Air district issues odor advisory weeks after developing air quality system
Just weeks after unveiling a new odor alert system, the San Diego County Air Pollution Control District on Monday issued an advisory warning that levels of sewer gases above state thresholds were detected near the Tijuana River Valley. The district’s air monitoring equipment in Nestor recorded concentrations of hydrogen sulfide, a toxic gas that smells like rotten eggs, above the state standard of 30 parts per billion (ppb). The limit, which is intended to protect against headaches and nausea, is also designed to protect sensitive groups, such as children, older adults and people with certain health conditions. Communities including Nestor, Imperial Beach, San Ysidro and surrounding areas have reported feeling ill after smelling sewer gas odors due to untreated wastewater that spills over the border from Tijuana.
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