If the contractor uncovers site conditions that could not have reasonably been accounted for what must he do and how long does he have to carry this out?

• A. Notify after disturbances
• B. Do nothing
• C. Notify only the owner
• D. Promptly notify owner and architect before disturbing, and no later than 21 days after first uncovered

Answer: (D)

When site conditions differ from what the contract documents indicated and those differences could not have been reasonably anticipated, the contractor must promptly bring the issue to the attention of the owner and the architect before disturbing the affected area. This early notice is essential so a proper evaluation can determine an equitable adjustment to the contract price and schedule, and to decide on the appropriate change order or directive. The notice must be given within 21 days after the condition is first uncovered, ensuring the process stays timely and documented.

Notifying only the owner or delaying notice, or doing nothing, would leave the architect and contractor without a documented path for adjustment and could lead to disputes or the contractor absorbing unanticipated costs.