And less than an hour later,,,the criminals are back.

Ttash is stll present, graffiti vandalism is still present, piles of burnt trash still present.
Without any type of consequences for their actions these criminals will continue their same behavior.

Parks and recreation department staff and ACS staff have not solved the problem.

Forward this to the police department.
Nothing has been resolved.

Upon calling this number that you provided it was made very clear to me that the code enforcement division of the city planning department will not address illegal encampments on public property.
This location is part of a publicly owned facility.

Send police.

Their "wellness" has been impacted by their personal decision to injest illegal narcotics.
They have no interest in any "resources" other than cash to purchase more illegal narcotics.
They have ignored the "notice" to vacate

When can we expect parks to "clear" the public right of way?
Nothing has been resolved.

And now that ACS and Parks and recreation department staff have all subsequently departed and the same group of criminals who have been illegally occupying space in this area for months now are back, what will be done?

There has still not been a satisfactory resolution.