Civil-Environmental Engineering

Design Types

Butte County Certified Designer

On-Site Wastewater Treatment for

Small Community Systems and Mobile Home Parks


We custom design your system to fit your needs and circumstances, providing all plans, documents, and services for full agency approval and construction.


Gravel Filled Trench

Gravity Flow (shown), or Pressure Dosed

Slope & Grade Survey

Determine initial location and layout

Compact Bed System

Gravelless (shown), or Gravel Filled

Soil Classification

Establish soil acceptability per county regulations

Bottomless Sand Filter

Raised Bed (shown), or Recessed

Percolation Testing

Prove soil acceptance rate (system sizing)

Secondary Treatment System Textile (shown), or Peat Media

Groundwater Separation Certification

Wet season depth-to-water monitoring