E Modifying the authority of the public utilities commission to fix rates and methods of depreciation and amortization relating to telephone company property and eliminating the requirement for telephone companies to conform property depreciation accounts to the rates and methods fixed by the PUC; requiring telephone companies to retain data sufficient to determine depreciation accruals and reserves by depreciable telephone plant account, defining depreciable plant account, requiring records relating to depreciation practices to be available for inspection by the PUC; repealing a certain provision subjecting telephone companies to complaints relating to depreciation rates and practices and certain rules (ra, ja)