diff --git a/src/main/java/gov/usgs/earthquake/nshmp/gmm/AbrahamsonGulerce_2020.java b/src/main/java/gov/usgs/earthquake/nshmp/gmm/AbrahamsonGulerce_2020.java
index 0a16d036b37aab0a478363503cdfaaab61bae657..e6b9b15e10546c0084c86403e7ffb7cb8619b0c8 100644
--- a/src/main/java/gov/usgs/earthquake/nshmp/gmm/AbrahamsonGulerce_2020.java
+++ b/src/main/java/gov/usgs/earthquake/nshmp/gmm/AbrahamsonGulerce_2020.java
@@ -538,7 +538,7 @@ public abstract class AbrahamsonGulerce_2020 implements GroundMotionModel {
     static final String NAME = CascadiaAdjustedInterface.NAME + " (Seattle basin)";
 
     SeattleAdjustedInterfaceBasin(Imt imt) {
-      super(imt, Gmm.AG_20_SEATTLE_ADJ_INTERFACE_BASIN);
+      super(imt, Gmm.AG_20_SEATTLE_M9_ADJ_INTERFACE_BASIN);
     }
 
     @Override
@@ -583,7 +583,7 @@ public abstract class AbrahamsonGulerce_2020 implements GroundMotionModel {
     static final String NAME = CascadiaInterface.NAME + " (Seattle basin)";
 
     SeattleInterfaceBasin(Imt imt) {
-      super(imt, Gmm.AG_20_SEATTLE_INTERFACE_BASIN);
+      super(imt, Gmm.AG_20_SEATTLE_M9_INTERFACE_BASIN);
     }
 
     @Override
diff --git a/src/main/java/gov/usgs/earthquake/nshmp/gmm/Gmm.java b/src/main/java/gov/usgs/earthquake/nshmp/gmm/Gmm.java
index 6cb01c5b4feed15c580734b85ae176d4a8690441..c25d80a1f648bcb25b409dec9d2fc7c15f3b02eb 100644
--- a/src/main/java/gov/usgs/earthquake/nshmp/gmm/Gmm.java
+++ b/src/main/java/gov/usgs/earthquake/nshmp/gmm/Gmm.java
@@ -373,7 +373,7 @@ public enum Gmm {
       AbrahamsonGulerce_2020.CONSTRAINTS_INTERFACE),
 
   /** @see AbrahamsonGulerce_2020 */
-  AG_20_SEATTLE_INTERFACE_BASIN(
+  AG_20_SEATTLE_M9_INTERFACE_BASIN(
       AbrahamsonGulerce_2020.SeattleInterfaceBasin.class,
       AbrahamsonGulerce_2020.SeattleInterfaceBasin.NAME,
       AbrahamsonGulerce_2020.COEFFS,
@@ -394,7 +394,7 @@ public enum Gmm {
       AbrahamsonGulerce_2020.CONSTRAINTS_INTERFACE),
 
   /** @see AbrahamsonGulerce_2020 */
-  AG_20_SEATTLE_ADJ_INTERFACE_BASIN(
+  AG_20_SEATTLE_M9_ADJ_INTERFACE_BASIN(
       AbrahamsonGulerce_2020.SeattleAdjustedInterfaceBasin.class,
       AbrahamsonGulerce_2020.SeattleAdjustedInterfaceBasin.NAME,
       AbrahamsonGulerce_2020.COEFFS,
@@ -471,7 +471,7 @@ public enum Gmm {
       ParkerEtAl_2020.CONSTRAINTS_INTERFACE),
 
   /** @see ParkerEtAl_2020 */
-  PSBAH_20_SEATTLE_INTERFACE_BASIN(
+  PSBAH_20_SEATTLE_M9_INTERFACE_BASIN(
       ParkerEtAl_2020.SeattleInterfaceBasin.class,
       ParkerEtAl_2020.SeattleInterfaceBasin.NAME,
       ParkerEtAl_2020.COEFFS_INTERFACE,
@@ -1401,10 +1401,13 @@ public enum Gmm {
             AG_20_CASCADIA_INTERFACE,
             AG_20_CASCADIA_SLAB,
             AG_20_CASCADIA_ADJ_INTERFACE,
+            AG_20_CASCADIA_ADJ_INTERFACE,
             AG_20_CASCADIA_ADJ_SLAB,
             AG_20_CASCADIA_INTERFACE_BASIN,
+            AG_20_SEATTLE_M9_INTERFACE_BASIN,
             AG_20_CASCADIA_SLAB_BASIN,
             AG_20_CASCADIA_ADJ_INTERFACE_BASIN,
+            AG_20_SEATTLE_M9_ADJ_INTERFACE_BASIN,
             AG_20_CASCADIA_ADJ_SLAB_BASIN,
             AG_20_ALASKA_INTERFACE,
             AG_20_ALASKA_SLAB,
@@ -1415,6 +1418,7 @@ public enum Gmm {
             KBCG_20_CASCADIA_INTERFACE,
             KBCG_20_CASCADIA_SLAB,
             KBCG_20_CASCADIA_INTERFACE_BASIN,
+            KBCG_20_SEATTLE_M9_INTERFACE_BASIN,
             KBCG_20_CASCADIA_SLAB_BASIN,
             KBCG_20_ALASKA_INTERFACE,
             KBCG_20_ALASKA_SLAB,
@@ -1423,6 +1427,7 @@ public enum Gmm {
             PSBAH_20_CASCADIA_INTERFACE,
             PSBAH_20_CASCADIA_SLAB,
             PSBAH_20_CASCADIA_INTERFACE_BASIN,
+            PSBAH_20_SEATTLE_M9_INTERFACE_BASIN,
             PSBAH_20_CASCADIA_SLAB_BASIN,
             PSBAH_20_ALASKA_INTERFACE,
             PSBAH_20_ALASKA_SLAB)),