| Action Date |
Action |
Description |
DEC Staff |
| 11/23/1990 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 77882 ADD; |
Former Staff |
| 11/23/1990 |
Site Added to Database |
|
Former Staff |
| 5/16/1996 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
LCAU; Project removed piping and dispenser islands for upgraded USTs. About 40 cyds of gasoline and 15 cyds of diesel contaminate soil was removed and sent to Organic Incineration Technologies (OIT) for remediation. |
Former Staff |
| 11/20/1997 |
Update or Other Action |
ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: MAPCO EXPRESS INC |
Former Staff |
| 1/14/2004 |
Leaking Underground Storage Tank Corrective Action Underway |
Approval of 2004 Work plan. |
Monica English |
| 11/15/2004 |
Update or Other Action |
Staff attend the annual environmental planning meeting with Tesoro and MWH, for activities to be conducted in 2005. |
Monica English |
| 2/22/2005 |
Update or Other Action |
ADEC issues approval for the 2005 calendar year Corrective Action work plan. |
Monica English |
| 10/9/2006 |
Update or Other Action |
Project manager changed from Monica English to Paul Horwath, per P.Horwath. |
Alyce Hughey |
| 1/30/2007 |
Document, Report, or Work plan Review - other |
Reviewed MWH's Tesoro 2 Go Mart #114, July 2006 Monitoring Event Report Final, which presented the results of a July 2006 sampling of three monitoring wells at the site. The site is undergoing active in-situ remediation, and long-term groundwater monitoring. The water data show that groundwater contaminant concentrations continue to improve at this site. P.Horwath |
Paul Horwath |
| 10/4/2007 |
Document, Report, or Work plan Review - other |
ADEC reviewed the May 2007 MWH March 2007 Monitoring Event Report Final report for this site. GW contaminant concentrations have fallen markedly in concentration over the past 9 years. No GW cleanup levels are currently exceeded. Air sparge and SVE treatment systems continue to operate at this site. |
Paul Horwath |
| 10/16/2007 |
Exposure Tracking Model Ranking |
Completed initial site ranking with the ETM. |
Paul Horwath |
| 4/24/2008 |
Document, Report, or Work plan Review - other |
Reviewed MWH's September 2007 Monitoring Event Report Final, dated March 2008. A GW air sparge treatment system and soil vapor extraction system continue to operate at this site. GW quality has improved and no monitoring wells tested exceeded any ADEC GW cleanup levels GRO or BTEX. Contamination detected in GW does not appear to have migrated offsite. |
Paul Horwath |
| 7/25/2008 |
Document, Report, or Work plan Review - other |
Reviewed the MWH, May 2007 Monitoring Event Report, dated June 2008, and the MWH, February 2008 Monitoring Event Report, dated May 2008. An increase in Benzene above the cleanup levels was detected in MW-1 in May of 2007, but benzene was not detected in MW-1 in February of 2008. The May 2007 Benzene concentration appears anomalous. The Soil Vapor Extraction System has been operating 24 hours a day and after some minor adjustments to the heater panel box and after changing the filter, the system continues to operate as designed. |
Alyce Hughey |
| 8/8/2008 |
Document, Report, or Work plan Review - other |
Reviewed the MWH, May 2007 Monitoring Event Report, dated June 2008, and the MWH, February 2008 Monitoring Event Report, dated May 2008, to provide oversight and training for Alyce Hughey. A significant increase in Benzene above the cleanup levels was detected in Monitoring Well #1 in May of 2007, however benzene was undetected in February of 2008. The Soil Vapor Extraction System and Air Sparge GW treatment systems continue to operate. Groundwater contamination appears confined to this property and the long term groundwater quality sampling and data indicate a substantial declining trend in contaminant concentrations. |
Paul Horwath |
| 10/23/2008 |
Document, Report, or Work plan Review - other |
Reviewed the May 2007 Monitoring Event Report, Final (Revised), the September 2007 Monitoring Event Report, Final (Revised), the February 2008 Monitoring Event Report, Final (Revised), all dated October 2008 from MWH for Paul Horwath. Revisions were submitted based on an error in the survey data used for the May report. The calculation of direction and gradient was removed from all relevant reports, and the text of the May 2007 report revised to indicate no direction or gardient was reported for the event. |
Alyce Hughey |
| 2/27/2009 |
Document, Report, or Work plan Review - other |
Reviewed the December 2008 Rebound Test and Monitoring Event Report, dated January 2009 from MWH for Paul Horwath, and provided him a summary of the report for his review and oversight. MW-1 detected Benzene and DRO below the groundwater cleanup levels during this monitoring event after a year of non-detects for Benzene and DRO. All other wells have remained below the groundwater cleanup levels since 2001. Based on the results of the rebound test an additional sampling of the wells is recommended for this site in order to determine if the contamination at the site has been affectively been addressed. The findings of the next sampling event and evaluation of the detailed report to be submitted to the department in the first quarter of 2009, will determine if the site should be considered for a Cleanup Complete with Institutional Controls. |
Alyce Hughey |
| 4/24/2009 |
Update or Other Action |
Updated Ranking done for Corrective Action Complete Determination-Institutional Controls determination. |
Alyce Hughey |
| 4/24/2009 |
Document, Report, or Work plan Review - other |
Reviewed the Summary Report and Request for Clean-up Complete with Institutional Controls Report, dated March 19, 2009 for Paul Horwath and prepared a summary of the project file and report for his review and oversight in making a Clean-up Complete with Institutional Controls determination. |
Alyce Hughey |
| 4/24/2009 |
Update or Other Action |
ADEC received a closure request report from MWH on March 27, 2009. Upon review of that report, an e-mail response was sent to MWH informing them that the treatment systems should remain turned off, and another groundwater sampling event should be performed in September or later in 2009 in order to determine if the groundwater quality at the site remains below ADEC GW cleanup levels with the Air Sparge and SVE treatments systems turned off for a period of eight (8) or more months. Upon receipt of that GW quality sampling and analysis report, ADEC will revisit the request for site closure. |
Paul Horwath |
| 7/6/2010 |
Document, Report, or Work plan Review - other |
Reviewed the results for an additional sampling event for Sulfolane, conducted on June 15th and 16th, 2010 from MW-1 located on the site. Sample results are non-detect for Sulfolane from MW-1. |
Alyce Hughey |
| 11/16/2010 |
Meeting or Teleconference Held |
Staff attended the annual environmental planning meeting with Tesoro and MWH to discuss the workplans for 2011. |
Alyce Hughey |
| 11/16/2010 |
Meeting or Teleconference Held |
Staff attended the annual environmental planning meeting with Tesoro and MWH to discuss the workplans for 2011. |
Paul Horwath |
| 12/16/2010 |
Document, Report, or Work plan Review - other |
Reviewed the September 2010 Rebound Test and Monitoring Event Report, dated November 2010, from MWH. During the September 2010 monitoring event DRO groundwater contamination was detected at 1.56 mg/L within monitoring well MW-1. The other two monitoring wells tested did not detect any of the analytes tested for. The results of the rebound test indicated that very low levels of contamination are being removed by the system; therefore the continued operation of the in-situ remediation system at the site would be of limited value. |
Alyce Hughey |
| 2/17/2011 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 77882 UST Systems. |
Alyce Hughey |
| 3/3/2011 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 77882 UST Systems. |
Paul Horwath |
| 3/4/2011 |
Cleanup Complete Determination Issued |
A 'corrective action complete without any ICs' decision letter was issued to Tesoro, and cc'd to the land owner. |
Paul Horwath |
| 3/4/2011 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 77882 UST Systems. |
Paul Horwath |
| 3/9/2011 |
Institutional Control Record Removed |
Institutional Controls have been removed. |
Paul Horwath |
| 1/24/2012 |
Document, Report, or Work plan Review - other |
Reviewed the Monitoring Wells and In-situ Remediation System Decommissioning Report, dated December 30, 2011, from MWH. The four groundwater monitoring wells (G-1, G-2, MW-1 and G-6), four air sparge wells (AS-1 through AS-4), seven soil vapor extraction wells (SVE-1 through SVE-7), one vapor stripping/circulation well (VSC-1) and associated piping was decommissioned on August 30 through Septembeter 1, 2011 according the ADEC Monitoring Well Guidance dated February 2009. |
Alyce Hughey |
