The California
rules have different sections. Q3 covers the requirements for an EIT waiver. Q5 covers the requirements for admission to the PE exam. There is a slight -- but important -- difference between the two sections in the way they describe the experience requirements.
In Q3, it says you can qualify for an EIT waiver with an ABET-accredited engineering BS degree
and 15+ years of "qualifying work experience". This term explicitly includes the word "work". So the term "qualifying work experience" means exactly what it says: it refers to work experience specifically.
In Q5, it says you can qualify for admission to the PE exam with 6+ years of "qualifying experience". This is a different term, because it omits the word "work". The term "qualifying experience" is more ambiguous and flexible: in fact, Q5 says that it can mean either work experience, or a combination of college (up to 4 years) and work experience.
Since you are applying for an EIT waiver under the rules of Q3, you are stuck with the less flexible term of "qualifying work experience". That means work experience specifically.
If you eventually apply for the PE exam under the rules of Q5, then you will have more flexibility, and will be able to apply your college experience towards the "qualifying experience" requirement. You won't really need it though, since the experience requirements for the EIT waiver are much more rigorous than those for the PE exam itself.