The team at Hernández & Cía advises on a broad range of environmental matters, spanning regulatory, contentious and transactional work. It is particularly noted for its expertise in the mining sector, while also demonstrating strong capabilities in hydrocarbons and real estate-related environmental issues. The practice is co-led by Luis Rodríguez Mariátegui, Luis Felipe Huertas del Pino and Juan Pablo Macassi. Formerly at his own mining boutique, Rodríguez Mariátegui is a 30-year veteran of the sector across both mining law and related environmental aspects; he has previously been appointed by the Peruvian Government as an expert in mining, environmental, and registry law in international arbitration proceedings. Huertas del Pino’s practice has a particular emphasis on environmental permitting and certification, water-use rights management, regulatory compliance, surface rights and involuntary resettlement processes, as well as environmental incident and crisis management. Macassi is well-versed in environmental matters defending clients in environmental sanctioning proceedings before Peru’s environmental regulatory body, OEFA. The team was further strengthened with the promotion of counsel Lorena Tanji to the partnership in July 2026. A strong bench of senior associates includes Elvis Salazar (who specialises in environmental permitting and compliance audits); Joseline Pérez (environmental compliance); Luis José Rodríguez Mariátegui (regulatory compliance and environmental risk management); and Eduardo Heredia, who was promoted to his current position in February 2026. Ex-practice co-head Miyanou Dufour and former principal associate Sebastián Saavedra both left the firm in July 2026.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- The team's horizontal structure allows them to understand the urgency of each matter, identify who their response is intended for, and consider multiple variables and risks.
- The Environmental team at Estudio Hernández is top-notch. From simple inquiries to complex analyses, they handle everything with ease. Often, the context of the inquiry is complex and requires specific expertise, which they provide flawlessly. The fact that their responses to our questions are tailored to the level of detail and/or language we need, whether legal or mining-related, adds significant value.
- They know the market. Inclusive and diverse team. Collaborative with the client's needs.
- High quality of service.
- A team that knows the regulations, the sector, and understands the state-market dynamic.
- The team at Hernández & Cía. stands out for its high level of legal analysis, practical approach, and genuine client focus. Its lawyers differentiate themselves from the competition by their ability to transform complex environmental issues into clear and actionable recommendations, always with a strategic and preventative focus. Among their most outstanding qualities are their regulatory expertise, analytical skills, and unwavering commitment to effective problem-solving. In particular, Luis Felipe Huertas del Pino is distinguished by his technical and legal rigor, leadership, and skill in precisely managing administrative procedures and sensitive regulatory matters, fostering trust and adding value in every interaction.
Key clients
- Lumina Copper
- Unión de Cervecerías Peruanas Backus y Johnston
- Grupo Romero Investment Office (GRIO) / Primax Peru
- Lares – Grupo Inmobiliario
- Gold Fields Salares Norte
- SGS del Perú
- Hudbay Perú
- Ariana Operaciones
- Mexichem Perú
- Gold Fields La Cima
- Pluspetrol Peru Corporation
Work highlights
Advised Gold Fields Salares Norte on securing regulatory approval for the transport of liquid mercury through Peru.
Advised Lumina Copper on securing critical environmental permits for continued exploration at the El Galeno copper project.
Represented Mexichem Perú in defending against its first OEFA administrative sanction and environmental inspection, achieving a significant reduction in potential fines.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Miyanou Dufour
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Luis Rodríguez Mariátegui; Luis Felipe Huertas del Pino; Juan Pablo Macassi; Lorena Tanji
Other key lawyers
Elvis Salazar; Joseline Pérez; Luis José Rodriguez Mariátegui; Eduardo Heredia