Layer Estimates:

Layer: Grid Quad Labels (ID:335)
Count: 1600
Extent:

XMin: 3224469.74426997
YMin: 10489579.9818821
XMax: 3320472.24420983
YMax: 10589580.9814096
Spatial Reference: 103160 (6578)

Layer: Topo Index Grid (ID:336)
Count: 400
Extent:

XMin: 3224469.74426997
YMin: 10489579.981626
XMax: 3320472.24420983
YMax: 10589580.9814096
Spatial Reference: 103160 (6578)