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HomeMy WebLinkAboutR-417744C17F C18F NOTE: TYPICAL BIORETENTION CELLS RETENTION CELLS IN NORTH ROW OF PARKING CELLS SHALL BE MIRRORED. BIORETENTION CELL LAYOUT 1 TYPICAL AT 675A, 675131 674131 674C, 672131 672C, 671131 & 671 C NQTF: TYPICAL BIORETENTION CELLS RETENTION CELLS IN NORTH ROW OF PARKING CELLS SHALL BE MIRRORED. TYR 9.0' BIORETENTION CELL LAYOUT 2 TYPICAL AT 674A & 673A C17E SCALE: 1" = 5' N C18E C17F C18F " CALL 48 HOURS I BEFORE YOU DIG 1-800-424-5555 SYM I RENSION -117-fil7i Effwn ml WSPUS4AC 3330I 9N AameS It S Ka 300 R al Way, WAWO0 2Y TEL: GPM)431-DUO FAX:(i )431d350 BY nPPROVED DATE 07 C180242 WSP SPT 09/21 REVISION Ly_� BIORETENTION LAYOUT AT 672A O C17E SCALE: 1" 5' BY I APPROVED I DATA: 2 1/2° TYP. 5' xI DRILL HOLES THRU PAVEMENT TO MATCH WHEELSTOP HOLE PATTERN. DRIVE 24" LONG REBAR THROUGH WHEELSTOP AND PAVEMENT INTO SUBGRADE. (a) BIORETENTION LAYOUT AT 671 A ^J C18E SCALE: 1" 5' C17E —1' RADIUS ttP. —PREFABRICATED WHEEL STOP TOP OF PAVEMENT ROUT SMOOTH AT TOP OF REBAR 7775Z 1' (3) W4 REBAR 2'-0" LONG PER WHEEL STOP^T SALVAGED WHEEL STOP INSTALLATION SCALE: NTS i L -BOEArw" ACCEPTABILITY THIS DESIGN AND/OR SPECIFICATION IS APPROVED APPROVED�PTICC LEGEND —SAS STORM CONVEYANCE PIPE UD SLOTTED UNDERDRAIN PIPE TOP OF PONDING/BOTTOM OF FREEBOARD TOP OF SOIL/BOTTOM OF FUNDING GENERAL NOTES 1. HORIZONTAL DATUM: WASHINGTON STATE COORDINATE SYSTEM, NORTH ZONE, NORTH AMERICA DATUM 1983(91). VERTICAL DATUM: NATIONAL GEODETIC VERTICAL DATUM 1929 (NGVD29). VERTICAL DATUM CONVERSION: NGVD29 TO THE NORTH AMERICAN VERTICAL DATUM 1988 (NAVD88) _ NGVD29 + 3.60 FEET. 2. THERE SHALL BE NO EXPOSED GALVANIZED MATERIALS, COATINGS OR ZINC APPLIED SURFACE TREATMENTS ON ANY EXTERIOR OR UNDERGROUND MATERIALS OR SURFACES. ALL GALVANIZED OR ZINC APPLIED MATERIALS OR COATINGS SHALL BE PERMANENTLY PAINTED OR COATED TO PREVENT EXPOSURE OF THE GALVANIZED/ZINC MATERIALS PRIOR TO INSTALLATION OR COMPLETION OF CONSTRUCTION. 3. PERMANENT WATER QUALITY TREATMENT FACILITIES SHALL NOT BE USED TO CONVEY OR CONTAIN CONSTRUCTION STORM WATER. NEW FACILITIES SHALL BE KEPT OFFLINE UNTIL PROJECT IS COMPLETE. THE CONTRACTOR SHALL CLEAN AND FLUSH ALL PARTS OF THE SYSTEM PRIOR. SEE GENERAL NOTES ON SHEET C501—IA AND C501-113. 4. SEE SHEETS C17E, C17F, C18E, AND C18F FOR OVERFLOW STRUCTURE INFORMATION AND CONVEYANCE PIPE INFORMATION. 5. SEE BIORETENTION LANDSCAPING PLANS ON SHEETS L501-7A THROUGH L501-7B FOR PLANTING DETAILS. 6. BIORETENTION SOIL MEDIA SHALL BE PER THE BIORETENTION SOIL MEDIA STANDARD SPECIFICATIONS PROVIDED IN REFERENCE SECTION 11—C OF THE 2017 Cltt OF RENTON SURFACE WATER DESIGN MANUAL. SEE SHEET C501-6K. 7. STREAMBED COBBLES SHALL BE PER WSDOT STANDARD SPEC SECTION 9-30.11(2) 8. EXTRUDED CURB SHALL BE WSDOT STD PLAN F-10.42-00 TYPE 6 9. INSTALL NEW/SALVAGED CONCRETE WHEELSTOP PER DEAL 5, SHEET C501-6H. 10. SLOTTED UNDERDRAIN SHALL BE SLOTTED SUBSURFACE DRAIN PVC PER ASTM D1785 SCH 40. SLOTS SHOULD BE CUT PERPENDICULAR TO THE LONG AXIS OF THE PIPE AND BE 0.04 TO 0.069 INCHES BY 1 INCH LONG AND BE SPACED 0.25 INCHES APART (SPACED LONGITUDINALLY). SLOTS SHOULD BE ARRANGED IN FOUR ROWS SPACED ON 45—DEGREE CENTERS AND COVER 1/2 OF THE CIRCUMFERENCE OF THE PIPE. OBSERVATION WELL CONSTRUCTED OF NON —PERFORATED MATERIAL SHALL BE LOCATED AT END OF PIPE. OBSERVATION PORT SHALL HAVE LOCKING CAST—IRON LID. 11. CONTRACTOR SHALL VERIFY DEPTH TO SEASONAL HIGH GROUNDWATER PRIOR TO CONSTRUCTION AND NOTIFY ENGINEER IMMEDIATELY IF DEPTH IS LESS THAN 7.5—FEET FROM EXISTING GRADE. 12. CONTRACTOR'S AS —BUILT RECORD DOCUMENTS SHALL INCLUDE IN —PLACE INFILTRATION RATE FOR EACH COMPLETE BIORETENTION CELL. INFILTRATION RATE TEST SHALL BE PERFORMED USING THE PILOT INFILTRATION TEST (PIT) METHOD AT THE FINISHED SURFACE OF THE BIORETENTION SOIL MIX WITH A MAXIMUM 6—INCH PENDING DEPTH. 13. CONTRACTOR SHALL RELOCATE AND/OR ENCASE ELECTRICAL CONDUIT IN CDF AS DIRECTED BY THE ENGINEER AND BOEING. CONSTRUCTION NOTES EXISTING PARKING STALL STRIPING WHEEL STOP EXTRUDED CURB 6" SLOTTED UNDERDRAIN. SEE NOTE 10. OBSERVATION WELL © EDGE OF ASPHALT/TOP OF FREE BOARD TOP OF PONDING/BOTTOM OF FREE BOARD TOP OF SOIL/BOTTOM OF PONDING CONVEYANCE PIPE CONNECTIONS PER PLAN ip PROVIDE 18—INCH MINIMUM WIDTH CURB CUT GRADE TO DRAIN TO BIORETENTION CELL, SEE LANDSCAPING 11 PLANS FOR TOPSOIL REQUIREMENTS. 12 NEW PARKING STALL STRIPING [CIVIL PER STORM DETAILS R-41770441 IN COMPLIANCE WITH CITY OF RENTON STANDARDS o[velOREWf WMERIW C1 C042 01-6H 07/Oaj71 RENTON SITE MASTER S 11 C 180242 I_-.... RTN-YD-0501-6H