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HomeMy WebLinkAboutNCG020920Al rN 0 10.0' Min. 10% SETTLEMENT III-III-III=IIIA � I I I_ 25' Max. ,��` III-III-III-III=III=1 I- '2,, III III III III III III III y `�' III -III III -III -III -III -III III=+ III III III III -III III III -I EXCAVATION II-III-III=III=III ;III-III=111=11I II AREA SPECIFICATIONS: 1. ADD SILT FENCE AROUND STOCKPILE IF NEEDED. 2. CONSTRUCT STOCKPILE TO FULL DIMENSIONS AS NEEDED -ALLOW 10% FOR SETTLING. 3. SEED AND MULCH PER STABILIZATION TIMEFRAMES. CROSS-SECTION OF STOCKPILE(S), TYP. NOT TO SCALE EROSION CONTROL MAINTENANCE 1. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED FOR STABILITY AND OPERATION FOLLOWING EVERY RUNOFF -PRODUCING RAINFALL, BUT IN NO CASE, LESS THAN ONCE EVERY WEEK AND WITHIN 24 HOURS OF EVERY HALF INCH RAINFALL. 2. ALL POINTS OF EGRESS WILL HAVE CONSTRUCTION ENTRANCES/EXITS THAT WILL BE PERIODICALLY TOP -DRESSED WITH 2-3" COARSE STONE TO MAINTAIN 6" THICKNESS. ENTRANCES/EXITS WILL BE MAINTAINED IN A CONDITION TO PREVENT MUD OR SEDIMENT FROM LEAVING THE SITE. IMMEDIATELY REMOVE OBJECTIONABLE MATERIAL SPILLED, WASHED, OR TRACKED ONTO THE CONSTRUCTION ENTRANCE/EXIT OR PUBLIC ROADWAYS. (NCDENR PRACTICE 6.06) 3. SEDIMENT WILL BE REMOVED FROM BEHIND THE SEDIMENT FENCE WHEN IT BECOMES HALF-FILLED. THE SEDIMENT FENCE WILL BE REPAIRED AS NECESSARY TO MAINTAIN A BARRIER. STAKES MUST BE STEEL. STAKE SPACING WILL BE 6 FEET MAX. WITH THE USE OF EXTRA STRENGTH FABRIC, WITHOUT WIRE BACKING. STAKE SPACING WILL BE 8 FEET MAX. WHEN STANDARD STRENGTH FABRIC AND WIRE BACKING ARE USED. IF ROCK FILTERS ARE DESIGNED AT LOW POINTS IN THE SEDIMENT FENCE THE ROCK WILL BE REPAIRED OR REPLACED IF IT BECOMES HALF FULL OF SEDIMENT, NO LONGER DRAINS AS DESIGNED OR IS DAMAGED. (NCDENR PRACTICE 6.62) 4. ALL SEEDED AREAS WILL BE FERTILIZED, RE -SEEDED AS NECESSARY AND MULCHED ACCORDING TO SPECIFICATIONS IN THE VEGETATIVE PLAN TO MAINTAIN A VIGOROUS, DENSE VEGETATIVE COVER. THE ANGLE FOR GRADED SLOPES AND FILLS SHALL BE NO GREATER THAN THE ANGLE THAT CAN BE RETAINED BY VEGETATIVE COVER OR OTHER ADEQUATE EROSION CONTROL DEVICES OR STRUCTURES. IN ANY EVENT, SHORT, FLAT SLOPES (FLATTER THAN 3:1 AND LESS THAN 50') LEFT EXPOSED WILL, WITHIN 14 CALENDAR DAYS OF COMPLETION OF ANY GRADING, BE PLANTED OR OTHERWISE PROVIDED WITH TEMPORARY OR PERMANENT GROUND COVER, DEVISES, OR STRUCTURES SUFFICIENT TO RESTRAIN EROSION. ALL OTHER AREAS SHOULD BE STABILIZED WITHIN 7 DAYS AFTER ANY PHASE OF ACTIVITY. COMMON NAME BOTANICAL NAME SPECIES SEED RATES FERTILIZATION & PLANTING 3.00 3.00 w/ 4 other seed species Browntop Millet Urochloa ramosa Ibs/acre LIMESTONE DATES Rye Grain Secale cereale Nurse Crop 40 By Soil Test 8/15-4/15 Wheat Triticum aestivum Nurse Crop 30 By Soil Test 8/15-4/15 NOTES German Millet Setaria italica Nurse Crop 10 By Soil Test 4/15-8/15 3.00 3.00 w/ 4 other seed species Browntop Millet Urochloa ramosa Nurse Crop 10 By Soil Test 4/15-8/15 Leersia cryzoides Kobe Lespedeza Kummerwia striata v. kobe Nurse Crop 10 By Soil Test 5/1 - 9/1 3.00 3.00 w/ 4 other seed species Sercicea Lespedeza Lespedeza cuneata 'Dumont' Non-native 15 By Soil Test 10/1 - 4/1 Leersia cryzoides Centipede Grass Eremochloa ophiuroic Non-native 5-10 By Soil Test 9/1 - 5/1 4-6 KY 31 Tall Fescue Schedonorus phoenix Non-native 100 By Soil Test 9/30-3/15 2.50 w/ 3 other seed species Bermuda Grass Cynodon dactylon Non-native 25 By Soil Test 4/15-6/30 NETS/MATTING Switchgrass Panicum virgatum Native 3.50 By Soil Test 12/1 - 4/1 3.50 w/ 3 other seed species 2.50 w/ 3 other seed species cheyenne carthage, shelter, & blackwell 3.00 3.00 w/ 4 other seed species 2.00 w/ 4 other seed species 1 - 2 1.50 2.50 2.50 w/ 5 other seed species 1.50 w/ 5 other seed species Rice Cutgrass Leersia cryzoides Native 6.00 By Soil Test 12/1 -4/1 6.00 w/ 3 other seed species 2.50 w/ 3 other seed species Eal 2.00 5.00 5.00 w/ 4 other seed species 2.00 w/ 4 other seed species 4-6 1.50 4.00 4.00 w/ 5 other seed species 1.50 w/ 5 other seed species Sweet Woodreed Soft Rush Shallow Sedge Fox Sedge Cinna arundinacea Native 2.50 By Soil Test 12/1 -4/1 2.50 w/ 3 other seed species cheyenne 2.00 C!� 2.00 w/ 4 other seed species 1 - 2 1.50 Wood Chips 1.50 w/ 5 other seed species Juncus effusus Native 2.50 By Soil Test 12/1 -4/15 2.50 w/ 3 other seed species Eal 2.00 Air dry; shredded; chipped 2.00 w/ 4 other seed species 4-6 1.50 Sericea: 1.50 w/ 5 other seed species Carexpincidea Native 2.50 By Soil Test 12/1 -4/15 2.50 w/ 3 other seed species Carexlurida 2.00 ALLOWED 2.00 w/ 4 other seed species Cover area 1.50 NETS/MATTING 1.50 w/ 5 other seed species AAA PERMANENT SEEDING RECOMMENDATIONS FOR RECLAIMED EXCAVATION AREAS MULCHING SPECIFICATIONS 1. MULCH TEMPORARY OR PERMANENT SEEDINGS IMMEDIATELY. AREAS THAT CANNOT BE SEEDED ACCORDING TO THE PLANTING DATES SHOULD BE MULCHED TO PROVIDE TEMPORARY PROTECTION OF OPEN AREAS, SHRUBS, AND TREES. USE AN ORGANIC MULCH EXCEPT WOOD FIBERS FOR THE TEMPORARY PROTECTION. 2. CHEMICAL STABILIZERS MAY BE USED, BUT IT IS NOT RECOMMENDED FOR VEGETATION GROWTH. REFER TO THE EROSION CONTROL MANUAL FOR A LIST OF STABILIZERS AND FOLLOW MANUFACTURER'S SPECIFICATIONS. CONTRACTOR SHALL BE RESPONSIBLE FOR CLEANING AND RESTORING TO PRE -CONSTRUCTION CONDITIONS ANY AREAS OUTSIDE THE PROJECT LIMITS THAT MAY INADVERTENTLY BE DAMAGED DUE TO THE FAILURE OF THE EROSION MEASURES DURING GRADING AND AFTER GRADING HAS BEEN COMPLETED. 3. THE FOLLOWING TABLE IS REFERENCED FROM NC EROSION CONTROL MANUAL SEC. 6-14. MATERIAL RATE QUALITY STABILIZATION ORGANICS tons/acre C!� Straw 1 - 2 Dry; avoid weeds Wood Chips 5 - 6 Air dry Wood Fiber 0.5-1 O Bark 35 cy/acre Air dry; shredded; chipped Corn Stalks 4-6 Cut in 4-6 inch lengths Sericea: 1 - 3 Green or dry; mature seed within lespedeza (V\\ i\ STEEPER THAN 2:1, 14 DAYS ARE seed -bearing \\ \\ 4" X 8" TRENCH LINED W/ 12" % OF FABRIC AND ALLOWED stems Cover area heavy & uniform NETS/MATTING Jute net Fiberglass net Cover area NOTES: Excelsior Cover area 1. WIRE FENCE (IF USED) SHALL BE MINIMUM 14 GAUGE WITH A MAXIMUM MESH (wood fiber mat) OPENING OF 6 -INCHES. Fiberglass roving 0.5 - 1 Continuous fibers with non-toxic agent GROUND STABILIZATION CRITERIA STEEL POST & MAX. STD. STRENGTH FABRIC W/ WIRE FENCE STABILIZATION STABILIZATION TOP STRAND MIN. #14 GAUGE C!� z TIMEFRAME TIMEFRAME EXCEPTIONS STAY AND WIRES MIN. 414 GAUGE 2 7 DAYS NONE 4 q xc� � O HIGH QUALITY WATER ZONES 7 DAYS \/\/\/\/ BOTTOM STRAND MIN. #14 GAUGE SLOPES STEEPER THAN 3:1 7 DAYS o\ /X (V\\ i\ STEEPER THAN 2:1, 14 DAYS ARE \\ \\ 4" X 8" TRENCH LINED W/ 12" % OF FABRIC AND ALLOWED SLOPES 3:1 OR FLATTER 14 DAYS 7 DAYS FOR SLOPES GREATER COMPACTED FILL ON TOP THAN 50 FT IN LENGTH ALL OTHER AREAS WITH SLOPES NOTES: NONE (EXCEPT FOR PERIMETERS FLATTER THAN 4:1 1. WIRE FENCE (IF USED) SHALL BE MINIMUM 14 GAUGE WITH A MAXIMUM MESH AND HQW ZONES) OPENING OF 6 -INCHES. 2. SYNTHETIC FILTER FABRIC OF AT LEAST 95% BY WEIGHT OF POLYOLEFIN'S OR POLYESTER, WHICH IS CERTIFIED BY THE MANUFACTURER OR SUPPLIER AS CONFORMING TO THE REQUIREMENTS IN ASTM D 6461 AND ALSO SHOULD CONTAIN ULTRAVIOLET RAY INHIBITORS AND STABILIZERS ACCORDING TO ASTM D 4355. 3. SEE THE NC EROSION CONTROL MANUAL FOR SPECIFICATIONS Ln (7) �a�ncncn �zmmm °' INSTALLING SEDIMENT FENCE USING THE SLICING METHOD MACHINERY. Z O L0 p SILT FENCE H a NOT TO SCALE GROUND STABILIZATION CRITERIA STABILIZATION STABILIZATION SITE AREA DESCRIPTION C!� TIMEFRAME TIMEFRAME EXCEPTIONS PERIMETER DIKES, SWALES, 7 DAYS NONE DITCHES AND SLOPES � O HIGH QUALITY WATER ZONES 7 DAYS NONE IF SLOPES ARE 10 FT OR LESS IN SLOPES STEEPER THAN 3:1 7 DAYS IN LENGTH AND ARE NOT STEEPER THAN 2:1, 14 DAYS ARE ALLOWED SLOPES 3:1 OR FLATTER 14 DAYS 7 DAYS FOR SLOPES GREATER THAN 50 FT IN LENGTH ALL OTHER AREAS WITH SLOPES NONE (EXCEPT FOR PERIMETERS FLATTER THAN 4:1 14 DAYS AND HQW ZONES) NPDES PERMIT NCG 010000 PLAN NOTES: 1. ACCORDING TO NPDES NCG 010000 EFFECTIVE AUGUST 3, 2011: THE PLANS SHALL CONFORM TO GROUND STABLIZIATION REQUIREMENTS OF SECTION II.6.2 GROUND STABILIZATION. 2. ACCORDING TO NPDES NCG 010000 EFFECTIVE AUGUST 3,2011: THE SEDIMENT BASINS SHALL CONFORM TO SURFACE WITHDRAWAL REQUIREMENTS OF SECTION II.B.4 SEDIMENT BASINS. VEGETATION PLAN SPECIFICATIONS 1. ALL DISTURBED AREAS SHALL BE DRESSED TO THE EXISTING TYPICAL SECTION AND TILLED OR RIPPED TO A MIN. DEPTH OF 4 -INCHES. THE TOP 2 INCHES SHALL BE PULVERIZED TO PROVIDE A UNIFORM SEEDBED. 2. LIME AND FERTILIZER SHOULD BE INCORPORATED INTO THE SOIL PRIOR TO SEEDING OR SOD. FOLLOW SOIL TESTS OR AS FOLLOWS: AGRICULTURAL LIMESTONE - 2 TONS/ACRE FERTILIZER - 1000 LBS/ACRE (10-10-10) SUPERPHOSPHATE - 500 LBS/ACRE (20%) MULCH - 2 TONS/ACRE (SMALL GRAIN STRAW) ANCHOR - ASPHALT EMULSION AT 450 GAL/ACRE 3. FOR OPEN AREAS, USE STRAW MULCH AS A MINIMUM FOR STABILIZATION IF THE AREAS CANNOT BE SEEDED ACCORDING TO THE PLANTING DATES. OTHER MULCHING PRACTICES ARE LISTED IN SECTION 6.14 OF THE EROSION CONTROL MANUAL FOR MULCHING. 4. FOR DITCHES AND SLOPES, USE EXCELSIOR MATTING AS A MINIMUM FOR STABILIZATION IF THE AREAS CANNOT BE SEEDED ACCORDING TO THE PLANTING DATES. OTHER MATTING PRACTICES ARE LISTED IN SECTION 6.14 OF THE EROSION CONTROL MANUAL FOR MULCHING. 5. CHEMICAL STABILIZERS MAY BE USED, BUT IT IS NOT RECOMMENDED FOR VEGETATION GROWTH. REFER TO THE EROSION CONTROL MANUAL FOR A LIST OF STABILIZERS AND FOLLOW MANUFACTURER'S SPECIFICATIONS. 6. THE FOLLOWING TABLES ARE REFERENCED FROM NC EROSION CONTROL MANUAL SEC. 6.10 AND 6.11, AND THE STABILIZATION TABLE IS REFERENCED FROM NPDES NCG 010000. 1044 00 °ao °• 84 0 HAUL RD o�0 (TYP) °>go0 g � 15-20 FT ° SILT FENCE, TYP. FARM PATH/HAUL ROAD NOTE: 1. RE -COMPACT ROAD WITH MIXTURE OF GRAVEL, SILT, AND EXISTING SOIL IN SPOTS AS NECESSARY ALONG PATH. 2. VEGETATE PER STABILIZATION TIMEFRAMES. CROSS-SECTION OF HAUL ROAD NOT TO SCALE A) Tigerfloc Tube: 84" (L) x 4" (W) Layflat hose secured with 2"-4" camlock fittings; with Tigerfloc Belts which are inserted individually or two at a time into the Tigerfloc Tube. B) 2" Pump Hose: min 50' length for optimal unit performance. C) Dewatering Bag: 15'x 15' size manufactured by Floc Systems Inc. The Dewatering Bags are custom cut and assembled with seam fold to ensure sediment material does not escape at the seam as it does with other dewatering bags. NOTE: CONTRACTOR SHALL SUBMIT SHOP DRAWING TO ENGINEER FOR APPROVED EQUAL SETUP OR PRODUCT(S). TIGER -FLOC TUBE AND SEDIMENT BAG DEWATERING TREATMENT DEVICE NOT TO SCALE TOP OF BORROW PIT= 1 00' ± I-III=1 111=111= =- -I 1II o TOP POND= 96'± �= --1 I 7 ��. I I=1 I '�-_ �-III-I IL -I MAX. BOTTOM = 90'± - 11111-1 -ill, _III IIII�I' 'III' Illil-IIiIi'-'II ,II1=1IF II RECLAMATION NOTES: 1. RECLAIM SLOPES TO 3:1 OR FLATTER. 2. VEGETATE PER PERMANENT SEEDING AND MULCHING SPECIFICATIONS. 3. IF ANY GROUNDWATER IS PRESENT, AND A POND IS DESIRED, THE WATER DEPTH MUST BE MIN. 4 -FT PER STATE RECLAMATION STANDARDS. CROSS-SECTION OF EXCAVATION PIT & FINAL RECLAIMED POND NOT TO SCALE Z O w rW. O l ZOc o w _ O O N � •� G1 oo t` N Z � W OQ UZ� U W N 0 Z � 4� 0 �Z �o W M-2 C!� H W � O H �O� O U H Ln (7) �a�ncncn �zmmm °' 00 L0 L0 Z O L0 p H a U Q ~ > > z 00 z o O LL. F_ J J d Z_ U <�(DLL LL D zj3 0 Z_ OLU O W O C C) :D > Q 6i p z Z Y 9 U J W z d L) CL _X D _j oaioo0 SEAL °Dss/ S AL' 034354 - ENGINE 6-1Y-17 M-2