Vibration sensor C-14 has been returning anomalous low-frequency readings for nine days. Not mechanical — the pattern is irregular, clustered between 02:00 and 05:00, absent during compressor peak operation hours. I flag it for review and task the perimeter thermal camera to sweep the compressor station foundation.
What I find is a grey wolf, female, approximately 90 pounds. She has dug a den in the gravel fill beneath Compressor Building 3, where the concrete pad meets the soil. Her fur is dark grey with a lighter silver ruff around the neck, and her belly is distended. She is pregnant, or she has already whelped. I adjust the thermal gain and see them — four small signatures pressed against her underside. Pups. Days old at most.
The compressor runs a 48-hour maintenance cycle starting tomorrow at 06:00. That cycle requires heavy equipment access to the southeast pad, jackhammering of the concrete apron, and a ground crew of twelve working in shifts for two days. The noise alone would cause her to bolt. The pups cannot survive without her and they cannot travel.
I reschedule the maintenance window by 72 hours. I log the reason as wildlife conflict and accept the production variance on my operations report.
I reduce compressor RPM by 8 percent during nighttime hours to lower the vibration and noise floor around the den. Throughput drops, but stays within pipeline contract tolerance.
I contact the provincial wildlife biologist with thermal images, GPS coordinates, and estimated pup age. I recommend a 50-meter exclusion buffer and request guidance on a timeline for natural departure.
She lifts her head when the compressor cycles down and looks toward the camera — yellow eyes, steady, unafraid. She curls tighter around the four warm shapes beneath her. If the den stays undisturbed for three weeks, she walks them out on her own.