207-22 Attachment - Phase II ESA_Twin Towing REV.pdf

category 2 and TCL/TAL+30 and submitted to a New Jersey certified laboratory to be analyzed on a standard turnaround time. The soil borings will be backfilled with soil cuttings. Analytical results will be compared to the NJDEP May 2021 SRS. REC-6 – Former Rail Lines Based on the review of historic documents, rail lines were formerly located along the northern portion of the Site and running east to west. The rail lines were removed from the Site by 1984, and the area is currently used for vehicle storage. Based on potential contaminants associated with historic rail lines, polynuclear aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and metals, Matrix is recommending the collection of soil samples every 100 ft along the former rail line. Matrix will install three soil borings in the vicinity of the former rail line utilizing Geoprobe ® Direct Push technology. The Geoprobe samples will be lined with five-foot dedicated acetate sleeves. The material will be field-screened for the presence of VOCs with a PID. Matrix will collect three soil samples at a six- inch interval which displays the greatest likelihood for contamination based on visual observations and field screening instruments. It is estimated that the soil borings will be advanced to no more than 10 feet bgs. The soil samples will be analyzed for PAHs, PCBs, and TAL metals and submitted to a New Jersey certified laboratory to be analyzed on a standard turnaround time. The soil borings will be backfilled with soil cuttings. Analytical results will be compared to the NJDEP May 2021 SRS. REC-7 – Former Site Structures Based on the 1939 Sanborn Map, store/residential structures were constructed on the Site. The former store/residential structures were demolished by 1951. Based on the building use, it is not likely that hazardous materials were utilized, stored, produced, or disposed of at the Site. However, it was common for commercial and residential properties to be heated by heating oil that was stored in underground storage tanks (USTs). Information regarding potential former USTs associated with the former Site structure was not available. A non-intrusive geophysical subsurface investigation will be conducted using ground-penetrating radar (GPR), radio frequency, magnetic (MAG) and electromagnetic (EM) geophysical subsurface delineation techniques. The results of the geophysical

stigation will be conducted using ground-penetrating radar (GPR), radio frequency, magnetic (MAG) and electromagnetic (EM) geophysical subsurface delineation techniques. The results of the geophysical investigation will be used to identify any previously unknown buried tanks, containers, vaults, and metallic anomalies, and to determine the location of soil borings. REC-8 - Vapor Encroachment Based on the review of historical records, there is an off-site source of groundwater contamination identified in close proximity to the Site. Matrix proposes performing an open public records request act (OPRA) file review at NJDEP to obtain additional details regarding the off-site source of contamination and to determine if there is a potential vapor intrusion trigger within 100 feet of the Site building. Task 2 – Phase II Report Preparation and Project Management Upon completion of the investigation activities described above, a Phase II ESA letter report will be prepared and submitted to the Client. Analytical results will be compared to the applicable NJDEP screening levels and regulatory standard. The Phase II ESA letter report will document the observations made during the investigation, analytical results, and any additional actions that may be necessary. The Phase II ESA letter report will include analytical summary tables, sample location figures, and boring logs. A draft report will be prepared 30 days after the last set of data is received. A final report will be submitted two weeks following receipt of client comments. F:\2022\22-0367 1 Lakeside Avenue - Twin Towing\Financial\Proposals\Internal\Phase II\Phase II ESA_Twin Towing REV.docx 4