A selection of the most important references:

All the constructions were carried out according to the rules of technolgy and free of faults.

Alt Duvenstedt 1991-1998 Gas well heads of HDPE, drainage pipe, pipe penetration structures of HDPE, gas collection bar, geo-textiles of HDPE, geo-membrane / plastic layer, mineralic layer, recultivation layer, drainage layer;
contract sum: 12.200.000 DM
Alversdorf (LK Helmstedt) 1999 Control shafts, Rohrdurchführungsbauwerke, leachate pipes, collecting pipes;
contract sum: 480.000,00 DM
Am Mittelrück 1997-1998 Leachate pipe, collector pipe, gas-drainage, leachate control shafts, run-off monitoring shaft, HDPE/PP-geotextiles, betonite mattress;
contract sum: 810.000,00 DM
Bassum 1994-1996 Leachate piping, double pipe system, shaft structures, pipe penetration structures;
contract sum: 960.000,00 DM
Bielefeld-Senne BA 2 1997 Gas drainage pipe, gas transport piping, pressure pipes, geo-membrane / plastic layer, drainage mattress, gas collection shaft, irrigation shafts;
contract sum: 600.000,00 DM
Blockland Bremen 1990-1992 Valve shafts, collector pipe, leachate storage tanks;
contract sum: 1.500.000,00 DM
Bochum - Kornharpen 1999 Gas well heads, pipes;
contract sum: 128.849,67 DM
Ecklak 1991 Leachate collecting shafts, gas collection shafts, pump shafts, pressure pipes, drainage pipes, geo-textiles;
contract sum: 10.800.000,00 DM
Ecklak 1997 Gas collection station, gas wells, gas collection pipes, drainage pipes, necessary earthworks and works in the contaminated area;
contract sum: 820.000,00 DM
Ecklak 1999 BA III geo-membrane, wind-protection,
contract sum: 750.000,00 DM
Francop (HH) BA 1,2,3,5 1992-1994 Leachate shafts for harbour silt leachate water;
contract sum: 380.000,00 DM
Georgswerder 1990-1994 Control / monitor shafts, pump shafts, by-pass shafts;
contract sum: 4.500.000,00 DM
Grube Präsident 1999 Control / monitor shafts, pump shafts, revision shafts, shaft, pipe penetration structures, leachate pipe, collector pipe, double pipe system, pressure conduit, protective membrane, geo-membrane / plastic layer, supply / assembling of immersion motor pums, supply / assembling of shaft driving systems;
contact sum: 1.500.000,00 DM
Ihlenberg 1992-1994 Gas-leachate combination shafts, shafts, HDPE-pipes, double pressure pipe conduit;
contact sum: 4.700.000,00 DM
Ihlenberg 1996-1998 Drainage shafts, shafts, gas wells, HDPE-pipes, geo-textiles, geo-membrane / plastic layer, mineralic layer, installation of earth;
contact sum: 4.200.000,00 DM
Kiel-Schönwohld 1994-1996 Drainage shafts, gas collection stations, gas well heads;
contact sum: 650.000,00 DM
Lechstedt 1997-1998 Gas-outlet-wells, gas drain wells, gas collection station, pump shaft, gas condensate shaft, leachate control/monitor shafts, drain shafts, pipe penetrations, gas collection bar, gas conduit, drainage pipe;
contact sum: 600.000,00 DM
Melbeck 1999 geo-membrane / plastic layer for sewage sludge, bentonite mattress protective layer, drainage mattress;
contact sum: 60.000,00 DM
Neumünster BA1 1989-1992 Drainage pipes, closed collector pipe, gas pipe, condensate pipes, leachate pressure pipes, operation water supply pipes;
contact sum: 5.600.000,00 DM
Neumünster BA2 1992-1998 Drainage pipes, collector pipe, plastic layer, pipe penetrations, anti gas plug, segment ards;
contact sum: 3.350.000,00 DM
Rastorf 1994-1995 leachate pump stations, pipe penetration structures, drainage pipes, closed leachate pipes, geo-textiles, geo-membrane / plastic layer, geological barrier, mineralic layer, drainage layer;
contact sum: 5.900.000,00 DM
Rastorf 1999 Geo-membrane / plastic layer, protective membrane, multicolor geo-textiles, running meters driving with camera of the leachate drainage conduits, flushing arcs, tee-piece, drainage pipe;
contact sum: 312.040,00 DM
Rosenow 1996-1998 Leachate control/monitoring shafts, pump shafts, drainage pipe, double pipe conduit, pressure conduit, gas conduit, transpiration conduit, pipe penetrations, geo-textiles, geo-membrane / plastic layer, mineralic layer, marginal embankments and earthworks, road construction, drainage layer;
contact sum: 5.200.000,00 DM
Rosenow 1999 Leachate pipe, cuvering, pipe penetration, flushing arcs, driving with camera, geo-textiles, geo-membrane / plastic layer;
contact sum: 788.000,00 DM
Salzgitter Diebesstieg 1999 Gas condensate collection shaft, pipes;
contact sum: 256.000,00 DM
Salzgitter Diebesstieg BA 1b 1997 Geo-membrane / plastic layer, protective and separating membrane geo-textiles;
contact sum: 600.000,00 DM
Schwanebeck 1999 Los 2 / Phase 1 Gas condensate separators/traps, revision shafts, gas well heads, gas condensate storage vessel, gas collection stations, stilling/absorption length, pipes, earth and lan excavation, complete pipe trench excavation and refill, electrical installation and switch cabinets for pump shafts and gas collection stations;
contact sum: 1.984.643,00 DM
Stern-Anklam BA2 1998 Leachate shafts, leachate conduit, leachate ring collection conduit, pipe penetration structures, geo-membrane / plastic layer, geo-textiles;
contact sum: 1.000.000,00 DM
Stern-Anklam BA3 1999 Control/Monitoring shafts, pipe penetration structures, leachate pipes, pipes, geo-textiles, geo-membrane / plastic layer;
contact sum: 1.145.000,00 DM
Uelzen-Borg 1992-1995 Leachate pipe, closed leachate pipe, HDPE-pressure pipe and conduit, combination shafts, shaft structures, leachate pumping station, pipe penetration structures, geo-membrane / plastic layer, geo-textiles;
contact sum: 2.500.000,00 DM
Woltersdorf 1995 Gas collection stations, condensate seperator/trap, gas wells, gas collection pipes, drainage pipes, necessary earthworks and works in the contaminated section;
contact sum: 950.000,00 DM

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