It looks like the turf removal is going on in steps. Irrigation is the first thing being dealt with. The irrigation system will be hard-piped with fixed water-heads that will spray the water horizontally in a circular motion at strategical plant locations. This is not a drip system. They are also digging a deeper channel around the periphery of the areas so that the chips will tend to stay where they are placed.
Here they have started working at the corner of Meridian Ave and Oakglen Way in Jeffrey Fontana Park.