Horizons’ Compliance Reports for the RDC’s Leachate Disposal

 

 Compliance Reports  (Mar 05-Mar 08)

1. March and April 2005    NON COMPLIANCE
Rangitikei District Council (Marton)
Private Bag 1102
MARTON
Location: MAKIRIKIRI ROAD CROFTON Dairy No:
Performance Assessment: Did I comply with the conditions of my consent? Not EntirelyThank you for the self monitoring data for March and April 2005.Results for show significant increases downstream of the discharge in almost all of the parameters tested for. The discharge seems to dilute the amount of faecal coliforms though.The downstream result of ammonia from the sample collected in April indicates that this parameter breached condition 1 (g). The water temperature of the Tutaenui Stream is not given though to confirm this.
Suggested Actions:Please continue to monitor and report on results in the months of July, October, January, and April each year.
Inspection details:
Officer: Peter Thomas KerrInspection type: Clients report/letterConsent no: 7312 Inspection time: 20/05/2005 16:44Cost of inspection (excl. GST): $33.50Consent type: Discharge Permit
Accompanying this report is: your invoice

2. Aug & Sep 2005   NON COMPLIANCE

Rangitikei District Council (Marton)
Private Bag 1102
MARTON
Location:  MAKIRIKIRI ROAD CROFTON Dairy No:
Performance Assessment: Did I comply with the conditions of my consent? No Thank you for the self-monitoring data for July, August and September 2005.Results for September show an increase downstream of the discharge for ammoniacal nitrogen and CBOD5. The downstream result of ammonia significantly breached condition 1 (g) irrespective of the water temperature at the time of sampling.

 

Suggested Actions: Please investigate the reason for this non-compliance.
Inspection details:
Officer: Alison RussellInspection type: Clients report/letterConsent no: 7312 Inspection time: 28/10/2005 13:00Cost of inspection (excl. GST): $35.50Consent type: Discharge Permit
Accompanying this report is: your invoice

3. October 2005    NON COMPLIANCE

Rangitikei District Council (Marton)
Private Bag 1102
MARTON
Location:  MAKIRIKIRI ROAD CROFTON Dairy No:
Performance Assessment: Did I comply with the conditions of my consent? No Thank you for the self-monitoring data for July, August and September 2005.Results for September show an increase downstream of the discharge for ammoniacal nitrogen and CBOD5. The downstream result of ammonia significantly breached condition 1 (g) irrespective of the water temperature at the time of sampling.

 

Suggested Actions: Please investigate the reason for this non-compliance.
Inspection details:
Officer: Alison RussellInspection type: Clients report/letterConsent no: 7312 Inspection time: 28/10/2005 13:00Cost of inspection (excl. GST): $35.50Consent type: Discharge Permit
Accompanying this report is: your invoice

4. October 2006      NON COMPLIANCE

Rangitikei District Council (Marton)
Private Bag 1102
MARTON
Location: MAKIRIKIRI ROAD CROFTON Dairy No:
Performance Assessment: Did I comply with the conditions of my consent? NoThank you for the monitoring results that were received on the 16 October 2006 for the September result. Results show that the consent limits for ammonia nitrogen and dissolved carbonacous BOD5 exceed quality parameter limits.As discussed with you on the Please note consents conditions in part state that:”1.      The discharge shall not::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

15°C, or 2.8.grams per cubic metre at water temperatures greater than

15° C; or

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;

in the Tutaenui Stream at or beyond the point 500 metres downstream of the outfall, regardless of stream flow levels.

 

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

carbonaccous BOD5, suspended solids, faecal coliforms, dissolved

reactive phosphorus and 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”

Suggested Actions:As discussed, consent conditions require extra sampling to be carried out. As the following months results showed compliance with consent conditions no action was undertaken.I have discussed this non-compliance with our Water Quality Scientist who stated that as there is a delay in getting results; investigate whether there was there anything specific that could be identified as a possible cause. This will ensure that if this event occurs again the likelihood of breaching the consent conditions are high as can commence monitoring over a 24 hour period. It will also be of benefit to advise the laboratory of your consent limits.If you have any questions I can be contacted on 021 22 77 116 or via e-mail alison.russell@horizons.govt.nzRegardsAlison Russell
Inspection details:
Officer: Alison Russell
Kathryn Jane McArthurInspection type: Clients report/letterConsent no: 7312
Inspection time: 16/10/2006 13:00Cost of inspection (excl. GST): $163.50Consent type: Discharge Permit
Accompanying this report is: your invoice

5. Review   SIGNIFICANT NON COMPLIANCE

Rangitikei District Council (Marton)
Private Bag 1102
MARTON 4741
Location: MAKIRIKIRI ROAD CROFTON File                         5/8/RDCConsent No.           7312
Performance Assessment: Did I comply with the conditions of my consent? NoThank your for sending the results of your monitoring of the waste water treatment plant discharge.  This report assesses them against your current consent conditions.Please find detailed below your relevant consent conditions along with your compliance status against these conditions.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

b        cause any emission of objectionable odour; or

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

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

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

f.        cause a conspicuous change in colour, or

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

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;

in the Tutaenui Stream at or beyond the point 500 metres downstream of the outfall, regardless of stream flow levels.

NON COMPLIANT – In the period between July 2007 and March 2008 there were 4 samples taken from downstream of the discharge that exceeded the above ammonical N limits.  They were all significant exceedances, ranging between 4.68 g/m3 and 14.5g/m3.  Ammonical N levels of this magintude will have had significant effect on aquatic life.  Additionally the downstream samples from November and December 2007 had dissolved CBOD5 concentrations of 3 g/m3, this is also in excess of the limits specified above.

 

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 carbonaccous 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.

NON COMPLIANT – There is no evidence that composite sampling has been done despite the ammonical N and CBOD readings exceeding the limits set.  The ammonical N exceedances have happened before at similar times of year and the requirement for composite sampling has been highlighted in previous reports.  Please continue to report the results every 3 months.

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.

COMPLIANT – Please continue to report them every 3 months, please ensure that temperature measurements are provided with the sample results.

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.

MARGINAL – The last report that we have on our files is from 2002, please forward copies of the more recent reports to us.

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.

NON-COMPLIANT – There have been breaches but we have not been informed of them. 

Review

6.       The Manawatu Wanganui Regional Council may under section 128 of the Act, initiate a review of Condition 1

a.       during 2004, for the purpose of reviewing the performance of the existing treatment system up until that time, and to ensure that the best practicable option is adopted by the Consent Holder in relation to the operation of that existing treatment process to prevent or minimise adverse effects on the receiving waters;

b.       during 2011, for the purpose of addressing any requirements of an operative Regional Plan that relates specifically to the receiving waters affected by the discharge and, if appropriate, to deal with such effects by way of further or amended conditions.

FOR INFORMATION

Suggested Actions:At the time of the inspection it was noted that the inlet screens appeared to have been removed.  Adrian later confirmed that this was the case, there had been a breakdown and the screens had needed to be removed.  Replacement parts are on order but they are not due for approximately 3 months.  Alternative screening was trialled, but this quickly blocked and was removed to minimise the risk of overflow.There was also effluent bypassing the tertiary treatment plant.  Adrian confirmed that the valve that was releasing effluent to the discharge channel was there to allow the pond level to be lowered to prevent the pond overflowing during periods of high inflow.  At the time of the inspection the pond did not appear to be full and there appeared little risk of any imminent overflow.  Adrian was going to investigate what causes the valve to open.  Please report to us what triggers the valve to open and why effluent was bypassing the tertiary treatment on 10 July 2008.  I note that there have been previous non compliances with the water quality in the stream and wonder if there have been previous bypasses and whether these have contributed.  While we were on site we took samples from the stream and the discharge.Please forward the sample results to us as every 3 months.  The breaches of the ammonia limits in September 2007, November 2007, December 2007 and March 2008 are significant non compliances.  Ammonia is toxic to aquatic life and the concentrations of ammonical N in the stream will have had a significant detrimental effect on aquatic life.Please investigate the reasons for the breaches of the consent conditions and implement procedures to prevent recurrences.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 CookeInspection type: RoutineConsent no: 7312 Inspection time: 10/07/2008 14:00Cost of inspection (excl. GST): $1200.00Consent type: Discharge Permit
Accompanying this report is: your invoice

 

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