on your side; WHISTLEBLOWER; Holes of headaches; Road construction left a New Prague neighborhood plagued by shoddy concrete work.(NEWS)

Byline: LORA PABST; STAFF WRITER

Within months of getting a new driveway in 2007, Ken and Sally Tupy of New Prague watched the pavement break out in small craters about the size of dimes and quarters. Every time they look, the craters have multiplied, the result of substandard concrete work by a private contractor.

But the Tupys are also frustrated with the city of New Prague, which had hired the contractor to repave the street and the entries to 42 driveways along Lexington Avenue in 2007. The Tupys are among a handful of homeowners who used the same contractor to repave their entire driveways, but found the city took responsibility for its contractor's …