The URL can be used to link to this page

Home My WebLink AboutR-40180800 T C) 1 O I l� W I- Li.l Iq 4, MIN 1• pEPTH r• S" R6]ff7F( 3 sa P' SETRINU DEPTH IF 1,5' SEDIMENT STORAGE { -� _ - --- V DEPTH _V4'- 1-17r WASHED GRAVEL NOTE: MAY BE CONSTPUGTED BY EXCAVATION OR BY BUILDING A BERM 1'OVERFLOW DEPTH OUTFLOW CHANNEL IF CO,NSTR1LJCTE0 BY EXCAVATION. - FLTERFABRiO `ENCENG +� PUBLIC WORKS SEDIMENT TRAM STD. PLAN - 211.00 DEPARTMENT -p !vMAHCH 2GOB POLYETHYLENE CAP PERFORATED POLYETHYLENE O"RAGE TLFBING, DIAMETER MIN. 2' LARGER THAR - DEWATERING ORIFICE TUBING SHALE COMPLY WITH ASTM F667 AND AASHTO M294. ""161 PROVIDE ADEWATE CORRUGATED METAL RISER WATERTIGHT DEW ATE RING ORIFICE, SCHEDULE COUPUNG TACK WELD - 80 STEEL STUB MIN - DIAMETER AS PER CALCt1LATICNS !` IT' MIN. _ .• Mlo-1 AL7ERNSTi VELY, METAL STAKES - AND WIRE WAY BE USED TO CONCRETE gAPREVENT FL.0TATION EA PISER ILIA N.N , Cat Y STD, PLAN - 216.10 + • + PLTBIR' WORKS SEDIMENT POND �, , DEPAf�' MLINT RISER DETAIL - :4�iAI�CI-i C}DB NOTES 1. CONDMON QF USE 1.1, IPLASTC COVERING MAY BE USED ON DISTURBED AREAS THAT REQUIRED COVER MEASURES FOR LESS THAN 30 DAYS. 1.2, PLASTC IS PARTICULARLY USEFUL FOR PROTECTING CUT AND FILL SLOPES AND STOCKPILES. 1,5. CLEAR PLASTIC SHEETING MAY OF USEO OVER NFWLYS3iFE0F1) AREAS TO GREATS A GREENHOUSE EFPEGT ANP FNCOVRACE LIRAS$ GROW ri1. CLEAR PLASTEC SHOULD NOT BE USED FOR THIS PURPOSE DURING THE SUMMER MONTHS 1.4. THIS METHOD SHALL NOT BE USED UPSLOPE OF AREAS THAT MIGHT BE ADVERSELY IMPACTED BY RUNOFF. SUCH AREAS INCLUDE STEEPW UNSTABLE SLOPEES 2. DESIGN AND INSTALLATION SPECIFICAMNS R.1. PLASTIC SHEETING SHOULD HAVE A MINIMUM THICKNESS OF U.03 MILLIMETERS. 2.2. IF EROSION AT THE TOE OF A SLOPE 15 LIKELY, A GRAVEL BERM, RIPRAP, OR OTHER SUITABLE PROTECTION SliALL BE INSTALLED AT THE TOE OF THE SLOPE IN ORDER TO REDUCE THE VELOCITY OF RUNOFF. 3- MAINTENANrE $TANDARQ6 311. TORN SHEETS MOST BE REPLACED AND OPEN BEAMS REPAIRE0- 3.2. IF THE PLASTIC BEGINS TO DETERIORATE DIE TO ULTRAVIOLET RADIATION. IT MOST BE COMPLETELY REMOVED AND REPLACED. 3.3. WHEN THE PLASTIC ES NO LONGER NEEDED, IT SHALL BE COMPLETELY REMOVES. ~ PUBLIC WORKS +I` DEPkRTMLNT PLASTIC COVERING STD. PLAN - 213.30 MARC14 25DS .FOI NTB IN FILTER FABRIC SHALL BE SPLICED AT POSTS. USE STAPLES, WIRE RINGS, OR E04JIVALENT TO ATTACH FABRIC TO POSTS, 25.2' BY 14 Ga- NARE -OR ESUNALENT. IF STANDARD STRENGTH FABFUC USED FILTER FABFBG 1 1-I I H I I -I j �LII71111-f ? L . LLlf tl l_-2M I-1 L ■ > �1 �I VMAX --' MINIMLIM A'" TRENCH .. BACKFiLL TRENCH WITH 41 POST SPACING MAY EIE INCREASED NATIVE SOIL TO B' IF WIRE BACKING IS USED rx4' WOOD PCSTS. STEEL. FENCE POSTS, REBAR. OR EQUIVALENT NOTES 1, CONDITION OF USE 1.1. SILT FENCE MAY BE USED DOWN SLOPE OF ALL DISTURBED AREAS. 1.2. SLT FENCE 1S NOT INTENDED TO TREAT CONCENTRATED FLOWS, NOR IS INTENDED TO TREAT SUBSTANTIAL AMOUNTS 4F OVERLAND FL4: ANY CONCENTRATED FLOW MOST BE CONVEYED THROUGH THE DRAINAGE SYSTEM TO A SEC WENT TRAP OR POND- 2. DESIGN AND INSTALLATION SPECIFICATIONS 2 1. THE GEOTEXTILE USED MOST MET THE STANDARD LISTEQ BELLOW. A COPY OF THE MANUFACTURER'S FABRIC SPECIFICATIONS MOST BE AVAILABLE ON SITE 30-IDO-91 ESIZE(OFD .MMM FO_2 TFIiM A¢SIASTM�17S1I SV 111q 5:EyE S¢e a�.LS cCa4THER FABRI[S WATERRERMITTIV17Y rAST1V0491j 0.02SEC"-1MINIMUM {apA9 T#N51 LE STp#NCxi Ip5THA 1 321 ISO LE. MIN, FOR EKW STRENWI FABRIC 1001.6S. MIN. FOR STANDART? STRENG14T FASAIC GRABTE145ILE ELONGATION IAiTM0404 30%MAX. ULTRAWOLATERESiSTANCE LASTAhM55 70%MIH. 2.2. STANDARD STRENGTH FABRIC REOL)IRES WiRE BACKING TO INCREASE THE STRENGTH OF THE FENCE. WIRE HACKING OR CLOSER POST SPACING MAY BE REQUIRED FOR EXTRA STRENGTH FABRIC IF FIELD PERFORMANCE WARRANTS A STRONGER FENCE. 2.3. WHERE THE FENCE IS 3NSTALLED, THE SLOPE SHALL NOT BE STEEPER THAN 2H;1V Z.A. IF A TYPICAL SILT F$"NCE IS U$irD, THE STANDARD 4X4 TRENCH MAY NOT 13E REDUCED AS LONG AS THE BOTTOM B INCHES OF THE SILT FENCE IS WELL BURIED AND SECURE IN A TRENCH THAT STABILIZES THE FENCE AND DOES NOT ALLOW WATER TO BYPASS OR UNDERMINE THE SILT FENCE. 3. MAINTENANCE STANDARDS 3.1. ANY DAMAGE SHALL BE REPAIR IMMEDIATELY. 3. 2- IF CONCENTRATED FLOES ARE EVIDENT UPHILL OD THE FENCE. THEY MUST BE INTERCEPTED AND CONVEYED TO A SEDIMENT TRAP OR POND. 3.3. IT IS IMP RTANT TO CHECit THE UPHILL SIDE OF THE FENCE FOR SIGNS OF THE FENCE CLOGGING AND ACTING AS A BARRIER TO FLOW AND THEN CAUSING CHANNELIZATION OF FLOWS PARALLEL TO THE FENCE. IF THIS OCCURS, REPLACE THE FENCE OR REMOVED THE TRAP SEDIMENT. 3A, SEDIMENT MOST BE REMOVED WHEN SEDIMENT IS 6 INCHES HIGH. 3.5. IF THE FILTER FABRIC (GEOTEXTILE) HAS DETERIORATED DUE TO ULTRAVIOLET BREAKDOWN, IT SHALL BE REPLACED. EROSION CONTROL (ESC) STANDARD PLAN NOTES 1.BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE -CONSTRUCTION MEETING SHALL BE HELD AMONG THE CITY OF RENTON, HEREBY REFERRED TO AS THE CITY, THE APPLICANT, AND THE APPLICANT'S CONTRACTOR. 2.THE APPLICANT IS RESPONSIBLE FOR OBTAINING THE WASHINGTON STATE DEPARTMENT OF ECOLOGY (ECOLOGY) CONSTRUCTION STORMWATER GENERAL PERMIT, IF IT IS REQUIRED FOR THE PROJECT. THE APPLICANT SHALL PROVIDE THE CITY COPIES OF ALL MONITORING REPORTS PROVIDED TO ECOLOGY ASSOCIATED WITH THE CONSTRUCTION STORMWATER GENERAL PERMIT. 33HE ESC PLAN SET SHALL INCLUDE AN ESC CONSTRUCTION SEQUENCE DETAILING THE ORDERED STEPS THAT SHALL BE FOLLOWED FROM THE PRE -CONSTRUCTION MEETING TO POST -PROJECT CLEANUP IN ORDER TO FULFILL PROJECT ESC REQUIREMENTS. 43HE BOUNDARIES OF THE CLEARING LIMITS, SENSITIVE AREAS AND THEIR BUFFERS, AND AREAS OF VEGETATION PRESERVATION AND TREE RETENTION, AS PRESCRIBED ON THE PLAN(S), SHALL BE CLEARLY FLAGGED BY SURVEY TAPE OR FENCING AND PROTECTED IN THE FIELD IN ACCORDANCE WITH APPENDIX D OF THE CITY OF RENTON SURFACE WATER DESIGN MANUAL (RSWDM) PRIOR TO CONSTRUCTION. DURING THE CONSTRUCTION PERIOD, NO DISTURBANCE BEYOND THE CLEARING LIMITS SHALL BE PERMITTED. THE CLEARING LIMITS SHALL BE MAINTAINED BY THE APPLICANT/ESC SUPERVISOR FOR THE DURATION OF CONSTRUCTION. 5.STABILIZED CONSTRUCTION ENTRANCES SHALL BE INSTALLED AT THE BEGINNING OF CONSTRUCTION AND MAINTAINED FOR THE DURATION OF THE PROJECT. ADDITIONAL MEASURES, SUCH AS CONSTRUCTED WHEEL WASH SYSTEMS OR WASH PADS, MAY BE REQUIRED TO ENSURE THAT ALL PAVED AREAS ARE KEPT CLEAN AND TRACK -OUT TO ROAD RIGHT OF WAY DOES NOT OCCUR FOR THE DURATION OF THE PROJECT. IF SEDIMENT IS TRACKED OFFSITE, PUBLIC ROADS SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY, OR MORE FREQUENTLY DURING WET WEATHER, AS NECESSARY TO PREVENT SEDIMENT FROM ENTERING WATERS OF THE STATE. &WASHOUT FROM CONCRETE TRUCKS SHALL BE PERFORMED OFF -SITE OR IN DESIGNATED CONCRETE WASHOUT AREAS ONLY. DO NOT WASH OUT CONCRETE TRUCKS ONTO THE GROUND, OR TO STORM DRAINS OR OPEN DITCHES. ON -SITE DUMPING OF EXCESS CONCRETE SHALL ONLY OCCUR IN DESIGNATED CONCRETE WASHOUT AREAS. TALL REQUIRED ESC BMPS SHALL BE CONSTRUCTED AND IN OPERATION PRIOR TO LAND CLEARING AND/OR CONSTRUCTION TO PREVENT TRANSPORTATION OF SEDIMENT TO SURFACE WATER, DRAINAGE SYSTEMS AND ADJACENT PROPERTIES. ALL ESC BMPS 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. ALL ESC BMPS SHALL BE REMOVED AFTER CONSTRUCTION IS COMPLETED AND THE SITE HAS BEEN STABILIZED TO ENSURE POTENTIAL FOR ON -SITE EROSION DOES NOT UU 0 R O� (now what's below. Call before you dig. NO- REVISION STD. PLAN - 214.00 PUBLIC WORKS SILT FENCE DEPARTMENT MARCH 2GOB EXIST. THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT, ENHANCEMENT, AND REMOVAL OF ESC BMPS SHALL BE THE RESPONSIBILITY OF THE APPLICANT. 8.ANY HAZARDOUS MATERIALS OR LIQUID PRODUCTS THAT HAVE THE POTENTIAL TO POLLUTE RUNOFF SHALL BE DISPOSED OF PROPERLY. 9.THE ESC BMPS 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 APPLICANT SHALL ANTICIPATE THAT MORE ESC BMPS 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 APPLICANT TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY THE ACTIVITIES AND TO PROVIDE ADDITIONAL ESC BMPS, OVER AND ABOVE MINIMUM REQUIREMENTS, AS MAY BE NEEDED, TO PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE RECEIVING DRAINAGE SYSTEM. 10.APPROVAL OF THIS PLAN IS FOR ESC ONLY. IT DOES NOT CONSTITUTE AN APPROVAL OF STORM DRAINAGE DESIGN, SIZE NOR LOCATION OF PIPES, RESTRICTORS, CHANNELS, OR STORMWATER FACILITIES. 11.ANY DEWATERING SYSTEM NECESSARY FOR THE CONSTRUCTION OF STORMWATER FACILITIES SHALL BE SUBMITTED TO THE CITY FOR REVIEW AND APPROVAL. 12.ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWAY EMBANKMENTS, THAT WILL NOT BE DISTURBED FOR TWO DAYS DURING THE WET SEASON (OCTOBER 1ST THROUGH APRIL 30TH) OR SEVEN DAYS DURING THE DRY SEASON (MAY 1ST THROUGH SEPTEMBER 30TH) SHALL BE IMMEDIATELY STABILIZED WITH THE APPROVED ESC COVER METHODS (E.G., SEEDING, MULCHING, PLASTIC COVERING, ETC.) IN CONFORMANCE WITH APPENDIX D OF THE RSWDM. 13.WET SEASON ESC REQUIREMENTS APPLY TO ALL CONSTRUCTION SITES BETWEEN OCTOBER 1ST AND APRIL 30TH, UNLESS OTHERWISE APPROVED BY THE CITY. 14.ANY AREA NEEDING ADDITIONAL ESC MEASURES, NOT REQUIRING IMMEDIATE ATTENTION, SHALL BE ADDRESSED WITHIN SEVEN (7) DAYS. 15.THE ESC BMPS ON INACTIVE SITES SHALL BE INSPECTED AND MAINTAINED AT A MINIMUM OF ONCE A MONTH OR WITHIN 24 HOURS FOLLOWING A STORM EVENT. INSPECTION AND MAINTENANCE SHALL OCCUR MORE FREQUENTLY AS REQUIRED BY THE CITY. 16.BEFORE COMMENCEMENT OF ANY CONSTRUCTION ACTIVITY, CATCH BASIN INSERTS PER THE CITY STANDARD PLANS 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 INLET WILL BE CONVEYED TO A SEDIMENT POND OR TRAP. ALL CATCH BASIN INSERTS SHALL BE PERIODICALLY INSPECTED AND REPLACED AS NECESSARY TO ENSURE FULLY FUNCTIONING CONDITION. 17.AT NO TIME SHALL SEDIMENT ACCUMULATION EXCEED 2/3 OF THE CAPACITY OF THE CATCH BASIN SUMP. ALL CATCH BASINS AND CONVEYANCE LINES SHALL BE CLEANED PRIOR TO PAVING. THE CLEANING OPERATION SHALL NOT FLUSH SEDIMENT -LADEN WATER INTO THE DOWNSTREAM SYSTEM. 18.ANY PERMANENT STORMWATER FACILITY USED AS A TEMPORARY SETTLING BASIN SHALL BE MODIFIED WITH THE NECESSARY ESC BMPS AND SHALL PROVIDE ADEQUATE STORAGE CAPACITY. IF THE PERMANENT FACILITY IS TO FUNCTION ULTIMATELY AS AN INFILTRATION SYSTEM, THE TEMPORARY FACILITY SHALL BE ROUGH GRADED SO THAT THE BOTTOM AND SIDES ARE AT LEAST THREE FEET ABOVE THE FINAL GRADE OF THE PERMANENT FACILITY. 19.AREAS DESIGNATED ON THE PLAN(S) CONTAINING EXISTING STORMWATER FACILITIES OR ON -SITE BMPS (AMENDED SOILS, BIORETENTION, PERMEABLE PAVEMENT, ETC.) SHALL BE CLEARLY FENCED AND PROTECTED USING ESC BMPS TO AVOID SEDIMENTATION AND COMPACTION DURING CONSTRUCTION. 20.PRIOR TO THE BEGINNING OF THE WET SEASON (OCTOBER 1ST), ALL DISTURBED AREAS SHALL BE INSPECTED TO IDENTIFY WHICH ONES SHALL BE SODDED OR SEEDED IN PREPARATION FOR THE WINTER RAINS. DISTURBED AREAS SHALL BE SODDED OR SEEDED WITHIN ONE WEEK OF THE BEGINNING OF THE WET SEASON. AN EXHIBIT OF THOSE AREAS TO BE SODDED OR SEEDED AND THOSE AREAS TO REMAIN UNCOVERED SHALL BE SUBMITTED TO THE CITY FOR REVIEW. 21.PRIOR TO FINAL CONSTRUCTION ACCEPTANCE, THE PROJECT SITE SHALL BE STABILIZED TO PREVENT SEDIMENT -LADEN WATER FROM LEAVING THE PROJECT SITE, ALL ESC BMPS SHALL BE REMOVED, AND STORMWATER CONVEYANCE SYSTEMS, FACILITIES, AND ON -SITE BMPS SHALL BE RESTORED TO THEIR FULLY FUNCTIONING CONDITION. ALL DISTURBED AREAS OF THE PROJECT SITE SHALL BE VEGETATED OR OTHERWISE PERMANENTLY STABILIZED. AT A MINIMUM, DISTURBED AREAS SHALL BE SODDED OR SEEDED AND MULCHED TO ENSURE THAT SUFFICIENT COVER WILL DEVELOP SHORTLY AFTER FINAL APPROVAL. MULCH WITHOUT SEEDING IS ADEQUATE FOR SMALL AREAS TO BE LANDSCAPED BEFORE OCTOBER 1ST. 22.ROCKERIES ARE CONSIDERED TO BE A METHOD OF BANK STABILIZATION AND EROSION CONTROL. ROCKERIES SHALL NOT BE CONSTRUCTED TO SERVE AS RETAINING WALLS. ALL ROCKERIES IN CITY ROAD RIGHT-OF-WAY SHALL BE CONSTRUCTED IN ACCORDANCE WITH CITY STANDARDS. ROCKERIES OUTSIDE OF ROAD RIGHT-OF-WAY SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE INTERNATIONAL BUILDING CODE. SURVEYED: SCALE: DESIGNED:MKW NO SCALE DRAWN: MKW ONE INCH CHECKED: BEB AT FULL SCALE IF NOT ONE INCH BY DATE AP P R I APPROVED: SCALE ACCORDINGLY HORIZZONnTAL: NAD 1983/1991 Aogftktv4 CITY OF ;iqRENTON DATUM Planning/Building/Public Works Dept. 09//012018 Civil Engineers Structural Engineers Landscape Architects ■ Community Planners Natural Resource Ecologist Land Surveyors , Neighbors T A C O M A S E A T T L E S P O K A N E T R I- C I T I E S 2215 North 30th Street, Suite 300 Tacoma, WA 98403 253.383.2422 TEL 253.383.2572 FAX www.ahbl.com WEB IN COMPLIANCE WITH CITY OF RENTON STANDARDS FA EVELOPMENT ENGINEERING nn Fowler 09/20/2018 ' WALKER AUTO DEALERSHIP EARLY CLEAR AND GRADE PLANS AHBL JOB #2180100.10 TESC NOTES AND DETAILS DATE: 6/8/2018 FIELDBOOK: PAGE: DRAWING NO: C3.1 Nt Nt 0 co 1 L_J N T- N O 00 T