Presented below are water quality standards that are in effect for Clean

Tribal code

Ask Donna

What actually matters in this document.

Text

Water Act purposes.

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EPA is posting these standards as a convenience to users and has made

a reasonable effort to assure their accuracy. Additionally, EPA has made

a reasonable effort to identify parts of the standards that are not

approved, disapproved, or are otherwise not in effect for Clean Water

Act purposes.

PUEBLO OF ISLETA

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SURFACE WATER QUALITY STANDARDS

First Adopted January 24, 1992, Tribal Resolution 92-14

Amended March 18,2002, Tribal Resolution 02-064

TABLE OF CONTENTS

Introduction, Authority, and Applicability

SECTION II.

Antidegradation Policy and Implementation Plan

SECTION ill.

General Standards

SECTION IV.

Water Body Uses and Standards Specific to the Uses

SECTIONV.

Designated Uses of PUEBLO OF ISLETA Surface Water Bodies

SECTION VI.

Sampling and Analyses

SECTION VII.

Definitions

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Organoleptic Effect Criteria

Toxic Substances

Total Ammonia Criteria

III.

II..

APPENDICES

SECTION 1.

SECTION I. Introduction, Authority, and Applicability

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Pursuant to Section 518 1 of the Clean Water Acf, the Tribal Council of the PUEBLO OF ISLETA,

a federally-recognized Tribe of Indians, hereby enacts the PUEBLO OF ISLETA Surface Water

Quality Standards.

The purposes of the PUEBLO OF ISLETA Surface Water Quality Standards are as

follows:

to identify the existing and attainable uses that are being designated for which

the surface waters of the PUEBLO OF ISLETA shall be protected;

to prescribe water quality criteria (narrative and numeric) which shall be

imposed in order to fully protect the designated uses;

to assure that degradation of existing surface water quality does not occur;

and

to promote the social welfare and economic well-being of the PUEBLO OF

ISLETA.

These purposes shall be accomplished by incorporating the criteria and other

provisions set forth in the PUEBLO OF ISLETA Surface Water Quality Standards

into the permitting and management process for point source dischargers and

nonpoint source generators, by using those criteria to determine when a designated

use is threatened or impaired, and by requiring the most efficient treatment

technologies to control point sources and requiring implementation of effectual best

management practices for nonpoint sources of pollution.

The PUEBLO OF ISLETA Surface Water Quality Standards apply to all tribal

surface waters, that is, all surface waters within the exterior boundaries of the

PUEBLO OF ISLETA Indian Reservation, including water situated wholly or partly

within, or bordering upon, the Reservation, whether public or private, except for

private waters that do not combine with other public surface waters.

The PUEBLO OF ISLETA Surface Water Quality Standards are consistent with

Section IOI(a)(2) of the Clean Water Act r33 U.S.C. Section 1251(a)(2)1, which

declares that "it is the national goal that, wherever attainable, an interim goal ofwater

quality which provides for the protection and propagation of fish, shellfish, and

wildlife and provides for recreation in and on the water be achieved by July 1, 1983

.... " Primary contact ceremonial use, agricultural water supply use, fish culture use,

and industrial water supply use are other beneficial uses of the PUEBLO OF ISLETA

Tribal surface waters. The PUEBLO OF ISLETA Surface Water Quality Standards

provide that contamination that may result from such uses shall not lower the quality

of the water below what is required for recreation and protection and propagation of

fish, shellfish, and wildlife.

33 U.S.c. Section 1377

33 U.S.C. Section 1251 ~ gg.

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There is hereby created the position of Tribal Water Quality Control Officer. The

Tribal Water Quality Control Officer shall serve under the direction of the Director

of the Pueblo of Isleta 's Environment Department. The Tribal Water Quality Control

Officer shall seek to work in cooperation with the U.S. Environmental Protection

Agency and other agencies of the federal government or of the State of New Mexico

to insure attainment of the PUEBLO OF ISLETA Surface Water Quality Standards.

The antidegradation policy for Tribal surface waters and the procedures for

implementing it are set forth in Section II herein and in the Implementation Plan

referred to therein.

Pursuant to Section 303(c)(1) of the Clean Water Act f33 U.S.C. Section 1313(c)1,

the PUEBLO OF ISLETA shall hold public hearings at least once each three-year

period for the purpose of reviewing and, as appropriate, amending the PUEBLO OF

ISLETA Surface Water Quality Standards. Revisions shall incorporate relevant

scientific and engineering advances.

The PUEBLO OF ISLETA shall issue and approve surface water designations for

tribal waters and shall determine the suitability of bodies of water for recreational

purposes.

Criteria specific to a designated use shall be protected at all times and at all flow

rates. Where water diversion or drought result in flow rates of zero, all discharges

shall meet the criteria for the most sensitive designated use of the receiving water

body. For standing water bodies, criteria particular to a use shall be maintained

whenever the water body is suitable for the use. The General Standards (Section ill,

below) shall be maintained at all times and shall apply to rivers, streams, lakes,

reservoirs, canals, drains, ponds, springs, and wetlands, whether perennial,

ephemeral, or intermittent in nature. The applicable criteria for a body of water shall

be the most stringent criteria required to fully protect the most sensitive use

designated for that body of water. Artificial reservoirs, constructed outside waters of

the United States, used for water treatment are exempt from these standards,

provided however, that the water released from any such reservoir must meet all the

criteria that apply to the receiving body of water.

These surface water quality standards shall be the basis for managing discharges

attributable to point and nonpoint sources of pollution. These surface water quality

standards are not used to control natural background phenomena or acts of God.

In the event that monitoring of water quality identifies reaches where attainable water

quality is less than what is required by the PUEBLO OF ISLETA Surface Water

Quality Standards due to natural background conditions, then the PUEBLO OF

ISLETA may modify the Surface Water Quality Standards to reflect actual

attainability. Modification thereof shall be within the sole discretion of the PUEBLO

OF ISLETA, but shall be sUQiect to the provisions of the Clean Water Act, and shall

be carried out in accordance with use-attainability analysis procedures as defined in

the Code of Federal Regulations at Title 40 Section 131.10 (g) or other appropriate

procedures leading to site-specific criteria.

Errors resulting from inadequate and erroneous data or human or clerical oversight

will be subject to correction by the PUEBLO OF ISLETA. The discovery of such

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errors does not render the remaining and unaffected standards invalid. If any

provision of the PUEBLO OF ISLETA Surface Water Quality Standards, or the

application of any provision of these Surface Water Quality Standards to any person

or circumstance, should be held to be invalid, the application of such provision to

other persons and circumstances and the remainder of the Surface Water Quality

Standards shall not be affected thereby.

It shall be the policy of the PUEBLO OF ISLETA to allow, on a case-by-case basis,

the inclusion of a compliance schedule in aNational Pollutant Discharge Elimination

System permit issued to an existing facility at the time of pennit reissuance or

modification. Such compliance schedule will be for the purpose of providing a

permittee with a reasonable time period to make treatment facility modifications

necessary to comply with water quality based permit limitations. Compliance

schedules shall require compliance at the earliest practicable time and shall specify

milestone dates so as to measure progress toward final compliance.

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SECTION II. Antidegradation Policy and Implementation

Plan

Antidegradation Policy:

Existing uses shall be fully protected. The level of wat r quality necessary to

fully protect existing uses shall be maintained.

Where existing water quality exceeds levels necessaryt support propagation

of fish, shellfish, and wildlife and recreation in and 0 the water, that level

of water quality shall nonetheless be maintained and protected unless it is

found, after full satisfaction of governmental and public participation

requirements, that· a lower level of water quality is required in order to

accommodate important economic or social developm nt in the area in which

the waters are located. In allowing such degradation of urface water quality,

the PUEBLO OF ISLETA shall assure water quality ad quate to fully protect

existing uses while imposing the highest sta ory and regulatory

requirements for point sources and implementati n of effectual best

management practices for nonpoint sources.

Where high quality surface waters constitute an outs ding national or tribal

resource, or waters of exceptional recreational or ecolo ical significance, the

surface water quality and uses of those water bodies sh 11 be fully maintained

and protected.

In those cases where potential water quality impa' ents associated with

thennal discharge are involved, the antidegr dation policy and

implementation method shall be consistent with Sec ion 316 of the Clean

Water Act, as amended, (33 U.S.C. Section 1326).

Implementation Plan.

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Acting under authority delegated by the PUEBLO OF ISLETA Tribal Cotntcil, the Environment

Department shall implement the PUEBLO OF ISLETA Surface Water QualitY Standards, including

the antidegradation policy, by establishing and maintaining controls on the intrhduction of pollutants

into surface waters. More particularly, the Tribal Water Quality Control Officer shall do the

following:

monitor water quality to assess the effectiveness of pollution controls and to

detennine whether water quality standards are being attained;

obtain infonnation as to the impact of effluents on receiving waters;

advise prospective dischargers of discharge requirements;

review the adequacy of the existing data base and obtain additional data when

required;

perfonn ongoing reviews of federal surface water quality requirements and,

as necessary, propose amendments to these standards;

require the highest and best degree of wastewater treatment practicable and

commensurate with protecting and maintaining designated uses and existing

water quality;

develop water quality based effluent limitations and comments on

technology-based effluent limitations, as appropriate, for inclusion in any

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13.

14.

15.

12.

11.

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10.

federal permit issued to a discharger pursuant to Section 402 of the Clean

Water Act (33 U.S.C. Section 1342);

require that these eftluent limitations be included in any such permit as a

condition for Tribal certification pursuant to Section 401 of the Clean Water

Ac~ (33 U.S.C. Section 1341);

Seek to coordinate water pollution control activities with other tribal

agencies and other local, state, and federal agencies, as appropriate;

develop and pursue inspection and enforcement programs in order to ensure

that dischargers comply with requirements of the PUEBLO OF ISLETA

Surface Water Quality Standards and any requirements promulgated

thereunder, and in order to support the enforcement of federal permits by the

U.S. Environmental Protection Agency or the U.S. Army Corps of Engineers;

provide continuing technical training for wastewater treatment facility

operators through training and certification programs;

publish the results of water quality investigations and the interpretation

thereof;

encourage, in con1unction with other agencies, implementation of effectual

best management practices to control nonpoint sources of pollutants to

achieve compliance with the PUEBLO OF ISLETA Surface Water Quality

Standards;

Evaluate the need for, and effectiveness of, best management practices;

and,

Implement the antidegradation policy, which, at a minimum, shall include the

following review of any project that could result in a discharge of pollutants

to PUEBLO OF ISLETA surface waters.

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ANTIDEGRADATION REVIEW SCHEME

Is the proposed activity located on,

or upstream of an outstanding

National Resource Waterbody (ONRW)?

Proposed activity cannot result in

permanently increased pollutant

loads or concentrations in ONRW.

Minimal pollutant increases,

resulting from short-term projects,

which will ultimately improve water

quality, could be allowed.

will the proposed activity

result in adverse, long-term

changes to the existing water

Complete necessary review including:

Is the project of significant socio-economic

importance?

will existing uses be fully protected?

Are all required point and nonpoint source

controls in place?

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Has the waterbody been designated

as high quality or is it eligible

for such protection?

Unless other

non-detrimental

alternatives

exist, the

proposed activity

must be denied

If all questions are answered in the affirmative, authorize

project. If any are negative,. deny authorization for

current proposal as designed. Allow proponent to

redesign project with additional preventative

measures and then re-evaluate.

Proposed activity may be authorized if existing uses and water quality

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SECTION III. General Standards

The following General Standards apply to all surface waters of the PUEBLO OF ISLETlA, including

intennittent and ephemeral streams, provided, however, that where Section IV belo set stricter

criteria for designated water bodies, the stricter criteria supersede the General Standar

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Stream Bottom Deposits: Surface waters shall be free from water con

ants from

other than natural causes that may settle and have a deleterious effect 0 the aquatic

biota or that will adversely alter the physical or chemical properties ofth water or the

bottom sediments.

Floating Solids, Oil, and Grease: Surface waters shall be free from oqiec .onable oils,

scum, foam, grease, and other floating materials and suspended sub tances of a

persistent nature resulting from other than natural causes (including visibl films of oil,

globules of oil, grease, or solids in or on the water, or coatings on s earn or lake

banks). As a guideline, oil and grease discharged into surface waters sh I not exceed

10 mg/liter on a weekly average or 15 mg/liter instantaneous maximum.

Color: Surface waters shall be free from true color-producing materials fr m other than

natural causes that create an aesthetically undesirable condition. Color sh I not impair

the designated, existing or attainable uses of a water body. Color-produc' substances

from other than natural sources are limited to concentrations equivalen to 70 color

units (CU).

Odor and Taste:

Contaminants from other than natural causes ar limited to

concentrations that do not impart unpalatable flavor to fish, and that do not result in

offensive odors arising from the water, and that do not otherwise inte ere with the

designated and other attainable uses of a water body. Taste and od r-producing

substances from other than natural origins shall not interfere with the pr duction of a

potable water supply by modem treatment methods. The criteria adopte to prevent

organoleptic effects are found in Appendix I.

Nuisance Conditions: Plant nutrients or other substances stimulating alg growth, or

growth of excessive rooted aquatic vegetation, from other than natural ca ses shall not

be present in concentrations that produce objectionable algal densities or nuisance

aquatic vegetation, or that result in a dominance of nuisance species ins earn, or that

cause nuisance conditions in any other fashion. Plant nutrient concentrati ns shall not

be permitted to reach levels which result in man-induced eutrophication roblems. If

nuisance conditions resulting from plant nutrients are identified in the s ace waters

of the PUEBLO OF ISLETA limitations for such nutrients may be estab ished by the

PUEBLO OF ISLETA in accordance with the U.S. Environmental Protect' nAgency's

"Ambient Water Quality Recommendations. Infonnation Supporting the evelopment

of State and Tribal Nutrient Criteria. Rivers and Streams in Nutrient Ecoregion III.

(EP A 822-B-00-O 16, December 2000) and incorporated into these Surface Water

Quality Standards.

Pathogens: Surface waters shall be virtually free from pathogens. Waters used for

irrigation of table crops (e.g., lettuce, peppers or onions) shall be virtually free of

Salmonella and Shigella species.

Turbidity: Turbidity attributable to other than natural causes shall not reduce light

transmission to a point where aquatic biota are inhibited or to a point that causes an

unaesthetic and substantial visible contrast with the natural appearance of the water.

Specifically, turbidity shall not exceed 5 NTU over background when background

turbidity is 50 NTU or less, with no more than a 10 percent increase when background

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turbidity is more than 50 NTU.

Mixing Zones: Where effluent is discharged into surface waters the effluent shall not

result in concentrations of any contaminant exceeding any water quality criteria or in

the depletion of oxygen such that oxygen concentrations fall below 5.0 ppm or the

change in pH such that it falls outside the accep~ble pH range.

Radioactive Materials: Concentrations of gross alpha and gross beta particle activity

shall not exceed the concentration caused by erosion of naturally-occurring geologic

materials. The combined dissolved concentration of Radium-226 and Radium-228,

shall not exceed 5 picocuries per liter. Gross alpha particle concentrations, including

Radium-226 but excluding radon and uranium, shall not exceed 15 picocuries per liter.

The average annual concentration of beta particles and of photon radioactivity in

surface waters shall not produce an annual dose equivalent to the total body or any

internal organ greater than 4 milliremlyear. Tritium concentrations shall not exceed

20,000 picocuries per liter and Strontium 90 concentrations shall not exceed 8

picocuries per liter.

Temperature: The introduction of heat by other than natural causes shall not increase

the temperature in a stream, by more than 2.7 C (5 F), based upon the weekly average

of the maximum daily temperatures measured at mid-depth or three feet (whichever is

less). In lakes, the temperature of the water column or epilimnion (if thermal

stratification exists) shall not be raised more than 1.7 C (3 F) above that which existed

before the addition of heat of artificial origin, based upon the average of temperatures

taken from the surface to the bottom or surface to the bottom of the epilimnion (if

stratified). The normal daily and seasonal variations that were present before the

addition of heat from other than natural sources shall be maintained. In no case shall

man-introduced heat be permitted when the maximum temperature specified for the

reach (20 C/68 F for coldwater fisheries and 32.2 C/ 90 F for warmwater fisheries)

would thereby be exceeded. Privately-o'Yfled lakes and reservoirs used in the process

of cooling water for industrial purposes may be classified using a less stringent

special-use standard for thermal components, provided however, that the water released

from any such lake or reservoir into a stream system or into Tribal lakes meets the

surface water quality standards of the receiving stream. High water temperatures caused

by unusually high ambient air temperatures are not violations of these standards.

SalinitylMineral Quality (total dissolved solids, chlorides, and sulfates): Existing

mineral quality shall not be altered by municipal, industrial, and instream activities, or

other waste discharges so as to interfere with the designated or attainable uses for a

water body. An increase of more than 113 over naturally-occurring levels shall not be

permitted.

The pH of a water body shall not be permitted to fluctuate in excess of 1.0 unit over a

period of 24 hours for other than natural causes.

If a water body is capable of supporting aquatic life, the dissolved oxygen standard will

be a minimum of 5 mg/l.

Toxic Substances:

Toxic substances shall not be present in surface waters in quantities that are

toxic to human, animal, plant, or aquatic life, or in quantities that interfere with

the normal propagation, growth, and survival of the sensitive indigenous

aquatic biota. There shall be no acute toxicitY and no significant chronic

toxicity in any PUEBLO OF ISLETA surface water.

For toxic substances lacking EPA published criteria, biomonitoring data may

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be used to determine compliance with this narrative standard in accordance

with EPA standard acute and chronic biological test protocols. These protocols

can be found in "Methods for Measuring the Acute Toxicity of Effluents to

Freshwater and Marine Organisms, EPA-600/4-901027 F~ Short Tenn Methods

for Estimating the Chronic Toxicity of Effluents and Receiving Waters to

Freshwater Organisms", EPA-600/4-911002; U.S. Environmental Protection

Agency, "Technical Support Document for Water Quality-Based Toxics

Control" EPAJSOS/2-90-001; U.S. Environmental Protection Agency, Region

VI, "Post Third Round NPDES Pennit Implementation Strategy"; and U.S.

Environmental Protection Agency, "Quality Criteria for Water, 1986" or the

latest revisions thereof. Alternatively, the PUEBLO OF ISLETA may use

results of toxicological studies published in scientific journals to calculate a

chronic criterion necessary to protect the aquatic biota exposed to toxic

substances. The chronic criterion for any toxic substance which does not

bioaccumulate or biomagnify shall be ten percent (10%) of the LC-SO of the

water body's most sensitive species. The handling of toxicants in surface

waters that are known to be persistent, bioaccumulative, carcinogenic, and/or

synergistic with other waste stream components shall be addressed on a

case-by-case basis.

Toxic substance criteria for surface waters with designated aquatic life uses,

or from which fish are caught for human consumption, are found in Appendix

II.

Biological Integrity: All surface waters of the PUEBLO OF ISLETA with an existing

or attainable fisheries use must demonstrate aquatic life communities which are similar

in variety and abundance to least-disturbed waters within the Middle Rio Grande Basin

and with similar hydrologic conditions. Measurements of biological integrity should

include fish community structure and other associated aquatic life components. A

significant adverse alteration of the abundance or variety of the aquatic life community

constitutes a violation of these surface water quality standards.

Sediment quality: Man-made orman-induced activities shall not result in sediment with

contaminants at concentrations which are toxic if absorbed by aquatic biota, livestock,

wildlife or man or in quantities that interfere with the normal propagation, growth, and

survival of the existing aquatic biota.

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SECTION IV. Water Body Uses and Standards Specific to

the Uses

Marginal Coldwater Fishery Use. A marginal coldwater fishery is a stream or river

reac~ lake, or impoundment where water temperature and other characteristics are

s:uitable for support of a balanced aquatic life community which includes coldwater fish

(such as brown trout, cutthroat trout, brook trout, or rainbow trout), but where

temperature and other characteristics may not always be suitable for propagation of

coldwater fish.

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Standards specific to the use are as follows:

Dissolved oxygen minimum: 6 mg/l

Temperature maximum: 20 C (68 F)

pH range: 6.6-9.0

Total ammonia (as N) shall not exceed at any time the Environmental

Protection Agency' s national recommended Acute Criterion or, exceed

more than once in any three-year period, the Chronic Criterion as

contained in Appendix ill.

Total residual chlorine maximum: 11 ,ug/L

Coldwater Fishery Use. A coldwater fishery is a stream or river reach, lake, or

impoundment where water temperature and other characteristics are suitable for support

of a balanced aquatic life community which includes and propagation of coldwater fish

such as brown trout, cutthroat trout, brook trout, or rainbow trout. (See Section VII,

"Definitions," below.)

Standards specific to the use are as follows:

Dissolved oxygen minimum: 6 mg/l

Temperature maximum: 20 C (68 F)

pH range: 6.6-8.8

Total amm~nia (as N) shall not exceed at any time the Environmental

Protection Agency's national recommended Acute Criterion or, exceed

more than once in any three-year period, the Chronic Criterion as

contained in Appendix ill.

Total residual chlorine maximum: 11 ,ug/L

Warmwater Fishery Use. A warmwater fishery is a stream or river reach, lake, or

impoundment where water temperature and other characteristics are suitable for support

of a balanced aquatic life community which includes and propagation of warmwater

fish such as large-mouth black bass, small-mouth black bass, crappie, white bass,

bluegill, flathead catfish, or channel catfish.

Standards specific to the use are as follows:

Dissolved oxygen minimum: 5 mg/l

Temperature maximum: 32.2 C (90 F)

pH range: 6.0-9.0

Total ammonia (as N) shall not exceed at any time the Environmental

Protection Agency's national recommended Acute Criterion or, exceed more

than once in any three-year period, the Chronic Criterion as contained in

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Appendix ID.

Total residual chlorine maximum: 11 fJ,g/L

Primary Contact Ceremonial Use. Primary contact ceremonial use means the use of a

stream or river reach, lake, spring or impoundment for religious or traditional purposes

by members of the PUEBLO OF ISLETA; such use involves immersion, and

intentional or incidental ingestion of water, and it requires protection of sensitive and

valuable aquatic life and riparian habitat.

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Standards specific to the use are as follows:

1. Bacteria 3

Geometric mean maximum Escherichia coli (E. coli): 47 per 100 ml

(geometric mean calculation based on a minimum offive samples taken

over a maximum of30 days) single sample maximum: 88 coloniesll 00

ml.

The open water shall be free from algae in concentrations causing a

nuisance condition or causing gastrointestinal or skin disorders.

Concentrations of the following substances shall not exceed:

SUBSTANCE (Total unless otherwise indicated)

Diazinon

Ethylbenzene

Methoxychlor

2,4-Dichlorophenoxyacetic acid

Toluene

Total trihalomethanes

Trichloroethylene

1,1, I-Trichloroethane

Total Xylenes

Antimony (dissolved)

Barium (dissolved)

Beryllium (dissolved)

Cadmium (dissolved)

Chromium (dissolved)

Cyanide (amenable to chlorination)

Fluoride

Total Inorganic Nitrogen 4

MerclllY

Selenium (total recoverable)

Thallium (dissolved)

Primary Contact Recreational Use. Primary contact recreational use means the

recreational use of a stream. or river reach, lake, or impoundment involving prolonged

Criterlli

0.2 ttg/L

0.7 mgIL

40 ttg/L

70 f.lg/L

1.0 mg/L

80 ug/L

5 ttgIL

0.20 mgIL

10.0 mg/L

6 ttg/L

2.0 mg/L

4.0 ug/L

5.0 ttgIL

0.1 mg/L

0.2 mg/L

4.0 mg/L

10.0 mg/L

2.0 ug/L

50 f.lg/L

2.0 f.lg/L

Until the U.S. Environmental Protection Agency approves analytical methods for E. coli, and

publishes such methods in the Code of Federal Regulations (40 CFR 136), fecal coliform bacteria

can be used as an alternative bacterial indicator. When so used, the applicable criteria shall be:

geometric mean maximum Fecal Coliform Bacteria: 100 per 100 ml (geometric mean calculation

based on a minimum offive samples taken over amaximurn of30 days) single sample maximum:

200 coloniesll 00 ml.

Shall be calculated as: Total Inorganic Nitrogen (TIN) = Anunonia (NH3) + Ammonium (NH4 ) + Nitrate (N0 3 ) +

Nitrite (N0 2)

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contact and the risk of ingesting water in quantities sufficient to pose a health hazard;

examples are swimming and water skiing.

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Standards specific to the use are:

Bacteria 3

geometric mean maximum Escherichia coli (E. coli): 47 per 100 ml (geometric

mean calculation based on a minimum of five samples taken over a maximum

of 30 days) single sample maximum: 88 colonies/I 00 mI.

pH range: 6.6-9.0

The open water shall be free from algae in concentrations causing a nuisance

condition or causing gastrointestinal or skin disorders.

Agricultural Water Supply Use. Agricultural water supply use means the use of water

for irrigation and livestock watering.

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Concentration of the following substances shall not exceed the following

criteria:

SUBSTANCE

LIVESTOCK

IRRIGATION

Aluminum, dissolved

5.0 mg/L

Arsenic, dissolved

0.2 mg/L

Boron, dissolved

5.0 mg/L

0.75 mg/L

0.05 mg/L

Cadmium, dissolved

Chromium, dissolved

1.0 mg/L

Cobalt, dissolved

1.0 mg/L

0.05 mg/L

Copper, dissolved

0.5 mg/L

Fluoride, dissolved

2.0 mg/L

1.0 mg/L

Lithium, dissolved

2.5 mgIL

0.01 mg/L

Mercury, Total

Molybdenum, dissolved

0.01 mg/L

Selenium, total rec,

0.05 mg/L

Vanadium, dissolved

0.1 mg/L

Fish Culture Use. Fish culture use means the use of a stream or river reach, lake, or

impoundment for production of coldwater or warmwater fish in a hatchery or rearing

station. There are no standards specific to the use. The "General Standards" (Section

ill, above) apply.

Industrial Water Supply Use. Industrial water supply use means use with reference to

the production of goods or services for profit. There are no standards specific to the use.

The "General Standards" (Section ill, above) apply.

Wildlife Usage. Wildlife Usage means the use of the surface waters of the PUEBLO

OF ISLETA by nondomesticated plants and animals for direct water consumption,

foraging or where the waters and their associated wetland/riparian areas are used for

habitat, cover and!or propagation. Waters designated for wildlife usage shall not

contain any substance at concentrations which would be deleterious to any

nondomesticated plant or animal or that could bioaccumulate or biomagnify to such

deleterious levels. The following criteria shall not be exceeded.

SUBSTANCE (Total unless otherwise indicated)

DDT and metabolites

Mercury

PCBs (Total of all forms)

Selenium (total recoverable)

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Criteria

11 ng/L

1.1ngIL

74 ng/l

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Section V.

Uses:

The designated uses are as follows for the segment of the Rio Grande that passes

through the PUEBLO OF ISLETA Reservation, from a northernmost point located in

Township 8 North, Range 2 East, Section 1, Southwest Quarter, approximately 1/4 mile

south of the 1-25 overpass over the Rio Grande, to a southernmost point

.. located in

Township 7 North, Range 2 East, Section 15, Northeast Quarter, approximately two

miles north of the State Road 49 bridge over the Rio Grande, including all tributaries

thereof, except for water bodies· such as Drains, that are separately designated in this

Section (Section V):

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Designated Uses of PUEBLO OF ISLETA Surface

Wa ter Bodies

Warmwater fishery use

Primary contact ceremonial use

Primary contact recreational use

Agricultural water supply use

Industrial water supply use

Wildlife usage

The designated uses are as follows for the Isleta Lakes:

Uses:

Marginal coldwater fishery use

Warmwater fishery use

Primary contact ceremonial use

Primary contact recreational use

Agricultural water supply use

Industrial water supply use

Wildlife usage

The designated uses are as follows for the following water bodies:

Largo Spring

L~ian Spring

Padilla Spring

Manzano Spring

Pitch Spring

Goat Spring

Bar Chical

Coyote Bay Spring

Carolino Spring

Gotera Spring

Guadalupe Spring

Hells Canyon Spring

White Rock Spring

Hubble Spring

Sandhill Ponds

Sand Spring

Cabin Spring

Questa Spring

Blue Spring

Bear Spring

Gallina Spring

Rio Puerco

Albuquerque Riverside Drain (segment within the Reservation)

Atrisco Riverside Drain (segment within the Reservation)

Isleta Interior Drain (segment within the Reservation)

Indian Interior Drain

Isleta Riverside Drain

Belen Riverside Drain (segment within the Reservation)

Peralta Riverside Drain (segment within the Reservation)

Page -14-

Tome Interior Drain (segment within the Reservation)

Uses:

Warmwater fishety use

Primal]' contact ceremonial use

Primal]' contact recreational use

Agricultural water supply use

Industrial water supply use

Wildlife usage

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Page-15-

SECTION VI. Sampling and Analyses

Sample collection, preservation, and analysis used to determine water quality and to

maintain the standards set forth in the Surface Water Quality Standards shall be

performed in accordance with procedures prescribed by the latest EPA authoritative

analytical reference, including but not limited to the latest editions of any of the

following authorities: (1) American Public Health Association, "Standard Methods for

the Examination of Water and Wastewater"; (2) "Methods for Chemical Analysis of

Water and Wastes"; or (3) "EPA Guidelines Establishing Test Procedures for the

Analysis of Pollutants" as published at 40 CFR 136.

Bacteriological Surveys: The monthly geometric mean is used in assessing attainment

of standards when a minimum of five samples is collected in a 30-day period. When

fewer than 5 samples are collected in a 30-dayperiod, no single sample shall exceed the

applicable upper limit for bacterial density set forth in Section IV.

Sampling Procedures:

Streams: Stream monitoring stations below waste discharges shall be located a

sufficient distance downstream to ensure adequate vertical and lateral mixing

Reservoirs and Lakes: Sampling stations in reservoirs shall be located at least

250 feet from a waste discharge, and, otherwise, where the attainment of a water

quality standard is to be assessed. Water quality measurements shall be taken at

intervals in the water column at a sampling station. For toxic substances and

nutrients, the entire water column shall be monitored. For dissolved oxygen in

stratified lakes, measurements shall be made in the epilimnion. In nonstratified

lakes measurements will be made at intervals throughout the entire water

column.

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Page -16-

SECTION VII. Definitions

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"Acute Toxicity": Toxicity which exerts short term unacceptable impacts on representative

sensitive organisms with a duration of exposure generally less than or equal to 96 hours;

"Agricultural water supply use": The use of water for irrigation and livestock;

"Algae": Simple· plants without roots, stems, or leaves which contain chlorophyll and are

capable of photosynthesis;

"Antidegradation": The policy set forth in U.S. Environmental Protection Agency Water

Quality Standards Regulations under the Clean Water Act whereby existing uses and the level of water

quality necessary to maintain those uses is maintained and protected (See 40 C.F .R. Section 131.12 );

"Aquatic biota" or "Aquatic Life": Animal and plant life in the water;

"Attainable use": A use ofa surface water body which has the level of water quality and other

characteristics that are needed to support the use, or which would have the level of water quality and

other characteristics needed to support the use upon implementation of and compliance with the

pertinent narrative and numeric standards in the PUEBLO OF ISLETA Water Quality Standards. Uses

are deemed attainable if they can be achieved by the imposition of effluent limits required under the

federal Clean Water Act sections 301 (b) 5 and 306 6 and implementation of effectual best management

practices for nonpoint source control;

"Best management practices": Practices undertaken to control, restrict, and diminish nonpoint

sources of pollution, that are consistent with the purposes of the PUEBLO OF ISLETA Surface Water

Quality Standards and with the narrative and numeric standards contained therein; measures, sometimes

structural, that are determined to be the most effective practical means of preventing or reducing

pollution of water bodies from nonpoint sources;

"Bioaccumulation": is a process by which a compound is taken up by an aquatic organism, both

from water and through food;

"Biomagnification": is the process by which the concentration of a compound increases in

species occupying successive trophic levels;

"Carcinogenic": Cancer producing;

"Chronic toxicity": Toxicity which exerts sublethal negative effects such as impairment of

growth or reproduction, or which becomes lethal after long term exposure, generally measured in a

28-day test on representative sensitive organisms;

"Coldwater fishery": A stream reach, lake, or impoundment where water temperature and other

characteristics are suitable for support and propagation of a balanced aquatic life community including

coldwater fish such as brown trout, cutthroat trout, brook trout, or rainbow trout;

"Color": True color as well as apparent color. True color is the color of the water from which

turbidity has been removed. Apparent color includes not only the color due to substances in solution

(true color), but also that color due to suspended matter;

"Criteria": elements of surface water quality standards, expressed as constituent concentrations,

levels, or narrative statements, representing a quality of water that supports a particular use. When

criteria are met, water quality will generally protect the designated use.

"Cumulative": Increasing by successive additions;

"Designated uses": Those uses set forth in the surface water quality standards herein that are

to be protected;

"Dissolved oxygen (DO)": The amount of oxygen dissolved in water or the amount of oxygen

available for biochemical activity in water, commonly expressed as a concentration in milligrams per

33 U.S.C. Section § 1311(b)

33 V.S.c. Section § l316.

Page-17-

liter.

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"Eflluent": Discharge into surface waters from other than natural sources;

"Ephemeral stream":

A stream or reach that flows briefly only in direct response to

precipitation or snowmelt in the immediate locality, the channel bed of which is always above the water

table in the surrounding area;

"Epilimnion": The layer of water that overlies the thermocline of a lake and that is subject to

the action of wind;

"Eutrophication": The maturation of a body of water, involving increasing concentration of

dissolved nutrients and seasonal oxygen deficiency.

"Escherichia coli (E. coli)": A bacterium which normally inhabits the human digestive system

although some forms are also found in other mammals. Several forms of this bacterium that have been

found to cause diarrheal diseases in humans are found in waters used for recreation and are known to

have caused health problems when ingested during recreational activities.

"Existing uses": Those uses actually attained in a surface water body on or after November 28,

1975, whether or not they are referred to in the PUEBLO OF ISLETA Surface Water Quality Standards;

"Fecal coliform bacteria": Gram negative, non spore-forming rod-shaped bacteria which are

present in the gut or the feces of warmblooded animals. Fecal coliform bacteria generally includes

organisms which are capable of producing gas from lactose broth in a suitable culture medium within

24 hours at 44.5+/-0.2 C.

"Fish culture": The production of fish in a hatchery or rearing station;

"Fishery": A balanced, diverse community of fishes andlor other components ofthe aquatic biota

controlled by the water quality, quantity, and habitat of a waterbody;

"Geometric Mean": Antilog of the mean of the logs ofa set of numbers;

"Indigenous": Produced, growing, or living naturally in a particular region or environment;

"Industrial water supply use": The use of water with reference to the production of goods or

services for profit;

"Intermittent stream": A stream or reach of a stream that flows only at certain times of the year,

when receiving flow from springs, melting snow, or localized precipitation;

"LC-50": is an estimate of the toxicant concentration that would be lethal to fifty percent (50%)

of the trial organisms during a specified time period;

"Marginal coldwater fishery": A stream reach, lake, or impoundment where water temperature

and other characteristics are suitable for support of a balanced aquatic life community including

coldwater fish (such as brown trout, cutthroat trout, brook trout, or rainbow trout), but where

temperature and other characteristics may not always be suitable for propagation of coldwater fish;

"Milligrams per Liter (mg/i)": The concentration at which one milligram is contained in a

volume of one liter; one milligram per liter is equivalent to one part per million (ppm) at unit density;

"Narrative standard": A standard or criterion expressed in words rather than numerically;

"Natural background": Characteristics that are not man-induced that are related to water quality;

the levels of pollutants present in ambient water that are from natural, as opposed to man-induced,

sources;

"Nonpoint source": A source of pollution that is not a discernible, confmed, and discrete

conveyance; a diffuse source which flows across natural or manmade surfaces, such as run-off from

agricultural, construction, mining, or silvicultural activities, or from urban areas;

"NTU": Nephelometric Turbidity Units; a measure of turbidity in water;

"Nuisance condition": A condition involving uncontrolled growth of aquatic plants, usually

caused by excessive nutrients in the water.

"Nutrient": A chemical element or inorganic compound taken in by green plants and used in

organic synthesis;

"Organoleptic effects": contaminants whose presence cause adverse taste or odors in water or

Page -18-

fish.

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"Perennial stream": A stream or reach of a stream that flows continuously throughout the year,

the upper surface of which is generally lower th the water table of the region adjoining the stream;

"Persistent": Resistant to degradation 0 change;

"pH": The negative logarithm of the effi tive hydrogen-ion concentration in gram equivalents

per liter; a measure of the acidity or alkalinity 0 a solutio~ increasing with increasing alkalinity and

decreasing with increasing acidity;

"Picocurie (PCi)": Thatquantityofradio tive material producing 2.22 nucleartransfonnations

per minute;

"Point source": Any discernible, contin d, and discrete conveyance from which pollutants are

or may be discharged into a water body; does n t include return flows from irrigated agriculture;

"Primary contact ceremonial use":

use of a stream, reach, lake, or impoundment for

religious or traditional purposes by members of the PUEBLO OF ISLETA; such use involves

immersion, and intentional or incidental ingesti n of water, and it requires protection of sensitive and

valuable aquatic life and riparian habitat;

"Primary contact recreational use": Rec ational use of a stream, reach, lake, or impoundment

involving prolonged contact and the risk of ing sting water in quantities sufficient to pose a health

hazard; examples are swimming and water ski'

"Segment": A water quality standards egment, the surface waters of which have common

hydrologic characteristics or flow regulation re . es, possess common natural physical, chemical, and

biological characteristics, and exhibit common r actions to external stresses, such as the discharge of

pollutants;

"Thennal Stratification": Horizontalla rs of different densities produced in a lake caused by

temperature;

"Toxicity": State or degree of being tox c or poisonous; lethal or sublethal adverse effects on

representative sensitive organisms, due to expos e to toxic materials;

"Turbidity": A measure of the amount 0 suspended material, particles, or sediment, which has

the potential for adverse impacts on aquatic bio ;

"Use-attainability analysis": A struc ed scientific assessment of the factors affecting

attainment of a use for a body of water, which as essment may include physical, chemical, biological,

and economic factors, such as those referred to' 40 C.F.R. Section 131.1 O(g), and guidance for which

may be found in U.S. Environmental Protecti n Agency, "Technical Support Manual: Waterbody

Surveys and Assessments for Conducting Use- ttainability Analyses" (Volume I--Streams; Volume

2--Estuarine Systems; Volume 3--Lake Systems;

"Warmwater fishery": A stream reach, lake, or impoundment where water temperature and

other characteristics are suitable for support an propagation of a balanced aquatic life community

including wannwater fish such as Red shiner, athead minnow, Flathead chub, Longnose dace, Rio

Grande silvery minnow, River carpsucker, Rio rande sucker, large-mouth black bass, small-mouth

black bass, crappie, white bass, bluegill, flathe catfish, or channel catfish;

"Water Contaminant": Any substanc which alters the physical, chemical, or biological

qualities of water;

"Waters of the United States": Means y or all of the following

All waters which are currently used, were used in the past, or may be susceptible to use

in interstate or foreign commerce, including all waters which are subject to the ebb and

flow of the tide;

All interstate waters, including interstate "wetlands;"

All other waters such as intrastate lakes, rivers, streams (including intermittent streams),

mudflats, sandflats, "wetlands," sloughs, prairie potholes, wet meadows, playa lakes,

or natural ponds the use, degradation, or destruction of which would affect or could

Page -19-

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affect interstate or foreign commerce including any such waters:

Which are or could be used by interstate or foreign travelers for recreational or

other purposes;

From which fish or shellfish are or could be taken and sold in interstate or

foreign commerce; or

Which are used or could be used for industrial purposes by industries in

interstate commerce;

All impoundments of waters otherwise defined as waters of the United States under this

definition;

Tributaries of waters identified in paragraphs (a) through (d) of this definition;

The territorial sea; and

"Wetlands" adjacent to waters (other than waters that are themselves wetlands)

identified in paragraphs (a) through (t) of this definition.

Page -20-

APPENDIX I.

ORGANOLEPTIC EFFECT CRITERIA

POLLUTANT

20 f.1,g/L

Monochlorobenzene

20 f.1,glL

Chlorophenols (3- or 4-)

o.l,ug/L

2,3- Dichlorophenol

40 nglL

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Acenaphthene

2,5- Dichlorophenol

0.5,ug/L

2,6 -DicWorophenol

0.2,ug/L

3,4 -DicWorophenol

0.3,ug/L

2,4,5- TricWorophenol

1.0 ,ug/L

2,4,6- Trichlorophenol

1.8 mglL

3.0 mg/L

3-Methyl-6-Chlorophenol

20 f.1,g/L

2-Chlorophenol

0.1,ug/L

3-Methyl-4-Chlorophenol

Copper

1.0 mglL

2,4-Dichlorophenol

0.3,ug/L

l,ug/L

2-Methyl-4-Chlorophenol

2.0,ug/L

2,3,4,6-Tetrachlorophenol

CRITERIA

2,4-Dmethylphenol

400,ug/L

Hexachlorocyclopentadiene

l,ug/L

Nitrobenzene

30,ug/L

Pentachlorophenol

30 f.1,g/L

Phenol

300,ug/L

Zinc

5.0 mglL

Appendix I. Page 21

APPENDIX II. Toxic Substances.

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TRACE ELEMENTS, MAJOR METALS AND METALOIDS

FRESH WATER AQUATIC LIFE CRITERIA

HUMAN HEALTH

CRITERIA I

(Based on fish consumption ONLY)

CHRONIC TOXICITY

SUBSTANCE

Aluminum, dissolved

Antimony, dissolved

Arsenic, dissolved

150

(e (0.7409 [In {hd}] -4.719)) (0.938)

units / Liter

NOT TO EXCEED

750

4.3 mg/L

340

4.2,ug/L

(e (1.0166 [In {hd}]- 3.924~(0.973)

(e (0.819 [In {hd}] +0.6848)) (0.86)

Copper, dissolved

(e (0.8545 [In{hd}-1.702~ (0.96)

Iron, dissolved

1,000

---

(e (0.9422 [1n{hd}-1.7~ (0.96)

I The values stated below as "HUMAN HEALTH CRITERIA" for the individual pollutants are based on the

assumption that fish from the surface waters covered by the PUEBLO OF ISLETA Surface Water Quality Standards

are consumed but waters from these surface waters are not regularly ingested. A risk of 10- 6 is hereby

designated for protection from carcinogens.

2 Chronic and acute criteria shall be applied to individual datum, no averaging is allowed.

Acute

criteria shall not be exceeded.

Chronic criteria shall not be exceeded more than once in any three year

period.

Appendix II. Page 22

(e (0.819 [In{hd}]+3.7256~ (0.316)

Chromium, dissolved

Cadmium, dissolved

ACUTE TOXICITY

(,ug/L) 2

APPENDIX II. Toxic Substances.

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TRACE ELEMENTS, MAJOR METALS AND METALOIDS (CONTINUED)

FRESH WATER AQUA TIC LIFE CRITERIA

HUMAN HEALTH

CRITERIA 1

(Based on fish consumption

CHRONIC TOXICITY

(j1,g/L)2

SUBSTANCE

Mercury, total

0.012

ACUTE TOXICITY

(j1,g/L?

units / Liter

NOT TO EXCEED

(e (1.273 [In{hd}-1.46)) (cf) 3

2.4

51 ng/L 4

(e (1.273 [In {hd} -4.705)) (cf) 3

Lead, dissolved

ONLY)

(e (0.846[In {hd} ] + 0.0584)) (0.997)

(e (0.846[ln {hd} ] + 2.255))(0.998)

4.6 mglL

Selenium, total

recoverable

11 mg/L

(e (1.72[ln{hd}]-6.6825))

6.3 j1,glL

(e (O.8473[1n{hd}]+O.8618))

Silver, dissolved

(e (0.8473[ln {hd} ]+0.884))(0.986)

Thallium, dissolved

Zinc, dissolved

Nickel, dissolved

3 The hardness-:dependent formulae for lead must be multiplied by a conversion factor (cf) to be expressed as dissolved values. The CV for both the

chronic and the acute criterion is CV = 1.46203 - [In(hardness)(O.l45712)]

Concentrations of mercury from all sources shall not result in methylmercury concentrations in fish tissue that exceed 0.3 mg/kg.

Appendix II. Page 23

APPENDIX II. Toxic Substances.

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Non-Metallic Inorganics

FRESH WATER AQUATIC LIFE CRITERIA

HUMAN HEALTH

CRITERIA 1

(Based on fish consumption ONLY)

Cyanide, amenable to

chlorination

5.2

Sulfide, hydrogen

2.0

units / Liter

NOT TO EXCEED

220 mg/L

Chlorine, total residual

ACUTE TOXICITY

(,ug/L) 2

CHRONIC TOXICITY

(,ug/L) 2

SUBSTANCE

ORGANIC CONTAMINATES

HIGH MOLECULAR WEIGHT POLYNUCLEAR AROMATIC HYDROCARBONS

HUMAN HEALTH

CRITERIA 1

FRESH WATER AQUATIC LIFE CRITERIA

SUBSTANCE

CHRONIC TOXICITY

(,ug/L) 2

ACUTE TOXICITY

(,ug/L) 2

units / Liter

NOT TO EXCEED

370,ug/L

Fluoranthene

(Based on fish consumption ONLY)

Appendix II. Page 24

APPENDIX II. Toxic Substances.

ORGANIC CONTAMINATES

PHTHALATES

CHRONIC TOXICITY

(l-lg/L) 2

Bis (2-Ethylhexyl) Phthalate

Diethyl Phthalate

Butylbenzyl Phthalate

units I Liter

NOT TO EXCEED

5.9 I-lg/L

120 mgIL

---

5.2 mgIL

------. .

(Based on fish consumption

ONLY)

12 mg/L

Di-n-Butyl Phthalate

HUMAN HEALTH

CRITERIA I

ACUTE TOXICITY

(l-lg/L) 2

SUBSTANCE

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FRESH WATER AQUATIC LIFE CRITERIA

ORGANIC CONTAMINATES

PHENOLS

HUMAN HEALTH

CRITERIA 1

(Based on fish consumption

ONLY)

SUBSTANCE

CHRONIC TOXICITY

(l-lg/L) 2

ACUTE TOXICITY

(l-lg/L) 2

uni ts I Liter

NOT TO EXCEED

FRESH WATER AQUA TIC LIFE CRITERIA

4.6 giL

Phenol

Appendix II. Page 25

APPENDIX II. Toxic Substances.

ORGANIC CONTAMINATES

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PESTICIDES AND POLYCHLORINATED BIPHENYLS

FRESH WATER AQUA TIC LIFE CRITERIA

CHRONIC TOXICITY

SUBSTANCE

ACUTE TOXICITY

(Jig/L) 2

(Based on fish consumption

ONLY)

units

!..

Liter

NOT TO EXCEED

2.2 ng/L

0.041

0.083

0.84 ng/L

0.59 ng/L

0.001

1.1

0.59 ng/L

Chloropyrifos

DDD

0.0043

DDT

63 ng/L

Polychlorinated Biphenyls

(total PCBs)

0.014

0.17 ng/L

0.95

------.~~

Appendix II. Page 26

Gamma-Hexachloro-cyclo

Hexane (Lindane)

2.4

Chlordane

DDE

HUMAN HEALTH

CRITERIA 1

APPENDIX II. Toxic Substances.

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ORGANIC CONTAMINATES

VOLATILE AROMATIC HYDROCARBONS

FRESH WATER AQUA TIC LIFE CRITERIA

HUMAN HEALTH

CRITERIA 1

(Based on fish consumption

SUBSTANCE

Ethylbenzene

Toluene

~~----~---

L...-.-----

----

Benzene

ACUTE TOXICITY

(J,lg/L) 2

CHRONIC TOXICITY

ONLY)

units / Liter

NOT TO EXCEED

71J,lg/L

29 mg/L

~-.------~.--.

~----

200 mg~L

ORGANIC CONTAMINATES

CHLORINATED BENZENES

HUMAN HEALTH

CRITERIA 1

FRESH WATER AQUATIC LIFE CRITERIA

SUBSTANCE

Dichlorobenzene (1,3- or 1,4-

(Based on fish consumption

ONLY) .

CHRONIC TOXICITY

Cug/L) 2

ACUTE TOXICITY

(,ug/L) 2

units / Liter

NOT TO EXCEED

2.6 mgIL

---------.-~-----------

Appendix II. Page 27

...1,2,4-Trichlorobenzene

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_lIexachlorobenzene

APPENDIX II. Toxic Substances.

0.77 ngIL

0.94 ing/L

ORGANIC CONTAMINATES

VOLATILE HALOGENATED ALKANES

FRESH WATER AQUA TIC LIFE CRITERIA

CHRONIC TOXICITY

units / Liter

NOT TO EXCEED

360 J-lg/L

470 J-lg/L

34 J-lg/L

---

46 J-lg/L

99,ug/L

----

1.6 mg/L

---

11 J-lg/L

Chlorofonn

---

Bromofonn

Chlorodibromomethane

Dichlorobromomethane

Tetrachloroethane

1,2-Dichloroethane

Methylene Chloride

ACUTE TOXICITY

Trichloroethane (1,1,1- or

1,1,2- or mixtures thereof)

----

-----

(Based on fish consumption

ONLY)

(,ug/L) 2

Cug/L) 2

SUBSTANCE

HUMAN HEALTH

CRITERIA I

Appendix II. Page 28

42,ug/L

CHRONIC CRITERIA FOR TOTAL AMMONIA IN mg NITROGEN / L WHEN EARLY FISH LIFE

STAGES ARE PRESENT

TEMPERATURE, °C

6.5

6.6

6.7

6.8

6.9

7.0

7.1

7.2

7.3

7.4

7.5

7.6

7.7

7.8

7.9

8.0

8.1

8.2

8.3

8.4

8.5

8.6

8.7

8.8

8.9

9.0

6.67

6.57

6.44

6.29

6.12

5.91

5.67

5.39

5.08

4.73

4.36

3.98

3.58

3.18

2.80

2.43

2.10

1.79

1.52

1.29

1.09

0.920

0.778

0.661

0.565

0.486

6.67

6.57

6.44

6.29

6.12

5.91

5.67

5.39

5.08

4.73

4.36

3.98

3.58

3.18

2.80

2.43

2.10

1.79

1.52

1.29

1.09

0.920

0.778

0.661

0.565

0.486

6.46

6.36

6.25

6.10

5.93

5.73

5.49

6.06

5.68

5.33

4.99

5.97

5.59

5.25

4.92

5.86

5.49

5.15

4.83

5.72

5.36

5.03

4.72

5.21

5.56

4.89

4.58

5.37

5.04

4.72

4.43

5.15

4.83

4.53

4.25

4.90

4.59

4.31

4.04

4.61

4.33

4.06

3.80

4.30

4.03

3.78

3.55

3.97

3.72

3.49

3.27

3.61

3.39

3.18

2.98

3.05

2.86

2.68

3.25

2.89

2.71

2.54

2.38

2.24

2.54

2.38

2.10

2.07

1.94

1.82

2.21

1.91

1.79

1.68

1.57

1.63

1.53

1.43

1.34

1.22

1.14

1.30

1.39

1.10

1.03

0.97

1.17

0.990 0.928 0.870 0.816

0.836 0.784 0.735 0.689

0.707 0.663 0.622 0.583

0.601 0.563 0.528 0.495

0.513 0.481 0.451 0.423

0.442 0.414 0.389 0.364

5.22

4.92

4.59

4.23

3.85

3.47

3.09

2.71

2.36

2.03

1.74

1.48

1.25

1.06

0.892

0.754

0.641

0.548

0.471

4.68

4.39

4.61

4.32

4.52

4.24

4.42

4.14

4.03

4.30

4.15

3.89

3.98

3.73

3.78

3.55

3.57

3.34

3.32

3.12

3.06

2.87

2.79

2.62

2.51

2.36

2.23

2.10

1.96

1.84

1.71

1.60

1.47

1.38

1.26

1.18

1.00

1.07

0.906 0.849

0.765 0.717

0.646 0.606

0.547 0.512

0.464 0.435

0.397 0.372

0.342. O.~£O

301

4.12

3.86

3.62

3.39

4.05

3.80

3.56

3.34

3.98

3.73

3.50

3.28

3.89

3.64

3.42

3.20

3.78

3.54

3.32

3.11

3.65

3.42

3.21

3.01

3.50

3.28

3.08

2.88

3.33

3.12

2.92

2.74

3.13

2.94

2.76

2.58

2.92

2.74

2.57

2.41

2.69

2.53

2.22

2.37

2.30

2.02

2.45

2.16

2.21

2.07

1.94

1.82

1.96

1.84

1.73

1.62

1.73

1.62

1.52

1.42

1.50

1.41

1.32

1.24

1.29

1.21

1.14

1.07

1.04 0.973 0.912

1.11

0.941 0.882 0.827 0.775

0.796 0.747 0.700 0.656

0.672 0.630 0.591 0.554

0.568 0.532 0.499 0.468

0.480 0.450 0.422 0.396

0.408 0.383 0.359 0.336

0.349 0.327 0.306 0.287

0.300 0.281 0.264 0.247

3.18

3.13

3.07

3.00

2.92

2.82

2.70

2.57

2.42

2.26

2.08

1.90

1.71

1.52

1.33

1.16

1.00

0.855

0.727

0.615

0.520

0.439

0.371

0.315

0.269

0.232

2.98

2.94

2.88

2.82

2.74

2.64

2.53

2.41

2.27

2.12

1.95

1.78

1.60

1.42

1.25

1.09

0.94

0.802

0.682

0.577

0.487

0.411

0.348

0.296

0.253

0.217

2.80

2.75

2.70

2.64

2.57

2.48

2.38

2.26

2.13

1.98

1.83

1.67

1.50

1.33

1.17

1.02

0.879

0.752

0.639

0.541

0.457

0.386

0.326

0.277

0.237

0.204

2.62

2.58

2.53

2.47

2.41

2.32

2.23

2.12

2.00

1.86

1.72

1.56

1.41

1.25

1.10

0.96

0.824

0.705

0.599

0.507

0.428

0.362

0.306

0.260

0.222

0.191

2.46

2.42

2.37

2.32

2.25

2.18

2.09

1.99

1.87

1.74

1.61

1.47

1.32

1.17

1.03

0.897

0.773

0.661

0.562

0.475

0.401

0.339

0.287

0.244

0.208

0.179

Isl

APPENDIX III. A.

APPENDIX m. Page -29-

APPENDIX m. B..

CHRONIC CRITERIA FOR TOTAL AMMONIA IN mQ: NITROGEN / L

WHEN EARLY FISH LIFE STAGES ARE ABSENT

TEMPERATURE,OC

15 1

6.5

10.8

10.1

9.51

8.92

8.36

7.84

7.35

6.89

6.46

6.6

10.7

9.99

9.37

8.79

8.24

7.72

7.24

6.79

6.36

6.7

10.5

9.81

9.20

8.62

8.08

7.58

7.11

6.66

6.25

6.8

10.2

9.58

8.98

8.42

7.90

7.40

6.94

6.51

6.10

6.9

9.93

9.31

8.73

8.19

7.68

7.0

9.60

9.00

8.43

7.91

7.41

7.1

9.20

8.63

8.09

7.58

7.11

7.2

8.75

8.20

7.69

7.21

6.76

7.3

8.24

7.73

7.25

6.79

6.37

7.4

7.69

7.21

6.76

6.33

5.94

7.5

7.09

6.64

6.23

5.84

7.6

6.46

6.05

5.67

7.7

5.81

5.45

5.11

7.8

5.17

4.84

4.54

7.9

4.54

4.26

8.0

3.95

3.70

8.1

3.41

5.93

6.95

6.52

6.11

5.73

6.67

6.25

5.86

5.49

6.34

5.94

5.57

5.22

5.97

5.60

5.25

4.92

5.57

5.22

4.89

4.59

5.13

4.51

4.23

Isl

6.33

5.32

4.99

4.68

4.38

4.11

3.85

4.79

4.49

4.21

3.95

3.70

3.47

4.26

3.99

3.74

3.51

3.29

3.09

3.99

3.74

3.51

3.29

3.09

2.89

2.71

3.47

3.26

3.05

2.86

2.68

2.52

2.36

3.19

2.99

2.81

2.63

2.47

2.31

2.17

2.03

2.91

2.73

2.56

2.40

2.25

2.11

1.98

1.85

1.74

2.47

2.32

2.18

2.04

1.91

1.79

1.68

1.58

1.48

2.09

1.96

1.84

1.73

1.62

1.52

1.42

1.33

1.25

4.81

8.4

6.75

8.3

7.20

8.2

0-7

5.48

1.77

1.66

1.55

1.46

1.37

1.28

1.20

1.13

1.06

8.6

1.49

1.40

1.31

1.23

1.15

1.08

1.01

0.951

0.892

8.5

8.7

1.26

1.18

1.11

1.04

0.976

0.915

0.858

0.805

0.754

8.8

1.07

1.01

0.944

0.885

0.829

0.778

0.729

0.684

0.641

8.9

0.917

0.860

0.806

0.756

0.709

0.664

0.623

0.584

0.548

9.0

0.790

0.740

0.694

0.651

0.610

0.572

0.536

0.503

0.471

At or above 15°C the chronic criterion is the same as that in Appendix m. A.

APPENDIX m. Page -30-

APPENDIX lli. C.

COLDWATER DESIGNATED

WATER BODY

W ARMWATER DESIGNATED

WATER BODY

6.S

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

7.0

24.1

7.1

22.0

7.2

19.7

7.3

17.5

7.4

15.4

7.S

13.3

7.6

11.4

17.0

7.7

9.65

14.4

7.8

8.11

12.1

6.77

10.1

5.62

8.40

4.64

6.95

3.83

5.72

3.15

4.71

2.59

3.88

8.S

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

8.3

8.4

Isl

36.1

32.8

29.5

26.2

8.0

8.2

39.1

7.9

8.1

TOTAL AMMONIA, ACUTE CRITERIA, (mg NitrogenlL)

APPENDIX lli. Page -31-

23.0

19.9

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