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

pan, zoom, and tilt camera on a closed-circuit television with a computer analysis. If schematics cannot be provided for the configuration of the oil/water separator, Matrix suggests that a geophysical Survey be conducted to determine the location, configuration, and if there is an underground water oil tank associated with the system. Following the geophysical investigation, Matrix will install a minimum of three soil borings in the vicinity of the oil water separator and each trench drain utilizing Geoprobe® Direct Push technology to determine if the parts washer has impacted the soils beneath the Site. 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 and logged for lithology. Matrix will collect three soil sample at a six-inch interval which displays the greatest likelihood for contamination based on visual observations and field screening instruments (i.e., high PID readings) or 6-inches below the invert of the oil water separator and/or trench drains. It is estimated that the three soil borings will be advanced to no more than 15 feet bgs. The soil samples will be analyzed for analyzed for extractable petroleum hydrocarbons (EPH) category 2 and target compound list and target analyte list plus a forwarding library (TCL/TAL+30). The soil samples will be submitted to a New Jersey certified laboratory to be analyzed on a standard turnaround time. The soil boring will be backfilled with soil cuttings and sealed with concrete. Analytical results will be compared to the NJDEP May 2021 SRS. REC-4 – Exterior Staining During the site reconnaissance, several areas of staining on the asphalt were observed in the parking lot, concrete aprons, and in vehicle storage areas. Due to the unpaved nature of a majority of the Site, the presence of staining across these areas, Matrix recommendations the completion of soil borings to determine if impacts are present beneath the Site. Matrix will install two soil borings in the vicinity of the staining 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 two soil samples at a six-inch interval which displays the greatest likelihood for contamination based on visual

terial will be field- screened for the presence of VOCs with a PID. Matrix will collect two 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 5 feet bgs. The soil samples will be analyzed for EPH 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-5 – Historic Fill Based on the NJDEP GIS Map and NJDEP’s GeoWeb, there is potential for impact to the Site based on the mapped historic fill material across the Site. No previous investigations or remediation of contaminants that may exist from the potential historic fill material have been completed as part of this report, nor were any previous investigations discovered by any OPRA/FIOA requests sent as part of this report. As a result, there is a potential for historic fill material and contaminants associated with historic fill material to exist on the Site. Matrix will install up to three soil borings throughout the Site utilizing Geoprobe® Direct Push technology to determine if historic fill material is present on Site and, if present, determine the extent of the historic fill material. 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. If historic fill is present, Matrix will collect up to two soil samples from the historic fill material 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 15 feet bgs. The soil samples will be analyzed for EPH F:\2022\22-0367 1 Lakeside Avenue - Twin Towing\Financial\Proposals\Internal\Phase II\Phase II ESA_Twin Towing REV.docx 3