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Minutes - San Leandro City Council Meeting - October 4, 1993 Page - 21 - PUBLIC HEARINGS (continued) Council Member Corbett asked questions related to the trail and buffer and the relationship of the buffer to the backyards and fences. Staff described the trail and its relationship to the Army Corps' 404 permit. Council Member Corbett discussed the issue of groundwater contamination and testing and asked whether there is migration from site 2 to site 1 . She said she asked staff if DTSC would be available for questions. She said DTSC can best answer whether they will require additional testing to determine groundwater flow patterns and whether there can be migration or not on this site. She said the material she has does not give information if there could be migration. She said we must make sure there isn't going to be migration and she had not heard enough to convince her. Mayor Faria said if there is migration then the developer would be responsible to clean it up. Council Member Corbett said she would like to be able to ask DTSC if they will require such testing. She asked the developer whether he would be willing to do some testing to conclusively show that there isn't going to be a groundwater migration problem. Ed Alvarez, Citation Homes, said there is disagreement over what the groundwater contamination issue is. He said we ought to agree on what the facts are and then we can go for a solution. Terry McManus summarized the issue of potential migration from 2 to 1 and said they responded to migration in the September 9th response to DISC. He said one component is the groundwater flow direction. The other parts have to do with the chemicals and moving or leaching from the soils into the groundwater beneath area 2. The wells in area. 2, installed in the highest chemical concentrations, don't show that it happens at an appreciable level . Council Member Corbett asked if there has been some leaching into the groundwater. Mr. McManus said there were very low levels of detectible chemicals. He said they are dealing with immobile, insoluble chemicals like the few metals and the nitrostarch compounds which have no water quality concern because they are not water soluble. With all factors taken into consideration, it is very unlikely they would move from area 2 to area 1 . In response to questions from Council Member Corbett, Mr. McManus said it is their conclusion that no further work is needed in area 1 . He said even if there are some detected chemicals in area 1 , it wouldn't pose a future health risk to future residents.