2. NESEC Meeting What is meant by “Variability”

3. Variability ProcessProcess FermentationFermentation Control EquipmentControl Equipment SeasonsSeasons

4. Emission Data 2 sources with frequent testing are used for this presentation.2 sources with frequent testing are used for this presentation.

5. Source 1 16 CO 2 scrubber performance tests16 CO 2 scrubber performance tests Jan 2008 – May 2010Jan 2008 – May 2010

6. 80 gpm &100 ml/min

7. 80 gpm 100 ml/min

8. 80 gpm &100 ml/min 97 gpm 91 ml/min

9. 80 gpm &100 ml/min 110 gpm 192 ml/min

10. 80 gpm &100 ml/min 120 gpm 106 - 138 ml/min

11. 80 gpm &100 ml/min 120 gpm 124 - 157 ml/min

12. 80 gpm &100 ml/min 120 gpm 139 - 156 ml/min

13. 80 gpm &100 ml/min 175 gpm 132 - 169 ml/min

14. 80 gpm &100 ml/min 120 gpm 115 ml/min

15. 80 gpm &100 ml/min 120 gpm 120 ml/min

16. 80 gpm &100 ml/min 110 gpm 185 ml/min

17. 80 gpm &100 ml/min 100 gpm 120 ml/min

18. 80 gpm &100 ml/min 100 gpm 120 ml/min

19. 80 gpm &100 ml/min 100 gpm 120 ml/min

20. 80 gpm &100 ml/min 100 gpm 120 ml/min

21. 80 gpm &100 ml/min 100 gpm 120 ml/min

22. 80 gpm &100 ml/min 115 gpm 120 ml/min

23. Water to Scrubber Gallons of water (gpm) 1751201151101009780 VOC(lb/hr)8.085.1-14.05.044.9-5.75.5-6.66.852.07 Acetaldehyde(lb/hr)0.340.34-0.720.320.30-0.520.38-0.482.010.43

25. Chemical to Scrubber Chemical to scrubber ml/min19218517016015514012011510091 VOCLb/hr4.975.78.0814.18.215.62 5.04 - 6.61 6.652.076.85 ACE(lb/hr)0.300.520.340.720.530.600.32 - 0.49 0.320.432.01

26. Difference from test to test VOCDiffVOCDiff Test 1 2.07 Test 9 5.04-24.2% Test 2 6.85230.9% Test 10 5.11.19% Test 3 4.97-27.45% Test 11 5.711.7% Test 4 5.6213.07% Test 12 5.56-2.45% Test 5 14.06150.2% Test 13 6.6118.8% Test 6 8.21-41.6% Test 14 5.48-17.1% Test 7 8.08-1.58% Test 15 15.18177% Test 8 6.65-17.7% Test 16 5.15-66.1%

27. Difference from test to test AceDiffAceDiff Test 1 0.429 Test 9 0.3241.56% Test 2 2.01368.5% Test 10 0.3446.17% Test 3 0.301-85.02% Test 11 0.52251.74% Test 4 0.604100.6% Test 12 0.3827.2% Test 5 0.71718.7% Test 13 0.48728.2% Test 6 0.52926.2% Test 14 0.42712.3% Test 7 0.33935.7% Test 15 0.4617.9% Test 8 0.3196.12% Test 16 0.33128.2%

28. Source 2 7 CO 2 performance test March 2009 – March 20107 CO 2 performance test March 2009 – March 2010

29. 15 gpm well & 15 gpm RO 107 ml/min

30. 20 gpm well & 20 gpm RO 95 ml/min

31. 30 gpm well & 20 gpm RO 133 ml/min

32. 20 gpm well & 10 gpm RO 100 ml/min

33. 25 gpm well & 10 gpm RO 115 ml/min

34. 20 gpm well & 10 gpm RO 103 ml/min

35. 20 gpm well & 10 gpm RO *new Chemical 43 ml/min

36. Water to Scrubber Gallons of water (gpm) 15/1520/2030/2020/1025/1020/10 VOC(lb/hr)4.973.352.729.13.542.45-6.94 Acetaldehyde(lb/hr)0.370.450.291.00.50.21-1.0

37. Chemical to Scrubber Chemical to scrubber ml/min1331151071031009543* VOCLb/hr2.723.544.972.459.13.356.94 ACE(lb/hr)0.290.500.3740.2151.00.451.0 * Different chemical used

38. Difference from test to test VOCDifference Test 1 4.97 Test 2 3.35 -32.5 % Test 3 2.72 -18.8 % Test 4 9.1 234.6 % Test 5 3.54 -61.0 % Test 6 2.45 -30.9 % Test 7 6.94 183.3 %

39. Difference from test to test AceDifference Test 1 0.374 Test 2 0.451 20.4 % Test 3 0.293 -34.9 % Test 4 1.0 241.2 % Test 5 0.50 -50 % Test 6 0.215 -57.1 % Test 7 1.0 369.1 %

40. Fermentation Leaks PRV’sPRV’s Man wayMan way

41. PRV Leaks

43. Click PRV

44. Thank You Questions? Ken Almquist Unit Supervisor Air Quality Compliance Section (402) 471-2186 ken.almquist@nebraska.gov