reglab/statecodes huggingface dataset:
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 R18-9-1014 - Reporting

Current through Register Vol. 30, No. 28, July 12, 2024
A. A person who
				prepares biosolids for application shall provide the applicator with the
				necessary information to comply with this Article including the concentration
				of pollutants listed in
				R18-9-1005
				and the concentration of nitrogen in the biosolids.
B. A transporter shall report spills to the
				Department under
				R18-9-1011(D).
C. A bulk applicator of biosolids other than
				exceptional quality biosolids shall provide the land owner and lessee of land
				application sites with information on the concentrations of the pollutants
				listed in
				R18-9-1005
				and loading rates of biosolids applied to that site, and any applicable site
				restrictions under
				R18-9-1009.
D. A bulk applicator of biosolids other than
				exceptional quality biosolids shall report to the Department if 90% or more of
				any cumulative pollutant loading rate has been used at a site.
E. On or before February 19 of each year, any
				person land-applying bulk biosolids that are not exceptional quality biosolids
				shall, by letter or on a form provided by the Department, report to the
				Department the following applicable information for the previous calendar year:
1. The actual sites used; and
2. For each site used, the following
				information:
a. The amount of biosolids
				applied (in tons or kilograms per acre or hectare);
b. The application loading rates (in tons or
				kilograms per acre or hectare, and gallons per acre for domestic
				septage);
c. The concentrations of
				the pollutants listed in
				R18-9-1005
				(in milligrams per kilogram of biosolids on a dry-weight basis);
d. The pathogen treatment methodologies used
				during the year and the results; and
e. The vector attraction reduction
				methodologies used during the year and the results.
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 R18-9-1015 - Inspection

Current through Register Vol. 30, No. 28, July 12, 2024
A person subject to this Article shall allow, during
				  reasonable times, a representative of the Department to enter property subject
				  to this Article, to:
1. Inspect all
				biosolids pathogen and vector treatment facilities, transportation vehicles,
				incinerators that fire sewage sludge, and land application sites to determine
				compliance with this Article;
2.
				Inspect and copy records prepared in accordance with this Article;
				and
3. Sample biosolids
				quality.
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 › Appendix A - Procedures to Determine Annual Biosolids Application Rates

Current through Register Vol. 30, No. 28, July 12, 2024
The following procedure determines the annual biosolids
				  application rate (ABAR) that ensures that the annual pollutant loading rates in
				  Table 3 of R18-9-1005 are not exceeded.
1. The relationship between the annual
				pollutant loading rate (APLR) for a pollutant and the ABAR is shown in the
				following equation.
APLR = C x ABAR x 0.001
APLR = Annual pollutant loading rate in kilograms of
				  biosolids, per hectare, per 365-day period;
C = Pollutant concentration in milligrams, per kilogram of
				  total solids (dry-weight basis);
ABAR = Annual biosolids application rate in metric tons, per
				  hectare, per 365-day period (dry-weight basis); and
0.001 = A conversion factor.
metric ton = 1.102 short tons
hectare = 2.471 acres
2. The ABAR is calculated using the following
				procedure:
a. Analyze a biosolids sample to
				determine a concentration for each of the pollutants listed in Table 3 of
				R18-9-1005; and
b. Using each of
				the pollutant concentrations from subsection (2)(a) and the APLRs from Table 3
				of R18-9-1005, calculate a separate ABAR for each pollutant using the following
				equation:
Click here to
				  view Image
c.
				The ABAR for biosolids is the lowest value calculated in under subsection
				(2)(b) for any pollutant.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-102 - Applicability

Current through Register Vol. 30, No. 28, July 12, 2024
A. The water
				quality standards prescribed in this Article apply to 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 a 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 that is not a surface
				water or is located in an area that once was a surface water but is no longer a
				surface water because it has been and remains legally converted, including:
a. A pit,
b. Pregnant leach solution pond,
c. Raffinate pond,
d. Tailing impoundment,
e. Decant pond,
f. Pond or a sump in a mine pit associated
				with dewatering activity,
g. Pond
				holding water that has come into contact with a process or product and that is
				being held for recycling,
h. Spill
				or upset 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.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-105 - Tributaries; Designated Uses

Current through Register Vol. 30, No. 28, July 12, 2024
The following water quality standards apply to a surface
				  water that is not listed in Appendix B but that is a tributary to a listed
				  surface water.
1. The aquatic and
				wildlife (ephemeral) and partial-body contact standards apply to an unlisted
				tributary that is an ephemeral water.
2. The aquatic and wildlife (cold water),
				full-body contact, and fish consumption standards apply to an unlisted
				tributary that is a perennial or intermittent surface water and is above 5000
				feet in elevation.
3. The aquatic
				and wildlife (warm water), full-body contact, and fish consumption standards
				apply to an unlisted tributary that is a perennial or intermittent surface
				water and is below 5000 feet in elevation.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-106 - Net Ecological Benefit

Current through Register Vol. 30, No. 28, July 12, 2024
A.
				The Director may, by rule, modify a water quality standard on the ground that
				there is a net ecological benefit associated with the discharge of effluent to
				support or create a riparian and aquatic habitat in an area where water
				resources are limited. The Director may modify a water quality standard for a
				pollutant if it is demonstrated that:
1. The
				discharge of effluent creates or supports an ecologically valuable aquatic,
				wetland, or riparian ecosystem in an area where these resources are
				limited;
2. The ecological benefits
				associated with the discharge of effluent under a modified water quality
				standard exceed the environmental costs associated with the elimination of the
				discharge of effluent;
3. The cost
				of treatment to achieve compliance with a water quality standard is so high
				that it is more cost effective to eliminate the discharge of effluent to the
				surface water. The discharger shall demonstrate that it is feasible to
				eliminate the discharge of effluent that creates or supports the ecologically
				valuable aquatic, wetland, or riparian ecosystem;
4. The discharge of effluent to the surface
				water will not cause or contribute to a violation of a water quality standard
				that has been established for a downstream surface water;
5. All practicable point source discharge
				control programs, including local pretreatment, waste minimization, and source
				reduction programs are implemented; and
6. The discharge of effluent does not produce
				or contribute to the concentration of a pollutant in the tissues of aquatic
				organisms or wildlife that is likely to be harmful to humans or wildlife
				through food chain concentration.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-107 - Antidegradation

Current through Register Vol. 30, No. 28, July 12, 2024
A. The Director
				shall, using
				R18-11-107.01
				and this Section, determine whether there is degradation of water quality in a
				surface water on a pollutant-by-pollutant basis.
B. Tier 1: The level of water quality
				necessary to support an existing use shall be maintained and protected. No
				degradation of existing water quality is permitted in a surface water where the
				existing water quality does not meet the applicable water quality
				standards.
C. Tier 2: Where
				existing water quality in a surface water is better than the applicable water
				quality standard the existing water quality shall be maintained and protected.
				The Director may allow degradation of existing water quality in the surface
				water, if the Director makes all of the following findings:
1. The water quality necessary for existing
				uses is fully protected and water quality is not lowered to a level that does
				not comply with applicable water quality standards,
2. The highest statutory and regulatory
				requirements for new and existing point sources are achieved,
3. All cost-effective and reasonable best
				management practices for nonpoint source pollution control are implemented,
				and
4. Allowing lower water quality
				is necessary to accommodate important economic or social development in the
				area where the surface water is located.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-107.01 - Antidegradation Criteria

Current through Register Vol. 30, No. 28, July 12, 2024
A. Tier 1
				antidegradation protection.
1. Tier 1
				antidegradation protection applies to the following surface waters:
a. A surface water listed on the 303(d) list
				for the pollutant that resulted in the listing,
b. An effluent dependent water,
c. An ephemeral water,
d. An intermittent water, and
e. A canal listed in Appendix B.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-108 - Narrative Water Quality Standards

Current through Register Vol. 30, No. 28, July 12, 2024
A. A 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 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
				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 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-108.01 - Narrative Biological Criteria for Wadeable, Perennial Streams

Current through Register Vol. 30, No. 28, July 12, 2024
A. The narrative
				biological criteria in this Section apply to a wadeable, perennial stream with
				either an aquatic and wildlife (cold water) or an aquatic and wildlife (warm
				water) designated use.
B. The
				biological standard in
				R18-11-108(E)
				is met when a bioassessment result, as measured by the Arizona Index of
				Biological Integrity (IBI), for cold or warm water is:
1. Greater than or equal to the 25th
				percentile of reference condition, or
2. Greater than the 10th percentile of
				reference condition and less than the 25th percentile of reference condition
				and a verification bioassessment result is greater than or equal to the 25th
				percentile of reference condition.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-108.02 - Narrative Bottom Deposit Criteria for Wadeable, Perennial Streams

Current through Register Vol. 30, No. 28, July 12, 2024
A. The narrative
				bottom deposit criteria in this Section apply to wadeable, perennial streams
				with an aquatic and wildlife (cold water) or an aquatic and wildlife (warm
				water) designated use.
B. The
				narrative water quality standard for bottom deposits at
				R18-11-108(A)(1)
				is met when:
1. The percentage of fine
				sediments in the riffle habitats of a wadeable, perennial stream with an
				A&Wc designated use, as determined by a riffle pebble count, is less than
				or equal to 30 percent.
2. The
				percentage of fine sediments in all stream habitats of a wadeable, perennial
				stream with an A&Ww designated use, as determined by a reach level pebble
				count, is equal to or less than 50 percent.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-108.03 - Narrative Nutrient Criteria for Lakes and Reservoirs

Current through Register Vol. 30, No. 28, July 12, 2024
A. The narrative nutrient criteria in this
				Section apply to those lakes and reservoirs categorized in Appendix
				B.
B. The narrative water quality
				standard for nutrients at
				R18-11-108(A)(6)
				is met when, based on a minimum of two lake sample events conducted during the
				peak season based on lake productivity, the results show an average
				chlorophyll-a value below the applicable threshold for designated use and lake
				and reservoir category in subsection (D).
1.
				The mean chlorophyll-a concentration is less than the lower value in the target
				range chlorophyll-a for the lake and reservoir category, or
2. The mean chlorophyll-a concentration is
				within the target range for the lake and reservoir category and:
a. The mean blue green algae count is at or
				below 20,000 per milliliter, and
b.
				The blue green algae count is less than 50 percent of the total algae count,
				and
c. There is no evidence of
				nutrient-related impairments such as:
i. An
				exceedance of dissolved oxygen or pH standards;
ii. A fish kill coincident with a dissolved
				oxygen or pH exceedance;
iii. A
				fish kill or other aquatic organism mortality coincident with algal
				toxicity;
iv. Secchi depth is less
				than the lower value prescribed for the lake and reservoir category;
v. A nuisance algal bloom is present in the
				limnetic portion of the lake or reservoir; or
vi. The concentration of total phosphorous,
				total nitrogen, or total Kjehldal nitrogen (TKN) is greater than the upper
				value in the range prescribed for the lake and reservoir category; or
3. For a shallow lake.
				In addition to meeting the mean chlorophyll-a concentrations in subsections
				(B)(1) or (2), submerged aquatic vegetation covers 50 percent or less of the
				lake bottom and there is less than a 5 mg/L swing in diel-dissolved oxygen
				concentration measured within the photic zone.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-109 - Numeric Water Quality Standards

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
PBC
Geometric mean (minimum of four samples in 30
							 days)
126
126
Statistical threshold value
410
576
B.
				pH. The following water quality standards for pH are expressed in standard
				units:
pH
DWS
FBC, PBC, A&W 
							 1
AgI
AgL
Maximum
9.0
9.0
9.0
9.0
Minimum
5.0
6.5
4.5
6.5
Footnotes:
1. 
										"1" Includes A&Wc, A&Ww,
				A&Wedw, and A&We.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-110 - Salinity Standards for the Colorado River

Current through Register Vol. 30, No. 28, July 12, 2024
A. The flow-weighted average annual salinity
				in the lower main stem of the Colorado River shall not exceed the following
				criteria:
Location Total
Dissolved Solids
Below Hoover Dam
723 mg/L
Below Parker Dam
747 mg/L
At Imperial Dam
879 mg/L
B.
				The plan of implementation contained in the "2014 Review, Water Quality
				Standards for Salinity, Colorado River System," approved October 2014, is
				incorporated by reference to preserve the basin-wide approach to salinity
				control developed by the Colorado River Basin Salinity Control Forum and to
				ensure compliance with the numeric criteria for salinity in subsection (A).
				This material does not include any later amendments or editions of the
				incorporated material. Copies of the incorporated material are available for
				inspection at the Arizona Department of Environmental Quality, 1110 West
				Washington Street, Phoenix, Arizona 85007 or may be obtained from the Colorado
				River Basin Salinity Control Forum, 106 West 500 South, Suite 101, Bountiful,
				Utah 84010-6232 or at
http://www.coloradoriversalinity.org/
.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-111 - 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,
				40 CFR
				136.3, or an alternative analytical 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. §
									36-495.14,
				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 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-112 - Outstanding Arizona Waters

Current through Register Vol. 30, No. 28, July 12, 2024
A. The
				Director shall classify a surface water as an outstanding Arizona water (OAW)
				by rule.
B. The Director may adopt,
				under
				R18-11-115,
				a site-specific standard to maintain and protect existing water quality in an
				OAW.
C. Any person may nominate a
				surface water for classification as an OAW by filing a nomination with the
				Director. The nomination shall include:
1. A
				map and a description of the surface water;
2. A written statement in support of the
				nomination, including specific reference to the applicable criteria for an OAW
				classification prescribed in subsection (D);
3. Supporting evidence demonstrating that the
				criteria prescribed in subsection (D) are met; and
4. Available water quality data relevant to
				establishing the baseline water quality of the proposed OAW.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-113 - Effluent-dependent Waters

Current through Register Vol. 30, No. 28, July 12, 2024
A. The Director
				shall classify a surface water as an effluent-dependent water by
				rule.
B. The Director may adopt,
				under
				R18-11-115,
				a site-specific water quality standard for an effluent-dependent
				water.
C. Any person may submit a
				petition for rule adoption requesting that the Director classify a surface
				water as an effluent-dependent water. The petition shall include:
1. A map and a description of the surface
				water;
2. Information that
				demonstrates that the surface water consists of a point source discharge of
				wastewater; and
3. Information that
				demonstrates that, without a point source discharge of a wastewater, the
				receiving water is an ephemeral water.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-114 - 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 surface water as
				a condition of an individual AZPDES permit on a pollutant-by-pollutant basis. A
				mixing zone is prohibited in an ephemeral water or where there is no water for
				dilution, or asprohibited pursuant to subsection (H) of this section.
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) of this
				section that the Director must consider when deciding to grant or deny a
				request and shall address the mixing zone requirements in subsection (H) of
				this section.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-115 - 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 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 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 Appendix
				A;
3. Resident aquatic organisms
				that occur in a 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 Appendix A;
4. The
				natural background concentration of a pollutant is greater than the numeric
				water quality standard to protect aquatic life prescribed in Appendix A.
				"Natural background" means the concentration of a pollutant in a 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 surface
				water.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-116 - Resource Management Agencies

Current through Register Vol. 30, No. 28, July 12, 2024
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.
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-117 - Canals and Urban Park Lakes

Current through Register Vol. 30, No. 28, July 12, 2024
A.
				Nothing in this Article prevents the routine physical or mechanical maintenance
				of canals, drains, and the urban lakes identified in Appendix B. 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 in Appendix B.
B. The discharge of lubricating oil
				associated with the start-up of well pumps that discharge to canals is not a
				violation of
				R18-11-108(B).
Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 11 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY STANDARDS › Article 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-118 - Dams and Flood Control Structures

Current through Register Vol. 30, No. 28, July 12, 2024
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. 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 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-119 - 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 not caused by human activity but is due
				  solely to 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 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-120 - Enforcement of Non-permitted Discharges

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) of this section, 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 "non-permitted 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 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-121 - 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
				  all requirements under § 301(b) and § 306 of the Clean Water Act [
				  33 U.S.C.
				  1311(b) and
				  1316
				  ] are achieved and 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 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Section R18-11-123 - Discharge Prohibitions

Current through Register Vol. 30, No. 28, July 12, 2024
A. The
				discharge of wastewater to the following surface waters is prohibited:
1. Sabino Canyon Creek;
2. Vekol Wash, upstream of the Ak-Chin Indian
				Reservation; and
3. Smith Wash,
				upstream of the Ak-Chin Indian Reservation.
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 2 - Acute Water Quality Standards for Dissolved Cadmium

Current through Register Vol. 30, No. 28, July 12, 2024
Aquatic and Wildlife
								coldwater
Aquatic and Wildlife warm
								water, and edw
Aquatic and Wildlife
								ephemeral
Hard. mg/L
Std. µg/L
Hard. mg/L
Std. µg/L
Hard. mg/L
Std. µg/L.
20
0.40
20
2.1
20
4.9
100
1.8
100
9.4
100
22
400
6.5
400
34
400
80
e(0.9789*LN(Hardness)-3.866)*(1.136672-LN(Hardness)*0.041838)
e(0.9789*LN(Hardness)-2.208)*(1.136672-LN(Hardness)*0.041838)
e(0.9789*LN(Hardness)-1.363)
								(1.136672-LN(Hardness)*0.041838)
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 3 - Chronic Water Quality Standards for Dissolved Cadmium

Current through Register Vol. 30, No. 28, July 12, 2024
Aquatic and Wildlife
								coldwater, warmwater, and edw
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 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Appendix A - Numeric Water Quality Standards › Table 4 - Water Quality Standards for Dissolved Chromium III

Current through Register Vol. 30, No. 28, July 12, 2024
Acute Aquatic and Wildlife
								coldwater, warmwater and edw
Chronic Aquatic and Wildlife
								coldwater, warmwater and edw
Acute Aquatic and Wildlife
								ephemeral
Hard. mg/L
Std. µg/L
Hard. mg/L
Std. µg/L
Hard. mg/L
Std. µg/L
20
152
20
19.8
20
512
100
570
100
74.1
100
1,912
400
1,773
400
231
400
5,950
e(0.819*LN(Hardness)+3.7256)*(0.316)
e(0.819*LN(Hardness)+0.6848)*(0.86)
e(0.819*LN(Hardness)+4.9361)
								* (0.316)
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 5 - Water Quality Standards for Dissolved Copper

Current through Register Vol. 30, No. 28, July 12, 2024
Acute Aquatic and Wildlife
								coldwater, warmwater and edw
Chronic Aquatic and Wildlife
								coldwater, warmwater and edw
Acute Aquatic and Wildlife
								ephemeral
Hard. mg/L
Std. µg/L
Hard. mg/L
Std. µg/L
Hard. mg/L
Std. µg/L
20
2.9
20
2.3
20
5.1
100
13
100
9.0
100
23
400
50
400
29
400
86
e(0.9422*LN(Hardness)-1.702)*(0.96)
e(0.8545*LN(Hardness)-1.702)*(0.96)
e(0.9422*LN(Hardness)-1.1514)*(0.96)
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 6 - Water Quality Standards for Dissolved Lead

Current through Register Vol. 30, No. 28, July 12, 2024
Acute Aquatic and Wildlife
								coldwater, warmwater and edw
Chronic Aquatic and Wildlife
								coldwater, warmwater and edw
Acute Aquatic and Wildlife
								ephemeral
Hard. mg/L
Std. µg/L
Hard. mg/L
Std. µg/L
Hard. mg/L
Std. µg/L
20
10.8
20
0.42
20
22.8
100
64.6
100
2.5
100
136.3
400
281
400
10.9
400
592.7
e(1.273*LN(Hardness)-1.46)*(1.46203-e
								(LN(Hardness))*(0.145712))
e(1.273*LN(Hardness)-4.705) 
								*
								(1.46203-(LN(Hardness))*(0.145712))
e(1.273*(LN(Hardness))-0.7131)
								
								*
								(1.46203-(LN(Hardness))*(0.145712))
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 7 - Water Quality Standards for Dissolved Nickel

Current through Register Vol. 30, No. 28, July 12, 2024
Acute Aquatic and Wildlife
								coldwater, warmwater and edw
Chronic Aquatic and Wildlife
								coldwater, warmwater and edw
Acute Aquatic and Wildlife
								ephemeral
Hard. mg/L
Std. µg/L
Hard. mg/L
Std. µg/L
Hard. mg/L
Std. µg/L
20
120.0
20
13.3
20
1066
100
468
100
52.0
100
4158
400
1513
400
168
400
13436
e(0.846*LN(Hardness)+2.255)*(0.998)
e(0.846*LN(Hardness)+0.0584)*(0.997)
e(0.846*LN(Hardness)+4.4389)*(0.998)
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 8 - Water Quality Standards for Dissolved Silver

Current through Register Vol. 30, No. 28, July 12, 2024
Acute Aquatic and Wildlife
								coldwater, warmwater, edw, and ephemeral
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 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Appendix A - Numeric Water Quality Standards › 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, warmwater and edw
Acute Aquatic and Wildlife
								ephemeral
Hard. mg/L
Std. µg/L
Hard. mg/L
Std. µg/L
20
30.0
20
284
100
117
100
1112
400
379
400
3599
e(0.8473*LN(Hardness)+0.884)*(0.978)
e(0.8473*LN(Hardness)+3.1342)*(0.978)
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 10 - Water Quality Standards for Pentachlorophenol

Current through Register Vol. 30, No. 28, July 12, 2024
Acute Aquatic and Wildlife
								coldwater, warmwater and edw
Chronic Aquatic and Wildlife
								coldwater, warmwater and edw
Acute Aquatic and Wildlife
								ephemeral
pH
µg/L
pH
µg/L
pH
µg/L
3
0.16
3
0.1
3
0.66
6
3.3
6
2.1
6
13.5
9
67.7
9
42.7
9
274
e(1.005*(pH)-4.83)
e(1.005*(pH)-5.29)
e(1.005*(pH)-3.4306)
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 11 - Acute Standards for Total Ammonia (in mg/L, as N) for Aquatic and Wildlife coldwater, Unionid Mussels Present

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
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 1 - WATER QUALITY STANDARDS FOR SURFACE WATERS › Appendix A - Numeric Water Quality Standards › Table 12 - Acute Standards for Total Ammonia (in mg/L, as N) for Aquatic and Wildlife warmwater, Unionid Mussels Present

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.
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
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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 14 - Acute Standards 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.
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
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