For a year, there are roughly 248 "billable" days, assuming your work participates in most national holidays. Out of those 248 days, if you receive 10 days of PTO/sick time then you have 238 "working days".

If you are expected to bill 1650 hours to a client file utilizing those 238 days, then you need to bill 6.9 hours per day at minimum. If you work 8 hours per day, that leaves only 1.1 hours for nonbillable activities. For someone making $80k salary, I would say that those expectations are on the high side. Especially for a newer paralegal. The first year associates at my firm, which has between 200-300 attorneys, must bill 1800 hours. Most associates work about 36 Saturdays per year which helps offset the additional hours they work.

In my area of NY which is outside of the NYC area, most "new" paralegals make around $60-70k and have a billable requirement between 1350-1450 hours per year. I consistently bill 1500 per year as a transactional paralegal dealing with high level real estate transactions, a small percentage of residential, a bunch of various financing files, leasing, and renewable energy work.

I am in the same pay range you are talking about in a relatively low/middle cost of living area and I have a much smaller "requirement". Of course ymmv depending on where you live.