PVC sheet piling for cutoff and containment barriers FIGURE 7 Aerial view of the PVC sheet pile cutoff wall alignment at Elementis 30-inches (76-cm) wide. This width minimizes the number of interlocks in the barrier wall as well as reduces the number of driving episodes for the contractor, thereby expediting the installation speed. The 32-foot (10-m) long sheet piles were installed into difficult soil conditions by a geotechnical contractor using a steel mandrel. The 1,000-linear-foot (305-m) wall was installed in November 2009 (Figure 7). Numerous monitoring wells were established around the site, and the groundwater is sampled on an ongoing basis to confirm the effectiveness of the barrier wall. 36 Summary and conclusions PVC sheet piling and its compatibility with hydrocarbons, solvents and common fuel additives is often misunderstood in the context of real-world contamination levels. It has been demonstrated that concerns over compatibility using commonly available compatibility charts is not the right approach. PVC sheet piling has been used successfully for cutoff and containment applications on sites where organic containments are present. Even in difficult soil conditions, PVC sheet piling can be installed effectively and efficiently using the right Geosynthetics | August September 2020 0820GS_p28-37.indd 36 7/23/20 12:14 AM