Attachment C
Watershed areas of large trash capture projects:
1. 45th Avenue and San Leandro Street
2. 47th Avenue and Union Pacific Rail Road (UPRR)
3. 85th Avenue and G Street.
Candidate Project Findings Memo
45th & San Leandro Street
Project Owner: The City of Oakland
Project Description
This is one of five sites identified for proposed
large trash capture facilities. The proposed
Debris Separating Baffle Box (DSBB) is
located at the intersection of 45th Avenue
and San Leandro Street along Peralta Creek
storm sewer system.
Proposed DSBB Location
Caltrans Hydraulic Connectivity to Project
The watershed flows southwest towards the proposed DSBB device. It intersects with three Caltrans ROW boundaries: Interstate 580, State Route 13, and State Route 185.
All three routes drain towards the south. On Interstate 580, the water exits Caltrans ROW through storm drain pipes at six different points: one on Harold St, two on Suter St, two on Arkansas St, and one on Viola St. On State Route 13, the water exits Caltrans ROW through storm drain pipes at three points on Monterey Blvd. On State Route 185, the water exits Caltrans ROW at three different points: one on 42nd Ave, one on 45th Ave, and one on 46th Ave. An inlet at the intersection of 42nd Ave and State Route 185 within Caltrans ROW is collecting runoff that is not included in the project’s watershed.
Significant Trash Generation Area (STGA) Breakdown
Total Project Watershed Area (ac): 1678.95*
*An additional 0.21 ac of Caltrans ROW not accounted for in the Total Project Watershed Area also drains to the DBSS device.
Watershed Area within Caltrans Right of Way (ac): 74.21 No conflicting projects within catchment area.
STGA Rating Area (ac)
Very High 1.27
High 13.05
Moderate 59.89
Low 0
Unrated 0
Total 74.21
^_
¯
0 3,000 6,000
Feet
45th Ave & San Leandro Exhibit 1
Legend
Caltrans On-System Catchment Areas
Catchment Area
Caltrans ROW
Caltrans Runoff Contribution
(Trash Generation Rating, 2022)
Moderate
High
Very High
^_ DSBB Location
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0 750 1,500
Feet
45th Ave & San Leandro Exhibit 2
Legend
Catchment Area
Caltrans ROW
$+ Caltrans Discharge Points
") Caltrans Inlets
#* Caltrans Outfalls
Caltrans Storm Drain
") City of Oakland Stormdrain Structures
City of Oakland Strom Drain
Caltrans Runoff Contribution
(Trash Generation Rating, 2022)
Moderate
High
Very High
Storm Drain Network
Joaquin Miller Rd
Monterey Blvd
Monterey Blvd
SR-13
SR-13
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0 1,000 2,000
Feet
45th Ave & San Leandro Exhibit 3
Legend
Catchment Area
Caltrans ROW
$+ Caltrans Discharge Points
") Caltrans Inlets
#* Caltrans Outfalls
Caltrans Storm Drain
") City of Oakland Stormdrain Structures
City of Oakland Strom Drain
Caltrans Runoff Contribution
(Trash Generation Rating, 2022)
Moderate
High
Very High
Storm Drain Network
Arkansas St
Suter St
Viola St
I-580
I-580
Harold St
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0 300 600
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45th Ave & San Leandro Exhibit 4
Legend
Catchment Area
Caltrans ROW
$+ Caltrans Discharge Points
") Caltrans Inlets
#* Caltrans Outfalls
Caltrans Storm Drain
") City of Oakland Stormdrain Structures
City of Oakland Strom Drain
Caltrans Runoff Contribution
(Trash Generation Rating, 2022)
Moderate
High
Very High
Storm Drain Network
SR-185
SR-185
45th Ave
42nd Ave
High Street
Candidate Project Findings Memo
47th & UPRR
Project Owner: The City of Oakland
Project Description
This is one of five sites identified for proposed
large trash capture facilities. The proposed
Debris Separating Baffle Box (DSBB) is
located at the intersection of 47th Avenue
and Union Pacific Railroad (UPRR) along
Courtland Creek storm sewer system.
Proposed DSBB Location
Caltrans Hydraulic Connectivity to Project
The watershed flows southwest towards the proposed DSBB device. It intersects with two Caltrans ROW boundaries: Interstate 580, and State Route 185. Both routes drain towards the south. On Interstate 580, the water exits Caltrans ROW through storm drain pipes at two different points on High St. On State Route 185, the water exits Caltrans ROW at three different points: one on 46th Ave, one on 47th Ave, and one on 49th Ave.
An inlet on eastbound side of Interstate 580 within Caltrans ROW is collecting runoff that is not included in the project’s watershed.
Significant Trash Generation Area (STGA) Breakdown
Total Project Watershed Area (ac): 751.51*
*An additional 1.16 ac of Caltrans ROW not accounted for in the Total Project Watershed Area also drains to the DSBB device.
Watershed Area within Caltrans Right of Way (ac): 15.70 There is 1.1 acres of overlap with on-system BMPs within the catchment area.
STGA Rating Area (ac)
Very High 0
High 0
Moderate 15.70
Low 0
Unrated 0
Total 15.70
^_
¯
47th Ave & UPRR Exhibit 1
0 1,000 2,000
Feet
Legend
Caltrans On-System Catchment Areas
Catchment Area
Caltrans ROW
Caltrans Runoff Contribution
(Trash Generation Rating, 2022)
Moderate
^_ DSBB Location
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High St.
I-580
High St.
I-580
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47th Ave & UPRR Exhibit 2
0 440 880
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Legend
Storm Drain Network
Catchment Area
Caltrans ROW
$+ Caltrans Discharge Points
") Caltrans Inlets
#* Caltrans Outfalls
Caltrans Storm Drain
Caltrans Runoff Contribution
(Trash Generation Rating, 2022)
Moderate
") City of Oakland Storm Drain Structures
City of Oakland Storm Drain
Caltrans On System Catchment Areas
^_ DSBB Location
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49th Ave
47th Ave
46th Ave
SR-185
SR-185
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47th Ave & UPRR Exhibit 3
0 440 880
Feet
Legend
Storm Drain Network
Catchment Area
Caltrans ROW
$+ Caltrans Discharge Points
") Caltrans Inlets
#* Caltrans Outfalls
Caltrans Storm Drain
Caltrans Runoff Contribution
(Trash Generation Rating, 2022)
Moderate
") City of Oakland Storm Drain Structures
City of Oakland Storm Drain
^_ DSBB Location
Candidate Project Findings Memo
G & 85th
Project Owner: The City of Oakland
Project Description
This is one of five sites identified for proposed
large trash capture facilities. The proposed
Debris Separating Baffle Box (DSBB) is
located at the intersection of G Street and
85th Avenue.
Proposed DSBB Location
Caltrans Hydraulic Connectivity to Project
The watershed flows southwest towards the proposed DSBB device. It intersects with one Caltrans ROW boundary: State Route 185 between 100th Ave and 85th Ave. The water exits Caltrans ROW through storm drain pipes at 2 different locations: at 88th Ave St and at 94th Ave. It also exits via runoff at 13 locations: at 85th Ave, 86th Ave, 87th Ave, 89th Ave, 90th Ave, 91st Ave, 92nd Ave, 93rd Ave, 95th, 96th Ave, 97th Ave, 98th Ave, and 99th Ave. Water exiting via runoff drain into various storm drain pipes southwest of SR-185 and discharge to the proposed device.
Significant Trash Generation Area (STGA) Breakdown
Total Project Watershed Area (ac): 802.48
Watershed Area within Caltrans Right of Way (ac): 10.6
No conflicting projects within catchment area.
STGA Rating Area (ac)
Very High 0
High 10.6
Moderate 0
Low 0
Unrated 0
Total 10.6
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G St and 85th Exhibit 1
Legend
^_ DSBB Location
Catchment Area
Caltrans ROW
Caltrans On-System Catchment Area
Storm Drain Network
$+ Caltrans Discharge Points
") Caltrans Inlets
#* Caltrans Outfalls
Caltrans Storm Drain
") City of Oakland Storm Drain Structures
City of Oakland Storm Drain
Caltrans Runoff Contribution (Trash Generation Rating, 2022) High
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85th Ave
G St
SR-185