| Action Date |
Action |
Description |
DEC Staff |
| 9/5/1987 |
Site Visit |
FI; Hart Crowser drilled and sampled 6 borings at store #5014. Soil contamination encountered. Portions of report received by ADEC 8/2/89. |
Former Staff |
| 6/15/1989 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 77660 ADD; |
Former Staff |
| 6/15/1989 |
Site Added to Database |
|
Former Staff |
| 6/16/1989 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
LCAU; :LCAU Date changed DB conversion |
Former Staff |
| 6/26/1989 |
Update or Other Action |
REM; Hart Crowser monitored the removal of USTs by Matrix Construction. Analytical soil samples taken from the UST excavations indicate cleanup levels attained. Mapco on 4/17/89 indicated underground gasoline storage tanks and lines would be removed. Hart Crowser's 8/30/89 UST removal report does not address the piping and gasoline USTs removed with analytical sampling. |
Former Staff |
| 9/28/1989 |
Update or Other Action |
REM; Hart Crowser disposal plan for 500 cubic yards of contaminated soil at AS&G. ADEC approval 9/28/89. AS&G processed 787 tons on 12/14 and 12/15/89. ADEC received written confirmation 2/20/90. |
Former Staff |
| 10/6/1989 |
Update or Other Action |
REM; Hart Crowser plan to transport waste oil contaminated soils from Store #5014 to #5002. Plan to treat with vapor extraction. ADEC approval on 10/6/89 required an ultimate disposal plan be submitted to ADEC by 10/6/90. |
Former Staff |
| 12/15/1989 |
Leaking Underground Storage Tank Corrective Action Underway |
RAPR; Hart Crowser plan for assessing the extent of site contamination; resubmitted 3/27/90; approved by ADEC on 4/5/90. |
Former Staff |
| 5/15/1990 |
Leaking Underground Storage Tank Corrective Action Underway |
RAPR; Shannon & Wilson submits a work plan for site assessment work which basically follows the Hart Crowser work plan approved on 4/5/90. Verbal approval by ADEC on 5/16/90. |
Former Staff |
| 5/16/1990 |
Underground Storage Tank Site Characterization or Assessment |
PA; Shannon & Wilson water well survey within 1/4 mile radius of the site. No private wells were found to be located downgradient of site. A second water well survey requested by ADEC due by 1/1/91. Focus to be on wells within 1/4 mile and downgradient of site. |
Former Staff |
| 5/21/1990 |
Release Investigation |
SI; Shannon & Wilson petroleum hydrocarbon assessment report for store #5014. Groundwater was encountered at about 28 feet below the surface at the station site and 7 feet at the base of the slope below the station. Groundwater flows toward the northwest. Soil sample B2S24 taken on 5/21/90 at Boring B-2 from about 35.0 feet had 6.83 ppm BTEX and 40 ppm TPH. A shallow soil sample B5S1, taken at 3 feet from Boring B-5 on 6/10/90 had 273 ppm TPH. A water sample from monitoring well MW-4 on 6/11/90 had 13 ppm benzene. On 6/11/90 a water sample from MW-5 contained 0.012 ppm dichloroethane. |
Former Staff |
| 6/11/1990 |
Long Term Monitoring Established |
MS; Shannon & Wilson quarterly groundwater sampling report. 5 monitoring wells were sampled for EPA 601/602. Direction of groundwater towards NW. A water sample from monitoring well B4/MW on 9/27/90 had 8.3 ppm benzene. On 9/27/90 sample B5MWW2 from monitoring well B5/MW had 0.0013 ppm dichloroethane. |
Former Staff |
| 7/17/1990 |
Leaking Underground Storage Tank Corrective Action Underway |
RAPR; ADEC requests Mapco to present a plan addressing the contamination identified in the 7/90 site assessment. Quarterly groundwater sampling and monthly groundwater level measurements. |
Former Staff |
| 12/13/1990 |
Update or Other Action |
UPD; S |
Former Staff |
| 1/3/1991 |
Long Term Monitoring Established |
MS; Shannon & Wilson sends in additional water well search downgradient from site. It identified 14 water wells in vicinity but only 1 of them was within 1/4 mi. radius-Chester Valley Veterinary Hospital. Currently an active well 156 feet deep. |
Former Staff |
| 1/18/1991 |
Long Term Monitoring Established |
MS; Shannon & Wilson sent groundwater flow monitoring results for Dec. '90. Upper limits of BTEX in sample B4/MWW3 were 8.3 ppm benzene, 23.5 ppm toluene, 2.9 ppm ethylbenzene & 12.8 ppm xylenes. Halogenated volatile organics .0045 ppm cloroform, .0032 ppm 1,2-dichloroethane. Flow direction & gradient of groundwater beneath site not changed significantly during past 7 months. |
Former Staff |
| 2/1/1991 |
Long Term Monitoring Established |
MS; Shannon & Wilson sampling results received. Results from 3/91 sampling period showed an increase in the total BTEX values for monitoring wells B4/MW & B5/MW. Upper limit was 10.8 ppm benzene in sample B4MWW4. Samples B4MWW4 & B5MWW4 had to be diluted 1000 & 50 times respectively to analyze the aromatic volatile organics. |
Former Staff |
| 2/8/1991 |
Long Term Monitoring Established |
MS; DEC received results from 502 analysis of water samples obtained from 2 downgradient wells. The results were non-detectable levels of contaminants in both wells. |
Former Staff |
| 2/19/1991 |
Release Investigation |
SI; Shannon & Wilson phase III assessment:gradient of potentiometric surface 1% & dip of gradient to W-NW, TPH in borings ranged from 25ppm to 43ppm, BTEX in soils non detect as was halogenated volatile organics. .0003 ppm benzene was detected in upgradient well & downgradient well .0008ppm benzene was detected. |
Former Staff |
| 6/3/1991 |
Long Term Monitoring Established |
MS; Shannon & Wilson sent in report of groundwater sampling at site. Upper limits of aromatic volatile organics were found in the NE corner of the project site B11MWW1 71.94 ppm total BTEX (25.2 ppm benzene, 34 ppm toluene, 2.91 ppm of ethylbenzene, 9.83 ppm xylene). Methylene chloride was found in sample B9MWW2 at .198 ppm. |
Former Staff |
| 9/13/1991 |
Leaking Underground Storage Tank Corrective Action Underway |
CAPR; On September 13, 1991 Mapco submitted a corrective action plan calling for soil vapor extraction and ground water pump and treat if necessary. The department responded, on October 10, with a request for more details. A response was requested by Novbember 8, 1991. On November 16, Shannon and Wilson submitted additional details as requested. On December 5, 1991 the department approved the corrective action plan. |
Former Staff |
| 8/30/1994 |
Leaking Underground Storage Tank Corrective Action Underway |
LCAR; |
Former Staff |
| 10/23/1994 |
Leaking Underground Storage Tank Corrective Action Underway |
LCAR; Performed a Corrective Action Report review. |
Former Staff |
| 11/21/1994 |
Leaking Underground Storage Tank Corrective Action Underway |
LCAR; Review monitoring well report. |
Former Staff |
| 3/18/1995 |
Leaking Underground Storage Tank Corrective Action Underway |
LCAR; Reviewed quarterly reports. |
Former Staff |
| 7/25/1995 |
Update or Other Action |
CAPR; Met with RP to discuss status of site. |
Former Staff |
| 8/15/1995 |
Leaking Underground Storage Tank Corrective Action Underway |
LCAR; Reviewed quarterly monitor well report required by COBC. |
Former Staff |
| 9/15/1995 |
Update or Other Action |
CAPR; Reviewed files. |
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 |
| 9/17/2001 |
Update or Other Action |
Changed ADEC Project Manager from Bush to Wiegers |
Cynthia Pring-Ham |
| 10/31/2002 |
Update or Other Action |
Fall monitoring report submitted. Samples were collected from 4 wells. B4MW contained the only detectable BTEX levels (1.4 ppm benzene). System recovery from March to September was approximately 17 lbs according to the analytical results and 450 lbs. using the FID values. 1,2-DCA concentrations have increased since Feb, 1996. GRO will be added to sampling program. |
Janice Wiegers |
| 3/11/2003 |
Update or Other Action |
Per J.Wiegers, change file number from L30.14 to 2100.26.027 |
Wendy Uzzell |
| 6/10/2003 |
Document, Report, or Work plan Review - other |
Spring remediation and monitoring report submitted. An estimate 124 lbs of gasoline was recovered based on analytical results. The maximum benzene concentration was detected in B4MW at 350 ppb. Halogenated volatile organics have increased in this well to 149 ppb. Increase may be related to increasing groundwater levels. Benzene impact to indoor air in downgradient housed was modeled and it was determined that this pathway was low risk. |
Janice Wiegers |
| 10/7/2003 |
Document, Report, or Work plan Review - other |
Indoor air quality assessment submitted. Based on screening with the EPA Johnson & Ettinger model, current groundwater contaminant levels are acceptable with respect to potential migration to indoor air. A benzene concentration of 1.15 ppm has been established as a trigger for possible further action. |
Janice Wiegers |
| 11/14/2003 |
Document, Report, or Work plan Review - other |
Remediation and groundwater monitoring report submitted. B4MW contained 810 ppb benzene and 14 ppm GRO. Concentrations in this well are being monitored as an indicator of potential vapor intrusion as addressed in the Indoor Air Quality Assessment. No halogenated organics were observed during this monitoring event. Vapor recovery increases have been noted in the west and south extraction lines. |
Janice Wiegers |
| 6/17/2004 |
Update or Other Action |
File review to approve cost recovery invoice. |
Lynne Bush |
| 9/7/2004 |
Leaking Underground Storage Tank Corrective Action Underway |
On 07 July 2004, Bush met with Holiday representative Bruce Anthony; Williams Express representative Terrie Blackburn; and Shannon & Wilson representatives Matt Hemry, Ben Heaver, and Tim Terry. The topic of discussions was plans for future activities at all former Williams Express Stations. |
Lynne Bush |
| 9/8/2004 |
Leaking Underground Storage Tank Corrective Action Underway |
Holiday will be assuming responsibility for investigative and remediation activities at all former Williams Express Stores, but legal responsibility is divided by store. Holiday has renumbered their stores as: 5001=601; 5002=602; 5005=605; 5005=605; 5006=606; 5007=607; 5008=608; 5010=610; 5014=614; 5016=616; 5018=618; 5024=624; 5025=625; 5030=630; 5031=631; 5050=650.
While Holiday will oversee the work at the former Williams’ stations, these sites remain the responsibility of Williams. The numbers of these sites remain the same: 5003; 5004; 5009; 5012; 5015; 5017; 5021; and 5034. |
Lynne Bush |
| 5/9/2006 |
Update or Other Action |
Project management transferred from Bush to O'Connell. |
Aggie Blandford |
| 5/12/2006 |
Document, Report, or Work plan Review - other |
Received April to December 2005 monitoring report. Electrical problems addressed and VES system working on pulse schedule. Benzene exceeded Table C in well B4MW in March 2005, no exceedances in October 2005. |
Bill O'Connell |
| 3/16/2007 |
Exposure Tracking Model Ranking |
|
Bill O'Connell |
| 6/18/2007 |
Document, Report, or Work plan Review - other |
Received 2006 monitoring report. QA/QC conducted. Benzene detected above Table C in B4MW during one 2006 monitoring event at 0.341 mg/l. Rebound test underway since October 2006. |
Bill O'Connell |
| 7/17/2008 |
Document, Report, or Work plan Review - other |
Receipt of 2007 report electronically. Review included laboratory review checklist. Only constituent above Table C is benzene in B4MW in the spring and not in the fall events. S&W reports that the VES will operate in pulse mode for 6 months and following June 2008 performance will be evaluated. Depending on results from early 2008, a conditional closure may be requested. |
Keather McLoone |
| 4/6/2009 |
Update or Other Action |
Receipt via email on this date of Petition for Determination of Cleanup Complete - Institutional Controls dated March 4, 2009. |
Keather McLoone |
| 5/8/2009 |
Update or Other Action |
telephone conversation with S&W to confirm that although a rebound test was intended for the VES it technically did not occur. The system was reportedly shutdown for the rebound test and inadvertently turned back on later the same day by the maintainence contractor. Later hydrocarbon recoveries supposed to have justified shutting down the system without later vapor sampling according to 2008 report. |
Keather McLoone |
| 5/14/2009 |
Update or Other Action |
Received laboratory data for groundwater sample collected on May 5, 2009. Water depth was reported via 5/21/09 email as "32.26 feet below the top of casing (as expected for the spring at this site)". No laboratory review checklist or data table provided, however DEC review of data package found no quality issues that would impact data. Following receipt of this information and the 2008 report, the Cleanup Complete with ICs decision that was petitioned for can be made with the adequate amount of information. |
Keather McLoone |
| 6/1/2009 |
Document, Report, or Work plan Review - other |
Review of 2008 Remediation System and April Groundwater Monitoring report submitted May 28, 2009 electronically. VES was operated on a pulse schedule until October 2008 when it was shutdown due to decreased hydrocarbon recovery. Last vapor analytical sample collected was on August 2008. A groundwater event was conducted on April 23, 2008 - one well, B4MW, sampled. Review included laboratory review checklist. |
Keather McLoone |
| 6/4/2009 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 77660 Former USTs/dispensers. |
Keather McLoone |
| 6/25/2009 |
Institutional Control Record Established |
Notice of remaining contamination- Soil contaminated with benzene and GRO above the ADEC Tables B1 and B2 cleanup levels remained in the former tank excavations. |
Keather McLoone |
| 6/25/2009 |
Cleanup Complete Determination Issued |
The ADEC has determined there is no unacceptable risk to human health or the environment, and this site will be granted a Corrective Action Complete- ICs determination subject to the following.
1. Any future change in land use may impact the exposure assumptions cited in this document. If land use and/or ownership changes, current ICs may not be protective and ADEC may require additional remediation and/or ICs. Therefore the Holiday Companies shall report to ADEC every five years to document land use, or report as soon as Holiday Companies becomes aware of any change in land ownership and/or use, if earlier. The report can be sent to the local ADEC office or electronically to DEC.ICUnit@alaska.gov.
2. Installation of groundwater wells will require approval from ADEC in accordance with 18 AAC 75.350(2).
3. Monitoring wells (MWs) must be decommissioned in accordance with ADEC guidance.
4. Any proposal to transport soil or groundwater off site requires ADEC approval in accordance with 18 AAC 78.600(h). A “site” [as defined by 18 AAC 75.990 (115)] means an area that is contaminated, including areas contaminated by the migration of hazardous substances from a source area, regardless of property ownership. (See attached site figure and Notice of Environmental Contamination)
5. Movement or use of contaminated material in a manner that results in a violation of 18 AAC 70 water quality standards is prohibited.
|
Keather McLoone |
| 8/20/2009 |
Update or Other Action |
DEC has not received a Corrective Action Complete-ICs Agreement and Signature Page from Holiday Alaska, Inc. within the 30 days of receipt of letter requested. A letter was sent to Holiday Alaska, Inc. on this date restating the conditions of the Corrective Action Complete with ICs decision with the addition of the condition of "A Notice of Environmental Contamination must be recorded and will be attached to the ADEC database to document that there is residual contamination remaining onsite above most stringent ADEC cleanup levels.". Another signature page was included along with the NEC. |
Keather McLoone |
| 9/2/2009 |
Update or Other Action |
DEC received a Corrective Action Complete-ICs Agreement and Signature Page on this date. |
Keather McLoone |
| 9/16/2009 |
Document, Report, or Work plan Review - other |
Work Plan for Remediation System Decommissioning and Well Decommissioning received on this date. The remediation system componenet will be removed from the site. The remediation shed will remain at the site for storage at the request of the store manager. VES wells B-11/MW and B-12/MW will be decommissioned in the same manner as the monitoring wells. Monitoring wells B4MW, B5MW, B6MW, and B9MW will be decommissioned in accordance with the work plan for monitoring well decommissioning at Holiday and/or Williams Stores dated May 29, 2009 and approved by ADEC on June 5, 2009. |
Keather McLoone |
| 1/11/2010 |
Document, Report, or Work plan Review - other |
Date of receipt of Well and Remediation System Decommissioning report. Four groundwater monitoring wells and two vapor extraction system (VES) wells were decommissioned, subsurface remediation system piping was capped, and the aboveground components of the VES were removed with the exception of the shed which remains on the site for reuse. This work was to be performed according to the Work Plan for Remediation System Decommissioning and Well Decommissioning at Holiday Station Store 614, dated September 14, 2009 and approved on September 17, 2009. The work plan stated that the subsurface pipes would also be filled with concrete and/or hydrated bentonite as well as being capped. ADEC requests written justification for this unapproved deviation from the work plan. |
Keather McLoone |
| 4/6/2010 |
Update or Other Action |
Date of receipt of hardcopy of May 2009 Groundwater Monitoring report. This data was received via email in May 2009 prior to writing the CC with ICs decision. |
Keather McLoone |
| 12/1/2011 |
Update or Other Action |
The current project manager chose to retain management of this site with the Cleanup Complete Determination that has Institutional Controls. |
Kristin Thompson |
| 4/20/2012 |
Update or Other Action |
Date of receipt of letter from S&W on behalf of Holiday requesting Removal from Compliance Order by Consent for this site. |
Keather McLoone |
| 7/24/2012 |
Update or Other Action |
Issued a letter to remove Holiday Station Store #614 from the 1991 Compliance Order By Consent (COBC), after its verbiage was reviewed by DOL (Breck Tostevin). |
Richard Bernhardt |
| 6/6/2013 |
Long Term Monitoring Complete |
Administrative action added during a quality control check.
|
Kristin Thompson |
| 5/7/2015 |
Institutional Control Update |
On this date, an IC reminder letter was issued to the responsible party for this site (Hazard ID 23822), in conjunction with Hazard ID 23022. The staff assigned has been changed to IC Unit. |
Kristin Thompson |
| 6/18/2018 |
Institutional Control Compliance Review |
IC compliance review conducted. Closure/IC Details updated. |
Kristin Thompson |
