(2) Except for activity
authorized under §761.30(j), research and development (R and D)
into PCB disposal methods using a total of less than 500 pounds
of PCB material (regardless of PCB concentration) will be
reviewed and approved by the appropriate EPA Regional
Administrator and research and development using 500 pounds or
more of PCB material (regardless of PCB concentration) will be
reviewed by the approval authorities set out in §§761.60(e) and
761.70(a) and (b).
(Sec. 6, Pub. L. 94-469, 90 Stat. 2020 (15 U.S.C.2605)