USEPA Emissions Measurement Center – Contains promulgated test methods and CEMS performance specifications, as well as information and guidance on test methods and CEMS.
EPA’s Clean Air Markets – Includes market-based regulatory programs designed to improve air quality. Contents include the Acid Rain Program, OTC Budget Trading Program, and proposed Clear Skies legislation.
ActiveSet.org – A National directory of source emissions testing firms, equipment, etc.
Downloadable CFR Titles – Site where you can download updated CFR sections and titles
EPA’s Office of Air and Radiation Policy and Guidance – Provides access to rules, policies, and guidance produced by USEPA Office of Air and Radiation. Also contains recent rule changes as well as proposed changes and updates to regulations.
Tropical Storm Prediction Center/National Hurricane Center – Up to date information regarding tropical storms and hurricanes.
Air & Waste Management Association – The Air & Waste Management Association (A & WMA) is a nonprofit, nonpartisan professional organization that provides training, information, and networking opportunities to more than 9000 environmental professionals in 65 countries. The Association’s goals are to strengthen the environmental profession, expand scientific and technological responses to environmental concerns, and assist professionals in critical environmental decision making to benefit society.
|GPH =||GPM x .006 x PPM|
|% Conc. X S.G.|
|LPH =||M³/h x mg/l x 0.1|
|% Conc. X S.G.|
|m³/h||GPM =||Flow to be treated|
|mg/l||PPM =||Dosage required|
|% Conc.||% Conc. =||Concentration of chemical in pumped solution- Use full number (15% solution is  in formula not (.15))|
|S.G.||S.G. =||Specific gravity at pumped solution|
|GPM x 1440 = GPD||GPD x 6.944 x 10⁴ = GPM|
|liter x 1.0 x 10³ = cm³||Gal. (H²O) x 8.337 = pound (H²O)|
|GPM x 227.1 = l/h||l/h x 4.403 x 10³ – GPM|
|l/m x 5.886 x 10⁴ = ft³/sec.||GPM x 2.228 x 10³ = ft³/sec.|
|Gal. x 3.785 = liter||liter x 2.642 x 10¹ = Gal|