Contact Us

Petrochemical, Environmental & Hydraulic Engineering Consultants
ABN 11 153 120 962

P.O. Box 1045
Hunters Hill, NSW 2110

P.O. Box 3389
Merewether, NSW 2291


Phone_Icon Mobile 0402 497 287

NSW Service Area

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Monitoring Well Installation & Testing

Any petrochemical storage site (not just service stations) which has an Underground Storage Tank must have Groundwater Monitoring Wells installed and monitored by 01 June 2011, as required by New South Wales EPA.

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Groundwater Monitoring Wells are located outside of the tank excavation and enable sampling of ground water in areas with permeable soil, where the water table is below the level of the bottom of the petrochemical tanks on site, but within six metres of the surface.

The person responsible for a UPSS (usually the owner/operator) is required to have in place per
NSW EPA UPSS regulations:

  • a system for detecting and monitoring leaks;
  • groundwater monitoring wells at sensitive locations and a program to test them;
  • an Environment Protection Plan for the facility;
  • systems in place for record keeping, reporting of leaks and notifying the local council when a UPSS is decommissioned.

Borehole Inspections & Assessment

During borehole inspections and assessments, data can be collected by means of remote downhole tools such as imaging cameras, magnetic thickness tools, to determine the overall health of the borehole.
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Reports are then generated from systematic data obtained using borehole inspection tools, and then summarised for use by Program Managers to see if remedial actions or well abandonment are required.

Our systematic borehole inspection and assessment approach enables Program Managers to manage and mitigate business risks. Our reports will prioritise their program for operational controls in terms of compliance, risk, environmental and health and safety regulatory requirements.

Borehole Decommissioning & Plugging

Plugging of abandoned water, oil and gas wells, and seismic holes is a viable option once we have completed our site inspection, prioritisation and risk ranking process.
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New South Wales (NSW) wells are abandoned in accordance with the following:
  • State Regulation: NSW Onshore Petroleum Exploration and Production Safety Requirements, August 1992; and NSW Water Management Act 2000 / Water Act 1912
  • Environmental guidelines: Petroleum Licence conditions and Review of Environmental Factors, REF’s for each site under Part 5 of the petroleum act (when in the E&A phase);
  • NSW Well Integrity Code of Practice (currently under review with government chief scientists);
  • Industry best practice and guidelines, example: API Recommended Practice

Actual plugging of abandoned water, oil and gas wells, and seismic holes, protecting the subsurface aquifer and making the site safe.
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Plugging wells to prevent any remaining oil that may be in the wells from reaching nearby lakes, rivers and streams.

Deteriorating boreholes or wells can get to the point at which crude oil could leak from broken well casings, pipes and storage tanks.