The phrase "acceptable levels and" is correct and usable in written English.
It can be used when discussing standards, thresholds, or criteria that are deemed satisfactory in a particular context.
Example: "The project must adhere to acceptable levels and guidelines set forth by the regulatory body."
Alternatives: "satisfactory standards" or "permissible limits".
In the Romanian section of the Tisza, heavy metal levels had fallen substantially, but zinc was still up nine times higher than the acceptable levels, and lead was almost twice the acceptable limit, Mr. Tomescu said.
But that stockroom rebalancing appears to have restored inventories to acceptable levels and probably will not drive much more business spending growth later in the year.
On Friday, First Deputy Prime Minister Viktor Zubkov said the methane concentration in the mine "exceeds all acceptable levels," and said it would take at least a week to douse fires that are still raging underground.
Properly concreted well-shafts do not leak; regurgitants can be collected and made safe; preventing gas venting and flaring would limit methane emissions to acceptable levels; and the risk of tremors, which commonly occur as a result of conventional oil-and-gas activities, can be contained by careful monitoring.
DEW with dispersed manganese dioxide, showed an ability to lower the fluoride concentration to acceptable levels and improved the defluoridation efficiency of unmodified DEW.
Only late in the business downturn do production cuts get big enough to return inventories to acceptable levels and allow for economic recovery.
The goals should be to reduce pain to an acceptable level and to learn how not to make it worse.
There was no standard for an acceptable level, and most cities did not measure them.
HENDRIK HERTZBERG: If casualties can be kept at an "acceptable" level and the economy is on the upswing, then it'll be a sidebar.
After Malaysia helped Indonesian authorities extinguish the fires, air quality reached an acceptable level, and on August 13 the state of emergency was lifted.
I went into the kitchen, downed a tumbler full of scotch, before refilling the glass to a more acceptable level and going off to the living room to rejoin the rest of the family.
