Highly regarded environmental law boutique Celis Aguilar Álvarez, Guzmán Sarti y Asociados, SC handles the gamut of environmental matters, both contentious and non-contentious, with regulatory advisory, compliance, audits and concessions, licenses and permitting among its areas of strength in the latter. One of the founding partners of Mexico’s first environmental boutique some 25 years ago, veteran practitioner Humberto Celis leads the overall department, while Roberto Guzmán Sartí directs the consulting and litigation areas related to environmental impact, residues, emissions, remediation, citizen participation, indigenous consultations and climate change. At associate level David Salgado López (who is particularly active in relation to the mining sector) is also noted.