An appropriation shall be available for encumbrance during the period specified therein, or, if not otherwise limited by law, for three years after the date upon which it first became available for encumbrance. An appropriation containing the term “without regard to fiscal years” shall be available for encumbrance from year to year until expended.
An appropriation shall be deemed to be encumbered at the time and to the extent that a valid obligation against the appropriation is created.
As used in this code and in every other statute heretofore or hereafter enacted, the term “unexpended balance” shall be construed to mean “unencumbered balance.”
Appropriations for the following purposes are exempt from limitations as to period of availability in any appropriation, and shall remain available from year to year until expended:
16300
16301
16301.3
16301.5
16302
16302.1
16302.2
16302.3
16303
16304
16304.01
16304.1
16304.2
16304.3
16304.5
16304.6
16304.7
16304.8
16304.9
16305
16305.1
16305.2
16305.3
16305.4
16305.5
16305.7
16305.8
16305.9
16306
16307
16308
16309
16310
16311
16312
16312.1
16313
16314
16315
16316
16317
16317.5
16320
16328
16329
16330
16340
16341
16301
16301.3
16301.5
16302
16302.1
16302.2
16302.3
16303
16304
16304.01
16304.1
16304.2
16304.3
16304.5
16304.6
16304.7
16304.8
16304.9
16305
16305.1
16305.2
16305.3
16305.4
16305.5
16305.7
16305.8
16305.9
16306
16307
16308
16309
16310
16311
16312
16312.1
16313
16314
16315
16316
16317
16317.5
16320
16328
16329
16330
16340
16341