Decision report- Carey's Gully Sludge Dewatering Facility - Greater ...
Decision report- Carey's Gully Sludge Dewatering Facility - Greater ...
Decision report- Carey's Gully Sludge Dewatering Facility - Greater ...
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6. The permit holder shall ensure that all installed emissions control equipment<br />
namely the biofilter, including all ducting and ventilation equipment shall be<br />
well-maintained and operating correctly in a fully functional state.<br />
PAGE 48 OF 57<br />
The emissions control equipment shall draw adequate negative pressure to<br />
ensure the effective capture and treatment of air discharged from the <strong>Sludge</strong><br />
<strong>Dewatering</strong> Plant building, centrate wet well, and all other areas from which<br />
air is extracted to ensure that fugitive emissions are minimised.<br />
7. The permit holder shall ensure that the liquid sludge storage tanks, significant<br />
odour generating processes within De-watering Plant Building, and from the<br />
Centrate Plant wetwell, shall be mechanically ventilated to a biofilter to<br />
minimise the emission of odour into air.<br />
The volume of ventilation air discharged to the biofilter or biofilters shall not<br />
exceed a rate that causes the biofilter loading to exceed 40m 3 of inlet air flow<br />
per m 3 of active media per hour (40 m 3 /m 3 /hour).<br />
During any maintenance works when the biofilter or biofilters are operating<br />
without one cell, the volume of ventilation air discharged to the biofilter or<br />
biofilters shall not exceed a rate that causes the biofilter loading to exceed<br />
50m 3 of inlet air flow per m 3 of active media per hour (50m 3 /m 3 /hour).<br />
The permit holder shall notify the Manager, Environmental Regulation,<br />
Wellington Regional Council of any proposed maintenance a minimum of 48<br />
hours prior to the works commencing.<br />
Note: Notice can be emailed to notifications@gw.govt.nz. Please include the<br />
consent reference (WGN070230) and a contact name and number of a person<br />
responsible for the works.<br />
8. As far as practicable, the permit holder shall ensure, to minimise the time that<br />
sludge skip bins containing dewatered sludge are held at the facility, that<br />
filling of skips is sequenced so that skips are full (as defined in the SDLP<br />
required under Condition 9 of permit WGN070230 [26013]) before loading<br />
into an empty skip.<br />
Administrative conditions<br />
9. The permit holder shall keep a record of complaints received alleging adverse<br />
effects from the permit holder's operations. The complaints record shall<br />
contain the following where practicable:<br />
• The name and address of the complainant, if supplied;<br />
• Identification of the nature of the complaint;<br />
• Date and time of the complaint;<br />
• Weather conditions at the time of the complaint;<br />
• Results of the permit holder's investigations; and<br />
• Any mitigation measures adopted.