(a) The provisions of this Section become operative if: (1) The federal government approves State Plan Amendment transmittal number 08-06 or a State Plan Amendment that permits disproportionate share hospital adjustment payments to be made to county hospitals. (2) Proposed federal regulations, or other regulations or limitations driven by the federal government, negatively impact the net revenues realized by county providers from the Fund during a State fiscal year by more than 15%, as measured by the aggregate average net monthly payment received by the county providers from the Fund from July 2007 through May 2008. (3) The county providers have in good faith submitted timely, complete, and accurate cost reports and supplemental documents as required by the Illinois Department. (4) the county providers maintain and bill for service volumes to individuals eligible for medical assistance under this Code that are no lower than 85% of the volumes provided by and billed to the Illinois Department by the county providers associated with payments received by the county providers from July 2007 through May 2008. Given the substantial financial burdens of the county associated with uncompensated care, the Illinois Department shall make good faith efforts to work with the county to maintain Medicaid volumes to the extent that the county has the adequate capacity to meet the obligations of patient volumes. The Illinois Department and the county shall include in an intergovernmental agreement the process by which these conditions are assessed. The parties may, if necessary, contract with a large, nationally recognized public accounting firm to carry out this function.