Layer Estimates:

Layer: coal_surface_poly (ID:0)
Count: 13679
Extent:

XMin: -8963387.5306
YMin: 4825400.6496
XMax: -8398577.4805
YMax: 5147443.3762
Spatial Reference: 102100 (3857)

Layer: Spatial_join_sites_poly (ID:1)
Count: 13951
Extent:

XMin: -8963381.5431
YMin: 4825396.6802
XMax: -8398411.1018
YMax: 5147657.2168
Spatial Reference: 102100 (3857)