How would you handle non-soil materials encountered in excavation (rock, concrete, debris)?

How would you handle non-soil materials encountered in excavation (rock, concrete, debris)?

• A. Ignore non-soil materials and continue excavation.
• B. Separate, classify, determine replacement or removal, adjust costs/time, and follow disposal regulations.
• C. Place non-soil materials back into the trench as fill without testing.
• D. Delay work until the non-soil material naturally degrades.

Answer: (B)