globalko

A contractor has submitted a claim as it's certified but within the claim they have ask for a change order. Firm-Fixed Price contract. The construction contract has been completed pending punch-list items. During the performance of the contract the Govt issued 10 Change Orders which were definitized by supplemental agreement for both time and compensation. The contract was also extended 4 months from the initial 6 months POP. The contract required miscellaneous construction in addition to landscaping and turf maintenance. Contract was awarded during the fall into winter. The contractor only performed landscaping and turf during a two month period until winter as the POP was for 6 months. After final inspection (which they failed, but was accepted for consideration) and custody transfer the contractor submits a request for $50k for additional landscaping and turf maintenance. The contractor states that this was extra-contractual and not paid for in the supplemental agreements. A large percentage of the claim is for "superintendent" lodging, per-diem, travel etc. during the 4 month extension which half were life lines to the contractor. No outstanding change orders exist. How should I proceed with this claim?