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Contaminated Land | SIte Investigations | GQRA | DQRA

Introduction

There are generally two types of risk assessment. Generic Quantitative Risk Assessment (GQRA) and Detailed Quantitative Risk Assessment (DQRA).

DQRA

A Detailed Quantitative Risk Assessment (DQRA) may be appropriate for non standard land uses such as playing fields or areas of open space or for contaminants where there are no published standards and guidelines.  In such cases, LK Associates can generate Site Specific Assessment Criteria.  This involves close liaison with regulatory bodies and the Health Protection Agency.

A major advantage for our clients is that a DQRA can allow a more realistic risk assessment, reflective of actual site conditions which can often reduce the remedial requirements and, therefore, project costs.

A DQRA can also be used to support the inspection and possible determination of Part IIA sites.

GQRA

In a GQRA, LK Associates use appropriate published standards and guidelines for standard land-uses (such as housing with and without private gardens or commercial and industrial sites) to assess the contaminative status of a site and then use this as a basis for assessing if the site requires remedial action.

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