Bjoern de Haan, BACKHUS North America

CONCLUSION OF FIRST TRIALMarch 9th to May 28th 2010- Under given weather circumstances we noticed a significant longer process time- The time frame to achieve an effective drying and a necessary temperature of more than 105 F isthree weeks for already pre-treated material and six weeks for fresh material with a DM content of18%- After achievement of temperatures higher than 122 F we were able to add fresh sludge.Every seven to ten days we added 25-50% of fresh material into that excisting windrow without goingunder a temperature of 85 F which would stop the drying processPLANNING OF SECOND TRIAL:Based on the results of our first trial we decided to have another trial which will show how much theprocess depends on different amounts of adding material.