Environmental Engineering & Remedial Design in California

Encon Environmental provides environmental engineering and remedial design services for sites across California—from coastal communities and the Los Angeles Basin to the Inland Empire, Bay Area, and Central Valley. We turn regulatory directives and site data into buildable designs that can be implemented safely and efficiently in the field.

Our engineers and geoscientists focus on solutions that are technically defensible, practical to construct, and aligned with California regulatory expectations and your project goals.

  • Remedial design for soil, soil vapor, and groundwater impacts.
  • Engineering evaluations and feasibility studies for complex sites.
  • Coordination with regulators, owners, and construction teams statewide.

Remedial Design Driven by Site Conditions & Closure Goals

California sites are rarely simple. Urban redevelopment, active fueling facilities, industrial uses, and complex subsurface conditions all influence remedial choices and implementation.

Encon evaluates geology, hydrogeology, and existing data to develop conceptual site models and design approaches that reflect real-world constraints. We balance performance, constructability, and cost—designing systems that support regulatory closure while recognizing how the property will be used today and in the future.

Our environmental engineering work often includes:
  • Conceptual site model development and data gap analysis.
  • Evaluation of remedial alternatives and technology screening.
  • Design of soil vapor extraction, air sparging, and injection systems.
  • Design of groundwater extraction and treatment systems.
  • Preparation of engineering drawings, specifications, and cost opinions.

Aligning Designs With California Regulators & Programs

Encon Environmental has long-standing experience working with state and local agencies throughout California, including regional water quality control boards, local CUPAs, and city and county environmental health departments overseeing contaminated sites and fuel facilities.

We understand how technical justifications, data presentations, and design details will be reviewed— and we design with that reality in mind to keep projects moving toward approval and closure.

Regulatory-focused engineering support:
  • Preparation of workplans, design reports, and basis-of-design documents.
  • Responses to regulatory directives and technical comments.
  • Optimization of underperforming remediation systems.
  • Transition strategies from active remediation to monitored natural attenuation.
  • Closure-focused strategies for long-running California cases.

Designed to Be Built, Operated, & Maintained

Because Encon Environmental also provides construction and field services, our engineering designs are grounded in practical experience. We consider construction sequencing, access limitations, and long-term operation and maintenance from the beginning of the design process.

This integrated approach is especially important across California, where sites are often located in dense corridors, near sensitive receptors, or within busy commercial centers and active facilities.

Our design philosophy emphasizes:
  • Safe construction at operating facilities and constrained sites.
  • Integration with existing utilities, buildings, and infrastructure.
  • Monitoring and maintenance that fit routine operations.
  • Flexibility to adjust systems as site conditions or regulations change.

Bring Environmental Engineering Expertise Into Your California Project

Whether you are responding to a new directive, planning redevelopment, or looking to optimize an existing remediation system, Encon Environmental can provide the environmental engineering support you need anywhere in California.

Start an engineering discussion (562) 777-2200