| Action Date |
Action |
Description |
DEC Staff |
| 8/20/2007 |
Spill Transferred from Prevention Preparedness and Response Program |
Spill transferred by PERP staff Tom DeRuyter. Spill no. 07309918202; spill date = 7/1/07; substance = diesel; quantity = unknown; PERP file no. 102.02.001. |
Mitzi Read |
| 8/20/2007 |
Update or Other Action |
ADEC received notification that a heating fuel release had occurred at 4081 Teal Ave. The contamination appears to be a result of both a leaking return fuel line and corrosive failure of a 1000 gallon fuel oil tank that had been installed in 1982. It was replaced with a new tank. Approximately 50 cubic yards of soil was removed and replaced with clean fill. Groundwater was encountered at 9 feet and was impacted by DRO and BTEX. |
Jim Frechione |
| 10/25/2007 |
Site Characterization Workplan Approved |
ADEC approves the proposal to install temporary sampling points to further characterize the extent of contamination and to place permanent monitor wells. Nortech indicated they are still working with the former owner (Mark Snipes) who has sold the property and is out of state. |
Jim Frechione |
| 10/30/2007 |
Exposure Tracking Model Ranking |
Initial ranking completed. |
Mitzi Read |
| 10/30/2007 |
Site Added to Database |
Site added to the database. |
Mitzi Read |
| 3/12/2013 |
Update or Other Action |
In October 2008 Nortech participated in removal of 40-50 cy of contaminated soil and tank removal/replacemetn of petroleum satuarated wood from the foundation area of the residence. Vapor extraction measures placed beneath slab portion of the residence and adjacent to the foundation area. Eight temporary monitoring wells were installed at the residence. Monitoring results indicated groundwater contamination extends East and West off the property, but not North and South. Recommended further monitoring. |
Laurel Gale |
| 2/3/2016 |
Document, Report, or Work plan Review - other |
ADEC reviewed the 2008-2009 Site Characterization Report and 2013 Site Characterization and Long Term Monitoring Report prepared by Nortech. Five monitoring wells on the property and three wells on adjacent properties indicate that the degree and extent of contaminants of concern (COCs) and have been determined. Groundwater contamination remains on the property to the north and south and extends beyond the east and west property boundaries. Contaminant levels appear to be decreasing in most of the monitoring wells. During periods of low groundwater (often late winter and early spring) free product has been observed in a few of the on-site wells. Several attempts were made to remove this free product but very little (1.5 gal) was actually recovered. The soil vapor extraction (SVE)/depressurization system appear to be reducing vapor contaminant concentrations below the initial start-up levels. |
Shawn Tisdell |
| 2/29/2016 |
Potentially Responsible Party/State Interest Letter |
PRP letter sent to Mark Snipes. This letter advises potentially responsible party of the financial responsibility or liability for investigation and cleanup of any hazardous substances that might be present. |
Shawn Tisdell |
| 5/2/2016 |
Site Visit |
Site visit with DEC and Nortech personnel. The two SVE fans were operating and still producing measurable vapors, between 20 and 45ppm as determined using a PID. The on-site monitoring wells appeared functional, however several were missing caps. DEC requested that the caps be replaced. Site history and remaining data gaps were discussed to identify remaining site risk and determine what additional work is needed on the site. The two remaining risk pathways are indoor vapor intrusion and groundwater trend determination. A work plan will be prepared by Nortech addressing these issues. |
Shawn Tisdell |
| 5/6/2016 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 75475 HHOT & Piping DRO/BTEX. |
Shawn Tisdell |
| 5/5/2017 |
Update or Other Action |
Contacted the consultant and was notified that a work plan is being prepared. |
Shawn Tisdell |
| 9/26/2017 |
Update or Other Action |
Site characterization work plan received on 9/14/2017. The work plan proposes to replace a monitoring well that had been damaged, to sample groundwater and evaluate indoor air quality. A review letter was prepared by the DEC with comments requesting clarifications to the work plan before it is approved. |
Shawn Tisdell |
| 9/28/2017 |
Document, Report, or Work plan Review - other |
ADEC received a revised workplan providing response to comments. |
Shawn Tisdell |
| 2/23/2018 |
Meeting or Teleconference Held |
ADEC staff was updated in a teleconference with staff from Nortech that a building inventory survey had been conducted at the site in preparation for vapor intrusion indoor air testing. The vapor mitigation system was not operating, having been shut off due to noise produced by the system fans. Nortech proposed to get the system back in operation and then propose how to determine if it is effectively controlling the vapor intrusion pathway. |
Shawn Tisdell |
| 3/2/2018 |
Update or Other Action |
Email received by DEC from consultant indicating that they will finalize the 2017 groundwater monitoring report, while following up with a proposal for indoor air quality assessment. |
Shawn Tisdell |
| 12/5/2018 |
Workplan Requested |
Email sent to consultant requesting work plan update and 2017 groundwater monitoring report. |
Shawn Tisdell |
| 4/6/2020 |
Document, Report, or Work plan Review - other |
During October 10 and 11, 2017, monitoring well MW-2 was replaced, four steel drive-point wells were decommissioned, eight wells were sampled for contaminants of concern and for natural attenuation geochemical parameters. Groundwater contamination remains near the source area, with benzene, diesel range organics and naphthalene exceeding cleanup levels (CULs). Naphthalene was observed above the CUL in MW-16 approximately 100 feet to the east of the
release location.
The soil vapor mitigation system was inspected and the residence was evaluated for vapor intrusion potential. High VOC levels were observed, confounding factors such as scented products, were observed to be impacting indoor air quality. The consultant decided not to collect indoor air samples due to the confounding factors.
Following report review, DEC requested a long-term monitoring work plan to address groundwater contaminant trends, to demonstrate the effectiveness of the vapor mitigation system at controlling soil gas, and to prepare an operation and maintenance plan for the system. |
Shawn Tisdell |
| 1/8/2021 |
Meeting or Teleconference Held |
PM talked with consultant about site cleanup status since last year. The consultant is working with the insurance provider to gain approval to collect sub-slab soil gas samples but has been having difficulty with reaching the appropriate insurance staff. The consultant is assuming they will get approval from the insurance company to conduct additional site work in 2021. |
Shawn Tisdell |
