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large fire vehicle from the cul-de-sac making the first bend, especially if there was another vehicle on that road and whether or not the fire department is convinced they can get up there. Mr. Harris stated that the fire department didn't say they couldn't get up there, but rather they were concerned with the speed with which they could get up there. Mr. Bissell commented that concerning the EIR, he couldn't find anything in it which stated the fire department could not negotiate the roadway. Commissioner Jamieson stated they should run a truck up there. Harvey Levine, City Attorney, stated he recalls, in reviewing litigation, there were some attempts to simulate the radius at the Fairgrounds to see what the results were, but couldn't remember the results. Commissioner Wilson addressed page 15 of the EIR regarding the 1,500,000 gallon water tank at 1600 feet which is currently on the ridge. Alan Campbell, Director of Public Works spoke to this, stating that this tank is much further south and higher up. William Wiggenden, Certified Geologist, and author of the 1968 geologic report, Preliminary Soil and Geological Information for Longview Develop- ment spoke stating that Bissell and Karn asked him to review the EIR and the Burkland work done on this project. He stated he thought it was interesting to note that the geologists have called this "low risk to moderate risk" when people are living on the ridge and are obviously satis- fied with the risks involved yet he sees a public body indicating there appears to be a problem too great and there is a geological hazard and circumstances which cannot be mitigated. He stated his firm has done a number of reports on the ridge in the Sam Ramon Valley and land stability is becoming a major problem. He says this seems to have begun in 1971. He said that the U. S. Geological Survey and H.U.D. analyzed the Bay Area hill lands using aerial photos and based on gross interpretations of these photos termed large areas as being subject to landslides. He addressed the Starview area on which Eugene O'Neal built his home in 1920 as well as the Las Trampas areas. He stated there were extensive studies which included borings of 100 feet in Contra Costa County and the County Geologist stated there were no major landslides existing. He stated he felt the same situation exists here. He stated air photos can only. detail if it has the shape of a landslide and that is all. He stated he has not seen evidence there is a slide and based on what he has read he would not change his opinion since 1968. He stated there are cuts 25-30 feet deep that are not sliding. He stated that Murray Levish talked about 200 years to 10,200 years ago with regard to movement and that this area is 5 miles long and a 1,000 feet wide. He stated that Moore & Tabor based their opinions of the geology on air photos and that is their basis for calling it a landslide. Mr. Wiggenden stated he has not come to that conclusion, and that all evidence tells him it is suit- able if there are site specific studies made. He stated you could put strain indicators galore on the hills but that there are houses up there that are not cracking and there has been no 2" per year movement. He stated he was prepared to answer any questions presented to him con- cerning his findings. Commissioner Doherty addressed Mr. Wiggenden's statement indicating that Mr. Wiggenden struck bedrock on the ridge. Commissioner Doherty then asked if there had been any slides on the ridge. Mr. Wiggenden re- sponded yes, but based on studies of Las Trampas, two landslides happened relating to fill or poor construction and that they did lose 4-5 homes. Commissioner Doherty stated that in 1961 in Pacifica which is near San -5-