Because natural gas lines carry highly pressurized, flammable material, their precise locations must be made extremely clear before any sidewalk demolition occurs. These markings are painted bright yellow in accordance with national utility standards and are typically accompanied by the utility company name or letters indicating the pipe's depth. Contractors must exercise extreme caution, utilizing hand-digging methods exclusively when working within the designated safety buffer zone near these marked lines. Accidentally puncturing a gas service line can trigger immediate evacuations, massive street closures, and catastrophic explosions, making gas line accuracy a top priority.
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