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Soil Suitability/ Nitrate Loading Study Irerracon <br /> Whitlow Property : Stockton, CA <br /> November 20, 2019 Terracon Project No. NA197078 <br /> overcome by increasing the size of the leachfield, backfilling the trench with sandy material, and <br /> installing long absorption lines. Refer to Section 2.1 for further discussion of the soil information. <br /> 1.5.1 Soil Boring Locations <br /> Based on a review of the site plan, the proposed primary and reserve leachfields will be located <br /> at the northwestern corner of the site. All borings were placed within the vicinity of the proposed <br /> primary and reserve leachfields. <br /> Table 4. <br /> Soil Boring Locations. <br /> Boring No. Latitude Longitude <br /> 131 38.067988 -121.211722 <br /> 62 38.068060 -121.211750 <br /> B3 38.068113 -121.211732 <br /> 64 38.068101 -121.211650 <br /> B5 38.068110 -121.211598 <br /> B6 38.068112 -121.211542 <br /> Refer to Appendix A, Exhibit 2 for the boring locations. <br /> 1.5.2 Soil Boring Dimensions <br /> Soil borings B1 and B2 were advanced with a 4 inch diameter handauger. Borings B3 through <br /> B6 were advanced with a track mounted drill rig utilizing an 8 inch diameter hollow stem auger. <br /> Refer to Table 5 for boring depths. <br /> 1.5.3 Soil Lithology Observed <br /> The following table presents a log of the soil boring(s). <br /> Table 5. <br /> Summary of Soil Lithology. <br /> Boring <br /> Total Depth Depth Interval Soil Type Unified Soil <br /> (feet) (feet) Classification <br /> 0 to 1.5 Silt with sand, brown ML <br /> B1 3.5 <br /> 1.5 to 3.5 Clay, dark brown CL <br /> 0 to 2.5 Clay, dark brown CL <br /> B2 5.0 2.5 to 4.0 Clay, reddish brown CL <br /> 4.0 to 5.0 Silt with clay, refusal at 5.0 MUCL <br /> feet bgs <br /> Responsive ■ Resourceful ■ Reliable 9 <br />