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Home My WebLink AboutGROWTH LEASING COLORADO - BDR190008 - SUBMITTAL DOCUMENTS - ROUND 2 - EROSION CONTROL LETTER/REPORTSheet GROWTH LEASING COLORADO These drawings are instruments of service provided by Northern Engineering Services, Inc. and are not to be used for any type of construction unless signed and sealed by a Professional Engineer in the employ of Northern Engineering Services, Inc. NOT FOR CONSTRUCTION REVIEW SET E NGINEER ING N O R T H E RN FORT COLLINS: 301 North Howes Street, Suite 100, 80521 GREELEY: 820 8th Street, 80631 970.221.4158 northernengineering.com of 16 CALL UTILITY NOTIFICATION CENTER OF COLORADO Know what'sbelow. Call before you dig. R City Engineer Date Date Date Date Date Stormwater Utility Parks & Recreation Traffic Engineer Date Water & Wastewater Utility City of Fort Collins, Colorado UTILITY PLAN APPROVAL Environmental Planner EC2 EROSION CONTROL DETAILS 10 WATTLE INSTALLATION FLOW 3'-4' ADJACENT ROLLS SHALL TIGHTLY ABUT W1 NOTES: INSTALLATION: WHEN INSTALLING RUNNING LENGTHS OF WATTLES, BUTT THE SECOND WATTLE TIGHTLY AGAINST THE FIRST, DO NOT OVERLAP THE ENDS. STAKE THE WATTLES AT EACH END AND FOUR FOOT ON CENTER. FOR EXAMPLE: A 25 FOOT WATTLE USES 6 STAKES A 20 FOOT WATTLE USES 5 STAKES A 12 FOOT WATTLE USES 4 STAKES STAKES SHOULD BE DRIVEN THROUGH THE MIDDLE OF THE WATTLE. LEAVING 2 - 3 INCHES OF THE STAKE PROTRUDING ABOVE THE WATTLE. A HEAVY SEDIMENT LOAD WILL TEND TO PICK THE WATTLE UP AND COULD PULL IT OFF THE STAKES IF THEY ARE DRIVEN DOWN TOO LOW. IT MAY BE NECESSARY TO MAKE A HOLE IN THE WATTLE WITH A PICK END OF YOUR MADDOX IN ORDER TO GET THE STAKE THROUGH THE STRAW. WHEN STRAW WATTLES ARE USED FOR FLAT GROUND APPLICATIONS, DRIVE THE STAKES STRAIGHT DOWN; WHEN INSTALLING WATTLES ON SLOPES, DRIVE THE STAKES PERPENDICULAR TO THE SLOPE. DRIVE THE FIRST END STAKE OF THE SECOND WATTLE AT AN ANGLE TOWARD THE FIRST WATTLE IN ORDER TO HELP ABUT THEM TIGHTLY TOGETHER. IF YOU HAVE DIFFICULTY DRIVING THE STAKE INTO EXTREMELY HARD OR ROCKY SLOPES, A PILOT BAR MAY BE NEEDED TO BEGIN THE STAKE HOLE. 1"x 1" WOOD STAKES 18"-24" BAILING WIRE OR NYLON ROPE WATTLE "A" WATTLE "B" 1' 2' TYP. 1' 1' W2 NOTES: INSTALLATION: STAKES SHOULD BE DRIVEN ACROSS FROM EACH OTHER AND ON EACH SIDE OF THE WATTLE. LEAVING 4"-6" OF STAKE PROTRUDING ABOVE THE WATTLE. BAILING WIRE OR NYLON ROPE SHOULD BE TIED TO THE STAKES ACROSS THE WATTLE. STAKES SHOULD THEN BE DRIVEN UNTIL THE BAILING WIRE OR NYLON ROPE IS SUFFICIENTLY SNUG TO THE WATTLE. WHEN INSTALLING RUNNING LENGTHS OF WATTLES, TO PREVENT SHIFTING, BUTT THE SECOND WATTLE TIGHTLY AGAINST THE FIRST. DO NOT OVERLAP THE ENDS. STAKES SHOULD BE DRIVEN 1 FT. FROM END, ACROSS FROM AND ON EACH SIDE OF WATTLE LEAVING 4"-6" OF STAKE PROTRUDING ABOVE THE WATTLE. BAILING WIRE OR NYLON ROPE SHOULD BE TIED TO STAKES IN AN HOUR GLASS FORMATION (FRONT TO BACK OF WATTLE "A", ACROSS TO FRONT OF WATTLE "B", ACROSS TO BACK AND BACK TO FRONT OF WATTLE "A"). STAKES SHOULD THEN BE DRIVEN IN UNTIL BAILING WIRE OR NYLON ROPE IS SUFFICIENTLY SNUG TO THE WATTLE. W1 & W2 INSTALLATION NOTES: 1. THE LOCATION AND LENGTH OF WATTLE IS DEPENDENT ON THE CONDITIONS OF EACH SITE. 2. WATTLES SHALL BE INSTALLED PRIOR TO ANY LAND-DISTURBING ACTIVITIES. 3. WATTLES SHALL CONSIST OF STRAW, COMPOST, EXCELSIOR, OR COCONUT FIBER. 4. NOT FOR USE IN CONCENTRATED FLOW AREAS. 5. THE WATTLES SHALL BE TRENCHED INTO THE GROUND A MINIMUM OF TWO (2) INCHES. 6. WATTLES SHALL BE INSTALLED PER MANUFACTURERS SPECIFICATIONS. 7. ON SLOPES, WATTLES SHOULD BE INSTALLED ON CONTOUR WITH A SLIGHT DOWNWARD ANGLE AT THE END OF THE ROW IN ORDER TO PREVENT PONDING AT THE MID SECTION. 8. RUNNING LENGTHS OF WATTLES SHOULD BE ABUTTED FIRMLY TO ENSURE NO LEAKAGE AT THE ABUTMENTS. 9. SPACING - DOWNSLOPE: 10. VERTICAL SPACING FOR SLOPE INSTALLATIONS SHOULD BE DETERMINED BY SITE CONDITIONS. SLOPE GRADIENT AND SOIL TYPE ARE THE MAIN FACTORS. A GOOD RULE OF THUMB IS: 1:1 SLOPES = 10 FEET APART 2:1 SLOPES = 20 FEET APART 3:1 SLOPES = 30 FEET APART 4:1 SLOPES = 40 FEET APART, ETC. 11. HOWEVER, ADJUSTMENTS MAY HAVE TO BE MADE FOR THE SOIL TYPE: FOR SOFT, LOAMY SOILS - ADJUST THE ROWS CLOSER TOGETHER; FOR HARD, ROCKY SOILS - ADJUST THE ROWS FURTHER APART. A SECONDARY WATTLE PLACED BEHIND THE ABUTMENT OF TWO WATTLES IS ENCOURAGED ON STEEP SLOPES OR WHERE JOINTS HAVE FAILED IN THE PAST. 12. STAKING: THE CITY RECOMMENDS USING WOOD STAKES TO SECURE THE WATTLES. 1/2" TO 5/8" REBAR IS ALSO ACCEPTABLE. BE SURE TO USE A STAKE THAT IS LONG ENOUGH TO PROTRUDE SEVERAL INCHES ABOVE THE WATTLE: 18" IS A GOOD LENGTH FOR HARD, ROCKY SOIL. FOR SOFT LOAMY SOIL USE A 24" STAKE. 1"x 1" WOOD STAKES 18"-24" ENDS OF ADJACENT WATTLES SHALL BE TIGHTLY ABUTTED TO PREVENT SEDIMENT BYPASS W2 NOTE: ONLY WATTLES MADE WITH COCONUT FIBERS SHALL BE USED WHEN INSTALLATION COMES IN CONTACT WITH A WATER BODY. 008 WP CONCRETE WASHOUT AREA CWA 003 004 ROCK SOCK DETAIL ROCK SOCK SECTION ROCK SOCK PLAN ROCK SOCK JOINTING GRADATION TABLE SIEVE SIZE MASS PERCENT PASSING SQUARE MESH SIEVES NO. 4 2" 100 1-1/2" 90-100 1" 20-55 3/4" 0-15 3/8" 0-5 MATCHES SPECIFICATIONS FOR NO. 4 COARSE AGGREGATE FOR CONCRETE PER AASHTO M43. ALL ROCK SHALL BE FRACTURED FACE, ALL SIDES RS VEHICLE CONTROL TRACKING PAD VTC 005 WATTLE WATTLE OR NOTE: INSTALLATION OF WATTLE STAKES MAY VARY WITH NO GAPS (TYP.) TIGHTLY ABUTTING ENTRENCH 3" FLOW FLOW NOTE: ENTRENCH WATTLE 3" INTO NATURAL GROUND AT THE OUTSIDE EDGE OF CONCRETE APRON IP1 001 DROP INLET PROTECTION CURB INLET PROTECTION IP3 006 002 SILT FENCE AT PIPE OUTLET AREAS OF STREAMS AND DRAINAGE CHANNELS - DETAIL A IN DIVERSION DITCH OR SMALL DITCH DRAINAGE WAY - DETAIL B OUTSIDE OF STREAMS AND DRAINAGE CHANNELS - DETAIL C ANCHOR DETAILS PERIMETER ANCHOR TRENCH JOINT ANCHOR TRENCH INTERMEDIATE ANCHOR TRENCH OVERLAPPING JOINT WOOD STAKE DETAIL MINIMUM THICKNESS 1" USE 2x4 MATERIAL FOR STAKES JOINT ANCHOR TRENCH, TYP. PERIMETER ANCHOR TRENCH, TYP. TOP OF CHANNEL BANK TYPE OF BLANKET AS INDICATED IN PLAN VIEW, IN ALL DISTURBED AREAS OF STREAMS AND DRAINAGE CHANNELS TO DEPTH "D" ABOVE CHANNEL INVERT. BLANKET SHALL GENERALLY BE ORIENTED PARALLEL TO FLOW DIRECTION. STAKING PATTERN SHALL MATCH BLANKET TYPE. UNDISTURBED SOIL TYPE OF BLANKET, PER MANUFACTURER SPEC. OR TYPE 2 OR 3 STAKING INDICATED IN PLAN VIEW (MATCH SPECIFIED BLANKET TYPE) SEE THE STAKING PATTERNS DETAIL ON NEXT SHEET PERIMETER ANCHOR TRENCH, TYP. JOINT ANCHOR TRENCH, TYP. COMPACTED SUBGRADE 1 >3 THE BLANKET SHALL BE EXTENDED TO THE TOP OF CHANNEL "D" 6" TOPSOIL "M" OVERLAPPING JOINT, SEE DETAIL ON THIS SHEET STAGGER OVERLAPS PERIMETER ANCHOR TRENCH SEE DETAIL ON THIS SHEET PER MANUFACTURER SPEC. OR TYPE 1 STAKING SEE THE STAKING PATTERN DETAIL ON NEXT SHEET BLANKET SHALL BE 100% STRAW MIN. DIVERSION DITCH TYPICALLY AT TOP OF SLOPE 6" TOPSOIL 6" MIN. (TYP.) 3" MIN. (TYP.) SINGLE EDGE EROSION CONTROL BLANKET (TYP.) COMPACTED BACKFILL (TYP.) STAKE (TYP.) TWO EDGES OF TWO ADJACENT ROLLS LOOP FROM MIDDLE OF ROLL FLOW 6" 3" MIN. 12" MIN. STAKING PATTERNS SHALL BE IN ACCORDANCE WITH MANUFACTURER'S SPECIFICATION. IF NO MANUFACTURER'S SPECIFICATION IS AVAILABLE USE THE ACCEPTABLE STAKING PATTERN (AS SHOWN ABOVE) PERIMETER ANCHOR TRENCH OR JOINT ANCHOR TRENCH, TYP. STRAW-COCONUT COCONUT OR EXCELSIOR STRAW ROLL WIDTH "W" (TYP.) 6' 3' 1/2 "W" 1/2 "W" 1/2 "W" 1/2 "W" 1/2 "W" 4' 3' 2' ECB EROSION CONTROL BLANKET TYPE TYPE STRAW* STRAW-COCONUT EXCELSIOR COCONUT CONTENT - 30% MIN. - STRAW CONTENT 100% - NETTING MIN. DOUBLE/NATURAL 100% - - EXCELSIOR CONTENT COCONUT 100% - - * FOR OUTSIDE OF STREAMS AND DRAINAGE CHANNELS DOUBLE/NATURAL DOUBLE/NATURAL DOUBLE/NATURAL 70% MAX. 007 EROSION CONTROL BLANKET 009 OUTLET PROTECTION A A PLAN VIEW SECTION A-A 2:1 OP WQCV