This document contains guidance on soil gas sampling using applied at permanent or temporary monitoring wells or other installations in soils or underneath buildings (sub-slab). It provides guidance on: This document also gives basic information about relevant to permanent or temporary boreholes in soils or underneath buildings (sub-slab). The compounds covered by this document are: This document does not give guidance on:
Sisällysluettelo
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Preliminary items to be considered
5 Basic principles
5.1 Physical and chemical principles
5.2 Environmental conditions
5.3 Soil gas dynamics
5.4 Identifying the source of soil gas
6 Requirements for sampling plan
6.1 General considerations for sampling plan
6.2 Working ranges of measurement methods
6.3 Monitoring well options
6.4 Sampling plan
7 Construction of monitoring installations
7.1 General
7.2 Soil gas sampling devices
8 Sampling
8.1 Generic consideration
8.2 Preparation of the monitoring installations
8.3 Active sampling
8.4 Passive sampling
8.5 Sampling for on-site measurements
9 Identification, packaging and transport of samples for laboratory analysis
9.1 Identification
9.2 Packaging and transport
10 Sampling report
11 Quality assurance
11.1 General
11.2 Quality control samples
11.3 Interferences
11.4 Interpretation of soil gas analyses for VOCs
Annex A Standard equipment and instruments used for soil gas sampling for VOCs (informative)
Annex B Portable equipment to measure gases (informative)
Annex C Equipment to measure flow rates and borehole pressure (informative)