diff --git a/src/__mocks__/environment.ts b/src/__mocks__/environment.ts
new file mode 100644
index 0000000..6f0b850
--- /dev/null
+++ b/src/__mocks__/environment.ts
@@ -0,0 +1,5 @@
+export const PARKING_LOGGING_INTERVAL_MS = 10000;
+
+export const PARKING_HISTORICAL_AVERAGE_MINIMUM_INTERVAL = 1000;
+
+export const PARKING_HISTORICAL_AVERAGE_MAXIMUM_TIMESPAN = 60000 * 60 * 24;
diff --git a/src/environment.ts b/src/environment.ts
new file mode 100644
index 0000000..6037926
--- /dev/null
+++ b/src/environment.ts
@@ -0,0 +1,11 @@
+export const PARKING_LOGGING_INTERVAL_MS = process.env.PARKING_LOGGING_INTERVAL_MS
+  ? parseInt(process.env.PARKING_LOGGING_INTERVAL_MS)
+  : 600000; // Every 10 minutes
+
+export const PARKING_HISTORICAL_AVERAGE_MINIMUM_INTERVAL = process.env.PARKING_HISTORICAL_AVERAGE_MINIMUM_INTERVAL
+  ? parseInt(process.env.PARKING_HISTORICAL_AVERAGE_MINIMUM_INTERVAL)
+  : 60000 * 60 * 2;
+
+export const PARKING_HISTORICAL_AVERAGE_MAXIMUM_TIMESPAN = process.env.PARKING_HISTORICAL_AVERAGE_MAXIMUM_TIMESPAN
+  ? parseInt(process.env.PARKING_HISTORICAL_AVERAGE_MAXIMUM_TIMESPAN)
+  : 60000 * 60 * 24;
diff --git a/src/repositories/parking/InMemoryParkingRepository.ts b/src/repositories/parking/InMemoryParkingRepository.ts
index 6cd68aa..84cea32 100644
--- a/src/repositories/parking/InMemoryParkingRepository.ts
+++ b/src/repositories/parking/InMemoryParkingRepository.ts
@@ -5,7 +5,7 @@ import {
 } from "../../entities/ParkingRepositoryEntities";
 import { HistoricalParkingAverageQueryResult, HistoricalParkingAverageQueryArguments } from "./ParkingGetterRepository";
 import { CircularQueue } from "../../types/CircularQueue";
-import { PARKING_LOGGING_INTERVAL_MS } from "./ParkingRepositoryConstants";
+import { PARKING_LOGGING_INTERVAL_MS } from "../../environment";
 
 // If every 10 minutes, two weeks of data (6x per hour * 24x per day * 7x per week * 2)
 export const MAX_NUM_ENTRIES = 2016;
diff --git a/src/repositories/parking/ParkingRepositoryConstants.ts b/src/repositories/parking/ParkingRepositoryConstants.ts
deleted file mode 100644
index 4d8b30e..0000000
--- a/src/repositories/parking/ParkingRepositoryConstants.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export const PARKING_LOGGING_INTERVAL_MS = process.env.PARKING_LOGGING_INTERVAL_MS
-  ? parseInt(process.env.PARKING_LOGGING_INTERVAL_MS)
-  : 600000; // Every 10 minutes