The total amount of fees collected by the south coast district in any fiscal year shall not exceed the amount of fees collected by the district in the 1993–94 fiscal year, except that the amount may be adjusted annually in the 1994–95 fiscal year and subsequent fiscal years to reflect any increase in the California Consumer Price Index for the preceding calendar year, from January 1 of the prior year to January 1 of the current year, as determined by the Department of Industrial Relations. This limitation shall not affect or limit the fees which may be imposed and collected pursuant to a state or a federal mandate imposed on or after January 1, 1994.