WRECO has been involved in more than 1,000 transportation infrastructure and water resources projects in California. We have established long-term relationships with our clients in the private and public sectors, including transportation authorities, local municipalities, public works departments, flood control and water conservation districts, utility companies, parks districts, and permitting agencies.

WRECO provides communities throughout California with innovative solutions in the fields of civil engineering, environmental compliance, geotechnical engineering, and water resources. We pride ourselves in finding cost-effective solutions that prioritize both our clients’ goals and environmental considerations. Our President, Dr. Han-Bin Liang, P.E., founded the company in 1995. Our headquarters is in Walnut Creek, and our branch offices are in Oakland, San Jose, Roseville, Elk Grove, and Los Angeles.

A small but diverse business (California Unified Certification Program Disadvantaged Business Enterprise No. 30066), WRECO is composed of exceptional professional civil engineers, hydraulic engineers, geotechnical engineers, hydrologists, biologists, geologists, environmental scientists, water quality specialists, Qualified Storm Water Pollution Prevention Plan (SWPPP) Developers and Practitioners, Qualified Industrial Stormwater Practitioners, CASQA-qualified National Pollutant Discharge Elimination System (NPDES) Construction General Permit Trainers of Record, and CADD technicians. Additionally, we have an in-house materials testing lab.

Cultivation of relationships, sustainability, and innovation are some of our key values.