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Superior is a full-service, multi-licensed contractor serving commercial and industrial accounts locally as well as nationwide. We specialize in all areas including new construction, tenant improvement, remodels and design / build in addition to 24-hour emergency service and scheduled maintenance. The convenience of working with one contractor for all your construction, service and maintenance needs not only saves time, it saves money. Superiors specialty teams work together to insure your project runs smoothly. Superior: more than a name. Its our company philosophy.
Our ultra-high performance Shutter Valve is designed and certified to work in a variety of industrial applications. Whether you run a beverage company, power plant, oil & gas facility, chemical plant or need to control steam, water or atmospheric gases, we have just the valve for you!
Forell/Elsesser Engineers is a San Francisco-based structural engineering firm. We are an award-winning structural and earthquake engineering firm with substantial experience in the design of new and rehabilitated facilities of various types of construction. Our experience includes all aspects of structural engineering and seismic design, including cost-effective and innovative design solutions.
Holliday Rock Co., Inc. is a prominent construction materials manufacturer based in Upland, California, with over 85 years of experience. Founded in 1937, the company operates 40 locations throughout Southern and Central California. It specializes in producing aggregates, hot mix asphalt, and ready-mix concrete, serving a variety of infrastructure, commercial, and residential projects. As one of the largest independent manufacturers in the United States, Holliday Rock is committed to safety, sustainability, and quality. The company employs around 223 people and emphasizes workforce empowerment and community engagement. It actively collaborates with industry organizations, including the Associated General Contractors of California and the National Ready Mixed Concrete Association, to promote best practices in construction.
Gramercy Group is a WBE company that specializes in demolition, environmental remediation, and heavy civil work.