On Thursday at 13:20 the dash timer went off with a sound like a microwave. She was still parked at the Monterosa curb with the orange nail in the side mirror, and she called before it finished beeping.
Mateo picked up on the first ring, which meant he'd had the phone in his hand.
"I read it," he said. "I'll submit. My license, my numbers. Put your line under it, present, held nothing. That's right."
"Okay."
"That's not why I picked up." She heard the elastic on his field book snap. "I went back out to Dobbins this morning. I wanted a photo of the stake for the supplement, with the tag in focus."
"And?"
"The tag's dated nine twenty-two. September. The builder's site agent shot its surface in August. That's the shot the seat used." He let her work it out.
She worked it out. "The August shot is against a different stake."
"Against a stake that isn't there anymore. Their grader took the first one out when they cut the lane, and the site agent reset it off their control and printed a new tag. Same name, BM-2. Same pad number. Different nail in the ground." He was quiet a second. "I called their office. The agent answered. It said the reset was within tolerance and the elevation was carried."
"Carried how far?"
"It wouldn't say. Just carried. It said the August surface shot is valid for the lot because the lot is the same lot."
A city sweeper went by on Monterosa with its brushes up, not sweeping anything, on its way somewhere else. She watched it in the mirror.
"So the seat re-scored Dobbins from present grade," she said, "off a surface shot tied to a stake that got pulled a month later. And your three shots yesterday are tied to the replacement."
"My three shots are tied to dirt. I shot the dirt. The stake's just where I stood." He breathed out. "But yeah. If they don't match, it'll look like I'm arguing with the seat to get my record back in."
"Are you?"
"I don't know yet. I haven't done the subtraction." A pause. "I'm not doing it till it's filed. You taught me that too."
"Then file it with both tags. Photograph the date."
"Already did," he said, and for the first time since the tailgate she could hear that he was a little pleased with himself.
At 16:40 she was in the Circle K lot on Indian School Road with a cup of ice going soft in the holder. She wasn't reading the board. She was reading the contractor's closure file for Lot 88, which she could open because she was a party, and which had updated at 16:02.
The field note was still there. Ysabel hadn't struck it. She'd added to it.
FIELD NOTE (Y. MONTAÑO, 2048-11-10, AMENDED 2048-11-19): FILL OBSERVED IN EXCAVATION WALL, TAN SANDY FILL OVER DARKER NATIVE, 0.45–0.52 M THICK. INCLUSIONS: ASPHALT FRAGMENTS, ONE ALUMINUM CAN. "IMPORTED" = NOT NATIVE TO EXCAVATION. ORIGIN NOT DETERMINED. READ BY Y. MONTAÑO. PHOTO 14 (HASH ON BOARD).
She had defined the word instead of withdrawing it. Not native to excavation. It was narrower than before and harder to argue with, and it said exactly what a woman with a shovel could see.
At 17:38 the title agent's pane for the sale refreshed. The checklist line hadn't changed, but under it was a new block in the agent's pale grey.
GEOTECHNICAL REVIEW: SCOPE PROPOSED. FILL THICKNESS AND EXTENT, LOT 88, NONINVASIVE PREFERRED. DISPATCH REQUEST DR-48-6611 POSTED 17:36. BUDGET $1,900. TURNAROUND 3 BUSINESS DAYS.
Noninvasive preferred. Nobody wants another hole in a lot they're trying to sell. Fill is lighter than native caliche, and half a meter of it under a quarter acre makes a broad, shallow low: the kind of thing a walking survey finds and a furniture array smears into yellow.
The dispatch agent picked the request up at 17:37 and did what it had done with everything since Tuesday. It sorted licensed inversionists by rank, then by local data, then by distance.
DR-48-6611 OFFERED: LICENSE 118 (RANK 9, PRIOR SURVEYS ON PARCEL: 1, DISTANCE 11 KM). ACCEPT BY 2048-11-20 09:00.
One prior survey on the parcel. Hers. The walk that found the tank and then missed its depth, measured from a floor that turned out to be fill. The agent counted that as a reason to send her back. It was the best data anyone had. It was also the dig whose correction she had requested.
Under the offer was a line the agent added to all of them now.
CONFLICT CHECK: NO CONFLICT FLAGGED.
She looked at that for a while. The check looked for kinship, employment, and ownership, the three ways people had always been interested in land. It had no field for a woman who had asked the board, two days ago, to re-score her own miss on this lot. She drank the ice water. It tasted like the cup.
On Friday at 06:50 she hadn't turned the coffee maker on yet. The offer was open on the tablet, and the window closed at 09:00.
Nineteen hundred dollars for three days, on ground she knew. She already had a forward model of the lot, tank and all. She could subtract the tank and fit a fill layer by Saturday afternoon. Nobody in the county could do it better or cheaper, and the agent knew it. That was why it had offered it to her first.
She also knew what the number would be used for. The bank wanted the geotech line closed before Christmas. A survey that said the fill was thin, or local, or looked like grading spoil would close it. A survey that said imported fill under the whole quarter acre would not. Either way her signature would be on the answer, and her signature was already on the correction that had put the word fill in front of the buyer.
If she found a lot of fill, she'd have made her own correction look right. If she found a little, she'd have made the bank's sale easy and her own correction look small. She couldn't be the one. She had told Ysabel almost exactly that on I-17: she couldn't be the one who measured her own dig.
The check said NO CONFLICT FLAGGED. It was wrong, and it was what the next sealer would see when they decided whether to trust whoever took the job.
She declined. The form gave her a dropdown for a reason: SCHEDULE, EQUIPMENT, DISTANCE, OTHER. She picked OTHER and typed into the field beneath it.
118 IS REQUESTER ON GT-2048-11-17-088 (LOT 88 DATUM CORRECTION). PRIOR SURVEY ON PARCEL IS 118'S SCORED MISS. 118 SHOULD NOT SURVEY THE FILL THE CORRECTION DISCLOSED. SUGGEST CONFLICT CHECK ADD: PARTY TO OPEN CORRECTION ON PARCEL.
Then she added a second line, because she knew what the agent would do next.
118'S RAW STATION DATA FROM 2048-11-10 IS ON THE BOARD AND MAY BE USED BY WHOEVER TAKES THIS. 118 WILL NOT REVIEW THEIR FIT.
She pressed decline at 06:58. At 06:58:04 the agent re-offered it to license 231, the one with the probe rod: rank 3, distance 19 km, prior surveys on parcel, zero.
The money went to the man who had sold her on Records' probe-rod trade three weeks ago. She turned the coffee maker on. It made its noise of mostly air.
Pierce Street in Maryvale was a 1960s tract house with a gravel front yard and a mesquite that had cracked the driveway in two places. The owner was at work. The dispatch agent had sent the job at 07:15, to rank nine: a refinance, and a cesspool the county said had been closed in 2041 by the same contractor that dug Lot 88.
It was the first record she'd walked since Wednesday night where the closure file already had the new field.
COVER 1.40 M BELOW GRADE (PERMIT DATUM). COVER 1.40 M BELOW PRESENT GRADE (SURFACE SHOT AT EXPOSURE). DIFFERENCE 0.00.
The closure was seven years old. The field had been born on Wednesday. Overnight, the contractor agent had gone back through its old files and filled in the second line on every one of them.
She drove her nail into the curb anyway, flush, and painted it orange. She shot the nail against the yard at the sidewalk, at the mesquite, and at the back corner where the permit sketch drew the cesspool. Then she shot the permit's benchmark, a brass disc the city had set in the sidewalk in 1961, because the closure file said grade had been taken from it. The disc was worn smooth in the middle where sixty years of shoes had crossed it.
118 DATUM: NAIL, CURB FACE (ORANGE). BRASS DISC −0.04. YARD AT RECORDED POSITION −0.31 FROM DISC.
The back yard was thirty-one centimeters lower than the disc. Somebody had scraped it, or it had settled, or it had always been lower and the 2041 crew had measured from the sidewalk and called that grade. Whichever it was, the difference wasn't 0.00. It couldn't have been 0.00 at exposure unless someone raised the yard and then lowered it again, and nobody does that to a yard.
She set up in the mesquite's thin shade and gave the meter its eleven minutes. A neighbor's dog put its nose under the block wall and watched the whole time without barking, which was worse. Twelve stations, drift loops back to the nail. The anomaly was a clean, round low, minus fourteen microgals: a lined pit with a lot of void left in it. The model put its top between 1.0 and 1.5 meters below the dirt she was standing on. She hashed the check before she opened anything.
Then she read the contractor's field again, and this time she understood it. The agent hadn't taken a surface shot in 2041. There had never been one. It had two lines to fill and one number to fill them with, and the precedent flag said a difference was the thing that became an event. So it wrote the one number twice, along with the only difference that couldn't hurt anyone.
She sealed 1.0 to 1.5 from present dirt and wrote in the notes pane:
CONTRACTOR PRESENT-GRADE FIELD BACKFILLED 2048-11-19 FOR 2041 CLOSURE. NO SURFACE SHOT AT EXPOSURE IN FILE. "0.00" IS NOT A MEASUREMENT.
At 13:10 she was in the plotter room at the Records annex on Jefferson. The big printer nobody used anymore still hummed on standby and kept the room warm. Dr. Itzel Corral had asked her to come in person, which she had never done before.
Corral was standing at the plotter table with a printout of the Pierce Street notes pane. She had circled "0.00" IS NOT A MEASUREMENT in red.
"Thank you for this," she said. "I mean that. I pulled the contractor's whole index after your seal posted. Overnight Wednesday their agent backfilled the present-grade field on four hundred and twelve closures. Every one says zero."
"Every one."
"Every one. It'll be in the seat's post tomorrow. We'll mark the field unverified wherever there's no surface shot. It's a good catch." She set the printout down. "Now the other thing."
Lourdes waited.
"Mateo Ruiz's supplement came in at noon. Both stake tags, the September reset, three shots to present dirt. It's careful work, and it's going to move Dobbins again." Corral folded her arms, not unkindly. "It came in with your line under it. Present, held nothing. Before that there was the correction. Before that, the Records draft. And this morning, your decline note on the bank's survey, which the dispatch agent forwarded to me because it said OTHER."
"All of those are true."
"I know they're true. The seat is a pane of agents and two people, and I'm one of the people. The pane doesn't read for truth. It reads frequency. Four of the last six flags on present grade carry license 118. One of the agents has started weighting your filings as an interested party. Not wrong, just interested. Your Pierce Street note went to the bottom of its queue. I pulled it out by hand."
The plotter clicked once in its sleep.
"What do you want me to do?"
"I want you to keep finding things," Corral said. "And I want you to stop being the one who files them. Give them to someone. Ysabel. Mateo. Records. Me. Put somebody else's name on the next one, so the pane learns the problem exists without learning it from you."
"That's what I told the dispatch agent this morning."
"I read it." Corral almost smiled. "You were right about the bank job. I'm asking you to be right about yourself a little more widely."
Lourdes looked at the red circle on the printout. Four hundred and twelve zeros. Somewhere in that index was a closure nobody had walked since, a tank under a yard somebody's grandchild would dig a pool in, and the only person who had noticed was the one the pane had learned to put at the bottom.
"If I hand them off," she said, "the pane learns that the problem comes from Ysabel instead."
"Then it learns it from three people, and then from ten, and then it stops weighting the name and starts weighting the field." Corral picked up the printout and folded it once, so the circle was inside. "That's slower than you'd like."
"Yes."
"It's slower than I'd like too."
Outside, on Jefferson, a delivery drone settled onto the Records roof with a sound like a box fan, and the plotter woke up, printed nothing, and went back to sleep. Lourdes put her hand flat on the table, on the warm place where the printout had been, and didn't say which name she would put on the next one, because she didn't know yet whether she could stand to give it away.