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Annex 1: Activity Matrix

The activity matrix below describes offshore exploration, development and production activities and their potential effects. It also provides an indication of the policy or regulation applicable to the activity. Note that this activity matrix is intended as a guide only and is not exhaustive.

Category/Operation Activity Potential Adverse Effects Policy/Regulated
Seismic Operations
 

Temporary navigation restriction

Physical impact on marine life, wildlife and marine mammals

Temporary displacement of marine life, wildlife and marine mammals, or impact on communication and behaviours

MTA

Voluntary agreement

MMPA / WA

Platform Installation (Temporary)
Temporary deployment of Anchors /Jack-up Rig

Physical disturbance on seabed

Introduction of exotic invasive marine species

Displacement of marine life, wildlife and marine mammals

IHS for ballast water
Temporary Drill Rig Introduction of exotic organisms via hull fouling/ballast water

IHS for ballast water; BA

Voluntary codes for hull fouling

Platform Installation (Permanent)

Fixed Permanent Installation eg Jacket, CGS

Physical disturbance of seabed

Acoustic disturbance of marine life, wildlife and marine mammals

Displacement of marine life, wildlife and marine mammals

MED; Maritime NZ; MTA; SCPPA; MARPOL
Floating Permanent Installation eg FPSO, FSO, TLP etc Introduction of exotic organisms via hull fouling / ballast water

MED; Maritime NZ; MTA; SCPPA; MARPOL

IHS for ballast water

Voluntary codes for hull fouling

Drilling
Physical Impact

Underwater noise

Displacement of marine life, wildlife and marine mammals

Local physical damage

MMPA
Discharge of Drilling Cuttings

Accumulation of contaminated material

Smothering of Benthos

Physical obstruction

Turbidity

Maritime NZ
Discharge of drilling fluids

Toxicity

Turbidity

MTA
Discharge to water (Operational)
Produced water

Toxicity

Floating oil

MTA
Cooling Water

Thermal

Toxicity

Organic waste

Pathogens

Turbidity

Discharge to water (Accidental)
Oil Spills

Marine life, wild life and marine mammals

Physical/shoreline/amenity

Economic

Toxicity

MTA; RMA
Chemical Spills

Marine life, wild life and marine mammals

Toxicity

MTA
Discharge to Air
Flaring

Climate change

Possible attractant to sea birds

MFE

CM(P)R; WA

GHG Emission (non flaring) Climate Change MFE
Plant & Machinery emissions   None
Tank Venting Climate Change MFE
Presence of Structure
Exclusive occupation of platform footprint Access restrictions None
Exclusion zones   CSA; MTA; TSEEZA
Restricted Areas/Protection Zones   SCPPA; MTA
Security   Police; Military
Operation and Maintenance
 

Noise

Light

Handling of hazardous materials

MMPA; WA; MTA; HSNO; HASIE
Waste Management

Food waste

  MTA
Garbage  
Commercial Waste  
Ancillary Operations
Helicopters   Civil Aviation
Support Vessels Introduction of exotic organisms via hull fouling/ballast water

MARPOL; IMO; OPRC; MTA; BA

IHS for ballast water

Voluntary codes for hull fouling

At Sea Disposal
Ancillary structures and Platform Abandonment   MTA