1. Assoc. Engr., Sacramento Dist., California Dept. of Water Resources, Sacramento, Calif.
2. Dist. Engr., San Francisco Bay Dist., California Dept. of Water Resources, Vallejo, Calif.
3. Chf., Evaluation and Reports, water Quality Activities, Basic Data Program, FWPCA, Robert A. Taft San. E ngrg. Center, Cincinnati, Ohio.