We make it our priority to deliver the best solutions to our client's project needs.
We have the ability to complete all phases of an engineering project from planning and design to construction management.
Below are example projects. |
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Stormwater Planning Projects
Hydrology and Hydraulic Analysis-Alternatives Evaluation - Implementation Recommendations |
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Upper Goldsmith Gulch Outfall Systems Plan and Flood Hazard Area Delineation |
Client: UDFCD, Arapahoe County and the City of Greenwood Village
Completion: November 2005
The Preliminary Design Report was prepared and the master plan addressed flooding, stream stability, and water quality improvements. Specific recommendations were made for improved channels, enlarged pipe and box culvert structures, and regional detention facilities in the upper Goldsmith Gulch watershed.
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Goldsmith Gulch |
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Berthoud Pass Drainage Design |
Client: JF Sato and CDOT Region 1
Completion: December 2002
The design included development of the project hydrology for both on-site and off-site watersheds for the State Highway 40 Berthoud Pass reconstruction. For the offsite watersheds, regional regression equations and the SCS TR-55 procedure was used to estimate peak flows. Culvert hydraulics was completed to determine the required pipe sizes for approximately 25 cross culverts. Pavement drainage analysis was completed to establish inlet spacing along the concrete barrier. Finally, the analysis and design was completed for six permanent stormwater quality control devices to intercept highway runoff and remove traction sand (from winter maintenance operations) from the runoff prior to discharge to adjacent receiving waters.
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Berthoud Falls at State Highway 40 |
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Channel Restoration Projects
Grade Control-Slope Stabilization-Habitat Improvement-Construction Documents |
Rock Creek Channel Restoration - Final Design |
Client: Urban Drainage and Flood Control District
Completion: November 2004
Description:
Final plans were completed for the improvements to the Rock Creek channel through the Carolyn Holmberg preserve in Boulder County. Due to upstream urban development and the subsequent increase in both base and peak flows, the channel has experienced channel bottom and bank erosion. To mitigate the problem, design plans and details were prepared for sculpted concrete grade control structures, low-flow channel and slope stabilization measures, improved road culvert crossings, and planting of wetland, riparian and upland vegetation to restore the Rock Creek channel.
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Rock Creek Channel |
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East Plum Creek Channel Improvement |
Client: CDOT Region
Completion: November 2001
The East Plum Creek channel in the vicinity of the Wolfensberger Interchange has degraded over the years. The lower channel invert lowered the local water table and this has adversely impacted the existing wetland vegetation and habitat adjacent to the main channel. This area is also habitat to the Preble’s Meadow Jumping Mouse which is an endangered species. The purpose of the project was to raise the channel invert, to prevent future degradation, and to raise the water table adjacent to the channel. In order to accomplish this, six steel sheet piling check dams were designed. The vertical elevation of each check dam was established to maximize raising the water table without causing inundation in the overbank area. Construction plans were prepared for the check dam construction.
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Installation of Sheet Pile |
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Floodplain Management Projects
HEC-RAS Modeling-Floodplain Delineation- Report Preparation |
Hayman Fire Area- FEMA Flood Insurance Study |
Client: Douglas County
Completion: July 2004
The flood insurance study included the hydrologic analysis for four tributaries to the South Platte River: Four Mile Creek, Horse Creek, West Creek, and Trout Creek. HEC-HMS was used to model runoff from the watersheds. HEC-RAS was then used to determine the 100-year floodplain characteristics. Digital floodplain data was developed into the appropriate format so that it could be integrated into the County's digital flood insurance rate map.
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Flooding in the Hayman Fire Area |
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Upper Goldsmith Gulch Flood Hazard Area Delineation |
Client: UDFCD, Arapahoe County and the City of Greenwood Village
Completion: July 2005
The flood hazard area delineation was completed for approximately 3 miles of the Upper Gold Smith Gulch Drainageway. The study goal was to develop updated floodplain and floodway boundaries using HEC-RAS model. Plan and profile sheets were created for the report and flood characteristic data developed from the study was included in Arapahoe County’s Digital Flood Insurance Rate Maps.
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FHAD Plan and Profile Drawing |
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Drainage Design Projects
Hydraulic Design-(Storm Sewers, Channels, Culverts)-Construction Documents |
Broadway Avenue Storm Sewer Design |
Client: Carter-Burgess and City of Boulder
Completion: December 2001
A hydrologic analysis using the CUHP and UDSWM computer models was completed for a large offsite watershed tributary to Broadway Avenue. The peak flows, determined from the analysis, were then used to identify alternatives and required storm sewer trunk line sizes within Broadway to adequately convey the 5-yr design event to Boulder Creek. An alternative evaluation and preliminary design report was completed and recommendations made for drainage improvements. Construction plans were then developed based on these recommendations. Plan and profile sheets were developed for approximately 3,000 feet of storm sewer trunk line improvements. In addition, pipe laterals and inlets were designed.
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Horizontal-Elliptical Storm Sewer Being Installed |
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Engineering Services - Infrastructure Design - Park Improvements
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Metzler Ranch Park, Parking Lot & Drainage Improvements |
Client: Town of Castle Rock
Completion: September 2005
Moser & Associates designed parking lot, sidewalk, and drainage improvements for Metzler Ranch Community Park. The new parking lot is adjacent to a regional detention pond that has experienced several feet of sediment accumulation, gully erosion along the banks, and pipe outlet erosion. Construction plans and specifications were prepared for the parking lot and detention improvements to repair damaged infrastructure, build sediment fore bays, and restore eroded banks. A conceptual grading plan to restore the detention pond’s original capacity was also prepared.
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Grading for Detention Basin Forebay |
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Town of Castle Rock - Gemstone Park |
Client: Town of Castle Rock
Completion: March 2006
The park will provide various amenities including a synthetic turf athletic field, in-line skating, picnic locations, along with playground areas. A Phase III Drainage Report was prepared along with construction plans that included grading, drainage, parking lot, irrigation water line requirements, and a stormwater management plan.
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Gemstone Park |
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| Examples of Other Services |
Construction Observation – Castlewood Library |
Client: City of Centennial
Completion: 2004
The ground around an existing 54” metal pipe had collapsed, causing large sink holes in the channel. The invert of the pipe had suffered corrosion and abrasion, damaging the pipe invert. The water was flowing outside of the pipe in some locations. The first phase of the project replaced 290 feet of pipe and a segment of the invert of the 54” pipe was lined with concrete as a temporary measure until the next phase of the project could be funded. The entire project from conceptual design to end of construction was completed in four months. Construction management services including construction observation and contract administration were provided.
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Concrete Lining Damaged Invert of 54" diameter Metal Pipe |
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CDOT Region 1- Erosion Control Inspections |
Client: CDOT - Region 1
Completion: December 2003
CDOT Region 1 construction projects were inspected for implementation of best management practices (BMPs) and compliance with the NPDES Stormwater Permit Regulations. The installation and effectiveness of both permanent and temporary BMPs were evaluated and when necessary, recommendations were made to install additional erosion control practices and to improve the performance of existing BMPs.
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Inspection of Erosion Control Practices |
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