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6.0 PROCEDURES <br />6.1 Soil Classification <br />The drill crew chief visually and manually classified the soils encountered in the borings in general <br />accordance with ASTM D 2488, "Description and Identification of Soils (Visual -Manual <br />Procedure)". Soil terminology notes are included in the Appendix. The samples were returned <br />to our laboratory for review of the field classification by a soils engineer. Samples will be retained <br />for a period of 30 days. <br />6.2 Groundwater Observations <br />Immediately after taking the final samples in the bottom of the borings, the holes were checked <br />for the presence of groundwater. Immediately after removing the augers from the borehole the <br />holes were once again checked and the depth to water and cave-in depths were noted. <br />7.0 GENERAL <br />7.1 Subsurface Variations <br />The analyses and recommendations presented in this report are based on data obtained from a <br />limited number of soil borings. Variations can occur away from the borings, the nature of which <br />may not become apparent until additional exploration work is completed or construction is <br />conducted. A reevaluation of the recommendations in this report should be made after <br />performing on -site observations during construction to note the characteristics of any variations. <br />The variations may result in additional foundation costs and it is suggested that a contingency be <br />provided for this purpose. <br />It is recommended that we be retained to perform the observation and testing program during <br />construction to evaluate whether the design is as expected, if any design changes have affected <br />the validity of our recommendations, and if our recommendations have been correctly interpreted <br />and implemented in the designs, specifications and construction methods. This will allow <br />correlation of the soil conditions encountered during construction to the soil borings and will <br />provide continuity of professional responsibility. <br />7.2 Review of Design <br />This report is based on the design of the proposed structure as related to us for preparation of this <br />report. It is recommended that we be retained to review the geotechnical aspects of the design <br />and specifications. With the review we will evaluate whether any changes have affected the <br />validity of the recommendations and whether our recommendations have been correctly <br />interpreted and implemented in the design and specifications. <br />10 <br />