Layer Estimates:

Layer: SanDiegoRivers (ID:0)
Count: 816
Extent:

XMin: -13055799.1556005
YMin: 3834863.44217535
XMax: -13001216.4365532
YMax: 3902995.38658477
Spatial Reference: 102100 (3857)

Layer: SanDiegoParcels (ID:1)
Count: 962
Extent:

XMin: -13040140.8080007
YMin: 3864233.57472832
XMax: -13037072.4268796
YMax: 3867205.99653093
Spatial Reference: 102100 (3857)

Layer: SanDiegoCensusTracts (ID:2)
Count: 628
Extent:

XMin: -13090788.5103237
YMin: 3833632.95430621
XMax: -12922071.1316045
YMax: 3962531.04870776
Spatial Reference: 102100 (3857)