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81 not reflect a noticeable difference (5 % ). He further explained the changes to the quality of water -- that happen throughout the year to the entire city. This well will serve as a back up to the existing wells. Zone 7 limits the mount of groundwater taken. There was discussion regarding the San Francisco Property and how its wells affect the City water supply. Ms. Acosta explained that Dublin has the ability of building its own well. Both cities saw the opportunity to share the cost and to have an annual contribution to Pleasanton's system. Mr. Cusenza stated that Pleasanton will not be using the Tassajara Reservoir for the transition of water to Dublin. However, it is currently being considered to utilize this Reservoir to provide water for the East Dublin project. Mr. Elliott added that the City of Pleasanton has total control as to what this pipeline could be used for. Mr. Roush reiterated the Memorandum of Understanding between the property owners upon which the Reservoir sits and DSRSD concerning DSRSD's potential use of that water. Mr. Roush was asked to give a copy of the MOU to Mr. Pico. Robert Cordtz, 262 W. Angela, read a letter to Council {Zetter was given to Council). He spoke in opposition to this agreement and asked that Council refer this back to staff for further study. He asked what benefit this would give to the citizens of Pleasanton. He was also concerned with the softerring of the water. Ms. Mohr asked what the tradeoffs were to having this well. Mr. Pico felt that there was significant questions and doubts with this agreement. He was concerned with the water quality. Mr. Swift explained that if Pleasanton uses 100% of the groundwater from this new well then Zone 7 will deliver to Dublin from its groundwater basins within Pleasanton through its own system. If Pleasanton delivers some of this water through this new well to Dublin then Zone 7 would not have to deliver much groundwater to Dublin through its system and will deliver it to Pleasanton. When there is no surface water, the cities will use groundwater and the quality of that water is essentially the same because the wells are mostly in the same location. Mr. Cusenza pointed out that the total cost of the Water Department and purchase of water costs approximately $6 to $7 million. Mayor Tarver was concerned with Section 7 of the Agreement. Dublin should be paying for what they use. He was not comfortable with having a time limit on the agreement and the definitions of the non-interruptable supply. He was worried about the legality of the agreement 06/15/93 9