My employer (in Austin) needs a ~1200' trench about 18" deep to bury a 12-strand fiber optic cable. Electrical/water/irrigation lines would need to be avoided. Any advice on who could do the dig and backfill, and possibly even lay the cable, for a decent price? One company gave us a quote of $10k just for the trenching but that seems high. Is this a day labor type of deal or should it be left to a professional (my boss would probably prefer the latter)?