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beneath those or adjacent to those observed. No warranties expressed or implied are given on the content <br />of this report. <br />Swelling soils and bedrock materials were encountered at this site. These soils and bedrock materials are <br />stable at their natural moisture content but can shrink or swell with changes in moisture. The behavior of <br />swelling soils bedrock is not fully understood. The swell potential of any particulaz site can change <br />erratically both in lateral and vertical extent. Moisture changes also occur erratically, resulting in <br />conditions, which cannot always be predicted. The recommendations presented in this report are based on <br />the current state of the art for foundations and floor slabs on swelling soils bedrock. The owner should be <br />aware that there is a risk in constmction on these types of soil bedrock. Performance of the structures will <br />depend on following the recommendations and in proper maintenance after construction is complete. As <br />water is the main cause for volume change in these soils bedrock materials, it is necessary that the changes <br />in moisture content be kept to a minimum. This requires judicious irrigation and providing positive surface <br />drainage away from the structures. Any distress noted in the structures should be brought to the attention <br />of a professional engineer. <br />This report is based on the investigation at the described site and on the specific anticipated construction as <br />stated herein. If either of these conditions is changed, the results would also most likely change. <br />Therefore, we strongly recommend that our firm be contacted prior to finalizing the construction plans so <br />that we can verify that our recommendations are being properly incorporated into the building plans. <br />Man-made or natural changes in the conditions of a property can also occur over a period of time. In <br />addition, changes in requvements due to state of the art knowledge and/or legistation do from time to time <br />occur. As a result, the findings of this report may become invalid due [o these changes. Therefore, this <br />report is subject to review and not considered valid after a period of 3 years or if conditions as stated above <br />aze altered. <br />It is the responsibility of the owner or his representative to insure that the information in this report is <br />incorporated into the plans and/or specifications and construction of the project. It is advisable that a <br />contractor familiar with construction details typically used to dealing with the local subsoils and climatic <br />conditions be retained to build the strut es. If you have any questions regazding this report or if we may <br />be of further service, please do not he ete to contact us. <br />Sincerely, <br />NWCC, INC. <br />Timothy S. <br />Reviewed by Brian D. Len, P.E~ ~p~~ 3 <br />xc: Steve Bushart -Peabody <br />Job Number: 07-7442 NWCC, Inc. Page 10 <br />