SW5240301_Plansheet - Notes_20240614

PART III PART III PART III
TEMPORARY SEEDING SELF-INSPECTION, RECORDKEEPING AND REPORTING SELF-INSPECTION, RECORDKEEPING AND REPORTING SELF-INSPECTION, RECORDKEEPING AND REPORTING
SEE SEEDING CHARTS BELOW.
PROVIDE TEMPORARY SEEDING TO ALL DENUDED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE WITHIN SECTION A: SELF-INSPECTION SECTION 13: RECORDKEEPING SECTION C: REPORTING
THE TIMEFRAME SPECIFIED IN THE TABLE BELOW. Self-inspections are required during normal business hours in accordance with the table 1. E&SC Plan Documentation 1. Occurrences that Must be Reported
The approved COMPLETE GRADING BEFORE PREPARING SEEDBEDS. IF SOILS BECOME COMPACTED DURING GRADING, LOOSEN below, When adverse weather or site conditions would cause the safety of the inspection pp oved E&SC plan as well as any approved deviation shall be kept on the site. The Permittees shall report the following occurrences; �
THEM TO A DEPTH OF 6-8 INCHES. personnel to be in jeopardy, the inspection may be delayed until the next business day on approved E$tSC plan must be kept up-to-date throughout the coverage under this permit. 'n
which it is safe to perform the inspection. In addition, when a storm event of equal to or (a) Visible sediment deposition in a stream or wetland.
SEEDBED PREPARATION; The following items pertaining to the E&SC plan shall be kept on site and available for "
greater than 1.0 inch occurs outside of normal business hours, the self-inspection shall be
inspection at all times during normal business hours.
LIME: APPLY LIME ACCORDING TO SOIL TEST RECOMMENDATIONS. IF THE SOIL PH IS NOT KNOWN, performed upon the commencement of the next business day. Any time when inspections (b) Oil spills if: IZ4
APPLY AT A RATE OF 1 TO 1 Y2 TONS PER ACRE ON COARSE-TEXTURED SOILS AND 2-3 TONS PER were delayed shall be noted in the Inspection Record. Item to Document Documentation Requirements They are 25 aliens or more,
�9
ACRE OF FINE-TEXTURED SOILS. APPLY LIME UNIFORMLY AND INCORPORATE INTO THE TOP 4-6 e Y
INCHES OF SOIL. SOILS WITH PH HIGHER THAN 6 DO NOT NEED LIME. 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,
Inspect (during normal Inspection records must include: and does not significantly deviate from the of the approved E&SC plan or complete, date l�
FERTILIZER: FERTILIZE ACCORDING TO SOIL TEST RECOMMENDATIONS. WHERE SOIL TESTS ARE NOT �+
business hours) a They Cause Sheen on Surface waters (regardless Of volume), Or N
AVAILABLE, APPLY A 10-10-10 GRADE FERTILIZER AT 700-1,000 LB/ACRE. INCORPORATE FERTILIZER loco#ions, dimensions and relative elevations and sign an inspection report that fists each �
(1)Rain gauge Daily Daily rainfall amounts.
INTO THE TOP 4-6 INCHES OF SOIL. IF A HYDRAULIC SEEDER IS USED, DO NOT MIX SEED AND shown on the approved E&SC plan. E&SC measure shown on the approved E&SC Y They are within 100 feet of surface waters (regardless of volume).
FERTILIZER MORE THAN 30 MINUTES BEFORE APPLICATION. maintained in if no daily rain gauge observations are made during weekend or
good working holiday periods, and no individual-day rainfall information is plan, This documentation is required upon the
SURFACE ROUGHENING: IF AREAS TO BE SEEDED BECOME HARDENED, SEALED, OR CRUSTED, LOOSEN order available, record the cumulative rain measurement for those un- initial installation of the E&SC measures or if
IT JUST PRIOR TO SEEDING BY DISKING, RAKING, HARROWING OR OTHER SUITABLE METHODS. GROOVE attended days (and 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
OR FURROW SLOPES STEEPER THAN 3.1 ON THE CONTOUR BEFORE SEEDING. needed). Days on which no rainfall occurred shall be retarded as installation. 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 Ref: 40 CFR 302.4 or G.S. 143-215.85, P4
approved by the Division.
PLANT SELECTION: (b) A phase of grading has been completed. Initial and date a copy of the approved E&SC ( )
SELECT THE APPROPRIATE SPECIES BASED ON THE PLANTING SEASON. SEE TABLE 6.10E 6.10C. (2) E&SC At least once per 1. Identification of the measures inspected, plan or complete, date and sign an inspection
Measures 7 calendar days 2. Date and time of the inspection, report to indicate completion of the (d) Anticipated bypasses and unanticipated bypasses.
SEEDING: and within 24 3. Name of the person performing the inspection, construction phase.
hours of a rain 4. Indication of whether the measures were operating
APPLY SEED WITH A BROADCAST SEEDER, DRILL, CULTIPACKER SEEDER, OR HYDROSEEDER. USE event>1.0 inch in properly, (c) ground cover is located and installed Initial and date a copy of the approved E&SC �
SEEDING RATES GIVEN IN TABLES. BROADCAST SEEDING AND HYDROSEEDING 15 ACCEPTABLE ON STEEP 24 hours S. Description of maintenance needs 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 iq
SLOPES WHERE EQUIPMENT CANNOT BE DRIVEN. HAND BROADCASTING IS NOT RECOMMENDED. 6. Description,evidence,and date of corrective actions taken. plan_ report to indicate compliance with approved environment.
SMALL GRAINS SHOULD BE PLANTED NO MORE THAN ONE INCH DEEP AND GRASSES AND LEGUMES ON (3)Stormwater At least once per 1. identification of the discharge outfalls inspected, ground cover specifications.
MORE THAN Y2 INCH. BROADCAST SEED MUST BE COVERED BY RAKING OR CHAIN DRAGGING, AND THEN discharge 7 calendar days 2. Date and time of the inspection,
LIGHTLY FIRMED WITH A ROLLER OR CULTIPACKER. HYDROSEEDED MIXTURES SHOULD NOT INCLUDE A outfalIs(SDOs) 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 o
WOOD FIBER MULCH. hours of a rain 4. Evidence of indicators of stormwater pollution such as oil requirements for all E&SC measures
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
IF DISC BLADE/CRIMPING IS TO BE USED, APPLY tfz OF THE MULCH, THEN CRIMP, AND INSTALL THE 24 hours S. Indication of visible sediment leaving the site the appropriate Division regional office within the timeframes and in accordance with the
OTHER HALF. 6. Description,evidence,and date of corrective actions taken. (e) Corrective actions have been taken Initial and date a copy of the approved E&5C
other requirements listed below. Occurrences outside normal business hours may also be �- ^
MULCHING: (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 `♦ J
reported to the Department's Environmental Emergency Center personnel at (800)
site 7 calendar days of the fallowing shall be made: report to indicate the completion of the
MULCHING IS REQUIRED UNDER THE FOLLOWING CONDITIONS: and within 24 1. Actions taken to clean up or stabilize the sediment that has left corrective action. 85$-1336$.
• SEEDING IN FALL (WOOD FIBER MULCHES NOT ACCEPTABLE) hours of a rain the site limits,
• SLOPES STEEPER THAN 3:1 event>1.0 inch in 2. Description,evidence,and date of corrective actions taken,and 2•Additional Documentation to be Kept on Site
• EXCESSIVELY HOT OR DRY WEATHER 24 hours 3. An explanation as tothe actions taken to control future In addition to the E&SC plan documents above, the following items shall be kept on the Occurrence Reporting Timetrames(After Discovery) and Other Requirements
• ADVERSE SOILS (SHALLOW, ROCKY, OR HIGH IN CLAY OR SAND) releases. (a)Visible sediment • Within 24 hours,an oral or electronic notification. o
• AREAS RECEIVING CONCENTRATED FLOW. site and available for inspectors at all times during normal business hours, unless the
(5)Streams or At least ante per If the stream or wetland has increased visible sedimentation or a deposition in a • Within 7 calendar days,a report that contains a description of the �
wetlandsansite 7calendarda s stream has visible from the construction Division provides a site-specific exemption based on unique site conditions that make
USE A TACK RATE OF 0.10 GALLONS PER SQUARE YARD (10 GALLONS / 1,000 SF) FOR TACKING STRAW y y this requirement not practical: stream or wetland sediment and actions taken to address the cause of the deposition.
e: W
or offsite and within 24 activity,then a record of the following shall be mad a
MULCH. Division staff may waive the requirement fora written report on a
(where hours of a rain 1. Description,evidence and date of corrective actions taken,and case-by--case basis.
FOR CONCENTRATED FLOW AREAS DITCHES, CHANNELS, SWALES, ETC. ANCHOR MULCH WITH NETTING. 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 strearrt is named on the NC 303(d) list as unpaired for sediment-
24 hours Regional Office per Part III,Section C, Item(2)(a)of this permit.
MAINTENANCE: (6)Ground After each phase 1. The phase of grading(installation of perimeter E&SC related causes,the permittee may be required to perform additional
stabilization of radio measures,clearing and grubbing,installation of storm (b) Records of inspections made during the previous twelve months. The permittee shall monitoring, inspections or apply more stringent practices if staff
CONTRACTOR TO MONITOR GRASS ESTABLISHMENT. PROMPTLY RESEEED AREAS WHERE A HEALTHY, grading g g g g` p pp y g R
DENSE GROWTH DOES NOT ESTABLISH. CONTRACTOR MAY NEED TO PROVIDE NETTING OR TEMPORARY 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 DATE
activity,construction or redevelopment,permanent Division or a similar inspection form that includes all the required elements. Use of with the federal or state impaired-waters conditions. 1211123
LINERS TO AREAS WHERE GRASS CANNOT BE ESTABLISHED DUE TO EROSION. p q p
ground cover). electronically-available records in lieu of the required paper copies will be allowed if (b) Oil spills and Within 24 hours,an oral or electronic notification. The notification
2. Documentation that the required ground stabilization SCALE
measures have been provided within the r shown t0 provide equal access and utility as the hard-co records, release of shall include information about the date,time, nature, volume and
p required P q Y hard-copy NTS
PERMANENT SEEDING timeframe or an assurance that they will be provided as hazardous location of the spill or release_
soon as possible. 3. Documentation to be Retained for Three Years substances per Item DRAWN BY
SEE SEEDING CHARTS ON THIS SHEET_ All data used to complete the a-NOI and all inspection records shall be maintained for a period 1(b)-(c)above
PROVIDE PERMANENT SEEDING TO ALL DENUDED AREAS THAT WILL NOT BE COVERED BY PAVING, BUILDINGS, 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. BflE
OR OTHER LANDSCAPING WITHIN THE TIMEFRAME SPECIFIED ON THE STABILIZATION TIMEFRAME TABLE. bypasses [40 CFR The report shall include an evaluation of the anticipated quality and JOB NUMBER
COMPLETE GRADING BEFORE PREPARING SEEDBEDS. IF SOILS BECOME COMPACTED DURING GRADING, LOOSEN 122.41(m)(3)] effect of the bypass- 230576A
THEM TO A DEPTH OF 6-8 INCHES. PART 11, SECTION G, ITEM (4) (d) Unanticipated • Within 24 hours, an oral or electronic notification.
DRAW DOWN OF SEDIMENT BASINS FOR MAINTENANCE OR CLOSE OUT bypasses [40 CFR e Within 7calendar days,a report that includes an evaluation of the DRAWING FILE
SEEDBED REQUIREMENTS: 122.41(m)(3)] quality and effect of the bypass. 230576A_Erosion
THE SOIL SHOULD MEET THE FOLLOWING MINIMUM CRITERIA FOR VEGETATION ESTABLISHMENT: 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 (e) Noncompliance e Within 24 hers, an oral or electronic notification.
• ENOUGH FINE-GRAINED (SILT AND CLAY) MATERIAL TO MAINTAIN ADEQUATE MOISTURE AND LAYOUT TAB
NUTRIENT SUPPLY (AVAILABLE WATER CAPACITY OF AT LEAST 0.05 INCHES OF WATER TO 1 INCH 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). with the conditions . Within 7carrdar days,a report that contains a description of the
OF SOIL Non-surface withdrawals from sediment basins shall be allowed only when all of the following criteria have been met: of this permit that noncompliance,and its causes;the period of noncompliance, C-06
• SUFFICIENT PORE SPACE TO PERMIT ROOT PENETRATION. may endanger including exact dates and times,and if the noncompliance has not
• SUFFICIENT DEPTH OF SOIL TO PROVIDE AN ADEQUATE ROOT ZONE. THE DEPTH OF ROCK OR health or the been corrected,the anticipated time noncompliance is expected to
IMPERMEABLE LAYERS SUCH AS HARDPANS SHOULD BE 12 INCHES OR MORE, EXCEPT ON SLOPES 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 ra
STEEPER THAN 2:1 WHERE THE ADDITION OF SOIL IS NOT FEASIBLE. ( ) p Y p p p environment[40 continue;artr3 steps taken or planned to reduce,eliminate,and
• A FAVORABLE PH RANGE FOR PLANT GROWTH, USUALLY 6.0-6.5. shall not commence until the E&SC plan authority has approved these items, CFR 122.41(1)(7)] prevent reoccurrence of the noncompliance:. [40 CFR 122.41(l)(6).
• NO LARGE ROOTS, BRANCHES, STONES, LARGE CLODS OF EARTH, AND TRASH. CLODS AND (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, a Division staff"may waive the requirement for a written report on a
STONES MAY BE LEFT ON SLOPES STEEPER THAN 3:1 IF THEY ARE TO BE HYDROSEEDED. case-by-case basis.
(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
IF THE ABOVE CRITERIA CANNOT BE MET, SPECIAL SOIL CONDITIONERS OR TOPSOIL MAY BE APPLIED. properly sited, designed and maintained dewatering tanks, weir tanks, and filtration systems,
SEEDBED PREPARATION: (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,
LIME: APPLY LIME ACCORDING TO SOIL TEST RECOMMENDATIONS. IF THE SOIL PH IS NOT KNOWN, (e) Velocity dissipation devices such as check dams, sediment traps, and riprap are provided at the discharge points of all dewatering devices, and
FOLLOW RATES ON THE SEEDING SPEC TABLE. (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.
FERTILIZER: FERTILIZE ACCORDING TO SOIL TEST RECOMMENDATIONS. WHERE SOIL TESTS ARE NOT
AVAILABLE, FOLLOW RATES ON THE SEEDING SPEC TABLE. T ANDIDUEPORTING
fSURFACE ROUGHENING: IF AREAS IN , SEEDED BECOME HARDENED, SEALED, OR CRUSTED, LOOSENNCV ® 1 CET F-INSPECTION �CO � )KE r PING EI FI F1 ECTIVE: 04"/ 01/19IT JUST PR10R TQ SEEDING BY DISKING, RAKING, HARROWING OR OTHER SUITABLE METHODS. GROOVE I�.J 3� 1 1 �1 v1�✓ 1.1 11 �1 V !
OR FURROW SLOPES STEEPER THAN 3:1 ON THE CONTOUR BEFORE SEEDING.
V
PLANT SELECTION:
LU
SELECT THE APPROPRIATE SPECIES BASED ON THE PLANTING SEASON, SOIL TYPE, SLOPES, AND LAND fable 6.110111 Seeding rniktu
USES. SEE SEEDING SPEC TABLES IN PLANS FOR RECOMMENDED PERMANENT SEEDING MIXTURE. Ternporary,Seeding Species . Ratellt#ire)
Recommendations mendations for Carman millet Ora
SEEDING: Stimmer
USE CERTIFIED SEED (INSPECTED BY THE NORTH CAROLINA CROP IMPROVEMENT ASSOCIATION). In the.Piedmont-anMotm ins osrndla- trmed dangrassmaytier
sd�bbAed at a rate of 50:IbiaCM-
APPLY SEED WITH A BROADCAST SEEDER, DRILL, CULTIPACKER SEEDER, OR HYDROSEEDER ON A FIRM,
FRIABLE SEEDBED. USE SEEDING RATES GIVEN IN TABLES. Seedingdates
Mountains-May.15-Aug.IS
a Page:
WHEN USING A DRILL OR CULTIPACKER SEEDER, SMALL GRAINS SHOULD BE PLANTED NO MORE THAN Date: CONSIDERATION SHOULD BE GIVEN TO AVOIDING SERICEA
Nedmont- lays I-Aug .15
Single-lap spliced ends or begin new Q ONE INCH DEEP AND GRASSES AND LEGUMES ON MORE THAN Y2 INCH. roil in an intermittent check slot LESPEDEZA AND/OR KOBE LESPEDEZA AS IT IS/THEY ARE 0"aortal Plain-Apr 15 Aug-15
CONSIDERED AN INVASIVE SPECIES, PER NC STATEatrtthctrrtat'
WHEN BROADCAST SEEDING, SUBDIVIDE AREA INTO WORKABLE SECTIONS AND DETERMINE THE AMOUNT sve irc overcutchannel2" Longtudinal UNIVERSITY/A&T UNIVERSITY COOPERATIVE EXTENSION. THE Follow r.otamrrerm:Aonss of soil tests o a 2,,t<331 lbfacm t�3und
OF SEED NEEDED FOR EACH SECTION. APPLY ONE-HALF THE SEED WHILE MOVING BACK AND FORTH to during
allow seedbed
anchor trench EXTENSION RECOMMENDS THE FOLLOWING ALTERNATIVE NATIVE
3 ACROSS THE AREA AND APPLY THE REMAINING SEED IN THE SAME MANNER BUT AT RIGHT ANGLES TO Hunngseed6ed aricitlttaral iito;stinfs and P50`Il�te 1 Itt fefglzr f �
a preparation Prepare soil and apply seed before SPECIES: SWITCHGRASS (PANICUM VIRGATUM), SPLITBEARD e
w THE FIRST PASS. COVER SEED BY RAKING OR CHAIN DRAGGING, AND THEN LIGHTLY FIRM WITH A f4eaignDepth installing blankets,mats Orattter ^a , BLUESTEM (ANDROPOGON TERNARIUS), PARTRIDGE PEA mulch
ROLLER OR CULTIPACKER. temporary channel liner s stems (CHAMAECRISTA FASCICULATA). Apply y. I 9;
s IF DISC BLADE CRIMPING IS TO BE USED, APPLY OF THE MULCH, THEN CRIMP, AND INSTALL THE ( p y or'a m an a. a3i ts4a€i f a h ra� e
OTHER HALF. / tired as a mulch:anchorin tGOL
hAaFittgrtace
MULCH AREAS IMMEDIATELY AFTER SEEDING IN ACCORDANCE WITH RATES GIVEN IN TABLES. USE A tfertill ,.ifrtl�+�Ittisncilfdllytaa :# sr�t,mlitert
ie::arcd- traltl '
MINIMUM RATE OF 4,000 LB/ACRE. lrrirrtirti=tyfollr�iinerasictncrr.€atiserdatEsage_
NOTES.
Typical installation with erosion control blankets or turf reinforcement mats
`
y USE A TACK RATE OF 0.10 GALLONS PER SQUARE YARD (10 GALLONS / 1,000 SF) FOR TACKING STRAW r 1. Terminal anchor trenches are required at RECP ends and
intermittent check slots must be constructed across
MULCH. r �° channels at 25 foot intervals.Terminal anchor trenches Py
should be a minimum of 12 inches in depth and 6 inches
JoynerKeen
HYDROSEEDING: 12" p Table 6,11Ja Seeding mixtureI s Pia a�s�eyEng&Eng nee,�g
6,M x in width. Intermittent check slots should be 6 inches deep Temporary Seeding Species late(Iblacre)
SURFACE ROUGHENING IS REQUIRED. FINE SEEDBED PREPARATION IS NOT NECESSARY_ . and 6 inches wide. Rye yarn 120
Recommendations for Lam
> Intermittent check slot longitudinal anchor french Terming!slo and channel anchor trench 2. Design velocities exceeding 2 feettsecond require y. )
Stakes at Winter and Early Spring Ann ial.lespedeza(Kole in
RATE OF WOOD FIBER APPLICATION SHOULD BE AT LEAST 4,000-6,000 LB/ACRE, temporary blankets,mats or similar liners to protect seed Piedmont and L;oastalF'lair, Table S IBC Seeding tYilgt #'e 1051 N.Winstead Avenue-P.O.Box 753
T-6 intervals
and soil until vegetation becomes established Korean in Mountains) 50 Temporary Seeding spades ire{thlact ) Rocky Mount North Carolina 27804
APPLY LEGUME INOCULANTS AT FOUR TIMES THE RECOMMENDED RATE WHEN ADDING INOCULANT TO 3. Grass-lined channels with design velocities exceeding 6 Recommendations for Fall Rye(grain) 120 North Carolina Firm No.P-0551
HYDROSEEDER SLURRY. feettsecond should include turf reinforcement mats. V.252,977.3124
Omit annual lespedexa.when duration of temporary is not to I
N 4. Check slots to be constructed per manufacturers APPLY LIME IN DRY FROM_ specifications. extend �'be or d June t �ittg date- F:252.985.6026
Initial channet anchor trench F6°ountaim-,---Attu. 1 -Dec_15 FINAL DRASWING
q 5. Staking or stapling layout per manufacturers specification. Seeding dates coastal Plain and P.ledrnoni-Au 16-Dec,3d.
IF USING PULL BEHIND METHOD, PROVIDE 2 APPLICATIONS. THE FIRST WITH 1/3 OF THE MULCH AND �• FOR AoeNcr�REvlacw
� � 6. 11 gauge,at least 6 inch by 1 inch staples or 12 inch Mauntains�Above 2500 feet.Feb.. 15-May"15 ! �t t t 11 I t 11lI
ALL SEED AND INOCULANT AND FERTILIZER. THE SECOND APPLICATION WITH 2/3 OF THE MULCH RATE. c�a minimum length wooden stakes are recommended for
N 9 F3elo>nr 2540 feet Feb.1 eb 1-May 1 bail issendm nt \,,�� CA
Check Slots at 25'
anchoring. Piedmont ,Ian. 1 -May 1 #Ftsllt�yir.self tests Or apply Z,fltlQ:llalataie groun ;3grst:�ltural 9icndstdr&ta Q
q IF USING THE TOWER METHOD, PROVIDE 2 APPLICATIONS. THE FIRST WITH 1/3 OF THE MULCH AND „ intervals and 1,000 .�
w 7_ Do not stretch blankets/matting tight-allow the rolls to Coastal Plain-Dec. 1-Apr. 15 ;•QFS/()'• 9
ALL SEER AND INOCULANT. THE SECOND WITH 2/3 THE MULCH RATE IN OPPOSING DIRECTION OF THE
MAINTENANCE: conform to any irregularities.
FIRST PASS. Soil atnettd€nerrt Mulch S�L l
1. Inspect Rolled Erosion Control Products at least weekly and after each significant(1 inch or greater)rainfall event;repair Immediately. Follow recamm+ ridations of soil tests or apply,2,t1fl0 lblacre grourid° t�y4,(1E7ft lhtacre sit`avu_18isG1uar straw by tacttsftgr ahalt�est�ga _� ; _
IRRIGATION: 2. Good contact with the ground must be maintained,and erosion must not occur beneath the RECP. - A2 r -
w agricultural limestone and 760 lb/ate 10-10-10 fertilizer. or,a mtrlch an ring tool_ A Aisle vV"M tai ems set n6arlyr straight can I�
3_ Any areas of the RECP that are damaged or not in close contact with the ground shall be repaired and stapled. 1 used as a mulch anchoring tool �� •,.
IRRIGATE DURING DRY PERIODS OR TO SPEED DEVELOPMENT OF FULL COVER. 4. if erosion occurs due to poorly controlled drainage,the problem shall be fixed and the eroded area protected. malctr I •FN ���
5_ Monitor and repair the RECP as necessary until ground cover is established. Apply 4,000 Fblas re straw.Anchor straw by tackingwith asphaEt,netting; G
MAINTENANCE: or a mulch anchoring tool_ A disk with blades set nearly,straight cars be RepWr.and,ra€edilize.damaged arms i�dia ly. Topdress`�5D ��s-OU.����
NQRTrt cAzoi.NIA used as a'mulch.anchoring tool. tbAkcm of nilrt ert in Morch, if it is ne a. to ext6rtt r p��ary
IF STAND IS INADEQUATE, RE-EVALUATE PLANT CHOICE AND QUANTITIES OF LIME AND FERTILIZER. '" "'r°'t° r`�l `r°tFp ROLLED EROSION CONTROL PRODUCTS (RECP) FOR CHANNELS er l �t+ 3une 15 erseed wkth 60 lbiacre,Kdbe Piedmbnt are -Ttoiv�`�
NOT FOR coAtsTRu 7"I01V
REESTABLISH THE STAND AFTER SEEDBED PREPARATION OR OVER-SEED THE STAND. CONSIDER -. - Maintenance. Cr x l RPM) or F r ri ( # ar irt ) { erg in �l o February, of
SEEDING TEMPORARY, ANNUAL SPECIES IF THE TIME OF YEAR IS NOT APPROPRIATE FOR PERMANENT Refertilizeifgrowth is not fully adequate. Reseed,refertilize and mulch. aariy Mom.
SEEDING. irnrneciiat>wIy following erosion or of)tar damage j C- 06
w I i

GROUND STABILIZATION AND MATERIALS HANDLING PRACTICES FOR COMPLIANCE WITH EQUIPMENT AND VEHICLE MAINTENANCE ONSIT£ CONCRETE WASHOUT
THE NCGO1 CONSTRUCTION GENERAL PERMIT STRUCTURE WITH LINER
1. Maintain vehicles and equipment to prevent discharge of fluids.
Page: Implementing the details and specifications on this plan sheet will result in the construction 2• Provide drip pans under any stored equipment. ALM FLA PRM u� aT4�a
Gate: Steel Post o
activity being considered compliant with the Ground Stabilization and Materials Handling '�, �� � � � '�'�`°�
3. Identify leaks and repair as soon as feasible, or remove leaking equipment from the �4 ', � ,
8'Max.Standard Strength fabric with wire fence sections of the NCGO1 Construction General Permit (Sections E and F, respectively). The
project. €� ( � p L3
6'Max. Extra strength fabric without wire fence
Construction: Vlore Fence permittee shall comply with the Erosion and Sediment Control plan approved by the
1. Construct the sediment barrier of standard strength or extra strength delegated authority having jurisdiction:All details and specifications shown on this sheet 4• Collect all spent fluids, store in separate containers and properly dispose as A
synthetic filter fabrics, hazardous waste (recycle when possible). N
2. Ensure that the height of the sediment fence does not exceed 24 Plastic or may not apply depending on site conditions and the delegated authority having jurisdiction. «r�sxwuaencTroN a-r swams cl �+
5. Remove leaking vehicles and construction equipment from service until the problem rr eOMWME(WaWMIX) ,� cx r"on
" ��� ��w E4D d
inches above the ground.(Higher fences may impound volumes of Wire ties 4.,,cruAL IOPw4M tr ,m N rmu NMI40 MVCE(Iw'cz WL) 2 of ATE WASHM
water sufficient to cause failure of the structure.) has been corrected. �•'"'=I'OR OM
3_ Construct the filter fabric from a continuous roll cut to the length of the I SECTION E: GROUND STABILIZATION BE WA '"N srl�ue4ot$s s� "�"'"� '���sam f'
18-24 uulav�m aria T uaI ea b+�u///�R�;'sa 7=W,�s4eicnneEs
76%or Rf SJCE[1RR uV'/.19YY. CAPACITY TO rRwoe AUEaUA7E
barrier to avoid joints.When joints are necessary,securely fasten the 6. Bring used fuels, lubricants, coolants, hydraulic fluids and other petroleum products � � ��,°� � AlIdA4RA4z
filter cloth only at a support post with 4 feet minimum overlap to the Required Ground Stabilization TimeframesELMY Pi1.N
next post. C)
to a recycling or disposal center that handles these materials. Ts>ZTM
4. Support standard strength filter fabric by wire mesh fastened securely Stabilize within this � air �R
to the upslope side of the posts.Extend the wire mesh support to the man calendar FLOW GRADE WASHOUT T RA€Z troA OUT
G STRUCTiii�� ABOVE G STRUCTURE �
bottom of the trench.Fasten the wire reinforcement,then fabric on the $' dflWn&4" Site Area ❑escription Tlmeframe Variations
daysfter ceasin • LITTER, BUILDING MATERIAL AND LAND CLEARING WASTE
upslope side of the fence post.Wire or plastic zip ties should have a 24 forward along the g �p� L
minimum 50 pound tensile strength. trench land disturbance 1. Never bury or burn waste. Place litter and debris in approved waste containers.
01
5. When a wire mesh support fence is used,space posts a maximum of
8 feet apart.Supports should be driven securely into the ground a 1=11ter Fabric (a) Perimeter dikes, 2. Provide a sufficient number and size of waste containers (e.g dumpster, trash CONCRETE WASHOUTS
minimum of 24 inches. Wire Fence swales, ditches, and 7 None receptacle) on site to contain Construction and domestic wastes. 1. Do not discharge concrete or cement slurry from the site.
6. Extra strength filter fabric with 6 feet post spacing does not require Filter Fabric g
wire mesh support fence.Securely fasten the filter fabric directly to perimeter slopes 3. Locate waste containers at least 50 feet awe from storm drain inlets and surface
posts.Wire orptastic zip ties should have a minimum of50pound plastic or y 2. Dispose of, or recycle settled, hardened concrete residue in accordance with local
tensile strength. Wire Backfill trench (b) High Quality Water waters unless no other alternatives are reasonably available. and state solid waste regulations and at an approved facility.
7. Excavate the trench approximately 4 inches wide and 8 inches deep and Compact 7 None
along the proposed line of the posts andupslopefromthebarrier. (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
8, Place 12 inches of fabric along the bottom and side af the trench. thoroughly from upland areas and does not drain directly to a storm drain, stream or wetland. addition place the mixer and associated materials on impervious barrier and within
9. Backfill the trench with soil placed over the filter fabric and compact. Steel Post....... If slopes are 10 or less in length and are
fillIscriticaltosiltfence 3
(C) Slopes steeper than 5. Cover waste containers at the end of each workday and before storm events or lot perimeter silt fence.
Thorough compaction of the baGkfill � Q
�_._ . _ .�. �'- ' - :1 7 not steeper than 2:1, 14 days are
performance. Upslope provide secondary containment. Repair or replace damaged waste containers. 4. Install temporary concrete washouts per local requirements, where applicable. If an
10.Do not attach filter fabric to existing trees. '' allowed
rT -7 days for slopes greater than 50' in 6• Anchor all lightweight items in waste containers during times of high winds. alternate method or product is to be used, contact your approval authority for
Maintenance: Mitt:.'.
1. Inspect sediment fences at least once a week and after each inch 8"Min- 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 �{
rainfall.Make any required repairs immediately. Containers overflow. types of temporary concrete washouts provided on this detail.
2. Should the fabric of a sediment fence collapse,tear,decompose,or 24 -7 days for perimeter dikes, swales, O
5. Do not use concrete washouts for dewaterin or storing defective curb or sidewalk
become ineffective,replace it promptly. •.'.'. (d) Slopes 3:1 to 4:1 14 ditches, perimeter slopes and HQW 8. Dispose waste off-site at an approved disposal facility. g g C)
3. Remove sediment deposits as necessary to provide adequate storage -
volume for the next rain and reduce pressure on the fence.Take care Zones 9. On business days, clean up and dispose of waste in designated waste containers. sections. Starmwater accumulated within the washout may not be pumped into or 1
to avoid undermining the fence during cleanout. discharged to the storm drain system or receiving surface waters. Liquid waste must
4. Remove all fencing materials and unstable sediment deposits and -10 days for Falls Lake Watershed
bring the area to grade and stabilize it after the contributing drainage PAINT AND OTHER LIQUID WASTE be pumped out and removed from project. ! f
area has been properly stabilized. GROSS SECTION VIEW -7 days for perimeter dikes, swales, '+ f
ditches, perimeter slopes and HQW Zones 1. Do not dump paint and other liquid waste into storm drains, streams or wetlands. 5 Locate washouts at least 50 feet from storm drain inlets and surface waters unless it ,
al:aRT: cac� tNa (e) Areas with slopes can be shown that no other alternatives are reasonably available. At a minimum,
n'rr°rtlrtexrQiQu[a(fk} SILT FENCE 14 -10 days for Falls Lake Watershed unless 2. Locate paint washouts at least .50 feet away from storm drain inlets and surface
flatter than 4:1 install protection of storm drain inlet(s) closest to the washout which could receive
there is zero slope waters unless no other alternatives are reasonably available. spills or overflow.
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 >4
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.
activity. Temporary ground stabilization shall be maintained in a manner to render the construction sites. S. Install at least one sign directing concrete trucks to the washout within the project
©ate: Page- surface stable against accelerated erosion until permanent round stabilization is achieved.
g p g limits. Post signage on the washout itself to identify this location.
4'MIN. SILT FENCE PORTABLE TOILETS 9. Remove leavings from the washout when at approximately 75% capacity to limit
GROUND STABILIZATION SPECIFICATION 1, Install portable toilets on level ground, at least 50 feet away from storm drains, 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 streams or wetlands unless there is no alternative reasonably available. If SO foot components when no longer functional. When utilizing alternative or proprietary DATE
techniques in the table below: offset is not attainable, provide relocation of portable toilet behind silt fence or place products, follow manufacturer's instructions. 1211123
�'re'` ra St billz;nlatL �,'malll.,ttSt�6,lfxat,+��r on a gravel pad and surround with sand bags. mainin leavin sand dis ose of
` f�l�o .ry, ,� ._ . ... �. - At the completion of the concrete work, remove re g g p
• 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 Fill pit, if applicable, and stabilize any disturbance
in an approved disposal facility. •ll SCALD
other mulches and tackifiers other mulches and tackifiers foot traffic areas. NTS
• Hydroseeding • Geotextile fabrics such as permanent soil caused by removal of washout.
TOP OF SILT FENCE 3. Monitor portable toilets for leaking and properly dispose of any leaked material. DRAWN BY
MUST BEAT LEAST 1' • Rolled erasion control products with or reinforcement matting
ABOVE THE TOP OF without temporary grass seed * Hydroseeding Utilize a licensed sanitary waste hauler to remove leaking portable toilets and replace BDE
THE WASHED STONE • Appropriately applied straw or other mulch • Shrubs or other permanent plantings covered with properly operating unit.
• Plastic sheeting with mulch HERBICIDES, PESTICIDES AND RODENTICIDES JOB NUMBER
STEEL FENCE POST • Uniform and evenly distributed ground cover 1. Store and apply herbicides, pesticides and rodenticides in accordance with label 230576A
EARTHEN STOCKPILE MANAGEMENT
j {�►f 2 sufficient to restrain erosion restrictions.
WIRE FENCE FRONT VIEW • structural methods such as concrete,asphalt or 1. Show stockpile locations can plans. Locate earthen-material stockpile areas at least DRAWING FILE
Store herbicides, pesticides and rodenticides in their original containers with the
BURY WIRE FENCE, retaining walls 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 230576A Erosion
HARDWARE CLOTH FILTER FABRIC, g p
• Rolled erosion control products with grass seed and surface waters unless it can be shown no other alternatives are reasonably
AND HARDWARE '
IJ CLOTH IN TRENCH r,, accidental poisoning. LAYOUT TAB
FILTER OF TO 00 STEEL FENCE POST available
WASHED STONE � SET MAX2'APART 3. Do not store herbicides, pesticides and rodenticides in areas where flooding is C-07
° 0 GROUND
SOLID 2. Protect stockpile with silt fence installed along toe of slope with a minimum offset of possible or where they may spill or leak into wells, stormwater drains, ground water
oq°,pQ °° s,FILTERFABRIC POLYACRYLAMIDES (PAMS)AND FLOCCULANTS five feet from the toe of stockpile. or surface water. If a spill occurs, clean area immediately.
° "d� ON GROUND
v�° NOTES: 1. Select flocculants that are appropriate for the soils being exposed during 3. Provide stable stone access point when feasible. ra
4. Do not stockpile these materials onsite.
o p ° 1. Hardware cloth and gravel should overlay the silt fence at least 12 inches.
00,c 8Q7°o�° 2. Stone outlets should be placed on low elevation areas of silt fence and construction, selecting from the NC DWR List of Approved PAM5/Flocculants. 4. Stabilize stockpile within the timeframes provided on this sheet and in accordance
° �p�o ,o�_ Q based on conditions. 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
° C6°0060%00 o1 as vegetative, physical or chemical coverage techniques that will restrain accelerated
MAINTENANCE: 3. Apply flocculants at the concentrations specified in the NC DWR List of Approved g g q HAZARDOUS AND TOXIC WASTE
1. Per NCG01,inspect outlet at lest once a week and after each 1 inch E erosion on disturbed soils for temporary or permanent control needs.
\\\ or greater rainfall event. Complete any required repairs immediately. PAMS�FIACCUlptlts and in accordance with the manufacturer's instructions. p ry p 1. Create designated hazardous waste collection areas on-site.
BURY AND WIRE FENCE
CLOTH FILTER OF UPPER
IC IN EDGE OF Freshen stone when sediment accumulation exceeds 6 inches.Keep 4. Provide ponding area for containment of treated Stormwater before discharging 2. Place hazardous waste Containers under cover or in secondary containment.
mesh free of debris to provide adequate flow. offsite.
SECTION VIEW 2. Remove sediment when half of stone outlet is covered. 3. Do not store hazardous chemicals, drums or bagged materials directly on the ground.
s. Replace stone as needed to facilitate de-watering. 5. Store flocculants in leak-proof containers that are kept under storm-resistant cover
or surrounded by secondary containment structures.
' F NORTH ROIJA SILT FENCE OUTLET
O
NCGO1 GROUND STABILIZATION AND MATERIALS HANDLING EFFECTIVE: 04/01/19
W
Date: NOTES: Page:
1. Leave critical areas(such as flood plains, DATE: STAKES ANGLE STAKES PAGE:
steep slopes and wetlands)with desirable TO WEDGE WATTLE TOP OF BANK
trees in their natural condition or only ONTO GROUND
partially cleared.
2. Sefect trees to be preserved before siting ©ate: Page: WATTLE TrwG
ey, FENCE#AA'#1rRIAL- roads,buildings or other structures.
� ORANGE,UV F` SILT SOCK!
RESISTANT 3. Minimize trenching in areas with trees. �� / `� �- MIN.4 STAKES ON DOWNSLOPE -
HIGH TENSILE I I I I I-I I�I WATTLE
STRENGTH � Place several utilities in the same trench.
POLYETHYLENE a MIN-?STAKES DOWNSLOPE - - MATTING
4LAMINAR . Prohibit or restrict access to tree �I I 1=1 I 1=1 1=I
Q BARRICADE FABRIC
protez signs corn all sides of fencing ng and do not �l ON uPLsaPE
-`� � FLOW �: ' "�,� STAKE INSTALLATION ISOMETRIC VIEW
s store construction equipment or materials �J' �t/\ MATTING FLOW CROSS-SECTION
`a o in TPZ. 4 so,
`V
�,n O Sparing Between Socks I Wattles(Feet)
ATTACH SIGN 5. Monitor trees using a professional or train 10 Channel Srog a(°lo) 8-Inch Diameter Sock 12-inch Diameter 5adc
TO POST r
after coyour nstruction uct onff to ion aor eregulalrhfrequent uring and a Frfl��°rhro DITCH SLOPE 1 67 100
basis.
v v v 4S@ ram. 2 33 50Wdl
4C1 � �
W OW MINIMUM 6. Assign a crew member to weekly TPZ 3 22 33
tl f fence integrity checks.Repair and replace 4 17 25
GRADE TPZ fencing as needed. PLAN VIEW NOTES: 5 13 20
jl
6; �� I ., MAINTENANCE: 1. Other materials providing equivalent protection against erosive velocities may be substituted for
compost use in silt socks or wattles-
2 MI . ITWIN,I�,��� ,-��``� `�� �,I�,. '��'''���' 3-,� t. Prune any damaged trees. in spite of length such that logs do not deform. JO l"1elrKee 11
precautions,some damage to protected
JK y y
`�' 1.33 Ibs/LF STEEL POST trees may occur. In such cases, repair any � 6"Min � � � o � � MIN.2 STAKES ON UPSLOPE MIN.4 STAKES ON DOWNSLOPE 2. Fill silt sock long netting uniformly h the desiredg
MINIMUM RAD - damage to the crown,trunk, or root system
3. Use 24 inch long wooden stakes with a 2 inch x 2 inch nominal cross section.
1.26 FEErTPER LEAST damage
immediately. a Planning,Surveying&Engineering
of TREE UrAMETER - _ - _ 4. Install silt socklwattfe(s)t0 a height tin slope so flaw will riot wash around silt sacklwattle and
�I 2. Repair roots by cutting off the damaged .�. I_ [ I scour slopes, or as directed.
MATURE TREE PROTECTION ZONE RADIUS areas and painting them with tree paint. �m � III=1 I-III-- _ I=I I=I
5. install a minimum of two up-slope stakes and four down-slaps stakes at an angle to wedge silt 9051 N. Winstead Avenue-P.D.Box 75
4 Spread peat moss or moist topsoil over 2-3"Course A Aggregate Qy I=I I I�I I _-III=I - sock/Wattle to ground at bottom ditch. Use staples to secure silt socklwattle to the ground to Rocky Mount,North Carolina 27804
R TRUNK GOOD BETTER BEST exposed roots. - I I=III _ -
prevent undermining. North Carolina Firm Na.P-If557
DIAMETER PROTECTION PROTECTION PROTECTION 3. Repair damage to bark by trimming around - - MATTING V.•252-977.3124
the damaged area,taper the cut to provide - 6. The use of flocculants such as Polyacrylamide(PAM)i$recommended.Apply flocculants on top F 252.9856026
8 INCHES 10 FEET 12 FEET 20 FEET 9 t p Construction: Maintenance: V-DITCH SECTION VIEW of socktwattie and to matting on either side of sock/wattle according to manufacturer
12 INCHES 15 FEET 18 FEET 30 FEET drainage and paint with tree paint. FINAL DRAWl11ff3
4. Cut off all damaged tree limbs above the 1. Clear the entrance and exit area of all vegetation, roots, 1. Per NCG-(}1 inspect at(east once a week and after each 1 recommended rates. Reapply after each 1.0 inch rainfall. >roR a� v►�1=vr�+�Ir
16 INCHES 20 FEET 24 FEET 40 FEET and other objectionable material and properly grade it. inch Or greater rainfall', make an required repairs MIN.2 STAKES ON UPSLOPE MIN.4 STAKES ON DOWNSLOPE MAINTENANCE:
a tree collar at the trunk or main branch. Use 1 p p Y g g Y
U 20 INCHES z5 FEET 30 FEET SO FEET three separate cuts to avoid peeling bark 2.Place the gravel to the specific grade and dimensions immediately. 1. Inspect all measures weekly and after each rainfall of 1.0 inch or greater. Remove accumulated ��� � CAR��
N from healthy areas of the tree. shown on the plans,and smooth it. 2.Maintain the gravel pad in a condition to prevent mud or _ _ _ _ _ _ Sediment and an debris.
y `� .•••.....,,••.
a 3.Provide drainage to carry water to a sediment trap or sediment from leaving the construction site.This may
NORTH era€01-INA other suitable Outlet. require periodic topdressing with 2 inch stone- III III=III= I=I I I=I I I=I I I 2. Slit sock/Wattle(s)must be replaced if clogged or tom. � :2� �9•.
TREE PROTECTION - _ l ' - 3. If ponding becomes excessive, the silt sock/wattle may need to be replaced with a larger diameter S
�a « 4.Use geotextile fabrics in order to improve stability of the 3.Immediately remove all objectionable materials spilled, I- =III=1 11= - -
or a different measure.
foundation in locations subject to seepage or high water washed or tracked onto public roadways.
table. - = MATTING 4. Reinstall if damaged or dislodged.
5. Silt socksNVattles shail be inspected until land disturbance is compete and the area above the
TRAPEZOIDAL DITCH SECTION VIEW
�a �ORT�i���A{��tiry measure is permanently stabilized. �' S`SCOT- \`CONSTRUCTION ENTRANCE If EXIT %,
s ��� SILT SOCK WATTLE FOR CHECK DAM In
pate: 9/1/2023 ,,,,,,llil,i ,
In accordance with the 2013
Design Manual Updates NOTFORCONSTRUCTION
C_ n7
a
!a

DATE: PAGE: DATE: PERSPECTIVE VIEW TFREEBOARD AT ALL TIMES PAGE:
L= THE DISTANCE SUCH THAT POINTS A INFLOW BAFFLES 6"MIN INVERT ELEVATION OF EMERGENCY EMBANKMENT/
AND B ARE OF EQUAL ELEVATION "C"ENCLOSURE STRUCTURE SPILLWAY ABOVE BAFFLES
ARM ASSEMBLY
WATER DEWATERING
A B ENTRY UNIT ZONE
- - � PVC ELBOW
FILTER f /�
PVC END PVC VENT PIPE FABRIC � Lj J1
WATER SURFACE
1.5 = CAP_......__.._.. _ _ _ . _ _ _.._ _ ._ _ - --- SEDIMENT EMERGENCY
12" OF NCDOT#5 OR - SCHEDULE STORAGE ZONE SECTION VIEW SPILLWAY N
#57 WASHED STONE - - PVC CAP PVC PIPE 112" 40 PVC PIPE NOTES:
HOLES IN ORIFICE 1. Clear,grub and strip the area under the embankment of all vegetation and root mat.Remove all surface soil �v
- = PVC UNDERSIDE PVC PLATE containing high amounts of organic matter and stockpile or dispose of it properly.Haul all objectionable material
TEE TEE to the designated disposal area.Place temporary sediment control measures below basin as needed.
FLEXIBLE 2- Place the fill in lifts not to exceed 9 inches,and machine compact it.Over fill the embankment 6 inches to allow
CLASS B RIPRAP 2. NOTES: HOSE for settlement.
O 7 1. Place stone on a filter fabric foundation. 6/ ® 3. Place the barrel on a firm,smooth foundation of impervious soil.Do not use pervious material such as sand, a
2' MAX AT 2. The center stone section must be at least 9 inches below natural BOTTOM SURFACE gravel,or crushed stone as backfill around the pipe.Place the fill around the pipe spillway in 4 inch layers and L
FILTER CLOTH compact it under and around the pipe to at least the same densityas the adjacent embankment.
CENTER Extend level where the dam abuts the channel banks. END VIEW FRONT VIEW 4. Place a minimum depth of 2 feet compacted backfill over the pipe spillway before crossing with construction
a 3. Extend stone at least 1-5 feet beyond the ditch bank to keep water equipment.
O from cutting around the ends of the check dam. BAFFLES 5. Ensure that the flow length to basin width ratio is at least 2:1 to improve trapping efficiency.Length is measured
4- Set spacing between dams to assure that the elevation at the top of at the elevation of the principal spillway.
the lower dam is the same as the toe elevation of the upper dam. 6. Assemble the skimmer following manufacturers instructions or as designed and lay on the bottom of the basin
o Q Q Q p 5. Protect the channel after the lowest check dam from heavy flow that with the flexible joint at the inlet of the barrel pipe.Attach the flexible joint to the barrel pipe and position the
could cause erosion. H skimmer over the excavated pit or support.Be sure to attach a rope and anchor it to the side of the basin.This
$. Make sure the channel reach above the most upstream dam is Z will be used to pull the skimmer to the side for maintenance.
4'_6' stable. I W 7. Install the spillway in undisturbed soil to the greatest extent possible.The spillway should be lined with laminated
Y plastic or impermeable geotextile fabric.The fabric must be wide and long enough to cover the bottom and sides
7. Ensure that other areas of the Channel, SUCK as culvert entrances
and extend onto the top of the dam for anchoring in a trench.The edges may be secured with 8-inch staples or r I�
below the check dams,are not subject to damage or blockage from m pins. \vJ
displaced stones. 8- Filter fabric must be long enough to extend down the slope and exit onto stable ground.The width of the fabric
CROSS-SECTION VIEW 8. Riprap and filter fabric should be keyed in to prevent under cutting. W must be one piece,not joined or spliced,otherwise water can get under the fabric. U /�
9. Ends of check dams may need to be turned uphill to prevent bypass 1N FLOW ( 9. The upper section(s)should overlap the lower section(s)so that water cannot flow under the fabric.Secure the f
upper edge and sides of the fabric in a trench with staples or pins- C)
and better conform to site conditions. STRUCTURE ] � _ __�_ �i
1! 10. Discharge water into the basin in a manner to prevent erosion.Use temporary slope drains or diversions with �' 1
1.5'MIN. 10, DO not place Check dams in intermittent or perennial Streams. outlet protection to divert sediment-laden water to the upper end of the pool area to improve basin trap efficiency. �1_!� 3
11. Stabilize the emergency spillway embankment and all other disturbed areas above the crest of the principal
9"MIN. I spillway immediately after construction.
MAINTENANCE:
1. Inspect check dams and channels at least week) and after each rainfall of 1.0 MAINTENANCE: V
y SKIMMER 1. Inspect all measures at least weekly and after each rainfall of 1.0 inch or greater.Make necessary repairs
FILTER CLOTH inch or greater.Clean out sediment,straw,limbs or other debris that could clog immediately.
DEWATERING
the channel when needed. DEVICE 2. Remove sediment and restore the basin to its original dimensions when sediment accumulates to one-hall the
height of the first baffle.Pull the skimmer to one side so that the sediment underneath can be excavated. L 2- Anticipate submergence and deposition above the check dam and erosion from g � '1I
high flows around the edges of the dam. Correct all damage immediately.If Excavate the sediment from the entire basin,not just around the skimmer or within the first cell.
significant erosion occurs between darns,additional measures can be taken 3. Make sure any vegetation growing in the bottom of the basin does not hold down the skimmer.
such a5, installing a protective rlprap liner in that portion Of the Channel.
4. Repair baffles if they are damaged.Re-anchor the baffles if wateris flowing underneath or around them. A
5. Ensure the skimmer is not clogged with trash or debris.
3. Remove sediment accumulated behind the dams as needed to prevent damage 6. If the skimmer arm or barrel pipe is clogged,remove orifice and clear debris with a lumber's snake or b
to channel vegetation,allow the channel to drain through the stone check dam, AVERAGE WIDTH W AREA g p g9 P Y
PLANp! VIEW Et A! g 9 ( )= L flushing with clean water.Be sure to replace the orifice before repositioning the skimmer.
f11 1/ Y V and prevent large flows from carrying sediment over the dam.Add stones to the 7. Check fabric lined spillway for damage and make any required repairs with fabric that spans the full width of the
dams as needed to maintain design height and cross section. "AREA OF BASIN WATER SURFACE AT TOP PLAN VIEW EMERGENCY spillway-Check the embankment,spillways,and outlet for erosion damage,and inspect the embankment for
OF PRINCIPAL SPILLWAY ELEVATION piping and settlement. F,
SPILLWAY
Effective Date_ 9/112023 777, 7 Effective Date: 9/1/2023
CHECKDAM accordance with the 2013 �` SKIMMER SEDIMENT BASIN to accordance with the 2013
Design Manual Updates = Design Manual Updates p
DATE: DRAPE BAFFLE MATERIAL PAGE:
OVER WIRE STRAND AND EXTEND 9 GAUGE WIRE TO BASIN SIDE OR INSTALL DATE
SECURE WITH PLASTIC TIES T-POST TO ANCHOR BAFFLE TO SIDE OF BASIN AND 1211123
AT POSTS AND ON WIRE
EVERY 12" 4,MAX SECURE TO VERTICAL POST. SCALE
NTS
®RAIN N EY
VARIABLE BDE�
DEPTH
9 GAUGE MIN. HIGH J� t - JOB 11iU11+�BL14
f`-�- TENSION WIRE STRAND
STRAP _ _ SHALL BE SECURED TO 3` - �� BAFFLE 23D576A
FLOW POST TO SUPPORT MIN. MATERIAL
: :J .::: _:'. BAFFLE MATERIAL < 131�A1�Yfl�l�FILE
230576A Erosion
11 GAUGE
- - - - - - LANDSCAPING LAYOUT TAB
- - - - - - - - - - STAPLE C-08
PUMP DISCHARGE BAFFLE
HOSE 12 IN MIN. MATERIAL
STEEL POST SECURE BOTTOM OF BAFFLE TO
PLAN VIEW 3" #57 STONE NOTES: 2ROUND WITH 12"MAXIMUMSPACINGPLESAT
STRAP ° STEEL POST 7-0"DEPTH
SLOPE 1, Use matting made of 100/o coconut fiber(Coir)twine woven into high strength matrix.
FLOW : : :';'.;':'s :: =;; ;; ::':i::. 5% MAX.
=.: _ ,.:•=::_r 2. Staples should be made of 0.125 inch diameter, new steel wire formed into a U shape not less than 12
f inches in length with a throat of 1 inch in width. The staples anchor the porous baffles into the sides and SHOULD BE s
bottom Of the basin. BAFFLE MATERIALS SECURED TO THE BOTTOM
AND SIDES OF BASIN USING 12"LANDSCAPE STAPLES
ELEVATION FILTER BAG 3. Grade the basin so that the bottom is level front to back and side to side.
8 IN MIN' 4• Install the coir fiber baffles immediately upon excavation of the basins.
CONSTRUCTION AND MAINTENANCE SPECIFICATIONS p MAINTENANCE:
5. Install posts across the width of the sediment trap. 1. Inspect all measures at least weekly and after
1. TIGHTLY SEAL SLEEVE AROUND THE PUMP DISCHARGE HOSE WITH A STRAP OR SIMILAR DEVICE. 6. Steel posts should be driven to a depth of 24 inches and spaced in a maximum of 4 feet apart. The top of each rainfall of 1.0 inch Or greater and repair
2. PLACE FILTER BAG ON 3" #57 STONE BASE LOCATED ON A LEVEL OR 5% MAXIMUM SLOPING SURFACE,
the fabric should be a minimum of 6 inches higher than the invert of the spillway. Tops of the baffles should immediately. a
be a minimum of 2 Inches lower than the t0 of the earthen embankment.
DISCHARGE TO A STABILIZED AREA. EXTEND BASE A MINIMUM OF 12 INCHES FROM EDGES OF BAG, p 2. Maintain access to baffles. If the fabric
3 7. Install 3 coir fiber baffles in basins at drainage outlets with a spacing of 114 the basin length. 2 coir fiber collapses tears decomposes or becomes
3. CONTROL PUMPING RATE TO PREVENT EXCESSIVE PRESSURE WITHIN THE FILTER BAG IN ACCORDANCE baffles can be installed in the basins less than 20 feet in length with a spacing of 113 the basin length. y
n WITH THE MANUFACTURER RECOMMENDATIONS. AS THE BAG FILLS WITH SEDIMENT, REDUCE PUMPING g p g g ineffective, replace immediately. W
Ck
RATE, 8. Attach a 9-gauge high tension wire strand to the steel posts at a height of 6 inches above the spillway 3_ Remove sediment deposits when it reaches
4. REMOVE AND PROPERLY DISPOSE OF FILTER BAG UPON COMPLETION OF PUMPING OPERATIONS OR elevation with plastic ties or wire fasteners to prevent Sagging. If the temporary sediment basin will be half full. Replace if baffle fabric is damaged
AFTER BAG HAS REACHED CAPACITY, WHICHEVER OCCURS FIRST. SPREAD THE DEWATERED SEDIMENT converted to a permanent stormwater basin of a greater depth, the baffle height should be based on the during clean-out operations. Sediment depth
FROM THE BAG IN AN APPROVED UPLAND AREA AND STABILIZE WITH SEED AND MULCH BY THE END pool depth during use as a temporary sediment basin. should never exceed half the designed storage
OF THE WORK DAY. RESTORE THE SURFACE AREA BENEATH THE BAG TO ORIGINAL CONDITION UPON
REMOVAL OF THE DEVICE. depth.
5. USE NONWOVEN GEOTEXTILE WITH DOUBLE STITCHED SEAMS USING HIGH STRENGTH THREAD. SIZE
SLEEVE TO ACCOMMODATE A MAXIMUM 4 INCH DIAMETER PUMP DISCHARGE HOSE. THE BAG MUST BE Effective Date: 9/1/2023
q MANUFACTURED FROM A NONWOVEN GEOTEXTILE THAT MEETS OR EXCEEDS MINIMUM AVERAGE ROLL y POROUS BAFFLES In accordance with the 2013
VALUES (MARV) FOR THE FOLLOWING: ;-•_- - Design Manual Updates
Q
GRAB TENSILE 250 LB ASTM D••--4632
U PUNCTURE 150 LB ASTM D-4833 IU
FLOW RATE 70 GAL/MIN/FV ASTM D-4491
` PERMITTIVITY (SEC-1) 1.2 SEC-' ASTM D-4491 0
UV RESISTANCE 70% STRENGTH ® 500 HOURS ASTM D-4355
APPARENT OPENING SIZE -(AOS) D.15-0.18 MM ASTM D-4751
SEAM STRENGTH 90% ASTM D-4632
rxW (a to
S. REPLACE FILTER BAG IF BAG CLOGS OR HAS RIPS, TEARS, OR PUNCTURES. DURING OPERATION KEEP
CONNECTION BETWEEN PUMP HOSE AND FILTER BAG WATER TIGHT. REPLACE BEDDING IF IT BECOMES
G DISPLACED.
7. A FLOATING INTAKE SHOULD BE USED WITHIN THE BASIN AS CALLED OUT ON THE PLAN C-05.
8. SEDIMENT BAG TO BE CONTINUOUSLY MONITORED DURING OPERATION. J K JOynerKeenpy
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Planning Surveying&€ngOeering
DEWATERING SEDIMENT BAG
1051 N. Winstead Avenue-P.O Box 753
Rocky Moun4 North Carolina 27804
n Na14h Carolina Firm No.P-0551
V.-252.977.3124
F,•252,985 6026
FINAL ORA WING
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DATE: PAGE: DATE: PAGE:
PIPE OUTLET TO FLAT AREA NO WELL-DEFINED CHANNEL
USE OF DIVERSIONS TO PROTECT CUT OR FILL SLOPES,
PROTECT STRUCTURES OR OFF-SITE PROPERTY, OR Minimum Design Storm for Degrees of Hazard
BREAK LONG SLOPES.
Level of 1111
Area to Be Protected Minimum _ La o v v v . ..g.
„ Protection Design Storm 3d A A a
O NOTES:
Low All erosion control facilities. Open areas, 10 year -` q v _ 1. Compact any fill required in the subgrade to the density
_: . . . . . . . . , parking lots, minor recreation areas. do _-ii of the surrounding undisturbed material. Low areas in
--- a v v o -� I- d.� 1 =1 g Y y �t
Medium Recreation development, low-capacity 25 year, 24 hour _ - the sub rode on undisturbed soil may also b
DIKE -_ - increasing the riprap thickness.
roads and minor structures. 50 year, 24 hour a v v v FILTER 2. The riprap and gravel filter must conform to the specified
High Major structures, homes, main school 100 year, 24 SECTION A BLANKET grading limits shown on the plans_ N
3. Filter cloth, when used, must meet design requirements,
_ DIKE AND buildings, high-capacity roads. hour PLAN prop
r La= Length of Riprap Apron and be properly protected from punching or tearing
CHANNEL d=Thickness of Riprap Apron during installation. Repair any damage by removing the
NOTES: riprap and placing another piece over the damaged area.
CHANNEL 1. Permanent Diversions can be installed as temporary diversions until the site is If the damage is extensive, replace the entire filter cloth.
stabilized and then completed as a permanent measure, or they can be installed in 4. All connecting joints should overlap so the top layer is r „
final form duringthe initial construction operation, so long as the function properly PIPE OUTLET TO WELL--DEFINED CHANNEL above the downstream layer a minimum of 1 foot_ �J
P g Y p p Y 5_ The minimum thickness of the riprap should be 1.5 times
and meet all temporary measure Standards. the maximum stone diameter but not less than 6"_
2. Remove and properly dispose of all trees, brush, stumps, or other objectionable 6. Riprap may be field stone or rough quarry stone. It
CROSS-SECTION FOR PERMANENT DIVERSION material. Fill and compact all ditches, swales, or gullies that will be crossed to natural v o fl should be hard,angular highly weather-resistant and well
graded.
LOCATED ABOVE A SLOPE. ground level or above. La ?. Construct the apron on zero grade with no overfill at the
3. Just before placement of fill, the base of the ridge should be disked by machinery. q v end. Make the top of the riprap at the downstream end
IN. TOP 4. Excavate, shape, and stabilize the diversion to line, grade, and cross section, as level with the receiving area or slightly below it.
6" FREEBOARD AA v AA 8. Ensure that the apron is properly aligned with the
required in the design plan, receiving stream and preferably straight throughout its
sTEEF CUT oR 5. Compact the ridge to prevent unequal settlement, and to provide stability against a v v v v length_ If a curve is needed,place in the upper section of
FILL SLOPE i_f - _ - - - p g
I II - - FEE see a e. � d the apron. UP4
I-I I I-I I I 6. Stabilized the diversion with Permanent vegetation after installation.
l � l
v _ ) - MAINTENANCE:
l- I- -� f-� -I l - l -Ill-ill -
2:1 SLOPE OR 1. Inspect outlet structures at least weekly and after QD
MAINTENANCE: o `( � v N AA FILTER rainfall of 1.0 inch or greater.
FLATTER SECTION each rainfa
- 1. Inspect permanent diversions at least weekly and after each rainfall of 1.0 inch or BLANKET �I j�
greater. La=Length of Riprap Apron 2. Check outlets for erosion around or below riprap +�
g v d=Thickness of Riprap Apron and for if stones have been dislodged. Make
2. Immediately remove any obstructions from the flow area, and repair the diversion repairs immediately to prevent further damage_ cry
ridge. PLAN
3. Check outlets, and make timely repairs as needed. O
4. Maintain the vegetation in a vigorous, healthy condition at all times. W
PERMANENT DIVERSIONS Effective Date: 9/1 J2023 Effective Bate: 9/1/2023
W
x, x� In accordance with the 2013 �'
OUTLET STABILIZATION STRUCTURE
� Lc5 In accordance with the 2013
Design Manual Updates Design Manual Updates
0
DATE: PAGE: DATE: PAGE: DATE
1 1211123
TEMPORARY EARTHEN DIVERSION DIKE SCALE
NOTES: NTS
COMPACTED �_2'M1N.­� NOTES: 1. Clear the area of all debris that might hinder excavation and
SOIL ; e - - - - - - N BY
1. Remove and properly dispose of all tree, disposal of spoil. D vI E
2_ 0_0 brush, stumps, and other objectionable 2. Install the Class B or Class 1 riprap in a semi-circle around the pipe material. e s up BU
inlet. The should be built higher on each end where it ties
_ .y�, � JOLT NLdM�E`t�
18"MIN. v a into the embankment. The minimum crest width of the riprap should
2. Temporary diversions are to only be used for p p
- - - - PIPE INVERT 23Q57SA
36` PIPE MAX.
be 3 feet with a minimum bottom of 11 feet. The minimum
width
- . . - .. ... drainage areas of 5 acres or less. r. '
3. Ridges will have a 2 feet minimum top width, ��41 height should be 2 feet, but also 1 foot lower than the embankment DRAWING FILE
2:1 or flatter side ,slopes and a minimum of 0.3 of diversions
p � � 23(15T6A Err�siolt
feet freeboard. 3. A 1 foot thick layer of NC DOT#5 or#57 stone should be placed on
4. Channels will have a parabolic, trapezoidal, or the outside slope of the riprap. LAYVU
V shape with side slopes of 2:1 or flatter. 4 4. The sediment storage area should be excavated around the outside C-�9 TAB
6 TYPICAL 5. Any point where vehicles will be crossing of the stone horseshoe 18 inches below natural grade.
should have 3:1 or flatter side slopes. s' 5. When contributing drainage area has been stabilized, remove the m
6. Ensure the top of the dike is not lower at any pipe and rock, fill depression, establish final grading elevations,
point than the design elevation plus the compact the area properly, and stabilize with ground cover.
specified settlement.
TEMPORARY GRAVEL DIVERSION DIKE FOR VEHICLE CROSSING 7. Provide sufficient room around diversions to MAINTENANCE:
permit machine re-grading and cleanout, FILTER BERM NCDOT 1. Inspect all measures at least weekly and after each rainfall of 1.0
COURSE - - - - 8. Vegetate the ridge immediately after #5 OR#57 WASHED inch or greater and repair immediately.
AGGREGATE construction unless it will remain in place less STONE 2. Remove sediment and restore the sediment storage area to its
RIPRAP HEADWALL, 1 MIN.
than 30 working days. HEIGHT FROM ROAD original dimensions when the sediment has accumulated to one-half
the design depth of the trap.
18 SHOULDER MIN. F��� MAINTENANCE: i-�f �i PIPE INLET 3. Place the sediment that is removed in the designated disposal area
1. Inspect all measures at least weekly and after and replace the contaminated part of the gravel facing. p
every rainfall of 1.0 inch or greater. �. 4. Check the structure for damage. Any riprap displaced from the stone a
2. Make all repairs immediately. horseshoe must be replaced immediately.
3. Immediately remove any sediment from the I 5. After all the sediment-producing areas have been permanently
flow area and repair the diversion ridge. ' 5' W
{ I � I I � 1 I � � I ] stabilized, remove the structure and all the unstable sediment. ❑
4. Check outlets and make timely repairs as Smooth the area to blend with the adjoining areas and provide
needed. NCDOT#5 OR#57 permanent ground cover.
CLASS B RIPRAP NATURAL GROUND
9' TYPICAL WASHEDSTONE
Effective Data: 9/112023
T Effective Date: 9/1/2023
013 ROCK PIPE INLET PROTECTION fnaccordancewiththe2013
q rr£d TEMPORARY DIVERS 1 O N S In accordance wi#ft the 2013 T
w., Design Manual Updates
Design Manual Updates
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1051 N. Winstead Avenue-P.O.Box 753
Rocky Mount,North Carolina 27804
North Carolina Firm No.P-6551
0 9/:252.977.3124
F:252 985 6026
FINAL DRAWING
N FOR AGENCY REVIEW
CA qp��.,,�,
SEAL �r
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