Our clients include private industry and public agencies, ranging from city, county, state, and federal facilities. Our projects include:

• Baseline Environmental Audits
• Wastestream Inventories
• Regulatory Compliance Reviews
• Development of Waste Management Plans
• NPDES Monitoring
• Engineering Design

Our engineers and scientists have conducted baseline environmental audits at individual vehicle maintenance shops, paint spray booths, electroplating facilities, petroleum storage facilities, and wood treating facilities, as well as across a large Department of Energy site. Our wastestream inventories focus on liquid effluents for individual processes, as well as site-wide discharges that require NPDES permit compliance. We determine the environmental impacts of stormwater and industrial wastewater loading through system monitoring and flow and transport modeling.

Our evaluations of facilities operations extend to site characterization and design of control and treatment units to attain compliance. We perform multi-media sampling (soil, water, sludge and product), oversee monitoring well installations, and sample tanks. Our industrial process reviews range from treatment of high level mixed waste at Hanford with evaluation of RCRA land disposal restrictions to maintenance yard handling of cleaning fluids, pesticides, and road salt to conducting SPCC inspections.

Herrera’s engineering services include design of spill containment structures, wastewater treatment systems, and stormwater flow control; evaluation of alternative waste treatment methods; and evaluation of proposed hazardous waste landfill design.

We provide programmatic support to local and state agencies to identify potential industrial users, to determine typical waste stream profiles for specific industries, and to develop strategies for waste recycling and reduction.