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I. Kleinfelder <br />December 10, 2003 <br />Page 5 <br />LIMITATIONS <br />In general, there are limitations unique to each geophysical method employed for this investigation. <br />For example, objects may be buried deeper than the detection capabilities of the geophysical method. <br />There may be a lack of contrast in physical properties between native soils and buried objects. <br />Above or below ground cultural features, such as utilities, fences, and debris, may cause interference <br />that limits or masks the detection of a nearby subsurface object. Since the accuracy of our findings <br />is subject to these limitations, it should be noted that not all USTs or other buried objects may have <br />been detected or characterized by the geophysical techniques used for this investigation. Additional <br />discussion of the limitations with regard to each of the geophysical methods employed for this <br />investigation are included in Appendix A. <br />STANDARD CARE AND WARRANTY <br />The scope of NORCAL's services for this project consisted of using geophysical techniques to <br />explore the subsurface. The accuracy of our findings is subject to specific site conditions and <br />limitations inherent to the techniques used. We performed our services in a manner consistent with <br />the standard of care ordinarily exercised by members of the profession currently employing similar <br />techniques. No warranty, with respect to the performance of services or products delivered under this <br />agreement, expressed or implied, is made by NORCAL. <br />We appreciate having the opportunity to provide you with our geophysical services. <br />Respectfully, <br />NORCAL Geophysical Consultants, Inc. <br />Dan P. Jones <br />Geophysicist, GP-1042 <br />Enclosure: , Plate 1 - Geophysical Survey Map <br />Appendix A - GEOPHYSICAL METHODS <br />ii