Civil-Environmental Engineering

Design Types

Gravel Filled Trench

Gravity Flow (shown), or Pressure Dosed

Compact Bed System

Gravelless (shown), or Gravel Filled

Bottomless Sand Filter

Raised Bed (shown), or Recessed

Butte County Certified Designer

On-Site Wastewater Treatment

Residential Systems

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

Addtional Services

Slope & Grade Survey

Determine initial location and layout

Soil Classification

Establish acceptability of soil per

county regulations

Percolation Testing

Prove soil acceptance rate

(e.g. for system sizing)

Secondary Treatment System Textile (shown), or Peat Media

Groundwater Separation Certification

Wet season depth-to-water monitoring