We wrap up the year with Scott C. Carroll, the General Manager of the Costa Mesa, CA Sanitary District (CMSD).  We talk to him about his take on innovation ("If its not broke, break it") and his world of 2s - 2-2 man crews, 2 trucks, 2 tablets and 220 miles of sewer lines.  And, of course, his fondness for getting to edge of the cliff.