Specifications include, but are not limited to: #4 HEATING OIL – ASTM D396 latest revision. Oil to be furnished shall conform to the Detailed Requirements for Fuel Oils, Table 1 Tentative Specification for Fuel Oils ASTM D396 latest revision for No. 4 Oil with the following requirements: Sulfur Content: 0.25%. 2.3.1.The Contractor is responsible for the proper transfer of regulated substances and shall employ practices for preventing releases caused by transfer spills and overfills. Prior to transfer, the contractor shall determine by gauging that the tank has available capacity to receive the volume of product to be transferred. The carrier shall remain within 25 feet of the cargo tank to monitor every aspect of the delivery and shall take immediate action to stop the flow of regulated substance when the capacity of the tank has been reached or should an equipment failure or emergency occur. 2.3.2.Delivery slips, meter printed delivery receipt or a copy of the Contractor's supplier's statement of delivery shall be signed by an employee at the time of the delivery. A copy will be left at the delivery location and a copy is to be forwarded by the Contractor with the invoice to the appropriate payable office for payment on a monthly basis. 2.3.3.The Contractor shall make all necessary arrangements directly with using agencies to ensure that a sufficient supply of fuel remains in each such agency's tanks to meet such agency's operational needs throughout the period of the contract.