This print ISBN is the U.S. Federal Government official edition. 40CFR, Parts 53-59, continues coverage of Protection of Environment, Environmental Protection Agency (EPA)--Air Programs. Topics treated include: ambient air monitoring reference and equivalent methods, prior notice of citizen suits, air quality regulations and surveillance, National Volatile Organic Compound Emission Standards for Consumer and Commercial Products, and more. Related items: The Annual CFR Print Subscription 2017 edition can be found here: https://bookstore.gpo.gov/products/code-federal-regulations-subscription-service-2017-paperback-0 CFR Title 40, Protection of Environment publications can be found here: https://bookstore.gpo.gov/catalog/cfr-title-40-protection-environment Environment & Nature Legislation publications can be found here: https://bookstore.gpo.gov/catalog/environment-nature-legislation Environment & Nature publications can be found here: https://bookstore.gpo.gov/catalog/environment-nature

The Code of Federal Regulations is the codification of the general and permanent rules published in the Federal Register by the executive departments and agencies of the Federal Government.

40 CFR Protection of Environment

The main objective of these updated global guidelines is to offer health-based air quality guideline levels, expressed as long-term or short-term concentrations for six key air pollutants: PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide and carbon monoxide. In addition, the guidelines provide interim targets to guide reduction efforts of these pollutants, as well as good practice statements for the management of certain types of PM (i.e., black carbon/elemental carbon, ultrafine particles, particles originating from sand and duststorms). These guidelines are not legally binding standards; however, they provide WHO Member States with an evidence-informed tool, which they can use to inform legislation and policy. Ultimately, the goal of these guidelines is to help reduce levels of air pollutants in order to decrease the enormous health burden resulting from the exposure to air pollution worldwide.