"EPA must designate areas as attaining or not attaining federal air health standards for ozone. This process is accomplished through a federal rule, with final designations published in the Federal Register ... EPA issued final designations on April 15, 2004. The designations will be used by state, tribal, and local governments to establish control programs to reduce ozone-forming pollution"--Basic information file.
Plný text je přístupný pouze z počítačů Ostravské univerzity
Mode of access: Internet via the EPA web site. Address of of 10/08/008: http://www.epa.gov/ozonedesignations/; current access available via PURL.
Description based on: Mar. 12th, 2008 update; title from title screen (viewed Oct. 8, 2008).