Featured Projects
All American Canal - El Centro, California The All-American Canal System, located in the southeastern corner of California, conveys water from the Colorado River into California's Imperial and Coachella Valleys. The system consists of the 82-mile All-American Canal, the 123-mile Coachella Canal, and appurtenant structures. Built by federal Bureau of Reclamation engineers in 1938, the original All-American Canal transformed the arid Imperial Valley into the nation's salad bowl. The existing All-American is constructed in the desert's sandy soils. The U.S. Bureau of Reclamation has concluded that an estimated 70,000 acre-feet of water per year is lost to seepage along a 23-mile section of the All-American Canal running through the sand dunes. Ames Construction, Phoenix, Arizona, along with Coffman Specialties, San Diego, California was the successful low bidder for the first 10-mile section of the canal to be replaced. They chose Northern Dewatering to deal with the existing ground water caused by the years of seepage. Northern Dewatering successfully installed a deep well dewatering system along the entire length of the project. Powered by Magnum generators, the Flygt submersible pumps were pumping in excess of 88 million gallons per day of ground water back into the existing canal, providing them with a dry work site. Click on the images to see a slide show.
Sewer Diversion Pumping - Brooklyn Park, Minnesota The project involved installation of a "Cured-In-Place" liner in just over 11,000' of the 54" Brooklyn Park Interceptor Sewer, owned by Metropolitan Council Environmental Services (MCES), to rehabilitate the existing RCP. The work was performed during the winter of 2008/2009. Lametti and Sons, Inc., Hugo, Minnesota, was the general contractor and employed Northern Dewatering to furnish and install a sewer diversion pumping system to pump around two interceptor reaches that were to be lined. Additional equipment was furnished to pump the major interceptor lines from the City of Brooklyn Park that enter the 54" main sewer. In accordance with the project plans and specifications, the pumping system had the capability of pumping peak flow rates of 11,000 GPM plus back up pumps. To accomplish this, NDI utilized two 16" Cornell, 250 HP, electric drive pumps with no-spill priming systems. Both pumps were driven by 300 KW generators and had variable speed drive systems for continuous flow. Back up pumping was provided by two 12" Thompson engine driven pumps with sound attenuated "Silent Knight" enclosures. The discharge piping was a dual 18" HDPE pipeline with air release valves and flow diffusers at the discharge location. Pipeline lengths reached over 6,000' per line, with a total of 12,000' of pipe deployed. Work began in early January of 2009 and carried through till the end of May 2009. The pump system ran continuously except for a short down time to relocate the pumps from one reach of the interceptor to the next. Click on the images to see a slide show.
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