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Cesar Hernandez

Cesar Hernandez
Scientist

Cesar Hernandez

Scientist

Mr. Cesar Hernandez is an environmental professional with experience in environmental data management, field-based monitoring, and regulatory compliance for federal and state remediation projects. His work has supported large-scale environmental restoration and compliance programs under CERCLA and related federal frameworks. In his roles, Mr. Hernandez has demonstrated strong technical proficiency, attention to data integrity, and a commitment to producing defensible, high-quality environmental data sets for decision-making and reporting.

Mr. Hernandez has supported a range of environmental monitoring and remediation efforts, including groundwater investigations, contaminant plume...

Mr. Cesar Hernandez is an environmental professional with experience in environmental data management, field-based monitoring, and regulatory compliance for federal and state remediation projects. His work has supported large-scale environmental restoration and compliance programs under CERCLA and related federal frameworks. In his roles, Mr. Hernandez has demonstrated strong technical proficiency, attention to data integrity, and a commitment to producing defensible, high-quality environmental data sets for decision-making and reporting.

Mr. Hernandez has supported a range of environmental monitoring and remediation efforts, including groundwater investigations, contaminant plume tracking, and long-term monitoring. He is skilled in performing QA/QC on field and laboratory data sets, managing environmental data systems, and preparing compliance-ready data packages for regulatory submittal. His background includes experience working with environmental field parameters, chains of custody, and laboratory data deliverables.

In addition to his analytical and data management expertise, Mr. Hernandez has conducted field sampling of groundwater, sediment, and air vapor under a variety of environmental conditions. He has contributed to the development of standardized field procedures, training resources, and data validation workflows to improve efficiency and accuracy in environmental reporting. Through his work, Mr. Hernandez has demonstrated a consistent ability to apply technical precision, regulatory awareness, and problem-solving skills to complex environmental projects.

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Data Management

FUDS Data Management Support, Nationwide Provided nationwide data management and technical support for the Formerly Used Defense Sites (FUDS) program under the U.S. Army Corps of Engineers. Supported environmental restoration projects by performing comprehensive data quality assurance and validation for groundwater, soil, and vapor data sets submitted to the FUDSChem database. Assisted in the creation of new report formats and automated tools to improve data accessibility and accuracy. Led training initiatives for project teams and stakeholders on the use of the Environmental Data Management System, ensuring consistent application of federal data standards and workflows.
Environmental Restoration and Data Compliance, Joint Base Lewis-McChord, Washington Performed environmental data management and QA/QC in support of ongoing remediation projects addressing PFAS groundwater and soil contamination. Reviewed field sample data and quality assurance project plans, tracked sampling events, and ensured timely data reporting in accordance with federal standards. Provided a technical data review to assist in the preparation of regulatory deliverables and compliance documentation for long-term monitoring programs.
Environmental Restoration and Data Compliance, Yakima Training Center, Washington Performed environmental data management and QA/QC in support of ongoing remediation projects addressing PFAS groundwater and soil contamination. Reviewed field sample data, tracked sampling events, and ensured timely data reporting in accordance with federal standards. Provided a technical data review to assist in the preparation of regulatory deliverables and compliance documentation for long-term monitoring programs.

Data Quality Assurance

FUDS Data Management Support, Nationwide Provided nationwide data management and technical support for the Formerly Used Defense Sites (FUDS) program under the U.S. Army Corps of Engineers. Supported environmental restoration projects by performing comprehensive data quality assurance and validation for groundwater, soil, and vapor data sets submitted to the FUDSChem database. Assisted in the creation of new report formats and automated tools to improve data accessibility and accuracy. Led training initiatives for project teams and stakeholders on the use of the Environmental Data Management System, ensuring consistent application of federal data standards and workflows.
Environmental Restoration and Data Compliance, Joint Base Lewis-McChord, Washington Performed environmental data management and QA/QC in support of ongoing remediation projects addressing PFAS groundwater and soil contamination. Reviewed field sample data and quality assurance project plans, tracked sampling events, and ensured timely data reporting in accordance with federal standards. Provided a technical data review to assist in the preparation of regulatory deliverables and compliance documentation for long-term monitoring programs.
Environmental Restoration and Data Compliance, Yakima Training Center, Washington Performed environmental data management and QA/QC in support of ongoing remediation projects addressing PFAS groundwater and soil contamination. Reviewed field sample data, tracked sampling events, and ensured timely data reporting in accordance with federal standards. Provided a technical data review to assist in the preparation of regulatory deliverables and compliance documentation for long-term monitoring programs.

Stormwater Management

Implementation of the Los Cerritos Channel Watershed Coordinated Integrated Monitoring Program (CIMP), Los Angeles County, California Participates in wet- and dry-weather monitoring in support of the Los Angeles Regional municipal separated storm sewer system (MS4) NPDES permit. Responsibilities during storm events include collecting grab and composite samples, processing subsamples, and collecting in situ water quality measurements. Installs, maintains, and removes long-term sampling equipment at multiple sites at the start and end of the storm season. Additional duties include maintaining and calibrating monitoring equipment as well as conducting field data quality control checks in support of report preparation for regulatory compliance.
Implementation of the Lower Los Angeles River and Lower San Gabriel River CIMPs, Los Angeles County, California Participates in watershed monitoring to meet the Los Angeles Regional MS4 NPDES permit and total maximum daily load requirements. Conducts wet- and dry-weather sampling, installs and maintains monitoring equipment, and assists with the deployment of remote telemetry systems to support storm-triggered sampling. Performs field operations in alignment with health and safety protocols and conducts hydrologic data quality control checks in support of report preparation to ensure regulatory compliance.
Upper San Gabriel River Enhanced Watershed Management Program, Los Angeles County, California Participates in daily field operations across multiple sites in support of compliance with the Los Angeles Regional MS4 NPDES permit under the Upper San Gabriel River CIMP. Supports wet- and dry-weather sampling events, programs and maintains automated samplers and field equipment, and ensures adherence to permit protocols. Assists with field data quality control and reporting.

Groundwater Monitoring

Groundwater Sampling and Monitoring, Tesoro Golden Eagle Refinery, Pacheco, California Performed groundwater sampling and site monitoring activities at an active oil refinery to support ongoing environmental compliance and remediation efforts. Conducted low-flow groundwater sampling from monitoring wells, measured water quality parameters in the field, and maintained accurate documentation of site conditions and sampling procedures. Ensured adherence to strict health, safety, and environmental standards while coordinating with laboratory personnel to verify analytical results.

Wildlife Monitoring

Fisheries Research and Hatchery Support, Sacramento, California Assisted in fisheries and aquatic habitat monitoring to support state resources management goals. Collected and processed biological samples and assisted in population monitoring efforts. Contributed to conservation efforts through ecological data collection, reporting, and public engagement on sustainable fisheries practices.
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