(Added by Ordinance No. 167121, effective November 17, 1993.) The Environmental Remediation Fund is hereby made a part of the Code of the City of Portland, Oregon, for the receipt of monies derived from the sale of Revenue Bonds, remediation charges and transfers made to the Fund from the Refuse Disposal Fund; and from which all expenditures relating to the System shall be made. Monies from this Fund, including interest earned by the Fund, shall be used for specifically identified remediation projects and debt service. Money in the Environmental Remediation Fund may be commingled with other City money for investment purposes. Should this Fund become unnecessary any monies remaining in this Fund shall be paid to the Refuse Disposal Fund.