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

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).

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.


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.

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.

United States Code

§ 1251 - Congressional declaration of goals and policy

§ 1252 - Comprehensive programs for water pollution control

§ 1252a - Reservoir projects, water storage; modification; storage for other than for water quality, opinion of Federal agency, committee resolutions of approval;...prescribed water quality benefits in relation to total project benefits

§ 1253 - Interstate cooperation and uniform laws

§ 1254 - Research, investigations, training, and information

§ 1254a - Research on effects of pollutants

§ 1255 - Grants for research and development

§ 1256 - Grants for pollution control programs

§ 1257 - Mine water pollution control demonstrations

§ 1257a - State demonstration programs for cleanup of abandoned mines for use as waste disposal sites; authorization of appropriations

§ 1258 - Pollution control in the Great Lakes

§ 1259 - Training grants and contracts

§ 1260 - Applications; allocation

§ 1261 - Scholarships

§ 1262 - Definitions and authorizations

§ 1263 - Alaska village demonstration projects

§ 1263a - Grants to Alaska to improve sanitation in rural and Native villages

§ 1264 - Omitted

§ 1265 - In-place toxic pollutants

§ 1266 - Hudson River reclamation demonstration proj­ect

§ 1267 - Chesapeake Bay

§ 1268 - Great Lakes

§ 1269 - Long Island Sound

§ 1270 - Lake Champlain Basin Program

§ 1271 - Sediment survey and monitoring

§ 1271a - Research and development program

§ 1272 - Environmental dredging

§ 1273 - Lake Pontchartrain Basin

§ 1274 - Watershed pilot projects

§ 1345 - Disposal or use of sewage sludge

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
      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