Layer Estimates:

Layer: Gravel Stockpile (ID:0)
Count: 19
Extent:

XMin: -17811118.5269238
YMin: -15538711.0963092
XMax: 19381393.1103722
YMax: 15538711.0963092
Spatial Reference: 102100 (3857)

Layer: Gravel Stockpile Area (ID:1)
Count: 3
Extent:

XMin: -17811118.5269238
YMin: -15538711.0963092
XMax: 19354644.967036
YMax: 15538711.0963092
Spatial Reference: 102100 (3857)