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Annual report 2006-2007 - Taranaki Regional Council

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Chemical oxygen demand (g/m 3 )<br />

1200<br />

1000<br />

800<br />

600<br />

400<br />

200<br />

0<br />

Jul-88<br />

21<br />

Chemical oxygen demand in discharge from <strong>Taranaki</strong> Abattoirs<br />

Jul-90<br />

Jul-92<br />

Jul-94<br />

Jul-96<br />

Figure 7 Chemical oxygen demand (COD) concentrations in the discharge from the aerobic pond<br />

at <strong>Taranaki</strong> Abattoirs. Clear diamonds indicate <strong>2006</strong>-<strong>2007</strong> monitoring results<br />

Ammoniacal nitrogen (g/m 3 )<br />

300<br />

250<br />

200<br />

150<br />

100<br />

50<br />

0<br />

Jul-88<br />

Jul-98<br />

Jul-00<br />

Jul-02<br />

Jul-04<br />

Ammoniacal nitrogen in discharge from <strong>Taranaki</strong> Abattoirs<br />

Jul-90<br />

Jul-92<br />

Jul-94<br />

Jul-96<br />

Figure 8 Ammoniacal nitrogen (NH4-N) concentrations in the discharge from the aerobic pond at<br />

<strong>Taranaki</strong> Abattoirs. Clear diamonds indicate <strong>2006</strong>-<strong>2007</strong> monitoring results<br />

Jul-98<br />

Jul-00<br />

Jul-02<br />

Jul-04<br />

Jul-06<br />

Jul-06

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