Identifying Rows To Delete Based On Multiple Conditions?

Maybe this has been taken care of in another thread, but still:

ROW ID NUM OCC K OCC I
1 222222 0 0
2 222222 0 0
3
4 333333 0 0
5 333333 0 0
6 333333 0 0
7
8 444455 1 1
9 444455 1 1

I have a situation like above, but what I want to do is:

=FOR(ROW1:ROW9, IF COUNT ROWS(ID_NUM)>= 2,

(create name for set?)

AND

IF OCC_K AND OR OCC_I VALUES >= 0,

THEN DELETE ROWS(within set) >=2

Or more simply:

If there are rows with multiple Accident ID numbers, name that set,
and if OCC_K and/or OCC_K values are BOTH >= 0,
then delete all duplicate rows?

Yes I figure there needs to be some way to distinguish Row 1 from Row 2, (flagging one of the two?) so that ROW 2 can be identified, and similarly with Row 4 from Row 5 from Row 6, but the general flow of commands is what I'm trying to get at.

Is it also possible to use AND and OR in the same line? Or BOTH?

(I have other variations on this that I also like to ask about, such as multiple rows within a set that meet certain conditions that are identified in a different field, but for now this is a simpler version.)

I would like to think I'm not going to need a macro, and that I can do this in a Formula.