For each of the following errors in property, plant, and equipment accounts, state an internal control the client could install to prevent the error from occurring and a substantive audit procedure the auditor could use to discover the error.

1. The asset lives used to depreciate equipment are less than reasonable, expected useful lives.

2. Capitalizable assets are routinely expensed as repairs and maintenance, perishable tools, or supplies expense.

3. Construction equipment that is abandoned or traded for replacement equipment is not removed from the accounting records.

4. Depreciation expense for manufacturing operations is charged to administrative expenses.

5. Tools necessary for the maintenance of equipment are stolen by company employees for their personal use.

6. Acquisitions of property are recorded at an improper amount.

7. A loan against existing equipment is not recorded in the accounting records. The cash receipts from the loan never reached the company because they were used for the down payment on a piece of equipment now being used as an operating asset. The equipment is also not recorded in the records.