DWQ-2024-006440

STATE OF UTAHDIVISIONOFWATERQUALITY
DEPARTMENTOFENVIRONMENTALQUALITYSALTLAKECITY, UTAH
UTAHPOLLUTANTDISCHARGEELIMINATIONSYSTEM(UPDES)PERMITS
MinorIndustrialPermitNo. UT0023922
IncompliancewithprovisionsoftheUtah WaterQualityAct,Title19, Chapter5,Utah CodeAnnotated("UCA")1953, as amended(the "Act"),
RIM MINE
isherebyauthorizedtodischargefromitswastewatertreatmentfacilitytoreceivingwatersnamed
UNNAMEDWASHTOEASTCANYONWASH,THENCETO HATCHWASH,
inaccordancewithspecificlimitations,outfalls,andotherconditionssetforthherein.
This permit shall become effective on August 1, 2021Thispermit expires atmidnightonJuly31, 2026.
Signedthis28thday ofJuly, 2021.
Erica Brown Gaddis, PhDDirector
DWQ-2021-013566
MinorIndustrial
TableofContentsOutlinePageNumberDISCHARGELIMITATIONSANDREPORTINGREQUIREMENTS1DescriptionofDischargePoints1NarrativeStandard1SpecificLimitationsandSelf-MonitoringRequirements1ReportingofMonitoringResults3INDUSTRIALPRETREATMENTPROGRAM4BIOSOLIDSREQUIREMENTS7STORMWATERREQUIREMENTS8MONITORING,RECORDING&GENERALREPORTINGREQUIREMENTS9RepresentativeSampling9MonitoringProcedures9PenaltiesforTampering9ComplianceSchedules9AdditionalMonitoringbythe
Permittee9Records Contents9RetentionofRecords9Twenty-fourHourNoticeofNoncomplianceReporting9OtherNoncomplianceReporting10Inspection andEntry10COMPLIANCERESPONSIBILITIES12Dutyto Comply12PenaltiesforViolationsofPermitConditions12NeedtoHaltorReduceActivitynotaDefense12DutytoMitigate12ProperOperationandMaintenance12RemovedSubstances12BypassofTreatmentFacilities12UpsetConditions14GENERALREQUIREMENTS15PlannedChanges15AnticipatedNoncompliance15Permit
Actions15Dutyto Reapply15DutytoProvideInformation15OtherInformation15SignatoryRequirements15PenaltiesforFalsificationofReports16AvailabilityofReports16OilandHazardousSubstanceLiability16PropertyRights16Severability16Transfers16State
orFederalLaws17WaterQuality-ReopenerProvision17BiosolidsReopenerProvision17ToxicityLimitation-ReopenerProvision17DEFINITIONS18A.Wastewater18DISCHARGELIMITATIONSANDREPORTINGREQUIREMENTSDescription
of Discharge Points.The authorization to discharge wastewater provided underthis part is limited to those outfalls specifically designated below as discharge locations.Discharges at
any location not authorized under a UPDES permit are violations of the Act andmay be subject to penalties under the Act.Knowingly discharging from an unauthorizedlocation or failing
to report an unauthorized discharge may be subject to criminal penalties asprovidedundertheAct.
Outfall DescriptionofDischargePoint001Located at latitude 38 03'51" and longitude 109 12'16". The discharge is toanunnameddrywash.Thedischargewouldevaporateorseepintothegroundbefore
flowing 2 miles to East Canyon Wash, 10 miles to Hatch Wash andthentoKaneSprings Creek.Narrative Standard.It shall be unlawful, and a violation of this permit, for the permittee todischarge
or place any waste or other substance in such a way as will be or may becomeoffensivesuchasunnaturaldeposits,floatingdebris,oil,scum,orothernuisancessuchascolor,odor or taste, or cause
conditions which produce undesirable aquatic life or which produceobjectionabletastesinedibleaquaticorganisms;orresultinconcentrationsorcombinationsofsubstances which produce undesirable
physiological responses in desirable resident fish, orother desirable aquatic life, or undesirable human health effects, as determined by a bioassayor othertestsperformedinaccordancewith
standardprocedures.SpecificLimitationsandSelf-MonitoringRequirements.Effectiveimmediately,andlastingthroughthelifeofthispermit,thereshallbenoacuteorchronictoxicityinOutfall 001 asdefinedinPartVIIIofthispermit.
2.Effectiveimmediatelyandlastingthedurationofthispermit,thepermitteeisauthorized to discharge from Outfall001.Such discharges shall be limited andmonitoredbythepermitteeas specifiedTable1and
2.
Table1
Parameter
EffluentLimitationsd,e
Maximum
MonthlyAvg
Daily
Minimum
Daily
Maximum
TotalFlow,MGDb
0.03
--
--
TSS,mg/L
20
--
30
TotalUranium,mg/L
2.0
--
4.0
Total Radium226, pCi/L
10
--
30
Dissolved Radium226, pCi/L
3
--
10
Gross Alpha,pCi/L
--

--
15
COD,mg/L
100
--
200
TotalZinc
0.5
--
1.0
TotalDissolvedSolids,mg/L
--
--
1000
TotalDissolved Solids, tons/dayc
--
--
1.0
Oil&Grease,mg/Lf
--
--
10.0
pH,StandardUnits
--
6.5
9.0
Table2
Self-MonitoringandReportingRequirementsa
Parameter
Frequency
Sample
Type
Units
Reporting
Frequency
Total Flowb
Continuous
Recorder
MGD
Monthly
TSS
Monthly
Grab
mg/L
Monthly
TotalUranium
Monthly
Grab
mg/L
Monthly
Total Radium226
Monthly
Grab
pCi/L
Monthly
DissolvedRadium226
Monthly
Grab
pCi/L
Monthly

Gross Alpha
Monthly
Grab
pCi/L
Monthly
COD
Quarterly
Grab
mg/L
Quarterly
TotalZinc
Quarterly
Grab
mg/L
Quarterly
TotalDissolvedSolids
Quarterly
Grab
mg/L
Quarterly
TotalDissolvedSolids
Quarterly
Grab
tons/day
Quarterly
Oil&Grease
Quarterly
Grab
mg/L
Quarterly
pH
Monthly
Grab
StandardUnits
Monthly
Temperature
Monthly
Grab
°F
Monthly
Table References
a.See Definitions,PartVIII,fordefinitionofterms.
b.Flowmeasurementsofinfluent/effluentvolumeshallbemadeinsuchamannerthatthepermitteecanaffirmativelydemonstratethatrepresentativevaluesarebeingobtained.
c.TDSwillbelimitedtoamaximumdischargeof1.0tonperdayor366tonsperyear,withdaily
theactualdischargeofTDSforeachmonitoringperiod.
d.Thereshallbenodischarge offloatingsolids orvisiblefoaminotherthantraceamounts.
e.Thereshallbenodischargeofsanitarywastes.
f.An Oil &Greasesampleshallbetaken whenasheen isvisible.
EndTable References
The permittee is required to sample and submit the analysis of the pollutants listed in 40 CFR Part 122AppendixDTableIII(OtherToxicPollutants(MetalsandCyanide)andTotalPhenols)occurringfromthefirst
discharge of the facility. This UPDES permit may be reopened and the permit limits modified basedontheanalysis ofthesepollutants.ReportingofMonitoringResults.ReportingofWastewaterMonitoringResultsMonitoringresults
obtainedduringthepreviousmonthshallbesummarizedforeachmonthandreportedonaDischargeMonitoringReportForm throughNetDMRno later thanthe28thday ofthemonthfollowingthecompletedreportingperiod.Ifnodischargeoccursduringthereporting
required herein, shall be signed and certified in accordance with the requirements ofSignatoryRequirements(seePartVII.G),andsubmittedbyNetDMR,ortotheDivisionofWater Qualityatthefollowingaddress:
Department of Environmental QualityDivisionof WaterQuality
POBox 144870
SaltLakeCity,Utah84114-4870INDUSTRIALPRETREATMENTPROGRAMDischarge to POTW. Any wastewaters discharged to the sanitary sewer, either as a directdischargeorasahauledwaste,aresubjecttoFederal,Stateandlocalpretreatmentregulations.PursuanttoSection307ofTheWaterQualityActof1987,thepermitteeshallcomplywithallapplicable
federal General Pretreatment Regulations promulgated at 40 CFR 403, the StatePretreatment Requirements at UAC R317-8-8, and any specific local discharge limitationsdeveloped by the Publicly
Owned Treatment Works (POTW) accepting the wastewaters. At aminimumthe discharge,intoaPOTW,must mettherequirementsof PartVIofthe permit.HazardousWasteNotification.ThepermitteemustnotifythePOTW,theEPARegionalWasteManagementDirector,theDirectorandtheStatehazardouswasteauthorities,inwriting,iftheydischarge
any substance into a POTW which if otherwise disposed of would be considered ahazardous waste under 40 CFR 261. This notification must include the name of the hazardouswaste,theEPAhazardouswastenumber,
andthetype ofdischarge(continuousor batch).GeneralandSpecificProhibitions.GeneralProhibitions.ThepermitteemaynotintroduceintoaPOTWanypollutant(s)whichcausePassThroughorInterference.Thesegeneralprohibitionsandthespecificprohibitionsinparagraph2.ofthissectionapplytotheintroducingpollutantsintoaPOTWwhether

or not the permittee is subject to other National Pretreatment Standards or anynational,State, orlocal Pretreatment Requirements.SpecificProhibitions.Thefollowingpollutantsshallnotbeintroducedintoa
POTW:Pollutants which create a fire or explosion hazard in the publicly owned treatmentworks(POTW),including,butnotlimitedto,wastestreamswithaclosedcupflashpointoflessthan;Pollutants,whichwillcausecorrosivestructuraldamagetothePOTW,butinnocase,discharges
withapHlowerthan 5.0;Solid or viscous pollutants in amounts which will cause obstruction to the flow in thePOTWresultingininterference;Any pollutant, including oxygen demanding pollutants
(BOD, etc.), released in adischarge atsuch volumeorstrengthastocauseinterference inthePOTW;Heat in amounts, which will inhibit biological activity in the POTW, resulting ininterference,
but in no case, heat in such quantities that the influent to the sewagetreatment worksexceeds104 4);Petroleum oil, nonbiodegradable cutting oil, or products of mineral oil origin
inamountsthat willcauseinterferenceorpass through;Pollutants, which result in the presence of toxic gases, vapor, or fumes within thePOTWin aquantitythat maycauseworkerhealth orsafetyproblems;Anytruckedorhauledpollutants,exceptatdischargepointsdesignatedbythePOTW;orAnypollutantthatcausespassthroughorinterferenceatthePOTW.AnyspecificpollutantwhichexceedsanylocallimitationestablishedbythePOTW.CategoricalStandards.InadditiontothegeneralandspecificlimitationsexpressedinPartVI.
C. of this section, applicable National Categorical Pretreatment Standards must be met by allindustrial users discharging into a POTW.These standards are published in the federalregulationsat40
CFR 405 through 471.Definitions.Forthissectionthefollowingdefinitionsshallapply:Indirect Discharge means the introduction of pollutants into a publicly-owned treatmentworks (POTW) from
any non-domestic source regulated under section 307 (b), (c) or (d)of theCWA.Interferencemeansadischargewhich,aloneorinconjunctionwithadischargeordischargesfromothersources, both:Inhibits
or disrupts the POTW, its treatment processes or operations, or its sludgeprocesses,useordisposal;andTherefore is a cause of a violation of any requirement of the POTW's NPDES permit(includinganincreaseinthemagnitudeordurationofaviolation)orofthepreventionofsewagesludgeuseordisposalincompliancewiththefollowingstatutoryprovisionsandregulationsorpermitsissuedthereunder(ormorestringentStateorlocalregulations):
Section 405 of the Clean Water Act, the Solid Waste Disposal Act(SWDA) (including title II, more commonly referred to as the Resource Conservationand Recovery Act (RCRA), and including
State regulations contained in any StatesludgemanagementplanpreparedpursuanttosubtitleDoftheSWDA),theCleanAirAct, the Toxic Substances Control Act, and the Marine Protection, Research
andSanctuariesAct.Pass Through means a Discharge which exits the POTW into waters of the United Statesinquantitiesorconcentrationswhich,aloneorinconjunctionwithadischargeordischarges
from other sources, is a cause of a violation of any requirement of the POTW'sNPDESpermit(includinganincreasein themagnitudeordurationof aviolation).PubliclyOwnedTreatmentWorksorPOTWmeansatreatmentworksasdefinedbysection212
of the CWA, which is owned by a State or municipality (as defined by section 502(4)of the CWA). This definition includes any devices and systems used in the storage,treatment, recycling
and reclamation of municipal sewage or industrial wastes of a liquidnature.Italsoincludessewers,pipesandotherconveyancesonlyiftheyconveywastewaterto a POTW Treatment Plant. The term
also means the municipality as defined in section502(4) of theCWA,whichhas jurisdictionover theIndirectDischarges to andthedischargesfromsuch atreatment works.Significant industrial
user (SIU) is defined as an industrial user discharging to a POTWthatsatisfiesanyofthefollowing:Hasaprocesswastewaterflowof25,000gallonsormore peraverageworkday;Has a flow greater than
five percent of the flow carried by the municipal systemreceivingthewaste;IssubjecttoCategoricalPretreatmentStandards,orHasareasonablepotentialforadverselyaffectingthePOTW'soperationor
forviolatinganypretreatmentstandardorrequirement.User orIndustrialUser(IU)meansa sourceofIndirectDischarge.BIOSOLIDSREQUIREMENTS
The State of Utah has adopted the 40 CFR 503 federal regulations for the disposal of sewage sludge(biosolids) by reference.However, this facility is an industrial facility where all
sanitary waste is hauledoffsite,andthusdoesnotgenerateanybiosolidsonsite.Asaresult,nobiosolidsrequirementsareincluded.STORMWATERREQUIREMENTS.Industrial Storm Water Permit. Based on the
type of industrial activities occurring at thefacility, the permittee is required to maintain separate coverage or an appropriate exclusionunder the Multi-Sector General Permit (MSGP)
for Storm Water Discharges Associated withIndustrial Activities (UTR000000). If the facility is not already covered, the permittee has 30days from when this permit is issued to submit
the appropriate Notice of Intent (NOI) for theMSGP orexclusion documentation.ConstructionStormWaterPermit.Anyconstructionatthefacilitythatdisturbsanacreormoreof land, including less
than an acre if it is part of a common plan of development or sale, isrequired to obtain coverage under the UPDES Construction General Storm Water Permit(UTRC00000).Permitcoveragemustbeobtainedpriortolanddisturbance.Ifthesitequalifies,aLowErosivityWaiver
(LEW)Certificationmaybe submittedinsteadof permitcoverage.MONITORING,RECORDING&GENERALREPORTINGREQUIREMENTSRepresentative Sampling.Samples taken in compliance with the monitoring requirementsestablished
under Part I shall be collected from the effluent stream prior to discharge into thereceiving waters. Samples and measurements shall be representative of the volume and natureofthemonitoreddischarge.Samplesofbiosolidsshallbecollectedatalocationrepresentativeof
thequalityofbiosolidsimmediatelypriortotheuse-disposalpractice.Monitoring Procedures. Monitoring must be conducted according to test procedures approvedunderUtahAdministrativeCode("UAC")R317-2-10and40CFRPart503,utilizingsufficiently
sensitive test methods unless other test procedures have been specified in thispermit.Penalties for Tampering.The Act provides that any person who falsifies, tampers with, orknowingly
renders inaccurate, any monitoring device or method required to be maintainedunder this permit shall, upon conviction, be punished by a fine of not more than $10,000 perviolation,orbyimprisonmentfornotmorethansix
monthsperviolation,orbyboth.ComplianceSchedules.Reportsofcomplianceornoncompliancewith,oranyprogressreportson, interim and final requirements contained in any Compliance Schedule of
this permit shallbe submitted nolaterthan 14daysfollowingeach scheduledate.Additional Monitoring by the Permittee.If the permittee monitors any parameter morefrequentlythanrequiredbythispermit,usingtestproceduresapprovedunderUACR317-2-10and
40 CFR 503 or as specified in this permit, the results of this monitoring shall be includedinthecalculationandreportingofthedatasubmittedintheDMRortheBiosolidsReportForm.Suchincreasedfrequencyshallalsobeindicated.Onlythoseparametersrequiredbythepermitneedto
bereported.RecordsContents.Recordsof monitoringinformationshallinclude:Thedate,exactplace,andtime of samplingormeasurements:Theindividual(s)whoperformedthe samplingor measurements;Thedate(s)andtime(s)analyseswere
performed;Theindividual(s)whoperformedtheanalyses;Theanalyticaltechniquesor methods used;and,Theresultsofsuchanalyses.Retention of Records.The permittee shall retain records of all monitoring
information,including all calibration and maintenance records and all original strip chart recordings forcontinuous monitoring instrumentation, copies of all reports required by this
permit, andrecords of all data used to complete the application for this permit, for a period of at least fiveyears from the date of the sample, measurement, report or application.This
period may beextended by request of the Director at any time. A copy of this UPDES permit must bemaintainedonsiteduringthe duration ofactivityatthepermittedlocationTwenty-fourHourNoticeofNoncomplianceReporting.The
permittee shall (orally) report any noncompliance including transportation accidents,spills, and uncontrolled runoff from biosolids transfer or land application sites which mayseriously
endanger health or environment, as soon as possible, but no later than twenty-four (24) hours from the time the permittee first became aware of circumstances.Thereportshall be madeto
the Divisionof WaterQuality,[phone],or24-houransweringservice(801)536-4123.The following occurrences of noncompliance shall be reported by telephone [phone] as soon as possible
but no later than 24 hours from the time the permittee becomesawareofthecircumstances:Anynoncompliancewhichmayendanger healthortheenvironment;Anyunanticipatedbypass,whichexceedsanyeffluentlimitationinthepermit(See
PartVI.G,BypassofTreatmentFacilities.);Any upset which exceeds any effluent limitation in the permit (See Part VI.H, UpsetConditions.);Violation of a daily discharge limitation for any
of the pollutants listed in the permit;or,ViolationofanyoftheTable3metalslimits,thepathogenlimits,thevectorattractionreductionlimitsorthemanagementpracticesforbiosolidsthathavebeensoldorgivenaway.Awrittensubmissionshallalsobeprovidedwithinfivedaysofthetimethatthepermitteebecomesawareofthecircumstances.The
writtensubmissionshall contain:Adescriptionofthenoncomplianceand itscause;Theperiodof noncompliance,includingexactdatesandtimes;Theestimatedtimenoncomplianceisexpectedtocontinueifithasnotbeencorrected;Stepstakenorplannedtoreduce,eliminate,andpreventreoccurrenceofthenoncompliance;
and,Steps taken, if any, to mitigate the adverse impacts on the environment and humanhealthduringthenoncomplianceperiod.The Director may waive the written report on a case-by-case basis
if the oral report hasbeenreceived within24hours bytheDivision ofWaterQuality, [phone].ReportsshallbesubmittedtotheaddressesinPartI.D,ReportingofMonitoringResults.Other Noncompliance
Reporting.Instances of noncompliance not required to be reportedwithin24hoursshallbereportedatthetimethatmonitoringreportsforPartI.Daresubmitted.Thereportsshallcontaintheinformation
listedinPartV.H.3Inspection and EntryThe permittee shall allow the Director, or an authorized representative,uponthepresentationofcredentialsand otherdocuments as mayberequiredbylaw,to:Enter
upon the permittee's premises where a regulated facility or activity is located orconducted,orwhererecordsmustbekept undertheconditions ofthepermit;Have access to and copy, at reasonable
times, any records that must be kept under theconditionsofthispermit;Inspectatreasonabletimesany facilities, equipment(including monitoring and controlequipment),practices,oroperationsregulatedorrequiredunderthispermit,includingbut
notlimitedto,biosolidstreatment,collection,storagefacilitiesorarea,transportvehiclesandcontainers, and land applicationsites;Sample or monitor at reasonable times, for the purpose of
assuring permit compliance orasotherwiseauthorizedbytheAct,anysubstancesorparametersatanylocation,including,but not limited to, digested biosolids before dewatering, dewatered biosolids,
biosolidstransfer or staging areas, any ground or surface waters at the land application sites orbiosolids,soils, orvegetationon theland applicationsites; and,Thepermitteeshallmakethenecessaryarrangementswiththelandownerorleaseholdertoobtainpermissionorclearance,theDirector,orauthorizedrepresentative,uponthepresentation
of credentials and other documents as may be required by law, will bepermittedtoenter withoutdelayforthepurposesofperformingtheir responsibilities.COMPLIANCERESPONSIBILITIESDuty to Comply.The
permittee must comply with all conditions of this permit.Any permitnoncompliance constitutes a violation of the Act and is grounds for enforcement action; forpermit termination, revocation
and reissuance, or modification; or for denial of a permitrenewal application.The permittee shall give advance notice to the Director of any plannedchanges in the permitted facility
or activity, which may result in noncompliance with permitrequirements.Penalties for Violations of Permit Conditions.The Act provides that any person who violatesapermitconditionimplementingprovisionsoftheActissubjecttoacivilpenaltynottoexceed
$10,000 per day of such violation.Any person who willfully or negligently violates permitconditionsortheActissubjecttoafinenotexceeding$25,000perdayofviolation.AnypersonconvictedunderUCA19-5-115(2)asecondtimeshallbepunishedbyafinenotexceeding

$50,000 per day.Except as provided at Part VI.G, Bypass of Treatment Facilities and PartVI.H,UpsetConditions,nothinginthispermitshallbeconstruedtorelievethepermitteeofthecivilorcriminalpenaltiesfornoncompliance.Need
to Halt or Reduce Activity not a Defense.It shall not be a defense for a permittee in anenforcement action that it would have been necessary to halt or reduce the permitted activityinorderto
maintaincompliancewiththeconditionsofthispermit.Duty to Mitigate.The permittee shall take all reasonable steps to minimize or prevent anydischarge in violation of this permit, which
has a reasonable likelihood of adversely affectinghuman health or the environment.The permittee shall also take all reasonable steps tominimize orpreventanyland applicationinviolationofthispermit.Proper
Operation and Maintenance.The permittee shall at all times properly operate andmaintain all facilities and systems of treatment and control (and related appurtenances) whichareinstalledorusedbythepermitteetoachievecompliance
withtheconditionsofthispermit.Proper operation and maintenance also includes adequate laboratory controls and qualityassurance procedures.This provision requires the operation of back-up
or auxiliary facilitiesor similar systems, which are installed by a permittee only when the operation is necessary toachievecompliancewith theconditionsofthepermit.Removed Substances.
Collected screening, grit, solids, sludge, or other pollutants removed inthe course of treatment shall be disposed of in such a manner so as to prevent any pollutantfrom entering any
waters of the state or creating a health hazard.Sludge/digester supernatantandfilterbackwashshallnotdirectlyentereitherthefinaleffluentorwatersofthestatebyanyotherdirectroute.BypassofTreatmentFacilities.Bypass
Not Exceeding Limitations.The permittee may allow any bypass to occur whichdoes not cause effluent limitations to be exceeded, but only if it also is for essentialmaintenance to assure
efficient operation. These bypasses are not subject to paragraph 2and3 ofthissection.ProhibitionofBypass.Bypassisprohibited,andtheDirectormaytakeenforcementactionagainstapermitteeforbypass,
unless:Bypasswasunavoidabletopreventlossofhumanlife,personalinjury,orseverepropertydamage;There were no feasible alternatives to bypass, such as the use of auxiliarytreatment facilities,
retention of untreated wastes, or maintenance during normalperiods of equipment downtime.This condition is not satisfied if adequatebackup equipment should have been installed in the
exercise of reasonableengineeringjudgementtopreventabypasswhichoccurredduringnormalperiodsofequipmentdowntimeorpreventivemaintenance,andThepermitteesubmittednoticesasrequiredunderPartVI.G.3.The
Director may approve an anticipated bypass, after considering its adverse effects,iftheDirectordeterminesthatitwillmeetthethreeconditionslistedinPartsVI.G.2.a(1),(2)and (3).Notice.Anticipated
bypass.Except as provided above in Part VI.G.2 and below in PartVI.G.3.b, if the permittee knows in advance of the need for a bypass, it shall submitprior notice, at least ninety days
before the date of bypass.The prior notice shallincludethefollowingunlessotherwisewaived bytheDirector:Evaluationofalternativetobypass,includingcost-benefitanalysiscontaininganassessmentofanticipatedresourcedamages:Aspecificbypassplandescribingtheworktobeperformedincludingscheduleddates
and times.The permittee must notify the Director in advance of anychangesto thebypassschedule;Description of specific measures to be taken to minimize environmental andpublic healthimpacts;Anotificationplansufficienttoalertalldownstreamusers,thepublicandothersreasonablyexpected
to beimpacted bythebypass;Awaterqualityassessmentplantoincludesufficientmonitoringofthereceivingwater before, during and following the bypass to enable evaluation of publichealthrisks
and environmental impacts; and,AnyadditionalinformationrequestedbytheDirector.Emergency Bypass.Where ninety days advance notice is not possible, the permitteemust notify the Director,
and the Director of the Department of Natural Resources, assoon as it becomes aware of the need to bypass and provide to the Director theinformationin PartVI.G.3.a.(1)through (6)totheextentpracticable.Unanticipated
bypass.The permittee shall submit notice of an unanticipated bypassto the Director as required under Part IV.H, Twenty-Four Hour Reporting.Thepermittee shall also immediately notify
the Director of the Department of NaturalResources,thepublicanddownstreamusersandshallimplementmeasurestominimizeimpactstopublichealth andenvironment totheextentpracticable.Upset Conditions.Effect
of an upset.An upset constitutes an affirmative defense to an action brought fornoncompliance with technology-based permit effluent limitations if the requirements ofparagraph 2 of this
section are met.Director's administrative determination regarding aclaim of upset cannot be judiciously challenged by the permittee until such time as anactionisinitiated fornoncompliance.Conditions
necessary for a demonstration of upset.A permittee who wishes to establishtheaffirmativedefenseofupsetshalldemonstrate,throughproperlysigned,contemporaneousoperatinglogs, orotherrelevant
evidencethat:Anupsetoccurredandthatthepermittee canidentifythecause(s) oftheupset;Thepermittedfacilitywas atthetimebeingproperlyoperated;ThepermitteesubmittednoticeoftheupsetasrequiredunderPartV.H,Twenty-fourHourNoticeof
NoncomplianceReporting;and,ThepermitteecompliedwithanyremedialmeasuresrequiredunderPartVI.D,DutytoMitigate.Burden of proof.In any enforcement proceeding, the permittee seeking to establish
theoccurrence ofan upset has theburdenofproof.GENERALREQUIREMENTSPlanned Changes.The permittee shall give notice to the Director as soon as possible of anyplannedphysicalalterationsoradditionstothepermittedfacility.Noticeisrequiredonlywhenthe
alteration or addition could significantly change the nature or increase the quantity ofparameters discharged or pollutant sold or given away. This notification applies to pollutants,which
are not subject to effluent limitations in the permit. In addition, if there are any plannedsubstantial changes to the permittee's existing sludge facilities or their manner of operation
ortocurrentsludgemanagementpracticesofstorageanddisposal,thepermitteeshallgivenoticetotheDirectorofanyplanned changesatleast30 dayspriortotheirimplementation.Anticipated Noncompliance.The
permittee shall give advance notice to the Director of anyplanned changes in the permitted facility or activity, which may result in noncompliance withpermitrequirements.Permit Actions.This
permit may be modified, revoked and reissued, or terminated for cause.The filing of a request by the permittee for a permit modification, revocation and reissuance,or termination, or
a notification of planned changes or anticipated noncompliance, does notstayanypermit condition.Duty to Reapply.If the permittee wishes to continue an activity regulated by this permit
afterthe expiration date of this permit, the permittee shall apply for and obtain a new permit.Theapplicationshallbesubmittedatleast180 daysbeforetheexpiration dateofthispermit.Duty
to Provide Information.The permittee shall furnish to the Director, within a reasonabletime, any information which the Director may request to determine whether cause exists formodifying,revokingandreissuing,orterminatingthispermit,ortodeterminecompliancewiththis
permit.The permittee shall also furnish to the Director, upon request, copies of recordsrequired tobekeptbythispermit.Other Information.When the permittee becomes aware that it failed
to submit any relevantfacts in a permit application, or submitted incorrect information in a permit application or anyreporttotheDirector,itshallpromptlysubmitsuch factsorinformation.Signatory
Requirements.All applications, reports or information submitted to the Directorshallbesignedand certified.All permit applications shall be signed by either a principal executive officer
or rankingelectedofficial.Allreportsrequiredbythepermitandother informationrequestedbytheDirectorshallbesigned by a person described above or by a duly authorized representative of that
person.Apersonisadulyauthorized representativeonlyif:TheauthorizationismadeinwritingbyapersondescribedaboveandsubmittedtotheDirector,and,The authorization specifies either an individual
or a position having responsibility forthe overall operation of the regulated facility, such as the position of plant manager,superintendent, position ofequivalent responsibility, or
an individual or positionhavingoverallresponsibilityforenvironmentalmatters.Adulyauthorized
representativemaythusbeeitheranamedindividualoranyindividualoccupyinganamed position.Changes to authorization.If an authorization under paragraph VII.G.2 is no longeraccuratebecauseadifferentindividualorposition
hasresponsibilityforthe overalloperationofthefacility,anewauthorizationsatisfyingtherequirementsofparagraph
VII.G.2.mustbesubmittedtotheDirectorpriortoortogetherwithanyreports,information,orapplicationstobesignedbyan authorizedrepresentative.Certification.Any person signing a document under
this section shall make the followingcertification:
"Icertifyunderpenaltyoflawthatthisdocumentandallattachmentswerepreparedundermy direction or supervision in accordance with a system designed to assure that qualifiedpersonnelproperlygatherandevaluatetheinformationsubmitted.Basedonmyinquiryofthe
person or persons who manage the system, or those persons directly responsible forgathering the information, the information submitted is, to the best of my knowledge andbelief, true,
accurate, and complete.I am aware that there are significant penalties forsubmittingfalseinformation,includingthepossibilityoffineandimprisonmentforknowingviolations."PenaltiesforFalsificationofReports.TheActprovidesthatanypersonwhoknowinglymakesany
false statement, representation, or certification in any record or other document submittedor required to be maintained under this permit, including monitoring reports or reports ofcomplianceornoncomplianceshall,uponconvictionbepunishedbyafineofnotmorethan
$10,000.00perviolation,orbyimprisonmentfornotmorethansixmonthsperviolation,orbyboth.Availability of Reports. Except for data determined to be confidential under UAC R317-8-3.2,all reports
prepared in accordance with the terms of this permit shall be available for publicinspection at the office of Director.As required by the Act, permit applications, permits andeffluentdatashallnot
beconsideredconfidential.Oil and Hazardous Substance Liability.Nothing in this permit shall be construed to precludethe permittee of any legal action or relieve the permittee from any
responsibilities, liabilities,orpenaltiesto which thepermitteeisormaybesubjectundertheAct.Property Rights.The issuance of this permit does not convey any property rights of any sort,oranyexclusiveprivileges,nordoesitauthorizeanyinjurytoprivatepropertyoranyinvasionof
personalrights,noranyinfringementoffederal,stateorlocallaws or regulations.Severability.The provisions of this permit are severable, and if any provisions of this permit,or the application
of any provision of this permit to any circumstance, is held invalid, theapplicationofsuchprovisiontoothercircumstances,andtheremainderofthispermit,shallnotbe affectedthereby.Transfers.Thispermitmaybeautomaticallytransferredtoanewpermitteeif:ThecurrentpermitteenotifiestheDirectoratleast20daysinadvanceoftheproposedtransferdate;Thenoticeincludesawrittenagreementbetweentheexcontaining
a specific date for transfer of permit responsibility, coverage, and liabilitybetweenthem;and,The Director does not notify the existing permittee and the proposed new permittee of hisor
her intent to modify, or revoke and reissue the permit.If this notice is not received, thetransferiseffectiveonthedatespecifiedintheagreementmentionedinparagraph2above.State or Federal

Laws.Nothing in this permit shall be construed to preclude the institution ofany legal action or relieve the permittee from any responsibilities, liabilities, or penaltiesestablishedpursuanttoanyapplicablestatelaworregulationunderauthoritypreservedbyUCA19-5-117andSection510oftheActoranyapplicableFederalorStatetransportationregulations,suchasbutnotlimitedtothe
DepartmentofTransportationregulations.Water Quality - Reopener Provision.This permit may be reopened and modified (followingproperadministrativeprocedures)toincludetheappropriateeffluentlimitationsandcomplianceschedule,ifnecessary,ifoneormoreofthe
followingeventsoccurs:Water Quality Standards for the receiving water(s) to which the permittee discharges aremodified in such a manner as to require different effluent limits than contained
in thispermit.A final wasteload allocation is developed and approved by the State and/or EPA forincorporationinthis permit.RevisionstothecurrentCWA§208areawidetreatmentmanagementplansorpromulgations/revisions
to TMDLs (40 CFR 130.7) approved by the EPA and adopted byDWQwhichcallsfordifferent effluentlimitationsthancontainedin thispermit.BiosolidsReopener Provision. This permit may be reopened
and modified (following properadministrative procedures) to include the appropriate biosolids limitations (and complianceschedule,ifnecessary),managementpractices,otherappropriaterequirementstoprotectpublichealth
and the environment, or if there have been substantial changes (or such changes areplanned) in biosolids use or disposal practices; applicable management practices or numericallimitationsforpollutantsinbiosolidshavebeenpromulgatedwhicharemorestringentthantherequirements
in this permit; and/or it has been determined that the permittees biosolids use orlandapplicationpracticesdonotcomplywithexistingapplicablestateoffederalregulations.ToxicityLimitation-Reopener
Provision.
This permit may be reopened and modified (following proper administrative procedures)to include WET testing, a WET limitation, a compliance schedule, a compliance date,additionalor modifiednumericallimitations,oranyother
conditionsrelatedtothecontrolof toxicants iftoxicityisdetected duringthelifeofthispermit.DEFINITIONSWastewater.-E. coli bacteria, fecal coliform bacteria,and total coliform bacteria,
is the arithmetic average of all samples collected during aconsecutive 7-day period or calendar week, whichever is applicable.Geometric meansshall be calculated for E. coli bacteria,
fecal coliform bacteria, and total coliform bacteria.The 7-day and weekly averages are applicable only to those effluent characteristics forwhich there are 7-day average effluent limitations.The
calendar week, which begins onSundayandendsonSaturday,shallbeusedforpurposesofreportingself-monitoringdataondischargemonitoringreportforms.Weeklyaveragesshallbecalculatedforallcalendarweeks
with Saturdays in the month.If a calendar week overlaps two months (i.e., theSunday is in one month and the Saturday in the following month), the weekly averagecalculated for that calendar
week shall be included in the data for the month that containsSaturday.The"30-day(andmonthly)average,"otherthanforE.colibacteria,fecalcoliformbacteriaand total coliform bacteria, is
the arithmetic average of all samples collected during aconsecutive 30-day period or calendar month, whichever is applicable.Geometric meansshall be calculated for E. coli bacteria,
fecal coliform bacteria and total coliform bacteria.The calendar month shall be used for purposes of reporting self-monitoring data ondischarge monitoringreportforms.3.UtahWaterQualityAct.4.eithertest
5.6.IC25< XX% effluent.The XX% effluent is theconcentrationoftheeffluentinthereceivingwater,attheendofthemixingzoneexpressedaspercent effluent."IC25" is the concentration of toxicant
(given in % effluent) that would cause a 25%reduction in mean young per female, or a 25% reduction in overall growth for the testpopulation.8.
minimum, contain at least four (4) samples collected over the compositing period.Unlessotherwisespecified,thetimebetweenthecollectionofthefirstsampleandthelastsampleshall not be less
than six (6) hours nor more than 24 hours.Acceptable methods forpreparationofcompositesamples areas follows:Constanttimeintervalbetweensamples,samplevolumeproportionaltoflowrateattimeofsampling;Constant
time interval between samples, sample volume proportional to total flow(volume) since last sample.For the first sample, the flow rate at the time the samplewascollected maybeused;Constantsamplevolume,timeintervalbetweensamplesproportionaltoflow(i.e.,Continuoussamplevolume,withsample
collectionrateproportionaltoflowrate.9.meansTheFederalWaterPollutionControlAct,asamended,byTheCleanWaterActof 1987.
10.
instantaneousmeasurement.
11.
12.DivisionofWaterQuality.
13.
collectedat arepresentativepointinthedischargestream.14.requirements,isdefinedasasingle
reading,observation,ormeasurement.
15.
treatmentfacilitieswhichcausesthemtobecomeinoperable,orsubstantialandpermanentloss of natural resources which can reasonably be expected to occur in the absence of abypass.Severe property
damage does not mean economic loss caused by delays inproduction.16.mporary
noncompliancewithtechnology-basedpermiteffluentlimitationsbecauseoffactorsbeyond the reasonable control of the permittee. An upset does not include noncompliancetotheextentcausedbyoperationalerror,improperlydesignedtreatmentfacilities,inadequate
treatment facilities, lack of preventative maintenance, or careless or improperoperation.
FACT SHEET AND STATEMENT OF BASISRIM MINE
RENEWAL PERMIT: DISCHARGEUPDES PERMIT NUMBER: UT0023922MINORINDUSTRIAL
FACILITYCONTACTS
PersonName:
Marty Tunney
Position:
Chief Operating Officer
PhoneNumber:
[phone]
Email:
[e-mail]
PersonName:
Joshua Holland
Position:
Director of Regulatory Affairs
PhoneNumber:
[phone]
Email:
[e-mail]
Permittee Name:
FacilityName:
CUR Sage Plain Uranium, LLC
RimMine
MailingAddress:

217 Queen Street West, Suite 303
Toronto, ON Canada M6V 0P5
ActualAddress:
SW¼ NW¼Section29,T31S,R25E, SanJuan County, UT
Northof Monticello
DESCRIPTIONOFFACILITY
CUR Sage Plain Uranium, LLC owns and operates the Rim Mine, which is an underground uraniumandvanadiumoremine.Themonthlydesigndischargeforthefacilityis0.03MGD.Thedischargetreatment system
for this facility consists of a chemical precipitation with barium chloride. Theintercepted mine water is pumped and mixed with barium chloride and then to an initial settlingpond where
barium chloride assists in radium reduction. Additional water treatment is providedby a second clay-lined settling pond where solids settling occur. When the second pond is filled,waterflowsthroughadischargepipeandisreleasedatthepermitteddischargelocationofOutfall001.
As noted in the permit renewal application, the Rim Mine continues to be in a non-operationalstatusandnochangeshaveoccurredtothefacility.ThemineislocatednorthofMonticelloatSW
¼ NW ¼ Section 29 T31S R25E in San Juan County, Utah at latitude 38o03’51” and longitude109o12’16”.ThefacilityStandardIndustrialClassification(SIC)code1094,forUraniummining.TheSTORETnumberis
495906.
SUMMARYOF CHANGESFROMPREVIOUSPERMIT
The Rim Mine has not had a discharge since the issuance of the UPDES Permit Number UT0023922.DWQ’s2016IntegratedReportlistsKaneSpringWashfromconfluencewithColoradoRivertoheadwaters(assessmentUnitUT4030005-001_00)asimpaired(TMDLrequired)fortotaldissolvedsolids(Class4)andtemperature(Class
3C).
EffluentlimitsforTDSandtemperatureequaltothewaterqualitycriteriawillensurethatinstreamcriteriawill not be exceeded at the point of discharge as well as not causing or contributing to
the existingimpairment ofdownstreaminKane Springs Wash.
Thepotentialparametersofconcernidentifiedforthedischarge/receivingwaterwereTDSandtemperatureas a result of the downstream receiving water having been impaired for these pollutants. TDS
permit limitwill remain the same as to be in line with other uranium mines. Temperature will have monitoring onlyrequirements.
Allotherparameterspermitlimitationswillremainthesamesincethereisnodatatoverifythecomplianceof the UPDES permit. The Rim Mine is required to sample and submit the analysis of the pollutants
listedin40CFRPart122AppendixDTableIII(OtherToxicPollutants(MetalsandCyanide)andTotalPhenols)occurringfromthefirstdischargeofthefacility.ThisUPDESpermitmaybereopenedandthepermitlimitsmodified
based on the analysis of these pollutants. Based on existing facilities with similar productionprocesses andwastewatertreatments,the RimMineisexpectedto be ableto complywiththelimitations.
DISCHARGE
DESCRIPTIONOFDISCHARGE
RimMine has nothada dischargesinceNovember2012.
Outfall
DescriptionofDischargePoint
001
Locatedatlatitude3803'51"andlongitude10912'16".Thedischargeistoanunnamed
dry wash. The discharge wouldevaporateorseep into thegroundbeforeflowing 2milestoEast CanyonWash,10milestoHatchWashandthentoKaneSpringsCreek.
RECEIVINGWATERSANDSTREAMCLASSIFICATION
If a discharge were to occur, it would be pumped into an unnamed dry wash, which is a Class 2B, 3C, 4accordingto Utah Administrative Code (UAC)R317-2-13:Class2BProtectedforinfrequentprimarycontactrecreation.Alsoprotectedforsecondarycontact
recreation where there is a low likelihood of ingestion of water or a lowdegree of bodily contact with the water. Examples include, but are not limited to,wading,hunting, andfishing.Class3CProtectedfornongamefishandother
aquaticlife,includingthenecessaryaquaticorganismsintheirfood chain.Class4Protectedfor agriculturalusesincludingirrigationofcropsandstockwatering.
BASISFOREFFLUENTLIMITATIONS
Effluent limits for total suspended solids (TSS), total uranium, total radium 226, dissolved radium 226,chemical oxygen demand (COD), and total zinc are technology-based standards for
uranium ore minesfoundin40CFR440.32and440.33.ThepHlimitisbasedoncurrentUtahSecondaryTreatmentstandards.
The total dissolved solids (TDS) concentration limit is the same as other uranium mining facility in theimmediate area; is based on Best Professional Judgment (BPJ) and is more stringent
than the Utah WaterQuality Standards for TDS. The oil & grease limit is based on BPJ. Temperature monitoring requirementis based on the TMDL from 2016. The Rim Mine is required to sample
and submit the analysis of thepollutants listed in 40 CFR Part 122 Appendix D Table III (Other Toxic Pollutants (Metals and Cyanide)andTotalPhenols)occurringfromthe firstdischarge.
Total dissolved solids (TDS) limitations are based on the Colorado River Basin Salinity Control Forum(CRBSCF) for mass loading values when applicable as authorized in UAC R317-2-4.Regarding
TDSloading, the CRBSCF Policy entitled “NPDES Permit Program Policy for Implementation of ColoradoRiver Salinity Standards” (Policy), with the most current version dated October 2017,
requires the TDSloading limitation of one-ton per day (or 366 tons per year) as a sum from all discharge points, unless theaverage concentration of TDS is 500 mg/L or less.If the concentration
of TDS at any Outfall is less thanor equal to 500 mg/L as a thirty-day average, then no loading limit applies for that Outfall. Those Outfallsexceeding500mg/Lasathirty-dayaverage,collectively,needtomeettheone-tonperday(or366tonsperyear)
limit.If one-ton per day (or 366 tons per year) TDS cannot be achieved, then the permittee will berequired to remove salinity/TDS in excess of one-ton per day (or 366 tons per year)
by developing atreatment process, participating in a salinity off-set program, or developing some type of mechanism toremove the salinity/TDS.The selection of a salinity control program
must be approved by the Director oftheDivisionofWaterQuality.
ReasonablePotentialAnalysis
Since January 1, 2016, DWQ has conducted reasonable potential analysis (RP) on all new and renewalapplications received after that date. RP for this permit was not conducted due to lack
of facility effluentdata.
Table 1
Parameter
EffluentLimitationsd,e
MaximumMonthlyAvg
DailyMinimum
DailyMaximum
Total Flow,MGDb
0.03
--
--

TSS,mg/L
20
--
30
TotalUranium,mg/L
2.0
--
4.0
TotalRadium226, pCi/L
10
--
30
Dissolved Radium226, pCi/L
3
--
10
Gross Alpha,pCi/L
--
--
15
COD, mg/L
100
--
200
Total Zinc
0.5
--
1.0
TotalDissolvedSolids,mg/L
--
--
1000
TotalDissolved Solids,tons/dayc
--
--
1.0
Oil&Grease,mg/Lf
--
--
10.0
pH,StandardUnits
--
6.5
9.0
Thepermitlimitationsare:
SELF-
MONITORINGANDREPORTINGREQUIREMENTS
The self-monitoring requirements are the same as in the previous permit with the addition of Temperaturemonitoring. The permit will require reports to be submitted monthly on Discharge
Monitoring Report(DMR)form(EPANo.3320-1)orbyNetDMR,post-markedorenteredintoNetDMRnolaterthanthe28thdayofthemonth followingthe completedreportingperiod.
Table 2
Self-MonitoringandReportingRequirementsa
Parameter
Frequency
SampleType
Units
ReportingFrequency
Total Flowb
Continuous
Recorder
MGD

Monthly
TSS
Monthly
Grab
mg/L
Monthly
TotalUranium
Monthly
Grab
mg/L
Monthly
Total Radium226
Monthly
Grab
pCi/L
Monthly
Dissolved Radium226
Monthly
Grab
pCi/L
Monthly
GrossAlpha
Monthly
Grab
pCi/L
Monthly
COD
Quarterly
Grab
mg/L
Quarterly
Total Zinc
Quarterly
Grab
mg/L
Quarterly
TotalDissolvedSolids
Quarterly
Grab
mg/L
Quarterly
TotalDissolvedSolids
Quarterly
Grab
tons/day
Quarterly
Oil &Grease
Quarterly
Grab
mg/L
Quarterly
pH
Monthly
Grab
StandardUnits
Monthly
Temperature
Monthly
Grab
°F

Monthly
TableReferences
a.SeeDefinitions,Part VIII,for definitionofterms.
b.Flow measurements of influent/effluent volume shall be made in such a manner that thepermitteecanaffirmativelydemonstratethatrepresentativevaluesare beingobtained.
c.TDSwillbelimitedtoamaximumdischargeof1.0tonperdayor366tonsperyear,withdailymaximum tonnage reported monthly. It is the permittee’s responsibility to monitor and reporttheactualdischarge
ofTDSforeach monitoringperiod.
d.Thereshallbeno dischargeof floatingsolidsorvisiblefoaminotherthantraceamounts.
e.Thereshall benodischargeofsanitarywastes.
f.AnOil&Greasesampleshallbetaken whenasheen isvisible.
EndTableReferences
The permittee is required to sample and submit the analysis of the pollutants listed in 40 CFR Part 122AppendixDTableIII(OtherToxicPollutants(MetalsandCyanide)andTotalPhenols)occurringfromthefirst
discharge of the facility. This UPDES permit may be reopened and the permit limits modified basedontheanalysis ofthese pollutants.
BIOSOLIDS
The State of Utah has adopted the 40 CFR 503 federal regulations for the disposal of sewage sludge(biosolids) by reference.However, this facility does not receive, generate, treat or
dispose of biosolids.Therefore40 CFR503doesnotapplyatthistime.
STORMWATER
Separatestormwaterpermitsmaybe requiredbasedon thetypes of activitiesoccurringonsite.
Permitcoverage under the MultiSector General Permit(MSGP) for Storm Water Discharges fromIndustrial Activities is required based on the Standard Industrial Classification (SIC) code
for the facilityand the types of industrial activities occurring. If the facility is not already covered, it has 30 days fromwhen this permit is issued to submit the appropriate Notice
of Intent (NOI) for the MSGP or exclusiondocumentation. Previously storm water dischargerequirementsand coveragewere combined in thisindividualpermit.Thesehavebeenseparatedtoprovideconsistencyamongpermittees,electronicreportingforstormwaterdischargemonitoringreports,andincrease
flexibilitytochangingsite conditions.
PermitcoverageundertheConstructionGeneralStormWaterPermit(CGP)isrequiredforanyconstructionat the facility which disturb an acre or more, or is part of a common plan of development or
sale that is anacreorgreater.ANoticeofIntent(NOI)isrequiredtoobtainaconstructionstormwaterpermitpriortotheperiodofconstruction.
Informationonstormwaterpermit requirementscanbefoundat http://stormwater.utah.gov
PRETREATMENTREQUIREMENTS
This facility does not discharge process wastewater to a sanitary sewer system. Any process wastewaterthat the facility may discharge to the sanitary sewer, either as a direct discharge
or as a hauled waste, issubjecttofederal,state,andlocalpretreatmentregulations.Pursuanttosection307oftheCleanWaterAct,thepermitteeshallcomplywithallapplicablefederalgeneralpretreatmentregulationspromulgated,foundin
40 CFR 403, the state’s pretreatment requirements found in UAC R317-8-8, and any specific localdischargelimitationsdevelopedbythePubliclyOwnedTreatment Works(POTW)acceptingthewaste.
In addition, in accordance with 40 CFR 403.12(p)(1), the permittee must notify the POTW, the EPARegional Waste Management Director, the DWQ Director and the State hazardous waste authorities,
inwriting, if they discharge any substance into a POTW which if otherwise disposed of would be considereda hazardous waste under 40 CFR 261. This notification must include the name of
the hazardous waste, theEPAhazardous wastenumber, and thetype ofdischarge(continuous orbatch).
BIOMONITORINGREQUIREMENTS
Anationwideefforttocontroltoxicdischargeswhereeffluenttoxicityisanexistingorpotentialconcernisregulated in accordance with the Utah Pollutant Discharge Elimination System Permit and
EnforcementGuidanceDocumentforWholeEffluentToxicityControl(biomonitoring),datedFebruary2018.Authorityto require effluent biomonitoring is provided in Permit Conditions, UAC R317-8-4.2,
Permit Provisions,UACR317-8-5.3 and Water QualityStandards, UACR317-2-5and R317-2-7.2.
The permittee is a minor industrial facility that will be discharging an infrequent amount of effluent, inwhich toxicity is neither an existing concern, nor likely to be present. Also,
the receiving water is listed asanunnamedephemeraldrainage.Basedontheseconsiderations,andtheabsenceofreceivingstreamwaterquality monitoring data, there is no reasonable potential for
toxicity in the permittee’s discharge (per Stateof Utah Permitting and Enforcement Guidance Document for WET Control).As such, there will be nonumerical WET limitations or WET monitoring
requirements in this permit.However, the permit willcontainatoxicitylimitationre-openerprovisionthatallowsformodificationofthepermitshouldadditionalinformationindicatethe presenceoftoxicityinthe
discharge.
PERMITDURATION
Itisrecommendedthatthispermit beeffectivefor adurationoffive(5) years.
DraftedandReviewedbySarahWard,DischargePermitWriter
Daniel Griffin, BiosolidsJennifer Robinson, PretreatmentLonnie Shull, BiomonitoringCarl Adams, StormWater
Lucy Parham, TMDL/WatershedSuzanTahir,WasteloadAnalysis
UtahDivisionofWater Quality,[phone]
PUBLICNOTICE
Began:June16,2021
Ended:July16,2021Commentswill bereceivedat:195North 1950West
POBox144870
Salt LakeCity,UT84114-4870
ThePublicNoticedofthedraftpermitwaspublishedonUtahDepartmentofEnvironmentalQuality’sPublicNoticewebsite.
ADDENDUMTOFSSOB
DuringfinalizationofthePermitcertaindates,spellingeditsandminorlanguagecorrectionswerecompleted.DuetothenatureofthesechangestheywerenotconsideredMajorandthepermitisnotrequiredtobere
Public Noticed.
RESPONSIVENESSSUMMARY
Nocommentswerereceived.
DWQ-2021-01564
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ATTACHMENT1

IndustrialWasteSurvey
ThisPage IntentionallyLeft Blank
IndustrialPretreatmentWastewaterSurvey
Do you periodically experience any of the following treatment works problems:foam,floaties orunusualcolors
plugged collection lines caused by grease, sand, flour, etc.discharging excessive suspended solids, even in the wintersmells unusuallybad
wastetreatmentfacilitydoesn’tseemto be treatingthewasteright
Perhaps the solution to a problem like one of these may lie in investigating the types and amounts ofwastewater enteringthe sewersystemfromindustrialusers.
An industrial user (IU) is defined as a non-domestic user discharging to the waste treatment facility whichmeetsanyofthe followingcriteria:hasalotofprocesswastewater(5%oftheflowatthewastetreatmentfacilityormorethan25,000
gallonsperworkday.)
Examples: Foodprocessor,dairy,slaughterhouse,industriallaundry.issubjecttoFederalCategoricalPretreatmentStandards;
Examples:metal plating, cleaning or coating of metals, blueing of metals, aluminum extruding,circuitboardmanufacturing,tanninganimalskins,pesticideformulatingorpackaging,and pharmaceutical
manufacturingorpackaging,isa concerntothePOTW.
Examples:septage hauler, restaurant and food service, car wash, hospital, photo lab, carpetcleaner,commerciallaundry.
Allusersofthewater treatmentfacilityareprohibitedfrommakingthefollowingtypesofdischarges:Adischargewhichcreatesafireor explosionhazardinthecollectionsystem.Adischargewhichcreatestoxicgases,vapor
orfumesinthecollectionsystem.Adischargeofsolidsorthickliquidswhichcreatesflowobstructionsinthecollectionsystem.Anacidicdischarge(lowpH) whichcausescorrosivedamagetothecollectionsystem.Petroleumoil,nonbiodegradablecuttingoil,orproductsofmineraloilorigininamountsthatwillcauseproblems
inthecollection systemorat the wastetreatmentfacility.Wastehaulersareprohibitedfromdischargingwithoutpermission.(Nomidnightdumping!)
When the solution to a sewer system problem may be found by investigating the types and amounts ofwastewaterenteringthesewersystemdischargedfromIUs,it’sappropriatetoconductanIndustrialWasteSurvey.
AnIndustrialWaste Survey consistsof:
Step1:IdentifyIndustrialUsers
Makealist ofall thecommercialandindustrial sewerconnections.
Sourcesforthelist:
businesslicense,buildingpermits,waterandwastewaterbilling,ChamberofCommerce,newspaper,telephone book, yellowpages.
Splitthelist intotwogroups:
domestic wastewater only--no further information neededeveryoneelse (IUs)
Step2:PreliminaryInspection
GovisiteachIUidentifiedonthe“everybodyelse” list.
Fill outthePreliminaryInspectionFormduringthesite visit.
Step3:InformingtheState
Pleasefaxorsenda copyofthePreliminaryinspectionform(bothsides) to:
JenniferRobinson
Division of Water Quality288 North 1460West
POBox144870
Salt LakeCity,UT84114-4870Phone:[phone]Fax:[phone]E-mail:[e-mail]
F:\WP\Pretreatment\Forms\IWS.doc
PRELIMINARYINSPECTIONFORMINSPECTIONDATE//Nameof BusinessPersonContactedAddressPhoneNumberDescriptionofBusiness Principalproductorservice: RawMaterialsused:
Production process is: [ ] Batch [ ] Continuous [ ] BothIsproduction subjecttoseasonalvariation?[]yes[]no
Ifyes,brieflydescribeseasonalproductioncycle.
Thisfacilitygeneratesthefollowingtypesofwastes(checkallthatapply):[]Domesticwastes(Restrooms,employeeshowers,etc.)
2.
[
]Coolingwater,non-contact
3.
[
]Boiler/Towerblowdown
4.
[
]Coolingwater,contact
5.
[
]Process
6.
[
]Equipment/Facilitywashdown
7.
[
]AirPollutionControlUnit
8.
[
]Stormwaterrunoffto sewer
9.

[
]Otherdescribe
Wastesaredischargedto(checkallthatapply):
[
]Sanitarysewer
[
]Stormsewer
[
]Surfacewater
[
]Groundwater
[
]Wastehaulers
[
]Evaporation
[
]Other(describe)
Nameof wastehauler(s),ifused
Isagreasetrap installed?
Yes
No
Isitoperational?
Yes
No
Doesthebusinessdischargealotof processwastewater?Morethan5%of theflow tothewastetreatmentfacility?
Yes
NoMorethan25,000 gallonsperworkday?
Yes
No
Doesthebusinessdoanyofthefollowing:
[
]Adhesives
[
]CarWash
[
]AluminumForming
[
]CarpetCleaner
[
]BatteryManufacturing
[
]Dairy
[
]CopperForming
[
]FoodProcessor
[
]Electric&ElectronicComponents
[
]Hospital
[
]ExplosivesManufacturing
[
]Laundries
[
]Foundries
[
]PhotoLab
[
]InorganicChemicalsMfg.orPackaging

[
]Restaurant&FoodService
[
]IndustrialPorcelainCeramicManufacturing
[
]SeptageHauler
[
]Iron &Steel
[
]SlaughterHouse
[
]Metal Finishing,CoatingorCleaning
[
]Mining
[
]NonferrousMetalsManufacturing
[
]OrganicChemicals ManufacturingorPackaging
[
]Paint&InkManufacturing
[
]PesticidesFormulatingorPackaging
[
] PetroleumRefining
[
]PharmaceuticalsManufacturingorPackaging
[
]PlasticsManufacturing
[
]RubberManufacturing
[
]Soaps&Detergents Manufacturing
[
]SteamElectric Generation
[
]TanningAnimalSkins
[
]TextileMillsAreanyprocess changesorexpansionsplannedduringthenextthreeyears?YesNoIf yes, attach a separate sheet to this form describing the nature of planned changes orexpansions.
Inspector
WasteTreatmentFacility
Pleasesendacopyofthepreliminaryinspectionform(bothsides)to:
Jennifer RobinsonDivision of Water QualityPOBox 144870
SaltLakeCity,Utah84114-4870Phone:[phone]Fax:[phone]E-Mail:[e-mail]
IndustrialUser
Jurisdiction
SIC
Codes
CategoricalStandardNumber
Total AverageProcessFlow(gpd)
Total AverageFacilityFlow(gpd)
FacilityDescription
1
2
3
4
5
6
7
8
9

10
11
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ATTACHMENT2
WasteloadAnalysis
ThisPage IntentionallyLeft Blank
Utah Division of Water QualityStatement of BasisADDENDUMWasteload Analysis and Antidegradation Level I ReviewDate:April29, 2021Preparedby:SuzanTahir
StandardsandTechnicalServicesFacility:Energy Fuels Resources (USA), Inc., Rim MineUPDESNo.UT-0023922Receivingwater:Unnamedephemeraldrainage=>EastCanyonWash=>HatchWash=>Kane Springs Creek(2B,
3C,4)
Thisaddendumsummarizesthewasteloadanalysisthatwasperformedtodeterminewaterqualitybasedeffluentlimits(WQBEL)forthisdischarge.Wasteloadanalysesareperformedtodeterminepoint source effluent
limitations necessary to maintain designated beneficial uses by evaluatingprojected effects of discharge concentrations on in-stream water quality. The wasteload analysisalso takes into
account downstream designated uses (UAC R317-2-8). Projected concentrationsare compared to numeric water quality standards to determine acceptability. The numeric criteriain this wasteload
analysis may be modified by narrative criteria and other conditions determinedbystaffofthe Divisionof Water Quality.
Discharge
This facility is an underground uranium mine. The water that is being discharged is groundwaterfrom the underground mine workings.This water is being pumped 710 feet to the surface into
aprimary settling pond. Water is then pumped to a treatment plant where barium chloride is addedasaflocculenttosettlemetalsandsolids.Thetreatedwateristhendirectedtoafinalsettlingpondbeforeitis
discharged toUPDESOutfall 001.
Themean monthlydesigndischargeforthefacilityis0.03MGD.
ReceivingWater
The Rim Mine is located on a dry plateau (rim). All drainages in the area are ephemeral. Thereceiving for Outfall 001 is an unnamed ephemeral drainage which flows approximately 2 milesnortheasttoEastCanyonWash;thenapproximately10milestoHatchWash,thentoKaneCanyonWash,and
finallyto Kane Canyon Creek.
PerUACR317-2-13.1,thedesignatedbeneficialusesofKaneCanyonCreekandtributaries,fromconfluencewith the Colorado Riverto headwatersis 2B, 3C, and 4.Class2B-Protectedforinfrequentprimarycontactrecreation.Alsoprotectedforsecondarycontact
recreationwherethereis alowlikelihoodof ingestionof water ora
Page1of3
lowdegreeofbodilycontactwiththewater.Examplesinclude,butarenotlimitedto,wading,hunting, and fishing.Class3C-Protectedfornongamefishandotheraquaticlife,includingthenecessaryaquaticorganisms
in their foodchain.Class4-Protectedforagriculturalusesincludingirrigationofcropsandstockwatering.
Flow
Typically, the critical flow for the wasteload analysis is considered the lowest stream flow forseven consecutive days with a ten year return frequency (7Q10).Because the discharge is
to anephemeral wash, the critical low flow condition (7Q10) of the receiving water would be zero.Asaresult,effluentlimitsreverttothewaterqualitystandards.WaterQualityStandardsarepresentedinthe
WLA Addendum.
TMDL
AccordingtotheUtah’s2016303(d)WaterQualityAssessment,KaneSpringWashfromconfluence with Colorado River to headwaters (UT14030005-001_00) is listed as impaired fortemperature (3C Use Class)
and Total Dissolved Solids (Use Class 4). No TMDL has beencompletedat thistime.
MixingZone
The maximum allowable mixing zone is 15 minutes of travel time for acute conditions, not toexceed 50% of stream width, and 2,500 feet for chronic conditions, per UAC R317-2-5.Waterqualitystandards
must be met at theend ofthe mixing zone.
No mixing zone was considered as the annual critical flow in the receiving water for Outfall 001wasconsidered to be 0.
ParametersofConcern
Thepotentialparametersofconcernidentifiedforthedischarge/receivingwaterweretotaldissolved solids, total uranium, radium and zinc as determined in consultation with the UPDESPermit Writer.
WETLimits
The percent of effluent in the receiving water in a fully mixed condition, and acute and chronicdilutioninanotfullymixedconditionarecalculatedintheWLAinordertogenerateWETlimits.The LC50
(lethal concentration, 50%) percent effluent for acute toxicity and the IC25 (inhibitionconcentration,25%)percenteffluentforchronictoxicity,asdeterminedbytheWETtest,needstobe below the
WET limits, as determined by the WLA. The WET limit for LC50 is typically 100%effluentand does not need to bedetermined by theWLA.
WasteloadAllocationMethods
Effluentlimitsweredeterminedforconservativeconstituentsusingasimplemassbalancemixinganalysis(UDWQ2012).ThemassbalanceanalysisissummarizedintheWasteloadAddendum.
ThewaterqualitystandardforchronicammoniatoxicityisdependentontemperatureandpH,andthewaterqualitystandardforacuteammoniatoxicityisdependentonpH.TheAMMTOXModeldeveloped by University of
Colorado and adapted by Utah DWQ and EPA Region VIII was usedto determine ammonia effluent limits (Lewis et al. 2002). The analysis is summarized in theWasteloadAddendum.
Modelsandsupportingdocumentationareavailableforreviewuponrequest.
AntidegradationLevelIReview
The objective of the Level I ADR is to ensure the protection of existing uses, defined as thebeneficial uses attained in the receiving water on or after November 28, 1975.No evidence
isknown that the existing uses deviate from the designated beneficial uses for the receiving water.Therefore, the beneficial uses will be protected if the discharge remains below the
WQBELspresentedinthis wasteload.
A Level II Antidegradation Review (ADR) is not required for this facility because there is noincreasein permitted concentrationsor flowoverthe previous permit.
Documents:
WLADocument:RimMine_WLADoc_4-29-2021.docx
WasteloadAnalysisandAddendum:RimMine_WLA_4-29-2021.xlsm
References:
UtahDivisionofWaterQuality.2012.UtahWasteloadAnalysisProceduresVersion1.0.
Lewis,B.,J.Saunders,andM.Murphy.2002.AmmoniaToxicityModel(AMMTOX,Version2):AToolforDetermining EffluentAmmoniaLimits.UniversityofColorado, CenterforLimnology.
WASTELOADANALYSIS[WLA]

Addendum:StatementofBasis
SUMMARY
DischargingFacility:
EnergyFuelsResources,RimMine
UPDESNo:
UT-0023922
CurrentFlow:
0.03
MGD
DesignFlow
0.03
MGD
-end-of-pipelimits.Nodilution.
0.05
cfs
0.05
cfs
ReceivingWater:
Unnamedephemeraldrainage=>KaneCanyonCreek
StreamClassification:
2B,3C,4
Stream Flows[cfs]:
0.0
Summer(July-Sept)
20thPercentile
0.0
Fall(Oct-Dec)
20thPercentile
0.0
Winter (Jan-Mar)
20thPercentile
0.0
Spring(Apr-June)
20thPercentile
0.0
Average
Stream TDSValues:
1200.0
Summer(July-Sept)
Average
1200.0
Fall(Oct-Dec)
Average
1200.0
Winter (Jan-Mar)
Average
1200.0
Spring(Apr-June)
Average
EffluentLimits:
WQStandard:
Flow,MGD:
0.03
MGD
DesignFlow
BOD,mg/l:
25.0
Summer
5.0
Indicator

DissolvedOxygen,mg/l
5.5
Summer
5.0
30DayAverage
TNH3,Chronic,mg/l:
1.4
Summer
Varies
FunctionofpHandTemperature
TDS,mg/l:
1200.0
Summer
1200.0
`
ModelingParameters:
AcuteRiverWidth:
50.0%
ChronicRiverWidth:
100.0%
WASTELOADANALYSIS[WLA]
Addendum:StatementofBasis
26-Apr-21
4:00 PM
Facilities:
EnergyFuelsResources,RimMine
Dischargingto:
Unnamedephemeraldrainage=>KaneCanyonCreek
UPDESNo:
UT-0023922Introduction
Wasteloadanalysesareperformedtodeterminepointsourceeffluentlimitationsnecessarytomaintaindesignated
beneficialusesbyevaluatingprojectedeffectsofdischargeconcentrationsonin-streamwaterquality.The
wasteloadanalysisalsotakesintoaccountdownstreamdesignateduses[R317-2-8,UAC].Projectedconcen-
trationsarecomparedtonumericwaterqualitystandardstodetermineacceptability.Theanti-degradation
policyandproceduresarealsoconsidered.Theprimaryin-streamparametersofconcernmayincludemetals
(asafunctionofhardness),totaldissolvedsolids(TDS),totalresidualchlorine(TRC),un-ionizedammonia(asa
functionofpHandtemperature,measuredandevaluatedintermsoftotalammonia),anddissolvedoxygen.
Mathematicalwaterqualitymodelingisemployedtodeterminestreamqualityresponsetopointsourcedischarges.
Modelsaidintheeffortofanticipatingstreamqualityatfutureeffluentflowsatcriticalenvironmentalconditions
(e.g.,lowstream flow,hightemperature,highpH,etc).
Thenumericcriteriainthiswasteloadanalysismayalwaysbemodifiedbynarrativecriteriaandotherconditions
determinedbystaffoftheDivisionofWaterQuality.ReceivingWaterandStreamClassification
Unnamedephemeraldrainage=>Kane
CanyonCreek:
2B,3C,4
AntidegradationReview:
AntidegradationLevelIIReviewisnotrequiredNumericStreamStandardsforProtectionofAquaticWildlife
VariesasafunctionofTemperatureand
pHRebound.SeeWaterQualityStandards
TotalAmmonia(TNH3)
0.011
mg/l(4DayAverage)
0.019
mg/l(1HourAverage)
ChronicTotalResidualChlorine(TRC)
5.00
mg/l(30DayAverage)
N/A
mg/l(7DayAverage)
3.00

mg/l(1DayAverage
ChronicDissolvedOxygen(DO)
1200.0
mg/l
MaximumTotalDissolvedSolids
AcuteandChronicHeavyMetals(Dissolved)4DayAverage(Chronic)StandardConcentrationLo
1HourAverage(Acute)StandardConcentrationLoad*
Parameterad*
Aluminum
87.00
ug/l**
0.022
lbs/day
750.00
ug/l
0.188
lbs/day
Arsenic
190.00
ug/l
0.048
lbs/day
340.00
ug/l
0.085
lbs/day
Cadmium
0.76
ug/l
0.000
lbs/day
8.73
ug/l
0.002
lbs/day
ChromiumIII
268.22
ug/l
0.067
lbs/day
5611.67
ug/l
1.404
lbs/day
ChromiumVI
11.00
ug/l
0.003
lbs/day
16.00
ug/l
0.004
lbs/day
Copper
30.50
ug/l
0.008
lbs/day
51.68
ug/l

0.013
lbs/day
Iron
1000.00
ug/l
0.250
lbs/day
Lead
18.58
ug/l
0.005
lbs/day
476.82
ug/l
0.119
lbs/day
Mercury
0.0120
ug/l
0.000
lbs/day
2.40
ug/l
0.001
lbs/day
Nickel
168.54
ug/l
0.042
lbs/day
1515.91
ug/l
0.379
lbs/day
Selenium
4.60
ug/l
0.001
lbs/day
20.00
ug/l
0.005
lbs/day
Silver
N/A
ug/l
N/A
lbs/day
41.07
ug/l
0.010
lbs/day
Zinc
387.83
ug/l
0.097
lbs/day
387.83
ug/l
0.097

lbs/day
*Allowedbelowdischarge
**ChronicAluminumstandardappliesonlytowaterswithapH<7.0andaHardness<50mg/lasCaCO3
MetalsStandardsBaseduponaHardnessof400mg/lasCaCO3
Organics[Pesticides]
4DayAverage(Chronic)Standard
1HourAverage(Acute)Standard
Parameter
Concentration
Load*
Concentration
Load*
Aldrin
1.500
ug/l
0.000
lbs/day
Chlordane
0.004
ug/l
0.001
lbs/day
1.200
ug/l
0.000
lbs/day
DDT,DDE
0.001
ug/l
0.000
lbs/day
0.550
ug/l
0.000
lbs/day
Dieldrin
0.002
ug/l
0.000
lbs/day
1.250
ug/l
0.000
lbs/day
Endosulfan
0.056
ug/l
0.014
lbs/day
0.110
ug/l
0.000
lbs/day
Endrin
0.002
ug/l
0.001
lbs/day
0.090
ug/l

0.000
lbs/day
Guthion
0.010
ug/l
0.000
lbs/day
Heptachlor
0.004
ug/l
0.001
lbs/day
0.260
ug/l
0.000
lbs/day
Lindane
0.080
ug/l
0.020
lbs/day
1.000
ug/l
0.000
lbs/day
Methoxychlor
0.030
ug/l
0.000
lbs/day
Mirex
0.010
ug/l
0.000
lbs/day
Parathion
0.040
ug/l
0.000
lbs/day
PCB's
0.014
ug/l
0.004
lbs/day
2.000
ug/l
0.001
lbs/day
Pentachlorophenol
13.00
ug/l
3.252
lbs/day
20.000
ug/l
0.005
lbs/day
Toxephene
0.0002

ug/l
0.000
lbs/day
0.7300
ug/l
0.000
lbs/day
IV.NumericStreamStandardsforProtectionofAgriculture
4DayAverage(Chronic)StandardConcentrationLoad
Arsenic
Boron
Cadmium
Chromium
Copper
Lead
Selenium
TDS,Summer
1HourAverage(Acute)Standard
Concentration
Load*
100.0
ug/l
lbs/day
750.0
ug/l
lbs/day
10.0
ug/l
0.00
lbs/day
100.0
ug/l
lbs/day
200.0
ug/l
lbs/day
100.0
ug/l
lbs/day
50.0
ug/l
lbs/day
1200.0
mg/l
0.15
tons/day
*
V.NumericStreamStandardsforProtectionofHumanHealth(Class1CWaters)
4DayAverage(Chronic)Standard
1HourAverage(Acute)Standard
MetalsConcentrationLoad*
Concentration
Load*
Arsenic
ug/l
lbs/day
Barium
ug/l
lbs/day
Cadmium

ug/l
lbs/day
Chromium
ug/l
lbs/day
Lead
ug/l
lbs/day
Mercury
ug/l
lbs/day
Selenium
ug/l
lbs/day
Silver
ug/l
lbs/day
Fluoride(3)
ug/l
lbs/day
to
ug/l
lbs/day
NitratesasN
ug/l
lbs/day
ChlorophenoxyHerbicides
2,4-D
2,4,5-TP
Endrin
ocyclohexane(Lindane)
Methoxychlor
Toxaphene
ug/l
lbs/day
ug/l
lbs/day
ug/l
lbs/day
ug/l
lbs/day
ug/l
lbs/day
ug/l
lbs/dayNumericStreamStandardstheProtectionofHumanHealthfromWater&FishConsumption[Toxics]
ToxicOrganics
Acenaphthene
Acrolein
Acrylonitrile
Benzene
Benzidine
Carbontetrachloride
Chlorobenzene
1,2,4-Trichlorobenzene
Hexachlorobenzene
1,2-Dichloroethane
1,1,1-Trichloroethane
Hexachloroethane
MaximumConc.,ug/l-AcuteStandards
Class1C

Class3A,3B
[2Liters/Dayfor70KgPersonover70Yr.]
[6.5gfor70KgPersonover70Yr.]
ug/l
lbs/day
2700.0
ug/l
0.68
lbs/day
ug/l
lbs/day
780.0
ug/l
0.20
lbs/day
ug/l
lbs/day
0.7
ug/l
0.00
lbs/day
ug/l
lbs/day
71.0
ug/l
0.02
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
4.4
ug/l
0.00
lbs/day
ug/l
lbs/day
21000.0
ug/l
5.25
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
99.0
ug/l
0.02
lbs/day
ug/l
lbs/day
8.9

ug/l
0.00
lbs/day1,1-Dichloroethane
1,1,2-Trichloroethane
1,1,2,2-Tetrachloroetha
Chloroethane
Bis(2-chloroethyl)ether
2-Chloroethylvinylether
2-Chloronaphthalene
2,4,6-Trichlorophenol
p-Chloro-m-cresol
Chloroform(HM)
2-Chlorophenol
1,2-Dichlorobenzene
1,3-Dichlorobenzene
1,4-Dichlorobenzene
3,3'-Dichlorobenzidine
1,1-Dichloroethylene
1,2-trans-Dichloroethyle
2,4-Dichlorophenol
1,2-Dichloropropane
1,3-Dichloropropylene
2,4-Dimethylphenol
2,4-Dinitrotoluene
2,6-Dinitrotoluene
1,2-Diphenylhydrazine
Ethylbenzene
Fluoranthene
4-Chlorophenylphenylether
4-Bromophenylphenylether
Bis(2-chloroisopropyl)e
Bis(2-chloroethoxy)met
Methylenechloride(HM
Methylchloride(HM)
Methylbromide(HM)
Bromoform(HM)
Dichlorobromomethane
Chlorodibromomethane
Hexachlorobutadiene(c)
Hexachlorocyclopentadi
Isophorone
Naphthalene
Nitrobenzene
2-Nitrophenol
4-Nitrophenol
2,4-Dinitrophenol
4,6-Dinitro-o-cresol
N-Nitrosodimethylamine
N-Nitrosodiphenylamine
N-Nitrosodi-n-propylami
Pentachlorophenol
Phenol
Bis(2-ethylhexyl)phthala
Butylbenzylphthalate
Di-n-butylphthalate
Di-n-octylphthlateug/l
lbs/day
42.0
ug/l
0.01

lbs/day
ug/l
lbs/day
11.0
ug/l
0.00
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
1.4
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
4300.0
ug/l
1.08
lbs/day
ug/l
lbs/day
6.5
ug/l
0.00
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
470.0
ug/l
0.12
lbs/day
ug/l
lbs/day
400.0
ug/l
0.10
lbs/day
ug/l
lbs/day
17000.0
ug/l
4.25
lbs/day
ug/l
lbs/day
2600.0

ug/l
0.65
lbs/day
ug/l
lbs/day
2600.0
ug/l
0.65
lbs/day
ug/l
lbs/day
0.1
ug/l
0.00
lbs/day
ug/l
lbs/day
3.2
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
790.0
ug/l
0.20
lbs/day
ug/l
lbs/day
39.0
ug/l
0.01
lbs/day
ug/l
lbs/day
1700.0
ug/l
0.43
lbs/day
ug/l
lbs/day
2300.0
ug/l
0.58
lbs/day
ug/l
lbs/day
9.1
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0

ug/l
0.00
lbs/day
ug/l
lbs/day
0.5
ug/l
0.00
lbs/day
ug/l
lbs/day
29000.0
ug/l
7.25
lbs/day
ug/l
lbs/day
370.0
ug/l
0.09
lbs/day
ug/l
lbs/day
170000.0
ug/l
42.53
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
1600.0
ug/l
0.40
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
360.0
ug/l
0.09
lbs/day
ug/l
lbs/day
22.0

ug/l
0.01
lbs/day
ug/l
lbs/day
34.0
ug/l
0.01
lbs/day
ug/l
lbs/day
50.0
ug/l
0.01
lbs/day
ug/l
lbs/day
17000.0
ug/l
4.25
lbs/day
ug/l
lbs/day
600.0
ug/l
0.15
lbs/day
ug/l
lbs/day
1900.0
ug/l
0.48
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
14000.0
ug/l
3.50
lbs/day
ug/l
lbs/day
765.0
ug/l
0.19
lbs/day
ug/l
lbs/day
8.1

ug/l
0.00
lbs/day
ug/l
lbs/day
16.0
ug/l
0.00
lbs/day
ug/l
lbs/day
1.4
ug/l
0.00
lbs/day
ug/l
lbs/day
8.2
ug/l
0.00
lbs/day
ug/l
lbs/day
4.6E+06
ug/l
1.15E+03
lbs/day
ug/l
lbs/day
5.9
ug/l
0.00
lbs/day
ug/l
lbs/day
5200.0
ug/l
1.30
lbs/day
ug/l
lbs/day
12000.0
ug/l
3.00
lbs/dayDiethylphthalate
Dimethylphthlate
Benzo(a)anthracene(P
Benzo(a)pyrene(PAH)
Benzo(b)fluoranthene(P
Benzo(k)fluoranthene(P
Chrysene(PAH)
Acenaphthylene(PAH)
Anthracene(PAH)
Dibenzo(a,h)anthracene
Indeno(1,2,3-cd)pyrene
Pyrene(PAH)
Tetrachloroethylene
Toluene
Trichloroethylene
Vinylchloride

Pesticides
Aldrin
Dieldrin
Chlordane
4,4'-DDT
4,4'-DDE
4,4'-DDD
alpha-Endosulfan
beta-Endosulfan
Endosulfansulfate
Endrin
Endrinaldehyde
Heptachlor
Heptachlorepoxide
PCB's
PCB1242(Arochlor124
PCB-1254(Arochlor12
PCB-1221(Arochlor12
PCB-1232(Arochlor12
PCB-1248(Arochlor12
PCB-1260(Arochlor12
PCB-1016(Arochlor10
Pesticide
Toxapheneug/l
lbs/day
120000.0
ug/l
30.02
lbs/day
ug/l
lbs/day
2.9E+06
ug/l
7.25E+02
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l

lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
11000.0
ug/l
2.75
lbs/day
ug/l
lbs/day
8.9
ug/l
0.00
lbs/day
ug/l
lbs/day
200000
ug/l
50.03
lbs/day
ug/l
lbs/day
81.0
ug/l
0.02
lbs/day
ug/l
lbs/day
525.0
ug/l
0.13
lbs/day
lbs/day
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00

lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
2.0
ug/l
0.00
lbs/day
ug/l
lbs/day
2.0
ug/l
0.00
lbs/day
ug/l
lbs/day
2.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.8
ug/l
0.00
lbs/day
ug/l
lbs/day
0.8
ug/l
0.00

lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
lbs/day
0.0
ug/l
0.00
lbs/day
ug/l
0.0
ug/l
0.00
lbs/day
Dioxin
Dioxin(2,3,7,8-TCDD)
ug/l
lbs/day
Metals
Antimony

ug/l
lbs/day
Arsenic
ug/l
lbs/day
4300.00
ug/l
1.08
lbs/day
Asbestos
ug/l
lbs/day
Beryllium
Cadmium
Chromium(III)
Chromium(VI)
Copper
Cyanide
ug/l
lbs/day
2.2E+05
ug/l
55.03
lbs/day
Lead
ug/l
lbs/day
Mercury
0.15
ug/l
0.00
lbs/day
Nickel
4600.00
ug/l
1.15
lbs/day
Selenium
ug/l
lbs/day
Silver
ug/l
lbs/day
Thallium
6.30
ug/l
0.00
lbs/day
Zinc
Thereareadditionalstandardsthatapplytothisreceivingwater,butwerenot
consideredinthismodeling/wasteloadallocationanalysis.MathematicalModelingofStreamQuality
Modelconfigurationwasaccomplishedutilizingstandardmodelingprocedures.Datapointswere
plottedandcoefficientsadjustedasrequiredtomatchobserveddataascloselyaspossible.
Themodelingapproachusedinthisanalysisincludedoneoracombinationofthefollowing
models.
(1)TheUtahRiverModel,UtahDivisionofWaterQuality,1992.BaseduponSTREAMDOIV
(RegionVIII)andSupplementalAmmoniaToxicityModels;EPARegionVIII,Sept.1990and
QUAL2E(EPA,Athens,GA).UtahAmmonia/ChlorineModel,UtahDivisionofWaterQuality,1992.AMMTOXModel,UniversityofColorado,CenterofLimnology,andEPARegion8
(4)PrinciplesofSurfaceWaterQualityModelingandControl.RobertV.Thomann,et.al.
HarperCollinsPublisher,Inc.1987,pp.644.

Coefficientsusedinthemodelwerebased,inpart,uponthefollowingreferences:
(1)Rates,Constants,andKineticsFormulationsinSurfaceWaterQualityModeling.Environmen-
talResearchLaboratory,OfficeofResearchandDevelopment,U.S.EnvironmentalProtection
Agency,AthensGeorgia.EPA/600/3-85/040June1985.
(2)PrinciplesofSurfaceWaterQualityModelingandControl.RobertV.Thomann,et.al.
HarperCollinsPublisher,Inc.1987,pp.644.ModelingInformation
Therequiredinformationforthemodelmayincludethefollowinginformationforboththe
upstreamconditionsatlowflowandtheeffluentconditions:Flow,Q,(cfsorMGD)D.O.mg/lTemperature,Deg.C.TotalResidualChlorine(TRC),mg/lpH
BOD5,mg/l
Metals,ug/lTotalNH3-N,mg/l
TotalDissolvedSolids(TDS),mg/l
ToxicOrganicsofConcern,ug/l
OtherConditions
Inadditiontotheupstreamandeffluentconditions,themodelsrequireavarietyofphysicaland
biologicalcoefficientsandothertechnicalinformation.Intheprocessofactuallyestablishingthe
permitlimitsforaneffluent,valuesareusedbasedupontheavailabledata,modelcalibration,
literaturevalues,sitevisitsandbestprofessionaljudgement.
ModelInputs
Thefollowingisupstream anddischargeinformationthatwasutilizedasinputsfortheanalysis.
Drywashesareconsideredtohaveanupstreamflowequaltotheflowofthedischarge.
CurrentUpstreamInformation
StreamCriticalLow
Flow
Temp.
pH
T-NH3
BOD5
DO
TRC
TDS
cfs
Deg.C
mg/lasN
mg/l
mg/l
mg/l
mg/l
Summer(Irrig.Season)
0.0
20.0
8.2
0.01
0.10
10.12
0.00
1200.0
Fall
0.0
12.0
8.2
0.01
0.10
---
0.00
1200.0
Winter
0.0
5.0
8.2
0.01

0.10
---
0.00
1200.0
Spring
0.0
12.0
8.2
0.01
0.10
---
0.00
1200.0
Dissolved
Al
As
Cd
CrIII
CrVI
Copper
Fe
Pb
Metals
ug/l
ug/l
ug/l
ug/l
ug/l
ug/l
ug/l
ug/l
AllSeasons
1.59*
0.53*
0.053*
0.53*
2.65*
0.53*
0.6
0.53*
Dissolved
Hg
Ni
Se
Ag
Zn
Boron
Metals
ug/l
ug/l
ug/l
ug/l
ug/l
ug/l
AllSeasons
0.0000
0.53*
1.06*
0.1*
0.053*

10.0
*1/2MDLProjectedDischargeInformation
Season
Summer
Fall
Winter
SpringFlow,MGD
Temp.
TDS
mg/l
TDS
tons/day
0.03000
25.3
464.75
0.05813
0.03000
9.5
0.03000
7.4
0.03000
12.7
Allmodelnumericalinputs,intermediatecalculations,outputsandgraphsareavailablefor
discussion,inspectionandcopyattheDivisionofWaterQuality.EffluentLimitations
CurrentStatewaterqualitystandardsarerequiredtobemetunderavarietyofconditionsincluding
in-streamflowstargetedtothe7-day,10-yearlowflow(R317-2-9).
Otherconditionsusedinthemodelingeffortcoincidewiththeenvironmentalconditionsexpected
atlowstreamflows.
EffluentLimitationforFlow baseduponWaterQualityStandardsIn-streamcriteriaofdownstreamsegmentswillbemetwithaneffluentflowmaximumvalueasfollows:SeasonDailyAverage
Summer
0.030
MGD
0.046
cfs
Fall
0.030
MGD
0.046
cfs
Winter
0.030
MGD
0.046
cfs
Spring
0.030
MGD
0.046
cfs
FlowRequirementorLoadingRequirement
Thecalculationsinthiswasteloadanalysisutilizethemaximumeffluentdischargeflowof0.03MGD.Ifthe
dischargerisallowedtohaveaflowgreaterthan0.03MGDduring7Q10conditions,andeffluentlimit
concentrationsasindicated,thenwaterqualitystandardswillbeviolated.Inordertopreventthisfromoccuring,
thepermitwritersmustincludethedischargeflowlimititationasindicatedabove;or,includeloadingeffluent
limitsinthepermit.
EffluentLimitationforWholeEffluentToxicity(WET)baseduponWET Policy
EffluentToxicitywillnotoccurindownstream segementsifthevaluesbelowaremet.
LC50>
EOP
Effluent

[Acute]
IC25>
100.0%
Effluent
[Chronic]
WETRequirements
EffluentLimitationforBiologicalOxygenDemand(BOD)baseduponWaterQuality
StandardsorRegulations
In-streamcriteriaofdownstreamsegmentsforDissolvedOxygenwillbemetwithaneffluentBOD
limitationasfollows:SeasonConcentration
Summer
Fall
Winter
Spring
25.0
mg/las BOD5
25.0
mg/las BOD5
25.0
mg/las BOD5
25.0
mg/las BOD5
6.3
lbs/day
6.3
lbs/day
6.3
lbs/day
6.3
lbs/day
EffluentLimitationforDissolvedOxygen(DO)baseduponWaterQualityStandards
In-streamcriteriaofdownstreamsegmentsforDissolvedOxygenwillbemetwithaneffluent
D.O.limitationasfollows:SeasonConcentration
Summer
Fall
Winter
Spring
5.50
5.50
5.50
5.50
EffluentLimitationforTotalAmmoniabaseduponWaterQualityStandards
In-streamcriteriaofdownstreamsegmentsforTotalAmmoniawillbemetwithaneffluent
limitation(expressedasTotalAmmoniaasN)asfollows:
SeasonConcentrationLoad
Summer
4DayAvg.-Chronic
1HourAvg.-Acute
Fall
4DayAvg.-Chronic
1HourAvg.-Acute
Winter
4DayAvg.-Chronic
1HourAvg.-Acute
Spring
4DayAvg.-Chronic
1HourAvg.-Acute
1.4
mg/las N
0.3

lbs/day
3.4
mg/las N
0.9
lbs/day
1.9
mg/las N
0.5
lbs/day
4.8
mg/las N
1.2
lbs/day
4.0
mg/las N
1.0
lbs/day
11.4
mg/las N
2.9
lbs/day
1.9
mg/las N
0.5
lbs/day
4.8
mg/las N
1.2
lbs/day
AcutelimitcalculatedwithanAcuteZoneofInitialDilution(ZID)tobeequalto100.%.
EffluentLimitationforTotalResidualChlorinebaseduponWaterQualityStandards
In-streamcriteriaofdownstreamsegmentsforTotalResidualChlorinewillbemetwithaneffluent
limitationasfollows:SeasonConcentrationLoad
Summer
4DayAvg.-Chronic
1HourAvg.-Acute
Fall
4DayAvg.-Chronic
1HourAvg.-Acute
Winter
4DayAvg.-Chronic
1HourAvg.-Acute
Spring
4DayAvg.-Chronic
1HourAvg.-Acute
0.011
mg/l
0.00
lbs/day
0.019
mg/l
0.00
lbs/day
0.011
mg/l
0.00
lbs/day
0.019
mg/l
0.00

lbs/day
0.011
mg/l
0.00
lbs/day
0.019
mg/l
0.00
lbs/day
0.011
mg/l
0.00
lbs/day
0.019
mg/l
0.00
lbs/day
EffluentLimitationsforTotalDissolvedSolidsbaseduponWaterQualityStandardsSeasonConcentrationLoad
Summer
Maximum,Acute
Fall
Maximum,Acute
Winter
Maximum,Acute
Spring
Maximum,Acute
1200.0
mg/l
0.15
tons/day
1200.0
mg/l
0.15
tons/day
1200.0
mg/l
0.15
tons/day
1200.0
mg/l
0.15
tons/dayColoradoSalinityForumLimitsDeterminedbyPermittingSection
EffluentLimitationsforTotalRecoverableMetalsbasedupon
WaterQualityStandards
In-streamcriteriaofdownstreamsegmentsforDissolvedMetalswillbemetwithaneffluent
limitationasfollows(baseduponahardnessof400mg/l):
4DayAverage
Concentration
Load
1HourAverageentrationLoad
Conc
Aluminum
N/A
N/A
750.0
ug/l
0.2
lbs/day
Arsenic
190.00

ug/l
0.0
lbs/day
340.0
ug/l
0.1
lbs/day
Cadmium
0.76
ug/l
0.0
lbs/day
8.7
ug/l
0.0
lbs/day
ChromiumIII
268.23
ug/l
0.0
lbs/day
5,611.8
ug/l
1.4
lbs/day
ChromiumVI
11.00
ug/l
0.0
lbs/day
16.0
ug/l
0.0
lbs/day
Copper
30.50
ug/l
0.0
lbs/day
51.7
ug/l
0.0
lbs/day
Iron
N/A
N/A
1,000.0
ug/l
0.3
lbs/day
Lead
18.58
ug/l
0.0
lbs/day
476.8
ug/l
0.1
lbs/day
Mercury

0.01
ug/l
0.0
lbs/day
2.4
ug/l
0.0
lbs/day
Nickel
168.54
ug/l
0.0
lbs/day
1,515.9
ug/l
0.4
lbs/day
Selenium
4.60
ug/l
0.0
lbs/day
20.0
ug/l
0.0
lbs/day
Silver
N/A
ug/l
N/A
lbs/day
41.1
ug/l
0.0
lbs/day
Zinc
387.84
ug/l
0.1
lbs/day
387.8
ug/l
0.1
lbs/day
Cyanide
5.20
ug/l
0.0
lbs/day
22.0
ug/l
0.0
lbs/day
EffluentLimitationsforHeat/Temperaturebasedupon
WaterQualityStandards
Summer
22.0
Deg.C.
71.6
Deg.F

Fall
14.0
Deg.C.
57.2
Deg.F
Winter
7.0
Deg.C.
44.6
Deg.F
Spring
14.0
Deg.C.
57.2
Deg.F
EffluentLimitationsforOrganics[Pesticides]
BaseduponWaterQualityStandards
In-streamcriteriaofdownstreamsegmentsforOrganics[Pesticides]
willbemetwithaneffluentlimitasfollows:
4DayAverage
Concentration
Load
1HourAverageentrationLoad
Conc
Aldrin
1.5E+00
ug/l
5.80E-04
lbs/day
Chlordane
4.30E-03
ug/l
1.08E-03
lbs/day
1.2E+00
ug/l
4.64E-04
lbs/day
DDT,DDE
1.00E-03
ug/l
2.50E-04
lbs/day
5.5E-01
ug/l
2.13E-04
lbs/day
Dieldrin
1.90E-03
ug/l
4.75E-04
lbs/day
1.3E+00
ug/l
4.84E-04
lbs/day
Endosulfan
5.60E-02
ug/l
1.40E-02

lbs/day
1.1E-01
ug/l
4.26E-05
lbs/day
Endrin
2.30E-03
ug/l
5.75E-04
lbs/day
9.0E-02
ug/l
3.48E-05
lbs/day
Guthion
0.00E+00
ug/l
0.00E+00
lbs/day
1.0E-02
ug/l
3.87E-06
lbs/day
Heptachlor
3.80E-03
ug/l
9.51E-04
lbs/day
2.6E-01
ug/l
1.01E-04
lbs/day
Lindane
8.00E-02
ug/l
2.00E-02
lbs/day
1.0E+00
ug/l
3.87E-04
lbs/day
Methoxychlor
0.00E+00
ug/l
0.00E+00
lbs/day
3.0E-02
ug/l
1.16E-05
lbs/day
Mirex
0.00E+00
ug/l
0.00E+00
lbs/day
1.0E-02
ug/l
3.87E-06
lbs/day
Parathion

0.00E+00
ug/l
0.00E+00
lbs/day
4.0E-02
ug/l
1.55E-05
lbs/day
PCB's
1.40E-02
ug/l
3.50E-03
lbs/day
2.0E+00
ug/l
7.74E-04
lbs/day
Pentachlorophenol
1.30E+01
ug/l
3.25E+00
lbs/day
2.0E+01
ug/l
7.74E-03
lbs/day
Toxephene
2.00E-04
ug/l
5.00E-05
lbs/day
7.3E-01
ug/l
2.82E-04
lbs/day
EffluentTargetsforPollutionIndicators
BaseduponWaterQualityStandards
In-streamcriteriaofdownstreamsegmentsforPollutionIndicators
willbemetwithaneffluentlimitasfollows:
1HourAverage
Concentration
Loading
GrossBeta(pCi/l)
BOD(mg/l)
NitratesasN
TotalPhosphorusasP
TotalSuspendedSolids
50.0
pCi/L
5.0
mg/l
1.3
lbs/day
4.0
mg/l
1.0
lbs/day
0.05
mg/l
0.0

lbs/day
90.0
mg/l
22.5
lbs/day
Note:Pollutionindicatortargetsareforinformationpurposesonly.
EffluentLimitationsforProtectionofHumanHealth[ToxicsRule]
BaseduponWaterQualityStandards(Moststringentof1Cor3A&3Basappropriate.)
In-streamcriteriaofdownstreamsegmentsforProtectionofHumanHealth[Toxics]
willbemetwithaneffluentlimitasfollows:
MaximumConcentrationConcentrationLoad
ToxicOrganics
Acenaphthene
2.70E+03
ug/l
6.75E-01
lbs/day
Acrolein
7.80E+02
ug/l
1.95E-01
lbs/day
Acrylonitrile
6.60E-01
ug/l
1.65E-04
lbs/day
Benzene
7.10E+01
ug/l
1.78E-02
lbs/day
Benzidine
ug/l
lbs/day
Carbontetrachloride
4.40E+00
ug/l
1.10E-03
lbs/day
Chlorobenzene
2.10E+04
ug/l
5.25E+00
lbs/day
1,2,4-Trichlorobenzene
Hexachlorobenzene
7.70E-04
ug/l
1.93E-07
lbs/day
1,2-Dichloroethane
9.90E+01
ug/l
2.48E-02
lbs/day
1,1,1-Trichloroethane
Hexachloroethane
8.90E+00
ug/l

2.23E-03
lbs/day
1,1-Dichloroethane
1,1,2-Trichloroethane
4.20E+01
ug/l
1.05E-02
lbs/day
1,1,2,2-Tetrachloroethane
1.10E+01
ug/l
2.75E-03
lbs/day
Chloroethane
Bis(2-chloroethyl)ether
1.40E+00
ug/l
3.50E-04
lbs/day
2-Chloroethylvinylether
2-Chloronaphthalene
4.30E+03
ug/l
1.08E+00
lbs/day
2,4,6-Trichlorophenol
6.50E+00
ug/l
1.63E-03
lbs/day
p-Chloro-m-cresol
Chloroform(HM)
4.70E+02
ug/l
1.18E-01
lbs/day
2-Chlorophenol
4.00E+02
ug/l
1.00E-01
lbs/day
1,2-Dichlorobenzene
1.70E+04
ug/l
4.25E+00
lbs/day
1,3-Dichlorobenzene
2.60E+03
ug/l
6.50E-01
lbs/day
1,4-Dichlorobenzene
2.60E+03
ug/l
6.50E-01
lbs/day
3,3'-Dichlorobenzidine
7.70E-02
ug/l
1.93E-05

lbs/day1,1-Dichloroethylene
1,2-trans-Dichloroethylene1
2,4-Dichlorophenol
1,2-Dichloropropane
1,3-Dichloropropylene
2,4-Dimethylphenol
2,4-Dinitrotoluene
2,6-Dinitrotoluene
1,2-Diphenylhydrazine
Ethylbenzene
Fluoranthene
4-Chlorophenylphenylether
4-Bromophenylphenylether
Bis(2-chloroisopropyl)ether
Bis(2-chloroethoxy)methane
Methylenechloride(HM)
Methylchloride(HM)
Methylbromide(HM)
Bromoform(HM)
Dichlorobromomethane(HM)
Chlorodibromomethane(HM)
Hexachlorocyclopentadiene
Isophorone
Naphthalene
Nitrobenzene
2-Nitrophenol
4-Nitrophenol
2,4-Dinitrophenol
4,6-Dinitro-o-cresol
N-Nitrosodimethylamine
N-Nitrosodiphenylamine
N-Nitrosodi-n-propylamine
Pentachlorophenol
Phenol
Bis(2-ethylhexyl)phthalate
Butylbenzylphthalate
Di-n-butylphthalate
Di-n-octylphthlate
Diethylphthalate
Dimethylphthlate
Benzo(a)anthracene(PAH)
Benzo(a)pyrene(PAH)
Benzo(b)fluoranthene(PAH)
Benzo(k)fluoranthene(PAH)
Chrysene(PAH)
Acenaphthylene(PAH)
Anthracene(PAH)
Dibenzo(a,h)anthracene(PAH)
Indeno(1,2,3-cd)pyrene(PAH)
Pyrene(PAH)
Tetrachloroethylene
Toluene
Trichloroethylene
Vinylchloride3.20E+00
ug/l
8.00E-04
lbs/day
7.90E+02
ug/l
1.98E-01

lbs/day
3.90E+01
ug/l
9.76E-03
lbs/day
1.70E+03
ug/l
4.25E-01
lbs/day
2.30E+03
ug/l
5.75E-01
lbs/day
9.10E+00
ug/l
2.28E-03
lbs/day
5.40E-01
ug/l
1.35E-04
lbs/day
2.90E+04
ug/l
7.25E+00
lbs/day
3.70E+02
ug/l
9.26E-02
lbs/day
1.70E+05
ug/l
4.25E+01
lbs/day
1.60E+03
ug/l
4.00E-01
lbs/day
3.60E+02
ug/l
9.01E-02
lbs/day
2.20E+01
ug/l
5.50E-03
lbs/day
3.40E+01
ug/l
8.51E-03
lbs/day
1.70E+04
ug/l
4.25E+00
lbs/day
6.00E+02
ug/l
1.50E-01
lbs/day
1.90E+03
ug/l
4.75E-01

lbs/day
1.40E+04
ug/l
3.50E+00
lbs/day
7.65E+02
ug/l
1.91E-01
lbs/day
8.10E+00
ug/l
2.03E-03
lbs/day
1.60E+01
ug/l
4.00E-03
lbs/day
1.40E+00
ug/l
3.50E-04
lbs/day
8.20E+00
ug/l
2.05E-03
lbs/day
4.60E+06
ug/l
1.15E+03
lbs/day
5.90E+00
ug/l
1.48E-03
lbs/day
5.20E+03
ug/l
1.30E+00
lbs/day
1.20E+04
ug/l
3.00E+00
lbs/day
1.20E+05
ug/l
3.00E+01
lbs/day
2.90E+06
ug/l
7.25E+02
lbs/day
3.10E-02
ug/l
7.75E-06
lbs/day
3.10E-02
ug/l
7.75E-06
lbs/day
3.10E-02
ug/l
7.75E-06

lbs/day
3.10E-02
ug/l
7.75E-06
lbs/day
3.10E-02
ug/l
7.75E-06
lbs/day
3.10E-02
ug/l
7.75E-06
lbs/day
3.10E-02
ug/l
7.75E-06
lbs/day
1.10E+04
ug/l
2.75E+00
lbs/day
8.90E+00
ug/l
2.23E-03
lbs/day
2.00E+05
ug/l
5.00E+01
lbs/day
8.10E+01
ug/l
2.03E-02
lbs/day
5.25E+02
ug/l
1.31E-01
lbs/day
Pesticides
Aldrin
Dieldrin
Chlordane
4,4'-DDT
4,4'-DDE
4,4'-DDD
alpha-Endosulfan
beta-Endosulfan
Endosulfansulfate
Endrin
Endrinaldehyde
Heptachlor
Heptachlorepoxide
1.40E-04
ug/l
3.50E-08
lbs/day
1.40E-04
ug/l
3.50E-08
lbs/day
5.90E-04

ug/l
1.48E-07
lbs/day
5.90E-04
ug/l
1.48E-07
lbs/day
5.90E-04
ug/l
1.48E-07
lbs/day
8.40E-04
ug/l
2.10E-07
lbs/day
2.00E+00
ug/l
5.00E-04
lbs/day
2.00E+00
ug/l
5.00E-04
lbs/day
2.00E+00
ug/l
5.00E-04
lbs/day
8.10E-01
ug/l
2.03E-04
lbs/day
8.10E-01
ug/l
2.03E-04
lbs/day
2.10E-04
ug/l
5.25E-08
lbs/day
4.50E-05
ug/l
1.13E-08
lbs/day
4.50E-05
ug/l
1.13E-08
lbs/day
4.50E-05
ug/l
1.13E-08
lbs/day
4.50E-05
ug/l
1.13E-08
lbs/day
4.50E-05
ug/l
1.13E-08
lbs/day
4.50E-05

ug/l
1.13E-08
lbs/day
4.50E-05
ug/l
1.13E-08
lbs/day
7.50E-04
ug/l
1.88E-07
lbs/day
ug/l
lbs/day
ug/l
lbs/day
ug/l
lbs/day
ug/l
lbs/day
ug/l
lbs/day
ug/l
lbs/day
ug/l
lbs/day
ug/l
lbs/day
1.40E-08
ug/l
3.50E-12
lbs/day
PCB's
PCB1242(Arochlor1242)
PCB-1254(Arochlor1254)
PCB-1221(Arochlor1221)
PCB-1232(Arochlor1232)
PCB-1248(Arochlor1248)
PCB-1260(Arochlor1260)
PCB-1016(Arochlor1016)
Pesticide
Toxaphene
Metals
Antimony
Arsenic
Asbestos
Beryllium
Cadmium
Chromium(III)
Chromium(VI)
Copper
Cyanide
Lead
Mercury
Nickel
Selenium
Silver
Thallium
Zinc
Dioxin
Dioxin(2,3,7,8-TCDD)

MetalsEffluentLimitationsforProtectionofAllBeneficialUses
BaseduponWaterQualityStandardsandToxicsRule
Aluminum
Antimony
Arsenic
Barium
Beryllium
Cadmium
Chromium(III)
Chromium(VI)
Copper
Cyanide
Iron
Lead
Mercury
Nickel
Selenium
Silver
Thallium
Zinc
Boron
Class 4AcuteAgricultural
Class 3AcuteAquatic
Wildlife
Acute ToxicsDrinkingWaterSource
AcuteToxicsWildlife
1C AcuteHealthCriteria
AcuteMostStringent
Class 3ChronicAquatic
Wildlife
ug/l
ug/l
ug/l
ug/l
ug/l
ug/l
ug/l
750.0
750.0
N/A
4300.1
4300.1
100.0
340.0
0.0
100.0
190.0
0.0
0.0
10.0
8.7
0.0
8.7
0.8
5611.8
0.0
5611.8
268.2
100.0
16.0

0.0
16.00
11.00
200.0
51.7
51.7
30.5
22.0
220004.7
22.0
5.2
1000.0215
1000.0
100.0
476.8
0.0
100.0
18.6
2.40
0.15
0.0
0.15
0.012
1515.9
4600.1
1515.9
168.5
50.0
20.0
0.0
20.0
4.6
41.1
0.0
41.1
6.3
6.3
387.8
387.8
387.8
750.0
750.0
SummaryEffluentLimitationsforMetals[WasteloadAllocation,TMDL]
[IfAcuteismorestringentthanChronic,thentheChronictakesontheAcutevalue.]
WLAChronic
ug/l
N/AWLAAcute
ug/l
750.0
4300.09
100.0
0.00E+00
Aluminum
Antimony
Arsenic
Asbestos
Barium
Beryllium
Cadmium
Chromium(III)

Chromium(VI)
Copper
Cyanide
Iron
Lead
Mercury
Nickel
Selenium
Silver
Thallium
Zinc
Boron
8.7
5611.8
16.0
51.7
22.0
1000.0
100.0
0.150
1515.9
20.0
41.1
6.3
387.8
750.02
190.0AcuteControls
0.8
268
11.0
30.5
5.2
18.6
0.012
169
4.6
N/A
387.8
OtherEffluentLimitationsarebaseduponR317-1.
E.coli
126.0
organismsper100mlAntidegradationConsiderations
TheUtahAntidegradationPolicyallowsfordegradationofexistingqualitywhereitisdetermined
thatsuchloweringofwaterqualityisnecessarytoaccommodateimportanteconomicorsocial
developmentintheareainwhichthewatersareprotected[R317-2-3].Ithasbeendeterminedthat
certainchemicalparametersintroducedbythisdischargewillcauseanincreaseoftheconcentrationof
saidparametersinthereceivingwaters.Undernoconditionswilltheincreaseinconcentrationbe
allowedtointerferewithexistinginstreamwateruses.
Theantidegradationrulesandproceduresallowformodificationofeffluentlimitslessthanthosebased
strictlyuponmassbalanceequationsutilizing100%oftheassimilativecapacityofthereceivingwater.
Additionalfactorsincludeconsiderationsfor"Blue-ribbon"fisheries,specialrecreationalareas,
threatenedandendangeredspecies,anddrinkingwatersources.
AnAntidegradationLevelIReviewwasconductedonthisdischargeanditseffectonthe
receivingwater.Baseduponthatreview,ithasbeendeterminedthatan
AntidegradationLevelIIReviewisnotrequiredColoradoRiverSalinityForumConsiderations
DischargesintheColoradoRiverBasinarerequiredtohavetheirdischargeataTDSloading
oflessthan1.00tons/dayunlesscertainexemptionsapply.RefertotheForum'sGuidelines
foradditionalinformationallowingforanexceedenceofthisvalue.
Thisdoesn’tapplytofacilitiesthatdonotdischargetotheColoradoRiverBasin.SummaryComments
Themathematicalmodelingandbestprofessionaljudgementindicatethatviolationsofreceiving

waterbeneficialuseswiththeirassociatedwaterqualitystandards,includingimportantdown-
streamsegments,willnotoccurfortheevaluatedparametersofconcernasdiscussedaboveifthe
effluentlimitationsindicatedabovearemet.NoticeofUPDESRequirement
ThisAddendumtotheStatementofBasisdoesnotauthorizeanyentityorpartytodischargetothe
watersoftheStateofUtah.ThatauthorityisgrantedthroughaUPDESpermitissuedbytheUtah
DivisionofWaterQuality.Thenumberspresentedheremaybechangedasafunctionofother
factors.DischargersarestronglyurgedtocontactthePermitsSectionforfurtherinformation.
Permitwritersmayutilizeotherinformationtoadjusttheselimitsand/ortodetermineotherlimits
baseduponbestavailabletechnologyandotherconsiderationsprovidedthatthevaluesinthis
wasteloadanalysis[TMDL]arenotcompromised.SeespecialprovisionsinUtahWaterQuality
StandardsforadjustmentsintheTotalDissolvedSolidsvaluesbaseduponbackgroundconcentration.
UtahDivisionof WaterQuality
SuzanTahir
801-536-4341
FileName:RimMine_WLA_4-29-2021
APPENDIX-CoefficientsandOtherModelInformation
CBOD
CBOD
CBOD
REAER.
REAER.
REAER.
NBOD
NBOD
Coeff.
Coeff.
Coeff.
Coeff.
Coeff.
Coeff.
Coeff.
Coeff.
(Kd)20
FORCED
(Ka)T
(Ka)20
FORCED
(Ka)T
(Kn)20
(Kn)T
1/day
(Kd)/day
1/day
(Ka)/day
1/day
1/day
1/day
1/day
2.000
0.000
0.798
110455.660
0.000
68737.052
0.400
0.086
Open
Open
NH3
NH3

NO2+NO3
NO2+NO3
TRC
TRC
Coeff.
Coeff.
LOSS
LOSS
Decay
(K4)20
(K4)T
(K5)20
(K5)T
(K6)20
(K6)T
K(Cl)20
K(Cl)(T)
1/day
1/day
1/day
1/day
1/day
1/day
1/day
1/day
0.000
0.000
4.000
1.596
0.000
0.000
32.000
9.978
BENTHIC
BENTHIC
DEMAND
DEMAND
(SOD)20
(SOD)T
gm/m2/day
gm/m2/day
1.000
0.284
K1
K2
K3
K4
K5
K6
K(Cl)
S
CBOD
Reaer.
NH3
Open
NH3Loss
NO2+3
TRC
Benthic
{theta}

{theta}
{theta}
{theta}
{theta}
{theta}
{theta}
{theta}
1.0
1.0
1.1
1.0
1.0
1.0
1.1
1.1
DWQ-2021-008502
ATTACHMENT4
ReasonablePotentialAnalysis
ThisPageIntentionallyLeftBlank
REASONABLEPOTENTIALANALYSIS
Water Quality has worked to improve our reasonable potential analysis (RP) for the inclusion of limits forparameters in the permit by using an EPA provided model. As a result of the
model, more parameters may beincludedintherenewalpermit.ACopyoftheReasonablePotentialAnalysisGuidance(RPGuide)isavailableat waterQuality.There arefouroutcomes forthe RPAnalysis1. Theyare;OutcomeA:Aneweffluentlimitation
willbeplacedin thepermit.OutcomeB:Noneweffluentlimitation.Routinemonitoringrequirementswillbeplacedorincreasedfromwhattheyare inthe permit,OutcomeC:No new effluent limitation.Routine
monitoring requirements maintained as they arein the permit,OutcomeD:No limitationorroutine monitoringrequirementsareinthepermit.
RPforthis permit was notconductedduetolackof facilityeffluent data.
1SeeReasonablePotential AnalysisGuidancefordefinitionsofterms