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77-226 <br />Mr. Bob Mason -4- December 9, 1977 <br />If any concrete is placed, it should be maintained at a <br />temperature in excess of 50 degrees Fahrenheit for a minimum <br />of 48 hours following placement. No concrete should be <br />placed upon frozen soil or soils which contain frozen materials. <br />D. GENERAL REMARKS: <br />The analysis and recommendations submitted in this report <br />are based upon the data obtained from the 2 soil borings <br />performed at the locations indicated on the attached sketch. <br />Variations may occur between these borings, the nature and <br />extent of which may not become evident until construction. <br />If variations are encountered, it will be necessary to make <br />a re-evaluation of the recommendations of this report after <br />performing on -site observations during the construction and <br />noting the characteristics of any variations. Such varia- <br />tions may result in additional foundation costs and it is <br />suggested that a contingency be provided for this purpose. <br />To permit correlation of the soil data obtained to date with <br />the actual soil conditions encountered during construction <br />and to provide continuing professional responsibility for <br />the conformance of the construction to the concepts originally <br />contemplated in this report and to the plans and specifica- <br />tions, it is recommended that we be retained to develop and <br />' perform the necessary observation and testing program for <br />the excavation and foundation phases of the project. <br />If others perform the recommended observations and/or testing <br />of construction, professional responsibility becomes divided <br />since in doing so, they assume responsibility for verifying <br />that the soil conditions throughout the construction areas <br />' are similar to those encountered in the borings or recognizing <br />variations which would require a change in recommendations. <br />11 <br />HRAun <br />ENGINEERING TESTING <br />