<ul><li>These costs relate to additional works further to original rerouting of drainage works whereby concrete structures were encountered during the excavation whereby under instruction from Engie&nbsp;the previously removed excavation was back filled and the new route agreed and excavated whereby the drainage was rerouted this includes the positioning of new manholes / examination pits and excavation works relating to drainage rerouting surrounding the footings.&nbsp;</li></ul><p>Our total cost to carry out the above works in normal working hours shall be</p>