Why is the initial cut off level for thc 50 ng/ml, but 100 ng/ml for employment screening in Hawaii?

Question

Why are people in Hawaii able to have more thc in their system (100 ng/ml vs. 50 ng/ml) when they are screened for employment ? If this was a law passed by the state, why is it permitted by the federal government while they deny the ability of the states to permit medical marijuana?

Answer 1

Some areas (Like those where hemp was once grown to support war efforts in WWII) have had difficulty eradicating the crop from the wild despite spraying. Many times the fields have to be burned. In some places in Arkansas. Mississippi, and some tropical areas where it once and still does grow wild they have to raise the level allowed for employment because of the possibility of "environmental exposure". Now typically a state can set the limit of a drug LOWER than the limits allowed federally, but not HIGHER, unless there is just cause and the federal statute has exceptions.
With newer pesticides and herbicides many of these states "exceptions" are disappearing.

Answer 2

The Federal government will establsh one particular level. States cannot impose a lower level, but they can impose a higher level. Just like DWI or DUI. There is a Federal standard, but some states have imposed stricker requirements.

Answer 3

I like number 2.

Answer 4

What is Georgia's level