A former Amador County Administrator and activist for the developmentally disabled has been appointed to a State Council dealing with similar issues on a larger scale. Governor Arnold Schwarzenegger yesterday announced that Kathleen Barnes, 56, of Stockton, has been appointed deputy director for area board operations for the State Council on Developmental Disabilities, or SCDD.  She has worked for SCDD's Area Board 6 since 1991 in various positions, including executive director. Prior to that, Barnes received acclaim as program director for The Arc of Amador and Calaveras Counties from 1985 to 1989 and program manager for the Eden Council for Hope and Opportunity, a Bay Area fair housing assistance agency, from 1984 to 1985. This position does not require Senate confirmation and the compensation is $88,800. Barnes is a Republican.