; or (B) for positions in law enforcement. (2) The remoteness of the area or location involved. (3) The undesirability of the working conditions or the nature of the work involved, including exposure to toxic substances or other occupational hazards. (4) Any other circumstance that the Secretary considers appropriate. (d) Maximum special rate of pay (1) In general A minimum rate of pay established for the position of law enforcement officer under subsection (b) may not exceed the maximum rate of basic pay (excluding any locality-based comparability payment under section 5304 of title 5, United States Code, or similar provision of law) for that position without the authority of subsection (b) by more than 30 percent. (2) Additional limitation No rate of pay may be established under subsection (b) in excess of the rate of basic pay payable for level IV of the Executive Schedule under section 5315 of title 5, United States Code. (e) Notification of removal from special rate of pay If the Secretary removes the position of law enforcement officer from coverage under a rate of pay established under subsection (b) after that rate of pay takes effect— (1) the Secretary shall provide notice of the loss of coverage of the rate of pay to each individual in that position; and (2) the loss of coverage shall take effect on the first day of the first pay period after the date of the notice. (f) Revision of special rates of pay (1) In general Subject to the limitations described in this section, rates of pay established under subsection (b) may be revised from time to time by the Secretary. (2) Effect Any revision by the Secretary under paragraph (1) shall have the force and effect of law. (g) Regulations The Secretary shall promulgate, and revise annually, regulations to carry out this section, which shall, to the maximum extent practicable, be comparable to the regulations promulgated to carry out section 5305 of title 5, United States Code.