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HomeMy WebLinkAboutR-391007O T M) L"J 6 I W I- 1 ` 0 W W 'r V ) JOINTS IN FILTER FABRIC SHALL BE SPLICED AT POSTS. LOSE STAPLES. YAW RIGS, OR EOIINAL. ENT TO ATTACH FABRIC TO POSTS B' MAX U POST SPACING MAY BE INCREASED TO S' IF WIRE BACIONG IS USED 2'I47 BY 14 GB. WIRE OR EQUIVALENT. IF STANDARD STRENGTH FABRIC USED FILTER FABRIC MINIMUM 4Y4' TRENCH BACKFil TRENCH WITH NATIVE SOIL ZW WOOD POSTS. STEEL FENCE / POSTS. R33AR. OR EQUIVALENT i rr 1. CONDIflON OF USE I.I. SR_T FENCE MAY BE USED DOWNSLOPE OF ALL DISTURBED AREAS. 1.Z. SILT FENCE IS NOT INTENDED TO TREAT CONCENTRATED FLOWS, NOR IS INTENDED TO TREAT SUBSTANTIAL AMOUNTS OF OVERLAND FLOW. ANY CONCENTRATED FLOW MOST BE CONVEYED THROUGH THE DRAINAGE SYSTEM TO A SEDIMENT TRAP OR POND. 9 9 f / INSTALL DRIVEWAY CULVERT IF THERE IS A ROADSIDE DITCH PRESENT, AS PER CITY ROAD STANDARDS 4'F QUARRY SPALLS GLDIDRR.E VOW DRIVEWAYS SHALL BE PAVED TO THE EDGE OFRO-W PRIOR TO INSTALLATION OF THE CONSTRUCTION ENTRANCE TO AVOID DAMAGING OF THE ROADWAY IT IS RECOMMENDED THAT THE \ ENTRANCE BE CROWNED SO THAT RUNOFF DRAINS OFF THE PAD IrMIN. THICIWESS \' �� PROVIDE FLU.MIWTHOF MOTES `\ NGRE83tEG`RESSAREA 1. CONDITION OF USE 1.1. CONSTRUCTION ENTRANCE SHALL BE STABILIZED WHEREVER TRAFFIC WILL BE LEAVING A CONSTRUCTION SITE AND TRAVELING ON PAVED ROADS OR OTHER PAVED AREAS WITHIN 1,DD0 FEET OF THE SITE. GRAB TENSILE STREBNGTH(ASTMD4751) ZOO PSI MIN. GRAB TENSILE ELONGATION (ASTM D4632) 30% MAX. MULLEN BURST STRENGTH ASTM D3786-SO4 400 PSI MIN. ADS (ASTM D47S1) 20-45(U.S. STANDARD SIEVE SIZE) 2 DESIGN AND MSTALLATION SPECWICATf0N8 X DESIGN AND INSTALLATION SPECIFICATIONS Z.1. THE GEOTEX ILE USED MOST MET THE STANDARD LISTED BELLOW. A COPY OF THE MANUFACTURER'S FABRIC SPECIFICATIONS MOST BE 2.1. HOG FUEL (WOOD BASED MULCH) MAY BE SUBSTITUTED FOR OR COMBINED WITH QUARRY SPALLS IN ARES THAT WILL BOT BE USED AVAILABLE ON SITE, FOR PERMANENT ROADS HOG FUEL IS NOT RECOMMENDED FOR ENTRANCE STABILIZATION IN URBAN AREAS THE INSPECTOR MAY 30-I0051EVISIIE (0.60-O.15MM)FORSILTFILM AOSIASTM D4751) 50-]0051 EVE512E(0.30-0.SSMM) FOR OTHER FABRICS WATER PERMITTNITY (ASTM D491) 0.02SEC�-11VINIMUM 180 LBS. W N. FOR D(TRA STIEN GH FABRIC GRAB TENSILE STRH/CHT(ASTM D4fi32) 100 LBS. MI N. FOR STAN DARD STRENGHT FA BMC GRAB TENSILE ELONGATION JASTM D4632) 30%MAX ULTRAVIOLATE RESISTANCE(ASTM D435 70%MIN. AT ANY THE REQUIRE THE USE OF QUARRY SPALLS E THE HOG FUEL IS NOT PREVENTING SEDIMENT FROM BEING TRACKED ONTO PAVEMENT OR IF THE HOG FUEL IS BEING CARRIED ONTO PAVEMENT. 22. FENCING SHALL BE INSTALLED AS NECESSARY TO RESTRICT TRAFFIC TO THE CONSTRUCTION ENTRANCE. 2.3. WHENEVER POSSIBLE, THE ENTRANCE SHALL BE CONSTRUCTED ON A FIRM, COMPACTED SUBGRADE. THIS CAN SUBSTANTIALLY INCREASE THE EFFECTIVENESS OF THE PAD AND REDUCE THE NEED FOR MAINTENANCE. 3 MAINTENANCE STANDARDS Z.Z. STANDARD STRENGTH FABRIC REQUIRES WIRE BACKING TO INCREASE THE STRENGTH OF THE FENCE WIRE BACKING OR CLOSER POST 3.1. QUARRY SPALLS SHALL BE ADDED E THE PAD IS NO LONGER IN ACCORDANCE WITH THE SPECIFICATIONS. SPACING MAY BE REQUIRED FOR EXTRA STRENGTH FABRIC IF FIELD PERFORMANCE WARRANTS A STRONGER FENCE. 3.2. IF THE ENTRANCE IS NOT PREVENTING SEDIMENT BEING TRACKED ONTO PAVEMENT, THEN ALTERNATIVE MEASURES TO KEEP THE Z.3. WHERE THE FENCE IS INSTALLED, THE SLOPE SHALL NOT KE STEEPER THAN 2HAV STREETS FREE OF SEDIMENT SHALL BE USED. THIS MAY INCLUDE STREET SWEEPING, AN INCREASE IN THE DIMENSIONS OF THE 2A. IF A TYPICAL SILT FENCE IS USED, THE STANDARD 4X4 TRENCH MAY NOT BE REDUCED AS LONG AS THE BOTTOM B INCHES OF THE SILT FENCE ENTRANCE, OR THE INSTALLATION OF THE WHEEL WASH. IF WASHING IS USED, IT SHALL BE DONE ON AN AREA COVERED WITH IS WELL BURIED AND SECURE IN A TRENCH THAT STABILIZES THE FENCE AND DOES NOT ALLOW WATER TO BYPASS OR UNDERMINE THE SILT GUSHED ROCK, AND WASHED WATER SHALL DRAIN TO A SEDIMENT TRAP OR POND- FENCE- 3.3. ANY SEDIMENT THAT IS TRACKED ONTO PAVEMENT SHALL BE REMOVED IMMEDIATELY BY SWEEPING. THE SEDIMENT COLLECTED BY SWEEPING SHALL BE REMOVED OR STABILIZED ON SITE. THE PAVEMENT SHALL NOT BE CLEANED BY WASHING DOWN THE STREET, 3 NAINIIENAINCE STANDARDS EXCEPT WHEN SWEEPING IS INEFFECTIVE AND THERE IS A THREAT TO PUBLIC SAFETY- IF IT NECESSARY TO WASH THE STREETS, A 3.1. ANY DAMAGE SHALL BE REPAIR IMMEDIATELY. SMALL SUMP MUST BE CONDUCTED. THE SEDIMENT WOULD THEN BE WASHED INTO THE SUMP WHERE IT CAN BE CONTROLLED AND 3.2. IF CONCENTRATED FLOES ARE EVIDENT UPHILL OD THE FENCE, THEY MUST BE INTERCEPTED AND CONVEYED TO A SEDIMENT TRAP OR POND. DISCHARGED APPROPRIATELY. 3.3. IT IS IMPORTANT TO CHECK THE UPHILL SIDE OF THE FENCE FOR SIGNS OF THE FENCE CLOGGING AND ACTING AS A BARRIER TO FLOW AND 3.4. ANY QUARRY SPALLS THAT ARE LOOSENED FROM THE PAD AND END UP ON THE ROADWAY SHALL BE REMOVED IMMEDIATELY. THEN CAUSING CHANNELIZATION OF FLOWS PARALLEL TO THE FENCE- IF THIS OCCURS, REPLACE THE FENCE OR REMOVED THE TRAP 3.5. IF VEHICLES ARE ENTERING OR EXITING THE SITES AT POINTS OTHER THAN THE CONSTRUCTION ENTRANCE(S). FENCING SHALL BE SEDIMENT. INSTALLED TO CONTROL TRAFFIC. 3-4, SEDIMENT MOST BE REMOVED WHEN SEDIMENT IS B INCHES HIGH. 3-5. IF THE FILTER FABRIC (GEOTEXTILE) HAS DETERIORATED DUE TO ULTRAVIOLET BREAKDOWN, IT SHALL BE REPLACED. PUBLIC WORKS SILT FENCE STD• PLAN - 214.00 DEPARTMENT MARCH 2O08 EROSION CONTROL NOTES 1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRECONSTRUCTION MEETING MUST BE HELD WITH THE CITY OF RENTON, PUBLIC WORKS DESIGN ENGINEER. 2. ALL LIMITS OF CLEARING AND AREAS OF VEGETATION PRESERVATION AS PRESCRIBED ON THE PLAN(S) SHALL BE CLEARLY FLAGGED IN THE FIELD AND OBSERVED DURING CONSTRUCTION. 3. ALL REQUIRED SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN OPERATION PRIOR TO LAND CLEARING AND/OR CONSTRUCTION TO ENSURE THAT SEDIMENT LADEN WATER DOES NOT ENTER THE NATURAL DRAINAGE SYSTEM. ALL EROSION AND SEDIMENT FACILITIES SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME THAT CLEARING AND/OR CONSTRUCTION IS COMPLETE AND POTENTIAL FOR ON -SITE EROSION HAS PASSED. THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT AND ADDITIONS TO EROSION/SEDIMENTATION CONTROL SYSTEMS SHALL BE THE RESPONSIBILITY OF THE PERMITEE. 4. THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING ARE INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE PERMITEE SHALL ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL FACILITIES WILL BE NECESSARY TO ENSURE COMPLETE SILTATION CONTROL ON THE PROPOSED SITE. DURING THE COURSE OF CONSTRUCTION, IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF THE PERMITEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY THE ACTIVITIES AND TO PROVIDE ADDITIONAL FACILITIES, OVER AND ABOVE MINIMUM REQUIREMENTS, AS MAY BE NEEDED, TO PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE RECEIVING DRAINAGE SYSTEM. 5. APPROVAL OF THIS PLAN IS FOR EROSION/SEDIMENTATION CONTROL ONLY. IT DOES NOT CONSTITUTE AN APPROVAL OF STORM DRAINAGE DESIGN, SIZE NOR LOCATION OF PIPES, RESTRICTORS, CHANNELS, OR RETENTION FACILITIES. 6. DURING THE TIME PERIOD OF OCTOBER 1ST THROUGH APRIL 30TH, ALL PROJECT DISTRIBUTED SOIL AREAS GREATER THAN 5,000 SQUARE FEET, THAT ARE TO BE LEFT UN -WORKED FOR MORE THAN 12 HOURS, SHALL BE COVERED BY MULCH, SODDING OR PLASTIC COVERING. 7. IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE NO FURTHER WORK IS ANTICIPATED FOR A PERIOD 30 DAYS OR MORE, ALL DISTURBED AREAS MUST BE IMMEDIATELY STABILIZED WITH MULCHING, GRASS PLANTING OR OTHER APPROVED EROSION CONTROL TREATMENT APPLICABLE TO THE TIME OF YEAR. GRASS SEEDING ALONE WILL BE ACCEPTABLE ONLY DURING THE MONTHS OF APRIL THROUGH SEPTEMBER, INCLUSIVE. SEEDING MAY PROCEED, HOWEVER, WHENEVER IT IS IN THE INTEREST OF THE PERMITEE, BUT MUST BE AUGMENTED WITH MULCHING, NETTING OR OTHER TREATMENT APPROVED BY THE CITY OF RENTON, OUTSIDE THE SPECIFIED TIME PERIOD. 8. FOR ALL EROSION/SEDIMENTATION CONTROL PONDS WHERE THE DEAD STORAGE DEPTH EXCEEDS 6 INCHES, A FENCE IS REQUIRED WITH A MINIMUM HEIGHT OF THREE (3) FEET, 3:1 SIDE SLOPES. 9. A TEMPORARY GRAVEL CONSTRUCTION ENTRANCE, 24 FEET X 50 FEET X 8 INCHES OF 4 TO 6 INCH QUARRY SPALLS SHALL BE LOCATED AT ALL POINTS OF VEHICULAR INGRESS AND EGRESS TO THE CONSTRUCTION SITE. F,9N M ' N00 Ir o H = PUBLIC WORKS DEPARTMENT 2 MN. STABILIZED CONSTRUCTION ENTRANCE SWALE SPACING DEPENDS ON SLOPE GRADIENT 2:1 MAX. SLOPE STD. PLAN - 215.10 MARCH 2O08 NOTES 1. CONDITION OF USE 1.1. REQUIRED AT: I.I.I. THE TOP OF ALL SLOPES IN EXCESS OF 3H:1 V AND WITH MORE THAN 20 FEET OF VERTICAL RELIEF. 1.12. AT INTERVALS ON ANY SLOPES THAT EXCEEDS THE DIMENSIONS SPECIFIED BELLOW. AVERAGE SLOPE SLOPEPERCENT FLOW PATH LENGTH 20HAV 3-5% 300FEET 10TO20 HAV 5-10% 200FEET (4T010)H:1V 10-25% 10OFEET (2TO4)H:1V 25-50% 50FEET 2. DESIGN AND INSTALLATION SMCIFICATMNS 2.1. FOR SLOPES STEEPER THAN 2H:1 V WITH MORE THAN 10 FEET OF VERTICAL RELIEF, BENCHES MAYBE CONSTRUCTED OR CLOSER SPACED INTERCEPTOR SWALES MAY BE USED. THE DESIRE MEASURE MOST BE DESIGNED BY AN ENGINEER TO EFFECTIVELY INTERCEPT THE HIGH VELOCITY RUNOFF TO A SEDIMENT POND OR TRAP. 22. CONSTRUCTION TRAFFIC OVER TEMPORARY SWALES SHALL BE MINIMIZED. 3. MAINTENANCE STANDARDS 3.1. DAMAGE RESULTING FROM RUNOFF OR CONSTRUCTION ACTIVITY SHALL BE REPAIRED IMMEDIATELY. 3.2_ IF THE FACILITY DO NOT REGULARLY RETAIN STORM RUNOFF, THE CAPACITY AND/OR FREQUENCY OF THE SWALES SHALL BE INCREASED. TB/ES�TIED W= POIW WIDTFI6 WIRE -BACKED SILT FENCE. STAKED HAYBALES WRAPPED WITH FILTER FABRIC. OR EQUIVALENT DIVIDER SILT FENCE OR EQUIVALENT DIVIDER RISER PPE (PRINCIPAL SPILLWAY) OPEN AT TOP WITH TRASH RACK DEWATERNG DEVICE (SEE RISM DETAIL) ERNG a I �, ORIFICE -, , RFIC III= coNcT> BASE EME GENCYOOVERFLOW SPILLWAY PIPE LEVEL DISCH�UiALETFOR CREST OF EI ERGBK,Y SPILLWAY V MN. WIDTH \ I'MIN, EMBANKMENT COMPACTED 9M 1, _ _-_ _ - PERVIOUS MATERIALS SUCH AS GRAVEL OR CLEAN SAND SHALL - - NOT BE USED. �, ----- ___- -e' - -___= L t DLSCHARGE TO STABILIZED CONVEYANCE, OUTIETOR LEVEL SPREADER NOTES 1. COMMON OF USE 1.1. A SEDIMENT POND SHALL BE USED WHERE THE CONTRIBUTING DRAINAGE AREA IS 3 ACRES OR MORE. 2. DESIGN AND INSTALLATION SPECIFICATIONS 2-1. THE POND SHALL BE DIVIDED INTO TWO ROUGHLY EQUAL VOLUME CELLS BY A PERMEABLE DIVIDER THAT WILL REDUCE TURBULENCE WHILE ALLOWING MOVEMENT OF WATER BETWEEN CELLS. THE DIVIDER SHALL BE AT LEAST ONE HALF OF THE HEIGHT OF THE RISER. WIRE - BACKE 2-TO 3 FOOT HIGH, EXTRA STRENGTH FILTER FABRIC SUPPORTED BY TREATED 4'X4'8 MAY BE USED AS A DIVIDER ALTERNATIVELY, STAKED STRAW BALES WRAPPED WITH FILTER FABRIC MAY BE USED. 2.2. IF THE POND IS MORE THAN B FEET DEEP, A DIFFERENT MECHANISM MUST BE PROPOSED. 2-3- TO AID IN DETERMINING SEDIMENT DEPTH, ONE -FOOT INTERVALS SHUT BE PROMINENTLY MARKED ON THE RLSFR 3 MAINTENANCE STANDARDS 3.1. SEDIMENT SHALL BE REMOVED FROM THE POND WHEN IT REACHES 1 FOOT IN DEPTH. 3.2. ANY DAMAGES TO THE POND EMBANKMENTS OR SLOPES SHALL BE REPLACED. ®� PUBLIC WORKS DEPARTMENT 9 9 STANDARD STRENGTH FILTER FABRIC IIIII IIIII CATCH BASIN 1. CONDITION OF USE I.I. SHALL BE PROVIDED FOR ALL STORM DRAIN INLETS DOWNSLOPE AND WITHIN 500 FEET OF A DISTURBED OR CONSTRUCTION AREA, UNLESS THE RUNOFF THAT ENTERS THE CATCHBASN WILL BE CONVEYED TO A SEDIMENT POND ORTRAP. 12- MAY BE USED ANYWHERE AT THE APPLICANTS DISCRETION TO PROTECT MANAGE SYSTEM. 1.1 THE CONTRIBUTING DRAINAGE AREA MOST NOT BE LARGER THAN 1 ACRE. 2. DESIGN AND INSTALLATION SPECIFICATIONS 2.1. FILTER FABRIC IS ONLY ALLOWED WERE PONDING WILL NOT BE A TRAFFIC CONCERN AND WHERE SLOPE EROSION WILL NOT RESULT E THE CURB IS OVERTOPPED BY PONDED WATER 2.2. THE PLACEMENT OF A FILTER FABRIC UNDER GRATES IS GENERALLY PROHIBITED AND THE USE OF FILTER FABRIC OVER GRATES ISSTRICiLY LIMITED AND DISCOURAGED. 3. MAINTENANCE STANDARDS 3.1. ANY ACCUMULATED SEDIMENT ON OR AROUND INLET PROTECTION SHALL BE REMOVED IMMEDIATELY. SEDIMENT SHALL NOT BE REMOVED WITH WATER AND ALL SEDIMENT MUST BE DISPOSED OF AS FILL ON SITE OR HAULED OFF SITE. SEDIMENT POND PLAN VIEW SM. PLAN - 216.00 4 PUBLIC WORKS FILTER FABRIC PROTECTION AND CROSS SECTIONS MARCH 2008 DEPARTMENT N'T CONSTRUCTION SEQUENCE: BOTTOM AND SIDES OF THE DITCH S' �MN. 2C MIN. 2:1 SLOPES eas 4b, Co L = THE DISTANCE SUCH THAT POINTS A AND B ARE OF EQUAL ELEVATION -"'-� =1 I I-1 I I- 0 2'i•ROCK MOTES 1. CONDITION OF USE 1.1. WERE CONCENTRATED RUNOFF FROM DISTURBED AREAS TO AND FROM PONDS OR TRAPS. 1.2. TO CONVEY RUNOFF INTERCEPTED FROM UNDISTURBED AREAS AROUND THE SITE TO A NONEROSNE DISCHARGE POINT. 2. MAINTENANCE STANDARDS 2-1. ANY SEDIMENT DEPOSITION OF MORE THAN 0.5 FEET SHALL BE REMOVED SO THAT THE CHANNEL IS RESTORED TO ITS ORIGINAL DESIGN CAPACITY. 22. THE CHECK DAMS SHALL BE EXAMINED FOR SIGNS OF SCOURING AND EROSION OF THE BED AND BANKS. IF SCOURING AND EROSION HAS OCCURRED. AFFECTED AREAS SHALL BE PROTECTED BY RIPRAP OR AN EROSION CONTROL BLANKET. STD. PLAN - 217.10 SM. PLAN - 217.40 PUBLIC WORKS INTERCEPTOR SWALE PUBLIC WORKS CHECK DAMS SPACING AND DEPARTMENT DEPARTMENT CROSS SECTIONS MARCH 2O08 MARCH 2O08 REVISION IIORQONIX NAD 1OS3 1Y81 DATUM SM. PLAN - 21620 MARCH 2O08 1. PRE-CONSTRUC110N MEETING. 2. POST SIGN WITH NAME AND PHONE NUMBER OF ESC SUPERVISOR (MAY BE CONSOLIDATED WITH THE REQUIRED NOTICE OF CONSTRUCTION SIGN). 3. FLAG OR FENCE CLEARING LIMITS. 4. INSTALL CATCH BASIN PROTECTION IF REQUIRED. 5. GRADE AND INSTALL CONSTRUCTION ENTRANCE(S). 6. INSTALL PERIMETER PROTECTION (SILT FENCE, BRUSH BARRIER, ETC.). 7. CONSTRUCT SEDIMENT PONDS AND TRAPS. 8. GRADE AND STABILIZE CONSTRUCTION ROADS. 9. CONSTRUCT SURFACE WATER CONTROLS (INTERCEPTOR DIKES, PIPE SLOPE DRAINS, ETC.) SIMULTANEOUSLY WITH CLEARING AND GRADING FOR PROJECT DEVELOPMENT. 10. MAINTAIN EROSION CONTROL MEASURES IN ACCORDANCE WITH APPENDIX D OF THE SURFACE WATER DESIGN MANUAL AND MANUFACTURER'S RECOMMENDATIONS. 11. RELOCATE EROSION CONTROL MEASURES OR INSTALL NEW MEASURES SO THAT AS SITE CONDITIONS CHANGE THE EROSION AND -SEDIMENT CONTROL IS ALWAYS IN ACCORDANCE WITH THE CITYS EROSION AND SEDIMENT CONTROL STANDARDS. 12. COVER ALL AREAS THAT WILL BE UNWORKED FOR MORE THAN SEVEN DAYS DURING THE DRY SEASON OR TWO DAYS DURING THE WET SEASON WITH STRAW, WOOD FIBER MULCH, COMPOST, PLASTIC SHEETING OR EQUIVALENT. 13. STABILIZE ALL AREAS THAT REACH FINAL GRADE WITHIN SEVEN DAYS. 14. SEED OR SOD ANY AREAS TO REMAIN UNWORKED FOR MORE THAN 30 DAYS. 15. UPON COMPLETION OF THE PROJECT, ALL DISTURBED AREAS MUST BE STABILIZED AND BMPS REMOVED IF APPROPRIATE. CITY OF RENTON Planning/Building/Public Works Dept. R-391007 Iw IN COMPLIANCE WITH CITY OF RENTON STANDARDS 2 O 17 LSURFACE WATER UTILITY DEVELOPMENT ENGINEERING Z aka 10/16/2017 rnair 10/17/2017 0 W U Q age GRANT PLACE TOWNHOMES 2016-12-2 -L CL FNLDBODK PAGE I- -cm III z MPORARY EROSION AND SEDIMENT CONTROL NOTES AND DETAILS < C07 OP. 22 (�