Mike Williams completing a site assessment at Cougar Park on Yale Reservoir. ​

Because we have an engineer on staff, EGSD does more commercial septic designs than most other septic designers in the area. This is for two reasons:

​1) Engineering, Architecture and Planning companies oftentimes prefer working with a licensed engineer compared to a septic designer. Engineers typically “speak the same language” as other consultants and understand the big picture of the project.

2) State law requires an engineer (and not a septic designer) to perform the designs of all systems with a daily flow greater than 3,500 gallons per day (LOSS or Large On-Site Sewage Systems). Finding an engineer who specializes in septic systems is difficult, as most engineers (even those who design other wastewater systems) don’t know the septic industry very well.

Some commercial projects we’ve worked on include the following:

• Fargher Lakehouse Restaurant (Yacolt, WA)
• Lewisville Park (Battle Ground, WA)
• Amboy Middle School (Amboy, WA)
• Yacolt Elementary School (Yacolt, WA)
• Speelyai Park (Merwin Reservoir)
• Cougar Park (Yale Reservoir)
• North Country EMS/Clark County Fire District 13 (Yacolt, WA)
• Ike Kinswa State Park (Mossyrock, WA)
• Daybreak Youth Addiction Treatment Facility (Brush Prairie, WA)​

• Pioneer Primary and Middle Schools (Shelton, WA)
• Lacamas Conference Center (Camas, WA)
• Grove Field Airport (Camas, WA)
• Lewis River Camp (Yacolt, WA)
• Venersborg Community Center (Battle Ground, WA)
• Many Wineries (Heisen House, Windy Hill, Pomeroy Cellars, Village Vineyard, Confluence, Dolio, Rezabek, etc)
• Many Church Projects
• Many Adult Family Care Homes

Some of our commercial clients include:

• Washington State Department of Transportation
• Washington State Parks
• Battle Ground School District
• Clark County Parks Department​

• Clark County Public Works
• Port of Camas/Washougal
• PacifiCorp

Very knowledgeable engineers. I saved a ton of money and got a better system than what was previously recommended. Courteous folks to work with from the first phone call until completion. True professionals. Very highly recommended.
Geary Ferguson