Environmental site assessment - Phase I-II

A Phase I ESA aims to: 

1. identify signs of actual and/or potential contamination of one or more areas of a site; 
2. determine the presence (current or historical) of products or activities likely to generate contamination of the land and the risk of contamination of the soil, air and water associated with these products or activities; 
3. determine whether it will be necessary to continue the investigation through Phase II, which aims to determine the nature, extent and level of contamination of one or more areas of the site and to evaluate 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 collected; 
• site visit and inspection; 
• use of standard field sheets prepared by PESCA Environment to facilitate the recording of complete and accurate data during the site visit. 

Phase II 

• drilling of trenches or boreholes, soil description, documentation of contamination indices and soil sampling; 
• detection of the presence of volatile organic compounds (VOCs) in soil samples using a photoionization detector (PID sensor); 
• planning, leveling, development and purging of monitoring wells, groundwater sampling using the low flow method, where applicable; 
• measurement of groundwater level and verification of the presence of floating phase; 
• permeability tests; 
• duplicate sample collection 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 results of VOC measurements; 
• evaluation of groundwater flow regime (groundwater level, direction and flow velocity, and hydraulic gradient); 
• identification of potential exposure routes for soils.