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concerns about the statement that RO "should" remove pathogens and viruses. She said when in doubt don't do it. Therefore don't put something in the water that is so unreliable. There being no further speakers, the public hearing was closed. Ms. Dennis asked if you have to use sewer effluent in the plant for the RO process. Mr. Requa understood Ms. Dennis's question to be could the RO facilities be used for water that has not been treated. He said it is possible. He said the station is being constructed because of the wastewater capacity issue. The goal is to minimize the amount of RO injected into the groundwater. The use of the facility could be used to remove the salt from the irrigation water before it is applied to the ground. He said the issue is that DSRSD needs somewhere for the water to go on the wettest day of the year. Mayor Tarver appreciated the Principles of Agreement and understood why the City entered into the Agreement. He asked DSRSD if it had looked at removing the water from the basin and storing or sharing it somewhere else. If the LAVWMA pipeline is approved, is there a way to discharge into the creeks in an overflow situation. He understood Zone 7 is also pan of the equation. He asked if DSRSD can meet its sewage requirement some other way. Mr. Requa said no. DSRSD has looked at a considerable number of other options. One option is the fringe basin. But the fringe basin does not have the ability to put water into it and take it out periodically. He said DSRSD had to focus on the resources available. Mr. Pico directed his question to Mr. Wu. He understood that currently the City would be prohibited from taking the RO treated water and dumping it into the water arroyos. Mr. Wu said there is a basin plan that prohibits the discharge into nontidal water without extensive testing. It has to do with the impact on the ecology of the rivers and creeks. Mr. Pico understood the City is prohibited by law from taking RO treated water and discharging it into the nontidal basin, like a creek, yet is it safe to inject into the groundwater basin. He did not understand why someone was not working to change the federal law and/or the Regional Water Quality Control Board's position or decision. Mr. Wu said the LAVWMA pipe was built because there was a prohibition of discharging into the creeks. The discharge of RO treated influent has not been proposed to the Regional Water Quality Control Board and it is a complicated process to assess impacts on creeks. Mr. Pico asked how long it would take to get approval from the Regional Water Quality Control Board to be able to discharge RO treated water into the creek. Pleasanton City Council 14 09/08/98 Minutes