SIA Solutions LLC (SIA) is a professional services engineering and consulting firm specializing in program and project specif ... ic solutions in Environmental Consulting, Engineering, Remediation, Radiological Services, Infrastructure Asset Management, Public-Private (P3) and Public-Public/Public-Private (P4) partnerships (P3/P4), Energy, and Water Resources. SIA executes an integrated, multi-disciplinary approach to Asset Management that includes holistic planning, development, and disposition of man-made and natural infrastructure in order to optimize utilization and value. We are headquartered in Houston, TX with offices in Washington, D.C.; Chicago, Illinois; Baltimore, Maryland; San Antonio, Texas; and, Sacramento, California. read more