Phase I Surveys for Oil Spills and Leaks

Assessment of a spill site can be both technically complex and sensitive, particularly in domestic situations. Effective communication between all parties is essential as is regard for the requirements of the insured and insurer.

Ground assessment can be technically challenging. The requirement for a thorough assessment has to be balanced against cost, time and disruption. An incomplete investigation can result in potential migration pathways being missed and an inaccurate remediation cost being obtained.

Our Phase I investigations conform to current best practice and follow a standardised approach. Following an insurance claim, a Phase I survey includes a site visit (walkover) and gathering of background information.

A survey for a domestic oil spill typically includes:

• Visual on-site assessment
• Vapour survey
• Photographic evidence of contamination in and around the affected area
• Interview with property owners/occupants to establish events prior to the spillage and the volume of oil lost
• Assessment of whether emergency procedures are required to contain the spillage

A report is prepared outlining:

• Suggested course of action
• Potential environmental and human health risks arising from the spillage
• Requirements for further investigation or remediation

In the event that an emergency response is required to avoid further migration of contamination, Ecologia immediately contacts the client to discuss necessary action.

Phase II Surveys

Our Phase II surveys are managed and supervised only by experienced environmental personnel, who work in communication with our in-house drilling team to ensure a well co-ordinated service.

A survey following an accidental spill of domestic heating oil typically consists of:

• Drilling of four to eight bore-holes
• Collection of soil and groundwater samples for chemical analysis
• Measurement of hydrocarbon vapours in boreholes and inside the residential property
• Reinstatement of the sampled areas
• Despatch of samples to a UKAS/MCERTS accredited contract laboratory for analysis.

On completion of the survey, we produce a comprehensive report, including:

• Desk study of the affected area, including a wide range of key data
• Comparison of the contamination level measured to national standard guidelines
• Presentation of soil/groundwater contamination in table and/or 2D or 3D mapping format
• Environmental and human health risk assessment using Environment Agency protocols
• Suggested remedial action (if necessary).

Where remedial action is required, a separate cost proposal is sent to the client.