diff --git a/composer/callbacks/runtime_estimator.py b/composer/callbacks/runtime_estimator.py
index 7fcfeaac81..8833c8c8a2 100644
--- a/composer/callbacks/runtime_estimator.py
+++ b/composer/callbacks/runtime_estimator.py
@@ -6,7 +6,7 @@
 
 import time
 import warnings
-from typing import Any, Dict, List, Optional
+from typing import Dict, List, Optional
 
 from composer.core import Callback, State, TimeUnit
 from composer.loggers import Logger
@@ -80,20 +80,6 @@ def __init__(self, skip_batches: int = 1, time_unit: str = 'hours') -> None:
         self.eval_frequency_per_label: Dict[str, float] = {}
         self.last_elapsed_fraction: float = 0.0
 
-    def state_dict(self) -> Dict[str, Any]:
-        return {
-            'total_eval_wct': self.total_eval_wct,
-            'eval_wct_per_label': self.eval_wct_per_label,
-            'eval_frequency_per_label': self.eval_frequency_per_label,
-            'last_elapsed_fraction': self.last_elapsed_fraction,
-        }
-
-    def load_state_dict(self, state: Dict[str, Any]) -> None:
-        self.total_eval_wct = state['total_eval_wct']
-        self.eval_wct_per_label = state['eval_wct_per_label']
-        self.eval_frequency_per_label = state['eval_frequency_per_label']
-        self.last_elapsed_fraction = state['last_elapsed_fraction']
-
     def _get_elapsed_duration(self, state: State) -> Optional[float]:
         """Get the elapsed duration.
 
@@ -130,7 +116,7 @@ def batch_end(self, state: State, logger: Logger) -> None:
             return
 
         elapsed_dur = self._get_elapsed_duration(state)
-        assert elapsed_dur is not None, 'max_duration checked as non-None on batch_start'
+        assert elapsed_dur is not None, 'max_duration checked as non-None on batch_start if enabled'
 
         assert self.start_dur is not None
         assert self.start_time is not None
@@ -168,7 +154,9 @@ def eval_end(self, state: State, logger: Logger) -> None:
         if state.dataloader_label not in self.eval_wct_per_label:
             self.eval_wct_per_label[state.dataloader_label] = []
         self.eval_wct_per_label[state.dataloader_label].append(state.eval_timestamp.total_wct.total_seconds())
-        elapsed_fraction = self._get_elapsed_duration(state)
-        assert elapsed_fraction is not None, 'max_duration checked as non-None on batch_start'
+        elapsed_dur = self._get_elapsed_duration(state)
+        assert elapsed_dur is not None, 'max_duration checked as non-None on batch_start if enabled'
+        assert self.start_dur is not None, 'start_dur is set on batch_start if enabled'
+        elapsed_fraction = elapsed_dur - self.start_dur
         num_evals_finished = len(self.eval_wct_per_label[state.dataloader_label])
         self.eval_frequency_per_label[state.dataloader_label] = elapsed_fraction / num_evals_finished