A Scottsdale-based engineering company is facing push back from its creditors who say terms of a proposed bankruptcy loan are insufficient.

Nuverra Environmental Solutions has structured $44 million in loans as part of its debt reduction plan, but creditors said the terms do not provide enough cash to note holders.

A bankruptcy court judge in Delaware is expected to hear arguments this week.

Nuverra filed for bankruptcy protection in May with a goal to eliminate about $500 million in debt overall.