RGA's Water and Wastewater Engineering Experience
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Aurora Reservoir
Location: Aurora, Colorado
Description: The RGA team provided the design of water distribution system and sanitary sewer collection, treatment and disposal system for 11,000 gpd for the Aurora Reservoir recreational facility (formerly called SENAC Reservoir.
Description: The RGA team provided the design of water distribution system and sanitary sewer collection, treatment and disposal system for 11,000 gpd for the Aurora Reservoir recreational facility (formerly called SENAC Reservoir.
Black Hawk-Central City Sanitation District
Location: Black Hawk, Colorado
• 0.5 MGD activated sludge WWTP
• Eight miles of sewer lines • Sewage treatment plant upgrage to 1.0 MGD | • Sewer rate study
• District Engineering Services • Sanitary interceptor replacement to increase hydraulic capacity |
Bromley Park Metropolitan District No. 1
Location: Adams County, Colorado
• 6 miles of 18" - 30" waterlines
• 2.5 miles of sanitary sewer lines
• 1 mile of sewer force main
• 6 miles of 18" - 30" waterlines
• 2.5 miles of sanitary sewer lines
• 1 mile of sewer force main
Castle Pines Metropolitan District
Location: Douglas County, Colorado
Description: Design and construction administration of SCADA installation for District-wide water system.
Description: Design and construction administration of SCADA installation for District-wide water system.
Centennial Water and Sanitation District
Location: Centennial, Colorado
Infrastructure Improvements
Design and construction administration for 7,800 feet of 12" and 15" diameter sanitary interceptor sewer. The design included a capacity analysis for the future construction of a large residential development.
Big Dry Creek Interceptor
Design and construction administration for 5,000 feet of 20" diameter sanitary interceptor sewer. The design included a capacity analysis for future residential developments.
Marcy Gulch Interceptor
Design and construction administration for 17,000 feet of 15" and 30" diameter sanitary interceptor sewer.
Infrastructure Improvements
Design and construction administration for 7,800 feet of 12" and 15" diameter sanitary interceptor sewer. The design included a capacity analysis for the future construction of a large residential development.
Big Dry Creek Interceptor
Design and construction administration for 5,000 feet of 20" diameter sanitary interceptor sewer. The design included a capacity analysis for future residential developments.
Marcy Gulch Interceptor
Design and construction administration for 17,000 feet of 15" and 30" diameter sanitary interceptor sewer.
City of Edgewater, Colorado
• Various water and sewer main extensions and replacements
• T.V. and infiltration analysis of the City's sewer system • Plan review and inspection of subdivision developments • Reconstruction of 18" sewer outfall line | •Slip-lined rehabilitation of 30" storm sewer
• Replacement of 12" waterline in Sheridan Boulevard • Replacement of 12" waterline in 24th Avenue |
City of Sterling, Colorado
• Design and construction administration of 8,000 LF of 18", 12" and 10" water main and 3,200 LF of sanitary sewer
• Design and construction administration of a 1,200 gpm water booster pump station
• Design and construction administration of a 1,200 gpm water booster pump station
City of Thornton, Colorado
• 30" waterline replacement
• 1.4 MGD sanitary sewer lift station • WTP overflow system City of Trinidad, Colorado
• Design of 0.5 MGD wastewater treatment plant expansion to an existing 1.5 MGD facility. Facilities included preliminary treatment, aeration, clarification, digestion, ultraviolet disinfection, sludge dewatering, composting, and an operations building.
• 13,200 LF of sewer interceptor design and lift station in steep terrain | • Re-route of potable water storage overflow line
• Raw water influent valve and vault modification • Design of 10' Parshall flume for raw water flow measurement |
City of Westminster, Colorado
•Capital Improvement Advisor serving on a staff level and providing the City with on-call engineering services
• Water Distribution Model • Design and construction observation for 1.9 MGD sewage lift station, force main and Insituform lining of 1,600 LF of ACP • Design/build for 15 MGD, $23 million WTP • Design/build for new water booster pump station | • 88th and Zuni sewage lift station
• 95th Avenue sewage lift station replacement • Big Dry Creek parallel sewer interceptor • 6 MGD tertiary treatment, storage and distribution system • U.S. 36/Tennyson Street sewer replacement • Big Dry Creek WWTP hydraulic study • 92nd Avenue water main replacement |
Clarke Farms
Location: Parker, Colorado
Description: The RGA team completed design of all grading, drainage and landscaping work for the Clarke Farms Wellhouse and Pump Station.
Description: The RGA team completed design of all grading, drainage and landscaping work for the Clarke Farms Wellhouse and Pump Station.
Denver International Airport
Location: Denver, Colorado
Description: Preliminary design analysis and cost estimates for effluent disposal and sanitary sewer treatment at the new airport site. Analyzed feasibility of pumping from Metro Denver Wastewater plant versus on-site treatment for slow rate land application system. For wastewater collection, examined cost of collection for on-site treatment versus pumping to the Metro Denver outfall in 56th Avenue.
Description: Preliminary design analysis and cost estimates for effluent disposal and sanitary sewer treatment at the new airport site. Analyzed feasibility of pumping from Metro Denver Wastewater plant versus on-site treatment for slow rate land application system. For wastewater collection, examined cost of collection for on-site treatment versus pumping to the Metro Denver outfall in 56th Avenue.
Denver Southeast Suburban Water and Sanitation District
Location: Douglas County, Colorado
Description: Performed value engineering and construction viability review for the Pinery wastewater treatment facility. The projected savings in construction costs for this facility, as a result of the value engineering review, was $500,000. Performed design services for upgrade of existing booster pump station.
Description: Performed value engineering and construction viability review for the Pinery wastewater treatment facility. The projected savings in construction costs for this facility, as a result of the value engineering review, was $500,000. Performed design services for upgrade of existing booster pump station.
Stonegate Village Metropolitan District
Location: Parker, Colorado
• Prepared site applications for WTP lift station
• Prepared site applications for effluent irrigation sites • Water and sewer usage and tap fee study • 1.1 MGD WTP with slow rate land application system and 37 MG effluent storage reservoir • 5,000 gpm, three-pump water booster pump station • 2.5 and 3.6 MG buried water storage tank • Several miles of water and sewer mains ranging from 8 to 24 inches • Computerized water network analysis • Computerized operations and maintenance reporting system | • Plan review and inspection of subdivision developments
• Computerized District growth and financial projections • District service plan, including rate structures • 2,000 gpm manganese green sand water filter plant • 11 deep well pumping and transmission systems • 1.1 MGD advanced wastewater treatment (AWT) plant • Water and Sewer Rate Study • 0.864 MGD sewage lift station • 0.10 MGD sewage lift station |
Metro Wastewater Reclamation District
Location: Denver, Colorado
Description: Performed an analysis of the plant water system over a 75-acre wastewater treatment site. Study included a steady state network analysis of the system, with fire hydrant tests to verify model and to refine estimates of pipe friction factors. In addition, a surge analysis was performed on the system, simulating a power failure to the pumps and opening and closing of existing valves. The system was modeled with a variety of surge control devices to determine what would provide adequate surge suppression to the system. The surge analysis was performed with the University of Kentucky Surge IV computer program.
Description: Performed an analysis of the plant water system over a 75-acre wastewater treatment site. Study included a steady state network analysis of the system, with fire hydrant tests to verify model and to refine estimates of pipe friction factors. In addition, a surge analysis was performed on the system, simulating a power failure to the pumps and opening and closing of existing valves. The system was modeled with a variety of surge control devices to determine what would provide adequate surge suppression to the system. The surge analysis was performed with the University of Kentucky Surge IV computer program.
Parker Water and Sanitation District
Location: Parker, Colorado
• Prepared site applications for WWTP and effluent irrigation sites
• 1.0 MGD AWT facility design, O&M maunal and operator training •Master Water and Sewer Plan • 2,275 gpm ten-well collection, wellhouse and treatment system • 500,000 gpd WWTP expansion with land application system and two 50 MG effluent storage reservoirs • Two 600 gpm multi-completion wells, wellhouse and treatment system • 2,100 gpm four-pump booster pump station • District-wide central telemetry system for two WWTPs, two water storage tanks, two water pump stations, three sewage pump stations and ten wells • 2.0 and 1.0 MG underground water storage tanks • Design and construction administration of various water and sewer mains ranging from 8" to 30" • Computerized water network analysis of District water system • Plan review and inspection of over 30 subdivisions • Future water sources studies | • Water Rate Study
• 3.0 MG underground post-tensioned concrete water storage tank • 11 miels of 30", 24", 20" and 16" water transmission lines • Representative on Cherry Creek Reservoir Clean Lakes Task Force • 200 ac.-ft. effluent storage reservoir, 1.0 mile 12" effluent force main • Highway 83 Utility Crossing Improvements, including design and construction management of 653 feet of 12" water and sewer lines installed in 24" diameter casing pipe, and 150' of 36" casing across Highway 83 • 2.0 MGD AWT facility design including ultraviolet disinfection • Design and construction administration for a 12" nested withing a 24" Parshall flume for wastewater flow measurement • Design of chemical storage area including tank for concentrated sulfuric acid storage • 5.2 miles of 30" to 18" sanitary sewer effluent lines • 4 miles of 36" to 12" sanitary sewer interceptor lines with combination pipeline/bridge creek crossing |
Perry Park Water and Sanitation District
Location: Douglas County, Colorado
Description: 500 gpm green sand iron removal water treatment plant and pump station.
Description: 500 gpm green sand iron removal water treatment plant and pump station.
Southgate Sanitation District
Location: Greenwood Village, Colorado
• Rehabilitation of 3,200 LF of concrete sewer and 38 manholes
• Replacement of 4,200 LF of sewer
• Installation of 3,000 LF of 12" waterline
• Rehabilitation of 3,200 LF of concrete sewer and 38 manholes
• Replacement of 4,200 LF of sewer
• Installation of 3,000 LF of 12" waterline
Town of Alma, Colorado
Design of a 300 GPM water treatment plant.
Town of Hudson, Colorado
• Construction administration for 40,000 LF of 12" waterline
• Well design and modifications to equipment controls
• Developed bid package for SCADA control of water distribution water system
• Well design and modifications to equipment controls
• Developed bid package for SCADA control of water distribution water system
Town of Kersey, Colorado
Description: Evaluated the water distribution, wastewater collection and treatment, and storm drainage systems. Reviewed results of a T.V. analysis of the sewer system, and coordinated activities for leak detection services and valve inspections on the water distribution system. Developed alternatives and cost estimates for improving wastewater treatment and collection, storm drainage, and water supply.
Town of Parachute, Colorado
Site selection, preliminary design/engineering study and site application for .27 MGD wastewater treatment plant.
Town of Windsor, Colorado
Prepared a master plan for water, sewer and storm sewer facilities. Based on existing population and population projections, the cost and timing of capital improvements, including trunk lines and treatment facilities, was developed.
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