Statutes, codes, and regulations
Utah Administrative Code
Environmental QualityTitle R317 - Water Quality
Rule R317-2 - Standards of Quality for Waters of the State
Section R317-2-14 - Numeric Criteria

Utah Admin. Code 317-2-14

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Current through Bulletin 2024-23, December 1, 2024
Section R317-2-14 - Numeric Criteria

TABLE 2.14.1

NUMERIC CRITERIA FOR DOMESTIC,

RECREATION, AND AGRICULTURAL USES

Parameter

Domestic Source

Recreation and Aesthet

Agriculture

1C(1)

2A

2B

4

BACTERIOLOGICAL (30-DAY GEOMETRIC MEAN) (NO.)/100 ML) (7) E. coli

206

126

206

MAXIMUM (NO.)/100 ML) (7) E. coli

668

409

668

PHYSICAL

pH (RANGE)

6.5-9.0

6.5-9.0

6.5-9.0

6.5-9.0

Turbidity Increase (NTU)

10

10

METALS (DISSOLVED, MAXIMUM MG/L) (2)

Arsenic

0.01

0.1

Barium

1.0

Beryllium

<0.004

Cadmium

0.01

0.01

Chromium

0.05

0.10

Copper

0.2

Lead

0.015

0.1

Mercury

0.002

Selenium

0.05

0.05

Silver

0.05

INORGANICS (MAXIMUM MG/L)

Bromate

0.01

Boron

0.75

Chlorite

<1.0

Fluoride

4.0

Nitrates as N

10

Total Dissolved Solids (4)

1200

RADIOLOGICAL (MAXIMUM pCi/L)

Gross Alpha

15

15

Gross Beta

4 mrem/yr

Radium 226, 228

(Combined)

5

Strontium 90

8

Tritium

20000

Uranium

30

ORGANICS (MAXIMUM UG/L)

2,4-D 94-75-7

70

2,4,5-TP 93-72-1

10

Alachlor 15972-60-8

2

Atrazine 1912-24-9

3

Carbofuran 1563-66-2

40

Dichloroethylene (cis- 1, 2) 156-59-2

70

Dalapon 75-99-0

200

Di(2ethylhexl)adipate 103-23-1

400

Dibromochloropropane 96-12-8

0.2

Dinoseb 88-85-7

7

Diquat 85-00-7

20

Endothall 145-73-3

100

Ethylene Dibromide 106-93-4

0.05

Glyphosate 1071-83-6

700

Xylenes 1330-20-7

10,000

POLLUTION INDICATORS (5)

BOD (MG/L)

5

5

5

Nitrate as N (MG/L)

4

4

Total Phosphorus as P (MG/L)(6)

0.05

0.05

FOOTNOTES:

(1) See also numeric criteria for water and organism in Table 2.14.6.
(2) The dissolved metals method involves filtration of the sample in the field, acidification of the sample in the field, no digestion process in the laboratory, and analysis by approved laboratory methods for the required detection levels.
(3) Reserved
(4) SITE SPECIFIC STANDARDS FOR TOTAL DISSOLVED SOLIDS (TDS)

Blue Creek and tributaries, Box Elder County, from Bear River Bay, Great Salt Lake to Blue Creek Reservoir: March through October daily maximum 4,900 mg/l and an average of 3,800 mg/l; November through February daily maximum 6,300 mg/l and an average of 4,700 mg/l. Assessments will be based on TDS concentrations measured at the location of STORET 4960740.;

Blue Creek Reservoir and tributaries, Box Elder County, daily maximum 2,100 mg/l;

Castle Creek from confluence with the Colorado River to Seventh Day Adventist Diversion: 1,800 mg/l;

Cottonwood Creek from the confluence with Huntington Creek to Highway U-57: 3,500 mg/l;

Ferron Creek from the confluence with San Rafael River to Highway U-10: 3,500 mg/l;

Huntington Creek and tributaries from the confluence with Cottonwood Creek to Highway U-10: 4,800 mg/l;

Ivie Creek and its tributaries from the confluence with Muddy Creek to the confluence with Quitchupah Creek: 3,800 mg/l provided that total sulfate not exceed 2,000 mg/l to protect the livestock watering agricultural existing use;

Ivie Creek and its tributaries from the confluence with Quitchupah Creek to Highway U-10: 2,600 mg/l;

Kanab Creek and tributaries from immediately below the confluence with Sink Valley Wash to the confluence of Simpson Hollow Wash: April through November, daily maximum 1,900 mg/l. December through March, daily maximum 1,700 mg/l. Assessments shall be based on TDS concentrations measured in Kanab Creek.;

Kanab Creek and tributaries from immediately above Simpson Hollow Wash to irrigation diversion at confluence with Reservoir Canyon: April through November, daily maximum 1,400 mg/l. Assessments shall be based on TDS concentrations measured in Kanab Creek.;

Lost Creek from the confluence with Sevier River to U.S. National Forest boundary: 4,600 mg/l;

Muddy Creek and tributaries from the confluence with Ivie Creek to Highway U-10: 2,600 mg/l;

Muddy Creek from confluence with Fremont River to confluence with Ivie Creek: 5,800 mg/l;

North Creek from the confluence with Virgin River to headwaters: 2,035 mg/l;

Onion Creek from the confluence with Colorado River to road crossing above Stinking Springs: 3000 mg/l;

Brine Creek-Petersen Creek, from the confluence with the Sevier River to Highway U-119 Crossing: 9,700 mg/l;

Price River and tributaries from confluence with Green River to confluence with Soldier Creek: 3,000 mg/l;

Price River and tributaries from the confluence with Soldier Creek to Carbon Canal Diversion: 1,700 mg/l;

Quitchupah Creek and tributaries from the confluence with Ivie Creek to Highway U-10: 3,800 mg/l provided that total sulfate not exceed 2,000 mg/l to protect the livestock watering agricultural existing use;

Rock Canyon Creek from the confluence with Cottonwood Creek to headwaters: 3,500 mg/l;

San Pitch River from below Gunnison Reservoir to the Sevier River: 2,400 mg/l;

San Rafael River from the confluence with the Green River to Buckhorn Crossing: 4,100 mg/l;

San Rafael River from the Buckhorn Crossing to the confluence with Huntington Creek and Cottonwood Creek: 3,500 mg/l;

Sevier River between Gunnison Bend Reservoir and DMAD Reservoir: 1,725 mg/l;

Sevier River from Gunnison Bend Reservoir to Crafts Lake: 3,370 mg/l;

Silver Creek and tributaries, Summit County, from confluence with Tollgate Creek to headwaters: maximum 1,900 mg/L.

South Fork Spring Creek from confluence with Pelican Pond Slough Stream to U.S. Highway 89 1,450 mg/l (Apr.-Sept.)

1,950 mg/l (Oct.-March)

Virgin River from the Utah/Arizona border to Pah Tempe Springs: 2,360 mg/l

(5) Investigations should be conducted to develop more information where these pollution indicator levels are exceeded. These indicators are superseded by numeric criteria in waters where promulgated.
(6) Total Phosphorus as P (mg/l) indicator for lakes and reservoirs shall be 0.025.
(7) Where the criteria are exceeded and there is a reasonable basis for concluding that the indicator bacteria E. coli are primarily from natural sources, such as in National

Wildlife Refuges and State Waterfowl Management Areas, the criteria may be considered attained provided the density attributable to non-wildlife sources is less than the criteria. Exceedences of E. coli from nonhuman nonpoint sources will generally be addressed through appropriate Federal, State, and local nonpoint source programs.

Measurement of E. coli using the "Quanti-Tray 2000" procedure is approved as a field analysis. Other EPA approved methods may also be used.

For water quality assessment purposes, up to 10% of representative samples may exceed the 668 per 100 ml criterion (for 1C and 2B waters) and 409 per 100 ml (for 2A waters). For small data sets, where exceedences of these criteria are observed, follow-up ambient monitoring should be conducted to better characterize water quality.

TABLE 2.14.2

NUMERIC CRITERIA FOR AQUATIC WILDLIFE(8)

Parameter

Aquatic Wildlife

3A

3B

3C

3D 5

PHYSICAL

Total Dissolved Gases

(1)

(1)

Minimum Dissolved Oxygen

(MG/L) (2)(2a)

30 Day Average

6.5

5.5

5.0

5.0

7 Day Average

9.5/5.0

6.0/4.

0

Minimum

8.0/4.0

5.0/3.0

3.0

3.0

Max. Temperature(C)(

3) 20

27

27

Max. Temperature Change (C)(3)

2

4

4

pH (Range)(2a)

6.5-9.0

6.5-9.0

6.5-9.0

6.5-9.0

Turbidity Increase (NTU)

10

10

15

15

METALS

(TOTAL RECOVERABLE, UG/L)

Aluminum (4) (5)

4 Day Average

87

87

87

87

1 Hour Average

750

750

750

750

METALS, METALLOIDS AND SUBSTANCES (4) (DISSOLVED, UG/L) (6)

750

750

750

750

Arsenic (Trivalent)

4 Day Average

150

150

150

150

1 Hour Average

340

340

340

340

Cadmium (7)

4 Day Average

0.72

0.72

0.72

0.72

1 Hour Average

1.8

1.8

1.8

1.8

Chromium (Hexavalent)

4 Day Average

11

11

11

11

1 Hour Average

16

16

16

16

Chromium (Trivalent) (7)

4 Day Average

74

74

74

74

1 Hour Average

570

570

570

570

Copper (7)

4 Day Average

9

9

9

9

1 Hour Average

13

13

13

13

Cyanide (Free)

4 Day Average

5.2

5.2

5.2

1 Hour Average

22

22

22

22

Iron (Maximum)

1000

1000

1000

1000

Lead (7)

4 Day Average

2.5

2.5

2.5

2.5

1 Hour Average

65

65

65

65

Mercury

4 Day Average

0.012

0.012

0.012

0.012

Nickel (7)

4 Day Average

52

52

52

52

1 Hour Average

468

468

468

468

Selenium

4 Day Average

4.6

4.6

4.6

4.6

1 Hour Average

18.4

18.4

18.4

18.4

Selenium (14) Gilbert Bay (Class 5A) Great Salt Lake Geometric Mean over Nesting Season (mg/kg dry wt)

12.5

Silver

1 Hour Average (7)

3.2

3.2

3.2

3.2

Tributyltin

4 Day Average

0.072

0.072

0.072

0.072

1 Hour Average

0.46

0.46

0.46

0.46

Zinc (7)

4 Day Average

120

120

120

120

1 Hour Average

120

120

120

120

INORGANICS (MG/L) (4)

Total Ammonia as N (9)

30 Day Average

(9a)

(9a)

(9a)

(9a)

1 Hour Average

(9b)

(9b)

(9b)

(9b)

Chlorine (Total Residual)

4 Day Average

0.011

0.011

0.011

0.011

1 Hour Average

0.019

0.019

0.019

0.019

Hydrogen Sulfide (Undissociated, Max. UG/L)

2.0

2.0

2.0

2.0

Phenol(Maximum) RADIOLOGICAL (MAXIMUM pCi/L)

0.01

0.01

0.01

0.01

ORGANICS (UG/L) (4) Acrolein

4 Day Average

3.0

3.0

3.0

3.0

1 Hour Average

3.0

3.0

3.0

3.0

Aldrin

1 Hour Average

1.5

1.5

1.5

1.5

Carbaryl

4 Day Average

2.1

2.1

2.1

2.1

1 Hour Average

2.1

2.1

2.1

2.1

Chlordane

4 Day Average

0.0043

0.0043

0.0043

0.0043

1 Hour Average

1.2

1.2

1.2

1.2

Chlorpyrifos

4 Day Average

0.041

0.041

0.041

0.041

1 Hour Average

0.083

0.083

0.083

0.083

4,4' -DDT

4 Day Average

0.0010

0.0010

0.0010

0.0010

1 Hour Average

0.55

0.55

0.55

0.55

Diazinon

4 Day Average

0.17

0.17

0.17

0.17

1 Hour Average

0.17

0.17

0.17

0.17

Dieldrin

4 Day Average

0.056

0.056

0.056

0.056

1 Hour Average

0.24

0.24

0.24

0.24

Alpha-Endosulfan

4 Day Average

0.056

0.056

0.056

0.056

1 Hour Average

0.11

0.11

0.11

0.11

beta-Endosulfan

4 Day Average

0.056

0.056

0.056

0.056

1 Day Average

0.11

0.11

0.11

0.11

Endrin

4 Day Average

0.036

0.036

0.036

0.036

1 Hour Average

0.086

0.086

0.086

0.086

Heptachlor

4 Day Average

0.0038

0.0038

0.0038

0.0038

1 Hour Average

0.26

0.26

0.26

0.26

Heptachlor epoxide

4 Day Average

0.0038

0.0038

0.0038

0.0038

1 Hour Average

0.26

0.26

0.26

0.26

Hexachlorocyclohexane (Lindane)

4 Day Average

0.08

0.08

0.08

0.08

1 Hour Average

1.0

1.0

1.0

1.0

Methoxychlor (Maximum)

0.03

0.03

0.03

0.03

Mirex (Maximum)

0.001

0.001

0.001

0.001

Nonylphenol

4 Day Average

6.6

6.6

6.6

6.6

1 Hour Average

28.0

28.0

28.0

28.0

Parathion

4 Day Average

0.013

0.013

0.013

0.013

1 Hour Average

0.066

0.066

0.066

0.066

PCBs

4 Day Average

0.014

0.014

0.014

0.014

Pentachlorophenol (11)

4 Day Average

15

15

15

15

1 Hour Average

19

19

19

19

Toxaphene

4 Day Average

0.0002

0.0002

0.0002

0.0002

1 Hour Average

0.73

0.73

0.73

0.73

POLLUTION INDICATORS (10)

Gross Alpha (pCi/L)

15

15

15

15

Gross Beta (pCi/L)

50

50

50

50

BOD (MG/L)

5

5

5

5

Nitrate as N (MG/L)

4

4

4

Total Phosphorus as P(MG/L) (12)

0.05

0.05

FOOTNOTES:

(1) Not to exceed 110% of saturation.
(2) These limits are not applicable to lower water levels in deep impoundments. First number in column is for when early life stages are present, second number is for when all other life stages present.
(2a) These criteria are not applicable to Great Salt Lake impounded wetlands. Surface water in these wetlands shall be protected from changes in pH and dissolved oxygen that create significant adverse impacts to the existing beneficial uses.

To ensure protection of uses, the Director shall develop reasonable protocols and guidelines that quantify the physical, chemical, and biological integrity of these waters. These protocols and guidelines will include input from local governments, the regulated community, and the general public. The Director will inform the Water Quality Board of any protocols or guidelines that are developed.

(3) Site Specific Standards for Temperature Kens Lake: From June 1st - September 20th, 27 degrees C.
(4) Where criteria are listed as 4-day average and 1-hour average concentrations, these concentrations should not be exceeded more often than once every three years on the average.
(5) The criterion for aluminum will be implemented as follows:

Until January 25, 2026, where the pH is equal to or greater than 7.0 and the hardness is equal to or greater than 50 ppm as CaC03 in the receiving water after mixing, the 87 ug/1 chronic criterion, expressed as total recoverable, will not apply, and aluminum will be regulated based on compliance with the 750 ug/1 acute aluminum criterion expressed as total recoverable.

On and after January 25, 2026, the one-hour and four-day aluminum criteria are incorporated by reference from Appendix K, Recommended Criteria for Various Water Chemistry Conditions, Final Ambient Water Quality Criteria for Aluminum 2018, EPA-822-R-18 -001.

(5a) For water chemistry conditions not specifically listed in Appendix K, the criteria are the more stringent of the criteria bracketed by the two most similar water chemistry conditions or may be interpolated using the same equations used to create the Appendix K tables.
(5b) Criteria based on ambient water chemistry conditions must protect the water body over the full range of water chemistry conditions, including during conditions when aluminum is most toxic.
(5c) For characterizing ambient waters, total recoverable analytical methods may be used or different scientifically appropriate analytical methods that measure the bioavailable fraction of aluminum that includes the measurement of amorphous aluminum hydroxide yet minimizes the measurement of mineralized forms of aluminum such as aluminum silicates associated with suspended sediment particles or clays.
(6) The dissolved metals method involves filtration of the sample in the field, acidification of the sample in the field, no digestion process in the laboratory, and analysis by EPA approved laboratory methods for the required detection levels.
(7) Hardness dependent criteria. 100 mg/l used. Conversion factors for ratio of total recoverable metals to dissolved metals must also be applied.

In waters with a hardness greater than 400 mg/l as CaC03, calculations will assume a hardness of 400 mg/l as CaC03. See Table 2.14.3 for complete equations for hardness and conversion factors.

(8) See also numeric criteria for organism only in Table 2.14.6.
(9) The following equations are used to calculate Ammonia criteria concentrations:
(9a) The thirty-day average concentration of total ammonia nitrogen (in mg/l as N) does not exceed, more than once every three years on the average, the chronic criterion calculated using the following equations.

Fish Early Life Stages are Present:

mg/l as N (Chronic) = ((0.0577/(1+107.688-pH)) + (2.487/(1+ 10pH-7.688))) * MIN (2.85, 1.45*100.028*(25-T))

Fish Early Life Stages are Absent:

mg/l as N (Chronic) = ((0.0577/(1+107.688-pH)) + (2.487/ (1+10pH-7.688))) * 1.45*100.028* (25-MAX(T,7)))

Mill Creek (Salt Lake County) from confluence with Jordan River to Interstate 15, Jordan River from Farmington Bay to confluence with Little Cottonwood Creek, Surplus Canal from 900 South Street to diversion from the Jordan River, State Canal, Fish Early Life Stages are Present:

mg/l as N (Chronic) = 0.9405 * ((0.0278/(1+107.688-pH)) + (1.1994/(1+10pH-7.688))) * MIN(6.920,(7.547*100.028*(20-T)))

Mill Creek (Salt Lake County) from confluence with Jordan River to Interstate 15, Jordan River from Farmington Bay to confluence with Little Cottonwood Creek, Surplus Canal from 900 South Street to diversion from the Jordan River, State Canal, Fish Early Life Stages are Absent:

mg/L as N (chronic) = 0.9405 * ((0.0278/(1+107.688-pH)) + (1.1994/(1+10pH-7.688))) * (7.547*100.028*(20-MAX (T,7)))

(9b) The one-hour average concentration of total ammonia nitrogen (in mg/l as N) does not exceed, more than once every three years on the average the acute criterion calculated using the following equations.

Class 3A:

mg/l as N (Acute) = (0.275/(1+107.204-pH)) + (39.0/1+10pH-7.204))

Class 3B, 3C, 3D:

mg/l as N (Acute) = 0.411/(1+107.204-pH)) + (58.4/(1+10pH-7.204))

Mill Creek (Salt Lake County) from confluence with Jordan River to Interstate 15, Jordan River from Farmington Bay to confluence with Little Cottonwood Creek, Surplus Canal from 900 South Street to diversion from the Jordan River, State Canal:

mg/l as N (Acute) = 0.7249 * ((0.0114/(1+107.204-pH))+(1.6181/ (1+10pH-7.204))) * MIN(51.93, (62.15*100.036*(20-T)))

In addition, the highest four-day average within the 30-day period should not exceed 2.5 times the chronic criterion. The "Fish Early Life Stages are Present" 30-day average total ammonia criterion will be applied by default unless it is determined by the Director, on a site-specific basis, that it is appropriate to apply the "Fish Early Life Stages are Absent" 30-day average criterion for all or some portion of the year. At a minimum, the "Fish Early Life Stages are Present" criterion will apply from the beginning of spawning through the end of the early life stages. Early life stages include the pre-hatch embryonic stage, the post-hatch free embryo or yolk-sac fry stage, and the larval stage for the species of fish expected to occur at the site. The Director will consult with the Division of Wildlife Resources in making such determinations. The Division will maintain information regarding the waterbodies and time periods where application of the "Early Life Stages are Absent" criterion is determined to be appropriate.

(10) Investigation should be conducted to develop more information where these levels are exceeded.
(11) pH dependent criteria. pH 7.8 used in table. See Table 2.14.4 for equation.
(12) Total Phosphorus as P (mg/l) as a pollution indicator for lakes and reservoirs shall be 0.025. These indicators are superseded by numeric criteria in waters where promulgated.
(13) Reserved
(14) The selenium water quality standard of 12.5 (mg/kg dry weight) for Gilbert Bay is a tissue based standard using the complete egg or embryo of aquatic dependent birds using Gilbert Bay based upon a minimum of five samples over the nesting season. Assessment procedures are incorporated as a part of this standard as follows:

Egg Concentration Triggers: DWQ Responses

Below 5.0 mg/kg: Routine monitoring with sufficient intensity to determine if selenium concentrations within the Great Salt Lake ecosystem are increasing.

5.0 mg/kg: Increased monitoring to address data gaps, loadings, and areas of uncertainty identified from initial Great Salt Lake selenium studies.

6.4 mg/kg: Initiation of a Level II Antidegradation review by the State for all discharge permit renewals or new discharge permits to Great Salt Lake. The Level II Antidegradation review may include an analysis of loading reductions.

9.8 mg/kg: Initiation of preliminary TMDL studies to evaluate selenium loading sources.

12.5 mg/kg and above: Declare impairment. Formalize and implement TMDL.

Antidegradation

Level II Review procedures associated with this standard are referenced at R317-2-3.5.C.

TABLE

1-HOUR AVERAGE (ACUTE) CONCENTRATION OF

TOTAL AMMONIA AS N (MG/L)

pH

Class 3A

Class 3B, 3C, 3D

6.5

32.6

48.8

6.6

31.3

46.8

6.7

29.8

44.6

6.8

28.1

42.0

6.9

26.2

39.1

7.0

24.1

36.1

7.1

22.0

32.8

7.2

19.7

29.5

7.3

17.5

26.2

7.4

15.4

23.0

7.5

13.3

19.9

7.6

11.4

17.0

7.7

9.65

14.4

7.8

8.11

12.1

7.9

6.77

10.1

8.0

5.62

8.40

8.1

4.64

6.95

8.2

3.83

5.72

8.3

3.15

4.71

8.4

2.59

3.88

8.5

2.14

3.20

8.6

1.77

2.65

8.7

1.47

2.20

8.8

1.23

1.84

8.9

1.04

1.56

9.0

0.89

1.32

TABLE

30-DAY AVERAGE (CHRONIC) CONCENTRATION OF

TOTAL AMMONIA AS N (MG/l)

Fish Early Life Stages Present Temperature, C

pH

0

14

16

18

20

22

24

26

28

30

6.5

6.67

6.67

6.06

5.33

4.68

4.12

3.62

3.18

2.80

2.46

6.6

6.57

6.57

5.97

5.25

4.61

4.05

3.56

3.13

2.75

2.42

6.7

6.44

6.44

5.86

5.15

4.52

3.98

3.50

3.07

2.70

2.37

6.8

6.29

6.29

5.72

5.03

4.42

3.89

3.42

3.00

2.64

2.32

6.9

6.12

6.12

5.56

4.89

4.30

3.78

3.32

2.92

2.57

2.25

7.0

5.91

5.91

5.37

4.72

4.15

3.65

3.21

2.82

2.48

2.18

7.1

5.67

5.67

5.15

4.53

3.98

3.50

3.08

2.70

2.38

2.09

7.2

5.39

5.39

4.90

4.31

3.78

3.33

2.92

2.57

2.26

1.99

7.3

5.08

5.08

4.61

4.06

3.57

3.13

2.76

2.42

2.13

1.87

7.4

4.73

4.73

4.30

3.78

3.32

2.92

2.57

2.26

1.98

1.74

7.5

4.36

4.36

3.97

3.49

3.06

2.69

2.37

2.08

1.83

1.61

7.6

3.98

3.98

3.61

3.18

2.79

2.45

2.16

1.90

1.67

1.47

7.7

3.58

3.58

3.25

2.86

2.51

2.21

1.94

1.71

1.50

1.32

7.8

3.18

3.18

2.89

2.54

2.23

1.96

1.73

1.52

1.33

1.17

7.9

2.80

2.80

2.54

2.24

1.96

1.73

1.52

1.33

1.17

1.03

8.0

2.43

2.43

2.21

1.94

1.71

1.50

1.32

1.16

1.02

0.90

8.1

2.10

2.10

1.91

1.68

1.47

1.29

1.14

1.00

0.88

0.77

8.2

1.79

1.79

1.63

1.43

1.26

1.11

0.97

0.86

0.75

0.66

8.3

1.52

1.52

1.39

1.22

1.07

0.94

0.83

0.73

0.64

0.56

8.4

1.29

1.29

1.17

1.03

0.91

0.80

0.70

0.62

0.54

0.48

8.5

1.09

1.09

0.99

0.87

0.76

0.67

0.59

0.52

0.46

0.40

8.6

0.92

0.92

0.84

0.73

0.65

0.57

0.50

0.44

0.39

0.34

8.7

0.78

0.78

0.71

0.62

0.55

0.48

0.42

0.37

0.33

0.29

8.8

0.66

0.66

0.60

0.53

0.46

0.41

0.36

0.32

0.28

0.24

8.9

0.56

0.56

0.51

0.45

0.40

0.35

0.31

0.27

0.24

0.21

9.0

0.49

0.49

0.44

0.39

0.34

0.30

0.26

0.23

0.20

0.18

TABLE

30-DAY AVERAGE (CHRONIC) CONCENTRATION OF

TOTAL AMMONIA AS N (MG/l)

Fish Early Life Stages Absent Temperature, C

pH

0-7

8

9

10

11

12

13

14

16

6.5

10.8

10.1

9.51

8.92

8.36

7.84

7.36

6.89

6.06

6.6

10.7

9.99

9.37

8.79

8.24

7.72

7.24

6.79

5.97

6.7

10.5

9.81

9.20

8.62

8.08

7.58

7.11

6.66

5.86

6.8

10.2

9.58

8.98

8.42

7.90

7.40

6.94

6.51

5.72

6.9

9.93

9.31

8.73

8.19

7.68

7.20

6.75

6.33

5.56

7.0

9.60

9.00

8.43

7.91

7.41

6.95

6.52

6.11

5.37

7.1

9.20

8.63

8.09

7.58

7.11

6.67

6.25

5.86

5.15

7.2

8.75

8.20

7.69

7.21

6.76

6.34

5.94

5.57

4.90

7.3

8.24

7.73

7.25

6.79

6.37

5.97

5.60

5.25

4.61

7.4

7.69

7.21

6.76

6.33

5.94

5.57

5.22

4.89

4.30

7.5

7.09

6.64

6.23

5.84

5.48

5.13

4.81

4.51

3.97

7.6

6.46

6.05

5.67

5.32

4.99

4.68

4.38

4.11

3.61

7.7

5.81

5.45

5.11

4.79

4.49

4.21

3.95

3.70

3.25

7.8

5.17

4.84

4.54

4.26

3.99

3.74

3.51

3.29

2.89

7.9

4.54

4.26

3.99

3.74

3.51

3.29

3.09

2.89

2.54

8.0

3.95

3.70

3.47

3.26

3.05

2.86

2.68

2.52

2.21

8.1

3.41

3.19

2.99

2.81

2.63

2.47

2.31

2.17

1.91

8.2

2.91

2.73

2.56

2.40

2.25

2.11

1.98

1.85

1.63

8.3

2.47

2.32

2.18

2.04

1.91

1.79

1.68

1.58

1.39

8.4

2.09

1.96

1.84

1.73

1.62

1.52

1.42

1.33

1.17

8.5

1.77

1.66

1.55

1.46

1.37

1.28

1.20

1.13

0.990

8.6

1.49

1.40

1.31

1.23

1.15

1.08

1.01

0.951

0.836

8.7

1.26

1.18

1.11

1.04

0.976

0.915

0.858

0.805

0.707

8.8

1.07

1.01

0.944

0.885

0.829

0.778

0.729

0.684

0.601

8.9

0.917

0.860

0.806

0.758

0.709

0.664

0.623

0.584

0.513

9.0

0.790

0.740

0.694

0.651

0.610

0.572

0.536

0.503

0.442

pH

18

20

22

24

26

28

30

6.5

5.33

4.68

4.12

3.62

3.18

2.80

2.46

6.6

5.25

4.61

4.05

3.56

3.13

2.75

2.42

6.7

5.15

4.52

3.98

3.50

3.07

2.70

2.37

6.8

5.03

4.42

3.89

3.42

3.00

2.64

2.32

6.9

4.89

4.30

3.78

3.32

2.92

2.57

2.25

7.0

4.72

4.15

3.65

3.21

2.82

2.48

2.18

7.1

4.53

3.98

3.50

3.08

2.70

2.38

2.09

7.2

4.41

3.78

3.33

2.92

2.57

2.26

1.99

7.3

4.06

3.57

3.13

2.76

2.42

2.13

1.87

7.4

3.78

3.32

2.92

2.57

2.26

1.98

1.74

7.5

3.49

3.06

2.69

2.37

2.08

1.83

1.61

7.6

3.18

2.79

2.45

2.16

1.90

1.67

1.47

7.7

2.86

2.51

2.21

1.94

1.71

1.50

1.32

7.8

2.54

2.23

1.96

1.73

1.52

1.33

1.17

7.9

2.24

1.96

1.73

1.52

1.33

1.17

1.03

8.0

1.94

1.71

1.50

1.32

1.16

1.02

0.897

8.1

1.68

1.47

1.29

1.14

1.00

0.879

0.733

8.2

1.43

1.26

1.11

1.073

0.855

0.752

0.661

8.3

1.22

1.07

0.941

0.827

0.727

0.639

0.562

8.4

1.03

0.906

0.796

0.700

0.615

0.541

0.475

8.5

0.870

0.765

0.672

0.591

0.520

0.457

0.401

8.6

0.735

0.646

0.568

0.499

0.439

0.396

0.339

8.7

0.622

0.547

0.480

0.422

0.371

0.326

0.287

8.8

0.528

0.464

0.408

0.359

0.315

0.277

0.244

8.9

0.451

0.397

0.349

0.306

0.269

0.237

0.208

9.0

0.389

0.342

0.300

0.264

0.232

0.204

0.179

TABLE 2.14.3a

EQUATIONS TO CONVERT TOTAL RECOVERABLE METALS STANDARD WITH HARDNESS (1) DEPENDENCE TO DISSOLVED METALS STANDARD BY APPLICATION OF A CONVERSION FACTOR (CF).

Parameter

4-Day Average (Chronic)

Concentration (UG/L)

CADMIUM

CF * e(0.7977*ln(hardness)-3.909)

CF = 1.101672 - ln(hardness) (0.041838)

CHROMIUM III

CF * e (0.8190(ln(hardness)) + 0.6848

CF = 0.860

COPPER

CF * e(0.8545(ln(hardness)) -1.702)

CF = 0.960

LEAD

CF * e(1.273(ln(hardness))-4.705)

CF = 1.46203 - ln(hardness)(0.145712)

NICKEL

CF * e(0.8460(ln(hardness))+0.0584)

CF = 0.997

SILVER

N/A

ZINC

Cf * e(0.8473(ln(hardness))+0.884)

CF = 0.986

TABLE 2.14.3b

EQUATIONS TO CONVERT TOTAL RECOVERABLE METALS STANDARD WITH HARDNESS (1) DEPENDENCE TO DISSOLVED METALS STANDARD BY APPLICATION OF A CONVERSION FACTOR (CF).

Parameter

1-Hour Average (Acute)

Concentration (UG/L)

CADMIUM

CF * e (0.9789*ln(hardness)-3.866)

CF = 1.136672 - ln(hardness)(0.041838)

CHROMIUM (III)

CF * e(0.8190(ln(hardness)) +3.7256)

CF = 0.316

COPPER

CF * e(0.9422(ln(hardness))- 1.700)

CF = 0.960

LEAD

CF * e(1.273(ln(hardness))-1.460)

CF = 1.46203 - ln(hardness)(0.145712)

NICKEL

CF * e(0.8460(ln(hardness)) +2.255)

CF= 0.998

SILVER

CF * e(1.72(ln(hardness))- 6.59)

CF = 0.85

ZINC

CF * e(0.8473(ln(hardness)) +0.884)

CF = 0.978

FOOTNOTE:

(1) Hardness as mg/l CaCO3.

TABLE 2.14.4

EQUATIONS FOR PENTACHLOROPHENOL

(pH DEPENDENT)

4-Day Average (Chronic)

Concentration (UG/L)

1-Hour Average (Acute)

Concentration (UG/L)

e(1.005(pH))-5.134

e(1.005(pH))-4.869

TABLE 2.14.5

SITE SPECIFIC CRITERIA FOR DISSOLVED OXYGEN FOR JORDAN RIVER FROM FARMINGTON BAY TO CONFLUENCE WITH LITTLE COTTONWOOD CREEK, SURPLUS CANAL, AND STATE CANAL

DISSOLVED OXYGEN:

May-July

7-day average

5.5 mg/l

30-day average

5.5 mg/l

Instantaneous minimum

4.5 mg/l

August-April

30-day average

5.5 mg/l

Instantaneous minimum

4.0 mg/l

TABLE 2.14.6

LIST OF HUMAN HEALTH CRITERIA (CONSUMPTION)

Chemical Parameter and CAS #

Water and Organism

(ug/L)

Organism Only

(ug/L)

Class 1C

Class 3A,3B,3C,3D

Antimony 7440-36-0

5.6

640

Arsenic 7440-38-2

A

A

Beryllium 7440-41-7

C

C

Chromium III 16065-83-1

C

C

Chromium VI 18540-29-9

C

C

Copper 7440-50-8

1,300

Mercury 7439-97-6

A

A

Nickel 7440-02-0

610

4,600

Selenium 7782-49-2

170

4,200

Thallium 7440-28-0

0.24

0.47

Zinc 7440-66-6

7,400

26,000

Free Cyanide 57-12-5

4

400

Asbestos 1332-21-4

7 million Fibers/L

2,3,7,8-TCDD Dioxin 1746-01-6

5.0 E -9 B

5.1 E-9 B

Acrolein 107-02-8

3

400

Acrylonitrile 107-13-1

0.061

7.0

Benzene 71-43-2

2.1 B

51 B

Bromoform 75-25-2

7.0 B

120 B

Carbon Tetrachloride 56-23-5

0.4 B

5 B

Chlorobenzene 108-90-7

100 MCL

800

Chlorodibromomethane 124-48-1

0.80 B

21 B

Chloroform 67-66-3

60 B

2,000 B

Dichlorobromomethane 75-27-4

0.95 B

27 B

1,2-Dichloroethane 107-06-2

9.9 B

2,000 B

1,1-Dichloroethylene 75-35-4

300 MCL

20,000

1,2-Dichloropropane 78-87-5

0.90 B

31 B

1,3-Dichloropropene 542-75-6

0.27

12

Ethylbenzene 100-41-4

68

130

Methyl Bromide 74-83-9

100

10,000

Methylene Chloride 75-09-2

20 B

1,000 B

1,1,2,2-Tetrachloroethane 79-34-5

0.2 B

3 B

Tetrachloroethylene 127-18-4

10 B

29 B

Toluene 108-88-3

57

520

1,2 -Trans-Dichloroethylene 156-60-5

100 MCL

4,000

1,1,1-Trichloroethane 71-55-6

10,000 MCL

200,000

1,1,2-Trichloroethane 79-00-5

0.55 B

8.9 B

Trichloroethylene 79-01-6

0.6 B

7 B

Vinyl Chloride 75-01-4

0.022

1.6

2-Chlorophenol 95-57-8

30

800

2,4-Dichlorophenol 120-83-2

10

60

2,4-Dimethylphenol 105-67-9

100

3,000

2-Methyl-4,6-Dinitrophenol 534-52-1

2

30

2,4-Dinitrophenol 51-28-5

10

300

3-Methyl-4 -Chlorophenol 59-50-7

500

2,000

Pentachlorophenol 87-86-5

0.03 B

0.04 B

Phenol 108-95-2

4,000

300,000

2,4,5-Trichlorophenol 95-95-4

300

600

2,4,6-Trichlorophenol 88-06-2

1.5 B

2.8 B

Acenaphthene 83-32-9

70

90

Anthracene 120-12-7

300

400

Benzidine 92-87-5

0.00014 B

0.011 B

BenzoaAnthracene 56-55-3

0.0012 B

0.0013 B

BenzoaPyrene 50-32-8

0.00012 B

0.00013 B

BenzobFluoranthene 205-99-2

0.0012 B

0.0013 B

BenzokFluoranthene 207-08-9

0.012 B

0.013 B

Bis2-Chloro1methylether 542-88-1

0.00015

0.017

Bis2-Chloro1methylethylether 108-60-1

200 B

4000

Bis2-ChloroethylEther 111-44-4

0.030 B

2.2 B

Bis2-Chloroisopropy1Ether 39638-32-9

1,400

65,000

Bis2-EthylhexylPhthalate 117-81-7

0.32 B

0.37 B

Butylbenzyl Phthalate 85-68-7

0.10

0.10

2-Chloronaphthalene 91-58-7

800

1,000

Chrysene 218-01-9

0.12 B

0.13 B

Dibenzoa,hAnthracene 53-70-3

0.00012 B

0.00013 B

1,2-Dichlorobenzene 95-50-1

1,000

3,000

1,3-Dichlorobenzene 541-73-1

7

10

1,4-Dichlorobenzene 106-46-7

300

900

3,3-Dichlorobenzidine 91-94-1

0.049 B

0.15 B

Diethyl Phthalate 84-66-2

600

600

Dimethyl Phthalate 131-11-3

2,000

2,000

Di-n-Butyl Phthalate 84-74-2

20

30

2,4-Dinitrotoluene 121-14-2

0.049 B

1.7 B

Dinitrophenols 25550-58-7

10

1,000

1,2-Diphenylhydrazine 122-66-7

0.03 B

0.2 B

Fluoranthene 206-44-0

20

20

Fluorene 86-73-7

50

70

Hexachlorobenzene 118-74-1

0.000079 B

0.000079 B

Hexachlorobutadiene 87-68-3

0.01 B

0.01 B

Hexachloroethane 67-72-1

0.1 B

0.1 B

Hexachlorocyclopentadiene 77-47-4

4

4

Ideno 1,2,3-cdPyrene 193-39-5

0.0012 B

0.0013 B

Isophorone 78-59-1

34 B

1,800 B

Nitrobenzene 98-95-3

10

600

N-Nitrosodiethylamine 55-18-5

0.0008 B

1.24 B

N-Nitrosodimethylamine 62-75-9

0.00069 B

3.0 B

N-Nitrosodi-n-Propylamine 621-64-7

0.0050 B

0.51 B

N-Nitrosodiphenylamine 86-30-6

3.3 B

6.0 B

N-Nitrosopyrrolidine 930-55-2

0.016 B

34 B

Pentachlorobenzene 608-93-5

0.1

0.1

Pyrene 129-00-0

20

30

1,2,4-Trichlorobenzene 120-82-1

0.071 MCL

0.076

Aldrin 309-00-2

0.00000077 B

0.00000077 B

alpha-BHC 319-84-6

0.00036 B

0.00039 B

beta-BHC 319-85-7

0.0080 B

0.014 B

gamma-BHC (Lindane) 58-89-9

4.2 MCL

4.4

Hexachlorocyclohexane (HCH) Technical 608-73-1

0.0066

0.010

Chlordane 57-74-9

0.00031 B

0.00032 B

4,4-DDT 50-29-3

0.000030 B

0.000030 B

4,4-DDE 72-55-9

0.000018 B

0.000018 B

4,4-DDD 72-54-8

0.00012 B

0.00012 B

Dieldrin 60-57-1

0.0000012 B

0.0000012 B

alpha-Endosulfan 959-98-8

20

30

beta-Endosulfan 33213-65-9

20

40

Endosulfan Sulfate 1031-07-8

20

40

Endrin 72-20-8

0.03

0.03

Endrin Aldehyde 7421-93-4

1

1

Heptachlor 76-44-8

0.0000059 B

0.0000059 B

Heptachlor Epoxide 1024-57-3

0.000032 B

0.000032 B

Methoxychlor 72-43-5

0.02

0.02

Polychlorinated Biphenyls (PCBs) 1336-36-3

0.000064 B,D

0.000064 B,D

Toxaphene 8001-35-2

0.00070 B

0.00071 B

FOOTNOTES:

A. See Table 2.14.2
B. Based on carcinogenicity of 10-6 risk.
C. EPA has not calculated a human criterion for this contaminant. However, permit authorities should address this contaminant in NPDES permit actions using the State's existing narrative criteria for toxics
D. This standard applies to total PCBs.

TABLE 2.14.7

NUTRIENT CRITERIA FOR CLASSES 2A and 2B (1)

Nutrient Parameters

Criteria

Periphyton

125 mg/m2 chlorophyll-a or 49 g/m2 ash free dry mass

FOOTNOTES:

(1) Applicable to all Category 1 and Category 2 streams with the following exceptions: Quitchupah Creek through Convulsion Canyon from U. S. Forest Service boundary upstream to East Spring Canyon headwaters; North Fork of Quitchupah Creek from the U. S. Forest Service boundary upstream to its confluence with South Fork; Huntington Creek from U. S. Forest Service boundary to confluence with Crandall Creek and Crandall Creek to headwaters.

TABLE 2.14.8

NUTRIENT CRITERIA FOR CLASSES 3A, 3B, 3C, and 3D(1)

Nutrient Parameters

Criteria(2)

Total Phosphorus

0.035 mg/L)(3), and

Total Nitrogen

0.40 mg/L)(3), or

Total Phosphorus

0.080 mg/L(3), and

Total Nitrogen

0.80 mg/L(3), and

Filamentous Algae

33% cover(4), or

Gross Primary Production

6 g O2/m2-day(5), or

Ecosystem Respiration

5 g O2/m2-day(5)

FOOTNOTES:

(1) Applicable to all Category 1 and Category 2 streams with the following exceptions: Quitchupah Creek through Convulsion Canyon from U. S. Forest Service boundary upstream to East Spring Canyon headwaters; North Fork of Quitchupah Creek from the U. S. Forest Service boundary upstream to its confluence with South Fork; Huntington Creek from U. S. Forest Service boundary to confluence with Crandall Creek and Crandall Creek to headwaters.
(2) For water quality assessments, Table 8, Decision Matrix That Will Be Used to Assess Support of Headwater Aquatic Life Uses for Nutrient-related Water Quality Problems, "Proposed Nutrient Criteria: Utah Headwater Streams["]," Utah Division of Water Quality, March, 2019 is incorporated by reference.
(3) Not to be exceeded seasonal average for the index period of algal growth through senescence.
(4) Not to be exceeded average based on at least three transects perpendicular to stream flow and spatially dispersed along a reach of at least 50 meters
(5) Not to be exceeded during the index period of algal growth through senescence.

Utah Admin. Code R317-2-14

Amended by Utah State Bulletin Number 2015-24, effective 11/30/2015
Amended by Utah State Bulletin Number 2018-14, effective 7/2/2018
Amended by Utah State Bulletin Number 2019-14, effective 7/1/2019
Amended by Utah State Bulletin Number 2020-24, effective 12/3/2020
Amended by Utah State Bulletin Number 2023-03, effective 1/25/2023