Improving Water Quality in the Tijuana River Valley

Project #6: Construct New Infrastructure to Address Trash and Sediment

Overview

This project involves the construction of
infrastructure along the Tijuana River,
Smuggler's Gulch, and Yogurt Canyon to
reduce sediment and trash deposition into
the Tijuana River Estuary. Trash booms and
sediment basins adjacent to or within the
main channel of the Tijuana River and
Smuggler's Gulch (U.S.- or Mexico-side) are
being considered along with flood
mitigation infrastructure in Yogurt Canyon.

Project at a Glance

Trash1

Sediment2

Yogurt
Canyon3

Location of
Operations

Entry Points
Addressed

Targeted
Pollutant(s)

United States and possibly
Mexico

Tijuana River, Cross-Border
Canyons

Trash, Sediment

COST ESTIMATES

Capital

CD
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$ 1M -

50M


oo

Annual O&M4

$ 0.03M -
6M

$ 0.2M -
49 M

LO
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40-year lifecycle

$ 1M —
156M

$ 9M -
1.7B

$ 3.5M

TRANSBOUNDARY TIJUANA RIVER IMPACT5
(Annual Benefit)

Flow day reduction

-

-

-

Flow rate reduction

-

-

-

Sewage reduction6

-

—

-

SAB CREEK IMPACT5
(Annual Benefit)

Reduction in flow rate

-

-

-

Sewage reduction

-

-

-

Will this project increase public health
and beach water quality?

This project will reduce trash and sediment
but is not expected to reduce sewage.

Does this project improve work
conditions for government activities?

Expected improvements to U.S. Navy
personnel training conditions and U.S. Border
Patrol activities are unquantifiable.

BEACH CLOSURE IMPACTS5
(Annual Benefit)

Closure reduction7

LEGEND

1	Trash: Installation of trash booms in the Tijuana River Main Channel
and Smuggler's Gulch

2	Sediment: Strategically placed sediment basins in the US and Mexico

3	Yogurt Canyon: Pilot channel in Yogurt canyon or modification to
Monument Road

4	O&M: Operations and maintenance

5	Impacts are unquantifiable

6	Estimates of sewage reduction are based on the reduction of BOD
(biochemical oxygen demand), a standard surrogate for sewage

7	Beach closure reduction estimates are based on Scripps Institution
of Oceanography models


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NW
Waves
(Winter)

Project 6: Construct New Infrastructure to Address Trash and Sediment

Imperial

San Diego



PACIFIC
OCEAN

South Bay Water
Reclamation International
Plant (SBWRP) Treatment Plant

(ITP)

Trash and
sediment
basin

International

Collector

Northern Current
(Summer)

Pump
Station 1A

UNITED STATES

MEXICO

PB CILA

San Antonio de
Ios Buenos
(SAB) Creek

Tijuana


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