| Water | Air | Name & Address of the Industry | Office / DEE | Type of Unit | Category | Date of Issue of Consent Order | Validity |
| 775[10-10] | 775[10-10] | M/s. A .K .M Engineering Works, S.F.No.45Pt, Vellanur Village, Ambattur Taluk, Tiruvallur District | Ambattur | Tank Bracket short | Orange - Small | 22-10-2010 | Two Years |
| 774[10-10] | 774[10-10] | M/s. Bhuvana Enterprises, S.F.No.149Pt, Vellanur Village, Ambattur Taluk, Tiruvallur District | Ambattur | Material Handling Equipment Parts | Orange - Small | 22-10-2010 | Two Years |
| 777[10-10] | 777[10-10] | M/s. Hari Engineering Works, S.F.No. 44/1Pt, Vellanur Village, Ambattur Taluk, Tiruvallur District | Ambattur | Bolts | Orange - Small | 27-10-2010 | Two Years |
| 778[10-10] | 778[10-10] | M/s. Mukil Industries, S.F.No.44/1 Pt, Vellanur Village, Ambattur Taluk, Tiruvallur District | Ambattur | Pressure Vessels | Orange - Small | 27-10-2010 | Two Years |
| 773[10-10] | 773[10-10] | M/s. New Machine Tools, S.F.No.155 Pt, Vellanur Village, Ambattur Taluk, Tiruvallur District | Ambattur | Machine Clading | Orange - Small | 22-10-2010 | Two Years |
| 776[10-10] | 776[10-10] | M/s. Sakthi Enterprises, S.F.No. 156 Pt, Vellanur Village, Ambattur Taluk, Tiruvallur District | Ambattur | Spm Base | Orange - Small | 22-10-2010 | Two Years |
| 780[10-10] | 780[10-10] | M/s. Vijay Industries, S.F.No. 166Pt, Vellanur Village, Ambattur Taluk, Tiruvallur District | Ambattur | Convey Pully | Orange - Small | 27-10-2010 | Two Years |
| 781[10-10] | 781[10-10] | M/s. Vinitha Industries, S.F.No.45Pt, Vellanur Village, Ambattur Taluk, Tiruvallur District | Ambattur | Vessels | Orange - Small | 27-10-2010 | Two Years |
| 779[10-10] | 779[10-10] | M/s. V.S Industries, S.F.No. 44/1Pt, Vellanur Village, Ambattur Taluk, Tiruvallur District | Ambattur | Guide Rod | Orange - Small | 27-10-2010 | Two Years |