Texas form code 491 Pressed-dry sludge from biological treatment.
- Free, no account
- Based on Texas Appendix 3 and TCEQ RG-022
- Nothing is stored
Find a Texas waste code
491, Dewatered biological-treatment sludge.
Organic solids
Dewatered biological-treatment sludge
Biological-treatment sludge after dewatering into an organic solid.
ComplyOnSiteWhere does Texas form code 491 go in the Texas waste code?
In characters 5–7. The 8-character code is a 4-character stream sequence, the 3-digit form 491 and a final class character. Form 491 puts the stream in the organic solids category.
The form doesn't give a hazard status. The stream's makeup, source and properties decide the class character.
For a hazardous or Class 1 shipment that needs a Uniform Hazardous Waste Manifest, enter the full Texas code in Item 13, across 2 blocks on paper. Add any EPA waste codes alongside it. The 3 form digits alone are not enough.
The generator sets the class from exclusions, federal hazardous-waste listings and characteristics, then Texas industrial-waste criteria. H means hazardous. 1, 2 and 3 are the nonhazardous industrial classes. Testing or process knowledge supports that call, and picking a form doesn't set the class.
What does Texas form code 491 cover?
This form covers sludge from biological treatment once dewatering has made it a mostly organic solid that won't pump. The treatment source and the dewatered form tell it apart from related biological sludges.
- Category
- organic solids
- Official wording
- Appendix 3, form 491
- Coding guidance
- RG-022, Chapter 5 and Appendix F
Is dewatered biological sludge Texas form code 491?
| Code | When it fits |
|---|---|
| 491 | The waste is biological-treatment sludge dewatered into an organic solid that won't pump. |
| 607 | The biological-treatment sludge still pumps. |
| 492 | The organic solid that won't pump is dewatered sewage or other untreated biological sludge. |
Dewatering changes the physical form. It doesn't show whether the biological material came from treatment or was never treated.
Which wastes take Texas form code 491?
| Waste | When it’s 491 |
|---|---|
| Dewatered biological-treatment sludge | The biological-treatment sludge has been dewatered into a solid that won't pump. |