Download Subcontractor Application


Safety Manual Downloads:

View or Download Safety Manual



View or Download Safety Manual - Section 1



View or Download Safety Manual - Section 2



View or Download Safety Manual - Section 3



Downing Diversified utilizes subcontractors to perform specialized operations on our projects. Our company is growing and our service area is expanding. We qualify subcontractors based upon their experience and safety record.

Interested subcontractors please complete and submit the following:

  • Subcontractor application with all required backup information

  • Certificate of Insurance (COI) that names our company as additional insured. COI must include proof of workers compensation coverage.
  • All subcontractors are required to review and agree to follow the safety program implemented by Downing Diversified or submit their company's  program to Downing Diversified for approval prior to working on any project.


Please submit your completed package along with your company background information and references to: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

Contact Info:

Main Phone: 360-673-4433
Fax: 360-673-4466

Jimmy Downing, Estimates

Diana Downing, Operations

Jaimie Hinckle, Office Manager



447 N. First Street Ste 250 - Physical
P.O. Box 33 - Mailing
Kalama, WA 98625


Our Services
  • Gas Bores
  • Fiber Optics
  • Solid and Cobble Rock Drilling
  • Sanitary Sewer Systems
  • Power and Waterline Installation
  • River, Creek and Wetland Bores
  • Road, Driveway and Freeway Crossings
  • Fusion Certified
  • Vacuum Services