BS EN 17409:2020 pdf free download – Surfaces for sports areas – Code of practice for the sampling of performance infills used within synthetic turf surfaces.
C.1 General
This annex describes different options that can be carried out to assess if the results of analysis on infill
samples taken from fields and sites are affected by pollutants from the air or surrounding ground.
C.2 Sampling of the ground/soil around a field
Assessing the possible contamination of natural soil areas around the perimeter of a synthetic turf field can assist in determining if the accumulation of external pollutants have contaminated the infill material in the synthetic turf field.
Before carrying out a soil sampling program, it is important to verify the presence of enough areas of natural soil around the field and the suitability of the soil/ground in relation to the proposed sampling programme.
The total area to be sampled should be preferably at least 60 m2.
During the design of the sampling programme, a list of parameters to be determined should be prepared since this will influence the sampling procedure to be used e.g. the sample containers, the sample quantity, the preservation procedures to be adopted, handling, transport of the soil samples, etc.
The laboratory to be used should be chosen in relation to the type of analysis to be carried out on samples and on the expected concentrations of chemical substances considered to be in the soil samples (the minimum value requested could affect the analytical methods used).
As recommended in ISO 18400404, the minimum sample size of the soil sample for determination of chemical parameters should be 500 g to 1 000 g. The sample size should be sufficiently large to enable all required analyses to be performed. If there are enough natural areas surrounding the fields, it is preferable to collect composite samples by taking several increments and combining them to form a composite sample. As indicated in Iso 18400-104, research has shown that a single composite sample prepared by combining at least 25 increments will yield a reliable estimate of average properties of the soil.
As recommended in ISO 18400-104, when the distribution of chemical substances on the site under investigation is unknown and it is possible to estimate a uniform distribution of substances on the ground/soil, a non-systematic pattern of sampling, using a X shape and sampling along the diagonals, can be used.
The sampling equipment should be chosen according the criteria described in ISO 18400-102.
The soil samples, once collected should be transported, stored and preserved in accordance with
ISO 18400-105.
The following precautions should be considered when collecting soil samples:
As the samples taken will be subjected to chemical analysis tests special care should be taken to ensure they are not contaminated. This should include:
— collecting them in appropriate containers;
— storing samples in a secure location to preclude conditions which could alter the properties of the sample;
— using a clean pair of new, non-powdered, disposable gloves each time a different sample is collected. The gloves should be donned immediately prior to sampling and should be changed any time during sample collection when their cleanliness is compromised;
— using new, verified/certified-clean disposable or non-disposable equipment;
— keeping the sampling equipment clean (cleaning of new containers to remove dust and packing material).
Collected samples should remain in the custody of the sampler or sample custodian until the samples are transported to the laboratory.
Chain-of-custody documents should be filled out and remain with the samples until custody is relinquished to the laboratory that is going to analyse the sample.