19.6.1.1 The level of Unitary Charge paid can be conditional upon the quality of the performance of services. Performance regimes normally work in conjunction with availability regimes (see Section 19.5 (Availability Requirements)).
19.6.1.2 Where this approach is used within the payment mechanism the Contract should set out:
• the level of performance required;
• the means by which the Authority is able to monitor the Contractor's performance against such required level; and
• the consequences for the Contractor of a failure to meet the required level.