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These include warehouses which induce truck trips, and thus qualify as indirect sources of air pollution. In 2021, the SCAQMD board voted to authorize the Indirect Source Rule, which requires warehouses larger than 100,000 square feet to take steps to cut pollution, fund similar air pollution mitigation projects, or face penalties.
Ambrosia pumila is a rare species of herbaceous perennial plant known by the common names San Diego ragweed and San Diego ambrosia. It is native to far southern California, Baja California, and Baja California Sur. It grows in floodplains and open grasslands in proximity to wetland areas. [3] [4] [5] [6]
The California Air Pollution Control District Act of 1947 allowed 1 or more counties to form air pollution districts. [5] [6] The California Bay Area Pollution Control Act of 1955 created the Bay Area Air Pollution Control District. [5] [7] The California Mulford-Carrell Air Resources Act of 1967 resulted in the creation of 11 air basins. [5] [8]
Phytoremediation technologies use living plants to clean up soil, air and water contaminated with hazardous contaminants. [1] It is defined as "the use of green plants and the associated microorganisms, along with proper soil amendments and agronomic techniques to either contain, remove or render toxic environmental contaminants harmless". [2]
San Diego County has a high emissions history. Most of their pollution comes from physical plants and cars. The city reported on their decreased emissions from the 1980s to the present. The tracked emissions do not include diesel because of monitoring differences, but the county still oversees 3000+ facilities that emit some sort of air pollution.
The term epiphytic derives from the Greek epi-(meaning 'upon') and phyton (meaning 'plant'). Epiphytic plants are sometimes called "air plants" because they do not root in soil. An epiphyte is a plant that grows harmlessly upon another plant and derives its nutrition and water supply from the air and debris found in its immediate environment.
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Ten schools in the Imperial Valley use green, yellow, and red flags signaling air quality for the many children who have asthma. Green means they join their friends on the playground, whereas red means they stay inside all day. Parents can also receive emailed alerts from the Imperial County Air Pollution Control District. [49]