| 6. Reasonable return. The alternative form of regulation |
| must ensure that the telephone utility has, over the period of |
| the alternative form of regulation, a reasonable opportunity |
| to earn a fair return on the investment necessary to provide |
| local telephone services. The commission shall ensure |
| compliance with the requirements of this subsection in the |
| revenue requirement proceeding and earnings review required by |
| subsection 5. |