Colorado mountain valley at sunrise
Ansom Outdoor LLC · Colorado

Civil engineering for the places worth protecting.

We design land developments, water systems, and outdoor recreation infrastructure across the Rocky Mountains — pairing sound engineering with a deep respect for the landscape.

20+
Years combined Colorado experience
3
Practice areas, one focused team
100%
Rocky Mountain projects
What we do

Three practice areas, one Colorado firm.

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Most-requested service

Septic quote — Clear Creek County pre-loaded.

Single-family OWTS design for the Idaho Springs corridor. Enter site conditions, get a structured estimate that already accounts for Reg. 43, county setbacks, and mountain-elevation treatment requirements.

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Septic quote — single-family

Get a structured estimate in 60 seconds.

Clear Creek County pre-loaded
Recommended system
ATU + secondary dispersal
Required in Level 2/3 zones (most of Clear Creek).
Design flow · tank
225 gpd
1000 gal tank minimum
Estimated design fee
$6,840$15,390
Firm comparison: $34,200 @ $300/hr
Code pack applied — Clear Creek County, CO · Idaho Springs area (near 600 Van Eden Rd)
Clear Creek County Environmental Health + CDPHE Reg. 43 (5 CCR 1002-43)
  • Single-family dwelling design flow: 75 gpd per bedroom (min. 2 bedrooms = 150 gpd) per Reg. 43 Table 6-1.
  • Minimum septic tank: 1,000 gal for ≤3 bedrooms; +250 gal per additional bedroom.
  • Setbacks (typical): 100 ft to wells, 50 ft to surface water, 25 ft to property line, 20 ft to dwelling, 10 ft to water line.
  • Clear Creek County is largely Level 2/3 treatment (source-water protection, steep slopes, shallow bedrock). Expect ATU + secondary treatment above 8,500 ft or near Clear Creek / tributaries.
  • Percolation / profile pit required; frost depth 42" (design invert ≥ 48").
  • Van Eden Rd corridor: decomposed granite over shallow bedrock, 8,000–9,000 ft elevation, steep aspect — plan for shallow trenches, sand-lined bed, or engineered mound.

Estimate is design-only. Excludes county permit fees, soils lab, and construction.

Our approach

Read the land. Draw the line. Build it well.

Every project starts with the site. Slope, soils, drainage, wildlife corridors, viewsheds, and the way a community uses the ground — those constraints become the design language for what gets built.

We keep teams small and senior. That means the engineer you meet at the kickoff is the same one walking the site, stamping the plans, and picking up the phone at construction.

Owned
Independent Colorado LLC
Local
Rocky Mountain focus
Ready when you are

Have a site, a permit hurdle, or a wild idea?

Tell us about the project. We'll respond within one business day with honest feedback on scope, feasibility, and next steps.

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