pre-tax salary of the wildland firefighter. IV Cultural Change in Agencies 401. Mandatory use of existing authorities Not later than 3 years after the date of enactment of this Act, with respect to each unit of public lands and each unit of the National Forest System that contains land described in section 102(5), the Secretary concerned shall use not fewer than 1 of the following streamlined authorities for environmental review: (1) Section 603(a) of the Healthy Forests Restoration Act of 2003 ( 16 U.S.C. 6591b(a) ). (2) Section 605(a) of the Healthy Forests Restoration Act of 2003 ( 16 U.S.C. 6591d(a) ). (3) Section 606(b) of the Healthy Forests Restoration Act of 2003 ( 16 U.S.C. 6591e(b) ). (4) Section 40806(b) of the Infrastructure Investment and Jobs Act ( 16 U.S.C. 6592b(b) ). (5) Section 40807 of the Infrastructure Investment and Jobs Act ( 16 U.S.C. 6592c ). (6) Section 207 of the Wildfire Suppression Funding and Forest Management Activities Act ( 16 U.S.C. 6591c note