As of 28 August 2008 , SEPA monitored daily pollution level in 86 of its major cities .
China 's State Environment Protection Agency ( SEPA ) is responsible for measuring the level of air pollution in China .
As of 28 August 2008 , SEPA monitored daily pollution level in 86 of State Environment Protection Agency 's major cities .
China 's State Environment Protection Agency ( SEPA ) is responsible for measuring the level of air pollution in China .