Current through Register Vol. 30, No. 50, December 13, 2024
Section R18-9-1005 - Pollutant ConcentrationsA. A person shall not apply biosolids with pollutant concentrations that exceed any of the ceiling concentrations established in Table 1.B. A person shall not apply biosolids sold or given away in a bag or other container that are not exceptional quality biosolids to a site if any annual pollutant loading rate in Table 3 will be exceeded. A person shall determine annual application rates using the methodology established in Appendix A.C. A person shall not apply bulk biosolids to a lawn or garden unless the biosolids are exceptional quality biosolids.D. Unless using exceptional quality biosolids, a person shall not apply bulk biosolids to a site when:1. The pollutant concentrations exceed the levels in Table 2, or2. Any cumulative pollutant loading rate in Table 4 will be exceeded. A person shall determine compliance with the site cumulative pollutant loading rates using the following:a. By identifying all known biosolids application events and information relevant to a site since September 13, 1979.b. By calculating the existing cumulative level of the pollutants established in Table 4 using actual analytical data from the application events or if actual analytical data from application events before April 1996 are not available, background concentrations determined by taking representative soil samples of the site, if it is known that the site received biosolids before April 1996.c. Background soil tests are not required for those sites that have not received biosolids before April 23, 1996. Table 1. Ceiling Concentrations
Pollutant | Ceiling concentrations (milligrams per kilogram) (1) |
Arsenic | 75.0 |
Cadmium | 85.0 |
Chromium | 3000.0 |
Copper | 4300.0 |
Lead | 840.0 |
Mercury | 57.0 |
Molybdenum | 75.0 |
Nickel | 420.0 |
Selenium | 100.0 |
Zinc | 7500.0 |
(1) Dry-weight basis.
Table 2. Monthly Average Pollutant Concentrations
Pollutant | Concentration limits (milligrams per kilogram) (1) |
Arsenic | 41.0 |
Cadmium | 39.0 |
Copper | 1500.0 |
Lead | 300.0 |
Mercury | 17.0 |
Nickel | 420.0 |
Selenium | 100.0 |
Zinc | 2800.0 |
(1) Dry-weight basis.
Table 3. Annual Pollutant Loading Rates
Pollutant | Annual pollutant loading rates (in kilograms per hectare) |
Arsenic | 2.0 |
Cadmium | 1.9 |
Copper | 75.0 |
Lead | 15.0 |
Mercury | 0.85 |
Nickel | 21.0 |
Selenium | 5.0 |
Zinc | 140.0 |
Table 4. Cumulative Pollutant Loading Rates
Pollutant | Cumulative pollutant loading rates (in kilograms per hectare) |
Arsenic | 41.0 |
Cadmium | 39.0 |
Copper | 1500.0 |
Lead | 300.0 |
Mercury | 17.0 |
Nickel | 420.0 |
Selenium | 100.0 |
Zinc | 2800.0 |
Ariz. Admin. Code § R18-9-1005
New Section recodified from R18-13-1505 at 7 A.A.R. 2522, effective May 24, 2001 (Supp. 01-2). Amended by final rulemaking at 7 A.A.R. 5879, effective December 7, 2001 (Supp. 01-4). Amended by final rulemaking at 8 A.A.R. 4923, effective January 5, 2003 (Supp. 02-4).