Have you tried filling the pier with sand? That may do the trick.
You may still need to isolate the pier by cutting the concrete. If so, remove the pier and as much stuff as possible. Cover everything with plastic drop clothes and then make a tent over the work area from more drop clothes. Use a concrete saw to cut away what's necessary. I would say two inches should do it. A shop vac with the nozzle held near the cutting device will help to keep the dust down, too.
I would also consider sacrificing the conduit. If the conduit is actually too large and you have plenty of room with all of the wires installed, you may be able to pull a slightly smaller piece of conduit through. As long as you have access to the area where the two pieces need to be sealed it should be an easy fix. However, if you can get to the cut off point on the conduit then you should be able to marry a new piece in place.
Next time, if ever, just remind the contractor that he's working for you and he will follow your instructions or he can take his concrete and let it harden in his truck!!
Personally, I think it's more savageable than you believe. It WILL take some hard work, but, it's not impossible.
By the way, did you ever consider mixing your own? Yes, it would have taken some time and been a back breaker of a job, but, it's not impossible.
CS
sbf
-------------------- Steve Forbes
6.25" f/15 Mogey/NASA refractor on GOTO GEM
6" f/15 Jaegers refractor on GOTO GEM
5.1" f/8 Burgess on CG-5 w/GOTONOVA
4" f/15 Jaegers on ORION ATLAS GOTO
2x 6" f/6 Edmund Palomar reflectors on GEMs w/ RA and DEC drives
2x 4-1/4" Edmund Palomar Jr. reflectors on GEMS w/ RA drives, (all circa 1965 - 69)
3" Edmund reflector on "EQ" mount from @1963
4" Criterion reflector with "EQ" mount from @1956.
150mm f/12 MAK w/iOptron Mini Tower
Lots of other stuff, too!
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Re: How not to build a pier footer!
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