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.

Stormwater Planning Projects

Hydrology and Hydraulic Analysis-Alternatives Evaluation - Implementation Recommendations

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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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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Channel Restoration Projects

Grade Control-Slope Stabilization-Habitat Improvement-Construction Documents

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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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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Floodplain Management Projects

HEC-RAS Modeling-Floodplain Delineation- Report Preparation

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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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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Drainage Design Projects

Hydraulic Design-(Storm Sewers, Channels, Culverts)-Construction Documents

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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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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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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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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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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