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Home My WebLink AboutR-390704rs- (�3y)'� C-,J O 1 LU Q n I- rr O �_ v) W 5 Iq I- LU LU v/ _11 NOTE: 1. REFER TO LANDSCAPE DWGS FOR SPECIFIC TREES TO BE FENCED. N Y INSTALL TREE PRESERVATION (FENCE 5' FROM DRIP LINE w ZIJ a �IO SIGNIFICANT EXISTING TREE 5' TO BE SAVED MARK TREES TO BE SAVED WITH FLAGGING T TYPICAL EXISTING TREE PROTECTION PUTS, 1-7/8' STRUCTURAL WEIGHT STEEL POST SET 2' BELOW GRADE WITH 11 GAUGE GALVANIZED CHAINLINK MESH. SET POSTS 10' O.C. MAX, 6'-O" TYP. 2'-0" TYP. EROSION CONTROL WET SEASON REQU I REM ENTS Sites with exposed soils during the WET SEASON (October 1 to April 30) shall be subject to special erosion control provisions. These special provisions are required in addition to the standard TIC cover measures. Please notify contractor of these requirements. All projects that clear, grade or otherwise disturb the site, must provide erosion and sediment controls to the maximum extent possible, to prevent the transport of sediment from the project site to downstream drainage fatalities, water resources, and adlacent properties. The following provisions for wet season construction are detailed in Appendix ID of the 2OD9 Kng Count Surface Water Manual. Please ensure your site is protected and complies with the special provisions outlined below. The basic requirements are: 1. The allowed time that a disturbed area can remain unworked without cover measures is reduced to two (2) days, rather than seven (7) days. 2. Stockpiles, seep cut, and fill slopes are to be covered or protected with mulch, sod, plastic covering, jute mat etc, if left unworked for more than 12 hours. 3. Cover materials (plastic, matting, etc) sufficient to cover all disturbed areas, shall be stockpiled and available on site. 4. All areas that are to be unworked during the wet season shall be seeded within one week of the beginning of the wet season. Seeded should be completed by September 23. 5. Mulch is required to protect all seeded areas. 6. Rfty linear feet of silt fence (and the necessary stakes) per disturbed acre must be stockpiled on site. 7. Property installed silt fencing is mandatory along the downslope of all disturbed areas of the site. Perimeter protection filters runoff and reduces the amount of sediment that may leave the site. 8. Sediment retention is required unless no offsite discharge is anticipated for the specified design flaw. 9. Construction road and parking lot stabilization are required for all sites unless the site is underlain by course -grained sail. 10, Surface water controls are required unless no offsite discharge is anticipated for the specified design flow. 11. Phasing and more conservative I3MPs must be evaluated for construction activity near surface waters. 12. Any runoff generated by dewatering shall be treated through construction of a sediment trap when there is sufficient space or by releasing the water to a well vegetated, gently sloping area. Since pumps are used for dewatering, it may be possible to pump the sediment -laden water well away from the surface water so that vegetation can be more effectively utilized for treatment. Astraw bale filter shall be placed around the discharge from the dewatering pump. If there is not space for a sediment trap or 25 feet of suitable vegetation, other filtration methods shall be required. 13, The frequency of maintenance review should be increased from weekly to daily where warranted. OFFE ENGINEERS 13932 SOUTHEAST 159TH PLACE RENTON, WASHINGTON 98058 PHONE: 425-260-3412 CONTACT: DARRELL OFFE, P.E. JOINTS IN FILTER FASRIC SF54L BE SPLICED AT POSTS USE STAPLES, WIRE RI4GS, OR rMAVAtFNT Tn ATT9[-_4 FARRIC In PrATk POST SPACING MAY SE INCREASER TO W IF WIRE BACKING IS LIS?� 7kT SY 14 GB. SHIRE OR EQUIVALENT, IF STANDARD STRENGTH FABRIC USED FILTER FABRIC MINIMUM 4-,4- TRENCH LEWCKrILL TRENCH WITH 7 NATIVE SEAL vw wooD POSTS- STEEL FENCE .` POSTS, REBAR, OR EOUMALENr IIDTES 1. CONDmON OF USE 1A. SILT FENCE MAY BE USED DOWN SLOPE OF ALL DMURBEDAREAS. 1.2. 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 THROU3H THE DRAINAGE SYSTEM TO A SEDIMENT TRAP OR POND. 9. DESIGN AND INSTALLATION SPECIFICATIONS 2.1- THE GEOTExTiLE LASED NCST MET -HE STANDARD LISTER BELLOW. A COPY OF THE MANUFACTURER'S FABRIC SPECIFICATIONS MOST BE AVAILABLE ON SITE. 30- 1W 51EVt SRC IR6&Cr. I WMj'O 151LT FILM A[S{ARTM04751' FY1W 51EVE SIZE Ie Y.)OU ISMM=OI OTHER FABRICS IwATER P ERMrm HTT iA3TM D"0.O25EC"1MNIMWq GIMBTENSILE STIENCHRIASTM CW632j 11N: IS. Mk. Fn4 FIT RA CTAFN rm IARR:L 100 M. MN. FOR STANDARD STRENGHT FA BRIM GMB TEN 51 LE ELCNGATIDN JA5TIA D4rA21 30M 1TAX ULTRAVIULATE RG157ANGz JASPA D4355 7o%WN. 2.2. STANDARD STRENGTH FABRIC REOJIRES WIRE BACK INGTO INCREASE THE STRENGTH CF THE FENCE. WIRE EAACKING OR CLOSER POST SPACING MAYBE REQUIRED FOR EXTRA STRENGTH FABRIC IF FIELD PERFORMANCE WARRANTS A STRONGER FENCE. 2.3. WHERE THE FENCE 13 INSTALLED, THE SLOPE SHALL NOT BE STEEPER THAN 2H:1V 2.4. IF A TYPICAL SILT FENCE IS USED, THE STANDARD 4X4 TRENCH MAY NOT BE REDUCED AS LONG AS THE BOTTOM 8 INCHES OF THE SILT FENCE 15 VTELL BURIED AND SECURE IN A TRENCH THAT STAB ILILES 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 FLOE ARE EVIDENT UPHILL 00 THE FENCE, THEY MUST BE INTERCEPTED AND 0OWEYE0TOA SEDIMENT TRAP OR POND. 3-3- IT IS IMPORTANT TO CHE,,K THE UPHILL SIDE OF THE FET.CE FOR SIGNS OF THc FENCE CLOGGING AND ACTING AS A BARRIER TO FLOW AND THEN CAUSING C HANNELIZATI ON OF FLOWS PARALLEL TO THE FENCE IF THISOCCUIRS. REPLACE THE FENCE DR REMOVED THE TRAP SEDIMENT. 3.4. SEDIMENT hK73T BE REMOVED WHEN SEDIMENT IS B INCHES HIGH, 3-5- IF THE FILTER FABRIC (GEOTEXTIL.EI HAS DETERIORATE♦1 DUE TO ULTRAVIOLETBREAKDOWN. IT SHALL BE REPLACED - PUBLIC WORKS DEPARTMENT SILT FENCE SAD. PLAN - 214.00 MARCH 2008 9 DRIVEWAYS SMLL BE PAVED TO THE EDGE `Y OF RAW PRIOR TO INSTAL LAMON OF MITE SS G" CONSTRUCTION ENTRANCE TO AVOID V' DAMAGING OF THC ROADWAY IT {S RECOMMENDED TMT THE R = 25' MIN.-11 ENrRANOF.. BF CROWNED SO THAT RUNOFF DRAIIMS OFFTFE PAT] INSTALL DRIVEWI 13 A ROADSIDE DI PER CrrY ROADS 6� 12" NI N. TFIICILNE99 �- PROVIDE RRL WIDTH OF NOTES INC 1EMEGRESS ARM 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 1.000 FEET OFTHE SITE. GPAS TENSILE 5TRE BNGTH JASTM D4751) 1200 P9 MIN. GRAS TENSILE fIANGAT 10N (ASTM D4E.32I 3G°.G TAA %. MULLEN BURST STRENGTH (ASTM 03786-80A 400 PS MIN. AOs ASIM047S1] 20-45W-5-STANDARD5IEVE SIZE I 2. DESIGN AND INSTALLATION SPECIFICATIONS 2.1. HOG FUEL {WOOD BASED MULCH] MAY BE SUBSTITUTED FOR OR COMBINED WITH QUARRYSPALLS IN ARES THAT WILL BOTBE USED FOR PERMANENT ROADS. HOG FUEL IS NO- RECOMMENDED FOR ENTRANCE STABILIZATION IN URBAN AREAS. THE INSPECTOR MAY AT ANYTIME REQUIRETHE USE OF QUARRY SPALLS IF THE HOG FUEL IS NOT PREVENTING SEDIMENT =ROM BEING TRACKED ONTO PAVEMENT OR IF THE HOG FUEL IS BEING CARRIED ONTO PAVEMENT. 2.2. 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 EFFECTNENESS OF THE PAD AND REDUCE THE NEED FOR MAINTENANCE. 3. MAINTENANCE STAN13ARDA 3.1, QUARRY SPALLS SHAL- BE ADDED IF THE PAD IS NO LONGER IN ACCORDANCE WITH THE SPECIFICATIONS. 32. IF -HE ENTRANCE IS NOT PREVENTING SEDIMENT BEING TRACKED ONTO PAVEMENT, THENALTERNATIVE MEASURES TO KEEP THE STREETS FREE OF SEDIMENT SHALL BE USED. THIS MAY INCLUDE STREET SWEEPING, AN INCREASE IN THE DIMENSIONS OF THE ENTRANCE, OR THE INSTALLATION OF THE WHEEL WASH. IF WASHING IS USED, IT SHALL BE DONE ON AN AREA COVERED ATrH CRUSHED ROCK, AND WASHED WATER SHALL DRAIN TO A SEDIu1ENT TRAP OR POND, 3.3. ANY SEDIMENT THAT IS TRACKED ONTO PAVEMENT SHALL BE REMOVED IMMEDIATELY BY SWEEPING. THE SEDI MENT COL LECTED BY SWEEPING SHALL BE REMOVED OR STABILIZED ON SITE. THE PAVEMENT SHALL NOT BE CLEANED BY HASHING DOWN THE STREET, EXCEPT WHEN SWEEPING IS INEFFECTIVE AND THERE IS THREAT TO PUBLIC SAFETY. IF IT NECESSARY TO WASH THE STREETS, A 5MAIL L SUMP MUST BE CONDUCTED, THE SEDIMENT WOULD THEN BE WASHED INTO THE SUMP WHERE IT CAN BE CONTROLLED AND ❑tSCHARGED APPROPRIATELY. 3.4- ANY QUARRY SPALLS THAT ARE LOOSENED FROM THE PAD AND ENO UP ON THE ROADWAY SHALL BE P.EMOVED IMMEDULTELY- 3.5- IF VEHICLES ARE ENTERING OR EXITING THE SITES AT POINTS OTHER THAN THE CONSTRUCTION ENTR7NCE(S), FENCING SHALL BE INSTALLED TO CONTROL TRAFFIC - PUBLIC WORKS STABILIZED SM. PLAN - 216.10 * 1* DEPARTMENT CONSTRUCTION ENTRANCE 112ARCIi 2009 WX DRAINAGE GRATE TRIM GRATE FRAME � 9 SEDIMENT AND DEBRIS DVFRFI OW BYPASS � BELOW INLET GRATE DEVICE y FILL"� WATHi 6 A SECTION VIEW DRMNAGEGRATE .. RECTANGULAR GRATE SHOWN RETRIEVAL SYSTEM rTYP.I ❑ 'V '�� f o H J BELOW NLET GRATE DEVICE OVERFLOW BY PASS ITYP.] ISOMETRIC VIM NOTES 1. Sloe the BEIUW Inlet Grate Device (BIOD) for 1he storm vater struch.re it will service. 2- The B113D shall have a built-in sigh -flow Feler system (Cvadlow bypIaa). 3. The rel'leval system must allow removal of fie SIGD wl31out Spiillng the cellecled mateal- 4. Perform mairdenarce in accordance with Standard SpeciFcabon 8-01.3(15). SAD. PLAN - 216.30 +I� * PUBLIC WORKS CATCH BASIN FILTER DEPARTMENT MARCH 2O0B 4' MIN 1' DEPTH 2'- 4- ROCK 3 2'SETTLING DEPTH , r 15'SEDIMENT STORAGE ` 1' DEPTH 3N-- 1.112- WASHED GRAVEL CROSS SECTION NTS T OVERFLOW DEPTH OUTFLOW CHANNEL IF CONSTRUCTED BY EXCAVATION FILYERFABRR;FENCING OVERFLOW SPILLWAY TMN WIDW I.S' SEDIMENT STORAGE Z SETTING DEPTH 6 1' DEPTH OF 7i'ROCK 1' DEPTH OF S4'AZ WASHED GRWEL. NOTE: MAY BE CONSTRUCTED BY EXCAVATION OR BY BUILDING A BERM Y SM. PLAN - 211.00 C� PUBLIC WORKS SEDIMENT TRAP DEPARTMENT MARCH 2O0B WASyo��t> SURVEYED: DESIGNED: D.L. OFFE, P.E. ° DRAWN: 27460 CHECKED: /STFA_ Fss� 0 N A L ° ° 08/14/2017 NO. REVISION BY DATE APPR APPROVED: SCALE: ONE INCH AT FULL SCALE IF NOT ONE INCH SCALE ACCORDINGLY VERTICAL: NAVD 1988 HORIZONTAL: NAD 1983/1991 DATU M �3�l�x�l�[�l►��l�[.Y��N��1�1:�1►LeZK�]►E.9ri�l�l�[�L A. THE APPLICANT MAY NOT FILL, EXCAVATE, STACK OR STORE ANY EQUIPMENT, DISPOSE OF ANY MATERIALS, SUPPLIES OR FLUIDS, OPERATE ANY EQUIPMENT, INSTALL IMPERVIOUS SURFACES, OR COMPACT THE EARTH IN ANY WAY WITHIN THE AREA DEFINED BY THE DROP LINE OF ANY TREE TO BE RETAINED. B. PRIOR TO DEVELOPMENT ACTIVITIES, THE APPLICANT SHALL ERECT AND MAINTAIN SIX-FOOT (6') HIGH CHAIN LINK TEMPORARY CONSTRUCTION FENCING AROUND THE DROP LINES OF ALL RETAINED TREES OR AT A DISTANCE SURROUNDING THE TREE EQUAL Zt TO ONE AND ONE -QUARTER FEET (1.25') FOR EVERY ONE INCH (1") OF TRUNK CALIPER, co WHICHEVER IS GREATER, OR ALONG THE PERIMETER OF A TREE PROTECTION TRACT. LO PLACARDS SHALL BE PLACED ON FENCING EVERY FIFTY FEET (50') INDICATING THE 194- WORDS, "NO TRESPASSING - PROTECTED TREES", OR ON EACH SIDE OF THE p FENCING IF LESS THAN FIFTY FEET (50'). SITE ACCESS TO INDIVIDUALLY PROTECTED O TREES OR GROUPS OF TREES SHALL BE FENCED AND SIGNED. INDIVIDUAL TREES SHALL CI BE FENCED ON FOUR (4) SIDES. IN ADDITION, THE APPLICANT SHALL PROVIDE r SUPERVISION WHENEVER EQUIPMENT OR TRUCKS ARE MOVING NEAR TREES. D C. IF THE GRADE LEVEL ADJOINING TO A TREE TO BE RETAINED IS TO BE RAISED, THE APPLICANT SHALL CONSTRUCT A DRY ROCK WALL OR ROCK WELL AROUND THE TREE. U THE DIAMETER OF THIS WALL OR WELL MUST BE EQUAL TO THE TREE'S DRIP LINE. D. THE APPLICANT MAY NOT INSTALL IMPERVIOUS SURFACE MATERIAL WITHIN THE AREA DEFINED BY THE DROP LINE OF ANY TREE TO BE RETAINED. E. THE GRADE LEVEL AROUND ANY TREE TO BE RETAINED MAY NOT BE LOWERED WITHIN THE GREATER OF THE FOLLOWING AREAS: (1) THE AREA DEFINED BY THE DROP LINE OF THE TREE, OR (II) AN AREA AROUND THE TREE EQUAL TO ONE AND ONE-HALF FEET (1-1/2') IN DIAMETER FOR EACH ONE INCH (1') OF TREE CALIPER. A LARGER TREE PROTECTION ZONE BASED ON TREE SIZE, SPECIES, SOIL, OR OTHER CONDITIONS MAY BE REQUIRED. F. ALL AREAS WITHIN THE REQUIRED FENCING SHALL BE COVERED COMPLETELY AND EVENLY WITH A MINIMUM OF THREE INCHES (3") OF BARK MULCH PRIOR TO 00 INSTALLATION OF THE PROTECTIVE FENCING. EXCEPTIONS MAY BE APPROVED IF THE CM MULCH WILL ADVERSELY AFFECT PROTECTED GROUND COVER PLANTS. G. THE APPLICANT SHALL RETAIN A CERTIFIED ARBORIST OR LICENSED LANDSCAPE O O ARCHITECT TO ENSURE TREES ARE PROTECTED FROM DEVELOPMENT ACTIVITES AND/OR TO PRUNE BRANCHES AND ROOTS, FERTILIZE, AND WATER AS APPROPRIATE FOR ANY TREES AND GROUND COVER THAT ARE TO BE RETAINED. CITY OF PRI RENTON Ntor Planning/Building/Public Works Dept. CONSTRUCTION SEQUANCE 1. PRE -CONSTRUCTION MEETING. 2. POST SIGN WITH NAME AND PHONE NUMBER OF ESC SUPERVISOR (MAY BE CONSOLIDATED W/THE REQUIRED NOTICE OF CONSTRUCTION SIGN). 3. FLAG OR FENCE CLEARING LIMITS. INSTALL TREE PROTECTION FENCING AS SHOWN ON PLAN. 4. INSTALL CATCH BASIN PROTECTION AS SHOWN ON PLAN. 5. INSTALL AND GRADE ROCKED CONSTRUCTION ENTRANCE. 6. INSTALL PERIMETER PROTECTION AS SHOWN ON PLAN. 7. CONSTRUCT SEDIMENT TRAP AS SHOWN ON PLAN. 8. GRADE AND STABILIZE CONSTRUCTION ROADS. 9. CONSTRUCT SURFACE WATER CONTROLS (INTERCEPTOR DIKES, PIPE SLOPE DRAINS, ETC.) SIMULTANEOUSLY WITH CLEARING AND GRADING FOR PORJECT DEVELOPMENT. 10. MAINTAIN EROSION CONTROL MEASURES IN ACCORDANCE WITH APPENDIX D OF THE SURFACE WATER DESIGN MANUAL AND MANUFACTURE'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 CITY'S 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 EROSION CONTROL MEASURES REMOVED. R-390704 IN COMPLIANCE WITH CITY OF RENTON STANDARDS DEVELOPMENT ENGINEERING .J SURFACE WATER UTILITY � ,� ILI T D J CM O O 0 cfl (Fitz -James 08/30/2017 rstraka 09/01/2017 Q MEAD SHORT PLAT TUSCANY CONSTRUCTION, LLC EROSION CONTROL DETAIL & NOTES 522 HOQUTAM AVENUE NE RENTON, WASHINGTON J n IIr DATE: O FIELDBOOK: PAGE: DRAWING NO: Q SHEET: 4 OF: 20 LU 75