About ninety percent.
The tank itself weighed roughly sixty kilograms. The water added about four hundred fifty. Total loaded weight was a little above five hundred kilograms.
"What was the stand rated for?"
Aaron handed her the original installation certificate.
Eight hundred kilograms, with additional design safety factors.
Priya nodded. "This did not collapse because the tank was too heavy."
She pointed at the diagonal brace. "Someone weakened lateral stability."
Ortiz asked whether weather could have caused the cut.
No.
Corrosion?
No.
Accidental impact?
Not in that pattern.
Priya showed them the lower brace. A saw cut penetrated more than halfway through the steel tube and then stopped. The upper bolt had been removed completely.
That combination allowed the frame to remain standing under static load while becoming vulnerable to sideways movement.
"Would the person who did this know it could fail?" Ortiz asked.
"Yes."
"Could they control exactly when?"
"No."
Aaron looked toward the crushed chair.
That uncertainty was worse than he expected. Denise did not need to know when the tank would fall. She only needed to accept the possibility that it might fall while Aaron was beside it.
Priya then examined the exposed pipe.
Samuel brought a utility locator and traced it. The line crossed under Aaron's fence, ran parallel to the boundary, and disappeared beneath Denise's new stone patio.
The approved drawings showed nothing there.
A Blue Current Outdoor operations manager named Clint Morrow arrived after lunch.
At first Clint called the pipe old drainage.
Samuel showed him the manufacturing date printed on the PVC. The pipe had been made the previous year.
Clint stopped calling it old.
He said a subcontractor may have installed a temporary discharge line during construction.
"Temporary?" Samuel asked.
"Possibly."
"It's glued."
"Temporary installations can still be glued."
Samuel asked where it went.
Clint said he did not know.
The city authorized a small internal camera inspection from Aaron's side. A flexible scope traveled beneath the fence. The interior showed residue consistent with chemically treated pool water.
Then the camera reached a junction.
One branch ran toward Denise's pool equipment.
Another entered a buried box beneath her patio.
"What's that?" Samuel asked.
Clint said nothing.
Denise called it an inspection chamber.
Samuel asked, "For what?"
No answer.
The city restricted Denise's pool discharge system until the plumbing could be verified.
She exploded.
"You cannot shut my pool because his tank fell over."
Samuel remained calm. "I'm not. I'm restricting an unpermitted line connected to your pool."
"Professionals installed it."
"Professionals still need approved plans."
Aaron watched her anger. It did not look like surprise. It looked like control slipping.
That evening Greg forwarded another set of board records.
Two weeks before the collapse, Denise had asked the HOA landscaping contractor to quote removal of Aaron's tank and pergola under "emergency common-area access."
The contractor refused because Aaron's property was private and no board resolution existed.
Denise contacted another company: Evergreen Site Response.
Their quote included:
Remove compromised tank structure.
Demolish adjacent pergola if required for access.
Excavate approximately fifteen feet along east boundary.
Expose and repair subsurface drainage.
Restore grade.
The quote was dated nine days before the tank fell.
Aaron called Greg.
"How did they know about subsurface drainage?"
"I don't know."
"Did anyone inspect?"
"Not through the HOA."
Aaron sent the document to police.
By Tuesday, the city obtained permission to excavate a narrow test area on Denise's side.
Beneath the patio was a homemade collection sump.
Her pool overflow line, filter backwash, patio drains, and part of her roof drainage all fed into it.
From there, the water discharged through the pipe beneath Aaron's fence.
The approved front dry well had failed an early inspection because the soil drained slowly. Correcting it properly would have required expensive excavation. Instead, someone had routed the water downhill.
Toward Aaron.
Moisture around the old tank pad had increased over the previous year. Not enough to make the steel stand fail by itself, Priya said, but enough to cause minor settlement at one corner of the concrete.
If inspectors found the hidden line, Denise could face fines, repair costs, permit problems, and possible liability for damage to Aaron's yard.
The theory became clear.
The tank sat directly above the place where the illegal discharge crossed the property line.
If the tank collapsed and the yard were declared unsafe, Denise could claim poor soil and drainage around Aaron's tank created the danger.
Then, as HOA president, she could request emergency access, excavate the area, remove the tank, expose the line, and make the drainage problem disappear under the language of safety correction.
It sounded outrageous until Aaron remembered the board minutes.
She had already tried to obtain exactly that authority.
Police found another piece of evidence in the HOA maintenance closet: a compact cordless reciprocating saw purchased one month earlier for fence repair.
The maintenance log showed Denise signed it out Saturday afternoon.
No fence work was scheduled.
When questioned, she said she planned to trim a metal garden stake.
The lab later found zinc-rich steel particles inside the saw housing consistent with galvanized material like the tank brace. The result could not prove that exact saw cut that exact support, but it matched the rest of the evidence.
Denise stopped answering investigators without counsel.
She also stopped attending board meetings.
Greg sent residents a brief notice stating that an officer had stepped aside during an active investigation. No accusation. No defense.
Aaron appreciated that.
He had grown tired of certainty arriving before evidence.
On Friday, he finally removed the crushed chair from beneath the tank after investigators cleared it. The seat was split. The back was broken. One armrest still held the faded coffee-ring stain he never sanded out.
Claire called while he carried the pieces into the garage.
"Are you okay?"
"I think so."
"Dad, you almost died."
Aaron looked toward the side yard. "Yes."
"What are you doing with the chair?"
"I don't know."
"Keep part of it."
"Why?"
"So nobody gets to make the whole thing disappear."
Aaron looked through the garage door at the exposed white pipe.
That was why the city had left it in place too.
Evidence was inconvenient.
That was exactly why it mattered.
Denise was arrested eleven days after the collapse.
The charges included trespass, criminal mischief, reckless endangerment, and offenses tied to interference with the property investigation. They were allegations, not final conclusions.