At 4" deep just a little shy of 7yds, 6" deep just a little over 10yds. Most tandems are 10+ yds, maybe a few 8's making delivery. Check around, maybe get a neighbor to go in on if load minimums. Outfits like Pioneer may not require load minimums but probable charge a little higher rate per yard or delivery fee. Research recycled materials outfits.
If you get pad busted up and have a way to load, recycler you buy asphalt from may haul away concrete.