Layer Estimates:

Layer: Chattahoochee River (ID:0)
Count: 3
Extent:

XMin: -9402168.8708
YMin: 4005565.7183
XMax: -9359242.5554
YMax: 4050558.2418
Spatial Reference: 102100 (3857)

Layer: Park Boundary (ID:1)
Count: 56
Extent:

XMin: -9402050.3855
YMin: 4010961.1847
XMax: -9358639.4138
YMax: 4050244.3469
Spatial Reference: 102100 (3857)