| 1. | Superintending Engineer (Property) |
| 2. | AST - Superintending Engineer (Industrial Pollution and Climate Change Prevention) |
| 3. | JD (WPC) - Superintending Engineer (Water Pollution Prevention) |
| 4. | JD (APC) - Superintending Engineer (Air Pollution Prevention) |
| 5. | Sub Regional Officer |
| 6. | Executive Engineer |
| 7. | Public Relations Officer |
| 8. | Circular Seniority List Category-A |
| 9. | Principal Scientific Officer |
| 10. | Administrative Officer and Accounts Officer |
| 11. | Regional Officer |
| 12. | Chief Engineer |
| 13. | Chief Administrative Officer |
| 14. | Chief Accounts Officer |
| 15. | Chief Accounts and Finance Officer |
| 16. | Chief Scientific Officer |
| 17. | Systems Officer |
| 18. | Chief Systems Officer |
| 19. | Senior Legal Officer |
| 20. | Senior Scientific Officer |
| 21. | Legal Officer |
| 22. | Scientific Officer |
| 23. | Statistical Officer |
| 24. | Sub-Engineer |
| 25. | Junior Scientific Officer |
| 26. | Field Officer |
| 27. | Circular Seniority List Category-B |
| 28. | Assistant Systems Officer |
| 29. | Assistant Accounts Officer |
| 30. | Assistant Legal Officer |
| 31. | Tracer |
| 32. | Junior Stenographer |
| 33. | Junior Clerk |
| 34. | Junior Scientific Assistant |
| 35. | Chaukidar |
| 36. | Daptri |
| 37. | Circular Seniority List Category-C & D |
| 38. | Chief Accountant |
| 39. | Laboratory Assistant |
| 40. | Senior Stenographer |
| 41. | Senior Clerk |
| 42. | Driver |
| 43. | Legal Assistant |
| 44. | Electrician |
| 45. | Peon |
| 46. | Sweeper |
| 47. | Assistant Public Relations Officer |
| 48. | Statistical Assistant |