OUR PROJECTS
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Capital Improvement Programs
Columbia Power & Water Systems
Long Term Water Supply Program
IDG provided planning and conceptual design services and currently providing program management services for the $400M program that includes the following"
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New 32 mgd River Intake
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16.8 Miles of 36" Raw Water Transmission Main
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12 mgd Expansion of the existing WTP to 32 mgd
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3.0 Miles of 24" Finished Water Transmission Main
Distribution System Improvements Program
IDG provided planning and conceptual design services for the system wide improvements program. IDG is currently providing detailed design services and program management services for the $100M program. Projects include:
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Three booster stations ranging from 500 to 3600 gpm
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Two Elevated Storage Tanks (1.5MG and 2.5MG)
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15.8 miles of watermain ranging in size from 8" up to 20"
Water Treatment Plant Improvements
Columbia Power & Water Systems
IDG has worked closely with CPWS to design and manage construction for several improvements over the years to the 20 mgd conventional surface water treatment plant.
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2018 Emergency Pump Project included a new high service pump and significant reconfiguring of yard piping to provide more pumping flexibility
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2019 Improvements included new high service pumping, rehabilitated flocculation including new mixers and new baffling, replacement of onsite hypo generation with bulk hypo
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2021 Membrane Pilot Testing in which IDG provided weekly operational assistance to CPWS staff for the 12 month long pilot system that included pretreatment followed by ultrafiltration membranes
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2024 Improvements included new high service pumping, new filter underdrains and media, new sed basin plate settlers and sludge removal systems
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Ongoing SOP Development
Clean Water Nashville Program
Metro Water Services
IDG staff are serving in several critical roles on the $1.5B overflow abatement program including
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Construction Manager
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Deputy Construction Manager
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Project Manager and
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Field Services Engineer
In addition to our work on the CWM Program and Construction Management team, IDG partnered with Hazen and Sawyer on design of the Central WWTPs new 440 mgd headworks facility, IDG provided design services for the grit pumping and conditioning processes, structural design, and independent technical review of the project.
Water/Wastewater Planning & Design
Water Authority of Dickson County
IDG has been working with WADC on a wide variety of projects over the years including water and wastewater system planning, sewer rehab, treatment plant improvements, water booster stations, wastewater pump stations as well as distribution and collection system improvements. A few of the specific projects include:
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Dickson WTP Improvements
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New Piney Pump Station and FM
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Burns Pump Station
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Promiseland Tank
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Hogan Rd Pump Station and FM
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Horn Tavern Pump Station and FM
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Bakersworks Booster Station
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Hwy 48 Watermain
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Two Mile Watermain
Capital Project Planning & Design
Milcrofton Utility District
IDG has served as Engineer for MUD for over four years and in that role provide engineering services for all capital projects and developer services. In addition to design work with MUD, IDG also provides financial forecasting and master planning services. Specific projects include:
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30" Cool Springs Transmission Main
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1-MG McKays Mill Tank
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2.5-MG Warren Rd Elevated Tank
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24" Colletta Park Watermain
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30" Breckenridge Transmission Main
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24" Warren Rd Transmission Main
Water Planning & Design
White House Utility District
IDG has provided a variety of engineering services to WHUD including master planning, treatment plant evaluation, treatment plant design and pump station design including the following projects:
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20 mgd Cranor WTP Expansion Planning
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Cranor WTP Improvements
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Water System Master Plan