Laserfiche WebLink
Soil Suitability/ Nitrate Loading Study Irerracon <br /> Manteca Farm Improvement Manteca, California <br /> October 29, 2019 • Terracon Project No. NA197073 <br /> Map Symbol Map Unit Name Percent of Site Location <br /> Veritas fine sandy <br /> 266 loam, 0 to 2 percent 1.0 Eastern border <br /> slopes <br /> According to the USDA Soil Survey of San Joaquin County (1992), Delhi fine sand soils consist <br /> of very deep somewhat excessively drained soils with 0 to 5 percent slopes. Parent material is <br /> wind-modified alluvium derived from granitic rock sources. Typical soil profiles consist of 0 to 60 <br /> inches fine sand. The main limititations for this soil type is rapid permeability. Refer to Section <br /> 2.1 for further discussion of the soil information and Appendix for information regarding the <br /> remaining soil types. <br /> Based on a review of the Krazan geotechnical boring B12 advanced to 50 feet bgs, site soils <br /> consisted of very loose fine to medium grained silty sand between 0 and 13.5 feet bgs, medium <br /> dense fine to medium grained sandy silt between 13.5 and 25 feet bgs, medium dense, fine to <br /> medium grained silty sand between 25 and 35 feet bgs, medium dense fine to coarse grained <br /> silty sand between 35 and 38 feet bgs, very stiff fine grained sandy clay between 38 and 43.5 feet <br /> bgs and medium dense to fined to coarse grained silty sand between 43.5 and 50 feet bgs. <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 /> northwest of the proposed agricultural building. The percolation test boring (131) and soil profile <br /> boring (132) were placed near the anticipated primary leachfield. Boring B2 was placed within <br /> approximately 10 feet northeast of boring B1. <br /> Table 5. <br /> Soil Boring Locations. <br /> Boring No. Latitude Longitude <br /> 131 37.8351280 -121.2198749 <br /> 132 37.835159 -121.219865 <br /> Refer to Appendix A, Exhibit 2 for the boring location. <br /> 1.5.2 Soil Boring Dimensions <br /> Soil borings B1 and B2 were advanced with a 4 inch diameter handauger. Boring B1 was <br /> advanced to 3.5 feet bgs and boring B2 was advanced 10 feet bgs. <br /> 1.5.3 Soil Lithology Observed <br /> The following table presents a log of the soil boring(s). <br /> Responsive ■ Resourceful ■ Reliable 10 <br />