Underground utility work is among the most hazardous in construction. At MPH Pipelines, safety is not a program — it's the foundation of how we operate every single day.
All trench and excavation work
No exceptions on depth over 5 feet
Safety record we're proud of
No exceptions — every project
Every MPH crew member has the authority and obligation to stop unsafe work immediately.
Underground utility construction carries serious risks — cave-ins, struck-by incidents, and utility strikes are among the leading causes of construction fatalities. MPH Pipelines takes these risks seriously through rigorous training, strict protocol adherence, and a culture where safety is every worker's responsibility.
Our crews are trained in OSHA excavation safety standards (29 CFR 1926 Subpart P), confined space protocols, and all Arizona utility notification requirements. No supervisor at MPH Pipelines will allow work to proceed when safety conditions aren't met.
Arizona Blue Stake (811) notification is required on every project without exception. We contact 811 a minimum of 3 business days before any excavation begins. Our crews are trained to recognize marked utilities, maintain safe clearance distances, and use hand tools within utility tolerance zones. No amount of schedule pressure will cause us to skip this step.
All excavations deeper than 5 feet are protected by OSHA-approved methods: shoring, trench boxes, or proper sloping/benching. A designated Competent Person inspects every excavation prior to entry and after any rain, freezing temperatures, or other soil-changing events. No worker enters an unprotected trench — ever.
All work in or adjacent to roadways follows MUTCD (Manual on Uniform Traffic Control Devices) standards. Our supervisors hold AzDOT-approved traffic control certifications. Work zones are established with proper advance warning signs, cones, channelizers, and flaggers before any excavation begins near active traffic lanes.
All heavy equipment undergoes pre-shift inspection by the operator before use each day. Equipment defects are tagged out and repaired before the machine returns to service. Operators maintain required certifications, and ground workers maintain exclusion zones around all operating equipment. Spotters are required in congested areas.
Manhole and vault entry follows OSHA Permit-Required Confined Space procedures (29 CFR 1926.1201). This includes atmospheric testing before entry, continuous monitoring during work, rescue equipment staged at the entry point, and an attendant stationed at the surface at all times. Workers are trained annually in confined space recognition and emergency procedures.
Every MPH Pipelines job site has a current Emergency Action Plan posted, with local emergency contacts, nearest hospital location, and assembly points identified. First aid kits and emergency supplies are maintained on all company vehicles. Key crew members hold current first aid and CPR certifications. Supervisors conduct quarterly emergency drill reviews.
Every crew, every morning, before work begins.
Shoring or sloping required at or before 5 feet depth.
Minimum 3-business-day advance utility locate call.