San Diego Region - Sediment Toxicity TMDLs for San Diego Bay Shoreline at Downtown Anchorage and B Street/Broadway Piers

Background

Sediments in San Diego Bay in the vicinity of Downtown Achorage and B Street/Broadway Piers are contaminated with anthropogenic chemicals. In addition, these sites contain a degraded benthic macroinvertebrate community, and samples from these areas have demonstrated toxicity to various marine invertebrate species in laboratory toxicity tests. As a consequence, these sites have been identified as areas of impaired water quality. In response to this contamination, the San Diego Water Board has initiated efforts to develop TMDLs for these sites.

303(d) Listings

San Diego Bay Shoreline, Downtown Anchorage Sediment Toxicity and Benthic Community Effects
San Diego Bay Shoreline, Vicinity of B Street/Broadway Piers Sediment Toxicity and Benthic Community Effects

Toxic Pollutants in Sediment TMDLs for Downtown Anchorage and B Street/Broadway Piers

The proposed TMDLs being developed for each shoreline segment are as follows:

Downtown Anchorage PCBs, PAHs, Chlordane
B Street/Broadway Piers PCBs, PAHs, Zinc

How to Receive Updates on the Sediment Toxicity TMDLs for Downtown Anchorage and B Street/Broadway Piers

The San Diego Water Board would like to keep interested persons fully informed during the development and approval process for the Sediment Toxicity TMDLs for Downtown Anchorage and B Street/Broadway Piers, including approval by the State Water Board, the OAL, and the USEPA. Updates on the TMDLs will only be sent to persons that specifically request this information. To receive updates from the San Diego Water Board, you must either: 1) subscribe to our electronic mailing list; or 2) send an email request to the contact person listed below to have information sent to you via U. S. Mail. You may also obtain information from our website or by appointment at the San Diego Water Board office.

Stakeholder Outreach

Public Workshop and CEQA Scoping Meeting - January 10, 2013

Stakeholder Meeting – November 19, 2012

Public Workshop for Phase I Results - May 13, 2004

Public Workshop and CEQA Scoping Meeting - April 21, 2003

Scientific Studies and Reports

Technical Report: PAH Transport Study - October 2017

Phase I Final Report – Sediment Quality Assessment Study at B Street/Broadway Piers, Downtown Anchorage, and Switzer Creek – March 2004

Phase II Final Report – Temporal Variability, Causes of Impacts, and Likely Sources of Contaminants of Concern at B Street/Broadway Piers, Downtown Anchorage, and Switzer Creek – June 2005 (Includes Toxicity Identification Evaluation)

Watershed Modeling for Simulation of Loadings to San Diego Bay

Receiving Water Model Configuration and Evaluation for the San Diego Bay Toxic Pollutants TMDLs – June 2008

For More Information

Any questions or comments regarding the Downtown Anchorage and B Street/Broadway Piers Sediment Toxicity TMDLs Project may be directed to Ms. Cynthia Gorham at 619-521-3921, or email at Cynthia.Gorham@waterboards.ca.gov.