Paragraph 9 I1

If any alterations or additions either permanent or temporary, to protected property are reasonably necessary during the construction of the specified works, or during a period of 12 months after the completion thereof, in consequence of the construction of the specified works, then, provided LRSL has first given the undertaker the opportunity to carry out the protective works itself, such alterations and additions may be carried out by LRSL after giving the undertaker reasonable notice of its intention to carry out such alterations or additions and the undertaker shall pay LRSL the reasonable cost thereof as certified by the engineer, including in respect of permanent alterations and additions a capitalised sum representing any increase in the costs which may be expected to be reasonably incurred by LRSL in maintaining, working and, when necessary, renewing any such alterations or additions.

If the cost of maintaining, working or renewing protected property is reduced in consequence of any such alterations or additions, a capitalised sum representing such saving shall be set off against any sum payable by the undertaker to LRSL under this paragraph.