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may cover the dry weather. The real issue is during the wet weather months. If the months are not too wet, then the option of injecting RO water may not be needed. DSRSD has already made a commitment to Zone 7 to minimize the amount of RO injection because of the concerns of the people. He said the goal is to get a project that meets DSRSD needs, as well as what the community will accept. Ms. Michelotti asked if there is a possibility to store the water someplace and take it out in the summertime to use it for irrigation. She felt it was important to try and save the natural resource by using recycled water for irrigation. Mr. Requa said the issue is where would the water be stored and the ability to construct the storage. Ms. Michelotti said the problem would be solved if there was an alternative, if the RO water could be discharged into the creeks during the overflow months. Ms. Ayala asked if this had to be approved by the Alameda County Water District. Mr. Requa said the Alameda County Water District would be an important player as to a decision by the Regional Board whether it would allow a stream discharge. He said the approval has been an ongoing active discussion with the Alameda County Water District. Ms. Michelotti felt it was a viable option that ought to be pursued. Mr. Myers said Zone 7 has been exploring how to handle DSRSD's wastewater disposal needs and still try to find some benefit in terms of water resources for the Valley. This project is not just an economic issue or wastewater disposal issue, but is also recognizing that for the community it has a considerable amount of social values and considerations. Zone 7 and DSRSD have been looking at trying to solve the storage problem by using the groundwater basin. Can a portion of the basin be operated in such a fashion similar to surface storage? Can water be stored for a period of time while a pipeline distribution system is implemented that would establish a secondary water system inside the Valley? Therefore Zone 7/DSRSD would not have to import water to meet the demands of the public and it would be able to meet the concerns that the people have over putting something unsafe into the drinking water supply. He said an alternative may be to bring the water back in and use it for urban irrigation. Urban irrigation is 34 percent of the contribution to the salt balance problem plus from an economic point of view the RO water is being substituted for potable water. There is no such economic value when the water is used for agricultural use. He said the primary goal is to minimize whatever amounts of water get into the potable water supply. On the output side, there are groundwater models which are fairly accurate in predicting the movement of water and how soon it would get to the potable wells. He said one of the options being discussed is, can Zone 7 establish blending facilities on the output and develop facilities to further blend the water so that it is equally distributed among the customers. Pleasanton City Council 17 09/08/98 Minutes