The CTS: Contaminant Treatment Systems pane is is on the MODFLOW Packages and Programs dialog box under MT3DMS or MT3D-USGS. It is used to specify some of the data for the CTS package in MT3D-USGS. The CTS package is not included with MT3DMS.
In addition to comments, there are two variables that are specified in the CTS: Contaminant Treatment Systems pane: IFORCE and ICtSPKG.
IFORCE is a flag to force concentration in treatment systems to satisfy specified concentration/mass values based on the treatment option selected without considering whether treatment is necessary or not. This flag is ignored if the “no treatment” option is selected in the Contaminant Treatment Systems dialog box.
If IFORCE = 0, concentration for all injection wells is set to satisfy treatment levels only if blended concentration exceeds the desired concentration/mass level for a treatment system. If the blended concentration in a treatment system is less than the specified concentration/mass level, then injection wells inject water with blended concentrations.
If IFORCE = 1, concentration for all injection wells is forced to satisfy specified concentration/mass values.
The Max Allowed Concentration tab on the Contaminant Treatment Systems dialog box is only visible if IFORCE = 0.
ICTSPKG –is a flag to identify the MODFLOW well (WEL or MNW2) package that the CTS package will work with, i.e. flow rates associated with the MODFLOW package identified using this flag will be used with the CTS package.
The remaining input for the CTS is specified in the Contaminant Treatment Systems dialog box.
