Cleanup Activities
There are no current cleanup activities.
Cleanup/Treatment Implemented:
N
Cleanup/Treatement Categories:
Addl Cleanup/Treatment info:
The scope of work performed during this Phase II ESA was done in general accordance with the site-specific SAP approved on May 19, 2021. There were no significant variances to the planned scope of work. On June 9, 2021, PM completed a geophysical survey at the subject property to investigate the potential presence of orphan USTs associated with former heating oil of both buildings at the subject property, confirm the presence/absence of additional orphan USTs associated with the former gasoline station, identify additional in-ground lifts reservoir, and attempt to determine the location of the former septic fields. Overgrown vegetation to the west of the subject property, parked vehicles, and roll-off dumpsters limited the ability of the GPR unit to assess the entire survey area. No anomalies consistent with the presence of orphaned USTs, former septic fields, or former inground lifts were identified in accessible areas during the completion of the geophysical survey.
However, the potential still exists for these to be present in areas not surveyed. On June 10, 2021, PM advanced eight soil borings (SB-1 through SB-8), installed eight temporary monitoring wells (TMW-1 through TMW-8), and collected a total of nine soil samples (including one duplicate) and eight groundwater samples (including one duplicate) for laboratory analysis of VOCs, PAHs, PCBs, TPH-GRO, TPH-DRO, and metals (cadmium, chromium, and lead), or some combination thereof. Concentrations of TPH-GRO were detected in soil samples SB-5 (0.0-2.5 feet bgs) and SB-6 (2.5- 5.0 feet bgs) above the applicable Tier III Restricted/Commercial VRP SLs. Concentrations of benzene, ethylbenzene, naphthalene, n-propylbenzene, isopropylbenzene, xylenes, 2-methylnaphthalene, 1,2,4-TMB, 1,2,3-TMB and/or TPH-GRO/DRO were detected in groundwater samples TMW-5, TMW-6, TMW-7, and TMW-8 above the Tier III Construction DC SLs. Concentrations of ethylbenzene, naphthalene, n-propylbenzene, xylenes, and/or TPH-GRO were detected in groundwater samples TMW-5, TMW-6, and TMW-8 above the Tier III Industrial Vapor Intrusion SLs. Based on the results of the investigation, the soil and groundwater impact identified at the subject property appear to be located in the southern portion of the subject property in the area of the former gasoline station (Mike's Garage). The results indicate that there is a vapor intrusion to indoor air inhalation exposure risk to the occupants of the building. Therefore, PM recommends further investigation (a soil gas survey) to assess the vapor intrusion pathway, and supplemental assessment to delineate the soil and groundwater impact. Additionally, PM recommend the preparation of a Soil and Groundwater Management Plan (SGMP) to be implemented during future construction-related activities that entail the exposure and/or excavation of contaminated soil and groundwater.
Address of Data Source:
Total ACRES Cleaned Up: 1.23
Number of Cleanup Jobs Leveraged:
EPA Cleanup Funding:
Leveraged Funding:
Cost Share Funding:
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