Dan Brown

Rapid Response Sampling, Maryland — Provides on-call vapor sampling services for a natural gas provider in Maryland when gas odors are reported by customers or work crews. Coordinates with onsite personnel and analytical laboratory to ensure all parties are meeting response and reporting protocols.

Soil Vapor Sampling, Philadelphia — Performs subslab vapor sampling at an industrial site to evaluate vapor phase contaminant migration pathways to a nearby residential area. Verifies that vapor pins are sealed properly, sample collection methods are followed, and Summa canisters have been properly prepped to ensure that data quality objectives are met.

GIS Figure Production and Analysis — Proficiently uses ArcPro to develop high-quality GIS figures, including site base maps, iso-concentration maps, and other spatial visuals supporting projects at all stages. Maintains geodatabases, performs spatial data processing, and ensures consistent, accurate deliverables for technical reports and proposals.

LNAPL Recovery in an Unconsolidated Aquifer, Delaware — Performs operations and maintenance tasks at a shallow aquifer groundwater depression and light nonaqueous-phase liquid (LNAPL) recovery system. Responsibilities include equipment upkeep, system optimization, discharge permit compliance, LNAPL recovery and thickness measurements, and groundwater elevation measurements.

LNAPL Recovery in a Fractured Rock Aquifer, New Jersey — Performs operations and maintenance tasks at a groundwater depression, groundwater treatment, and LNAPL recovery system at a legacy industrial site. Tasks include equipment upkeep, system adjustments, LNAPL recovery, and site-wide groundwater elevation, and LNAPL thickness measurements.

PFAS in Groundwater, New Jersey and Delaware — Performs groundwater sampling at multiple large-scale sites impacted by PFAS compounds. Sample collection includes low-flow purge and volumetric purge methodology, calibration and use of water quality instrumentation, and adherence to sample handling and QA/QC protocols to meet data quality objectives.

Contaminants in Groundwater, Federal Superfund Site, Bridgeport, New Jersey — Collects groundwater samples at a large-scale federal Superfund site impacted by volatile organic compounds and semivolatile organic compounds. Sample collection includes low-flow purge methodology, calibration and use of water quality instrumentation, and adherence to sample handling and QA/QC protocols to meet data quality objectives.

Contaminants in Groundwater, Multiple Sites, Pennsylvania, New Jersey, and Delaware — Collects groundwater samples at multiple project sites to monitor the extent and magnitude of contaminant impacts. Sample collection includes low-flow and volumetric purge methodology, calibration and use of water quality instrumentation, groundwater elevation measurements, and adherence to sample handling and QA/QC protocols to meet data quality objectives.

Residential Sampling, Pennsylvania — Sampled residential home point of entry treatment systems for breakthrough in drinking water using EPA Method 524.2. Followed sampling protocols and maintained chain-of-custody documentation to ensure data integrity. Coordinated sample shipments to certified laboratories and supported data review for compliance and project reporting.

Potable Drinking Water Sampling, School District of Philadelphia, Pennsylvania — Collects water samples from drinking water and food preparation outlets across hundreds of schools and facilities for the purposes of identifying and mitigating lead as a contaminant. Tasks include coordination with school district personnel, water outlet surveys, sample collection, sample handling, and detailed record-keeping.

Transmission Tower Sampling, Delaware — Performs paint chip and shallow soil sampling to determine lead impact levels along a multimile circuit of electrical transmission towers. Proficient using x-ray fluorescence analyzers, collecting composite soil samples, and adhering to QA/QC protocols to ensure that data quality objectives are met.

Asbestos Survey Oversight, Delaware, New Jersey, Maryland, and Washington, DC — Provided oversight of personnel conducting surveys and sampling for asbestos-containing materials across multiple electrical substation locations. Oversight included coordination of personnel, conduct within secure areas, and adherence to health and safety protocols.

Superfund Site Maintenance, New Jersey and Pennsylvania — Conducts site condition monitoring and upkeep at multiple Superfund sites. Tasks include vegetation control, signage inspection, and access point security.

Compliance Inspection, Gas Transmission Pipeline, Pennsylvania — Conducts visual inspection and documentation along multimile sections of a gas transmission pipeline for evidence of postconstruction subsidence, the presence of required signage, or other conditions requiring supplemental maintenance.