The concentration is calculated on the volume of water that is in the well. The concentration must be at least 200 milligrams of chlorine per litre of water present in the well and must be left in the well for at least 12 hours to ensure any bacteria present are.
idles; idled; idling. Learner's definition of IDLE. 1. of an engine or vehicle: to run without being connected for doing useful work. [no object]. She left the engine idling for a few seconds before she turned it off. The cars idled in traffic.
ASE MEDIUM/HEAVY COMPOSITE VEHICLE TYPE 3 REFERENCE BOOKLET PAGE 12. Idle Shutdown Timer (IST) The idle shutdown feature reduces the amount of fuel burned and increases engine life by. shutting down the engine after a period of engine idling with no driver activity.