Layer Estimates:

Layer: Allegheny County Rivers (ID:0)
Count: 4
Extent:

XMin: -8931181.4141
YMin: 4894225.0249
XMax: -8870913.125
YMax: 4963736.2813
Spatial Reference: 102100 (3857)

Layer: Allegheny County MHI (ID:1)
Count: 1062
Extent:

XMin: -8945723.94216758
YMin: 4894216.69700586
XMax: -8870936.47556994
YMax: 4964513.41979762
Spatial Reference: 102100 (3857)