Just to add to what Glenn has said, the assessment is based upon the additional Defined Cost to deliver the scope of works, consequent to the impact the compensation event has (had). It is unlikely that a single CE will affect the ‘prelim’ costs, including the Site team, but if that were, say, 200 CE’s then it is almost certain that it would.
The problem is that you don’t know how many CE’s, by number and value, that you will have on a project, until after the Defects Certificate is issued and all CE’s are then known. There are several possible ways to deal with this under the contract;
Request the PM to make an assumption that no further ‘Site team’ resources are required,
Add in a Risk Allowance based upon a considered forecast assumption of the total volume of CE’s and likely affect upon the ‘Site team’,
Raise an early warning and discuss this matter as a separate issue outside of the CE procedure, possibly with an action on the PM to review resource levels and instruct further resources as a change to the Works Information, where appropriate, although this requires a strong collaborative approach.
This is frequently a contentious issue but if you take discussions outside of the CE forum and produce sensible evidence and information to present your case then that may assist in resolving the matter.