by Judy Keen The 58-page report issued Thursday by Whitewater special counsel Robert Fiske is only the first chapter of inquiries into the Whitewater affair: In about 10 days, Fiske will report on the handling of Whitewater-related documents taken from former White House aide Vincent Foster's office after his July 1993 suicide. The White House, the Treasury Department's inspector general and the Office of Government Ethics all will now probe contacts between White House and Treasury officials. Fiske turned up "more than 20 different contacts" about regulators' probe of Madison Guaranty, the failed Arkansas thrift owned by the Clintons' Whitewater partner, Jim McDougal. The White House previously acknowledged fewer contacts. "While some of these contacts may have been inadvisable in hindsight, in our view they violated no law," says White House counsel Lloyd Cutler. House banking committee hearings begin July 26; Senate hearings may start July 29. Cutler says the White House will cooperate and "work out a way" for President Clinton and Hillary Rodham Clinton to provide information. The hearings will focus on Foster's death, the handling of his documents afterward and the White House-Treasury contacts. Fiske is weeks away from finishing Little Rock-based explorations of the Clintons' Whitewater land dealings and relationship with Madison Guaranty. "Only the smallest part of that total inquiry has any kind of peripheral relationship to the Clintons," Cutler says.