Layer Estimates:

Layer: Parks (ID:0)
Count: 70
Extent:

XMin: -10354507.918138
YMin: 2006281.57578371
XMax: -7186423.01486331
YMax: 4584126.90816052
Spatial Reference: 102100 (3857)

Layer: Tracts (ID:1)
Count: 70482
Extent:

XMin: -10354507.9071174
YMin: 2006281.57578371
XMax: -7186423.00339739
YMax: 4584126.90816052
Spatial Reference: 102100 (3857)