Annual report 2006-2007 - Taranaki Regional Council

More documents

Recommendations

Info

Special condition 4 defines the mixing zone and limits on adverse effects in the receiving waters, and condition 5 is a review condition. 40 The permit is attached to this report in Appendix I. 3.2.2 Air discharge permit Section 15(1)(c) of the Resource Management Act stipulates that no person may discharge any contaminant from any industrial or trade premises into air, unless the activity is expressly allowed for by a resource consent, a rule in a regional plan, or by national regulations. Taranaki Galvanizers holds air discharge permit 4064 to cover the discharge emissions to the air from the operation of a hot dip galvanising plant and associated processes. This permit was issued by the Taranaki Regional Council on 20 June 1995 under Section 87(e) of the Resource Management Act. It is due to expire on 1 June 2010. Special condition 1 requires the consent holder to adopt the best practicable option. Special condition 2 requires that offensive or objectionable odours or dangerous fumes or odours shall not pass the property boundary. Special conditions 3 and 4 define the processes that should be used in galvanising and cleanliness requirements to minimise adverse effects. Special condition 5 requires the consent holder to notify the Council when undertaking any alteration to the plant, operations or processes which may significantly change the nature or quantity of contaminants discharged to air from the site. Special condition 6 is a review condition. The permit is attached to this report in Appendix I. 3.3 Monitoring programme The monitoring programme for Taranaki Galvanisers consisted of three primary components in addition to programme liaison and management. 3.3.1 Site inspections The galvanising site was visited two times during the monitoring period for routine site inspections. With regard to consents for the discharge to water, the main points of interest were plant processes with potential or actual discharges to receiving watercourses, including contaminated stormwater and process wastewaters. Air inspections focused on plant processes with associated actual and potential emission sources and characteristics, including potential odour, dust, noxious or offensive emissions. The neighbourhood was surveyed for environmental effects.
3.3.2 Chemical sampling 41 The Taranaki Regional Council undertook sampling of both the discharge from the site (site 4b, Figure 1) and the water quality in the unnamed tributary downstream of the discharge point and mixing zone (site 4, Figure 1). The galvaniser stormwater discharge (site 4b) was not sampled in the reported period, as the pipe was not discharging. The tributary (drain) below the galvanisers discharge was sampled twice; with the samples analysed for conductivity, pH, water temperature and zinc (dissolved). The tributary was sampled once in conjunction with the low flow survey of the Kahouri Stream catchment and the samples were analysed for the additional parameters turbidity and ammoniacal nitrogen (NH4-N) (Table 2). The low flow survey monitors discharges from several industries and the receiving water. 3.3.3 Biomonitoring surveys One shared biological survey was performed in seven sites in the Kahouri Stream catchment on 17 April 2007 to determine whether or not the discharges from the various industries have had a detrimental effect upon the communities of the stream. The location of these sites is shown in Figure 1. When assessing the effects of the Taranaki Galvanizers discharge, site D (in the tributary of the Kahouri Stream), and in the Kahouri Stream, sites C (50 m downstream of the tributary that receives the abattoir discharge) and E (at Flint Road bridge) were used to assess the effects of the discharge on the biological communities of the stream. 3.4 Results 3.4.1 Water 3.4.1.1 Inspections Two routine inspections of the Taranaki Galvanizers site were conducted during the 2006-2007 monitoring year. Inspections focus on stormwater and wastewater management at the site as well as air emissions from the site. Effluent sampling was undertaken in combination with the site inspections. The first inspection was conducted on 14 December 2006. The out side area was very tidy, with no chemicals or contaminants noted. The waste water was contained at the rear of site, and is removed when necessary. Odours were noted at the door to the main building, but there were no visible emissions. On 28 June 2007 a second inspection of the site was undertaken. General activities were occurring on site. All waste water was being collected, and there was adequate storage available. There were noticeable odours present directly alongside building, near the doors, with visible emissions from the extractor fan on the western side. However, there were no noticeable effects offsite. 3.4.1.2 Results of water discharge monitoring The roadside drain below Taranaki Galvanizers has been piped with two manholes in the flow path. There is a yellow ‘Novaflow’ pipe drain that previously exited adjacent to the Kahouri Stream tributary where it emerged at the road from
Page 1:
Kahouri Stream Monitoring Programme
Page 4: Six complaints, which were logged a
Page 7 and 8: ii 2.7 Recommendations 37 3. Tarana
Page 9 and 10: iv 6.6.4 Recommendations from the 2
Page 11 and 12: vi List of tables Table 1 Resource
Page 13: Figure 6 Biological oxygen demand (
Page 16 and 17: Section 11 presents recommendations
Page 18 and 19: 1.2.1 Other resource consents A tot
Page 20 and 21: Figure 1 Biological and chemical mo
Page 22 and 23: 2. Taranaki Abattoir Co (1992) Limi
Page 24 and 25: 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 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 76 and 77: 62 In the case of Egmont Tanneries,
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
Page 173 and 174:
To Job Manager, B Jansma From Scien
Page 175 and 176:
Figure 1 Biomonitoring sites in the
Page 177:
Table 3 Macroinvertebrate fauna of
Page 180 and 181:
MCI value 140 120 100 80 60 40 20 0
Page 182 and 183:
Site E: Kahouri Stream (KHI000400)
Page 184 and 185:
mayflies, elmid beetles, Archichaul
Page 186 and 187:
Further downstream at Flint Road, t
show all

Annual report 2006-2007 - Taranaki Regional Council

Create successful ePaper yourself

Delete template?

Save as template?