Every load has to be one clean material. Concrete, or asphalt, or brick and pavers. Not two of them together, and nothing else mixed through it.
This is not us being fussy. Clean, single-material loads go to a recycling facility, where the material gets crushed and used again. That is what keeps our disposal cost down, and it is the whole reason we can charge $350 plus tax for something this heavy. The moment a load has dirt, trash, or wood mixed into it, it stops being recyclable material and has to be handled a completely different way.
So the rule is simple. Keep it to one material and keep it clean.

