Liner Type (LT)
1 - Engineered 2 - Partial 3 - None
If your mine has a TSF it may or may not have a bottom liner, or layers of filtration to protect groundwater. These are made from different materials, some manmade, some natural. Use 1 for an engineered liner with 3 (or more) layers of fabric and/or filtration material); 2 for a partially engineered (1 or 2 layers) liner; and 3 if the TSF has no liner or filtration layers.