diff --git a/CHANGELOG.md b/CHANGELOG.md
index cefbe9ea..d67f633f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Cleaned up SU AMIP instance RC files; fixed path for degassing volcanic emissions
+  in AMIP.20C and removed unneccessary rhFlag from both AMIP dirs
 - Calculation of surface area density and effective radius for connection to chemistry
   now comes from optics tables
 - Changed effective radius in MieQuery.H to remove in place units scaling; made
diff --git a/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP.20C/SU2G_instance_SU.rc b/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP.20C/SU2G_instance_SU.rc
index df3abf38..0983bbc1 100644
--- a/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP.20C/SU2G_instance_SU.rc
+++ b/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP.20C/SU2G_instance_SU.rc
@@ -9,7 +9,7 @@ nbins: 4
 
 # Volcanic pointwise sources
 volcano_srcfilen_explosive: ExtData/chemistry/CARN/v202401/explosive/so2_explosive_volcanic_emissions_CARN_v202401.%y4%m2%d2.rc
-volcano_srcfilen_degassing: ExtData/chemistry/CARN/v202401/so2_volcanic_emissions_CARN_v202401.degassing_only.rc
+volcano_srcfilen_degassing: ExtData/chemistry/CARN/v202401/sfc/so2_volcanic_emissions_CARN_v202401.degassing_only.rc
 
 # Heights [m] of LTO, CDS and CRS aviation emissions layers
 aviation_vertical_layers: 0.0 100.0 9.0e3 10.0e3
@@ -37,9 +37,6 @@ fwet: 1.0 1.0 1.0 1.0
 # Dry particle radius [um], used for settling
 particle_radius_microns: 0.0 0.0 0.35 0.0
 
-# Type of settling to use (see Chem_SettlingMod)
-rhFlag: 4
-
 # Dry particle density [kg m-3]
 particle_density: -1  -1  1700  -1
 
diff --git a/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP/SU2G_instance_SU.rc b/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP/SU2G_instance_SU.rc
index 99abd14c..0983bbc1 100644
--- a/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP/SU2G_instance_SU.rc
+++ b/ESMF/GOCART2G_GridComp/SU2G_GridComp/AMIP/SU2G_instance_SU.rc
@@ -37,9 +37,6 @@ fwet: 1.0 1.0 1.0 1.0
 # Dry particle radius [um], used for settling
 particle_radius_microns: 0.0 0.0 0.35 0.0
 
-# Type of settling to use (see Chem_SettlingMod)
-rhFlag: 4
-
 # Dry particle density [kg m-3]
 particle_density: -1  -1  1700  -1