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Bryan A. Stirrat & Associates is a civil and environmental engineering company. Operational for over 20 years, the company has a team of professionals and technical support personnel that specializes in solid and hazardous waste management solutions. It offers construction management, site design and development, planning and monitoring services. Bryan A. Stirrat & Associates designs and undertakes projects for industrial, commercial and residential customers throughout the United States. The company also provides site remediation, field support, third-party review, site investigation, coordination, modeling and environmental auditing services. In addition, it offers construction services that feature documentation, field inspection, scheduling and certification. Bryan A. Stirrat & Associates maintains its corporate headquarters in Diamond Bar, Calif.