PART 11

The lab results arrived on a Monday, but they did not arrive in the dramatic fashion Kenneth had imagined.

There was no triumphant phone call announcing that every mystery had been solved.

Instead, Dr.

Ruiz invited him and the investigators to a meeting and placed a careful written report on the table.

The samples from the undocumented ventilation component contained residues of an industrial chemical mixture that was not approved for use in occupied residential spaces.

The analysis identified potential inhalation hazards, but the experts cautioned that the concentrations in the material alone could not reconstruct every child’s exposure over many months.