Following further request from Mr. Bill Pigg, additional geotechnical modelling works were carried out based on Council's revised flood levels, which were supplied on 27/10/00. The RL of the embankment were also obtained from the recent survey results supplied by Mr. Peter Nelson of RSA Bathurst. Based on these levels, the SEEP/W model was revised and the results are discussed in this report. It is important to mention that this report should be read in conjunction with our previous geotechnical investigation report submitted in May 2000.

This report presents the stability and seepage analysis through the railway embankment at Bathurst, which extends from 238.332km to 239.104km on the Main Western Railway line. Macquarie River is located to the country end of the embankment and Raglan Creek to the Sydney end, thus, forming a large flood plain on the Down side of the embankment.

The embankment is located on the Main Western Railway line between 238.332km to 239.104km. The embankment is confined by the Macquarie River on the country side and Raglan Creek to the Sydney side. Levees at the Country and Sydney end have produced a large floodplain on the Down side of the embankment. The embankment is about 3.5m high and has a slope, approximately 27°. The downstream face of the embankment is covered with grass and vegetation, and has a water ponding area along the bank.