30 Tex. Admin. Code § 312.49 – Procedure to Determine the Annual Whole Application Rate for Biosolids and Domestic Septage

(a) This subsection contains the procedure used to determine the annual whole application rate (AWAR) for a biosolids that does not cause the annual metal loading rates in Table 4 of §312.43(b)(4) of this title (relating to Metal Limits) to be exceeded. Determine the AWAR using the following procedure.
1. (1) Analyze a sample of the biosolids to determine the concentration for each of the metals listed in Table 4 of §312.43 of this title.
2. (2) Using the metal concentrations from paragraph (1) of this subsection and the AMLRs from Table 4 of §312.43 of this title, calculate an AWAR for each metal using Equation B.1.
3. (3) The AWAR for the biosolids is the lowest AWAR calculated in paragraph (2) of this subsection.
  Attached Graphic
(b) Domestic Septage. The annual whole application rate for domestic septage applied to agricultural land, forest, or a reclamation site shall be equal to or less than the annual whole application rate calculated using Equation B.2.
Attached Graphic

Source Note:The provisions of this §312.49 adopted to be effective October 13, 1995, 20 TexReg 7840; amended to be effective April 23, 2020, 45 TexReg 2542.