Deep Panuke Project Description - Encana

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Table 2.8 Routine Project Emissions/EffluentsType Emission/Effluent Estimated Quantity Characteristics Disposal StandardDeck drainage As generated Possible oily water withsome particulate matterRoof drainage will be directed overboard. 1 Deck drainage will betreated to reduce its oil concentration to meet regulatory requirementsocean discharge. 1Bilge/ballast water(Construction/Support vessels)Hydrostatic test fluids(Pipeline commissioningwater)As required Water with hydrocarbons Bilge/ballast water will be treated as necessary to reduce its oilconcentration to 15 mg/L or less prior to ocean discharge. 147,240 m 3 (over several days)see Section 2.3.4 for moredetails.Seawater containingbiocide and corrosioninhibitorsThe discharge of hydrotest fluids will require pre-approval fromEnvironment Canada.Solid WasteAir EmissionsMiscellaneous solidwastes (transported toshore)Flaring (acid gas duringroutine maintenance)Normal GeoturbineoperationsAs requiredConstruction materials,broken equipmentcomponents, packaging andshipping materials,damaged containers andgeneral debris and refuseassociated withconstructionProduction/OperationWastes will be sorted and disposed according to local regulatoryregime of the shore base, including the Nova Scotia Solid Waste-Resource Management Regulations and municipal requirements.Metals will be salvaged.refer to Table 8.3 H 2 S, SO 2 , NO x , CO 2 Atmospheric emissions will comply with the Air Quality Regulations(Nova Scotia Environment Act) and Ambient Air Quality Objectives(CEPA).refer to Table 8.3 SO 2 , NO x , CO 2 Atmospheric emissions will comply with the Air Quality Regulations(Nova Scotia Environment Act) and Ambient Air Quality ObjectivesProduced water refer to Table 2.6 Hydrocarbon, H 2 S in water(sour water)(CEPA).Produced water will be treated to a target dispersed oil concentration of25 mg/L (30-day weighted average). The OWTG specify a 30-dayweighted average of 30 mg/L. 1Liquid Effluentfor OceanDischargeCooling water 2,400 m 3 /h Chlorinated water;temperature 20EC aboveambient (before mixing incaisson)Deck drainage Pump capacity is 150 m 3 /h Rain and deluge water, maycontain oily water withsome particulatesMixed with produced water before discharge. Total residual freechlorine in cooling water will not normally exceed 0.25 ppm.Roof drainage flows directly overboard as permitted by CNSOPBguidelines. 1 Deck drainage will be treated to reduce hydrocarbons to
Table 2.8 Routine Project Emissions/EffluentsType Emission/Effluent Estimated Quantity Characteristics Disposal StandardBilge/ballast water As required Water with hydrocarbons Bilge/ballast water will be treated as necessary to reduce oilconcentration to 15 mg/L or less prior to ocean discharge. 1HazardousLiquids forOnshoreDisposalSolid WasteWell treatment fluids/Well completion andworkover fluidWater for fire controlsystemsAs requiredWell completion fluidshave similar properties toWBMFluids will be treated to an oil concentration of 40 mg/L or less prior todischarge. 1As required Excess deck drainage water Discharged overboard without treatment. 1Desalination brine 13 m 3 /hr Estimated salinity of 35-40pptWaste production fluids As requiredand by-productsMiscellaneous solidwaste (transported toshore)Miscellaneous solidwaste (transported toshore)As requiredAs requiredWaste residues in theproduction systemincluding oily sludge, scale,filters and filter residuesand chemical wastesDomestic solid waste andnon-hazardous solids suchas packing materialDomestic solid waste andnon-hazardous solids suchas packing materialDischarged overboard without treatment. 1Hazardous wastes will be accumulated in suitable containers andplaced in appropriate shipping containers for return to shore fordisposal and collected by licenced waste haulers. Provincial regulationsfor the storage, disposal, transport and management of used oilproducts will be followed as well as the Transportation of DangerousGoods Act as applicable.Wastes will be sorted and disposed according to local regulatoryregime of the shorebase, including the Nova Scotia Solid Waste-Resource Management Regulations and other municipal requirements.Wastes will be sorted and disposed according to local regulatoryregime of the shorebase, including the Nova Scotia Solid Waste-Resource Management Regulations and other municipal requirements.Deep Panuke Volume 4 (Environmental Assessment Report)• November 2006 2-49
Page 1 and 2: 2 PROJECT DESCRIPTIONThis section p
Page 3 and 4: Potential Radioactive Components: T
Page 5 and 6: 2.2.2 Subsea Wells and FlowlinesThe
Page 10 and 11: 2.2.3.1 M&NP OptionThe proposed pip
Page 12 and 13: The onshore portion of the pipeline
Page 14 and 15: 2.3 Construction and Installation2.
Page 16 and 17: 2.3.2 Export PipelineA proposed pip
Page 18 and 19: A dedicated subsea umbilical will b
Page 20 and 21: Table 2.2 Construction MethodsCateg
Page 22 and 23: These subsea structures may be fast
Page 24 and 25: For the new production and injectio
Page 26 and 27: Figure 2.8Typical Production Well S
Page 28 and 29: 2.3.8.1 Drilling Fluid ProgramWater
Page 30 and 31: Table 2.4 Hydrostatic Fluid Dischar
Page 32 and 33: Acid GasInjectionFeed GasCompressio
Page 34 and 35: Although the M&NP Option is the onl
Page 36 and 37: Spent TEG has no measurable H 2 S a
Page 38 and 39: Table 2.7 Water CompositionComponen
Page 40 and 41: 2.4.2 Utilities2.4.2.1 Electrical P
Page 42 and 43: will be designed considering emerge
Page 44 and 45: zones over the pipeline although th
Page 46 and 47: 2.7 Emissions and DischargesEnCana
Page 50 and 51: 2.7.1.1 Air PollutantsThe following
Page 52 and 53: esult in eye irritation, respirator
Page 54 and 55: Typically, a re-entry and completio
Page 56 and 57: 2.7.5.3 Deck DrainageDuring constru
Page 58 and 59: 2.9.2 Pipeline Leak PreventionThe p
Page 60 and 61: 2.9.5 Subsea Protection StructuresT
Page 62 and 63: • consider concept alternatives f
Page 64 and 65: Table 2.10Centre Substructure Type
Page 66 and 67: is much more weather-dependent than
Page 68 and 69: Table 2.11 Processing Location Alte
Page 70 and 71: After carefully considering the con
Page 72 and 73: Flaring acid gas consists of direct
Page 74 and 75: Table 2.13Produced Water Disposal A
Page 76 and 77: Therefore, injection into an annula
Page 78 and 79: Use of a dedicated condensate pipel
Page 80 and 81: is taken offshore on a special lay
Page 82: Table 2.15Acid Gas Injection Locati

Deep Panuke Project Description - Encana

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