For problems 4 and 5: Soil properties: y= 125 psf, c=1.52 ksf, '=0 4. You are asked to build a 40-ft high levee out of clay. The embankment is placed on soil with the same properties. Based on the soil properties, and a design slope of 1:4 (H:V), is the slope safe (FS >1)? Do you expect the failure circle to pass through the face, toe, or base of the embankment