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Home My WebLink AboutSWP2703440.3�f N d Cn i S 0 a S If Q cz t D N S W) X N Rry O Qrrs V CN N m 0 C Q N A a 1.4 5 CONTRACTOR ACCESS AND STAG NG AREAS CLEARING UMITS0 GRAVEL .. }SIRFACING X j ASPHALT S, C LAT D PAVEMEI' 4.,. T 15E 46 ;P 15' PE EASEMEN i -' r ` • h pCC 58 Mpp Y xk ! SET Ad NAIL �. ` -PID NO 76168r1042-- WA175 6"GEC 4 ' 47 �` SLDPE f_ S EN �_ 5E45357 2 1 1s4`' -° IE OF DAMACEn k Rcll ON ul _15 r ' aCON_ �+ uY C WAIT+ DRIAWAY . a Li 144usaI i° G? TEMPORARY w .�� s ('uITLK x� r.� +[�v �, I < 'rueg:a - d CONSTRUCTION c f- 142%jAP(E;3"a77 4 n — BRASS � (ROC EASEMENT TYP) , ' E I_w5---�. AP(Crr � 4 � R ELEvm t 74 3? 0)N--o 4) 2 5 culls Gur,'Tr 3- T Lq , fir.. HN L IF NF: u 17 END Ex? � pf p+pE � R ra -Wt J N r 3 \01PE EASEMEN �- y. � 4 1 D CLEARING b M!7S _ S ,.. . b TEMPORARY CONSTRUCTION EASEMENT A t PLAN SCALE: 1" 2,r;' O 100% SUBMITA NO. REVISION CONSTRUCTION NOTES: TESL NOTES: 1 CONTRACTOR TO INSTALL TEMPORARY CREEK BYPASS SYSTEM. BYPASS 1 ' 4 IMPLEMENTATION OF THESE ESC PLANS AND THE CONSTRUCTION, MAINTENANCE, REPLACEMENT, SYSTEM SHOWN ON THIS DRAWING IS SCHEMATIC AND CONTRACTOR SHALL AND UPGRADING OF THESE ESC FACILITIES IS THE RESPONSIBILITY OF THE CONTRACTOR UNTL ALL SUBMIT BYPASS PLAN IN ACCORDANCE WITH THE SPECIFICATIONS FOR CONSTRUCTION IS APPROVED. APPROVAL BY THE CITY. LOCATE PIPE AND COFFER DAMS TO ALLOW FOR CONSTRUCTION OF OTHER MPROVEMENTS INCLUDING HEADWALL, BOULDER 2 THE BOUNDARIES OF THE CONSTRUCTION LIMITS SHOWN ON THIS PLAN SHALL BE CLEARLY CASCADE AND CULVERT BAFFLES. UPON COMPLETION OF PROJECT, ALL FLAGGED BY THE CONTRACTOR USING YELLOW CONSTRUCTION TAPE WITH 2"X4" WOODEN STAKES MATERIAL USED FOR THE TEMPORARY BYPASS SHALL BE REMOVED FROM SPACED AT 20' MAXIMUM PRIOR TO CONSTRUCTION. ELECTRONIC FILES WILL BE PROVIDED TO THE THE SITE AND THE SITE RESTORED TO PRE -PROJECT CONOITIONS. CONTRACTOR FOR LOCATION OF THE LIMITS. DURING THE CONSTRUCTION PERIOD, NO DISTURBANCE BEYOND THE CONSTRUCTION LIMITS SHALL BE PERMITTED. THE CONSTRUCTION LIMITS SHALL BE ~2 AT A MINIMUM CREEK BYPASS SHALL BE 36'/24" DIAMETER BUTT —FUSED MAINTAINED BY THE CONTRACTOR FOR THE DURATION OF CONSTRUCTION. LARGE WOODY OEBR'S HOPE PIPE THE SECTION UPSTREAM AND OUTSIDE OF THE EXISTING MAY BE PLACED OUTSIDE THE CONSTRUCTION LIMITS. CULVERT SHALL BE 36" OIA AT MIN. 2% SLOPE MO SHALL HAVE A 3 THE ESC FACILTTIES SHOWN ON THIS PLAN MUST BE CONSTRUCTEO PRIOR TO OR IN CONJUNCT`ON MITEREO INLET. 36' PIPE SHALL TRANSITION TO 24" DIA USING SPECIALLY WITH ALL CLEARING AND GRADING SO AS TO ENSURE THAT THE TRANSPORT OF SEDIMENT TO MADE FITTING THAT MATCHES INVERTS. 24' PIPE SHALL BE SUPPORTED SURFACE WATERS, DRAINAGE SYSTEMS, AND ADJACENT PROPERTIES IS MINIMIZED WITHIN EXISTING CULVERT USING CONTRACTOR—DESIGNEO SYSTEM. BYPASS PIPE SHALL EXTEND FAR ENOUGH OOWNSTREAM TO ELIMINATE NEED FOR 4. THE ESC FACILITIES SHOWN ON THIS PLAN ARE THE MINIMUM REQUIREMENTS FOR ANTIC PATED SITE A DOWNSTREAM COFFER DAM AND SHALL EXTEND FAR ENOUGH THAT CONDITIONS, DURING THE CONSTRUCTION PERIOD, THESE ESC FACILITIES SHALL BE UPGRADED AS OUTLET ELEVATION IS A MINIMUM OF 2 VERTICAL FEET BELOW WORK AREA NEEDED FOR CONSTRUCTION SEQUENCING AND UNEXPECTED STORM AND SHALL BE ELEVATION OF INLET SHALL BE 152.5 FT. MODIFIED TO ACCOUNT FOR CHANGING SITE CONDITIONS (E.G., ADDITIONAL SUMP PUMPS, 3 PROVIDE SAND OR GRAVEL-FILLEO BAG COFFER DAM SYSTEM TO RELOCATION OF OITCHES AND SILT FENCES, ETC.). ELEVATION 156.5 FT ON UPSTREAM SIDE OF CULVERT. COFFER DAM SYSTEM TO BE CONTRACTOR -DESIGNED TO WITHSTAND ANTICIPATED 5. THE ESC FACILITIES SHALL BE INSPECTED DAILY BY THE CONTRACTOR AND MAINTAINED TO ENSURE HYDROSTATIC FORCES AND WITHSTAND OVERTOPPING. ALSO SEE GENERAL CONTINUED PROPER FUNCTIONING. WRITTEN RECORDS SHALL BE KEPT OF WEEKLY REVIEWS OF THE NOTE 1 ` ESC FACILITIES. DAMAGED OR IMPROPERLY FUNCTIONING BMPS SHALL BE REPLACED AT NO ADOITIONAL COST TO THE CITY. y CONNECT 12" TEMPORARY STORM ORAIN TO EXISTING 12" CMP AND 6 ANY AREAS OF EXPOSED SOILS THAT WILL NOT BE DISTURBED FOR TWO DAYS SHALL BE i DIRECT FLOW TO UPSTREAM SIDE OF COFFER DAM. IMMEOIATELY STABILIZED WITH THE APPROVED ESC METHODS (E.G., SEED NG, MULCH NG, PLASTIC Q INSTALL CATCH BASIN INSERTS {4} AT FIRST CB WEST AND EAST OF COVERING, ETC.). ° CULVERT. SEE DETAIL 1 ON DWG C3. 7. AT NO TIME SHALL MORE THAN ONE (1) FOOT OF SEDIMENT BE ALLOWED TO ACCUMULATE WITH N EXCAVATE SUMP AT LOW POINT WHERE FLOWS EXIT EXISTING CULVERT. A CATCH BASIN. THE CLEANING OPERATION SHALL NOT FLUSH SEDIMENT -LADEN WATER INTO THE LINE SUMP WITH PLASTIC. DIRECT ANY CONTAMINATED CONSTRUCTION DOWNSTREAM SYSTEM. WATER/SEEPAGE (E.G., AFTER SAND BLASTING OPERATIONS OR CONCRETE WORK) DISCHARGING FROM CULVERT TO SUMP AND PUMP TO HOLDING 8 WHERE STRAW MULCH FOR TEMPORARY EROSION CONTROL IS REQUIRED, " SHALL BE APPLIED AT TANK FOR HAUL TO DISPOSAL SITE UPON REMOVAL OF EXISTING DAMAGED A MINIMUM THICKNESS OF 2 TO 3 INCHES. CULVERT SECTION, RELOCATE LINED SUMP TO CAPTURE CULVERT SEEPAGE USE REINFORCED PLASTIC FABRIC TO COVER STOCKPILED ITEMS WHEN NOT IN USE. THE AT NEW OUTLET LOCATION. REINFORCED PLASTIC FABRIC SHALL BE HELD DOWN BY A MINIMUM OF 10LB SANDBAGS PLACED 7 INSTALL TEMPORARY SILT FENCE ACROSS CREEK BOTTOM AND AT TOP OF EVERY 1 D FEET ALONG THE EDGE AND ACROSS THE P LE. CHANNEL BANKS ALONG CREEK. SEE DETAIL 2 ON DWG C2. AS 10. IN ACCORDANCE WITH THE DEPARTMENT OF ECOLOGY REQUIREMENTS, WASTEWATER FROM CEMENT CONSTRUCTION PROCEEDS, RELOCATE SILT FENCE WHEN NECESSARY AND CONCRETE, MASONRY, ASPHALT CONCRETE CUTTING OR POURING OPERATIONS, PETROLEUM AS DIRECTED BY ENGINEER. PRODUCTS, HYDRAULIC FLUID, SEOIMENT-LADEN WATER, CHEMICALS, OR ANY OTHER TOXIC OR NSTALL SUMP AND PUMP SYSTEM TO COLLECT ANY LEAKAGE FROM DELETERIOUS MATERIAL SHALL NOT BE ALLOWED TO ENTER OR SEEP INTO STORM DRAINAGE COFFERDAM AND PUMP TO UPSTREAM SIDE OF COFFERDAM. SUMP TO BE SYSTEMS OR SURFACE WATERS. ANY WASTAGE OR WATER COMING IN CONTACT WITH FRESH M NIMUM OF 3 FT DEEP, WITH PERF PIPE AND BACKF1LLE0 WITH WASHED CONCRETE SHALL BE COLLECTED IN AN IMPERVIOUS SUMP FOR COMPLETE REMOVAL AND DISPOSAL ROCK. TO PREVENT CONTAMINANTS FROM ENTERING GROUND OR SURFACE WATERS. CONTRACTOR MAY USE EXISTING PAVED AREAS WITHIN EASEMENT FOR 11. CONTRACTOR SHALL COMPLY WITH ALL APPROVED LOCAL, STATE AND FEOERA: REQUIREMENTS FOR ACCESS AND STAGING. ANY ADDITIONAL STAGING AREA NEEDED SHALL BE PROTECTION OF WATER QUALITY. SEE PROJECT SPECIFICATIONS FOR COPIES OF PROJECT PERMITS. • CONTRACTOR OBTAINED. A COPY OF THE APPROVED HYORAUUC PROJECT APPROVAL (HPA) SHALL BE KEPT IN A VISIBLE r LOCATION. ALL WORK BELOW THE ORDINARY HIGH WATER LINE (OHWL) SHALT. BE BETWEEN JI NE 1 D CLEARING LIMITS TO CULVERT INLET IS FOR TEMPORARY ACCESS AND 15, 2008 AND OCTOBER 15, 2008. INSTALLATION OF TESC FEATURES. NOTE AN EXISTING CMP HALF -PIPE IN THIS AREA WILL NEED TO BE RESTORED IF DISTURBED. 12. CONTRACTOR SHALL CAPTURE AND SAFELY REMOVE AND RELOCATE FISH WITHIN THE TEMPORARY DIVERSION AREA IN ACCORDANCE WITH THE HPA REQUIREMENTS. PRIOR TO INSTALLING TEMPORARY 11 A LARGE CLEARING LIMITS AREA IS PROVIDED IN THIS AREA TO PROVIDE BYPASS, CONTRACTOR SHALL OBTAIN A WASHINGTON DEPARTMENT OF FISH AND WILDLIFE (WDFW) CONTRACTOR FLEXIBILITY IN SE! ECTING MAIN POINT OF ACCESS TO WORK SCIENTIFIC COLLECTING PERM? PER SPEC SECTION 1-07.6 AND INSTALL FISH BLOCK NETTS ANO AREA. ONCE MAIN POINT OF ACCESS IS SELECTED, CONTRACTOR TO HAND NET FISH FROM WORK AREA PER PERMIT REQUIREMENTS. CONTRACTOR SHALL HAVE A REDUCE CLEARING LIMITS TO EXTENT PRACTICAL. QUALIFIED BIOLOGIST CAPTjRE AND SAFELY MOVE FOOD FISH, GAME FISH, AND OTHER FISH LIFE FROM THE JOB SITE CONTRACTOR SHALL HAVE FISH CAPTURE AND TRANSPORTATION EQUIPMENT GENERAL NOTES: ON THE OER SITE. CAPTURED FISH IMMEDIATELY AND SAFELY TRANSFERRED THESHALL TO�FR E�� LOWING WATDWWNSTREAM OF PROJECT s 1. BYPASS SYSTEM IS SIZED TO PASS MODERATE TO HEAVY FALL STORMS BASED ON 2 YEARS OF GAGED FLOW. CONTRACTOR SHALL MAINTAIN SUFFICIENT MATERIALS ON SITE TO RAISE HEIGHT OF COFFER DAM 1.5 FT N CASE OF LARGE STORM EVENT. �J�IG mmoku AS SHOWN ,� ' �'0:: C( T 3u OF RENTON rAL W" .. - Planning/Building/Public Works Dept. iOff OKOM swu Accerdomy 20 C 1 "-2D'-Ow Scale CARR ROAD - PANTHER CREEK EMERGENCY CULVERT REPAIR PROJECT TEMPORARY EROSION AND SEDIMENT CONTROL 31414 40 Feet wx 8/19/08 r, �3 8 m m C) �o �d 1 IIy V my oyz y _-A b Y W ox