Complex sentence: University project manager, Jameel Chaudhry, said rocks were dug up from the building site and used for retaining walls in place of concrete and that contractors were encouraged to purchase materials locally to reduce the carbon footprint.
Split into simpler sentences: University project manager Jameel Chaudhry said rocks were dug up from the building site and used for retaining walls in place of concrete. Contractors were encouraged to purchase materials locally to reduce the carbon footprint.