37
Street cleaning; cleaning of building exterior surfaces; cleaning of buildings (interior); cleaning and repair of boilers; cleaning of clothing; cleaning of vehicles; window cleaning; cleaning of petrol, oil and grease separators; septic tank cleaning; cleaning of pipes and drains; cleaning of catch pits; industrial cleaning; sanding; leasing of cleaning machines; dry cleaning; building construction; repair; installation services; construction and repair of environmental technology installations, in particular waste dumps, clarifying, incineration and drain systems, and glass-processing installations
39
Collection, transport and storage of waste materials, residual materials and recycling materials; transport and storage of waste; transport (removal) of domestic and industrial waste, including special waste materials; transport (removal) of industrial waste waters; transport (removal) of untreated human waste; transport (removal) of oils and materials containing oils; transport (removal) of envionmentally hazardous liquids and transport (removal) of environmentally hazardous solids; supply and distribution of electrical energy, gas or water; water supplying; transport, packaging and storage of goods; rental of storage, waste and waste product containers
40
Waste treatment (transformation); detoxification of hazardous materials; sorting of waste and recyclable material; recycling of waste and rubbish; destruction of waste and trash; recovery of valuable materials; treatment of waste by chemical, biological, physical and thermal processes; disposal of toilet cubicles, toilet cars, toilet containers and waste containers; incineration and destruction of waste; air purification; treatment of materials; water treatment; sewerage treatment services; production of energy; operating environmental technology installations, in particular waste dumps, clarifying, incineration and drain systems
42
Consultancy in environmental protection; determining concentrations of hazardous materials; calculating emissions and immissions; environmental assessment services; technical consultancy; architectural consultancy; construction drafting; technical project studies; architecture; building, namely the technical preparation of building projects; engineering; EDP consultancy; biology, chemistry and physics services; technical planning and construction drafting of waste disposal and waste water treatment installations; development, planning, designing and conducting of, and consultancy in connection with approval procedures for installations, equipment and processes for the chemical, physical, thermal and biological treatment, processing and/or dumping of water, waste water, waste and scrap; conducting chemical, analytical and toxicological tests of all kinds; analysis and evaluation of soils, waters, gases and waste; environmental technology consultancy, planning and development of environmental technology processes and systems, in particular in the field of environmental hygiene, energy supplying; planning of environmental technology installations, in particular waste dumps, clarifying, incineration and drain installations