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Spiess Rancho Subdivision <br /> Page No. 5 <br /> To assure that the slab subgrade is in a near saturated <br /> condition prior to floor slab placement, pre-saturation of the <br /> subgrade should be performed. The subgrade should be in a <br /> near saturated condition for a minimum depth of 18 inches <br /> below grade. Experience has shown that the best way to <br /> achieve the required saturation is to first cast the footings <br /> to within 4 inches of top of slab. The interior is then <br /> prepared with the addition of the gravel, visqueen, sand, and <br /> reinforcement. Water is then introduced into the gravel layer <br /> and allowed to soak in (the perimeter footing will serve as a <br /> dike to retain the water) . The saturation is critical and <br /> should be verified by an engineer. <br /> It is recommended that our office be retained to perform the <br /> recommended grading control, footing inspection, and if necessary, <br /> pre-saturation inspection. Unless we have been retained to <br /> provided these services, our office can not be held responsible for <br /> problems arising during or after construction that could have been <br /> avoided had these services been performed. The fees for these <br /> services are in addition to that associated with this report. <br /> VII LIMITATIONS <br /> The recommendations of this report are based on the <br /> information provided regarding the proposed construction as well as <br /> _ the subsoil conditions encountered at the test hole locations. If <br /> the proposed construction is modified or resited, or if it is found <br /> during construction that subsurface conditions differ from those <br /> described on the soil logs, the conclusions and recommendations of <br /> this report should be considered invalid unless the changes are <br /> reviewed and the conclusions and recommendations modified or <br /> approved in writing. <br /> The analysis, conclusions and recommendations contained in <br /> this report are based on the site conditions as they existed at the <br /> time we excavated our test holes. It was assumed that the test <br /> holes are representative of the subsurface conditions throughout <br /> the site. <br /> If there is a substantial lapse of time between the submission <br /> of our report and the start of work at the site, or if conditions <br /> have changed due to natural causes or construction operations at or <br /> adjacent to the site, we urge that our report be reviewed to <br /> determine the applicability of the conclusions and recommendations <br /> considering the changed conditions and time lapse. This report is <br /> P pERSO� <br /> Z W <br /> 4SSOG� <br /> P <br />