| Water | Air | Name & Address of the Industry | Office /DEE | Type of Unit | Category | Date of issue Consent order | Validity |
| 114[04-11] | 114[04-11] | M/s. Metro Garments Kattupakkam, Chennai - 56. | Tiruvallur | Misc | Orange - Small | 11-04-2011 | 31-03-2012 |
| 115[04-11] | 115[04-11] | M/s. Rocky Industries Uthukottai Taluk, Tiruvallur District. | Tiruvallur | Steel Rolling | Orange - Small | 29-04-2011 | 31-03-2012 |
| 110[03-11] | 110[03-11] | M/s. Kaveri Industries, Gummidipoondi Taluk. | Tiruvallur | Building Materials | Orange - Small | 02-03-2011 | 31-03-2011 |
| 111[03-11] | 111[03-11] | M/s. Sri Deva Lam Pvt, Ltd, Tiruvallur Taluk. | Tiruvallur | Lamination Boards | Orange - Small | 11-03-2011 | 31-03-2011 |
| 112[03-11] | 112[03-11] | M/s. Sakthi Footwear, Kattupakkam village, Poonamallee Taluk. | Tiruvallur | Leather finish unit | Orange - Large | 17-03-2011 | 31-03-2012 |
| 113[03-11] | 113[03-11] | M/s. Ficus Pax Pvt, Ltd., Kuthambakkam village, Poonamllee Taluk. | Tiruvallur | Ply wood (wood mfg) | Orange - Large | 17-03-2011 | 31-03-2012 |
| 103[02-11] | 103[02-11] | M/s. SGR (777) Foods Pvt,Ltd, Gummidipoondi Taluk. | Tiruvallur | Food and Beverage | Orange - Mediam | 14-02-2011 | 31-03-2011 |
| 104[02-11] | 104[02-11] | M/s. Agra wire Industries Gummidipoondi Taluk. | Tiruvallur | wire Drawing (cold process) | Orange - Mediam | 14-02-2011 | 31-03-2011 |
| 105[02-11] | 105[02-11] | M/s. Madras Radiators and pressings Ltd, Gummidipoondi Taluk. | Tiruvallur | Light Engg | Orange - Mediam | 14-02-2011 | 31-03-2011 |
| 106[02-11] | 106[02-11] | M/s. Tak Plast Shoes Components (P) Ltd, Thodukadu, Tiruvallur Taluk. | Tiruvallur | Rubber Products | Orange - Mediam | 14-02-2011 | 31-03-2011 |
| 107[02-11] | 107[02-11] | M/s. Rays Concrete Pvt, Ltd Poonamallee Taluk. | Tiruvallur | Readymix concrete | Orange - Mediam | 14-02-2011 | 31-03-2011 |
| 108[02-11] | 108[02-11] | M/s. Farmulated Polymars Ltd, Poonamallee Taluk. | Tiruvallur | Misc | Orange - Large | 15-02-2011 | 31-03-2011 |
| 109[02-11] | 109[02-11] | M/s. Dover India Pvt, Ltd, Poonamallee Taluk. | Tiruvallur | Litht Engg | Orange - Large | 15-02-2011 | 31-03-2011 |
| 101[01-11] | 101[01-11] | M/s Time Technologies Ltd,Gummidipoondi TK | Tiruvallur | Plastic | Orange - Small | 11-01-2011 | 31-03-2011 |
| 102[01-11] | 102[01-11] | M/s. Sulzer Metco India Ltd, Poonammallee Tk | Tiruvallur | Light Engg Units | Orange - Mediam | 06-01-2011 | 31-03-2011 |
| 098[11-10] | 098[11-10] | M/s.SKC Dyestuff Chemical Industries Gummidipoondi Tk | Tiruvallur | Chemical Mixing | Orange - Small | 03-11-2010 | 31-03-2011 |
| 98[11-10] | 98[11-10] | M/s. Sangsin Brake India Pvt, Ltd,Tiruvallur Tk. | Tiruvallur | Brake Pad & Lining | Orange - Large | 23-11-2010 | 31-03-2011 |
| 99[11-10] | 99[11-10] | M/s. Basmak Components Pvt, Ltd,Poonamallee Tk | Tiruvallur | Injection Moulding | Orange - Large | 23-11-2010 | 31-03-2011 |
| 96[10-10] | 96[10-10] | M/s.GMR Infrastructure Ltd,Poonamallee Taluk | Tiruvallur | Ready Mix Concrete | Orange - Medium | 11-10-2010 | 31-03-2011 |
| 97[10-10] | 97[10-10] | M/s. Opel Auto Products Pvt, Ltd, Poonamallee Tk. | Tiruvallur | Electronic & Electricals | Orange - Small | 20-10-2010 | 31-03-2011 |