40 CFR Part 503, Appendix A to Part 503 - Procedure To Determine the Annual Whole Sludge Application Rate for a Sewage Sludge

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View PDF at GPO Pt. 503, App. A
Appendix A to Part 503—Procedure To Determine the Annual Whole Sludge Application Rate for a Sewage Sludge
Section 503.13(a)(4)(ii) requires that the product of the concentration for each pollutant listed in Table 4 of § 503.13 in sewage sludge sold or given away in a bag or other container for application to the land and the annual whole sludge application rate (AWSAR) for the sewage sludge not cause the annual pollutant loading rate for the pollutant in Table 4 of § 503.13 to be exceeded. This appendix contains the procedure used to determine the AWSAR for a sewage sludge that does not cause the annual pollutant loading rates in Table 4 of § 503.13 to be exceeded.
The relationship between the annual pollutant loading rate (APLR) for a pollutant and the annual whole sludge application rate (AWSAR) for 1a sewage sludge is shown in equation (1).
Where:
APLR=Annual pollutant loading rate in kilograms per hectare per 365 day period.
C=Pollutant concentration in milligrams, per kilogram of total solids (dry weight basis).
AWSAR=Annual whole sludge application rate in metric tons per hectare per 365 day period (dry weight basis).
0.001=A conversion factor.
To determine the AWSAR, equation (1) is rearranged into equation (2):
The procedure used to determine the AWSAR for a sewage sludge is presented below.
Procedure:
1. Analyze a sample of the sewage sludge to determine the concentration for each of the pollutants listed in Table 4 of § 503.13 in the sewage sludge.
2. Using the pollutant concentrations from Step 1 and the APLRs from Table 4 of § 503.13, calculate an AWSAR for each pollutant using equation (2) above.
3. The AWSAR for the sewage sludge is the lowest AWSAR calculated in Step 2.

Title 40 published on 2014-07-01

no entries appear in the Federal Register after this date.

Title 40 published on 2014-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR 503 after this date.

  • 2014-11-13; vol. 79 # 219 - Thursday, November 13, 2014
    1. 79 FR 67409 - Propose and Modify NPDES General Permits for Facilities That Generate, Treat, and/or Use/Dispose of Sewage Sludge by Land Application, Landfill and Surface Disposal in the EPA Region 8
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY REGION 8, The Environmental Protection Agency
      Notice of proposed and final modification of the expiration date of the eleven (11) NPDES general permits for Sewage Sludge.
      This comment period closes on December 15, 2014. Comments may be directed to: Bob Brobst (8P-W-WW), EPA Region 8, 1595 Wynkoop Street, Denver, Colorado 80202-1129. All comments received prior to the end of the comment period will be considered in the formulation of the final permit decision. After considering these comments, the EPA will issue the final permit decision together with written responses to any significant comments, in accordance with 40 CFR 124.15. If no comments are received, the modification of the 11 permits will be effective immediately upon issuance of the final permit decision.
      40 CFR Part 503