H2s (hydrogen Sulfide)

Systems that redirect rainwater and runoff away from worksites to prevent flooding and erosion. Subcontractors are often responsible for installing and maintaining these systems to meet environmental permit conditions. Failing to manage stormwater properly can result in stop-work orders and project fines.

A legal process where project proponents engage with Indigenous communities before work begins on or near their traditional lands. Subcontractors may need to pause or delay fieldwork if consultation requirements have not been met. Failing to respect this process can result in project shutdowns or permit rejections.

A documented check of equipment or structures for visible damage, corrosion, or defects — completed without disassembly. Subcontractors are often required to perform or witness EVIs before mobilising equipment on site. Results are typically recorded on inspection forms tied to client or regulatory compliance packages.

A regulatory survey that identifies and maps wetland boundaries on or near a project site. Subcontractors must respect these boundaries during ground disturbance, trenching, or equipment staging. Work within delineated areas typically requires additional permits and can trigger project delays.

A client- or prime contractor-maintained registry of pre-qualified suppliers and subcontractors eligible to bid on work. Getting onto an AVL often requires submitting safety records, insurance, and certifications in advance. Without AVL status, subcontractors are typically blocked from receiving purchase orders or contracts.

The U.S. federal agency that regulates the entry of workers, equipment, and materials across the Canadian-American border, which subcontractors must navigate when mobilising crews or hauling specialised equipment into U.S. job sites. Non-compliance with CBP requirements can result in delays at the border, seized equipment, or crews being turned away, making proper documentation and advance planning critical for cross-border field work.

When a Jobsite Incident Happens: What Field Workers Need to Know Before Signing Anything

What to do after a jobsite injury or incident, what your rights are before signing incident reports, how workers' compensation works, and how to protect yourself on multi-employer worksites.

OSHA Citations on Multi-Employer Worksites: What Subcontractors Need to Know

Learn how OSHA's multi-employer citation policy works, why subcontractors get cited for hazards they didn't create, and how to protect your company on operator-controlled job sites.

How to Read and Negotiate an Oilfield Master Service Agreement (MSA): A Subcontractor's Guide

Learn which MSA clauses actually matter for oilfield subcontractors: indemnity, insurance, payment terms, and change orders. Know what you're signing.