CSL Environmental & Geotechnical Ltd. is a small Northern Ontario firm with highly specialized skill sets. Our team has worked on environmental & geotechnical projects in the north for over 15 years. Our service specialties include environmental consulting services for contaminated sites (Hydrogeological Assessments, Hydrological Studies, Phase I, II, III ESAs and remedial action plans), environmental permitting (active & proposed mining operations), and geotechnical engineering (shallow & deep foundation design, dam safety inspections, construction layout & topograhical surveying and slope stability).