concurring.

I agree with the majority in all respects, but write to emphasize the importance of SWFWMD’s duty to limit its rule-making power only to the authority conferred on it by the legislature. In exercising this authority, SWFWMD has the obligation to make its rules clear and concise, so that the general public is able to understand what property is subject to their regulations and that the property owner understands his rights and duties under any rules created through this statutory delegation of authority.

I further point out that the dictates of Florida Patient’s Compensation Fund v. Rowe, 472 So.2d 1145 (Fla. 1985), should be considered by the trial judge at any further hearing on attorney’s fees.

James A. Waibel appeals a final judgment in favor of the plaintiff, Southwest Florida Water Management District (SWFWMD). The judgment imposes a mandatory injunction requiring Mr. Waibel to complete a surface water management system and to restore wetlands in accordance with a permit that was issued to him by SWFWMD after he had already begun a project on his property. The judgment also requires Mr. Waibel to pay a $25,000.00 fine, SWFWMD’s attorneys’ fees of $55,-957.25, and costs of $11,450.77. We affirm the judgment, except for the award of fees and costs.

In 1986, Mr. Waibel purchased approximately ten acres of land in Polk County just north of Interstate 4 at the intersection of Tomkow Road and Old Polk City Road. The property had an existing drainage ditch, and at least from Mr. Waibel’s perspective, it was not a wetland. Mr. Waibel decided to excavate a large “fish*233pond” and use the borrowed soil to raise the level of the surrounding property. There is evidence that Mr. Waibel checked with SWFWMD in 1989 and was told that technically he needed a permit for this project, even though many landowners dig fishponds without a permit. Mr. Waibel began his project without obtaining a permit. He declined to stop the project when SWFWMD advised him to stop. SWFWMD then filed this enforcement action.

Mr. Waibel clearly believes that SWFWMD’s decision to pursue this enforcement action is unreasonable, and that his project will not harm the environment. He feels that SWFWMD is intruding upon his private property rights without justification. Although we can understand his feelings, the final judgment is authorized by law and supported by substantial, competent evidence. We affirm the injunction and the fine without additional discussion of his several issues.

The amount of the award of fees and costs, however, is not supported by competent evidence. The trial court relied on an affidavit from a law firm’s bookkeeper, who merely confirmed that certain bills for legal services and costs had been sent to SWFWMD. There is no evidence that these bills were paid by SWFWMD. There is no evidence from any attorney establishing work performed on this case, the necessity of that work, or the reasonable fee for those services. Accordingly, we reverse the award of fees and costs and remand for a hearing to establish those amounts.

Affirmed in part, reversed in part, and remanded.