42 Water quality control services; scientific and industrial research services relating to environmental protection; laboratory research services in the fields of water and water treatment and purification; services of chemical analysis; chemical research; professional consultancy, namely, engineer work in the field of waste and water treatment; study of technical projects, namely, technical research in the field of water and water treatment; engineering work and engineer works not for construction, namely, technical research in the fields of water and water treatment; surveying in the field of water and effluent treatment; laboratory research services in the fields of industrial, household, hospital and special waste, refuse, sludge, ash, industrial, household, hospital and special waste recovery; bacteriology research services; surveying in the field of industrial, household, hospital and special waste, sludge and ash from urban and industrial plants; computer programming; computer services, namely, development, design and updating of computer software and software packages; technical consulting and advice in the field of computing being operation of computer; computer rental; design of computer hardware and telecommunication systems being equipment and software; scientific and industrial research services for developing and evaluating the performance of physical-chemical water treatment processes and products; scientific and technical studies for developing and evaluating the operational performance of installations for treating drinking or industrial water, for processing wastewater, household and industrial wastewater, as well as for treating physicochemical or biological fluids and sludges; technical audits in the nature of engineering advice relating to processes and equipment in the field of water and fluid treatment, household waste, industrial waste, hospital waste, and industrial waste treatment processes; research center services, namely, providing facilities for scientific research in the fields of collection, transport, treatment, cleaning, storage, sanitation, recovery and disposal of waste and refuse; expert appraisals in the nature of engineering consultancy in the field of waste and refuse; scientific and industrial research relating to environmental protection for the collection, transport, treatment, cleaning, storage and recovery of waste and refuse; engineering design services; technical project studies in the nature of technical environmental research in the field of waste treatment; engineering design services in the fields of design and construction of industrial and urban centers and units for the collection, sorting, storage, treatment, recovery and disposal of waste and refuse; research on prevention of air, water and sound pollution; consulting regarding environmental protection, urban planning, and industrial design; providing technical information on the environment relating to water quality; study services being technical research with regard to economic, social and environmental implications of pollution; conducting studies in the field of urban planning as it relates to industrialization and use of natural resources, particularly of water; soil tests, namely, soil percolation testing; engineering services in the field of agricultural, horticultural, wine growing, arboricultural and silvicultural industries; water, air and soil quality control for others; engineering services in the field of industrial information systems, namely, centralized technical management and control, monitoring automation, decision-making systems, management systems for operating data; technical project studies consisting of analyses, evaluations, estimates, research, namely, technical engineering consultation in the fields of maritime, offshore, port, energy, sustainable development, environment, climate, weather, industrial and household waste management, water, flood control, hydrogeology, development of wet areas, public transport, telecommunications, civil engineering and urban engineering; management of Internet sites of others in the field of management of waste from care activities