Pollution prevention practices include low impact development techniques, installation of green roofs and improved chemical handling (. management of motor fuels & oil, fertilizers and pesticides). Runoff mitigation systems include basin infiltration basins, bio retention systems, constructed wetlands, retention basins and similar devices. Thermal pollution from runoff can be controlled by storm water management facilities that absorb the runoff or direct it into groundwater, such as bio retention systems and infiltration basins. Retention basins tend to be less effective at reducing temperature, as the water may be heated by the sun before being discharged to a receiving stream