| Action Date |
Action |
Description |
DEC Staff |
| 9/6/2016 |
Potentially Responsible Party/State Interest Letter |
Potentially Responsible Party / State Interest Letter sent to landowner by PPR staff Gay Harpole. |
Mitzi Read |
| 9/29/2016 |
Spill Transferred from Prevention Preparedness and Response Program |
Spill transferred by PPR staff Gay Harpole. Spill no. 16239923801; spill date = 8/25/15; substance = diesel; quantity = ~250-300 gallons; source = 300-gallon above ground heating oil tank. |
Mitzi Read |
| 10/4/2016 |
Site Added to Database |
A new site has been added to the database |
Mitzi Read |
| 11/22/2016 |
Site Visit |
Site visit and meeting with homeowner regarding participation in HHOT Pilot Project. |
Bill O'Connell |
| 3/15/2017 |
Update or Other Action |
Site accepted into HHOT pilot project. |
Bill O'Connell |
| 4/11/2017 |
Update or Other Action |
A sample from the drinking water well at the property did not contain detectable concentrations of contaminants. |
Bill O'Connell |
| 8/3/2017 |
Document, Report, or Work plan Review - other |
Reviewed Work Plan for soil borings at 13201 East Soapstone Rd. One borehole will be advanced to 50 feet bgs in the source area, then to 80 feet if contamination is still evident. If groundwater is encountered, a monitoring well will be installed in this borehole., developed and sampled. A second borehole will be advanced to 10 feet bgs between the source area and the house to evaluate for vapor intrusion. |
Bill O'Connell |
| 12/4/2017 |
Document, Report, or Work plan Review - other |
Reviewed Site Characterization Activities report for 13201 East Soapstone. Two soil borings were advanced at the site; one in the source area (SB2) and one between the source area and the residence (SB1) to evaluate for vapor intrusion. SB1 was advanced to 10 feet below grade and one analytical soil samples was collected. Contamination was not encountered in this borehole. SB2 was advanced to approximately 53 feet below grade to install a monitoring well after groundwater was encountered at approximately 49 feet. Soil samples were collected from three depth intervals in SB2; 8-10 feet, 33-35 feet and 48-50 feet. The samples from 8-10 feet and 33-35 feet contained numerous petroleum contaminants at concentrations above DEC cleanup levels including GRO up to 419 mg/kg, DRO up to 4,080 mg/kg, and benzene up to 0.163 mg/kg. Other analytes exceeding soil cleanup levels include toluene, ethylbenzene, xylenes, naphthalene, and 1- and 2- methylnaphthalene. The soil sample from 48-50 feet did not contain contaminants above cleanup levels. The groundwater sample contained DRO at 2.6 mg/l and also contained ethylbenzene, xylenes, 1-methylnaphthalene and naphthalene above cleanup levels. The drinking water well was sampled in Summer 2016 and did not contain detectable concentrations of contaminants. Additional sampling of the monitoring well and drinking water well are anticipated for 2018. |
Bill O'Connell |
| 7/2/2018 |
Document, Report, or Work plan Review - other |
An effort was made in May 2018 to collect a sample from MW1. however petroleum sheen was noted on the surface of the GW so no sample was collected. |
Bill O'Connell |
| 10/4/2018 |
Site Visit |
Site visit with contractor to discuss MW locations |
Bill O'Connell |
| 11/5/2018 |
Document, Report, or Work plan Review - other |
Reviewed work plan for groundwater investigation and in situ remediation for 13201 Soapstone Rd. Three monitoring wells will be installed, surveyed, and sampled in Fall 2018. Based on GW flow direction, a fourth well may be installed in Spring 2019 and in situ remediation will be conducted by injecting a granular activated carbon product at 18 injection points to depths of 40-50 feet bgs. The on site drinking water well will also be sampled and one soil sample will be collected from the GW interface from each borehole. |
Bill O'Connell |
| 2/7/2023 |
Site Characterization Report Approved |
Reviewed Site Characterization report for Soapstone Rd HHOT site. The report documents drinking water well sampling, installation and sampling of three soil borings completed as monitoring wells MW2, MW3, and MW4, and the injection of granular activated carbon slurry into the substrate in an effort to minimize contaminant migration and impacts to groundwater. The drinking water well was sampled in 2018 and did not contain detectable concentrations of contaminants. Soil samples collected from the groundwater interface 40-45 feet bgs in MW2, 3, and 4 did not contain contaminants above cleanup levels. The monitoring wells were placed to evaluate potential migration from the source area and were sampled on seven occasions between 2018 and 2022, along with existing well MW1. DRO was detected in each well at concentrations below the cleanup level, suggesting the heating oil has not migrated a significant distance from the source area. Source area well MW1 had measurable LNAPL in 2018 and 2019. By 2020 the product was reduced to a petroleum sheen and in 2021 and 2022, dissolved-phase DRO concentrations were below the groundwater cleanup level. The reduction in LNAPL and dissolved phase petroleum concentrations are attributed to the GAC injection, which occurred in August 2019. The injection occurred in an area 20 feet by 45 feet in size and included 16 injection points. A total of 2,990 gallons of GAC slurry were injected across an interval from 41 to 47 feet below ground surface. |
Bill O'Connell |
| 8/9/2023 |
Document, Report, or Work plan Review - other |
Groundwater samples were collected from MWs 1-4 in June, 2023. Contaminants were not detected above cleanup levels. |
Bill O'Connell |
| 9/26/2023 |
Document, Report, or Work plan Review - other |
Work plan approved for MW decommissioning. |
Bill O'Connell |
| 11/22/2023 |
Document, Report, or Work plan Review - other |
Monitoring wells were successfully decommissioned in accordance with DEC guidance. |
Bill O'Connell |
| 1/12/2024 |
Cleanup Complete Determination Issued |
Cleanup complete determination issued. Closure letter sent to landowner via email and certified mail. |
Kelly Ireland |
