Notwithstanding any other provision of this chapter,

Chapter 2 (commencing with

Section 12639), or

Chapter 3 (commencing with

Section 12800), the following requirements apply to projects authorized by the Legislature on or after January 1, 2002, and to small flood management projects authorized by

Section for which the department makes the findings required by

Section 12750.1 on or after January 1, 2002. (

a) The state shall pay percent of the nonfederal capital costs required by

Section of Title of the United States Code. (

b) The state shall pay percent of the nonfederal capital costs of fish, wildlife, and recreation mitigation. (

c) The state shall pay percent of the nonfederal planning and engineering costs required by

Section 2215(

b) of Title of the United States Code and the nonfederal design costs required by

Section 2215(

c) of Title of the United States Code. (

d) The state share of the nonfederal capital costs authorized in subdivisions (a), (b), and (

c) may be increased by up to an additional percent, to a maximum of percent, upon the recommendation of the department or the Central Valley Flood Protection Board, if either entity determines that the project will result in a significant contribution to any of the following objectives:

(1) Protects, creates, enhances, or provides opportunities for enhancement of endangered species, riparian, aquatic, terrestrial, or other important habitats.

(2) Protects or enhances open space.

(3) Develops or enhances recreational opportunities that include, but shall not be limited to, picnic areas, foot and bike paths, and provides public access to all or nearly all of the project works, except those areas where public access would constitute a threat to public safety or habitat or would constitute a trespass on private property.

(4) Increases the level of flood protection for disadvantaged communities, as defined in

Section 79505.5.

(5) Increases the level of flood protection for state transportation facilities or state water supply facilities. (e)

(1) The department or Central Valley Flood Protection Board shall include their recommendations with regard to increased cost sharing in the report prepared pursuant to subdivision (

b) of

Section 12582.7, if so prepared, or in any addendum to that report.

(2) The department or Central Valley Flood Protection Board shall determine whether the project will result in a significant contribution to the prescribed objectives based upon substantial evidence in the record. The department shall develop, by regulation pursuant to

Section 12601, criteria for making the determinations as to whether projects will make significant contributions to the objectives described in subdivision (d). (

f) The state payments under subdivisions (

a) and (

b) are subject to

Section 12585.1. State payments under subdivision (

c) are not subject to

Section 12585.1.