Water treatment plant upgrades in Conifer, plus a capital improvement plan and plans for 40,000 feet of sewer and water line rehabilitation and replacement.
Mountain Water and Sanitation District plant upgrades and line rehabilitation
Where we work
Civil engineering in Colorado
Civil engineering for Colorado land development: grading, drainage, paving and utility layout, with CDPHE stormwater coverage and local plan review.
What we do in Colorado
Civil engineering for Colorado land development
MES does site civil design for Colorado developments, from small infill lots to mountain sites. We prepare the plan set and the reports a city or county needs to approve the site.
The work covers grading, drainage, paving, erosion control, and the layout of water and sewer lines. We stay on through agency comments until the plans are approved.
How civil plan review works in Colorado
Each city or county reviews site plans and drainage reports against its own criteria. Across much of the Denver metro area, drainage design draws on the Mile High Flood District Urban Storm Drainage Criteria Manual.
Construction that disturbs one acre or more, or that is part of a larger plan that will, needs coverage under the CDPHE construction stormwater general permit. The owner and the operator both sign the application.
Water and sewer lines must meet the provider standards and the CDPHE rules on separation between water and sewer lines. On tight sites, that spacing can shape the whole layout.
Civil work in Colorado
In Lakewood, MES handled paving, grading, drainage and utility layout for a six-home infill site on 0.75 acres. Also in Lakewood, we graded an outdoor learning area at a public library that opened in summer 2022.
In Kremmling, our cabin development civil set covered the site plan, grading, storm sewer, water and sewer networks, a fire truck analysis and an erosion control plan, with a drainage report for agency review.
Common questions
What does a Colorado civil plan set include?
Usually a site plan, grading and drainage plans, utility plans, erosion control and details, plus a drainage report. The exact list depends on the city or county.
Do small infill sites need a drainage design?
In most places, yes. Even a small site has to move water away from homes to an approved discharge point. On our Lakewood infill site, the grading sent runoff away from the homes toward compliant discharge points.
Do you work outside the Denver metro area?
Yes. We have done civil work in mountain towns such as Kremmling. Call (214) 833-6748 to talk about your site.
Projects
Work in Colorado.
Two replacement wastewater plants and 20,000 feet of sewer lining designed for two Routt County communities.
Phippsburg and Milner wastewater plants and collection system
A 105,000 gpd replacement plant and targeted sewer lining, pipe replacement and manhole upgrades designed for the Town of Yampa.
Town of Yampa wastewater plant and collection system
MES built an EPANET water model for the Town of Hayden, wrote a year-end memo with an I&I analysis, and drew RAISE grant plan sheets with quantities.
Town of Hayden water model, I&I analysis and grant plans
Since the new waterline went in at a Commerce City mobile home park, residents no longer complain about water pressure.
Mobile home park waterline replacement in Commerce City, CO
MES modeled wet weather sewer flows, drew the sewer and waterline plans and finished the collection system project manual for the City of Cripple Creek, and as of October 2026 the project is under construction.
City of Cripple Creek sewer model and collection system design
Talk to an engineer
Tell us about your project
An engineer reads it
Not a salesperson. Someone who can tell you whether the pathway is real.
You get a first answer
Your options, the agencies involved and the questions that decide cost and schedule.
You decide
No commitment to have the first call.
Prefer the phone? (214) 833-6748