Annual report 2006-2007 - Taranaki Regional Council

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62 In the case of Egmont Tanneries, the programme for 2006-2007 was reduced from two inspections per year to one. Also, sampling of the effluent was reduced to one sample, as was the sampling of the unnamed tributary. This is a very basic level of monitoring, and therefore should be maintained at this level for the 2007-2008 monitoring period. A recommendation to this effect is attached to this report. 4.6.6 Exercise of optional review of consent There are no consents held by the Company that allow for an optional review of consent in June 2008. 4.7 Recommendations 1. THAT monitoring of air emissions from Egmont Tanneries in the 2007-2008 year continue at the same level as in 2006-2007. 2. THAT monitoring of discharges from Egmont Tanneries in the 2007-2008 year continue at the same level as in 2006-2007.
5. Transpower NZ Limited 5.1 Process description 63 Transpower NZ Limited owns an electricity sub-station on the southern bank of the Kahouri Stream, 2km east of Stratford on State Highway 43, for distribution of power generated at the 360 MW power station of Stratford Power. The sub-station is operated by Powermark Taranaki Limited. The site is used as a depot for several firms involved in the electricity industry. During the period under review, about 19 persons were employed at the complex, five at the power station and 14 at the sub-station. (The power station was closed indefinitely in October 1999). Domestic wastes from the sub-station, and from the premises of the power station, are treated in seven septic tanks close to source. Effluent from the septic tanks is piped by gravity to a (4 m 3) central effluent holding tank on the sub-station site. The tank contents are dosed periodically onto two biological sand filters for polishing before discharge to the Kahouri Stream. Maintenance of the wastewater treatment system is sub-contracted by Opus International Consultants to G & C Contracting who are responsible for changing the discharge pipe over once a week and maintaining the sand filter beds. Effluent from the filter beds is discharged directly to the Kahouri Stream. The dosing cycle typically occurs twice per day. The duration of each discharge is about 20 minutes. The treatment system is sized for a resident population of twenty-eight and a nonresident population of 120. The daily dry weather flow is based on an estimated per capita flow of 240 litres per day for the resident population and 50 litres per day for the non-residents. The estimated dry weather flow is 12.7 cubic metres per day. The maximum design discharge volume is estimated at four times the dry weather flow (50.8 cubic metres per day). 5.2 Resource consents 5.2.1 Water discharge permit Section 15(1)(a) of the Resource Management Act stipulates that no person may discharge any contaminant into water, unless the activity is expressly allowed for by a resource consent or a rule in a regional plan, or by national regulations. Transpower NZ Limited holds water discharge permit 1211 to discharge treated domestic sewage from Stratford Power Substation to the Kahouri Stream. This permit was issued by the Taranaki Regional Council on 17 December 1997 under Section 87(e) of the Resource Management Act. It expires on 1 June 2016. The special conditions define the effects that shall not be observed in the Kahouri Stream below the 50 metre mixing zone, and require that the consent holder shall only discharge sewage in accordance with documentation submitted in support of the consent.
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Kahouri Stream Monitoring Programme
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Six complaints, which were logged a
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ii 2.7 Recommendations 37 3. Tarana
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iv 6.6.4 Recommendations from the 2
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vi List of tables Table 1 Resource
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Figure 6 Biological oxygen demand (
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Section 11 presents recommendations
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1.2.1 Other resource consents A tot
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Figure 1 Biological and chemical mo
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2. Taranaki Abattoir Co (1992) Limi
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10 Waste liquor and floor washings
Page 26 and 27: 2.2.2 Water discharge permit 12 Sec
Page 28 and 29: 24 March 2005, under Section 87(e)
Page 30 and 31: 16 plant staff were made aware of t
Page 32 and 33: 18 inspection, staff also outlined
Page 34 and 35: Dissolved oxygen (g/m 3 ) 35 30 25
Page 36 and 37: Dissolved Reactive Phosphorus (g/m3
Page 38 and 39: 24 In comparing the results (upstre
Page 40 and 41: 26 Biological survey The Council’
Page 42 and 43: SQMCIs Value 7 6 5 4 3 2 1 0 A C E
Page 44 and 45: 2.6 Discussion 2.6.1 Discussion of
Page 46 and 47: Table 7 Summary of performance for
Page 48 and 49: 34 Condition requirement Means of m
Page 50 and 51: 36 1. THAT monitoring of air emissi
Page 52 and 53: 3. Taranaki Galvanizers 3.1 Process
Page 54 and 55: Special condition 4 defines the mix
Page 56 and 57: 42 underneath the galvanising plant
Page 58 and 59: NH 4 -N (g/m 3 ) 44 Ammoniacal nitr
Page 60 and 61: 3.4.2 Air 46 Air monitoring in the
Page 62 and 63: 48 Table 14 Summary of performance
Page 64 and 65: 4. Egmont Tanneries Limited 4.1 Pro
Page 66 and 67: permit was issued by the Taranaki R
Page 68 and 69: 54 An additional inspection was und
Page 70 and 71: 56 Table 16 Results of summer low-f
Page 72 and 73: 58 In the 2006-2007 year, there was
Page 78 and 79: 5.3 Monitoring programme The monito
Page 80 and 81: 66 Water chemistry The chemical wat
Page 84 and 85: 6. Contact Energy Limited (closed p
Page 86 and 87: 72 not suggest that discharges from
Page 88 and 89: 74 7. Contact Energy Limited (CCPS)
Page 90 and 91: 7.3.2 Biomonitoring surveys 76 One
Page 92 and 93: 78 Condition requirement Means of m
Page 94 and 95: 8. Fletcher Concrete & Infrastructu
Page 96 and 97: 8.3.2 Chemical sampling 82 The Tara
Page 98 and 99: 84 The stream at this site had a cl
Page 100 and 101: 8.6.5 Alterations to monitoring pro
Page 102 and 103: 88 what effects the discharge shall
Page 104 and 105: 90 Incidents may be alleged to be a
Page 106 and 107: 10. Water quality in the Kahouri ca
Page 108 and 109: 94 Most MCI scores were similar to
Page 110 and 111: 96 12. Summary of recommendations 1
Page 112 and 113: NH3 unionised ammonia, normally exp
Page 115: Appendix I Resource consents held b
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To Job Manager, B Jansma From Scien
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Figure 1 Biomonitoring sites in the
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Table 3 Macroinvertebrate fauna of
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MCI value 140 120 100 80 60 40 20 0
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Site E: Kahouri Stream (KHI000400)
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mayflies, elmid beetles, Archichaul
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Further downstream at Flint Road, t
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Annual report 2006-2007 - Taranaki Regional Council

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