3,000 LB SUPER SACK OF SODIUM BENTONITE $600 PER UNIT

Bentonite coverage, when used for sealing ponds, typically ranges from 2-6 lb's per square foot depending on the soil type. Porous soils like sand and or gravel require higher application rates (4-6 lbs/sf), while clay or silty soils may need less (2-3 lbs/sf). A more detailed break down: Clay or silty soils: 2-3 lbs per square foot. Sandy soils: 4 lbs per square foot. Soils with rock and or gravel: 5-5 lbs per square foot. To ensure proper sealing, bentonite should be mixed into the top few inches of soil. It's crucial to compact the soil after mixing and potentially apply a protective layer of local clay or sand over the top .