SAN DIEGO (Border Report) — Whether you call it hydrogen sulfide, H2S, or “sewer gas,” plenty of it is circulating in the Tijuana River Valley.
The compound is created by the high levels of sewage coming in from south of the border via the Tijuana River.
The gas, known to cause respiratory illnesses, is monitored at several stations set up along the Tijuana River by the County of San Diego …