CAROLLO ENGINEERS INC

Carollo Engineers Inc. specializes in the design and installation of wastewater treatment infrastructure for federal facilities, with demonstrated expertise in engineered systems for industrial and municipal applications. Their core capabilities include hydraulic modeling, process design for biological and chemical treatment trains, sludge management, and compliance-driven system integration under EPA and state regulatory frameworks. The firm delivers turnkey solutions for wastewater collection, treatment, and discharge systems, emphasizing sustainability, energy efficiency, and long-term operational resilience. Their technical approach integrates advanced modeling tools, odor control strategies, and automation systems tailored to high-integrity environments such as mint facilities and other federally operated industrial sites. The contractor has performed work exclusively for the Department of the Treasury, delivering critical wastewater infrastructure at sensitive federal installations including the Denver Mint and another undisclosed Treasury facility. These engagements reflect a pattern of trusted, mission-critical support for facilities requiring stringent environmental compliance, process reliability, and security-conscious engineering. The work is not general municipal contracting but focused on specialized industrial wastewater systems within secure federal campuses. The primary NAICS code 423830, while typically associated with wholesale distribution, appears misaligned with actual performance; the awarded projects clearly reflect engineering design and construction services under NAICS 541330 (Engineering Services). This suggests the contractor’s market positioning is in technical engineering for environmental infrastructure, not equipment sales. Their vertical specialization lies in federal industrial wastewater systems, particularly where process purity, regulatory scrutiny, and facility security are paramount. Carollo Engineers Inc. is a 2L entity headquartered in Walnut Creek, California, with no government certifications listed. The company operates as a specialized engineering firm serving federal clients through technical expertise rather than socioeconomic program participation. Their geographic presence is centered in the western U.S., with a focused footprint in federal infrastructure projects requiring precision environmental engineering.