第13章 Mass Balance

They took her suit the next morning, and they did it politely, with a receipt, and they put her survey access into review, which is what a colony calls it when it has decided to wait for you to stop being a problem. Delyth had expected it. What she had not expected was how much of her would go with the suit. A surveyor without a suit is a person with opinions, and opinions do not keep ten thousand people alive, and for two days she sat in the survey office doing make-work and watching the storm build on the eastern horizon and feeling the arithmetic of her own uselessness close around her. On the second day she stopped sitting and started counting. The numbers lived on the public terminal where all the colony's water numbers lived, and they were, by design, boring. Highline reported its progress the way a utility reported it, in tonnes of water sublimated per sol and hectares of atmosphere enriched, and the colony read those numbers the way a person reads a bill, with the eyes of the trusting. Delyth read them the way she read a radargram. She took the reported sublimation rate and multiplied it by the days since the program began and got the total mass of water Highline claimed to have lifted off the ground and into the sky. Then she took the atmospheric humidity record, the honest one, the one nobody bothered to edit because nobody had ever connected it to anything, and she multiplied the observed increase in the sky by the mass of the atmosphere, and she got the water that was actually in the air. The two numbers did not match. They had never matched. The sky was holding almost none of what the program claimed to be lifting into it, and that was not a scandal by itself, because a thin cold atmosphere loses water to space and everyone had always known it. The scandal was on the other side of the ledger, in the ground. The pump logs for the eastern substation, the ones Wim had pulled and she had copied, showed water moving into K-7 at a rate that very nearly equaled the difference. Highline was not lifting water into the sky and losing it to space. Highline was lifting water out of the shallow aquifer, carrying it across the basin, and putting it back into the ground in a different place, where it could be counted as progress on the way out and sold as product at the end of the line. It was the oldest accounting trick there was, and it worked because it never had to fool an accountant. It only had to fool the neighbors. She checked her own work the way she checked everything, by attacking it. She tried to make the numbers innocent. She let the sublimation losses run as high as the most pessimistic paper allowed, and the gap stayed. She assumed the tracer had come in on a drill bit, and the isotope chemistry said no. She assumed the humidity record was faulty, and she cross-checked it against two other instruments and they agreed with each other and disagreed with the program. By the end of the second afternoon she had done everything a good surveyor does before she accuses the ground of lying, and the ground had passed every test, and the documents had failed all of them, and there was nothing left in the file but the truth, waiting to be written down by hand. She wrote it up in her own hand, in her own notebook, in the plain language of a surveyor: here is what the program says it moves, here is what the sky holds, here is what the pumps move, here is where the tracer goes, here is the station under the hole, here are six names and a date. She did not accuse anyone of anything. She laid the numbers side by side and let them accuse each other. Halfway through the second page her door chimed, and it was Sabra, still in her dust-caked suit from the eastern pad, and Sabra did not sit down. "They're going to finish it," Sabra said. "The fill. They've got the schedule moved up. They're going to pump the last of it during the front, when the sky is down and nobody's flying and nobody's watching, and when it clears there won't be a cavity to point at. There won't be a station. It'll all be ice." Delyth set down her pen and looked at her friend's face and read everything written there, which was fear and shame and something that had not yet made up its mind to be courage. "How do you know the schedule?" "Because I'm the one running it." Sabra's jaw was tight. "They moved me to Godwit nights for a reason. I drill, I pump, I log nothing. I keep quiet and my contract gets renewed and my brother keeps his posting. That's the deal, and I took it, and I've been taking it for a month, and I'm done taking it." She pulled a folded sheet from her suit and put it on the desk. "That's the night schedule. That's the tank manifest. That's every liter they've moved since the collapse. You wanted a chain of custody. There's one, and my name's on every line of it, and I'd rather be in the file than out of the room when they read it." Delyth looked at the sheet and did not touch it yet. "If you're on that line, you're finished here too." "I know." "You could have just kept quiet." "I could have." Sabra looked at the window, where the storm had begun to lay a brown film along the glass. "But somebody's going to stand in that room someday and read the names on the wall, and I don't want them to read mine and wonder." She left, and the door clicked behind her, and Delyth sat with the manifest in front of her and the storm thickening outside and understood that she had run out of time in a way that had nothing to do with the company's machines. The station was going to be sealed during the front. The evidence she had left in it, the module, the survey sheets, the native water genus the company had not yet found, all of it was going to be buried under a hundred tonnes of frozen water, and the hole that led down to it was going to be capped, and the whole thing was going to disappear into the ice as though it had never been anything but a cavity with a poetic name. She could not stop the fill. She had no suit, no access, no authority. What she had was a chart and a clock and a friend who had just handed her the one thing the company could not explain away. She looked at the manifest and at the storm gathering on the ridge and understood that the company had made the same mistake every institution makes, which is to assume that the person who knows the most is the person easiest to control. They had spent a month moving water in the dark, and the whole scheme rested on a single assumption, which was that no one would ever stand in a room with the schedule and the pumps and the ice and put the three of them on the same page. But she had a photograph and a timestamp and a sample, and she had a friend who was willing to be in the file, and she had, on the manifest in front of her, the exact hour the last tank was scheduled to move. She picked up the manifest and began to read it the way she read everything, which is to say, one line at a time, until the whole of it surrendered. ---