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Mr. Mahmoud Parvar <br /> Page 3 <br /> January 26,2000 <br /> FIELD EXPLORATION AND LABORATORY TESTING <br /> The field investigation conducted at this site consisted of drilling 4 exploratory test holes <br /> carried to a depth of 49 feet. The approximate location of the test holes was determined in <br /> conjunction with the owner,after taking into consideration the state mineral resource map. Test hole <br /> locations were determined in the field by"approximating off of the parcel map provided by Triple <br /> E Engineering. For approximate location of the test holes see the Location Map, Plate No. 1. <br /> The test holes were drilled with a truck mounted.Deep Rock drill rig,utilizing 4.5 inch diameter, <br /> continuous.flight auger. Sampling of the test holes above the groundwater was performed at various <br /> depths by a California modified split spoon sampler. Blow counts (SPT) required to drive the <br /> sampler every 6 inches were recorded and this information is presented on the Log of Boring sheets, <br /> Plates No. 2 through 9. Addition grab.samples.were obtained from the auger flights as they were <br /> removed from the holes for depths blow the ground water. <br /> Samples obtained were taken to the laboratory of Neil O.Anderson&Associates,Inc.,Lodi, <br /> California and used for various lab tests. Tests performed included gradations,sand equivalents,and <br /> atterberg limits. A summary of the laboratory test results is presented in the following Table 2, <br /> Laboratory Test Results. <br /> TABLE 2, LABORATORY TEST RESULTS <br /> Gradation Sand Aneberg Limits <br /> Test Depth Material %passing sieve Equi- <br /> Hole (ft.) valent Liquid Plasticity <br /> #4 #8 416 #30 450 #100 #200 Limit Index <br /> B-1 10 fine clean sand — 100 98 74 26 6.9 3.7 — — <br /> B-1 IS medium to fine clean sand — 100 98 84 48 7.2 2.0 — — — <br /> B-2 10 silty fine sand — 100 98 81 59 35 20 45 — — <br /> B-2 20 medium to fine clean sand — 100 97 84 45 10 3.9 — — — <br /> B-2 30 medium to fine clean sand 100 98 84 47 17 6.7 65 — — <br /> B-3 10 very fine sand w/some silt — — — 100 91 36 11 49 — — <br /> B-3 20 fine sandy silt& very fine — — — 100 98 81 70 — 28 5 <br /> clean sand <br /> B-3 40 medium to fine clean sand Loo 98 85 50 19 8.4 3.9 — — — <br /> B-3 50 medium to fine sand 100 99 94 67 21 10 7.2 77 — — <br /> B-4 5 silt w/some sand 100 98 97 96 95 9.4 91 — 31 Z <br /> B-4 15 medium to fine clean sand — 100 99 91 63 12, 3.1 — — — <br /> rQE RSO <br /> P ti <br /> i <br /> o � <br /> P <br /> •SS O G <br />