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HomeMy WebLinkAboutR-393409TBLOCK PTN. OF SW 114 OF NW 114 OF SEC. 32, TWP 24N, R5E W.M. rn co O 0 W I— i LU LU J Q N z LU a / S z U /W m� 3 J q W L� o L11 CD 0 mQ (� J CD o Y / U U2:: of Cl CD / ('") �� 4g, �o �N /\ aN � (U / ('') SEDIMENT POND TOP OF BERM (PER PLAN) AS REQUIRED TO MAINTAIN CONE (APPROXIMA TEL Y W. S. ELEV. 4.5' FOR D=2) 12" MIN. DIAM. PERFORATED POLYETHYLENE a TUBING OR PLASTIC PIPE 2 GRAVEL FILTER, CLEAN FREE 1 IMAX ° DRAINING GRAVEL MATERIAL---. BOT. ELEV. GRAVEL CONE NOT TO SCALE NA TI VE SOIL OR COMPACTED BACK FILL GEOTEXTILE SOLID 90' BEND 6' MIN. 12" MIN. 12" MIN. n/ IT/ 9"T RUNOFF WA TER WITH SEDIMENT PRE-M GEOTE. OPEN PIPE END AT DESIGN W.S. FABRIC 270 STEEL PIPE OR METAL STAKE, EMBED IN CONCRETE BASE OR EQUIVALENT ANCHOR SUPPORT APPROVED BY ENGINEER FINISHED GRADE (SEE PLAN) FILTE " WA TE SECURE TUBING TO PIPE SUPPORT MIN. IIrWITH STRAPPING AT 12 O.C. MIN �i��i��i�ii��ii MAINTENANCE STANDARDS 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 OUTLET PIPE WHERE AS FILL ON SITE OR HAULED OFF SITE. 6 i���i���i���i���i���i���i���, SHOWN ON PLAN � 2. ANY SEDIMENT IN THE CATCH BASIN INSERT SHALL BE REMOVED WHEN THE SEDIMENT HAS FILLED ONE THIRD OF THE AVAILABLE STORAGE. THE FILTER MEDIA FOR THE INSERT SHALL BE CLEANED OR REPLACE AT LEAST MONTHLY. zZ / 3. REGULAR MAINTENANCE IS CRITICAL FOR ALL FORMS OF CATCH BASIN/INLET PROTECTION. UNLIKE MANY FORMS OF PROTECTION 18"SQ THAT FAIL GRADUALLY. CATCH BASIN PROTECTION WILL FAIL MIN SUDDENLY AND COMPLETELY IF NOT MAINTAINED. 4. CATCH BASIN PROTECTION MUST BE REMOVED WHEN HOME CONSTRUCTION IS COMPLETE. CATCH BASIN PROTECTION 12" MIN. 2" TO 4" ROCK 314" TO 1 %2" WASHED GRAVEL STABILIZE EXPOSED SIDE SLOPES WITH VEGETATION OR EQUIVALENT MEASURES 12" MIN. OVERFLOW 4' MIN. TOP OF BERM DEPTH (TYP.)_L ,,- QUARRY SPALL PROTECTION W.S. ELEV. =SEE TABLE f AT OVERFLOW BOT. ELEV.= TEMPORARY SEDIMENT POND NOT TO SCALE L 12" MIN. L 12" MIN. 2" TO 4" ROCK 3/4" TO 1 %2" WASHED GRAVEL NON -WOVEN FILTER FABRIC DISCHARGE TO STABILIZED CONVEYANCE PATH OR APPROVED OUTLET PIPE — SECTION CONSULTANTS Site Planning • Civil Engineering Land Use Consulting • Project Management CALL BEFORE 11431 WILLOWS RD. NE, SUITE 120 YOU DIG REDMOND, WA 98052 1-800-424-5555 Phone: (425) 285-2390 1 FAX: (425) 285-2389 www.cphconsuItants.com 1ht © 2019 CPH Consultants, LLC. All Rights Reserved. NOT TO SCALE SEDIMENT POND SUMMARY TABLE DESIGN IGN Q so T ER FACILITY NO. IMPERVIOUS (AC.) PERVIOUS (AC.) TOTAL (AC.) SURFACE AREAMINIMUM W.S. ELEV. (FT.) BOT. ELEV. (FT.) SED. POND 2.27 2.02 3.27 4.29 2,421 60.00 55.00 NOTES: 1. SQUARE FOOTAGE REQUIREMENT SHOWN AT WEIR WATER SURFACE ELEVATION. 2. POND MAY BE FORMED BY BERM OR BY PARTIAL OR COMPLETE EXCAVATION. J. CONTRACTOR MAY PROPOSE ABOVE -GRADE TANK SYSTEM W/PUMP INTAKE AND OUTLET OR SIMILAR MANUFACTURED SEDIMENT REMOVAL/SETTLING SYSTEM EQUIVALENT TO THE DESIGN CAPACITY AND PERFORMANCE OF THE TYPICAL SEDIMENT POND FOR APPROVAL BY ENGINEER. 4. Qto DESIGN FLOW RATE WAS OBTAINED FROM WWHM USING UNMITIGATED FLOWS FOR FULL SITE BUILD -OUT IMPERVIOUS AREAS. NO TRESPI PROTECTEC MT EXIST. TREE )NTINUOUS CHAINLINK LACING POST AT MAX. 10' O.C. INSTALL AT LOCATION AS SHOWN ON PLANS A. CONSTRUCTION STORAGE PROHIBITED: 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 DRIP LINE OF ANY TREE TO BE RETAINED. B. FENCED PROTECTION AREA REQUIRED: THE APPLICANT SHALL ERECT AND MAINTAIN SIX FOOT (6) HIGH CHAIN LINK TEMPORARY CONSTRUCTION FENCING AROUND THE DRIP LINES OF ALL RETAINED TREES, OR ALONG THE PERIMETER OF A STAND OF RETAINED TREES. PLACARDS SHALL BE PLACED ON FENCING EVERY FIFTY FEET (50) INDICATING THE WORDS, "NO TRESPASSING-PROTED TREES" OR ON EACH SIDE OF THE FENCING IF LESS THAN FIFTY FEET (50'). SITE ACCESS TO INDIVIDUALLY PROTECTED TREES OR GROUPS OF TREES SHALL BE FENCED AND SIGNED. INDIVIDUAL TREES SHALL BE FENCED ON FOUR (4) SIDES. IN ADDITION, THE APPLICANT SHALL PROVIDE SUPERVISION WHENEVER EQUIPMENT OR TRUCKS ARE MOVING NEAR TREES. C. PROTECTION FROM GRADE CHANGES: IF THE GRADE LEVEL ADJOINING TO A TREE TO BE RETAINED IS TO BE RAISED, THE APPLICANT SHALL CONSTRUCTION A DRY ROCK WALL OR ROCK WELL AROUND THE TREE. THE DIAMETER OF THIS WALL OR WELL MUST BE EQUAL TO THE TREE'S DRIP LINE. D. IMPERVIOUS SURFACES PROHIBITED WITHIN THE DRIP LINE. THE APPLICANT MAY NOT INSTALL IMPERVIOUS SURFACE MATERIAL WITHIN THE AREA DEFINED BY THE DRIP LINE OF ANY TREE TO BE RETAINED. E. RESTRICTIONS ON GRADING WITHIN THE DRIP LINES OF RETAINED TREES: THE GRADE LEVEL AROUND ANY TREE TO BE RETAINED MAY NOT BE LOWERED WITHIN THE GREATER OF THE FOLLOWING AREAS: (i) THE AREA DEFINED BY THE DRIP LINE OF THE TREE, OR (ii) AN AREA AROUND THE TREE EQUAL TO ONE AND ONE-HALF FEET (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. (ORD. 5676, 12-3-2012) F. MULCH LAYER REQUIRED: ALL AREAS WITHIN THE REQUIRED FENCING SHALL BE COVERED COMPLETELY AND EVENLY WITH A MINIMUM OF THREE INCHES (3') OF BARK MULCH PRIOR TO INSTALLATION OF THE PROTECTIVE FENCING. EXCEPTIONS MAY BE APPROVED IN THE MULCH WILL ADVERSELY AFFECT PROTECTED GROUND COVER PLANTS. (ORD. 5676, 12-3-2012) G. MONITORING REQUIRED DURING CONSTRUCTION: THE APPLICANT SHALL RETAIN A PROFESSIONAL ARBORIST OR OTHER QUALIFIED PROFESSIONAL TO PRUNE BRANCHES AND ROOTS, FERTILIZE, AND WATER AS APPROPRIATE FOR ANY TREES AND GROUND COVER WHICH ARE TO RETAINED. H. ALTERNATIVE PROTECTION: ALTERNATIVE SAFEGUARDS MAY BE USED IF DETERMINED TO PROVIDE EQUAL OR GREATER TREE PROTECTION. (ORD. 5676, 12-3-2012) TREE PROTECTION FENCE DETAIL NOT TO SCALE S C QV WAS Q � 6 M 37610 .� CTSTS "ZONAL THE THE AS -BUILT INFORMATION SHOWN ON THIS PLAN IS PER A FIELD SURVEY PERFORMED AND DATA PROVIDED BY AXIS SURVEY & MAPPING AND/OR RECORD INFORMATION PROVIDED BY THE CONTRACTOR. R-393409 IN COMPLIANCE WITH CITY OF RENTON STANDARDS CITY OF RENTON PERMIT SUBMITTAL BHB 5/1/18 JBS I SURVEYED: STEPHEN PHILLIPS PLS SCALE: HORIZONTAL: FAR 1198 /1991 DATUM c O T OF RENTON VASSiv Planning/Building/Public Works Dept. SENZA LAKEVIEW ROADWAY GRADING, DRAINAGE AND SANITARY SEWER IMPROVEMENTS ESC DETAILS DACE. 5/1 /18 RECORD DRAWINGS MRL 3/11/19 JBS DESIGNED: BRYCE BESSETTE PACE: °GK PAGE: DRAWN. JOE AMARo ONE '"G" DRAWING N° C1.1 01 CHECKED: JAMIE B. SCHROEDER, PE AT FULL SCALE IF NOT ONE wc" SCALE ACCORDINGLY N 0. REVISION - 7 DA— AP P R APPROVED: I—E- OF 48 LU LU Q N z W � VJ