Declares that, for purposes of chapter 90.82 RCW, WRIA 29 shall be divided such that the portion of the WRIA located entirely within the White Salmon subbasin and the subbasins east thereof shall be considered WRIA 29b and the remaining portion shall be considered WRIA 29a. Planning may be conducted separately for WRIA 29a and 29b. WRIA 29a shall be eligible for one-half of the funding available for a single WRIA and WRIA 29b shall be eligible for one-half of the funding available for a single WRIA.