Since 1988, Causseaux, Hewett, & Walpole, Inc. (CHW), and our employees have provided innovation, leadership, and excellence in the fields of Civil Engineering, Surveying, Planning, and Construction Engineering Inspections. Over the last 25 years, CHW has earned the reputation as the leaders in our industry, while staying focused on excellence and delivering with integrity.. Land Development Services. Professional Services Engineering,Surveying,Planning,Construction Administration