Non-metal structural barriers, non-metal erosion control barriers, and non-metal environmental control barriers, all in the nature of aggregate-based four-legged blocks used for environmental containment, coastline restoration, erosion control, wildlife habitat creation, and wildlife protection; Nonmetal breakwaters; Structural barriers, in the nature of non-metal aggregate-based four-legged block structures, for coastline restoration and erosion control; Structural barriers, in the nature of non-metal aggregate-based four-legged blocks, for wildlife habitat creation and protection

Installation, maintenance, and repair of structural barriers, erosion control barriers, environmental control barriers, breakwaters, structural barriers for coastline restoration and erosion control, structural barriers for wildlife habitat creation and protection