Water & Wastewater Services

CGRS has earned a strong reputation in the water- and wastewater-treatment community and we take the responsibility of delivering fresh, clean water to our community seriously.

Water & Wastewater Project Spotlights

Heit and Koenig Infrastructure Project - Broomfield, CO

Heit and Koenig Infrastructure Project

CGRS’s Construction Services group is working on the Heit and Koenig Infrastructure Project for the City and County of Broomfield and the Central Colorado Water Conservancy District. CGRS won the project, designed by Sunrise Engineering, with a bid amount of  $658,000. Our crew is self-performing all of the work, which includes all the trenching and backfilling for about 3,500 lineal feet of raw water pipelines that extend to the South Platte River northwest of Fort Lupton.

The PVC pipe being installed includes 18”, 24” and 36” pipe, along with installation of several 60” diameter precast concrete manholes. The project is scheduled to be completed in March and will tie into a pump station project for the Central Colorado Water Conservancy District, also won by CGRS and now underway.

Design-Build Wastewater Plant - Rifle, CO

GreenBack Produced Water Treatment Facility

CGRS designed and built the GreenBack Produced Water Treatment Facility. The facility was designed to accept wastewater from the production of natural gas and treat the wastewater to drinking-quality water for discharge to the Colorado River.

CGRS was contracted as the lead engineer and primary designer while managing a team made up of an architect and fire, mechanical, electrical, automation and civil engineers. The system was fully-automated, including a self-correcting system logic with dozens of pumps, sensors and recording devices.

Major construction components:

  • Site grading and excavation of (3) double-lined storage ponds with a total capacity of 4.4 MG
  • (2) pre-engineered steel buildings, 5,760 total square feet, to house equipment and administrative offices
  • Cast-in-place concrete sump with a total capacity of 40,000 gallons
  • Installation of a 1,200-Amp electrical service, motor control center and PLC cabinet
  • Dissolved air flotation
  • IFAS bioreactor
  • Dynamic sand filter
  • Self-cleaning mechanical filter
  • Tray strippers
  • Regenerative thermal oxidizer
  • Ultra-filtration and reverse osmosis

As the General Contractor, CGRS oversaw all aspects of construction including earthwork, structural, concrete, electrical and automation. CGRS also acted as the mechanical contractor, constructing piping and setting pumps, tanks, controls, and valves. The project was completed on time and within budget, with a total project cost in excess of $10 million.

Stormwater System Installation - Loveland, CO

Loveland Fire Rescue Authority Training Center Retention Pond Mitigation, Storm Sewer System

CGRS acted as the general contractor for an environmental remediation project and construction of a new storm sewer system for the City of Loveland.

Major construction components completed by CGRS crews included:

  • Excavation of an existing impoundment, removal and disposal of petroleum-contaminated soil
  • Excavation of a new water quality and detention pond
  • Installation of new storm sewer consisting of several hundred feet of 18”, 24” and 30” RCP and 14”x23” HERCP
  • Installation of pre-cast concrete structures, including manholes, a diversion inlet and sand/oil interceptor
  • Constructed a micro pool water quality structure along with an installed pre-cast outlet structure with flow control plates

The CGRS crew did extensive dewatering and treatment of the water through bag and cartridge filtration to be discharged to the sanitary sewer through a state permit.

PRV Replacement - Northglenn, CO

Northglenn PRV Project

The City of Northglenn contracted with CGRS to remove and replace three pressure reducing valves (PRVs) in its water distribution system. CGRS personnel removed and replaced 4”, 8” and 10” PRVs located inside two underground vaults.

The 8” PRV replacement occurred under a strict time schedule, as water service was shut down to a residential cul-de-sac during the work. The CGRS crew accomplished the task ahead of schedule, and the overall project was completed ahead of schedule and under the original budget.

Major construction components performed by CGRS included:

  • Dewatering of vaults
  • Health and safety assessment, ventilation of underground vaults, four-gas monitoring and non-permit-required confined space entry
  • Removal and installation of all existing PRVs and piping and installation of new PRVs, pipe, stands and restraint systems

South Tank Pumping Station - Milliken, CO

Town of Milliken South Tank Pumping Station

CGRS acted as general contractor for construction of a new pump station to serve the Town’s existing 1MG water tank.

Major components of the project included:

  • Locating and tying to existing 16” PVC 905 water line to connect to new pump station
  • Building excavation, backfill and all exterior pipeline work
  • Cast-in-place concrete foundation and 9’ basement level
  • Masonry building with engineered wood truss roof and standing seam metal roofing system
  • Pump system consisting of two standard service pumps, one high-service emergency pump, one jockey pump and one submersible sump pump.
  • Interior 4” and 8” ductile iron piping, associated valves and fittings
  • Associated electrical service and systems, variable frequency drives and automation installed by CGRS’s subcontractors and overseen by CGRS field superintendent