For Freshman selection criteria, SLO lists the following about the GPA calculation:
GPA: For the purposes of your application, we’ll consider your 9th-11th grade weighted GPA. That number is calculated from college-prep coursework as designated on your application. Weight is granted for courses designated as “honors,” “college-level,” “advanced placement” or “international baccalaureate” for up to eight semesters.
If they calculate and use the Unweighted and Weighted Uncapped GPA, I cannot say. Since the GPA information posted correlates with the GPA posted in their Freshman profiles which is the SLO GPA 9-11th with the 8 semester cap. They do review all grades and courses to determine HS rigor beyond the 8 semesters used in the calculation.
This would be a question for admissions.