PART3­REGIONALANDDISTRICTRULES»ChapterH:Auckland­widerules»4Naturalresources»

4.16WastewaternetworkmanagementIntroduction

Thefollowingprovisionsapplytothemanagementofpublicandprivatewastewaternetworks.Theserulesdonotaddresson­sitedischargesofwastewaterfromindividualtreatmentsystems,ordischargesofwastewaterdirectlytotheCMA,bothofwhicharecoveredAuckland­wide­On­sitewastewaterrulesandtheGeneralCoastalMarinezonerules.

Resourceconsentapplicationsgrantedundertherulesofthispartarepursuanttos.15oftheRMA.

1.Activitytable

[rp]

Thefollowingtablespecifiestheactivitystatusofdischargesfrompublicandprivatewastewaternetworksviaeitherplannedorunplanneddischargesofcontaminantstolandand/orwater.

Activity / Activitystatus
Dischargeofuntreatedwastewateroverflowsfromawastewaternetworkservicingnew
developmentareasandnewwastewaternetworkswithinexistingurbanareas / P
Dischargeofwastewaterfromwastewaternetworksbywayofexfiltration / P
Dischargeofuntreatedwastewateroverflowsfromawastewaternetworkservicingnewdevelopmentareasandnewwastewaternetworkswithinexistingurbanareaswherethe
dischargedoesnotcomplywiththepermittedactivitycontrols / C
Dischargeofuntreatedwastewateroverflowsfromanexistingseparatedwastewaternetwork
servicingexistingurbanareas / C
Dischargeofuntreatedwastewateroverflowsfromanexistingcombinedsewernetwork / RD
Dischargeoftreatedwastewaterfromawastewatertreatmentplant / D
Dischargeofwastewaterfromaprivatewastewaternetwork / D
Anyotherdischargeofwastewaterfromanetworkthatdoesnotcomplywiththepermitted,
controlledorrestricteddiscretionaryactivitycontrols / NC

2.Controls

2.1Permittedactivities

Apermittedactivitythatdoesnotcomplywiththecontrolsbelowisadiscretionaryactivityunlessotherwisespecified.

2.1.1Dischargeofwastewaterfromapublicwastewaternetworkservicingnewdevelopmentareasandnewwastewater networkswithinexistingurbanareas

1.Thenetworkmustbedesignedandconstructedsothat:

a.capacityisprovidedforatleastfivetimestheaveragedryweatherflowfromthemaximumprobabledevelopmentoftheservicednetworkareaatthetimethenetworkisconstructed

b.allpumpstationsmustbedesignedforaminimumoffourhoursstorage,inthepumpstationorthenetwork

c.allpumpstationsmustbecontinuouslymonitoredbytelemetrysothatthewastewaternetworkoperatorisimmediatelyinformedofanypumpstationfailureorfaultthatmayresultinanoverflow.

2.Thenetworkmustbedesignedandoperatedtopreventdryweatheroverflowsduringnormaloperation

ofthenetwork,andthenetworkoperatorhasanoperationalandmaintenanceprogrammeinplacethatminimisesunforeseendryweatheroverflowstotheenvironment.

3.Awastewaternetworkoperationsplanmustbeprepared,andimplemented,whichprovides:

a.adescriptionofthenetwork

b.maintenanceproceduresandlevelsofserviceforkeyelementsofthenetwork

c.operationsproceduresincludingresponsetosystemfailures,andoverflowevents.

d.monitoringandreportingprocedures.

4.Engineeredoverflowpointsmustbedesignedandlocatedsothatanydischargesfromthemgenerateaminimumofnuisance,damage,publichealthriskandecologicaleffectsandmustnotcausescouringanderosionatthepointofdischarge.

2.1.2Dischargeofwastewaterfrompublicwastewaternetworksbywayofexfiltration

1.Thedischargemustnotrenderanypotablewatersourceunsuitableforhumanconsumption,asdefinedintheNewZealandDrinkingWaterStandards1995.

2.Thenetworkutilityoperatormusthaveaprogrammeinplacetodeterminethegeneralextentofexfiltrationwithinthenetworkandidentifyareasofproportionallyhighexfiltration.

3.Thenetworkutilityoperatormustimplementanoperationsandmaintenanceprogrammeaimedattheprogressivereduction,wherepracticable,ofwastewaterexfiltration.

2.2Controlledactivities

2.2.1Dischargeofwastewaterfromawastewaternetworkservicingnewdevelopmentareas andnewwastewaternetworkswithinexistingurbanareas

1.Thenetworkmustbedesignedandoperatedsoitdoesnotoverflowotherthaninemergencyoverflowsituations.

2.2.2Dischargeofwastewaterfromexistingpublicseparatedwastewaternetworksservicingurbanareas

1.Aprogrammemustbeinplacetoreducenetworkoverflowstoanaverageofnomorethantwoeventsperdischargelocationperannumby2040.

2.Emergencyoverflowpointsmustbedesignedandlocatedsothatanydischargesgenerateaminimumofnuisance,damage,publichealthrisk,andecologicaleffectsanddonotcausescouringanderosionatthepointofdischarge.

3.Awastewaternetworkoperationsplanmustbeprepared,andimplemented,whichprovides:

a.adescriptionofthewastewaternetwork

b.maintenanceproceduresandlevelsofserviceforkeyelementsofthenetwork

c.operationsproceduresincludingresponsetosystemfailures,incidentsandsignificantoverflowevents

d.monitoringandreportingprocedures.

4.Allpumpstationsmustbecontinuouslymonitoredbytelemetrysothatthewastewaternetworkoperatorisimmediatelyinformedofanypumpstationfailureorfaultthatmayresultinanoverflow.

5.Thewastewatercollectionnetworkmustbedesignedandoperatedtopreventdryweatheroverflowsduringnormaloperationofthenetwork,andthenetworkoperatorhasanoperationalandmaintenanceprogrammeinplacethatminimisesunforeseendryweatheroverflowstotheenvironment.

2.3Restricteddiscretionaryactivities

2.3.1Dischargeofwastewaterfromacombinedsewernetwork

1.Awastewaternetworkoperationsplanmustbeprepared,andimplemented,whichprovides:

a.adescriptionofthewastewaternetwork

b.maintenanceproceduresandlevelsofserviceforkeyelementsofthenetwork

c.operationsproceduresincludingresponsetosystemfailuresandsignificantoverflowevents

d.monitoringandreportingprocedures.

2.Allpumpstationsmustbecontinuouslymonitoredbytelemetrysothatthewastewaternetworkoperatorisimmediatelyinformedofanypumpstationfailureorfaultthatmayresultinanoverflow.

3.Thenetworkoperatormusthaveanoperationalandmaintenanceprogrammeinplacethatminimisesunforeseendryweatheroverflowstotheenvironment.

3.Assessment­Controlledactivities

3.1Mattersofcontrol

Councilwillrestrictitscontroltothefollowingmatterswhenassessingcontrolledactivityresourceconsentapplications.

1.Thedischargeofwastewaterfromawastewaternetworkservicingnewdevelopmentareasandnewwastewaternetworkswithinexistingurbanareas

a.themanagementofthewastewaterdischargeandthemitigationofanyadverseeffectsassociatedwiththepermittedactivitycontrolsthatareunabletobemet

b.themitigationofpotentialadverseeffectsarisingfromwastewateroverflows,includingthoseonpotablewatersuppliesandpublichealth

c.associatedmonitoringandreporting

d.thedurationoftheconsentandthetimingandnatureofreviewsofconsentconditions.

2.Thedischargeofwastewaterfromapublicseparatedwastewaternetworkservicingexistingurbanareas

a.implementationoftheoverflowreductionprogramme

b.themitigationofanyadverseeffectsassociatedwiththedischarges,includingeffectsonpotablewatersuppliesandpublichealth

c.implementationofthewastewaternetworkoperationsplanandtheoperationalandmaintenanceprogramme

d.associatedmonitoringandreporting

e.thedurationoftheconsentandthetimingandnatureofreviewsofconsentconditions.

3.2Assessmentcriteria

1.Theextenttowhichtheoverflowreductionprogrammeandthenetworkoperationsplanandoperationalandmaintenanceprogramme:

a.arethebestpracticableoptionforpreventingorminimisingadverseeffects

b.adequatelyaddresswastewaterdischargesgeneratedasaresultofpotentialurbangrowth,urbanredevelopment,andlanduseintensificationwithinthecatchment,takingintoaccountthegrowthandintensificationprovisionsoftheUnitaryPlan

c.preventorminimiseadverseeffectsonpublichealth,potablewatersupplies,freshwaterand

coastalwaters

d.takeaccountofconsultationundertaken,includingengagementwithManaWhenua,onprioritiesandtimingofoverflowreductions.

2.Consultationundertakenonprioritiesandtimingofoverflowreductions.

4.Assessment­Restricteddiscretionaryactivities

4.1Mattersofdiscretion

1.Thedischargeofwastewaterfromacombinedsewernetwork

a.thebestpracticableoptionforpreventingorminimisingtheadverseeffectsofthewastewaterdischarges

b.theimplementationandongoingmaintenanceofmeasuresandworksnecessarytogiveeffecttothebestpracticableoption

c.implementationofthewastewaternetworkoperationsplanandtheoperationalandmaintenanceprogramme

d.associatedmonitoringandreporting

e.thedurationoftheconsentandthetimingandnatureofreviewsofconsentconditions.

4.2Assessmentcriteria

1.Thedischargeofwastewaterfromacombinedsewernetwork

2.TheextenttowhichtheproposedBPO

a.preventsorminimisesadverseeffectsparticularlyonpublichealth,safetyandamenity,potablewatersupplies,ManaWhenuavalues,freshwatersystemsandcoastalwaters;

b.providesforwastewaterdischargesgeneratedasaresultofpotentialurbangrowth,urbanredevelopment,andlanduseintensificationwithinthecatchment,takingintoaccountthegrowthandintensificationprovisionsoftheUnitaryPlan;

c.progressivelyreducesoverflowsandassociatedadverseeffects,andtheprioritiesandtimeframesfordoingso,havingparticularregardto:

i.

ii.iii.

areasofcontactrecreationandpublicuse

receivingenvironmentsthataresensitivetotheadverseeffectsofwastewateroverflowsareaswithhighManaWhenuavalues

d.takesaccountofconsultationwithkeystakeholders,includingManaWhenuaandthecommunity

e.considerspotentialimpactsonstormwatermanagement

3.Whethertheoperationsandmaintenanceplansandprogrammesprovidedwillensuretheeffectiveoperationofthecombinedsewernetworkandminimisedryweatherdischarges.

4.Whethertheresponseproceduresandprocessesprovidedwillmitigatetheadverseeffectsofoverflows.