Layer Estimates:

Layer: 5' Contours (ID:0)
Count: 75057
Extent:

XMin: -8270091.68205726
YMin: 4854501.63838524
XMax: -8242665.40592027
YMax: 4876314.66766328
Spatial Reference: 102100 (3857)

Layer: 1' Contours (ID:1)
Count: 389579
Extent:

XMin: -8270091.84670053
YMin: 4854499.44021716
XMax: -8242661.7913028
YMax: 4876314.76770728
Spatial Reference: 102100 (3857)