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Mr.Mahmoud Parvar ...� <br /> Page 4 <br /> January 26,2000 <br /> DISCUSSION OF SOIL CONDITIONS ENCOUNTERED <br /> Visual classification of each soil stratum encountered according to ASTM D2488 (Visual- <br /> Manual Procedure)was made in the field by a geotechnical engineer at the time the test holes were <br /> drilled.- The samples obtained were checked in the laboratory and classification verified according. <br /> to ASTM D2487. A classification as well as a graphical representation of each soil encountered is <br /> presented on the boring log sheets: The test boring legend is presented on Plate No. 10. <br /> The soils encountered in the test holes were reasonably consistent between test holes. <br /> Generally the profile encountered consisted of several feet of a silty sand/sandy silt(top soil), 10 feet <br /> of silty sand(fill sand), and 30 feet of clean.sand(concrete sand). Towards the bottom in 3 of the <br /> -- 4 test holes, a silty clay stratum was encountered. In test hole B-4, two 9 foot clay strata were <br /> encountered before the clean sand was encountered at a depth of 30 feet. For a more detailed <br /> description of the soils encountered in the test holes see the log of boring sheets. <br /> Based on the results of the laboratory tests the material encountered in the test holes, other <br /> then the clay soils,falls into one of three categories; 1)top soil,2)fill sand,or 3)concrete sand(with <br /> some processing). All of these are products which are currently being mined and produced at the <br /> adjacent Brown Sand&Gravel pit,located south of the subject parcel. Table 3 presents a summary <br /> of the boring information obtained. <br /> TABLE 3, SUMMARY OF SAND DEPOSITS <br /> Thickness of Soil Strata,feet <br /> - Test <br /> Hole Top Clay Fill Clay Concrete <br /> Soil Soil Sand Soil Sand <br /> B-1 2 0 12 0 31 <br /> B-2 7 0 12 0 29 <br /> B-3. 2 0 20 0 26 <br /> 134 6 9 6 9 19 <br /> Average Thiclmess 4.25 2.25 1 12.5 2.25 26.25 <br /> Ground water was first encountered in each of the test holes at depths ranging from 14.5 to <br /> 21 feet. These depths should only be considered.approximate. Since the lower portions of the holes <br /> collapsed upon removal of the auger and the holes were backfilled immediately, an accurate <br /> measurement of the ground water depth was not possible. Ground water depths can and will <br /> _ fluctuate seasonally. <br /> _ ?pE RJO <br /> r ti <br /> > w <br /> O - <br /> 1JrOG <br /> r <br />