27 Miss. Code. R. 100-7-111
A request to modify an existing PSCRB-approved contract is to be submitted to the PSCRB thirty (30) calendar days prior to a PSCRB meeting date which precedes the modification effective date. Any request for exception to this deadline must follow the same procedure as outlined in Section 7-106 (Deadline Exception Requests). Modifications shall not grant extra compensation, fee, or allowance to any contractor after service is rendered or contract is made, unless contemplated within the contract itself or unless the scope of services is increased. The extension of a contract is considered a modification wherein the specified contractual services have not been completed by the end date stipulated in the original terms of the contract. Modifications cannot be made to expired contracts.
PSCRB staff has the authority to approve modifications to previously approved contracts that involve accounting errors and other technical problems which do not change the originally approved terms and conditions.
PSCRB staff has the authority to approve modifications that only reduce the dollar amount of the contracts or modifications in which the amount and services are unchanged. These modifications cannot change the service agreement.
PSCRB staff has the authority to approve modifications to previously approved contracts that involve cost per unit fees up to ten (10) percent of the original approved contract amount not to exceed a total contract amount of $500,000.
27 Miss. Code. R. 100-7-111