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Minutes - San Leandro City Council Meeting - May 17, 1993 Page - 17 - PUBLIC HEARINGS (continued) Council Member Corbett said she had heard a comment that soil conditions should be reviewed every two years and asked what sorts of conditions may change in that period. Mr. King said the property did not need to be tested again because there have been no changes in the soils, and his firm would also be involved in the geotechnical process during construction. He said the site has also withstood all of the rain very well . Mayor Karp said the owners of homes above the property are concerned regarding slippage. He asked what the responsibility would be of the Geotechnical Engineer and what sort of protection would be operative for property owners above the site. Mr. King said he had not evaluated the homes above the site. Mayor Karp asked what would happen if this site slipped and caused damage to the homes above, such as a pool slipping down the hill . Mr. King said he could not make any warranties. Mayor Karp pointed out that there had been problems behind the hospital where the hill slipped and the Soils Engineer was responsible because he had a 10-year bond. In response to questions by Council Member Polvorosa, Mr. King said the ravine was caused by geotechnical conditions at the time. He said the runoff from the site currently goes through surface-mounted concrete ditches, and they propose to add a series of ditches to extend the drainage system and to control runoff. He said there was no evidence of a spring in the area: Council Member Perry asked how the retaining wall helped with the soil . Mr. King said the retaining walls would be crib walls and would be covered with vegetation. He said there would be no additional benching. Council Member Kerr asked how far the piling would go. Mr. King said 10 to 15 feet deep, and it would go below the fill area. Gene DeBolt, Civil Engineer on the project, said his firm has done a boundary survey and parcel map and improvement plans, which include drainage, sewer, driveway, etc. He said the driveway ranges from 16 to 22 feet wide and has been approved by the Fire Department for emergency access. He said the drainage ditches at the top of each of the walls will take water down to Montrose Drive. He said the driveway slope would be 20% maximum. The Hearing was then opened to the public. Don Cook, 2155 Edgehill Court, said he was against the project. He said he understood the Negative Declaration had not been approved and, therefore, the lot split was moot.