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GROUNDWATER <br /> Groundwater was encountered in all of the borings, except boring 1, at depths of six to <br /> eighteen feet beneath the surface at the time of drilling. Groundwater monitoring wells <br /> were placed in all borings at the time of drilling for future monitoring operations. <br /> Water levels will fluctuate depending on environmental conditions and seasonal flows in <br /> the rivers and irrigation ditches. <br /> AGGREGATE QUALITY <br /> As previously discussed, the material sampled during drilling operations was tested for <br /> grain size distribution (gradation analysis). The material tested is from bulk samples <br /> taken from the auger flights during drilling operations. It is not possible to retrieve all of <br /> the material being drilled so results of gradations may not be representative of the true <br /> size of the material encountered. <br /> The results of the gradation analyses, which were performed on samples we anticipate <br /> could be used to produce construction materials, indicate 28.8% of the material tested is <br /> gravel (+No. 4 sieve size). The fine portion, silt and clay, (-No. 200 sieve size) averaged <br /> 3.7% and 67.5% of the material classifies as sand. <br /> LIMITATIONS <br /> The borings were drilled at the locations and to the depths agreed upon by the client and <br /> WesTest. Variations in the subsoil conditions not indicated by our borings are possible <br /> and should be anticipated due to the distance between borings. We believe this <br /> investigation was performed in a manner consistent with the level of care and skill <br /> ordinarily used by geotechnical engineers practicing in this area at this time. No other <br /> warranty, expressed or implied, is made. If we can be of further assistance in discussing <br /> the contents of this report, please contact us at your convenience. <br /> Two Rivers Property,WesTest Project No. 440515,February 12,2015 7 <br />