I see depreciation (<$1000/yr), but i don't see it in the filed documents.
Typically, the 4562 is included in the filed tax return only in the first year, last year of depreciation, and any year there is a change in any asset such as adding, removing or selling an asset.
For SCH C, look at line 13 of the SCH E form. If there's an amount there, depreciation was taken on "something".
For SCH E, look at line 18 of the SCH E. Again, if there's an amount there, then depreciation was taken for "something".
