11. The assistant director of the branch responsible for infrastructures is authorized to sign, for the branch,(1) supply contracts, services contracts and construction contracts for less than $75,000;
(2) an amendment, that entails or not an additional expenditure, to a contract involving an expenditure equal to or above the public tender threshold applicable to the contract and whose total additional expenditures, if any, is less than 10% of the initial amount of the contract and up to a total amount of additional expenditures less than $75,000, but an amount less than $25,000 per amendment; and
(3) an amendment, that entails or not an additional expenditure, to a contract involving an expenditure below the public tender threshold applicable to the contract,(a) up to a total amount of any additional expenditures less than $75,000, but an amount less than $25,000 per amendment; and
(b) the total value of the contract, including any additional expenditures, below the public tender threshold applicable to the contract.