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Home My WebLink About003 C103.pdfF-111111FAR r SEEDBED PREPARATION GOOD SEEDBED PREPARATION IS ESSENTIAL TO SUCCESSFUL PLANT ESTABLISHMENT. A GOOD SEEDBED IS EFT WITH A WELL -PULVERIZED, LOOSE, AND UNIFORM, WHERE HYDROSEEDING METHODS ARE USED, THE SURFACE MAY BE L MORE IRREGULAR SURFACE OF LARGE CLODS AND STONES. FERTILIZE R--BASE APPLICATION RATES ON SOIL TESTS. WHEN THESE ARE NOT POSSIBLE, 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 610B 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), DR�LL, CULTIPACKER SEEDER, OR HYDROSEEDER, USE SEEDING 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 CULT�PACKER, HYDROSEEDED MIXTURES SHOULD INCLUDE A WOOD FIBER (CELLULOSE) MULCH, PERMANENT SEEDING SELECTING PLANT MATERIALS CLIMATE, ISOILS, 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 -MOUNTAINS, PIEDMONT, AND COASTAL PLAIN TO SIMPLIFY PLANT SELECTION, A KEY TO PERMANENT SEEDING MIXTURES IS PRESENTED IN TABLE 6.11 B� 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. MUM ii!iiiiiii"�"'� HYDROSEEDING NEW LAWNS MIX S - P , E , CIF I E D SEED, FERTILIZ ER, 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. MULGHIN(31 AF T - E - RFER , TIL I Z - IN " G, - S " E - EDING, RAKING, AND TILLING, DRIED STRAW IS 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 A RATE OF 150 GALLONS PER TON OF STRAW (APPROXIMATELY 7 GALLONS PER'tO00 SQUARE FEET). MAINTENANCE 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 ARF-A. 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 REQUIR�MENTS 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 (LSIACRE) 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 MOUNITAINS--ABOVE 2500 FEET: FEB. 15 - MAY 15 BELOW 2500 FEET� FEB. 1 - MAY 1 MEDMONT-JAN. 1 - MAY 1 COASTAL PLAIN -DEC. I - APR. 15 SOIL AMENDMENTS FOLLOW RECOMMENDATIONS OF SOIL TESTS OR APPLY 2,000 UWACRE 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 REFERTIUZE If GROWTH IS NOT FULLY ADEQUATE. RESEED, REFERTIL$ZE 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 60 LB/ACRE. SEEDING DATES MOUNTAINS -MAY 15 -AUG. 15 PIEDMONT --MAY 1 -AUG. 15 COASTAL PLAIN --APR. 15 - AUG� 15 - - - . '�!J' 11 � imiumWAN" I : 1 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. MAINTENANCE REFERTILIZE IF GROWTH IS NOT FULLY ADEQUATE- RESEED, REFERTI LIZE AND MULCH IMMEDIATELY FOLLOWING EROSION OR OTHER DAMAGE. TABLE 6.10C TEMPORARY SEEDING RECOMMENDATIONS FOR FALL SEEDING MIXTURE SPECIES RATE (LBIACRE) RYE (GRAIN) 120 SEEDING DATES MOUNTAINS-AUG. 15 - DEC� 15 COASTAL PLAIN AND PI EDMONT-AUG. 15 - DEC. 30 SOIL AMENDMENTS FOLLOW SOIL TESTS OR APPLY 2,000 LBACRE GROUND AGRICULTURAL LIMESTONE AND 1,000 LB/ACRE 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 REPAIR AND REFERTILIZE DAMAGED AREAS IMMEDIATELY. TOPDRESS WITH 60 LBACRE OF NITROGEN IN MARCH. IF IT IS NECESSARY TO EXTENT TEMPORARY COVER BEYOND JUNE IS, OVERSEED WITH 50 LBIACRE KOBE (PIEDMONT AND COASTAL PLAIN) OR KOREAN (MOUNTAINS) LESPEDEZA IN LATE FEBRUARY OR EARLY MARCH. I A MAI 1124 1144 01 I 1012 t BEST POSSIBLE FALL: AUG. 25 - SEPT. 15 FEB- 15 - MAR. 21 LATE WINTER: AUG. 20 - OCT. 26 FEB� 1 - APk 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 LB/ACRE 10-10-10 FERTILIZER. MULCH APPLY 4,000-5,000 LB/ACRE 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 I 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. 2L TO EXTEND SPMNG SEEDING DATES INTO JUNE, ADD 15 LBIACRE HULLED BERMLIDAGRASS. HOWEVER, AFTER MID -APR. IT IS PREFERABLE TO SEED TEMPORARY COVER. NURSE PLANTS BETWEEN MAY I AND AUG. 15, ADD 10 LBACRE GERMAN MILLET OR 15 LB/ACRE SUDANGRASS. PRIOR TO MAY I OR AFTER AUG. 15, ADD 40 LBIACRE RYE (GRAIN). SEEDING DATES BEST POSSIBLE FALL: AUG. 25 - SEPT, 15 FEB, 15 - MAR� 21 LATE WINTER: AUG, 20 - OCT. 25 FEB. 1 -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 LBIACRE GROUND AGRICULTURAL LIMESTONE AND 1,000 LBIAGRE 10-10-10 FERTILIZER, MULCH APPLY 4,000 LBIACRE 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 D AREAS TWICE A YEAR, BUT MOWING IS NOT NECESSARY. RESEED, FERTILIZE, AND MULCH DAMAGE IMMEDIATELY. TABLE 6.11 m SEEDING NO. 3 FOR: GENTLE SLOPES, SOILS WITH AVERAGE OR BETTER MOISTURE RETENTION, COOLER SITES; HIGH MAINTENANCE SEEDING MIXTURE SPECIES1 RATE (LBIACRE) BLEND OF TWO TURF -TYPE TALL FESCUES (90%) AND TWO OR 200-250 MORE IMPROVED KENTUCKY BLUEGRASS VARIETIES (10%) SEEDING DATES BEST POSSIBLE FALL� AUG. 25 - SEPT. 15 FEB. 15 - MAR, 21 -------- - FEB� I - APR� 15 FOR QUALITY TURF, AVOID SPRING SEEDING. WHERE GRADING IS COMPLETED DURING LATE WINTER OR SPRING, AN ALTERNATIVE IS TO SEED 30 LBIACRE 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 LEVACRE SMALL GRAIN STRAW OR EQUIVALENT COVER OF ANOTHER SUITABL 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 LBIACRE NITROGEN IN JAN. OR FEB., 40 LB IN SEPT., AND 40 LB IN NOV., FROM A 12-4-8,16-4-8, OR SWILAR TURF FERTILIZER. AVOID SSES TO FERTILIZER APPLICATIONS DURING WARM WEATHER, AS THIS INCREASES STAND LO DISEASE, MOW TO A HEIGHT OF 2.5-3.5 INCHES AS NEEDED. RESEED, FERTILIZE, AND MULCH DAMAGED AREAS IMMEDIATELY, TABLE 6.11 o SEEDING NO. 5 FOR: GRASS -LINED CHANNELS SEEDING MIXTURE SPECIES1 RATE (LBIACRE) TALL FESCUE 200 (4-5 LB/1,000 FT) NURSE PLANTS BETWEEN MAY 1 AND AUG. 15, ADD 15 LBACRE SUDANGRASS OR 15 LB/ACRF GERMAN MILLET, PRIOR TO MAY 1 OR AFTER AUG. 15, ADD 40 LB/ACRE 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 UNING THAT OFFERS MAXIMUM PROTECTION. 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. OPERATE TILLAGE EQUIPMENT ACROSS THE WATERWAY. MULCH USE A ROLLED 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 LBACRE 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 WINTER OF THE FOLLOWING YEAR; USE SOIL TESTS OR APPLY 150 LBIACRE 10-10-10. MOW REGULARLY TO A HEIGHT OF 2-4 INCHES. 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 WER IN INTERMITTENT OR PERENNIAL STREAMS. CONSTRUCTION SPECIFICATIONS 1. PLACE STRUCTURAL STONE (CLASS 8) TO THE LINES AND DIMENSIONS SHOWN IN THE PLAN ON A FILTER FABRIC FOUNDATION. THE CREST WIDTH OF THE DAM SHOULD BE A MINIMUM OF 2 FEET. 2. KEEP THE CENTER STONE SECTION AT LEAST 9 INCHES BELOW NATURAL GROUND LEVEL IAVERE THE DAM ABUTS THE CHANNEL BANKS. 3. PLACE SEDIMENT CONTROL STONE (#5 OR #57) ON THE UPSTREAM SIDE OF THE DAM THAT 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 THE 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. LE. 6� MAKE SURE THAT THE CHANNEL REACH ABOVE THE MOST UPSTREAM DAM IS STAB 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 THAT COULD CLOG THE CHANNEL WHEN NEEDED. ANTICIPATE SUBMERGENCE AND DEPOSITION 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 SEDIMENT OVER THE DAM. ADD STONES TO DAMS AS NEEDED TO MAINTAIN DESIGN HEIGHT AND CROSS SECTION. CHECK DAM WITH A WEIR DETAIL NOT TO SCALE MAMA Lo FOR SIZE OF FOOTING - SEE NaM SECTION A -A IF STONE DIA.> 8. PROVIDE GEOTEXTILE UNDERUNIER OR 4- (MIN.) #57 WASHED STONE BEDDING MATERIAL TYPE A: PIPE OUTLET TO FLAT AREA WITH NO DEFINED CHANNEL ROWENA I !E CLOTH FILTERED WATER TR7) SECTION 8-9 IF STONE DIAL> S'. PROMDE GE07EXTU UNDERUNER OR 4- (MIN.) #57 WASHED STONE BEDDING MATERIAL TYPE 8: PIPE OUTLET TO WELL- DEFINED CHANNEL APPOW swomm Lm c\j N ui d uj CAR Vk E 911 1 o.......... o 0 0 Lu of z UJ 0 0 z x ui a. V) z 0 < I Ad V) z 0 (n :> Lli of 0