The Congress finds the following:
(1)
Parking lots, dark-colored rooftops, and lack of tree canopy in urban areas causes the “heat island” effect, wherein urban areas are significantly hotter than surrounding rural areas due to solar heat being collected by components of the built environment.
(2)
According to the EPA, this heat island effect can raise afternoon-to-evening temperatures of urban areas by up to 22 degrees Fahrenheit compared to surrounding rural areas.
(3)
Higher air temperatures in urban areas lead to higher levels of ground level ozone pollution, commonly known as smog.
(4)
In hot weather, each additional degree Celsius in heat causes approximately a 5-percent increase in smog pollution, according to Lawrence Berkley National Laboratory studies.
(5)
Negative health impacts of smog include increased incidence of asthma, throat irritation, scarring of lung tissue, emphysema, and premature death.
(6)
The urban heat island effect increases electricity demand associated with air-conditioning; conversely, heat island mitigation through increased tree canopy can reduce air-conditioning costs by up to 50 percent, creating potential cost savings through lower Federal energy bills.
(7)
According to the Lawrence Berkley National Laboratory, the urban heat island is responsible for 10 to 15 percent of peak electric demand, so mitigating the urban heat island effect will improve the reliability of the power grid by reducing peak demand.
(8)
Urban heat island temperatures can be lowered by increasing tree canopy and by using paving and roofing materials with higher solar reflectivity.
(9)
Many metropolitan regions that include substantial Federal property, including the National Capital Region, fail to meet air quality standards for ozone.