotextile fabrics such as permanent soil 2. Provide staking or anchoring of portable toilets during periods of high winds or in high y ) ges to Federally-listed Waters
+ Rolled erosion control products with or 5 reinforcement matting foot traffic areas. x"`Extensions of time may be approved by the permitting authority
F, without temporary grass seed . Hydroseeding
59 s Appropriately applied straw or other mulch • Shrubs or other permanent plantings covered 3. Monitor portable toilets for leaking and properly dispose of any leaked material' based on weather or other site-specific conditions that make compliance •
pe p Requirements are the same as in previous permit
Plastic sheeting with mulch I Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace impracticable."(Section II.B(2)(b)}
• uniform and evenly distributed ground cover with properly operating unit. { 4RRRiRLRr�,9�3IRttRcbllMLLLMIDIAtisTirs[Dri3 • '>!" t" 'E''hi�f8nt+tlt' ir°'t�le7rlt$t�gt t6 A arch�eteFa.": ",P
sufficient to restrain erosion 1. Store and apply herbicides,pesticides and rodenticides In accordance with label the Director of DWQ determines that other B1NWg provide
C + Structural methods such as concrete,asphalt or restrictions. equivalent protection. DESIGNED: SM M C
retaining wails 2. Store herbicides,pesticides and rodenticides in their original containers with the
*.Rolled erosion control products with grass seed EARTHEN STOCKPILE MANAGEMENT label,which lists directions for use,ingredients and first aid steps in case of 1 DRAWN: SMM
1. Show stockpile locations on plans. Locate earthen-material stockpile areas at least accidental poisoning. APPROVED:. CRP
SO feet away from storm drain inlets,sediment basins,perimeter sediment controls 3, Do not store herbicides,pesticides and rodenticides in areas where flooding is
POLYACRYLAMIDES(PAMS)AND FLOCCULANTS and surface waters unless it can be shown no other alternatives are reasonably possible or where they may spill or leak into wells,stormwater drains,ground water
1. Select flocculants that are appropriate for the soils being exposed during available. or surface water. If a spill occurs,clean area immediately.
construction,selecting from the NC DWR List of Approved PAMS/flocculants. 2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of 4. Do not stockpile these materials onsite. ps ptssautrenfddri$,
2. Apply flocculants at or before the Inlets to Erosion and Sediment Control Measures. five feet from the toe of stockpile. ,`� a�N.31
O A '4F
3. Apply flocculants at the concentrations specified in the NC DWR List of Approved 3. Provide stable stone access point when feasible. August 4;2011 Of'G
HAZARDOUS AND TOXIC WASTE - f
PAMS/Fiocculants and in accordance with the manufacturer's Instructions. 4. Stabilize stockpile within the timeframes provided on this sheet and in accordance
4. Provide pondin area for containment of treated Stormwater before discharging with the approved plan and an additional requirements. Soil stabilization is defined 1. Create designated hazardous waste collection areas on-site. e
g B B P v Major Elements of DWQ Construction General Permit- Continued
offsite, as vegetative, physical or chemical coverage techniques that will restrain accelerated 2. Place hazardous waste containers under cover or in secondary containment. x $
5. Store flocculants in leak-proof containers that are kept under storm-resistant cover erosion on disturbed soils for temporary or permanent control needs. 3. Do not store hazardous chemicals,drums or bagged materials directly on the ground. -; N` A.
or surrounded by secondary containment structures. o y�t•/ M. ,�, '
NCGOI GROUND STABILIZATION AND MATERIALS HANDLING EFFECTIVE: 04/01/19
4) Inspections G) Conditions in Erosion $z Sedimentation Control Plans"
PART III PROJECT
SELF-INSPECTION, RECORDKEEPING AND REPORTING SELF-INSPECTION,RECORDKEEPING AND REPORTING PART III • Same weekly inspection requirements i Designation on the plans where the 7 and 14-day ground
SELF-INSPECTION, RECORDKEEPING AND REPORTING stabilization requirements of the NPDES permit apply
SECTION A:SELF-INSPECTION SECTION B:RECORDKEEPING ' " �
Self-inspections are required during normal business hours in accordance with the table 1.E&SC Plan Documentation " • Same rain gauge&inspections after 0.5" rain event Designation on the plans where basins that comply with the Zsurface-withdrawal requirements of the NPDES permit are Z
below. When adverse weather or site conditions would cause the safety of the Inspection The approved E&SC plan as well as any approved deviation shall be kept ohthe site. The SECTION C:REPORTING q p a�
personnel to be in jeopardy,the Inspection may be delayed until the next business day on approved E&SC plan must be kept up-to-date throughout the coverage under this permit. 1.Occurrences that Must be Reported • Inspections are Only required during "normal business located. ig
which it is safe to perform the Inspection. In addition,when a storm event of equal to or The following items pertaining to the E&SC plan shall be kept on site and available for Permittees shall report the following occurrences: hours" ® ``g
greater than 1.0lnch occurs outside of normal business hours,the self-inspection shall be inspection at all times during normal business hours. (a) Visible sediment deposition In a stream or wetland. t l r
performed upon the commencement of the next business day. Any time when inspections
• Inspection reports must be available on-site during 7) Building Wastes Handling � � �
were delayed shall be noted in the Inspection Record. _ _�.. oft
Item to Document oocumentatio . .> (b) Oil spills if: business hours unless asite-speei#ic exemption is �rl��
(a) Each E&SC measure has been installed Initial and date each E&SCmeasure on a copy • They are 25 gallons or more, approved. • No paint or liquid wastes in stream or storm drains wee
Frequency and does not significantly deviate from She of the approved E&SC plan or complete,date • They are less than 25 gallons but cannot be cleaned Up Within 24 hours, • Records must be kept for 3.years and available upon W ,z/ AMR
Inspect (during normal inspection records must Include: locations,dimensions and relative and sign an inspection report that lists
business hours) shown on the approved E&SC • They cause sheen on surface waters(regardless of volume),or request. • Dedicated areas for demolition construction and other Z aw�a
[1)Rain gauge Daily Daily rainfall amounts. pp plan. E&SC measure shown on the approved E&SC ° MENIrg• Mete"
maintained in If no daily rain gauge observations are made during weekend or plan. This documentation is required upon the I • They are within 100 feet of surface waters(regardless of volume). • Electronically-available records may be substituted wastes located 50' from storm drains and.streams unless IrM n
_ good working holiday periods, and no Individual-day rainfall information Is initial installation of the E&SC measures Or if
under certain conditions. no reasonable alternatives are available. 0
order available,record the cumulative rain measurement for those un- the E&SC measures are modified after Initial { ail•
B attended. days (and this will determine if a site inspection is Installation. �� (c) Releases of hazardous substances in excess of reportable quantities under Section 311 • Earthen-material stockpiles located 50' front storm i ,: B
needed). Days on which no rainfall occurred shall be recorded as of the Clean Water Act(Ref:40 CFR 110.3 and 40 CFR 117.3)or Section 102.of CERCLA
"zero." The permittee may use another rain-monitoring device (b) A phase of grading has been completed. initial and date a copy of the approved E&SC ! . drains unless no reasonable alternatives available.
a raved b the Division. plan or complete,date and sign an Inspection ( (Ref:40 CFR 302.4)or G.S. 143-215.85. $) ]Implementation Of New Permit Conditions
{2) E&SC At least once per Y. identification of the measures Inspected, report t0 indicate Completion of the • Concrete materials must be controlled to avoid contact
Measures 7 calendar days 2. Date and time of the inspection, f a•
construction phase. (d) Antic bypasses p bypasses. • Projects permitted under the previous ermit can with surface waters, wetlands, or buffers.
and within 24 3. Name of the person performing the inspection, patedb asses and unanticipated asses. J Pe p p s� Ub
hours of a rain 4. Indication of whether the measures were operating (c) Ground cover is located and installed Initial and date a Copy of the approved E&SC i continue to follow the previously-permitted conditions. OEM Z Zr
event>1.0 inch In properly, in accordance with the approved E&SC plan or complete,date and sign an Inspection , °"
24 hours S. Description of maintenance needs for the measure, plan. report to Indicate compliance With approved ( (e) Noncompliance with the conditions of this permit that may endanger health or the • Complete applications received prior to August 3,.2011 8) Sediment Basins 0 0
6. Description,evidence,and date of corrective actions taken.
(it)Stwmwater At least once per 1. Identification of the discharge outfalla inspected, ground cover specifications. l environment.
' (3) t oirn At last once p 2. Gate andYmeof the impaction, (aP That maintenance,amt'repair Complete,date and sign an inspection report. can follow conditions of approved application. Ouillet 'C�' tr 0
discharge
{Soar) 7cal.nhin24 a. Date
end time or
performing the inspection, id? Thm ainteraa E&SC eeparr es • Applications received after August 2, 2011 must comply • Stl'CE4nA'eB must Wi'Cltcl§aW lrf'DtFt Ita91n surface " 19
1
and 2.Reporting Timeframes and Other Requirements unless drainage area is less than i acre. d
hoursoferain 4. Evidence of indicators of stormwater pollution such as oil have been performed, with new permit conditions. g U.
event Z:10 inch in sheen,floating or suspended solids or discoloration, After a permittee becomes aware of an occurrence that must be reported,he shall contact cod W
24 hours S. Indication of visible sediment leaving the site, (e) Corrective actions have been taken initial and date a copy of the approved E&SC the appropriate Division regional office within the timeframes and in accordance with the • Use onlyDWQ-approved roved flocculants. ii
6. oescripugn evidence,and date of corrective actions taken. to E&SC measures. plan or complete,date and sign an inspection - other requirements listed.below. Occurrences outside normal business hours may also be Q-fig Lu
(4)Pedmeter of At least once per If visit It swdimentation is frond outside site limits,then a.record report to indicate the completion of the
.reported to the Department's Environmental Emergency Center personnel at(8E)0)
site 7 d wit in days 1.the ions take shall ea made: corrective action. In order for the E&SC Plan to satisfy the conditions of the Construction General permit,it must identify areas where the ground stabilization requirements apply and the
and within 2A 1. Actions taken tp<lean up or stabilize the sedimentthatM1as hh � -i356-0366, � sit
hours of a rain the site limits,
event_>IA inch in 2. Description,evidence,and date of corrective actions taken,and 2.Additional Documentation to be Kept on Site location of the basins where the surface-withdrawal requirements apply.
v
24 hours 3., An explanation as to the actions taken to control future
eleases. In addition to the E&SC plan documents above,the following items shall be kept on the w
(s)Streams or At least once per If the stream or weuand has increased visible sedimentation or a site and available for inspectors at all times during normal business hours, unless the Octurretice Re ing Timerrames(After Discovery)and Other Requirementsel
wetlands onsite 7 calendar days stream has visible increased turbidity from the construction Division provides a site-specific exemption based on unique site conditions that.make dela)Visible sediment + Within 24 hours,an oral or electronic tha contains
u
g
g or offsite and within 24 activity,then a record of the followingshall be made: deposition or Ina + Within 7 calendar days,a n to ad ref contains a description of the
R this requirement not practical:
(where hours of a min 1. Description,evidence and data of corrective a4tlorNftaken,and stream or wetland sediment and actions taken to address the cause of the deposition•
s
accessible) event x 1:0 inch in 2. Records of the required reports to the appropriate Division Division staff may waive the requirement for a written report on a
�__� q p Document prepared by the Division of Water Quality 2
a4 nours Regi;onal___per Part au,section c,¢em lz)fa)of tins rma. (a) This General Permit.as well as the Certificate of Coverage,after it is received. Casa-by-case basis.
(0)Ground After each phase 1. The phase of grading(installation of perimeter E&SC + If the stream is named on the NC 303(d)list as impaired for sediment-
stabilization of grading measures,clearing and grubbing.installation of storm (b) Records of inspections made during the previous twelve months. The permittee shall
related causes,the permittee may be required to perform additional
measures activity,construction
on or redevelopment,
of all land-disturbing $.
k activity,consiructidn or redevelppment,permanent record the required observations on the Inspection Record Form provided by the monitoring,inspections or apply more stringent practices if staff
ground cover). Division or a similar inspection form that includes all the required elements. Use of determine that additional requirements are needed to assure compliance c
2. Documentation that the required ground stabilization electronically-available records in lieu of the required paper copies will be allowed if with the federalnrstate Im iced-waters conditions.
measures have been provided within the required shown to provide equal access and utility as the hard-copy records, (b)Oil spills and . Within 24 hours,an oral or electronic notification. The notification /
4
w
tlmeframa or an assurance that hey wall be provided as 3. Documentation to be Retained for Three Years release of shall include information about the date,time,nature,volume and
soon as ossibfe, hazardous location of the spill or release.
All data used to complete the a-NOI and all.inspection records shall be maintained for a period
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] substances per Item
I(b)-(c)above p
:. ic)Anticipated + .A report at least ten dogs before the dote of the bypass,gposslble. N
PART H,SECTION G,ITEM(4) bypasses(40 CFR The report shall include an evaluation of the anticipated quality and 0 a
DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT 122.41(m)(3)) effect of the bypass. fp rr�
A (d)Unanticipated • Within 24 hours,an oral or electronic notification. 5
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 bypasses(40 CFR quaWitlify andcalendareffect
of th days,e
a report that includes an evaluation of the taJ A
p B 122.41(m)13)j ualit and effect ofthe bypass,
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), e)Noncompliance e Within 24 hours,an oral or electronic nouficatlon. a
Non-surface withdrawals from sediment basins shall be allowed only when all of the following criteria have been met: with the conditions , Within 7colendardays,a report that contains a description of the
SCALE:
of this permit that noncompliance,and its causes;the period of noncompliance,
(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 may endanger including exact dates and times,and if the noncompliance has not DATE, 05-28-2020
shall not commence until the E&SC plan authority has approved these Items, health or the been corrected,the anticipated time noncompliance Is expected to 9
(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, env ronment[ao continue;and steps taken or planned to reduce,eliminate,and m SHEET NO.:
CfR 122.41(1)(7}) prevent reoccurrence of the noncompliance.[40 CFR 122A1(I)(e). �
(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 + Division staff may waive the requirement for a written report On a 00 m n
properly sited,designed and maintained dewatering tanks,weir tanks,and filtration systems, case-by-case basis. _
m
(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, A >
Velocity dissipation devices such as check dams,sediment traps,.and riprap are provided at the discharge points of all dewatering devices,and Ill
D N C
�Gt r-
(a) 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. z < o
NCGO1 SELF-INSPECTION, REC;C SEEPING AND REPC_)RTING EFFECTIVE: 04/01/19
g 7 6 5 4 3 2
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8 7 4
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MAINTENANCEm555®
.v_.._......_...._..____ ALL EROSION AND SEDIMENTATION CONTROL MEASURES SHALL BE INSPECTED WEEKLY AND AFTER EACH RAINFALL EVENT
EXCEEDING 0.5" OR GREATER, INSPECTED PRACTICES INCLUDE BUT ARE NOT LIMITED TO: nwo a
� d
SEEDING MIXTURE 1. TEMPORARY GRAVEL CONSTRUCTION ENTRANCE/EXIT AND PROXIMITY: 3I� w-
w€a D SPECIES (LB/ACRE) �
MAINTAIN THE GRAVEL PAD IN A CONDITION TO PREVENT MUD OR SEDIMENT FROM LEAVING THE CONSTRUCTION SITE. D
GERMAN MILLET 40 T01 Op H WIDTH THIS MAY REQUIRE PERIODIC TOP DRESSING WITH 2-INCH STONE. AFTER A RAINFALL, IMMEDIATELY REMOVE ALL
SEEDING NOTES QUARRY SIDE OUTSIDE OBJECTIONABLE MATERIALS SPILLED, WASHED, OR TRACKED ONTO ROADWAYS.
IN THE PIEDMONT AND MO UNTAINS, A SMALL-STEMMED SUDANGRASS MAY BE SUBSTITUTED AT A RATE OF 50 LB/ACRE. ' SLOPE TO INTERIOR 2.2. CHECK DAMS:
SEE DETAIL THIS SHEET- ►
SEEDING DATES _ CHECK DAMS AND CHANNELS SHALL BE INSPECTED WEEKLY AND AFTER 0.5" (OR GREATER) RAINFALL EVENTS AND
ANY NECESSARY REPAIRS SHALL BE MADE. SEDIMENT, STRAW, LIMBS OR OTHER DEBRIS SHALL BE REMOVED FROM
APRIL 15 TO AUGUST 15 2 I THE CHANNEL.
SOIL AMENDMENTS f 30ft. MAX. ADD STONES TO THE DAM AS NEEDED.
EARTH BERM FOLLOW RECOMMENDATION OF SOIL TESTS OR APPLY 2,000 LB/ACRE GROUND AGRICULTURAL LIMESTONE AND 750 1 I HEIGHT
3. SILT FENCE AND FABRIC:
DITCH BLOCK LB/ACRE 10-10-10 FERTILIZER. Z N
ANCHOR STAKE INSPECT SEDIMENT FENCES EACH
WEEK AND AFTER EACH RAINFALL. MAKE ANY NECESSARY REPAIRS IMMEDIATELY. ,.� 1 W
MULCH TEMP. EARTH SHOULDER BERM APPLY 4,000 LB/ACRE GRAIN STRAW. ANCHOR BY TACKING WITH ASPHALT, NETTING OR A MULCH ANCHORING TOOL. A FENCE FABRIC THAT HAS COLLAPSED, TORN DECOMPOSED OR BECOME INEFFECTIVE SHALL BE REPLACED >►h•�`6,�d
L+1 N CO fO
TEMP. SHOULDER DISK WITH BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL. SECTION THRU BERM LESS THAN 30ft. IN HEIGHT IMMEDIATELY. [- O
BERM DITCH 12" ANCHOR STAKE
MIN. EXTEND DRAIN AS REQUIRED TO MAINTENANCE SEDIMENT DEPOSITS SHALL BE REMOVED. ANY DAMAGE TO THE SILT FENCE SHALL BE REPAIRED.
FINISHED EMBANKMENT REFERTILIZE IF GROWTH IS NOT ADEQUATE. RESEED, REFERTILIZE AND MULCH IMMEDIATELY FOLLOWING EROSION OR 4. SILT FENCE TRAPS: 2 U 1\ ]\OTHER DAMAGE. z
TEMP. EARTH SHOULDER BERM INSPECT THE BARRIER AFTER EACH RAIN, REMOVE SEDIMENT WHEN HALF FULL TO PROVIDE Z a 0
�\ 1IN \ O MAX. 10ft. MIN.
MIN. 7 SEEDING MIXTURE TOP WIDTH ADEQUATE STORAGE VOLUME FOR SUBSEQUENT RAINS,
NATURAL GROUND LIN ELBOW SPECIES (LB/ACRE) QUARRY SIDE OUTSIDE
EARTH BERM DITCH B]BERM
RYE(GRAIN) 120 �- °�' UPON STABILIZATION OF DRAINAGE AREA, REMOVE ALL MATERIALS AND ANY UNSTABLE SOIL, EITHER SALVAGE OR mom► Z'
TEMP. SHOULDER TCH TEMPORARY SLOPE DRAIN 2 DISPOSE OF PROPERLY. BRING DISTURBED AREA TO PROPER GRADE, THEN SMOOTH AND COMPACT IT. STABILIZE w
Ld
SEEDING DATES 5ft. MIN. ALL BARE AREAS AROUND THE TRAPS AND INLETS. •tr. z X,
5' MIN ANCHOR STAKE BENCH WIDTH 1 LFJ Q O 4
STAGE BUILDUP OF FILL ELBOW AUGUST 15 TO DECEMBER 15 20ft, MAX. 5. BASIN, PIT AND TRAP INLET AREAS: Z 0
J� BENCH HEIGHT O D
NOTE: -� ,.-,- SOIL AMENDMENTS CHECK INLET AREAS FOR EXCESSIVE EROSION OR BLOWBY USE MATTING,
To
OF FILL '` ':'!:'' _ 2 TARP OR STONE TO STABILIZE PROBLEM AREA AND RETURN TO ORIGINAL DIMENSIONS. z *--
ANCHOR STAKES 30" LONG FOLLOW RECOMMENDATION OF SOIL TESTS OR APPLY 2,000 LB/ACRE GROUND AGRICULTURAL LIMESTONE AND 9,000 I �� (J.I
AND SET MINIMUM 12" DEEP. LB/ACRE 10-10-10 FERTILIZER. 1 20ft. MAX. 6. SEDIMENT PITS AND TRAPS:
CLASS "B" STONE E SILT .I I A ir59, Mfiifi l SEDIMENT SHALL BE REMOVED FROM THE STRUCTURE AND THE STRUCTURE SHALL BE RESTORED TO ITS ORIGINAL
BASIN TYPE B. SEE NOTES. MULCH
APPLY 4,000 LB/ACRE GRAIN STRAW. ANCHOR BY TACKING WITH ASPHALT, NETTING OR A MULCH ANCHORING TOOL. DIMENSIONS WHEN 1.0' OF SEDIMENT HAS ACCUMULATED IN THE STRUCTURE.
A DISK WITH BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL.
MAINTENANCE
SECTION THRU BERM MORE THAN 30ft. IN HEIGHT THE SEDIMENT SHALL BE REMOVED WITH TRACK HOE FROM TOP OF EMBANKMENT.
C REPAIR AND REFERTILIZE DAMAGED AREAS IMMEDIATELY. TOPDRESS WITH 50 LB/ACRE OF NITROGEN IN MARCH. IF IT DO NOT PLACE EQUIPMENT AT BOTTOM OF SLOPE AND DO NOT ENCROACH UPON WETLAND OR BUFFER AREAS,
S NECESSARY TO EXTEND TEMPORARY COVER BEYOND JUNE 15, OVERSEED WITH 50 LB/ACRE KOBE LESPEDEZA IN DESIGNED: SMM C
NOTES: LATE FEBRUARY OR EARLY MARCH.
DISPOSE OF THE MATERIAL OFF-SITE AND REPLACE ANY CONTAMINATED GRAVEL THAT WAS REMOVED. THE
STRUCTURE AND ANY BAFFLES SHALL BE INSPECTED FOR DAMAGE AND REPAIRED ACCORDINGLY. DRAWN: SMM
1. OPEN END PIPE WITH SUMP AND MINIMUM SETBACK AND PROPER COMPACTION IS AN ACCEPTABLE aft.
INLET TREATMENT FOR STAGED CONSTRUCTION WHEN NOT LEFT IN PLACE FOR MORE THAN 30 DAYS. SEEDING MIXTURE 7. SEDIMENT BASINS: APPROVED: CRP
2. AT INLETS A STANDARD T-SECTION MAY BE INSTALLED FOR MULTI-DIRECTION FLOW AND ELBOWS SPECIES RA7E(Ib/acre)
FOR SINGLE-DIRECTION FLOW AS DIRECTED. RYE (GRAIN) 120 �� FLOW SEDIMENT BASINS SHALL HAVE A CLEAN-OUT MARK APPROXIMATELY 2.0' BELOW THE BOTTOM OF THE RISER WEIR.
3. EXTEND SLOPE DRAINS TO BOTTOM OF SLOPE, SEDIMENT BASINS AND EROSION CONTROL MEASURES, KOBE LESPEDEZA 50 1 ft. SEDIMENT SHALL BE REMOVED FROM THE BASIN AS DIRECTED ABOVE.
4. USE CLASS B STONE FOR EROSION CONTROL AT OUTLET LOCATIONS, SILT BASINS AND OTHERS ••�p,a.M"',...
»
EROSION CONTROL DEVICES MAY ALSO BE UTILIZED TO PREVENT SCOUP AT OUTLET LOCATIONS. OMIT ANNUAL LESPEDEZA WHEN DURATION OF TEMPORARY COVER IS NOT TO EXTEND SEDIMENT BASINS SHALL BE INSPECTED WEEKLY AND AFTER EACH RAINFALL EVENT 0.5" OR GREATER. REPAIRS ��0!%% A CAS 'I,
5. USE MAXIMUM SLOPE DRAIN SPACING OF 200ft MEASURED ALONG TOP OF SLOPE. BEYOND JUKE. DETAIL SHALL BE MADE IMMEDIATELY. ®4,®FeS97" .•,_
SEEDING DATES INSPECT THE EMBANKMENT, SPILLWAYS, AND OUTLET FOR EROSION DAMAGE, THE EMBANKMENT SHALL BE Z2F.q P yam
A small berm shall be constructed along top INSPECTED FOR PIPING AND SETTLEMENT. ALL NECESSARY REPAIRS SHALL BE MADE IMMEDIATELY. ALL TRASH i
AND OTHER DEBRIS SHALL BE REMOVED FROM THE RISER AND POOL AREA.DECEMBER 1 TO APRIL 15 of berm to prevent runoff along slopes. 4
NOTES:
SOIL AMENDMENTS SKIMMERS SHALL BE INSPECTED ONCE PER WEEK AND AFTER EACH RAINFALL. THEY SHALL BE ABLE TO FLOAT AT •` •._
FOLLOW RECOMMENDATIONS OF SOIL TESTS OR APPLY 2,000 lb/acre GROUND 1. SLOPES SHALL BE TRACKED WITH A DOZER DURING CONSTRUCTION TO AID IN THE ALL TIMES, AND SHALL REST ON THE WATER SURFACE IN ORDER TO DE-WATER THE BASIN FROM THE TOP OF THE 9 'RON.
ESTABLISHMENT OF VEGETATIVE COVER. TERESURF CE. IN THE AT NO TIME
SHALL A EVE THAT ER SKIMMER
REST
ON I THE FLOOR N THE BASIN ARE DEPL OBASIN.
AND SHALL REST ON A y°° e°Meue MULCH 2. ALL EXPOSED AREAS SHALL BE STABILIZED BY ESTABLISHING PERENNIAL VEGTATIVE COVER WITH cA
APPLY 4,000 lb/acre STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT, NETTING OR A MULCH ANCHORING TOOL. SEED. B. SKIMMER BASINS:
A DISK WITH BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL. 3. SLOPE DRAINS SHALL BE INSTALLED ON BERMS OVER 30' HIGH. BAFFLES SHALL BE INSPECTED ONCE A WEEK AND AFTER EACH RAINFALL. REQUIRED REPAIRS SHALL BE MADE PROJECT
MAINTENANCE IMMEDIATELY.
REFERTILIZE IF GROWTH IS NOT FULLY ADEQUATE. RESEED, REFERTILIZE AND MULCH IMMEDIATELY FOLLOWING EROSION
OR OTHER DAMAGE. BE SURE TO MAINTAIN ACCESS TO THE BAFFLES. ANY BAFFLES WITH COLLAPSED, TORN, DECOMPOSED OR ARE
NO LONGER EFFECTIVE SHALL BE REPLACED IMMEDIATELY.
SEDIMENT DEPOSITS SHALL BE REMOVED WHEN THE BASIN IS 40% FULL. BAFFLES SHALL NOT BE DAMAGED,
TEMPORARY SLOPE DRAIN FOR BERMS TEMPORARY SEEDING SCHEDULE OVERBURDEN STOCK PILE AREA AND VISUAL BARRIER BERM DETAILS AND ANY BAFFLES DAMAGED IN THE SEDIMENT REMOVAL PROCESS SHALL BE REPLACED IMMEDIATELY. IN NO
CASE SHALL THE SEDIMENT DEPTH EXCEED 40% OF THE DESIGN STORAGE DEPTH. ^'
h
PERMANENT SEEDING SCHEDULE FOR REMAINING SITE 9. TEMPORARY DIVERSION DITCHES:
TEMPORARY DIVERSION DITCHES SHALL BE INSPECTED ONCE A WEEK AND AFTER EVERY RAINFALL. SEDIMENT IN
THE FLOW AREA SWILL BE REMOVED IMMEDIATELY AND ANY NECESSARY REPAIRS TO THE DIVERSION RIDGE SHALL
COMPACTED PERMANENT SEEDING SCHEDULE BE MADE. A
rmu
SHOULDERS, SIDE DITCHES SLOPES (MAX. 3;1) OUTLETS SHALL BE INSPECTED AND REPAIRS MADE IMMEDIATELY. LU nL-
�° DATE: 10. SEEDING, FERTILIZING, AND MULCHING: SEEDED AREAS SHALL BE INSPECTED FOR FAILURE AND NECESSARY
STEEP CUT OR - - - - - - '- - TYPE: PLANTING RATE: ,
FILL SLOPE - -•- REPAIRS AND RE-SEEDING SHALL BE MADE WITHIN THE SAME SEASON,
AUG. 15-NOV. t TALL FESCUE 300 LBS./ACRE �
B NOV. 1-MARA TALL FESCUE 300 LBS./ACRE 11. OUTLET STABILIZATION APRONS (RIP-RAP ROCK APRONS); qL I to
2:1 SLOPE (MAX) k ABRUZZI RYE 25 LBS./ACRE d �
MAR.1-APR.15 TALL FESCUE 300 LBS./ACRE INSPECT RIP-RAP OUTLET STRUCTURES WEEKLY AND AFTER 0.5" RAINFALL (OR GREATER) EVENTS. REPAIR ANY ''
APR.15-JUN.30 HULLED COMMON BERMUDA 25 LBS./ACRE EROSION AND REPLACE ANY DISLOGED STONES,
JULA-AUG.15 TALL FESCUE AND 120 LBS./ACRE I
CROSS SECTION **• RO MILLET 35 LBS./ACRE I
'**OR SORGHUM-SUDAN HYBRIDS 30 LBS/ACRE
SLOPES (3:1 TO 1-1)
MAR.1-JUNE 1 SERICEA LESPEDEZA (SCARIFIED) 50 LBS./ACRE 0
y� h
POSITIVE GRADE 1.0% MAX. z (MAR.1-APR.15) ADD TALI FESCUE 120 LBS./ACRE p
IN CHANNELS, ROLL OUT STRIPS OF NETTING UPSLOPE TOE (MAR.1-JUN.30) OR ADD WEEPING LOVEGRASS 10 LBS./ACRE CFO Q"
PARALLEL TO THE DIRECTION OF FLOW AND (MAR.1-JUN.30) OR ADD HULLED COMMON BERMUDA GRASS 25 LBS./ACRE 0
AND OVER THE PROTECTIVE MULCH o JUN.1-SEP.1 ***TALL FESCUE AND 120 LBS./ACRE Y"
***BROWNTOP MILLET 35 LBS./ACRE
SIDE SLOPES *"OR SORGHUM-SUDAN HYBRIDS 30 LBS./ACRE F
2:1 (MAX.) SEPJ-MAR.9 SERICEA LESPEDEZA (UNHULLED-UNSCARIFIED) 70 LBS./ACRE
AND TALL FESCUE 120 LBS./ACRE
\ \ \ \ \ (NOV.1-MAR.1 RYE 25
D ZI ACRE
CONSULT CONSERVATIONENGNE ENGINEER OR SOIL CONSERVATION SERVICE FOR ADDITIONAL
\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ INFORMATION CONCERNING OTHER ALTERNATIVES FOR VEGETATION OF DENUDED AREAS. THE a
\\ \ \ \ \ \ \ \ \ \ ABOVE VEGETATION RATES ARE THOSE WHICH DO WELL UNDER LOCAL CONDITIONS; OTHER
SEEDING RATE COMBINATIONS ARE POSSIBLE. w
R• STEEP CUT OR FILL SLOPE ***TEMPORARY - RESEED ACCORDING TO OPTIMUM SEASON FOR DESIRED PERMANENT c
Z40 VEGETATION. DO NOT ALLOW TEMPORARY COVER TO GROW OVER 12" IN HEIGHT BEFORE
MOWING, OTHERWISE FESCUE MAY BE SHADED OUT, LEGEND
JOIN STRIPS BY ANCHORING
AND OVERLAPPING
ANCHOR NETTING IN PLAN VIEW
6" TRENCH DIVERSION SWALE
0
--sr -SF -sr - SILT FENCE a
CONSTRUCTION SPECIFICATIONS: SE DB D PREPARATION �/` o
0.20'(0.06M] 1. RIP THE ENTIRE AREA TO FOUR INCHES DEPTH x{%�` � , � W MATTING D.ao'[o.1zM] • • • • 4 1. REMOVE AND PROPERLY DISPOSE OF ALL TREES, BRUSH, STUMPS AND OTHER DBJECTIONALE MATERIAL.
2. ENSURE THAT THE MINIMUM CONSTRUCTED CROSS-SECTION MEETS ALL DESIGN REQUIREMENTS. 2. REMOVE ALL LOOSE ROCK, ROOTS, AND OTHER OBSTRUCTIONS LEAVING SURFACE REASONABLY SMOOTH AND a
UNIFORM.. CHI SILT FENCE OUTLET Z
3. ENSURE THAT THE TOP OF THE DIKE IS NOT LOWER AT ANY POINT THAN THE DESIGN ELEVATION PLUS AVAILA COMPACTED AREAS AND SPREAD TOPSOIL THREE INCHES DEEP OVER ADVERSE SOIL CONDITIONS, IF o
• • • • THE SPECIFIED SETTLEMENT. z a
0.IT[O.oaM] 4. PROVIDE SUFFICIENT ROOM AROUND DIVERSIONS TO PERMIT MACHINE RE-GRADING AND CLEANOUT.
• • • 4. APPLY LIME AND FERTILIZER ACCORDING TO SOIL TESTS, OR APPLY 4,000 LB/ ACRE GROUND AGRICULTURAL F w
5. VEGETATE THE RIDGE IMMEDIATELY AFTER CONSTRUCTION, UNLESS IT WILL REMAIN IN PLACE LESS THAN OUTLET STABILIZATION (RIP RAP ROCK APRON) w A
A 0.2T[0.08M] LIMESTONE AND 9,000 LB/ACRE 70-10-90 FERTiL12ER.
• ® i • 30 WORKING DAYS. 5. CONTINUE TILLAGE UNTIL A WELL-PULVERIZED, FIRM, REASONABLY UNIFORM SEEDBED IS PREPARED FOUR INCHES190
• I 0.13'(0.04M1 DEEP. a
NOTE: THE DIVERSION SWALE TO BASIN 1 SHALL HAVE A MINIMUM BASE WIDTH OF 20 FEET. OTHER 6. SEED
ONG FRESHLY PREPARED SEEDBED AND COVER SEED LIGHTLY WITH SEEDING EQUIPMENT OR CULTIPACK
• • • • DIVERSION WAL S SHALL HAVE A MINIMUM BASEWIDTH OF 10 FEET. ALL DITCHES SHALL BE 7, MULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULCH. APPLY 4,000 LB/ACRE GRAIN STRAW OR EQUIVALENT
SCALE:
STABILIZED WITH CURLED WOOD MATTING, COVER OF ANOTHER SUITABLE MULCH. ANCHOR STRAW BY APPLYING 0.02 TO 0.05 GAL/SQUARE YARD OF ASPHALT DATE' OrJ�"Z�®ZOZO
® ® ® BINDING MATERIAL TO ASSURE THAT THE TEMPORARY MULCH IS PROPERLY HELD IN PLACE. ALTERNATE ANCHORING 3.6 STAPLES PER SQ.YD. MAINTENANCE: METHODS ARE NETTING, ROVING OR BY CRIMPING WITH A MULCH ANCHORING TOOL. A DISK WITH BLADES SET
INSPECT TEMPORARY DIVERSIONS ONCE A WEEK AND AFTER EVERY RAINFALL, IMMEDIATELY REMOVE SEDIMENT NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL. SHEET NO.:
8. INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR RESEEDINGS WITHIN THE PLANTING SEASON, IF
SCURLED WOOD MATTINGoR REPAIRFROM S AS NEEDELOW D WHEN AND RTHEI AREA PROTEC ED R THE DIVERSION RIDGE.
PERMANENTLY LSTABILIZEDY CHECK � RE OVE THEUTLETS AND MRIDGE AKE LAND MELY SEEDING RATES STANDSIBLE. IF SHOULD BE OVER 60% DAMAGED, REESTABLISH FOLLOWING ORIGINAL LIME, FERTILIZER AND Z .
cr
CHANNEL TO BLEND THE NATURAL GROUND LEVEL AND APPROPRIATELY STABILIZE IT. 9. REFERTILIZE IN THE SECOND YEAR UNLESS GROWTH IS FULLY ADEQUATE. MAY BE MOWED ONCE OR TWICE A YEAR, 5E p v M
BUT MOWING IS NOT NECESSARY. RESEED, FERTILIZE, AND MULCH DAMAGED AREAS IMMEDIATELY.
UNLESS OTHERWISE NOTED, ALL DITCHES SHALL BE LINED WITH CURLED WOOD MATTING, UNLESS OTHERWISE NOTED, ALL DITCHES SHALL BE LINED WITH CURLED WOOD MATTING. M
SINGLE SIDED. ALL DOUBLE-SIDED BLANKETS SHALL BE STAPLED IN THE SAME METHOD 0 > e G
AS CURLED WOOD MATTING. 7D -I o Ill
; {
CURLED WOOD MATTING TEMPORARY DIVERSION DITCH P�R�n,arIF I,IT C�Fnlr�r_ cru�F1II-c-
8 7 & 5 4 3 2
1

8 7 6 5 4 3 I 2 , 1
ao W=�a
8' MAX. Z'ha
VARIABLE AS DIRECTED BY THE ENGINEER
h yayyy =gvg
r=-g�USZ�
'LJgQ
MIN. 12-1/2 GA. =zOow
INTERMEDIATE
MIN. 10 GA. WIRES 5
LINE WIRES '4r�>Iks
SI FEN E F RICU-z
I ALLE TO ECO D ? � ��j
wi
Ys'r�hWka
GRADE SS
D
D
f = APRON THICKNESS ID# do La, FT. W, FT. t, IN. RIP-RAP CLASS HUM
W APRON
IDTH
3d A A a = LENGTH OFRIP RAP APRON OS#1 42" 24 28 24 B
FRONT VIEW do W d, = PIPE DIAMETER
OS#2 18" 20 22 24 B
STEEL POST _
B
WOVEN WIRE FABRIC OS#3 15" 18 20 24
NOTE: SILT FENCE GEOTEXTILE FABRIC PLAN VIEW If '® Z
-USE SILT FENCE ONLY WHEN DRAINAGE AREA § FOR REPAIR OF SILT L W ON IS t0
DOES NOT EXCEED 1/4 ACRE AND NEVER IN N FILL SLOPE
AREAS OF CONCENTRATED FLOW '� m FENCE No. 57 WASHED'STONE.USEO a L LO ;' O
r 'GRADE F�NCENSHPROTECTINGtLT NOTES: U? N
-END OF SILT FENCE NEEDS TO BE TURNED UPHILL.
.r:'
1�- CATCH BASIN.
1. ALL OUTLET STABILIZATION APRONS INSTALLED ON THE SITE SHALL HAVE THE OVERLAYING SOIL t }- U
VER
OVER MIN. - } REMOVED FROM EACH OUTLET STABILIZATION SITE BEFORE INSTALLING THE RIP-RAP APRON. Z Q1
t4 EXTEND WIRE 6' MIN. INTO TRENCH ANY FILL THAT MUST BE ADDED SHALL BE COMPACTED TO THE DENISTY OF THE Z
I AND
BY ENGINEER + SURROUNDING UNDERLYING MATERIAL. INCREASING THE THICKNESS OF THE RIP-RAP APRON q L i
SECTION A-A SHALL ONLY BE DONE AT THE DIRECTION OF THE ENGINEERS. I W Z
2 Z "
5i1.; 11E'�V 2. THE APRON SHALL HAVE ZERO GRADE WITH NO OVERFILL AT THE END. THE TOP OF THE y
Z
DOWNSTREAM END SHALL BE LEVEL WITH THE RECEIVING AREAS. Z ? U 0= LL
FILTER FABRIC . 0
SHALL BE USED 3. THE APRON SHALL BE INSPECTED WEEKLY AND AFTER ALL RAIN EVENTS. DAMAGED OR O
® Z 0
ERODED DOWNSTREAM SHALL BE REPAIRED AND ANY MISSING RIP-RAP SHALL BE REPLACED. W
STANDARD TEMPORARY SILT FENCE OUTLET STABILIZATION DETAIL
C DESIGNED: SMM C
4' MIN. I SILT FENCE EMERGENCY SPILLWAY CONSTRUCTED OVER
DRAWN: SMM
UNDISTURBED GROUND AND ARMORED _ — pF�
. .. . SEDIMENT.. ��� MENT TRAP WITH RIP RAP
.. VEDP
ee'sr�eeRarearrr.
/ APPROVED:
\ OaF Es s%; Y
1 DISSIPATER PAD
\ RIP RAP 5
TOP OF SILT FENCE NOTES: ° 840
MUST BE AT LEAST 1' 1. PROVIDE ALL CALCULATIONS FOR ORIFICE DESIGN. . `f '
ABOVE THE TOP OF - \ . .r — . . — ----► t O
2 PROVIDE ANTI FLOTATION BLOCK CALCULATIONS. �. c���
THE WASHED STONE -- 3. ALL SEDIMENT BASINS SHALL HAVE 2.5: 1 SIDE "IetA Beres ",rr
SLOPES.
STEEL FENCE POST 4. WEIRS FOR ALL SEDIMENT BASINS SHALL HAVE OUTLET PIPE VET SCREEN ACCESSIBLE THROUGH DOOR ' yyJ
WIRE FENCE FRONT VIEW 3: 1 SIDE SLOPES. — _ PROJECT
HARDWARE CLOTH BURY WIRE FENCE, 5. ALL DISCHARGING PIPES SHALL BE EQUIPPED WITH _ — — — — — EARTH DAM
FILTER FABRIC, FLARED-END SECTIONS.
AND HARDWARE
FILTER OF #57g STEEL FENCE POST CLOTH IN TRENCH PLAN VIEW z
WASHED STONE
SET MA 2' APART d
° 1� CMP TRASH RACK & ANTI—VORTEX DEVICE FLOAT
°c 3' FILTER FABRIC MIN. 18' INTO SOLID PAINTED RED CLEANOUT MARK RISEV FLEXIBLE JOINT I 14
g�$o ON GROUND GROUND LOCATED 40% UP RISER PIPE (RADIATOR HOSE) q 0
FLOW �°O�°°�°$ SKIMMER TOP OF DAM oj a,
—+ �b�gog °°�° o WATER LEVEL DURING STORM \ - - OUTLET END: CONNECTIONCk
,'
q°p�o `b ° oo —I EMERGENCY SPILLWAY ELEVATION TO OUTLET PIPE OR RISER BARREL PIPE LONGER THAN SHOWN.
_ SEDIMENT STORAGE '
AREA MINIMUM SLOPES 2-1/2 : 1
BURY WIRE FENCE BURY 6" OF UPPER EDGE OF -I I� EARTH DAM T .F
AND HARDWARE CLOTH FILTER FABRIC IN TRENCH _ &�
— y p rQ
0 f
B
SECTION VIEW 3' THICK CONCRETE BLOCK
I W
x
ANTI—FLOTATION DEVICE DISSIPATER PAD RIP RAP
ANTI—SEEP COLLAR _
VI�Vsj SEC ,Lrl um
CMP OUTLET PIPE/ —! I f I I I I—I 1 I Siam z
1. REMOVE SEDIMENT WHEN HALF OF STONE OUTLET IS COVERED.
N I^^
2. REPLACE STONE AS NEEDED TO ENSURE DEWATERING.
U.
STANDARD SILT FENCE OUTLET SEDIMENT BASIN W/ RISER AND BARREL STANDARD SKIMMER DETAIL Lu
.... . .. . .. . .. . . . . . . . A
® A B C D E F G s
Z- 1
SB#
TOP OF RISER INV. IN INV. OUT
1 292.0 29&0 287.4 287.0 294.5 293.0 80 LF
2 296.0 294.0 291.8 291.3 298.5 297.0 75 LF
3 3050 3030 3006 299.0 307.5 306.0 80 LF
zA .... . . . . . . SURFACE DEPTH VOLUME w a A
SUPPORT ROPE SUPPORT POST, D WEIR RISER BARREL ANCHOR ANCHOR SKIMMER ORIFICE.. . . .. . . . 24" INTO BOTTOM $B AREA a
PLAN VIEW TO WIRE TO R SIDE
— # (FT.) (CF) WIDTH (IN.) SIZE SIZE DIMENSIONS SIZE (IN.) SIZE (IN.)
PREVENT SAGGING OR
'\ STAKE TO SUPPORT WIRE CROSS SECTION G III`--I I (S0. FT.) (FT.) (IN.) (C.Y.) SCALE°
\ 1 1 36,000 4 128,891 65 84 42 3 9'x9`x12" 6 4.5 ®ATE. 0 ®2$-2020
3'
MIN.
2 18,400 4 61,505 30 36 24 1 5'x5'x9" 6 3.0 T NO.:
I COIR MESH OR SIMILAR , STAPLED OR 3 14,450 4 52,495 20 30 1$ 1 5'x5'x9" 6 2.5
TRENCHED INTO BOTTOM AND SIDE
CROSS-SECTION OF A COIR PORUS BAFFLE IN A SEDIMENT BASIN. ? �y m
SECTION VIEW AT OPENING
Z Z rrr
m
STANDARD BAFFLES DETAIL
SEDIMEN r onIN m
_ l W/ RISER AND BARREL SCHEDULE
I __
8 7 6 5 4 3 2 1
I

•r . • . • . M . M . AD . • d t . ! . ® dE
8 � 7 6 3
owl
4— I - F \ ?wn� r,
all
E"'�°°
D Ilk
F�v�3
D
\\ \
all N
10 (
\\ \ \ \\ \\ \\ \ 1 [ I + Z
I � 1
in O
\ \
z Lu
\
W �y Q
Z o S IL
p CL
w
Li
\ i
C vvv II 1 J I ti j
DESIGNED: SMM C
DRAWN: SMM
APPROVED: CRP
\ \ \ f ! 1 F I \ `I\A mrnrpprry'?
dce & ag
/ A.'NtsIN r
PROJECT
SEDIM1 ENT BASIN 1 SEDIMENT BASIN 2
SCALE:
E. 1 30 \ QSCALE: 1"=30' Z
SURFACE AREA: 36,000 S.F. I 1 I ' \ / / i
7 SURFACE ELEV.: 292.0'
SPILLWAY ELEV.: 293.0' I 1 V �v v SURFACE AREA: 18,400 S.F.
I \ / SUFACE ELEV.: 296.0' v S.F. I I 1 ' I I ` • SPILLWAY ELEV.: 297.0' 0 Z
TOP OF DAM: 294.5'
\ 1 ( I TOP OF DAM: 298.5' �1
i O
Z
Z 4ftw 2
qq O
B i I O
I , 1
I I = lu B
O
f III I If f 3 I �
qW
I C
I
I I
I
I I I I I I fi
I I I 1 w
I I I I I IN+ ++I fs
w
c
Q LEGEND
1 DIVERSION SCALE
I
I i I
—SF —SF SF — SILT FENCE rn N
z
I � I o
A ` MATTING u
l I
I SILT FENCE OUTLET ce s A
\ '
+ I+ OUTLET STABLIZATION (RIP RAP ROCK APRON) DATE:- AAp �28—GOGV2�f0/�AA
, 1 � 1 � � � � VaT
m
- I z y SHEET NO.:
COIR BAFFLES
SEDIMENT BASIN 3 -� �'
SCALE: 1"=30' m
CMP RISER W/ TRASH RACK rs© <
SURFACE AREA: 12,800 S.F. / 'Q N
xs�
I _ SURFACE ELEV.: 305.0' CMP OUTLET PIPE WITH FLARED END SECTION > {
1 ' ` SPILLWAY ELEV.: 306.0'
I TOP OF DAM: 308.0'
8 7 6 5 4 3
2 }