| Action Date |
Action |
Description |
DEC Staff |
| 7/17/1989 |
Underground Storage Tank Site Characterization or Assessment |
Site assessment during tank removal. |
Former Staff |
| 7/17/1989 |
Site Visit |
Contaminated soil found during tank replacement was noted by ADEC staff during field visit. |
Former Staff |
| 7/17/1989 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 77704 Petroleum contaminant. |
Former Staff |
| 7/17/1989 |
Site Added to Database |
|
Former Staff |
| 7/18/1989 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
LCAU Date changed DB conversion. |
Former Staff |
| 7/31/1989 |
Release Investigation |
ENSR submits workplan for site characterization at site which has been approved. |
Former Staff |
| 9/1/1989 |
Leaking Underground Storage Tank Corrective Action Underway |
ADEC approved 7/21/89 soil treatment of 1800 tons of contaminated soils at Anchorage Sand & Gravel. |
Former Staff |
| 9/5/1989 |
Document, Report, or Work plan Review - other |
Approximately 30 cubic yards of contaminated soil without prohibited materials were sent to municipality of Anchorage landfill for disposal. |
Former Staff |
| 10/19/1989 |
Document, Report, or Work plan Review - other |
October 19, 1989 groundwater monitoring event. Up to 19,000 ug/l benzene (5 ug/l cleanup level) and 200 ug/l lead (15 ug/l cleanup level) in the groundwater. |
Robert Weimer |
| 6/30/1992 |
Document, Report, or Work plan Review - other |
Groundwater treatment and soil vapor extraction operated 1990 to 2001. |
Former Staff |
| 11/20/1997 |
Update or Other Action |
ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: TEXACO REFINING & MARKETING INC. |
Former Staff |
| 7/26/2000 |
Update or Other Action |
ADEC approved reduction in groundwater monitoring, and requests a workplan for confirmation soil samples. |
Robert Weimer |
| 6/8/2004 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 9/6/04. Non-detect (<1.0 ug/l) benzene and (<100 ug/l) GRO in the groundwater samples collected. Contaminant levels appear to be declining. |
Robert Weimer |
| 5/13/2005 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 3/12/05. 3.8 ug/l benzene and non-detect (<100 ug/l) GRO in the groundwater samples collected. Contaminant levels appear to be increasing. Historic groundwater flow direction is to the east. |
Robert Weimer |
| 12/9/2005 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 3/12/05. non-detect (<1.0 ug/l) benzene and non-detect (<100 ug/l) GRO in the groundwater samples collected. Contaminant levels have decreased. Groundwater flow direction is to the northeast. Depth to groundwater is 14 to 17 feet below ground surface. |
Robert Weimer |
| 6/8/2006 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 3/20/06. Non-detect (<0.2 ug/l) benzene and non-detect (<50 ug/l) GRO in the groundwater samples collected. Contaminant levels have decreased. Groundwater flow direction is to the northeast. Depth to groundwater is 15 to 17 feet below ground surface. The 9/1/05 monitoring event was also non-detect. |
Robert Weimer |
| 3/7/2007 |
Exposure Tracking Model Ranking |
Site ranked on the new Exposure Tracking Model (ETM). The ETM is a new site ranking system that looks at, based on available data, the potential exposure pathways for the contamination remaining at the site. |
Robert Weimer |
| 4/9/2007 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 12/13/06. Up to 0.67 ug/l benzene and non-detect (<50 ug/l) GRO. Contaminant levels have increased. Groundwater flow direction is to the southeast. Depth to groundwater is 14.6 to 17.3 feet below ground surface. EDB was <0.5 ug/l but the detection limit was not down to the cleanup level (0.05 ug/l). |
Robert Weimer |
| 5/4/2007 |
Update or Other Action |
ADEC approves request for no-purge groundwater sampling for this site. |
Robert Weimer |
| 1/9/2008 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 6/19/07. Non-detect benzene and GRO in the groundwater samples collected. Contaminant levels have decreased. Groundwater flow direction is to the southeast. Depth to groundwater is 16.52 feet below ground surface. |
Robert Weimer |
| 4/25/2008 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 9/24/07. Non-detect benzene and GRO in the groundwater samples collected. Contaminant levels have decreased. Groundwater flow direction is to the northeast. Depth to groundwater is 15.46 to 17.67 feet below ground surface. |
Robert Weimer |
| 4/25/2008 |
Document, Report, or Work plan Review - other |
A property transfer Phase II environmental assessment was conducted on January 24-25, 2008. Five soil borings were drilled and two groundwater samples were collected. The soil borings had non-detect (<0.02 mg/kg) benzene, non-detect (<2.98 mg/kg) GRO, and up to 4.44 mg/kg lead in the areas sampled. The two groundwater samples had non-detect (<0.5 ug/l) benzene, non-detect (<0.8 mg/l) GRO, and up to 13.7 ug/l lead. |
Robert Weimer |
| 9/4/2008 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 3/29/08. Non-detect benzene and GRO in the groundwater samples collected. Contaminant levels have decreased. Groundwater flow direction is to the south by southwest. Depth to groundwater is 15.61 to 18.97 feet below ground surface. |
Robert Weimer |
| 1/8/2009 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 9/16/08. Up to 42 ug/l benzene and 110 ug/l GRO. Contaminant concentrations have increased. Groundwater flow direction was to the northeast. Depth to groundwater is 15.22 to 17.71 feet below ground surface. |
Robert Weimer |
| 3/18/2009 |
Update or Other Action |
Discussed site status with RP's consultant. They will add lead analysis to all of the monitoring well sampling. They will also look at existing utilities to come up with recommendations on collecting confirmation samples at the fuel oil contaminated area behind the building. |
Robert Weimer |
| 7/28/2009 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 3/24/09. Non-detect (<5 ug/l) lead int he groundwater sample collected. Only 1 monitoring well (SMW-1) was accessible this monitoring event. Historical groundwater flow direction was to the northeast. Depth to groundwater is 18.02 feet below ground surface. |
Robert Weimer |
| 1/14/2010 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 9/15/09. Up to 18 ug/l lead (5 ug/l cleanup level) and non-detect benzene and GRO. Contaminant concentrations have decreased in 1 of the 4 monitoring wells sampled. Groundwater flow direction was to the southeast. Depth to groundwater is 15.64 to 18.11 feet below ground surface. |
Robert Weimer |
| 5/10/2010 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 3/17/10. Up to 6.9 ug/l lead (5 ug/l cleanup level) and non-detect benzene and GRO. Contaminant concentrations have decreased in the 3 monitoring wells sampled. The monitoring well (SMW-3) that previously had the highest lead levels was not sampled this event because of not enough water. Groundwater flow direction was to the southeast. Depth to groundwater is 16.15 to 18.59 feet below ground surface. Need continued semi-annual groundwater monitoring. |
Robert Weimer |
| 1/10/2011 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 77704 1989 UST contamiantion based on lead in the groundwater. |
Robert Weimer |
| 8/25/2011 |
Site Visit |
Site visit to observe current site conditions. |
Robert Weimer |
| 8/25/2011 |
Meeting or Teleconference Held |
Meeting with Shell and CRA to discuss proposed site investigation work plan. The plan proposes to install one additional monitoring well and sample one other soil boring to assess current soil contamination concentrations in those areas. The hope is that the sampling will demonstrate that the site has remediated to site cleanup levels. CRA is to provide a revised work plan. |
Robert Weimer |
| 8/31/2011 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 9/23/10. Up to 13 ug/l lead (5 ug/l cleanup level) and non-detect benzene and GRO. Contaminant concentrations have increased in 1 of the 3 monitoring wells sampled. The monitoring well (SMW-3) that previously had the highest lead levels was not sampled this event because of not enough water. Groundwater flow direction was to the northwest. Depth to groundwater is 15.62 to 17.95 feet below ground surface. Consultant recommends semi-annual groundwater monitoring. |
Robert Weimer |
| 10/13/2011 |
Site Characterization Workplan Approved |
Review and approve release investigation work plan. The work plan proposes to sample 2 soil borings and install one monitoring to help define the extent of the soil and groundwater contamination at the site. |
Robert Weimer |
| 12/2/2011 |
Document, Report, or Work plan Review - other |
Semi-annual groundwater monitoring event of 4/14/11. Up to 411 ug/l lead (5 ug/l cleanup level) and non-detect benzene and GRO. Contaminant concentrations have increased in 2 of the 3 monitoring wells sampled. The lead concentrations may be biased low because the samples were not preserved in the field. The monitoring well (SMW-3) that previously had the highest lead levels was not sampled this event because of not enough water. The monitoring well (SMW-3) that previously had the highest lead levels was not sampled this event because of not enough water. Groundwater flow direction was to the northwest. Depth to groundwater is 17.98 to 18.57 feet below ground surface. Consultant recommends semi-annual groundwater monitoring. |
Robert Weimer |
| 12/6/2011 |
Document, Report, or Work plan Review - other |
ADEC approves request for disposal of contaminated soil, decon water, and purge water at facilities in Oregon and Nevada. |
Robert Weimer |
| 1/7/2013 |
Document, Report, or Work plan Review - other |
First quarter groundwater monitoring event of 3/30/12. Up to 1.03 ug/l benzene, 2.32 ug/l lead (5 ug/l cleanup level), and non-detect GRO. Contaminant concentrations have increased in 0 of the 3 monitoring wells sampled. Groundwater flow direction was to the northwest. Depth to groundwater was 16 to 18 feet below ground surface. |
Robert Weimer |
| 1/7/2013 |
Document, Report, or Work plan Review - other |
Second quarter groundwater monitoring event of 6/12/12. Up to 4.33 ug/l lead (5 ug/l cleanup level) and non-detect benzene and GRO in the groundwater samples collected. Contaminant concentrations have increased in 1 of the 3 monitoring wells sampled. Groundwater flow direction was to the northeast. Depth to groundwater was 16 to 17 feet below ground surface. |
Robert Weimer |
| 1/7/2013 |
Document, Report, or Work plan Review - other |
Third quarter groundwater monitoring event of 8/16/12. Up to 39.1 ug/l lead (5 ug/l cleanup level), and non-detect benzene and GRO in the groundwater samples collected. Contaminant concentrations have increased in 2 of the 3 monitoring wells sampled. Groundwater flow direction was to the north by northeast. Depth to groundwater was 16 to 17 feet below ground surface. |
Robert Weimer |
| 1/9/2013 |
Document, Report, or Work plan Review - other |
On October 17-18, 2011 three soil borings were sampled and two of them were completed as monitoring wells SMW-3A and SMW-7. Up to 0.006 mg/kg benzene, and non-detect GRO, and DRO in the groundwater samples collected. Due to existing active tanks and utilities confirmation samples were not able to be collected at the areas were the contamination was previously identified. Future confirmation samples will be required when those areas are accessible. The two monitoring wells are to be sampled quarterly to establish trends. |
Robert Weimer |
| 3/22/2013 |
Update or Other Action |
DEC request that all sites where there has been no purge groundwater sampling conducted during the last year, that for the next sampling event that they do both no purge then purge sampling from each monitoring well, so we evaluate on a site specific basis whether no purge sampling has provided comparable data. The post purge well sampling for VOCs would need to be conducted via hydrasleeve, bladder pump, or in well pump. Non VOC sampling can be collected with a bailer or peristaltic pump (in addition to the VOC methods) if desired. The specific sampling methods will need to be documented in the report and included field notes.
If there is not enough time to do this adjustment for the planned sample event of March 26-April 4, then DEC requests that it be done on the following event. |
Robert Weimer |
| 5/31/2013 |
Document, Report, or Work plan Review - other |
Fourth quarter groundwater monitoring event of 10/3/12. Up to 0.19 ug/l benzene, 31 ug/l lead (5 ug/l cleanup level) and non-detect GRO in the groundwater samples collected. Contaminant concentrations have increased in 1 of the 3 monitoring wells sampled. Groundwater flow direction was to the north by northeast. Depth to groundwater was 15 to 16 feet below ground surface. |
Robert Weimer |
| 12/13/2013 |
Document, Report, or Work plan Review - other |
First quarter groundwater monitoring event of 3/29/13. Up to 1.37 ug/l benzene, 40 ug/l lead (5 ug/l cleanup level) and non-detect GRO in the groundwater samples collected. Contaminant concentrations have increased in 1 of the 2 monitoring wells sampled. Groundwater flow direction was to the east. Depth to groundwater was 16 to 17 feet below ground surface. Monitoring wells were not purged prior to sampling. Lead samples were collected using a bailer, the volatile sample was collected using hydrasleeve. Because the sample invterval was not documented for the hydrasleeve, those results are considered biased low. |
Robert Weimer |
| 1/6/2014 |
Document, Report, or Work plan Review - other |
Second quarter groundwater monitoring event of 6/5/13. Up to 1.89 ug/l benzene, 3.01 ug/l lead (5 ug/l cleanup level) and non-detect GRO in the groundwater samples collected. Contaminant concentrations have increased in 1 of the 3 monitoring wells sampled. Groundwater flow direction was to the east by southeast. Depth to groundwater was 15.78 to 16.95 feet below ground surface. Monitoring wells were not purged prior to sampling. Lead samples were collected using a bailer, the volatile sample was collected using hydrasleeve. Because the sample invterval was not documented for the hydrasleeve, those results are considered biased low. |
Robert Weimer |
| 3/3/2014 |
Document, Report, or Work plan Review - other |
Third quarter groundwater monitoring event of 8/1/13 with Hydrasleeve (no purge) and 8/7/13 with a bladder pump after purging. Up to 103 ug/l benzene, 0.212 mg/l GRO, 2.08 ug/l lead (5 ug/l cleanup level) in the groundwater samples collected. Contaminant concentrations have increased in 1 of the 5 monitoring wells sampled. Groundwater flow direction was to the southeast. Depth to groundwater was 15.90 to 17.02 feet below ground surface. Because the sample invterval was not documented for the hydrasleeve and the bladder pump, those results are considered biased low. |
Robert Weimer |
| 6/3/2014 |
Document, Report, or Work plan Review - other |
The January 2014 Site Investigation Work Plan is approved under the following conditions:
1. The sample from boring B is also to be analyzed for GRO, DRO, and PAHs.
2. The most likely contaminated sample from boring C also be analyzed for EDB, 1,2-DCA, and PAHs. All samples are to include total lead analysis.
3. The sample from boring D is also to be analyzed for PAH, RRO, DRO, GRO, BTEX, VOCs, EDB, 1,2-DCA, and PCBs.
4. The sample interval for all groundwater samples needs to be documented in the field notes and the report as being collected from top of the water column at the soil water interface.
5. All soil samples need soil moisture.
The work plan proposes to sample 5 soil borings and complete one of them as a monitoring well. Based on the results additional soil and groundwater sampling may be required.
|
Robert Weimer |
| 6/19/2014 |
Site Visit |
Site visit to oberve current site conditions |
Robert Weimer |
| 8/8/2014 |
Offsite Soil or Groundwater Disposal Approved |
ADEC approves request for transport and treatment of 1 drum of contaminated monitoring well purge water and 5 drums of contaminated soil. |
Robert Weimer |
| 9/2/2014 |
Document, Report, or Work plan Review - other |
Fourth quarter groundwater monitoring event of 10/3/13 with Bladder pump (purge) sampling. Up to 116 ug/l benzene, 0.65 mg/l GRO, and non-detect lead in the groundwater samples collected. Contaminant concentrations have increased in 1 of the 5 monitoring wells sampled. Groundwater flow direction was to the southeast. Depth to groundwater was 15.15 to 16.32 feet below ground surface. Because the sample interval was not documented for the bladder pump, are considered biased low and can't be used to evaluate contaminant trends, and extent of the groundwater contamination at this site. |
Robert Weimer |
| 10/20/2014 |
Offsite Soil or Groundwater Disposal Approved |
ADEC approves request to treat 2 drums of contaminated purge water. |
Robert Weimer |
| 2/18/2015 |
Document, Report, or Work plan Review - other |
Second quarter groundwater monitoring event of 6/9/14 to 6/17/14 with Bladder pump (purge) sampling. Up to 2.32 ug/l benzene, 7.98 ug/l lead (5 ug/l cleanup level) and non-detect GRO in the groundwater samples collected. Contaminant concentrations have increased in 3 of the 5 monitoring wells sampled. Groundwater flow direction was to the southeast. Depth to groundwater was 15.79 to 16.93 feet below ground surface. The sample interval for the bladder pump was not at the soil/water interface as required, it ranged from 1.02 feet to 1.39 feet below the soil/water interface, so the results are considered biased low and can't be used to evaluate contaminant trends, and extent of the groundwater contamination at this site. |
Robert Weimer |
| 4/20/2015 |
Document, Report, or Work plan Review - other |
First quarter groundwater monitoring event of 4/2/2014 with Bladder pump (purge) sampling. Up to 1.9 ug/l benzene, and non-detect GRO and lead in the groundwater samples collected. Contaminant concentrations have increased in 0 of the 5 monitoring wells sampled. Groundwater flow direction was to the southeast. Depth to groundwater was 15.79 to 16.93 feet below ground surface. The sample interval for the bladder pump was near the soil/water interface as required. |
Robert Weimer |
| 4/23/2015 |
Document, Report, or Work plan Review - other |
Third quarter groundwater monitoring event of 8/7/2014 with Bladder pump (purge) sampling. Up to 1.71 ug/l benzene, 6.84 ug/l lead (5 ug/l cleanup level), and non-detect GRO in the groundwater samples collected. Contaminant concentrations have increased in 5 of the 5 monitoring wells sampled. Groundwater flow direction was to the southeast. Depth to groundwater was 15.34 to 16.78 feet below ground surface. The sample interval for the bladder pump was near the soil/water interface as required. |
Robert Weimer |
| 6/22/2015 |
Document, Report, or Work plan Review - other |
Fourth quarter groundwater monitoring event of 10/17/2014 with Bladder pump (purge) sampling. Up to 284 ug/l benzene, 1.19 mg/l GRO, 5.41 ug/l lead (5 ug/l cleanup level). Contaminant concentrations have increased in 1 of the 5 monitoring wells sampled. Groundwater flow direction was to the southeast. Depth to groundwater was 14.05 to 16.38 feet below ground surface. The sample interval for the bladder pump was near the soil/water interface as required. |
Robert Weimer |
| 10/29/2015 |
Document, Report, or Work plan Review - other |
On June 19-20, 2014 two soil borings were sampled to help define the extent of the soil and groundwater contamination at this site. Soil boring MW-8 was located to the east of the underground storage tanks, and soil boring SB-2A was located beneath the former used oil tank. One of the soil borings was completed as a monitoring well (MW-8). Up to 19.8 mg/kg DRO, non-detect (<49.4 mg/kg) RRO, and non-detect (<0.0227 mg/kg) benzene in the soil samples collect from MW-8. Up to 3.76 mg/kg Arsenic, 14.7 mg/kg Chromium, and 3.24 mg/kg lead in the soil sample collected at 12 feet below ground surface at SB-2A, other analysis was not conducted due to insufficient soil volume to fill the other sample jars. Three of the proposed soil sampling locations (A, B, and C) were not sampled due to soil refusal using a hand auger. |
Robert Weimer |
| 1/29/2016 |
Document, Report, or Work plan Review - other |
March 27, 2015 groundwater monitoring event. Up to 22.5 ug/l benzene, 0.0531 mg/l GRO, 1.1 ug/l lead (5 ug/l cleanup level). Contaminant concentrations have increased in 1 of the 5 monitoring wells sampled. Groundwater flow direction was to the northeast. Depth to groundwater was 15.70 to 17.21 feet below ground surface. The sample interval for the bladder pump was near the soil/water interface as required. |
Robert Weimer |
| 2/8/2016 |
Document, Report, or Work plan Review - other |
June 6-7, 2015 groundwater monitoring event. Up to 5.4 ug/l benzene, 0.0239 mg/l GRO, 4.2 ug/l lead (5 ug/l cleanup level). Contaminant concentrations have increased in 1 of the 6 monitoring wells sampled. Groundwater flow direction was to the northeast. Depth to groundwater was 15.99 to 17.50 feet below ground surface. The sample interval for the bladder pump was near the soil/water interface as required. |
Robert Weimer |
| 2/22/2016 |
Document, Report, or Work plan Review - other |
August 29-30, 2015 groundwater monitoring event. Up to 2.4 ug/l benzene, non-detect GRO, 2.2 ug/l lead (5 ug/l cleanup level). Contaminant concentrations have increased in 0 of the 6 monitoring wells sampled. Groundwater flow direction was to the east. Depth to groundwater was 15.87 to 17.45 feet below ground surface. The sample interval for the submersible pump was near the soil/water interface as required. |
Robert Weimer |
| 3/7/2016 |
Document, Report, or Work plan Review - other |
October 17, 2015 groundwater monitoring event. Up to 0.26 ug/l benzene, 0.0316 mg/l GRO, 3.3 ug/l lead (5 ug/l cleanup level). Contaminant concentrations have increased in 2 of the 6 monitoring wells sampled. Groundwater flow direction was to the southeast. Depth to groundwater was 15.18 to 16.72 feet below ground surface. The sample interval for the submersible pump was near the soil/water interface as required after the monitoring wells were purged. |
Robert Weimer |
| 3/15/2016 |
Meeting or Teleconference Held |
Teleconference with Shell and their consultant (GES) to discuss future site work for site closure. They will submit a work plan for the 2016 groundwater monitoring that will include analysis for PAHs. DEC is requesting annual groundwater monitoring event to include PAHs. We discussed that since GRO (10,800 mg/kg) was left in the tank excavation over maximum allowable concentration (1,400 mg/kg) that area will need confirmation soil samples in the future demonstrating have been remediated below levels for closure with ICs. DRO at 10,700 mg/kg was left behind the building that needs further assessment. DEC is requesting the three areas (A, B, C) that were not sampled in 2014 be assessed. DEC requested rose diagrams showing historical groundwater flow directions be included in future site monitoring report maps. |
Robert Weimer |
| 7/27/2016 |
Document, Report, or Work plan Review - other |
DEC requested revised work plan for PAH sampling of selected monitoring wells at this site to help assess current concentrations in the groundwater. |
Robert Weimer |
| 8/3/2016 |
Meeting or Teleconference Held |
Teleconference with Shell and their consultant (GES) to discuss future site work for site closure. They will submit a revised work plan for the September/October 2016 groundwater monitoring to include PAHs. Rose diagrams showing historical groundwater flow directions are to be included in future site monitoring report maps. They will document which monitoring wells are damaged or not accessible, so they can be repaired, decommissioned, or possibly replaced. DRO at 10,700 mg/kg was left behind the building that needs further assessment. DEC is requesting a work plan for the assessment of the three areas (A, B, C) that were not sampled in 2014. |
Robert Weimer |
| 12/9/2016 |
Document, Report, or Work plan Review - other |
March 31, 2016 groundwater monitoring event. Up to 0.56 ug/l benzene, 0.0208 mg/l GRO, 3.3 ug/l lead (5 ug/l cleanup level). Contaminant concentrations have increased in 1 of the 5 monitoring wells sampled. Groundwater flow direction was to the east by southeast. Depth to groundwater was 16.01 to 17.5 feet below ground surface. The sample interval for the bladder pump was near the soil/water interface as required after the monitoring wells were purged. Monitoring well SMW-7 was not sampled because of ice in the well. That well exceeded benzene cleanup levels as recent as August 9, 2015, there have not been enough clean monitoring events to demonstrate that it meets cleanup levels seasonally. |
Robert Weimer |
| 12/15/2016 |
Meeting or Teleconference Held |
Teleconference with Shells consultant (GES) to discuss future site work for site closure. We discussed that the extent of the soil and groundwater contamination needs to be characterized before a site can be considered for closure. They will submit a proposal for DEC approval regarding future groundwater monitoring. They will submit and updated PAH sampling report with method detection limits.
DEC is requesting a work plan for the assessment of the three areas (A, B, C) that were not sampled in 2014. |
Robert Weimer |
| 5/26/2017 |
Document, Report, or Work plan Review - other |
September 28, 2016 groundwater monitoring event. Monitoring wells SMW-1, SMW-2, and SMW-7 were sampled for PAHs this sampling event. All of the samples were non-detect for PAHs. Groundwater flow direction was to the east. Depth to groundwater was 16.4 to 17.4 feet below ground surface. The sample interval for the bladder pump was near the soil/water interface as required after the monitoring wells were purged. |
Robert Weimer |
| 8/8/2017 |
Meeting or Teleconference Held |
Meeting with Shell with Shells consultant (GES) to discuss future site work for site closure. We discussed that the assessment for that contamination behind the building is not complete as to current soil concentrations and whether groundwater is impacted and if there is any product on the groundwater. We discussed that the contamination remaining under the gasoline USTs could be addressed under an IC to assess when accessible. |
Robert Weimer |
| 12/22/2017 |
Meeting or Teleconference Held |
Teleconference with Shell with Shells consultant (GES) to discuss future site work for site closure. We discussed that the assessment for that contamination behind the building is not complete as to current soil concentrations and whether groundwater is impacted and if there is any product on the groundwater. We discussed that the contamination remaining under the gasoline USTs could be addressed under an IC to assess when accessible. GES will provide figure showing utilities and contaminated areas and concentrations behind the building. |
Robert Weimer |
| 4/18/2018 |
Meeting or Teleconference Held |
Teleconference with Shell with Shells consultant (GES) to discuss future site work for site closure. We discussed that the assessment for that contamination behind the building is not complete as to current soil concentrations and whether groundwater is impacted and if there is any product on the groundwater. We discussed that the contamination remaining under the gasoline USTs could be addressed under an IC to assess when accessible. GES will provide figure showing utilities and contaminated areas and concentrations behind the building. GES to look at existing soil data to see if the lateral extent of the contamination behind the building has been defined. |
Robert Weimer |
| 8/15/2018 |
Meeting or Teleconference Held |
Meeting with Shell with Shells consultant (GES) to discuss future site work for site closure. DEC is to review the information provided regarding contamination left behind the building and utilities in that area, and the request for decommissioning site monitoring wells is to be evaluated after reviewing the site information. We discussed given the high BTEX concentrations left behind the building and the UST tank area to the northeast of the building DEC is requesting vapor intrusion sampling (soil gas or sub slab or indoor air during both frozen and non-frozen ground conditions) in accordance with a site specific approved work plan. They plan to submit the work plan soon. On all sites GES will provide a diagram showing the remaining soil contamination above migration to groundwater, human health, and maximum allowable cleanup levels. |
Robert Weimer |
| 1/17/2019 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 77704 1989 UST contamiantion. |
Robert Weimer |
| 3/19/2019 |
Document, Report, or Work plan Review - other |
DEC review and comment on February 25, 2019 indoor air sampling work plan. DEC requested a revised work plan with the following modifications:
1. Add another indoor air sample at the NE corner of the building in the NE storage room.
2. Move the outdoor air sample location so it is away from the UST vent pipes.
3. Include copies of field notes and QA/QC checklist in the report.
|
Robert Weimer |
| 3/20/2019 |
Document, Report, or Work plan Review - other |
DEC review and approval of the March 20, 2019 indoor air sampling work plan. They plan to collect one outdoor air sample and six indoor air samples along with one duplicate. |
Robert Weimer |
| 8/28/2019 |
Meeting or Teleconference Held |
Meeting with Shell with Shells consultant (GES) to discuss future site work for site closure. GES will provide a diagram showing the remaining soil contamination above migration to groundwater, human health, and maximum allowable cleanup levels on a figure showing the utilities behind the building. GES will submit a work plan for the decommissioning of the site monitoring wells. We discussed that they may need to conduct additional release investigation behind the building to define the extent of the contamination. |
Robert Weimer |
| 12/4/2019 |
Document, Report, or Work plan Review - other |
GES submitted an indoor air sampling report dated November 26, 2019. |
Randy Guintu |
| 12/10/2019 |
Document, Report, or Work plan Review - other |
On March 28, 2019 six indoor and one outdoor air samples were collected over a 24 hour period. Up to 2.04 ug/m3 benzene, 10.4 ug/m3 toluene, 1.65 ug/m3 ethylbenzene, 5.54 ug/m3 total xylenes, and 124 ug/m3 chloroform. The other detectable compounds were below 10% of the residential and commercial target levels. Benzene exceeded 10% of the commercial (16 ug/m3) target level. Chloroform exceeded commercial target level (5.3 ug/m3). |
Robert Weimer |
| 8/24/2020 |
Meeting or Teleconference Held |
Meeting with Shell and their consultant, GES to discuss site conditions, pending actions and future work at multiple sites. It was discussed that sites must be characterized both vertically and horizontally in all contaminated media to move forward with site closure with institutional controls (ICs). To move forward with site closure with ICs would also require landowner and stakeholder concurrence and the required documentation under the Uniform Environmental Covenants Act. Other discussions involved what steps needed to be taken to continue monitoring and sampling where necessary. |
Randy Guintu |
| 4/5/2021 |
Document, Report, or Work plan Review - other |
The ADEC received a Shell Oil US Product's work plan prepared by GES Inc on April 5, 2021. |
Randy Guintu |
| 4/28/2021 |
Site Characterization Workplan Approved |
The ADEC approved the site characterization work plan prepared by GES Inc on April 28, 2021. |
Randy Guintu |
| 2/3/2022 |
Document, Report, or Work plan Review - other |
The ADEC approves the December 2021 Well Decommissioning Report. Monitoring wells SMW-1, SMW-3A, SMW-6, and SMW-7 were decommissioned on October 29, 2021. SMW-2 was slated to be decommissioned, but could not be located day-of. |
Flannery Ballard |
| 9/27/2023 |
Update or Other Action |
The ADEC CSP has reviewed the Final Cleanup Report, dated December 7, 2022, and provided a comment/question email to GES and RP. |
Alena Voigt |
| 9/29/2023 |
Meeting or Teleconference Held |
Teleconference held with GES, Shell, ADEC PM and Supervisor regarding site and path towards closure. |
Alena Voigt |
| 10/16/2023 |
Update or Other Action |
Email sent to RP, GES, and landowner with covenant template. Site moving towards closure with ICs. |
Alena Voigt |
