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Observations From Speaker Presentation

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Posted: Friday, May 3, 2019 10:09 am

Today, I attended a speaker engagement at the Tijuana Estuary conference room on coastal water transport of pollution, facilitated by Sarah Giddings, PhD., University of California San Diego Scripps Institute of Oceanography.

This is the third tine I have viewed presentations of this subject by Dr. Giddings, and they get more detailed and informative with the progression of time, as more data is interpreted in all of their modeling schemes. Basically, a brief summary will highlight the findings of the Scripps dye testing of the coastline in the South Bay, which models the transport of water due to tides, winds, nearshore ocean currents and other factors, such as stratification (thermal gradient) of the immediate ocean waters of the coast, that dictate where and how water, and thus pollution, are transported along our coastline. There are three major areas of concern as “point sources” of pollution into our river, estuary and south county coastline. They are the sewage treatment plant at Punta Las Banderas, 6 miles south of the border, right on the coast; the Tijuana River/Pacific Ocean Interface; and the South Bay offshore outfall.

One final point that I am very pleased to report to you, is that Dr. Giddings is also piloting another component to all of this and that is the presence of aerosol emanation being detected in the air from the dye. This is significant for several reasons. It shows what I have always said, that raw sewage and toxic chemical contamination emissions into the air from the water can and should be tested in real time to give the total picture of imminent impacts to unhealthful conditions that exist from this crisis.

It is always an honor to attend one of Dr. Giddings’ presentations.

Again, thank you

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