Environmental site assessments – Phases I and II
ESA - Phase I will:
- identify the actual and/or potential contamination of one or more areas of a site;
- determine the presence (current or historical) of products or activities that could lead to land contamination and the risk of soil, air and water contamination associated with these products or activities;
- determine whether further investigation will be required through a Phase II ESA, which aims to identify the nature, extent and level of contamination in one or more areas of the site and assess decontamination costs.
Our professionals carry out the activities necessary for the environmental assessment of your site.
Phase I
- Consultation of available and relevant sources of information and analysis of the information gathered;
- Site visit and site inspection;
- Use of standard field data sheets developed by Pesca to facilitate the collection of complete and accurate data during site visits.
Phase II
- Conducting drilling (trenches or boreholes), describing soils, documenting contamination indices and taking soil samples;
- Detection of volatile organic compounds (VOCs) in soil samples by photo-ionization (PID sensor);
- Development, levelling, development and purging of monitoring wells, groundwater sampling by the low flow method, where applicable;
- Groundwater level measurement and verification of floating phase;
- Conducting permeability tests;
- Duplicate sampling for quality control;
- Sampling of surface water, sediment, residual material, liquid discharge, air or dismantling materials;
- Location of sampling points;
- Selection of soil samples for analysis based on field observations and VOC measurement results;
- Groundwater flow rate assessment (groundwater level, direction and speed of flow and hydraulic gradient);
- Identification of potential exposure pathways for soils.