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PREPARATION OF PLANTING SOIL� MIX LIME WITH DRY SOIL PRIOR TO MIXING OF FERTILIZER. PREVENT LIME FROM
CONTACTING ACID LOVING PLANTS.
APPLY PHOSPHORIC ACID FERTILIZER TO(OTHER THAN THAT CONSTITUTING A PORTION OF COMPLETE FERTILIZERS)
DIRECTLY TO SUBGRADE BEFORE APPLYING PLANTING SOIL AND TILLING.
PREPARATION OF SEEDING BED: LOOSEN SUBGRADE OF AREAS TO BE GRASSED TO A MINIMUM OF 4". REMOVE STONES 1
1/2" IN ANY DIMENSION AND STICKS, ROOTS, RUBBISH, AND OTHER EXTRANEOUS MATTER. LIMIT PREPARATION TO AREAS
WHICH WILL BE PLANTED PROMPTLY AFTER PREPARATION.
SEED BED IS TO CONFORM To GROUND ELEVATIONS AS SHOWN ON THE CONSTRUCTION DRAWINGS, OR AS WAS EXISTING
PRIOR TO CONSTRUCTION. LIGHT ROLLING AND NATURAL SETTLEMENT SHOULD BE TAKEN INTO ACCOUNT. THE
COMPLETED SEED BED SHOULD BLEND UNIFORMLY INTO THE SURROUNDING TOPOGRAPHY.
GOOD SURFACE DRAINAGE OF THE BED MUST BE PROVIDED. VISIBLE PONDING, WILL NOT BE ALLOWED.
APPLY SPECIFIED COMMERCIAL FERTILIZER AS THE SPECIFIED RATES, AND THOROUGHLY MIX INTO THE UPPER 2- OF THE
SEED BED. DELAY APPLICATION OF THE FERTILIZER IF LAWN PLANTING WILL NOT FOLLOW WITHIN A FEW DAYS.
IN ESTABLISHED LAWN AREAS, FINE GRADE SEED BED TO A SMOOTH, EVEN SURFACE WITH LOOSE, UNIFORMLY FINE
TEXTURE. ROLL, RAKE, AD DRAG LAWN AREAS, REMOVE RIDGES AND FILL DEPRESSIONS AS REQUIRED TO MEET FINISHED
GRADES. LIMIT FINE GRADING TO AREAS WHICH CAN BE PLANTED IMMEDIATELY AFTER GRADING.
MOISTEN PREPARED LAWN AREAS BEFORE GRASSING IF SOIL IS DRY. WATER THOROUGHLY AND ALLOW SURFACE
MOISTURE TO DRY BEFORE PLANTING. DO NOT CREATE A MUDDY SOIL CONDITION,
RESTORE SEED BEDS TO SPECIFIED CONDITIONS IF ERODED OR OTHERWISE DISTURBED AFTER FINE GRADING AND PRIOR
TO PLANTING,
TEMPORARY SEEDING
COMPLETE GRADING BEFORE PREPARING SEEDBEDS, AND INSTALL ALL NECESSARY EROSION CONTROL PRACTICES SUCH
AS, DIKES, WATERWAYS, AND BASINS. MINIMIZE STEEP SLOPES BECAUSE THEY MAKE SEEDBED PREPARATION DIFFICULT
AND INCREASE THE EROSION HAZARD. IF SOILS BECOME COMPACTED DURING GRADING, LOOSEN THEM TO A DEPTH OF 6-8
INCHES USING A RIPPER, HARROW, OR CHISEL PLOW.
SEEDBED PREPARATION
GOOD SEEDBED PREPARATION IS ESSENTIAL TO SUCCESSFUL PLANT ESTABLISHMENT. A GOOD SEEDBED is
WELL -PULVERIZED. LOOSE, AND UNIFORM, WHERE HYDROSEEDING METHODS ARE USED, THE SURFACE MAY BE LEFT WITH A
MORE IRREGULAR SURFACE OF LARGE CLODS AND STONES.
FERTILIZER --BASE APPLICATION RATES ON SOIL TESTS. WHEN THESE ARE NOT POSSIBLF, APPLY A 10-10-10 GRADE
FERTILIZER AT 700-1,000 LB/ACRE. BOTH FERTILIZER AND LIME SHOULD BE INCORPORATED INTO THE TOP 4-6 INCHES OF
SOIL. IF A HYDRAULIC SEEDER IS USED, DO NOT MIX SEED AND FERTILIZER MORE THAN 30 MINUTES BEFORE APPLICATION
SURFACE ROUGHENING --IF RECENT TILLAGE OPERATIONS HAVE RESULTED IN A LOOSE SURFACE, ADDITIONAL ROUGHENING
MAY NOT BE REQUIRED, EXCEPT TO BREAK UP LARGE CLODS. IF RAINFALL CAUSES THE SURFACE TO BECOME SEALED OR
CRUSTED, LOOSEN IT JUST PRIOR To SEEDING BY DISKING, RAKING. HARROWING, OR OTHER SUITABLE METHODS. GROOVE
OR FURROW SLOPES STEEPER THAN 3:1 ON THE CONTOUR BEFORE SEEDING.
PLANT SELECTION
SELECT AN APPROPRIATE SPECIES OR SPECIES MIXTURE FROM TABLE 6.10A FOR SEEDING IN LATE WINTER AND EARLY
SPRING, TABLE 6.106 FOR SUMMER, AND TABLE 6.10C FOR FALL.
IN THE MOUNTAINS, DECEMBER AND JANUARY SEEDINGS HAVE POOR CHANCES OF SUCCESS. WHEN IT IS NECESSARY TO
PLANT AT THESE TIMES, USE RECOMMENDATIONS FOR FALL AND A SECURELY TACKED MULCH.
SEEDING
EVENLY APPLY SEED USING A CYCLONE SEEDER (BROADCAST), DRILL, CULTIPACKER SEEDER, OR HYDROSEEDER, USE
SEEDNG RATES GIVEN IN TABLES 6.10A-6,10C. BROADCAST SEEDING AND HYDROSEEDING ARE APPROPRIATE FOR STEEP
SLOPES WHERE EQUIPMENT CANNOT BE DRIVEN. HAND BROADCASTING IS NOT RECOMMENDED BECAUSE OF THE
DIFFICULTY IN ACHIEVING A UNIFORM DISTRIBUTION.
SMALL GRAINS SHOULD BE PLANTED NO MORE THAN 1 INCH DEEP, AND GRASSES AND LEGUMES NO MORE THAN 112 INCH.
BROADCAST SEED MUST BE COVERED BY RAKING OR CHAIN DRAGGING, AND THEN LIGHTLY FIRMED WITH A ROLLER OR
CULTIPACKER. HYDROSEEDED MIXTURES SHOULD INCLUDE A WOOD FIBER (CELLULOSE) MULCH,
PERMANENT SEEDING
SELECTING PLANT MATERIALS
CLIMATE, SOILS, AND TOPOGRAPHY ARE THE MAJOR FACTORS AFFECTING THE SUITABILITY OF PLANTS FOR A PARTICULAR
SITE. ALL THREE Of THESE FACTORS VARY WIDELY ACROSS NORTH CAROLINA, WITH THE MOST SIGNIFICANT CONTRASTS
OCCURRING AMONG THE THREE MAJOR PHYSIOGRAPHIC REGIONS OF THE STATE-WOUNTAINS, PIEDMONT, AND COASTAL
PLAIN TO SIMPLIFY PLANT SELECTION, A KEY TO PERMANENT SEEDING MIXTURES IS PRESENTED IN TABLE 6.1 1B. TO FIND
SEEDING SPECIFICATIONS FOR A SPECIFIC SITE, FOLLOW THIS KEY THROUGH THE DIFFERENT STEPS --REGION, SLOPE, SOIL,
AND MAINTENANCE LEVEL --TO THE APPROPRIATE SEEDING NUMBER. SEEDING MIXTURES RECOMMENDED HERE ARE
DESIGNED FOR GENERAL USE AND ARE WELL PROVEN IN PRACTICAL FIELD SITUATIONS
SEEDBED PREPARATION
THE SOIL ON A DISTURBED SITE MUST BE AMENDED TO PROVIDE AN OPTIMUM ENVIRONMENT FOR SEED GERMINATION AND
SEEDLING GROWTH. THE SURFACE SOIL MUST BE LOOSE ENOUGH FOR WATER INFILTRATION AND ROOT PENETRATION, THE
PH (ACIDITY OR ALKALINITY) OF THE SOIL MUST BE SUCH THAT IT IS NOT TOXIC AND NUTRIENTS ARE
AVAILABLE -PREFERABLY BETWEEN 6.0 AND 6.5. SUFFICIENT NUTRIENTS -ADDED AS FERTILIZER --MUST BE PRESENT. IT IS AS
IMPORTANT TO ADD LIME AS TO ADD FERTILIZER. LIME IS USED PRIMARILY AS A PH, OR ACIDITY MODIFIER, BUT IT ALSO
SUPPLIES CALCIUM AND MAGNESIUM, WHICH ARE IMPORTANT PLANT NUTRIENTS. BY INCREASING SOIL PH, IT ALSO MAKES
OTHER NUTRIENTS MORE AVAILABLE TO PLANTS. AT THE SAME TIME, IT PREVENTS ALUMINUM TOXICITY BY DECREASING THE
SOLUBILITY OF SOIL ALUMINUM. MANY SOILS IN NORTH CAROLINA ARE HIGH IN ALUMINUM, WHICH STUNTS PLANT GROWTH.
AFTER SEED IS IN PLACE, IT MUST BE PROTECTED WITH A MULCH TO HOLD MOISTURE AND MODIFY TEMPERATURE
EXTREMES, WHILE PREVENTING EROSION DURING SEEDLING ESTABLISHMENT.
STEEP SLOPE$
THE OPERATION OF EQUIPMENT IS RESTRICTED ON SLOPES STEEPER THAN 3:1, SEVERELY LIMITING THE QUALITY OF THE
SEEDBED THAT CAN BE PREPARED. THE SOIL CANNOT BE SUFFICIENTLY WORKED, AND AMENDMENTS CANNOT BE
THOROUGHLY INCORPORATED. PROVISIONS FOR ESTABLISHMENT OF VEGETATION ON STEEP SLOPES CAN BE MADE DURING
FINAL GRADING. IN CONSTRUCTION OF FILL SLOPES, FOR EXAMPLE, THE LAST 4-6 INCHES MIGHT BE LEFT UNCOMPACTED. A
LOOSE, ROUGH SEEDBED IS ESSENTIAL.
WHERE STEEPNESS PROHIBITS THE USE OF FARM MACHINERY, SEEDING METHODS ARE LIMITED TO BROADCAST OR
HYDROSEEDING, WITH HYDROSEEDING GIVING THE MOST DEPENDABLE RESULTS. VEGETATION CHOSEN FOR THESE SLOPES
MUST NOT REQUIRE MOWING OR OTHER INTENSIVE MAINTENANCE. USING A HYDRAULIC SEEDER, SEED, FERTILIZER, WOOD
FIBER MULCH, AND A TACKING AGENT CAN BE APPLIED IN ONE OPERATION.
GOOD MULCHING PRACTICES ARE CRITICAL TO PROTECT AGAINST EROSION ON STEEP SLOPES. WHEN USING STRAW,
ANCHOR WITH NETTING OR ASPHALT. ON SLOPES STEEPER THAN 2: 1, A ROLLED EROSION CONTROL PRODUCT MAY BE
REQUIRED TO PROTECT THE SLOPE
HYDRODSEEDIN NEW LAWNS
MIX SPECIFIED SEED, FERTILIZER, AND PULVERIZED MULCH IN WATER, USING EQUIPMENT SPECIFICALLY DESIGNED FOR
HYDROSEED APPLICATION. CONTINUE MIXING UNTIL UNIFORMLY BLENDED INTO HOMOGENEOUS SLURRY, SUITABLE FOR
HYDRAULIC APPLICATION.
APPLY SLURRY UNIFORMLY TO ALL AREAS TO BE SEEDED. RATE OF APPLICATIONS IS TO BE AS REQUIRED TO OBTAIN
SPECIFIED SEED SOWING RATE.
MULCHING
AFTER FERTILIZING, SEEDING, RAKING, AND TILLING, DRIED STRAWIS TO BE UNIFORMLY SPREAD OVER THE AREA AT THE
RATE OF 90 POUNDS PER 1000 SQUARE FEET. STRAW IS TO BE SPRAYED WITH LIQUID ASPHALT TO BONG AND ANCHOR IT,
LIQUID ASPHALT (KEROSENE THINNED)"IS TO BE APPLIED AT AFIATE OF 150 GALLONS PER TON OF STRAW (APPROXIMATELY 7
GALLONS PER 1000 SQUARE FEET).
MAINTENANC
BEGIN MAINTENANCE IMMEDIATELY AFTER PLANTING,
MAINTAIN SEEDING FOR NOT LESS THAN 60 DAYS AFTER SUBSTANTIAL COMPLETION, AND LONGER AS REQUIRED TO
ESTABLISH AN ACCEPTABLE STAND. IF SEEDED IN FALL AND NOT GIVEN FULL 60 DAYS OF MAINTENANCE, OR IF NOT
CONSIDERED ACCEPTABLE AT THAT TIME, CONTINUE MAINTENANCE THE FOLLOWING SPRING UNTIL AN ACCEPTABLE STAND
IS ESTABLISHED.
MAINTAIN GRASSING BY WATERING, FERTILIZING, WEEDING, MOWING, TRIMMING, AND OTHER OPERATIONS SUCH AS
ROLLING, REGRADING AND REPLANTING AS REQUIRED TO ESTABLISH A SMOOTH, ACCEPTABLE LAWN, FREE OF ERODED
BARE AREA.
INSPECTION AND MAINTENANCE:
WHEN GRASSING IS COMPLETED, INCLUDING MAINTENANCE, THE ENGINEER WILL, UPON REQUEST, MAKE AN INSPECTION TO
DETERMINE ACCEPTABILITY.
WHEN INSPECTED GRASSING DOES NOT COMPLY WITH THE REQUIREMENTS, REPLACE REJECTED WORK AND CONTINUE
SPECIFIED MAINTENANCE UNTIL REINSPECTED BY THE ENGINEER AND FOUND ACCEPTABLE.
SEASONAL SEEDING MIXTURE AND RATES OF APPLICATION
SEASONAL SEEDING MIXTURES AND RATE OF APPLICATION SHALL BE AS FOLLOWS. ALL RATES ARE IN POUNDS PER 1000
SQUARE FEET.
SEEDING WITHIN RIGHT-OF-WAYS OF STATE ROADWAYS WILL BE ACCOMPLISHED IN ACCORDANCE WITH THE
REQUIREMENTS PERTAINING TO MAINTAINED LAWNS.
UNLESS OTHERWISE REQUIRED BY THE STATE OR THE ENGINEER (PURSUANT TO POTENTIAL EROSION OF DITCHES OR
STEEP SLOPES) SEED WITHIN ROAD RIGHT-OF-WAY WILL BE TREATED LIKE ESTABLISHED LAWNS.
SEASONAL SEEDING TABLE (TEMPORARY)
TABLE 6.10A
TEMPORARY SEEDING
RECOMMENDATIONS FOR LATE
WINTER AND EARLY SPRING
SEEDING MIXTURE
SPECIES RATE (LBIACRE)
RYE (GRAIN) 120
ANNUAL LESPEDEZA (KOBE IN PIEDMONT AND
COASTAL PLAIN, KOREAN IN MOUNTAINS) 500
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 I
PIEDMONT--JAN. I - MAY I
COASTAL PLAIN -DEC. I - APR� 15
SOIL AMENDMENTS
FOLLOW RECOMMENDATIONS OF $OIL TESTS OR APPLY 2,000 LB/ACRE GROUND AGRICULTURAL LIMESTONE
AND 750 LBIACRE 10-10-10 FERTILIZER,
MULCH
APPLY 4,000 LBIACRE STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT, NETTING, OR A MULCH
ANCHORING TOOL, A DISK WITH BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING
TOOL�
MAINTENANCE
REFERTILIZE IF GROWTH I$ NOT FULLY ADEQUATE. RESEED, REFERTILIZE AND MULCH IMMEDIATELY
FOLLOWING EROSION OR OTHER DAMAGE,
TABLE 6.10b
TEMPORARY SEEDING
RECOMMENDATIONS FOR SUMMER
SEEDING MIXTURE
SPECIES RATE (LBIACRE)
GERMAN MILLET 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
PI EDM ONT--MAY 1 -AUG. 15
COASTAL PLAIN --APR. 15 - AUG. 15
SOIL AMENDMENTS
FOLLOW RECOMMENDATIONS OF SOIL TESTS OR APPLY 2,000 LB/ACRE GROUND
AGRICULTURAL LIMESTONE AND 750 LBIACRE 10-10-10 FERTILIZER.
MULCH
APPLY 4,000 LB/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.
MINOR&
IRTAIIIII11:491T.Itz!
TABLE 6.1 OC
TEMPORARY SEEDING
RECOMMENDATIONS FOR FALL
SEEDING MIXTURE
SPECIES RATE (LBIACRE)
RYE (GRAIN) 120
SEEDING DATES
MOUNTAINS-AUG. 15 - DEC, 15
COASTAL PLAIN AND PIEDMONT--AUG. 15 - DEC� 30
4299=1
aim"Millim We NOW !I I I
MULCH
APPLY 4,000 LB/ACRE STRAW. ANCHOR STRAW BY TACKING WITH ASPHALT, NET-nNG, 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 LB/ACRE OF
NITROGEN IN MARCH. IF IT IS NECESSARY TO EXTENT TEMPORARY COVER BEYOND JUNE
15, OVERSEED WITH 50 LB/ACRE KOBE (PIEDMONT AND COASTAL PLAIN) OR KOREAN
(MOUNTAINS) LESPEDEZA IN LATE FEBRUARY OR EARLY MARCH.
STABILZE
OUTLET
DIVERSION DIKE
HOLD-DOWN STAKES
TOP OF
DIVERSION
NATURAL
GROUND
Lt.Vr-L
6 1 .103 00-10111 F.111 a 61: 44411111110
SEEDING NOTES
1. IN EASTERN PIEDMONT, ADD 25 LBIACRE PENSACOLA BAHIAGRASS OR 10 LBIACRE COMMON
BERMUDAGRASS. USE COMMON BERMUDAGRASS ONLY WHERE IT IS UNLIKELY TO BECOME A PEST.
2. AFTER AUG. 15, USE UNSCARIFIED SERICEA SEED.
3. WHERE A NEAT APPEARANCE IS DESIRED, OMIT SERICEA AND SUBSTITUTE 40 LBIACRE BAHIAGRASS OR
15 LBIACRE BERMUDAGRASS.
4. TO EXTEND SPRING SEEDING DATES INTO JUNE, ADD 15 LBIACRE HULLED BERMUDAGRASS. HOWEVER, IT
IS PREFERABLE TO SEED TEMPORARY COVER AND SEED FESCUE IN SEPT.
NURSE PLANTS
BETWEEN MAY 1 AND AUG. 15, ADD 10 LB/ACRE GERMAN MILLET OR 15 LBIACRE SUDANGRASS. PRIOR TO
MAY 1 OR AFTER AUG. 15, ADD 40 LB/ACRE RYE (GRAIN),
SEEDING DATES
BEST POSSIBLE
FALL: AUG. 25 - SEPT. 15 FEB. 15 - MAR. 21
LATE WINTER: AUG. 20 - OCT� 25 FEB� I - APR. 15
FALL IS BEST FOR TALL FESCUE, AND LESPEDEZAS IN LATE WINTER. OVERSEEDING OF KOBE LESPEDEZA
OVER FALL -SEEDED TALL FESCUE IS VERY EFFECTIVE. USE UNHULLED BERMUDAGRASS SEED IN FALL.
SOIL AMENDMENTS
APPLY LIME AND FERTILIZER ACCORDING TO SOIL TESTS OR APPLY 4,000 LBIACRE GROUND AGRICULTURAL
LIMESTONE AND 1,000 LBIACRE 10-10-10 FERTILIZER,
MULCH
APPLY 4,000-5,000 LBIACRE GRAIN STRAW OR EQUIVALENT COVER OF ANOTHER SUITABLE MULCHING
MATERIAL. ANCHOR MULCH BY TACKING WITH ASPHALT, ROVING, OR NETTING, NETTING IS THE PREFERRED
ANCHORING METHOD ON STEEP SLOPES.
MAINTENANCE
REFERTILIZE IN THE SECOND YEAR UNLESS GROWTH IS FULLY ADEQUATE. MAY BE MOWED ONCE OR TWICE
A YEAR, BUT MOWING IS NOT NECESSARY. RESEED, FERTILIZE, AND MULCH DAMAGED AREAS IMMEDIATELY.
Table 6.111
SEEDING NO. 2 FOR: GENTLE
SLOPES, AVERAGE SOIL; LOW
MAINTENANCE
SEEDING MIXTURE
SPECIESIRATE (LBIACRE)TALL FESCUE
SERICEA LESPEDEZA
KOBE LESPEDEZA80
20
10
SEEDING NOTES
1. AFTER AUG, 15, USE UNSCARIFIED SERICEA SEED.
2, WHERE PERIODIC MOWING IS PLANNED OR A NEAT APPEARANCE IS DESIRED, OMIT SERICEA AND
INCREASE KOBE LESPEDEZA TO 40 LBIACRE,
3. TO EXTEND SPRING SEEDING DATES INTO JUNE, ADD 15 LS,1ACRE HULLED BERMUDAGRASS. HOWEVER
AFTER MID -APR. IT IS PREFERABLE TO SEED TEMPORARY COVER.
NURSE PLANTS
BETWEEN MAY I AND AUG. 15, ADD 10 LBIACRE GERMAN MILLET OR 15 LB/ACRE SUDANGRASS. PRIOR TO
MAY 1 OR AFTER AUG, 15, ADD 40 LB/ACRE RYE (GRAIN).
SEEDING DATES
BEST POSSIBLE
FALL: AUG. 25 - SEPT. 15 FEB. 15 - MAR, 21
LATE WINTER: AUG. 20 - OCT. 25 FEB, I - APR, 15
FALL IS BEST FOR TALL FESCUE AND LATE WINTER FOR LESPEDEZAS. OVERSEEDING OF KOBE LESPEDEZA
OVER FALL -SEEDED TALL FESCUE IS VERY EFFECTIVE.
SOIL AMENDMENTS
APPLY LIME AND FERTILIZER ACCORDING TO SOIL TESTS OR APPLY 4.000 LB/ACRE GROUND AGRICULTURAL
LIMESTONE AND 1,000 LB/ACRE 10-10-10 FERTILIZER.
MULCH
APPLY 4,000 LB/ACRE GRAIN STRAW OR EQUIVALENT COVER OF ANOTHER SUITABLE MULCH. ANCHOR
STRAW BY TACKING WITH ASPHALT, NETTING, OR ROVING OR BY CRIMPING WITH A MULCH ANCHORING
TOOL, A DISK WITH BLADES SET NEARLY STRAIGHT CAN BE USED AS A MULCH ANCHORING TOOL.
MAINTENANCE
REFERTILIZE IN THE SECOND YEAR UNLESS GROWTH IS FULLY ADEQUATE. MAY BE MOWED ONCE OR
TWICE A YEAR, BUT MOWING IS NOT NECESSARY. RESEED, FERTILIZE, AND MULCH DAMAGED AREAS
IMMEDIATELY.
ISLAND OVER INLET
1.5
MIN,
CONSTRUCTION SPECIFICATIONS
1. PLACE SLOPE DRAINS ON UNDISTURBED SOIL OR WELL COMPACTED FILL AT LOCATIONS AND ELEVATIONS SHOWN ON
THE PLAN.
2. SLIGHTLY SLOPE THE SECTION OF PIPE UNDER THE DIKE TOWARD ITS OUTLET,
3. HAND TAMP THE SOIL UNDER AND AROUND THE ENTRANCE SECTION IN LIFTS NOT TO EXCEED 6 INCHES.
4. ENSURE THAT FILL OVER THE DRAIN AT THE TOP OF THE SLOPE HAS MINIMUM DIMENSIONS OF 1.5 FEET DEPTH, 4
FEET TOP WIDTH, AND 3:1 SIDE SLOPES.
5. ENSURE THAT ALL SLOPE DRAIN CONNECTIONS ARE WATERTIGHT.
6. ENSURE THAT ALL FILL MATERIAL IS WEILL- COMP ACTED. SECURELY FASTEN THE EXPOSED SECTION OF THE DRAIN
NTH GROMMETS OR STAKES SPACED NO MORE THAN 10 FEET APART.
7. EXTEND THE DRAIN BEYOND THE TOE OF THE SLOPE, AND ADEQUATELY PROTECT THE OUTLET FROM EROSION.
8. MAKE THE SETTLED, COMPACTED DIKE RIDGE NO LESS THAN I FEET ABOVE THE TOP OF THE PIPE AT EVERY POINT.
9. IMMEDIATELY STABILIZE ALL DISTURBED AREAS FOLLOWING CONSTRUCTION.
MAINTENANCE
INSPECT THE SLOPE DRAIN AND SUPPORTING DIVERSION AFTER EVERY RAINFALL, AND PROMPTLY MAKE NECESSARY
REPAIRS. WHEN THE PROTECTED AREA HAS BEEN PERMANENTLY STABILIZED, TEMPORARY MEASURES MAY BE
REMOVED, MATERIALS DISPOSED OF PROPERLY, AND ALL DISTURBED AREAS STABILIZED APPROPRIATELY.
TEMPORARY SLOPE DRAIN DETAIL
NOT TO SCALE
SEEDING MIXTURE
SPECIES1 RATE (LBIACRE)
BLEND OF TWO TURF -TYPE TALL
FFSCUES (90%) AND TWO OR 200-250
NCDOT #5 OR #57 WAS
MORE IMPROVED KENTUCKY HEIGHT OF 16" MIN. AB
BLUEGRASS VARIETIES (10%)
SEEDING DATES
BEST POSSIBLE
FALL: AUG. 25 - SEPT. 15 FEB. 15 - MAR. 21
---------- ------ FEB. 1 -APR. 15
FOR QUALITY TURF, AVOID SPRING SEEDING. WHERE GRADING IS COMPLETED DURING LATE
WINTER OR SPRING, AN ALTERNATIVE IS TO SEED 30 LB/ACRE KOBE LESPEDEZA, KEEP
MOWED, PREPARE SEEDBED, AND SEED A PERMANENT MIXTURE IN EARLY FALL.
SOIL AMENDMENTS
APPLY LIME AND FERTILIZER ACCORDING TO SOIL TESTS, OR APPLY 4,000 LBIACRE GROUND
AGRICULTURAL LIMESTONE AND 1,000 LB/ACRE 10-10-10 FERTILIZER.
MULCH
APPLY 4,000 LB/ACRE SMALL GRAIN STRAW OR EQUIVALENT COVER OF ANOTHER SUITABLE
MULCH. ANCHOR STRAW BY TACKING WITH ASPHALT, NETTING, ROVING, OR BY CRIMPING
WITH A MULCH ANCHORING TOOL. A DISK WITH BLADES SET NEARLY STRAIGHT CAN BE
USED AS A MULCH ANCHORING TOOL.
MAINTENANCE
FERTILIZE ACCORDING TO SOIL TESTS OR APPLY 40 LB/ACRE NITROGEN IN JAN. OR FEB,, 40
LB IN SEPT.. AND 40 LS IN NOV., FROM A 12-4-8,16-4-8, OR SIMILAR TURF FERTILIZER. AVOID
FERTILIZER APPLICATIONS DURING WARM WEATHER, AS THIS INCREASES STAND LOSSES TO
DISEASE. MOW TO A HEIGHT OF 2.5-3.5 INCHES AS NEEDED. RESEED, FERTILIZE, AND MULCH
DAMAGED AREAS IMMEDIATELY.
TABLE 6,110
SEEDING NO. 5 FOR:
GRASS -LINED CHANNELS
SEEDING MIXTURE
SPECIES1 RATE (LBIACRE)
TALLFESCUE 200 (4-5 LB/1,000 FT)
NURSE PLANTS
BETWEEN MAY 1 AND AUG, 15, ADD 15 LBIACRE SUDANGRASS OR 15 LB/ACRE GERMAN
MILLET. PRIOR TO MAY I OR AFTER AUG. 15, ADD 40 LBIACRE RYE (GRAIN).
SEEDING DATES
BEST: POSSIBLE:
AUG. 25 - OCT. FEB. -APR. 15
AVOID SEEDING FROM NOV. TO JAN. IF SEEDING MUST BE DONE AT THIS TIME, ADD 40
LB/ACRE RYE GRAIN AND USE A CHANNEL LINING THAT OFFERS MAXIMUM PROTECTION.
SOIL AMENDMENTS
APPLY LIME AND FERTILIZER ACCORDING TO SOIL TESTS, OR APPLY 4,000 LB/ACRE GROUND
AGRICULTURAL LIMESTONE AND 1,000 LEI/ACRE 10-10-10 FERTILIZER. OPERATE TILLAGE
EQUIPMENT ACROSS THE WATERWAY.
MULCH
USE A Rg-LED EROSION CONTROL PRODUCT TO COVER THE BOTTOM OF CHANNELS AND
DITCHES. AND STAPLE SECURELY, THE LINING SHOULD EXTEND ABOVE THE HIGHEST
CALCULATED DEPTH OF FLOW, ON CHANNEL SIDE SLOPES ABOVE THIS HEIGHT, AND IN
DRAINAGES NOT REQUIRING TEMPORARY LININGS, APPLY 4,000 LBiACRE GRAIN STRAW, AND
ANCHOR STRAW BY STAPLING NETTING OVER THE TOP.
MULCH AND ANCHORING MATERIALS MUST NOT BE ALLOWED TO WASH DOWN SLOPES
WHERE THEY CAN CLOG DRAINAGE DEVICES.
MAINTENANCE
INSPECT AND REPAIR MULCH FREQUENTLY. REFERTILIZE IN LATE WNTER OF THE
FOLLOWING YEAR USE SOIL TESTS OR APPLY 150 LB/ACRE 10-10-10. MOW REGULARLY TO A
HEIGHT OF 2-4 INCHES,
FILTER CLOTH
FILTER CLOTH
moa5cDpVR)
4' TO 6'
CROSS-SECTION VIEW
NOTES:
DEFINED AS A SMALL STONE DAM STRUCTURE WITH A WEIR OUTLET NTH
A SEDIMENT STORAGE AREA ON THE UPPERSIDE.
DO NOT USE A CHECK DAM WITH A WIER IN INTERMITTENT OR PERENNIAL
STREAMS
CONSTRUCTION SPECIFICATIONS
1. PLACE STRUCTURAL STONE (CLASS B) TO THE LINES AND DIMENSIONS SHOWN IN THE PLAN ON A FILTER FABRIC
FOUNDATION, THE CREST MOTH OF THE DAM SHOULD BE A MINIMUM OF 2 FEET,
2. KEEP THE CENTER STONE SEC11ON AT LEAST 9 INCHES BELOW NATURAL GROUND LEVEL WERE THE DAM ABUTS THE
CHANNEL BANKS.
3. PLACE SEDIMENT CONTROL STONE (#5 OR #57) ON' THE UPSTREAM SIDE OF THE DAM THAI IS A MINIMUM OF 1 FOOT
THICK,
4. PROVIDE AN APRON THAT IS 3 TIMES THE HEIGHT OF THE DAM. THE APRON WIDTH IS AT LEAST 4 FEET LONG.
UNDERCUT T14E APRON SO THAT THE TOP OF THE APRON IS FLUSH WITH THE SURROUNDING GRADE.
5. EXTEND THE STONE A LEAST 1.5 FEET BEYOND THE DITCH BANK TO KEEP WATER FROM CUTTING AROUND THE ENDS OF
THE CHECK DAM.
6. MAKE SURE THAT THE CHANNEL REACH ABOVE THE MOST UPSTREAM DAM IS STABLE.
7, ENSURE THAT OTHER AREAS OF THE CHANNEL, SUCH AS CULVERT ENTRANCES BELOW THE CHECK DAMS, ARE NOT SUBJECT
TO DAMAGE OR BLOCKAGE FROM DISPLACED STONES.
8. EXCAVATE SEDIMENT STORAGE AREA TO THE DIMENSIONS SHOWN ON THE PLAN.
MAINTENANCE
INSPECT CHECK DAMS AND CHANNELS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT (1/2 INCH OR GREATER) RAINFALL
EVENT AND REPAIR IMMEDIATELY. CLEAN OUT SEDIMENT, STRAW, LIMBS, OR OTHER DEBRIS THAI' COULD CLOG THE CHANNEL
MEN NEEDED.
ANTICIPATE SUBMERGENCE AND DEPOST10N ABOVE THE CHECK DAM AND EROSION FROM HIGH FLOWS AROUND THE EDGES OF
THE DAM. CORRECT ALL DAMAGE IMMEDIATELY. IF SIGNIFICANT EROSION OCCURS BETWEEN DAMS� ADDITIONAL MEASURES CAN BE
TAKEN SUCH AS, INSTALLING A PROTECTIVE RIPRAP LINER IN THAT PORTION OF THE CHANNEL�
REMOVE SEDIMENT ACCUMULATED BEHIND THE DAMS AS NEEDED TO PREVENT DAMAGE TO CHANNEL VEGETATION, ALLOW THE
CHANNEL TO DRAIN THROUGH THE STONE CHECK DAM, AND PREVENT LARGE FLOWS FROM CARRYING SED!WE'N'T OVER THE DAM,
ADD STONES TO DAMS AS NEEDED TO MAINTAIN DESIGN HEIG14T AND CROSS SECTION.
CHECK DAM WITH A WEIR DETAIL
NOT TO SCALE
A A
NCDOT #5 OR #57 WASHED STONE TO A
HEIGHT OF 16" MIN. ABOVE TOP OF BOX
19-GAUGE HARDWARE CLOTH
(Y4" MESH OPENINGS)
PLAN VIEW
CONSTRUCTION SPECIFICATIONS
1. UNIFORMLY GRADE A SHALLOW DEPRESSION APPROACHING THE INLET.
2. DRIVE 5-FOOT STEEL POSTS 2 FEET INTO THE GROUND SURROUNDING THE INLET. SPACE POSTS EVENLY AROUND THE
PERIMETER OF THE INLET, A MAXIMUM OF 4 FEET APART,
3. SURROUND THE POSTS NTH WIRE MESH HARDWARE CLOTH. SECURE THE WIRE MESH TO THE STEEL POSTS AT THE TOP, MIDDLE,
AND BOTTOM. PLACING A 2-FOOT FLAP OF THE WIRE MESH UNDER THE GRAVEL FOR ANCHORING IS RECOMMENDED,
4. PLACE CLEAN GRAVEL (NC DOT #5 OR #57 STONE) ON A 2:1 SLOPE NTH A HEIGHT OF 16 INCHES AROUND THE WIRE, AND
SMOOTH TO AN EVEN GRADE.
5. ONCE THE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED, REMOVE ACCUMULATED SEDIMENT, AND ESTABLISH FINAL
GRADING ELEVATIONS.
6. COMPACT THE AREA PROPERLY AND STABILIZED IT NTH GROUNDCOVER.
MAINTENANCE
INSPECT INLETS AT LEAST WEEKLY AND AFTER EACH SIGNIFICANT (1,4 INCH OR GREATER) RAINFALL EVENT. CLEAR THE MESH WRE
OF ANY DEBRIS OR OTHER OBJECTS TO PROVIDE ADEQUATE FLOW FOR SUBSEQUENT RAINS. TAKE CARE NOT TO DAMAGE OR
UNDERCUT THE WIRE MESH DURING SEDIMENT REMOVAL. REPLACE STONE AS NEEDED.
TEMPORARY CATCH BASIN /YARD INLET PROTECTION DETAIL
NOT TO SCALE
Lo
SECTION 8-8
IF STONE DIAL> 8". PROVIDE GEOTEXTILE UNDERUNER OR
4- (MIN.) #57 WASHED STONE BEDOING MATERIAL
PIPE SIZE
WIDTH
DEPTH
15" - 2e
a.
12"
24* - W
Ir
24*
36' - W
18,
w
IRMO