Mich. Admin. Code R. 460.2541
Current through Vol. 24-21, December 1, 2024
Rule 41. The following records of reserve for depreciation and depletion of utility plant shall be retained for the periods listed:
| (a) Detailed records or analysis sheets that segregate the depreciation reserve according to functional classification of plant. | 25 years. |
| (b) Records that support computation of depreciation and depletion expense of utility plant, including such data as life and salvage studies. | 25 years. |
Mich. Admin. Code R. 460.2541