Arizona Administrative Code (Last Updated: November 17, 2016) |
Title 18. ENVIRONMENTAL QUALITY |
Chapter 9. DEPARTMENT OF ENVIRONMENTAL QUALITY |
Article 10. ARIZONA POLLUTANT DISCHARGE ELIMINATION SYSTEM - DISPOSAL, USE, AND TRANSPORTATION OF BIOSOLIDS |
Section R18-9-1005. Pollutant Concentrations
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A. A person shall not apply biosolids with pollutant concentra- tions 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, or
2. 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 follow- ing:
a. By identifying all known biosolids application events and information relevant to a site since Sep- tember 13, 1979.
b. By calculating the existing cumulative level of the pollutants established in Table 4 using actual analyt- ical data from the application events or if actual ana- lytical 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.
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.
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.
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