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DIRECTORS DEWEY GEORGE JOSEPH bONDERO JACK H.TONE JACK LAVEN ZZANO . RICHARD LI KINS BETTY L MiCNEAR ROGER M...yUCKINS EDWARD STEFFANI STOCKTON EAST WATER DISTRICT JOHNW.LNIANAOHN S OVALL GENERAL OUNSEL 6767 EAST MAIN STREET P.O. BOX 5157 STOCKTON,-CA 95205-0157 209/948-0333 April 28, 1989 RECEIVED Wylla Satterness, Associate Planner MAY 1 1989 San Joaquin County Planning Division 1810 East Hazelton Avenue SAN JOAQUIN COUNT Y Post office Box 1810 PLANNINGDIVISION Stockton, CA 95201 Subject: Application No. GP-89-6/ZR-89-9 Dear Ms. Satterness: I am writing to comment on the subject project General Plan Map Amendment from Agriculture to Rural Residential. The discussion on water should include the following statements: The State of California has determined the City of Stockton and surrounding agricultural groundwater basin to be critically overdrafted. SEWD was created in 1971 by the State Legislature upon the finding that, "The water supplies in the underground basin in the area of the SEWD are insufficient to meet the water demands of the area, and, because of the geologic conditions peculiar to the area and because excessive pumping has seriously depleted the underground water storage, there has been an intrusion of saline waters into the underground water basin causing serious water quality deterioration and the destruction of the usefulness of a portion of the underground water basin. Further excessive pumping, without proper management of the underground water basin and the provision of supplemental water supplies is certain to destroy the usefulness of a major portion of the underground water basin and endanger the health and welfare of the district". . In 1978, SEWD began providing a nominal 20,000 acre feet annually of treated surface water for urban area use. . The average annual overdraft of the Eastern San Joaquin County groundwater basin was determined to be , approximately 70,000 acre feet in 1985. (Report by Brown & Caldwell, consulting engineers) . The annual overdraft is projected to be at least 200,000 acre feet by the year 2020 if no additional surface water is obtained, and saline water is projected to intrude further east, under the western portion of the current urban area.