HORIZONS’ COMPLIANCE REPORTS FOR THE RDC’S LEACHATE DISPOSAL

Compliance Reports (Feb 2012-Mar 2013) 

 11. February 2012

 

23 February 2012Rangitikei 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? YesA 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 RoseInspection type: RoutineConsent no: 7312 Inspection time: 13/02/2012 10:30Cost of inspection (excl. GST): $0.00Consent type: Discharge Permit

 12. Compliance Audit Report

 

 

 

COMPLIANCE AUDIT REPORT

RANGITIKIE DISTRICT COUNCIL

MARTON

WASTEWATER TREATMENT PLANT

 

 

 

Consents

7312 and 7313

 

 

Reporting Period

22 November 2012 to 26 March 2013.

 

 

 

 

 

May 2013


 

 Prepared By

Robert Rose

Environmental Protection Officer

 

 

 

CONTACT 24hr Freephone   0508 800 800 help@horizons.govt.nz http://www.horizons.govt.nz
SERVICE

CENTRESKairanga

Cnr Rongotea &
Kairanga-Bunnythorpe Rds

Palmerston North

Marton

Cnr Hammond & Hair Sts

Taumarunui

34 Maata Street

Woodville

Cnr Vogel (SH2) & Tay StsREGIONAL

HOUSESPalmerston North

11-15 Victoria Avenue

Wanganui

181 Guyton StreetDEPOTSLevin

11 Bruce Road

Taihape

Torere Road

Ohotu            POSTAL ADRESSHorizons Regional Council, Private Bag 11025, Manawatu Mail Centre, Palmerston North 4442 | F  06 9522 929

 

Contents

  1. PERFORMANCE ASSESSMENT. 4
  2. EXECUTIVE SUMMARY. 4
  3. CONSENT DEADLINES. 4
  4. SCOPE OF REPORT. 5
  5. UP GRADES. 5
  6. CONDITIONS APPLICABLE TO PERMIT 7312. 5
  7. CONDITIONS APPLICABLE TO PERMIT 7313. 11
  8. OTHER MATTERS. 13

8.1            File Transfer Protocol 13

  1. RECOMMENDATIONS. 13
  2. CONCLUSION.. 14

 

FIGURES AND TABLES

 

Table 1: E.coli – Tutaenui Stream – Marton WWTP  1. 6

Table 2: Black Disc – Tutaenui Stream – Marton WWTP  1. 7

Table 3: Turbidity-Tutaenui Stream – Marton WWTP   1. 7

Table 4: Ammonical nitrogen – Tutaenui Stream / Marton WWTP (HRC data)  1. 8

Table 5: Ammonical nitrogen – Tutaenui Stream / Marton WWTP (MDC data) 1. 8

Table 6: scBOD5 results Tutaenui Stream/Marton WWTP  1. 8

1.   PERFORMANCE ASSESSMENT

 

Did I comply with the conditions of my consent?                                         No

2.   EXECUTIVE SUMMARY

 

The operation of the Rangitikei District Council (RDC) Marton Wastewater Treatment Plant (WWTP) is governed by resource consents 7312 and 7313. This report assesses how RDC has complied with this consent during the assessment period of 22 November 2012 to 26 March 2013. The assessment uses data collected by Horizons Regional Council (HRC) and RDC during this assessment period.

As a result of this assessment RDC has been given an overall significant non complying rating for consent 7312 and a complying rating for 7313

 

The significant non compliance occurred due to RDC failing to meet quality standards specified under condition 1(c), 1(e), 1(g) and 4. These conditions are related to horizontal visibility, ammoniacal nitrogen, E.coli and Macro invertebrate surveys. Given these non compliances are ongoing issues and related to environmental effects a significant non compliance rating has been issued.

 

The exceedences in ammoniacal nitrogen are considered to be significant as elevated concentrations are directly toxic to the aquatic environment.

 

3.   CONSENT DEADLINES

 

RDC are required to forward data into HRC in January, April, July and October each year. Please ensure that RDC continues to provide this information. Please note if a FTP was set up RDC would not have to worry about providing the raw data on these months as HRC would already have the information in an appropriate electronic format.

 

 

Through out the report additional information has been requested. Please provide the following information prior to 30 May 2013.

 

  • Macro-invertebrate report
  • Details of proposed upgrades
  • Proposed starting dates for upgrades

 

Although these consents do not require an annual report to be submitted it is recommended that RDC undertake an internal assessment of all of their consents annually. This assessment should provide comments on each of the consent conditions.

 

4.   SCOPE OF REPORT

 

This compliance report assesses compliance against resource consents 7312 and 7313. This assessment is based on information obtained through Horizon Regional Councils (HRC) and RDC sampling during the assessment period of 22 November 2012 to 26 March 2013.

 

5.   UP GRADES

 

Due to financial restraints RDC consulted with HRC consents team in relation to what upgrades needed to be prioritised. At the time that consultation took place the consenting team advised RDC to prioritise two other sites over the Marton WWTP upgrades. The upgrades at the Marton WWTP have been budgeted for and are due to occur in the 2013 -2014 financial year. The upgrades are designed to address the ongoing non compliances. Due to this consultation HRC will not be undertaking any further enforcement action despite the on going issues.

 

Prior to the upgrades commencing it is recommended that RDC contact HRC to discuss how the upgrades will progress.

 

Consent 7312 and 7313 expire on 31 March 2019. Therefore, the scheduled upgrades not only need to take the current conditions into consideration but the likely future conditions.

 

 

 

 

6.   CONDITIONS APPLICABLE TO PERMIT 7312

 

Receiving Water Quality

 

  1. The discharge shall not:

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

A site visit did not coincide with this assessment

Condition Compliance Status = Not assessed

b          cause any emission of objectionable odour; or

HRC has not received any odour complaints associated with the Marton WWTP during this assessment period.

Condition Compliance Status = Comply

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

The consent does not specify how this condition is to be assessed with any certainty. In the absence of any direct reference to a guideline the ANZECC stockwater guidelines have been used. These guidelines state the E. coli levels should remain below 100cfu/100ml to ensure the quality stockwater is not compromised. On this basis a non compliance has been given for the exceedences detected on 19 December 2012. On this occasion the E.coli concentration went from 287cfu/100ml to 1302cfu/100ml. Although exceedences of the guideline values were detected on other occasions they were not considered to be non compliances for one of the following reasons:

 

  • Concentration at the point of discharge at the time of sampling were significantly lower than the downstream concentrations;
  • Up stream concentrations at the time of sampling were higher than downstream concentrations;
  • Both of the above.

 

(see Table 1 for details)

 

 

Date Downstream Up Stream Change Discharge Compliance
19-Dec-12 1302 287 -1015 1379 No
10-Jan-13 319.2 474.8 155.6 103.6 Yes
14-Feb-13 1462 81 -1381 192 Yes
 7-Mar-2013 461 241 marginal

 

Condition Compliance Status = Non Comply

  1. 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.

 

There is insufficient evidence to assess this condition.

Condition Compliance Status = Not assessed

  1. 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

 

When black disc results are compared from this assessment period a significant change is detected (see Table 2 for details).

 

 

 

 

 

 

 

Date Downstream (m) Up Stream (m) Change % change Compliance
19-Dec-12 0.1 1.1 1 1000 No
14-Feb-13 0.1 2.5 2.4 2400 No

 

During this assessment period the average turbidity downstream of the discharge was 44.7 NTU compared to 1.4 NTU upstream of the WWTP discharge. On 7 March 2013 a sample could not be taken upstream of the discharge due to insufficient water. On this day the turbidity downstream of the discharge was 32.8 NTU which is above the limit of 20 NTU (see Table 3 for details).

 

Date Downstream (NTU) Up stream (NTU) Change (NTU)
19-Dec-12 44.7 1.24 43.46
10-Jan-13 33.6 1.32 32.28
14-Feb-13 55.7 1.68 54.02
 7-Mar-2013 32.8 No Water No Water
  Average 44.7 1.4 NA

 

As a result of the changes in horizontal visibility and exceedences in turbidity a significant non compliance has been given.

Condition Compliance Status = Significant non compliance

  1. cause a conspicuous change in colour, or

A site visit did not coincide with this assessment

Condition Compliance Status = Not assessed

  1. 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

During this assessment period the ammoniacal nitrogen concentrations were significantly higher than the equivalent upstream sample and the specified standards (see Table 4 and 5 for details).

Marton WWTP – Ammonical Nitrogen   HRC data
Date Down Stream Up Stream Increase Temperature Limit Compliance
19-Dec-12 0.123 0 0.123 23  2.8  Yes
10-Jan-13 0.004 0 0.004 21.1  2.8  Yes
14-Feb-13 5.66 0.006 5.654 20.6  2.8  No

 

Marton WWTP – Ammonical Nitrogen   RDC data
Date Down Stream Up Stream Increase Temperature Limit Comply
25-Oct- 2012 5.72 0.01 5.71 ?  Assumed to be 2.8 No
15-Nov-2012 5.94 0.02 5.92 ? Assumed to be 2.8 No
12-Dec-12 2.33 0.01 2.32 ? Assumed to be 2.8 Yes

Both RDC and HRC sampling detected ammoniacal nitrogen concentrations above 5g/m3. These concentrations have been shown to be directly toxic to aquatic life. As a result a significant non compliance has been issued.

Condition Compliance Status = Significant Non Comply 

  1. 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;

 

During this assessment period the scBOD5 concentrations have been displayed as less than. It is important that the accuracy of the test is at least less than 2 given the limit is 2. Based on the RDC results presented it is impossible to fully assess this condition as the accuracy was not sufficient on 12 December 2012. In the future if a scBOD5 concentration is greater than 2 regardless of a less than sign an exceedences will be assumed to have occurred.

Marton scBOD5
Date 2 Up Stream Limit Comply
25/10/2012 2 <1 2 Yes
15/11/2012 2 <1 2 Yes
12/12/2012 <6 <1 2 Marginal*

 

*<6 this reflects the level of accuracy achieved at the time of laboratory analysis. Please ensure that the laboratory is aware of the level of accuracy required (<2).

 

Condition Compliance Status = Comply – Needs attention

Monitoring and Reporting

  1. 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

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. 

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

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

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. Temperature is measured in the field at the time of sampling. As some of the standards are linked to temperature it is important that temperature at the time of sampling is entered into the spread sheets that are forwarded to HRC.

 

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.

 

Condition Compliance Status = Comply

  1. 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

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

Condition Compliance Status = Comply

  1. 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.

Consent 7312 was issued on 30 April 1998. Based on a survey being undertaken every three years a survey was due in 2012. HRC has not received a copy of this survey and therefore a non compliance has occurred.

 

If a survey has not occurred please ensure that one is completed in the 2013 – 2014 summer. If the survey has occurred please ensure that the resulting reported is forwarded to HRC prior to 30 May 2013.

 

It should be noted that the compliance report sent in February 2012 highlighted the need for the 2012 survey. For this reason a significant non compliance has been issued.

 

For future reference a survey needs to occur in 2015 and 2018 to ensure compliance with this condition. Please ensure that these surveys occur and the reports are forwarded to HRC within three months of the surveys being completed.

 

Condition Compliance Status =  Significant non comply

  1. 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.

Condition Compliance Status = Comply

 

 

 

THE OVERALL RATING FOR RESOURCE CONSENTS 7312 IS SIGNIFICANT NON COMPLIANCE

 

 

 

7.   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.

HRC have not received any odour complaints in relation to the Marton WWTP.

Condition Compliance Status = 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.

Please provide copies of the DO monitoring results prior to 30 May 2013.

Condition Compliance Status = Unable to assess

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 WWTP.

Condition Compliance Status = 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.

Condition Compliance Status = 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.

Based on conversations with RDC there have been no odour complaints during this assessment period.

Condition Compliance Status = Comply

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.

Condition Compliance Status = Comply

 

THE OVERALL RATING FOR RESOURCE CONSENTS 7313 IS COMPLIANCE

8.   OTHER MATTERS

 

This section discusses issues that do not directly relate to assessing compliance with the conditions of consent.

 

8.1  File Transfer Protocol

 

File Transfer Protocol (FTP) is a method to upload quality and flow data directly to the HRC database on a daily basis. One of HRC aims is to get all major discharges, of which the Marton WWTP is one, to forward flow data into HRC on a daily basis. Under a FTP process data from the RDC Scada system can be automatically transferred over to a HRC database on a daily frequency.

 

The benefits of a FTP process are two-fold. Firstly it will save MDC considerable time in providing information to HRC and secondly it will require less time for HRC to assess the date. Both outcomes will result in cost savings to both organisations. Consequently RDC are encouraged to look into the feasibility of entering into a FTP agreement with HRC.

 

However, if RDC enter into a FTP agreement with HRC, they are still responsible for assessing the data and reporting non compliances in accordance with the conditions of this resource consent.

 

9.   RECOMMENDATIONS

As a result of this compliance assessment the following is recommended:

 

Please provide details prior to 30 May 2013 of when the Marton WWTP is to be upgraded in the 2013-2014 financial year. If RDC know how they are going to address the high ammonia concentrations, visual clarity, E.coli concentrations please specify.

 

Given that the Macro-invertebrate survey was missed in 2012 RDC needs to undertake the survey in the 2013-2014 Summer.  Please note that after this survey has been undertaken the next required Macro-invertebrate survey will need to occur in 2015 regardless of when the survey that was suppose to be in 2012 is completed.

 

Please ensure when getting the samples analysed for scBOD5 that the accuracy of the test is at least <2. If a less than value is greater than 2 it will be assessed as non complying in the future.

 

 

 

10.                  CONCLUSION

RDC have received a significant non-compliance rating for the reporting period for resource consent 7312. This is primarily due to a failure to comply with conditions 1(c), 1(e), 1(g) and 4. These conditions are related to horizontal visibility, ammoniacal nitrogen, E.coli and Macro invertebrate surveys.

 

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

 

Yours Sincerely

 

 

 

 

Robert Rose

ENVIRONMENTAL COMPLIANCE OFFICER

 

 

 

 

 

 

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

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