| Action Date |
Action |
Description |
DEC Staff |
| 11/3/1992 |
Site Added to Database |
|
Robert Weimer |
| 11/3/1992 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 76649 On 9/9-10/92 two 2,000 gallon diesel and one 2,000 gallon unleaded gas tanks were removed. 50 cubic yards of contaminated soil was stockpiled on site. Additional contamination (20,000 ppm DRO/668 ppm GRO) remains in excavation. F.K.A. L55.139. |
Robert Weimer |
| 11/4/1992 |
Update or Other Action |
Notice of Release letter sent certified mail, return receipt requested. |
Robert Weimer |
| 11/4/1992 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
LUST Corrective Action Underway. Date changed DB conversion. |
Robert Weimer |
| 12/4/1992 |
Underground Storage Tank Site Characterization or Assessment |
Reviewed the Utti & Associates "Site Assessment Report and Release Investigation Report for Gasoline and Diesel Underground Storage Tank Removal" dated 12/4/92, received by the department 12/11/92. One gasoline tank, two diesel tanks removed, piping from dispenser to tanks still in place, hydro test of line in question. Excavation still hot (up to 20,000 ppm DRO), under gasoline tank not sampled for BTEX. 55 cubic yards contaminated soil stockpiled on site. |
Lynne Bush |
| 1/21/1994 |
Update or Other Action |
The department received a copy of the Dames & Moore report "Underground Storage Tank Site Assessment and Release Investigation" dated 11/10/93 and a copy of the "UST Site Assessment and Release Investigation" work plan dated 1/17/94. |
Bill Petrik |
| 4/8/1994 |
Release Investigation |
Reviewed the Dames & Moore "Underground Storage Tank Site Assessment and Release Investigation Report" for this site dated 1/17/94 and received by ADEC 1/21/94. Included with the report was a letter outlining future plans for the facility cleanup. Several comments and concerns were identified in a letter sent this date after review of the subject report for this site.
These include resolution of the Cleanup Matrix Score due to two different soil type values given from two different consultants. What were the results of line tests done on piping left in the ground? Were the lines capped when cut from the system? Are there nearby potential well receptors? Has ground water flow direction been established? Is the stockpile currently stored at this facility on a long-term liner and covered as described in regulations? If not, it must be stored correctly immediately. What plans are there to address ground water contamination other than long-term monitoring?
The plans outlined in the Dames & Moore letter are acceptable to the department with noted conditions and questions. However, additional work may be required based upon the information gathered during the continued excavation of contaminated soil. Ground water contamination is not addressed in the letter and it may be necessary to do so in the future. |
Lynne Bush |
| 4/22/1994 |
Document, Report, or Work plan Review - other |
Received a letter this date from Dames & Moore dated 4/20/94 in response to the letter sent by the program on 4/8/94 addressing the questions outlined in the letter sent. |
Lynne Bush |
| 7/15/1994 |
Document, Report, or Work plan Review - other |
Release Investigation Report Review. |
Lynne Bush |
| 8/16/1994 |
Long Term Monitoring Established |
First round of quarterly sampling of MWs 1 through 4 began this date. |
Bill Petrik |
| 12/20/1994 |
Update or Other Action |
The department received a copy of the Dames & Moore "Report: Corrective Action & Release Investigation of USTs; Former ALPAC Corporation Facility; 521 East 104th Avenue; Anchorage, Alaska; Facility I.D. # 1367" dated 12/1/94. |
Bill Petrik |
| 1/25/1995 |
Update or Other Action |
Initial round of biannual sampling of MWs 1, 3, and 4 conducted this date. |
Bill Petrik |
| 7/6/1995 |
Update or Other Action |
Received a copy of the Dames & Moore "Additional Groundwater Sampling" work plan dated 7/3/95. |
Lynne Bush |
| 1/4/1996 |
Update or Other Action |
The department received a copy of the Dames & Moore "Report: Biannual Groundwater Monitoring, 1995; Former ALPAC Corporation Facility; 521 East 104th Avenue; Anchorage, Alaska; Facility I.D. # 1367" dated 12/5/95. |
Bill Petrik |
| 8/13/1996 |
Leaking Underground Storage Tank Corrective Action Underway |
Reviewed a copy of the Dames & Moore "Report: Corrective Action & Release Investigation of USTs; Former ALPAC Corporation Facility; 521 East 104th Avenue; Anchorage, Alaska; Facility I.D. # 1367" dated 12/1/94, received by the department 12/20/94, and sent a letter out this date with comments on work to date and recommendations. It will be necessary to continue monitoring until contaminant levels drop below established water quality standards. Action added by Petrik. |
Lynne Bush |
| 11/20/1997 |
Update or Other Action |
ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: Pepsi Cola Bottling Company of Alaska, Inc. |
Lynne Bush |
| 5/31/2002 |
Update or Other Action |
Site transferred to DEC staff Amanda Dreyer. |
Lynne Bush |
| 7/24/2002 |
Update or Other Action |
Sent a letter requesting the sampling results from the December 5, 1995 monitoring event be submitted to the department for review. |
Amanda Dreyer |
| 11/18/2002 |
Site Characterization Workplan Approved |
The department reviewed and emailed approval this date of the URS "CEMS Groundwater Monitoring Work Plan; 521 East 104th Avenue; Anchorage, Alaska" dated 11/15/02, submitted the same date. Action entered by Petrik. |
Amanda Dreyer |
| 12/23/2002 |
Document, Report, or Work plan Review - other |
Reviewed the URS Corporation report, "CEMS Groundwater Monitoring, Pepsi Cola Bottling Group Warehouse" dated 12/11/02, received by ADEC on 12/13/02. Wells 3 and 4 are now below ADEC cleanup levels. However, contamination is still present at MW-1. ADEC requests that MW-1 be sampled for benzene during the summer of 2003. Please submit work plans. Action entered by Petrik. |
Amanda Dreyer |
| 8/11/2003 |
Document, Report, or Work plan Review - other |
Amanda Dreyer sent a letter to the RP after reviewing the URS report, "CEMS Groundwater Monitoring, Pepsi Cola Bottling Group Warehouse", dated 8/7/03 and received by ADEC 8/11/03. The department requests that a sampling event for benzene be performed at MW-1 during November 2003. Please submit work plans. Action added by Petrik. |
Bill Petrik |
| 12/12/2003 |
Update or Other Action |
The department received a copy of the URS report, "CEMS Groundwater Monitoring, Pepsi Cola Bottling Group Warehouse", dated 12/8/03 and received by ADEC 12/12/03. |
Bill Petrik |
| 1/21/2004 |
Document, Report, or Work plan Review - other |
The program received a letter from the URS, "Groundwater Monitoring, Pepsi Cola Bottling Group Warehouse", dated 1/14/04 and received by ADEC 1/21/04. After two consecutive GW sampling events below MCLs the site can be closed. |
Eric Henry |
| 5/3/2004 |
Document, Report, or Work plan Review - other |
Reviewed the URS report, "CEMS Groundwater Monitoring, Pepsi Cola Bottling Group Warehouse", dated 3/23/04, received by ADEC 3/25/04. Seasonal fluctuations have prevented a NFRAP determination. |
Eric Henry |
| 10/25/2004 |
Document, Report, or Work plan Review - other |
The department reviewed the URS report, "CEMS Groundwater Monitoring, Pepsi Cola Bottling Group Warehouse", dated 10/6/04, received by the department 10/7/04. URS requested annual monitoring until cleanup levels are achieved. Eric Henry reviewed the Fall 2004 Groundwater Monitoring Report for the Pepsi Cola Bottling Group Warehouse. The report shows that one well at the site has benzene concentrations above 18 AAC 75 Table C cleanup levels. The report concludes that trends indicate benzene levels at the site are decreasing and that benzene concentrations are the highest during low water table conditions. ORC socks have been inserted into MW-1 to assist with the attenuation of benzene.
DEC approves annual groundwater monitoring at this site provided groundwater sampling take place in the fall each year, when groundwater levels are low and benzene concentrations are typically higher, until cleanup levels are achieved. When the cleanup level is achieved, semi-annual groundwater monitoring will resume until analytical trends indicate benzene levels are below cleanup levels in both high and low groundwater conditions. Additionally, DEC requests that ORC socks be removed six months prior to the sampling event. Action added by Petrik. |
Eric Henry |
| 12/20/2004 |
Update or Other Action |
Cost Recovery Packages containing Department of Law Memo, Site Logs, a complete ADEC bill, and Intent to Cost Recovery Letter have been sent to the site's ADEC staff lead. Staff will review the packages and send on to Law. |
Pam Mickelson |
| 3/2/2005 |
Institutional Control Record Established |
The Jim Frechione NFRAP decision letter mailed this date mandated an institutional control in the form of a note placed in the ADEC LUST Database. Action added by Petrik. |
Jim Frechione |
| 3/2/2005 |
Conditional Closure Approved |
NFRAP Letter by Jim Frechione. Based on the information provided to date, ADEC has determined that no further remedial action is required for the site. This decision is subject to the following conditions:
1. The groundwater will be sampled in the fall of 2005 to determine water quality conditions. Annual groundwater monitoring will continue until two consecutive groundwater sampling events indicate that contamination is below Table C cleanup levels.
Once the monitoring results confirm groundwater concentrations are consistently below 18 AAC 75.345 Table C levels, then site closure may be issued provided soil meets current 18 AAC 75.341 Method 2 cleanup levels. Benzene concentrations were below the cleanup criteria in place at the time of UST closure; however, the last soil analytical data taken from the site indicates that soil exceeds the current Method 2 cleanup level for benzene. Once
groundwater is verified below Table C cleanup levels, the monitor wells can be
decommissioned and that may be an appropriate time to sample undisturbed soil from MW-1. It is likely that natural attenuation has reduced benzene levels in soil and if soil analytical data from samples taken at MW-1 indicates contamination in soil is below current Method 2 cleanup criteria then closure can be issued.
2. A report that can be approved by DEC and describes the sampling event(s), including but not limited to findings and summary tables of data from all sampling events, will be provided to DEC within 60 days of the sampling event(s).
3. In accordance with 18 AAC 78.274(b), ADEC approval must be obtained prior to removal and/or disposal of contaminated soil and groundwater from this site to an off-site location.
Action added by Petrik. |
Jim Frechione |
| 10/4/2005 |
Update or Other Action |
Project manager changed from Eric Henry to Bill Petrik. |
Sarah Cunningham |
| 11/16/2005 |
Update or Other Action |
Used TopoZone Pro in conjunction with Anchorage Area Atlas and site plans and figures to obtain coordinates. Used a Large Size Map at 1:3,333 Scale High-Res Urban Aerial Photo, NAD83. High degree of confidence in lat/long values. |
Bill Petrik |
| 3/14/2006 |
Update or Other Action |
Received copy of memo dated 3/10/06 from Kay Rawlings, D.O.L., to Lori Barnett of ADEC indicating that a check from the RP was received for the latest round of Cost Recovery. |
Bill Petrik |
| 3/16/2006 |
Update or Other Action |
The department received a copy by email of the URS report, "Groundwater Monitoring, Pepsi Cola Bottling Group Warehouse", dated 3/16/06. It was for a groundwater monitoring event that occurred 3/2/06. Hardcopy made and added to the file. |
Bill Petrik |
| 3/21/2006 |
Update or Other Action |
The department received a copy by email of the URS report, "Groundwater Monitoring, Pepsi Cola Bottling Group Warehouse", dated 11/28/05. It was for a groundwater monitoring event that occurred 8/23/05. Hardcopy made and added to the file. |
Bill Petrik |
| 4/19/2006 |
Document, Report, or Work plan Review - other |
Reviewed the URS report "Groundwater Monitoring, Pepsi Bottling Group Warehouse, 521 East 104th Avenue; Anchorage, Alaska" dated March 16, 2006. URS, preformed groundwater sampling on March 2, 2006 and subsequently prepared a report which we received via email on March 16, 2006. In summary, it has been demonstrated that benzene cleanup level concentrations in the contaminated groundwater at the site are reduced below 18 AAC 75.345 levels at MW-1. Subsequently, groundwater monitoring wells may be decommissioned. Site Closure may be obtained once you have demonstrated that the benzene contamination level in soil at MW-1 has dropped below the ADEC 18 AAC 75.341 level and reports submitted to the department documenting the decommissioning and sampling results within 60 days of these events have been reviewed and approved by the department. |
Bill Petrik |
| 12/5/2006 |
Update or Other Action |
Received a cover letter and copy of the Dames & Moore "Report; Biannual Groundwater Monitoring, 1995; Former ALPAC Corporation Facility; 521 East 104th Ave; Anchorage, Alaska" dated 12/5/95. |
Lynne Bush |
| 12/12/2006 |
Leaking Underground Storage Tank Corrective Action Underway |
Mailed and facsimilied a copy of a letter in response to the URS Corporation e-mail work plan "Well Decommissioning and Soil Sampling" dated December 1, 2006 to the RP and consultant. Approved the work plan but with numerous conditions including additional boreholes and sampling conditions. Requested reconsideration of decommissioning of MWs until results of soil samples have been submitted for CSP review. Also requested a CSM, Lab Review Checklist, and requirement for approval to transport IDW off site. |
Bill Petrik |
| 3/7/2007 |
Document, Report, or Work plan Review - other |
The CSP completed a letter to the RP in response to the URS Corporation "Response to Additional ADEC Requirements for NFA Status" dated February 20, 2007 to the CSP. The document was received by e-mail on February 21, 2007 and included a work plan. The site is currently in conditional closure status and multi-year ground water monitoring documented ground water attenuation below 18 AAC 75.341 cleanup levels. However, in order to achieve site closure, the RP needs to demonstrate that soil formerly contaminated above 18 AAC 75.341 Method 2 benzene cleanup levels has currently attenuated below those levels. The RP’s consultant requested a site closure based on only one boring and sampling event in the vicinity of where the worst soil contamination was originally discovered in lieu of four borings and samplings as outlined in a CSP letter to the RP dated December 12, 2006. The other three areas where borings and sampling was requested had documented levels of benzene in soil nearly as high as the single site they proposed boring and sampling. The work plan was approved along with a slightly alternate location than was proposed in the December 12, 2006 CSP letter to the RP. However, no site closure would be granted based on the results of the single proposed boring. |
Bill Petrik |
| 4/17/2007 |
Document, Report, or Work plan Review - other |
The Contaminated Sites Program (CSP) reviewed and approved the URS "Work Plan - Subsurface Soil Investigation, Pepsi Bottling Group Warehouse" dated 3/36/07 for this site. The work plan calls for drilling four soil boreholes for potential site closure. The contaminant of concern at this site is benzene. Long-term ground water monitoring occurred at the site and contaminant levels were reduced to below cleanup levels. The soil is the remaining issue. Because the site is requesting closure, the responsible party was asked to sample for gasoline range organics, diesel range organics, and BTEX (benzene, toluene, ethylbenzene, and total xylenes). |
Bill Petrik |
| 4/17/2007 |
Site Visit |
Met with a responsible party representative and their consultant, MArk Vania, and located four tentative borehole locations. Updated the latitude and longitude after performing a location fix using a Garmin Model GPS76. |
Bill Petrik |
| 7/10/2007 |
Document, Report, or Work plan Review - other |
Reviewed an electronic version of the URS "Final Report, Subsurface Soil Investigation, Pepsi Bottling Group" dated 6/26/07, received via email the same date. Four soil borings were drilled in an attempt to obtain site closure. Benzene was detected in the sample BB1R-16 collected at a depth of 16 feet bgs from boring BB-1R at a concentration of 0.0247 mg/kg, and in sample BD1-13.5 collected at a depth of 13.5 feet from boring BD-1 at a concentration of 0.414 mg/kg. Both reported concentrations are above the ADEC cleanup level for benzene in soil of 0.02 mg/kg. Closure cannot be granted based on these analytical results. Site remains in Conditional Closure Status. |
Bill Petrik |
| 7/25/2007 |
Site Reopened |
With the installation of a soil vapor extraction system at the site, additional remedial activites are occurring, therefore the site is being reopened. Action added 9/7/11 |
Bill O'Connell |
| 7/24/2008 |
Site Characterization Workplan Approved |
The Contaminated Sites Program (CSP) sent an email response to Mark Vania this date with no objection to further charactrerization of contaminated soil in the vicinty of historical contamination as outlined in the URS Corporation work plan "Notification of Remediation System Installation; Pepsi Bottling Group Warehouse" dated and received by the CSP on 6/23/08 for the site named Pepsi Cola Warehouse, located in Anchorage. |
Bill Petrik |
| 11/19/2008 |
Site Characterization Report Approved |
On 7/9/08 the Contaminated Sites Program (CSP) reviewed a hard copy of the URS "Final Report; Subsurface Soil and Groundwater Investigation; Pepsi Bottling Group Warehouse; 521 East 104th Avenue; Anchorage, Alaska" dated 1/22/08, received by the CSP on 1/25/08. The CSP sent a letter to Pepsi, this date, approving this characterization report.
In April 2007, four soil borings were drilled and sampled for GRO, DRO, and BTEX. Soil contamination above cleanup levels was subsequently detected for benzene in two borings at 0.0247 mg/kg and 0.414 mg kg and for toluene in one boring at 15.4 mg/kg. The respective cleanup levels are 0.02 mg/kg and 5.4 mg/kg.
Because of the elevated contaminant levels, a second characterization was performed in October 2007 to further characterize the extent of contamination. Six borings were drilled and one monitoring well was installed in one of the six borings. Soil and ground water was sampled for GRO, DRO, and BTEX.
Soil contamination above cleanup levels was subsequently detected for GRO at 639 mg/kg in one boring, benzene in three borings ranging from 0.259 mg/kg to 3.39 mg kg, for toluene in one boring at 10.3 mg/kg, ethylbenzene in two borings ranging from 6.29 mg/kg to 34.6 mg/kg, and total xylenes in one boring at 136.41 mg/kg. The respective soil cleanup levels in mg/kg are 300, 0.02, 5.4, 5.5 and 78. Contamination above cleanup levels in the monitoring well boring was detected at 10 and 20 feet below ground surface.
GRO contamination was detected in the primary and duplicate ground water samples taken from the monitoring well. The maximum concentration detected was 7.35 mg/l.
The report recommended that monitoring wells MW-3, MW-4, and MW-5 be sampled again and because the responsible party wishes to continue to work for a Closure status that an evaluation of in-situ remedial approaches and selection of a remedial alternative completed. The CSP concurs with these recommendations. |
Bill Petrik |
| 10/8/2010 |
Site Characterization Workplan Approved |
The CSP completed review of the URS Corporation "Soil Confirmation Workplan" dated and received electronically 7/22/10. The work plan called for completing soil borings and submitting samples for laboratory analysis, starting the AS/SVE system in the event that contamination is found at levels exceeding the current regulatory standards for the site chemicals of concern, and completion of a confirmation sampling and operational summary report. The work plan was approved with the conditions that: DRO is added to the list of analytes for laboratory analysis; for borings where more than one sample is planned ensure that one sample from the GW interface is submitted for laboratory analysis; include soil boring logs and related details with the subsequent report; approval from the CSP is required prior to transport of any contaminated media from the site for disposal; ensure a multitude of details in the report not outlined in the work plan; and submit a Conceptual Site Model (CSM) for the site with the report of findings. |
Bill Petrik |
| 9/6/2011 |
Document, Report, or Work plan Review - other |
Reviewed 2010 Groundwater Monitoring Report. Of the four wells sampled, only MW-5 had a detectable concentration of benzene at 0.00127 mg/l, below the cleanup level of 0.005 mg/l. |
Bill O'Connell |
| 9/9/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 76649 name: 3 USTs |
Bill O'Connell |
| 9/9/2011 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 76649 3 USTs. |
Bill O'Connell |
| 10/6/2011 |
Institutional Control Record Removed |
Institutional Controls have been removed. |
Bill O'Connell |
| 10/6/2011 |
Long Term Monitoring Complete |
Administrative action on 5/1/2013. |
Kristin Thompson |
| 10/6/2011 |
Cleanup Complete Determination Issued |
The Alaska Department of Environmental Conservation, Contaminated Sites Program (ADEC) has completed a review of the environmental records associated with the Pepsi Cola Warehouse located at 521 East 104th Avenue in Anchorage, Alaska. 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 this site will be closed |
Bill O'Connell |
| 11/15/2011 |
Update or Other Action |
The remaining monitoring wells at the site were decommissioined in accordance with DEC guidance. |
Bill O'Connell |
| 8/27/2015 |
Update or Other Action |
The file has been archived at Alaska Archives Barcode 896962 Box 396 |
Susan Carberry |
