Texas form code 504 Plain sludge from wastewater treatment.

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Based on Texas Appendix 3 and TCEQ RG-022
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Inorganic sludges
Other wastewater-treatment sludge

Pumpable wastewater-treatment sludge without the toxic-organics condition of form 503.

Pumpable inorganic wastewater-treatment sludge without toxic organics. Use it when no more specific sludge form fits.

Where does Texas form code 504 go in the Texas waste code?

In characters 5–7. The 8-character code is a 4-character stream sequence, the 3-digit form 504 and a final class character. Form 504 puts the stream in the inorganic sludges 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 504 cover?

This catch-all covers mostly inorganic, pumpable wastewater-treatment sludge when no more specific wastewater sludge form fits. The treatment source must be known, though the form names no constituent.

Category: inorganic sludges
Official wording: Appendix 3, form 504
Coding guidance: RG-022, Chapter 5 and Appendix F

Is plain wastewater-treatment sludge Texas form code 504?

Code	When it fits
504	The waste is other pumpable inorganic sludge from wastewater treatment.
503	The pumpable wastewater-treatment sludge contains toxic organic material.
391	The nonhazardous wastewater-treatment sludge has been dewatered into a solid.

Record the treatment source and the sludge composition, and why the toxic organics form doesn't fit.

Which wastes take Texas form code 504?

Waste	When it’s 504
Other inorganic wastewater-treatment sludge	The pumpable inorganic wastewater sludge fits no more specific sludge form.

Which codes sit beside Texas form code 504?

Code	What it is
501	Lime sludge without metals
502	Metal-bearing lime or metal-hydroxide sludge
505	Untreated plating sludge, no cyanides
506	Untreated plating sludge with cyanides
507	Other sludge with cyanides
508	Sludge with reactive sulfides
509	Sludge with other reactives
510	Degreasing sludge, metal scale or filings