Trumbull Corporation
Mr. Richard Doyle
1020 Lebanon Church Road
Pittsburgh, PA 15227
412-462-9300

Most recent projects completed:

• Reconstruction of Cuyahoga River Bridges, Ohio Turnpike Commission, Cleveland, Ohio
• Fern Valley Disposal, Elizabeth, Pittsburgh, Pennsylvania
• UPMC—Shadyside, Pittsburgh, Pennsylvania
• UPMC—Southside, Pittsburgh, Pennsylvania
• Duquesne Light Power Plant, Harmar and Elrama Stations
• I-80—Mercer and Venango Counties
• Rostraver Airport Runway, Westmoreland County

Marucci & Gaffney
Mr. Bill Gaffney
18 Hogue Street
Youngstown, OH 44502
330-743-8170

Most recent projects completed:

• Kline's Farm Project and Little Squaw Creek Interceptor, Trumbull County, Liberty Township, Ohio
• Sugar Creek Dredging, Trumbull County, Ohio

Mashuda Corporation
Mr. Ralph Mashuda
21101 Route 19
Cranberry Twp., PA 16066
724-452-8330

Most recent projects completed:

• Mon/Fayette Expressway, SR 0043, Section 52F2. Washington County, Pennsylvania
• Ohio Township Municipal Complex, Allegheny County, Sewickley, Pennsylvania

Ryan Inc. Central
Mr. Mike Fanning
P.O. Box 206
Janesville, WI 53547
301-874-5119

Most recent projects completed:

• Hampshire Greens Phase III & IIIB (70 acre parcel), Silver Spring, Maryland

Sevenson, Inc.
Mr. Dave Stover
100 Rock Springs Road
Delmont, PA 15626
724-468-3377 ext. 222

Most recent projects completed:

• Former Koppers Facility (Environmental Remediation), Salisbury, Maryland
• Former Koppers Facility (Environmental Remediation), Charleston, South Carolina