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I . I . . Mr. Whitaker described the proposal to build a 29 feet wide roadway per the City's l- approved plans from 1971 and said Senior Engineer Csisman had reviewed them and said they were still to City Engineering standards. Mr. Whitaker addressed the issue of the staff's observation of geological hazards. Mr. Whitaker said his property and the land east of him was truly solid land and posed no geological hazards, and the properties to the west of him were very dissimilar to his property. He referred to a geological report by Mr. MicheIuscci and Associates which concluded that his property was a very stable building site, above his expectations with less than four feet oftop soil over Franciscan Assemblage rock. He said the report also stated there was stable soil for the roadway as well. Mr. Whitaker said four of the five lots, including his have soils reports stating that land is stable without any slope creepage. He said the soil creepage staff referred to applied to properties located at the western end of Laurel Way, beyond his property. Mr. Whitaker said there was a true geological and topographical difference that separated his property from the properties to his west. Yizhaq Makovsky, doctoral student in Geophysics, Stanford University, said Mr. Whitaker had asked him to review the two geological reports, Garibaldo Associates from 1970 and the Micheluscci & Associates. He said it was his opinion that the Council policy for that area is probably correct, but it should start after Mr. Whitaker's property according to the lot and soil conditions that separate the eastern from the , western areas at that particular property line. Mr. Makovsky used overheads to describe Mr. Whitaker's property as having the lowest slope in that particular part of the hillside, and said staff's slides were not of this particular area. Mr. Makovsky said Franciscan Assemblage is California state rock, but the area to the west has plastic soil which creeps by itself (section of the road 650 to 950.) He said the western area of Laurel Way "is sitting on what they call greystone, which is a rock that has been deformed and has been damaged pretty badly, and soil on top of this rock would be creeping pretty badly. The rest of the area to the east of 650 does not have that situation, at least not in a significant way." Mr. Makovsky said the inactive fault line at the westerly end of Mr. Whitaker's property only designates a change in rock type." Mr. Makovsky described the soil conditions on those properties, saying the Marina District in San Francisco sustained damage during the earthquake because buildings were on tens of feet of soil, but Mr. Whitaker's property has a maximum of3-4 feet of soil, and is more stable. He added that the conclusion of the report was that "with this soil if you do the right engineering solutions, you should be able to build the house the way you want it." Mr. Makovsky discussed rock fracturing, seepage zones and bore holes. He said supposed seepage was not from water springs but from sewer seepage --- which was taken care of by a new sewer system. He discussed retaining walls, roadways and possible sloping problems. REGULAR COUNCIL MEETING MINUTE BOOK NO. 54 AUGUST 26, 1996 MINUTES Page No. 460 PAGE 23