| Dense clays, sands & gravel; hard silts & clays |
Medium dense sandy gravel; very stiff to hard silts & clays |
Medium dense coarse sand & sandy gravels; stiff to very stiff silts & clays |
Loose to medium dense fine to coarse sand; firm stiff clays & silts |
Loose fine sand; soft-firm clays; varied clays; & fill |
Peat, organic silts; inundated silts, & fly ash |