Water Quality Regulations (250-RICR-150-05-1)


250-RICR-150-05-1 ACTIVE RULE

My Page Title

1.1Purpose

1.2Legal Authority

1.3Incorporated Materials

1.4Definitions

1.5 Liberal Application

1.6Severability

1.7Application of these Regulations

1.8Surface Water Quality Standards

1.9Water Use Classification

1.10Water Quality Criteria

CRITERION

CLASS AA1

CLASS A

CLASS B, B1, B{a}, B1{a}

CLASS C

Dissolved Oxygen

Cold Water Fish Habitat - Dissolved oxygen content of not less than 75% saturation, based on a daily average, and an instantaneous minimum dissolved oxygen concentration of at least 5 mg/l, except as naturally occurs. For the period from October 1st to May 14th, where in areas identified by the RI Division of Fish and Wildlife as cold water fish spawning areas the following criteria apply: For species whose early life stages are not directly exposed to the water column (ie, early life stages are intergravel), the 7 day mean water column dissolved oxygen concentration shall not be less than 9.5 mg/l and the instantaneous minimum dissolved oxygen concentration shall not be less than 8 mg/l. For species that have early life stages exposed directly to the water column, the 7 day mean water column dissolved oxygen concentration shall not be less than 6.5 mg/l and the instantaneous minimum dissolved oxygen concentration shall not be less than 5.0 mg/l. (See § 1.25 of this Part for coldwater designated waters)

Warm Water Fish Habitat - Dissolved oxygen content of not less than 60% saturation, based on a daily average, and an instantaneous minimum dissolved oxygen concentration of at least 5.0 mg/l, except as naturally occurs. The 7 day mean water column dissolved oxygen concentration shall not be less than 6 mg/l. (See § 1.25 of this Part for warmwater designated waters)

Sludge deposits, solid refuse, floating solids, oil, grease, scum

None allowable.

None in such amoutns that would impair any usages specifically assigned to this class.

Color and turbidity

None in such concentrations that would impair any usages specifically assigned to this class. Turbidity not to exceed 5 NTU over background.

None in such concentrations that would impair any usages specifically assigned to this class. Turbidity not to exceed 10 NTU over natural background.

Fecal Coliform Bacteria (MPN/100ml)

Drinking Water Supply Criteria: - applied at the terminal reservoir of the system – Not to exceed a geometric mean value of 20 MPN/100 ml and not more than 10% of the samples shall exceed a value of 200.

None in such concentrations that would impair any usages specifically assigned to this class.

Primary Contact Recreational/Swimming Criteria – Not to exceed a geometric mean value of 200 MPN/100 ml and not more than 10% of the total samples taken shall exceed 400 MPN/100 ml, applied only when adequate enterocci data are not available

Enterococci

Primary Contact Recreational/Swimming Criteria

Non-Designated Bathing Beach Waters Geometric Mean Density: 54 colonies/100 ml

Designated Bathing Beach Waters Geometric Mean Density: 33 colonies/100 ml

Single Sample Maximum*: 61 colonies/100 ml

* Criteria for determining beach swimming advisories at designated beaches as evaluated by Health.

None in such concentrations that would impair any usages specifically assigned to this class.

Taste and odor

None other than of natural origin and none associated with nuisance algal species.

None in such concentrations that would impair any usages specifically assigned to this class nor cause taste or odor in edible portions of fish.

pH (Standard Units)

6.5 – 9.0 or as naturally occurs.

Temperature/Temperature increase

No activity shall raise the temperature of the receiving waters above the recommended limit on the most sensitive receiving water use nor cause the growth of undesirable or nuisance species of biota. In no cases shall an activity cause the temperature to exceed 83 degrees F. Heated discharges into designated coldwater habitats (See § 1.25 of this Part for coldwater designated waters) shall not raise the temperature above 68 degrees F outside an established thermal mixing zone. In no case shall the temperature of the receiving water be raised more than 4 degrees F.

Chemical constituents

None in concentrations or combinations that could be harmful to humans or fish and wildlife for the most sensitive and governing water class use, or unfavorably alter the biota, or which would make the waters unsafe or unsuitable for fish and wildlife or their propagation, impair the palatability of same, or impair waters for any other existing or designated use. None in such concentrations that would exceed the Water Quality Criteria and Guidelines as found in § 1.26 of this Part.

The ambient concentration of a pollutant in a water body shall not exceed the Ambient Water Quality Criteria and Guidelines, (§ 1.26 of this Part) for the protection of aquatic organisms from acute or chronic effects, unless the criteria or guidelines are modified by the Director based on results of bioassay tests conducted in accordance with the terms and conditions provided in § 1.29 of this Part.

Nutrients

Average Total Phosphorus shall not exceed 0.025 mg/l in any lake, pond, kettlehole or reservoir, and average Total P in tributaries at the point where they enter such bodies of water shall not cause exceedance of this phosphorus criteria, except as naturally occurs, unless the Director determines, on a site-specific basis, that a different value for phosphorus is necessary to prevent cultural eutrophication.

None in such concentration that would impair any usages specifically assigned to said Class, or cause undesirable or nuisance aquatic species associated with cultural eutrophication, nor cause exceedance of the criterion above in a downstream lake, pond, or reservoir. New discharges of wastes containing phosphates will not be permitted into or immediately upstream of lakes or ponds. Phosphates shall be removed from existing discharges to the extent that such removal is or may become technically and reasonably feasible.

1 Class AA waters used for public drinking water supply may be subject to restricted recreational use by State and local authorities.

E. Class Specific Criteria-Saltwaters

1.The table below presents the class-specific criteria for saltwaters, classifications SA, SB, SB1, and SC and any partial use designation saltwaters.

CRITERION

CLASS SA, SA{b}

CLASS SB, SB1, SB{a}, SB1{a}

CLASS SC

Sludge deposits, solid refuse, floating solids, oil, grease, scum

None allowable.

None in such amounts that would impair any usages specifically assigned to this class.

Color and turbidity

None in such concentrations that would impair any usages specifically assigned to this class. Turbidity not to exceed 5 NTU over background.

None in such concentrations that would impair any usages specifically assigned to this class. Turbidity not to exceed 10 NTU over background.

Fecal Coliform Bacteria

Shellfishing Criteria: - Not to exceed a geometric mean MPN or MF (mTEC) value of 14 per 100ml and not more than either 10% of the estimated 90th percentile of the samples shall exceed an MPN value of 49 per 100ml for a three-tube decimal dilution or 31 cfu per 100ml for MF (mTEC).

None in such concentrations that would impair any usages specifically assigned to this class.

Primary Contact Recreational/Swimming Criteria - Not to exceed a geometric mean value of 50 MPN/100 ml and not more than 10% of the total samples taken shall exceed 400 MPN/100 ml, applied only when adequate enterococci data are not available.

Enterococci

Primary Contact Recreational/Swimming Criteria

Geometric Mean Density: 35 colonies/100 ml

Single Sample Maximum*: 104 colonies/100 ml

* Criteria for determining beach swimming advisories at designated beaches as evaluated by the Rhode Island Department of Health.

None in such concentrations that would impair any usages specifically assigned to this class.

Taste and odor

None allowable except as naturally occurs.

None in such concentrations that would impair any usages specifically assigned to this class nor cause taste or odor in edible portions of fish or shellfish.

pH

6.5 - 8.5 but not more than 0.2 units outside of the normally occurring range.

Dissolved Oxygen

See § 1.10(F) of this Part

Chemical constituents

None in concentrations or combinations that could be harmful to humans or fish and wildlife for the most sensitive and governing water class use, or unfavorably alter the biota, or which would make the waters unsafe or unsuitable for fish and wildlife or their propagation, impair the palatability of same, or impair the waters for any other existing or designated use. None in such concentrations that would exceed the Water Quality Criteria and Guidelines as found in § 1.26 of this Part.

The ambient concentration of a pollutant in a water body shall not exceed the RI DEM Ambient Water Quality Criteria & Guidelines (§ 1.26 of this Part) for the protection of aquatic organisms from acute or chronic effects, unless the criteria or guideline is modified by the Director based on results of bioassay tests conducted in accordance with the terms and conditions provided in § 1.29 of this Part.

Nutrients

None in such concentration that would impair any usages specifically assigned to said Class, or cause undesirable or nuisance aquatic species associated with cultural eutrophication. Shall not exceed site-specific limits if deemed necessary by the Director to prevent or minimize accelerated or cultural eutrophication. Total phosphorus, nitrates and ammonia may be assigned site-specific permit limits based on reasonable Best Available Technologies. Where waters have low tidal flushing rates, applicable treatment to prevent or minimize accelerated or cultural eutrophication may be required for regulated nonpoint source activities.

Temperature/ Temperature Increase

Activities shall not increase the temperature except where the increase will not exceed the recommended limit on the most sensitive receiving water use and in no case shall an activity cause the temperature to exceed 83 degrees F nor raise the normal temperature more than 1.6 degrees F, 16 June through September and not more than 4 degrees F from October through 16 June. All measurements shall be made at the boundary of such mixing zones as is found to be reasonable by the Director.

F.Saltwater Dissolved Oxygen Criteria - The following information details the use of continuous dissolved oxygen data in estuarine waters.

1.For surface waters above a seasonal pycnocline, not less than an instantaneous value of 4.8 mg/l more than once every three years, except as naturally occurs.

2.For waters below the seasonal pycnocline, Aquatic Life Uses are considered to be protected if conditions do not fail to meet protective thresholds, as described below, more than once every three years. DO criteria presented here shall be protective of the most sensitive life stage – survival effects on larvae which affects larval recruitment – for both persistent and cyclic conditions. This criteria evaluates effects of exposure to low DO over time on larval recruitment. Because larval recruitment occurs over the whole season, the low DO exposure effects are cumulative. Exposures are evaluated on a daily basis to determine the total seasonal exposure. The criteria to protect larval survival is established to limit the number of exposure days over the range of low DO conditions such that the cumulative percentage of larvae affected shall not exceed a 5% reduction in larval recruitment over the season. If the Director determines that a smaller percent impairment on larval recruitment is necessary on a site specific basis, a criteria modification will be process in accordance with § 1.21(F) of this Part. Protection of larval survival will also afford adequate protection of juvenile and adult life stages. The critical recruitment season for evaluation of DO exposure is defined as May 1 through October 31. While recruitment may occur at other periods of the year, this timeframe reflects periods when hypoxia are most prevalent. Waters with a DO concentration above an instantaneous value of 4.8 mg/l shall be considered protective of Aquatic Life Uses. When instantaneous DO values fall below 4.8 mg/l, the waters shall not be:

a.Less than 2.9 mg/l for more than 24 consecutive hours during recruitment season; nor

b.Less than 1.4 mg/l for more than 1 hour more than twice during the recruitment season; nor

c.Shall they exceed the cumulative exposure presented in § 1.10(F)(3) of this Part.

d.The method for calculating cumulative low DO exposure throughout the recruitment season is as follows:

(1)For persistent low DO conditions (low DO conditions that vary little within a day, e.g., <0.5 mg/l), the limit represents allowable DO conditions below 4.8 mg/l provided the exposure duration (number of days observed) does not exceed the corresponding allowable number of days (as presented in § 1.10(F)(2)(d)(1)(AA) of this Part) that ensure adequate larval recruitment over the course of the season. The cumulative seasonal low DO effects are evaluated by totaling the fractions of the observed (or projected) exposure duration (in days) divided by the allowable number of days for each DO concentration. The sum of the decimal fractions shall not exceed 1.0. The minimum daily DO measurement is used to represent the daily DO value. The criteria for 24 hour DO concentration and allowable number of days as presented in § 1.10(F)(2)(d)(1)(AA) of this Part are calculated using the following equations:

(AA) Saltwater DO Criteria for Waters Below the Seasonal Pycnocline

24 Hour (Daily) DO Exposure Concentration (mg/L)

Daily Percent Larval Mortality (%)

Allowable Number of Days Without Exceeding a 5% Reduction in Seasonal Larval Recruitment

4.6

4.96

42

4.5

6.05

30

4.4

7.36

24

4.3

8.93

20

4.2

10.79

18

4.1

12.98

16

4

15.55

14

3.9

18.51

12

3.8

21.88

10

3.7

25.69

9

3.6

29.89

8

3.5

34.47

7

3.4

39.36

6

3.3

44.46

5

3.2

49.69

4

3.1

54.92

3

3

60.05

2

2.9

64.97

1

(2)For cyclic low DO conditions (DO conditions that fluctuate broadly within a day, e.g.>0.5 mg/l), the limit represents the allowable number of days as a given daily larval percent mortality that protects against great than 5% cumulative impairment of larval recruitment over a recruitment season. The maximum daily percent larval mortality is a function of DO minimum for any exposure interval/range (mg/l) and the duration of the interval (hours) and is determined using the Time-to-death (TTD) curves presented in § 1.10(F)(2)(d)(2)(AA) of this Part The maximum daily percent larval mortality from cyclic exposures is determined from the observed data point falling closest to a TTD curve of greatest effect (ie., highest percent mortality). The calculated maximum daily percent larval mortality shall not exceed the allowable number of days as presented in § 1.10(F)(2)(d)(1)(AA) and § 1.10(F)(2)(d)(2)(BB) of this Part. Cumulative cyclic low DO effects observed over the course of the season are evaluated by tallying the number of days at each percent mortality observed for the season. The observed number of days at each percent mortality are divided by the allowable number of days for each percent mortality. The sum of the decimal fraction shall not exceed 1.0.

(AA)Time To Death (TTD) Curves for 5-60% Mortality

(BB)Cyclic Translator for Waters Below the Seasonal Pycnocline

(3)For seasons with both cyclic and persistent cycles of low DO, all data will be treated as cyclic exposure patterns with the persistent data set at the 24 hour/1-day exposure duration. Daily percent mortalities will be determined from § 1.10(F)(2)(d)(2)(AA) and § 1.10(F)(2)(d)(1)(AA) of this Part will be used to determine the acceptable number of days the low DO pattern can occur over the course of the season.

3.For waters without a seasonal pycnocline, DO concentrations above 4.8 mg/l shall be considered protective of Aquatic Life Uses. When instantaneous DO values fall below 4.8 mg/l, the water shall not be:

a.Less than 3.0 mg/l for more than 24 consecutive hours during the recruitment season; nor

b.Less than 1.4 mg/l for more than 1 hour more than twice during the recruitment season; nor

c.Shall they exceed the cumulative DO exposure presented in § 1.10(F)(2)(d)(1)(AA) of this Part.

d.Cumulative low DO exposures in the 2.95 – 4.8 mg/l range shall be evaluated as described above in § 1.10(F)(2) of this Part but shall not exceed the information presented in § 1.10(F)(3)(e)(1)(AA) of this Part.

e.The method for calculating cumulative low DO exposure is as follows:

(1)For persistent low DO conditions in water without a seasonal pycnocline, the criteria for 24 hours DO concentration and allowable number of days as presented in § 1.10(F)(3)(e)(1)(AA) of this Part are calculated using the following equation:

   

(AA)Saltwater DO Criteria for Waters without a Seasonal Pycnocline

24 Hour (Daily) DO Exposure Concentration (mg/L)

Daily Percent Larval Mortality (%)

Allowable Number of Days Without Exceeding a 5% Reduction in Seasonal Larval Recruitment

4.6

4.96

16

4.5

6.05

14

4.4

7.36

12

4.3

8.93

11

4.2

10.79

10

4.1

12.98

8

4.0

15.55

7

3.9

18.51

6

3.8

21.88

5

3.7

25.69

4

3.6

29.89

3

3.5

34.47

2

3.4

39.36

1

(2)For cyclic low DO conditions in waters without a seasonal pycnocline, the daily percent mortalities for observed data are determined from § 1.10(F)(2)(d)(2)(AA) of this Part and shall not exceed the allowable number of days presented in § 1.10(F)(3)(e)(1)(AA) and § 1.10(F)(3)(e)(2)(AA) of this Part.

(AA)Cyclic Translator for Waters Without a Seasonal Pycnocline

(3)For seasons with both cyclic and persistent cycles of low DO, all data will be treated as cyclic exposure patterns with the persistent data set at the 24 hours/1-day exposure duration. Daily percent mortalities will be determined from § 1.10(F)(2)(d)(2)(AA) and § 1.10(F)(3)(e)(1)(AA) of this Part will be used to determine the acceptable number of days the low DO pattern can occur over the course of the season.

1.11Effect of Activities on Water Quality Standards

1.12Procedures for Determining Additional Requirements for Effluent Limitations, Treatment and Pretreatment

1.13Prohibited Discharges

1.14Strategic Plan Consistency

1.15Approvals

1.16Application for Approvals

1.17Procedures for Review of Applications for Orders of Approval and Water Quality Certifications

1.18Effect of Approval

1.19Modification, Expiration, Suspension or Revocation of Approval

1.20Antidegradation of Water Quality Standards

1.21Modification of Water Quality Standards

1.22Variances from Water Quality Standards

1.23Appeals

1.24Sampling

1.25Water Quality Classifications

1.26RIDEM Ambient Water Quality Criteria and Guidelines for Toxic Pollutants

J.Table of Acute and Chronic Aquatic Life Criteria and Minimum Database Guidelines for Freshwater and Saltwater and Human Health Criteria

1.Priority Pollutant: Toxic Metals and Cyanide

CHEMICAL NAME

CAS Number

AQUATIC LIFE CRITERIA (µg/l)

CARCINOGEN

HUMAN HEALTH CRITERIA (µg/l)2

FRESHWATER

SALTWATER

For Consumption of:

ACUTE

CHRONIC

ACUTE

CHRONIC

Water and Aquatic Organisms

Aquatic Organisms Only

Antimony

7440360

450*

10*

-

-

No

5.6

640

Arsenic5,6

7440382

340

150

69

36

Yes

0.18

1.4

Asbestos

1332214

-

-

-

-

Yes

7x106 fibers/l

Beryllium

7440417

7.5*

0.17*

-

-

Yes

-

-

Cadmium 5,6

7440439

@

@

40

8.8

No

-

-

Chromium III 5

1606583

@

@

-

-

No

-

-

Chromium VI 5,6

18540299

16

11

1100

50

No

-

-

Copper 5,6

7440508

@

@

4.8

3.1

No

1300

-

Copper (Site Specific) 7

7440508

20.41

14.45

-

-

No

1300

-

Cyanide

57125

22

5.2

1.0

1.0

No

140

140

Lead 5,6

7439921

@

@

210

8.1

No

-

-

Mercury 5,6

7439976

1.4

0.77

1.8

0.94

No

0.14

0.15

Nickel 5,6

7440020

@

@

74

8.2

No

610

4600

Selenium 6

7782492

20

5

290

71

No

170

4200

Silver 5,6

7440224

@

-

1.9

-

No

-

-

Thallium

7440280

46*

1.0*

-

-

No

0.24

0.47

Zinc 5,6

7440666

@

@

90

81

No

7400

26000

2.Priority Pollutant: Volatile Organic Compounds

CHEMICAL NAME

CAS Number

AQUATIC LIFE CRITERIA (µg/l)

CARCINOGEN?

HUMAN HEALTH CRITERIA (µg/l)2

For Consumption of:

FRESHWATER

SALTWATER

Water and Aquatic Organisms

Aquatic Organisms Only

ACUTE

CHRONIC

ACUTE

CHRONIC

Acrolein

107028

2.9*

0.06*

-

-

No

190

290

Acrylonitrile

107131

378*

8.4*

-

-

Yes

0.51

2.5

Benzene

71432

265*

5.9*

-

-

Yes

22

510

Bromoform

75252

1465*

33*

-

-

Yes

43

1400

Carbon Tetrachloride

56235

1365*

30*

-

-

Yes

2.3

16

Chlorobenzene

108907

795*

18*

-

-

No

130

1600

Chlorodibromomethane

124481

4.0

130

Chloroform

67663

1445*

32*

-

-

Yes

57

4700

Dichlorobromomethane

75274

-

-

-

-

Yes

5.5

170

1,2-Dichloroethane

107062

5900*

131*

-

-

Yes

3.8

370

1,1-Dichloroethylene

75354

580*

13*

-

-

Yes

330

7100

1,2-Dichloropropane

78875

2625*

58*

-

-

Yes

5.0

150

1,3-Dichloropropene

542756

-

-

-

-

No

0.34

21

Ethylbenzene

100414

1600*

36*

-

-

No

530

2100

Methyl bromide

74839

-

-

-

-

No

47

1500

Methyl chloride

74873

-

-

-

-

Yes

-

-

Methylene chloride

75092

9650*

214*

-

-

Yes

46

5900

1,1,2,2-tetrachloroethane

79345

466*

10*

-

-

Yes

1.7

40

Tetrachloroethylene

127184

240*

5.3*

-

-

Yes

6.9

33

Toluene

108883

635*

14*

-

-

No

1300

15 mg/l

1,2-trans-dichloroethylene

156605

-

-

-

-

No

140

10 mg/l

1,1,1-trichloroethane

71556

-

-

-

-

No

-

-

1,1,2-trichloroethane

79005

900*

20*

-

-

Yes

5.9

160

Trichloroethylene

79016

1950*

43*

-

-

Yes

25

300

Vinyl chloride

75014

-

-

-

-

Yes

0.025

2.4

3.Priority Pollutants: Acid Organic Compounds

CHEMICAL NAME

CAS Number

AQUATIC LIFE CRITERIA (µg/l)

CARCINOGEN?

HUMAN HEALTH CRITERIA (µg/l)2

For Consumption of:

FRESHWATER

SALTWATER

Water and Aquatic Organisms

Aquatic Organisms Only

ACUTE

CHRONIC

ACUTE

CHRONIC

2-chlorophenol

95578

129*

2.9*

-

-

No

81

150

2,4-dichlorophenol

120832

101*

2.2*

-

-

No

77

290

2,4-dimethylphenol

105679

106*

2.4*

-

-

No

380

850

2-methyl-4,6-dinitrophenol

534521

13

280

2,4-dinitrophenol

51285

31*

0.69*

-

-

No

69

5300

4-nitrophenol

88755

-

-

-

-

-

-

Pentachlorophenol

87865

@

@

13

7.9

Yes

2.7

30

Phenol

108952

251*

5.6*

-

-

No

21 mg/l

1700 mg/l

2,4,6-trichlorophenol

88062

16*

0.36*

-

-

Yes

14

24

4.Priority Pollutants: Base Neutral Compounds

CHEMICAL NAME

CAS Number

AQUATIC LIFE CRITERIA (µg/l)

CARCINOGEN?

HUMAN HEALTH CRITERIA (µg/l)2

For Consumption of:

FRESHWATER

SALTWATER

Water and Aquatic Organisms

Aquatic Organisms Only

ACUTE

CHRONIC

ACUTE

CHRONIC

Acenapthene

83329

85*

1.9*

-

-

No

670

990

Anthracene

120127

-

-

-

-

No

8300

40 mg/l

Benzidine

92875

-

-

-

-

Yes

0.86 ng/l

2.0 ng/l

Polycyclic Aromatic Hydrocarbons4

-

-

-

-

Yes

0.038

0.18

Bis(2-Chloroethyl)ether

111444

-

-

-

-

Yes

0.30

5.3

Bis(2-Chloroisopropyl)ether

108601

-

-

-

-

No

1400

65 mg/l

Bis(2-Ethylhexyl)phthalate

117817

555*

12*

-

-

Yes

12

22

Butyl Benzyl Phthalate

85687

85*

1.9*

No

1500

1900

2-Chloronaphthalene

91587

-

-

-

-

No

1000

1600

1,2-Dichlorobenzene

95501

79*

1.8*

-

-

No

420

1300

1,3-Dichlorobenzene

541731

390*

8.7*

-

-

No

320

960

1,4-Dichlorobenzene

106467

56*

1.2*

-

-

No

63

190

3,3’-Dichlorobenzidene

91941

-

-

-

-

Yes

0.21

0.28

Diethyl Phthalate

84662

2605*

58*

-

-

No

17 mg/l

44 mg/l

Dimethyl Phthalate

131113

1650*

37*

-

-

No

270 mg/l

1.1 g/l

Di-n-Butyl Phthalate

84742

-

-

-

-

No

2000

4500

2,4-Dinitrotoluene

121142

1550*

34*

-

-

Yes

1.1

34

1,2-Diphenylhydrazine

122667

14*

0.31*

-

-

Yes

0.36

2.0

Fluoranthene

206440

199*

4.4*

-

-

No

130

140

Fluorene

86737

-

-

-

-

No

1100

5300

Hexachlorobenzene

118741

-

-

-

-

Yes

2.8 ng/l

2.9 ng/l

Hexachlorobutadiene

87683

-

-

-

-

Yes

4.4

180

Hexachlorocyclopentadiene

77474

0.35*

0.008*

-

-

No

40

1100

Hexachloroethane

67721

49*

1.1*

-

-

Yes

14

33

Isophorone

78591

5850*

130*

-

-

Yes

350

9600

Napthalene

91203

115*

2.6*

-

-

-

-

Nitrobenzene

98953

1350*

30*

-

-

No

17

690

N-Nitrosodimethylamine

62759

-

-

-

-

Yes

6.9 ng/l

30

N-Nitrosodi-N-Propylamine

621647

-

-

-

-

Yes

0.05

5.1

N-Nitrosodiphenylamine

86306

293*

6.5*

-

-

Yes

33

60

Pyrene

129000

-

-

-

-

No

830

4000

1,2,4-Trichlorobenzene

120821

75*

1.7*

-

-

35

70

5.Priority Pollutants: Pesticides/PCBs

CHEMICAL NAME

CAS Number

AQUATIC LIFE CRITERIA (µg/l)

CARCINOGEN?

HUMAN HEALTH CRITERIA (µg/l)2

For Consumption of:

FRESHWATER

SALTWATER

Water and Aquatic Organisms

Aquatic Organisms Only

ACUTE

CHRONIC

ACUTE

CHRONIC

Aldrin

309002

3.0$

-

1.3$

-

Yes

0.49 ng/l

0.5 ng/l

alpha BHC

319846

-

-

-

-

Yes

26 ng/l

49 ng/l

beta BHC

319857

-

-

-

-

Yes

91 ng/l

170 ng/l

gamma BHC (Lindane)

58899

0.95$

0.16$

-

Yes

0.98

1.8

Chlordane

57749

2.4$

0.0043

0.09$

0.004

Yes

8.0 ng/l

8.1 ng/l

4,4-DDT

50293

1.1$

0.001

0.13$

0.001

Yes

2.2 ng/l

2.2 ng/l

4,4-DDE

72559

-

-

-

-

Yes

2.2 ng/l

2.2 ng/l

4,4-DDD

72548

-

-

-

-

Yes

3.1 ng/l

3.1 ng/l

Dieldrin

60571

0.24

0.056

0.71$

0.0019

Yes

0.52 ng/l

0.54 ng/l

Endosulfan alpha

959988

0.22$

0.056

0.034$

0.0087

No

62

89

Endosulfan, beta

33213659

0.22$

0.056

0.034$

0.0087

62

89

Endosulfan (sulfate)

1031078

-

-

-

-

No

62

89

Endrin

72208

0.086$

0.036

0.037$

0.0023

No

0.059

0.06

Endrin Aldehyde

7421934

-

-

-

-

No

0.29

0.30

Heptachlor

76448

0.52$

0.0038

0.053$

0.0036

Yes

0.79 ng/l

0.79 ng/l

Heptachlor Epoxide

1024573

0.52$

0.0038

0.053$

0.0036

Yes

0.39 ng/l

0.39 ng/l

Polychlorinated Biphenyls (PCBs)3

1336363

-

0.014

-

0.03

Yes

0.64 ng/l

0.64 ng/l

2,3,7,8-TCDD (Dioxin)

1746016

-

-

-

-

Yes

5 x 10-8

5.1 x 10-8

Toxaphene

8001352

0.73

0.0002

0.21

0.0002

Yes

2.8 ng/l

2.8 ng/l

Tributyltin

**

0.46

0.072

0.42

0.0074

No

-

-

6.Non Priority Pollutants: Other Substances

CHEMICAL NAME

CAS Number

AQUATIC LIFE CRITERIA (µg/l)

CARCINOGEN?

HUMAN HEALTH CRITERIA (µg/l)2

For Consumption of:

FRESHWATER

SALTWATER

Water and Aquatic Organisms

Aquatic Organisms Only

ACUTE

CHRONIC

ACUTE

CHRONIC

Aluminum

7429905

750^

87^

-

-

-

-

Ammonia

7664417

#

#

#

#

No

-

-

4-Bromophenyl Phenyl Ether

18*

0.4*

-

-

-

-

Chloride

16887006

860,000

230,000

Chlorine

7782505

19

11

13

7.5

4-Chloro-2-Methylphenol

15*

0.32*

-

-

-

-

1-Chloronaphthalene

80*

1.8*

-

-

-

-

4-Chlorophenol

106489

192*

4.3*

-

-

-

-

2,4-Dichloro-6-Methylphenol

22*

0.48*

-

-

-

-

1,1-Dichloropropane

1150*

26*

-

-

-

-

1,3-Dichloropropane

142289

303*

6.7*

-

-

-

-

2,3-Dinitrotoluene

17*

0.37*

-

-

-

-

2,4-Dinitro-6-Methyl Phenol

12

0.26

-

-

-

-

Iron

7439896

1000

300

Pentachlorobenzene

608935

13*

0.28*

-

-

-

-

Pentachloroethane

362*

8.0*

-

-

-

-

1,2,3,5-Tetrachlorobenzene

321*

7.1*

-

-

-

-

1,1,1,2-Tetrachloroethane

630206

980*

22*

-

-

-

-

2,3,4,6-Tetrachlorophenol

58902

7*

0.16*

-

-

-

-

2,3,5,6-Tetrachlorophenol

8.5*

0.19*

-

-

-

-

2,4,5-Trichlorophenol

95954

23*

0.51*

-

-

-

-

2,4,6-Trinitrophenol

88062

4235

94

-

-

-

-

Xylene

1330207

133*

3.0*

-

-

7.Key for § 1.26(J) of this Part

Symbol

Meaning 

*

RIDEM minimum database guidelines.

**

Only data generated in toxicity and bioconcentration tests on TBTCl (tributyltin chloride; CAS 1461-22-9), TBTF (tributyltin floride; CAS 1983-10-4), TBTO [bis(tributyltin) oxide; CAS 56-35-9], commonly called “tributyltin oxide” and TBTS[bis(tributyltin) sulfide; CAS 4808-30-4], commonly called “tributyltin sulfide” were used in the derivation of the water quality criteria concentrations for aquatic life presented herein. All concentrations from such tests are expressed as TBT, not as tin and not as the chemical tested.

^

Freshwater criteria for aluminum are for waters in which the pH is between 6.5 and 9

#

See § 1.26(L) of this Part for ammonia criteria

@

See § 1.26(K) of this Part for criteria equations

-

No criteria recommendation.

$

The aquatic life criteria for these compounds were issued in 1980 utilizing the 1980 Guidelines for criteria development. The acute values shown are final acute values which, by the 1980 Guidelines, are instantaneous values as contrasted with a Criteria Maximum Concentration (CMC)which is a one-hour average.

1

Carcinogens calculated at 10-5 risk

2

Criteria are in µg/l unless otherwise noted: µg/l = micrograms/liter, ng/l = nanograms/liter, mg/l = milligrams/liter

3

Polychlorinated Biphenyl criteria apply to total PCBs (e.g. the sum of all cogener or all isomer or homolog or Aroclor analyses.)

4

Polycyclic Aromatic Hydrocarbons criteria apply to each of the following: indeno(1,2,3-cd)pyrene (CAS Number 193395), dibenzo(ah)anthracene (CAS Number 53703), benzo(a)anthracene (CAS Number 56553), benzo(a)pyrene (CAS Number 50328), benzo(b)fluoranthene (CAS Number 205992), benzo(k)fluoranthene (CAS Number 207089), chrysene (CAS Number 218019)

5

Freshwater aquatic life criteria values in § 1.26(J) of this Part for the following parameters are presented as dissolved criteria using the EPA recommended conversion factors (CF), as listed in § 1.26(J)(2) of this Part

6

Saltwater aquatic life criteria values in § 1.26(J) of this Part for the following parameters are presented as dissolved criteria using the EPA recommended conversion factors, as listed in § 1.26(J)(3) of this Part

7

Site specific criteria for dissolved copper apply for the following waters: Blackstone River (RI0001003R-01A and RI0001003R-01B) From the MA/RI border to the mouth of the river, Ten Mile River (RI0004009R-01A and RI0004009R-01B) From the MA/RI border to the mouth of the river including Slater Park Pond (included in Ten Mile River (RI0004009R-01A), Turner Reservoir North (RI0004009L-01A) and South (RI0004009L-01B), and Omega Pond (RI0004009L-03). Woonasquatucket River (RI0002007R-10C and RI0002007R-10D) From the Smithfield WWTF discharge to confluence with Moshassuck River.

8.Table of EPA Recommended Conversion Factors (CF)-Freshwater Values

Metal

Acute CF

Chronic CF

Arsenic

1.000

1.000

Cadmium

1.136672 - [(ln H) x 0.041838]

1.101672 - [(ln H) x 0.041838]

Chromium III

0.316

0.86

Chromium VI

0.982

0.962

Copper

0.96

0.96

Lead

1.46203 - [(ln H) x 0.145712]

1.46203 - [(ln H) x 0.145712]

Mercury

0.85

0.85

Nickel

0.998

0.997

Silver

0.85

(no freshwater criteria)

Zinc

0.978

0.986

 

NOTE: (ln H) = natural log of Hardness, using any hardness as appropriate.

 

 

9.Table of EPA Recommended Conversion Factors (CF)-Saltwater Values

Metal

Conversion Factor

Arsenic

1

Cadmium

0.994

Chromium III

(no saltwater criteria)

Chromium VI

0.993

Copper

0.83

Lead

0.951

Mercury

0.85 (see Note below)

Nickel

0.99

Selenium

0.998

Silver

0.85

Zinc

0.946

 

Note: Conversion factors on this table were calculated for acute criteria only. Conversion factors for chronic criteria are not currently available. In the absence of chronic conversion factors saltwater acute conversion factors are used. Chronic criteria for mercury cannot be converted to dissolved because it is based on mercury residues rather than toxicity.

K.Freshwater Criteria Equations and Base e Exponential Values

Parameter

ACUTE (µg/l)

CHRONIC (µg/l)

CF =

ma =

ba =

CF =

mc =

bc =

Cadmium

@

1.0166

-3.924

@

0.7409

- 4.719

Chromium III

0.316

0.8190

3.7256

0.86

0.819

0.6848

Copper

0.96

0.9422

-1.700

0.96

0.8545

-1.702

Lead

#

1.273

-1.46

#

1.273

-4.705

Nickel

0.998

0.846

2.255

0.997

0.846

0.0584

Silver

0.85

1.72

-6.52

-

-

-

Zinc

0.978

0.8473

0.884

0.986

0.8473

0.884

Pentachlorophenol*

-

1.005

-4.869

-

1.005

-5.134

1.Hardness values in § 1.26(K) of this Part are in mg/l as CaCO3

2.Key for § 1.26(K) of this Part

Symbol

Meaning 

*

substitute pH for hardness in the equations for pentachlorophenol

-

no recommended value

@

Cadmium conversion Factors:

acute CF = 1.136673 - [(ln H) x 0.041838)]

chronic CF = 1.101672 - [(ln H) x 0.041838]

[ln H]

natural log of hardness

#

Lead conversion factors

acute and chronic CF = 1.46203 - [(ln H) x 0.145712]

 

NOTE: When an ambient hardness of less than 25 mg/l is used to establish for lead or cadmium, the hardness dependent Conversion Factor (CF) should not exceed one.

L.Ammonia Criteria

1.Freshwater

a.Acute Criteria as Total Ammonia Nitrogen (mg N/L)

pH

Acute Criterion with

Salmonids present

Acute Criterion with

Salmonids absent

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

0.885

1.32

b.Chronic Criteria for Fish Early Life Stages Present, mg N/L

Temperature and pH-Dependent Values of the Chronic Criterion for Fish Early Life Stages Present

pH

Temperature, C

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

0.897

8.1

2.10

2.10

1.91

1.68

1.47

1.29

1.14

1.00

0.879

0.773

8.2

1.79

1.79

1.63

1.43

1.26

1.11

0.973

0.855

0.752

0.661

8.3

1.52

1.52

1.39

1.22

1.07

0.941

0.827

0.727

0.639

0.562

8.4

1.29

1.29

1.17

1.03

0.906

0.796

0.700

0.615

0.541

0.475

8.5

1.09

1.09

0.990

0.870

0.765

0.672

0.591

0.520

0.457

0.401

8.6

0.920

0.920

0.836

0.735

0.646

0.568

0.499

0.439

0.386

0.339

8.7

0.778

0.778

0.707

0.622

0.547

0.480

0.422

0.371

0.326

0.287

8.8

0.661

0.661

0.601

0.528

0.464

0.408

0.359

0.315

0.277

0.244

8.9

0.565

0.565

0.513

0.451

0.397

0.349

0.306

0.269

0.237

0.208

9.0

0.486

0.486

0.442

0.389

0.342

0.300

0.264

0.232

0.204

0.179

c.Chronic Criteria for Fish Early Life Stages Absent, mg N/L

Temperature and pH-Dependent Values of the CCC (Chronic Criterion) for Fish Early Life Stages Absent

pH

Temperature, C

0-7

8

9

10

11

12

13

14

15*

16*

6.5

10.8

10.1

9.51

8.92

8.36

7.84

7.35

6.89

6.46

6.06

6.6

10.7

9.99

9.37

8.79

8.24

7.72

7.24

6.79

6.36

5.97

6.7

10.5

9.81

9.20

8.62

8.08

7.58

7.11

6.66

6.25

5.86

6.8

10.2

9.58

8.98

8.42

7.90

7.40

6.94