[TimT]

That concrete appears to have a pretty smooth steel trowel finish. Which works in your favor, and you mentioned the concrete is only a month old so it is really still curing ie water vapor is coming out of it.

The smooth closed surface means the paint did get do penetrate to far below the surface, and the fresh concrete means the finish hasnt been broken by traffic or wear, no nooks or porosity for the paint to seep into..

If a curing agent was used on the concrete even better!! the paint is laying on the curing agent..and easier to get off.

I bet pressure washing will clean that right up..... they shouild pressure wash the whole surface though... the laittane may be removed by localized cleaning, so the whole surface should probably be pressure washed..

did it rain while the concrete was wet? or is that curing compound? or did they use plastic sheeting for the cure?

Yikes four paragraphs about removing paint LOL

Craftsmen are a dying breed...