$500 fine in NOLA for not wearing a mask

I don’t want to get fined, so what is the rule here? And I am not trying to be dense, but I really would like to know the specifics so that I do not get fined. News articles are way too vague to answer this.

On NOLA’s Covid website, it says “Everyone must wear a mask or face covering when performing activities in public.”

I am a runner and have NOT been wearing a mask when I run (I am very pro mask in general, for the record). I thought when we were exercising outdoors it was ok to go maskless (perhaps that was dense as well). Am I missing a nuance to this rule? Again, I do not want to be fined $500.

Also do you have to wear a mask when walking your dog?

I have never worn a mask when walking outside or walking the dog. As long as people keep their distance, I'm cool. Of course, shopping or going anyplace inside, I always wear a mask.

I don't see why there would be a fine for running outside without a mask.