| Action Date |
Action |
Description |
DEC Staff |
| 2/8/2008 |
Site Added to Database |
Site added to the database. |
Mitzi Read |
| 2/13/2008 |
Potentially Responsible Party/State Interest Letter |
DEC staff issued a letter to Mr. and Ms. Woodland notifying them of their potential responsible party status. DEC requested that they respond to this letter by March 28, 2008. In addition, DEC requested that Mr. and Ms. Woodland hire a qualified person to develop a site investigation work plan for DEC review. The deadline for submittal of the work plan is May 30, 2008. |
Todd Blessing |
| 2/13/2008 |
Exposure Tracking Model Ranking |
Initial ranking. |
Todd Blessing |
| 2/29/2008 |
Update or Other Action |
DEC recieved a letter from Max Garner, counsel for Bill and Judy Woodland. Mr. Garner requested an informal conference to discuss his clients contention that the Snow White Cleaners Facility should be closed without further investigation. |
Todd Blessing |
| 3/7/2008 |
Update or Other Action |
DEC issued a letter to Mr. Garner responding to his February 29, 2008 letter. DEC requested a meeting in order to alleviate the exchange of letters between parties. |
Todd Blessing |
| 3/10/2008 |
Update or Other Action |
DEC staff met Max Garner and Bill Woodland to discuss the status of the Snow White Cleaners Facility. DEC agreed to remove Lots 324 and 336 from the CS database, and to withdraw its request for a site investigation. However, DEC disagreed with Mr. Garner that the Snow White Cleaners Facility should be removed from the contaminated sites database. |
Todd Blessing |
| 3/21/2008 |
Update or Other Action |
DEC recieved a letter authored by Max Garner and dated March 21, 2008. Mr. Garner requested an informal conference with DEC to discuss the removal of the Snow White Cleaners site from the contaminated sites database. |
Todd Blessing |
| 4/1/2008 |
Update or Other Action |
DEC issued a letter responding to Mr. Garner. DEC stated that listing the site on the Department’s contaminated site database is not a final agency action subject to appeal to Superior Court or a basis for a request for an adjudicatory hearing under 18 AAC 75.385. The Department, however, is willing to agree that any deadline for Snow White to appeal the Department’s listing of the property on the contaminated site database (assuming that such an appeal right exists) be tolled for a period of 60 days from the date of your March 20, 2008 letter while the parties communicated in an effort to reach an amicable resolution. |
Todd Blessing |
| 11/23/2011 |
Update or Other Action |
DEC recieved a preliminary assemement (PA) report from EPA region 10 regarding the status of this site under the Superfund Program. EPA's contractor, Ecology and Environment, conducted the PA and scored the site with their Hazard Ranking System (HRS). EPA informed the site owners and DEC that the HRS score was not sufficient enough to merit inclusion of this site in the Superfund Program. |
Todd Blessing |
| 10/2/2013 |
Update or Other Action |
Project manager name was changed from Todd Blessing to Bill O'Connell. |
Evonne Reese |
| 2/2/2015 |
Update or Other Action |
On this date, the sub slab depressurization system at 555 Cordova Street, an office building adjacent to Alaska Cleaners, was activated. Previous indoor air samples collected in 2013 and 2014 indicated PCE levels in vapor in the 555 Cordova building exceeded vapor intrusion screening levels, necessitating the installation of the system. A soil sample collected from soil removed below the concrete slab contained PCE at 0.463 mg/kg. |
Bill O'Connell |
| 2/6/2015 |
Document, Report, or Work plan Review - other |
Reviewed Indoor Air Sampling Results report for Alaska Cleaners, 300 East 5th Avenue. Six 6-liter summa canisters were used to collect 24-hour air samples from various locations spaced evenly throughout the inside the building. Numerous compounds were detected including PCE, which was detected up to 76 ug/m3, however none of the detections exceeded ADEC vapor intrusion screening levels. Sample 006 had a final pressure reading of 0, therefore this sample is not considered representative. |
Bill O'Connell |
| 3/5/2015 |
Update or Other Action |
Site status changed to unconfirmed. This site was added to the CS database in 2008 in the absence of any new information related to releases of hazardous substances at this site. Soil contamination noted during investigations conducted in 1992 was addressed by the 1993 closure of the site known as Snow White Cleaners with file #2100.26.469. |
Bill O'Connell |
| 1/6/2016 |
Meeting or Teleconference Held |
Meeting today with Anchorage Water and Wastewater Utility to discuss condition of sewer line located on Block 20 alley |
Bill O'Connell |
| 5/18/2016 |
Document, Report, or Work plan Review - other |
Reviewed work plan for soil gas investigation, East Addition Subdivision, Block 20. Passive soil gas samplers will be deployed at 14 locations near the intersection of 5th Ave and Cordova St to evaluate the extent of soil gas impacts and provide information to support future investigation in the area. |
Bill O'Connell |
| 9/19/2016 |
Document, Report, or Work plan Review - other |
Reviewed Report for East Addition Block 20 Alley Soil Gas Investigation. Passive soil gas samplers were deployed at 14 locations in the vicinity of Cordova St and 5th Ave in Anchorage. PCE was detected in 10 of the samples ranging from 0.03 ug/m3 to 4.24 ug/m3. The highest concentration was detected along the south side of Cordova St near Office Depot. None of the detected concentrations exceeded ADEC screening levels for the vapor intrusion pathway. |
Bill O'Connell |
| 6/12/2017 |
Document, Report, or Work plan Review - other |
Reviewed Indoor Air Sampling Report for 555 Cordova. Passive samplers were deployed in the basement and on floors 1-5. None of the samples exceeded the target level of 41 ug/m3 for PCE, except one sample in the basement that contained PCE at 330 ug/m3. The system was apparently operating at reduced efficiency immediately preceding the sampling effort and once the system was optimized, follow up samples from the same area contained PCE at 5.2 ug/m3 |
Bill O'Connell |
| 2/25/2019 |
Document, Report, or Work plan Review - other |
Reviewed 2019 Subslab Depressurization System Inspection and Analysis Report for 555 Cordova Street. The system inspection indicates the system is operating as designed and no adverse impacts to the system or the slab from the 2018 earthquake were observed. A sample from the system influent contained PCE at 17,000 ug/m3, which the lowest measured concentration to date since the system began operating in 2015. System monitoring will continue on a weekly basis and the next sampling is scheduled for 2020. |
Bill O'Connell |
| 8/2/2019 |
Document, Report, or Work plan Review - other |
Indoor air samples were collected from 5 locations in the basement of 555 Cordova St in February 2019. PCE was not detected in samples from two locations. PCE concentrations in the other three samples ranged from 1.3 to 1.6 ug/m3, below the ATSDR minimum risk level/DEC residential screening level of 41 ug/m3. |
Bill O'Connell |
| 10/9/2019 |
Update or Other Action |
Approval to transport provided for 48 cubic yards of PCE contaminated soil generated during utility work in the Block 20 alley. The utility work, conducted by Anchorage Water and Wastewater, replaced the broken service line from Alaska Cleaners to the water main with a manhole for the purposes of future sample collection by AWWU. Additional lengths of the water main were slip-lined as part of the project as well. PCE was detected up to 0.378 mg/kg. |
Bill O'Connell |
| 11/26/2019 |
Update or Other Action |
Site status changed to Active. |
Bill O'Connell |
| 11/27/2019 |
Document, Report, or Work plan Review - other |
Contaminated Soil Management Plan approved for Block 20 utility work. Approval was issued on 1/28/2019 |
Bill O'Connell |
| 2/7/2020 |
Potentially Responsible Party/State Interest Letter |
PRP letters sent to Alaska Cleaners, Bob Acree (555 Cordova Street), and the Municipality of Anchorage. The letters identified site characterization under 18 AAC 75.335 to determine the nature and extent of contamination as the next step in the cleanup process and requested PRPs respond by February 20, 2020 to provide availability for a meeting to discuss plans for investigation and cleanup of the site. |
Wendy Hansen |
| 4/2/2020 |
Update or Other Action |
PRPs were notified via email that the meeting requested in PRP notifications sent on February 6, 2020 was postponed for the time being due to concerns over the impacts of COVID-19, and parties will be contacted at a later date to re-schedule. |
Wendy Hansen |
| 4/28/2020 |
Long Term Monitoring Workplan or Report Review |
Review of Cordova VI System Report received on 4/13/2020. The system is operating as designed, the influent PCE concentration reported at 10,000 ug/m3. The 2020 report includes information indicating the influent concentration in 2017 was 130,000 ug/m3, which was not included in the 2017 report. |
Wendy Hansen |
| 6/1/2021 |
Document, Report, or Work plan Review - other |
Reviewed 2021 Subslab Depressurization and Analysis Report. The system is reported to be functioning as designed; the influent PCE concentrations were measured at 9,000 ug/m3, a continued decline from the startup concentration. |
Bill O'Connell |
| 6/15/2021 |
Enforcement Action |
Notice of violation issued 6/14/21 for failure to conduct site characterization as required in 18 AAC 75.335 |
Bill O'Connell |
| 6/7/2023 |
Document, Report, or Work plan Review - other |
Reviewed 2022 Subslab Depressurization and Analysis Report. The system is reported to be functioning as designed; the influent PCE concentrations were measured at 8,700 ug/m3, a continued decline from the startup concentration. |
Bill O'Connell |
| 7/6/2023 |
Document, Report, or Work plan Review - other |
Reviewed 2023 Subslab Depressurization and Analysis Report. The system is reported to be functioning as designed; the influent PCE concentrations were measured at 9,200 ug/m3. The influent results from the last several years have remained relatively stable, the 2023 report suggest a shutdown test may be appropriate to evaluate if indoor air is still above the target level with the reduction in subslab concentrations since system startup. |
Bill O'Connell |
| 5/30/2024 |
Document, Report, or Work plan Review - other |
Shut down test work plan approved for 555 Cordova St. |
Bill O'Connell |
| 9/30/2024 |
Document, Report, or Work plan Review - other |
In accordance with the Shut Down Test work plan, indoor air samples were collected in the basement and most occupied floors of the 555 Cordova Building in June 2024, following a two week shutdown period, and again in August 2024 following a six week shutdown period. In June, PCE was not detected in the basement rooms or occupied floors, except in one sample from the basement stairwell, where PCE was detected at 4.0 ug/m3, below the residential target level of 41 ug/m3. A system influent sample contained PCE at 8,100 ug/m3. In August, PCE was again not detected in the basement rooms or occupied floors except in the basement stairwell where PCE was detected at 1.9 ug/m3. A system influent sample from September 2024 contained PCE at 7,700 ug/m3, the lowest concentration to date. The influent samples are representative of sub slab conditions and continue to exceed the sub slab target level of 1,800 ug/m3, but vapors do not seem to be entering the building at concentrations above the target level. Another sampling event is planned for February 2025. |
Bill O'Connell |
| 6/10/2025 |
Document, Report, or Work plan Review - other |
Results from indoor air samples from February 2025 were consistent with previous sampling events. DEC approved permanent shut down on the subslab depressurization system in June 2025. |
Bill O'Connell |
