diff --git a/src/main/java/gregtech/common/GT_Pollution.java b/src/main/java/gregtech/common/GT_Pollution.java
index c6fc5942..fac76aff 100644
--- a/src/main/java/gregtech/common/GT_Pollution.java
+++ b/src/main/java/gregtech/common/GT_Pollution.java
@@ -56,7 +56,13 @@ public class GT_Pollution {
 								if(!GT_Proxy.chunkData.containsKey(tNPos)){
 									GT_Utility.getUndergroundOil(aWorld,tPos.chunkPosX,tPos.chunkPosZ);
 								}
-								int tNPol = GT_Proxy.chunkData.get(tNPos)[1];
+								int tNPol;
+								try {
+									tNPol = GT_Proxy.chunkData.get(tNPos)[1];
+								}catch(Exception e){
+									GT_Utility.getUndergroundOil(aWorld,tPos.chunkPosX,tPos.chunkPosZ);
+									tNPol = GT_Proxy.chunkData.get(tNPos)[1];
+								}
 								if(tNPol*12 < tPollution*10){
 									int tDiff = tPollution - tNPol;
 									tDiff = tDiff/20;