Pennoni Associates

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Established in 1952, Patton Harris Rust & Associates is a civil engineering and land surveying firm that serves clients throughout the Middle Atlantic States. The firm employs more than 450 staff members. Also known as PHR+A, it provides site development, landscape architecture and planning solutions. Patton Harris Rust & Associates offers construction monitoring, auditing, geotechnical engineering, marketing and accounting services. In addition, the firm conducts feasibility studies. It caters to the needs of nonprofit organizations, government agencies and private sector customers in the transportation and education industries. Patton Harris Rust & Associates develops airports, schools and offices. The company has served the City of Alexandria in Virginia.