reglab/statecodes huggingface dataset:
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Appendix A - Numeric Water Quality Standards › Table 15 - Acute Standards for Total Ammonia (in mg/L, as N) for Aquatic and Wildlife Warmwater and Effluent Dependent, Unionid Mussels Absent

Current through Register Vol. 30, No. 28, July 12, 2024
For the aquatic and wildlife warmwater uses, unionids will
					 be assumed to be present unless a study is performed demonstrating that they
					 are absent and there is no historic evidence of their presence, or hydrologic
					 modification has altered the flow regime in a way that would prevent their
					 reestablishment. For the aquatic and wildlife effluent dependent uses, unionids
					 will be assumed to be absent.
pH
Temperature
								(°C)
0-14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
6.5
51
51
51
51
51
51
51
51
51
48
44
40
37
34
31
29
27
6.6
49
49
49
49
49
49
49
49
49
46
42
39
36
33
30
28
26
6.7
46
46
46
46
46
46
46
46
46
43
40
37
34
31
29
26
24
6.8
44
44
44
44
44
44
44
44
44
41
38
35
32
29
27
25
23
6.9
41
41
41
41
41
41
41
41
41
38
35
32
30
27
25
23
21
7
38
38
38
38
38
38
38
38
38
35
32
30
27
25
23
21
20
7.1
34
34
34
34
34
34
34
34
34
32
29
27
25
23
21
19
18
7.2
31
31
31
31
31
31
31
31
31
29
26
24
22
21
19
17
16
7.3
27
27
27
27
27
27
27
27
27
26
23
22
20
18
17
16
14
7.4
24
24
24
24
24
24
24
24
24
22
21
19
17
16
15
14
13
7.5
21
21
21
21
21
21
21
21
21
19
18
16
15
14
13
12
11
7.6
18
18
18
18
18
18
18
18
18
17
15
14
13
12
11
10
9.3
7.7
15
15
15
15
15
15
15
15
15
14
13
12
11
10
9.3
8.6
7.9
7.8
13
13
13
13
13
13
13
13
13
12
11
10
9.2
8.5
7.8
7.2
6.6
7.9
11
11
11
11
11
11
11
11
11
9.9
9.1
8.4
7.7
7.1
6.5
6
5.5
8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.2
7.5
6.9
6.4
5.9
5.4
5
4.6
8.1
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
6.8
6.2
5.7
5.3
4.9
4.5
4.1
3.8
8.2
6
6
6
6
6
6
6
6
6
5.6
5.1
4.7
4.4
4
3.7
3.4
3.1
8.3
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.6
4.2
3.9
3.6
3.3
3
2.8
2.6
8.4
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
3.8
3.4
3.2
3
2.7
2.5
2.3
2.1
8.5
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.1
2.9
2.6
2.4
2.2
2.1
1.9
1.8
8.6
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.6
2.4
2.2
2
1.9
1.7
1.6
1.4
8.7
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.2
2
1.8
1.7
1.5
1.4
1.3
1.2
8.8
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.8
1.7
1.5
1.4
1.3
1.2
1.1
1
8.9
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.5
1.4
1.3
1.2
1.1
1
0.92
0.85
9
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.3
1.2
1.1
1
0.93
0.85
0.78
0.72
Click here to view
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Appendix A - Numeric Water Quality Standards › Table 17 - Chronic Criteria for Total Ammonia (in mg/L, as N) for Aquatic and Wildlife coldwater, Unionid Mussels Absent

Current through Register Vol. 30, No. 28, July 12, 2024
For the aquatic and wildlife coldwater uses, unionids will
					 be assumed to be present unless a study is performed demonstrating that they
					 are absent and there is no historic evidence of their presence, or hydrologic
					 modification has altered the flow regime in a way that would prevent their
					 reestablishment.
pH
Temperature
								(°C)
0-14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
6.5
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7
6.6
6.2
5.8
5.4
5.1
4.8
4.5
4.2
6.6
7.2
7.2
7.2
7.2
7.2
7.2
7.2
7.2
6.9
6.5
6.1
5.7
5.4
5
4.7
4.4
4.1
6.7
7.1
7.1
7.1
7.1
7.1
7.1
7.1
7.1
6.8
6.4
6
5.6
5.3
4.9
4.6
4.3
4.1
6.8
6.9
6.9
6.9
6.9
6.9
6.9
6.9
6.9
6.6
6.2
5.8
5.5
5.1
4.8
4.5
4.2
4
6.9
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.7
6.5
6.1
5.7
5.3
5
4.7
4.4
4.1
3.9
7
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.2
5.8
5.5
5.1
4.8
4.5
4.2
4
3.7
7.1
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6
5.6
5.3
4.9
4.6
4.3
4.1
3.8
3.6
7.2
5.9
5.9
5.9
5.9
5.9
5.9
5.9
5.9
5.7
5.3
5
4.7
4.4
4.1
3.9
3.6
3.4
7.3
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.4
5
4.7
4.4
4.1
3.9
3.6
3.4
3.2
7.4
5.2
5.2
5.2
5.2
5.2
5.2
5.2
5.2
5
4.7
4.4
4.1
3.9
3.6
3.4
3.2
3
7.5
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.6
4.3
4.1
3.8
3.6
3.3
3.1
2.9
2.8
7.6
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.4
4.2
3.9
3.7
3.5
3.2
3
2.9
2.7
2.5
7.7
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.9
3.8
3.5
3.3
3.1
2.9
2.7
2.6
2.4
2.3
7.8
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.5
3.4
3.2
3
2.8
2.6
2.4
2.3
2.1
2
7.9
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3.1
3
2.8
2.6
2.4
2.3
2.1
2
1.9
1.8
8
2.7
2.7
2.7
2.7
2.7
2.7
2.7
2.7
2.6
2.4
2.3
2.1
2
1.9
1.7
1.6
1.5
8.1
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.2
2.1
1.9
1.8
1.7
1.6
1.5
1.4
1.3
8.2
2
2
2
2
2
2
2
2
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
8.3
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.7
1.6
1.5
1.4
1.3
1.2
1.2
1.1
1
0.96
8.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.3
1.2
1.1
1.1
0.99
0.93
0.87
0.81
8.5
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.1
1
0.95
0.89
0.83
0.78
0.73
0.69
8.6
1
1
1
1
1
1
1
1
0.97
0.91
0.85
0.8
0.75
0.7
0.66
0.62
0.58
8.7
0.86
0.86
0.86
0.86
0.86
0.86
0.86
0.86
0.82
0.77
0.72
0.68
0.64
0.6
0.56
0.52
0.49
8.8
0.73
0.73
0.73
0.73
0.73
0.73
0.73
0.73
0.7
0.65
0.61
0.58
0.54
0.51
0.47
0.44
0.42
8.9
0.62
0.62
0.62
0.62
0.62
0.62
0.62
0.62
0.6
0.56
0.52
0.49
0.46
0.43
0.41
0.38
0.36
9
0.54
0.54
0.54
0.54
0.54
0.54
0.54
0.54
0.51
0.48
0.45
0.42
0.4
0.37
0.35
0.33
0.31
Click here to view
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Appendix C - Site-Specific Standards

Current through Register Vol. 30, No. 28, July 12, 2024
Watershed
Surface Water
Surface Water Description &
							 Location
Parameter
Site-Specific Criterion
LC
Rio de Flag (EDW)
Flagstaff WWTP outfall to the confluence with San
							 Francisco Wash
Copper (D)
33 µg/L
(A&Wedw)
CL
Yuma East Wetlands
From inlet culvert from Colorado River into restored
							 channel to Ocean Bridge
Selenium (T)
2.2 µg/L
(A&Ww acute)
Total residual chlorine
33 µg/L
(A&Ww acute)
20 µg/L
(A&Ww chronic)
SR
Pinto Creek
From confluence of Ellis Ranch tributary at
							 33°19'26.7"/110°54'57.5" to the confluence of West Fork of Pinto Creek
							 at 33°27'32.3"/111°00'19.7"
Copper (D)
34 µg/L
(A&Ww acute for hardness values below 268 mg/
							 L)
34 µg/L (A&Ww chronic)
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-201 - Definitions

Current through Register Vol. 30, No. 28, July 12, 2024
The following terms apply to this Article:
1. "Acute toxicity" means toxicity involving
				a stimulus severe enough to induce a rapid response. In aquatic toxicity tests,
				an effect observed in 96 hours or less is considered acute.
2. "Agricultural irrigation AZ (AgI AZ)"
				means the use of a non-WOTUS protected surface water for crop
				irrigation.
3. "Agricultural
				livestock watering AZ (AgL AZ)" means the use of a non-WOTUS protected surface
				water as a water supply for consumption by livestock.
4. "Aquatic and wildlife AZ (cold water)
				(A&Wc AZ)" means the use of a non-WOTUS protected surface water by animals,
				plants, or other cold-water organisms, generally occurring at an elevation
				greater than 5000 feet, for habitation, growth, or propagation.
5. "Aquatic and wildlife AZ (warm water)
				(A&Ww AZ)" means the use of a non-WOTUS protected surface water by animals,
				plants, or other warm-water organisms, generally occurring at an elevation less
				than 5000 feet, for habitation, growth, or propagation.
6. "Assimilative capacity" means the
				difference between the baseline water quality concentration for a pollutant and
				the most stringent applicable water quality criterion for that
				pollutant.
7. "Complete Mixing"
				means the location at which concentration of a pollutant across a transect of a
				surface water differs by less than five percent.
8. "Criteria" means elements of water quality
				standards expressed as pollutant concentrations, levels, or narrative
				statements representing a water quality that supports a designated
				use.
9. "Critical flow conditions
				of the discharge" means the hydrologically based discharge flow averages that
				the director uses to calculate and implement applicable water quality criteria
				to a mixing zone's receiving water as follows:
a. For acute aquatic water quality standard
				criteria, the discharge flow critical condition is represented by the maximum
				one-day average flow analyzed over a reasonably representative
				timeframe.
b. For chronic aquatic
				water quality standard criteria, the discharge flow critical flow condition is
				represented by the maximum monthly average flow analyzed over a reasonably
				representative timeframe.
c. For
				human health-based water quality standard criteria, the discharge flow critical
				condition is the long-term arithmetic mean flow, averaged over several years so
				as to simulate long-term exposure.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-202 - Applicability

Current through Register Vol. 30, No. 28, July 12, 2024
A. The water
				quality standards prescribed in this Article apply to non-WOTUS protected
				surface waters.
B. The water
				quality standards prescribed in this Article do not apply to the following:
1. A waste treatment system, including an
				impoundment, pond, lagoon, or constructed wetland that is part of the waste
				treatment system;
2. A man-made
				surface impoundment and any associated ditch and conveyance used in the
				extraction, beneficiation, or processing of metallic ores including:
a. A pit,
b. Pregnant leach solution pond
c. Raffinate pond,
d. Tailing impoundment,
e. Decant pond,
f. Pond of sump in a mine put associated with
				dewatering activity,
g. Pond
				holding water that has come into contact with a process or product that is
				being held for recycling,
h. Spill
				or catchment pond, or
i. A pond
				used for onsite remediation
3. A man-made cooling pond that is neither
				created in a surface water nor results from the impoundment of a surface water;
				or
4. A surface water located on
				tribal lands.
5. WOTUS Protected
				Surface Waters
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-203 - Designated Uses for Non-WOTUS Protected Surface Waters

Current through Register Vol. 30, No. 28, July 12, 2024
A. The designated
				uses for specific non-WOTUS protected surface waters are listed in the
				Protected Surface Waters List in this article. The designated uses that may be
				assigned to a non-WOTUS protected surface water are:
1. Full-body contact AZ,
2. Partial-body contact AZ,
3. Domestic water source AZ,
4. Fish consumption AZ,
5. Aquatic and wildlife AZ (cold
				water),
6. Aquatic and wildlife AZ
				(warm water),
7. Agricultural
				irrigation AZ, and
8. Agricultural
				livestock watering AZ.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-204 - Interim, Presumptive Designated Uses

Current through Register Vol. 30, No. 28, July 12, 2024
The following water quality standards apply to a non-WOTUS
				  protected surface water that is not listed on the Protected Surface Waters List
				  but is added on an emergency basis pursuant to A.R.S. §
									49-221(G)(7):
1. The aquatic and wildlife AZ (cold water
				use applies to a non-WOTUS protected surface water above 5000 feet in
				elevation;
2. The aquatic and
				wildlife AZ (warm water) applies to a non-WOTUS protected surface water below
				5000 feet in elevation;
3. The
				full-body contact AZ use applies to a non-WOTUS protected surface water if the
				Director makes a determination that the non-WOTUS protected surface water is
				used by humans for swimming or other recreational activity that causes the
				human body to come into direct contact with the water to the point of complete
				submergence. The use is such that ingestion of the water is likely and
				sensitive body organs, such as the eyes, ears, or nose, may be exposed to
				direct contact with the water.
4.
				The partial-body contact AZ use applies to a non-WOTUS protected surface water
				if the Director makes a determination that the non-WOTUS protected surface
				water is used by humans in a way that may cause the human body to come into
				direct contact with the water, but normally not to the point of complete
				submergence (for example, wading or boating). The use is such that ingestion of
				the water is not likely and sensitive body organs, such as the eyes, ears, or
				nose, will not normally be exposed to direct contact with the water.
5. The fish consumption AZ use applies to a
				non-WOTUS protected surface water if the Director makes a determination that
				the non-WOTUS protected surface water is used by humans for harvesting aquatic
				organisms for consumption. Harvestable aquatic organisms include, but are not
				limited to, fish, clams, turtles, crayfish, and frogs.
6. The domestic water source AZ use applies
				to a non-WOTUS protected surface water if the Director makes a determination
				that the non-WOTUS protected surface water is used by humans as a source of
				potable water.
7. The agricultural
				irrigation AZ use applies to a non-WOTUS protected surface water if the
				Director makes a determination that the non-WOTUS protected surface water is
				used for crop irrigation.
8. The
				agricultural livestock watering AZ use applies to any non-WOTUS protected
				surface water if the Director makes a determination that the non-WOTUS
				protected surface water is used as a water supply for consumption by
				livestock.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-205 - Analytical Methods

Current through Register Vol. 30, No. 28, July 12, 2024
A. A person
				conducting an analysis of a sample taken to determine compliance with a water
				quality standard shall use an analytical method prescribed in A.A.C.
				R9-14-610 or an alternative method
				approved under A.A.C.
				R9-14-610(C).
B. A test result from a sample taken to
				determine compliance with a water quality standard is valid only if the sample
				is analyzed by a laboratory that is licensed by the Arizona Department of
				Health Services, an out-of-state laboratory licensed under A.R.S. §
				36495.14, or a laboratory exempted under A.R.S. §
									36-495.02, for the analysis
				performed.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-206 - Mixing Zones

Current through Register Vol. 30, No. 28, July 12, 2024
A. The Director may
				establish a mixing zone for a point source discharge to a non-WOTUS protected
				surface water as a condition of an individual AZPDES permit on a
				pollutant-by-pollutant basis. A mixing zone is prohibited where there is no
				water for dilution, or as prohibited pursuant to subsection (H).
B. The owner or operator of a point source
				seeking the establishment of a mixing zone shall submit a request to the
				Director for a mixing zone as part of an application for an AZPDES permit. The
				request shall include:
1. An identification of
				the pollutant for which the mixing zone is requested;
2. A proposed outfall design;
3. A definition of the boundary of the
				proposed mixing zone. For purposes of this subsection, the boundary of a mixing
				zone is where complete mixing occurs; and
4. A complete and detailed description of the
				existing physical, biological, and chemical conditions of the receiving water
				and the predicted impact of the proposed mixing zone on those conditions. The
				description shall also address the factors listed in subsection (D) that the
				Director must consider when deciding to grant or deny a request and shall
				address the mixing zone requirements in subsection (H).
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-207 - Natural background

Current through Register Vol. 30, No. 28, July 12, 2024
Where the concentration of a pollutant exceeds a water
				  quality standard and the exceedance is caused solely by naturally occurring
				  conditions, the exceedance shall not be considered a violation of the water
				  quality standard.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-208 - Schedules of Compliance

Current through Register Vol. 30, No. 28, July 12, 2024
A compliance schedule in an AZPDES permit shall require the
				  permittee to comply with a discharge limitation based upon a new or revised
				  water quality standard as soon as possible to achieve compliance. The permittee
				  shall demonstrate that the point source cannot comply with a discharge
				  limitation based upon the new or revised water quality standard through the
				  application of existing water pollution control technology, operational
				  changes, or source reduction. In establishing a compliance schedule, the
				  Director shall consider:
1. How much
				time the permittee has already had to meet any effluent limitations under a
				prior permit;
2. The extent to
				which the permittee has made good faith efforts to comply with the effluent
				limitations and other requirements in a prior permit;
3. Whether treatment facilities, operations,
				or measures must be modified to meet the effluent limitations;
4. How long any necessary modifications would
				take to implement; and
5. Whether
				the permittee would be expected to use the same treatment facilities,
				operations or other measures to meet the effluent limitations as it would have
				used to meet the effluent limitations in a prior permit.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-210 - Site Specific Standards

Current through Register Vol. 30, No. 28, July 12, 2024
A. The Director
				shall adopt a site-specific standard by rule.
B. The Director may adopt a site-specific
				standard based upon a request or upon the Director's initiative for any of the
				following reasons:
1. Local physical,
				chemical, or hydrological conditions of a non-WOTUS protected surface water
				such as pH, hardness, fate and transport, or temperature alters the biological
				availability or toxicity of a pollutant;
2. The sensitivity of resident aquatic
				organisms that occur in a non-WOTUS protected surface water to a pollutant
				differs from the sensitivity of the species used to derive the numeric water
				quality standards to protect aquatic life in
				R18-11-215;
3. Resident aquatic organisms that occur in a
				non-WOTUS protected surface water represent a narrower mix of species than
				those in the dataset used by ADEQ to derive numeric water quality standards to
				protect aquatic life in
				R18-11-215;
4. The natural background concentration of a
				pollutant is greater than the numeric water quality standard to protect aquatic
				life prescribed in
				R18-11-215. "Natural background"
				means the concentration of a pollutant in a non-WOTUS protected surface water
				due only to non-anthropogenic sources; or
5. Other factors or combination of factors
				that upon review by the Director warrant changing a numeric water quality
				standard for a non-WOTUS protected surface water.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-211 - Enforcement of Non-permitted Discharges to Non-WOTUS Protected Surface Waters

Current through Register Vol. 30, No. 28, July 12, 2024
A. The Department
				may establish a numeric water quality standard at a concentration that is below
				the practical quantitation limit. Therefore, in enforcement actions pursuant to
				subsection (B), the water quality standard is enforceable at the practical
				quantitation limit.
B. Except for
				chronic aquatic and wildlife criteria, for non-permitted discharge violations,
				the Department shall determine compliance with numeric water quality standard
				criteria from the analytical result of a single sample, unless additional
				samples are required under this article. For chronic aquatic and wildlife
				criteria, compliance for non-permitted discharge violations shall be determined
				from the geometric mean of the analytical results of the last four samples
				taken at least 24 hours apart. For the purposes of this Section, a
				"nonpermitted discharge violation" does not include a discharge regulated under
				an AZPDES permit.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-212 - Statements of Intent and Limitations on the Reach of Article 2

Current through Register Vol. 30, No. 28, July 12, 2024
A. Nothing in this
				Article prohibits fisheries management activities by the Arizona Game and Fish
				Department or the U.S. Fish and Wildlife Service. This Article does not exempt
				fish hatcheries from AZPDES permit requirements.
B. Nothing in this Article prevents the
				routine physical or mechanical maintenance of canals, drains, and the urban
				lakes identified as non-WOTUS protected surface waters on the Protected Surface
				Waters List. Physical or mechanical maintenance includes dewatering, lining,
				dredging, and the physical, biological, or chemical control of weeds and algae.
				Increases in turbidity that result from physical or mechanical maintenance
				activities are permitted in canals, drains, and the urban lakes identified on
				the Protected Surface Waters List.
C. Increases in turbidity that result from
				the routine physical or mechanical maintenance of a dam or flood control
				structure are not violations of this Article.
D. Nothing in this Article requires the
				release of water from a dam or a flood control structure.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-213 - Procedures for Determining Economic, Social, and Environmental Cost and Benefits

Current through Register Vol. 30, No. 28, July 12, 2024
A. The Director
				shall perform an economic, social, and environmental cost and benefits analysis
				that shows the benefits outweigh the costs before conducting any of the
				following rulemaking actions:
1. Adopting a
				water quality standard that applies to non-WOTUS protected surface waters at a
				particular level or for a particular water category of non-WOTUS protected
				surface waters;
2. Adding a
				non-WOTUS protected surface water to the Protected Surface Waters List when the
				conditions of A.R.S. §
										49-221(G)(4) 
				apply; or
3. Removing a non-WOTUS
				protected surface water from the Protected Surface Waters List when the
				conditions of A.R.S. §
										49-221(G)(6) 
				apply.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-214 - Narrative Water Quality Standards for Non-WOTUS Protected Surface Waters

Current through Register Vol. 30, No. 28, July 12, 2024
A. A non-WOTUS
				protected surface water shall not contain pollutants in amounts or combinations
				that:
1. Settle to form bottom deposits that
				inhibit or prohibit the habitation, growth, or propagation of aquatic
				life;
2. Cause objectionable odor
				in the area in which the non-WOTUS protected surface water is
				located;
3. Cause off-taste or odor
				in drinking water;
4. Cause
				off-flavor in aquatic organisms;
5.
				Are toxic to humans, animals, plants, or other organisms;
6. Cause the growth of algae or aquatic
				plants that inhibit or prohibit the habitation, growth, or propagation of other
				aquatic life or that impair recreational uses;
7. Cause or contribute to a violation of an
				aquifer water quality standard prescribed in
				R18-11-405 or
				R18-11-406; or
8. Change the color of the non-WOTUS
				protected surface water from natural background levels of color.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-215 - Numeric Water Quality Standards for Non-WOTUS Protected Surface Waters

Current through Register Vol. 30, No. 28, July 12, 2024
A. E. coli
				bacteria. The following water quality standards for Escherichia coli (E. coli)
				are expressed in colony-forming units per 100 milliliters of water (cfu / 100
				ml) or as a Most Probable Number (MPN):
E. coli
FBC AZ
PBC AZ
Geometric mean (minimum of four samples in 30
							 days)
126
126
Statistical threshold value
410
576
B.
				pH. The following water quality standards for non-WOTUS protected surface
				waters pH are expressed in standard units:
pH
DWS AZ
FBC AZ, PBC AZ, A&Ww AZ, A&Wc
							 AZ
AgI AZ
AgL AZ
Maximum
9.0
9.0
9.0
9.0
Minimum
5.0
6.5
4.5
6.5
C.
				The maximum allowable increase in ambient water temperature, due to a thermal
				discharge is as follows:
A&Ww AZ
A&Wc AZ
3.0° C
1.0° C
D.
				Suspended sediment concentration.
1. The
				following water quality standards for suspended sediment concentration,
				expressed in milligrams per liter (mg/L), are expressed as a median value
				determined from a minimum of four samples collected at least seven days
				apart:
2. The Director shall not
				use the results of a suspended sediment concentration sample collected during
				or within 48 hours after a local storm event to determine the median value.
A&Wc AZ
A&Ww AZ
25
80
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Section R18-11-217 - Best Management Practices for non-WOTUS Protected Surface Waters

Current through Register Vol. 30, No. 28, July 12, 2024
A. The BMPs
				described in this rule are intended to ensure that activities within the
				ordinary high-water mark of perennial or intermittent non-WOTUS protected
				surface waters, or within the bed and bank of other waters that materially
				impact (i.e., are within 1/4 mile upstream of) non-WOTUS protected surface
				waters, do not violate applicable surface water quality standards in the
				non-WOTUS protected surface waters. For purposes of this section, the
				activities described in the prior sentence will be referred to as "regulated
				activities." Depending on the regulated activities conducted, not all of the
				BMPs described below may be applicable to a particular project. The owner or
				operator is responsible to consider the BMPs outlined below and to implement
				those necessary to ensure that the regulated activities will not violate
				applicable surface water quality standards in the non-WOTUS protected surface
				water.
B. The BMPs described below
				are not applicable to any activities that are addressed under an individual or
				general AZPDES permit that are otherwise regulated under A.R.S. Title
				49.
C. Erosion and sedimentation
				control BMPs:
1. When flow is present in any
				non-WOTUS protected surface waters within a project area, flow shall not be
				altered except to prevent erosion or pollution of any non-WOTUS protected
				surface waters.
2. Any disturbance
				within the ordinary high-water mark of non-WOTUS protected surface waters or
				within the bed and banks of other waters, that is not intended to be
				permanently altered, shall be stabilized as soon as practicable to prevent
				erosion and sedimentation.
3. When
				flow in any non-WOTUS protected surface water is sufficient to erode, carry, or
				deposit material, regulated activities shall cease until:
a. The flow decreases below the point where
				sediment movement ceases; or
b.
				Control measures have been undertaken, i.e., equipment and material easily
				transported by flow are protected within non-erodible barriers or moved outside
				the flow area.
4. Silt
				laden or turbid water resulting from regulated activities should be managed in
				a manner to reduce sediment load prior to discharging.
5. No washing or dewatering of fill material
				should occur within the ordinary high-water mark of any perennial or
				intermittent non-WOTUS protected surface waters. Other than the replacement of
				native fill or material used to support vegetation rooting or growth, fill
				placed within the ordinary high-water mark of any perennial or intermittent
				non-WOTUS protected surface water must resist washout whether such resistance
				is derived via particle size limits, presence of a binder, vegetation, or other
				armoring.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 2 - Acute Water Quality Standards for Dissolved Cadmium

Current through Register Vol. 30, No. 28, July 12, 2024
Aquatic and Wildlife Coldwater
							 AZ
Aquatic and Wildlife Warm Water
							 AZ
Hard.
							 mg/L
Std.
							 µg/L
Hard.
							 mg/L
Std.
							 µg/L
20
0.40
20
2.1
100
1.8
100
9.4
400
6.5
400
34
e(0.9789*LN(Hardness)-3.866)*(1.136672-LN(Hard-ness)*0.041838)
e(0.9789*LN(Hardness)-2.208)*(1.136672-LN(Hard-ness)*0.041838)
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 3 - Chronic Water Quality Standards for Dissolved Cadmium

Current through Register Vol. 30, No. 28, July 12, 2024
Aquatic and Wildlife Coldwater
							 AZ and Warmwater AZ
Hard. mg/L
Std. µg/L
20
0.21
100
0.72
400
2.0
e(0.7977*LN(Hardness)-3.909)*(1.101672-LN(Hardness)*0.041838)
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 4 - Water Quality Standards for Dissolved Chromium III

Current through Register Vol. 30, No. 28, July 12, 2024
Acute Aquatic and Wildlife
							 Coldwater AZ and Warmwater AZ
Chronic Aquatic and Wildlife
							 Coldwater AZ and Warmwater AZ
Hard.
							 mg/L
Std.
							 µg/L
Hard.
							 mg/L
Std.
							 µg/L
20
152
20
19.8
100
570
100
74.1
400
1,773
400
231
e(0.819*LN(Hardness)+3.7256)*(0.316)
e(0.819*LN(Hardness)+0.6848)*(0.86)
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 5 - Water Quality Standards for Dissolved Copper

Current through Register Vol. 30, No. 28, July 12, 2024
Acute Aquatic and Wildlife
							 Coldwater AZ and Warmwater AZ
Chronic Aquatic and Wildlife
							 Coldwater AZ and Warmwater AZ
Hard.
							 mg/L
Std.
							 µg/L
Hard.
							 mg/L
Std.
							 µg/L
20
2.9
20
2.3
100
13
100
9.0
400
50
400
29
e(0.9422*LN(Hardness)-1.702)*(0.96)
e(0.8545*LN(Hardness)-1.702)*(0.96)
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 6 - Water Quality Standards for Dissolved Lead

Current through Register Vol. 30, No. 28, July 12, 2024
Acute Aquatic and Wildlife
							 Coldwater AZ and Warmwater AZ
Chronic Aquatic and Wildlife
							 Coldwater AZ and Warmwater AZ
Hard.
							 mg/L
Std.
							 µg/L
Hard.
							 mg/L
Std.
							 µg/L
20
10.8
20
0.42
100
64.6
100
2.5
400
281
400
10.9
e(1.273*LN(Hardness)-1.46)*(1.46203-(LN(Hardness))*(0.145712))
e(1.273*LN(Hardness)-4.705) * (1.46203-
							 (LN(Hardness))*(0.145712))
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 7 - Water Quality Standards for Dissolved Nickel

Current through Register Vol. 30, No. 28, July 12, 2024
Acute Aquatic and Wildlife
							 Coldwater AZ and Warmwater AZ
Chronic Aquatic and Wildlife
							 Coldwater AZ and Warmwater AZ
Hard.
							 mg/L
Std.
							 µg/L
Hard.
							 mg/L
Std.
							 µg/L
20
120.0
20
13.3
100
468
100
52.0
400
1513
400
168
e(0.846*LN(Hardness)+2.255)*(0.998)
e(0.846*LN(Hardness)+0.0584)*(0.997)
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 8 - Water Quality Standards for Dissolved Silver

Current through Register Vol. 30, No. 28, July 12, 2024
Acute Aquatic and Wildlife
							 Coldwater AZ and Warmwater AZ
Hard. mg/L
Std. µg/L
20
0.20
100
3.2
400
34.9
e(1.72*LN(Hardness)-6.59)*(0.85)
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 9 - Water Quality Standards for Dissolved Zinc

Current through Register Vol. 30, No. 28, July 12, 2024
Acute and Chronic Aquatic and
							 Wildlife Coldwater AZ and Warmwater AZ
Hard.
							 mg/L
Std.
							 µg/L
20
30.0
100
117
400
379
e(0.8473*LN(Hardness)+0.884)*(0.978)
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 10 - Water Quality Standards for Pentachlorophenol

Current through Register Vol. 30, No. 28, July 12, 2024
Acute Aquatic and Wildlife
							 Coldwater AZ and Warmwater AZ
Chronic Aquatic and Wildlife
							 Coldwater AZ and Warmwater AZ
pH
µg/L
pH
µg/L
3
0.16
3
0.1
6
3.3
6
2.1
9
67.7
9
42.7
e(1.005*(pH)-4.83)
e(1.005*(pH)-5.29)
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 11 - Acute Standards for Total Ammonia (in mg/L, as N) for Aquatic and Wildlife Coldwater AZ, Unionid Mussels Present

Current through Register Vol. 30, No. 28, July 12, 2024
For the Aquatic and Wildlife Coldwater AZ uses, unionids
				  will be assumed to be present unless a study is performed demonstrating that
				  they are absent and there is no historic evidence of their presence, or
				  hydrologic modification has altered the flow regime in a way that would prevent
				  their reestablishment.
Temperature (°C)
pH
0-14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
6.5
33
33
32
29
27
25
23
21
19
18
16
15
14
13
12
11
9.9
6.6
31
31
30
28
26
24
22
20
18
17
16
14
13
12
11
10
9.5
6.7
30
30
29
27
24
22
21
19
18
16
15
14
13
12
11
9.8
9
6.8
28
28
27
25
23
21
20
18
17
15
14
13
12
11
10
9.2
8.5
6.9
26
26
25
23
21
20
18
17
15
14
13
12
11
10
9.4
8.6
7.9
7
24
24
23
21
20
18
17
15
14
13
12
11
10
9.4
8.6
8
7.3
7.1
22
22
21
20
18
17
15
14
13
12
11
10
9.3
8.5
7.9
7.2
6.7
7.2
20
20
19
18
16
15
14
13
12
11
9.8
9.1
8.3
7.7
7.1
6.5
6
7.3
18
18
17
16
14
13
12
11
10
9.5
8.7
8
7.4
6.8
6.3
5.8
5.3
7.4
15
15
15
14
13
12
11
9.8
9
8.3
7.7
7
6.5
6
5.5
5.1
4.7
7.5
13
13
13
12
11
10
9.2
8.5
7.8
7.2
6.6
6.1
5.6
5.2
4.8
4.4
4
7.6
11
11
11
10
9.3
8.6
7.9
7.3
6.7
6.2
5.7
5.2
4.8
4.4
4.1
3.8
3.5
7.7
9.6
9.6
9.3
8.6
7.9
7.3
6.7
6.2
5.7
5.2
4.8
4.4
4.1
3.8
3.5
3.2
3
7.8
8.1
8.1
7.9
7.2
6.7
6.1
5.6
5.2
4.8
4.4
4
3.7
3.4
3.2
2.9
2.7
2.5
7.9
6.8
6.8
6.6
6
5.6
5.1
4.7
4.3
4
3.7
3.4
3.1
2.9
2.6
2.4
2.2
2.1
8
5.6
5.6
5.4
5
4.6
4.2
3.9
3.6
3.3
3
2.8
2.6
2.4
2.2
2
1.9
1.7
8.1
4.6
4.6
4.5
4.1
3.8
3.5
3.2
3
2.7
2.5
2.3
2.1
2
1.8
1.7
1.5
1.4
8.2
3.8
3.8
3.7
3.5
3.1
2.9
2.7
2.4
2.3
2.1
1.9
1.8
1.6
1.5
1.4
1.3
1.2
8.3
3.1
3.1
3.1
2.8
2.6
2.4
2.2
2
1.9
1.7
1.6
1.4
1.3
1.2
1.1
1
0.96
8.4
2.6
2.6
2.5
2.3
2.1
2
1.8
1.7
1.5
1.4
1.3
1.2
1.1
1
0.93
0.86
0.79
8.5
2.1
2.1
2.1
1.9
1.8
1.6
1.5
1.4
1.3
1.2
1.1
0.98
0.9
0.83
0.77
0.71
0.65
8.6
1.8
1.8
1.7
1.6
1.5
1.3
1.2
1.1
1
0.96
0.88
0.81
0.75
0.69
0.63
0.59
0.54
8.7
1.5
1.5
1.4
1.3
1.2
1.1
1
0.94
0.87
0.8
0.74
0.68
0.62
0.57
0.53
0.49
0.45
8.8
1.2
1.2
1.2
1.1
1
0.93
0.86
0.79
0.73
0.67
0.62
0.57
0.52
0.48
0.44
0.41
0.37
8.9
1
1
1
0.93
0.85
0.79
0.72
0.67
0.61
0.56
0.52
0.48
0.44
0.4
0.37
0.34
0.32
9
0.88
0.88
0.86
0.79
0.73
0.67
0.62
0.57
0.52
0.48
0.44
0.41
0.37
0.34
0.32
0.29
0.27
Click here to
							 view
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 12 - Acute Standards for Total Ammonia (in mg/L, as N) for Aquatic and Wildlife Warmwater AZ, Unionid Mussels Present

Current through Register Vol. 30, No. 28, July 12, 2024
For the Aquatic and Wildlife Warmwater AZ uses, unionids
				  will be assumed to be present unless a study is performed demonstrating that
				  they are absent and there is no historic evidence of their presence, or
				  hydrologic modification has altered the flow regime in a way that would prevent
				  their reestablishment.
pH
Temperature
							 (°C)
0-10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
6.5
51
48
44
41
37
34
32
29
27
25
23
21
19
18
16
15
14
13
12
11
9.9
6.6
49
46
42
39
36
33
30
28
26
24
22
20
18
17
16
14
13
12
11
10
9.5
6.7
46
44
40
37
34
31
29
27
24
22
21
19
18
16
15
14
13
12
11
9.8
9
6.8
44
41
38
35
32
30
27
25
23
21
20
18
17
15
14
13
12
11
10
9.2
8.5
6.9
41
38
35
32
30
28
25
23
21
20
18
17
15
14
13
12
11
10
9.4
8.6
7.9
7
38
35
33
30
28
25
23
21
20
18
17
15
14
13
12
11
10
9.4
8.6
7.9
7.3
7.1
34
32
30
27
25
23
21
20
18
17
15
14
13
12
11
10
9.3
8.5
7.9
7.2
6.7
7.2
31
29
27
25
23
21
19
18
16
15
14
13
12
11
9.8
9.1
8.3
7.7
7.1
6.5
6
7.3
27
26
24
22
20
18
17
16
14
13
12
11
10
9.5
8.7
8
7.4
6.8
6.3
5.8
5.3
7.4
24
22
21
19
18
16
15
14
13
12
11
9.8
9
8.3
7.7
7
6.5
6
5.5
5.1
4.7
7.5
21
19
18
17
15
14
13
12
11
10
9.2
8.5
7.8
7.2
6.6
6.1
5.6
5.2
4.8
4.4
4
7.6
18
17
15
14
13
12
11
10
9.3
8.6
7.9
7.3
6.7
6.2
5.7
5.2
4.8
4.4
4.1
3.8
3.5
7.7
15
14
13
12
11
10
9.3
8.6
7.9
7.3
6.7
6.2
5.7
5.2
4.8
4.4
4.1
3.8
3.5
3.2
2.9
7.8
13
12
11
10
9.3
8.5
7.9
7.2
6.7
6.1
5.6
5.2
4.8
4.4
4
3.7
3.4
3.2
2.9
2.7
2.5
7.9
11
9.9
9.1
8.4
7.7
7.1
6.6
3
5.6
5.1
4.7
4.3
4
3.7
3.4
3.1
2.9
2.6
2.4
2.2
2.1
8
8.8
8.2
7.6
7
6.4
5.9
5.4
5
4.6
4.2
3.9
3.6
3.3
3
2.8
2.6
2.4
2.2
2
1.9
1.7
8.1
7.2
6.8
6.3
5.8
5.3
4.9
4.5
4.1
3.8
3.5
3.2
3
2.7
2.5
2.3
2.1
2
1.8
1.7
1.5
1.4
8.2
6
5.6
5.2
4.8
4.4
4
3.7
3.4
3.1
2.9
2.7
2.4
2.3
2.1
1.9
1.8
1.6
1.5
1.4
1.3
1.2
8.3
4.9
4.6
4.3
3.9
3.6
3.3
3.1
2.8
2.6
2.4
2.2
2
1.9
1.7
1.6
1.4
1.3
1.2
1.1
1
0.96
8.4
4.1
3.8
3.5
3.2
3
2.7
2.5
2.3
2.1
2
1.8
1.7
1.5
1.4
1.3
1.2
1.1
1
0.93
0.86
0.79
8.5
3.3
3.1
2.9
2.7
2.4
2.3
2.1
1.9
1.8
1.6
1.5
1.4
1.3
1.2
1.1
0.98
0.9
0.83
0.77
0.71
0.65
8.6
2.8
2.6
2.4
2.2
2
1.9
1.7
1.6
1.5
1.3
1.2
1.1
1
0.96
0.88
0.81
0.75
0.69
0.63
0.58
0.54
8.7
2.3
2.2
2
1.8
1.7
1.6
1.4
1.3
1.2
1.1
1
0.94
0.87
0.8
0.74
0.68
0.62
0.57
0.53
0.49
0.45
8.8
1.9
1.8
1.7
1.5
1.4
1.3
1.2
1.1
1
0.93
0.86
0.79
0.73
0.67
0.62
0.57
0.52
0.48
0.44
0.41
0.37
8.9
1.6
1.5
1.4
1.3
1.2
1.1
1
0.93
0.85
0.79
0.72
0.67
0.61
0.56
0.52
0.48
0.44
0.4
0.37
0.34
0.32
9
1.4
1.3
1.2
1.1
1
0.93
0.86
0.79
0.73
0.67
0.62
0.57
0.52
0.48
0.44
0.41
0.37
0.34
0.32
0.29
0.27
Click here to
							 view
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 14 - Acute Standards for Total Ammonia (in mg/L, as N) for Aquatic and Wildlife Coldwater AZ, Unionid Mussels Absent

Current through Register Vol. 30, No. 28, July 12, 2024
For the Aquatic and Wildlife Coldwater uses, unionids will
				  be assumed to be present unless a study is performed demonstrating that they
				  are absent and there is no historic evidence of their presence, or hydrologic
				  modification has altered the flow regime in a way that would prevent their
				  reestablishment.
Temperature
							 (°C)
pH
0-14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
6.5
33
33
33
33
33
33
33
33
33
33
33
33
33
33
31
29
27
6.6
31
31
31
31
31
31
31
31
31
31
31
31
31
31
30
28
26
6.7
30
30
30
30
30
30
30
30
30
30
30
30
30
30
29
26
24
6.8
28
28
28
28
28
28
28
28
28
28
28
28
28
28
27
25
23
6.9
26
26
26
26
26
26
26
26
26
26
26
26
26
26
25
23
21
7
24
24
24
24
24
24
24
24
24
24
24
24
24
24
23
21
20
7.1
22
22
22
22
22
22
22
22
22
22
22
22
22
22
21
19
18
7.2
20
20
20
20
20
20
20
20
20
20
20
20
20
20
19
17
16
7.3
18
18
18
18
18
18
18
18
18
18
18
18
18
18
17
16
14
7.4
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
14
13
7.5
13
13
13
13
13
13
13
13
13
13
13
13
13
13
13
12
11
7.6
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
10
9.3
7.7
9.6
9.6
9.6
9.6
9.6
9.6
9.6
9.6
9.6
9.6
9.6
9.6
9.6
9.6
9.3
8.6
7.9
7.8
8.1
8.1
8.1
8.1
8.1
8.1
8.1
8.1
8.1
8.1
8.1
8.1
8.1
8.1
7.8
7.2
6.6
7.9
6.8
6.8
6.8
6.8
6.8
6.8
6.8
6.8
6.8
6.8
6.8
6.8
6.8
6.8
6.5
6
5.5
8
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.6
5.4
5
4.6
8.1
4.6
4.6
4.6
4.6
4.6
4.6
4.6
4.6
4.6
4.6
4.6
4.6
4.6
4.6
4.5
4.1
3.8
8.2
3.8
3.8
3.8
3.8
3.8
3.8
3.8
3.8
3.8
3.8
3.8
3.8
3.8
3.8
3.7
3.4
3.1
8.3
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3.2
3
2.8
2.6
8.4
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.5
2.3
2.1
8.5
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
2.1
1.9
1.8
8.6
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.8
1.7
1.6
1.4
8.7
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.4
1.3
1.2
8.8
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.1
1
8.9
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0.92
0.85
9
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.88
0.85
0.78
0.72
Click here to
							 view
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 2 - WATER QUALITY STANDARDS FOR NON-WOTUS PROTECTED SURFACE WATERS › Table 15 - Acute Standards for Total Ammonia (in mg/L, as N) for Aquatic and Wildlife Warmwater AZ Uses, Unionid Mussels Absent

Current through Register Vol. 30, No. 28, July 12, 2024
For the Aquatic and Wildlife Warmwater uses, unionids will
				  be assumed to be present unless a study is performed demonstrating that they
				  are absent and there is no historic evidence of their presence, or hydrologic
				  modification has altered the flow regime in a way that would prevent their
				  reestablishment. For the aquatic and wildlife effluent dependent uses, unionids
				  will be assumed to be absent.
pH
Temperature
							 (°C)
0-14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
6.5
51
51
51
51
51
51
51
51
51
48
44
40
37
34
31
29
27
6.6
49
49
49
49
49
49
49
49
49
46
42
39
36
33
30
28
26
6.7
46
46
46
46
46
46
46
46
46
43
40
37
34
31
29
26
24
6.8
44
44
44
44
44
44
44
44
44
41
38
35
32
29
27
25
23
6.9
41
41
41
41
41
41
41
41
41
38
35
32
30
27
25
23
21
7
38
38
38
38
38
38
38
38
38
35
32
30
27
25
23
21
20
7.1
34
34
34
34
34
34
34
34
34
32
29
27
25
23
21
19
18
7.2
31
31
31
31
31
31
31
31
31
29
26
24
22
21
19
17
16
7.3
27
27
27
27
27
27
27
27
27
26
23
22
20
18
17
16
14
7.4
24
24
24
24
24
24
24
24
24
22
21
19
17
16
15
14
13
7.5
21
21
21
21
21
21
21
21
21
19
18
16
15
14
13
12
11
7.6
18
18
18
18
18
18
18
18
18
17
15
14
13
12
11
10
9.3
7.7
15
15
15
15
15
15
15
15
15
14
13
12
11
10
9.3
8.6
7.9
7.8
13
13
13
13
13
13
13
13
13
12
11
10
9.2
8.5
7.8
7.2
6.6
7.9
11
11
11
11
11
11
11
11
11
9.9
9.1
8.4
7.7
7.1
6.5
6
5.5
8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.8
8.2
7.5
6.9
6.4
5.9
5.4
5
4.6
8.1
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
6.8
6.2
5.7
5.3
4.9
4.5
4.1
3.8
8.2
6
6
6
6
6
6
6
6
6
5.6
5.1
4.7
4.4
4
3.7
3.4
3.1
8.3
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.9
4.6
4.2
3.9
3.6
3.3
3
2.8
2.6
8.4
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
4.1
3.8
3.4
3.2
3
2.7
2.5
2.3
2.1
8.5
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.1
2.9
2.6
2.4
2.2
2.1
1.9
1.8
8.6
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.8
2.6
2.4
2.2
2
1.9
1.7
1.6
1.4
8.7
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.3
2.2
2
1.8
1.7
1.5
1.4
1.3
1.2
8.8
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.9
1.8
1.7
1.5
1.4
1.3
1.2
1.1
1
8.9
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.5
1.4
1.3
1.2
1.1
1
0.92
0.85
9
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.4
1.3
1.2
1.1
1
0.93
0.85
0.78
0.72
Click here
				  to view