SW6231107_Plansheet - Misc. Detail_20231115 (8)

TEMPORARY SEEDING RECOMMENDATIONS(a) adevice
drawn by L.S
TEMPORARY SEEDING RECOMMENDATIONS(c) nflow
Winter and Early Spring structure Inflow
Fall Baffles 1' Freeboad mergsncy structure .00
J/ checked JK-JR
,\ - - spillway SEEDING MIXTURE SEEDING MIXTURE CONSTRUCTION SPECIFICATIONS _ I reviewed JK-JR
SPECIES RATE(LB./ACRE) RATE(LB./ACRE)
Rye (grain) 120 Rye (grain) 120 1. Clear the entrance and exit area of all vegetation, roots, and other
Annual lespedeza (cobs in _ _ _ _ _ , •
Y' nrn�n�n^n^n•
objectionable material and properly grade it. �n�ri�n�nwrin n•Un_n'nn� Rn,n_r
Piedmont and Coastal Plain, SEEDING DATES �'{Rnr��R nnntntR�R�R�RnRnnnR�R RnR RnRn nRn T�• �^7rtnlr�nln�;`Z IRnS�,I� TIP;2 Lidate April 2023
Korean in Mountains) 50 - - n_n_n _ - Average
Mountains--Aug. 15-Dec. 15 2. Place the gravel to the specific grade and dimensions shown on the sediment Lath w Ler encOmit annual lespedeza when duraton of temporary cover is Coastal Plain and piedmont--Aug. 15-Dec. 30 plans, and smooth it. sage zQne •Area of basin water surface atpillway Y job no. 20-1035-02
not to extend beyond June. top of prine�al spillway devotion
SEEDING DATES SOIL AMENDMENTS
Follow soil tests or apply 2,004 lb./acre 3. Provide drainage to carry water to a sediment trap or other suitable PVC Vent Schedule 40
pp y ground agricultural PVC Pipe PVC End
Mountains--Above 2500 ft. Feb. 15-May 15 limestone and 1,400 lb./acre 10-10-10 fertilizer. Outlet. Pipe � �nK,�v"bow
Below 2500 ft. Feb. 1-May 1 water Surface
Piedmont--Jan. 1-May 1 water
Coastal Plain--Dec. 1-Apr. 15 APPIY 4,000 lb./acre straw. Anchor straw by tacking with asphalt, 4. Use geotextile fabrics because they improve stability of the foundation
P netting, or a mulch anchoring tool. A disk with blades set nearly in locations Subject to Seepage or high water table. Schedule 40
SOIL AMENDMENTS straight can be used as a mulch anchoring tool. PVC Pipe Orifice
VC
Follow recommendations of soil tests or apply 2,000 lb./acre MAINTENANCE Plate
round agriculture limestone and 750 Ib, ocre 10-10-10 fertilizer. H�a PVC Too PVC Tee Cap
End
g g / Repair and refertilize damaged areas immediately. Topdress with MAINTENANCE
MULCH 50 lb./acre of nitrogen in march. If it is necessary to extend Maintain the gravel pad in a condition to prevent mud or sediment from leaving VC Pipe
temporary cover beyond June 15, overseed with 50 lb./acre
Apply 4,000 lb./acre straw. Anchor straw by tacking with asphalt, Kobe (Piedmont and Costal Plain) or korean (Mountains) lespedza the construction Site. This may require periodic topdressing with 2-inch stone. L und�aein
netting, or a mulch anchoring tool. A disk with blades set nearly in late February or early March. After each rainfall, inspect any structure used to trap sediment and clean
straight can be used as a mulch anchoring tool. it out as necessary. Immediately remove all objectionable materials spilled, washed, a
MAINTENANCE or tracked onto public roadways.
Refertilize if growth is not fully adequate. Reseed, refertilize CONSTRUCTION SPECIFICATIONS Farther, spillways ton undisturbed soil to the greatest MAINTENANCE
and mulch immediately following erosion or other damage. 1. Clew, grub, and strip the area under the embankment of all vegetation and 7, nlwaYs-Install the spillway Inspect skimmer sediment basins at least weds and after each si (,
/ root mat Remove all surface son containingh amounts of k matter extent possible. The achievement of planned elevations, grade design width, sP Y grnificant i7� �i M O
high organic one-half inch or eater ralnfdl event and it immediately. Remove m �+
/ and stockpile or dispose of It property. Haul all objectionable material in the and entrance and exit channel dopes are critical to the successtnul operation sediment and restore the basin to Re original dkrherrotona when sediment
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of the spillway. The spillway should be lined with laminated plastic or
Q / designated disposal area. Place temporary sediment control measures below Impermeable geotextile fabric. The fabric must be wide accumulates to one-half the height of the first baffle. Pull the skimmer to 1- >
Q and long enough to Y-� N 5 h
�O r basin as needed. cover the bottom and fides and extend onto the top of the dam for anchoring one aids so that the sediment wndemeath ft can be excuvated. Excavate the O y�r Z
TEMPORARY SEEDING RECOMMENDATIONS(b) Qj�iG / 2. Ensure that fill material far the embankment Is free of roots woody In a trench. The edges may be secured with 8-inch st es air ins. The fabric sedlms it from the entire bmin,not just around the skMmer or the tFst COL LLl Q
GRAVEL ENTRANCE SHALL BE 50 FEET P Make suns fin�g h the bottom of the basin does not h�down a ,a
J / must be long enough to extend down the slope and exit onto stable ground. E"i 0- O
Sommer IN LENGTH AND 20 FEET IN WIDTH <Z vegetation, organic matter, and other objectionable material. Place the fit in gun" the skimmer. >~'
SEEDING MIXTURE WITH 20 FOOT RADIUS AT EXISTING / impact- The width of the fabric must be one piece, not Z C) O Cd C)
lifts not to exceed 9 ihchas, and machine it. Over 1B the embankment P joined cr soloed; otherwise /y L./
so, 6 inches to allow for settlement. water can got under the faaic. If the length of the fabric is insufficient for the R the baffles if the are dam Re-anchor the baffles if water Is +-a I M
ROADWAY / Min g spillway.multiple spanning the complete width, Y damaged i�
SPECIES RATE(LB,/ACRE) entire length of the illw0 multi a�ctiona, flowing underneath or mound them- � Li 4)36'-0" MIN 4'-0" 10'-0" / 3. Slope the basin to the specified dimensions. Prevent the skimming device may be used. The upper section(s) should overlap the lower section(s) so �} } -Y
German millet 40 from settling into the mud b excavating a shallow it under the skimmer or that water cannot flow under the fabric. Secure the upper edge and sides LLJ O
/ 9 Y 9 P If the skimmer is dogged with trash and there is water in the basin,usually �J".
In the Piedmont and Mountains, a small-stemmed Sudangrass may 6-I / providing a low support under the skimmer of store o timber- of the fabric in a trench with staples o•pins. (Adapted from A Manual for wing on the rope will make the skimmer bob up and down and dislodge
by substituted at a rate of 50 lb./acre. L Designing. Installing and Maintaining Skimmer Sediment Basins. ' February the debris and restore far. If this does not work,pull the sWnwmer over to 0 t�i O
SEEDING DATES 4. Place the barrel(typically 4-inch Schedule 40 PVC pipe)on a firm, smooth 1999. J.W. Fakcoth do Son.). i
foundation of Impervious son. Do not use pervious material such as sand, the aids of s e baNn all clogged;
the debris Also bredc the oriflos maids the in � a
i' f gravel,or crushed stone as badcf ll around the pipe. Place the fill material B Inlets- Discharge water Into the basin In a manner to prevent erosion. Use skimmer to see if tt is dogged if so remove the debris
Mountains--Ma 15-Au 15 around the pipe spillway In 4-inch la and compact it under and around temporary slope drains or diversions with outlet protection to divert sediment-g' FILTER FABRIC 2-3" WASHED STONE 6" MIN. q ,i YBfS p N the sikkrhmsr arm ar bar. PIPe�dos�«4 the aiflce can be removed and � �
Piedmont--May 1-Aug. 15 mac. the pipe to at least the sane density as the adjacent embankment. Care must laden water to the upper end of the pod area to improve basin trap efficiency the obstruction cleared with a plu nba s sndro or by flushing with water. Be W O
Coastal Plain--Apr, 15-Aug. 15 (c be taken not to raise the pipe from the firm contact with its foundation when (References Runoff Control Measures and Outlet Protection sure and reptax the orifice before repositioning the skinmer, w
GRAVEL CONSTRUCTION ENTRANCE p compacting under the pipe haunches.
rl 9. Erasion contra - Construct the structure so that the disturbed arse is
2"-3" Check the fabric lined spillway for damage and mace any requ�repairs AMENDMENTS
COURSE AGGREGATE Place a minimum depth of 2 feet of compacted backf ll over the pipe spillway minimized. Divert surface water away from bare areas. Complete the with fabric foal w that spans ply idth ro of the sp/Iwayc Check the embankment.
Follow recommendations of soil tests or apply before crossing it with construction equipment. In no case should the pipe embankment before the area Is cleared. Stabilize the emergency spillways,lb./acre and outlet for erosion damage. and Inspect the embankment far
ground agriculture limestone and 750 lb./acre 10-10-10 fertilizer. conduit be Installed by cutting a trench through the dam after the embankment embankment and all other disturbed areas above the crest to the principal piping and settlement Mace all necessary repairs immediately. Remove all
is complete. spillway immediately after construction (ReferaicAurface Stabilization trash and other debris from the skimmer and pod areas.
MULCH 5, Assemble the skimmer following the manufacturers Instructions, or as
4,000 lb./acre/acre straw. Anchor straw b tacking with asphalt TEMPORARY GRAVE designed 10. Install porous baffles are specified ih Practice Bs%a$Baffles Freezing weather can make in ion forming in o the basin. Some specid
Apply / Y 9 P precautions should be taken In the winter to preVlet skimmer from
netting or a mulch anchoring tool. A disk with blades set nearly 11. After all the sediment-producing areas have been permanently stabilized, plugging with ice.
straight can be used as a mulch anchoring tool. CONSTRUCTION ENTRANCE B. La the assembled skimmer an the bottom of the basin with the flexible
Y blend
hove the structure and fit the unstable sediment Smooth the area to
MAINTENANCE andtposition the skimmer Over the excavated Attach
pit support. Be barrel
attach Stabilization
at PIP blend with the adjoining areas and stabilize properly(Referen9rface
N.T.S. a rope to the skimmer and anchor It to the side of the basin. This will be used
Refertilize if growth is not fully adequate. Reseed, refertilize to pull the skimmer to the side for maintenance.
and mulch immediately following erosion or other damage. SKIMMER SEDIMENT BASIN - N.T.S
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PERMANENT SEEDING SPECIFICATION FERTILIZER TOPDRESSING
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1. All disturbed areas shall be dressed to typical sections and plowed to a depth of 5 inches. Fertilizer used for topdressing on all roadway areas except slopes 2:1 and steeper shall be 10-20-20 PIPE OUTLET FLAT AREA- NOTES:
The top 2 inches shall be pulverized to provide uniform seedbed. NOTE: Line should be applied written approval of the Engineer, a different analysis of fertilizer may be used provided grade and shall NO WELL-DEFINED CHANNEL 1. La is the length of the tiptop apron. o
with necessary equipment to give uniform distribution of these materials. The hand-bucket be applied at the rate of 500 pounds per acre (560kg per hectare). Upon the 1-2-2 ratio is 2. D=1.5 times the maximum stone
method is not acceptable. Lime and fertilizer should be incorporated into the soil prior to maintained and the rate of application adjusted to provide the some amount of plant food as
10-20-20 analysis. A A diameter but not less than 6". 3
RISER STRUCTURE
2. The following are rates and kinds of these materials to be applied PER ACRE: Fertilizer used fort topdressing on slopes 2:1 and steeper and waste and borrow areas shall be 16-8-8 e
oP 9 oP P 3. In swell-defined channel extend the SKIMMER(512E VAR.)-
grade and shall be applied at the rate of 500 pounds per acre (560 kg per hectare). Upon written apron up the channel banks to an < STEEL POSTS(QUANTfiY VAR.) m
KM RATES approval of the Engineer, a different analysis of fertilizer may be used provided the 2-1-1 ratio is d w $
Abruzzi Rye 50 lbs. maintained and the rate of application adjusted to provide the same amount of plant food as 16-8-8 �_ elevation of 6" above the maximum - EMBANKMENT
Pensacola Bahjogross 50 lbs. analysis, tailwater depth of to the top of the / w
Kentucky 31 Fescue 50 lbs. bank, whichever is less. PLASTIC SLOPE DRAIN PIPE / STONE ENERGY
Korean Lespedezo 15 lbs. Crimping Straw Mulch: (PRACTICE STANDARD 6.32) /f DISSIPATOR £
Centipedegrass 50 lbs. 4. A filter blanket or filter fabric should OR S
Common Bermudograss 25 lbs. Crimping will be required on these project adjacent to any section of roadway where traffic is to be GEOTEXTILE LINING
plAM be installed between the riprap and O
10-20-20 Fertilizer 500 lbs. maintained or allowed durin construction. In areas within six feet 2 meters of the eel a of o
9 ( ) 9 soil foundation.
Agricultural Limestone 4000 lbs, pavement, straw is to be crimped and the immediately tacked with asphalt tack. ---- ,__ N z
LO CONSTRUCTION SPECIFICATIONS '� ° !•� 2
3. Seeded area shall be cuftipacked to firm seedbed and to cover seed. -
Crimping of straw in lieu of asphalt tack will be allowed on this project subject to the fallowing � 1. Ensure that the subgrade for the fitter and riprap follows the required lines � L
conditions: and grades shown in the Ian. Compact an fill required in the subgrade to the TEMPORARYOR
4. Grain straw shall be applied over seeded areas as mulch. No bare ground shall be visible 9 P P Y q g
In the mulched area if proper applications is achieved. Thick clumps of straw are not density of the surrounding undisturbed material. Low areas in the subgrade on PERMANENT DITCH Rove
permissible as uniform coverage is expected. Straws shall be applied at a minimum of 4000 All areas seeded and mulched shall be crimped and/or tacked with asphalt as directed by the Engineer. undisturbed Soil may also be filled by increasing the riprap thickness. EMERGENCY SPILLWAY m
Crimping will be limited to slopes 4:1 or flatter unless the Contractor can demonstrate to the Engineer SECTION AA 2. The ri ra and ravel filter must conform to the specified grading limits a
5. The mulched area shall be tacked with liquid asphalt sufficient too hold straw in place that the steeper slopes can be negotiated without altering the typical section. FILTER BLANKET shown on the plans. P g 9 (PRACTICEISTANDARD 6.65) STONE PAD Q
where directed by Engineer. Straw mulch to be of sufficient length and quality to withstand the crimping operation and provide PLAN VIEW (below skimmer) T
WOOD sTaltE
adequate ground cover. 3. Filter cloth, when used, must meet design requirements and be properly OR METAL POST O
6, Ditch treatment shall be used in areas where steep grades could cause ditch erosion. Use PIPE OUTLET TO WELL-DEFINED protected from punching or tearing durin installation. Repair an damage b
of jute mesh, excelsior matting, or fiberglass roving is acceptable. ditch treatment should be CHANNEL P P 9 9 9 p Y 9 Y
installed before mulching operation. Crimping equipment including power source shall be subject to the approval of the Engineer providing removing the riprap and placing another piece of filter cloth over the damaged
that maximum spacing of crimper blades shall not exceed 8 inches (200 mm). area. All connecting joints should overlap so the top layer is above the t t f f f t f lid
TOP OF EMBANKMENT
7. Builder is to provide a permanent round cover sufficient to restrain erosion on such downstream layer a minimum of 1 foot. If the damage is extensive, replace
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exposed areas within 15a working days or 90 calendar days, whichever is shorter, after MAINTENANCE SCHEDULE: the entire filter loth. RISER STRUCTURE ♦ �� w>�
completion of construction or development. 11 MIN. "..':::: :._. .n'+' '•+. s
TRASH RACK t---EMERGENCY SPILLWAY
1. All erosion and sediment control practices will be checked for stability and operation A A 4. Ri ra may be laced b equipment, but take care to avoid damaging the cReeaoaao- G1=N_±IIit= N=All •,! �r
Approved Tall Fescue Cultivars: following ever storm event, but in no case less than once ever week. An airs or cleaning R p Y P Yg 9 1'MIN. Py =Ili=UA=1,W=lilt:=14=1111 is aq,1
PP 9 Y Y Y rep 9
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necessaryto maintain erosion and sediment control practices shall be completed immediately. filter. SKIMMER-� oQc !3f it 1 I EI,Alt l t 1tb=AR-1 if__`s1 Rx CS�yl
P P Y 1� i! Nip 1lIIs1lif� Alf All V+1 `a'll�ih! I'i1-�lA=,gaF :'"- �lV ---
Anthem Adventure Adventure II Ami o 2� JWA Itit }1A 1+H 'itt IfU-RU I^p�,DA lift rir Ail-ti •a
` Austin Apache Apache 11 Arid 2. All seeded areas will be refertilized, reseeded as necessary, and mulched according to the 5. The minimum thickness of the riprap should be 1.5 times the maximum a.♦. 111 Aa.__Nk__Hli 911_AI_.ilii�Ait llli �aA IIA u1: AiIr- Q .
stone diameter.
Chapel Hill Brookstone Bonanza Bonanza II The kinds of seed and fertilizer, and the rates of application of seed, fertilizer, and limestone, _nr°--« BARREL p
Crossfire II Chesapeake Chieftain Coronado shall be as stated below. During periods of overlapping dates, ___
kind of seed to be used b ��PIPE h.♦ ,»`
Debutante 6. Ri ra may be field stone or rough quarry stone. It should be hard, o
Falcon Duster Falcon shall be determined by the Engineer. All rates per acre (kilograms per hectare.) P P y g q y
Genesis Finelawn Petite Finelawn Finelawn I RLAN angular, highly weather-resistant and well graded. �� //,\ `/�'\'�'�/,r;� �� /� ��f ff/ �j� •e°•pO` ®o��
Jaguar Grande Guardian Houndog March 1 - August 31 September 1 - February 28 CLASS 8 STONE PAO f `° ®•p J '®�
Monarch Jaguar Ill Kentuck 31 Kitt Hawk 7. Construct the apron on zero grade with no eve ll at the end. Make the 4^X V X I'MIN.) 'X 1 CUT OFF ANTI-SEEP � set® fib
Y Y ( ANTIFLOTATION BLOCK SECTIONAL VIEW L STABILIZED
Pacer Montauk Mustang Olympic 50 top of the riprap at the downstream end level with the receiving area or slightly TRENCH COLLAR Ifni
9 ymP # (55kg) Tall Fescue 50# (55kg) Tall Fescue OUTLET
Rebel Phoenix Pixie Pyramid La below it, 2'DEEP
}T 5# (6kg) Centipede 5j# {6kg) Centipede
Safari Rebel Jr. Rebel 11 Renegade 25# (28kg) Bermudagross (hulled) 35# (40kg) Bernudagras (unhulled)
Tomahawk Shenandoah Tempo Titan 8. Ensure that the apron is properly aligned with the receiving stream
P 500# (560kg) Fertilizer 500# (S6Okg) Fertilizer a
Woi ack Trailblazer Tribute Ve as and preferably straight throughout its length. If a curve is needed to fit site NOTES a•
fP 9 4f)00 {4500kg) Limestone 4000# (4500kg) Limestone _.;,,+y conditions, place it in the upper section of the apron.
Wrangler _
L Slopes 2:1 and Steeper and Waste and Borrow Locations: _ - _I 1 I I�. 1.SEED AND PLACE MATTING FOR EROSION CONTROL ON INTERIOR AND EXTERIOR SIDESLOPES.
a Fertilizer shall be 10-20-20 analysis. Upon written approval of the Engineer, a different SECTION AA 9. Immediately after construction, stabilize all disturbed areas with vegetation 2.INSTALL A MINIMUM OF 3 COIR FIBER BAFFLES IN ACCORDANCE WITH PRACTICE STANDARD 6.65, n
analysis of fertilizer may be used provided the 1-2-2 ratio is maintained and the rate of March 1 - August 31 September 1 - February 28 I I I I ( I I ((- I I Practices 6.10, Temporary See n nd 6.11, Permanent See 3.INSTALL SKIMMER AND COUPLING TO RISER STRUCTURE OR DIRECTLY INTO EMBANKMENT 1 FT.FROM BOTTOM OF BASIN. _ "i LO
a 9 P Y ( p Y all 9 9 v ry
n application adjusted to provide the some amount of plant food as a 10-20-20 analysis. 4.THE ARM PIPE SHALL HAVE A MINIMUM LENGTH OF 6 FT:BETWEEN THE SKIMMER AND COUPLING. C)NOT TO SCALE
C0 75# (85kg) Tall Fescue 75i (85kg) Tall Fescue MAINTENANCE a CO f
25# (28kg) Bermudagross (hulled) 35# (40kg) Bermudogras (unhulled) FILTER B NKET
� 504# {56Okg) Fertilizer SOOT (S60kg) Fertilizer Inspect riprap outlet structures weekly and after significant (I inch or greater)
r> rainfall events to see if any erosion around or below the riprap has taken place,
N 4000# (4500kg) Limestone 4000.# (4500kg) Limestone Figure 6.61d Sediment Basin(with Riser Barrel Pipe) N T-
U RIP-RAP OUTLET PROTECTION or if stones have been dislodged. Immediately make all needed repairs to
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NTS prevent further damage. >
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12" of NCDOT 4- (u LL
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Li BAFFLE (TYP-) No. 5 or No. 57 Forebay _
Q Stone Wier ® (� X '-
j BAFFLES OV1 `,
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CONSTRUCTION SPECIFICATION Foreba Riser Elev. 2ft min. O o � U)
EARTHEN Y i- (n
3 EMBANKMENT
U I. Grade the basin so that the bottom is level front to back and side to side. Side slopes a. ..• C C
2. Install posts or saw horses across the width of the sediment trap Practice 6.62,Sediment - r 0 U
cy Po P( INLET ZONE 2'1 ••;, ..,. LO
n Fence)- 35% OF SURFACE + r
3. Steel posts should be driven to a depth of 24 inches,spaced a maximum of 4 feet apart AREA ( I I 1 I ~•+. h ca
I and installed up the side of the basin as well.The top of the fabric should be 6 inches higher '..' �b"`�-':�-'•� , _ s, ILL
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a THIS WORK SHALL CONSIST OF FURNISHING, PLACING MAINTAINING AND REMOVING A "GUTTERBUDDY' TYPE than the invert of the spillway. Tops of baffles should be 2 inches lower than the top of the 5 ;�;' p°: :;�•;rr'v.. v+ ';r ,;' i: ••.. .,••,
SEDIMENT CONTROL DEVICE AS DIRECTED BY THE ENGINEER AND AS berms. :• a "
SHOWN ON THE PLANS. FOR A TYPICAL 2'x3' CATCH BASIN, THE "GUTTERBUDDY" SHOULD BE PROVIDED WITH A 4. Install at least three rows of baffles between the inlet and outlet discharge point.Basins
w MINIMUM LENGTH OF 8'. EACH END OF THE FILTER SOCK SHOULD BE SECURELY INSTALLED INTO THE BACK OF less than 20 feet in length may use 2 baffles. ' l 1 ( I I Main Basin ''r "; ••
THE CATCH BASIN BETWEEN THE HOOD AND THE GRATE. A MINIMUM OF 6"xl2" OFF EACH END OF THE FILTER 5. When using posts,add a support wire or rope across the top of the measure to prevent FIRST CHAMBER - "', •r, } �/
SOCK SHOULD BE SECURED INTO THE CATCH BASIN IN THIS MANNER. sagging- 25% OF SURFACE � I I ! � I ( ( ( I � I � I � ( � ( I ( ( ( r• •+
< CURB INLET 6. Wrap porous material,like jute backed by coir material,over a sawhorse or the top wire. AREA
- Hammer rebar into the sawhorse legs for anchoring.The fabric should have five to ten percent IXISTiNG E SECOND CHAMBER
w openings in the weave. Attach fabric to a rope and a support structure with zip ties,wire or 25% OF SURFACE _' r4 ., �••' v,S.s +' ••. w
.° 'r r ..j. staples. ( I I I 1 ( I I I I ( ( ( I I I I I I I I �', '•b•..1.•''•�.' 'r. •,r.,'. r'
� ,5 a. •s• •+' AREA .'.•.+,"° '; �i •°•
Gl
a• "g 44;n �q, .4{S' ;' ,;�,• 7. The bottom and sides of the fabric should be anchored in a trench or pinned with 8-inch
4: ;k''' S;: erosion control matting staples. OUTLET SONE
- S5 t 15 i :! ti<5+4, •3 OUTLET, CLASS 1 15% OF SURFACE
REPAIR
;. •Sr• + ;.• ;+',t ,'.y:s,S ,+y{y 8. Do not splice the fabric,but use a continuous piece across the basin. REPAIR AREA
r.' : •i ' , 'hs:1'+ 4 + k i e S ' MAINTENANCE 5' CREST WI
,t' y ; ;t .s• h" ,S, ° + I I I
a' 1 u Inspect baffles at]east once a week and after each rainfall.Make an airs Storm Drainage
= y4 „' 'r �• +sb {' }:v q.'s'ti• immediately. any repairs
Inlet Structure Forebay
Berm
'+. ?,r s� s r:'.s y'•;♦ %,' iu4 }'A t; g ' Be sure to maintain access to the baffles.Should the fabric of a baffle collapse,tear;decompose,
(Class B Rip Rap
or become ineffective,replace it promptly.
c h'L'a4 : ,;d;' "`+t. ,•:S•;h: FILTER SOCK INLET w/ Filter Fabric) MC
'' +•..: 'r h ` PROTECTION Remove sediment deposits When it reaches half frill to provide adequate storage volume for the
'•`' f '' '-GUTTERBUDDY' next rain and to reduce pressure on the baffles. Take care to avoid damaging the baffles during Top of Ban k
cleanouL Sediment depth should never exceed half the designed storage depth.
a THE FILTER SOCK SHOULD BE INSPECTED AFTER EACH RUNOFF PRODUCING RAINFALL OR AT LEAST ONCE PER
WEEK. IF THE INSPECTION SHOWS SILT AND DEBRIS BUILD UP ON OR AROUND THE FILTER SOCK, THEN THE After the contributingdrains a area has been properly stabilized,remove all baffle materials SUPPORT ROPE TO SUPPORT POST STAKE TO -
g P Y 24' INTO BOTTOM SUPPORT CONSTRUCTION SPECIFICATIONS:
N FILTER SOCK SHALL BE CLEANED OR REMOVED AND REPLACED IF NECESSARY. and unstable sediment deposits,bring the area to grade,and stabilize it. WIRES TO AGGING PREVENT OR SpE WIRE MAINTENANCE: w
! 1. PLACE THE STRUCTURAL STONE (CLASS B) 1. INSPECT THE FOREBAY AT LEAST ONCE A WEAK
L J 111 TO THE LINES AND DIMENSIONS SHOWN ON - - AND AFTER EACH RAIN EVENT. MAKE ANY ttff�
O r t b ar OBE) PLAN ONON A FILTER FABRIC I I I I REQUIRED REPAIRS IMMEDIATELY. W 0
s i G U TTE R B U D D Y _I 1 1_ 2. CHECK THE WEIR STRUCTURE FOR DAMAGE. ANY W W
N 2. PLACE THE SEDIMENT CONTROL STONE (#5 RIP RAP DISPLACED SHALL BE REPLACED Co
€ i FILTER SOCK INLET PROTECTION OR #57) ON THE UPSTREAM OF THE DAM IMMEDIATELY. ses
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Porous baffles shall be installed inside all temporary sediment traps,rock dams,skimmer basin
U P rY P • A MIN. OF 12" THICK. CROSS-SECTION VIEW 3. REMOVE SEDIMENT DEPOSITS WHEN IT REACHES Z , 0c NTS or sediment basins to reduce the velocity and turbulence of the water flowing through the 3. THE FOREBAY SHALL BE INSTALLED AS A HALF FULL TO PROVIDE ADEQUATER STORAGE
o measure,and facilitate the settling of sediment from the water before discharge. CON? MESH OR PART OF THE OVERALL BASIN AND REMAIN VOLUME. W Ins. VA
SIMILAR, STAPLED IN PLACE DURING THE LIFE OF THE BASIN.
i OR TRENCHED INTO
v�
BOTTOM OR SIDE
SCale
N/A
01, Field Book No.
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N/A
SHEET
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FOREBAY DETAIL 1 9 OF 23
NTS
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EGDETAILS-1