Waste Recovery: Orsett Quarry

Case Study

Ingrebourne Vallery Ltd asked us to collate and presented salient environmental information to prepare for future mineral extraction, landfilling and land restoration across three neighbouring parcels of land.

 

The area included three discrete sites with a combined land holding of around 95 hectares:

 

Orsett Quarry

A dormant sand and gravel quarry, it benefits from ROMP planning consent and is in the local minerals plan. Ecological surveys have identified notable, scarce and protected plant, faunal and animal species within the main Orsett Quarry void, resulting in the site being identified as of high ecological value at a county level.
Client’s objectives: to work the remaining mineral reserves and restore the quarry void by inert landfilling (subject to Environmental Permit approval). Although the client could commence working of the quarry immediately, there was a requirement to protect certain species present within the void space. The favoured option was to move relevant species to a suitable receptor habitat (i.e., the neighbouring Ecological Park).

 

Walton’s Hall Farm

An unworked sand and gravel reserve containing around 1.5 million tonnes of virgin material.

Client’s objectives: to progressively work the area (subject to planning consent) and restore it back to agricultural use using inert fill (subject to Environmental Permit approval).

 

Orsett Quarry Ecological Park

Part of the wider Orsett Quarry landholding, it has been subject to historical mineral extraction and restoration to low quality pasture/ agriculture.

Client’s objectives: to create a diverse ecological habitat using clean inert imported material under a suitable recovery Environmental Permit. This would enable the adjacent quarry to reopen.

 

The project:

We provided a range of geo-environmental and regulatory advice designed to support the client’s planning and environmental permitting needs, including:

Geo-environmental understanding:

  • Ground condition desk studies;
  • Hydrogeological conceptualisations;
  • Intrusive site investigations including drilling under potential artesian conditions;
  • Construction Quality Assurance borehole specification and validation;
  • Stakeholder and Regulator engagement.

Permitting:

  • Full Environmental Permit Application (waste recovery) for the Ecological Park. The recovery permit was approved in November 2016 following protracted negotiation with the Environment Agency;
  • Waste permit exemptions;
  • Hydrogeological risk assessment
  • Client support;
  • Stakeholder and Regulator engagement.

Planning:

  • Data collection and desk study review;
  • Hydrogeological conceptualisations;
  • Contamination Assessment;
  • Flood Risk Assessment;
  • Soakaway testing and assessment
  • Client support;
  • Stakeholder and Regulator engagement.

Next Steps

Our continued project involvement will include:

 

Geo-environmental understanding:

  • Ground condition desk studies;
  • Hydrogeological conceptualisations;
  • Intrusive site investigations including drilling under potential artesian conditions;
  • Construction Quality Assurance borehole specification and validation;
  • Stakeholder and Regulator engagement.

Orsett Quarry:

  • Ad hoc support in relation to mineral processing;
  • Environmental Permit application for the proposed landfilling activities;
  • Support with permit compliance.

Planning:

  • Data collection and desk study review;
  • Hydrogeological conceptualisations;
  • Contamination Assessment;
  • Flood Risk Assessment;
  • Soakaway testing and assessment;
  • Client support;
  • Stakeholder and Regulator engagement.