With both OSHA and Washington State Specific Material, the information presented in this App with allow Employers to Certify Competent Persons. Though the App is free, The Certificates cost $99 per employee. Upon successful completion of training materials, a scenario, completion of an inspection form, and a test students will receive Certification for Trenching Competent Person. This App does not require a subscription, a Learning Management System or any other hidden fees.