The first round of state claims filed with the federal bankruptcy court in San Francisco cover the cost of energy purchases made by the Department of Water Resources for PG&E customers from the time PG&E filed bankruptcy on April 6, 2001 to May 31, 2001 that PG&E had not already paid to DWR. The claim will be amended to reflect the exact amount owed by PG&E once final information is obtained from the California Independent System Operator. The Attorney General expressed concerns that PG&E's bankruptcy reorganization plan seeks to shift from state to federal regulatory oversight of its activities. PG&E earlier had used California PUC oversight as a shield against federal scrutiny. Lockyer already has challenged PG&E's claim that it should be exempted from federal Securities and Exchange Commission review for the transfer of billions of dollars by its parent corporation, PG&E Corp., for potential holding company abuses in the transfer of billions of dollars from its now bankrupt California subsidiary.