Soil Summary:
very deep, very gravelly sandy loam surface soils and extremely cobbly sandy loam and loamy sand subsurface layers, lime lacking except for coatings on cobbles and gravels lower in the soil, no development; dominated by Pima County soil survey map unit 37 (Keysto extremely gravelly fine sandy loam, 2 to 8 percent slopes). This unit comprises 100% of the unit, respectively
Geologic Materials:
river alluvium associated with Holocene piedmont alluvium, undivided (Qy) which comprise 95% of the LTA
