| Action Date |
Action |
Description |
DEC Staff |
| 8/5/1996 |
Site Added to Database |
|
Former Staff |
| 8/5/1996 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 78026 (Added by System) |
Robert Weimer |
| 8/5/1996 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
|
Former Staff |
| 8/6/1996 |
Underground Storage Tank Site Characterization or Assessment |
Site assessment conducted during facility upgrade documented fuel contamination at the dispenser and piping locations. The assessment was not completed as required for the dispensers/piping (excavated to 2 to 3 feet below ground surface) and around the tanks (excavated 3 to 5 feet below ground surface) as they were not collected at the highest field screening readings as required. The field reading device stopped functioning early in the field work and sampling work continued without collecting field readings. The 25 cubic yards of soil that was excavated during the upgrade and was disposed of at the Texaco fire service road at the port of Anchorage. Contamination was left at the dispenser islands (DRO 448 mg/kg).
|
Robert Weimer |
| 5/4/2006 |
Update or Other Action |
ADEC issues a conditional approval letter for the installation and sampling of 5 monitoring wells. The samples are to be analyzed for BTEX, GRO, DRO, RRO, and VOCs. |
Robert Weimer |
| 5/12/2008 |
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 |
| 7/16/2008 |
Document, Report, or Work plan Review - other |
On May 21-24, 2007 and June 7-8, 2007 five monitoring wells were installed and were sampled. Up to 59.2 mg/kg RRO in the soil samples collected. BTEX, GRO, and DRO soil samples were non-detect. Non-detect BTEX, DRO, and RRO in the groundwater. Depth to groundwater was between 31.63 and 32.81 feet below ground surface. Groundwater flow direction was to the west by northwest. Several shallow soil samples are biased low because the boring was air knifed to that depth. Soil and groundwater samples collected in monitoring wells MW-4 and MW-5 were not sampled for BTEX, GRO, and VOC's are required in the ADEC workplan approval letter. Groundwater samples were not analyzed for GRO as required. QA/QC problems with the soil data. Monitoring wells have a screened interval from 30 to 40 feet below ground surface. |
Robert Weimer |
| 7/17/2008 |
Document, Report, or Work plan Review - other |
September 25, 2007 groundwater sampling event. Up to 0.69 ug/l chloroform (100 ug/l cleanup level), 0.93 ug/l PCE (5 ug/l cleanup level), and non-detect benzene, RRO, and DRO in the groundwater samples collected. Depth to groundwater was 32.96 to 33.32 feet below ground surface. Groundwater flow direction was to the west. |
Robert Weimer |
| 7/17/2008 |
Document, Report, or Work plan Review - other |
December 11, 2007 groundwater sampling event. Up to 0.71 ug/l chloroform (100 ug/l cleanup level), 0.85 ug/l PCE (5 ug/l cleanup level) and non-detect benzene, RRO, and DRO in the groundwater samples collected. Depth to groundwater was 32.90 to 33.69 feet below ground surface. Groundwater flow direction was to the west. |
Robert Weimer |
| 7/18/2008 |
Document, Report, or Work plan Review - other |
March 30, 2008 groundwater sampling event. Up to 0.63 ug/l chloroform (100 ug/l cleanup level), 0.86 ug/l PCE (5 ug/l cleanup level) and non-detect benzene, RRO, and DRO in the groundwater samples collected. Depth to groundwater was 32.01 to 33.14 feet below ground surface. Groundwater flow direction was to the west. |
Robert Weimer |
| 11/26/2008 |
Document, Report, or Work plan Review - other |
June 12, 2008 groundwater sampling event. Up to 1.1 ug/l PCE (5 ug/l cleanup level) and non-detect chloroform, benzene, RRO, and DRO in the groundwater samples collected. Depth to groundwater was 31.36 to 32.48 feet below ground surface. Groundwater flow direction was to the west. |
Robert Weimer |
| 1/6/2009 |
Document, Report, or Work plan Review - other |
September 19, 2008 groundwater sampling event. Up to 0.84 ug/l chloroform (100 ug/l cleanup level), 1.2 ug/l PCE (5 ug/l cleanup level) and non-detect benzene, RRO, and DRO in the groundwater samples collected. Depth to groundwater was 31.19 to 32.32 feet below ground surface. Groundwater flow direction was to the north west. |
Robert Weimer |
| 5/1/2009 |
Document, Report, or Work plan Review - other |
December 2, 2008 groundwater sampling event. Up to 0.68 ug/l chloroform (100 ug/l cleanup level), 1.0 ug/l PCE (5 ug/l cleanup level)and non-detect benzene, RRO, GRO and DRO in the groundwater samples collected. Depth to groundwater was 31.71 to 33.84 feet below ground surface. Groundwater flow direction was to the north east. |
Robert Weimer |
| 7/27/2009 |
Document, Report, or Work plan Review - other |
March 23, 2009 groundwater sampling event. Five monitoring wells were sampled. Up to 0.93 ug/l chloroform (100 ug/l cleanup level), 1.3 ug/l PCE (5 ug/l cleanup level) and non-detect benzene, RRO, GRO, and DRO in the groundwater samples collected. Depth to groundwater was 30.06 to 33.14 feet below ground surface. Groundwater flow direction was to the northeast. |
Robert Weimer |
| 8/25/2009 |
Document, Report, or Work plan Review - other |
June 8, 2009 groundwater sampling event. Five monitoring wells were sampled. Up to 0.87 ug/l chloroform (100 ug/l cleanup level), 1.0 ug/l PCE (5 ug/l cleanup level) and non-detect benzene, RRO, GRO, and DRO in the groundwater samples collected. Contamination decreased. Depth to groundwater was 31.98 to 33.14 feet below ground surface. Groundwater flow direction was to the east. |
Robert Weimer |
| 1/6/2010 |
Document, Report, or Work plan Review - other |
September 16, 2009 groundwater sampling event. Five monitoring wells were sampled. Up to 0.79 ug/l chloroform (100 ug/l cleanup level), 0.6 ug/l PCE (5 ug/l cleanup level) and non-detect benzene, RRO, GRO, and DRO in the groundwater samples collected. Contamination decreased. Depth to groundwater was 32.19 to 33.32 feet below ground surface. Groundwater flow direction was to the east. |
Robert Weimer |
| 3/22/2010 |
Document, Report, or Work plan Review - other |
December 9, 2009 groundwater sampling event. Five monitoring wells were sampled. Up to 0.72 ug/l chloroform (100 ug/l cleanup level), 0.89 ug/l PCE (5 ug/l cleanup level) and non-detect benzene, RRO, GRO, and DRO in the groundwater samples collected. Contamination increased in 2 of the 5 monitoring wells sampled. Depth to groundwater was 32.29 to 33.42 feet below ground surface. Groundwater flow direction was to the west.
|
Robert Weimer |
| 3/23/2010 |
Update or Other Action |
DEC approves requests to reduce groundwater monitoring from quarterly to semi-annual. |
Robert Weimer |
| 5/7/2010 |
Document, Report, or Work plan Review - other |
March 10, 2010 groundwater sampling event. Five monitoring wells were sampled. Up to 0.80 ug/l chloroform (100 ug/l cleanup level), 0.81 ug/l PCE (5 ug/l cleanup level) and non-detect benzene, RRO, GRO, and DRO in the groundwater samples collected. Contamination increased in 1 of the 5 monitoring wells sampled. Depth to groundwater was 32.58 to 33.62 feet below ground surface. Groundwater flow direction was to the west. |
Robert Weimer |
| 5/5/2011 |
Document, Report, or Work plan Review - other |
May 15, 2010 groundwater sampling event. Five monitoring wells were sampled. Up to 0.82 ug/l chloroform (100 ug/l cleanup level), 1.0 ug/l PCE (5 ug/l cleanup level) and non-detect benzene, RRO, GRO, and DRO in the groundwater samples collected. Contamination increased in 4 of the 5 monitoring wells sampled. Depth to groundwater was 31.76 to 32.94 feet below ground surface. Groundwater flow direction was to the west. |
Robert Weimer |
| 7/20/2011 |
Offsite Soil or Groundwater Disposal Approved |
ADEC approves request for transport and treatment of 1 drum of contaminated monitoring well purge water. |
Robert Weimer |
| 11/28/2011 |
Offsite Soil or Groundwater Disposal Approved |
ADEC approves request for transport and treatment of 1 drum of contaminated monitoring well purge water. |
Robert Weimer |
| 3/2/2012 |
Document, Report, or Work plan Review - other |
April 14, 2011 groundwater sampling event. Five monitoring wells were sampled. Up to 0.6 ug/l chloroform (100 ug/l cleanup level), 0.82 ug/l PCE (5 ug/l cleanup level) and non-detect benzene, RRO, GRO, and DRO in the groundwater samples collected. Contamination increased in 0 of the 5 monitoring wells sampled. Depth to groundwater was 32 to 33 feet below ground surface. Groundwater flow direction was to the west. |
Robert Weimer |
| 3/2/2012 |
Conceptual Site Model Submitted |
Conceptual Site Model (CSM) dated December 1, 2011. The CSM identified that the site is currently commercial but could be used as residential in the future (zoned B-3). |
Robert Weimer |
| 8/14/2012 |
Document, Report, or Work plan Review - other |
October 5, 2011 groundwater sampling event. Five monitoring wells were sampled. The samples were non-detect for benzene, GRO, RRO, chloroform, MTBE, and PCE and in the groundwater samples collected. Contamination increased in 0 of the 5 monitoring wells sampled. Depth to groundwater was 32 to 33 feet below ground surface. Groundwater flow direction was to the northwest. |
Robert Weimer |
| 10/30/2012 |
Offsite Soil or Groundwater Disposal Approved |
ADEC approves request for transport and treatment of 1 drum of contaminated monitoring well purge water. |
Robert Weimer |
| 1/31/2013 |
Document, Report, or Work plan Review - other |
June 14-15, 2012 groundwater sampling event. Five monitoring wells were sampled. The samples were non-detect for benzene, GRO, RRO, chloroform, MTBE, and PCE and in the groundwater samples collected. Contamination increased in 0 of the 5 monitoring wells sampled. Depth to groundwater was 31 to 32 feet below ground surface. Groundwater flow direction was to the northwest. Samples were collected with bladder pump after monitoring wells were purged. |
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 |
| 5/8/2013 |
Update or Other Action |
DEC confirmed that since the previous groundwater samples were collected after purging, that the DEC is not requesting a purge/no purge comparison sampling event for this site. |
Robert Weimer |
| 10/1/2013 |
Document, Report, or Work plan Review - other |
DEC approved September 10, 2013 Site Investigation Work Plan. The plan proposes to install soil gas probes and sub-slab vapor probes and to monitor the groundwater for metals and PAHs.
There will need to be another late winter or early spring vapor sampling event conducted with frozen ground conditions.
3.3.1 – Recommend 1 Liter Summa Canisters to reduce sample volume and ensure a more representative sample.
3.3.3 - Recommend analyze helium with a portable hand held device so any leaks can be fixed in the field.
3.3.3 – If possible need to do a "shut in" leak test as described in the DEC guidance.
1.2.4 – Recommend three volumes of sample train purged prior to sample collection.
|
Robert Weimer |
| 3/5/2014 |
Document, Report, or Work plan Review - other |
June 17, 2013 groundwater sampling event. Five monitoring wells were sampled. The samples were non-detect for benzene, GRO, RRO, chloroform, MTBE, and PCE and in the groundwater samples collected. Contamination increased in 0 of the 5 monitoring wells sampled. Depth to groundwater was 31 to 32 feet below ground surface. Groundwater flow direction was to the west by northwest. Samples were collected with bladder pump after monitoring wells were purged, but the results may be biased low because the sample interval was not documented in the report or field notes. |
Robert Weimer |
| 3/11/2014 |
Site Characterization Report Approved |
Review of Vapor Intrusion Site Investigation report. Two soil gas probes at 5 feet below ground surface (bgs)and one sub-slab vapor probe at 1.5 feet bgs were installed and sampled on October 2-4, 2013 at the site. Up to 0.857 ppbv benzene (1.14 ppbv screening level), 61.5 ppbv PCE (262 ppbv screening level), 0.299 ppv TCE (16.1 ppbv screening level). There will need at least another late winter or early spring vapor sampling event conducted with frozen ground conditions. |
Robert Weimer |
| 5/19/2014 |
Document, Report, or Work plan Review - other |
August 5, 2013 groundwater sampling event. Two monitoring wells were sampled. The samples were non-detect for benzene, GRO, RRO, chloroform, MTBE, and PCE and in the groundwater samples collected. Groundwater samples were also analyzed for PAH and metals. The PAH samples were non-detect. Metals analysis was non-detect except for barium that was up to 9.1 ug/l (2,000 ug/l cleanup level). Depth to groundwater was 32.4 to 32.59 feet below ground surface. Groundwater flow direction previously was to the west by northwest. Samples were collected with bladder pump after monitoring wells were purged, but the results may be biased low because the sample interval was not documented in the report or field notes. |
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. |
Robert Weimer |
| 2/11/2015 |
Document, Report, or Work plan Review - other |
June 12, 2014 groundwater sampling event. Two monitoring wells were sampled. Up to 0.423 ug/l PCE (5 ug/l cleanup level) and non-detect for benzene, GRO, RRO, chloroform, and MTBE in the groundwater samples collected. Contamination increased in 1 of the 5 monitoring wells sampled. Depth to groundwater was 31.51 to 32.66 feet below ground surface. Groundwater flow direction previously was to the west by southwest. Samples were collected with bladder pump after monitoring wells were purged. The sample from monitoring well MW-5 may be biased low because the pump intake depth was not recorded. |
Robert Weimer |
| 8/7/2015 |
Document, Report, or Work plan Review - other |
Review of Vapor Intrusion Site Investigation report for March 28, 2014 frozen ground conditions vapor sampling. Two soil gas probes at 5 feet below ground surface (bgs)and one sub-slab vapor probe at 1.5 feet bgs were installed and sampled on October 2-4, 2013 at the site. The soil gas samples had up to non-detect (<0.500 ppbv) benzene (50.16 ppbv screening level), 41.5 ppbv PCE (265.5 ppbv screening level), non-detect (<0.400 ppbv) TCE (16.4 ppbv screening level). Because helium was detected in the vapor sample from the sub-slab probe, it results are influenced by indoor air because of leakage. A second unfrozen ground site condition soil gas sampling is scheduled for October 2014. |
Robert Weimer |
| 8/31/2015 |
Document, Report, or Work plan Review - other |
Review of Vapor Intrusion Site Investigation report for October 2-3, 2014 non-frozen ground conditions vapor sampling. Two soil gas probes at 5 feet below ground surface (bgs) and one sub-slab vapor probe at 1.5 feet bgs were installed and sampled on October 2-4, 2013 at the site. The soil gas samples had up to 0.857 ppbv benzene (50.16 ppbv commercial screening level), 61.5 ppbv PCE (265.5 ppbv commercial screening level), 0.299 ppbv TCE (16.4 ppbv commercial screening level). Because helium was detected in the vapor sample from the sub-slab probe and near slab probes, the results are influenced by indoor air because of leakage. Because results PCE results are greater than 10% of the screening level additional vapor sampling is required. |
Robert Weimer |
| 2/2/2016 |
Document, Report, or Work plan Review - other |
June 26-27, 2015 groundwater sampling event. Two monitoring wells were sampled. Up to 0.58 ug/l PCE (5 ug/l cleanup level), 0.031 mg/kg DRO, and non-detect for benzene, RRO, chloroform, and MTBE in the groundwater samples collected. Contamination increased in 1 of the 5 monitoring wells sampled. Depth to groundwater was 32.15 to 33.30 feet below ground surface. Groundwater flow direction previously was to the west. Samples were collected with bladder pump at the top of water column after 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, BTEX, GRO, DRO, RRO, full VOCs, metals, EDB and 1,2-DCA. We also discussed that additional vapor intrusion (VI) sampling will need to be conducted in frozen and non-frozen conditions with either indoor air or repaired soil gas sampling in accordance with a new approved work plan. 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. DEC is requesting annual groundwater monitoring event to include PAHs, BTEX, GRO, DRO, RRO, full VOCs, metals, EDB and 1,2-DCA. We also discussed that additional vapor intrusion (VI) sampling will need to be conducted in frozen and non-frozen conditions with either indoor air or repaired soil gas sampling in accordance with a new approved work plan. |
Robert Weimer |
| 12/12/2016 |
Document, Report, or Work plan Review - other |
September 28, 2016 groundwater sampling event. Two monitoring wells were sampled. Up to 0.567 mg/kg DRO, metals were below default cleanup levels, and non-detect for PCE, benzene, RRO, chloroform, PAHs, and MTBE in the groundwater samples collected. Benzo(a)anthracene and Dibenzo(a,h)anthracene reporting limit exceeded cleanup levels. Contamination increased in 1 of the 3 monitoring wells sampled. Depth to groundwater was 31.45 to 32.62 feet below ground surface. Groundwater flow direction was to the west. Samples were collected with bladder pump at the top of water column after monitoring wells were purged. |
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 vapor intrusion in the building. |
Robert Weimer |
| 8/2/2017 |
Document, Report, or Work plan Review - other |
DEC conditionally approves work plan to collect indoor and outdoor air samples to help assess potential exposure to subsurface vapor migration into the service station building located on the property. The work plan is approved with the modification that the outdoor air sample location be placed so it is upwind of the prevailing wind direction near the building air intake if possible. |
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 they will conduct indoor air sampling of the on-property building during frozen and non-frozen ground conditions. Based on the indoor air sampling evaluate the site for closure with IC's. |
Robert Weimer |
| 12/11/2017 |
Document, Report, or Work plan Review - other |
Review of Indoor Air Sampling report for September 28-29, 2017 non-frozen ground indoor air sampling. Five indoor air samples (including a duplicate) and one outdoor air sample (on the roof near the building air intake) were collected. The indoor air samples had up to 59.1 ug/m3 Benzene (16 ug/m3 commercial screening level), 17.9 ug/m3 Ethylbenzene (49 ug/m3 commercial screening level), 8.35 ug/m3 1,2,4-Trimethylbenzene (31 ug/m3 commercial screening level), 88.1 ug/m3 total Xylenes (440 ug/m3 commercial screening level), non-detect PCE, TCE and Naphthalene. The other detected compounds were below 10% of the screening level. The outdoor air sample had up to 1.22 ug/m3 benzene, 1.67 ug/m3 Ethylbenzene, non-detect 1,2,4-Trimethylbenzene, 5.57 ug/m3 total Xylenes, and non-detect PCE, TCE and Naphthalene. They plan to conduct indoor air sampling during frozen ground conditions in the winter of 2017. Because the indoor air sample results were above 10% of the screening levels (and exceeded the screening level for benzene in 3 of 4 indoor air sampling locations) additional non-frozen ground indoor air sampling is required. While the current use is commercial, the property is zoned for residential. |
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 they will conduct indoor air sampling of the on-property building during frozen ground conditions. We discussed the results of the September 2017 indoor air sampling that exceeded levels for benzene. Shell/GES is to contact owner/operator about the contaminants in the indoor air. Based on future indoor air sampling evaluate the site for closure. |
Robert Weimer |
| 1/9/2018 |
Update or Other Action |
Email from GES that today they had spoken with Irwin Dahlman who is the manager of the Shell station/restaurant about the indoor air concentrations and to expect a call from DEC HHS regarding the exposure to workers in the building. |
Robert Weimer |
| 4/5/2018 |
Document, Report, or Work plan Review - other |
Review of Indoor Air Sampling report for February 20-21, 2018 frozen ground indoor air sampling. Six indoor air samples (including a duplicate) and one outdoor air sample (nw corner of property) were collected. The indoor air samples had up to 3.26 ug/m3 Benzene (3.6 ug/m3 residential screening level and 16 ug/m3 commercial screening level), 2.1 ug/m3 Ethylbenzene (49 ug/m3 commercial screening level), non-detect 1,2,4-Trimethylbenzene (7.3 ug/m3 residential screening level and 31 ug/m3 commercial screening level), 14.36 ug/m3 total Xylenes (440 ug/m3 commercial screening level), non-detect PCE, TCE and Naphthalene. The other detected compounds were below 10% of the screening level. The outdoor air sample had up to 1.19 ug/m3 benzene, non-detect Ethylbenzene, non-detect 1,2,4-Trimethylbenzene, 2.11 ug/m3 total Xylenes, and non-detect PCE, TCE and Naphthalene. Need to conduct indoor air sampling during non-frozen ground conditions in 2018 to compare to 2017 concentrations. While the current use is commercial, the property is zoned for residential. |
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 they will conduct indoor air sampling of the on-property building during non-frozen ground conditions. We discussed the results of the September 2017 indoor air sampling that exceeded levels for benzene and they will need another indoor air sampling event in the fall of 2018. We discussed that there were BTEX soil contamination was identified at the tank, piping, and dispenser areas near the building in 1996. GES is to provide a figure showing areas over MTGW and human health cleanup levels and a work plan for decommissioning the site monitoring wells. |
Robert Weimer |
| 8/15/2018 |
Meeting or Teleconference Held |
Meeting with Shell with Shells consultant (GES) to discuss future site work for site closure. We discussed that they will conduct indoor air sampling of the on-property building during non-frozen ground conditions. We discussed the results of the September 2017 indoor air sampling that exceeded levels for benzene and they will need another indoor air sampling event in the fall of 2018. GES is to provide a figure showing areas over MTGW, human health, and maximum allowable cleanup levels. Conditional approval letter for the decommissioning of the site monitoring wells is to be issued soon. They asked if they would need to analyze for full VOCs or just benzene. 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 |
| 8/31/2018 |
Document, Report, or Work plan Review - other |
DEC approves work plan to decommission all of the remaining site monitoring wells. |
Robert Weimer |
| 2/15/2019 |
Document, Report, or Work plan Review - other |
On September 25, 2018 monitoring wells MW-1, MW-2, MW-3, MW-4, and MW-5 and soil vapor probes SV-1 and SV-2 were decommissioned in accordance with the approved work plan. Prior to decommissioning all of the monitoring wells where checked for any product and none was found. |
Robert Weimer |
| 2/22/2019 |
Document, Report, or Work plan Review - other |
Review of Indoor Air Sampling report for September 26-27, 2018 non-frozen ground indoor air sampling. Five indoor air samples (including a duplicate) and one outdoor air sample (northwest corner of property) were collected. The indoor air samples had up to 3.34 ug/m3 Benzene (3.6 ug/m3 residential screening level and 16 ug/m3 commercial screening level), 4.86 ug/m3 Ethylbenzene (11 ug/m3 residential screening level and 49 ug/m3 commercial screening level), 4.72 ug/m3 1,2,4-Trimethylbenzene (7.3 ug/m3 residential screening level and 31 ug/m3 commercial screening level), 26.88 ug/m3 total Xylenes (100 ug/m3 residential screening level and 440 ug/m3 commercial screening level), 26.0 ug/m3 Toluene (3,800 ug/m3 residential screening level and 7,500 ug/m3 commercial screening level), non-detect PCE, TCE and Naphthalene. The other detected compounds were below 10% of the screening level. The outdoor air sample had up to 0.655 ug/m3 benzene, 3.08 ug/m3 Toluene, non-detect Ethylbenzene, non-detect 1,2,4-Trimethylbenzene, non-detect total Xylenes, and non-detect PCE, TCE and Naphthalene. While the current use is commercial, the property is zoned for residential. |
Robert Weimer |
| 2/25/2019 |
Update or Other Action |
Consultant is to provide a diagram showing the remaining soil contamination above migration to groundwater, human health, and maximum allowable cleanup levels so the site can evaluated for closure. |
Robert Weimer |
| 6/27/2019 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 78026 1996 UST system contamination. |
Robert Weimer |
| 6/28/2019 |
Cleanup Complete Determination Issued |
|
Robert Weimer |
