This estimate for the potential number of FGD retrofits considers the resource and labor requirements of the simultaneous installation of SCRs, which is further discussed under the labor section (6.
It is a comprehensive cost analysis. 
mnli hypothesis: It is a comprehensive cost analysis.  premise: This estimate for the potential number of FGD retrofits considers the resource and labor requirements of the simultaneous installation of SCRs, which is further discussed under the labor section (6.