8. Coordinating operations engineers, operations engineers, project managers and coordinating project managers are authorized to sign(1) proposals to clients and construction contracts where the amount is less than $100,000;
(2) contracts for professional services where the amount is less than $10,000;
(3) contracts for services other than professional services where the amount is less than $50,000;
(4) supply contracts where the amount is less than $25,000;
(5) deeds of receipt of a work concerning a contract where the amount is less than $100,000; and
(6) customer program changes, orders for changes and riders to construction contracts where the amount is less than $10,000, to contracts for services other than professional services where the amount is less than $5,000, to supply contracts where the amount is less than $2,500 and to contracts for professional services where the amount is less than $1,000.