TY - JOUR AU - Warnert, Jeannette E. TI - Sun setting on water quality exemptions JF - California Agriculture JO - Calif Agr Y1 - 2002/09/01 VL - 56 IS - 5 SP - 148 EP - 149 PB - University of California Agriculture and Nature Resources SN - 0008-0845 UR - http://www.ucanr.edu/sites/calagjournal/archive/?article=ca.v056n05p148b AB -