Environmental Services

As a service business, Alliance distinguishes itself by satisfying our client's needs by getting the job done, no matter how difficult the technical or environmental challenges. Our team of experienced professionals is committed to providing quality, responsive, and cost-competitive services, and to continue to diversify our core business to grow with this challenge.

HDH Associates, P.C. is a full service Architectural & Engineering firm specializing in roofing & waterproofing, additions, renovations, & restorations. Services: pre-planning/feasibility studies, design & contract document preparation, construction administration, & quality assurance observation

Mattern & Craig offers civil and sanitary engineering services to public, corporate and governmental agencies. It was founded in 1978 by J. Wayne Craig and E. K. Mattern. The firm s services include drainage improvement, culvert replacement, floodwall design, computer modeling, permitting and design of flood damage repairs. Its general water and wastewater management services include preliminary engineering, construction administration, well development design, flow monitoring, smoke testing and the preparation of operation and maintenance manuals. Mattern & Craig also provides deck investigation, cost estimation, bidding assistance, construction monitoring, specification preparation, load rating, bridge widening and repair, and deck and superstructure replacement services. Its clients include the Scott County Public Service Authority, Virginia Department of Transportation, University of North Carolina at Asheville, Tennessee Department of Transportation and Bristol Virginia Utilities. Mattern & Craig maintains an office in Roanoke, Va.