Story perspectives

Soil Vapor Hints at Remains; Search Yields None

5/10/2026

Summary

Story summary

Investigators said soil-vapor analysis at Susan Flores’s Arroyo Grande home indicated human remains, yet the May 6-9, 2026 search by the Sheriff’s Office found none.
Experts Tim Nelligan and Steve Hoyt detected compounds in the soil vapor, but the test did not confirm the remains were Kristin Smart’s.
Officials used ground-penetrating radar, moved yard items, and said warrants may be needed for excavation while Smart’s family thanked the community and stayed hopeful.

History

Historical Context

The 1996 disappearance of Cal Poly freshman Kristin Smart, declared legally dead in 2002, prompted California’s 1998 Smart Campus Security Act and a $2.5 million, two-decade investigation by the San Luis Obispo County Sheriff’s Office. After cadaver-dog and radar searches from 2011 onward, the May 2026 ground-penetrating-radar sweep of Susan Flores’ Arroyo Grande home continues that long-running effort.

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Story summary

Investigators said soil-vapor analysis at Susan Flores’s Arroyo Grande home indicated human remains, yet the May 6-9, 2026 search by the Sheriff’s Office found none.
Experts Tim Nelligan and Steve Hoyt detected compounds in the soil vapor, but the test did not confirm the remains were Kristin Smart’s.
Officials used ground-penetrating radar, moved yard items, and said warrants may be needed for excavation while Smart’s family thanked the community and stayed hopeful.

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