What do the additional demand factor and microbial demand factor mean in the HRC software spreadsheet?
The inclusion of a safety factor/additional demand factor is a typical engineering design technique used to provide a conservative estimate for the amount of HRC necessary for subsurface systems that have a high degree of variability and are minimally sampled for chemical/hydrological parameters. The safety factor/additional demand factor provides contingency to account for the many uncertainties inherent in subsurface investigations and in situ remediation projects. Potential sources of unexpected or contingent HRC demand include higher than expected contaminant mass (in the form of residual phase NAPL present of hot spots) and uncertainty about the quantity of HRC required for the reduction of manganese, iron, or sulfate.
Related Questions
- If accessing the Project Server 2007 server via the Project Web Access Client, do they need additional software if accessing locally, ie. over the local LAN?
- What do the additional demand factor and microbial demand factor mean in the HRC software spreadsheet?
- What do the additional demand factors mean on the ORC software spreadsheet?
