ICS27.140NB

P59

ENERGYSECTORSTANDARD

OFTHEPEOPLE’SREPUBLICOFCHINA

中華人民共和國能源行業(yè)標(biāo)準(zhǔn)

PNB/T10347-2019

ReplacedSDJ302-88

CodeforEnvironmentalImpactAssessment

ofHydropowerProjects

水電工程環(huán)境影響評價規(guī)范

IssuedonDecember30,2019ImplementedonJuly1,2020

IssuedbyNationalEnergyAdministrationofthePeople’sRepublicofChina

Introduction

ThisEnglishversionisoneofChina’senergysectorstandardseriesinEnglish.Itstranslationwas

organizedbyChinaRenewableEnergyEngineeringInstituteauthorizedbyNationalEnergy

AdministrationofthePeople’sRepublicofChinaincompliancewithrelevantproceduresand

stipulations.ThisEnglishversionwasissuedbyNationalEnergyAdministrationofthePeople’s

RepublicofChinainAnnouncement[20xx]No.xdatedxx,20xx.

ThisversionwastranslatedfromtheChineseStandardNB/T10347-2019,CodeforEnvironmental

ImpactAssessmentofHydropowerProjects,publishedbyChinaWater&PowerPress.Thecopyright

isreservedbyNationalEnergyAdministrationofthePeople’sRepublicofChina.Intheeventofany

discrepancyintheimplementation,theChineseversionshallprevail.

Manythanksgotothestafffromrelevantstandarddevelopmentorganizationsandthosewhohave

providedgenerousassistanceinthetranslationandreviewprocess.

ForfurtherimprovementoftheEnglishversion,allcommentsandsuggestionsarewelcomeand

shouldbeaddressedto:

ChinaRenewableEnergyEngineeringInstitute

No.2Beixiaojie,Liupukang,XichengDistrict,Beijing100120,China

Website:

Translatingorganizations:

ChinaRenewableEnergyEngineeringInstitute

POWERCHINAChengduEngineeringCorporationLimited

Translatingstaff:

WANGTianyeGONGChufengWANGXuanru

LIUYuanHETaoWEIFan

Reviewpanelmembers:

NationalEnergyAdministrationofthePeople’sRepublicofChina

AnnouncementofNationalEnergyAdministration

ofthePeople’sRepublicofChina

[2019]No.8

NationalEnergyAdministrationhasapproved152energysectorstandards(seeAttachment1)

includingtheCodeforOperatingandOverhaulingofExcitationSystemofSmallHydropowerUnits

andtheEnglishversionsof39energysectorstandards(seeAttachment2)includingtheCodeforSafe

andCivilizedConstructionofOnshoreWindPowerProjects,andtheyareherebyissued.

Attachments:1.DirectoryofSectorStandards

2.DirectoryofEnglishVersionsofSectorStandards

NationalEnergyAdministrationofthePeople’sRepublicofChina

December30,2019

Attachment:

DirectoryofSectorStandards

Adopted

SerialReplacedApprovalImplementation

StandardNo.Titleinternational

NumberstandardNo.datedate

standardNo.

…

CodeforEnvironmental

NB/T

24ImpactAssessmentofSDJ302-882019-12-302020-07-01

10347-2019

HydropowerProjects

…

Foreword

AccordingtotherequirementsofDocumentGNKJ[2012]No.326issuedbyNationalEnergy

AdministrationofthePeople’sRepublicofChina,“NoticeonReleasingtheDevelopmentand

RevisionPlanoftheSecondBatchofEnergySectorStandardsin2012”,andinaccordancewiththe

requirementsoftheenvironmentalprotectionlawsandregulationsandcurrenttechnicalstandardsfor

environmentalimpactassessment,andafterextensiveinvestigationandresearch,summarizationof

practicalexperience,consultationofrelevantnationalandsectorstandards,andwidesolicitationof

opinions,thedraftinggrouphaspreparedthiscode.

Themaintechnicalcontentsofthiscodeinclude:assessmentclassificationandrange,project

investigation,engineeringanalysisandenvironmentalimpactsidentification,currentenvironmental

statusinvestigationandassessment,environmentalimpactpredictionandassessment,environmental

protectionmeasuresandtechno-economicverification,environmentalriskassessmentandrisk

management,environmentalmonitoringplans,environmentalmanagementandsupervisionplans,

environmentalprotectioncostestimateandcost-benefitanalysis,andcomprehensiveassessment.

Themaintechnicalcontentsofthiscoderevisionareasfollows:

——Transformedthemandatoryclauses1.0.1,1.0.5and2.0.5oftheoriginalcodeintorecommended

clauses;

——AddedtermsandassessmentclassificationandRange;

——Addedprojectinvestigation,engineeringanalysis,environmentalprotectionmeasuresand

techno-economicverification,environmentalriskassessmentandriskmanagement,environmental

monitoringplans,environmentalmanagementandsupervisionplans,environmentalprotectioncost

estimateandcost-benefitanalysis,etc.

——AddedAppendixesB~HandAppendixJ.

——DeletedtheoriginalAppendixICompilationFormatsandRequirementsforEnvironmental

ImpactAssessmentOutlineforWaterConservancyandHydropowerProjectsandtheoriginal

AppendixIIIPreparationFormatsandFillingInstructionsforEnvironmentalImpactAssessment

ReportsforWaterConservancyandHydropowerProjects.

——RevisedtheoriginalGeneralProvisions,currentenvironmentalstatusinvestigationand

assessment,environmentalimpactpredictionandassessment,andcomprehensiveassessment;

——RevisedtheoriginalAppendixIIinto"AppendixAContentsofEnvironmentalImpactAssessment

ReportoftheHydropowerProject".

NationalEnergyAdministrationofthePeople’sRepublicofChinaisinchargeoftheadministrationof

thiscode.ChinaRenewableEnergyEngineeringInstitutehasproposedthiscodeandisresponsiblefor

itsroutinemanagement.EnergySectorStandardizationTechnicalCommitteeonHydropower

Planning,ResettlementandEnvironmentalProtectionisresponsiblefortheinterpretationofthe

specifictechnicalcontents.Commentsandsuggestionsintheimplementationofthiscodeshouldbe

addressedto:

ChinaRenewableEnergyEngineeringInstitute

No.2Beixiaojie,Liupukang,XichengDistrict,Beijing100120,China

Chiefdevelopmentorganizations:

ChinaRenewableEnergyEngineeringInstitute

POWERCHINAChengduEngineeringCorporationLimited

Participatingdevelopmentorganizations:

POWERCHINANorthwestEngineeringCorporationLimited

POWERCHINAZhongnanEngineeringCorporationLimited

POWERCHINAGuiyangEngineeringCorporationLimited

Chiefdraftingstaff:

YUWeiqiLIUYuanLIYanongSUNDadong

JIANGHongJIANGHaoWEIFanHETao

YANGJiuxianLANGJianLUBoTANPing

YANJianboKOUXiaomeiQIUXingchunLIMin

SUNDandanTONGXiaoshuangZHANGleiWANGChao

WANGWeiyingCHENFanNIULeYANGWenzheng

SUNYingLONGXuezhenZHAOZaixingLIURui

WANGSungaoXIAHaoZHAIHongjuanZHANGYong

JULin

Reviewpanelmembers:

GUHongbinWANWengongCHANGZhongnongCHENKaiqi

XUELianfangCHENGuozhuRUIJianliangCUILei

LIANYuCHENYongbaiCEHNYuyingLIUQing

LIYingxiWEIBingJINYiZHANGRong

CHUKaifengSHIJiayueTANGZhongboCHENXueqiang

QIAOYePULingLIShisheng

Contents

1GeneralProvisions1

2Terms3

3AssessmentClassificationandRange4

3.1GeneralRequirements4

3.2HydrologicalRegime4

3.3WaterTemperature5

3.4SurfaceWaterQuality5

3.5GroundwaterEnvironment6

3.6AquaticEcosystem6

3.7TerrestrialEcosystem7

3.8AtmosphericEnvironment8

3.9AcousticalEnvironment8

4ProjectInvestigation9

4.1PlanningOverview9

4.2ProjectOverview9

5EngineeringAnalysisandEnvironmentalImpactsIdentification11

5.1GeneralRequirements11

5.2EngineeringAnalysis11

5.3AnalysisofEnvironmentalImpactFactors12

5.4EnvironmentalImpactIdentificationandAssessmentFactorScreening12

5.5ComprehensiveAnalysis12

6InvestigationandAssessmentofEnvironmentalStatus14

6.1GeneralRequirements14

6.2ClimateandMeteorology14

6.3HydrologicalRegime15

6.4WaterTemperature16

6.5SurfaceWaterQuality17

6.6GroundwaterEnvironment18

6.7AquaticEcosystem19

6.8TerrestrialEcosystem21

6.9AtmosphericEnvironment22

6.10AcousticalEnvironment23

6.11SolidWaste23

6.12PublicHealth23

6.13Landscape24

6.14EnvironmentalStatusofResettlementAreas24

6.15ComprehensiveAssessmentofEnvironmentalStatus25

7EnvironmentalImpactForecastingandAssessment26

7.1GeneralRequirements26

7.2ClimateImpacts26

7.3HydrologicalRegimeImpacts26

7.4WaterTemperatureImpacts28

7.5SurfaceWaterQualityImpacts29

7.6GroundwaterEnvironmentalimpacts31

7.7AquaticEcosystemImpacts31

7.8TerrestrialEcosystemImpacts32

7.9PublicHealthImpacts33

7.10LandscapeImpacts33

7.11EnvironmentalImpactsofResettlementActivities33

7.12EnvironmentalImpactsofHydropowerComplexConstruct34

7.13ComprehensiveAnalysisofEnvironmentalImpacts36

8EnvironmentalProtectionMeasuresandTechno-EconomicVerification37

8.1GeneralRequirements37

8.2EcologicalOperatingSchemes37

8.3EcologicalFlowDischargingMeasures37

8.4WaterTemperatureRecovery38

8.5ReservoirWaterQualityProtection38

8.6GroundwaterEnvironmentalProtection39

8.7AquaticEcosystemProtection39

8.8TerrestrialEcosystemProtection40

8.9PublicHealthProtection41

8.10LandscapePlanning41

8.11ResettlementEnvironmentalprotectionMeasures41

8.12ConstructionEnvironmentalprotectionMeasuresforHydropowerProject42

8.13EnvironmentalScientificResearchPlanforEnvironmentalProtection44

8.14ComprehensiveAnalysisofEnvironmentalProtectionEffects44

9EnvironmentalRiskAssessmentandRiskManagement45

9.1GeneralRequirements45

9.2IdentificationofEnvironmentalRisks45

9.3EnvironmentalRiskAnalysisandAssessment46

9.4EnvironmentalRiskManagement47

10PlanningforEnvironmentalMonitoring48

10.1GeneralRequirements48

10.2EnvironmentalMonitoringforConstructionofHydropowerComplex48

10.3EnvironmentalMonitoringforOperatingofHydropowerComplex51

10.4EnvironmentalMonitoringPlansofResettlementActivities59

11PlanningforEnvironmentalManagementandSupervision61

11.1PlanningforEnvironmentalManagement61

11.2PlanningforEnvironmentalSupervision61

11.3Planningof"Three-simultaneous(SimultaneousDesign,ConstructionandOperation)"Managementfor

EnvironmentalProtection61

12EnvironmentalProtectionInvestmentEstimateandCost-benefitAnalysisofEnvironmentalImpact62

12.1CompositionofCost62

12.2MethodofInvestmentEstimate62

12.3Cost-benefitAnalysisunderEnvironmentalImpact63

13ComprehensiveAssessment65

AppendixAContentsofEnvironmentalImpactStatementofHydropowerProject59

AppendixBTableofMajorCharacteristicsofHydropowerProject62

AppendixCPollutionSourceIntensityAccountingforHydropowerProject66

AppendixDMatrixofScreeningforEnvironmentalImpactIdentificationandAssessmentFactorsfor..

HydropowerProject69

AppendixETableofAnalysisandCalculationResultsofRunoff74

AppendixFMethodofAssessmentforSurfaceWaterStatus75

AppendixGMethodofHydrologicalRegimeImpactForecasting77

AppendixHTableofHydrologicalRegimeForecastingResults78

AppendixJMethodofAcousticalEnvironmentalimpactForecasting82

ExplanationofWordinginThisCode84

ListofQuotedStandards85

1GeneralProvisions

1.0.1Thecodeisformulatedinordertostandardizetheworkcontentsandmethodsandtounifythe

technicalrequirementsforenvironmentalimpactassessmentofhydropowerprojects.

1.0.2Thecodeisapplicabletotheenvironmentalimpactassessmentofnew,re-constructedand

expandedhydropowerprojects.

1.0.3Theenvironmentalimpactassessmentofsmallhydropowerprojectscanbesimplifiedaccording

tothecode.

1.0.4Theenvironmentalimpactassessmentofhydropowerprojectsshallcarryoutthepolicyoftaking

allfactorsintoconsideration,adjustingmeasurestolocalconditionsandefficiency,conformtothe

environmentalprotectionlaws,regulationsandpolicies,aswellastheoverallrequirementsof

environmentalimpactassessmentofriverhydropowerplanning,followtheprinciplesofobjectivity,

impartiality,scientificity,rationalityandemphasis,andfullycoordinatetherelationshipbetween

hydropowerdevelopmentandecologicalenvironmentalprotection.

1.0.5Theenvironmentalimpactassessmentofhydropowerprojectsshallfocusonthelong-term,

cumulativeandregionalimpactsoftheprojectsonhydrology,watertemperature,surfacewaterquality,

aquaticecosystem,terrestrialecosystem,etc.,andtheimpactsonenvironmentalsensitivetargets.

Monographicstudiesshallbeconductedonanypossiblesignificantenvironmentalimpacts,andmajor

environmentalconstraints.

1.0.6Theenvironmentalimpactassessmentofhydropowerprojectsshallcomplywiththecurrent

sectorstandardHJ2.1,TechnicalGuidelineforEnvironmentalImpactAssessmentofConstruction

Project—GeneralProgrammeandHJ/T88,CodeforEnvironmentalImpactAssessmentofWater

ConservancyandHydropowerProject.Specifically,thecontentsandrequirementsofthe

environmentalimpactassessmentinclude:

1Collectingrelevantdata,andinvestigatingthecurrentenvironmentalstatusofthepossible

affectedareasoftheproject.

2Identifyingenvironmentalimpactfactors,definingenvironmentalprotectiontargetsand

screeningevaluationfactors.

3Definingassessmentclassificationandrange.

4Performingenvironmentalrationalityanalysisoftheprojectgineeringscheme.

5Forecastingandassessingthepossibleenvironmentalimpactsoftherecommended

engineeringscheme.

6Proposingtheenvironmentalprotectionmeasuresandenvironmentalmonitoringplans,and

performingcost-benefitanalysisofenvironmentalimpacts.

7Drawingtheenvironmentalimpactassessmentconclusion,andpreparingenvironmental

impactassessmentstatement.Thecontentsoftheenvironmentalimpactassessment

1

statementofhydropowerprojectsshallbeinaccordancewithAppendixAofthiscode.

1.0.7Theenvironmentalimpactassessmentofre-constructedandexpandedprojectsshallforecastand

assessthepossiblecumulatedimpactsofre-constructionandexpansionontheenvironmentonthe

basisoftheretrospectiveassessmentoftheenvironmentalimpactsoftheoriginalprojects,and

proposethecontrolmeasuresfortheoriginalenvironmentalpollutionandecologicaldamagerelated

totheprojects.

Intheenvironmentalimpactassessmentofre-constructedandexpandedprojects,thepossible

cumulatedimpactsofre-constructionandexpansionontheenvironmentshallbeforecastedand

evaluatedonthebasisoftheretrospectiveassessmentoftheenvironmentalimpactoftheoriginal

projects,andthecountermeasurestocontroltheoriginalenvironmentalpollutionandecological

damagerelatedtotheprojectsshallbeputforward.

1.0.8Theimplementationofenvironmentalprotectionoftheprojectsthathavecompletedsuchworks

as"threesuppliesandoneleveling"worksshallbeinvestigated.Theinvestigationshallmainlycover:

designchangesofprojectschemesandtheenvironmentalrationality,theactualenvironmentalimpact

ofprojectconstruction,andtheimplementationandeffectivenessofthe"Three-Simultaneity"system

forenvironmentalprotectionmeasures.

1.0.9Inadditiontothiscode,theenvironmentalimpactassessmentofhydropowerprojectsshallalso

complywiththecurrentrelevantstandardsofChina.

2

2Terms

2.0.1environmentalimpactofhydropowerproject

environmentalimpactofconstruction,operation,andresettlementofhydropowercomplex,etc.,

includingdirectandindirectimpacts,positiveandnegativeimpacts,aswellasreversibleand

irreversibleimpacts.

2.0.2environmentalsensitivetarget

variousnaturalandculturalpreservationsites,ecologicalsensitiveareas,areasofsocialconcern,

protectedspeciesandtheirimportanthabitats,intakes,centralresidentialareas,etc.

2.0.3environmentalprotectionobjective

environmentalquality,ecologicalfunctions,protectionrequirementsforenvironmentalsensitive

targetsandotherrequirementsrelatedtoenvironmentalprotectionthatshallbemaintainedduringthe

constructionandoperationofhydropowerprojects.

2.0.4cumulativeimpact

cumulationandconsequencesoftemporalandspatialimpactsonhydrologicalregime,water

temperature,aquaticecosystem,etc.ofcombinedoperationofahydropowerprojectwithupstream

anddownstreamcascadestationsorreservoirs,waterdiversionprojects,etc.

2.0.5hydrologicalregime

temporospatialvariationandtrendofhydrologicalelementssuchasriverdischarge,flowvelocity,

waterlevelandsediment.

2.0.6waterreducedreach

thereachdownstreamofthedamsitewherethedischargereducesduetowaterdiversionandpower

generationinahydropowerproject,usuallybetweenthedamsiteandthetailwaterofthehydropower

project.

2.0.7localclimate

microregionalclimateinthereservoirareaofthehydropowerprojectaffectedbytheunderlying

surfaceandthechangeofwaterandheattransportconditions,withthecharacteristicelementsmainly

includingtemperatureandhumidity,etc.

2.0.8drawdownarea

areasalongthebankofthereservoirinundationareathatisexposedduetoperiodicfluctuationsinthe

operatingwaterlevelofthereservoir.

2.0.9ecologicaloperatingscheme

operationmodesofhydropowerprojectandreservoirinordertosuchasdischargeregulationand

sedimentregulationadoptedtomeettherequirementsofecologicalwaterdemand,environmental

waterdemand,estuarysalinitycontrol,sedimenttransportation,etc.,soastomaintaintheecological

environmentfunction,improvetheecologicalenvironmentqualityandexploittheecological

environmentbenefits.

3

3AssessmentClassificationandRange

3.1GeneralRequirements

3.1.1Inordertomakeenvironmentalimpactassessmentofhydropowerprojects,theassessmentshall

beclassifiedbyenvironmentalelementsaccordingtotheprojectcharacteristics,environmental

characteristicsoftheprojectareaandenvironmentalsensitivity,andtheinvestigationandassessment

shallbecarriedoutaccordingtothedepthrequirementsofthecorrespondingclass.

3.1.2Inordertomakeenvironmentalimpactassessmentofhydropowerprojects,theassessmentrange

ofeachenvironmentalelementshallbedeterminedaccordingtotheprojectcharacteristics,degreeof

impact,distributionofenvironmentalsensitivetargetsandthecoordinationamongtheimpactofeach

relevantenvironmentalelement.Themapsofassessmentrangeshallbedrawnwiththenational

standardcoordinatesystem.

3.2HydrologicalRegime

3.2.1HydrologicalregimeassessmentclassshallbedeterminedasperTable3.2.1accordingtothe

affectedriverscaleandthereservoirregulationperformance.

Table3.2.1DeterminationofHydrologicalRegimeAssessmentClass

Reservoirregulationperformance

AffectedriverscaleYearlyandaboveSeasonalWeeklyandbelow

regulationregulationregulation

LargeriverClassIClassIClassII

MediumriverClassIClassIIClassII

SmallriverClassIClassIIClassIII

Note:1Largerrivermeanstheriverwiththeaverageannualdischargeatthedamsitemorethanor

equalto150m3/s.

2Mediumrivermeanstheriverwiththeaverageannualdischargeatthedamsitemorethan

15m3/sbutlessthan150m3/s.

3Smallrivermeanstheriverwiththeaverageannualdischargeatthedamsitelessthanor

equalto15m3/s.

3.2.2Thehydrologicalregimeassessmentclassshallbeincreasedbyoneclassifthehydropower

projectisunderthefollowingcircumstances:

1Wherethewaterintheriverchannelisreducedduetodiversiontypeormixedtype

developmentofthehydropowerproject.

2Wheretherearereservoirsoftheyearlyandaboveregulationperformanceupstreamofthe

reservoirwithseasonalregulationperformance,resultingincumulatedimpactsonthe

hydrologicalregime.

4

3Wherethehydropowerprojectaffectsthetidalreachofalargeriver,andresultsinimpacts

ofsaltwaterintrusion.

4Wheretheassessedwaterareainvolvesenvironmentalsensitiveareas.

3.2.3Thehydrologicalregimeassessmentrangeshallincludethereachesofthemainstreamand

tributariesinthereservoirareaaffectedbytheproject,reachesdownstreamofthedam,andreaches

protectedasfishhabitats.Amongthem,theassessmentrangeofthereachesdownstreamofthedam

shallbedeterminedaccordingtothereservoirregulationperformance,convergingofdownstream

tributaries,constructionandoperationofhydropowerproject,anddistributionofenvironmental

sensitiveobjects.

3.3WaterTemperature

3.3.1WatertemperatureassessmentclassshallbedeterminedasperTable3.3.1accordingtothewater

temperaturesensitivityoftheaffectedriverandthereservoirwatertemperaturedistributionpattern.

Thereservoirwatertemperaturedistributionpatternshallbedeterminedaccordingtothecurrent

sectorstandardNB/T35094,CodeforWaterTemperatureCalculationofHydropowerProjects.

Table3.3.1DeterminationofWaterTemperatureAssessmentClass

RiverwatertemperatureReservoirwatertemperaturedistributionpattern

sensitivityStratifiedpatternTransitionpatternMixedpattern

SensitiveClassIClassIClassII

GeneralClassIClassIIClassIII

Note:1"Sensitive"meansthatthereareaquaticecologicalsensitiveareas,importantwetlands,

intakesofmedium-andlarge-scaleirrigationareas,andotherenvironmentalsensitive

objectsofspecialrequirementsforwatertemperature.

2"General"meansthesituationsexceptthoseincludedinthesensitivesituations.

3.3.2Watertemperatureassessmentrangeshallincludethereachesofthemainstreamandtributaries

inthereservoirarea,andthereachesdownstreamofthedam.Amongthem,theassessmentrangeof

thereachesdownstreamofthedamshallbedeterminedaccordingtothereservoirwatertemperature

distributionpattern,convergingofdownstreamtributaries,constructionandoperationofhydropower

project,anddistributionofwatertemperaturesensitiveobjects.

3.4SurfaceWaterQuality

3.4.1SurfacewaterqualityassessmentclassshallbedeterminedasperTable3.4.1accordingtothe

pollutionloadlevelofthereachesandthereservoirregulationperformance.

Table3.4.1DeterminationofSurfaceWaterQualityAssessmentClass

Reservoirregulationperformance

Pollutionloadlevelof

YearlyandaboveWeeklyand