Install conduit under existing patio

[Old Coot]

I've got to "push" a couple of 3/4" conduits under an existing concrete patio slab. Distance is about eight(8) feet. Patio was (reportedly) poured over a layer of compacted coarse sand. There is clear access from both ends. I've used a pressure washer to do this job under sidewalks, but never for such a distance. Can anyone offer some advice?

[upper]

Easy deal,take a 3/4 sch 40 pvc and put a 3/4 by 1/2 male adaptor on the end.Hook up the garden hose and Water jet to the other side.Good luck Upper

[Old Coot]

upper: I shoulda figured that out, will try this weekend. Thanks for the tip.