The Design Team and its contractors remain engaged in several activities on or near the canal.
Drilling for Bulkhead Study
In August, the field team will conclude the first phase of canal bulkhead assessments. This work included soil sample collection, geophysical tests and boring installation. This study provides valuable information about the structure of the existing bulkheads and assesses their stability under current and anticipated future conditions. The results of the assessment will help us understand how the bulkheads may behave during and after remediation.
Non-Aqueous Phase Liquid (NAPL) Mobility Study
A full-scale study of the presence of Non-Aqueous Phase Liquid (NAPL) in the canal began in late July and will continue into October. The study will use specialized tools to assess the presence, distribution and mobility of NAPL within the sediments. We will also collect samples to determine the presence of soft versus native sediment. Results of this study will be used to confirm existing models and help refine dredge and cap designs.
Field Collections for Laboratory Studies
Throughout August we will collect samples of soft sediment, native sediment and surface water for several studies. We will use the samples to: