Soil remediation in port industrial zone

Action:
Soil and groundwater remediation.

Location:Spain

Customer:
Confidential

Methods:
Excavation landfarming on site soil, pumping and treatment off site water and reinfiltration.

Products:
TPH, BTEX, organochlorines.
LNAPL

Background information

Subsoil affected by hydrocarbons, benzene, xylenes and vinyl chloride in industrial land formerly dedicated to the agri-food sector and textile processing.
Estimated volume affected 30,000 m
3 and 650 m3 supernatant free phase.

Objective and limitations

Elimination of free phase and compliance with remediation objectives according to quantitative risk analysis.

Methodology applied

Pumping and extraction of supernatant free phase and groundwater treatment.
Soil excavation and treatment by forced aeration and biostimulation (
landfarming).

Simultaneous techniques due to the need to depress the water table.

Due to its proximity to the sea and morphology, it requires parceling and filling.

Results

Earth excavation

9700 m3

Stockpiling in waterproofed area

Waterproofing of northeast and southeast walls to prevent mobilization to the excavated area.