Major construction projects, especially new office, residential and mixed use buildings, often require dewatering to remove intercepted groundwater from subterranean areas.
When the Colorado Department of Transportation encountered high levels of arsenic in the groundwater during highway construction near Santa Fe and Broadway, for example, it was precluded from disposing of the water by releasing it back into the stream. Consequently, CDOT trucked 200 million gallons of water to another location at a cost of $1.6 million during the course of the project. Other projects have experienced intercepted water flows even after construction is completed. Throughout the Denver metro area, contractors continue to encounter elevated background levels of arsenic, selenium, other metals and nutrients – the types and amounts of which vary by location – and similar groundwater conditions are encountered in other areas of the state.
Click on the above PDF to read entire article published in the Colorado Real Estate Journal.