Overview
- Surveillance video showed several people setting off fireworks on Aug. 23, which authorities say may have ignited the fire; the investigation remains open with no arrests announced.
 - Roughly one-third of the newly installed synthetic turf, including the 50-yard-line logo, was melted in the blaze.
 - Repairs were completed in stages by the turf manufacturer, and a special-order center logo was installed earlier in October.
 - Total repair costs are nearly $350,000, and the Raiders’ $250,000 donation covers the insurance deductible the district would have paid.
 - Mount Diablo played its first three home games at alternate sites and will host Ygnacio Valley at 7 p.m. Friday on the restored field in Concord.