HomeMy WebLinkAbout249.00PLANTINGS REQUIRED ON CUT
SLOPES FOR SENSITIVE LAKE
PROTECTION FACILITIES
ACCESS ROAD TO INLET STRUCTURE
ACCESS ROAD TO
OUTLET STRUCTURE
NOTES:
1.THIS DETAIL IS A SCHEMATIC REPRESENTATION ONLY. ACTUAL CONFIGURATION WILL VARY DEPENDING ON SPECIFIC SITE CONSTRAINTS AND APPLICABLE DESIGN
CRITERIA.
2.SEE STANDARD PLAN 249.10 FOR TYPICAL WETPOND CROSS SECTIONS.
3.ACCESS ROAD AND RAMP SHALL MEET REQUIREMENTS IN STD. PLAN 234.50.
4.SIDE SLOPES (INTERIOR AND EXTERIOR) SHALL NOT BE STEEPER THAN THREE (3) FEET HORIZONTAL TO ONE (1) FOOT VERTICAL.
5.OPEN PONDS SHALL NOT BE LOCATED IN DEDICATED PUBLIC RIGHT-OF-WAY.
6.EXPOSED EARTH ON THE POND BOTTOM AND INTERIOR SIDE SLOPES SHALL BE SODDED OR SEEDED WITH AN APPROPRIATE SEED MIXTURE PER SECTION 5.1.1.1
OF THE CITY OF RENTON SURFACE WATER DESIGN MANUAL (RENTON SWDM). ALL REMAINING AREAS OF THE TRACT MUST EITHER BE PLANTED WITH GRASS, OR BE
LANDSCAPED IN ACCORDANCE WITH LANDSCAPING REQUIREMENTS INCLUDED IN SECTION 6.4.1.2 OF THE RENTON SWDM.
7.LANDSCAPING, TREES, POND GEOMETRY AND FENCING STANDARDS ARE SPECIFIED IN STD. PLAN 234.40.
8.WETPONDS WITH WETPOOL VOLUMES LESS THAN OR EQUAL TO 4,000 CUBIC FEET MAY BE SINGLE-CELLED (I.E. NO BAFFLE OR BERM IS REQUIRED).
9.WHEN CONNECTING TO A NEW PIPE, USE A FLEXIBLE CONNECTOR (KOR-N-SEAL BOOT WITH CORRUGATED PIPE ADAPTER OR APPROVED EQUAL). WHEN
CONNECTING TO AN EXISTING PIPE, USE A FABRICATED SAND COLLAR OF THE SAME MATERIAL AS THE CONNECTING PIPE.
10.SEE CONSTRUCTION PLANS FOR SPECIFIC PROJECT REQUIREMENTS.
INLET PIPE & CATCH BASIN PER
DETENTION FACILITY REQUIREMENTS
TOP OF BERM OR BAFFLE TO BE LEVEL
AND AT OR 1' BELOW WATER QUALITY
(WQ) DESIGN WATER SURFACE (WS).
EXTEND BERM OR BAFFLE ACROSS
ENTIRE WETPOOL WIDTH
FIRST WETPOOL CELL
25% TO 35% OF WETPOOL VOLUME,
EXCLUDING ACCESS RAMP
BERM, TOP WIDTH 5' MIN. IF EARTHEN
SECOND WETPOOL CELL
WQ DESIGN WS
OVERFLOW WS
EMERGENCY OVERFLOW WS
EMERGENCY SPILLWAY PER
DETENTION FACILITY REQUIREMENTS
MANHOLE OR TYPE 2 CATCH BASIN AND
OUTLET PIPE SIZED TO PASS PEAK FLOW
PER CONVEYANCE REQUIREMENTS
OUTLET EROSION CONTROL &
ENERGY DISSIPATION PER
DETENTION FACILITY REQUIREMENTS
ACCESS RAMP TO BOTTOM OF FIRST WETPOOL CELL
QUARRY SPALL PAD
3H:1V MAX.
SEE NOTE 4
3H:1V MAX.
SEE NOTE 4
OUTLET PIPE
SEE NOTE 9 (TYP.)
TYPICAL WETPOND
STD. PLAN - 249.00A249.10PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEGregg Zimmerman
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)B249.10DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
9/28/2018 | 9:45 AM PDT