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Standard Clause for Unantici ated Subsurface Conditions <br />1 "The owner has had a subsurface Investigation performed by a foundation <br />consultant, the results of which are contained in the consultant's report. <br />The consultant's report presents his conclusions on the subsurface condi <br />I based on his interpretation of the data obtai tlons <br />contractor acknowledges that he has reviewed the consultant'streportna nThe any <br />addenda thereto, and that his bid for earthwork operations is based on the <br />subsurface conditions, as described in this report. It is recognized <br />a subsurface investigation may not disc that <br />Y lose all conditions as they actually <br />exist and further, conditions may change, particularly groundwater conditions,' <br />between the time of a subsurface investigation and the time of ttons, <br />operations. In. recognition earthwork <br />g itlon of these facts, -this clan <br />se is in theto provide a means of equitable additional compensation forethe rcontractorciftract <br />adverse unanticipated conditions are encountered and to provide ^I to the owner if the conditions are more fa P a means of rebate <br />favorable than anticipated. <br />At any time during earthwork, paving and foundation construction o <br />the contractor encounters conditions that are different than thoseAerations that <br />by the foundation consultant's report, anticipated <br />bring this fact to the owner's attentions representativesIflthemowner'sl(hours) <br />the construction site observes subsurface conditions which are on <br />those anticipated b t than <br />P y the foundation consultant's report, he shall immediately <br />(within 24 hours) bring this fact to the contractor's -attention. Once a fa <br />of unanticipated conditions has been brought to the attention of e' fact <br />owner or the contractor, and the consultant has either the <br />...� will be concurred, immediate <br />undertaken between the owner and the contractor to arrive tatnagchange <br />ons <br />in contract price for additional work or reduction in work because of the <br />unanticipated conditions. The contractor agrees that the following <br />would apply for additional or reduced work under -the contract. For ch <br />unit prices <br />conditions for which unit prices are not provided, the additional workashalll <br />be paid for on a time and material basis.11 <br />Another example of a changed conditions clause can be found in paper No. 40 <br />by Robert F. Borg published in ASCE Construction Division Journal, No. CO2 35 <br />September 1964, page 37. , <br />r <br />11 <br />L�J <br />�l <br />1 STS Consultants, Ltd. <br />