pg7CONSTRUCTION ENTRANCE MAINTENANCE
Maintain the gravel pad in a condition to prevent mud or sediment from leaving the construction site.
This may require periodic top—dressing with 2—inch stone. After each rainfall, inspect any structure used
to trap sediment and clean it out as necessary. Immediately remove all objectionable materials spilled,
washed, or tracked onto public roads.
CURLEX WATTLE MAINTENANCE
Inspect excelsior wattles for demoge after each runoff event. Remove sediment accumulated behind the
wattle as needed to prevent damage to channel vegetation, allow the channel to drain through the wattle,
and prevent large flows from carrying sediment over the wattle.
ROCK PIPE INLET PROTECTION MAINTENANCE
Inspect rock pipe inlet protection at least weekly and after each significant QX" inch or greater) rainfall
event and repair
immediately. Remove sediment and restore the sediment storage area to its original dimensions when the
sediment has accumulated to one—half the design depth of the trap. Place the sediment that is removed
in the designated area and replace the contaminated part of the gravel facing.
RIP RAP OUTLET PROTECTION MAINTENANCE
Inspect riprap outlet structures after heavy rains to see if any erosion around or below the riprap has
taken place or if stones have been dislodged. Immediately make all needed repairs to prevent further
damage.
TEMPORARY CHANNEL LINER MAINTENANCE
Inspect rolled erosion control products at least weekly and after each J inch or greater rainfall event.
Good contact with the ground must be maintained and erosion must not occur beneath the RECP. Any
areas of the RECP that are damaged or not in close contact with the ground shall be repaired and
stapled. If erosion occurs due to poorly controlled drainage, the problem shall be fixed and the eroded
area protected. Monitor and repair the RECP as necessary until ground cover is established.
SILT FENCE MAINTENANCE
Inspect sediment fences at least once a week and after each rainfall event. Make any repairs immediately.
Should the fabric of a sediment fence collapse , tear, decompose or become ineffective, replace it
promptly. Remove sediment deposits as necessary to provide adequate storage volume for the next rain
and to reduce pressure on the fence. Take care to avoid undermining the fence during cleanout. Remove
all fencing materials and unstable sediment deposits and bring the area to grade and stabilize it after
the contributing drainage area has been properly stabilized.
STONE SILT FENCE OUTLET MAINTENANCE
Inspect stone silt fence outlets weekly and after each rainfall event. Make any repairs immediately. Clean
out any sediment, straw, limbs, or other debris that could clog the stone filter. Add stone to outlets as
needed to maintain design height and cross section.
TEMPORARY SEEDING MAINTENANCE
Reseed and mulch areas where seedling emergence is poor, or where erosion occurs, as soon as
possible. Do not mow. Protect from traffic as much as possible.
PERMANENT SEEDING MAINTENANCE
Generally, a second stand of vegetation cannot be determined to be fully established until soil cover has
been maintained for one full year from planting. Inspect seeded areas for failure and make necessary
repairs and reseedings within the some season, if possible.
Reseeding— If a stand has inadequate cover, re—evaluate the stand after seedbed preparation or
over—seed the stand. Consider seeding temporary, annual species if the time of the year is not
appropriate for permanent seeding.
If vegetation fails to grow, soil must be tested to determine if acidity or nutrient imbalance is responsible.
Fertilization— On the typical disturbed site, full establishment usually requires refertilization in the second
growing season. Fine turf requires annual maintenance fertilization. Use soil tests if possible or follow the
guidelines given for the specific seeding mixture.
PERMANENT DRAINAGE SWALE MAINTENANCE
During the establishment period, check the permanent drainage swale after each rainfall. After grass is
established , periodically check the swole; check it after every heavy rainfall event. Immediately make
repairs. It is particularly important to check the swale outlet and all road crossings for bank stability and
evidence of piping or scour holes. Remove all significant sediment accumulation to maintain the designed
carrying capacity. Keep the grass in a healthy, vigorous condition at all times, since it is the primary
erosion protection for the swole.
TEMPORARY DIVERSION DITCH MAINTENANCE
Inspect temporary diversions once a week and after every rainfall. Immediately remove sediment from the flow
area and repair the diversion ridge. Carefully check outlets and make timely repairs as needed. When the area
protected is permanently stabilized, remove the ridge and the channel to blend with the natural ground level
and appropriately stabilize it
MAINTENANCE REQUIREMENTS
05 WASHED STONE CLASS 1 RIP RAP
S• MIN. THICK x 3• HIGH (MIN)
PIPE
ills
'::Y':. : Leh l�laex. "•s•1.iv:!',L.. //
GENERAL NOTES:
1. GRAVEL AND RIP RAP FILTER BERM BASIN SHOULD BE USED
TO PROTECT EXISTING PIPE INVERTS THAT DRAIN 5 ACRES OR LESS.
2. DIMENSIONS SHOWN ARE 114E MINIMUM ACCEPTED UNLESS
OTHERWISE NOTED.
3. CLEANOUT PRIOR TO SEDIMENT REACHING HALF CP BERM
HEIGHT.
/5 WASHED STONE
2 CUSS I RIP RAP
�u5f1 F .'/� FINISHED GRADE
1.5'
MIN.
CLEANOUT ELEVATION (SEE NOTE 3) SECTION
ROCK PIPE INLET PROTECTION
NOT TO SCALE
Table 6.10a
Temporary Seeding
Recommendations for Late
Winter and Early Spring
Table 6.1 Ob
Temporary Seeding
Recommendations for
Summer
Seeding mixture
Species Rate (Iblacre)
Rye (grain) 120
Annual lespedeza (Kobe in
Piedmont and Coastal Plain,
Korean in Mountains) 50
Omit annual lespedeza when duration of temporary cover is not to
extend beyond June.
Seeding dates
Mountains—Above 2500 feet Feb. 15 - May 15
Below 2500 feet: Feb. 1- May 1
Piedmont—Jan. 1 - May 1
Coastal Plain—Dec. 1 -Apr. 15
Soil amendments
Follow recommendations of soil tests or apply 2,000 Iblacre ground
agricultural limestone and 750 Iblacre 10-10-10 fertilizer.
Mulch
Apply4,000Iblacrestraw. Anchorstraw by tacking with asphalt, netting,
or a mulch anchoring tool. Adisk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Refertilize if growth is not fully adequate. Reseed, refertilize and mulch
immediately following erosion or other damage.
Seeding mixture
Species
German millet
Rate (Ib/acre)
40
In the Piedmont and Mountains, a small -stemmed Sudangrass may be
substituted at a rate of 50 lb/acre.
Seeding dates
Mountains—May 15 -Aug. 15
Piedmont—May 1 - Aug. 15
Coastal Plain—Apr. 15 -Aug. 15
Soil amendments
Follow recommendations of soil tests or apply 2,000 Iblacre ground
agricultural limestone and 750 Iblacre 10-10-10 fertilizer.
Mulch
Apply 4,000 Iblacre straw. Anchor straw by tacking with asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Refertilize if growth is not fully adequate. Reseed, refertilize and mulch
immediately following erosion or other damage.
Table 6.10c
Temporary Seeding
Recommendations for Fall
Seeding mixture
Species Rate (Iblacre)
Rye (grain) 121-11
Seeding dates
Mountains—Aug. 15 - Dec. 15
Coastal Plain and Piedmont—Aug. 15 - Dec. 30
Soil amendments
Follow soil tests or apply 2,000 Iblacre ground agricultural limestone
and 1,000 Iblacre 10-10-10 fertilizer -
Mulch
Apply 4,000 [b/acre straw. Anchor straw by tacking with asphalt, netting.
or a mulch anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Repair and refertilize damaged areas immediately. Topdress with 50
Iblacre of nitrogen in March. If it is necessary to extent temporary
cover beyond June 15, overseed with 50 Iblacre Kobe (Piedmont and
Coastal Plain) or Korean (Mountains) lespedeza in late February or
early March.
Permanent Seeding Recommendations
By Planting Dates
PlarltiagTXV!e
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rsN.dhed }wAplph% olia turf;, haetl„�4�it'tg, N j1lt�wing t3S a depth. 6f i " Thal p>t6dueeA a le'� w' felable su�ai�
Ret'Gwwie all :stonem boulders, Stumps, or debris from the surfaoe which would ulld rToli.l*i'. vernimation or phnt ww th
11W L'Pt"A sale roll$ tho W 81.1111000 ]1%, of to -10-10 f�.A l r phis SM lI3S. &f 20� upv: liii„t}IL ti, I : , AIId t0lIs LT!
dt1I0MLt!lLC llmre per acre unite soil tests uncut ate that a low et ratte of lime can be us -A.
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t3 gallom per ante or er uhufied asphalt at:400 gailomq per acre.
GENERAL NOTES:
1. RIP RAP SIZE: CLASS B RIP RAP
2. CHECK DAMS MAY BE USED IN SLOPING DITCHES
OR CHANNELS TO SLOW VELOCITY OR TO CREATE
SEDIMENT TRAPS.
3. ENSURE THAT MAXIMUM SPACING BETWEEN DAMS PLACES THE
TOE OF THE UPSTREAM DAM AT THE SAME ELEVATION AS THE
DOWNSTREAM DAM (SEE DIAGRAM BELOW).
CUSS B RIP
.i[i�ei.i��•
1§' MIN.' 12. OF / 5 WASHED STONE
CROSS SECTION
Ili
TEMPORARY ROCK CHECK DAM
i
NOT TO SCALE
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