Asbestos Management Plan (AMP)

Under the duty to manage a plan has to be produced to manage the asbestos and record and monitor its condition, this is an Asbestos Management Plan

Licensed Material

Work with this material can only be undertaken by a company holding an HSE asbestos removal license. This usually includes all work with Asbestos Insulation Board, Thermal Insulation and Spray Coatings.

Non-licensed Material

Material (usually lower risk materials) that do not require the maintenance/remedial contractor, undertaking work on or removal of material, to have an asbestos removal license. All operatives must still comply with the legislation and guidance and be able to demonstrate competence.

HSG264 Asbestos: The Survey Guide

The HSE published guidance on undertaking asbestos surveys. The guide is for both surveyors and for people looking to commission surveys.

Demolition Survey

A fully intrusive survey to all areas of a property; undertaken prior to the building being demolished.

Refurbishment Survey

A fully intrusive survey to assess all asbestos within the structure of a building, prior to any planned intrusive work. The survey can be undertaken in specified areas of a property.

Management Survey

A level of asbestos survey to required allow everyday occupation of a building and to be undertake minor foreseeable maintenance.

Crocidolite

More commonly known as Blue Asbestos and is from the group of minerals called Amphiboles.

Amosite

More commonly known as Brown Asbestos and is from the group of minerals called Amphiboles.

Chrysotile

More commonly known as White Asbestos and comes from the mineral group known as Serpentines.

United Kingdom Accreditation Scheme (UKAS)

Organisations can demonstrate that they are technically competent to undertake surveys for ACMs through accreditation to ISO/IEC 17020 The United Kingdom Accreditation Service (UKAS) is the sole national accreditation body in the United Kingdom (UKAS, 21–47 High Street, Feltham, Middlesex TW13 4UN Tel: 020 8917 8400 www.ukas.com). Accreditation gives an assurance that an independent and authoritative body has assessed the technical competence of an organisation, including its underpinning management system. The scheme should ensure that the organisation can provide a valid service for the services specified on its schedule of accreditation.

Asbestos

A group of naturally occurring fibrous silicate minerals. Mined commercially due to their exceptional physical properties.

Window Sampling / Windowless Sampling / Dynamic Continuous Sampling

A small diameter borehole drilling technique undertaken by driving metre long hollow tubes into the ground.  These tubes are then retracted along with a continuous soil sample.  The boreholes are normally drilled using a small track mounted rig, some of which can gain access through gaps as narrow as a standard doorway when fully stripped down.

Standard Penetration Test (SPT)

These strength tests are ideal for testing the density of sands but can also be a useful guide within other soil types.  They can be conducted by a cable percussion drilling rig, a window sample drilling rig or a rotary drilling rig.  The blow counts of the SPT are used to calculate an N value.

Cable Percussion Borehole

A borehole drilled by a cable percussion or ‘shell and auger’ drilling rig.  These rigs are collapsible A-frame structures powered by a winch and cable system.  The rig is transported as a trailer towed behind a Land Rover or similar vehicle.

Soakaway Test

A soil permeability test normally undertaken in accordance with BRE365 ‘Soakaway Design’.  This allows a Soil Infiltration Rate to be calculated.

Ground Gas Risk Assessment

A risk assessment undertaken to determine the necessary level of ground gas protection required for a new development.  EMS undertake this assessment in general accordance with CIRIA document C665 and British Standard BS8485 and with reference to the 2011 Wilson and Card publication ‘An alternative to ground gas monitoring for ground gas risk assessment’.

Soil Guideline Values (SGV)

A series of assessment criteria published by the Environment Agency to help assess the chemical suitability of soils.  Different SGV are published for allotments, residential and commercial land uses.

Benzo(a)pyrene

The species of PAH which most commonly exceeds the soil assessment criteria.

Polycyclic Aromatic Hydrocarbons (PAH)

A commonly occurring group of soil contaminants, these semi-volatile organic compounds can be produced by incomplete burning and as part of gasworks processes.  They are also naturally present within coal.  EMS commonly test for a suite of 16 PAH species.

Pathway

The route via which contaminants migrate from source to receptor.

Receptor

Any feature which may be sensitive to harm by contaminated soil, contaminated water or ground gases.  Common receptors include residents of proposed housing developments, employees at proposed commercial/industrial developments, construction workers, watercourses and aquifers.

Phase Two Intrusive Ground Investigation

This involves the excavation of trial pits or drilling of boreholes to allow inspection and sampling of soils.  Soil samples are then sent to UKAS/MCERTS accredited laboratories for appropriate chemical or geotechnical testing.  Once laboratory test results are received a ground investigation report can then be produced.  Depending on the requirements of the client, this will include an assessment of the risk presented by chemical contamination, recommendations for remedial measures (if required), recommendations for foundation design and a ground gas risk assessment.

Phase One Desk Study

An initial investigation using historical maps, environmental database searches, published geological information and a site walkover survey to allow assessment of potential contamination risks and to highlight potential contamination sources.

Contaminated Land

The term ‘land contamination’ covers a wide range of situations where land is contaminated in some way. In a small number of these situations where certain criteria are met, a site might be determined ‘contaminated land’ which has a specific legal definition set out in Part IIA of the Environmental Protection Act.

Policy in this area addresses:

  • Measures to find and deal with existing contaminated land.
  • Measures to prevent more contaminated land being created. These include policy and legislation on pollution, waste, water and chemicals.

All over the UK, there are thousands of sites that have been contaminated by previous use. Often this is associated with industrial processes or activities that have now ceased, but where waste products or remaining residues present a hazard to the general environment.

There is increasing pressure to reuse land which is affected by contamination rather than develop greenfield sites such as parks or woodland