Layer Estimates:

Layer: Topo_2006Elevations (ID:0)
Count: 279455
Extent:

XMin: -8511176.05133331
YMin: 4428288.7155466
XMax: -8490306.06592045
YMax: 4456334.41286746
Spatial Reference: 102100 (3857)

Layer: Topo_2012_LiDAR_Contours1ft (ID:1)
Count: 146428
Extent:

XMin: -8510795.27325745
YMin: 4437363.17766086
XMax: -8490344.36915037
YMax: 4454926.11307444
Spatial Reference: 102100 (3857)