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Mr. Wong indicated it was to install membrane filtration instead of the conventiotral treatment processes. That would remove organic compounds from the Delta water and provide better filtration of bromides and disinfection byproducts. This is similar to reverse osmosis, but is more an ultra filtration or micro filtration. Not as much pressure is needed to push the water the filter and it will not remove salts. Ms. Ayala expressed concerns about the Delta water and the filtration processes. Mr. Wong stated Zone 7 is meeting all the state and federal requirements and the water quality, in terms of safety, is the best available in the nation and the world. Ms. Ayala referred to a leiler from DSRSD objecting to the connection fees. Mr. Wong said them was a concern about Zone 7 having to pay for conveyance through the South Bay Aqueduct and not being able to use it all and to be able to maintain water levels in Lake Del Valle. That is an issue for Zone 7 with the Department of Water Resources. There is a cost associated ~vith water supply and Zone 7 is expected to pay that because it wants to add an additional capacity to the South Bay Aqueduct. Ms. Dennis believed it was very important to preserve the water level at Lake Del Valle. She was glad Zone 7 was budgeting for that. Ms. Ayala supported the lbes and pointed out that these are for new connections. She inquired about flood control issues and if Zone 7 was making improvements in that area. Mr. Wong said a major update to the flood control master program is under development. The study will be expensive. A request lhr proposal will be issued soon and results from that would be available in Spring 2001. An updated drainage fee progrmn should be ready in eighteen months. Ms. Michelotti asked if Zone 7 was including retention basins north of Pleasanton. She was happy that plans are being implemented to preserve Lake Del Vaile. Mr. Wong said yes. Ms. Michelotti indicated this increase in connection fees will affect the cost of housing in the area. She asked staff to explain what alternatives, if any, when fees like this are adopted by other agencies over which the City has no control. Mr. Casenza stated the City has a contract with Zone 7. which is the Valley's major water wholesaler. The City Ms no choice in setilng their fees. When the City has a change of use which requires additional water supplies, it must pay the fees as well. Ms. Den~s asked if the proposed surplus was probable. If so, would there be a public process to determine the distribution of the surplus. Plcasanton City Cotmcil 5 07/18/00 Minutes