Site Report: Office Depot

Site Name:	Office Depot
Address:	201 East 6th Avenue, Anchorage, AK 99502
File Number:	2100.38.138
Hazard ID:	3167
Status:	Cleanup Complete - Institutional Controls
Staff:	IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude:	61.216944
Longitude:	-149.880000
Horizontal Datum:	WGS84

We make every effort to ensure the data presented here is accurate based on the best available information currently on file with DEC. It is therefore subject to change as new information becomes available. We recommend contacting the assigned project staff prior to making decisions based on this information.

Site Chronology
IC / Closure Details
Documents
Associated Sites

Problems/Comments

Soils contaminated with high levels of waste oil and diesel, and low levels of PCBs (<1.04 mg/kg) were encountered during excavation for utilities during the earliest stages of Office Depot store construction. Contamination found to 25 feet below the ground surface in sandy soils A monitoring well was installed in October 1999 and groundwater present at 28 feet was found not to be impacted during five monitoring events. The approximately 650 cubic yards of contaminated soils which were excavated had detectable levels of PCBs, so that the only local thermal treatment facility would not accept the soils for treatment. Shipping soils for treatment out of Anchorage was very costly. Therefore, with the exception of up to 50 cubic yards of highly contaminated soil that was shipped to a DEC-approved facility in Palmer for treatment, the landowner elected to use contaminated soils at the site as a base for a physical barrier per 18 AAC 75.360(11)(G). The Department approved the use of soils with contaminant concentration that did not exceed either 12,500 mg/kg DRO or 1.04 mg/kg PCBs. Contaminated soils were placed in a lift having a maximum thickness of 18 inches in an approximately 50 by 200 foot area beneath what is now the Office Deport parking lot. Lot 2B-1, Block 112A, Original Townsite Subdivision. Last staff assigned was Olson. ~

Action Information

Action Date	Action	Description	DEC Staff
5/12/1999	Update or Other Action	Eklutna, Inc. letter received documenting the May 10, 2010 report of contamination encountered during excavation and providing information on the previous uses of Block 112A, Anchorage Original Townsite. According to Eklutna's records, the portion of the property where contamination was discovered has been vacant as long as it has been in Eklutna's ownership. The letter noted that Eklutna, Inc. received title to the land via State of Alaska Quit Claim Deed No. 1048 in 1988 in partial exchange for the Eagle River Greenbelt. All provided by Eklutna with the letter was a copy of the "Phase 1 Environmental Assessment, Eklutna Site, Anchorage, Alaska, July 31, 1998" prepared by AGI Technologies for (Seattle law firm) McCracken & Associates.	Eileen Olson
5/14/1999	Update or Other Action	Eklutna letter received dated 5/14/1999 with subject line "Petroleum Contaminated Soil Removal". The letter states that on Saturday, May 8, 1999, Unit Company, the prime contractor for Eklutna, Inc.(Eklutna) for the commercial development project being constructed at Cordova Street between 5th and 6th Avenue in Anchorage, encountered old petroleum contamination in the subsurface soils of the property during the excavation of the new building footing. In response to the discovery, Eklutna retained the services of DOWL Engineers to provide guidance and environmental services in support of the removal of the material and temporary stockpiling of the contaminated material on-site. The letter further stated that to date, under the direction of DOWL, contaminated soil has been excavated from approximately 70 feet by 40 feet in size, and up to 25 feet in depth where visual observation and field headspace screening indicated petroleum contamination was present. The area excavated as of the end of the day on Thursday, May 13 is believed to be the limits of the contamination encountered with the exception of the south boundary of the current excavation. The south edge of the excavation is the location of a telephone utilidor and electrical utilidor located in a utility easement in the alley of the property. The utilidor is known to run through several of the blocks adjacent to the property, and suspected of running through most of the downtown Anchorage blocks located between 5th and 6th Avenues. Eklutna has been advised that additional excavation in the area of the south wall of the excavation will jeopardize the integrity of the utilidor and risk its collapse if soils under the utilidor give way into the excavation. As of mid-day Thursday, it is DOWL's opinion that continued excavation along the south edge of the excavation will place the utilidor at risk, and therefore excavation of additional contaminated soil was halted. To date approximately 450 cubic yards of petroleum contaminated material has been removed fiom the location and is stockpiled on the property. Eklutna intends to direct DOWL to complete the field screening and collection of analytical laboratory samples within the excavation and to backfill the excavation with suitable, noncontaminated material before the end of day Friday, May 14,1999.	Eileen Olson
6/1/1999	Update or Other Action	Report submitted "Excavation Assessment, Stockpile Characterization, and Request to Use Petroleum Contaminated Soils as Subbase of Paving Area, 6th Avenue and Cordova Street, Anchorage, Alaska" dated May 28, 1999 and prepared by DOWL Engineers. The report includes stockpile sampling results from 13 analytical samples selected based on field screening results for the 650 cubic yards of stockpiled soil. Results ranged from 470 mg/Kg - 19,000 mg/Kg DRO and up to 12,800 mg/kg RRO. DRO, RRO, PCBs and PCE exceeded cleanup levels with the highest PCB concentration detected 1.04 mg/kg and the highest PCE concentration was 1.14 mg/kg. Up to 50 cubic yards of the most highly contaminated soil based on analytical results and on field observations was disposed of through Alaska Pollution Control in Palmer. The remaining 600 cubic yards proposed for placement beneath the asphalt parking lot averaged approximately 5,000 mg/kg DRO. A meeting was proposed to be held on June 1st to discuss the option of re-use on site.	Eileen Olson
6/1/1999	Meeting or Teleconference Held	A meeting was held between DOWL, Eklutna representatives and DEC staff to discuss requirements for re-use of contaminated soil at the site as a base for an impermeable barrier under 18 AAC 75.360(11)(G).	Eileen Olson
6/28/1999	Update or Other Action	ADEC received report titled "Leachability Assessment, Lot B, Block 112A, Original Townsite, 6th Avenue and Cordova Street, Anchorage, Alaska . . . June 1999" prepared by DOWL Engineers for Eklutna, Inc.	Eileen Olson
7/2/1999	Document, Report, or Work plan Review - other	DEC staff plan discussion with DOWL re three issues to be resolved: The first issue is the concern that the stockpile of contaminated soil may contain small pockets or areas of high contamination not detected during the stockpile sampling. DOWL agreed to have a full-time inspector on site. If areas of heavy staining are encountered, the material will be removed and placed into a super-sac for transport to Alaska Pollution Control's disposal facility in Palmer, Alaska. The objective of the oversight of placement of the contaminated material will be to segregate any observable contamination out of the subbase material. The second issue was DEC's request that additional modeling be done based on the unknown depth to groundwater. DOWL agreed to re-run the model with the assumed groundwater depths of 15 feet and 20 feet (in addition to the modeling using a depth to groundwater of 25 feet already done). practical quantitation limit for the current analytical methods in use. The third issue was defining the characteristics of the proposed location of the re-used material on site, to include a 10-foot setback fiom the edge of pavement, specifying that the proposed depth of the re-used material is 18 inches.	Eileen Olson
7/6/1999	Update or Other Action	DEC received a site plan w/cover letter dated 7/6/1999 showing the proposed horizontal and vertical location of contaminated soil proposed to be placed below the leveling course of the parking lot of the Office Depot store and otherwise responding to all requests made by DEC during the 7/2/2010 telephone conversation. DOWL's letter states that highly contaminated soil will not placed in thesubbase of the new parking area and that DOWL will have a full-time inspector on site. Heavily stained/highly contaminated material will be removed and placed into a super-sac for transport to Alaska Pollution Control's disposal facility in Palmer, Alaska. As per DOWL the objective of the oversight of placement of the contaminated material will be to segregate any observable contamination out of the subbase material.	Eileen Olson
7/19/1999	Update or Other Action	DEC received a plan dated July 15, 1999 titled "Incorporating Low Level Petroleum Contaminated Soils, office Depot Parking Lot". The plan notes that the most highly contaminated soil encountered at the site was placed into Supersacks for disposal off-site, and that approximately 600 cubic yards of low level contaminated soil remains on the site. The developer proposed using the remaining soil as base under the leveling course and asphalt pavement in the parking lot construction.	Eileen Olson
7/22/1999	Cleanup Plan Approved	Staff issued a letter conditionally approving Eklutna's plan to use contaminated soils as a base for a physical barrier (asphalt parking lot). The letter outlined requirements for No Further Remedial Action Planned and Institutional Control Status (NFRAP/IC).	Eileen Olson
7/29/1999	Site Visit	See entry of same date re letter issued.	Eileen Olson
7/29/1999	Document, Report, or Work plan Review - other	Staff issued a letter requesting information about the excavation observed during the site visit of this date, requesting confirmation that highly contaminated soils were being segregated for disposal elsewhere. During the site visit staff observed that a deeper excavation had been made than allowed by regulations for using contaminated soil as a base for a physical barrier (18" is the maximum thickness allowed for a compacted layer of contaminated soil). Staff also observed placement of obviously highly contaminated, product saturated soils in the excavation. Staff called Eklutna and work was stopped until the area to be filled was surveyed and highly contaminated material had been removed. Staff also issued a letter requesting information about the excavation and requesting confirmation that highly contaminated soils were being segregated for disposal elsewhere.	Eileen Olson
8/9/1999	Potentially Responsible Party/State Interest Letter	Staff issued a letter advising Eklutna Inc. of Department cost recovery requirements; AGO later essentially rescinded letter, as the property was formerly State-owned and discussions were ongoing regarding liability for the contamination Eklutna Inc. property at 5th Avenue and Cordova Street, Lot 2B-1, Block 112A, Original Townsite, Anchorage, AK (ADEC).	Eileen Olson
9/9/1999	Update or Other Action	Received property ownership background information from AGO.	Eileen Olson
9/28/1999	Cleanup Plan Approved	Staff approved the "Monitoring Well Installation and Groundwater Sampling Plan" received on this date. The plan proposes the location of the single downgradient groundwater monitoring well requested by DEC in DEC's letter dated July 22, 1999, with three sampling events to take place, with the first prior to October 8, 1999, and the second and third respetively in January 2000 and April 2000.	Eileen Olson
10/20/1999	Update or Other Action	Received DOWL report dated October 19, 1999 of post-construction activities as required by ADEC's 7/22/99 letter. Reporting includes the installation of the groundwater monitoring well on October 1, 1999 and the results of the first groundwater sampling event that took place on October 5, 1999. The results were non-detect for DRO and BTEX. Receipt of results was followed by a telephone conversation with DOWL during which DEC requested that future sampling events include sampling for HVOs, given the presence of PCE in soil at the site.	Eileen Olson
11/5/1999	Update or Other Action	Received letter report dated 11/04/1999 reporting on A/A fractionation results; that is, comparison lab samples for total DRO and A/A fractions).	Eileen Olson
11/8/1999	Update or Other Action	Report - Second of four quarterly groundwater monitoring events submitted by DOWL for sampling of on-site monitoring well that took place on October 20, 1999. No detections above the practical quantitation limit other than chloroform, determined to be present as a laboratory contaminant. Analysis for DRO, BTEX, VOCs/solvents by SW8260.	Eileen Olson
11/19/1999	Update or Other Action	Received report of TOC results "Office Depot - TOC Analysis" dated November 18, 1999. TOC results were determined to have come from soil hauled in to the site.	Eileen Olson
11/19/1999	Update or Other Action	Received "Asphalt Pavement Monitoring Plan . . . October 1999."	Eileen Olson
2/2/2000	Site Added to Database	Contaminant source unknown; heating oil fuel and waste oil-saturated soils with low-level tetrachloroethene (TCE) and PCBs.	Eileen Olson
2/2/2000	Site Ranked Using the AHRM	Initial ranking.	Eileen Olson
2/23/2000	Update or Other Action	DEC received from Shannon & Wilson field notes and laboratory results for groundwater samples collected on 2/11/2000. The only contaminant detected was chloroform, determined to be a laboratory contaminant, at concentrations below the cleanup level.	Eileen Olson
5/10/2000	Update or Other Action	DEC received from Shannon & Wilson field notes and laboratory results for groundwater samples collected on May 1, 2000. The only contaminant detected was chloroform, determined to be a laboratory contaminant, at concentrations below the cleanup level. This was the last of four quarterly monitoring events.	Eileen Olson
8/4/2005	GIS Position Updated	Handheld GPS. WGS84.	Sarah Cunningham
4/18/2008	Exposure Tracking Model Ranking	Initial ranking with ETM completed. Ssource area id: 78363 name: DRO RRO PCBs PCE - LUST or injection well spill (unknown)	Eileen Olson
8/17/2010	Site Visit	Brief site visit to observe decommissioning of monitoring well in Barrow St. (presumed) right-of-way a few feet northwest of west property boundary.	Eileen Olson
9/1/2010	Cleanup Complete Determination Issued	DEC issued Cleanup Complete - Institutional Controls status and accompanying Notice of Environmental Contamination to be recorded on the deed. ICs include visual monitoring and as-needed maintenance of asphalt pavement that serves as an engineered physical barrier over an 18-inch thick compacted layer of contaminated soil. Groundwater at 28 feet below the ground surface was monitored and found not to be impacted so there are no restrictions on groundwater use or dewatering.	Eileen Olson
9/8/2010	Institutional Control Record Established	Institutional Controls established and entered into the database.	Eileen Olson
9/15/2010	Update or Other Action	DEC received signed "Attachment A: Cleanup Complete-ICs Agreement and Signature Page" dated September 15, 2010. Signing and returning Attachment A of the CC-IC decision document dated 9/1/2010 was a conditon of granting cleanup complete status.	Eileen Olson
9/16/2010	Update or Other Action	DEC received copy of the Notice of Environmental Contamination (NEC) that was recorded and notarized on September 9, 2010. Recordation of the NEC was a condition of granting cleanup complete - ICs status.	Eileen Olson
10/19/2010	Update or Other Action	Updated ETM ranking.	Eileen Olson
6/22/2011	Institutional Control Compliance Review	Received notification that the Office Depot Parking lot Contamination Monitoring Area has been inspected and is adequately sealed and maintained. Reviewed IC and notified responsible party on 8/15/2011 that requirements entail only periodic inspection and maintenance of asphalt barrier as required; and that no surface monitoring is required in other areas of the property including the adjacent alley.	Eileen Olson
9/20/2012	Update or Other Action	Staff changed from Eileen Olson to IC Unit.	Kristin Thompson
9/20/2012	Institutional Control Compliance Review	IC Compliance Review conducted. Reminder system set-up to follow-up with responsible party in 2015.	Kristin Thompson
12/4/2015	Institutional Control Compliance Review	IC compliance review conducted, Office Depot is still in that location which is covered by asphalt, a Notice of Environmental Contamination was filed on the property deed in 2012, and schedule the reminder system for another compliance review in five years time.	Evonne Reese
5/30/2017	Institutional Control Compliance Review	IC compliance review conducted. Closure/IC Details updated. ICs Verification letter issued. Reminder system set to follow-up every five years.	Kristin Thompson
6/6/2017	Institutional Control Periodic Reporting	Received confirmation that there have been no land use or ownership changes at this property.	Kristin Thompson
6/11/2018	Institutional Control Periodic Reporting	Received the 2018 Asphalt Inspection Report for the Office Depot site. There have been no changes. The crack sealant and asphalt remain intact. This site continues to be in compliance with all institutional control requirements.	Kristin Thompson

Action Date

Action

Description

DEC Staff

5/12/1999

Update or Other Action

Eklutna, Inc. letter received documenting the May 10, 2010 report of contamination encountered during excavation and providing information on the previous uses of Block 112A, Anchorage Original Townsite. According to Eklutna's records, the portion of the property where contamination was discovered has been vacant as long as it has been in Eklutna's ownership. The letter noted that Eklutna, Inc. received title to the land via State of Alaska Quit Claim Deed No. 1048 in 1988 in partial exchange for the Eagle River Greenbelt. All provided by Eklutna with the letter was a copy of the "Phase 1 Environmental Assessment, Eklutna Site, Anchorage, Alaska, July 31, 1998" prepared by AGI Technologies for (Seattle law firm) McCracken & Associates.

Eileen Olson

5/14/1999

Update or Other Action

Eklutna letter received dated 5/14/1999 with subject line "Petroleum Contaminated Soil Removal". The letter states that on Saturday, May 8, 1999, Unit Company, the prime contractor for Eklutna, Inc.(Eklutna) for the commercial development project being constructed at Cordova Street between 5th and 6th Avenue in Anchorage, encountered old petroleum contamination in the subsurface soils of the property during the excavation of the new building footing. In response to the discovery, Eklutna retained the services of DOWL Engineers to provide guidance and environmental services in support of the removal of the material and temporary stockpiling of the contaminated material on-site. The letter further stated that to date, under the direction of DOWL, contaminated soil has been excavated from approximately 70 feet by 40 feet in size, and up to 25 feet in depth where visual observation and field headspace screening indicated petroleum contamination was present. The area excavated as of the end of the day on Thursday, May 13 is believed to be the limits of the contamination encountered with the exception of the south boundary of the current excavation. The south edge of the excavation is the location of a telephone utilidor and electrical utilidor located in a utility easement in the alley of the property. The utilidor is known to run through several of the blocks adjacent to the property, and suspected of running through most of the downtown Anchorage blocks located between 5th and 6th Avenues. Eklutna has been advised that additional excavation in the area of the south wall of the excavation will jeopardize the integrity of the utilidor and risk its collapse if soils under the utilidor give way into the excavation. As of mid-day Thursday, it is DOWL's opinion that continued excavation along the south edge of the excavation will place the utilidor at risk, and therefore excavation of additional contaminated soil was halted. To date approximately 450 cubic yards of petroleum contaminated material has been removed fiom the location and is stockpiled on the property. Eklutna intends to direct DOWL to complete the field screening and collection of analytical laboratory samples within the excavation and to backfill the excavation with suitable, noncontaminated material before the end of day Friday, May 14,1999.

Eileen Olson

6/1/1999

Update or Other Action

Report submitted "Excavation Assessment, Stockpile Characterization, and Request to Use Petroleum Contaminated Soils as Subbase of Paving Area, 6th Avenue and Cordova Street, Anchorage, Alaska" dated May 28, 1999 and prepared by DOWL Engineers. The report includes stockpile sampling results from 13 analytical samples selected based on field screening results for the 650 cubic yards of stockpiled soil. Results ranged from 470 mg/Kg - 19,000 mg/Kg DRO and up to 12,800 mg/kg RRO. DRO, RRO, PCBs and PCE exceeded cleanup levels with the highest PCB concentration detected 1.04 mg/kg and the highest PCE concentration was 1.14 mg/kg. Up to 50 cubic yards of the most highly contaminated soil based on analytical results and on field observations was disposed of through Alaska Pollution Control in Palmer. The remaining 600 cubic yards proposed for placement beneath the asphalt parking lot averaged approximately 5,000 mg/kg DRO. A meeting was proposed to be held on June 1st to discuss the option of re-use on site.

Eileen Olson

6/1/1999

Meeting or Teleconference Held

A meeting was held between DOWL, Eklutna representatives and DEC staff to discuss requirements for re-use of contaminated soil at the site as a base for an impermeable barrier under 18 AAC 75.360(11)(G).

Eileen Olson

6/28/1999

Update or Other Action

ADEC received report titled "Leachability Assessment, Lot B, Block 112A, Original Townsite, 6th Avenue and Cordova Street, Anchorage, Alaska . . . June 1999" prepared by DOWL Engineers for Eklutna, Inc.

Eileen Olson

7/2/1999

Document, Report, or Work plan Review - other

DEC staff plan discussion with DOWL re three issues to be resolved: The first issue is the concern that the stockpile of contaminated soil may contain small pockets or areas of high contamination not detected during the stockpile sampling. DOWL agreed to have a full-time inspector on site. If areas of heavy staining are encountered, the material will be removed and placed into a super-sac for transport to Alaska Pollution Control's disposal facility in Palmer, Alaska. The objective of the oversight of placement of the contaminated material will be to segregate any observable contamination out of the subbase material. The second issue was DEC's request that additional modeling be done based on the unknown depth to groundwater. DOWL agreed to re-run the model with the assumed groundwater depths of 15 feet and 20 feet (in addition to the modeling using a depth to groundwater of 25 feet already done). practical quantitation limit for the current analytical methods in use. The third issue was defining the characteristics of the proposed location of the re-used material on site, to include a 10-foot setback fiom the edge of pavement, specifying that the proposed depth of the re-used material is 18 inches.

Eileen Olson

7/6/1999

Update or Other Action

DEC received a site plan w/cover letter dated 7/6/1999 showing the proposed horizontal and vertical location of contaminated soil proposed to be placed below the leveling course of the parking lot of the Office Depot store and otherwise responding to all requests made by DEC during the 7/2/2010 telephone conversation. DOWL's letter states that highly contaminated soil will not placed in thesubbase of the new parking area and that DOWL will have a full-time inspector on site. Heavily stained/highly contaminated material will be removed and placed into a super-sac for transport to Alaska Pollution Control's disposal facility in Palmer, Alaska. As per DOWL the objective of the oversight of placement of the contaminated material will be to segregate any observable contamination out of the subbase material.

Eileen Olson

7/19/1999

Update or Other Action

DEC received a plan dated July 15, 1999 titled "Incorporating Low Level Petroleum Contaminated Soils, office Depot Parking Lot". The plan notes that the most highly contaminated soil encountered at the site was placed into Supersacks for disposal off-site, and that approximately 600 cubic yards of low level contaminated soil remains on the site. The developer proposed using the remaining soil as base under the leveling course and asphalt pavement in the parking lot construction.

Eileen Olson

7/22/1999

Cleanup Plan Approved

Staff issued a letter conditionally approving Eklutna's plan to use contaminated soils as a base for a physical barrier (asphalt parking lot). The letter outlined requirements for No Further Remedial Action Planned and Institutional Control Status (NFRAP/IC).

Eileen Olson

7/29/1999

Site Visit

See entry of same date re letter issued.

Eileen Olson

7/29/1999

Document, Report, or Work plan Review - other

Staff issued a letter requesting information about the excavation observed during the site visit of this date, requesting confirmation that highly contaminated soils were being segregated for disposal elsewhere. During the site visit staff observed that a deeper excavation had been made than allowed by regulations for using contaminated soil as a base for a physical barrier (18" is the maximum thickness allowed for a compacted layer of contaminated soil). Staff also observed placement of obviously highly contaminated, product saturated soils in the excavation. Staff called Eklutna and work was stopped until the area to be filled was surveyed and highly contaminated material had been removed. Staff also issued a letter requesting information about the excavation and requesting confirmation that highly contaminated soils were being segregated for disposal elsewhere.

Eileen Olson

8/9/1999

Potentially Responsible Party/State Interest Letter

Staff issued a letter advising Eklutna Inc. of Department cost recovery requirements; AGO later essentially rescinded letter, as the property was formerly State-owned and discussions were ongoing regarding liability for the contamination Eklutna Inc. property at 5th Avenue and Cordova Street, Lot 2B-1, Block 112A, Original Townsite, Anchorage, AK (ADEC).

Eileen Olson

9/9/1999

Update or Other Action

Received property ownership background information from AGO.

Eileen Olson

9/28/1999

Cleanup Plan Approved

Staff approved the "Monitoring Well Installation and Groundwater Sampling Plan" received on this date. The plan proposes the location of the single downgradient groundwater monitoring well requested by DEC in DEC's letter dated July 22, 1999, with three sampling events to take place, with the first prior to October 8, 1999, and the second and third respetively in January 2000 and April 2000.

Eileen Olson

10/20/1999

Update or Other Action

Received DOWL report dated October 19, 1999 of post-construction activities as required by ADEC's 7/22/99 letter. Reporting includes the installation of the groundwater monitoring well on October 1, 1999 and the results of the first groundwater sampling event that took place on October 5, 1999. The results were non-detect for DRO and BTEX. Receipt of results was followed by a telephone conversation with DOWL during which DEC requested that future sampling events include sampling for HVOs, given the presence of PCE in soil at the site.

Eileen Olson

11/5/1999

Update or Other Action

Received letter report dated 11/04/1999 reporting on A/A fractionation results; that is, comparison lab samples for total DRO and A/A fractions).

Eileen Olson

11/8/1999

Update or Other Action

Report - Second of four quarterly groundwater monitoring events submitted by DOWL for sampling of on-site monitoring well that took place on October 20, 1999. No detections above the practical quantitation limit other than chloroform, determined to be present as a laboratory contaminant. Analysis for DRO, BTEX, VOCs/solvents by SW8260.

Eileen Olson

11/19/1999

Update or Other Action

Received report of TOC results "Office Depot - TOC Analysis" dated November 18, 1999. TOC results were determined to have come from soil hauled in to the site.

Eileen Olson

11/19/1999

Update or Other Action

Received "Asphalt Pavement Monitoring Plan . . . October 1999."

Eileen Olson

2/2/2000

Site Added to Database

Contaminant source unknown; heating oil fuel and waste oil-saturated soils with low-level tetrachloroethene (TCE) and PCBs.

Eileen Olson

2/2/2000

Site Ranked Using the AHRM

Initial ranking.

Eileen Olson

2/23/2000

Update or Other Action

DEC received from Shannon & Wilson field notes and laboratory results for groundwater samples collected on 2/11/2000. The only contaminant detected was chloroform, determined to be a laboratory contaminant, at concentrations below the cleanup level.

Eileen Olson

5/10/2000

Update or Other Action

DEC received from Shannon & Wilson field notes and laboratory results for groundwater samples collected on May 1, 2000. The only contaminant detected was chloroform, determined to be a laboratory contaminant, at concentrations below the cleanup level. This was the last of four quarterly monitoring events.

Eileen Olson

8/4/2005

GIS Position Updated

Handheld GPS. WGS84.

Sarah Cunningham

4/18/2008

Exposure Tracking Model Ranking

Initial ranking with ETM completed. Ssource area id: 78363 name: DRO RRO PCBs PCE - LUST or injection well spill (unknown)

Eileen Olson

8/17/2010

Site Visit

Brief site visit to observe decommissioning of monitoring well in Barrow St. (presumed) right-of-way a few feet northwest of west property boundary.

Eileen Olson

9/1/2010

Cleanup Complete Determination Issued

DEC issued Cleanup Complete - Institutional Controls status and accompanying Notice of Environmental Contamination to be recorded on the deed. ICs include visual monitoring and as-needed maintenance of asphalt pavement that serves as an engineered physical barrier over an 18-inch thick compacted layer of contaminated soil. Groundwater at 28 feet below the ground surface was monitored and found not to be impacted so there are no restrictions on groundwater use or dewatering.

Eileen Olson

9/8/2010

Institutional Control Record Established

Institutional Controls established and entered into the database.

Eileen Olson

9/15/2010

Update or Other Action

DEC received signed "Attachment A: Cleanup Complete-ICs Agreement and Signature Page" dated September 15, 2010. Signing and returning Attachment A of the CC-IC decision document dated 9/1/2010 was a conditon of granting cleanup complete status.

Eileen Olson

9/16/2010

Update or Other Action

DEC received copy of the Notice of Environmental Contamination (NEC) that was recorded and notarized on September 9, 2010. Recordation of the NEC was a condition of granting cleanup complete - ICs status.

Eileen Olson

10/19/2010

Update or Other Action

Updated ETM ranking.

Eileen Olson

6/22/2011

Institutional Control Compliance Review

Received notification that the Office Depot Parking lot Contamination Monitoring Area has been inspected and is adequately sealed and maintained. Reviewed IC and notified responsible party on 8/15/2011 that requirements entail only periodic inspection and maintenance of asphalt barrier as required; and that no surface monitoring is required in other areas of the property including the adjacent alley.

Eileen Olson

9/20/2012

Update or Other Action

Staff changed from Eileen Olson to IC Unit.

Kristin Thompson

9/20/2012

Institutional Control Compliance Review

IC Compliance Review conducted. Reminder system set-up to follow-up with responsible party in 2015.

Kristin Thompson

12/4/2015

Institutional Control Compliance Review

IC compliance review conducted, Office Depot is still in that location which is covered by asphalt, a Notice of Environmental Contamination was filed on the property deed in 2012, and schedule the reminder system for another compliance review in five years time.

Evonne Reese

5/30/2017

Institutional Control Compliance Review

IC compliance review conducted. Closure/IC Details updated. ICs Verification letter issued. Reminder system set to follow-up every five years.

Kristin Thompson

6/6/2017

Institutional Control Periodic Reporting

Received confirmation that there have been no land use or ownership changes at this property.

Kristin Thompson

6/11/2018

Institutional Control Periodic Reporting

Received the 2018 Asphalt Inspection Report for the Office Depot site. There have been no changes. The crack sealant and asphalt remain intact. This site continues to be in compliance with all institutional control requirements.

Kristin Thompson

Contaminant Information

Name	Level Description	Media	Comments
PCBs - Total	Other	Soil	The applicable 18 AAC 75.341 Method Two Table B1 cleanup level is 1.0 mg/kg is for the direct contact exposure pathway.
DRO	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil	Approximately 600 cubic yards of impacted soil containing average DRO concentrations of 5,000 mgkg (ranging fiom 470 mg/kg to 12,500 mg/kg)remains in soil excavated in one area of the site and reused at another as a base for a physical barrier under 18 AAC 75.360(G)(11).
RRO	< Method 2 Most Stringent	Soil	Maximum concentration 9,420 mg/kg remaining in soil reused on site as a base for a physical barrier under 18 AAC 75.360(G)(11).
Tetrachloroethene	Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation	Soil	Maximum concentration remaining is site soils 1.14 mg/kg; volume remaining at site considered to be de minimis based on available information.

Name

Level Description

Media

Comments

PCBs - Total

Other

Soil

The applicable 18 AAC 75.341 Method Two Table B1 cleanup level is 1.0 mg/kg is for the direct contact exposure pathway.

DRO

Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation

Soil

Approximately 600 cubic yards of impacted soil containing average DRO concentrations of 5,000 mgkg (ranging fiom 470 mg/kg to 12,500 mg/kg)remains in soil excavated in one area of the site and reused at another as a base for a physical barrier under 18 AAC 75.360(G)(11).

RRO

< Method 2 Most Stringent

Soil

Maximum concentration 9,420 mg/kg remaining in soil reused on site as a base for a physical barrier under 18 AAC 75.360(G)(11).

Tetrachloroethene

Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation

Soil

Maximum concentration remaining is site soils 1.14 mg/kg; volume remaining at site considered to be de minimis based on available information.

Control Type

Type	Details
Notice of Environmental Contamination	Document No. 2010-046447-0 recorded in the Anchorage Recording District of the State Recorder's Office on 9/16/2010.
Signed CS Determination

Type

Details

Notice of Environmental Contamination

Document No. 2010-046447-0 recorded in the Anchorage Recording District of the State Recorder's Office on 9/16/2010.

Signed CS Determination

Requirements

Description	Details
Advance approval required to transport soil or groundwater off-site.	Standard condition.
Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70)	Standard condition.
Other	Eklutna, Inc. shall report to ADEC every five years to document land use, or report as soon as they become aware of any change in land ownership and/or use, if earlier.
When Contaminated Soil is Accessible, Remediation Should Occur	In the event the contamination becomes accessible and/or an exposure pathway is created, the owner/operator shall notify the ADEC and may be required to conduct a site characterization.
Excavation / Soil Movement Restrictions	If soil in the area of the south sidewall of the May 1999 excavation is excavated or otherwise becomes accessible or an exposure pathway is created, the owner/operator shall notify the ADEC.
Other	Continue to monitor on a permanent basis or until the contaminated soil beneath the pavement has been demonstrated to be remediate to applicable site cleanup levels or disposed of in accordance with ADEC regulations, the asphalt pavement overlying the area shown in Figure 2 of the closure documentation.
Maintenance / Inspection Of Engineering Controls	Visual inspection and maintenance activities for the asphalt pavement shall be conducted on an annual basis.

Description

Details

Advance approval required to transport soil or groundwater off-site.

Standard condition.

Movement or use of contaminated material (including on site) in a manner that results in a violation of the water quality standards is prohibited (18 AAC 70)

Standard condition.

Other

Eklutna, Inc. shall report to ADEC every five years to document land use, or report as soon as they become aware of any change in land ownership and/or use, if earlier.

When Contaminated Soil is Accessible, Remediation Should Occur

In the event the contamination becomes accessible and/or an exposure pathway is created, the owner/operator shall notify the ADEC and may be required to conduct a site characterization.

Excavation / Soil Movement Restrictions

If soil in the area of the south sidewall of the May 1999 excavation is excavated or otherwise becomes accessible or an exposure pathway is created, the owner/operator shall notify the ADEC.

Other

Continue to monitor on a permanent basis or until the contaminated soil beneath the pavement has been demonstrated to be remediate to applicable site cleanup levels or disposed of in accordance with ADEC regulations, the asphalt pavement overlying the area shown in Figure 2 of the closure documentation.

Maintenance / Inspection Of Engineering Controls

Visual inspection and maintenance activities for the asphalt pavement shall be conducted on an annual basis.

Asphalt Condition Report June 2018

Conditional Closure w-Recorded NEC, also - Sept 2010

ICs Verification Letter - issued May 2017

Recorded Deed Notice Sept 2010

Hazard ID	Site Name	File Number
26240	Fairview Areawide Brownfield Assessment	2100.57.020

Hazard ID

Site Name

File Number

26240

Fairview Areawide Brownfield Assessment

2100.57.020

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Alaska Department of Environmental Conservation

Site Report: Office Depot

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Asphalt Condition Report June 2018

Conditional Closure w-Recorded NEC, also - Sept 2010

ICs Verification Letter - issued May 2017

Recorded Deed Notice Sept 2010

Missing Location Data

State of Alaska Department of Environmental Conservation