Obsidian Onsite Services, Inc. 

Specializing in Design/Build/Operate Services

for Alternative Onsite Wastewater Systems!

 We continue to provide Engineering & Design Services for 

 Site Development 

 Stormwater Management 

 Soils & Foundation 


Obsidian Onsite Services, Inc.

P.O. Box 100
Tappahannock, VA‚  22560

(804) 347-7176

fax (208) 978-1458


For control panels and UV Sterilizers, go to:     www.o2si.net

Joel S. Pinnix, PE

Licensed in Virginia & North Carolina

B.S., Civil Engineering - Construction Option

1983 North Carolina State University, Raleigh, NC

MBA - 1996 Averett University, Danville, VA

Mr. Pinnix has been actively engaged in engineering and construction services projects since 1983. His experience includes:

  • Geotechnical Engineering
  • Environmental Engineering
  • Wastewater Design
  • Structural and Condition Assessments
  • Construction Management
  • Project Inspection