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HomeMy WebLinkAboutS-392150Cn=Sign Envelope ID: 6EECF5B8-6D2A-4E4A-B436-A317AA638878 DocuSign Envelope ID: 6EECF5B8-6D2A-4E4A-B436-A317AA638878 Cn=Sign Envelope ID: 6EECF5B8-6D2A-4E4A-B436-A317AA638878 roll O N 0 M U Z O (n LJ U W U fl w D � m O* 'TRACKING" WITH MACHINERY UP AND DDWN THE SLOPE PROVIDES GROOVES THAT WILL CATCH SEER, RAINFALL ANR REM Jj E RUNOFF, TRACKING y 1 B' MIN. GROOVES WILL CATCH SEED, FERTILIZER, MULCH, RAINFALL_ - '�11r 3 MAIL z d AND DECREASE RUNOFF CONTOUR FURROWS S, CONDITIONS OF USE 1.1. ALL A34 SLOPES STEEPER TH3H:IV AND GREATER THAN 5.VERTICAL FEET REDUI RE SURFACE RQUf'HENING TO A DE PTIJ OF 2 TO 4 INCHES PRIOR TO SEEDING 1.2. AREAS THAT WALL NOT BE STABILIZE!] IMMEDIATELY MAY BE ROUGH LNEO TO REDUCE RUNOFF VELOCITY UNTIL SEEDING MAKES PLACE. 1 S. SLOPES WITH A STABLE ROCK FACE DO NOT REQUIRE ROUGHENING. 1.4. SLOPES WHERE MOWING IS PLANNED SJ{OULD NOT BE EXCESSIVELY ROUGHENED. 2. MSIGN AND ANSTALIATION SPECIFICATIONS 2.1, DISTURBED AREAS THAT WILL NOT REQUIRE MOWING MAY BE STAIR -STEP GRADED. GROOVED, OR LEFT ROUGH AFTER FILLING. 2.2 STAIR STEP GRADING IS PARTICULARLY APPROPRIATE IN SOILS CONTAINING LARGE AMCUNTS OF SOFT ROCK. STAIR &IOULD BE WIDE ENOUGH TO WORK WITH STANDARD EARTh MOVING EOU PMENT- STAIRS STEPS MUST BE ON CONTOURS OR GULLIES WILL FORM ON THE SLOPE. 2-3. AREAS THAT WILL BE MOWED, MAY HAVE SMALL FURROWS LEFT BY DISKING. HARROWING, RAKING, OR SEED -PLANTING MACHINERY OPERATED ON THE CONTOUR. 2.4. GRADED AREAS WITH SLOPES GREATER THAN 3HA V BUT LESS THAN 2HI:IV SHOULD BE ROUGHENED BEFORE SEEDING BY TRACKING. 2.5. TRACKING IS DONE By OPERATING EQUIPMENT UP AND DOWN THE SLOPE TO LEAVE HORIZONTAL DEPRESSIONS IN THE SOIL_ 3- MAINTENANCE STANDARDS 0_1. PERICOICALLY CHECK ROUGHENED, SEEDED, PLANTED AND MULCHED SLOPES FOR RILLS AND GULLIES, PARTICULARLY AFTER A SIGNIFICANT STORM EVENT. FILL THESE AREAS SUGHTLY ABOVE THE ORIGINAL GRADE, THEN RESEED AND MULCH AS SOON AS POSSIBLE. UNLESS OTHERWISE NOTED, DRAWING 15 NOT TO SCALE (NT% DEPARTMENT SURFACE PLAN - 213.Q0 P-R) PUBLIC WORKS SURFACE ROUGHENING PR GAS 9/28/2018 I DATE SURFACE ROUGHING 50 N TS 2" MIN OVERLAP _ f ANCHOR IN r x 5" MIN. TRENCH AND f STAPLE AT 12' INTERVALS 6' MIN. OVERLAP - -��- ~ STAPLE OVERLAPS 5' MAX SPACING "'�CF-�- 4-J,•11Tr�T�-'f'I�'i�1'�--'� E � �; BRING MATERIAL DOWN TO A LEVEL AREA, TURN THE END UNDER 4". AND STAPLE AT 12" INTERVALS 1. CONDITIONS OF USE 11. FOR PERMANENT $TABILIZATaON OF SLOPES 2H;IV OR GREATER AND WITIt MORE THAN 10 FEET OF VERTICAL RELIEF 1.2. IN CONJUNCTION WITH SEED FOR FINAL STABILIZATION OF A SLOPE, NOT MR TEMPORARY COVER. HOWEVER. THEY MAY BE USED FOR TEMPORARY APPLICATIONS AS LONG AS T11E PRODUCT LS NOT DA0.WGED BY REPEATED HANDLING- 2. DESIGN AMC INSTALLATION SPECIFICATIONS 2.1. INSTALLATION IS CRITICAL TO THE EFFECTIVENESS OF THIS PRODUCT. IF GOOD GROUND CONTACT IS NOT ACHIEVED, RUNOFF CAN CONCENTRATE UNDER THE PRODUCT, RESULTING IN SIGNIFICANT EROSION. 2.2. JUTE MATTING MUST BE USED IN CONJUNCTION WITH MULCii. EXCELSIOR, WOVEN STRAW, BLANKETS, AND CDIR (COCONUT FIBER) BLANKETS MAYBE INSTALLED WITHOUT MULCH 2.3. PURELY SYNTHETIC BLANKETS ARE ALLOWED, BUT SHALL ONLY BE USED FOR LONG-TERM STABILYZATION OF WATERWAYS. THE ORGANIC BLANKETS ARE BETTER FOR SLOPE PROTECTION AND &HART -TERM WATERWAY PROTECTION BECAUSE THEY RETAIN AND PROVIDE ORGANIC MATTER TO THE SOIL, SUBSTANTIALLY IMPROVING THE SPEED AND SUCCESS OF RE -VEGETATION. 2.4. DO NOT STRETCH BLANKETSJMATTINGS TIGHT - ALLOW THE ROLLS TO MOLD TO ANY IRREGULARITIES. 2.G. SLOPE SURFACE SHALL BE SMOOTH BEFORE PLACEMENT FOR PROPER SOIL CONTACT 2.8. STAPLING PATTER14 AS FER hWNUFAGTUREWS RECOMMENDATION, 2.7. IF THERE IS A BERM AT THE TOP OF SLOPE, ANCHOR UPSU)PE OF THE BERM. 2- 9. FOR SLOPES LESS THAN 3H:IV. ROLLS MAY BE PLACED IN HORRONTAL STRIPS, 2.8. LIME. FERTILIZE. AND SEED BEFORE INSTALLATION. PLANTING OF SHRUBS_ TREES. ETC_ SHOULD OCCUR AFTER INSTALLATION- S. MAINTENANCE STANDARDS 3.1_ GOOD CONTACT WITH THE GROUND MUST BE MAINTAINED, AND THERE MUST NOT BE EROSION BENEATH THE NET OR BLANKET. 3.2 ARENAS OF THE NET OR BLANKET THAT ARE DANfAGED OR NOT IN CLOSE CONTACT WITH THE GROUND SHALL BE REPAIRED AND STAPLE(] 3.3 IF EROSION OCCURS DUE TO POORLY CONTROLLED DRAINAGE. THE PROBLEM SHALL BE FIXED AND THE ERODED AREA PROTECTED :4S m UNLESS DTHERWIsr Ni'TF n, DRAV rINr Is NOT TII.ALE (NISI A&XI1%6 [STD. PLAN - 213.20 16 PUBLIC WORKS SLOPE INSTALLATIONS OF NETS AND PITH D; _RDDEPARTMENT BLANKETS GAZ 9/28/21018 I :45 M %17rxi, u",. �ai,DATE � SLOPE INSTALLATIONS 50 Stantec 1687 114TH Avenue SE, Suite 100 Bellevue WA 98004 phone: (425) 869-9448 www.stantec.com r 4"'MIN. 'OVERLAP ••`� •tom•• `. .�.r='_�{f'• r `•• E" MLN OVERLAP NOTES: 1. CONDITIONS OF USE 1- 1. FOR PERAANENT STABiL1ZAnON OF SLOPES 2m:1v OR GREATER AND WTTH MORE T]• M 1D FEET OF VERTICAL RELIEF_ 1.2. IN CONJUNCTION WITH SEED FOR FINAL STABILIZATION OF A SLOPE, NOT FOR TEMPORARY COVER. HCWEVER, THEY MAYBE USED FOR TEMPORARY APPLICATIONS AS LONG AS THE PRODUCT M NOT DAMAGED BY REPEATED HANDLING. 1.3. THE APPLICATION DF APPROPRIATE NETTING OR BLANKET TO DRAINAGE DITCHES AND SWALES CAN PROTECT BARE SOIL FROM C-HANNEUZED RUNOFF WHILE VEGETATION IS ESTABLISHED. NETS AND BLANKETS CAN ALSO CAPTURE A GREAT DEAL OF SEDIMENT DUE TO THEIR OPEN, POROUS STRUCTURE. SYNTHETIC NETS AND BLANKETS MAY BE USED TO PERMANENTLY STABILIZE CHANNELS AND MAY PROVIDEA COST-EFFECTIVE, ENVIRONMENTALLY PREFERABLE ALTERNATIVE TO RIPRAP. 2. DESIGN AND INSTALLATION SPECIFICATIONS 2.1 INSTALLATION IS CRITICAL TO THE EFFECTIVENESS OF THIS PRODUCT. IF GOAD GROUND CONTACT IS NOT ACHIEVED, RUNOFF CAN CONCENTRATE UNDER THE PRODUCT, RESULTING IN SIGNIFICANT EROSION 2.2 JUTE MATTING MUST BE USED IN CONJUNCTION WITH MULCH. EXCELSIOR, WOVEN STRAW BLANKETS, AND COIR (COCONUT FIBER) BLANKETS MAY BE INSTALLED WITHOUT MULCH. OTHER TYPES OF PRODUCTS WILL BE EVALUATED INDIVIDUALLY 2.3. PURELY SYNTHET KC BLANKETS ARE ALLOWED, BUT SHALL ONLY BE USED FOR LONGTERM STABILZATION OF WATERWAYS. THE ORGANIC BLANKETS ARE BETTER FOR SLOPE PROTECTION AND SH4RT•TERM WATERWAY PROTECTION. 2-4. DO NOT STRETCH 6LANKETWATTINGS 71GHT - ALLOW THE ROLLS TO MOLD TO ANY IR RE GU LAR I T6ES 2,Fi SLOPE SURFACE SHALL BE SMOOTH BEFORE PLACEMENT FOR PROPER SOIL CONTACT. 2.6. ANCHOR, STAPLE, AND INSTALL CHECK SLOTS AS PER MANUFACTURER'S RECOMMEhDAT[chN. 2.7. AVOID JOINING MATERIAL IN THE CENTER OF THE DITCH. 2.5. LIME, FERTILIZE, AND SEED BEFORE INSTALLATION. 3. MAINTENANCE STANDARDS 3.1 GOOD CONTACT WITH THE OROUND MUST BE MAINTAINED, AND THERE MUST NOT BE EROSION BENEATH THE NET OR BLANKET. 3,2_ AREAS OF THE NET OR BLANKET THAT ARE DAMAGED OR NOT INCLOSE CONTACT WITH THE GROUND SHALL BE REPAIRED AND STAPLED. 3.9 IF EROSION OCCURS DUE TO POORLY CONTROLLED DRAINAGE, THE PROBLEM SHALL BE FIXED AND THE ERODED AREA PROTECTED. UNLESS OTHERWISE NOTE D, DRAWING 15 NOT TO SCALE (NTSI A&0%6 f STD. PLAN - 213.14 +` PUBLIC WORKS WATERWAY INSTALLATIONS OF NETS I T�l -R)DEPARTMENT AND BLANKETS 9/28/2018 I �..:.._ DATE WATERWAY INSTALLATIONS N TS :45 AN 7•317'. SEE NOTE 2.3 ROLL SPACING DEPENDS ON SOIL TYPE AND SLOPE STEEPNESS SECIMENT, ORGANIC MATTER, AND NATIVE SEEDS ARE CAPTURE D BEHIND THE ROLL S STRAW ROLLS MUST BE PLACED ALONG SLOPE CONTOURS ADJACENT ROLLS SHALL TIGHTLY ABUT U' DIA_ 1. CONDITIONS OF USE 1_I_ INSTALL ON PISTU RBED AREAS THAT REOU IRE !MMEDIATE ERDSION PROTECTION. 2. USE ON SLOPES REOUIRIMG STABILIZATION UNTIL PERMANENT VEGETATION GAN 13E ESTABLISH ED, 1.3. CAN BE USED ALONG THE PERIMETER OF A PROJECT. AS A CHECK DAM IN UNLINED DITCHES AND AROUND TE7,IPOR RJ r STOCKPILES. 1.4. WATTLES CAN BE STAKED TO THE GROUND 1JSINQ WILLOW CUTTINGS FOR ADDED REVEGETATl44. 1.5. RJLL1NG CAN OCCUR BENEATH AND BETWEEN WATTLES IF NOT PROPERLY ENTRENCHED, ALLOWING WATER TO PASS BELOW AND BETWEEN WATTLES. 2. DESIGN AND INSTALLATION SPECIFICATIONS 2_1. rr IS CRITICAL THAT WATTLES ARE INSTALLED PPRPENDIGULAR TO THE FLOW DIRECTION AND PARALLEL TO THE= SLOPE CONTOUR. 2.2. NARROW TRENGHES SHOULD BE DUG ACROSS THE SLOPE, ON CONTOUR_ TO A DEPTH OF 3 TO 5 INCHES ON CLAY SOILS AND &OILS WITH GRADUALSLOPES. ON LOOSE SDLL$, STEEP SLOPES, AND DURING HGH RAINFALL EVENTS, THE TREJJEHES SHOULD HE DUG TO A DEPTH OF 5 TO 7 INCHES, OR WF2 TO ZS OF THE THICKNESS OF THE WATTLE. 2.3. START CONSTRUCTION OF TRENCHES AND INSTALLING WATTLES FROM THE BASE OF THE SLOPE MD WORK UPHILL. EXCAVATED MATERIAL SHOULD BE SPREAD EVENLY ALONG THE UPHILL SLOPE AND 00MRACTED USING HAND TAMPING OR OTHER METHOD. CONSTRUCT TRENCHES AT CONTOUR INTERVALS OF 3 TO 30 FEET APART DEPENDING ON THE STEEPNESS OF THE SLOPE, SOIL TYPE, AND RAINFALL THE STEEPER THE SLOPE THE CLOSER TOGETHER THE TRENCHES SHOULD BE CONSTRUCTED. VERTICAL DISTANCE BETWEEN WATTLES IS NOT TO EXCEED 10 FEET. 2.4. INSTALL THE WATTLES SMUGLY INTO THE TRENCHES AND ABUT TIGHTLY END TO END. DO NOT OVERLAP THE ENDS. 2.5. INSTALL STAKES AT EACH ENO OF THE WATTLE, AND AT4 FOOT CENTERS ALONG THE ENTIRE LENGTH Or THE WATTLE. 2.6. IF RE41_FIRED, MZTALL PILOT HOLES FOR THE STAKES USING A ST"(N HT BAR TO DRIVE HOLES THROUGH THE WATTLE AND INTO THE SOIL. 2.7. AT A MINIMUM, WOODEN STAKES SHOULD BE APPROXIMATELY X4 X W4 X 24 INCHE$. vWFMOW CUTTINGS OR 31S414OH RE13AR CAN AL$p BE USED FOR STAKES. 2.6. STAKES SHOULD BE DRIVEN THROUGH THE MIDDLE OF THE WATTLE, LEAVING 2 TO 3 INCHES OF THE STAKE PROTRUDING ABOVE THE WATTLE 3. MAINTENANCE STANDARDS 3.1. INSPECT WATTLES PRIOR TO FORECASTED RAIN, DAILY DURING EXTENDED RAIN EVENTS. AFTER RAIN EVENTS, WEEKLY DURING THE WET SEASON, AND Al TWO WEEK INTERVALS AT ALL OTHER TIMES OF THE YEAR. 32 P.CPAIR OR REPLACE SPLIT, TORN, RAVELING, OR SLUMPING WATTLES 3.3. REMOVE SEDIMENT AGCUMULATI DIMS WHEN EkEEOING 112 THE HEIGHT BETWEEN THE TOP OF THE WATTLE AND THE GROUND SURFACE. UNLESS OTHERWISE NOTED, DRAWING 15 NOT TO SCALAE (NISI STD. PLAN - 213.44 .Ir PUBLIC LAIC}#HISS RPR ' D; 's11 DEPARTMENT STRAW WATTLES GAZ 9/28/2018 I wi..Yain.,v.t� D0.TE STRAW WATTLES N TS S-392150 :4S AN Stantec was not present on site during construction. These record drawings are a compilation of a copy of the sealed engineering drawings for this project, as modified by information furnished by the as -built survey on the project. The information shown on the record drawings that was provided by the City Utilities Dept. inspector cannot be verified for accuracy or completeness. The original sealed drawings are on file at the offices of the City of Renton. (RECORD DRAWING APPROVED BY DATE