1 Pitchers must throw a pitch within 20 seconds of receiving the ball. 2  Clocks posted in each dugout will count down the 20 seconds. 3  There will be a maximum break between innings of 2:05, with a clock keeping track. 4  Hitters must be in the batter's box by 1:45. 5  If the hitter's not ready, the umpire can call a strike. If the pitcher doesn't throw a pitch by 2:05, the umpire can call a ball. 2  Teams will have a maximum of 2:30 to change pitchers, with the clock starting as soon as the reliever enters the playing field. 3  Teams are limited to a maximum of three mound visits per game, not including pitching changes.
The Clean Air Act, originally passed in 1973 and amended in 1990, is a United States federal law designed to protect human health and the environment from the effects of air pollution.
The 1955 Air Pollution Control Act was the first federal legislation involving air pollution; it authorized $3 million per year to the U.S. Public Health Service for five years to fund federal level air pollution research, air pollution control research, and technical and training assistance to the states.his title pre-dates the Clean Air Act. With the passage of the Clean Air Act, it became codified as Title IV. However, another Title IV was enacted in the 1970 amendments. The second Title IV was then appended to this Title IV as Title IV-A (see below).