Paragraph 10 I1

At any time within one calendar month after the receipt by the Company of the plans referred to in paragraph 9 the Company may by notice to the undertaker specify any reasonable temporary or permanent works or measures (the “protective works”) which in its reasonable opinion should be carried out or taken by the undertaker before the commencement of or during the construction of the works in order to ensure the stability of the protected property (shown on the drawings furnished by the Company under paragraph 8) or to protect them from injury and such protective works must be constructed by the undertaker at its own expense and under the inspection (if any) of the Company.