Arizona Administrative Code
Title 18 - ENVIRONMENTAL QUALITY
Chapter 9 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER POLLUTION CONTROL
Article 10 - ARIZONA POLLUTANT DISCHARGE ELIMINATION SYSTEM - DISPOSAL, USE, AND TRANSPORTATION OF BIOSOLIDS
Section R18-9-1008 - Management Practices, Application of Biosolids to Reclamation Sites

Universal Citation: AZ Admin Code R 18-9-1008

Current through Register Vol. 30, No. 52, December 27, 2024

A. An applicator of bulk biosolids that are not exceptional quality biosolids shall comply with the following management practices at each land application site where the bulk biosolids are applied for reclamation. The applicator shall not:

1. Apply bulk biosolids unless the soil and biosolids mixture has a pH of 5.0 or higher immediately after land application;

2. Apply bulk biosolids to land with slopes greater than 6% unless:
a. The site is operating under an AZPDES permit or a permit issued under section 402 ( 33 U.S.C. 1342) or 404 ( 33 U.S.C. 1344) of the Clean Water Act;

b. The site is reclaimed as specified under A.R.S. Title 27, Chapter 5, and controls are in place to prevent runoff from leaving the application area; or

c. Runoff from the site does not reach navigable waters;

3. Apply bulk biosolids to land under the following conditions:
a. Bulk biosolids with Class A pathogen reduction. To land if the depth to groundwater is 5 feet (1.52 meters) or less;

b. Bulk biosolids with Class B pathogen reduction.
i. To land if the depth to groundwater is 10 feet (3.04 meters) or less; and

ii. To gravel, coarse or medium sands, or sands with less than 15% coarse fragments if the depth to groundwater is 40 feet (12.2 meters) or less from the point of application of biosolids;

4. Apply bulk biosolids to land that is 32.8 feet (10 meters) or less from navigable waters;

5. Store or apply bulk biosolids closer than 1000 feet (305 meters) from a public or semi-public drinking water supply well, unless the applicator justifies and the Department approves a shorter distance, or apply bulk biosolids closer than 250 feet (76.2 meters) from any other water well;

6. Store or apply bulk biosolids within 1000 feet (305 meters) of a public right-of-way or private property line unless the applicator receives permission to apply bulk biosolids from the land owner or lessee of the adjoining property;

7. Exceed a total of 150 dry tons per acre to any portion of a reclamation site if bulk biosolids are applied;

8. Apply bulk biosolids with less than 10% solids;

9. Apply bulk biosolids to land that is flooded, frozen, or snow-covered so that the bulk biosolids enter a wetland or other navigable waters, except as provided in an AZPDES permit or a permit issued under section 402 ( 33 U.S.C. 1342) or 404 ( 33 U.S.C. 1344) of the Clean Water Act;

10. Apply more water than necessary to control dust and establish vegetation; and

11. Apply bulk biosolids within 1000 feet (305 meters) of a dwelling unless the biosolids are injected or incorporated into the soil within 10 hours of being applied.

12. Store bulk biosolids within 1000 feet (305 meters) of a dwelling unless the applicator obtains permission from the dwelling owner or lessee to store the biosolids at a shorter distance from the dwelling. If the dwelling owner or lessee changes, the applicator shall obtain permission from the new dwelling owner or lessee to continue to store the bulk biosolids within 1000 feet of the dwelling or move the biosolids to a location at least 1000 feet from the dwelling.

B. The requirements of R18-9-1007(B) apply if biosolids placed in a bag or other container are used to reclaim a site.

Disclaimer: These regulations may not be the most recent version. Arizona may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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