Airports

Based on the Water Code Section 13267 Order WQ 2019-0005-DWQ issued by the State Water Resources Control Board, Group Delta, an NV5 Company, performed a soil, groundwater, and drinking water PFAS investigation to determine if previous use of AFFF, known to contain PFAS, impacted the soil and groundwater at the airport. Our team advanced two sonic borings to a depth of approximately 60-feet below ground surface oil and groundwater samples were collected.

In addition, two water supply wells that service the Airport were sampled. All soil and groundwater samples collected were analyzed for the full suite of PFAS constituents by EPA Method 537 Modified. Our team also analyzed groundwater samples for total dissolved solids, chloride, carbonate, bicarbonate, nitrate-nitrogen, sulfate, calcium, magnesium, potassium and sodium.

Value Added

• Regulatory-Driven Investigation Expertise: Our team successfully performed a Water Board-required PFAS soil and groundwater investigation, demonstrating compliance and technical proficiency.
• Trusted for Expanded Scope: Based on strong project delivery, our team selected to develop a work plan for a Site-wide PFAS investigation in future renovation areas.
• Specialized PFAS Knowledge: Our team applied deep experience with PFAS protocols to ensure accurate sampling, risk mitigation, and regulatory alignment.