sewage treatment plant contingency management manual blackmans bay sewage... · normal operations,...

Sewage treatment plant Contingency Management Manual

Issue date: 20 October 2015 Document no: IEM-MAN13Uncontrolled when printed

of 4 Version no: 0.1

The Contingency Management Manual (CMM):

• Aims to address Condition OP3 of the site Environment Protection Notice (EPN)

• Provide quick reference of how to respond in case of unplanned events, not covered by normal operations, that have the potential to impact beyond the normal sewage treatment plant (STP) operating boundaries.

Note: for unplanned events associated with STP operations, refer to the Operations and Maintenance Manual.

Purpose

How to use the document

Issue date: 20 October 2015 Document no: IEM-MAN13 Uncontrolled when printed


Inci

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Types of incidents and response cards

Unplanned events have the potential to affect STP operations and cause incidents beyond the site operational boundaries. Incidents addressed by the CMM site response procedures include:

• IEM-PRO03 – Excessive wet weather e.g. maintenance hole overflow (for Mechanical STPs)

• IEM-PRO04 – Excessive wet weather (for Lagoons STPs)

• IEM-PRO05 – Flood e.g. nearby river flooding (for all STPs)

• IEM-PRO06 – Spill to water e.g. lagoon spill into estuary (for all STPs)

• IEM-PRO07 – Spill to land e.g. lagoon spill onto adjacent oval (for all STPs)

• IEM-PRO08 – Power failure e.g. storm causes 24 hour outage (for Mechanical STPs)

• IEM-PRO09 – Power failure (for Lagoon STPs)

• IEM-PRO10 – Fire e.g. bushfire causes power outage (for all STPs)

• IEM-PRO11 – Odour e.g. neighbour complains of odour (for all STPs)

• IEM-PRO12 – Noise e.g. complaints about excessive noise (for all STPs)

• IEM-PRO13 – Loss of disinfection e.g. disinfection failure (for relevant STPs)

• IEM-PRO14 – Blue green algae (BGA) e.g. cyanobacteria >5,000 cells/mL Note: only for lagoon systems.

One of the above listed response procedures and/or IEMP response procedure may be referred to during an incident. These cards should be kept on site.

Operational failures: refer to the Operation and Maintenance Manual contingency management sections.



First responder/operator

1. Respond to prevent or control the incident. Refer to site card and appropriate site response cards

2. Assess the situation to determine the incident level or potential level

• Pre-incident Alert level: information has been received indicating an incident is imminent or may occur in the near future

• Incident Level 1: where local work teams operate under normal supervision with some additional managerial and localised support. The response team can effectively cope with minor effect on TasWater, its customers and the community

• Incident Level 2: can be controlled at the site level by an onsite commander, but may need additional resourcing; and/or multiple incidents that impact TasWater; and/or emergency services are required; and/or regulatory authorities give directions; and/or the actual or potential impact on TasWater, its customers, the community and the environment is more widespread

• Incident Level 3: requires external agency to be the response management agency and will require activation of the Strategic Recovery Team to manage the broad range of corporate and strategic issues that may emerge from the event and is not addressed directly by the CMM.

3. Notify the coordinator.

Coordinator (Level 5)

4. Assess: review the situation to confirm the incident level or potential level (Alert or Level 1, 2 or 3)

5. Notify: the managers (Level 4 and Level 3) as per CMM site response cards

6. Command and control: set objectives and develop strategies and use them to instruct operators and first responders to prevent further impact and control the incident

7. Manage and recover: to reduce impact when possible

8. Improve: undertake post-incident investigation, report and recommend improvement actions.

Responsibilities

Trim Record No. 15/203269 Document No: IEM-PRO03 Page 1 of 2

Issue Date: 16/10/2015 Uncontrolled when printed Version No: 0.1

Excessive Wet Weather - Mechanical STP Response Procedure

Excessive Wet Weather (Bypass) Mechanical STP Response Procedure

ALERT – IRIS EVENT First Responder (Operator) Coordinator (L5)

Definition Hazard has been identified from issues/observations opportunities for

improvement/ non-optimal performance. Incorporate into regular reporting – WATCHING BRIEF

Assess Refer to Site Information Sheet for maximum inflow OR if flow alarm for STP bypass sounds OR overflow.

Notify � Notify Coordinator L5 � Notify L4 Manager

Respond See over the page

MINOR INCIDENT First Responder (Operator) Coordinator (L5) and L4 Manager

Definition Impact on any of the following: Licence Performance, Public Health, The

Environment

Assess Refer to Site Information Sheet for maximum inflow.

Notify � Notify the Coordinator L5

ASAP

� Notify L4 Manager

L4 Manager to:

� Advise L3 Manager

� Notify EPA 1800 005 171

� Notify EHO, refer to Site Info Sheet


MAJOR INCIDENT First Responder (Operator) Coordinator (L5) and L4 Manager

Definition Significant impact on any of the following: Licence Performance, Public Health, The Environment and/or has the potential to activate Incident

Level 3 – Emergency and offsite coordination

Assess High levels of bypass likely to result in uncontrolled discharge. Discharges of volumes / strengths significantly greater than license conditions. Refer to Site Info Sheet for discharge volumes.

Notify

� Notify Coordinator L5 ASAP

� Notify L4 Manager ASAP

L4 Manager to:

� Notify EPA 1800 005 171


� Advise L3 Manager and Incident Controller and Communications Group.

Respond See over page



Excessive Wet Weather - Mechanical STP Response Procedure


Respond

� Check inlet screens and clear if necessary.

� Check for overflow at upstream maintenance holes and clear if necessary.

� Visually monitor bypass at inlet tank. If bypass is going to overflow escalate incident to Moderate.

� Investigate issue and adjust operation if necessary.

� Refer to Site Info Sheet for O&M SOP.

� Review plant performance and operational parameters.

� Log incident in IRIS.

MINOR INCIDENT First Responder (Operator) Coordinator (L5)

Respond

� Check inlet screens and clear if necessary.

� Check for overflow at upstream maintenance holes and clear if necessary.

� Visually monitor bypass at inlet tank to determine when sampling, due to overflow, is required.

� Assess other possible influences (nearest pump stations, inlet, weather, operational issues).

� Refer to Site Info Sheet for O&M SOP.


� Assess possible public health or environmental threat.

� Refer to IEMP Steps 1 to 3.

� Conduct emergency sampling as per license or EPA / DHHS / EHO instruction, if bypass is discharging to river.

� Refer to Part 4 IEMP.

� Refer to IEMP Steps 2 to 6 as appropriate.


MAJOR INCIDENT First Responder (Operator) Coordinator (L5)

Respond

� Assess other possible influences (inlet, weather, operation) to determine if overflow can be stopped.

� Check for overflow at upstream maintenance holes and clear if safe.


� Monitor tank levels. If increasing refer to O&M.

� Assess possible public health or environmental threat.


� Conduct emergency sampling as per license or EPA / DHHS / EHO instruction.

� Refer to Sewer Overflow Spill Response Procedure (IEMP Part 3).

� Refer to IEMP Part 4 and Steps 2 to 6 as appropriate.




Flood STP Response Procedure

Flood (Note: if threat from nearby river)

STP Response Procedure




Assess Small localised flood not exceeding boundary of building or land and not contaminated with sewage.





Environment.

Assess Localised flooding contaminated with sewage but contained within the boundary of the plant.


ASAP


L4 Manager to:


� Contact SES 132 500.

� Notify EHO, re. nearby rec water users and neighbours, refer to Site Info Sheet.





Assess Causing major flooding of plant; floodwater contamination; and spill of contaminated floodwater from property.

Notify



L4 Manager to:


� Contact SES 132 500.

� Notify EHO, re. nearby rec water users and neighbours, refer to Site Information Sheet.




Flood STP Response Procedure


Respond

� Channel water away from STP and divert as much flow as possible.

� Identify obstacles to drainage and remove if possible.



Respond

� Channel water away from STP if possible.

� Identify obstacles to drainage and remove if possible.

� Monitor situation and infrastructure integrity.


� Organise sampling through laboratory as required by license, EPA or EHO.

� Refer to IEMP Steps 2 to 6 and Parts 2 to 4 as appropriate.



Respond � Monitor situation.

� Evacuate as necessary.


� Prepare plant for potential partial or full shut down.

� Refer to Flood Response Procedure (IEMP Part 3).

� Refer to Stakeholder and Communications Support Plan (IEMP Part 4).

� Organise sampling through laboratory as required by license, EPA or EHO.



Trim Record No. 15/203285 Document No: IEM-PRO06 Page 1 of 2Issue Date: 16/10/2015 Uncontrolled when printed Version No: 0.1

Spill to Water STP Response Procedure

Spill to WaterSTP Response Procedure


DefinitionHazard has been identified from issues/observations opportunities for

improvement/ non-optimal performance. Incorporate into regularreporting – WATCHING BRIEF

Assess Spills estimated at less than 1,000 Litres of untreated or partially treatedsewage. Deemed NOT to cause environmental nuisance.

Notify Notify Coordinator L5 Notify L4 Manager



Definition Impact on any of the following: Licence Performance, Public Health, TheEnvironment

Assess Spills estimated at greater than 1,000 Litres of untreated or partiallytreated sewage OR spills deemed to cause environmental nuisance.

Notify Notify the Coordinator L5ASAP

Notify L4 Manager

L4 Manager to:

Advise L3 ManagerNotify EPA 1800 005 171Notify EHO, re recreationalwater users, refer to SiteInformation Sheet.


MAJOR INCIDENT First Responder (Operator) Coordinator (L5)Definition Significant impact on any of the following: Licence Performance, Public

Health, The Environment and/or has the potential to activate IncidentLevel 3 – Emergency and offsite coordination

Assess Spills greater than 10,000 Litres untreated or partially treated sewageOR spills deemed to cause environmental harm.

Notify

Notify Coordinator L5ASAP

Notify L4 Manager ASAP

L4 Manager to:

Notify EPA 1800 005 171Notify EHO, re recreationalwater users, refer to SiteInformation Sheet.Advise L3 Manager and IncidentController and CommunicationsGroup.


Trim Record No. 15/203285 Document No: IEM-PRO06 Page 2 of 2Issue Date: 16/10/2015 Uncontrolled when printed Version No: 0.1

Spill to Water STP Response Procedure


Respond

Note spill location / volume /strength / time of overflow.If blockage is causingoverflow, remove blockageif safe to do so.Capture and return spillusing spill kit or pump trucksas appropriate. Refer to SiteInfo Sheet.Clean-up spill site wherepossible.

Log incident in IRIS.


Respond

Note spill location / volume /strength / time of overflow.Post warning signage, ifrequired.If blockage is causingoverflow, remove blockageif safe to do so.Capture and return spillusing spill kit or pump trucksas appropriate. Refer to SiteInfo Sheet.Clean-up spill site wherepossible.Refer to IEMP Steps 1 to 3.

Organise sampling throughlaboratory as required bylicense, EPA or EHO. Refer toSite Info Sheet. (Project code inSTARS).Refer to IEMP Steps 2 to 6 andParts 2 to 4 as appropriate.Log incident in IRIS.


Respond

Stop the source if possibleusing bypass or stop valvesor isolating pumps.Note spill location / volume /strength / time of overflow.Post warning signage ifrequired.Capture and return spillusing spill kit or pump trucksas appropriate. Refer to SiteInfo Sheet.Clean-up spill site wherepossible.Refer to IEMP Steps 1 to 3.

Organise sampling throughlaboratory as required bylicense, EPA or EHO.Organise repairs if necessary.Refer to Sewer Overflow SpillResponse Procedure (IEMPPart 3).Refer to Stakeholder andCommunications SupportPlan (IEMP Part 4).Refer to IEMP Steps 2 to 6 andParts 2 to 4 as appropriate.Log incident in IRIS.



Spill to Land STP Response Procedure





Assess Spills estimated at less than 1,000 Litres of untreated or partially treated sewage and contained on STP land and deemed NOT to cause environmental nuisance, e.g. blocked inlet screen.





Environment

Assess Spills estimated at greater than 1,000 Litres of untreated or partially treated sewage OR spills less than 1,000 Litres discharging to neighbouring land and deemed to cause environmental nuisance.

Notify � Notify the Coordinator

L5 ASAP


L4 Manager to:

� Advise L3 Manager.

� Notify EPA 1800 005 171


� Contact DHHS 1800 671 738

� Contact impacted landowners, refer to Site Info Sheet.





Assess Spills greater than 1,000 Litres of untreated or partially treated sewage and discharging to either STP or neighbouring land and deemed to cause environmental nuisance or serious environmental harm.

Notify � Notify Coordinator L5

ASAP


L4 Manager to:

� Advise L3 Manager and Incident Controller & Communications.

� Notify EPA 1800 005 171


� Contact DHHS 1800 671 738

� Contact impacted landowners, refer to Site Info Sheet.






Respond

� Note spill location / volume / strength / time of overflow.

� Capture and return spill using spill kit or pump trucks as appropriate. Refer to Site Info Sheet.

� Barricade area off with appropriate signage.

� Clean-up spill site where possible.



Respond





� Monitor until disinfection procedure completed.


� Organise sampling through laboratory if required by EHO. Refer to Site Info Sheet.




Respond

� Identify and utilise bypass stop valves, isolating pumps or other interventions.





� Monitor until disinfection procedure completed.


� Organise sampling through laboratory if required by EHO. Refer to Site Info Sheet.

� Organise repair or replacements.

� Refer to Sewer Overflow Spill Response Procedure (IEMP Part 3) as appropriate.





Power Failure - Lagoon STP Response Procedure

Power Failure Lagoon STP Response Procedure




Assess Less than 4 hours





Environment

Assess Greater than 4 hours

Notify � Notify the Coordinator

L5 ASAP


L4 Manager to:






Assess Extended hours – Greater than 24 hours.

Notify

� Notify Coordinator L5


L4 Manager to:

� Advise L3 Manager and Incident Controller and Communications Group

� Notify EPA by email.

� Contact DHHS 1800 671 738 and EHO (refer to Site Info Sheet) if samples have toxins ≥ alert levels.




Power Failure - Lagoon STP Response Procedure


Respond

� Contact Tas Networks on 13 2004 for predicted length of power outage.

� Call TasWater Electrical team (BH) or on-call electrician (AH) to get a suitable mobile generator on site OR run plant in lagoon-only mode. Refer to Site Info Sheet.

� Check for overflow at upstream maintenance hole(s).

� Assess possible public health and environmental threats.

� Log in IRIS


Respond

� Call TasWater Electrical team or on-call electrician for suitable mobile generator (refer to Site Info Sheet) OR run plant in lagoon-only mode.


� Review plant performance and operational parameters. Refer to O&M manual.



� Ring TasNetworks 13 2004 every hour for updates.

� Organise effluent sampling and analysis through laboratory, if required.

� Ring Coats Hire to hire of diesel generator if necessary.


� Refer to IEMP Part 4.


Respond

� Call TasWater Electrical team or on-call electrician for suitable mobile generator (refer to Site Info Sheet) OR run in lagoon-only mode.

� Call pump trucks to transport to other available plant if power outage is lengthy.


� Review plant performance and operational parameters. Refer to O&M manual.



� Ring Coats Hire to hire of diesel generator if necessary.

� Prepare plant for potential partial or full shut down.

� Ring TasNetworks 13 2004 every hour for updates.

� Organise effluent sampling and analysis through laboratory, if required.


� Refer to IEMP Part 4.



Fire STP Response Procedure



Definition

NO ALERT/MINOR FIRE EVENTS Assess

Notify

Respond



Environment

Assess Where fire is small contained and extinguished by staff on site OR fire on surrounding land that may be potential threat to the STP.

Notify

� Notify the Coordinator L5 ASAP

� Call Tas Fire Service 000 if necessary.


L4 Manager to:

� Advise L3 Manager.

� Report to Insurance Officer as required





Assess Where fire is uncontained and not extinguished by staff on site OR fire on surrounding land and a threat to the STP.

Notify


� Call Tas Fire Service 000.


L4 Manager to:


� Notify EPA: 1800 005 171 if plant shut down occurs.

� Report to Insurance Officer as required






Respond

� Activate fire evacuation and response plan. Consider evacuation.

� Monitor and observe.


� Activate Infrastructure Fire Response Procedure (IEMP Part 3) if appropriate

� Activate Bushfire Response Procedure (IEMP Part 3) if appropriate.


� Report to Insurance Officer as required.

� Report in IRIS.


Respond � Activate fire evacuation and

response plan.

� Monitor and observe.

� Activate Infrastructure Fire Response Procedure (IEMP Part 3) if appropriate.

� Activate Bushfire Response Procedure (IEMP Part 3) if appropriate.


� Report to Insurance Officer as required.

� Report in IRIS including: list of affected services; arrangements for repairs/replacements; and advise if plant will be out of service for more than 24 hours.



Odour STP Response Procedure

Odour STP Response Procedure




Assess Localised odour within plant boundaries.





Environment

Assess Localised impact beyond boundary of the land OR odour complaints from one or more sources for one event.


ASAP

� Notify L4 Manager who will

L4 Manager to:


� Contact complainant to ensure problem is rectified.

� Notify EPA 1800 005 171

� Refer to Site Info Sheet and IEMP Part 4.





Assess Large scale or long term (greater than 1 day) odour issues.

Notify � Notify Coordinator L5

ASAP


L4 Manager to:


� Notify EPA 1800 005 171




Odour SPT Response Procedure


Respond

� Identify source.

� Check process and adjust where necessary, if possible.

� Refer to Site Info Sheet for relevant O&M SOPs.

� Rectify and communicate to Coordinator.

� Log in daily log sheet.



Respond


� Check process, refer to O&M Manual and adjust where necessary, if possible.





� Contact complainant to ensure problem is rectified.




Respond












Noise STP Response Procedure





Assess

Loud noise within the boundary of the STP, i.e. Noise less than:

� 50dB between 8am and 6pm (daytime) � 45dB between 6pm and 10 pm (evening) � 40dB between 10pm and 8am (night time)





Environment

Assess Noise greater than specified limits (see above).

One or more complaints received over an extended period (2 days).


ASAP


L4 Manager to:


� Communicate with complainant(s).

� Notify EPA: 1800 005 171





Assess High level noise or ongoing continuous noise incident.

Multiple complaints received over an extended period (2 days).

Notify



L4 Manager to:


� Communicate with complainant(s).

� Notify EPA: 1800 005 171






Respond






Respond





� Organise noise testing if not able to fix issue immediately.




Respond

� Major investigation into source.

� Check process, refer to O&M manual and adjust where necessary, if possible.

� Specify source sound damping mitigation, if practical.

� Rectify where possible.



� Organise noise testing ASAP.





Loss of Disinfection STP Response Procedure





Assess Thermotolerant coliforms (TC) greater than permit levels of 200 cfu/100ml but less than 1000 cfu/100 ml in freshwater environment.





Environment

Assess Thermotolerant coliforms (TC) greater than 1,000 cfu/100ml but less than 10,000 cfu/100mL.


ASAP


L4 Manager to:


� Notify EPA 1800 005 171

� Notify EHO refer to Site Info Sheet

� Notify Manager Wastewater and Environment: 6345 6371





Assess Thermotolerant coliforms (TC) greater than 10,000 cfu/100ml.

Notify



L4 Manager to:


� Notify EPA: 1800 005 171

� Notify Manager Wastewater and Environment: 6345 6371






Respond

� Check TC limit on Site Info Sheet.

� Check disinfection and record potential reason for non-compliance in daily flow log if effluent is discharging to the environment.

� Note volumes / strengths / time of discharge.

� Log any changes to plant operations on the daily flow sheet.

� Check processes.

� Perform on site tests where available.

� Identify and treat source contributing to the loss of disinfection ASAP.



Respond


� Check disinfection and record potential reason for non-compliance in daily flow log if effluent is discharging to environment.



� Check processes, and identify and treat source contributing to the loss of disinfection ASAP. Refer to Site Info Sheet for O&M references.

� Check filters and dosing system for blockages. Check and clean UV reactor if necessary. Check lamps. Adjust set points and test.


� Monitor until compliant

� Refer to Loss of Disinfection Response Procedure (IEMP Part 3) as appropriate.




Respond


� Discharge effluent to the environment until retest confirms issue resolved. May bypass tertiary treatment for repair.


� Check processes, and identify and treat source contributing to the loss of disinfection ASAP.



� Monitor until compliant

� Refer to Loss of Disinfection Response Procedure (IEMP Part 3) as appropriate. Refer to IEMP Stakeholder and Communications Support Plan (Part 4) as appropriate.



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