The Southern Delivery System is a regional project that will bring water from the Arkansas River to the City of Colorado Springs, the City of Fountain, Security Water District and Pueblo West Metropolitan District. The project is needed to maximize the investment in the existing water delivery infrastructure, provide for a redundant method of delivery for Colorado Springs western slope water supply and ensure capacity for the region’s growth. The project is critical to maintaining a healthy economy and quality of life, to ensure uninterrupted and reliable water supply for both domestic and commercial use and to help protect the community against future drought, given how susceptible it is to such an occurrence.
Location: Colorado Springs, Colorado, United States
The estimated cost of the Phase One is $940 million, which is on schedule to be completed early in 2016. Phase Two of the program includes two new reservoirs (Upper Williams Creek and Williams Creek) and the expansion of the water treatment plant and pump stations to a capacity of 100 million gallons a day. Phase Two is currently planned for the 2020-2025 time frame.
In early 2010, after nearly 20 years of major planning and permitting efforts, Colorado Springs Utilities moved the Southern Delivery System into the implementation phase. Through a rigorous selection process it selected MWH to work as part of an integrated client/consultant team to deliver the program of works.
MWH has the lead in the implementation of a number of tools to assist in the successful delivery of the program. These included Primavera P6® scheduling and Contract Manager® construction management software, a custom SharePoint electronic document management system and MWH’s mPDS®, a custom workflow governance system guiding the delivery of all of the programs projects using a common implementation and management review and approval approach.
Prior to the start of the Southern Delivery System project, MWH was selected through a competitive process to manage the development of an extensive Environmental Impact Statement (EIS) for the Southern Delivery System as a third-party consultant to the Bureau of Reclamation. The EIS was completed after nearly six years of analysis of potential alternatives and the environmental impacts of each which culminated in a Record of Decision in March 2009 recommending the current Southern Delivery System project as the Preferred Alternative. The No Action alternative consisted of additional ground water development from the deep Denver Basin aquifer, indirect potable water reuse supplied by reclaimed wastewater and urban runoff, and alluvial ground water development. Alternatives for the EIS included options for raw water pipeline alignments, reservoir locations, and methods of managing return flows.
The core components of Phase One of the program consists of:
A connection to the North Outlet Works of Pueblo Dam
47 miles of 90-inch and 66-inch diameter raw water pipeline
Three pump stations to lift the water 1500 feet from Pueblo Dam up to the City of Colorado Springs, including Juniper Pump Station near Pueblo Dam and the Bradley and Williams Creek pump stations in El Paso County
A new 50 million-gallon-per-day water treatment plant and finished water pump station
Eight miles of large diameter finished water distribution pipeline
Environmental and other mitigation projects to meet permit requirements