*Literature review of Porirua Harbour and catchmentAppendix 2: Annotated Bibliographyassessed water quality for shellfish gathering. Sites sampled in POTirua Harbour areamongst the worst for compliance with recreation guidelines. Sites that most frequentlyexceeded guidelines included Browns Bay, South Beach PIimmer<strong>to</strong>n, POTirua Harbour atthe rowing club and PIinuner<strong>to</strong>n Beach at Bath St. Discusses each sampling site'spercentage compliance and coincidence with rainfall. Most exceedanCGs are related <strong>to</strong>rainfall and contaminants are likely sourced from urban runoff. However, manyexceedanCG events coincide with little or no rainfall, and the cause of these highmicrobial counts is unclear. fits possible that nearby streams are influencing the nearbywater quality. Bestlevels of compliance were at the Water Ski Club, Moiukaraka Point,Karehana Bay, Paremata Beach and Onehunga Bay (all 87 90% compliance). Samplingresults at Te Hiko were consistently poor, and clearly indicates that site was riot suitablefor swimming, so a permanent sign was erected and moni<strong>to</strong>ring ceased. Water quality inrelation <strong>to</strong> shellfish consumption was undertaken at To Hiko, and was unsafe for shellfishgathering or consumption, based on collected samples and other water quality resultsMilne, I. R. (2006b). 011 the benches. Reci'euiional water quotrty for Ihe Welling!o11 Region,2005-2006. <strong>Greater</strong> <strong>Welling<strong>to</strong>n</strong> Regional Council, Report N"' GW/RINV-G-06199Routine recreational water quality as initiated with Berry (1996b). Similar <strong>to</strong> Stephenson(2004). 14 sites moni<strong>to</strong>red in POTirua Harbour; none of these exceeded the enterococciguidelinesMilne, I. R. (2007). 011 lite benches. 2006/07 Annual recreational water qwali!y 1110niioringyeporijor Ihe Welling10n Region. Environmental Moni<strong>to</strong>ring and Investigations Department,<strong>Greater</strong> <strong>Welling<strong>to</strong>n</strong> Regional Council, Report No. GW/EMI-T-07/126Routine recreational water quality as initiated with Berry (1996b) and similar <strong>to</strong>Stephenson (2004). 14 sites moni<strong>to</strong>red in POTirua Harbour; of these 12 sites exceeded theenterococci guideline values once, and 4 sites twice or more. In 2005/06 no sitesbreached the guidelines. Could notidentify obvious cause of contaminationMilne, I. R. (2008). AnHunt codsiu11110/1iiori, 18 yeporifor 1/7e Welling1011 Region, 2007/08Environmental Moni<strong>to</strong>ring and Investigations Department, <strong>Greater</strong> <strong>Welling<strong>to</strong>n</strong> Regional Council,Publication N" GW/EMI-G-08/162.Summary of routine summer and annual coastal sampling of water quality in terms ofenterococci and faecal coliforms, in order 10 assess health risks. Data in appendix.Summarises reports commissioned for sites in region including POTirua HarbourDescribes results of broadscale habitat mapping and finescale ecological mapping ofinterndal areas of POTirua Harbour (Robertson and Sievens 2008). Identifies that in botharms of the Harbour there is little <strong>to</strong> no terrestrial vegetation buffer. The estuary has amoderate sedimentation risk, and is moderately eutrophic. The <strong>to</strong>tal recoverable heavymetal concentrations were within ANZECC (2000) IsQG. Describes the benthiccommunity, and rates the community as 'unbalanced'.Milne, I. R. and S. Warr (2007). Annual cousinli?10/1i<strong>to</strong>riitg reportfor Ihe Well^I^gio, I region,2006/07. Environmental Moni<strong>to</strong>ring and Investigation Department, <strong>Greater</strong> <strong>Welling<strong>to</strong>n</strong> RegionalCouncil, Report N"' GW/EMI-T-07/224.Routine coastal water quality as initiated in Berry (1996b) and similar <strong>to</strong> Stephenson(2001). Also includes overview of a report that is being undertaken on the POTiruaHarboursystemReportfor Porirua City Council & <strong>Welling<strong>to</strong>n</strong> City CouncilBlaschke and Rutherford Environmental ConsultantsFebruary 201030
Literature review of Porirua Harbour and catchmentAppendix 2: Annotated BibliographyMilne, J. R. and K. Wyatt (2006). Will I get sick illswini? Sunubili!y for recreaiioit grade forselecied Inarine und fresh warer bathing sites ill Ihe Well^^Igioit region. EnvironmentalMoni<strong>to</strong>ring and Investigations, <strong>Greater</strong> <strong>Welling<strong>to</strong>n</strong> Regional Council, GW/EMI-G-06/160Presents suitability for recreation grades (SFRG) for 23 freshwater and 76 marine sitesbased on microbiologicalrisk and indica<strong>to</strong>r bacterial results, over the period 2001- 2006Ten sites are sampled in the POTirua Harbour area. SFRG based on Ministry forEnvironment and Ministry of Heatlh pro<strong>to</strong>col; assessment from a public healthperspective. Overall, only 17% of sites were rated very good or good, while most (74%)were poor or very poor. This reflects moderate <strong>to</strong> high risk of microbial contaminationOverall, Sri
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