The purpose of the PIMA study is to determine the possible increased levels of contaminants in the soil and to assess the need for soil remediation, ie rehabilitation, based on the results. The PIMA study is also referred to as the need for rehabilitation assessment.

 

PBM Environmental Engineering recommends commissioning a PIMA study in the following situations, for example

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• real estate and acquisitions

• oil tank removal

• excavation work in the vicinity of old oil tanks (eg drainage repairs)

• damages and accidents

• observations of pollution (eg odor of oil or waste fractions in soil)

• operational pollution (industry, workshops, service stations)

 

The scope and content of the PIMA study will vary from site to site depending on past operating history and future use. According to the expert’s assessment, PIMA surveys are always targeted at the most significant risk areas, eg in the vicinity of an oil tank, in order to minimize the risk of soil contamination.

 

PBM The content of a PIMA study produced by environmental technology usually consists of sampling, field measurements (PID, PetroFlag, and XRF), and laboratory analyzes. Sampling is usually performed with a multi-purpose drill or a test well with an excavator. On the basis of field measurements and laboratory analyzes, the expert prepares a Rehabilitation Needs Assessment Report, which reviews the findings and compares the results with the limit values ​​according to VNa 214/2007 (the so-called PIMA Regulation).

 

However, the assessment of soil contamination and the need for remediation must always be based on a risk assessment and the limit values ​​must be suitable for use on site. Based on the risk assessment, it is possible to arrive at concentration requirements for contaminants other than the limit values ​​set out in the PIMA Regulation. Ultimately, the authority (ELY Center) decides on the acceptable concentration level for the site.