Geotechnical report is a tool used to communicate the site conditions, design and construction recommendations. The importance of adequate site investigation and preparation of comprehensive geotechnical report cannot be over emphasized. Reliability of the information contained in geotechnical report has a strong influence on design, construction, project cost, safety and resolution of contractual disputes and hence the report must be clear, concise and accurate. Inadequate geotechnical investigations are many a times source of costly, over designed foundations, project delays, disputes, claims, and project cost overruns. Lack of adequate information from the Geotechnical Report may sometimes lead to deeper excavation for founding depths and hence an uneconomical design of foundation. This paper illustrates how an inaccurate geotechnical report for a power project led to selecting expensive foundation designs initially, which was subsequently optimized based on actual conditions realized at site.