If you are buying or developing commercial property in New Jersey, a Phase II Environmental Site Assessment might be in your future. It is the step that comes after the Phase I report identifies potential contamination concerns. Instead of looking at records and doing a site walk, a Phase II actually tests the soil, groundwater, and soil vapor to find out what is really there.
Phase I vs Phase II: The Difference
A Phase I ESA is a records review. An environmental professional looks at historical aerial photos, city directories, regulatory databases, and does a site inspection. They identify recognized environmental conditions, or RECs, which are areas where contamination might exist. But a Phase I does not involve any testing. It tells you where to look, not what is there.
A Phase II goes further. It collects physical samples from the site and has them analyzed by a certified laboratory. The results tell you exactly what contaminants are present, at what concentrations, and whether they exceed regulatory standards. If your lender, buyer, or NJDEP requires a Phase II, you cannot skip it.
What a Phase II Involves
Soil boring. A drilling rig advances boreholes at strategic locations around the site. The locations are chosen based on the Phase I findings historical tank locations, former chemical storage areas, drainage paths. Soil samples are collected at various depths and sent to a lab for analysis. The lab tests for VOCs, SVOCs, pesticides, PCBs, metals, and other contaminants depending on the site history.
Groundwater monitoring wells. If groundwater is shallow enough, monitoring wells are installed in the boreholes. These wells allow groundwater samples to be collected and analyzed. Groundwater data is important because contaminated groundwater can migrate off site and create liability for the property owner.
Soil vapor sampling. Temporary or permanent soil gas probes are installed to collect vapor samples from the unsaturated zone above the water table. These samples are analyzed for VOCs and other volatile chemicals. Soil vapor data is critical for vapor intrusion assessments. If vapor levels are high, a mitigation system may be needed before the building can be occupied.
Reporting. The lab data is compiled into a report that compares results to NJDEP cleanup criteria. The report identifies which contaminants exceed screening levels and recommends next steps. Those next steps could range from no further action to full scale remediation with vapor mitigation.
NJ DEP Requirements
New Jersey operates under the Site Remediation Reform Act (SRRA). The process is overseen by Licensed Site Remediation Professionals (LSRPs). If contamination is found, the LSRP determines the appropriate response. For many commercial sites, the response involves removing contaminated soil, installing a vapor mitigation system, or both.
One advantage of working with EAI-South is that we handle the full picture. If your Phase II identifies vapor intrusion concerns, we can design and install the mitigation system. You do not need to find a separate contractor. We handle the assessment, the mitigation design, and the installation.
How Long Does a Phase II Take?
A typical Phase II takes 2 to 4 weeks from start to final report. The timeline depends on the number of sampling locations, lab turnaround times, and site conditions. If you are on a tight schedule, plan ahead and get the Phase II started early in the due diligence process.
We provide Phase II environmental site assessments in New Jersey. We handle soil boring, groundwater sampling, soil vapor testing, and reporting. If your Phase II identifies vapor concerns, we can design and install the mitigation system too.