6  Implementation

6.1  Where the Authority has issued a Confirmation Notice in respect of a Medium Value Change or a High Value Change:

(a)  where applicable, the parties shall execute any deed of amendment to this Contract;

(b)  the Contractor shall promptly implement any Change within the timescales set out in the Confirmation Notice and shall do so in a manner which minimises any inconvenience to the Authority;

(c)  the Contractor shall notify the Authority when it believes the Change has been completed;

(d)  where applicable, the Unitary Charge shall be revised in accordance with Schedule ♦ (Adjustment of Base Case).

6.2  No amendments of this Contract shall be made as a result of a Low Value Change [or a Medium Value Change,] unless otherwise agreed between the parties.

6.3  If the Contractor does not:

(a)  respond to a Low Value Change Request or an Authority Change Notice (in the case of a High Value Change either at Stage 1 or Stage 2); or

(b)  complete or implement the Change within the specified timescales,

then the Unitary Charge shall be abated at the rate of the Agreed Abatement for every day of delay from the date the Contractor Response should have been submitted or the Change should have been completed or implemented until the date the Contractor Response is submitted or the Change is completed or implemented (as the case may be).

6.4  All Changes shall be implemented under the terms of this Contract and in particular all provisions applying to the Works shall apply to the carrying out of any additional works or changes to the Works.  

6.5  The Contractor shall keep a record of all Changes (both completed and outstanding) and provide the Authority with these records whenever reasonably required by the Authority.