¿Qué significa A warning in '09 for over limit of lines. ?

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I need more information (context) to be sure but if I had to guess I would say ‘09 is short for 2009 and that “over limit of lines” has something to do with too many “fishing lines”.

So maybe it is about Fish & Game warning people in 2009 about using too many fishing lines at the same time.

If you think about it, this makes sense. If a person went fishing alone and used 10 fishing lines at the same time they could catch too many fish which is bad for the fish population and unfair for other fishermen.

EDIT: I found this in a government document.

“Late at night a fisherman was observed with an over limit of lines in the water. The fisherman stated that some of the lines were his and the others belonged to his friend that just went inside the cottage to go to the bathroom.”

So I think my answer is correct. There are rules for not having too many fishing lines at the same time.