critical level definition
critical level means a level fixed on the basis of scientific knowledge, above which direct adverse effects may occur on some receptors, such as trees, other plants or natural ecosystems but not on humans;
critical level means the C-L or C/L marking on a backflow prevention device or vacuum breaker is a point established by the testing laboratory (usually stamped on the device by the manufacturer) which determines the minimum elevation above the flood level rim of the fixture or receptacle served on which the device may be installed. When a backflow prevention device does not bear a critical level marking, the bottom of the vacuum breaker, combination valve, or of any such approved or listed device shall constitute the critical level.
critical level means the reference point on a vacuum breaker that must be submerged before backflow can occur. When the critical level is not indicated on the vacuum breaker, the bot- tom of the vacuum breaker shall be considered the critical level.
More Definitions of critical level
critical level means a level above which direct adverse effects can occur on some receptors, such as trees, other plants or natural ecosystems but not on humans;
critical level or "CL" means the level to which the vacuum breaker could be submerged before backflow will occur, and if the CL marking is not shown on the vacuum breaker, the bottom of the device is taken as the CL.
critical level means a level fixed on the basis of scien- tific knowledge, above which direct adverse effects may occur on some receptors, such as trees, other plants or natural eco- systems but not on humans;
critical level means a level above which direct adverse effects may occur on some
critical level means a level above which direct adverse effects can occur on some
critical level means a level fixed on the basis of scientific knowledge, above which direct adverse effects may occur on receptors, such as plants, trees or natural ecosystems but excluding humans;
critical level. The term "critical level'' shall mean the C-L or C/L marking of the backflow prevention assembly which is the point established by the testing laboratory and marked by the manufacturer, from which the minimum required elevation above the flood rim of a fixture, receptacle or other use is determined. In the absence of such marking, the lowest part of the assembly shall be deemed to be the critical level.