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

Beijing ranks second worst out of 31 mainland cities for air pollution in a survey based on government data by Friends of Nature, a non-governmental green group, The Beijing News reveals.

BBC: China media: Analysing North Korea

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

The Beijing News urges the environment ministry to stop treating pollution data as "state secrets" after it turned down requests to release the findings of a survey into groundwater contamination in 200 cities across the country.

BBC: China media: Egypt accident anger