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 R18-9-1001 - Definitions

Current through Register Vol. 30, No. 28, July 12, 2024
In addition to the definitions in A.R.S. §
									49-255 and
				  R18-9-A901, the
				  following terms apply to this Article:
1. "Aerobic digestion" means the biochemical decomposition of
				  organic matter in biosolids into carbon dioxide and water by microorganisms in
				  the presence of air.
2. "Agronomic rate" means the whole biosolids application
				  rate on a dry-weight basis that meets the following conditions:
a. The amount of nitrogen needed by existing vegetation or a
				  planned or actual crop has been provided, and
b. The amount of nitrogen that passes below the root zone of
				  the crop or vegetation is minimized.
3. "Anaerobic digestion" means the biochemical decomposition
				  of organic matter in biosolids into methane gas and carbon dioxide by
				  microorganisms in the absence of air.
4. "Annual biosolids application rate" means the maximum
				  amount of biosolids (dry-weight basis) that can be applied to an acre or
				  hectare of land during a 365-day period.
5. "Annual pollutant loading rate" means the maximum amount
				  of a pollutant that can be applied to an acre or hectare of land during a
				  365-day period.
6. "Applicator" means a person who arranges for and controls
				  the site-specific land application of biosolids in Arizona.
7. "Biosolids" means sewage sludge, including exceptional
				  quality biosolids, that is placed on, or applied to the land to use the
				  beneficial properties of the material as a soil amendment, conditioner, or
				  fertilizer. Biosolids do not include any of the following:
a. Sludge determined to be hazardous under A.R.S. Title 49,
				  Chapter 5, Article 2 and 40 CFR 261;
b. Sludge with a concentration of polychlorinated biphenyls
				  (PCBs) equal to or greater than 50 milligrams per kilogram of total solids
				  (dry-weight basis);
c. Grit (for example, sand, gravel, cinders, or other
				  materials with a high specific gravity) or screenings generated during
				  preliminary treatment of domestic sewage by a treatment works;
d. Sludge generated during the treatment of either surface
				  water or groundwater used for drinking water;
e. Sludge generated at an industrial facility during the
				  treatment of industrial wastewater, including industrial wastewater combined
				  with domestic sewage;
f. Commercial septage, industrial septage, or domestic
				  septage combined with commercial or industrial septage; or
g. Special wastes as defined and controlled under A.R.S.
				  Title 49, Chapter 4, Article 9.
8. "Bulk biosolids" means biosolids that are transported and
				  land-applied in a manner other than in a bag or other container holding
				  biosolids of 1.102 short tons or 1 metric ton or less.
9. "Class I sludge management facility" means any POTW
				  identified under
				  40
				  CFR 403.8(a) as being
				  required to have an approved pretreatment program (including a POTW for which
				  the Department assumes local program responsibilities under
				  40
				  CFR 403.10(e) ) and any
				  other treatment works treating domestic sewage classified as a Class I sludge
				  management facility by the regional administrator in conjunction with the
				  Director or by the Director because of the potential for its sludge use or
				  disposal practices to adversely affect public health or the environment.
10. "Clean water act" means the federal water pollution
				  control act amendments of 1972, as amended ( P.L. 92-500; 86 Stat. 816; 33
				  United States Code sections 1251 through 1376). A.R.S.
				  49-201(6).
11. "Coarse fragments" means rock particles in the
				  gravel-size range or larger.
12. "Coarse or medium sands" means a soil mixture of which
				  more than 50% of the sand fraction is retained on a No. 40 (0.425 mm)
				  sieve.
13. "Cumulative pollutant loading rate" means the maximum
				  amount of a pollutant applied to a land application site.
14. "Domestic septage" means the liquid or solid material
				  removed from a septic tank, cesspool, portable toilet, marine sanitation
				  device, or similar system or device that receives only domestic sewage.
				  Domestic septage does not include commercial or industrial wastewater or
				  restaurant grease-trap wastes.
15. "Domestic sewage" means waste or wastewater from humans
				  or household operations that is discharged to a publicly or privately owned
				  treatment works. Domestic sewage also includes commercial and industrial
				  wastewaters that are discharged into a publicly-owned or privately-owned
				  treatment works if the industrial or commercial wastewater combines with human
				  excreta and other household and nonindustrial wastewaters before
				  treatment.
16. "Dry-weight basis" means the weight of biosolids
				  calculated after the material has been dried at 105° C until reaching a
				  constant mass.
17. "Exceptional quality biosolids" means biosolids certified
				  under
				  R18-9-1013(A)(6)
				  as meeting the pollutant concentrations in
				  R18-9-1005
				  Table 2, Class A pathogen reduction in
				  R18-9-1006,
				  and one of the vector attraction reduction requirements in subsections
				  R18-9-1010(A)(1)
				  through
				  R18-9-1010(A)(8).
18. "Feed crops" means crops produced for animal
				  consumption.
19. "Fiber crops" means crops grown for their physical
				  characteristics. Fiber crops, including flax and cotton, are not produced for
				  human or animal consumption.
20. "Food crops" means crops produced for human
				  consumption.
21. "Gravel" means soil predominantly composed of rock
				  particles that will pass through a 3-inch (75 mm) sieve and be retained on a
				  No. 4 (4.75 mm) sieve.
22. "Industrial wastewater" means wastewater that is
				  generated in a commercial or industrial process.
23. "Land application," "apply biosolids," or "biosolids
				  applied to the land" means spraying or spreading biosolids on the surface of
				  the land, injecting biosolids below the land's surface, or incorporating
				  biosolids into the soil to amend, condition, or fertilize the soil.
24. "Monthly average" means the arithmetic mean of all
				  measurements taken during a calendar month.
25. "Municipality" means a city, town, county, district,
				  association, or other public body, including an intergovernmental agency of two
				  or more of the foregoing entities created by or under state law. The term
				  includes special districts such as a water district, sewer district, sanitary
				  district, utility district, drainage district, or similar entity that has as
				  one of its principal responsibilities, the treatment, transport, use, or
				  disposal of biosolids.
26. "Navigable waters" means the waters of the United States
				  as defined by section 502(7) of the clean water act (33 United States Code
				  section 1362(7)). A.R.S. §
									49-201(21).
27. "Other container" means a bucket, bin, box, carton,
				  trailer, pickup truck bed, or a tanker vehicle or an open or closed receptacle
				  with a load capacity of 1.102 short tons or one metric ton or less.
28. "Pathogen" means a disease-causing organism.
29. "Person" means an individual, employee, officer, managing
				  body, trust, firm, joint stock company, consortium, public or private
				  corporation, including a government corporation, partnership, association or
				  state, a political subdivision of this state, a commission, the United States
				  government or a federal facility, interstate body or other entity. A.R.S.
				  §
									49-201(26).
30. "Person who prepares biosolids" means a person who
				  generates biosolids during the treatment of domestic sewage in a treatment
				  works, packages biosolids, or derives a new product from biosolids either
				  through processing or by combining it with another material, including blending
				  several biosolids together.
31. "pH" means the logarithm of the reciprocal of the
				  hydrogen ion concentration.
32. "Pollutant" means an organic substance, an inorganic
				  substance, a combination of organic and inorganic substances, or a pathogenic
				  organism that, after release into the environment and upon exposure, ingestion,
				  inhalation, or assimilation into an organism, either directly from the
				  environment or indirectly by ingestion through the food chain, could cause
				  death, disease, behavioral abnormalities, cancer, genetic mutations,
				  physiological malfunctions (including malfunction in reproduction), or physical
				  deformities in either organisms or reproduced offspring.
33. "Pollutant limit" means:
a. A numerical value that describes the quantity of a
				  pollutant allowed in a unit of biosolids such as milligrams per kilogram of
				  total solids,
b. The quantity of a pollutant that can be applied to a unit
				  area of land such as kilograms per hectare, or
c. The volume of biosolids that can be applied to a unit area
				  of land such as gallons per acre.
34. "Privately owned treatment works" means a device or
				  system owned by a non-governmental entity used to treat, recycle, or reclaim,
				  either domestic sewage or a combination of domestic sewage and industrial waste
				  that is generated off-site.
35. "Public contact site" means a park, sports field,
				  cemetery, golf course, plant nursery, or other land with a high potential for
				  public exposure to biosolids.
36. "Reclamation" means the use of biosolids to restore or
				  repair construction sites, active or closed mining sites, landfill caps, or
				  other drastically disturbed land.
37. "Responsible official" means a principal corporate
				  officer, general partner, proprietor, or, in the case of a municipality, a
				  principal executive official or any duly authorized agent.
38. "Runoff" means rainwater, leachate, or other liquid that
				  drains over any part of a land surface and runs off of the land surface.
39. "Sand" means soil that contains more than 85% grains in
				  the size range that will pass through a No. 4 (4.75 mm) sieve and be retained
				  on a No. 200 (0.075 mm) sieve.
40. "Sewage sludge":
(a) Means solid, semisolid or liquid residue that is
				  generated during the treatment of domestic sewage in a treatment works.
(b) Includes domestic septage, scum or solids that are
				  removed in primary, secondary or advanced wastewater treatment processes, and
				  any material derived from sewage sludge.
(c) Does not include ash that is generated during the firing
				  of sewage sludge in a sewage sludge incinerator or grit and screenings that are
				  generated during preliminary treatment of domestic sewage in a treatment works.
				  A.R.S. §
									49-255(6)
41. "Sewage sludge unit" means land on which only sewage
				  sludge is placed for final disposal. This does not include land on which sewage
				  sludge is either stored or treated. Land does not include navigable
				  waters.
42. "Specific oxygen uptake rate (SOUR)" means the mass of
				  oxygen consumed per unit time per unit mass of total solids (dry-weight basis)
				  in biosolids.
43. "Store biosolids" or "storage of biosolids" means the
				  temporary holding or placement of biosolids on land before land
				  application.
44. "Surface disposal site" means an area of land that
				  contains one or more active sewage sludge units.
45. "Ton" means a net weight of 2000 pounds and is known as a
				  short ton.
46. "Total solids" means the biosolids material that remains
				  when sewage sludge is dried at 103° C to 105° C.
47. "Treatment of biosolids" means the thickening,
				  stabilization, dewatering, and other preparation of biosolids for land
				  application. Storage is not a treatment of biosolids.
48. "Unstabilized solids" means the organic matter in
				  biosolids that has not been treated or reduced through an aerobic or anaerobic
				  process.
49. "Vectors" means rodents, flies, mosquitoes, or other
				  organisms capable of transporting pathogens.
50. "Volatile solids" means the amount of total solids lost
				  when biosolids are combusted at 550° C in the presence of excess
				  air.
51. "Wetlands" means those areas that are inundated or
				  saturated by surface water or groundwater at a frequency and duration to
				  support, and do under normal circumstances support, a prevalence of vegetation
				  typically adapted for life in saturated soil conditions. Wetlands generally
				  include swamps, marshes, bogs, cienegas, tinajas, and similar
				  areas.