Two South Florida Water Management District board members resigned Friday, the day after Gov. Ron DeSantis asked all eight to step down immediately.

More: Gov. asks all SFWMD board members to resign

Dan O'Keefe and Carlos Diaz resigned from their unpaid appointments, leaving six members on the nine-member board, including four who have publicly said they refuse to resign and one who resigned before DeSantis' request.

More:Mast blasts board members who won't resign

O'Keefe, a former board chair and Orlando attorney, was appointed to serve until March 2020, representing Polk, Glades, Orange, Osceola, Highlands and Okeechobee counties. Diaz, who co-founded multiple software companies, was appointed — but never confirmed by the Senate — to serve until March 2022, representing Broward County.

O'Keefe's letter references two controversial votes that prompted DeSantis to want to clean house. On Nov. 8, the board voted to:

Lease land needed for the EAA reservoir to Florida Crystals subsidiary New Hope Sugar Co. — after DeSantis asked them to give him time to vet the surprise deal.

Ask a court to release the district from federal oversight on cleaning polluted water draining into Everglades National Park, most of it off farmland.

"While I did not vote for the ... lease ... or the motion to dismiss the 1988 federal lawsuit, I understand your desire to have your own appointees on the SFWMD board," he wrote.

More:Enviros want SFWMD to cancel sugar land lease

Diaz stopped short of echoing critics' concerns the resignations could delay projects.

“It is my hope that the new administration, along with the team at the SFWMD, will continue to drive initiatives such as Everglades restoration, water supply, water quality improvement and flood protection,” he wrote.

Their resignations leave Chair Federico Fernandez and Rick Barber, who have not resigned nor commented publicly on their plans, and Brandon Tucker, Jim Moran, Jaime Wesinger and Sam Accursio, who last week announced they will not quit.

Melanie Peterson, a Wellington Realtor, quit effective Jan. 1, before DeSantis' call for resignations, saying she wanted to spend more time focusing on her work.

Former Gov. Rick Scott appointed all nine board members.