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

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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.

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United States Code

Title 40 published on 2015-08-22

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

• 2015-10-22; vol. 80 # 204 - Thursday, October 22, 2015
1. 80 FR 64064 - National Pollutant Discharge Elimination System (NPDES) Electronic Reporting Rule
GPO FDSys XML | Text
ENVIRONMENTAL PROTECTION AGENCY
Final rule.
The final rule is effective on December 21, 2015. The incorporation by reference of certain publications listed in this rule was approved by the Director of the Federal Register as of February 7, 2000. In accordance with 40 CFR part 23, this regulation shall be considered issued for purposes of judicial review at 1 p.m. Eastern time on November 5, 2015. The start dates for electronic reporting are provided in 40 CFR 127.16.
40 CFR Parts 9, 122, 123, 124, 127, 403, 501, and 503

Title 40 published on 2015-08-22.

The following are only the Rules published in the Federal Register after the published date of Title 40.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

• 2015-10-22; vol. 80 # 204 - Thursday, October 22, 2015
1. 80 FR 64064 - National Pollutant Discharge Elimination System (NPDES) Electronic Reporting Rule
GPO FDSys: XML | Text
ENVIRONMENTAL PROTECTION AGENCY
Final rule.
The final rule is effective on December 21, 2015. The incorporation by reference of certain publications listed in this rule was approved by the Director of the Federal Register as of February 7, 2000. In accordance with 40 CFR part 23, this regulation shall be considered issued for purposes of judicial review at 1 p.m. Eastern time on November 5, 2015. The start dates for electronic reporting are provided in 40 CFR 127.16.
40 CFR Parts 9, 122, 123, 124, 127, 403, 501, and 503