HORIZONS’ COMPLIANCE REPORTS FOR THE RDC’S LEACHATE DISPOSAL

 Compliance Reports  (Mar 2009-Feb 2012)

6. March 2009           
Rangitikei District Council (Marton)
Private Bag 1102
MARTON 4741
Location: MAKIRIKIRI ROAD CROFTON

 

File:                                 5/9/RDC

Consent:                          7312

Performance Assessment:

Did I comply with the conditions of my consent? Yes

Adrian

Thank you for meeting with me on 18 March 2009, please also thank Andrew, an please accept my apologies for the delay in sending this report through to you.

During the meeting we discussed the sampling locations for the Marton STP, as I said there appear to be discrepancies between our results and the ones RDC have provided.  I have assessed compliance based on the monthly sampling undertaken by Horizons Regional Council, as I am confident that the downstream sampling has been undertaken as per the resource consent.  Over the period since the last report in July 2008 to end of March 2009, the discharge has complied with the resource consent conditions.  Please ensure that future sampling downstream of the discharge is undertaken at least 500m downstream from the discharge location.  The approximate GPS co-ordinates of the site we sample from are E2713756  N6119167.

I understand that the screens are now operating at the treatment plant and that further improvements to the process have also been implemented.  I also understand that you are planning to fully commission the sand filters and hope that this will result in improved effluent quality.  I understand that in order to do this operation the flow will need to be diverted from the plant for a period of time.  We discussed the fact that the consent related to final effluent quality and in stream effects.  To minimise the in stream effects I understand that the intention is to do the bypass during a period when the stream is not in low flows.  I also understand that the effluent quality is not expected to be impacted too much due to the current poor performance of the plant.  Please inform us when you are doing the work.

Suggested Actions:

Thankyou for complying with the conditions of this consent.  I have enclosed a copy of our results for the period July 2008 to February 2009.  If you have any questions please contact me.

Inspection details:
Officer: Jeffrey Joseph Cooke

Inspection type: Follow up

Consent no: 7312

Inspection time: 16/03/2009 15:00

Cost of inspection (excl. GST): $0.00

Consent type: Discharge Permit

 7.  September 2009

Rangitikei District Council (Marton)
Private Bag 1102
MARTON 4741
Location: MAKIRIKIRI ROAD CROFTON

 

File No:                            5/8/RDC

Consent:                          7312

Performance Assessment:

Did I comply with the conditions of my consent? Yes

Attention Adrian

This report assesses compliance with consent 7312 for the period since March 2009.  During this time your monitoring results indicate that you have non complied with the downstream ammoniacal nitrogen limit on 24 September 2009.  Our sampling was undertaken on the same day but has a significantly lower result.  Generally our sample results for ammoniacal nitrogen are lower than yours by a significant margin.  Please can you confirm where the downstream samples are being taken from.  If it were not for the fact that our samples were from the same day the high result from your sampling would be classed as a significant non compliance.  Given that our sampling was done on the same day and showed a significantly lower concentration I have not non complied this result on this occasion.

The monitoring has been done in accordance with the consent.

It was good to hear about the work that you are doing to improve the tertiary treatment, and your proposal for a floating wetland cover over the anaerobic pond.

As discussed on site, please provide flow data for the effluent discharge, as required by your resource consent.  I understand that this is available, but needs to be retrieved from the system.  I also understand that you are currently working on a project to SCADA your water take and discharge flows and make this information available to Horizons via telemetry or FTP transfer.  Until this system is operational the flow data will need to be provided electronically in accordance with your consents.

Suggested Actions:

Thank you for complying with your resource consent.  It will be interesting to see the effluent quality results following completion of the upgrades to the tertiary treatment plant.

If you have any queries about this inspection, please contact me on 0508 800 800 ext. 862, or email Jeff.Cooke@horizons.govt.nz.

Inspection details:
Officer: Jeffrey Joseph Cooke

Inspection type: Routine

Consent no: 7312

Inspection time: 09/12/2009 09:00

Cost of inspection (excl. GST): $0.00

Consent type: Discharge Permit

 8.  July 2010

Rangitikei District Council (Marton)
Private Bag 1102
MARTON 4741
Location: MAKIRIKIRI ROAD CROFTON

 

File No:                            5/8/RDC

Consent:                          7312

Performance Assessment:

Did I comply with the conditions of my consent? No

Attention Adrian van Niekerken

On 10 June 2010 I visited the Marton STP and the Tutaenui Stream upstream and downstream of the effluent discharge, accompanying one of our Hydrology technicians on the monthly discharge sampling run.  This report relates to this inspection and an analysis of the results received since the last report in December 2009.

At the time of the inspection the floating wetland blanket on the anaerobic lagoon appeared to be operating well and it will be interesting to see how this performs over time.  The Tutaenui stream had a low flow upstream of the effluent outfall, this appears to be a regular occurrence during dry weather periods.  The lack of flow upstream of the effluent discharge means that there is little if any dilution at certain times of year, notably during the summer.  The downstream limits set by condition 1 have been breached during the period December 2009 to June 2010.  The results of your monitoring indicate:-

  • That a breach of the ammoniacal nitrogen limit occurred downstream of the discharge on 19 January 2010 with the downstream concentration being 11.4g/m3 when the upstream concentration was reported as less than 0.01g/m3, the downstream limit being 2.0 or 2.8g/m3 depending on the temperature, no temperature information was provided with the results despite this being required by your consent..
  • That a breach of the dissolved carbonaceous BOD5 limit occurred downstream of the discharge on 30 April 2010 with the downstream concentration being 4g/m3 when the upstream concentration was reported as less than 1g/m3, the limit being 2g/m3.  It is noticeable that the effluent BOD5 on that day was elevated compared to previous samples.

During the inspection on 10 June heterotrophic growths were visible growing on the stream bed at the sampling site 500m downstream of the discharge, these are usually associated with high levels of dissolved organic materials.  Although the CBOD5 measured in the sample obtained on that day was less than 2g/m3 the presence of heterotrophic growths indicates that it is likely elevated concentrations of organic materials do occur.  Additionally the sampling results showed that on 10 June 2010 the ammoniacal nitrogen concentration downstream of the discharge was 3.5mg/l when the upstream concentration was measured as 0.04mg/l.  The water temperature was below 15 degrees C so the limit was 2.8mg/l.

The Rangitikei District council monitoring results do not include temperature and this is required in order to fully assess the ammoniacal nitrogen results, it is also required by your resource consent conditions.  Please ensure that in future temperature data is provided with the water quality results.  Additionally effluent flow data has not been provided for the discharge, the effluent flow at the time of the sampling (once a month) is required to be provided to Horizons Regional Council by condition 2 of your resource consent number 7312.

I also note that the May sampling results appear to be missing from the data sent through to us.  Please can you confirm whether these samples were taken and if they were then provide the results, if the results are not available please can you provide details of the reasons why.

Suggested Actions:

Overall a significant non-compliance rating has been given.  This is due to the breaches of the downstream water quality limits, additionally non-compliances have occurred due to the non-provision of effluent flow or stream temperature data despite these having been requested in previous monitoring reports.

The effluent results from March appear to show a marked improvement in effluent quality relating to DRP and Faecal coliform concentrations, I assume this was when the trials were being undertaken on the new treatment plant.

Please operate the treatment plant in accordance with your resource consent.  Given the issues that occur with the ammoniacal nitrogen concentrations downstream of the discharge please provide an indication of what works are being done to rectify this including timescales for their completion.  Please provide this information by 6 September 2010.  By this date please also provide either the water quality monitoring results for May 2010, or the reasons why these are not available.

Please also provide effluent flow data for the days when the effluent sampling is undertaken, and ensure that temperature data is also provided along with the sampling results.

It will be interesting to see what the effluent quality is once the improvements are complete and fully operational.

If you have any queries about this inspection, please contact me on 0508 800 800 ext. 862, or email Jeff.Cooke@horizons.govt.nz.

Inspection details:
Officer: Jeffrey Joseph Cooke

Inspection type: Routine

Consent no: 7312

Inspection time: 01/07/2010 11:00

Cost of inspection (excl. GST): $1420.00

Consent type: Discharge Permit

Accompanying this report is: your invoice

 9. May 2011 … Significant Non Compliance

Rangitikei District Council (Marton)
Private Bag 1102
MARTON 4741
Location: MAKIRIKIRI ROAD CROFTON
Performance Assessment:

Did I comply with the conditions of my consent? No

Att: Adrian van Niekerken

A routine compliance inspection of the Marton STP was carried out on 03 May 2011. The purpose of this inspection was to assess compliance with resource consent 7312 and 7313.

 

This report relates to the above inspection and information held on our files covering the period 01 July  2010 to 08 August 2011. Below are copies of the relevant consent conditions along with comments from the inspection relating to compliance.

 

GENERAL CONDITIONS APPLICABLE TO PERMITS 7312

Receiving Water Quality

 

1.      The discharge shall not:

a.     cause the production of any conspicuous oil or grease films, scums or foams, or floatable or suspended materials in the receiving waters; or

During the site visit on 3 May 2011 the Tutaenui Stream was in flood. I did not observe any conspicuous oil or grease films, scums or foams, or floatable or suspended materials in the receiving waters that could be contributed to the Marton STP discharge.

Comply

b       cause any emission of objectionable odour; or

During the site visit on 3 May 2011 I did not detect an objectionable odour beyond the property boundary that originated from the Marton STP

Comply

C.      render receiving water unsuitable for consumption by farm animals; or

Faecal coliform levels downstream of the Marton Discharge are statistically higher than corresponding upstream samples. Table 1 shows a significant difference between upstream and downstream sites. The ANZACC guidelines indicate 100 MPN /100ml is the acceptable limit.

Table 1 Faecal coliform levels upstream and downstream of the Marton STP discharge.

 

Downstream Up stream Date
19,000 370 22/02/2011
3,600 890 22/03/2011

 

Significant non compliance 

d.      have any significant adverse effects on aquatic life; or

The One Plan specifies guide lines to protect aquatic life. These guidelines stipulate an acceptable average ammonia level in this catmint is 0.4g/m3 and a maximum of 2.1g/m3.  Water quality samples taken between 19 January 2010 and 19 July 2011 show that ammonia levels downstream of the Marton STP are having adverse effects on the aquatic ecosystem. The maximum value of 14.3g/m3 is considered to be toxic to some aquatic organisms and the average value of 3 is also considered to have significant adverse effects on Aquatic organisms.

 

Table 2 Ammonia levels upstream and downstream of the Marton STP

 

Date Up stream Ammonia  (g/m3) Downstream ammonia

(g/m3)

22/03/2011 0.01 14.3
20/07/2010 0.02 5.45
19/01/2010 0.01 11.4
22/10/2010 0.03 2.33

 

Average 3
Maximum 14.3
19/01/2010 19/07/2011

 Significant non compliance

e.      cause a change in horizontal visibility, defined as the horizontal sighting range of a 200 millimetre diameter black disc, by more that 30%; or, where stream flow is so low as to make horizontal visibility measurement impracticable, or where there is no stream flow upstream of the outfall, cause turbidity to exceed 20 NTU; or

Not assessed

f.       cause a conspicuous change in colour, or

Not assessed

g.      cause the daily average concentration of ammonia (NH4 N) to exceed 2.0

         grams per cubic metre at water temperatures equal to or less than 15C?, or 2.8.grams per cubic metre at water temperatures greater than 15?C; or

As discussed in d above the average ammonia concentration is 3.0g/m3.

Significant Non Compliance

h.      cause the daily average carbonaceous BOD5 concentration due to dissolved organic compounds (that is, material passing through a GF/C filter) to exceed 2.0 grams per cubic metre;

Carbonaceous BOD5 levels downstream of the Marton STP are occasionally above 5. The difference between the upstream and downstream sites is statistically significant. Therefore it is considered that the Marton STP is causing this change in water quality.

Significant Non Compliance.

Monitoring and Reporting

2.      The Consent Holder shall undertake monthly monitoring of the following parameters in the effluent:

·        flow

·        pH 

·        temperature

·        ammonia nitrogen

·        dissolved oxygen

·        dissolved carbonaceous BOD5

·        suspended solids

·        faecal coliforms

·        dissolved reactive phosphorus

·        nitrate nitrogen

a.     for the purpose of monitoring compliance with Conditions 1(g) and 1(h) of this Consent, instantaneous grab sampling will suffice for monitoring of ammonia nitrogen and dissolved carbonaceous BOD5 except where monitoring results show that the concentrations in the grab sample exceed, or nearly exceed, the concentration values in conditions 1(g) or 1(h), in which case the Consent Holder shall, in consultation with the Regional Council, undertake monitoring over a 24 hour period;

b.       Analysis of the above parameters (except flow) shall be undertaken by a certified laboratory;

c.        The monitoring in this condition shall coincide with the monitoring undertaken pursuant to Condition 3;

d.       Where the laboratory used is not the Regional Council laboratory, results shall be forwarded to the Regional Council in January, April, July and October of each year; the results forwarded shall include monitoring for the three month period immediately preceding the reporting month.

RDC analyse there samples for the above specified parameters with the exception of flow and temperature. During 2010 and 2011 RDC failed to take a sample in May, November and December of 2010 and June of 2011. RDC send there samples to Hills Labs which is accredited. RDC forward all of the required sampling results to HRC on a quarterly basis.

HRC take monthly samples at this site and get the samples analysed at Water Care which is an accredited laboratory.

Marginal comply

3.      The Consent Holder shall undertake monthly monitoring of water quality in Tutaenui Stream immediately upstream, and 500 metres downstream, of the discharge outfall. The parameters to be monitored shall include: 

·        black disc visibility

·        colour

·        ammonia nitrogen

·        dissolved carbonaceous BOD5

·        suspended solids

·        particulate organic matter

·        faecal coliforms

·        dissolved reactive phosphorus

·        nitrate nitrogen

·        temperature

·        dissolved oxygen

·        pH

a.      the monitoring in Condition 3 shall coincide with the monitoring undertaken pursuant to Condition 2;

b.      where the laboratory used is not the Regional Council laboratory, results shall be forwarded to the Regional Council in January, April, July and October of each year; the results forwarded shall include monitoring for the three month period immediately preceding the reporting month.

see condition 2

Marginal Comply

4.      The Consent Holder shall conduct an in stream biota survey, including benthic invertebrates and periphyton, during low flows in Tutaenui Stream, once every 3 years from the date of issue of this consent, for the duration of the consent. The survey shall be carried out at four locations: immediately upstream of the discharge outfall, about 50 metres downstream of the outfall, about 500 metres downstream of the outfall, and at Curls Bridge. The Consent Holder shall forward a report on the survey results to the Regional Council within 3 months of the completion of each survey.

A macroinvertebrate report was due in 2010. To my knowledge this survey did not occur. HRC has not received a copy of this Macroinvertebrate study.

Non Comply 

5.      The Consent Holder shall notify the Regional Council whenever it is apparent that a breach in consent conditions has occurred or may be about to occur, and whenever any complaints are received regarding the discharge.

RDC forward all of their results on a quarterly basis. Non compliances are therefore identified to HRC .

Comply

GENERAL CONDITIONS APPLICABLE TO PERMITS 7313

1.      There shall be no offensive or objectionable odour beyond the property boundary that arises from the release of odorous emissions from the receival, handling or treatment of sewage on the property.

During the site visit I did not detect an odour that I considered to be objectionable beyond the property boundary that had originated from the Marton STP.

Comply

2.      Dissolved oxygen in the second of the three treatment ponds shall be greater than 1.0 grams per cubic metre at all times. The dissolved oxygen in the second pond shall be continuously monitored and recorded. Records shall be available for inspection at all times, and shall be forwarded to the Regional Council on request.

RDC sampling since 06 June 2010 and 9 August 2011 indicate that the Dissolved Oxygen levels were greater than 1.0g/m3 at the time of sampling.

Comply

3.      Algicides shall not be used for the mitigation of algal blooms without prior consultation with the Regional Council, and approval as to methods of application.

Based on conversations with Adrian van Niekerken during the site visit, Algicides are used at the Marton STP.

Comply

4.      There shall be no change to the process that substantially changes the quantity or nature of emissions to air from the site without prior consultation with the Manawatu Wanganui Regional Council.

RDC have not made any changes to the Marton STP that would increase or change the nature of the emissions.

Comply

Reporting

5.      The Consent Holder shall maintain a complaints register, which shall record:

a.      public complaints regarding odour, and the time they were received;

b.      weather conditions at the time of the complaint including (but not necessarily limited to) an estimate of wind speed and direction;

C.      plant operations or malfunctions at the time of complaint; and

d.      remedial measures or other action taken as a result of the odour complaint.

The register shall be made available to the Regional Council on request.

Not assessed as the complaints roster has not been viewed.

6.      The Consent Holder shall notify the Regional Council whenever it is apparent that a breach in consent conditions has occurred, or may be about to occur.

HRC are not aware of any breaches associated with this consent

Comply

 

Suggested Actions:

The level of treatment being achieved is needs to be improved. I understand that RDC are upgrading several of their plants. It is considered that improving the management of this plant could potentially have positive effects on the resulting water quality.

 

If you have any queries about this report, please contact me on 0508 800 800 ext. 862, 0212477341 or email Robert.Rose@horizons.govt.nz.

 

 

 

 

 

Regards

Robert Rose

 

Inspection details:
Officer: Robert Rose

Inspection type: Routine

Consent no: 7312

Inspection time: 03/05/2011 12:00

Cost of inspection (excl. GST): $1420.00

Consent type: Discharge Permit

Accompanying this report is: your invoice

 

10. February 2012

23 February 2012

Rangitikei District Council (Marton)                                              Consents:7312 and 7313
Private Bag 1102                                                                             File:5/8/RDC
MARTON 4741                                                                             RAR:SAB
Attn: Adrian van Niekerken

 

LOCATION:      MARTON SEWAGE TREATMENT PLANT

                          MAKIRIKIRI ROAD, CROFTON

 Performance Assessment:

Did I comply with the conditions of my consent? Yes

A routine compliance assessment of the Marton Sewage Treatment Plant (STP) was carried out on 13 February 2012. The purpose of this assessment was to assess compliance with resource consent 7312 and 7313. A site visit occurred on 22 February 2012.

 

This report relates to the above assessment and is based on the information held on our files covering the period 8 August 2011 to 22 February 2012. Below are copies of the relevant consent conditions along with comments from the assessment relating to compliance

 

GENERAL CONDITIONS APPLICABLE TO PERMIT 7312

Receiving Water Quality

 

1.      The discharge shall not:

a.     cause the production of any conspicuous oil or grease films, scums or foams, or floatable or suspended materials in the receiving waters; or

During the site visit on 22 February 2012 I did not observe any conspicuous oil or grease films, scums or foams, or floatable or suspended materials in the receiving waters; that could be attributed to the Marton STP discharge.

Comply

b       cause any emission of objectionable odour; or

During the site visit on 22 February 2012 I did not detect an odour that had derived from the Marton STP that I considered to be objectionable. Between 8 August 2011 and 22 February 2012 HRC has not received any odour complaints associated with the Marton STP.

Comply

C.      render receiving water unsuitable for consumption by farm animals; or

E.coli levels downstream of the Marton STP discharge exceed the ANZECC stock water quality standards. However, a statistical difference between the upstream and downstream sample points was not achieved, therefore, it is considered that the discharge has not rendered the receiving water unsuitable for farm animal consumption.

Comply

d.      have any significant adverse effects on aquatic life; or

Based on evidence presented in relation to the One Plan hearings, a change of 20% in the QMCI value is considered to be significant. Between 8 August 2011 and 13 February 2012 however there has been no macro invertebrate surveys undertaken to my knowledge, therefore, a QMCI value has not been generated and as a result this condition can not be assessed.

 

It should be noted that the ammonia levels downstream of the discharge can periodically be very high compared to the corresponding upstream sample, see Table 1 for details. Ammonia levels detected on 15 September 2011 are considered to be toxic to aquatic life.

 

Table 1: Ammonia levels

Ammonia Discharge Downstream Up Stream
11-Aug-11 29.6 1.363 0.019
15-Sep-11 41 23.2 0.043
13-Oct-11 35.8 0.132 0.132
17-Nov-11 18.2 0.02 0.036
20-Dec-11 19 1.8 0.032
12-Jan-12 23 1.3 0.06

 

Not assessed

e.      cause a change in horizontal visibility, defined as the horizontal sighting range of a 200 millimetre diameter black disc, by more that 30%; or, where stream flow is so low as to make horizontal visibility measurement impracticable, or where there is no stream flow upstream of the outfall, cause turbidity to exceed 20 NTU; or

 

Between 8 August 2011 and 13 February 2012 I have not done a black disk assessment.

Not assessed

f.       cause a conspicuous change in colour, or

During the site visit on 22 February 2012 there was no flow above the discharge. It is considered that if there was flow above the discharge a conspicuous change would have been observed. The Marton STP discharge has a green appearance presumably due to high algae levels. RDC should look into ways that they can address this issue as it could lead to non compliances in the future.

Not assessed – marginal

g.      cause the daily average concentration of ammonia (NH4 N) to exceed 2.0

         grams per cubic metre at water temperatures equal to or less than 15Co, or 2.8.grams per cubic metre at water temperatures greater than 15Co; or

Between 8 August 2011 and 13 February 2012 the average ammonia concentration downstream of the Marton STP discharge was 4.6g/m3. The one off sample taken on 15 September 2011 has skewed the data set. All other samples were below 2.0g/m3. Based on these 6 data points a significant difference has not be achieved. This is largely due to a small data set. These data points will be used in the next assessment period.

Comply  – marginal

h.      cause the daily average carbonaceous BOD5 concentration due to dissolved organic compounds (that is, material passing through a GF/C filter) to exceed 2.0 grams per cubic metre;

Between 8 August 2011 and 13 February 2012 the cBOD5 levels down stream of the Marton STP at the time of sampling have all been below 2g/m3.

Comply

Monitoring and Reporting

2.      The Consent Holder shall undertake monthly monitoring of the following parameters in the effluent:

·        flow

·        pH 

·        temperature

·        ammonia nitrogen

·        dissolved oxygen

·        dissolved carbonaceous BOD5

·        suspended solids

·        faecal coliforms

·        dissolved reactive phosphorus

·        nitrate nitrogen

a.     for the purpose of monitoring compliance with Conditions 1(g) and 1(h) of this Consent, instantaneous grab sampling will suffice for monitoring of ammonia nitrogen and dissolved carbonaceous BOD5 except where monitoring results show that the concentrations in the grab sample exceed, or nearly exceed, the concentration values in conditions 1(g) or 1(h), in which case the Consent Holder shall, in consultation with the Regional Council, undertake monitoring over a 24 hour period;

b.       Analysis of the above parameters (except flow) shall be undertaken by a certified laboratory;

c.        The monitoring in this condition shall coincide with the monitoring undertaken pursuant to Condition 3;

d.       Where the laboratory used is not the Regional Council laboratory, results shall be forwarded to the Regional Council in January, April, July and October of each year; the results forwarded shall include monitoring for the three month period immediately preceding the reporting month.

RDC analyse their samples for the above specified parameters with the exception of temperature. RDC send their samples to Hills Laboratories which is accredited to analyse water samples for the above identified parameters. RDC forward all of the required sampling results to HRC on a quarterly basis.

HRC take monthly samples at this site and get the samples analysed at Water Care which is an accredited laboratory.  HRC and RDC are in the process of setting up a contract so HRC take all of the required monthly sampling. I am unaware at what stage this process is at.

Comply

3.      The Consent Holder shall undertake monthly monitoring of water quality in Tutaenui Stream immediately upstream, and 500 metres downstream, of the discharge outfall. The parameters to be monitored shall include:

·        black disc visibility

·        colour

·        ammonia nitrogen

·        dissolved carbonaceous BOD5

·        suspended solids

·        particulate organic matter

·        faecal coliforms

·        dissolved reactive phosphorus

·        nitrate nitrogen

·        temperature

·        dissolved oxygen

·        pH

a.      the monitoring in Condition 3 shall coincide with the monitoring undertaken pursuant to Condition 2;

b.      where the laboratory used is not the Regional Council laboratory, results shall be forwarded to the Regional Council in January, April, July and October of each year; the results forwarded shall include monitoring for the three month period immediately preceding the reporting month.

See condition 2

Comply

4.      The Consent Holder shall conduct an in stream biota survey, including benthic invertebrates and periphyton, during low flows in Tutaenui Stream, once every 3 years from the date of issue of this consent, for the duration of the consent. The survey shall be carried out at four locations: immediately upstream of the discharge outfall, about 50 metres downstream of the outfall, about 500 metres downstream of the outfall, and at Curls Bridge. The Consent Holder shall forward a report on the survey results to the Regional Council within 3 months of the completion of each survey. 

A macroinvertebrate report is due in 2012. Discussions with RDC have indicated that a macroinvertebrate report has been commissioned. Please ensure that this survey has occurred prior to 31 December 2012.

Comply

5.      The Consent Holder shall notify the Regional Council whenever it is apparent that a breach in consent conditions has occurred or may be about to occur, and whenever any complaints are received regarding the discharge.

RDC keep HRC well informed of what is occurring on site in relation to any issues that may result in non compliances. The monthly samples that RDC take are also forwarded to HRC on a quarterly basis.

Comply

GENERAL CONDITIONS APPLICABLE TO PERMIT 7313

1.      There shall be no offensive or objectionable odour beyond the property boundary that arises from the release of odorous emissions from the receival, handling or treatment of sewage on the property.

Between 8 August 2011 and 13 February 2012, HRC have not received any odour complaints in relation to the Marton STP.

Comply

2.      Dissolved oxygen in the second of the three treatment ponds shall be greater than 1.0 grams per cubic metre at all times. The dissolved oxygen in the second pond shall be continuously monitored and recorded. Records shall be available for inspection at all times, and shall be forwarded to the Regional Council on request.

RDC sampling between 9 August 2011 and 13 February 2012 indicate that the dissolved oxygen levels were greater than 1.0g/m3 at the time of sampling.

Comply

3.      Algicides shall not be used for the mitigation of algal blooms without prior consultation with the Regional Council, and approval as to methods of application.

Based on conversations with Adrian van Niekerken, Algicides are not used at the Marton STP.

Comply

4.      There shall be no change to the process that substantially changes the quantity or nature of emissions to air from the site without prior consultation with the Manawatu Wanganui Regional Council.

Between 8 August 2011 and 13 February 2012, RDC have not made any changes to the Marton STP that would increase or change the nature of the emissions.

Comply

Reporting

5.      The Consent Holder shall maintain a complaints register, which shall record:

a.      public complaints regarding odour, and the time they were received;

b.      weather conditions at the time of the complaint including (but not necessarily limited to) an estimate of wind speed and direction;

C.      plant operations or malfunctions at the time of complaint; and

d.      remedial measures or other action taken as a result of the odour complaint.

The register shall be made available to the Regional Council on request.

Not assessed as the complaints register has not been viewed. Please provide a copy of the complaints register before 31 March 2012.

Not assessed

6.      The Consent Holder shall notify the Regional Council whenever it is apparent that a breach in consent conditions has occurred, or may be about to occur.

HRC are not aware of any breaches associated with this consent.

Comply

 

 Recommended:

Thank you complying with the above conditions.

 

As discussed under 1(f) the clarity of the discharge needs to be improved to ensure that the discharge complies with the above standards. During discussions on 22 February 2012, RDC indicated that Marton STP needed improvements to the front end of the treatment system.

 

 

As discussed short circuiting during certain flows in a majority of the pond systems is a problem. It is highly recommended that RDC look into ways to reduce the risk of short circuiting. This in turn will increase residence time which will increase the level of treatment. As discussed, getting the Bulls STP and Marton STP up to an adequate standard needs to be RDCs priority.

 

 

If you have any queries about this report, please contact me on 0508 800 800 ext. 862, 021 247 7341 or email Robert.Rose@horizons.govt.nz.Regards

 

 

 

 

 

 

Robert Rose

ENVIRONMENTAL COMPLIANCE OFFICER

 

Inspection details:
Officer: Robert Rose

Inspection type: Routine

Consent no: 7312

Inspection time: 13/02/2012 10:30

Cost of inspection (excl. GST): $0.00

Consent type: Discharge Permit

 

 

Your comments are welcomed

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Watching our environment … our health … and corporations … exposing lies and corruption

%d bloggers like this: