9. The undertaker must indemnify the Agency in respect of all costs, charges and expenses that the Agency may reasonably incur or have to pay or that it may sustain—
(a)in the examination or approval of plans under this Part; and
(b)in the inspection of the construction of the specified works or any protective works required by the Agency under this Part; and
(c)the carrying out of any surveys or tests by the Agency that are reasonably required in connection with the construction of the specified works.