Jenkins Academy of Applied Technology

Excavation and Trenching — Regulatory crosswalk

Excavation and Trenching · v1.0.0 · October 22, 2026

Course developed by Todd Jerome Jenkins, MS, CSP.

Core construction Subpart P knowledge and 1926.21(b)(2) instruction. Actual soil analysis, protective design, installation, site controls, inspections and verified task skills remain employer responsibilities.

Area	Basis	Lessons	Treatment and separate evidence
Recognize the excavation and responsible people	1926.650; 1926.21(b)(2); 1926.1201(b)(1)	scope	Identify excavation hazards and the competent person’s authority. Identify the excavation, assigned competent person, corrective authority and work limits before assignment.
Plan the dig and locate underground services	1926.651(a)–(b)	utilities	Confirm utilities and surface hazards before excavation. Review the actual locate responses, field verification method, unresolved services and support arrangements.
Understand soil classification and changing conditions	1926 Subpart P Appendix A; 1926.652(b)–(c)	soil	Recognize the evidence used to classify soil for protective-system selection. Review actual visual and manual evidence with the competent person, including factors that rule out Type A.
Select a valid cave-in protection method	1926.652(a)–(b); 1926 Subpart P Appendix B	protection	Apply the protection trigger and recognize slope limits. Identify the selected design route, protective limits and actual configuration; do not approve a cut from depth alone.
Use shoring and shields within their design	1926.650(b); 1926.652(c), (d), (g); Appendices C and D	systems	Distinguish support from shielding and follow the actual data. Locate the actual written design/data, confirm its limits and explain how damaged components are withheld from use.
Control installation, movement and removal	1926.652(e)–(g); 1926.651(e)	installation	Recognize safe sequencing and the limits below a protective system. Review the actual protected installation/movement/removal sequence and any proposed below-system excavation.
Provide safe entry, exit and crossings	1926.651(c), (l); 1926.501(b)(7); 1926.1053(b)(1)	access	Apply trench egress and excavation crossing requirements. Measure the longest lateral travel to a safe exit and review protected transitions, ramps and crossings.
Control spoil, equipment and falling loads	1926.651(d)–(f), (j); 1926.652(f); Appendix B(c)(3)	loads	Prevent edge loads and materials from endangering workers. Check spoil retention, actual surcharge limits, loading exclusion zones, visibility controls and public traffic exposure.
Control water and protect nearby structures	1926.651(h)–(i)	water	Recognize water and structural conditions that require action before work. Review water control, pump monitoring, drainage and the actual support basis for adjacent structures.
Test and control hazardous air	1926.651(g); 1926.1201(b)(1)	atmosphere	Apply atmospheric testing triggers and ongoing controls. Identify expected contaminants, the testing plan, acceptable conditions, control checks and the actual alarm response.
Inspect before work and after changes	1926.651(k); 1926 Subpart P Appendices A and B	inspection	Recognize inspection triggers and remove workers from hazards. Walk through a safe inspection scenario, identify stop-work conditions and explain what must be verified before reentry.
Verify workplace skills and prepare for emergencies	1926.21(b)(2); 1926.650(b); 1926.651(g)(2), (k)	training	Connect knowledge training to safe task performance and emergency response. Complete employer task and skill verification, review emergency contacts and explain why unplanned rescue entry is unsafe.

Sources

Federal sources reviewed October 22, 2026. Confirm the actual work, jurisdiction and applicable additional requirements. OSHA guidance supports planning; it is distinguished from mandatory standard text.