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Home My WebLink AboutWWP2703549.100 0 0 0 co co N co 0 m 0 c w x N N _cT C m v v ui 73 Q z W i i i i z / i i i R=25' MIN M FILTER FABRIC AS NECESSARY 4 TO 8 IN ROCK 12" DEPTH MIN 12 _► CONSTRUCTION ENTRANCE DETAIL (TYP SCALE: NTS FILE: 8235C10-C-08 INSTALL TEMPORARY GRAVEL BEFORE GRADING PHASE OF PROJECT, REMOVE PRIOR TO PAVEMENT INSTALLATION zl� NOTE: ONLY INSTALL TEMPORARY GRAVEL AROUND CATCH BASINS IN UNPAVED AREAS. USE FILTER FABRIC TO PROTECT EXISTING CATCH BASINS IN PAVED AREAS. INSTALL TEMPORARY FILTER FABRIC BETWEEN FRAME AND GRATE OF ALL CATCH BASINS AND INLETS INSIDE OR ADJACENT TO DISTURBED AREAS. 8" MIN. PLAN TEMPORARY CATCH BASIN PROTECTION SCALE: NTS FILE: 8235C10-C-08 APPROX LOCATION OF CENTURY LINK 4" PVC CONDUIT (LOOKING NORTH) 4" - 6" MOUND UNDERGROUND WARNING TAPE PER SUB -SECTION 10.15052 TRACER WIRE PER SUB -SECTION 10.15052 18" TOPSOIL STA 1+00 TO 8+60 T (EXCLUDING STREAM CROSSING) ONLY. j MATCH EXISTING GRADE. SEE I 15 SUB -SECTION 10.02900 FOR SALVAGE/ IMPORT REQUIREMENTS. BACKFILL FOR i I ALL OTHER STATIONING AS INDICATED ON THE DWGS AND AS SPECIFIED. i) 15" SS NATIVE SOIL TRENCH BACKFILL DETAIL I SCALE: NTS FILE: 8235C10-C-08 RECORD DRAWINGS THESE RECORD DRAWINGS HAVE BEEN PREPARED BASED IN PART ON INFORMATION PROVIDED BY OTHERS THIS DRAWING SET WAS PREPARED ONLY FOR THE PROJECT AND SITE SPECIFICALLY IDENTIFIED HEREON AND IS NOT TO BE USED ELSEWHERE Date By iz/6/13 r ESA —PER CITY STD PLAN 405 EXCEPT PIPE ZONE MATERIAL SHALL BE GRAVEL BACKFILL FOR PIPE ZONE BEDDING PER WSDOT SECTION 9-03.12(3). IN NO CASE SHALL PEA GRAVEL BE PERMITTED. TYP) 5309 Shilshole Ave. NW Seattle, WA 98107 P: (206) 789-9658 F: (206) 789-9684 BURIED UTILITIES IN AREA PLEASE CALL BEFORE YOU DIG 1.800.424.5555 2" ST OF 0 Lo FILTER FABRIC MATERIAL 60" WIDE Rni.LS. USE STAPLES OR WIRE GS TO ATTACH FABRIC TO WIRE 3Y 2" BY 14 GA. WIRE 3RIC OR EQUIV. FILTER FABRIC MATERIAL 4 2" BY 2" BY 14 GA. WIRE FABRIC OR EQUIV. 8" '► MIN MR CV Z N g 0 10 BURY BOTTOM OF �2" BY 4" WOOD POST FILTER MATERIAL IN 8" BY 12" TRENCH Stu i iON NOTE: FILTER FABRIC FENCES SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND AT LEAST DAILY DURING PROLONGED RAINFALL. ANY REQUIRED REPAIRS SHALL BE MADE IMMEDIATELY. K*�2 SILT FENCE DETAIL C-02 SCALE: NTS FILE: 8235C10-C-08 SACKS SHALL BE #10 JUTE BURLAP OR APPROVED ALTERNATE FILLED WITH 48 TO 55 LBS. OF PEA GRAVEL BACKFILL DR DRAINS INSTALL APPROXIMATELY 3 FEET ABOVE CHANNEL INVERT. ALIGN LOW POINT IN DAM WITH CENTER OF CHANNEL. ADD VISQUEEN THROUGH FILLED BURLAP SACK STACK PLACE SACKS FIRMLY AGAINST GROUND LINE AND ADJACENT SACKS. PLAN SECTION A FLOWLINE STREAM DEWATERING COFFERDAM DETAIL I SCALE: NTS FILE: 8235C10-C-08 INSTALL NATIVE STREAMBED MATERIAL WHERE SUITABLE OTHERWISE PROVIDE STREAMBED SEDIMENT PER WSDOT SECT DEPTH OF 12". MATCH EXIST APPROX LOCATION OF CENTURY LINK 4" PVC CONDUIT (LOOKING NORTH) TRENCH SCALE: NTS FILE: 8235C10-C-08 CLSM PEI SECTION NATIVE Si TYP UNDERGROUND WARNING TAPE PER SUB -SECTION 10.15052 TRACER WIRE PER SUB -SECTION 10.15052 BACKFILL ONLY BACKFILL AT STREAM CROSSING DETAIL J: oAda PWA#ft lf#AV% KEY NOTES: OTHE FILTER FABRIC SHALL BE PURCHASED IN A CONTINUOUS ROLL CUT TO THE LENGTH OF THE BARRIER TO AVOID USE OF JOINTS. WHEN JOINTS ARE NECESSARY, FILTER CLOTH SHALL BE SPLICED TOGETHER ONLY AT A SUPPORT POST, WITH A MINIMUM 6-INCH OVERLAP, AND BOTH ENDS SECURELY FASTENED TO THE POST. OTHE FILTER FABRIC FENCE SHALL BE INSTALLED TO FOLLOW THE CONTOURS (WHERE FEASIBLE). THE FENCE POSTS SHALL BE SPACED A MAXIMUM OF 6 FEET APART AND DRIVEN SECURELY INTO THE GROUND (MINIMUM OF 30 INCHES). OA TRENCH SHALL BE EXCAVATED, ROUGHLY 8 INCHES WIDE AND 12 INCHES DEEP, UPSLOPE AND ADJACENT TO THE WOOD POST TO ALLOW THE FILTER FABRIC TO BE BURIED. O4 WHEN STANDARD STRENGTH FILTER FABRIC IS USED, A WIRE MESH SUPPORT FENCE SHALL BE FASTENED SECURELY TO THE UPSLOPE SIDE OF THE POSTS USING HEAVY-DUTY WIRE STAPLES AT LEAST 1 INCH LONG, TIE WIRES OR HOG RINGS. THE WIRE SHALL EXTEND INTO THE TRENCH A MINIMUM OF 4 INCHES AND SHALL NOT EXTEND MORE THAN 36 INCHES ABOVE THE ORIGINAL GROUND SURFACE. O5 THE STANDARD STRENGTH FILTER FABRIC SHALL BE STAPLED OR WIRED THE FENCE, AND 20 INCHES OF THE FABRIC SHALL BE EXTENDED INTO THE TRENCH. THE FABRIC SHALL NOT EXTEND MORE THAN 36 INCHES ABOVE THE ORIGINAL GROUND SURFACE. FILTER FABRIC SHALL NOT BE STAPLED TO EXISTING TREES. OWHEN EXTRA -STRENGTH FILTER FABRIC AND CLOSER POST SPACING ARE USED, THE WIRE MESH SUPPORT FENCE MAY BE ELIMINATED. IN SUCH A CASE, THE FILTER FABRIC IS STAPLED OR WIRED DIRECTLY TO THE POSTS. O7 PROVIDE 3/4"-1.5" WASHED GRAVEL BACKFILL IN TRENCH AND ON BOTH SIDES OF FILTER FENCE FABRIC ON THE SURFACE. OINSTALL UPSTREAM SCREENED DIVERSION PUMP. PUMP SHALL, AT A MINIMUM, BE A 6 INCH GAS POWERED TRASH PUMP, SUFFICIENT TO HANDLE EXPECTED STREAM FLOWS OF 0.5 TO 3 CUBIC FEET PER SECOND INCLUDING FLEXIBLE PIPE SYSTEM. OSELECT DISCHARGE POINT DOWNSTREAM OF IMPACTED AREA TO AVOID EROSION. LINE DISCHARGE AREA WITH VISQUEEN OR EQUIVALENT TO DISSIPATE FLOW ENERGY AND PREVENT CHANNEL SCOUR. 10 INSTALL UPSTREAM COFFERDAM WITH LOW POINT ALIGNED WITH CENTER OF ACTIVE CHANNEL. COORD LOCATION WITH TEMPORARY STREAM CROSSING. 11 INSTALL DOWNSTREAM COFFERDAM BELOW IMPACTED AREA. 12 COMPLETE ALL IN WATER WORK, GRADE SITE AND INSTALL COIR LOGS AND COIR BLANKET WHILE CHANNEL IS DE -WATERED. WORK SHALL BE COMPLETED AFTER INSTALLATION OF PIPELINE AND DURING REMOVAL OF TEMPORARY STREAM CROSSING. DECOMMISSION BYPASS PUMPING SYSTEM UPON ACCEPTANCE BY OWNERS REPRESENTATIVE. 13 WHERE DEWATERING PIPE CROSSES EQUIPMENT CROSSING OR INTERFERES WITH CONSTRUCTION, BURY PIPE IN A TRENCH AND COVER WITH STEEL PLATES. 14 USE HIGH VISIBILITY FENCING TO DELINEATE IN -STREAM LIMIT OF WORK. 15 BACKFILL AS INDICATED ON PIPING PLAN AND PROFILE SHEETS. z 0 4 10 _ 14 8 i i 4 12 11 9 13 14 TY P A STREAM DEWATERING PLAN SCALE: 1" = 10'-0" FILE: 8235C00-C-100 S 0354910 yz�