Andrew Leach, Managing Director

Andrew is a Chartered Engineer and Chartered Geologist with more than 30 years of international consulting experience. He has more than 20 years experience in the use of geosynthetic materials for waste management and mineral processing and is experienced in the evaluation, planning and design of integrated hazardous waste management systems. Dr Leach has also been closely involved with the planning and implementation of long term environmental services for the oil sector, in Azerbaijan and Georgia. He has been responsible for investigations of land contaminated with a wide range of chemicals, including hydrocarbons, metals and cyanide, He has worked on a number of mining projects including coal, iron ore gold and silver, lead-zinc, bauxite and tantalum in North and South America, Russia, Mozambique and Kosovo. Andrew has been the geotechnical consultant on a number of trunk road projects and has been an expert witness for planning appeals and court cases.

Peter Stevens, Director

Peter is a Chartered Geologist with 25 years of experience in environmental geology, hydrogeology and geotechnical engineering. He has completed more than one hundred fifty engineering and environmental projects, including waste management planning and engineering, contaminated site remediation, water resources evaluation and protection, and ground engineering. He has managed multi-million Dollar environmental construction projects with World Bank and European Union funding in Azerbaijan and Romania and is experienced in contracts such as FIDIC, ICE and World Bank models. Peter has also undertaken numerous geological investigations, environmental audits, construction supervision, environmental impact assessment, expert witness and planning.projects in more than twenty countries, including four former soviet republics. These projects have included assisting with the development of waste management legislation, institutional support and structuring of waste management concerns. He has also designed training programmes.Peter is moderately fluent in Russian.

Pete Duffy, Director

Peter is a civil engineer with 15 years experience in engineering design, project management, contractual administration and construction supervision, predominantly in the field of waste management. Peter has completed over 50 landfill engineering projects. He is experienced in geotechnical engineering and site investigation and has a detailed knowledge of geosynthetic materials and containment lining systems. He has an extensive knowledge of waste management regulation, construction quality assurance procedures, civil engineering methodologies, technical specifications, contractual procedure and financial control. Peter also has been involved with contaminated water treatment, land reclamation, road construction, foul and surface water drainage, coastal protection and river works. He has recently been involved with a major EU-funded waste management project in Romania.

Rufat Guliyev, Operations Manager (Baku)

Rufat is an experienced civil engineer, with 15 years experience of design, construction supervision and surveying. He has worked on a range of projects, including the design and construction supervision of landfill sites and roads, construction of high-rise apartment blocks, oil platform engineering, services installation and the renovation of existing structures. Since joining CQA, Rufat has worked on the site investigation and detailed design of three hazardous and non hazardous waste landfills, fully compliant with EU standards. He has also designed supporting infrastructure, including access roads and bridges, waste transfer area, water treatment tanks, drainage canals and lagoons, offices and laboratory complexes. His work has involved site visits, supervision of site investigations, assessment of results, preparation of detailed design and engineer’s cost estimate. Rufat has a degree in construction engineering from the Baku Construction University. His recent training has included work experience on a UK landfill construction site (construction of composite liner system) and a UK geotechnical engineering laboratory. Rufat is familiar with general computer office software and is competent on the use a range of computer-aided design software, including AutoCAD, Land Desktop and Civil Designer. Rufat is fluent in Azeri, and Russian, and speaks moderate Turkish and English.

Robert Stevens, Environmental Engineer

Robert is an environmental engineer with 10 years experience in water, wastewater and leachate treatment, where he has experience in the design, analysis and optimisation of many processes. He also has experience of related aspects of environmental engineering, including ecological surveying, waste management,composting auditing and regulatory liaison. Robert also has several years experience in landfill construction supervision and quality assurance. He has strong experience in developing and implementing operating procedures, for both quality management and regulatory compliance purposes, and in implementing such systems. He has regularly acted as a trainer in courses, workshops and hands-on situations. He has good computer skills, including analytical and numerical modelling using special packages and spreadsheets.

Keith Tysall, Resident Engineer

Keith is a resident engineer with more than 30 years experience as a construction supervisor and has provided contract management and construction quality assurance supervision for over 20 landfill engineering projects. He has extensive knowledge of containment lining systems, geosynthetic materials and soils testing. He also has experience of site investigation, highway construction and airport runway construction. Keith has recently completed supervision of an EU-funded mine tailings restoration project in Kosovo and a highway reconstruction project in Azerbaijan.

Warren Leach, HSE Advisor and Design Engineer

Warren has 10 years experience of mechanical and civil design, in materials handling, composting and waste management. He has worked as a Heath and Safety Advisor for a major waste management project for the oil industry in the Azerbaijan Republic and was responsible for the preparation of HSE documentation and procedures. He was also responsible for the implementation and documentation of HSE measures during construction. He is currently Design Engineer (for CQA) solid waste handling facility in Azerbaijan. He is experienced in the design, construction and maintenance of mechanical handling systems. 

Andrew Hall, Geologist

Andrew is a geologist with 8 years experience as a construction supervisor working for both contractors and consultants. He has worked on a number of projects in the UK and overseas and has experience of soil and groundwater bioremediation, landfill construction and site investigations.