ISO 18400-204:2017

Current Revision
Soil quality - Sampling - Part 204: Guidance on sampling of soil gas

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ISO 18400-204:2017

Soil quality - Sampling - Part 204: Guidance on sampling of soil gas

PUBLISH DATE 2017
ISO 18400-204:2017

ISO 18400-204:2017 contains guidance on soil gas sampling using:

  • active sampling (adsorbents, filters, air containers), and
  • passive sampling

applied at permanent or temporary monitoring wells or other installations in soils or underneath buildings (sub-slab).

It provides guidance on:

  • development of a sampling plan;
  • construction of monitoring installations;
  • transport, packaging and storage soil gas samples;
  • quality assurance.

ISO 18400-204:2017 also gives basic information about:

  • soil gas dynamics, and
  • identification of soil gas sources

relevant to permanent or temporary boreholes in soils or underneath buildings (sub‑slab).

The compounds covered by this document are:

  • volatile organic compounds (VOCs);
  • inorganic volatile compounds (e.g. mercury, HCN);
  • permanent gases (i.e. CO2, N2, O2, CH4).

ISO 18400-204:2017 does not give guidance on:

  • risk evaluation and characterization;
  • selection and design of protective measures;
  • the verification of protective measures, although the site investigation methodologies described can be used when appropriate;
  • the sampling of atmospheric or indoor gases;
  • the measurement of gases from the soil entering into the atmosphere;
  • monitoring and sampling for radon.
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