2021-12-03_REVISION - M2011049 - Laserfiche WebLink

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6" SOIL COVER 3' (2 x D5o) 7� SEEDED WITH TYPE H SOIL RIPRAP �� NATIVE GRASSES io LL LL TOP OF EMBANKMENT 71, \ \ \ VARIES � TYPE H RIPRAP WILLOW CUTTINGS APPROXIMATE 15' AVERAGE \\ \\ \\ \ \\ ROCCHANNEL INVERT \\�\\/ /\\/\\/\\ \ (D oiK TOE FEET) 8" GRANULAR FILTER MATERIAL \\ \\ \\ \\ \\ \\ � J o COMPACTEDPOTENTIAL ROCK ANCHOR Q GRANULAR \ \��\//�//j/ (D.. = 3 FEET) W U 1 EMBANKMENT REPAIR AND MITIGATION DETAIL �OO NOT TO SCALE TOE PROTECTION: 3. LIVE CUTTINGS 0.5 TO 2 INCHES IN DIAMETER AT THE BASAL END AND A MINIMUM OF 6 FEET 5. THE RIPRAP DESIGNATION AND TOTAL THICKNESS SHALL BE AS SHOWN ON THE DRAWINGS. THE IN LENGTH SHALL BE USED SO THAT THE BASAL END OF THE CUTTINGS CAN BE EMBEDDED 1. SLOPE TOE PROTECTION SHALL INCORPORATE LARGE RIVER OR QUARRIED ROCK WITH A DMIN = MAXIMUM STONE SIZE SHALL NOT BE LARGER THAN THE THICKNESS OF THE RIPRAP. DEEP INTO THE GENERAL FILL MATERIAL AND THE GROWING ENDS CAN PROTUDE BEYOND THE 3 FEET. ROCK SHALL HAVE PROPERTIES SIMILAR TO RIPRAP SPECIFICATIONS LISTED BELOW. RIPRAP BY 6 INCHES TO 18 INCHES. 2. APPROXIMATELY 100-150 CUBIC YARDS OF 3 TO 4-FOOT ROCKS ARE AVAILABLE FOR USE AT 6. BROKEN CONCRETE OR ASPHALT SHALL NOT BE ACCEPTABLE FOR USE AS RIPRAP. 4. CUTTINGS SHALL BE PLACED HAVING 6 TO 8 BASAL STEMS PER LINEAR FOOT OF EMBANKMENT. z THE TOE OF EACH REACH. TOTAL ROCK AVAILABLE ON-SIT E FOR USE EQUALS 250 CUBIC THE PLACEMENT SHALL NOT BE IN ONE CONTINUOUS ROW. ELEVA71ON PLACEMENT ALONG THE Q YARDS 7. ALL RIPRAP SHALL BE UNDERLAIN BY 8-INCHES OF GRANULAR FILTER MATERIAL CONFORMING EMBANKMENT SHALL BE STAGGERED IN 10-FOOT TO 30-FOOT LINEAR SECTIONS VARYING THE TO COLORADO DEPARTMENT OF TRANSPORTATION CLASS 4 AGGREGATE BASE MATERIALS. ELEVATION BY 2 OR 3 VERTICAL FEET PER SECTION. THE MAXIMUM ELEVATION FOR CUTTING F 3. ROCK SHALL BE PLACED A MINIMUM 2 FEET BELOW THE EXISTING CHANNEL INVERT AND INSTALLATION SHALL BE NO MORE THAN 5 FEET ABOVE THE CACHE LA POUDRE RIVER NORMAL Q LOCKED IN A CONTINUOUS ROW WITH EACH ROCK MAINTAINING SIGNIFICANT CONTACT WITH WATER HEIGHT. _ (� ADJACENT ROCKS. 8. RIPRAP PLACEMENT SHALL COMMENCE AT THE BOTTOM OF THE SLOPE, WORKING UP THE Q Q SLOPE. 5. RIPRAP NEAR THE TOP OF SLOPE SHALL BE INSTALLED AS SOIL-RIPRAP AND COVERED WITH > — Q 4. IN AREAS WITH EXTREME EMBANKMENT TOE SCOUR, IT MAY BE REQUIRED TO PLACE DEEPER TOPSOIL TO AN APPROXIMATE ELEVATION OF THE CACHE LA POUDRE RIVER 50-YEAR FLOOD Cc CC ANCHOR ROCKS BELOW TOE ROCKS OR PLACE TOE ROCKS WITHIN A RIPRRAP PREPARED KEY 9. RIPRAP SHALL BE PLACED TO FULL COURSE THICKNESS AT ONE OPERATION AND IN SUCH A EVENT (APPROXIMATELY 2 TO 3 VERTICAL FEET FROM TOP OF SLOPE). SOIL RIPRAP SHALL LLI C) O TRENCH. MANNER AS TO AVOID DISTURBING THE UNDERLYING FILTER MATERIAL OR DAMAGING CONSIST OF 65 PERCENT ANGULAR OR FRACTURED ROCK AND 35 PERCENT SOIL BY VOLUME. PREVIOUSLY PLACED WALLOW CUTTINGS. PLACEMENT OF RIPRAP IN LAYERS OR BY DUMPING SOIL RIPRAP SHALL CONSIST OF A UNIFORM MIXTURE OF SOIL AND RIPRAP WITHOUT VOIDS, W z O RIPRAP INTO CHUTES OR BY SIMILAR METHODS SHALL NOT BE PERMITTED. RIPRAP SHALL BE PLACED LEAVING 6 INCHES TO 12 INCHES OF ANGULAR RIPRAP EXPOSED. VIBRATION COMPACT OR Q U FROM A DROP HEIGHT OF NO MORE THAN THREE (3) FEET ABOVE THE SLOPE. EQUIVALENT TO ENSURE ANGULAR RIPRAP INTERLOCKS IN PLACE AROUND SOIL. 1. RIPRAP SHALL BE APPROVED BY THE ENGINEER PRIOR TO PLACEMENT. W Q z 10. THE STONE SHALL BE CONSOLIDATED BY THE BUCKET OF A BACKHOE OR OTHER MEANS THAT 6. TOPSOIL SHALL CONSIST OF NATURAL FRIABLE SANDY LOAM, NATIVE UPLAND TOPSOIL. Y :D 2. RIPRAP USED SHALL BE THE TYPE DESIGNATED ON THE DESIGN DRAWINGS AND SHALL WALL CAUSE INTERLOCKING OF THE MATERIAL. TOPSOIL SHALL BE OBTAINED FROM PRE-APPROVED ON-SITE COLLECTION AREAS OR Q LLI O CONFORM TO THE FOLLOWING: PRE-APPROVED IMPORTED MATERIALS FROM OFF SITE. J U 11. APPROXIMATELY 350-400 CUBIC YARDS OF D50 = 18 INCH RIPRAP IS STAGED AT EACH I r Iz REACH FOR USE. ADDITIONALLY, APPROXIMATELY 100 CUBIC YARDS OF RIPRAP IS LOCATED IN 7. MATERIAL SHALL BE FREE FROM OBJECTS LARGER THAN 1-112 INCHES MAXIMUM DIMENSION Lu z W SMALLER THAN INTERMEDIATE THE STAGING AREA ADJACENT TO REACH 1 FOR USE AS NEEDED. TOTAL RIPRAP ON-SITE FOR INCLUDING HARD CLODS OF HEAVY CLAY, SHALE, DECOMPOSED SHALE OR OTHER SUBSOIL, m w RIPRAP GIVEN SIZE BY ROCK DIMENSION D50-MEAN PARTICLE USE EQUALS 867 CUBIC YARDS. NOXIOUS WEED PARTS, GRASS, REFUSE, ROOTS, BRUSH, OTHER FOREIGN MATTER, HAZARDOUS � DESIGNATION WEIGHT (INCHES) SIZE.(INCHES) OR TOXIC SUBSTANCES AND DELETERIOUS MATERIAL THAT MAY BE HARMFUL TO PLANT 5j- Q GROWTH OR MAY HINDER GRADING, PLANTING, OR MAINTENANCE. Y J 70-100 30 VEGETATED RIPRAP z 50-70 24 1. THE VEGETATED RIPRAP SHALL BE PREPARED USING LIVE WILLOW CUTTINGS WITH A BRUSH 8. TOPSOIL SHALL BE SEEDED WITH .4 PRE-APPROVED SEED MIXTURE OF NATIVE GRASSES SUCH m TYPE is LAYERING OR BRANCH PACKING TECHNIQUE. AS WESTERN WHEAT GRASS, SWITCHGRASS, AND BIG BLUESTEM. 2i 35-50 18 2. LIVE CUTTINGS SHALL BE OBTAINED FROM THE TREIBER LAKES RESERVOIR PROPERTY OR Lij 10-Ech ADJACENT PROPERTIES WITH LAND OWNER PERMISSION. 11MING AND TECHNIQUES FOR LIVE CUTTING HARVESTING SHALL FOLLOW ESTABLISHED LOCAL BEST MANAGEMENT PRACTICES TO MAXIMIZE CUTTING SURVIVAL. MINIMUM BEST MANAGEMENT PRACTICES SHALL INCLUDE v CONSIDERING THE WILLOW GROWING CYCLE OR DEGREE OF DORMANCY AND HANDLING OF o 3. RIPRAP SHALL BE HARD, DURABLE, ANGULAR IN SHAPE, AND FREE FROM CRACKS, CUTTINGS FOLLOWING HARVESTING. FOR EXAMPLE, LIVE CUTTINGS SHALL BE SOAKED j OVERBURDEN, SHALE, AND ORGANIC MATTER. NEITHER BREADTH NOR THICKNESS OF A SINGLE CONTINUOUSLY UNLESS INSTALLED THE DAY THEY ARE HARVESTED. STONE SHOULD BE LESS THAN ONE-THIRD ITS LENGTH, AND ROUNDED STONE SHOULD BE --- (D o AVOIDED. LLI LL LU O O 4. RIPRAP HAVING A MINIMUM SPECIFIC GRAVITY OF 2.65 IS PREFFED; HOWEVER, IN NO CASE _ SHOULD RIPRAP HAVE A SPECIFIC GRAVITY LESS THAN 2.50. U r7