TGPC: Greater Wellington letter to Chair, PCTG BOI - Attachment 2

*Literature review of Porirua Harbour and catchmentAppendix 2: Annotated Bibliographyconsiderations for EIA are sediment transport and hydrodynamics, the impact on floraand fauna, noise and aesthetic values. Prior to Marina, ebb and flood tide currents causesediments to be deposited in the locality of the marina, which the Maria Cruising Clubhas dredged since 1963. Brief description of main ebb and flood currents in POTiruaHarbour. A net gain in sediment deposited at the marina site is interpreted as equating tothe net loss of sediment from Ngatitoa Domain. The erosion of the beach at NgatitoaDomain (at a rate of 1.1m per year)is caused by the railway embankment interrupting thenatural sand circulation pattern by acting as a reflector, keeping sand in suspension andpreventing accumulation in front of the embankment. EIA states that the marina wouldamenorate this erosion as major dredging would cease and sand would be made moreavailable to local beaches. Lists fauna found at the site. All species found elsewhere inPOTirua Harbour are either absent or in few numbers at the marina site, most likely due topast dredging activities. Therefore impact on local fauna would be minimalSynergy (1987). Poriruu Sired11/1/00d 1,111igaiion. Eitvii'o11nieiiial I'llpact Assessiiient. Phase Iyepori. Sche, ?Ie opiions assessnieiii. Synergy Applied Research Ltd. for the Welling10n RegionalCouncilSummary of findings on POTirua Stream flooding problems. Focus on feasible means 10mitigate the impact of flooding, including assessment of design options. Proposal fordetention dams and considers cost, maintenance and access for aquatic speciesConcluded that detention darns at Belmont and SIGbbings had the least adverseenvironmental impact.TDG, BECA, Davy-RJ and Rivers-Buchan (1992). Parentala Roodiitg Op!ions. Unpublishedreport, held at GWRC library, prepared by Traffic Design Group Ltd. , Beca Carter Honings andFerner Ltd. , R. IDavy and Associates, Rivers Buchan Associates.Considers options for traffic congestion at Maria and Paremata. Covers communityconsultation, the planning environment, (routes, traffic, network options and designs),social impacts, structural assessment of the Paremata Bridge.RFA (1993). Enviroiti?Ieniul jiltpuci nssessi, Teiji of proposed uggi'egute exii'aciioit. ' KP and LPW/lane, Mumhys Road, POWn!ahuiiui. Unpublished report, Resource Planning AssociatesLand owners seeking a land use consent to extract aggregate from a 42ha area of their318ha farm at the top end of Murphys Road. Describes environmental effects of theproposed activityWRC (1989b). Land and cousin! jiltpuci assess, ,lent. Wellington Regional Council, Technicalreport N" 7.Supporting technical document to Environment Impact Report on future SHI route(WRC, 1989a), as part of the Greater Wellington Area Land Use and Transport StrategicReview (GATS). The report is in five parts, covering seismological hazards, slope andstability and erosion assessment land use and land use opportunities, coastal sedimentaryprocesses, and engineering geological appraisal.WRC (1989d). Technicul I'eporiN"' 8. Water Resource InIPuciAssessmenis, Wellington RegionalCouncil.Supporting documentation to the formalEIR for future SHIToute (WRC 1989a). Coversfreshwater quality and biology, hydrology and coastal and marine biological evaluation,highlighting the present situation and potential impact. Lists species of fish,macroinvertebrates. MapssubcatchmentsReportfor Porirua City Council & Wellington City CouncilBlaschke and Rutherford Environmental ConsultantsFebruary 20.043