Annadel Engineering specializes in providing general Civil Engineering services.
We provide designs for grading, drainage, utility, accessibility, and much more for a variety of commercial, private, and public projects. We have successfully complete jobs throughout the bay area with a focus on the North Bay.
Over 20 years ago, Bill Boriolo went to work for his father who was a general contractor. Working on a construction site quickly instilled respect for the industry and the value of hard work. After working in the blistering sun and freezing cold, Bill quickly learned an office job as a civil engineer was the way to go. This has led him to open Annadel Engineering.

Here's a partial list of services we provide. Give us a call to discuss your project.
- Drainage and Grading Plans
- Grading Violations
- Erosion & Sediment Control Plans
- NOI Applications
- SWPPP Reports
- Driveway Encroachment Permit
- Public Improvement Plans
- Hydrology and Hydraulics Studies
- Storm Design, C.3. Provision & Hydromodification
- Site Plans
- Plot Plans
- As-Builts
- General CAD Drawing Services
- Tentative Map
- Parcel Map
- Lot Line Adjustments
Contact us today about your next project.
© 2019 Annadel Engineering | A Sonoma County CIvil Engineering Firm