1. Standard Specification for Classification of Soils and Soil-Aggregate Mixtures for Highway Construction Purposes,2012
2. ATSDR’s Substance Priority List,2019
3. Standard Test Method for Unconfined Compressive Strength of Cohesive Soil,2016
4. Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System),2017
5. Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils,2017