4.5” coring concrete for drainage : HomeImprovement

I need to core a 3” deep concrete walkway and make a 4.5” hole to run 4” PVC pipes for drainage (downspout diversion).

Is it possible to use a hammer drill for this, using a diamond core bit? Or will consumer hammer drills (eg this one from Ryobi) not be powerful enough for this kind of job?

I’ve tried finding a contractor and no one will do a small job like this, so I’m thinking about just trying to do it myself.

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