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