a) Provide the following information for the utility's tree trimming program:

1. 1) Tree trimming expense for the test year and three previous years;

2. 2) The utility's policy regarding tree trimming cycle; and

   1. 3) The percent of the distribution system that has a tree trimming cycle in excess of the policy indicated in subsection (a)(2).
3. b) Provide the distribution substation maintenance expense for the test year and five previous years.
4. c) Provide the maintenance expense for the test year and five previous years for all distribution equipment other than distribution substations.