APPENDIX A 

Water Quality Standards Regulation 

WATER QUALITY STANDARDS HANDBOOK 

SECOND EDITION 
Appendix A - Water Quality Standards Regulation 

Water Quality Standards Regulation 

(40 CFR 131; 48 FR 51405, Nov. 8, 1983; Revised through July 1, 1991; amended at 

56 FR 64893, Dec. 12, 1991; 57 FR 60910, Dec. 22, 1992) 

TITLE 40-PROTECTION 

OF ENVIRONMENT 

CHAPTER 1-ENVIRONMENTAL 

PROTECTION AGENCY 

SUBCHAPTER D-WATER 

PROGRAMS 

PART 131-WATER QUALITY 

STANDARDS 

Authority: 33 U.S.C [25] et seq. 

[Amended at 56 FR 64893. Dec. 12, 

1991; 57 FR 60910, Dec. 22, 1992] 

Subpart A -General Provisions 

see 

131.1 Scope 

131.2 Purpose 

131.3 Definitions 

131.4 State Authority 

131.5 EPA Authority 

131.6 Minimum requirements for water 

quality standards submission. 

131.7 Dispute resolution mechanism. 

131.8 Requirements for Indian Tribes to be 

treated as States for purposes of 

water quality standards. 

Subpart D- Federally Promulgated Water Quali- trial. and other purposes including navigaty Standards. tion. 

131.31 Arizona. 

131.33 - 131.34 [Reserved] 

Such standards serve the dual purposes of 

131.35 Colville Confederated Tribes Indian establishing the water quality goals for a 

131.36 Toxics criteria for States 

Reservation specific water body and serve as the reguSubpart A - General Provisions 

latory basis for the establishment of wa- not complying with CWAs 303(c)(2)(B) 

ter-quality-based treatment controls and 

§131.1 scope. 

Thus part describes the requirements 

and procedures for developing, reviewing, 

revising and approving water quality standards by the States as authorized by section 303(c) of the Clean Water Act The 

reporting or recordkeeping (information) 

provisions in this rule were approved by 

the Office of Management and Budget under 3504(b) of the Paperwork Reduction 

Act of 1980, U.S.C. 3501 et seq. (Approval number 2040-0049). 

strategies beyond the technology-based 

levels of treatment required by sections 

301(b) and 306 of the Act. 

§131.2 Purpose 

Subpart B - Establishment of Water Quality 

Standards 

131.10 Designation of uses. 

131.11 Criteria 

131.12 Antidegradation policy 

131.13 General policies 

Subpart C - Procedures for Review and Revision 

of Water Quality Standards 

131.20 State review and revision of water 

quality standards. 

131.21 EPA review and approval of water 

quality standards. 

131.22 EPA promulgation of water quality 

standards. 

A water quality standard defines the 

water quality goals of a water body, or 

portion thereof, by designating the use or 

uses to be made of the water and by setting criteria necessary to protect the uses. 

States adopt water quality standards to 

protect public health or welfare, enhance 

the quality of water and serve the purposes of the Clean Water Act (the Act) 

“Serve the purposes of the Act” (as defined in sections 101(a)(2) and 303(c) of 

the Act) means that water quality standards should, wherever attainable. pro 

vide water quality for the protection and 

propagation of fish. shellfish and wildlife 

and for recreation in and on the water and 

take into consideration their use and value 

of public water supplies, propagation of 

fish, shellfish, and wildlife, recreation in 

and on the water, and agricultural, indus- 

§131.3 Definitions. 

(a) The Act means the Clean Water 

Act (Pub. L 92-500, as amended. (33 

U.S.C. 1251 et seq.)) 

(b) Criteria are elements of State water 

quality standards, expressed as constituent concentrations. levels. or narrative 

statements. representing a quality of water that supports a particular use. When 

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

(c) Section 304(a) criteria are developed by EPA under authority of section 

304(a) of the Act based on the latest scientific information on the relationship 

that the effect of a constituent concentration has on particular aquatic species 

and/or human health. This information is 

issued periodically to the States as guidance for use in developing criteria. 

(d) Toxic pollutants are those pollutants listed by the Administrator under 

section 307(a) of the Act. 

(c) Existing uses are those uses actually attained in the water body on or after 

November 28, 1975, whether or not they 

are included in the water quality standards. 

(f) Designated uses arc those uses specified in water quality standards for each 

(9/14/93) 
IOl(g) and 518(a) of the Clean Water 

A~I. uatcr qualIly standards shall not bc 

construed to supcrscdcr or abrogate rights 

to quantities of water 

(b) States (as defined In 5131 3) may 

ISSUC ccrlifications pursuant IO the rcqulrcmcnts of Clean Water Act section 

40 I. Revisions adopted by States shall be 

applicable for use in issuIng State ccrtihcations consistent with the provisbons of 

$131.21(c). 

(c) Where EPA determines that a 

Trlbc qualifies for treatment as a State 

fur purposes of uarcr quality standards. 

rhc Trlbc Ilkcwlsc ~UJII~IC~ fur treatmen 

d\ .I Sl.iic for purpox~ d ccrlificalions 

cunductcd under Clcun U’atcr A~I scc(lon 

401 

($131 4 rcblscd at 56 FR 64893. kc I?. 

;99t1 

$131.5 EPA authority. 

]§I 31.5 former paragraphs (a)-(c) rcdesignated as new (a) and (a)(l)-(a)(5) 

at 56 FK b4893, I>cc 12, IVY t] 

(a) Lndcr scci~on 303(c) or the Act, 

L:PA IS to rcvicu and to approve or disap 

prove State-adopted water qualIt standdrds. The rcvicw involves a dctcrmtnalwn of: 

(I) Whether the Stale has adopted watcr uses which arc conslstcnt with the rcquircmcnts of the Clean Water Act; 

(2) Whether the state has adopted critcria that protect the designated water 

uses; 

(3) Whether the State has followed its 

legal proccdurcs for revising or adopting 

\randards; 

(4) Whether the State standards which 

do not include the uses specified in section 

lOI(a)(?) of the Act arc based upon appropriate tcchmcal and vxntific data and 

dnalyscs. and 

(5) Whcthcr the SI~IC submission 

mcc~s the rcquircmcnts lncludcd In 

51 31 6 of this part If EPA dctcrmlncs 

that State water qua111y standards arc 

c‘onslstcnt with the factors listed in 

paragraphs (a) through (c) of this section, 

EPA approves the standards EPA must 

dlsapprovc the State water quality standards under scctlon 303(c)(4) of the Act, 

If S~atc adopted standards arc not consistent with the factors Ilstcd In paragraphs 

Ia) through (c) of this section EPA may 

also promulgate a new or revised standard 

u hcrc ncccssary to meet the rcquircmcnts 

uf the Acr 

(b) Scctlon 401 of the Clean Water Act 

authorlxs EPA 10 ISNC ccrtlficatlons pursuant IO the rcquircmcnts of scctlon 401 

In an) case whcrc a State or Interstate 

agency has no authority for IssuIng such 

ccrtihcations 

[§I31 S(b) added at 56 FK 64893. DCC 

12. 19911 

5131.6 Minimum rquircmcnts for waler 

quality standards submission. 

The following clcmcnts must be Includcd In each State’s water qualIt> standard\ 

,ubmltrcd IO tlPA fur rcvlcw 

(a) Use dcsignJllans c‘onsrslcnt with the 

pruvlblons of scctlonh 101(a)(?) and 

303(c)(!) of the Act 

(b) Methods used and analyses conducted to support water quality standards 

rcvlsions 

(c) Water qualit) criteria sutfisicnl tu 

protect the designated uses 

(d) An antidegradation policy consis1cnf ~lth 5131 I? 

(cj Ccrlrficstlon by the Stare Attornc) 

Gcncral or other appropriarc legal authorII> ullhln the State that 1hc uatcr qualit) 

btandards were duly adopted pursuant IO 

Slalc law. 

(f) Gcncral InformatIon uhlch will aId 

I~IC Agency In dctcrmlnlng the adequacy 

of the sclcntlfic basis of the standards 

which do not include the uses specified In 

scctlon 101(a)(2) of the Act as well as 

Information on gcncral polrc~cs applicable 

to State standards which may affect thclr 

application and Implcmcntallon. 

$131.7 Dispute resolution mechanism. 

(aj Where disputes between Slates and 

lndlan Tribes arIse as a result of dllfcrrng 

water quality standards on common bodICS of water. the lead EPA Regional Administrator. as dctcrmlncd based upon 

Ok18 circular A-105. bhall be rcsponslblc 

rar acting In accordance with the pro\)- 

wns of this scstlc)n 

(bj The Regional Administrator shall 

attempt to resolve such disputes where 

(I) The dlffcrcncc In water qualIly 

standards rcsLI1b in unreasonable conscqucnccs; 

(21 The dispute is bcrwccn a State (a, 

defined in $131 3(~) but cxclu~i~c of JII 

Indian Trlbcsj and a Trdx which EPA 

has dctcrmlncd quahfics to be trcatcd as a 

State ror purposes d waler quall1> slandardh. 
(3) A reasonable cfTort to rcs~lvc the 

dtsputc without EPA involvement has 

ken made. 

(4) The requested relief IS consistent 

with the provistons of the Clean Water 

Act and other relevant law. 

(5) The dttfcrtng S~atc and Trtbal watcr quality star&rds have been 3dopicd 

pursuant to SI~IC and Tribal law and ap 

proved by EPA: and 

(6) A valtd wrtttcn request has been 

submitted by ctthcr the Tribe or the 

Slate. 

(c) Either a State or 3 Tribe may rcquest EPA to resolve any dtsputc whtch 

s3ttstics the crt1crt3 of paragraph (b) of 

1hts sectton Wrtttcn requests for EPA tn. 

volvcmcnt should bc submtttcd to the lead 

Regional Admintstrator and must includc 

(I) A concise statement of the unrcasonablc consequences that arc alleged to 

have arisen because of differing water 

quality standards; 

(2) A concise dcxriptton of the actions 

which have been taken to resolve the dispute wIthout EPA Involvement; 

(3) A cuncix tndtcatJon of the w31cr 

qualtty st3ndards provtston which h3s rcsultcd in the alleged unreasonable conscquences; 

(4) Factual data to support the alleged 

unreasonable conscqucnccs. and 

(5) A statement of the rclicf sought 

from the alleged unreasonable conscqucnccs. 

(d) Where. in the Rcgmnal Admtnistra- 

(or’s Judgmcnl. EPA tnvolvcmcnt is ap 

propriatc based on the factors of paragraph (b) of thts sectton. the Regional 

Admtntstrator shall. wtthtn 30 days, nottfy the parties in wrtttng that he/she IS 

lntttattng 3n EPA dtsputc rcsolutton actton and solictt thctr wrtltcn rcsponsc. The 

Rcgronal Admintstrator shall also make 

reasonable efforts to ensure that other interested indivtduals or groups have notrcc 

of this action Such efforts rh3ll Include 

but not bc limited to the following. 

(I) Wrtttcn notice to rcsponsiblc Trrbal 

and State Agcnctcs, and other affected 

Federal Agcuctcs. 

(2) Koticc CO the specific Individual or 

entity that 1s alleging that an unrcasonable consequence 1s resulting from diffcrmg standards having been adopted on a 

common body of waler. 

(3) Public ntnlc‘c tn Ioc.tI ncw\p.rpcr\. 

r&to. 3nd iclcvt~lon. 35 appraprtJtc, 

(4) Publication in trade Journal ncwsletters. and 

(5) Other means as appropriate 

(e) If in accordance with appltcablc 

State and Tribal law an Indian Trtbc and 

State have entered into an agreement that 

resolves the dispute or cstabltshcs 3 mcch- 

;IIIIV~ for rcsolvtnp a dtrpu1c. EI’A rh.111 

dcfcr to this agrccmcnt whcrc II IS con\t\- 

tent with the Clean Water ACI and whore 

11 has been approved by EPA. 

(fj EPA dispute resolution actions sh3ll 

bc consistent with one or a combination of 

the following options. 

(I) ,bfrdiorion The Rcgtonal AdmIntstrator may appoint a mcdtator IO mediate 

the dispute. Mcdrators sh3ll be EPA cmployccs, employees from other Fcdcral 

agencies. or other tndividuals with appropriate qualifications. 

(ij Where the State and Tribe agree to 

parttcipatc in the dispute rcsolutton process. mediation with the intent to cstab 

lish Tribal-State agreements. conststcnt 

with Clean Water Act scctlon 518(d) 

shall normally bc pursued as a first cfforl. 

(ii) Mediators shall act 3s neutral 

facllttators whose function IS IO cncauragc 

cornmuntcation 3nd ncgotratton bc~uccn 

all parties to the dispute. 

(lit) Mediators may establish advisory 

panels, to consist in part of representa. 

tivcs from the affected parties, to study 

the problem and recommend 3n approprt31~ solulron. 

(iv) The procedure and schedule for 

mediation of individual disputes shall bc 

determined by the mediator In consult;ltion with the parties. 

(v) If formal public hcarlngs arc held In 

conncctton with the acttons tJkcn under 

thts paragraph. Agency rcqutrcmcnts ~1 

40 CFR 25.5 shall bc followed. 

(2) .4rhrrorron. Where the parttcs to 

the dlsputc agree to parttctpatc In the dtsputt resolution process. the Regional Admtnistrator may appoint an arbilrcltor or 

arbitration panel to arbitrate the drsputc 

Arbitrators and panel members shall be 

EPA employees. employees from o1hcr 

Federal agcnctcs. or other tndtvlduals 

with appropriate qualificattons. The Rcgional administrator shall sclcct as arbttr3tors and arbrtration panel members tndrvrduals who arc agreeable to all parties. 

arc knowledgeable concerning the rcqutrcmcnts of the water qualtty standard> 

prc,gr;im. have ;I b;l\tc undcrst;tnd~np of 

the pol1t1~11 and cconomtc tntcrchts of 

Tribes and States tnvolvcd. and arc cxpcctcd to fulfill the duttcs faIrI> and emparliall! 

(I) The arbitrator or arbttrstton p3ncl 

shall conduct one or murc prtv3tc or pub 

IIC: mccttnps ulth the pJr1tcs .IIIJ ac‘~tvcly 

u)II~I~ tniormatton prrt.ttntnp tr) the cflcita oi Jt!fcrLng w.iIcr q(u,tl~ty prnul rc’- 

qutrcmcnts on upslrcam .tnJ Jc)wnslrcdm 

dtschdrgcrs. cumpdrattrc rtaks IU public 

health and the cnvtronmcnt. cconumtc lmpacts. present and hrsiortcal water uses. 

the qu311ty of the w3tcrs sub)ccl 10 such 

s13ndards. and other factors rclcvanl IO 

the dtsputc such as u hclhcr prqwscd wu3- 

tcr qu~lil) crttcri3 3rc more stringent 

:hdn nccosclry to support dcstgnatcd uses. 

more strtngcnt than natural bxkground 

u3tcr qu3l1ty or uhcthcr dc\tgnatcd uses 

arc rcasonabir gt\cn n.ttur.tI background 

u,itcr quality 

(II) Folloutng cclnstdcr3ttLm of relevant 

fxtors 3~ dcfincd In pdr.rgr3ph (f)(2)(1) 

of this section. the arbttrator or 3rbttratron panel shall have the aurhortty and 

roponstbtlrty to provtdc 311 prlrtics ;Ind 

the Regional ,\dmint,tr~tor utth a wrrtten reiummcndatron fur rcsL)lutltin of the 

dtsputc Arbltralwn pncl rc~clmrncndattons shall. In gcncrdl. be rcachcd by majortty vole. tioucvcr. uhcrc the parties 

agree to btndtng arbttratron. or where rcqutrcd by the Rcg~t)n~l Admtntstrator. 

rccernrncnddtlons oi \uch .Irhltrcltlon 

panel5 m.ty bc undntrncru~ dcirstuns. 

W’hcrc btndlng or non-btndtng arbttr3tmn 

panels c3nnot reach .I undntntous rcc’ommcnddlxm aflcr a rcasan3blc period of 

ttmc. the Kegtonal Admtnrktrator may drrcct the panel IC, ISSUC 3 non-btndtnp dcctrton by rnaJortty vole 

(III) The arbitrator or arbttrdtton panel 

mcmbcrs may consult utth FPA’s Office 

of Cicncral Counsel on legal 15sucs. but 

otherwIse bhall h3bc nab r’l />urrz communtc3ttons pcrtatntng II, the drsputc. Fcdcr31 employee+ u ho arc 3rhltr,ttor\ or arbrtratton panel mcmbcrs sh.ill be ncutr3l 

and shull not bc prcdtspoccd for or agdtnst 

the poslrton of any dtsputtng p:lrty based 

on uny f,cdcral Trust rcsponstbtltttcs 

which thctr cmploycrs may h3vc utth rcspcct to the Tribe. In 3ddttron. arbttrators 

c)r arbttratmn p3ncl mcmbcrs who arc 

f.cdcral employees shall XI mdcpcndcntly from the norm31 tlrr.!rchy ut1hin thctr 

rigcncy 
panel’s rccommcndation unless they voluntarily cntcrcd into a binding agreement 

IO do so 

(v) If a party IO the dispute believes 

that the arbitrator or arbitration panel 

has recommended an action contrary to or 

InconsIstent with Ihc Clean Water ACI. 

the party may appeal the arbitrator’s rccommcndation IO the Regional AdmintsIrator. The request for appeal must be in 

writing and must include a description of 

the statutory basis for altering the arbitrator’s recommendation. 

(vi) The procedure and schedule for arbItration of individual disputes shall be 

dctcrmincd by the arbitrator or .rrbiIraIion panel in consultation with parties 

(vii) If formal public hcartngs arc held 

in connection with the actions taken undcr this paragraph Agency rcquircmcnts 

at 40 CFR 25 5 shall bc followed 

(3) Dispute Rrsolutron De/oulr Procedure Where one or more parties (as dcfined in paragraph (g) of this sectton) rcfuse IO participate in either the mediation 

or arbitration dispute resolution proccsses. the Regional Administrator may ap 

point a single oflictal or panel lo review 

available Information pcrtatning IO the 

dispute and IO issue a written rccommcndatton for resolving the dispute Review 

officials shall be EPA employees, cmployccs from other Federal agcncics. or other 

indtviduals with appropriate qualilicaItons. Review panels shall include appropriate members lo be selected by the Rcgional Administrator in consultation with 

the parttcipating parties. RccommcndaItons of such review officials or panels 

shall, IO the extent possible given the lack 

of participation by one or more parties. be 

reached In a manner identical to that for 

arbitration of disputes spcctfied in 

paragraphs (f)(2)(1) through (f)(2)(vii) of 

this sectton 

(g) Dejijin~frons For Ihc purposes of this 

scclion 

( I ) Dlspufr Kesolu/ron Mvchanrsnt 

means Ihc EPA mechanism cstablishcd 

pursuant IO Ihc rcqutrcmcnts of Clean 

Water Acl section 518(c) for resolving 

unreasonable consequences that arise as a 

result of differing water quality standards 

that may be set by States and Indian 

Tribes located on common bodies of ualcr. 

(2) Parfrrs IO a State-Tribal dispute Include the State and the Tribe and may, at 

the dtscretton of the Regional AdministraIor. include an NPDES permittee. citizen. 

citilcn group. or other afcctcd entity 

[§I 31 7 added (II 56 FR 64893. Dee 12. 

I9911 

$131.8 Requirements for Indian Tribes IO 

be treated as Stales for purposes of 

water quality standards. 

(a) The Regional Administrator. as dcIcrmincd based on OMB Circular AIOS. 

may treat an Indian Tribe as a State for 

purposes of the water quality standards 

program if the Tribe meets the following 

criteria. 

(I) The Indian Tribe IS rccognircd by 

Ihc Sccrctary of Ihc Interior and meets 

the definitions in 5131 3(k) and (I). 

(2) The Indian Tribe has a governing 

body carrying out substanttal govcrnmcnIJI duties and powers. 

(3) The water quality standards pro 

gram IO be administcrcd by the Indian 

Tribe pertains IO the management and 

protection of water resources which are 

within the borders of the Indian rcscrvaIion and held by the Indian Tribe. within 

the borders of the Indian reservation and 

held by the United States in trust for Indians, within the borders of the Indian 

reservation and held by a member of the 

Indian Tribe if such property interest IS 

subject IO a trust restriction on alienation, 

or otherwise within the borders of the Indian reservation, and 

(4) The Indian Tribe IS reasonably cxpcctcd IO be capable. in the Regional Administrator’s judgment. of carrying out 

the functions of an cfTecIivc water quality 

standards program in a manner consistent 

with the terms and purposes of the Acr 

and applicable regulations 

(b) Rcqucs~s by Indian Tribes for Ireatmcnl as Stales for purposes of water quality standards should bc submitted IO the 

lcad EPA Regional Administrator The 

application shall include the folIowIng information 

( I ) A statcmcnt that the Tribe IS rccognircd by Ihc SccrcI.try of the Interior 

(2) A descriptive statcmcnt dcmonstrating that the Tribal governing body is 

currently carrying out substantial govcrnmental duties and powers over a defined 

area The statement shall. 

(i) Describe the form of the Tribal government; 

(ii) Describe the types of governmental 

functions currently performed by the 

Tribal governing body such as, but not 

limited IO. the cxerctsc of police powers 

affecting (or relating IO) the health. safcI). and welfare of the alfcctcd population. 

taxation. and the cxcrctsc of Ihc power of 

cmtnent domain; and 

(III) Identify the source of the Tribal 

govcrnmcnt’s authortry IO carry out Ihc 

govcrnmcnlal functions currently being 

performed. 

(3) A dcscrtptivc statement of the Indian Tribe’s authority IO regulate water 

quality. The statement shall include: 

(I) A map or legal dcscrtption of the 

area over which the Indian Tribe asserts 

authority IO regulate surface water qualiry. 

(II) A statement by the Tribe‘s legal 

counsel (or equivalent offtctal) which dcscrtbcs the basis for the Tribes assertion 

of .ruIhoriIy. 

(tit) A copy of all documents such as 

Tribal constiIu:Ions. by-laws, charters. exCCUIIVC orders. codes. ordinances. and/or 

resolutions which support the Tribe’s assertion of authority; and 

(iv) an identification of the surface waIcr for which the Tribe proposes IO cstabltsh water quality standards 

(4) A narrative statement describing 

the capability of the Indian Tribe IO 

administer an C~~CCIIVC water quality standards program The narrative statement 

shall include: 

(i) A description of the Indian Tribe’s 

previous management cxpcricncc including. but not limited IO. Ihc administration 

of programs and services authorized by 

the Indian Self-Determination and Education Assistance Act (2s U.S.C. 450 cr 

scq ). the Indian Mineral Development 

ACI (25 U SC 2101 PI seq ). or the Indtan Sanitation Facility Construction ActivIIY Act (42 U.S.C. 2004a); 

(ii) A list of existing environmental or 

public health programs administered by 

the Tribal governing body and copies of 

rclatcd Tribal laws. ~~IICICS. and rcgulalions; 

(III) A description of the entity (or cntiIICS) which exercise the exccut~ve. IegislaIive. and judicial functions of the Tribal 

govcrnmcnl; 

(IV) A description of the cxlstlng or pro 

posed. agency of the Indian Tribe which 

will assume primary responsibility for csIablishing. reviewing, implementing and 

revising water quality standards; 

(v) A description of the technical and 

administrative capabilities of the staff IO 
admintster and manage an elfectivc water 

qualtty standards program or a plan 

which proposes how the Tribe will acquire 

additional administrative and technical 

expertise The plan must address how the 

Tribe will obtain the funds to acquire the 

adminrstrativc and technical expertise. 

(5) Additional documentation required 

by the Regional Administrator which, in 

the judgment of the Regional Administrator. is necessary to support a Tribal rcquest for lrealmenl as a Stale. 

(6) Where the Tribe has previously 

qualified for treatment as a State under a 

Clean Water Act or Safe Drinking Water 

Act program, the Tribe need only provide 

the rcqutrcd informatton which has not 

been submitted in a previous treatment as 

a State application. 

(c) Procedure for processing an Indian 

Trtbc’s applicatton for treatment as a 

Slate. 

(I) The Rcgtonal Administrator shall 

process an application of an Indian Tribe 

for treatment as a State submitted pursuant IO 131.8(b) In a timely manner He 

shall promptly notify the Indian Tribe of 

receipt of the applicatton. 

(2) Within 30 days after receipt of the 

Indian Tribe’s application for treatment 

as a State. the Regional Administrator 

shall provtdc approprtatc notice. Notice 

shall 

(i) lncludc Information on the sub 

stance and basis of the Tribe’s assertion of 

authority IO rcgulatc the quality of rcscrvation waters; and 

(it) Bc provided IO all appropriate govcrnmcnlal cnlrlrcs 

(3) The Rcglonal Admintstrator shall 

provtdc 30 days for comments IO be sub 

milted on the Tribal application. Comments shall be limited IO the Tribe’s asscrlion of authority. 

(4) If a Tribe’s asserted authority is 

subject IO a compcttng or conflicting 

claim. the Regional Administrator. after 

consultatton with the Secretary of the Interior, or his designee. and in consideration of other comments received. shall 

determine whether the Tribe has adcquatcly demonstrated that it meets the 

requirements of I3 I .8(a)(3). 

(5) Where the Rcgtonal Administrator 

dctcrmlncs that a Tribe meets the rtquircmcnts of this section. he shall 

promptly provide written notification IO 

the Indian Trlbc that the Tribe has qualified IO bc treated as a State for purposes 

of water quality standards and that the 

Tribe may initiate the formulation and 

adoption of water quality standards ag 

provable under this part. 

[§13l.S added at 56 FR 64893. Dee 12, 

I9911 

Subpart B-Establishment of Water 

Quality Standards 

$131.10 Dtsignrtion of uses. 

(a) Each State must specify appropriate water uses IO be achieved and protcctcd. The classification of the waters of the 

State must take into consideration the USC 

and value of water for public water sup 

plies. protection and propagation of fish. 

shellfish and wildlife, recreation in and on 

the water, agricultural. industrial. and 

other purposes including navigation. In no 

case shall a State adopt waste transport or 

waste assimilation as a designated USC for 

any waters of the United States. 

(b) In designating uses of a water body 

and the appropriate criteria for those 

uses. the State shall take into considcration the water quality standards of downstream waters and shall ensure that its 

water quality standards provide for the 

attainment and maintenance of the water 

quality standards of downstream waters. 

(c) States may adopt sub-categories of 

a use and set the appropriate criteria IO 

reflect varying needs of such sub-catcgorics of uses, for instance. IO differentiate 

between cold water and warm water fisheries. 

(d) At a minimum, uses arc deemed attainable if they can bc achieved by the 

tmposition of ctlluent limits required under sections 301(b) and 306 of the Act 

and cost-effective and reasonable best 

management practices for nonpoinl 

source control. 

(c) Prior IO adding or removing any 

use. or establishing subcatcgorics of a 

use, the State shall provide notice and an 

opportunity for a public hearing under 

5 I 3 I .20(b) of this regulation. 

(f) States may adopt seasonal uses as 

an alternative lo reclassifying a water 

body or segment thereof IO uses requiring 

less stringent water quality criteria If 

seasonal uses are adopted, water quality 

criteria should be adjusted IO reflect the 

seasonal uses, however. such criteria shall 

not preclude the attainment and maintcnancc of a more protective use in another 

season. 

(g) States may remove a designated USC 

which is nor an cxisttng USC. as dcfincd in 

5131 3. or cstabltsh sub-catcgorics of a 

USC If the State can demonstrate that attaining the dcstgnatcd use \s not fcaGblc 

because. 

(I) Naturally occurring poilutant concentrations prevent the attainment of the 

use; or 

(2) Natural, ephemeral. intermittent or 

low flow conditions or water lcvcls prevent 

the attainment of the USC. unless these 

conditions may be compensated for by the 

discharge of sufftcicnt volume of cfllucn: 

dtschargcs wtthout violating State water 

conscrvatron rcqurrcmcnts IO enable uscs 

to bc met. or 

(3) Human caused condtttons or 

sources of pollutton prevent the attainment of the use and cannot bc rcmcdrcd 

or would cause more cnvtronmcntal damage IO correct than IO lcav,c In place: or 

(4) Dams, diverstons or other types of 

hydrologic modifications preclude the attatnmcnt of the USC. and II IS not fcastble 

IO restore the water body IO IIS original 

condttton or IO operate such modrficatron 

In a way that would result In the attainment of !hc use; or 

(5) Physical condttions related IO the 

natural features of the water body. such 

as the lack of a proper substrate, cover. 

Row. depth. pools. riffles. and the like. unrelated IO water qualtty. preclude attainment of aquatic life protection uses; or 

(6) Controls more stringent than those 

required by sections 301(b) and 306 of 

the Act would result in substantial and 

widespread economic and soctal Impact 

(h) States may not rcmovc designated 

uses if 

(I) They arc existing uses. as defined in 

f I3 I .3. unless a use requiring more slringent criteria is added; or 

(2) Such uses will be attatncd by tmplcmcnting effluent limits rcqulrcd under 

sections 301 (b) and 306 of the Act and by 

implementing cost-effective and rcasonable best management practices for 

not-point source control. 

(i) Where existing water quality standards specify designated uses less than 

those which arc presently being attatncd. 

the State shall rcvtsc IIS standards IO rcfleet the uses actually bclng attatncd 

(J) A State must conduct a USC attatnabihty analysts as dcscrtbcd In 8131 3(g) 

whenever. 
(i) The State designates or has dcslg 

natcd uses that do not Include the uses 

tpcclhed In SCCIIO~ lOI(a)(Z) of the Act. 

or 

(2) The Stale wlshcs to rcmovc a dcslgnatcd use that 1s spcclficd In secllon 

101(a)(?) of the Act or to adopt subcatcgw~es of uses spcclltcd In scctlon 

101(a)(2) of the Act which rcqulrc less 

slringcnl crrtcrla. 

(k) A State is not rcqulrcd to conduct a 

UIC’ attalnablllty analj.\ls under this rcgu1.1t1on uhsncbcr dcblgnatlng uses which 

~rtiludc ~ho\c ~pcctftcd In ,cclron 

11)1(.1)(?) of the ACI 

gl31.11 Criteria. 

(.I) Inclusion of pd~uronfs 

( I ) Sratcs muIt adopt those water qual- 

~th crltcrla that protect the dcslgnatcd 

use Such crltcrla must bc based on sound 

tclcntltic rationale and must contain suff”- 

ixnt paramclcrs or cons(Itucnts to proICCI the dcslgnatcd use For waters uith 

multlplc USC dcslgnatcons. the crltcrla 

\hJll rupp)rt the most xnsltlvc use 

(2) Totrt po/luluntr Slalcs mu31 rc- 

\IC* urltcr ~uJIII) d.iLi and informalion 

on (jllrchargcs to Idcntlfj rpccltic uatcr 

\Mnilc\ uhcrc ti,x\c pollutant> may bc ad- 

\cr\cl) allccllnp uJtcr qu.1111y or the attdlnmcnt of the dcblgnatcd uatcr USC or 

uhcrc the Icvcls of IONIC’ pollutants arc at 

.I Ic\cl IO warrant concern and must adopt 

crltcrld for such 10x1~ pollutants appl~cablc to rhc uatcr hod) \ufTiclcnt IO protect 

tbc dc\lgna\cd ux Whcrc ;1 State adopt\ 

n.Irr41I\c crilcri3 for toxic pollulants lo 

prvtcct drblgndlcd ux>. the Stcl~c must 

praldc Inrormalron Idcntif!ing the mcthtJ b> uhlch the SUIC Intends to regulate 

pjlnt c~)urcc dl\chsrgcx of IOXIC pollutants 

(III *dtcr qu,rl~t! Ilmltcd xgmcnts based 

on tuch n.irrdtI\c crlterld Such information rn.1) bc lncludcd as pdrt of the stand.ird\ or mu) bc Included In documents 

gcncrdtcd b:, the Stare In rcsponsc to the 

U’drcr Qua111) I’lJnnlnp and Vanagc- 

~rlcnt Rcgul.illon\ (JO Cl-R p.irt 35) 

(b) I-orm of crltcrI;I In cstabllshing crltcrt.1. Sla~cx should 

(2) k\l.ihll\h nJrratl\c L‘rllcrIJ or critc11.1 b.l\cJ upon blun~~~nltorlng methods 

whcrc numcrlcal crltcrla cannol bc cstab Subpart C-Procedures for Review 

lashed or IO supplement numcTxal crllc- and Revision of Water Quality 

rla Standards 

$131.12 Antidegradrtion policy. 

(a) The State shall develop and adopt a 

statcwldc antldcgradatlon pol~cj and 

Identify the methods for Implcmcntmg 

such polxy pursuant to ttus subpart The 

antldcgradallon policy and implcmcntatlon methods shall. at a mmlmum. bc conmtcnt ulth the following 

(I ) Elrlbtlng Instrcarn ualcr ux\ dnd 

Ihc Icbcl of water qu~l11) nscss>Jry lo protcct the erlstlng uses sh.tll bc malntalnrd 

and protected. 

$131.20 Stat review l d revision of water 

quality standards. 

(2) Where the quality of the waters cxcccd lcvcls necessary to support propagation of fish. shellfish. and wildlife and rccrca(ion In and on the water. that quality 

shall bc maintained and protected unless 

the State finds, after full satisfaction of 

the Intcrgovcrnmcntal coordination and 

public participation provlsrons of the 

State’s continuing planning process, that 

Jlloulng lower uatcr quality is ncccssarj 

10 .iccommodatc impurlunl cconomrc or 

XKI.II dcvclopmcnt In the rlrca In uhlch 

the waters arc located In .IllouInp \uch 

dcgrJd.iliun or loticr ullcr qu~11ly. the 

SI~IC shall absurc \ratcr quality adcqualc 

to protect existing uses fully Further. the 

State shall assure that there shall bc 

achlcvcd the highest statutory and rcgulatory rcqulrcmcnts for all new and cxlstlng 

pomt sources and all cat-ctTcctlvc and 

rcasonablc bcs~ managcmcnl practlccs for 

nonpoinl source control 

(a) Store review. The State shall from 

time IO time, but at least once every three 

years. hold public hearings for the purpose of rcvicwrng applicable water quality 

standards and, as approprlatc. modifying 

Jnd adopting standards Any water body 

xgmcnt with uatcr qudllt) standards that 

do not rncludc the uses spccificd In section 

101(a)(?) of the Act shall bc rc-cxamincd 

cbcry three years IO determine if any new 

Information has become avarlablc If such 

new Information indicates that the uscs 

specified In section 101(a)(2) of the Act 

are attainable, the State shall revise IIS 

standards accordingly. Procedures States 

establish for ldcntrfylng and rcvrcwlng 

water bodies for rcvxw should be incorporated Into their Continuing Planning Pr@ 

ccss 

(b) Publrc parrtcrpa/ron The State 

\hall hold a public hearing fur the purpose 

oT re~xuing water quality standards, In 

accordance with provIsIons of State law, 

EPA’s water quallty management rcgula- 

(ion (40 CFR 130.3(b)(6)) and public 

partlclpation regulation (40 CFR part 

25) The proposed uatcr quality standards revision and supportrng analysts 

bhall bc made available IO the public prior 

I\) \hc hearing 

(3) Where high qualit) udtrrs c‘onstlIUIC an outstanding National resource, 

such as uatcrs of Katlonal and Slate 

parks and wlldllfr refuges and waters of 

cxccplronal rcctcalWUl or ecological slgnificance. that water quality shall be 

malntalncd and protected 

(4) In those casts uhcrc potential water quahty Impairment associated with a 

thermal discharge I) lnvolvcd. the antldcpradatlon pol~c) and Implcmcntlng 

method shall bc consistent ulth xctlon 

3 I6 of t hc ACI 

(c) Subntrrrol ro EPA The State shall 

\ubmlt the results of the review. any sup 

porting analysis for the USC attainability 

analysis. the methodologies used for siteipccific crltcria development. any general 

polrcrcs appllcablc IO waler qua111y standards and any rcvlslons of the standards 

to the Rcgronal Admlnlstrator for review 

and approval, within 30 days of the final 

State action to adopt and ccrtily the rcb lscd standard. or if no rcvIslons arc made 

JS a result of the rcvicu. ulthln 30 days of 

the complclion of the rcvlcu 

$131.13 General policies. 

$131.21 EPA rebien and approval of water 

quality standards. 

Sl;l~c\ may. JI thclr dlscrctlon. Include 

In thclr SUIC brandards. pol~c~cs gcncrall) 

JlTcctlng thclr appllcatlon and Implcrncntdtton. such as mixing lone\. IOU flous 

and variances Such pul~c~cs arc subJrc1 IO 

f’P4 rcbleu Jnd approral 

la) After the Stale submits IIS officially 

Jdopted rcvlslons. the Rcgronal Admtnlstrator shall either 

(I) Notify the SIJIC ulthln 60 days 

that the rcvislons arc approved. or 

(2) Notify the State uithln 90 days 

that the revlslons arc dlsdpprovcd Such 
‘~~oI~~~~IIwI of dlbapproval shall spcc~f) 

the changes nccdcd IO ashurc compllancc 

with the rcqulrcmcntb UC the Acl And this 

rcgulatlon. and \h.lll caplaIn why the 

State st.lndJrd I\ nol In compllancc wllh 

such rcquircmcnls Any new or rcvlscd 

State standard muhr be accompanxd by 

some type of supportIng analysis 

(b) The Rcglonal Administrator’s ap 

proval or disapproval of a State water 

quality standard shall be based on the rcqulrcmcntr of the Act as dcscrlbcd in 

$§I31 5. and I31 6 

(c) A SI~IC water qual~\y standard rcmains In etTcct. cvcn though dlbapprovcd 

by EPA. unlll rhc Srarc rcvlscs 11 or EPA 

promulgates a rule that \upcrscdcs the 

State water qual~t) \tsndard 

(d) F-P,\ Ahall. at Icas~ annually. pub 

Il\h In Ihe 1’1 IN ~41 KI.~;ISTI.H a notice of 

approvals under this tcclion 

$131.22 EPA promulgation of waler 

quality standards. 

(J) II the SL,IIC docb not adopt the 

change\ \pccllled by rhc RegIonal Admlnls;lrator ullhln YO J.I)\ Jftcr notllicarion 

of the Regional Admlnlstrator’b dlsapproval. the Admlnlstrator shall promptly 

propose and promulgJ\c such sranddrd 

(b) The Admlnlsrrator ma) also propose and promulgate a regulation, appticable IO one or more Stales, setting forth 

a new or rcvlscd standard upon dctcrminmg such ;L >\andArd 15 ncccs\ar) 10 meet 

the rcqulrcmcnrs of the Act 

(c) In promulguling w.ilcr qu.~l~[y \t.ind.irdb. the Adm!nl~~r.~!ur 15 ,ubJcit to the 

same pollc~c\. proccdurcb. anuljxs. and 

public pdrtl~lp.~rlun rsqu~remcnl\ cblablashed Tar St.t[c> 111 thcx rcgularlons. 

Subpart L)- Frdcrrll) Prunlulgnted 

Water Quality Standards 

5131.31 Arizona. 

(a) Arrlclc 6. Part 2 IS amended as fat. 

IOU\ 

( I ) Keg O-24 I I \hall read 

004.006 4.I 

006-o 10 5 

006.0 12 

I 

5.? 

0 lo-0 10 57 

050-060 

03045030450 

030.050 030.050 

020-030 020-030 

020.030 020.030 

0 50-a0-a 600 

ocic-050 ocic-050 

B The above standards arc mrcndcd to pru~cil 

the bcncliclal uses of rhc named water, BCC.IUW 

rcgulatlon ol nllrarcs and phosphates alone ma) 

not be adcquarc to protect walers from eutrophIca. 

~mn. no substance shall be added IO any surface 

water whtch produces aquatic growth 10 Ihc CXIC~I 

thal wch growths CICPM a public nutsancc or I”- 

lcrfcrcncc ulth bcncliclal uses of rhc uatcr dchncd 

.~nd dcugn.~~cd I” Rcg O-2-6 5 

(2) Reg. 6-2-6 IO Subparts A and 13 arc 

amended 10 include Reg. 6-2-6.1 I In SCrlcs w\lh Rcgs 6-2-6.6. 6-2-6.7 and 6-2. 

6.X. 

$131.33 (Resertedl 

$131.34 [Reserved) 

8131.35 Coltillc Confederated Tribes 

Indian Reservation. 

The water quality standards applxablc 

10 Ihe waters wllhin the Colv~llc Indian 

Rcscrvallon. located in the Slate of 

WashIngton. 

(a) tloc~kground. 

(I) II IS the purpose of these Federal 

water quality standards IO prcscrlbc rnlnlmum water quality requirements for the 

surface waters localed within the exkrlar 

boundaries of the Colvillc Indian RcserbaIIon IO ensure complldnce ulth xcllon 

303(c) of the Clean Wdtcr ACI 

(2) 7he (‘ol\~llc ( onlcdcr~lcd Trlbc\ 

have a prlm.rr) Intcrc\l 111 [hc pr~rtccllon. 

conlrol. conxrv.~lion. wild uI~Ii~.iI~on 01 

the waler rcsourccb of the Colv~llc IndlJn 

Rcscrvatlon Water qua111) standards 

have been enacted into lrlbal law by the 

Colv~llc Business Council of rhe Confcdcrated Trlbcs of the Colv~llc Reservation. 

as the Colv~llc Waler Qual11y Standards 

,AcI. CTC Tlrlc 33 (Rc\~~lurlon So I984- 

52h (August h. lY84) .I\ .Imcndcd bj Kc+ 

ulurlon ho. 1985-20 (J.lnuar! 18. 1985)) 

(b) %rrrrof,r (‘o\crzd The pro\ IsIons 

oi thcsc water qu.~lr\! \tJnd,lrdb bhull ap 

ply IO all surface waler\ wIthIn the cxlcrlor boundarIes of the ~‘ol\~llc Indian Rcscrvation 

(I) The water qua111) standards in this 

\cc!lon \h;ill bc uxd b! the Rcglon.il Ad. 

mlnl,trlllor for c\t.lbll>hlng an? waler 

qu.~llt) baxd h~[lon.ll t’\)lIuldnt 111~. 

LhJrgc ~IiiiiinJrIori S)sIcm Pcrmil 

(Sl’1)t.S) Car polril \,,urcch on lhc Cal- 

~IIIc Confedcratcd Trlbcb Rcxr\arlon 

(2) In conJuncrlon ulth the Ibbuance of 

xc\Ion 402 or xc‘llon 404 permits. the 

Regional Admlnlstra[or m.1) dcsignatc 

mlxlng zones In the uatcrh of rhc Lnlrcd 

Stales on the rcscrvallon on a casc-bycase basis. The size of buch InixIng 7oncs 

And the III-70~ uatcr qu,lllr) in such mixIng zones hhall bc c‘on\lzlcnt ulth the uppllcablc proccdurcb Jnd guldcllncs In 

t:l’A’s Waler QU;IIII~ SI.lndard\ tiandbook and rhc Tcshnlcal Support Document for Wstcr Qu.~l~rh tj.iscd To~lch 

(‘onrr0l 

(3) Amcndmcnth 10 the xcrlon JI the 

rcqucsl of the l.rlbc \haII proceed In the 

following manner 

(I) The requested amendmenr shall tirst 

bc duly approved b) the Confederated 

Tribes of the Colv~llc Rcszrvarlon (and so 

ccrtlficd by the Tribe\ l.cpal Counsel) 

Jnd submlttcd 10 the Kcplon,ll Administrator 

(II) The rcqucstcd amcndmcnl shall bc 

rcvlcucd by EPA (and b! the Srarc of 

W.~hhlngt~~n. I( Ihc .ILII,~~I u,~uld .~tPcc~ ;i 

boundar) uatcr) 

(III) If dccmcd In iompll,~ncc ulrh the 

C’lc,in Warcr A~I. EPA will propose and 

promulgate .III approprl.ltc ch;lnpc 10 thl> 

\cition 
(4) Amendment of this section at 

EPA’s \n\t1a11vc w1l\ fol1ou consuba\ion 

with the Tr~bc and other appropriate enliIICS Such amcndmcnts wrll then follow 

normal EPA rulemaking procedures. 

(5) All other applicable provisions of 

this part 131 shall apply on the Colville 

Confcdcratcd Tribes Reservation. Special 

attention should be paid 10 §$l31.6, 

131 IO. 131 II and I31 20faranyamendmen1 10 rhcsc sidndards 1u bc initiated by 

the Tribe 

(6) All numeric crrtcri(1 contamed in 

thts scclton apply at all in-stream Row 

ra1cs greater than or equal IO the Bow 

ra1c calcula1cd as the minimum ‘IconsccUIIVC day average flow with a recurrence 

frequency of once in ten years (7QIO); 

narrative crtlcru ( 5131 35(c)(3)) apply 

regardless of Row. The 7010 low flow 

shall be calculated using methods recommended by the US Geological Survey. 

(d) L)efinlf~ons 

(I ) “Acute ~oxrcr~y” means a dclcterious response (c g . morrality. disoricnta1ion. immobilization) 10 a stimulus observed in 96 hours or Icss 

(2) “Background conditions” means 

the btological. chcmisal. and physical condi1ions of a waler body, upr1rcam from 

the point or non-point source discharge 

under considcrarion Background sampling localton in an enforcement action 

will be upsrrcam from the point of discharge, but no1 upsrrcam from other inflows If several discharges 10 any waler 

tiy cxisl. and an cnforccmcni ac1ion IS 

bcmg taken for possible viola1rons IO the 

s1andards. background samphng will be 

undertaken immcdialcly upstream from 

each discharge 

(3) “Ccrcmonial and Rcl~g~ous waler 

USC” means ~CIIVI~ICS involving tradilional 

Ndlivc American spirrlual practices 

which involve. among o1hcr things, primary (direct) conlact wi1h waler. 

(4) “Chronic Toxicity” means the lowest conccnlrallon 0J a consliluenl causing 

observable ctfcc~s (I c.. considcrmg IcthalII~. growth. reduced reproduc1ion. etc.) 

over a rclalrvcly long period of irmc. usually a 28day ICSI pcrmd for small fish 1cs1 

SpcCJCS 

(5) “~‘ounc11” or “Tribal Council” 

mcdns 1hc Colviilc Business Council of 

the Colv~llc Confederated Tribes. 

(6) “Gcomctric mean” means the 

“n1h” rwt of .I produci of “n” factors 

(7) “Mean retention time” means the 

1imc obtained by dividing a reservoir’s 

mean annual minimum 1otal storage by 

the non-zero 30day. ten-year low-flow 

from the reservoir. 

(8) “Mixing Zone” or “dilution zone” 

means a limited area or volume of wa1cr 

where initial dilution of a discharge takes 

place; and where numeric water quality 

criteria can be exceeded but acu1cly 1oxic 

conditions arc prevented from occurring. 

(9) “pH” means the negative logarithm 

of 1he hydrogen ion concentration. 

( IO) “Primary contact recreation” 

means activities where a person would 

have direct conlact with water to the 

point of complete submergence, including 

bu1 not limited 10 skin diving, swimming, 

and water skiing. 

(I I) “Regional Administrator” means 

the Administrator of EPA’S Region X. 

(I 2) “Rcserva1ion” means all land 

within the limits of the Colville Indian 

Reservation. esrablishcd on July 2. 1872 

by Executive Order, prescnrly containing 

1.389.000 acres more or less, and under 

the Jurisdiction of the United States governmen1. no1withstanding 1hc issuance of 

any patent, and including rightsof-way 

running through the reservation 

(I 3) “Secondary contact recreation” 

means ac1ivitics where a person’s water 

contact would be limited 10 the cx1cnt 

that bacterial infections of eyes. cars, respira1ory. or digcs1ivc systems or urogenital areas would normally be avoided (such 

as wading or fishing). 

(14) “Surface water” means all water 

above the surface of the ground within the 

exterior boundaries of the Colville Indian 

Reservation including but not limited to 

lakes, ponds, reservoirs. artificial impoundmen1s. streams. rivers. springs, 

seeps and wetlands. 

(I 5) “Tempcra1urc” means water 1empcraturc expressed in Centigrade degrees 

(0. 

( 16) “To1al dissolved solids” (TDS) 

means the total filterable residue that 

passes through a standard glass fiber filter 

disk and remains after evaporation and 

drying 10 a cons1an1 weigh1 at I80 degrees 

C. it is considered IO be a measure of the 

dissolved salt content of the water. 

(I 7) “Toxicity” means acu1c and/or 

chronic toxicity. 

(18) “Tribe” or “Tribes” means the 

Colville Confederated Tribes. 

(19) “Turbidity” means 1hc clarily of 

water expressed as nephclomctric turbidiIY units (NTU) and measured with a calibra1cd turbidimc1cr. 

(20) “Wildhfc habi1ar” means the waters and surrounding land areas of the 

Reservation used by fish, other aquatic 

life and wildlife a1 any stage of their life 

history or activity. 

(c) General comldemtons. The following general guIdelines shall apply IO the 

water quality s1andards and classiticalrons 

set forth in the use dcsignalion Sections. 

( 1) Classrficarron Boundarm. At the 

boundary bctwccn waters of ditTcrcn1 

classifications. the waler qualrry slandards for the higher c\assihcaGon %ha\\ 

prevail. 

(2) Anridrgradarton Policy. This an1idcgradation policy shall be applicable 10 

all surface waters of the Reservation. 

(i) Existing ins1rcam water uses and 

the lcvcl of water qualily necessary 10 pro 

1~1 the exis1ing uses shall bc maintained 

and protcc1r.d. 

(;I) Where the qualily of the waters cxcccds lcvcls necessary 10 suppor1 propagation of fish, shellfish. and wildlife and rccrcation in and on the water, thar quality 

shall be maintained and protected unless 

\he Regiona\ Adminis1ra1ar finds, after 

full satisfaction of the inter-govcrnmcnlal 

coordination and public participation provisions of the Tribes’ contrnuing planning 

process, that allowing lower water quality 

is necessary 10 accommodale important 

economic or social dcvclopmcnt in the 

area in which the walers arc located. In 

allowing such degradation or lower water 

quality, the Regional Administrator shall 

assure water quality adequate to protect 

existing uses fully. Further. the Regional 

Administralor shall assure 1ha1 1herc 

shall be achieved the highest statutory 

and regulatory rcquircmcn1s for all new 

and existing poinr sources and all costcfTectivc and reasonable best managemen1 practices for nonpoinl source con1101. 

(Iii) Where high quality walers are 

idcn1itied as constituting an outstanding 

nalional or reservation resource. such as 

waters withm areas designated as unique 

water quality management areas and wa1crs o1hcrwisc of cxccp1ional rccrcalional 

or ecological significance. and arc designated as special resource waters. rhat water quality shall be maintained and protected 
(iv) In those casts whcrc potcntral watcr quality rmparrmcnt assoc~atcd with a 

thermal discharge 1s rnvolvcd. thus antrdcgradatron polrcy‘s rmplcmentrng 

method shall bc consrstcnt with scctron 

316 of the Clean Water Act. 

(3) ArJ!hefI’c Qualifies. All waters 

within the Rcscrvatron. including those 

within mrxrng zones. shall be free from 

substances. attrrbutablc IO wastewater 

discharges or other pol\utant sources, 

that: 

(I) Scttlc to form obJectronablc dcposits. 

(II) Float as debris. scum. oil. or other 

maltcr forming nuisances; 

(rir) Produce obJccrronablc color, odor, 

taste. or turbidity, 

(IV) Cause InJury to, arc toxic to. or 

product advcrsc physiological rcsponscs 

in humans, animals, or plants; or 

(v) Produce undcsrrablc or nuisance 

aquatic life 

(4) Anolyr~col Mrrhods 

(i) The analytrca\ testing methods used 

to mcasurc or othcrwrsc evaluate compliance with water quality standards shall IO 

the extent practrcablc. bc in accordance 

with the “Guldclrncs Establishing Test 

Proccdurcs for the Analysis of Pollutants” 

(40 CFR part 136) When a testing mcthod IS not avarlablc fur a particular sub 

stance, the most recent edition of “Standard Methods for the Examination of 

Water and Wastcwatcr” (publtshcd by 

the American Publrc ticalth Association. 

American Water Works Associatron. and 

the Water Pollutron Control Fcdcration) 

and other or superseding mcth& published and/or approved by EPA shall be 

used. 

(f) General Waler Use und Crileria 

Classes The followrng criteria shall apply 

to the various classes of surface waters on 

the Colv~llc Indian Rcscrvation: 

[ I ) Gloss I ~Er~roord~nary~- 

(i) Dcsrgnorcd uses. The designated 

uses include. but are not limited to, the 

followrng 

(A) Water supply (domestrc. industrial, 

agricultural). 

(B) Stock watcrmg. 

(C) Frsh and xhcllfish. Salmonid migration, rearing. spawnmg. and harvcstrng. 

other tish mrgr.rtran. rearing. spawning, 

and harvcstlng 

(D) Wrldlrl-c habitat 

(E) Ccrcmonlal and rcltgious water 

USC 

(F) Rccrcatton (prrmsry contact rccrcatron, sport fishing. boating and acsthctrc 

cn~oymcnt). 

(G) Commerce and navigation. 

(ii) Wolrr quolily CIIICIrU. 

(A) Bacteriological Criteria-The gco 

metric mean or the cntcrococci bacteria 

dcnsrties in samples taken over a 30 day 

period shall not exceed 8 per I00 mrllrlitcrs. nor shall any single sample exceed an 

cntcrococci density of 35 per I00 milliliters. Thcsc Irmrts arc calculated as the 

geometric mean of the collected samples 

approximately equally spaced over a thrrty day period. 

(B) Dissolved oxygen-The dissolved 

oxygen shall exceed 9.5 mg,/l. 

(C) Total dissolved 

gas-conccntratrons shall not exceed 1 IO 

percent of the saturation value for gases 

at the extsting atmospheric and hydrostatic pressures at any poinl of sample Collcclion. 

(D) Temperature-shall not cxcccd 

lb.0 degrees C due to human activitrcs. 

Temperature increases shall not, at an) 

time, exceed t=23/(T+S). 

(I) When natural condrttons exceed 

16.0 degrees C, no temperature mcrcasc 

WII[ bc allowed whrch will raise the rcccrvmg water by greater than 0.3 dcgrccs C 

(2) For purposes hereof, “t” reprcscnts 

the permissive temperature change across 

the dilution zone; and “T” represents the 

highest cxrsting temperature In thus water 

classrfication outsrdc of any dilution ronc 

(3) Provided that temperature Increase 

resulting from nonpoint source activities 

shall not exceed 2.8 degrees C. and the 

maximum water temperature shall not cxcccd 10.3 degrees C 

(E) pH shall be within the range of 6 5 

to 8.5 with a human-caused variation of 

less than 0.2 units. 

(F) Turbrdrty shall not exceed 5 NTU 

over bra&ground turbidity when the background turbidity is 50 NTU or less. or 

have more than a IO percent mcrcasc rn 

turbidity when the background turbidity 

is more than 50 NTU. 

(Ci) Toxic. radioactive. nonconvcntiona\. or deleterious material concentrations 

shall bc lcsr than those o( publrc hca\th 

significance, or which may cause acute or 

chrontc toxic conditions to the aquatic breta, or which may adversely affect dcsrgnatcd water uses. 

(2) Class II (Excellent).- 

(I) I)usrgnu(cJ r~~c.~ ‘I hc dcsrgnatcd 

uses rncludc but .rrc n,)t I~m~trd to. the 

following. 

(A) Water suppI) (d,lmcstrc. rndustrral. 

agrrcultural) 

(8) Stock udtcrrnp 

(C) Frsh and shclltish S.rlmontd mrgratron, rearing. sp;run~np. and harvcstrnp. 

other tish migration. rcarrng. spawning, 

and harvesting; crayfish rearing. rpawnrng. and harvesting 

(D) Wildlife habItAt 

(1:~ CcrernoniJl and rcllgrous water 

USC 

(F) Rccrcatron (primary contact rccrcation. sport fishing. b).rtrng .rnd acsthctrs 

cn)oymenl). 

(G) Commerce and n.rvip~tmn 

1 I,) N’cl/rr qlidrrl “rllt’rfd 

(A) Bactcrralogrcal Crrtcrra-The gcllmetric mean of the cntcrococcr bactcrra 

dcnsrtrcs rn samples tahcn over a 30 day 

pcrmd shall not cxcccd 16/1OO ml. nor 

shall any s~r,glc ~~mplc crcccd an cntcrcr 

cocci Jcnblt) of 75 Fr I00 mrllrlitcrs 

Thcsc Irmrts arc calculdtcd .~s the geomctrrc mean of the collcctcd s.rmplcs approxlmatcly cqu.tll~ sp~vcd uvcr a thirty day 

period 

(8) Drssolvcd oxygen-The drssolvcd 

oxygen shall cacccd 8 U mg;l 

(C) Total dissolved gas-cunccntraIrons shall not exceed I IO percent of the 

saturation value for gases 31 the cxrstrng 

atmosphcrrc and hydrostatrc prcssurcs at 

any point of s3mplc collectron 

(D) Temperature-shall not exceed 

18.0 degrees C due to human actrvitrcs. 

Temperature increases shall not. at any 

time. cxcccd t=?K/(T t7) 

(I) When natural condrtruns cxcccd I8 

degrees C no tcmpcraturc Increase UIII bc 

allowed which WIII raise the rcccrvrng water temperature by grcatcr than 0 3 dcgrccs C 

(2) For purposes hereof. “t” represents 

the permissive tcmpcraturc change across 

the dilution zone; and “T” represents the 

highest existing temperature in this water 

classification outside of any dilution zone 

(3) Provrdcd that tcmpcraturc rncrcasc 

resulting from non.point source activitrcs 

shall not cxcccd 2 X dcgrccs c‘. and the 

maxrmum water tcmpcraturc shall not cxcccd I8 3 degrees C 

(E) pti shJll bc wlthrn the r.rngc of 0 5 

IO 8.5 with a human-caused varratron al 

less than 0.5 unrts 
(f-) TurbIdIt) \hall not exceed 5 NTL 

over background lurbldl1y when the background IurbldlI) IS 50 \TU or less. or 

have more than a IO pcrcenl Increase In 

Iurbldltj when rhe background turbidity 

IS more than SO NTC; 

(G) TOXIC. radmactlvc. nonconvcntlonal. or dclcrcrlous maicrlal conccnIraIlons 

shall bc less than those of public health 

slgmticance. or which may cause aculc or 

chrunlc IUXIC‘ condl1lons IO [he aqua11c bl01.1. or which n1.1) adbcrscly atiecl deslgn.ilcd u.ilcr ubeh 

(3) (‘lure III f(;md 

(I) Ikc~gnurrd UJCS The dehlgnarcd 

uses Include bur Jre not IlmiIed 10. the 

following 

(A) U’JIer \uppl) (IndusIrlal. a8rlcuIIural) 

(B) SIock warering 

(C) Fish and shellfish. Salmonid migralion. rearing. spawning. and harvesting; 

orhcr fish mlgrarion. rearing. spawning. 

and harvcsrlng. craktish rc;irlng. spaunlng. and harvesting 

(D) Wlldllfc hablrar 

(E) Recreation (sccondarb conlacl recrealIon. sporl tishlng. bodllng and aesthetIc cnla)mcnl) 

(F) Commerce Jnd naklgatlon 

(ii) H’arrr quolrry c‘rrfrrra 

(A) B.icIeriologlcal CrlIerla-The gee 

metric mean of Ihc cnIcrococcl bacteria 

denslllcs In samples taken over a 30 day 

pcrmd shall nut exceed 33/100 ml. nor 

shall an! single sample exceed an cnlcroC‘OCCI den>10 of I50 per IO0 mllllll~crs 

Thcsc llrnlls are calculated as the gcometrlc mean of rhc collecled samples approxlmarely equJll> spaced obcr a IhlrIy day 

period 

(B) Ulb\ul\ed oxbgcn 

(C) TUIJI dl\\olbed 8~s concentraltons 

bhdll nut ckcecd I IU perccni of Ihc saIuratwn value for gases aI rhe exlsting atme 

spheric and hydrosIatic pressures al any 

point of sample collection 

(D) Temperature shall not exceed 2 I .O 

degrees C due IO human acllvitics. Tcmpcraturc increases shall not. at any time. 

exceed 1=34/(T+9). 

(I) When natural conditions exceed 

21 .O degrees C no tcmpcraturc increase 

UIII be allowed which will raise the reccivlng water lempcrature by greater than 0.3 

degrees C. 

(2) For purposes hereof, “I” represents 

the permissive lcmpcraturc change across 

Ihe dilution zone. and “T” rcpresenIs the 

highest cxrsIin8 Icmpcraturc in this water 

classification outside of any dilulion zone. 

(1) Provided that Iempcraturc increase 

resulIin8 from nonpoinI source activities 

shall not exceed 2.8 degrees C. and the 

maximum water tcmpcraturc shall not cxcccd 2 I .3 degrees C. 

(E) pH shall be within the range of 6.5 

to I( 5 with a human-caused variation of 

less than 0.5 units. 

(F) Turbidity shall not exceed IO NTU 

over background turbidity when the back8round lurbldrty is 50 NTU or less. or 

have more than a 20 percent Increase In 

turbidiry when the background turbidity 

IS more than 50 NTU. 

(G) Toxic. radioactive. nonconvcntlonal. or deleterious material conccntrat~ons 

shall bc less Ihan those of public health 

sigmticancc. or which may cause acuIe or 

chronic IOXIC conditions IO the aquaclc blo[a. or which may adversely afl‘cct dcsignated water uses. 

(4) Class IV (Fair)- 

(i) Designated uses. The designated 

uses include but are noI llmitcd IO. the 

following 

(A) Waler supply (Induslrlal). 

(B) Stock walering 

(C) Fish (salmonld and other tirh mlgraIlon). 

(D) Recreation (secondary contact rccrcalion. sport fishing, boating and acsIhcIic enjoyment). 

(E) Commerce and navigation. 

(ii) Wafer qualily crifcria 

(A) Dissolved oxygen. 

raaymd I 401 30 

(B) Total dissolved gds-concentra- 

(Ions shall noI exceed I IO percent of the 

saturallon value for gases at the exlslrng 

atmosphcrlc and h!drosIaIlc pressures at 

any point of sample colleclion 

(C) TempcraIurc shall no1 exceed 22.0 

degrees C due IO human ~LXIVIIICS Tcmpcrature increases shall noI. aI any Ilmc. 

cxcccd 1=2O/(T+2) 

(/) When natural condlIlons cxcccd 

22.0 degrees C. no temperature Increase 

will be allowed which will raise the rcceiving water Icmpcralure by 8reaIcr than 0.3 

degrees C 

(2) For purposes hereof. “I” represents 

the permissive temperature change across 

Ihe dilution zone; and “T” represents the 

highcsl cxlsling Iemperalurc In this uaIer 

classiticarion outsIde of an) dlluIion zone. 

(D) pH shall be ullhln the range of 6.5 

IO 9.0 with a human-caused varlatlon of 

less than 0.5 units 

(E) Turbidity shall no1 exceed IO NTU 

over background IurbidlIy when the background turbidity is SO STU or less, or 

have more Ihan a 20 percenr increase In 

Iurbidity when Ihc background 1urbidiIy 

is more than 50 NTU 

(F) Toxic. radioactlbc. nonconvenlional, or dclercrlous material concentrations 

shall bc less than those of public health 

slgnlticancc. or which ma) cause acute or 

chronic toxic condlIlons to the aquuric blala, or which ma) adbcrsel! aHect dcsignaIcd waler uses 

(5) Lake Class 

(I) Designorcd USES The dcslgnarcd 

uses include but arc not limited IO. the 

following, 

(A) Water suppI) (domebtlc. Industrial. 

agricullural) 

(B) Stock watering 

(C) Fish and shellfish- Salmomd migralion, rearing, spauning. and harvesting; 

other fish migration. rearing. spawning. 

and harvcsling. crahtish rearing. spawnlng. and har\esllng 

(0) U’lldllfe hablrat 

(E) Ccrcmonlal and rellglous waler 

USC 
(F) Recreation (prtmary contact recrcation. sport fishing. boattng and aesthetic 

cn)oymcnl). 

(G) Commcrcc and navtgatton. 

(ii) Worrr quolrfy crirerio. 

(A) Bacteriological Criteria. The gco 

metric mean of the cntcrococci bacteria 

densities in samples taken over a 30 day 

period shall not cxcccd 33/100 ml. nor 

shall any single sample cxcccd an cntcrococci density of IS0 per 100 milliliters. 

Thcsc limits are calculated as the gcomctric mean of the collcctcd samples approximately equally spaced over a thtrty day 

period. 

(8) Dissolved oxygen-no measurable 

dccrcasc from natural condittons. 

(C) Total dissolved gas concentrations 

shall not cxcccd I IO pcrccnt of the saturation value for gases at the existing atmo 

spheric and hydrostatic pressures at any 

point of sample collection. 

(D) Temperature-no mcasurablc 

change from natural conditions. 

(E) pH-no mcasurablc change from 

natural conditions 

(F) Turbidity shall not cxcccd 5 NTU 

over natural conditions. 

(G) Toxic. radioactive. nonconvcntional. or deleterious material concentrations 

shall be less than those which may affect 

public health. the natural aquatic cnvironmcnt. or the dcstrablltty of the water for 

any USC 

(i) General characfmsftcJ Thcsc arc 

fresh or saline waters which comprlsc a 

special and unique resource to the Rcscrvation. Water quality of this class will be 

varied and unique as dctcrmtncd by the 

Regional Administrator in cooperation 

with the Tribes. 

(ii) Drsignafed uses. The designated 

uses include. but arc not limited to, the 

following: 

(A) Wildhfc habitat 

(B) Natural foodchain matntcnancc. 

(iii) Water quality criteria. 

(A) Entcrococci bacteria dcnsittcs shall 

not cxcccd naturAl conditions 

(B) Dissolved oxygen-shall not show 

any measurable decrease from natural 

conditions. 

(C)Total dissolved gas shall not vary 

from natural condlrlons. 

(D) Temperature-shall not show any 

measurable change from natural condi- 

[tons 

(E) pH shall not show any mcasurablc 

change from natural conditions. 

(F) Scttlcablc solids shall not show any 

change from natural conditions. 

(G) Turbidity shall not cxcccd 5 NTL 

over natural conditions. 

(H) Toxic. radioactive, or dclctcrious 

material concentrations shall not cxcccd 

those found under natural conditions. 

(g) General Classificafions. Gcncral 

classifications applying to various surface 

watcrbodics not specifically classified undcr 5 I3 I .35(h) arc as follows. 

(I) All surface waters that arc tributaries to Class I waters arc classlhcd 

Class I. unless otherwise classified. 

(2) Except for those specifically classtficd othcrwisc. all lakes with existing avcrage concentrations less than 2000 mg/L 

TDS and their feeder streams on the Colvillc Indian Reservation arc classified as 

Lake Class and Class I, rcspcctivcly. 

(3) All lakes on the Colvillc Indian 

Reservation with existing avcragc conccntrations of TDS equal to or cxcccding 

2000 mg/L and their fccdcr streams arc 

classified as Lake Class and Class I rcspcctivcly unless specifically classified 

otherwise. 

(4) All reservoirs with a mean dctcnlion time of greater than I5 days arc classified Lake Class. 

(5) All reservoirs with a mean dctcntlon ttmc of I5 days or less arc classtficd 

the same as the rlvcr section In which 

they arc located. 

(6) All rcscrvoirs established on prc-cxisting lakes arc classified as Lake Class. 

(7) All wetlands arc assigned IO the 

Special Resource Water Class. 

(8) All other waters not specifically assigned to a classificatton of the rcscrvation 

arc classilicd as Class II. 

(h) Specific Classificarions Specific 

classifications for surface waters of the 

Colvillc Indian Rcscrvatton arc as follows 

cagar Creek 

Coral* Creek 
curs I 

class III 

cm9 II 

LC 

LC 

LC 

LC 

LC 

LC 

LC 

LC 

LC 

LC 

LC 

LC 

LC 

LC 

LC 

LC 

LC 

SRW 

SRW 

SRW 

LC 

LC 

LC 

LC 

LC 

LC 

SRW 

9131.36 Toxics criteria for those stales 

not complying with Clean Water Act 

section 303(c)(2)(B). 

(a) Scope. This scctlon IS not a gcncral 

promulgation of the scctlon 304(a) crltcria for priority toxic pollutants but IS rcstrictcd to specific pollutants in spcclfic 

States 

(b) (I ) EPA’s Secrron SM(a/ Curma 

/or Prrorily Toxic Polluranrs 
A 

FRESHUATER SALTUATER 

I 

I Criterion Criterion Criterion Criterion ' For Consuption of: 

I 

Maxim Continuous 

(I) COnPOUNO US Cor~.d Conc.d 

I 

Maxinun Uatcr 6 Organi-, 

Conc.d Organi- only 

Mu&w , (uQ/L) (W/L) , (u!J/L) (w/L) (WC) 

, Bl 02 I Cl 01 02 

1 Antimony 7440360 ; I I I I 14 a 4300 a 

2 Arsenic 7440382 ; 360 m 190m I 69 m Mm 1 0.018 a,b,c 0.14 a,b,c 

3 Bcrylliun 7440417 ; I I 

, I n n 

4 Ca&iun 7440439 ; 3.9 c,m 1.1 c,m 1 &3 m 9.3 m 1 n n 

Sa Chromiun (111) 16065831 1 1700 c,m 210 e,m 1 I I " n 

b Chraniun (VI) 18540299 ! 16 m 11 m ! 1100 m 50m 1 n n 

6 Copper 7440508 ; 18 c,m 12 c,m 1 2.9 m 2.9 m 1 

7 Lead 7439921 1 82 c,ra 3.2 c,m I 220 m 8.5 m ) n n 

8 Mercury 7439976 1 2.4 m 0.012 i I 2.1 m 0.025 i I 0.14 0.15 

9 Nickel 7440020 I 1400 c,m 160 c,m 1 7Sm 8.3 m I 610 a 4600 a 

10 Sclcniun 7782492 ! 20 5 ! 300 m 71m I n n 

11 SiLvcr 7440224 ; 4.1 

c,m 

I 2.3 m , I I 

12 Thalliun 7440280 ) I I , , 1.7 a 6.3 a 

13 Zinc 7440666 ; 120 c,m 110 c,m ) 95m 84m I 

1C Cyanide 57125 1 22 5.2 I I 1 1 I 700 a 220000 a,j 

15 Asbestos 1332214 ! I ! 7.000.000 fibers/L k 

16 2,3,7,8-TCOO (Dlorln) 1746016 ; r 

I ~0.000000013 c 0.00000001c c 

17 Acroltln 107028 ; I I I , 320 780 

18 Acrylonlfrile 107131 1 I I 0.059 a,c 0.66 a.c 

19 Benzene 71432 1 I I 1.2 a,c 71 arc 

20 Bromoform 75252 1 I I 4.3 a.c 360 c,c 

21 Carbon Tetrachlorick 56235 ; I I 0.25 a,c 4.4 a,c 

22 Chlorobcnzcnc 108907; I I I I 6800 21000 l ,j 

23 ChLorodibromawthane 124681 ; I I 0.41 arc 34 a,c 

24 ChLoroethane 75003 1 I I I I 

25 2-Chloroethvlviny\ Ether 110758 ! , I 

26 Chloroform 67663 ; I I 5.7 a,c 470 a,c 

27 DichLorobr-thane 75274 ; I I 0.27 a,t 22 a,c 
I B I 

I 

C 

I 

D 

FRESHYATER 

I 

SALTYATER 

I :li-s :iik for"cZizA) 

Criterion Criterion 

I 

Criterion Criterion I For Consqtion of: 

Maximan Continuous Maxima Continuous 

I 

Uater L Organism 

(I) COMPOUND CAS Conc.d Conc.d ' Conc.d Ctmc.d Organism MlY 

Nuber , (W/L) (WI/L) 1 (W/L) (W/L) 1 (W/L) tug/L) 

I 61 82 I Cl 12 I Dl 02 

28 l,l-Dichloroethane 75343 ; I 

I I 

29 1,2-Dichloroethw 107062 ; I I 0.38 a,c W a,c 

30 l,l-Dichloroethylene 75354 ; I I I I 0.057 a,c 3.2 a,c 

31 1,2-Dichloropropane 78875 ; I I I I 

32 1.3-Dichloroorocwlene 542756 ! I I L 10 a 1700 a 

33 Ethylbenzene 100414 ; I I I , 3100 a 29000 a 

34 Methyl Branlde 74839 ; I I I I 48 a 4000 a 

35 Methyl Chloride 74873 ; 1 I I I " n 

36 Wethylen Chloride 75092 ; I I 

, t 4.7 a,c 1600 a,c 

37 1.1.2.2.TetrachLoroethane 79345 1 I I 0.17 a.c 11 a,c 

38 Tetrachloroethylene 127184 f I I I 1 0.8 c 8.85 c 

39 Toluene 108883 1 1 1 1 I 6800 a 200000 a 

40 1,2-Trans-DichloroethyLene 156605 1 I 1 1 1 

41 l,l,l-Trlchloroethan 71556 1 I I I I n " 

42 1.1.2-Trichloroethsn 79005 ! I I 0.60 a.c 42 a,c 

43 Trichloroethylene 79016 f I I 1 I 2.7 c 81 c 

44 vinyl Chloride 75014 1 I I 2 c 525 c 

45 2-Chlorophenol 95578 ; I 0 I I 

46 2,4-Dichloro@wnol I 120832 ; I 

I I 93 a 790 a.1 

47 2.4-Dimthvldwnol 105679 ! I I 

48 2-Methyl-4.67Dinitrophenol 534521 ; 1 , I , 13.4 765 

49 2,4-Dinitrophenol 51285 1 I I I I 70 a 14000 a 

50 2-Nltrophenol 88755 ; I I I ! 

51 4-wltrophenol 100027 ; I I I I 

52 3-Methyl-4-ChloroMenol 59507 ! 1 1 

53 Pentachlorophenol 87865 ; 20 f 13f 1 13 7.9 ; 0.28 a,c 8.2 a,c,J 

54 Phenol 108952 1 I I 1 I 21000 a 4600000 a,~ 

55 2,4,6-Trichlorophenol a8062; I I 

I I 2.1 a,c 6.5 a,c 

56 Acenaphthcn 83329 ; , I I I 
A 

FRESHUATER 

I 

SALTUATER 

' Criterion Criterion ' Criterion Criterion ' For Consugtion of: 

Maxisun Continuous Maxinun Continuous Uater 8 Organisms 

(I) COHPO UND CAS I cont. d Cmc.d I Conc.d Conc.d I Organisms only 

Nurkr 

1 Bl 

tug/L) tug/L) 

j Cl 

(W/L) tug/L) tug/L) fug/L) 

I 02 c2 1 Dl D2 

57 Acenaphthylene 208968 ; I 1 I I 

58 Anthracene 120127 ; I 1 I I 9600 a 110000 a 

59 Benridine 92875 ; 1 I 1 I 0.00012 a,c 0.00054 a,c 

60 Benzo(a)Anthracene 56553 1 1 1 I I 0.0028 c 0.031 c 

61 Benzota)Pvrene 50328 ! 1 I 0.0028 c 0.031 c 

62 Benzo(b)Fluoranthene 205W2 ; 1 1 1 I 0.0028 c 0.031 c 

63 Benro(ghi)Perylm 191242 1 I 1 

I 1 

64 Eenzo(k)Fluoranthene 207089 ; I 1 

, I 0.0028 c 0.031 c 

65 Bis(Z-ChloroethoxyMethane 111911 ; I I I I 

66 Bis(Z-ChloroethylJEther 111444 ! I I 0.031 a.c 1.4 a,c 

67 Eis(Z-Chloroisopropyl)Ether 108601 t 1 I I I 1400 a 170000 a 

68 Bis(Z-EthylhexyljPhthalate 117817 ; 1 , , I1.8 a,c 5.9 a,c 

69 4-Bromophenyl Phenyl Ether 101553 ; 1 I 

1 I 

70 Eutylbenzyl Phthalate 85687 j 1 I 

, , 

71 2-Chloronachthalene 91587 ! 1 I 

72 4-Chloroghenyl Phenyl Ether 7005723 I , I 

, , 

73 Chrysene 218019 I 1 1 I 1 0.0028 c 0.031 c 

74 Dibenzo(a,h)Anthracene 53703 I , I 1 1 0.0028 c 0.031 c 

75 1,2-D~chlorobenzene 95501 1 1 1 1 I 2700 a 17000 a 

76 1.3-Dichlorobmrene 541731 ! 1 1 400 2600 

77 1,4-Dichlorobenrene 106467 1 1 I I 1 400 2600 

78 3,3'-Dichlorobenridine 91941 ; I 1 , I0.04 a,c 0.077 a,c 

79 Diethyl Phthalate 84662 1 I 1 I I 23000 a 120000 a 

80 Dimethyl Phthalate 131113 1 I 1 I 1 313000 29ooooo 

81 Di-n-Butyl Phthalstc 84742 ! I 1 2700 a 12000 a 

82 2,4-Dinitrotoluene 121142 1 I 1 I I 0.11 c 9.1 c 

83 2;6-Dinitrotoluene 606202 ; 1 I 

1 I 

84 Di-n-Octyl Phthalate 117840 ; 1 

1 I 

85 1,2-OiphenyLhydraz1ne 122667 ; I I 0.040 a,c 0.54 a.c 
A B C I D 

FRESHUATER SALTUATER 

:lims Fi:k for"cir:iG&) 

Criterion Criterion I Criterion Criterion For Consmption of: 

Maximum Continuous ' Maxim!! Continuous Uater 8 Organi tms 

(rl) COMPOUND CAS Conc.d Conc.d ' Conc.d 

Nuber , (WL) (W/L) 

, Bl B2 j Cl 

Conc.d Organisms mlY 

(w/L) (WL) (ug/L) (W/L) 

c2 Dl D2 

M Fluoranthm 206440; \ I 300 a 370 a 

87 Fluorene 86737 ; 1 I I 

, 1300 a 14000 a 

88 Hexach I orobmzene 118741 ; I I I I 0.00075 a,c 0.00077 a,c 

89 tiexachlorobutadiene 87683 1 I 1 I 0.44 a,c 50 a,c 

90 Hexachlorocycloaentadiene 77474 1 I I 240 a 17000 a,; 

91 Hexachloroethane 67721 I 1 I I 1.9 a,c 8.9 a,c 

92 Indmo(1,2,3-cd)Pyrene 193395 1 I I I I 3.0028 c 0.031 c 

93 lso@lorone 78591 / 1 I 1 ! 8.4 a,c 600 a,c 

94 Naphthalene 91203 1 I 1 I I 

% Nitrobenzm 98953 ! I I 17 a 1900 a,j 

96 N-Nltrosodimethylamine 62759 1 I I 0.00069 a,c 8.1 a,c 

97 N-Nitrosodl-n-Pr~ylemlnc 621647 ; I I I I 

98 N-Nitrosodiphenylamine 86306 ) I 1 I 5.0 a,c 16 a,c 

W Phenanthrme 85018 ; I 1 I \ 

100 Pyrene 129000 I I I 960 a 11000 a 

101 1,2,C-Trlchlorobenrene 120821 1 I I I I 

102 Aldrln 309002 ; 39 I 1.3 g I /0.00013 a,c 0.00014 a,c 

'03 alpha-EM 3198&b / I I / 1 0.0039 a,c 0.013 a,c 

104 beta-EHC 319857 I I I 3.014 a,c 0.046 a,c 

105 gm-BHC 58899 ! 2s 0.08 g ! 0.16 g \ 0.019 c 0.063 c 

106 dette-BHC 319868 ( I , \ 1 

107 Chlordane 57749 j 2.4 g 0.0043 g ; 0.09 g 0.004 g ; 0.00057 a,c 0.00059 a,c 

108 4-C'-DDT 50293 I 1.1 g 0.001 g ; 0.13 g 0.001 g ; 0.00059 a,c 0.00059 a,c 

109 C,C'-DDE 72559 ; I I 0.00059 a,c 0.00059 a,c 

110 6.4'.DOD 72548 ! I I 0.00083 a.c 0.00084 a,c 

111 Dleldrin 60571 1 2.5 g 0.0019 g 1 0.71 g 0.0019 g ; 0.00014 a,c 0.00014 a,c 

112 alpha-Endosulfan 959988 ; 0.22 g 0.056 g ; 0.034 g 0.0087 g ; 0.93 a 2.0 a 

113 beta-Endosulfan 33213659 1 0.22 g 0.056 g 1 0.034 g 0.0087 g I 0.93 a 2.0 a 
i B C I 

I 

D 

FRESHWATER SALTUATER ' 

Criterion Criterion Criterion Criterion For Conarrption of: 

Maxinn Continuous Maxinun Continwws Uater L OrgmisRI 

(1) COMPOUND CAS Conc.d 

' 81 

Conc.d Conc.d 

j Cl 

Conc.d Orgmiw OnlY 

Nuder Lug/L) (LAB/L) (WL) (WI/L) 

' 01 

(W/L) (tJg/L) 

I B2 c2 I 02 

114 Endosulfan Sulfate 1031078 ; I I 0.93 a 2.0 a 

115 Endrin 72208 ; 0.18 g 0.0023 g ( 0.037 g 0.0023 g ; 0.76 a 0.81 a,j 

116 Endrin Aldehyck 7421934 I I I I 0 0.76 a 0.81 a,j 

117 Heptachlor 76448 ; 0.52 g 0.0038 g ; 0.053 g 0.0036 g I 0.00021 a,c 0.00021 a,c 

118 HeDtachlor EDoxide 1024573 ! 0.52 g 0.0038 Q ! 0.053 9 0.0036 g ! 0.00010 0.c 0.00011 a,c 

119 PCB-1242 53469219 ; 0.014 g ; 0.03 g ; O.ODDO44 l ,c 0.000045 a,c 

120 PCB-1254 11097691 1 0.014 g ) 0.03 g ; 0.000044 a,c 0.000045 a,c 

121 PCB-1221 11104282 1 0.014 g ; 0.03 g ; 0.000044 a,c 0.000045 a,c 

122 PCB-1232 11141165 1 0.014 g ; 0.03 g ; 0.000044 a,c 0.000045 a,c 

123 PCB-1248 12672296 ! 0.014 !I ! 0.03 9 ! 0.000044 a.c 0.000045 a,c 

124 PCB-1260 11096825 ] 0.014 g ; 0.03 g ; 0.000044 a,c 0.000045 a,c 

125 PCB-1016 12674112 1 0.014 g [ 0.03 g ; 0.000044 a,c 0.000045 a,c 

126 Toxaphene 8001352 ; 0.73 0.0002 ; 0.21 0.0002 ; 0.00073 a,c 0.00075 a,c 

Total No. of Crlterla (h) = 24 29 23 27 91 90 
2 Crircrld rc\\rcd to reflect current 

.igcric) q l or RfD. as contained in the 

lntcgrdtcd Risk Information System 

(IRIS;) The fish ttssue bioconcentration 

factor (BCF) from the 1980 criteria documcnts was rcralncd In all casts 

b The crltcrla rcfcrh IO the Inorganic 

lurrn onI> 

c‘ Crltcrld In the m.Itrlx based on carcinogcnlclI> ( IO6 rl,k) For a risk level of 

IO ‘. mobc Ihc dcclmal point In the matrix 

L .IIUC ,mc pl.~cc IU the right 

d t r1IcrI.i Marlmum Conccntratlon 

((‘MC‘) = Ihe h\ghcsI concentration of a 

p)llul.~nl IO uhlch aqu~llc llfc can be cxpod fur J short pcrmd of tlmc (l-hour 

JbcrJgc) ulthout dclcrcrlous cfTccts. Critcr1.1 Conlinuous Concentration (CCC) = 

rhc hl8hcsI concenIratlon of a pollutant IO 

which ,I~UIIC hfc can bc exposed for an 

cxrcndcd pcrlod of tlmc (4 days) without 

dclctcrtoub clfcctb. ug/ L = micrograms 

per liter 

c t’rcshwdtcr aquattc life criteria for 

Ihc\c rncIJl> arc cxprcsscd as a function 

of 1ut.11 hardness (mg/L). and as a funcIton of Ihc pollutant’s waIcr cKcct ratio. 

WFK. .I\ dchncd In 5131 36(c) The 

cquJtlurl> Arc prubldcd In matrix at 

§ I31 )6(b)(?) Valuch driplayed above In 

Ihc maIrlx corrcbpond to a total hardness 

of 100 mg’l. and a w;IIcr cffcct ratlo of 

IO 

f f-rc\hwJIcr Jquat~c llfc criteria for 

pcnI~~<hlorophcnol arc cxprcsscd as a 

funcrlun of pti. and arc calculated as follow\ 1’alucs dlspla!cd above In the maIrlx correspond IO a pH of 7 8 

(‘\iC = cxp( I OOS(pH) - 4 830) CCC = 

cxpt I ooS(pH) - 5 290) 

g :\~U.IIIC llfc crltcrla for thcsc compuundb wcrc Ibbucd In 1980 uIilIzIng the 

1980 Gu~dcl~nc~ fur crltcria dcvclopmcnt. 

lhc .IC’UIC \.~IucI \ho,un Jrc final acute 

\JIUC\ (f.Ai) *hlch bk the I980 Gu,dclrncs arc Inslantancous values as contrasted with a CMC which is a one-hour 

average. 

h. These totals simply sum the critcrla 

in each column. For aquatic life. there arc 

30 priority toxic pollutants with some 

type of freshwater or saltwater. acute or 

chrome critcrla. For human health. there 

arc 91 priority toxic polluIants with elthcr 

“water + fish” or “fish only” criteria. 

Note that these totals count chromium as 

one pollutant even though EPA has dcvclaped crltcria based on IWO valence states 

In the matrix. EPA has assigned numbers 

Sa and Sb to the criteria for chromium to 

retlcct the fact that the hst of I26 priority 

toxic pollutants includes only a single listIng for chrormum. 

I. If the CCC for total mercury exceeds 

0.012 ug/L more than once in a 3-year 

period in the ambient water, the edible 

portion of aquatic spccics of concern must 

be analyzed to determine whcthcr the 

concentration of methyl mercury exceeds 

the FDA action level (I .O mg/kg). If the 

FDA action level is exceeded. the State 

must notify the appropriate EPA Regional AdminisIrator. Initiate a revision of its 

mercury crilcrion in 11% water quality 

sIandards so as to protect dcsrgnatcd uses, 

and take other approprIaIc actIon such as 

Issuance of a fish consumption advisory 

for the affccIcd area. 

J. No critcrta for protcctlon of human 

health from consumption of aquatic organisms (cxcludmg water) was presented In 

the 1980 criteria document or in the 1986 

Quality CritcrIa for Water. Nevcrthcless. 

sufficient information was presented In 

the 1980 document to allow a calculation 

of a crltcrion. even though the results of 

such a calculation were not shown in the 

document. 

k. The crlIcrlon for asbcsIos is the 

MCL (56 FR 3526. January 30, 1991) 

I. This letter not used as a footnote. 

m. Criteria for Ihcsc mcrals arc cxprcsscd as a function of the water c!Tcct 

ratio, WER. as defined In 40 CFR 

131.36(c) 

CMC = column BI or Cl baluc X WER 

CCC = column B? or C2 baluc X WER 

n. EPA IS nut promulgating human 

health critcrla for IhIs contammant. However, permrI auIhorlIlcs should address 

this contaminant In %PDES pcrmlt actlons using the St31c’s cxlbtlng narrative 

criteria for Ioxlcs 

General I\;oIcs 

1. This chart IISIS all of EPA’s prlorlty 

toxic pollutants whether or not criteria 

recommendations arc available. Blank 

spaces indlcatc the absence of criteria recommendations. Bccausc of variations in 

chemical nomenclature systems. this lirting of toxic pollutants does not duplicate 

the listing in Appcndlx A of 40 CFR Part 

423. EPA has added the Chemical Ab 

stracls Scrvlcc (CAS) registry numbers, 

whrch provrdc a unrquc IdcnIlfication for 

each chcmlcal. 

2 The followlng chcmlcals have organolcptrc based crltcrla recommendations 

that arc not lncludcd on this chart (for 

reasons which are dlbcusscd rn the prcamblc). copper. zinc, chlorobcnzcne. 2chle 

rophcnol. 2.4-dichlorophcnol, accnaphthcnc. 2.4-dlmethylphcnol, 3-methyl-4- 

chlorophcnol. hcxachlorocyclopentadicnc, 

pcntachlorophcnol, phenol 

3. For purposes of IhIs rulemaking, 

freshwater crltcrta and saltwater criteria 

apply as speclficd tn 40 CFR I31 36(c). 

(2) Facrors /or C‘alcularrng Merals 

Crirrrta 

CMC-WER cxp{m~(ln(hardncss))+b~~ 

CCC-WL:R 

cxplmc [ In( hardncsb) J + bc.1 
CMC-WER exptm~[ln(hardness)]+b~t CCC-WER exptmc[ln(hardness))+bcl 

Cadmum 

Gwwr 

Chromwm (III) 

Lesd 

Nckel 

SllVW 

Zmc 

Note The lerm exp represenrs lhe base e exponenml luncl~on 

ml b* 

1 128 -3828 

09422 -1 464 

0 8190 3688 

1 273 -1 460 

08460 33612 

1 72 -652 

00473 08604 

mc k 

07052 -3 490 

08545 -1 465 

0 8190 1561 

1273 -4 705 

08460 11645 

0 a473 0 7blJ 

(I) The crltcrla In p,lrJpr.lph (b) of thlc 

sccllon apply to [he Sr.ltc\’ dc~lpn.~rcd 

uses c~tcd III paragraph (d) of rhls sectIon 

and supersede an) crI(cIIa adopted b) rhe 

Stare, cxcepr when Slate regulations contaln cII{crla which arc murc htrlngenr for 

a particular use In which c~\c rhc St.~tc‘s 

crilcria will contlnuc to .~pply 

(2) The crIkr!d e>rJbllshcd 111 this KC- 

(ion arc bubJccl 10 rhc Slrllc‘b gcncrJI 

rules of applrcablllly 111 Ihc same waj and 

IO !hc same CXIC~I .1\ arc’ ~hc olhcr nurncrIC IOXIC~ CTiIc’r1J when appl~cd to the \am(: 

use classificarlons including mlxlng 7oncs. 

and low flow values bclou u hich numcrlc 

standards can bc exceeded In tloulng 

fresh waters 

(i) For all waters ul\h mlxlng ronc regulations or Implcmcntation procedures. 

the cliterla apply al the approprldtc Iotat~ons wl[hrn or ai the boundar) of rhc 

mixing zones. orhcrwtsc fhc criteria apply 

throughour the walcrbodh inctudlng a[ 

the end of any discharge p~pc. canal or 

other discharge point 

(ii) A S~atc shdll nut UK .I low tlow 

value below which nurncrIc‘ \t.ind.lrd\ can 

bc cxcccdcd that IS Ic\\ \rrlngcnt th.ln the 

following for w.~tcr\ \u~~,~blc f<~r lhc c\[.~btrshmcnr of low How return frcqucnclcs 

(i c , stream\ and rlberh) 

Aquallc LIIS 

Acute crlleria (CMC) 1010or1B3 

Chronc crllerla (CCC) 7OlOor4B3 

Human Health 

Non-carcinogens 

C8WWJW3S 

30 0 5 

Harmontic mean flow 

Where 

CMC-crllcria maxlmum conccnlralion--the water qualr~) c‘rrtcrra to protccr 

agarnst acuk ctTccls nri .~quirc 11le clnd IS 

the. hlghcst Insrrcam conccntrallon of a 

prlorlry lox~c pollur.lnr con\lsllng of ~1 

one-hour abcrapc not IU be cxcccdcd more 

thdn once every three jears on rhc avcr- cable crltcrla arc the sJl\uarcr c‘r1lcrl.l 111 

3gc. Column C. and 

ccc -crileria conllnuous conccnlralion--the waler qualIly crikrla 10 protccr 

against chronic cffcc~ In aquatic life IS 

the highest insrrcam conccntralion of a 

priority toxic pollulant consisling of a 4. 

dab average not IO bc cxcccdcd more than 

once every three years on the average. 

I Q IO IS the lowest one day flow ul[h 

an average rccurrcncc frcqucncy of once 

In IO years dckrmincd hydrologlcally. 

I I3 3 I\ bloloyically based and indicates 

,111 allouablc cxcccdcncc of once every 3 

years. It 15 dclcrmincd by EPA’s compurcrazed method (DFLOW model). 

7 Q IO is the lowest average 7 consccu- 

~IVC day low tlow with an average rccurrcncc rrcqucncy of once in IO years dctcrmined hydrologically; 

(III) For waters In which rhc \Jllnl[> I\ 

between I and IO parts per \huu\.lnd .I\ 

dcfincd In paragraphs (c)(31 (I) Jnd (II) d 

this section. the appllcablc c‘rllcrl.1 Jrc rhs 

more stringent of the frcshu.itcr err 

sal\w31er criteria tlowc\cr. \hc Kcgidn.11 

Adminis[ralor ma) appro\s rhc UK uf the 

allcrna!lvc frcshuatcr or sal\uu[cr c‘rllcria if scIentifically dcfenbiblc ~nform.~tion 

and data demonstrate that un .I \~tc-\pc 

cific basis the biolog) of the uJ\crbodj I\ 

domlnutcd by CrcshuJ[cr .~qu.l[~c talc JII~ 

that frcrhualcr cTilcrIJ arc nI,)rc’ Jppr<l 

prlalc. or convcrsclb, the blolog! ,l!’ ~hc 

waterbody IS domlnared b> ,.Llludtcr 

aqualic II~C and that sa1tuJlc.r crllcrI.1 .irc 

more appropriak 

4 B 3 IS bIologIcally based and indlcalcs 

an allowable excccdcncc for 3 consccu~lvc 

days once cvcry 3 years. It IS dctcrrnlncd 

b> EPA’s computcrizcd method 

(DFLOW model); 

30 Q 5 is the lowest average 30 consecUIIVC day low flow with an average rccurrencc frequency of once in 5 years dclcr. 

mlncd hydrologically; and the harmonic 

mean flow 1s a long lcrm mean flow value 

calcul~tcd by divldlng the number of dal. 

I) flows analyzed by the sum of the 

rcclprocals of those dally flows 

(I~I) If a State dots not have such a low 

How value for numeric standards complldncc, then none shall apply and the critcTia Included in paragraph (d) of this scc- 

(ion herein apply at all flows. 

(3) The aquatic life criteria in the matrix In paragraph (b) of this section apply 

iis follows: 

(4) .+p/lCC2Jit,n Oj- ~?l<‘~‘J~,\ irilc’rlc, 

(I) For purposes of calculdtlnp frc>hwdlcr aquatic llfc critcrla for mcI.~l~ from 

the equations In paragraph (b)(Z) of lhl\ 

section. the mimmum hardncb\ alloucd 

for USC in those equalions shall not bc Its\ 

than 25 mg/l. as calcium carbonJtc. cbcn 

If the actual ambient hdrdncsh 15 Icbs th.ln 

?5 mg/l as calcium carbonale The IllJ~lmum hardness value for use 111 thtix 

cquatlons shall not exiccd JUU mp, I .I\ 

cakium carbonate. CIC’II I( [hr .~ctu.~l .*n, 

blent hardness IS grcJter IhJn 4~ n,g I 

as calcium cJrbonaic The >.imc pra~l 

SlOnS apply for CakUlatinp the ITICIJIS Crl 

IcTia for rhc comparisons probldcd fur in 

paragraph (c)(3)(111) of this scc‘\lon 

(II) The hardness values used shalt bc 

consistcnl with the design discharge conditions csIablishcd In paragraph (c)(Z) ol 

this section for flows and mixing zoncb 

(i) For waters in which the salinity is 

equal to or less than I part per thousand 

95R or more of Ihc lime. the appllcablc 

criteria are the frcshwarer criteria in Column B. 

(II) For waters in which the sallnl[y IS 

equal 10 or greater than IO parts per rhou- 

\and 95% or more of the tlmc. the appll- 

(Iii) The criteria for mclals (compound\ 

#l-II 3 in paragraph (b) of this SCC~IWI) 

arc cxprcsscd as lo131 recoverable 1-N 

pUr,XXCS of CalcUtatlng JqUJllc IIfC c‘rllcria for metals from the equJtlon\ In ~WIInote kf In the CrllcrlJ rnJlrl\ In p.lr.lgraph (b)(I) of this sectIon and rhc c~u.,- 

lions in paragraph (b)(Z) of thlh \CCIIU~. 

rhc water-ctTect ratlu ~‘r cunipulcd .I\ k, 
+ccific pollutanr’s acute or chronic tox~city values measured rn water from the site 

covered by the standard. divided by the 

rcspectrvc acute or chronic toxicity value 

In laboratory dilution water The watcreffect ratlo shall be assigned a value of 

I 0. cxcep~ where the permlttlng authorlty asslgns a dllTcrcnt value that protects 

the dcslgnatcd uses of the water body 

from the toxic CHCCIS of the pollutant, and 

is derived from suitable tests on sampled 

water rcprcsentatlvc of conditions in the 

affected water body, consistent with the 

design dlschargc condltrons established in 

paragraph (c)(2) of this section. For purposes of rhrs paragraph. the term acute 

toxicity value is the toxicity test results, 

such as the concantratccl 

half of the test organisms (i.e. YT! YOp”dr: 

tcr 96 hours of exposure (c g , fish toxicity 

ICSIS) or the cdccr concentration IO onchalf of the test organisms. (i.e., ECSO) 

after 48 hours of exposure (c-g, daphnia 

toxicity tests). For purposes of this paragraph. the term chronic value is the result 

from appropriate hypothesis testing or rcgrcssion analysis of measurements of 

growth, reproduction. or survival from llfc 

cycle. partial life cycle, or early life stage 

tests The dctcrminatlon of acute and 

chronrc values shall be according to current standard protocols (e.g. those pub 

llshcd by the American Soc~cty for TCSIlng Matcrlals (ASTM)) or other comparable methods For calculation of crltcria 

using site-specific values for both the 

hardness and the water ctTcct ratio, the 

hardness used In the equations in paragraph (b)(2) of this section shall be as 

required in paragraph (c)(4)(ii) of this 

section Water hardness shall be calculated from the measured calcium and magnesium Ions present. and the ratlo of calcium to magncslum shall be approximately 

the same in standard laboratory toxicity 

fcsrmg water as rn the SIIC water 

(d) Cr~rer~o /or Specrfic /ur~sdlrfions- 

(I) Rhode Island. EP.4 Region 1 

(I) All waters assigned IO the following 

USC classifications In the Water Quality 

Regulations for Water Pollution Control 

adopted under Chapters 46- 12. 42- 17. I, 

and 42-35 of the General Laws of Rhode 

Island arc subject to the criteria in paragraph (d)( I)(ii) of this section. without 

exception. 

621 Freshwater 6 22 Saltwater 

Class A Class SA 

Class 0 Class SB 

Class C Class SC 

(ii) The following criteria from the matrix in paragraph (b)(I) of this section 

apply to the USC classifications identified 

In paragraph (d)(I)(i) of this section. 

Us0 classlficatlon 

CbS¶ A 

Class B WUUl wlmro 

water rupply “M IS 

not dmgfuled. 

CbSS c. 

arsr SA. 

arsr s0. 

arsr SC Each of these class~hcabons IS aswgned 

the cnterla In 

Column DZ-Ul 

(III) The human health criteria shall be 

applied at the 10.’ risk level. consistent 

with the State policy. To determine ap 

propriatc value for carcinogens, see foolnote c In the criteria matrix in paragraph 

(b)(I) of this section. 

(2) Vwnonr. EPA Region I. 

(i) All waters assigned to the following 

USC classifications in the Vermont Water 

Quality Standards adopted under the authority of the Vermont Water Pollution 

Control Act (IO V.S.A.. Chapter 47) arc 

subject to the criteria in paragraph 

(d)(Z)(Il) of this scctlon. without exccp 

tlon: 

Class A 

Class B 

Class C 

(ii) The following criteria from the matrix in paragraph (b)(I) of this section 

apply to the USC classifications identified 

in paragraph (d)(2)(i) of this section. 

Use classlhcallon Applcabb cmerla 

Class A 

CIIISS 6 waters where Thfs class1hc8110” IS 

waler supply use IS amgned the cfltena 

cbslgnalfd 

CcCmn 81 -all 

Column 82-all 

Column Dl -all 

Class B wa10fs where 

watof suppry use IS 

not desqnared 

CbSS c These classldcatlons 

are amgned the cotOnJ II-i 

Column I31 -all 

Column BZ-alI 

Column D2-all 

(III) The hurndn health crltcrla shall be 

Jppllcd dl the Slate-prop& lO’rl,k IcvCl 

(3 j ivew Jersey. EPA Region 2. 

(i) All waters assigned to the following 

USC classifications in the New Jersey Administrative Code (N.J.A.C.) 7:9-4.1 et 

seq.. Surface Waler Quality Standards. 

arc subject IO the criteria in paragraph 

(d)(3)(11) of this scctlon. wlthout cxccp 

twn 

N.J.A.C 7.9-4. 

N.J.A.C. 7:9-4. 

N J A.C 7.9-4. 

N J A.C 719-4. 

K.J.A.C. 7.9-4. 

N J.A.C. 7 9-4. 

2(b) Class PL 

2(c): Class FW2 

2(d) Class SEI 

2(c). Class SE2 

2(f). Class SE3 

2(g) Class SC 

N J.A.C 7.9-4 13(a) Delaware River 

Zones I C, I D. and I E 

N J A C 7:9-4.13(b). Delaware River 

Zone 2 

X J A C 7.9-4 13(c), Delaware River 

Zone 3 

N J A C 7-9-4.13(d) Delaware River 

Zone 4 

N.J.A.C. 7.9-4.13(c) Delaware River 

Zone 5 

N.J.A.C. 7:9-4.13(f). Delaware River 

Zone 6 

(II) The followmg criteria from the matr~x rn paragraph (b)( I ) of IhJs section 

apply to the USC classlticatlons identified 

In paragraph (d)(3)(i) of this section: 

use clsssIflcatlon A‘@lclbb CfltOflJ 

PL (Freshwater Pme- These Cl~SSlfiCaIlOnS 

lands). Fw2 Jr* l rrhgnod the crlterra In. Cdumn 

81-all l xcopt rl02. 

105. 107. 108. 111. 

112. 113. 115. 117. 

118. 

Column BZ-all l xwp 

rlO5.107.1~. 111. 

112. 113. 115. 117. 

118. 119. 120. 121. 

122. 123. 124. me 

125 

Column Dl-all at a 

lo-’ flsk bvel .x~pI 

x23, 30. 37. 38. 12. 

68. 89. 91. 93. 104. 

105. r23. 30. 37. 38. 

42. 68. 89. 91. 93. 

104. 105. a1 a 1OJ 

nsk bvel. 

Column DZ-•ll l l 

lo-’ nrk bvel oxcop 

~23. 30. 37. 30. 42. 

68. 09. 91. 93. 104. 

105. 23. 30. 37. 38. 

42. 68. 89. 91. 93. 

104 105. II I lo-’ 

“Sk bvel 

PL (Salme Water P~ne. These CIaSSIflClllOnS 

Ianas) SE1 SE2 are ass~gnbd me enSE3 SC cerla m 
use classlhc4lKm rpplrable Crlterla 

Column Cl -alI except 

#102.105.107.108. 

111. 112. 113. 115. 

117. and 118 

Column C2-all except 

r105. 107. 108.111. 

112. 113. 115. 117. 

118. 119. 120. 121. 

122. 123. 124. and 

125 

Column D2-all at a 

lo-’ fllk level except 

123. 30. 37, 30, 42. 

68. 89. 91, 93. 104 

105. *23. 30. 37. 38. 

42. 68. 89. 91. 93, 

104. 105 at a 10-s 

nsh level 

Delaware Awer zones These classlflcatlons 

1c. 10. 1E. 2. 3. 4.5 are assqned the tn. 

ana Delaware Bay tena in 

zone 6 

Column 81 -all 

Column B2-all 

Column Dl-all at a 

10-O nsk level except 

*23. 30. 37. 38 42. 

68. 89. 91. 93. 104. 

105. *23. 30. 37. 38. 

42. 68. 89. 91. 93. 

104 105. at a 10-s 

risk level 

Column D2-all at a 

10-4 nsk level except 

r23. 30. 37. 38. 42, 

68, 89. 9t. 93. 104. 

105. ~23. 30, 37. 38. 

42. 66. 89. 91. 93. 

104. 105. at a 10-s 

risk level 

Delaware RWW zones These classdicatlons 

3.4. and 5. and Dela- are asstpnea the crtware Bay zone 6 tena I” 

Column Cl -all 

Column C2-all 

Column D2-all at a 

10-s nsk level except 

123. 30. 37, 38. 42. 

68. 89. 91. 93. 104. 

105. r23. 30. 37, 38. 

42. 68. 89. 91. 93. 

104. t05. at a to-6 

risk level 

(iii) The human health crttcria shall bc 

applied at the State-proposed I O.b risk lcvcl for EPA rated Class A. 61. and Bt 

carcinogens; EPA rated Class C carctno 

gcns shall be applied at 10-s risk level. To 

determine appropriate value for carcino 

gens, see footnote c. in the matrix in paragraph (b)(I) of this section. 

(4) Puerto Rico. EPA Region 2. 

(i) All waters assigned to the following 

USC classifications in the Puerto Rico Water Quality Standards (promulgated by 

Resolution Number R-83-S-I) are sub 

~cct to the criteria in paragraph (d)(4)(ii) 

of this section, without exception. 

Article 2.2.2-Class SB 

Article 2.2.3-Class SC 

Article 2 2.4-Class SD 

(it) The following criteria from the matrtx in paragraph (b)(l) of this section 

apply to the USC classifications identified 

in paragraph (d)(4)(i) of this section: 

Use clasdcahon Appkcable rmterla 

Class SO Thts Classlfxatlon IS 

assgnea the crlterla 

I”’ 

Column Bl-all. excepr 10. 102. 105. 

107. 108. 111. 112. 

113. 115, 117. ana 

126 

Column 82-all. except, 105. 107. roe. 

112. 113. 115. ana 

117 

Column Dl-all. oxcept 6. 14. 105. 112. 

113. and 115 

Column D2-all. except 14. 105. 112. 

113. and 115. 

Thla Classuicat~on IS 

asstpma the crlterfia 

I” 

Column Cl-all, except 4. Sb. 7. 8. 10. 

11.13.102.105.107. 

106. 111. 112. 113. 

115. 117, ana 126 

Column C2-all. ox. 

cepl 4. 5b. 10. 13. 

108. 112. 113. 115. 

ana 117 

Column D2-all, axcept. 14. 105. 112. 

113. ma 115. 

Class SB. Class SC 

(iii) The human health criteria shall bc 

applied at the State-proposed IO’ rusk Icvcl. To determine appropriate value for 

carcinogens, see footnote c. in the crttcrta 

matrix tn paragraph (b)( I ) of this section 

(5) Disrrrcr of Co/umbra. EPA Regron 

3 

(I) All waters assigned to the followtng 

use classifications tn chapter I I TIIIC 21 

DCMR. Water Quality Standards of the 

Dtstrict of Columbia are sublcct to the 

criteria in paragraph (d)(S)(ii) of this scction. without exception: 

I IO I .2 Class C waters 

(ii) The following criteria from the matrtx tn paragraph (b)(I) of this scctton 

apply IO the USC classification tdcnttftcd tn 

paragraph (d)(S)(i) of this section 

Use classduat00 

Class C 

Applrable cnterla 

Tn~s classlfxatfion 1s 

aswgnecl the add!- 

nonal crlterla 0n 

Colum B2-#lo. 118. 

126 

Colum Dl-•*t5. 16. 

44, 67. 68. 79.80.81. 

88. 114. 116. 118 

Colum D2-all 

(iii) The human health crttcrta shall bc 

applied at the State-adopted IO6 risk lcvCl. 

(6) Florida. EPA Kegrun J 

(i) All waters asstgncd to the folloutng 

USC classifications tn Ch.tpter 17-301 of 

the Florida Admtntstrdttvc Code (I c , 

tdcntificd tn Scctwn IT- 302 600) arc sub 

~cct to the criteria In prragraph (d)(6)(tt) 

of thts section. utthout crccptton 

Class I 

Class II 

Class III 

(ii) The followtng crttcria from the matrix paragraph (b)( I ) of this section apply 

IO the use classificattons Identified in 

paragraph (d)(6)(i) of thts section: 

Use clas.dcatlon Apphcable crlterla 

Class I This classification II 

assagned the crltena 

CZumn Dl-#lb 

Class II This classlhcat~on 1s 

and asqned the crlterla 

I” 

Class Ill (marine) &.i”,%l% 0 ‘L- * 14 

Class Ill (fresh water) The classtidcallon IS 

asslgned the (rlterla 

C:umn 02-•16 

(III) The human health crttcrtd shall bc 

applied at the State-adopted IO6 rusk IcvCl 

(7) .Mlchrgan. EP.l Rqpon 5 

(I) .All waters asstgncd to the followtng 

USC classtfications tn the Mtchtgan Dcpartmcnt of Natural Resources Commtsston General Rules. R 323 II00 dcstgnatcd uses. as dcftncd at R 323 1043 Dclintttons; A to N. (L.C.. tdcnttlicd tn Section 

(g) “Dcsignatcd USC”) arc SubJccl to the 

criteria in paragraph (d)(7)(it) of thts scclion. without exceptton 

Agriculture 

Navigation 

lndustrtal Water Supply 

Public H’atcr Supply at the Potnt of 

Water intake 

Warmwatcr Fish 
Use classhcatlon 

ExtraordInary Resource Wafers 

Ecologlcaily Sensttlve 

Wacerboav 

Nalural an0 ScenK 

Waterways 

Flshews 

(1) Trout 

(2) Lakes ana Reservovs 

(3) Streams 

(al Ozark tilgh 

lands Ecore- 

*aon 

(D) 0osron Mountalns Ecofq~on 

(c) Arkansas RW 

BI Valley 

Ecoreglon 

Id) Ouachifa 

MountsIns 

Ecoreglon 

(el TypIca, GUI! 

Coaslal Ecorego” 

(I) Sprmg Watermnuenced Gull 

Coastal Ecoregton 

lg) Leasl.allefed 

Della EcoreCJlO” 

(h) Channel.al 

terea Delta 

Ecoreglon 

Appkable crttma 

rhese e.es are each 

asslgnea Ihe cnterla 

,” 

Column Bl - a4 

5a 50 6 7 8 9 

10 11 13 14 

Coiumn B2- U4 

5a. 5b 6 7 6 9 

10 13 14 

(9) Ken-x. EPA KC~IUII 7 

(I) All uatcr\ ;I\\lpncd ICI rhc foll~~u~ng 

“\C c‘~J>.\l~lc‘JllOll I11 the h.in\.is Dcp.irtmcnt of Health and Envlronmcnt rcgulJ- 

[Ions. K A R 28-16-2Bb through K A R 

28-l6-28f. arc subyxl IO rhc criteria in 

paragraph (d)(9)(11) of thrb scctwn. ulthout cxcepiion 

Scctwn 2X- l6-21(d 

Sccllon (2)(:\)--Spccl.il 4qu.ilic l.ifc 

USC Walers 

SectIon (Z)(B)-Expected Aquatic 

Llfc Csc Walers 

Scclwn (Z)(C)-Rcstrlctcd A~ULIIIC 

Life I’sc Waters 

Use CIassIfIcahon Applicable crllerla 

Secllons (21(A) These ciass~factlons 

(2J1B) f2)(C are each ass8gnea all 

(6~C1 -fsrer,a in 

Ccl,,mn 81 all 

except 89 11 

13 102 105 

107 108 

111-113 115 

117 ana 126. 

Column 02 all 

elcepl a9 13 

105 107 108 

111.113 115 

1’7 119-12s 

ana 126 ana 

Co~bmn 02 all 

rlceyr r9 

112 113 ancl 

115 

Secllon 131 Th,s cfasslflcafdon is 

asqnea a11 crlterla 

,m 

Co,umn Dl ali 

ercept w9 12 

112 113 ana 

115 

(III) The human hc.llth c‘rl[crlJ Lhall be 

:rpltcd 31 the SrJrc-prqwcd IO” rl\b. lcb- 

( IO) (‘u/l,/ornru. k. P 4 HCflf’” Y 

(I) All ualcrs ~\blpncd Jn) ~qu.lllc tlfc 

ur human health uw cl.l\\lllc.lll(rn\ in the 

ii Jler Quality C‘untrol I’l.:n\ Ikjr [hc \JrloU$ BJ~I~S of the Sl.lrc ~“H.i\ln Plans”). 

JS amcndcd. adopt4 b! Ihc (‘.iIIforni;l 

SI~I~ U’alcr Rcwurcc\ C onlrol Hoard 

(“SWRCB”). except for ocean waters 

covcrcd by the \+‘;ltcr Quality Control 

Plan fur Ocean \\‘.ilcrs of Californl3 

(“Ocean Plan”) adopted b) the SU KC‘B 

ulth rcsolutwn Nurnbcr 00 ?7 on \larch 

22. 1990. arc subjccl 10 [hc crllcrl.1 III 

paragraph (d)( 10)(11) of this bcctwn. 

wIthout cxccptlon Thcbc crltcrld smcnd 

the portIons of rhc c\l\rlng SI~IC s!an. 

dJrds cunL~inrd in lhc ki\ln Pl.in\ >lorc 

pJrtlculJrly thcsc crtlcrI.1 Jmend *Jlcr 

~uJ(II~ crIIcr13 ~~lnl.!incd 111 the BJsln 

Plan <‘hJpterb hpcclljrng udtcr quaIll) 

objccrlves (the SIJIC cqurvalcnt of fcdcral 

ualcr qual~ry crI[crla) for rhc IOXIC polluIdnts ldcntlficd In paragraph (d)( l0)(11) 

of this scc‘(mn .Although the State has 

;idoplcd several use deslgnatlons for each 

of rhcsc u;llrr$. for purposes of this action. the zpccltic slJnd,trds IO bc appllcd 

,n p.irJgr.lph (d)( 10)(11) of thl\ \CCIIO~ 

Jrc b.lxd un Ihe prcwncc 111 .I11 UJIC~\ ()I 

\“IIIC .lL,UJrlc IlfC dC\l~“JllUrl Jrld thC 

prcwzncc or Jbsencc of Ihc %lLS use de>- 

ign.ilion (\luniclpJl ,ind durncblic buppl!) lScc BJsln f’l.!n\ for mc)rc dct.lllcd 

“\C dctlrllll~,rl\ I 
Other Indrgcnous Aqua11c Lrfe and 

Wrldlrfc 

Parual Body Cunr.rct Rccrcarron 

(II) The folIourn crrrcrra from the rn.r. 

trrx In paragraph (b)( I t of this Ircc‘rron 

apply 10 the use cl~\\rhcarruns rdcnrrticd 

rn paragraph (d)(7)(r) of this sectron 

Use classlllcauon 

Pubhc Water supply 

All other des!gnarbons 

This class~t~cat~on IS 

eSsvgned the cnlerla 

Ml 

Column 81 -all, 

Column B2-all. 

Column Dl-all 

These classtkatlons 

are assIgned the cm 

ferta m 

Column Bl -all. 

Column B2-all. 

and 

Column D2-all 

(III) The human health crrrcrra shall be 

applrcd a1 1hc S1arcadop1cd 10-s risk Icvcl. To determine approprratc value for 

carcinogens. see foolnote c in the crrtcrra 

matrix In paragraph (b)(I) of this sectron. 

(H) Arkansas. EPA Hegm 6 

(I) All warcrs .r\\rgncd ro the follourng 

USC Class1flC~IIun I n scclron 4C 

(Walcrbody u\cs) rdcnrrlrcd rn Ark.rn\As 

Dcpartmcnt of Pullurron Cunrrol and 

Ecology’s Regularion No 2 as amended 

and cnti1lcd. “Rcgula1ron Es1ablrshrng 

Waler Qualrty Srandards for Surface 

Waters of the S1atc of Arkansas” are sub 

JCC~ 10 the crrlcrra In paragraph (d)(E)(ii) 

of this section. wirhou1 cxccp1ion 

Exrraordrnary Resource Walers 

Ecologically Scnsrirvc Waterbody 

Na1ural and Scenic W’ateruays 

Frshcrrc\ 

(I ) Truur 

(2) Lakes and Rcacrvolrs 

(3) Slreams 

(a) Ol.rrk lirghland\ Ilcorcgron 

(b) Bo\1on hlounralns licorcgron 

(c) Arkansas Rrvcr Valley Lcorcgron 

(d) Ouachrra Mounrarns Ecorcgron 

(c) Typical Gulf Coastal Ecorcgron 

(f) Spring Waler-influcnccd Gulf 

Coaslal Ecorcgion 

(g) Lcasr-altcrcd Delta Ecorcgion 

(h) Channel-dIrered Della Ecoregion 

Domoric Waler Supply 

(II) The followrng crrrcrra from 1hc ma1rrx In paragraph (b)(l) of this scctron 

‘apply 10 the use classrfication idcnrrticd In 

paragraph (d)(X)(r) of rhrs secrron 

Use class~katm AppkabIe crllerla 

ExtraordInary Resource Waters 

EcoloQKally Senswe 

Waterbody 

Natural and Scent 

Waterways 

Flshenes 

(1) Trout 

(2) Lakes and ResOrvONS 

(3) Strerms 

(a) Ozark Highlands Ecorewon 

(bt Boston Mounlams Ecors~on 

(c) Arkansas RNer Valley 

Ecoreglon 

Id) Ouachlta 

Mountains 

Ecoreglon 

(et Typvzal Gulf 

Coastal Ecwegton 

(I) Sprq Waler. 

tnnuenced Gulf 

Coastal Ecoreg1on 

(9) Least~altered 

Delta Ecore- 

(hJ)?hannel-altered Delta 

Ecoreglon 

These uses are each 

asslgned the crlterla 

anColumn Bl- *4. 

Sa. 5b. 6. 7, 0. 9. 

10. 11. 13. 14 

Column f32- 14. 

5a. 5b. 6. 7. 6. 9. 

10. 13. 14 

(9) Kansas, EPA Region 7 

(i) All waters assigned to the following 

use classification in the Kansas Dcpartmen1 of Health and Environment rcgularrons. K A R. 28-l6-28b through K.A R 

28-16-281. arc sub)ccl 10 the crrlcrra In 

paragraph (d)(9)(ii) of this scc1ron, urthout exception. 

Scc1ion 28- 16-28d 

Scclron (Z)(A)-Special Aquatic l.Ifc 

Use Walers 

Section (Z)(B)-Expected Aqua1ic 

Life Use Walers 

Section (Z)(C)-Res1ric1cd Aquatic 

Life Use Walers 

Section (3)--Domcs1ic Water Supply 

Sccrron (6)(c)-Consumptive Rccrcation Use 

(ii) The following crr1cria from the matrix in paragraph (b)(l) of this section 

apply IO the use classifications identified 

in paragraph (d)(9)(i) of this section 

use cIassIfIcatbon Appkable criteria 

Secllons (2)(A). These class~laclions 

(2)(B). (2NCi are each asstgned all 

VW) cr,1er,a lP 

Colbmn 01 alI 

except r9 I1 

13 102 105 

107 106 

111 113 115 

117 and 126 

Column 02 all 

except a9 13 

105 107 108 

111-113 115 

117 119-125 

an0 126 and 

Column D2 all 

ercep1 r9 

112 113 and 

115 

SectIon (3) This class~ficatlon IS 

assbgned ail crlcer#a 

I” 

Co’umn 01 ail 

ercepl 89 12 

II2 113 ana 

115 

(III) The human health crrrc’rr.! \h~ll bc 

dpplrcd a1 the Srarc-propo\cd IO” rr\h lcvCl 

( IO) ~bllfhlru. t. I’ 4 Kqycm v 

(i) All wa1crs abs~pncd .Inb .I~U.I~IC lllc 

ur human hc.rlth use ~I.I\\I~Ic..III~~II\ rn rhc 

Warcr Qualrty Conlrul I’l.in\ It11 Ihc v%rrrous Basins of the StJIc (“B.i\rn f’t.rn\“t. 

as amcndcd. adopted by rhe (‘Jlrfornr~ 

State Water Resource\ Cunrrol Bo.rrd 

(“SWRCB”). except fur uccJn u.ilcrh 

covered by the Water Qua111v C‘unrrol 

Plan for Ocean Walers of Californra 

(“Ocean Plan”) adopted by the SWRCB 

with resolution Number 90-27 on \l.!rch 

22. 1990. arc subjecr 10 the crrlcrra In 

paragraph (d)( 10)(11) of rhrs scc‘rrun. 

wrthour cxccprron Thcsc crrrcrr.r .rrncnd 

1he portions of the cxr\rrng Sr.rrc \r.rrldards conmined in 1hc B.r\ln f’l.rn\ \lorc 

partrcularly thcsc crltcrrJ amend u.itcr 

qualit) crr1crra cunr.lrncd rn the B.r\rn 

Plan Chap1crs spccrlyrng w.rrcr qu~llt! 

ObJcclivcs (the S13tc cqu~\.~lcnt uf I’cJcr.11 

uakr qualily crltcris) fur Lhc luxlz pdlutants rdcntrfrcd In paragraph (d)( lO)r!rt 

of this section. Although 1hc Srarc h.rs 

adopted several USC dcsigna1rons for each 

of these walers. for purposes of 1hrs ac1ion. the specific srandards 1o bc applrcd 

In paragraph (d)( 10)(11) of rhlb wc‘tlon 

arc based on the prcsencc In ~111 wa1crs uf 

some aqualic lrfc design.irron and rhc 

presence or absence of 1hc hlC’% use dcs. 

ignation (Municrpal and damcsrrc supply) (See Basin Plans fur more dcr.crlcd 

USC dctinrtrons ) 
III) The foliowIne crltcrlu from the ma- defined In paragr.lph (d)( IO)(t) or thl\ 

trlx In pardgrdph (b)(I) uf thl, xctwn \ccllon Jnd Idcnrlticd bclw 

apply to the ud(cr and UC classlhcatlonb 

Water ana use class1Ocatlon 

Walers 01 the Slate defmea as bays or estuarkes except the Sacramenlo-San Joaquln Della and San 

Framsco Bay 

Tnese waters are asshgnea the mena m 

Column I31 --pollutants 5a and 14 

Column W-pollutants 5a and 14 

Counn C 1 -pollutant 14 

Column CZ-pollutant 14 

Column DZ-pollutants 1 12 17 18. 21 

22.29. 30 32 33 37 30 42-44 46 48. 

49 54 59 66 67 68 76~62 85 89 90 

91 93 95 96 90 

Darers of lhe Sacramento-San Joaquln Della ana walers of the Slate deftned as mlana (I e all Su’faCe 

waters of me Slate not bays or estuaraes or ocean) Ihat rxluae a MUN use desqnallon 

Walers 01 Ihe Stare deflned as lnlano wlhout an MUN use deslpnabon 

Waters of lhe San JoaauNn Rcver from Ihe mouth of the Merced River lo Vernahs 

Walers of Salt Slough Mud Slougn (north) ana the San Joaquln River Sack Dam lo the mouth of the 

Mewed River 

Walers 01 San Francisco Bay upslream lo ana lnclvalng SUISU~ Bay and the Sacramento San Joaquln Della 

These nalers are ass~gred the cr!lerla I” 

Column 01 --po~~utanls Sa ana 14 

Column 02. padams 5a ana 14 

Column Dl-poilulanls 1 12 15. 17. 18 

21.22.29.30 32 33.37 38 42-48.49. 

59 66 66 76-62 05 89.90 91 93.95. 

96 98 

These walers are asstgned the cvlerla m 

C01mn 61 -polh~tants 5a ana 14 

Cokmn B2--pollutants 5a ana 14 

Column DZ-pollulanls 1. 12. 17 18, 21 

22 29 30 32 33 37 38 42-44.46.48 

49 54 59 66 67 60 70-02 85 09.90 

91 93 95 96 90 

In aactl8on lo lne cr lerla assfgned lo lhese walers elsewhere m In15 rule IheSe HalerS are 

assIgned the crfterla in 

Column EZ-w~lklanl 10 

In add,! 3” IO Ire cr#!er a assgned lo these wa 

ters elsewhere m lhls r;ile these walers are 

assqnea the cr8lwa m 

Column 81 -pollu1anr 10 

Column BZ-pollufanf 10 

These .valels are asSqned lhe crtlerla an 

Coi~mn 81 --pc lulanls 5a TO’ and 14 

Chrn B2~~po18Jranrs 5a 10’ and 14 

Cc,umr Cl m-pllJlanl 14 

Co(Jmr C2- poII,larrl 14 

Cavmr C2- p3IlJfanls 1 12, 17 18 21 

22 29 30 32 33 37 30 42.44,46,40 

49 54 59 66 67 66 70-82 85. 89.90 

91 93 95 96 90 

All Inland walws of the Unlled Slates of enclosed Days and estuanes that are walers of the Untied Stales 

lhal ~ncfude an MUN use desqnabon and thal the Stale has etthur srcluded or paftlally excluded from 

coverage under 11s Waler OurMy Control Plan for Inland Surface Waters of Callloma. Table5 1 and 2 or 

11s Waler ouallly CCJwOf Plan fof Encbsed Bays and Esiumes of Caltfoma. Tables 1 and 2. of has 

deferred l ppf0bMy of those lables (Category (a). (b). and (c) walers descmbed On paw 6 of Waler 

OuaMy Cantrd Plan for Inland Surface Waters of Cahforma or page 6 of 11s Wafer Ouallty Control Plan fof 

Enclosed Bays ana Esluanes of Callfornta ) 

‘vese baler> are assIgned the cmerla for polulanls for whlcn ine Stale does nof apply 

Table 1 or 2 slanaards These crlierla are 

C0i~rr.n El --all polluranfs 

Colum-7 02-all pollulanls 

CoiJmr Dl --all polI,ianls excepl r2 

All Inland walers 01 the Unllea Stales lhal do no1 mcluae an MUN use clesgnalon and that the Stale has 

etther excluded 01 panlarly excluded from coverage under 11s Water Ouahty Conlrol Plan for lnlanc 

Surface Walers of Callfornla Tables 1 and 2. of has aderred apphcabd~fy of these tables (Category ia) 

(bl and (cl walers descrtbed on page 6 of Waler Ouatlly Control Plan Inland Surface Waters of Callfornra ) 
Water ana use cIassIfIcallon Appkable crllerla 

f 

These waters are assIgned Ihe crllerta for polulanls for which the Stale does not apply 

Table I or 2 standards These cfllerla are 

Column 81 --all pollutanls 

Column f32-all polwants 

Column D2--a:1 pollutants except a2 

All entis8d bays and eSluaWS that are walers of the Un~led Stalewnd that IM Stale has eliher excluded 

Of pJr(lJfty OrCtudOd from COVWJQO under 11s Waler Ouallty Control Plan tor Inland SurfaCe Walers 01 

CalhxM. T8btas 1 l rul 2. or its Wataf OurMy Control PIan lor Enclosed Bays and Estuartes 01 Calllornia 

Tab&s I rnd 2. w h8s deferred appkabMy of those labtes (Category (a), (b). and (c) walers aescnbed 

M page 6 01 Water Oual~ty Control PIan lor Inland Surface Walers 01 Callforms or page 6 of 11s Waler 

tkellly Control Plan lof Enclosed Bays ana Esluarles 01 Calllornla ) 

These wafers are assigned the CrllWta for polulanls lor whvzh the Slale Ooes no1 apply 

Table I w 2 standards These crllerll are 

Column B I -all po;tutanls 

Column 02-all pollutants 

Column Cl --all pollutants 

Column C2-ali pollutants 

Column D2-all pollutants except l 2 

’ The fresh water aetehlum cntena are wuluded for the San Francisco Bay estuary because high levels of bloaccumulahon of selenium in the estuary lndlcale 

thet the SOIt waler crlterla bre underprotecllve lot San Francisco Bay 

(iii) The human health cri1crla shall be 

applied a1 the State-adopted ItY risk Icvcl. 

(I I ) Nevada. EPA Region 0 

(i) All waters assigned the USC classltications in Chapter 445 of the Nevada Adminis1ratwc Code (NAC). hcvada IVatcr 

Pollulion Conrrol Rcgulatlons. u hlch arc 

referred to tn paragraph (d)( I I)(II) of 

this scclion. arc subJec1 10 the critcrla In 

paragraph (d)( I l)(ii) of this hccrwn. 

wthout exception These crltcria amend 

the cxisltng State standards contained In 

the Ncvadu Water Pollution C‘ontrol Krguldtwn\ Marc partlcul.irl>. thsw crItcr1.L 

.tmcnd or wpplcmcnt the rablc of numcrWaler and use CIass~l~cal~on Appl’Cable tr8Ier8a 

Walers that the Stale has included in NAC 445 I339 where Munlc8pal or dOmeSIlt supply IS a Oesngnaled 

UM 

IC srandards In NAC 44S.1339 for the 

II)XIC pollutants ldcntlticd In paragraph 

(d)( I I )(II) of this sectIon 

(II) The follouing crltcrla from ma1rlx 

In pJragr%iph (b)( I ) of thl\ wctlon appl! 

IO the u.Itcr\ Jcllncti 111 p.\r.lgr,tph 

(d)! I I )I I) 01 lhl\ \cc‘lIon .Ind Idcntlllcd 

bclou 

These walers are asslgned the crltena in 

Column Fit -pollutant 8 1 16 

Column B2-pollulanl #I I6 

Column Dl-pollutanls #15 16. 16 19. 

20. 21, 23, 26 27. 29. 30. 3.4. 37. 3%. 42. 

43. 55. 56-62. 64 66. 73. 74. 76. 62. 85. 

87-89. 91, 92. 96. 98. 100. 103. 104 

105. 114 It6 117 118 

Walers that the Stale has included I” NAC 445 1339 where Murvclpal or domesrlc supply IS not a deslgnat 

ea use 

These walers are asvgned the Crblerta !n 

Column 01 --pol:ulant l 1 I8 

Coimn 02- pollutant 0 1 t 8 

Column 02-all pollutants except #2 

(111) The human health crltcrla shall be 

applied a1 the IO’ risk level. consistent 

with State @ICY. To dcterminc approprtate value for carcinogens. see foolnolc c in 

the criteria matrtx tn paragraph (b)(I) of 

this section 

(I 2) Alaska. EPA Region 10 

(i) All waters asslpncd IO the folloulng 

use clawficatlons In the Alaska AdmInIstra1wc Code (AAC). Chapter I8 (I c, 

tdentlhcd tn I8 AAC 70 020) arc sublcct 

IO the crltcrla In parupr;lph (d)( I I!)( 11) ,)I 

1hls scctwn. ulthout cxccptlon 

70 020 (I ) (A) Fresh Water 

70.020 (I) (A) Water SuppI) 

(I) Drinking, cullnary. and food proccssmg. 

(iii) Aquaculture; 

70 020 (I) (B) Water Recreation 

(I) Contact recreation, 

(ii) Secondary rccrcation. 

70 020 (I) (C) Grouth and prl,papntwn 

of li\h. \hcllti\h. other ;~qu.ltli I~fc. 

and ulldllfc 

70 020 (2) (A) Marlnc Water 

70 020 (2) (A) Waler SuppI! 

(I) Aquaculturc, 

70 020 (2) (8) IL’3Icr Kc~rc;itwn 

(I) contact rccrczttion. 

(II) sccundar) rccrcatlon. 

70020.(?) (C) Grwth and propagallon 

of fish. shellfish. other aquallc life. 

and wildllfc; 

70 020 (2) (D) Harvcsrlng for consumg 

tion of raw mollusks or other raw 

aqu.irlc II~C 

ADpllcable crllerla 

Column 81 -a11 

Column 

BZ-•rlO 

Column D( 
use ctasshcaton Aopllcable crtlerla 

8 s 2 16 16-21 

23. 26 27 29 

30. 32. 37 38 

42-44 53 55. 

59-62 64 66 

60 73. 74 78 

82 05 08 09 

91-93 96 98 

102-105. 

107-111 

117-126 

Cohmn 81 -all 

COlUrnll 

e2-•ro 

Column ox 

8 s 2 14 16 

1.3-21 22 23 

26 27 29 30 

32. 37 30 

42-44 46 53 

54. 55. 59-62 

64 66 68 73 

74 78 02 a5 

68-93. 95. 96. 

98. 102-105. 

107-111. 

115-126 

CoIwlne1--all 

Column 

e2--010 

Column 02 

d s 2 14 76 

18 21 22 23 

26 27 29 30 

32 37 38. 

42-44 46 53 

54 55 59-62 

64 66 68 73 

74. 70. 82 85 

86-93. 95. 96 

98. 102-105. 

107-111 

115-126 

Column C 1 -all 

Column 

C2-•rlO 

Column 02 

e s 2 14, 16 

18-21, 22 23 

26 27 29 30. 

32 37 30 

42-44, 46 53 

54 55. 59-62. 

64 66 68 73. 

74. 7a 02 85. 

88-93. 95. 96. 

98. 102-105. 

107-111 

115-126 

(111) The human health crltcria shall be 

applied at the State-proposed risk level of 

IO’ To determine approprlatc value for 

cdrcrnogcns. see footnote c In the crltcrla 

mdlrlx In paragraph (b)(I) of thl> sccllon 

( 13) Iduh. t’P.4 Xegwn 10 

(I) All waters assigned to the following 

ux clawhcatwns in the Idaho hdmlnr.r- 

~ratwc Procedures Act (IDAPA), Chap 

tcr I6 (l.c., Identified in IDAPA 

I6 01 ?lOO.O?-I6 01 2100.07) arc subject 

11) the crltcr1a In paragraph (d)( 13)(1ri ol 

thl\ scc!wn. ulthout exception 

IhO1 ?lOOOI b I)omcstlc U’Jtcr SupPllCS 

IhO1 ?lOOO!.a Cold Water 81013 

1601 !IWO! b Warm Water Biota 

16.01 2100 O?cc Sslmontd Spaunrng 

I6 01 !I00 03.a Prlmaq Contact Rccrcatwn 

16.0 I .2 IO0.03.b Scconddq Contact Rccrcation 

(II) The followvlng crltcrla from the matllx in paragraph (b)( I ) of this sewon 

apply to the USC clawlicatlons Idcntlticd 

In paragraph (dl( 13)(l) of thr\ xction 

Jse cIass01Ical0n 

01 0 

02 a 09 b 02 cc 

03 a 

03 0 

ApphcaOle cribma 

This class~hcal~on IS 

assIgned Itw crltwa 

1’1 

Column 01 -all 

e*clSpt a14 

and 115 

These ClJSSlhCJtlO~S 

are JSSlgWd Ihe C,Il,lJ In 

column 81-Jll 

column 82--JH 

Column ‘X--all 

The class~hcal~on IS 

JSSlQW3d the Crllerla 

111 

Column D2- all 

Thfs classlkallon 1s 

asslgned the crllerla 

I” 

Column 02- all 

(111) The human health crltcria shall be 

applied at the IO* risk level. corwstcnt 

\rlrh State polq 

( IA) H’uthrngw. t.P.4 KPR”‘” 10 

(I) All walers asslgncd to the following 

UC ciasstticatlons m the H’ashmgton Admlni~lratlvc C‘odc I H’A(‘). Chapter 

171-201 (I c. ldcn~lfrcd In H’AC 

I’]-201 -045) arc \U~JCCI IJ the crltcrld 

tn paragraph (dl(l4)(11) of this scct~on. 

*lthout cxccpr~vn 

17!-201-015 

I-lsh and Shcllfi,h 

Flih 

(II) The f~Jl,wlng crltcrla from the rnatrlx In paragraph (b)(I) of this scc(wn 

apply to the USC classlfi~atlons ldcntrficd 

in paragraph (d)( IJ)(I) of this sccIIon 

Use clafs~hcal~on A*p‘%Jt,lJ Cfltb(lJ 

Fish and Shellhsh. Fish These classrhcJlrons 

-r J,e JSWJWd the CW 

Waler Supply (domes These ClJSSlhCllOnS 

1IC) are asvgned the crbb3r5a .r 

Column 01 -Jll 

Recreab3n ThlS classlhcJlIon IS 

assigned Ihe cr11ef1a 

3” 

Column D2- 

Martne wJters 

an0 

IleShwJtOrs 

not prolecled 

lor oomestlc 

waler supply 

t111j The human hca!th crltcrla shall bc 

dppllcd at the SIJ!C propId risk Ic\cl of 

106 

[§131 36 added at 57 FR 60910. Dec. 22. 

I 9921