diff --git a/workflow/applications/applications.py b/workflow/applications/applications.py
index b7fb605e09..d73f2dc996 100644
--- a/workflow/applications/applications.py
+++ b/workflow/applications/applications.py
@@ -2,7 +2,7 @@
 
 from typing import Dict, List, Any
 from hosts import Host
-from wxflow import Configuration, to_timedelta
+from wxflow import Configuration
 from abc import ABC, ABCMeta, abstractmethod
 
 __all__ = ['AppConfig']
@@ -41,7 +41,6 @@ def __init__(self, conf: Configuration) -> None:
                                       f'{", ".join(self.VALID_MODES)}\n')
 
         self.net = base['NET']
-        self.interval_gfs = to_timedelta(f"{base.get('INTERVAL_GFS')}H")
         print(f"Generating the XML for a {self.mode}_{self.net} case")
 
     def _init_finalize(self, conf: Configuration):
diff --git a/workflow/applications/gfs_cycled.py b/workflow/applications/gfs_cycled.py
index 25977192a7..bc24cd84d4 100644
--- a/workflow/applications/gfs_cycled.py
+++ b/workflow/applications/gfs_cycled.py
@@ -1,6 +1,6 @@
 from applications.applications import AppConfig
 from typing import Dict, Any
-from wxflow import Configuration, to_timedelta
+from wxflow import Configuration
 
 
 class GFSCycledAppConfig(AppConfig):
@@ -26,7 +26,7 @@ def __init__(self, conf: Configuration):
         # Now construct self.runs the desired XML order (gdas, enkfgdas, gfs, enkfgfs)
         self.runs = ["gdas"]  # We always have a 'gdas' run
         self.runs.append('enkfgdas') if 'gdas' in self.ens_runs else 0
-        self.runs.append("gfs") if base['interval_gfs'] > to_timedelta("0H") else 0
+        self.runs.append("gfs") if base['INTERVAL_GFS'] > 0 else 0
         self.runs.append('enkfgfs') if 'gfs' in self.ens_runs and "gfs" in self.runs else 0
 
     def _get_run_options(self, conf: Configuration) -> Dict[str, Any]:
diff --git a/workflow/rocoto/gefs_xml.py b/workflow/rocoto/gefs_xml.py
index a5dfd5140e..b41a172a2a 100644
--- a/workflow/rocoto/gefs_xml.py
+++ b/workflow/rocoto/gefs_xml.py
@@ -16,7 +16,7 @@ def __init__(self, app_config: AppConfig, rocoto_config: Dict) -> None:
     def get_cycledefs(self):
         sdate = self._base['SDATE_GFS']
         edate = self._base['EDATE']
-        interval = self._app_config.interval_gfs
+        interval = to_timedelta("{self._base['INTERVAL_GFS']}H")
         sdate_str = sdate.strftime("%Y%m%d%H%M")
         edate_str = edate.strftime("%Y%m%d%H%M")
         interval_str = timedelta_to_HMS(interval)
diff --git a/workflow/rocoto/gfs_cycled_xml.py b/workflow/rocoto/gfs_cycled_xml.py
index eef77ba7fc..000a7adef8 100644
--- a/workflow/rocoto/gfs_cycled_xml.py
+++ b/workflow/rocoto/gfs_cycled_xml.py
@@ -24,7 +24,7 @@ def get_cycledefs(self):
         sdate_str = sdate.strftime("%Y%m%d%H%M")
         strings.append(f'\t<cycledef group="gdas">{sdate_str} {edate_str} {interval_str}</cycledef>')
 
-        interval_gfs = self._app_config.interval_gfs
+        interval_gfs = to_timedelta("{self._base['INTERVAL_GFS']}H")
 
         if interval_gfs > to_timedelta("0H"):
             sdate_gfs = self._base['SDATE_GFS']
diff --git a/workflow/rocoto/gfs_forecast_only_xml.py b/workflow/rocoto/gfs_forecast_only_xml.py
index a4d5b0878b..fa31329176 100644
--- a/workflow/rocoto/gfs_forecast_only_xml.py
+++ b/workflow/rocoto/gfs_forecast_only_xml.py
@@ -14,15 +14,15 @@ def __init__(self, app_config: AppConfig, rocoto_config: Dict) -> None:
     def get_cycledefs(self):
         sdate_gfs = self._base['SDATE_GFS']
         edate_gfs = self._base['EDATE']
-        interval_gfs = self._app_config.interval_gfs
+        interval_gfs = to_timedelta("{self._base['INTERVAL_GFS']}H")
         strings = []
         sdate_gfs_str = sdate_gfs.strftime("%Y%m%d%H%M")
         edate_gfs_str = edate_gfs.strftime("%Y%m%d%H%M")
         interval_gfs_str = timedelta_to_HMS(interval_gfs)
         strings.append(f'\t<cycledef group="gfs">{sdate_gfs_str} {edate_gfs_str} {interval_gfs_str}</cycledef>')
 
-        date2 = sdate_gfs + interval_gfs
-        if date2 <= edate_gfs:
+        date2_gfs = sdate_gfs + interval_gfs
+        if date2_gfs <= edate_gfs:
             date2_gfs_str = date2_gfs.strftime("%Y%m%d%H%M")
             strings.append(f'\t<cycledef group="gfs_seq">{date2_gfs_str} {edate_gfs_str} {interval_gfs_str}</cycledef>')
 
diff --git a/workflow/rocoto/gfs_tasks.py b/workflow/rocoto/gfs_tasks.py
index 7f92bd1c82..172d38a56b 100644
--- a/workflow/rocoto/gfs_tasks.py
+++ b/workflow/rocoto/gfs_tasks.py
@@ -336,7 +336,7 @@ def atmanlinit(self):
             dependencies = rocoto.create_dependency(dep=deps)
 
         interval_gfs = self._base["INTERVAL_GFS"]
-        gfs_enkf = True if self.options['do_hybvar'] and 'gfs' in self.options['ens_runs'] else False
+        gfs_enkf = True if self.options['do_hybvar'] and 'gfs' in self.app_config.ens_runs else False
 
         cycledef = self.run
         if self.run in ['gfs'] and gfs_enkf and interval_gfs != 6:
@@ -875,7 +875,7 @@ def _fcst_forecast_only(self):
             # Calculate offset based on RUN = gfs | gdas
             interval = None
             if self.run in ['gfs']:
-                interval = to_timedelta(f"{self._base['INTERVAL_GFS']}H")
+                interval = self._base['INTERVAL_GFS']
             elif self.run in ['gdas']:
                 interval = self._base['assim_freq']
             offset = timedelta_to_HMS(-interval)
@@ -1832,8 +1832,8 @@ def metp(self):
         deps = []
         dep_dict = {'type': 'task', 'name': f'{self.run}_arch'}
         deps.append(rocoto.add_dependency(dep_dict))
-        if self.app_config.interval_gfs < to_timedelta('24H'):
-            n_lookback = self.app_config.interval_gfs // to_timedelta('6H')
+        if self._base["interval_gfs"] < to_timedelta("24H"):
+            n_lookback = self._base["interval_gfs"] // to_timedelta("6H")
             for lookback in range(1, n_lookback + 1):
                 deps2 = []
                 dep_dict = {'type': 'taskvalid', 'name': f'{self.run}_arch', 'condition': 'not'}