Attachment A - Project Concept Plan
(Pasadena Location)
Storm Drain Diversion (25 cfs)
• with Drop Inlet Stucture See
DETAIL 1', SH 3.
3eway actuated valve AEL AVE
ARROYO SECO
Pre-Treatment Unt
(25 dil. See DETAIL 2, SH. 3
• Pasadena RW
ison rem
LACFCO R/W
Existing Trai
Construct f90r of 5 wide natural
stream for dry weather fows
Install 190° of RC slab cover over open.
channel per LACFCD Guidelines for
Channel Overbuild
Post Treatment
Fitation Unit (2.8 ch)
Overtow discharge to
Anoyo Saco Channel
- Dry Whather overflow pand
Dry Weather discharge pipe
CITY OF LOS ANGELES •CITY OF PASADENA
Remove aristing
bridge and Inatan
Pedestion Bridge
Desinape Easers Dry Weather Drop Inset
PRELIMINARY CONCEPTUAL DESIGN
PLAN CITY OF PASADENA PUBLIC WORKS DEPARTMENT
craft water 20012-ULARSRFS
Scale: 1" = 40-0 ARROYO SECO - SAN RAFAEL TREATMENT WETLANDS
O GALANG PROJECT
CRAFTER REGIONAL STORMWATER CAPTURE PROJECT
O. GALANG SAN RAFAEL GENERAL SITE PLAN
CHECKER NATURAL STREAM RESTORATION AND WETLAND RASINS
C. HELMLE
Attachment A - Project Concept Plan
(South Pasadena Location)
ARROYO SECO CHANNEL
Pump Batin
Actuated Valve
on pump ant SHe CETAL 7, 58.27
facherge podine
Fast Thead
tiefends and Stolse
HSAF 22 MG Ragra and sorsher
Farting Lit at Perreste
Pars
KEY DRIVE
Traine Tal Pidec
STONEY DRVE
PRELIMINARY CONCEPTUAL DESIGN
PLAN 2001348 ARRES CITV OF SOUTH PASADENA PUBLIC WORKE DEPARTMENT Scale: 1° = 40-0° ARROYO SECO - SAN RAFAEL TREATMENT WETLANDS
O CALANC PROJECT
DAN TER REGIONAL STORMPIATER CAPTURE PROVECT
O. GALANG
ARROVO SECO (BAN PASCUALI BITE PLAN
* HEIMLE CENERAL SITE PLAN