Paragraph 4

If within 56 days after such plans have been furnished to the Company, the Company shall give notice to the undertaker that the Company desire themselves to construct any part of the specified works which in the opinion of the engineer will or may affect the stability of designated property or the safe operation of the Company’s railways, then, if the undertaker desires such part of the specified works to be constructed, the Company shall construct it with all reasonable dispatch on behalf of and to the reasonable satisfaction of the undertaker in accordance with approved plans.