| Action Date |
Action |
Description |
DEC Staff |
| 9/3/1987 |
Site Visit |
FI; Hart Crowser drills and samples (5) borings on-site. Soil contamination encountered. Portions of report received by ADEC on 8/2/89. |
Former Staff |
| 6/27/1988 |
Leaking Underground Storage Tank Corrective Action Underway |
RAPR; Hart Crowser work plan for removing on-site underground storage tanks. ADEC gave verbal approval on 6/27. Work scheduled to begin on 6/29/88. |
Former Staff |
| 6/29/1988 |
Update or Other Action |
REM; Hart Crowser summarizes underground tank removal in report dated 8/88; ADEC received report 1/4/89. B-C Excavating performs site earthwork and tank removal. Free product occurring as a discontinuous sheen on the exposed groundwater surface. Approximately 800 cubic yards of contaminated soil removed, based on 1,159 tons processed at Anchorage Sand & Gravel in 10/89. Sample from east side, north wall of excavation on 7/7/88, had 921 ppm TPH. Seven soil samples taken from the excavation had less than 20 ppm TPH. |
Former Staff |
| 7/1/1988 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 76351 ADD; |
Former Staff |
| 7/1/1988 |
Site Added to Database |
|
Former Staff |
| 7/2/1988 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
LCAU; :LCAU Date changed DB conversion |
Former Staff |
| 7/14/1988 |
Update or Other Action |
REM; Contaminated soil moved to temporary Port of Anchorage site. Approved for processing at AS&G by ADEC on 8/24/89. Processed by AS&G from 10/23/89 through 10/25/89. |
Former Staff |
| 10/31/1988 |
Release Investigation |
SI; Final report for Phase II Task A. Installation and sampling of four on-site monitoring wells. |
Former Staff |
| 11/3/1988 |
Leaking Underground Storage Tank Corrective Action Underway |
RAPR; Hart Crowser submits site assessment plan as requested by ADEC. ADEC did not have an opportunity to review the plan prior to it's implementation. |
Former Staff |
| 1/1/1989 |
Underground Storage Tank Site Characterization or Assessment |
PA; Hart Crowser completes a water well survey within 1/2 mile radius. Seven active water wells in the area. Three wells downgradient of contamination plume. |
Former Staff |
| 11/8/1989 |
Release Investigation |
SI; Hart Crowser site investigation concerning delineation of off-site groundwater contamination. The plume of contamination is about 300 feet long, 100 ft. wide and extends SW of the site in the direction of groundwater flow. Sample MW-4, taken on 11/13/89, had 0.519 ppm benzene. No free product observed in the eight monitoring wells at the site. Groundwater is about 13 feet below the surface. Quarterly monitoring recommended by Hart Crowser. |
Former Staff |
| 4/25/1990 |
Long Term Monitoring Established |
MS; Sampling of (8) site monitoring wells; Plume has reached west side of Minnesota Drive; groundwater flow towards the SW. The plume appears to have originated at the former UST array area. Sample MW-4 taken on 4/25/90 had 0.329 ppm benzene. Sample MW-7 taken on 4/25/90 had .0068 ppm benzene. |
Former Staff |
| 4/30/1990 |
Leaking Underground Storage Tank Corrective Action Underway |
RAPR; Hart Crowser submits work plan for quarterly sampling at Store #5015. Approved by ADEC 5/4/90. |
Former Staff |
| 7/11/1990 |
Long Term Monitoring Established |
MS; Hart Crowser submits quarterly monitoring results. Groundwater flow towards the southwest. Sample MW-4 taken on 7/11/90 had 0.412 ppm benzene. Sample MW-7 taken on 7/11/90 had 0.0074 ppm benzene. |
Former Staff |
| 1/9/1991 |
Long Term Monitoring Established |
MS; Hartcrowser sent in Jan.91 quarterly water sampling results. Water elevation declined .15' from 12/90 measurements. Inferred groundwater flow is to the SW. At present time total BTEX plume appears to have reached a steady state configuration. Halogenated volatile organics were detected in MW-3,4,7. |
Former Staff |
| 7/6/1991 |
Long Term Monitoring Established |
MS; Hart Crowser sent in sampling results to DEC from June 91 quarterly effort. Off site well MW-7 to the west of the site had a total BTEX of .014 mg/L which was higher than previous sampling events. MW-7 was highest in halogenated volatile organics at .018 mg/L for 1,2-dichloroethane |
Former Staff |
| 1/22/1992 |
Long Term Monitoring Established |
MS; Mapco submittyed quarterly monitoring report. Quarterly monitoring continues. Ground water contamination appears to be stable. On May 5, 1992, ADEC and Mapco discussed the need to conduct either a risk assessment or move towards ground water treatment in order to avoid indefinate monitoring of the site. |
Former Staff |
| 10/23/1994 |
Leaking Underground Storage Tank Corrective Action Underway |
LCAR; Performed a Corrective Action Report review. |
Former Staff |
| 11/22/1994 |
Leaking Underground Storage Tank Corrective Action Underway |
LCAR; Review monitoring well report. |
Former Staff |
| 7/25/1995 |
Update or Other Action |
MEET; Met with RP to discuss status of site. (action code was CAPR) |
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 |
Former Staff |
| 9/17/2001 |
Update or Other Action |
Changed ADEC Project Manager from Bush to Wiegers |
Cynthia Pring-Ham |
| 11/21/2002 |
Update or Other Action |
Fall monitoring report submitted. Benzene detected on-site in MW-4 at 91 ppb and off-site in MW-7 at 7 ppb. |
Janice Wiegers |
| 3/11/2003 |
Update or Other Action |
Per J.Wiegers, change file number from L30.15 to 2100.26.028 |
Wendy Uzzell |
| 11/14/2003 |
Document, Report, or Work plan Review - other |
Groundwater monitoring report submitted. The maximum benzene concentration was found in MW-4 (11 ppb). |
Janice Wiegers |
| 3/19/2004 |
Document, Report, or Work plan Review - other |
Workplan for lead scavenger sampling approved. EDB will be analyzed with EPA method 8260. Further evaluation with a method with a lower detection limit may be conducted in future sampling events. |
Janice Wiegers |
| 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 |
| 11/1/2005 |
Update or Other Action |
Approved request to transport contaminated development water to Emerald for treatment. |
Lynne Bush |
| 5/15/2006 |
Update or Other Action |
Project manager changed from Bush to O'Connell |
Bill O'Connell |
| 5/15/2006 |
Document, Report, or Work plan Review - other |
Received October 2005 monitoring report. Benzene above Table C detected in MW-4 and MW-7 however concentrations are stable/decreasing. |
Bill O'Connell |
| 5/24/2006 |
Update or Other Action |
Received Petition for Conditional Closure from S&W. |
Bill O'Connell |
| 6/9/2006 |
Conditional Closure Approved |
Based on the information provided to date, ADEC has determined that the former Williams Express Site (WES) #5015 shall be conditionally closed since the hazardous substance contamination has been adequately addressed and does not pose an unacceptable risk to human health or the environment. |
Bill O'Connell |
| 6/9/2006 |
Institutional Control Record Established |
ADEC has determined that the cleanup actions employed at WES #5015 were effective in removing a majority of the contaminant source material and a conditional closure is appropriate for the site. Based on the information provided to date, it has been determined that the contaminant concentrations remaining on site do not pose an unacceptable risk to human health or the environment and no further remedial action is required.
This determination is subject to the following conditions:
1. A deed notice (Notice of Environmental Contamination) shall be recorded in the State Recorder’s Office that identifies the nature and extent of contamination at the property and any conditions that the owners and operators are subject to in accordance with this decision document. A copy of the recorded notice shall be provided to ADEC within thirty (30) days of its recordation
2. An institutional control will be recorded on the ADEC database that identifies the nature and extent of the contamination remaining on the site.
3. ADEC shall be notified prior to off site transport of soil or groundwater in accordance with 18 AAC 78.274(b).
4. Annual groundwater monitoring shall be required in accordance with an ADEC approved monitoring plan. Monitoring wells MW-3, MW-4, MW-7, and MW-9 will be sampled for benzene, toluene, ethylbenzene, and xylenes.
5. Monitoring well MW-5 and any other unnecessary groundwater monitoring wells shall be decommissioned in accordance with accepted practices.
6. Groundwater wells will not be installed on this property without prior approval from ADEC. |
Bill O'Connell |
| 6/9/2006 |
Institutional Control Record Established |
Notice of remaining contamination- Soil contaminated with benzene above the ADEC Table B1 cleanup level remains in the former tank excavation along the northeast side near Northern Lights Blvd. Soil was left in place after excavation encountered buried utilities. Benzene in groundwater above Table C remains at MW-4 located south of the former tank excavation. |
Bill O'Connell |
| 6/5/2007 |
Document, Report, or Work plan Review - other |
Received report for 2006 annual monitoring. Benzene above Table C in MW-4 and MW-7. QA/QC conducted. Site is conditionally closed and will be monitored again in 2007. |
Bill O'Connell |
| 9/18/2007 |
Update or Other Action |
The groundwater monitoring requirement that was part of the Conditional Closure for this site has been removed. Amendment includes decommissioning of MW-3, MW-4, MW-7, and MW-9. |
Bill O'Connell |
| 4/29/2008 |
Update or Other Action |
Notice of Environmental Contamination received as recorded and signed by Williams. |
Keather McLoone |
| 10/2/2008 |
Site Visit |
Site visit to observe well decommissioning practices. MW-7 decommissioned as requested by previous PM. |
Keather McLoone |
| 11/20/2008 |
Update or Other Action |
Receipt and review of Monitoring Well Decommissioning Report. Five wells - MW3, MW4, MW5, MW9 and MW7 were decommissioned. |
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 |
| 6/11/2012 |
Update or Other Action |
Made first attempt to contact Walgreens regarding construction/development activities at this location, which was formerly a Johnson Tire Service Store (CC in 1998). The new address is 2839 Minnesota Drive and includes the former properties from the adjacent strip mall. Twenty supersacks of material were observed at this location and CSP had not been contacted about plans to move soil. The excavated material was later determined to be associated with the former Johnson Tire Service facility and approval was obtained from Bill O’Connell to transport and dispose. |
Keather McLoone |
| 6/6/2013 |
Long Term Monitoring Complete |
Administrative action added during a quality control check.
|
Kristin Thompson |
| 12/1/2015 |
Institutional Control Compliance Review |
IC compliance review conducted, staff name changed from Nuechterlein to IC Unit, and reminder system set to send an IC reminder letter. |
Evonne Reese |
| 12/8/2015 |
Institutional Control Update |
An IC reminder letter was sent to the responsible party on this date. |
Nathan Maxwell |
| 1/12/2016 |
Institutional Control Update |
The current landowner information was updated in the Affiliates details. Schedule to resend IC reminder letter to the current property owner. |
Evonne Reese |
| 2/23/2016 |
Institutional Control Update |
IC reminder letter was returned. Reissuing the letter on this date. |
Nathan Maxwell |
| 3/23/2017 |
Institutional Control Compliance Review |
IC compliance review conducted. Closure/IC Details updated. Reminder system set to follow-up every three years. |
Kristin Thompson |
| 5/7/2019 |
Institutional Control Update |
An Institutional Controls reminder letter e-mailed to the responsible party on this date. |
Mossy Mead |
| 6/11/2024 |
Institutional Control Compliance Review |
IC compliance review completed on this date. An IC reminder letter was e-mailed to the landowner. The next review will be in three years’ time. |
Gaige Robinson |
