26 HT25 - SAFETY JOBSITE CLASSIFICATION Have service shut down while work is in progress. Have electric company test lines before returning them to service. In addition to positioning equipment upwind from gas lines, use one or both of these methods. Once classified, precautions appropriate for jobsite must be taken. Expose lines by careful hand digging or soft excavation. Expose line by careful hand digging or soft excavation. Have gas shut off while work is in progress. Have gas company test lines before returning them to service. Use one or both of these methods. Natural Gas Jobsite Precautions Applying Precautions Electric Jobsite Precautions p