In 2006, the country's Ministry for Environmental Protection launched a nationwide soil-pollution survey, which was to have been concluded in 2010.

WSJ: Cadmium-Tainted Rice Found in Guangzhou

Farms are encouraged to volunteer for a federal EPA survey of air pollution in exchange for partial immunity from prosecution for infractions.

FORBES: Magazine Article

To get through the application process local astronomers conducted a survey to assess the levels of light pollution, and lighting engineers audited the existing external lighting in the national park.

BBC: Brecon Beacons National Park wins dark sky status