// Risk Intelligence
| Risk Score | 7 / 10 High |
| Facility Type | ⚠ Superfund / Contamination Site |
| Operator / Branch | Various / EPA |
| Host County | Orange County CA |
| Nearest City | Pepperell MA |
| Primary Risk Radius | 5 miles |
| Secondary Risk Radius | 25 miles |
// Strategic Significance
The McColl site in Fullerton California contains oil refinery acid waste sump materials buried in the 1940s and 1950s. The site is surrounded by residential development with homes built over contaminated soil. Hydrogen sulfide gas emissions from the buried waste created odor and health concerns for adjacent residents.
// Civilian Impact Assessment
Fullerton residents adjacent to the site experienced hydrogen sulfide gas odors and soil contamination. Orange County has densely developed residential neighborhoods adjacent to the remediated but monitored site.
// Evacuation & Shelter Guidance
Orange County residents near the McColl site should follow EPA guidance on hydrogen sulfide exposure. Cal EPA monitors ongoing remediation.