~ 

• ~ i' 

Chapter 173-201 W AC 

WATER QUALITY STANDARDS FOR SURFACE WATERS 

OF THE STATE OF WASHINGTON 

WAC 

173-201-010 lntruduction. 

173 -201- 025 Dcfinitions. 

173-201-035 Gcncral considcrations. 

173 201-045 Gcncral watcr use and critcria cla,.tics. 

173-201-047 Toxic substanccs. 

173--201-070 Gencral classifications. 

173-201--080 Spccific clasxifications--Fretihwuter. 

173-201-085 Spccific classifications---Marine watcr. 

173-201-090 Achicvcincnt considcrations. 

173--201-100 1 mplcmcntation. 

173-201-110 Survcillancc. 

173-201-120 Enforcemcnt. 

DISPOSITION OF SECTIONS FORMERLY CODIFIED IN 1'HIS 

CHAPTER 

173--201-020 Watcr usc and quality critcria. [Statutory Authority: 

RCW 90.48.035. 78-02-043 (Order DE 77- 32). § 

173--201-020, filcd 1/17/78: Ordcr 73-4, § 173-201- 

020, filcd 7/6/73.1 Rcpcalcd by 82-12--078 (Ordcr 

DE 82-12), filcd 6/2/82. Statutury Authority: RCW 

90.48.035. 

173--201 -030 Watcr usc and quality criteria•--Gcncral watcr uxc 

and critcria clas.scs. (Ordcr 73-4, § 173- 201-030, 

filcd 7/6/73.1 Rcpcalcd by 78--02-043 (Ordcr D1: 

77 32), filcd I/17/78. Statutory Authority: RCW 

90.48.035. 

173 201 040 W;itcr usc and quality critcria----Gcnc;ral cnnxidcrations. [Ordcr 73 4, § 173 201 -040, filcci 7/6/73.1 

Rcpealcd by 78--02 -043 (Ordcr Df; 77-32), filcd 

1/ 17/78. Statutory Authority: RCW 90.48.035. 

173 201 050 Charactcristic uscs to bc protcctcd. [Statutory Autharity: RCW 90.48.035. 78-02-043 (Order DE 77 

32), § 173--201--050, filcd 1/ 17/78: Ordcr 73- 4. ~ 

173- 201-050, filcd 7/6/73.1 Rcpcalcd by 82-12--078 

(Ordcr DE 82-12), lilcd 6/2/82. Statutory Authority: RCW 90.48.035. 

173-201-060 Wntcr wurtic clas.tiification. [Ordcr 73-4, § 173- 201- 

060, rilcd 7/6/73.1 Rcpcalcd by 78-02-043 (Ordcr 

DE 77-32), filcd 1/ 17/78. Statutory nuthority: 

RCW 90.48.035. 

173 201--130 Dcfinitions. [Ordcr 73--4, § 171-201- 130, filcd 

7/6/73.1 Rcpcalcd by 78-02--043 (Ordcr DE 77--32), 

Olcd 1/ 17/78. Statutory Authority: RC W 90.48.035. 

173-2111--140 Misccllancous. [Statutory Authority: RCW 90.48- 

.035. 78-02-043 (Ordcr Dli 77-32), § 173--201--140, 

filcd 1/ 17/78; Ordcr 73- 4, § 173-201- 140, filcd 

7/6/73.1 Rcpcalcd by 82-12-078 (Ordcr DE 82-12), 

filcd 6/2/82. Statutory Authority: RCW 90.48.035. 

WAC 173-201-010 Introduction. (1) The purpose 

of this chaptcr is to establish watcr quality standards for 

surface waters of the state of Washington consistent 

with public health and public enjoyment thereof, and thc 

propagation and protection ol' fish, shellfish, and wildlifc, pursuant to the provisiuns of chapter 90.48 RCW 

and the policies and purposes thereof. 

(2) This chapter shal) be rcvicwcd periodically by the 

dcpartment and appropriate revisions shall be 

undcrtakcn. 

(3) The water use and quality criteria set forth in 

WAC 173-201-035 through 173-201-085 are established in conformance with present and potential water 

uscs of the surface waters of the state of Washington 

and in consideration of the natural water qua[ity potentia[ and limitations of the same. These shall be the sole 

criteria for said waters. [Statutory Authority: RCW 90- 

.48.035 and 90.48.260. 88-02-058 (Order 87-6), § 173— 

201-010, filed 1/6/88. Statutory Authority: RCW 90- 

.48.035. 82-12-078 (Order DE 82-12), § 173-201-010, 

filed 6/2/82; 78-02-043 (Order DE 77-32), § 173— 

201-010, filed 1/ 17/78; Order 73-4, § 173-201-010, 

filed 7/6/73.1 

WAC 173-201-025 Definitions. (1) Background 

conditions: The biological, chemical, and physical conditions of a water body, upstream from the point or nonpoint source of any discharge under consideration. 

Background sampling location in an enforcement action 

would be upstream from the point of discharge, - but not 

upstream from other inflows. If several discharges to any 

water body exist, and enforcement action is being taken 

for possible violations to the standards, background 

sampling would be undertaken immediately upstream 

from cach dischargc. 

(2) Department: State of Washington department of 

ccology. 

(3) Director: Director of the state of Washington dcPartmcnt of ecology. 

(4) Hardness: A mcitsurc of the calcium and nlagnesium salts present in water. For purposes of this chapter, 

hardness is measured in milligrams per [iter as calcium 

carbonate (C„CO,). 

(5) Fecal coliforni: That portion of the coliform group 

which is present in the intestina[ tracts and feces of 

warm—blooded animals as detected by the product of 

acid or gas from lactose in a suitab[e culture medium 

within 24 hours at 44.5 plus or minus 0.2 degrees 

Cclsius. 

(6) Geometric mean: The nth root of a product of n 

factors. 

(7) Mean detention time: The time obtained by dividing a reservoir's mean annual minimum total storage by 

the 30--day tcn—year low—flow from the reservoir. 

(8) Permit: A document issued pursuant to RC'W 90- 

.48.160 et scq. or 90.48.260 or both, spccifying the wastc 

treatment and control requirements and waste discharge 

conditions. 

(9) pH: The negative logarithm of the hydrogen ion 

.conccntration. 

(10) Primary contact rt-crcation: Activities whcrc a 

person would havc dircct cuntact with watcr to the point 

. . .. (C'h..173-2ut. WAC-0 -11 
• - ~ , 

173-201-025 Water Quality

. 

 Standards 

of complete submergence, including but not liinited to 

skin diving, swimming and water skiing. 

(11) Secondary contact recreation: Activities wherc a 

person's water contact would be limited (wading or fishing) to the extent that bacterial infections of eyes, cars, 

respiratory or digestive systems or urogenital areas 

would normally be avoided. 

(12) Surface waters of the state: lnclude lakes, rivers, 

ponds, streams, inland waters, saltwaters, and all other 

surface waters and water courses within the jurisdiction 

of the state of Washington. 

(13) Temperature: Water temperature expressed in 

degrees Celsius ( °C). 

(14) Turbidity: The clarity of water expressed as 

nephelometric turbidity units (NTU) and measured with 

a calibrated turbidimeter. 

(15) Upwciling: Thc annuitl natural phcnonicnon 

wlicrc the summer prevailing, nortlicrly winds parallel tu 

Washington's coast produce a seaward transport of surface waters. Cold, deeper more saline waters rich in nutrients and low in dissolved oxygen rise to replace the 

surface water. The cold, oxygen deficient water flows 

into Puget Sound and other coastal estuarics rcplacing 

the deep water with lower dissolved oxygen conccntrations reaching the surface during late summcr and fall. 

(16) USEPA: United States Environmenta) Protcction 

Agcncy. 

(17) Wildlife habitat: Waters of the state used by 

fish, other aquatic life and wildlife for any life history 

stage or activity. [Siatutory Authority: RCW 90.48.035 

and 90.48.260. 88-02-058 (Order 87-6), § 173-201- 

025, filed 1/6/88. Statutory Authority: RCW 90.48.035. 

82-12-078 (Order DE 82-12), § 173-201-025, filed 

6/2/82; 78-02-043 (Order DE 77-32), § 173-201-025, 

filed 1 / 17/78.] 

WAC 173-201-035 General considerations. Thc following gcneral guidelines shall apply to thc water quality 

criteria and classifications set forth in WAC 173-201- 

045 through 173-201-085 hereof: 

(1) At the boundary between waters of different classifications, the water quality criteria for thc higher 

classification shall prevail. 

(2) In brackish waters of estuaries, where the fresh 

and marine water quality critcria differ within the samc 

classification, the criteria shall be intcrpolated on thc 

basis of salinity; except that the marine water quality 

criteria shall apply for dissolved oxygen whcn the salinity is one part per thousand or greater and for fecal coliform organisms when the salinity is tcn parts per 

thousand or greater. 

(3) The water quality criteria herein established shall l

not apply within an authorized dilution zone adjacent to 

or surrounding a waste-water discharge. 

(4) Waste discharge permits, whether issued pursuant 

to the National Pollutant `Discharge Elimination System 

or otherwisc, shall be conditioned in such manner as to 

authorize discharges which meet the water quality 

standards. 

(a) Howcver, persons discharging wastes in compliancc with the terms and conditions of permits shall not 

be subjcct to civil and crimina) pcnaltics on the basis 

- that dischargc violatcs watcr quality standards. 

(b) Pcrmits shall be subjcct to modification by thc 

dcpartmcnt whenever it appcars to thc dcpartment the 

-dischargc violates watcr quality standards. Modification 

of permits, as provided herein, shali bc subject to rcvicw 

in thc same manner as originally issucd permits.. 

(5) Nonpoint sources and water quality standards. 

(:t) It is recognizcd that many activitics not subject to 

a waste discharge permit systcm are now being performed in the state, which result in conflicts with the 

water quality standards of this chapter. Furthcr, thc dcpartment has not devcloped a program which, in a reasonablc or fully satisfactory manncr; providcs methods 

or mcans for mccting such standards. Persons conducting such activitics shall not be subjcct to civil or criminal 

sanctions for violation of watcr quality standards if the 

sictivitics are clther: 

(i) Conductcd in accordancc with maaagcincnt practices set forth by rulcs of the department. 

For examlc, promulgation of rcgulations by thc dcpartment which sct forth approvcd management prncticcs or othcr cfl7ucnt limits shall bc accomplished su 

tiiat activitics conductc:d within such rcgulations, (i.c., 

forest practiccs rules and regulations chaptcr 173 202 

WAC and 'Titic 222 WAC) will achicvc cumpliancc; with 

watcr pollution control laws. When thc rcgulations arc 

violated, the watcr quality standard can be enforced as 

dcscribcd in WAC 173-201-045 through 173--201-085; 

or, 

(ii) Subject to a regulatory order issucd by the department relating to specific activities as provided for in 

WAC 173-201-100(2). 

(b) Management practices or rcgulatory ordcrs describcd in WAC 173-201-035(5) hercol', shall bc subjcct to inudification by thc dcpartmcnt whcncvcr it 

appcars to the department that thc discharge viulates 

watcr quality standards. Modification of managerncnt 

practices or rcgulatory orders, as providcd hcrein, shall 

be subject to rcview in the samc nianner as thc originally 

issued management practices or rcgulatory ordcrs. 

(6) Thc watcr quality critcria hcrein cstablished for 

total dissolvcd gas shall not apply whcn thc titrcam tlow 

cxceeds the 7-day, 10 -year frequency flexod. 

(7) The total area and/or volunie of : ► rcceiving watcr 

atisigncd to a dilution zonc shall be as dcticribed in a 

valid discharge permit as necded and bc liniited to that 

which will: 

(a) Not cause acutc mortalitics of sport, food, or 

commcrcial fish and shellfish species of established biological communities within populations or important 

species to a dearce whic~~l~maees the ecosystem. 

(b) Not diminish aesthetic values or othcr beneficial 

uses disproportionately. 

(8) The antidegradation policy of the statc of 

Washington, as generally guidcd by chaptcr 90.48 

RCW, Water Pollution Control Act, and chaptcr 90.54 

RCW, Water Rcsourccs Act of 1971, is statcd as 

follows: 

IC.h 173-201 WAC—p 21 (1 /h/xx) 
/ 'r 

i, •' 

Water Quality Standards 173-201-035 

(a) Existing beneficial uses shall be maintained and 

protected and no further degradation which would interferc with or become injurious to existing bencficial uses 

will bc allowed. 

(b) No degradation will be allowed of waters lying in 

national parks, national recrcation areas, national wildlifc refuges, national scenic rivcrs, and othcr arcas of 

national ccological importancc. 

(c) Whenever waters are of a higher quality than the 

criteria assigned for said waters, the existing water 

quality shall be protccted and waste and other materials 

and substances shall not be ailowed to entcr such watcrs 

which wil) reduce the existing quality thereot; except, in 

those instances where: 

(i) It is clear that overriding considerations of the 

public interest will be served, and 

(ii) AIl wastes and other materials and substances 

proposed for discharge into the said waters shall be provided with all known, available, and reasonable methods 

of treatment before discharge. 

(d) Whenever the natural conditions of said waters 

_ are of a lower quality than the criteria assigned, the 

~ natura) conditions shall constitute the water quality 

criteria. 

(e) The criteria and special conditions established in 

WAC 173--201- 045 through 173-201-085 may be modified for a specific water body on a short-term basis 

when necessary to accommodate essential activities, respond to emcrgcncies, or to otherwise protect the public 

interest. Such modification shall be issued in writing by 

the director or liis/her designee subjcct to such terms 

and conditions as he/she may prescribc. The aquatic application of herbicides which result in water usc restrictions shall be eonsidered an activity for which a short-- 

tcrm modification generally may be issued subjcct to thc 

following conditions: 

(i) A request for a short-term modification shall bc 

madc to the department on forms supplied by the department. Such request generally shall be made at lcast 

thirty days prior to herbicide application. 

(ii) Such hcrbicide application shall bc in accordancc 

with state of Washington dcpartmcnt of agriculture 

regulations. 

(iii) Such herbicide application shall be in accordance 

with label provisions promulgated by USEPA under the 

Federa) Insecticide, Fungicide, and Rodcnticide Act, as 

amended. (7 U.S.C. 136, et seq.) 

(iv) Notice, including identification of the hcrbicide, 

applicator, location where the herbicide wil) be applied, 

proposed timing and method of application, and watcr 

usc restrictions shall be givcn sccording to the following 

requirements: 

(A) Appropriate public notice as determined and prcscribed by the dircctor or his/her designec shall be given 

of any water use restrictions specified in USEPA label 

provisions. 

(B) The appropriate rcgional officcs of the departinents of' fisheries and game shall be notified twentyfour hours prior to hcrbicide application. 

(C) In thc event of any fish kills, the departments of 

ecology, fisheries, and game shall be notified 

immediatcly. 

(v) The hcrbicide application shall be made at times 

so as to: 

(A) Minimize public water use restrictions during 

wcekends. 

( B) Completely avoid public water use restrictions 

during the opening weck of fishing season, Meniorial 

Day wcekend, July 4 weekend, and Labor Day weekend. 

(vi) Any additional conditions as may be prescribed 

by the director or his/her designee. 

(f) In no case, will any degradation of water quality 

be allowed if this degradation interfcres with or bccomes ~ 

injurious to existing water uses and -.causes long-term 

harm to the environment. ~ 

(g) No waste discharge permit will be issued which ~ 

violates established waleL except, as 

provided for under AC 173-201-035 (8)(e). 

(9) Due considera t ~--gi~er~- precision 

and accuracy of the sampling and analytical methods 

used as well as existing conditions at the time, in the 

application of the criteria. I 

(10) The analytical testing methods for these criteria 

shail be in accordance with the Guidelines &stablishing 

Test Procedures for the Analysis of Pollutants (40 

C.F.R. Part 136) and othcr or superseding methods 

published and/or approved by the department following 

consultation with adjacent states and concurrence of the 

USEPA. 

(11) Deleterious coneentrations of radioactive materials for all classes shall be as determined by the lowest 

practicable concentration attainable and in no case shall 

cxceed: 

(a) 1/ 100 of the values listed in WAC 402-24-220 

(Colunin 2, Table 11, Appendix A, rules and regulations 

for radiation protcction); or, 

(b) USEPA Drinking Watcr Regulations for radionticlides, as published in the Federal Register of July 9, 

1976, or subsequent rcvisions thereto. 

(12) Nothing in this chapter shall be interpreted to be 

applicable to those aspects of governmental regulation of 

radioactive wastes which have been preempted from 

state regulation by the Atomic Energy Act of 1954, as 

:iincnded, as intcrpreted by the United Statcs Supreme 

Court in the cases of Northern States Power Co. v. 

Minnesota 405 U.S. 1035 (1972) and Train v. Colorado 

Public lnterest Research Group, 426 U.S. 1(1976). 

(13) Nothing in this chapter shall be interpreted to 

prohibit the establishment of effluent limitations for the 

control of the thermal component of any discharge in 

accordance with Section 316 of the Fcderal Clean Water 

Act (33 U.S.C. 1251 et seq.). [Statutory Authority: 

RCW 90.48.035 and 90.48.260. 88-02-058 (Order 87-- 

6), § 173-201-035, filed 1/6/88. Statutory Authority: 

RCW 90.48.035. 82-12-078 (Order DE 82-12), § 173- 

201-035, filed 6/2/82: 78-02-043 (Order DE 77-32), § 

173-201-035, filed 1 / 17/78.] 

(1/6/88) [('h. 173-201 WAC'-p31 
t_ 

173-201-045 Water Quality Standards • 6 

WAC 173-201-045 General water use and criteria 

classes. The following criteria shall apply to the various 

classes of surface waters in the state of Washington: 

(1) Class AA (extraordinary). 

(a) General characteristic. Water quality of this class 

shall markedly and uniformly e xceed the requiremcnts 

for all or substantiallyall uses. 

-(b haraeteristic uses. Charactcristic uses shall include, but not be limited to, the following: 

(i) Water supply (domestic, industrial, agricultural). 

(ii) Stock watering. 

(iii) Fish and shellfish: 

Salmonid migration, rearing, spawning, and 

harvesting. 

Other fish migration, rearing, spawning, and 

harvesting. 

Clam, oyster, and musscl rearing, spawning, and 

harvcsting. 

Crustaceans and other shellfish (crabs, shrimp, crayfish, scallops, etc.) rearing, spawning, and harvesting. 

(iv) Wildlife habitat. 

(v) Recreation (primary contact recrcation, sport 

fishing, boating, and aesthetic enjoyment). 

(vi) Commerce and navigation. 

(c) Water quality criteria. 

(i) Feca[ coliform organisms. 

(A) Freshwater - fecal coliform organisms shall not 

exceed a gcometric mean value of 50 organisms/ 100 

niL, with not more than 10 percent of samples exceeding 

100 organisms/ 100 mL. 

( B) Marine water - fecal coliforni organisms shall not 

cxcecd a geometric mean value of 14 organisms/ 100 

mL, with not more than 10 per,cent of samples exceeding 

43 organisms/ 100 mL. 

(ii) Dissolved oxygen. 

(A) Freshwater - dissolved oxygcn shall excecd 9.5 

mg/ L. 

(B) Marine water - dissolved oxygen shall excccd 7.0 

mg/L. When natural conditions, such as upwclling, occur, causing the dissolved oxygen to bc depressed ncar or 

below 7.0 mg/L, natural dissolved oxygen levels can be 

degraded by up to 0.2 mg/L by man-caused activities. 

(iii) Total dissolved gas shall not exceed 110 percent 

of saturation at any point of samplc collcction. 

(iv) Temperature shall not exceed 16.0°C (freshwater) or 13.0°C (marine water) due to human activities. 

Temperature increases shall not, at any time, excced 

t=23/(T+5) (freshwater) or t=8/(T-4) (marine water). 

When natural conditions exceed 16.0°C (freshwater) 

and 13.0°C (marine water), no temperature increase will 

be allowed which will raise the receiving water tcmperaturc by grcater than 0.3°C. 

For purposes hereof, "t" represents the maximum 

permissible tcmperature increase measured at a dilution 

zone boundary; and "T" represents the background temperature as measured at a point or points unaffectcd by 

the discharge and representative of the highcst ambicnt 

watcr temperature in the vicinity of the dischargc. 

Provided that temperature increase resulting froni 

nonpoint source activities shall not exceed 2.8°C, and 

the maximum water temperature shall not excced 

16.3°C (freshwater). 

..(v) pN ,hall bc within thc rangc of 6.5 to 8.5 (freshwater) or 7.0 to 8.5 (marine watcr) with a man-causcd 

variation within a rangc of less than 0.2 units. 

(vi) Turbidity shall not exceed 5 NTU ovcr background turbidity whcn the background turbidity is 50 

NTU or less, or havc morc than a 10 perccnt increasc in 

turbiditv whcn thc background turbidity is morc than SO 

NTU. 

(vii) Toxic, radioactive, or delcterious matcrial c:unccntrations shall bc bclow thosc which may advcrscly 

affect charactcristic watcr uses, causc acutc or chronic 

conditions to the aquatic biota, or adversciy affcct public 

hcalth (scc WAC 173-201--047). 

(viii) Acsthctic values sliall not be inipaircd by the 

prcscncc of materials or thcir cffccts, cxcluding thosc of 

natural origin, whicii offcnd the scnscs of sight, smell, 

touch, or tastc. 

(2) Clas.s A (excellent). 

(a) Gcneral charactcristic. Watcr quality of this class 

shall mcct or cxcccd the rcquirernents for all or substantially all uses. 

(b) Charactcristic uscs. Characteristic uscs sha11 includc, but not bc liniitcd to, the ('ollowing: 

(i) Watcr supply (domcstic, industrial, agricultural). 

(ii) Stock watering. 

(iii) Fish and shcl[fish: 

Salnionid migration, rearing, spawning, antl 

harvesting. 

Othcr fish migration, rcaring, spawning, and 

harvcsting. 

Clani, oyster, and niusscl rcaring, spawning, and 

harvcsting. 

Crustaccans and othcr shcllfish (crabs, shrimp, craylisli, scallops, etc.) rcarinl;, spawning, and harvcsting. 

(iv) Wildlifc habitat. 

(v) Itecreation (priniary contact recreation, sport 

fishing, boating, and acsthetic enjoyment). 

(vi) Commcrcc and navigatiun. 

(c) Water quality criteria. 

(i) Fccal coliform organisms. 

(A) Freshwatcr - fecal coliform organisms shall not 

excced a gcometric mean value of 100 organisms/ 100 

ml_, with not more than 10 percent of sarnples exceeding 

200 organisms/ 100 mL. 

(B) Marine watcr -- fec:il coliforni organisms shall not 

exceed a gcometric rncan value of 14 organisms/ 100 

rnL, with not more than 10 percent of samplcs exceeding 

43 organisms/ 100 mL. 

(ii) Dissolved oxygcn. 

(A) Freshwatcr - dissoived oxygen shall cxceed 8.0 

mg/ L. 

(B) Marinc watcr - dissolved oxygcn shall excced 6.0 

mg/L. When natural conditions, such as upweliing, occur, causing the dissolved oxygcn to be dcpressed near or 

bclow 6.0 mg/L, natural dissolvcd oxygen levcls can be 

dcgradcd by up to 0.2 mg/1_ by man-caused activitics. 

(iii) Tuta) dissolvcd ga> >h<<11 not cxcecd 110 percent 

of satur. ► tion at any point of samplc collcx;tion. 

[Ch. 173-201 WAC-p 41 ( I; 6/xK) 

I 
Water Quality Standards 173-201-045 

(iv) Temperature shall not excced 18.0°C ( freshwater) or 16.0°C (marine water) due to human activities. 

Temperature inereases shall not, at any time, cxceed 

t=28/(T+7) (freshwater) or t=12/(T-2) (marine 

water). ' 

When natural conditions exceed 18.0°C (freshwater) 

and 16.0°C (marine water), no temperaturc increase will 

be allowed which will raise the receiving water temperature by greater than 0.3°C. 

For purposes hereof, "t" represents the maximum 

permissible temperature increase measured at << dilution 

zone boundary; and "T" represents the background temperature as measured at a point or points unaffected by 

the discharge and representativc of the highest ambicnt 

watcr temperature in the vicinity of the discharge. 

Provided that temperature increase resulting from 

nonpoint source activities shall not cxcced 2.8°C, and 

the maximum water temperature shall not excced 

18.3°C (freshwater). 

(v) pH shall be within the rangc of 6.5 to 8.5 (freshwater) or 7.0 to 8.5 (marine water) with a man--caused 

variation within a range of (css than 0.5 units. 

(vi) Turbidity shall not exceed 5 NTU over background turbidity when the background turbidity is 50 

NTU or le.ss, or have morc than a 10 percent incrcase in 

turbidity when the background turbidity is more than 50 

NTU. 

(vii) Toxic, radioactivc, or deletcrious matcrial conccntrations shall be below those which may adversely 

affect characteristic water uses, cause acutc or chronic 

conditions to the aquatic biota, or advcrscly affcct public 

health (scc WAC 173-201-047). 

(viii) Acsthetic values shall not bc impaired by thc 

presence of materials or their cffccts, excluding those of 

natural origin, which offend the scnses of sight, smcll, 

touch, or taste. 

(3) C.lass B (good). 

(a) Gcncral characteristic. Water quality of this class 

shall mect or excced the rcquircnients for most uses. 

(b) Characteris,t.ic uses. Characteristic uses shall includc, but not be limitcd to, thc following: 

(i) Watcr supply (industrial and agricultural). 

(ii) Stock wtttering. 

(iii) Fish and shellfish: 

Salmonid niigration, rcaring, and harvcsting. 

Other fish migration, rearing, spawning, and 

harvesting. 

Clam, oyster, . ► nd mussel rearing and spawning. 

Crustaceans and other shellfish (crabs, shrimp, crayfish, scallops, etc.) rearing, spawning, and harvcsting. 

(iv) Wildlife habitat. 

(v) Recreation (secondary contact recrcation, sport 

fishing, boatinb, and aesthetic enjoyment). 

(vi) Commcrce and navigation. 

(c) Water quality critcria. 

(i) Fecal coliform organisms. 

(A) Freshwater — fecal coliform organisms shall not 

exceed a geometric mean valuc of 200 organisms/ 100 

ml.,'with not tnorc than 10 percent of samrles cxcccding 

400 organitims/ 100 mL. 

(B) Marine water — fecal coliform organisms shall not 

exceed a geometric mcan value of 100 organisms./ 100 

mL, with not more than 10 percent of samples exceeding 

200 organisms/ 100 m L. 

(ii) Dissolved oxygen. 

(A) Freshwater — dissolved oxygen shall exceed 6.5 

mg/ L. 

( B) Marine water — dissolved oxygen shall excced 5.0 

mg/L. When natural conditions, such as upwelling, occur, causing the dissolved oxygen to be depressed near or 

below 5.0 mg/L, natural dissolved oxygen levcls can be 

degraded by up to 0.2 mg/L by man—caused activities. 

(iii) Total dissolved gas shall not exceed 110 percent 

of saturation at any point of sample collection. 

(iv) Temperature shall not exceed -21.0°C (freshwater) or 19.0°C (marine water) due to human activities. 

Temperature increases shall not, at any time, exceed 

t=34/(T+9) (freshwater) or t=16/T (marine water). 

When natural conditions exceed 21.0°C (freshwater) 

and 19.0°C (marine water), no temperature increase will 

be allowed which will raise the receiving water temperaturc by greater than 0.3°C. 

For purposes hereof, "t" represents the maximum 

permissible temperature increase measured at a dilution 

zone boundary; and "T" represents the background temperature as measurcd at a point or points unaffected by 

the discharge and representative of the highest ambient 

water temperature in the vicinity of the discharge. 

Provided that temperature increase resulting from 

nonpoint source activitics shall not exceed 2.8°C, and 

thc niaximum water temperature shall not excced 

21.3°C (freshwatcr). 

(v) pH shall be within the range of 6.5 to 8.5 (freshwater) and 7.0 to 8.5 (marine water) with a man--caused 

variation within a range of less than 0.5 units. 

(vi) Turbidity shall not exceed 10 NTU over background turbidity whcn the background turbidity is 50 

NTU or less, or have more-than a 20 percent increasc in 

turbidity when the background turbidity is more than 50 

NTU. 

(vii) Toxic, radioactivc, or deleterious material conccntrations shall be below those which may advcrsely 

affect characteristic water uses, cause acute or chronic 

conditions to the aquatic biota, or adversely affect public 

hcalth (see WAC 173-201-047). 

(viii) Acsthctic valucs shall not be reduccd by dissolvcd, suspcndcd, Iloating, ur submergcd inattcr not attributcd to natural causes, so as to affect watcr usc or 

taint the flesh of edible species. 

(4) Class C (fair). 

(a) General characteristic. Water quality of this class 

shall meet or exceed the requirements of selected and 

cssentia) uscs. 

(b) Characteristic uses. Characteristic uses sha11 include, but not be limited to, the following: 

(i) Water supply (industrial). 

(ii) Fish (salmonid and other fish migration). 

(iii) Recreation (secondary contact recreation, sport 

lishing, boating, and aesthetic enjoymcnt). 

(iv) Commercc and navigation. 

(c) Watcr quality critcria -- marine watcr. 

(1 /6/KX) lCh. 173-201 WA('-p 51 
Aldrin/Dicldrin. " 

Ammomia 

Cadmium 

C'hlurdanc 

--C'hlorinc 

Chhiropyrift 

Chroniium (Ilcx) 

Chromium (Tri) 

Copper 

Cyanidc 

1)I)T & Mctabolitics 

Fndusulfan 

F.ndrin 

I Ieptachlur 

I lcxachlarix:yclu 

hcx:uic ( I.indanc) 

I.c:id 

Mcrc:ury 

N ickcl 

Parathiun 

PC It'ti 

Pcntuchloruphcnul 

Scicnium 

Silvcr 

•"roxaphcnc 

%inc 

2.5w 0.0019` 0.71" 0.0019" 

b.y c.i 

d,v c.Z 43.0' `).3' 

2.4" 0.0043" 0.09" O.lN1.e 

19.(>•' 1I.0' 13.0) 7.5' 

O.OK V 0.041 0.011 ` 0.0056' 

16.oy 110 11 o0.0` so.0' 

t.y g.z 

h.y i.•. 2.')' 

22.0y S.2' 1.0` 

1.1 w 0.00 I" 0.13" 0.00 I` 

0.22'* 0.0S6` 0.034" O.00X7` 

0.18'" 0.0023` 0.037" 0.0023" 

I1.52" 0.003tt' 0.053" 0.(Nl.16` 

2.0"' O.UK" 0.16" 

j,y k.z 140.t}'' 5.6i 

2.4Y 0.012' 2.1 ~ 0.025' 

I,y m,. 75° 8.37 

0.06.5' 0.013' 

2.0" 0.014" 10.0l 0.03 % 

y,y r.y 13.0) 7.9' 

260.0"' 35.0` 410.0"' 54.0" 

n.w 2.3w - 

0.73y 0.0002' 0.21" 0.0002" 

o•y P.z 95.w 86.0' 

173-201-045 Water Quality.Statadards 

(i) Fecal coliform. organisms shall not exceed a geometric mean value of 200 organisms/ 100 mL, with not 

more than 10 percent of samples exceeding 400 

organisms/ 100 ml.. 

(ii) Dissolved oxygen shall exceed 4.0 mg/L. When 

natural conditions, such. as upwelling, occur, causing the 

dissolved oxygerr te be depressed near or below 4.0 

mg/L, natural dissolved oxygen levels can be degraded 

by up to 0.2 mg/L by man-caused activities. 

(iii) Temperature shall not exceed 22.0°C due to human activities. Temperature increases shall not, at any 

time, exceed t=20/(T+2). 

When natural conditions exeeed 22.0°C, no temperature increase will be allowed which will raisc the receiving water temperature by greatEr than 0.3°C. 

For purposes hereof, "t" represents the maximu ~ 

permissible temperature increase measured at a dilutibn 

7one boundary; and "T" represents the background temperature as measured at a point unaffected by the discharge and representative of the highest ambient water 

teniperature in the vicinity of the discharge. 

(iv) pH shall be within the range of 6.5 to 9.0 with a 

man-caused variation within a range of less than 0.5 

units. 

(v) Turbidity shal) not exceed 10 NTU ovcr background turbidity when the background turbidity is 50 

NTU or less, or have more than a 20 percent incrcase in 

turbidity when the background turbidity is morc than 50 

NTU. 

(vi) Toxie, radioactive, or deleterious material concentrations shall be below those which may adversely 

affect characteristic water uses, cause acute or chronic 

conditions to the aquatic biota, or adversely affect public 

health (see WAC 173-201-047). 

(vii) Aesthetic values shall not be interfercd with by 

the presencc of obnoxious wastes, slimcs, aquatic 

growths, or materials which will taint the flesh of ediblc 

species. 

(5) l.ake class. 

(a) General characteristic: Water quality of this class 

shall meet or exceed the requirements for all or substantially all uses. Is 

(b) Characteristie uses. Characteristic uses shall include, but not be limited to, the following: 

(i) Water supply (domestic, industrial, agricultural). 

(ii) Stock watering. 

(iii) Fish and shellfish: 

Salnionid migration, rearing, spawning, and 

harvesting. 

Other fish migration, rearing, spawning, and 

harvesting. 

Clam and mussel rearing, spawning, and harvesting. 

Crayfish rearing, spawning, and harvesting. 

(iv) Wildlife habitat. 

(v) Recreation (primary eontact recreation, sport 

fisliing, boating, and acsthctic enjoyment). 

(vi) Comnierce and navigation. 

(c) Watcr quality criteria. 

(i) Fecal coliform organisms shall not exceed a geometric mean value of 50 organisms/ l00 mL, with not 

more than 10 percent of samples cxcecding 100 

organisms/ 100 mL. 

(ii) Dissolved oxygen - no measurable decreasc f'rom 

natural conditions. 

(iii) Total dissolved gas shall not exceed 110 percent 

of saturation at any point of sample collection. 

(iv) Tcmperaturc ­ no measurable change frum natural conditions. 

(v) pH - no measurable change froni natural 

conditions. 

(vi) Turbidity shall not exceed 5 NTU over background conditions. 

(vii) Toxic, radioactive, or deleterious material concentrations shall be Iess than those which may affcct 

public health, the natural aquatic environment, or thc 

desirability of the water fur any use. 

(viii) Aesthetic valucs shall not be inipaircd by the 

presence of materials or their effccts, cxcluding those of 

natural origin, which offend the senscs of sight, smcll, 

-touch, or taste. [Statutory Authority: RCW 90.48.035 

and 90.48.260. 88-02­058 (Order 87-6), § 173--201- 

045, filed 1/6/88. Statutory Authority: RCW 90.48.035. 

82-12--078 (Order D E 82---12), § 171 -20 1-045, filcd 

6/2/82; 78-02- 043 (Ordcr DL 77-32), § 173 -201--045, 

liled 1 / 17/78. 1 

WAC 173-201-047 Toxic substances. (1) The following critcria shall apply to all surfitcc watcrs of the 

statc of Washington (valucs arc μg/L): 

Freshwatcr Mat<inc Water 

Substancc Acutc C:hronic Acutc Chnmic 

Notes to Tablc 

a. Aldrin is metabolic:ally convertcd to Dieldrin. 

Thereforc, the suni of the Aldrin and Dicldrin cuncentrations arc compared with the Dicldrin criteria. 

lCh. 173-201 WAC-p 61 (1 /6/xK) 

1 
Water Quality Standards 173-201-080 

b. <0.52/FT/FPH/2 

Where FT = 10 11.111 1211 U Ar); TCAP < T< 30 

10 tl.l),1 12t ► T), 0< T< TCA P 

FPH = I ; 1+ < pH <9 

1 + 10 '.a-pH 

FPH = ; 6.5 < pH < 8 

1.25 

TCAP = 20°C; Salmonids present 

TCAP = 25°C; Salnionidti abscnt 

c. :5 0.80/h°i'/FPH/RATIO 

Thc RATIO = 16 if; 7.7 < pH < 9 

TheRATIO=24x 11 ". ' 1 'll if;6.5 pH <7.7 

1 + 10 '-° -pH 

Where FT and FPH are as above except: 

TCAP = 15°C; Salmonids present 

TCAP = 20°C; Salmonids abscnt 

d. C e 11.12% lIn (h:vdne.c)) 

It1.71c52 (ln fltarJrxssl ~ + 1.4 ~ 111) C. < e 

f. < C 14.81 6 n1 lh r Ihardn~~. .)J + 3.6llal 

g. . 5c 

(u.xlINIn l ~ thardno.+)l + I. 361 ) 

h. < e (11.9422 JIn Ih:rrdnr.sil -I.464) 

t. C e 10.14545 lIn (hardn ~.~,..lt -I.465) 

.1• -< 

e (1 273 (In 1hardnc%.,1l -I.46I1) 

k. C e 41.271 lIn Ihardnc:01 - 4.7115) 

1• C e I.K4WI IIn (h:rrdrx.•~%lj t 1 i61?) 

m. C` I.x4td1 ~ In (hardiw:..)l + I.1(.151 

n• 

 

e { 1.73 J!n llt:ardnc+.)1 

U. < C 

( x47i lIn (lrrrdnr..)l + .libl>•1) 

P. e I.9471 lIn Ihardno..)) + .7614) 

e ~ I.Iw~lpll ► ~ 4.x301 

q • . 

r. c 

II.t1(l5(pll)-s.,1N,) 

w. An instantancous concentration not to bc cxcecdcd 

at any time. 

x. A 24 hour average not to be exceeded. 

y. A 1-hour average concentration not to be excecded 

more than once every thrce years. 

z. A 4-day average conccntration not to be cxceeded 

morc than once every three years. 

(2) USEPA Quality Criteria for Water, 1986 shall be 

used in the use and interpretation of the values listcd in 

subsection (1) of this section. 

(3) Conccntrations of toxic, and other substanccs with 

.toxic propensities not listed in subscction (1) of this scction shall be determined in consideration of USf:PA's 

Quality Critcria for Water, 1986, and as revi,cd, and 

othc:r relevant information as appropriatc. 

(4) Toxic substances shall not bc introduced abovc 

natural background levels in waters of the state which 

may adversely affcct characteristic water uses, cause 

acute or chronic conditions to the aquatic biota, or adversely affcet public health, as determined by the department. [Statutory Authority: RCW 90.48.035 and 

90.48.260. 88-02-058 (Order 87-6), § 173-201-047, 

filed 1 /6/88.] 

Reviser's note: The brackets and enclosed material in thc tcxt of the 

above scction occurred in thc copy filcd by the agcncy. 

WAC 173-201-070 General classifications. General 

classifications applying to various surface water bodies 

not specifically classified under WAC 173-201-080 or 

173--201-085 are as follows: - 

(1) A11 surface watcrs lying within national parks, national forests, and/or wilderness areas are classified 

Class AA or lake class. 

(2) All lakes and their feeder streams within the state 

are classified lake class and Class AA respectively, cxccpt for those feeder strealns spccifically classif'ied 

otlierwise. 

(3) AIl reservoir.s with a mean detention time of 

greater than 15 days are classified lake class. 

(4) All reservoirs with a mean detention time of 15 

days or less are classified the same as the river section in 

which they are located. 

(5) All reservoirs cstablished on preexisting lakes are 

classified as lake class. 

(6) All unclassified surface waters that are tributaries 

to Class AA watcrs are classified Class AA. A11 other 

unclassified surface waters within the state are hereby 

classificd Class A. [Statutory Authority: RCW 90.48- 

.035 and 90.48.260. 88-02-058 (Order 87-6), § 173- 

201-070, filcd 1/6/88. Statutory Authority: RCW 90- 

.48.035. 82-12--078 (Ordcr DE 82-12), § 173-201-070, 

filcd 6/2/82; 78-02-043 (Order DE 77-32), § 173- 

201-070, filed l/ 17/78; Order 73-4, § 173-201-070, 

filed 7/6/73.] 

WAC 173-201-080 Specific classifications-- 

Freshwater. Specific fresh surface watcrs of the state of 

Washington are classified as follows: 

(1) Amcrican River. Class AA 

(2) Big Quilcene River and tributaries. Class AA 

(3) Bumping Rivcr. Class AA 

(4) Burnt Bridge Creek. Class A 

(5) Cedar River from Lake Washington 

to Landsburg Dam (river mile 21.6). Class A 

(6) Cedar River and tributaries from 

Landsburg Dam (river mile 21.6) to headwatcrs. Special condition - no waste dischargc will be permiticd. Class AA 

(7) Chchalis Rivcr frum upper boundary 

of Grays !-larbor at Cosmopolis (river mile 

3.1, longitude 123°4545" W) to Scammon 

Creek ( rivcr mile 65.8). Class A 

(1 /h/ha) 1('h. 173-2111 WA('-p 71 
173-201-080 Water Quality Standards 

(8) Chehalis River from Scammon Creek (29) I)eschutes Rivcr from mouth to 

(river mile 65.8) to Newaukum River (river boundary of Snoqualmic National Forest 

mile 75.2). Special condition - dissolved ox- (river mile 48.2). Class A 

ygcn shall exceed 5.0 mg/L from June 1, to (30) Deschutes River from boundary of 

Septcmbcr 15. For the rcmainder of the Snoyualmie Nationa) F'orest (rivcr niilc 

year, the dissolved oxygen shall mcet C1ass 48.2) to headwaters. Class AA 

A criteria. - Class A (31) Dickey River. Class A 

(9) Chehalis River from Newaukum Ri- (32) Dosewallips River and tributarics. Clas, AA 

ver (river mile 75.2) to Rock Creck (river (33) Duckabush River and tributarics. Class AA 

milc 106.7). Class A (34) Dungencss Rivcr 1'rom niouth to 

(10) Chehalis River, from Rock Creek Canyon Creek (river milc 10.8). Class A 

(river mile 106.7) to headwaters. Class AA (35) Dungeness River and tributarics 

(11) Chehalis River, south fork. Class A from Canyon Creek (rivcr mile 10.9) to 

(12) Chewack River. Class AA headwaters. Class AA 

(13) Chiwawa River. Class AA (36) Duwamish Rivcr from niouth south 

(14) Cispus River. Class AA of a(ine bearing 254°true from the N W 

(15) Clearwater River. Class A corner of berth 3, terminal No. 37 to thc 

(16) Cle Elum River. Class AA Black Rivcr (river niilc 11.0) (Duwamish 

(17) Cloquallum Creek. Class A River continues as the Green River abovc 

(18) Clover Creek from outlet of Lake the Black River). Class [3 

Spanaway to inlet of Lake Steilacoom. Class A (37) Elochoman River. Clatis A 

(19) Columbia River from mouth to the (38) Elwha River and tributarics. Clasti AA 

Washington-Oregon border (river mile (39) Entiat River from Wenatclicc Na309.3). Special conditions - temperature tional Forest boundary (river inilc 20.5) to 

shall not cxceed 20.0°C due to human ac- headwaters. Class AA 

tivitics. When naturai conditions exceed (40) Grande Ronde River froni nioutli tu 

20.0°C, no temperature increase will be al- Orcgon border (river milc 37). Special conlowed which will raise the receiving water dition -- temperature shall not excccd 

temperature by greater than 0.3°C; nor 20.0°C due to human activitics. Whcn nat- - 

shall such temperature increases, at any ural conditions excccd 20.0°C, no tcmperatime, exceed 0.3°C due to any single source ture incrcase will be allowed which will raise 

or 1.1 °C due to aIl such activities combined. thc receiving water tcmperature by greater 

Dissolved oxygen shall exceed 90 perccnt of than 0.3°C; nor shall such tcmperaturc insaturation. Class A crcases, at any time, cxcecd t=34/(T+9). Clasti A 

(20) Columbia River from Washington- (41) Grays Rivcr from Grays Rivcr Falls 

Oregon bordcr (river mile 309.3) to Grand (rivcr mile 15.8) to headwatcrs. Class AA 

Coulee Dam (river mile 596.6). Special con- (42) Grccn River (Cowlitz County). Class AA 

dition from Washington-Oregon border (ri- (43) Grccn River (King County) from 

ver mile 309.3) to Priest Rapids Dam (river B1ack Rivcr (rivcr mile 11.0 and point whcre 

mile 397.1). Temperature shall not exceed Duwamish River continueti as the Grccn Ri20.0°C due to human activities. When nat- ver) to west boundary of Sec. 27--T21 Nural conditions exceed 20.0°C, no tempera- R6E (wcst boundary of Flaniing (;cyscr 

ture increase will be allowed which will raisc State Park at river milc 42.3). Class A 

thc. receiving water temperature by greater (44) Green River (King County) from 

than 0.3°C; nor shall such tcmperaturc in- wcst boundary of Scc. 27-T21 N-R6E (west 

crcascs, at any time, exceed t=34/(T+9). Clatis A boundary of T'laming Geyser State Park, ri- 

(21) Coluinbia River from Grand Coulee ver milc 42.3) to wcst boundary of Scc. 13-- 

Dam (river mile 596.6) to Canadian border T21 N-R7E (river itnile 59.1). Class AA 

(river mile 745.0). Class AA (45) Grecn River and tributaries (King 

(22) Colville River. Class A County) from wcst boundary of Scc. 13- 

(23) Coweeman River from mouth to T21 N-R7E (river mile 59.1) to hcadw:ttcrs. 

Mulholland Creck (river mile 18.4). Class A Special condition -- no watitc dischargc will 

(24) Coweeman River from Mulholland bc permitted. Class AA 

Creek (river mile 18.4) to headwatcrs. Class AA ,(46) Hamma Hamma Rivcr and tributar- 

(25) Cowlitz River from mouth to base of ics. Class AA 

Riffe Lakc Dam (river mile 52.0). Class A (47) Hanaford Creck from mouth tu cast 

(26) Cowlitz River from base of Riffe boundary of Sec. 25-T15N-R2W (river 

Lake Dam (river mile 52.0) to headwaters. Clas.s AA mile 4.1). Special condition -- dis.solvcd oxy- 

(27) Crab Crcck and tributaries. Class B gcn tihall excecd 6.5 mg/l.. Class A 

(28) I)cckcr Crcck. Cl:is.ti AA 

(cIL 173-201 wAC—P 81 
Water Quality Standards 173-201-080 

(48) Hanaford Creck from cast boundary (71) Nooksack Rivcr from Maple Creek 

of Scc. 25-T15N--R2W (river niilc 4.1) to (rivcr milc 49.7) to hcadwaters. Class AA 

headwaters. Class A (72) Nooksack River, south fork, from 

(49) }loh River and tributaries. Class AA mouth to Skookum Creck (river mile 14.3). Class A 

(50) Hoquiam River (continues as west (73) Nooksac:k River, south fork, from 

fork above east fork) from mouth to river Skookum Creek (river inile 14.3) to headmile 9.3 (Dekay Road bridge) (upper limit waters. Clas.s AA 

of tidal influence). Class B (74) Nooksack Rivcr, nliddle fork. Class AA 

(51) Humptulips River and tributaries (75) Okanogan River. Class A 

from mouth to Olympic National Forest (76) Palouse River from mouth to south 

boundary on cast fork (river milc 12.8) and fork (Colfax, river mile 89.6). Class B 

west fork (river mile 40.4) (main stem con- (77) Palouse River from soutli fork 

tinues as wcst fork). Class A (Colfax, river mile 89.6) to ldaho border 

(52) Humptulips River, east fork from (river mile 123.4). Special condition - temOlympic National Forest boundary (river perature shall not exceed 20.0 °C due to humile 12.8) to headwaters. Class AA nian activitics. When natural conditions 

(53) Humptulips River, wcst fork from exceed 20.0°C, no temperature increase will 

Olympic National Forest boundary (river bc allowed which will raise the receiving 

mile 40.4) to headwaters. Class AA water tcmperaturc by greater than 0.3°C; 

(54) Issaquah Crcek. Class A nor shall such temperature increases, at any 

(55) Kalama River 1'rom lowcr Kalama timc, cxcccd t-34/(T+9). Class A 

River Falls (rivcr mile 10.4) to hcadwaters. Clatis AA (78) Pcnd Orcille Rivcr from Canadian 

(56) Klickitat Rivcr from Littic Klickitat bc>rdcr (river mile 16.0) to Idaho border (riRiver (river mile 19.8) to headwatcrs. Class AA ver niilc 87.7). Special condition - tempera- 

(57) Lake Washington Ship Canal froni ture sh.ill not exceed 20.0°C due to human. 

Government Locks (river mile 1.0) to Lake activities. When natural conditions excecd 

Washington (river mile 8.6). Special condi- 20.0°C, no tcmperature increase wil) •be altion - salinity shal) not excced onc part per lowed which will raise the receiving water 

thousand (1.0 ppt) at any point or depth tcmperature by grcater than 0.3°C; nor 

along a line that transects the ship canal at shall such teniperature increases, at any 

the University Bridge (river mile 6.1). Lake Class tinic, excced t=34/(T+9). Class A 

(58) I_ewis River, east fork, from Multon (79) Pilc;huck River from city of 

halls (river mile 24.6) to hcadwaters. Class AA Snohoniish Waterworks Dam (river mile 

(59) Little Wenatchee Rivcr. Class AA 26.8) to headwaters. Class AA 

(60) Mcthow Rivcr from mouth to (80) Puyallup Itivcr from mouth to river 

Chewack River (rivcr niile 50.1). Class A milc 1.0. Class B 

(61) Methow River froni Chcw,tck River (8 1 ) f'uyallup River frorn river mile 1.0 to 

(rivcr mile 50.1) to headwaters. C:iass AA Kings Creek (river mile 31.6). Class A 

(62) Mill Crcck from niouth to 13th (82) Puyallup River from Kings Creek 

street bridge in Walla Walla (river mile (rivcr niile 31.6) to headwatcrs. Class AA 

6.4). Special condition - dissolved oxygen (83) Qucets River and tributaries. Class AA 

concentration shall cxceed 5.0 mg/L.. Class 13 (84) Quiliayute Rivcr. Class AA 

(6:3) Mill Crcek froin 13th Strcct bridge (85) Quinault Rivcr and tributaries. Class AA 

in Walla Walla (river milc 6.4) to Walla (86) Salnion Creek (Clark County). Class A 

Walla Waterworks Dam (river mile 25.2). Class A (87) Satsop River from mouth to west 

(64) Mill Crcck and tributaries from city fork (river mile 6.4). Class A 

of Walla Walla Waterworks Dam (rivcr (88) Satsop River, cast fork. Class AA 

mile 25.2) to licadwaters. Special condition (89) Satsop River, niiddlc fork. Class AA 

- no waste discharge will be permitted. Class AA (90) Satsop River, west fork. Class AA 

(65) Naches River from Snoqualmie Na- (91) Skagit River from mouth to Skiyou 

tional Forest boundary (river niile 35.7) to Slough-lower end (river mile 25.6). Class A 

headwaters. Class AA (92) Skagit River and tributaries (in- 

(66) Naselle River from Nasellc "Falls" cludcs Bakcr, Suak, Suiattle, and (~ascade 

(cascade at river mile 18.6) to headwaters. Class AA rivers) from Skiyou Slough-lower end, (ri- 

(67) Ncwaukum River. Class A ver niile 25.6) to Canadian border (river 

(68) Nisqually Rivcr from mouth to A1- mile 127.0). Class AA 

dcr Dam (river niilc 44.2). Class A (93) Skokomish River and tributaries. Class AA 

(69) Nisqually Rivcr froin Alder Dam (94) Skookumchuck Rivcr from Bloody 

(river mile 44.2) to headwaterti. Class AA Run Crcck (rivcr mile 21.4) to headwaters. Class AA 

(70) Nooksack River froni mouth to Mzplc C'rcek (rivcr milc 49.7). Class A 

t1/6/xxt '1Ch. 173-201 WAC-p 91 
173-201-080 Water Quality Standards 

(95) Skykomish Rivcr froni niouth to (106) Spokanc Rivcr froni Long Lakc 

May Creek (above Gold Bar at rivcr niile Dam (rivcr mile 33.9) to Ninc Mile f3ridge 

41.2). Class A (rivcr niilc 58.0). Special conditions: 

(96) Skykomish River from May Creek (a) Thc average euphotic zone cunccntra- 

(above Gold Bar at river mile 41.2) to tion of total phosphorus (as P) shall not cxheadwaters. Class AA cced 25μg/L during thc period ol' .lunc I to 

(97) Snake River from mouth to October 31. 

Washington-ldaho-Oregon border (river (b) Temperature shall not cxcecd 20.0°C, 

niilc 176.1) Special condition. duc to human activities. Whcn natural con- 

(a) Below Clearwater River (river mile ditions cxcced 20.0°C, no tcmperaturc in139.3). Temperature shall not exceed creasc wiil be allowcd which will raisc the 

20.0°C due to human activities. When nat- rcceiving water temperature by grcater than 

ural conditions exceed 20.0 °C, no tempera- 0.3 °C; nor shall such temperature increascti, 

ture increase will be allowed which will raise at any timc exceed t=34/(T+9). Lake Class 

thc receiving water temperature by greater (107) Spokanc Rivcr from Ninc. Milc 

than 0.3°C; nor shall such temperaturc in- 13ridgc (river mile 58.0) to thc Idaho bordcr_ 

creascs, at any time, exceed t=34/(T+9). (rivcr mile 96.5). Temperature shal) not ex- 

(b) Abovc Clearwater River (river mile cecd 20.0°C due to human activities. Whcn 

139.3). Tcmperature shall not exceed natural condition% excccd 20.0°C no tern20.0°C due to human activities. Whcn nat- perature increase will be allowed which will 

ural conditions exceed 20.0°C, no tempera- raise the recciving water teniperature by 

ture incrcasc wil) be allowed which will raise grcatcr than 0.3°C; nor shall such ternperathe receiving water temperature by greatcr turc incrcases, at any timc cxcccd 

than 0.3 °C; nor shal) such tcmperaturc in- t=34/(T+9). Class A 

creases, at any time, exceed 0.3 °C duc to ( IOx) Stchckin Rivcr. t'lass AA 

any single source or 1.1 °C duc to all such (109) Stillaguamish Rivcr 1'rom mouth to 

activities combined. Class A north and south I'orks (rivcr niile 17.8). Class A 

(98) Snohomish River from mouth and (1.10) •Stillaguamish Rivcr, north fork, 

east of longitude 122° i 3'40" W upstream to 1'rom mouth to •Squire Crcek (rivcr mi)c 

latitudc 47° 56'30"N (southern tip of Ebey 31.2). Clasti • A. 

Island •river mile 8.1). Special condition - ( I 1 1) Stillaguamish River, north fork, 

fecal coliform organisms shall not exeeed a from Squire C:reek (river mile 31.2) to 

geomctric mean value of 200, hcadwatcrs. Clas, AA 

organisms/ 100 mL. with not morc than 10 (1 12) Stillaguamish River, suuth fork, 

percent of samples exceeding 400 froni mouth to Canyon Crcek (river mile 

organisms/ 100 mL. Clasti A 33.7). Class A 

(99) Snohomish River upstream from lat- (1 13) 5tillagnamish River, suuth fork, 

itudc 47°56'30"N (southern tip of Ebey (s- I'rom Canyon Crcek (rivcr milc 33.7) to thc 

land river mile 8.1) to conflucnce: with hcadwatcrti. Class AA 

Skykomish and Snoqualmie River (river (1 14) Sulphur C'rcck. Clasti B 

mile 20.5). Class A (1 15) Sultan Rivcr from niouth to Chap- 

(100) Snoqualmie River and tributaries lain Crcck (river mile 5.9). Class A 

froni mouth to west boundary of Twin Falls ( I 16) Sultan River and tributarics froni 

State Park on south fork (river milc 9.1). Class A Chaplain Crcck (rivcr niilc 5.9) to hcadwa- 

(101) Snoqualmie River, middle fork. Clasti AA tcrs. Spccial condition - no watitc dischargc 

(102) Snoqualmie River, north fork. Class AA will be permittcd abovc city ot' Evcrctt Di- 

(103) Snoqualmie River, south fork, from vcrsion Dam (rivcr mile 9.4). Class AA 

west boundary of Twin Falls State Park (ri- (117) Sumas River from Canadian bordcr 

ver mile 9.1) to headwaters. Class AA (river niilc 12) to hcadwatcrs (river inilc 

(104) Soleduck River and tributarics. Class AA 23). Class A 

(105) Spokane River from mouth to t_ong (1 18) Tieton River. Class AA 

Lake Dam (river mile 33.9). Special condi- (1 19) Tolt River, south fork ancl tributartion - temperature shall not exceed 20.0°C ics from mouth to west boundary of Scc. 

duc to human activities. Whcn natural con- :t 1--T26N-R9F, (river milc: 6.9). Class AA 

ditiuns cxcccd 20.0°C, ne temperaturc in- (120) Tolt Rivcr, south fork froni wcst 

crease will be allowed which will raise the boundary of Sec. 31-T26N-R9E (river niilc 

recciving water temperature by greatcr than 6.9) to headwaters. Special condition -- no 

0.3°C; nor shall such temperaturc incrcascs, waste dischargc will bc permittcd. C:latis AA 

at any time, excecd t=34/(T+9). Class A (121) Touchct Rivcr, north furk froni 

Dayton watcr intake structurc (rivcr niilc 

3.0) to hcadwatcrs. Class AA 

(('h. 173-201 WAC-p 1(I) (1 /h/}t}t) 
Water (luality Standards 173-201-085 

(122) Toutic River, north fork, from than 0.3°C; nor shall such temperaturc inGreen River to headwatcrs. Class AA crcascs, at any time, cxcced t=34/(T+9). Class A 

(123) Toutle River, south fork. Class AA (141) Yakima Rivcr from Cle Elum River 

(124) Tucannon River from Umatilla (river milc 185.6) to headwaters. Class AA 

National Forest boundary (river mile 38.1) [Statutory Authority: RCW 90.48.035 and 90.48.260. to hcadwaters. Class AA 88_02-058 (Order 87-6), § 173-201-080, filed 1/6/88. (125) Twisp Rivcr. Class AA Statutory Authority: RCW 90.48.035. 82-12-078 (Or- (126) Union River and tributarics from der DE 82-12), § 173-201-080, filed 6/2/82; 78-02- Bremerton Waterworks Dam (river mile 043 (Order DE 77-32), § 173-201-080, filed 1/17/78; 6.9) to headwatcrs. Special condition - no Ordcr DE 73-22, § l 73-201-080, filed 1 1/ 16/73; Order waste discharge will bc permittcd. Class AA 73-4, § 173-201--080, filcd 7/6/73.] (127) Walla Walla Rivcr from moutli to 

1_owden (Dry Crcek at river mile 27.2). Class B WAC 173-201-085 Specific ciassifications—Ma- 

(128) Walla Walla Rivcr froni Lowden rine water. Specific marine surface waters of the state of 

(Dry Crcck at river mile 27.2) to Oregon Washington arc classified as follows: 

border (rivcr niile 40). Spccial condition - 

tcmperature shzlll not exceed 20.0°C duc to (1) Budd Inlet soutll of latitude 47°04'N 

human activities. When natural conditions (south of Pricst Point Park). Class B 

exceed 20.0°C, no temperature incrcase will (2) Coasta) waters: Pacific Ocean from 

be allowed which will raise the receiving llwaco to Cape Flattery. Class AA 

water tcmperaturc by grc<tter than 0.3°C; (3) Commencement Bay south and east of 

nor shall such tcmperature incrc<<ses, at any a linc bcaring 258 0 truc from "Brown's 

timc, exceed t=34/(T+9). Class A point" and north and west of line bearing 

(129) Wcnatchec River froin Wcnatchec 225° truc through the Hylebos waterway 

Nationa) Forest boundary (rivcr milc 27.)) light• Class A 

to headwaters. Clasti AA (4) C:omnicnccment Bay, inner, south and 

(130) Whitc River (Pierce-King counties) cast of a line bearing 225° true through . 

from Mud Mountain Dam (rivcr milc 29.6) Hylebos .Waterway light exccpt the city wato headwatcrs. Class AA tcrway south and cast of south 11 th Strect. Class B 

(131) White River (Chclan County). Class AA (S) Coitimencement Bay, city waterway 

(132) Wildcat Crcck. Clatis A south and cast of south I 1 th Strect. Clasti C 

(133) Willapii Rivcr upstream of a line (6) Drayton Harbor, south of cnirance. Class A 

bearinb 70°true through Mailbo<<t Slough (7) Dyes and Sinclair Inlets west of lonlight (river inile 1.8). Class A gitude 122°37'W• Class A 

(134) Wishkah Rivcr from mouth to river (8) t:lliott Bay east of a line betwecn Picr 

milc 6(SW 1/4 SW 1/4 N E 1/4 5ec. 21- 91 and Duwamish hcad. Class A 

"I'18N -119W). ('hatiti 13 (9) Everctt Harbor, inner, north and east 

(135) Wishkah River froin rivcr inilc 6 of a linc bcaring 121 ° truc from light "4" 

(SW 1/4 SW 1/4 N E? 1/4 Scc. 21- '1' I KN -- (Snulhoinish River niouth). Class B 

R9W) to wcst fork (rivcr mile 17.7). Class A (10) Grays Harbor wcst of longitude 

(136) Wishkah Rivcr from wcst fork ol' 123 0 59'W• Class A 

Wishkah River (rivcr milc 17.7) to south (1 1) Grays Harbor cast of longitudc 

boundary ol' Scc. 33--T21 N-RSW (rivcr 123 0 59'W to longitudc 123 045'45"W (Cosmile 32.0). Ll,ititi AA inupolis Chchalis Rivc:r, river mile 3.1). 

(137) Wishkah River and tributaries frorn Spccial wndition -- dissolvcd oxygen shall 

south boundary ol' Scc. 33-T21 N-R8W (ri- excecd 5.0 mg/L. Class B 

vcr mile 32.0) to headwaters. Spccia) condi- (12) Gucmcs Channel, Padilla, Samish 

tion - no waste dischargc will bc permitted. Class AA and Bellingham Bays cast of longitude 

(138) Wynoochee River from mouth to 122 0 39'W and north of latitudc 

Olyinpic Ncitional Forest boundary (river 48 0 27'20"N• Class A 

mile 45.9). CIass A (13) Houd Canal. Class AA 

(139) Wynuochec Rivcr l'rom Olynipic (14) Mukiltco and all North Puget Sound 

Nati(inal Forest boundary (river mile 45.9) west of longitude 122 0 39' W(Whidbey, 

tu headwaters. Class AA Fidalgo, Ciucmes and Lumini islands and 

(140) Yakinia Rivcr froin mouth to Clc state highway 20 bridge at Deception Pass), 

Eaum River (river milc 185.6). Spccial con- except as otherwise notcd. Class AA 

dition - tcmperature shall not excced ( 15) Oakland Bay west of longitudc 

21.0°C due tu hunian activitics. Whcn nat- 123 005'W (inncr Shclton harbor). Class B 

ural conditions cxcced 21.0°C. no tenipera- (16) Port Angcles south and wcst of a linc 

turc incrcase will be allowed which will raise bearing 152 0 true from buoy "2" at the tip 

thc rccciving watcr temperaturc by greatcr of Ediz Hook. Class A 

( I /6/xN) 1('h. 173-2111 w'AC-p 11) 
173-201-085 Water Quality Standards 

(17) Port Gamble south of latitude 

47 0 51'20" N. Class A 

(1 K) Port Tuwnscnd wcst of a line betwccn Point Hudson and Kala point. Class A 

(19) Posscssion Sound, south of latitude 

47 057'N, Class AA 

(20) Possession Sound, Port Susan, 

Saratoga Passage, and Skagit Bay c;ast of 

Whidbey Island and state highway 20 

bridge at Deception Pass between latitudc 

470 57'N (Mukilteo) and latitudc 

480 27'20"N (Similk Bay), except as otherwise noted. Class A 

(21) Puget Sound through Admiralty Inlet and South Puget Sound, south and west 

to longitude 122°52'30"W (Brisco Point) 

and longitude 122°51'W (northern tip of 

Hartstene Island). Class AA 

(22) Sequim Bay southward of entrance. Class AA 

(23) South Puget Sound west of longitude 

1220 52'30" W(Brisco Point) and longitude 

122°51'W (northern tip of Hartstene Island, 

except as otherwise noted). Class A 

(24) Strait of Juan de Fuca. Class AA 

(25) Willapa Bay seaward of a line bearing 70° true through Mailboat Siough light 

(Willapa River, river mile 1.8). Class A 

[Statutory Authority: RCW 90.48.035. 82-12--078 (Order DE 82-12), § 173-201-085, filed 6/2/82; 78-02- 

043 (Order DE 77-32), § 173-201-085, filed 1/ 17/78.] 

WAC 173-201-090 Achievement considerations. Tu 

fully achieve and maintain the foregoing water quality in 

the state of Washington, it is the intent of the dcpartmcnt to apply the various implementation and enforccment authoritics at its disposal, including participation 

in the programs of the Federa) Clean Water Act (33 

U.S.C. 1251 ct seq.) as appropriate. lt is also the intent 

that cognizance will be taken of the need for participation in cooperative programs with other state agencies 

and private groups with respect to the management of 

related problems. The department's planned program for 

water pollution control will be defined and revised annually in accordance with section 106 of said federai act. 

Further, it shall be required that all activities which discharge wastes into waters within the state, or otherwisc 

advcrsely affect the quality of said waters, be in compliance with the waste treatment and dischargc provisions 

of statc or federal law. [Statutory Authority: RCW 90- 

.48.035 and 90.48.260. 88-02-058 (Order 87-6), § 173- 

201-090, filed 1/6/88. Statutory Authority: RCW 90- 

.48.035. 82-12-078 (Oraer DE 82-12), § l 73-201-090, 

filcd 6/2/82; 78-02-043 (Order DE 77-32), § 173- 

201-090, filed 1/ 17/78; Order 73-4, § 173-201-090, 

filed 7/6/73.1 

WAC 173-201-100 Implementation. (1) Discharges 

from municipal, commercial, and industrial operations. 

The primary means to be used for controlling niunicipal, 

commercial, and industrial wastc dischargcs shall bc 

through thc issuance of wastc disposal perinits, as provided for in RCW 90.48.160 and following. 

(2) Miscellaneous waste discharge or water quality effect sources. The dircctor shall, through the issuancc uf 

rcgulatory permits, directives, and ordcrs, as arc appropriate, contro) miscellaneuus waste discharges and water 

quality eflcct sourccs not covered by WAC 173--201-- 

100(1) hereof. It is notcd that, frum timc to tinic, ccrtain short--tcrm activities which arc dccmcd nccessary tu 

accommodate etisential activitics or to othcrwisc protect 

the public intcrest may be specially authorized by thc 

director as indicated in WAC 173-201--035 (8)(c), under such conditions as the dircctor may prescribe, evcn 

though such activitics may result in a reduction of w:ttcr 

quality conditions below thosc critcria and classifications 

establishcd by this rcgulation. [Statutury Autliority: 

RCW 90.48.035 and 90.49.260. 88-02-05K (Order 97 

6), § 173 -201-100, filcd 1/6/98. Statutory Authority: 

RCW 90.48.035. 78-02-043 (Ordcr DE 77-32), § 173- 

201--100, filcd 1/ 17/7K; Ordcr 73--4, § 173--201 100, 

filcd 7/6/73.1 ` 

WAC 173-201-110 Surveillance. A cuntinuing surveillancc program, to asccrtain whethcr the regulatiuns, 

waste disposal per,nits, urders, and directives prcmiulgated and/or issued by the dcpartmcnt are bcing complied with, will bc conductcd by the dcpartmcnt staff as 

fullows: 

(1) Inspccting trcatment and control f.icilitics. 

(2) Monitoring and reporting waste dischargc 

characteristics. 

(3) Monitoring recciving water quality. [Statutory 

Authority: RCW 90.48.035. 78-02-043 (Ordcr DE 77 - 

32), § 173 ­201--110, filed 1/ 17/78; Ordcr 73 --4, § 173- 

201 - 1 10, filed 7/6/73.1 

WA(' 173-201-1211 M:nforcement. To insure that the 

provisions of chaptcr 90.48 RCW, thc standards for watcr quality promulgated hcrein, thc tcrms of wastc disposal permits, and athcr urdcrs and directives uf the 

dcpartment are fully complied with, the following enforccmcnt tools will bc rclicd upon by the dcpartment, in 

cooperation with thc attorney gcncral as it dcems 

a ppropria tc: 

(1) Issuancc of noticcs of viol<ition and regulatory ordcrs as providcd for in RC_'W 90.49.120. Undcr this scction, whcncvcr in thc opinion of the dcpartmcnt a person 

is violating or about tu violatc chaptcr 90.48 RCW, thc 

dcpartmcnt shall notify said person of its detcrniination. 

Within thirty days said person shall notify ihe department of thc action takcn or bcing taken in retiponsc tu 

the department's deterniination, wliercupon the departnicnt may issuc a rcgulatory order as it dcenis appropriatc. Whcnever the department deenis itnmediatc: action 

is ncccssary to accomplish thc purposcs of chaptcr 90.48 

RC'W, it may istiuc si regulatory order without first giving notice and thirty days for respunse. 

(2) Initiation of actions requcsting injunctivc or other 

ztppropriatc rclicf in the variou` courts uf thc state, as 

providcd for in RCW 90.48.037. 

(rr,. 173-201 WAC--P 121 
Watrr (luality tilandards 173-201-120 

(3) Levying of civil penaltics as provided for in RC'W 

90.48.144. Undcr this ticction, the director inay Icvy a 

civil pcnalty up to fivc thousand dollars per day against 

a person who violates the terms of a wastr discharge 

permit, or wtw discharges without such a permit when 

the same is rcyuired, or violstcs thc provisions of' RC'W 

90.48.080. 1 f the aniount of the pcnalty, which is subjcct 

to mitigation or rcmission by thc departmcnt, is not p.iid 

within thirty days after receipt of tiaid notice, thc attorncy gcneral, upon requcst of thc dircctor, shall bring an 

action in superior court to recover the samc. 

(4) Initiation of a criminal proceeding by thc apprupriatc countv prosecutor, as provided for in 1tCW 

90.48.140. 

(5) Istivance of regulatory orders or directives ati providcd for in RCW 90.49.240. (Statutory /luthority: 

IZCW 90.48.035. 92-- 12- 078 (Urder 1)E 82 ­ 12), § 17; 

201--120, filcd 6/2/82; 78 02- 043 (Urder 1)1: 77 32). ~ 

173- 2t11--120, filcd 1/ 17/78; C)rdcr 73- 4, § 173- 201 

120, filed 7/6/73.1 

( I /h/sti ) [Ch. 173-201 NVA('—p 131