HomeMy WebLinkAbout252.00ACCESS ROAD TO INLET STRUCTURE
FIRST WETPOOL CELL
25% TO 35% OF WETPOOL
VOLUME, EXCLUDING
ACCESS RAMP
SECOND WETPOOL CELL
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 252.10 FOR TYPICAL
COMBINED DETENTION AND 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 OR
ZONE 1 OF THE APA.
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.ALL FACILITIES SHALL BE FENCED. FENCE
SHALL BE PROVIDED IN ACCORDANCE
WITH STD. PLAN 234.40.
8.LANDSCAPING, TREES, AND POND
GEOMETRY STANDARDS ARE SPECIFIED
IN STD. PLAN 234.40.
9.COMBINED DETENTION AND 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).
10.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.
11.SEE CONSTRUCTION PLANS FOR SPECIFIC
PROJECT REQUIREMENTS.
INLET PIPE & CATCH BASIN PER
WETPOND FACILITY REQUIREMENTS
ACCESS RAMP TO BOTTOM
OF FIRST WETPOOL CELL
BERM TOP WIDTH 5'
MIN. (IF EARTHEN)
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
EMERGENCY OVERFLOW WS
OVERFLOW WS
DETENTION WS
WQ DESIGN WS
OUTLET FLOW CONTROL STRUCTURE PER STD.
PLANS 237.00-237.20 AND OUTLET PIPE SIZED
PER DETENTION FACILITY REQUIREMENTS OUTLET EROSION CONTROL
& ENERGY DISSIPATION
PER DETENTION FACILITY
REQUIREMENTS
TRACT LINES
AS REQUIRED
5'
SETBACK,
MIN.
WETPOOL
WIDTH
EMERGENCY
SPILLWAY
PLANTINGS REQUIRED ON
CUT SLOPES FOR
SENSITIVE LAKE
PROTECTION FACILITIES
QUARRY SPALL PAD
3H:1V MAX.
SEE NOTE 4
3H:1V MAX.
SEE NOTE 4
OUTLET PIPE
SEE NOTE 10 (TYP.)
COMBINED DETENTION AND
WETPOND
STD. PLAN - 252.00A252.10PUBLIC WORKS
DEPARTMENT
APPROVED:
DATEGregg Zimmerman
Public Works Administrator
UNLESS OTHERWISE NOTED, DRAWING IS NOT TO SCALE (NTS)B252.10DocuSign Envelope ID: 6EECF5B6-602A-4E4A-B436-A317AA638878
9/28/2018 | 9:45 AM PDT