Riverwalk Off-Site Utility Installation “Walking on Water” — Terra crossed the Las Vegas wash twice to install new water, twice to install new sewer (force main), and once for the power & telecommunications. All to feed a 300-unit subdivision. Terra is no stranger to ground water mitigation during construction. Terra has constructed 16′ deep sewer and storm drain systems in marsh conditions where ground water was encountered at 2′ depths. All construction utilized de-watering systems to maintain a safe installation environment.