Site Report: Pacific Mitsubishi

Site Name:	Pacific Mitsubishi
Address:	4904 Old Seward Highway.;, Anchorage, AK 99503
File Number:	2100.26.206
Hazard ID:	23655
Status:	Cleanup Complete
Staff:	IC Unit, 9074655229 dec.icunit@alaska.gov
Latitude:	61.174975
Longitude:	-149.868706
Horizontal Datum:	NAD83

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

1,000 gallon waste oil tank out of use. Soil boring near tank found contamination (14,000 TPH, 5,300 DRO, 50 GRO) in saturated soil sample. F.K.A. L55.34.

Action Information

Action Date	Action	Description	DEC Staff
5/7/1991	Site Visit	Department staff inspected the facility to follow up on a complaint concerning the floor drain system and its associated used oil tank. It was apparent that the oil/water separator were not functioning properly. It appeared that the separator had been altered to the point that oily waste was being discharged directly into the municipal sewer system and into the subsurface soil. Soil beneath the concrete slab, adjacent to the oil/water separator, was visibly contaminated with petroleum products. Verbal recommendations were provided during the inspection including hiring a qualified person or firm to conduct an assessment to determine the full extent and magnitude of the contamination which has resulted from discharges associated with the floor drain. Action added by Petrik.	John Halverson
5/21/1991	Update or Other Action	DEC received a letter this date from Dieter Wuerth indicating that several changes were made to the shop drain system and the system was inspected by Jeff Cooper of Central Plumbing and Heating. Action added by Petrik.	John Halverson
5/29/1991	Site Visit	A follow-up inspection was conducted. The oil/water separator appeared to be functioning much better than was observed during the initial inspection on 5/7/91. Pacific Mitsubishi staff were again informed of the need to have an assessment conducted by qualified personnel and that a cleanup may be required. Action added by Petrik.	John Halverson
7/11/1991	Update or Other Action	A letter was sent as a formal request to European Motors to have a qualified person or firm conduct a site assessment to define the full extent and magnitude of soil and possible groundwater contamination associated with the floor drain system. Please submit a site assessment work plan to the Anchorage District Office by 7/31/91. Action added by Petrik.	John Halverson
7/19/1991	Underground Storage Tank Site Characterization or Assessment	The department received a Shannon & Wilson, Inc. "Site Assessment for the Mitsubishi Waste Oil Tank and Oil/Water Separator, Grouting Oil Separator Box, Anchorage, Alaska" dated 7/18/91. Action added by Petrik.	Scott Bailey
7/22/1991	Update or Other Action	The department received a Shannon & Wilson, Inc. "Review of Alterations of the Oil/Water Separator Box at 4904 Old Seward Highway, Anchorage, Alaska" dated 7/22/91. Action added by Petrik.	John Halverson
7/23/1991	Update or Other Action	The department received a Shannon & Wilson, Inc. "Revised Work Plan for Pacific Mitsubishi, 4904 Old Seward Highway, Anchorage, Alaska" dated 7/23/91. Action added by Petrik.	Scott Bailey
11/4/1991	Document, Report, or Work plan Review - other	Approved a Shannon & Wilson, Inc. "Revised Work Plan for Pacific Mitsubishi, 4904 Old Seward Highway, Anchorage, Alaska" dated 7/23/91. Action added by Petrik.	Scott Bailey
9/3/1992	Underground Storage Tank Site Characterization or Assessment	Phase 1 Site Assessment Review performed.	Former Staff
9/21/1992	Leaking Underground Storage Tank Release Confirmed - Petroleum	LUST Site created in CSP for source area ID 78063 Site added to the LUST database. Received a Shannon & Wilson, Inc. facsimile "Waste Oil UST Spillage at 4904 and 4908 Old Seward Highway, Anchorage, Alaska" and dated 9/18/92 and a report titled "Underground Storage Tank (UST) Site Assessment, 4904 and 4908 Old Seward Highway, Anchorage, Alaska" dated September 1992. It indicated that a 1,000 gallon waste oil tank was taken out of use. Soil and GW contaminated with GRO, DRO, RRO, and BTEX. Tank was closed on 11/15/91. Investigative soil borings drilled on 9/3/92 and lab results were available on 9/17/92. Action appended by Petrik.	Robert Weimer
9/21/1992	Site Added to Database		Former Staff
9/22/1992	Update or Other Action	Notice of Release letter sent.	Robert Weimer
9/23/1992	Update or Other Action	Received a Shannon & Wilson, Inc. "Site Specific QAPP the Waste Oil UST removals at 4904 and 4908 Old Seward Highway, Anchorage, Alaska" dated 9/22/91. Action added by Petrik.	Robert Weimer
9/24/1992	Leaking Underground Storage Tank Cleanup Initiated - Petroleum	LUST Corrective Action Underway. The department completed its review of the Shannon & Wilson, Inc. 9/22/92 "Site Specific QAPP for the Waste Oil Removals at 4904 and 4908 Old Seward Highway, Anchorage, Alaska" received 9/23/92. The plan is approved provided that UST samples will be analyzed for TPH, HVO, BTEX, GRO and DRO. Additionally, the sample with the highest PID reading will be analyzed for cadmium. The saturated samples will be analyzed for TPH, HVO, and BTEX.	Former Staff
12/7/1992	Document, Report, or Work plan Review - other	The department has reviewed the Shannon & Wilson, Inc. (S&W) Underground Storage Tank Removal report dated 10/92, received 11/4/92. The report documents that some soil and groundwater contamination remain above cleanup levels. The department concurs with S&W's recommendation that further investigation into the extent of the contamination is warranted. Please provide a plan for further investigation. The department also requests that a drinking water well survey be conducted to identify any potential receptors in the area. Please submit requested plans/reports above by 2/5/93. Action added by Petrik.	Robert Weimer
3/15/1993	Update or Other Action	Sent a letter acknowledging receipt of Application for Tank Cleanup Grant and Loan Program. In addition, sent a form and requested the RP to complete a Priority Ranking Questionnaire. Action added by Petrik.	Former Staff
1/12/1994	Update or Other Action	Letter sent to RP accepting them into the UST Financial Assistance Program.	Former Staff
2/8/1994	Update or Other Action	Site reranked. New Score 111. Action added by Petrik.	Robert Weimer
3/22/1994	Update or Other Action	Letter sent advising RP that the priority ranking list was revised and that this site still qualifies for the financial assistance program in FY94. However, a Priority Ranking Questionnaire mailed to the RP on 3/22/93 and requested to be completed was not. The RP will have an opportunity to become active on next year's list by responding to a new Priority Ranking Questionnaire which will be mailed out soon. Action added by Petrik.	Former Staff
4/20/1994	Update or Other Action	Due to limited funding, incomplete information in your application, or failure to respond to last year's Priority Ranking Questionnaire, your facility did not receive assistance in FY 94. Action added by Petrik.	Former Staff
5/13/1994	Update or Other Action	The department received a copy of the Shannon & Wilson, Inc. "Disposal of Waste Soils from European Motors, 4908 and 4904 Old Seward Highway, Anchorage, Alaska" dated 5/11/94 requesting ADEC approval to dispose of waste soils that were excavated during removal of two waste oil USTs at Alaska Soils Recycling. Action added by Petrik.	Bill Petrik
6/2/1994	Update or Other Action	The department received a copy of the Shannon & Wilson, Inc. "Disposal of Waste Soils from European Motors, 4908 and 4904 Old Seward Highway, Anchorage, Alaska" dated 5/31/94. Received a letter from Shannon & Wilson, Inc. dated 5/31/94 that included copies of the scale receipts for transporting contaminated soils from 4904 and 4908 Old Seward Highway sites to Alaska Soil Recycling for thermal processing. According to the receipts, a total of 72.25 tons of contaminated soil was transported to ASR on 5/26/94. Action added by Petrik.	Bill Petrik
7/20/1994	Update or Other Action	Letter sent to the RP indicating that they were accepted into the Tank Cleanup Grant and Loan Program for FY95.	Former Staff
7/22/1994	Update or Other Action	Received a letter on 7/22/94 from Anchorage Soils Recycling indicating that on 5/26/94, 72.25 tons of petroleum-contaminated soil was received from 4908 and 4904 Old Seward Highway, Anchorage, Alaska. On 6/21/94, thermal remediation of the soils was completed. Enclosed post remedial analysis indicates that the soil meets or exceeds ADEC cleanup levels. Action added by Petrik.	Robert Weimer
10/14/1994	Update or Other Action	Letter sent to RP indicating that they are eligible to receive up to $10,000 for the Phase I grant.	Former Staff
9/27/1995	Update or Other Action	Letter sent to the RP indicating that the RP did not respond to the ADEC priority Ranking Questionnaire sent out on 3/9/95 and thus are not eligible for financial assistance in FY96.	Former Staff
2/20/1996	Update or Other Action	Letter sent to the RP indicating that an application to the Tank Cleanup Grant and Loan Program for FY97 was received by ADEC. Additional information is requested in order to priority rank the application.	Former Staff
11/20/1997	Update or Other Action	ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: Julius & Juergen Wuerth.	Jim Hayden
12/9/1998	Update or Other Action	Letter sent to Michael Wuerth indicating that Tank Closure Grant No. 15256561 for European Motors and Tank Closure Grant No. 15256661 for Pacific Mitsubishi are terminated effective 12/9/98.	Teresa Boston
3/22/2001	Update or Other Action	at European Motors and Pacific Mitsubishi	Curtis Conner
12/21/2001	Update or Other Action	Project manager changed from Lynne Bush to Rich Sundet.	Lynne Bush
6/26/2002	Update or Other Action	Contacted Mike Wuerth at 562-2427 and asked for any reports produced since 1992.	Amanda Dreyer
11/6/2002	Update or Other Action	Sent a letter to Steve Wuerth regarding his request for a NFRAP determination for both European Motors and Pacific Mitsubishi sites. Request for No Further Remedial Action Planned Status denied. The CSP cannot issue a NFRAP letter for the European Motors site at this time until further information is provided to demonstrate that the contaminated area is properly characterized and the site does not pose a risk to human health or the environment. Presented the RP with an outline of the work needed to be performed before a NFRAP can be issued by the department.	Amanda Dreyer
1/29/2003	Underground Storage Tank Site Characterization or Assessment	After reviewing a Watkins Engineering, Inc. "Site Characterization Workplan for Pacific Mitsubishi, ADEC File No. L55.34, European Motors, ADEC File No. L55.40" dated 1/24/03, received by DEC 1/27/03, met with the consultant at the site and moved some of the proposed monitoring well locations.	Amanda Dreyer
2/4/2003	Release Investigation	After reviewing a Watkins Engineering, Inc. "REVISED Site Characterization Workplan for Pacific Mitsubishi, ADEC File No. L55.34, European Motors, ADEC File No. L55.40" dated 1/31/03, received by DEC 2/3/03, approved the workplan with stipulations. The conditions are that the proposed soil sample location 4 be sampled for metals (arsenic, barium, cadmium, chromium, lead, nickel, and vanadium) in addition to the proposed analyses listed in Table 2 of the workplan.	Amanda Dreyer
8/14/2003	Release Investigation	The department received a Watkins Engineering, Inc. "Site Characterization; Pacific Mitsubishi, ADEC File No. L55.34; European Motors, ADEC File No. L55.40" report, dated 8/14/03, requested a NFRAP for both sites. Contaminated soil and groundwater remain on site at low levels.	Amanda Dreyer
8/21/2003	Release Investigation	Release Investigation was performed by Watkins Engineering, Inc. The results are included in the report "Site Characterization, Pacific Motors, Inc., Interair S/D Lots 10 and 11, Anchorage, Alaska, Pacific Mitsubishi: 4904 Old Seward Highway and European Motors: 4908 Old Seward Highway, Anchorage, AK 99503", dated 8/14/03. The results showed low levels of soil and groundwater contamination. It was questioned if contaminated groundwater is moving off site, so additional groundwater sampling during August 2003 was completed to show a possible decrease in contaminant levels. Additional Site Characterization/ Release Investigation was performed. The groundwater sampling showed that contaminant levels are decreasing during high water events. Some of this information was provided to the department in a Watkins Engineering, Inc. report "Site Characterization Update for Pacific Mitsubishi, ADEC File No. L55.34, European Motors, ADEC File No. L55.40" dated 8/21/03.	Amanda Dreyer
9/2/2003	Institutional Control Record Established	Institutional controls for the site are established as a database notation until the conditions of the NFRAP are satisfied. Action entered by Henry.	Jim Frechione
9/2/2003	Conditional Closure Approved	Conditions of the NFRAP are: if the soil above cleanup levels becomes accessible in the future, or if future information indicates the contamination poses a risk to human health or the environment, then additional investigative or cleanup action may be required; contaminated soil and groundwater must not be moved off site without DEC's approval; a groundwater monitoring plan shall be prepared and submitted to the DEC for review and approval. DEC requests monitoring wells MW 1 be sampled for DRO and RRO, MW 2 sampled for PAHs and lead, MW 3 sampled for RRO, MW 4 sampled fro DRO, RRO, and lead, and MW 5 sampled for DRO and lead; annual groundwater monitoring made during high groundwater levels until a decreasing trend in groundwater contamination is established and to monitor off site migration. Based on future monitoring events, the DEC may change the sampling frequency and constituents sampled for; an IC shall be attached to the site in the form of a database notation and will remain in effect until the DEC determines that applicable soil and groundwater cleanup levels are achieved. Action entered by Henry and appended by Petrik.	Jim Frechione
9/24/2003	Update or Other Action	Sent a letter to Steve Wuerth reiterating the department's Cost Recovery Policy.	Amanda Dreyer
10/1/2003	Leaking Underground Storage Tank Corrective Action Underway	The department received a Watkins Engineering, Inc. "Ground Water Sampling Plan; Pacific Mitsubishi, ADEC File No. L55.34; European Motors, ADEC File No. L55.40" report on 9/23/03, dated 9/19/03. Sampling scheduled to occur annually during May. One duplicate will be taken for each constituent. The plan is approved.	Amanda Dreyer
11/13/2003	Update or Other Action	The department received a Watkins Engineering, Inc. "Monitoring Well Work; Pacific Mitsubishi, ADEC File No. L55.34; European Motors, ADEC File No. L55.40" report dated 11/7/03. On 10/2/03, Monitoring wells 6, 7, and 8 were decommissioned, flush mount locking caps were installed on the remaining wells, MW 1, 2, 3, 4, and 5. In order to facilitate installation of the flush mounts, the wells were driven slightly deeper. The elevations of the tops of the these well casings was surveyed and the values supplied in the report.	Bill Petrik
1/20/2004	Update or Other Action	The department received a copy of letter from Kay Rawlings of the D.O.L. to Mr. Wuerth dated 1/16/04, reiterating the department's Cost Recovery Policy and provided detailed historical documentation outlining related supporting events.	Bill Petrik
8/13/2004	Document, Report, or Work plan Review - other	The department received and reviewed a Watkins Engineering, Inc. "Ground Water Sampling Results; Pacific Mitsubishi, ADEC File No. L55.34; European Motors, ADEC File No. L55.40" report dated 7/6/04, received by the department 7/26/04. In addition, staff Henry conducted a telephone conversation on 7/16/04 to discuss the submitted groundwater monitoring report with consultant. The consultant is requesting site closure. The consultant also requests permission to remove MW from the PM property. Sampling suspension at monitoring wells MW-1 and MW-3 on the Pacific Mitsubishi site are approved but are not to be decommissioned or removed. Soil at the site remains above cleanup levels. Soil under buildings at both sites has not been characterized. Further work needs to occur prior to DEC considering these sites as closed. Therefore, site closure cannot be granted at this time. DEC requests that continued groundwater monitoring of MW-2 and MW-4. MW-2 should be sampled for lead and MW-4 for DRO and RRO. Samples should be collected in the spring of the year around highest groundwater levels. Site closure can be considered by DEC when at least two consecutive sampling events show that DRO levels are below applicable 19 AAC 75.345 Table C cleanup level.	Eric Henry
9/26/2005	Document, Report, or Work plan Review - other	The department reviewed a Watkins Engineering, Inc. (WEI) letter dated 9/21/05 that requested permission to decommission monitoring wells MW 3 on the Pacific Mitsubishi site and MW 5 on the European Motors site, and its 8/1/05 dated report "Ground Water Sampling Results, Pacific Mitsubishi, ADEC File No. L55.34, European Motors, ADEC File No. L55.40". DEC reviewed the WEI 9/21/05 emailed and facsimiled request from Cindy Ellis to decommission MW-3 and 5. CSP has no objection to decommissioning MW 3 in accordance to the WEI proposal. However, CSP does not approve of decommissioning MW 5 at this time because it has exceeded DRO cleanup levels of 1.5 mg/L in two of those three years. The yearly DRO sampling results were 2.37 mg/L, 1.27 mg/L, and 1.66 mg/L in 2003, 2004, and 2005, respectively. Monitoring is required until cleanup levels are consistently met. In addition, monitoring wells provide information on groundwater flow direction and this may yet be needed. The department requests that a report describing the decommissioning process, which is scheduled to occur in September 2005, and timing of MW 3 be provided within 60 days of decommissioning. DEC also requested further annual monitoring in spring 2006 at MWs 2, 4 and 5 for DRO and also for lead at MW 2 because of levels above Table C that were reported in the 8/1/05 dated report. MW-4 does not need sampling for RRO because data has showed a significant downtrend to non-detectable levels.	Rich Sundet
10/4/2005	Update or Other Action	Project manager changed from Eric Henry to Bill Petrik.	Sarah Cunningham
10/6/2005	Update or Other Action	Received a report from Watkins Engineering, Inc., Anchorage, dated 12/7/05 and received by ADEC 12/13/05. Monitoring Well #3 was decommissioned per the approved work plan dated 9/21/05. Discovery Drilling removed the pipe from the well, filled the well with bentonite, and capped the surface with asphalt.	Bill Petrik
12/13/2005	Document, Report, or Work plan Review - other	Reviewed the Watkins Engineering, Inc. report "Decommissioning of Monitoring Well #3, Pacific Mitsubishi, ADEC File No. L55.34" dated 12/7/05, and received by the department 12/13/05. Pipe removed, borehole filled with bentonite, and surface capped with asphalt. Decommissioning approved.	Bill Petrik
12/14/2005	Update or Other Action	Updated the latitude and longitude in decimal degrees and degrees minutes and seconds using TopoZone Pro in conjunction with site map and Anchorage Area Atlas to improve previous coordinates. Used a Large Size Map at 1:3,333 Scale High-Res Urban Aerial Photo, NAD 83. Very high degree of confidence in lat/long values. Checked land ownership from MOA GIS. Added hardcopies of maps and ownership to file.	Bill Petrik
6/29/2006	Update or Other Action	Sent a letter to European Motors/Pacific Mitsubishi in Anchorage denying a request to change the monitoring well sampling date from May/June to October due to encountering a freeze up of their MWs for this May’s attempted sampling event. Sampling in the past has taken place in the late spring without problems. This time of year was chosen due to annual high water levels. If freeze ups occur in the future the program requested that the consultant continue to revisit the site until the wells have thawed. The site is in conditional closure and the program wishes to maintain consistent sampling time periods to facilitate fair comparison of annual results. The letter also contained a summary and reiteration of department site reporting requirements.	Bill Petrik
7/6/2006	Document, Report, or Work plan Review - other	Approved a Watkins Engineering "Ground Water Sampling Plan" at European Motors and Pacific Mitsubishi, in Anchorage, dated 6/30/06. DRO has been above cleanup levels at both locations and lead as well on the European Motors site before the sampling event. Sampling occurred on 7/1/06. Requested a report of the results within 60 days of sampling date.	Bill Petrik
7/18/2007	Update or Other Action	On this date the CSP received a copy of the Watkins Engineering Inc. report "2007 Ground Water Sampling Results, Pacific Mitsubishi, ADEC File No. L55.34 and European Motors, ADEC File No. L55.40" and "Conceptual Site Model, Pacific Mitsubishi, ADEC File No. L55.34 and European Motors, ADEC File No. L55.40" both dated July 16, 2007.	Bill Petrik
1/28/2008	Update or Other Action	Staff changed from Petrik to Olson.	Bill Petrik
6/2/2008	Exposure Tracking Model Ranking	Intitial Ranking Complete for Source Area: 78063 (Autogenerated Action)
10/21/2009	Update or Other Action	Report submitted documenting the abandonment of 3 remaining groundwater monitoring wells (MW1, MW2 and MW4). The 7 ft long steel casing was removed from the wells by Discovery Drilling, using a hydraulic jack. The holes were filled with NSF-61 approved bentonite, with pea gravel at the surface to prevent frost heave. The surface was patched with asphalt.	Eileen Olson
9/20/2012	Update or Other Action	Staff changed from Eileen Olson to IC Unit.	Kristin Thompson
10/23/2012	Institutional Control Record Removed	Historical conditions at this site meet the 2009 closure policy therefore ICs can be removed. All groundwater monitoring wells were decommissioned in 2009 after monitoring established a decreasing trend in contamination. Any proposal to remove and/or transport soil or groundwater offsite requires prior ADEC approval.	Evonne Reese

Action Date

Action

Description

DEC Staff

5/7/1991

Site Visit

Department staff inspected the facility to follow up on a complaint concerning the floor drain system and its associated used oil tank. It was apparent that the oil/water separator were not functioning properly. It appeared that the separator had been altered to the point that oily waste was being discharged directly into the municipal sewer system and into the subsurface soil. Soil beneath the concrete slab, adjacent to the oil/water separator, was visibly contaminated with petroleum products. Verbal recommendations were provided during the inspection including hiring a qualified person or firm to conduct an assessment to determine the full extent and magnitude of the contamination which has resulted from discharges associated with the floor drain. Action added by Petrik.

John Halverson

5/21/1991

Update or Other Action

DEC received a letter this date from Dieter Wuerth indicating that several changes were made to the shop drain system and the system was inspected by Jeff Cooper of Central Plumbing and Heating. Action added by Petrik.

John Halverson

5/29/1991

Site Visit

A follow-up inspection was conducted. The oil/water separator appeared to be functioning much better than was observed during the initial inspection on 5/7/91. Pacific Mitsubishi staff were again informed of the need to have an assessment conducted by qualified personnel and that a cleanup may be required. Action added by Petrik.

John Halverson

7/11/1991

Update or Other Action

A letter was sent as a formal request to European Motors to have a qualified person or firm conduct a site assessment to define the full extent and magnitude of soil and possible groundwater contamination associated with the floor drain system. Please submit a site assessment work plan to the Anchorage District Office by 7/31/91. Action added by Petrik.

John Halverson

7/19/1991

Underground Storage Tank Site Characterization or Assessment

The department received a Shannon & Wilson, Inc. "Site Assessment for the Mitsubishi Waste Oil Tank and Oil/Water Separator, Grouting Oil Separator Box, Anchorage, Alaska" dated 7/18/91. Action added by Petrik.

Scott Bailey

7/22/1991

Update or Other Action

The department received a Shannon & Wilson, Inc. "Review of Alterations of the Oil/Water Separator Box at 4904 Old Seward Highway, Anchorage, Alaska" dated 7/22/91. Action added by Petrik.

John Halverson

7/23/1991

Update or Other Action

The department received a Shannon & Wilson, Inc. "Revised Work Plan for Pacific Mitsubishi, 4904 Old Seward Highway, Anchorage, Alaska" dated 7/23/91. Action added by Petrik.

Scott Bailey

11/4/1991

Document, Report, or Work plan Review - other

Approved a Shannon & Wilson, Inc. "Revised Work Plan for Pacific Mitsubishi, 4904 Old Seward Highway, Anchorage, Alaska" dated 7/23/91. Action added by Petrik.

Scott Bailey

9/3/1992

Underground Storage Tank Site Characterization or Assessment

Phase 1 Site Assessment Review performed.

Former Staff

9/21/1992

Leaking Underground Storage Tank Release Confirmed - Petroleum

LUST Site created in CSP for source area ID 78063 Site added to the LUST database. Received a Shannon & Wilson, Inc. facsimile "Waste Oil UST Spillage at 4904 and 4908 Old Seward Highway, Anchorage, Alaska" and dated 9/18/92 and a report titled "Underground Storage Tank (UST) Site Assessment, 4904 and 4908 Old Seward Highway, Anchorage, Alaska" dated September 1992. It indicated that a 1,000 gallon waste oil tank was taken out of use. Soil and GW contaminated with GRO, DRO, RRO, and BTEX. Tank was closed on 11/15/91. Investigative soil borings drilled on 9/3/92 and lab results were available on 9/17/92. Action appended by Petrik.

Robert Weimer

9/21/1992

Site Added to Database

Former Staff

9/22/1992

Update or Other Action

Notice of Release letter sent.

Robert Weimer

9/23/1992

Update or Other Action

Received a Shannon & Wilson, Inc. "Site Specific QAPP the Waste Oil UST removals at 4904 and 4908 Old Seward Highway, Anchorage, Alaska" dated 9/22/91. Action added by Petrik.

Robert Weimer

9/24/1992

Leaking Underground Storage Tank Cleanup Initiated - Petroleum

LUST Corrective Action Underway. The department completed its review of the Shannon & Wilson, Inc. 9/22/92 "Site Specific QAPP for the Waste Oil Removals at 4904 and 4908 Old Seward Highway, Anchorage, Alaska" received 9/23/92. The plan is approved provided that UST samples will be analyzed for TPH, HVO, BTEX, GRO and DRO. Additionally, the sample with the highest PID reading will be analyzed for cadmium. The saturated samples will be analyzed for TPH, HVO, and BTEX.

Former Staff

12/7/1992

Document, Report, or Work plan Review - other

The department has reviewed the Shannon & Wilson, Inc. (S&W) Underground Storage Tank Removal report dated 10/92, received 11/4/92. The report documents that some soil and groundwater contamination remain above cleanup levels. The department concurs with S&W's recommendation that further investigation into the extent of the contamination is warranted. Please provide a plan for further investigation. The department also requests that a drinking water well survey be conducted to identify any potential receptors in the area. Please submit requested plans/reports above by 2/5/93. Action added by Petrik.

Robert Weimer

3/15/1993

Update or Other Action

Sent a letter acknowledging receipt of Application for Tank Cleanup Grant and Loan Program. In addition, sent a form and requested the RP to complete a Priority Ranking Questionnaire. Action added by Petrik.

Former Staff

1/12/1994

Update or Other Action

Letter sent to RP accepting them into the UST Financial Assistance Program.

Former Staff

2/8/1994

Update or Other Action

Site reranked. New Score 111. Action added by Petrik.

Robert Weimer

3/22/1994

Update or Other Action

Letter sent advising RP that the priority ranking list was revised and that this site still qualifies for the financial assistance program in FY94. However, a Priority Ranking Questionnaire mailed to the RP on 3/22/93 and requested to be completed was not. The RP will have an opportunity to become active on next year's list by responding to a new Priority Ranking Questionnaire which will be mailed out soon. Action added by Petrik.

Former Staff

4/20/1994

Update or Other Action

Due to limited funding, incomplete information in your application, or failure to respond to last year's Priority Ranking Questionnaire, your facility did not receive assistance in FY 94. Action added by Petrik.

Former Staff

5/13/1994

Update or Other Action

The department received a copy of the Shannon & Wilson, Inc. "Disposal of Waste Soils from European Motors, 4908 and 4904 Old Seward Highway, Anchorage, Alaska" dated 5/11/94 requesting ADEC approval to dispose of waste soils that were excavated during removal of two waste oil USTs at Alaska Soils Recycling. Action added by Petrik.

Bill Petrik

6/2/1994

Update or Other Action

The department received a copy of the Shannon & Wilson, Inc. "Disposal of Waste Soils from European Motors, 4908 and 4904 Old Seward Highway, Anchorage, Alaska" dated 5/31/94. Received a letter from Shannon & Wilson, Inc. dated 5/31/94 that included copies of the scale receipts for transporting contaminated soils from 4904 and 4908 Old Seward Highway sites to Alaska Soil Recycling for thermal processing. According to the receipts, a total of 72.25 tons of contaminated soil was transported to ASR on 5/26/94. Action added by Petrik.

Bill Petrik

7/20/1994

Update or Other Action

Letter sent to the RP indicating that they were accepted into the Tank Cleanup Grant and Loan Program for FY95.

Former Staff

7/22/1994

Update or Other Action

Received a letter on 7/22/94 from Anchorage Soils Recycling indicating that on 5/26/94, 72.25 tons of petroleum-contaminated soil was received from 4908 and 4904 Old Seward Highway, Anchorage, Alaska. On 6/21/94, thermal remediation of the soils was completed. Enclosed post remedial analysis indicates that the soil meets or exceeds ADEC cleanup levels. Action added by Petrik.

Robert Weimer

10/14/1994

Update or Other Action

Letter sent to RP indicating that they are eligible to receive up to $10,000 for the Phase I grant.

Former Staff

9/27/1995

Update or Other Action

Letter sent to the RP indicating that the RP did not respond to the ADEC priority Ranking Questionnaire sent out on 3/9/95 and thus are not eligible for financial assistance in FY96.

Former Staff

2/20/1996

Update or Other Action

Letter sent to the RP indicating that an application to the Tank Cleanup Grant and Loan Program for FY97 was received by ADEC. Additional information is requested in order to priority rank the application.

Former Staff

11/20/1997

Update or Other Action

ADEC sends Notification of Intent to Cost Recover Letter to Current Owner: Julius & Juergen Wuerth.

Jim Hayden

12/9/1998

Update or Other Action

Letter sent to Michael Wuerth indicating that Tank Closure Grant No. 15256561 for European Motors and Tank Closure Grant No. 15256661 for Pacific Mitsubishi are terminated effective 12/9/98.

Teresa Boston

3/22/2001

Update or Other Action

at European Motors and Pacific Mitsubishi

Curtis Conner

12/21/2001

Update or Other Action

Project manager changed from Lynne Bush to Rich Sundet.

Lynne Bush

6/26/2002

Update or Other Action

Contacted Mike Wuerth at 562-2427 and asked for any reports produced since 1992.

Amanda Dreyer

11/6/2002

Update or Other Action

Sent a letter to Steve Wuerth regarding his request for a NFRAP determination for both European Motors and Pacific Mitsubishi sites. Request for No Further Remedial Action Planned Status denied. The CSP cannot issue a NFRAP letter for the European Motors site at this time until further information is provided to demonstrate that the contaminated area is properly characterized and the site does not pose a risk to human health or the environment. Presented the RP with an outline of the work needed to be performed before a NFRAP can be issued by the department.

Amanda Dreyer

1/29/2003

Underground Storage Tank Site Characterization or Assessment

After reviewing a Watkins Engineering, Inc. "Site Characterization Workplan for Pacific Mitsubishi, ADEC File No. L55.34, European Motors, ADEC File No. L55.40" dated 1/24/03, received by DEC 1/27/03, met with the consultant at the site and moved some of the proposed monitoring well locations.

Amanda Dreyer

2/4/2003

Release Investigation

After reviewing a Watkins Engineering, Inc. "REVISED Site Characterization Workplan for Pacific Mitsubishi, ADEC File No. L55.34, European Motors, ADEC File No. L55.40" dated 1/31/03, received by DEC 2/3/03, approved the workplan with stipulations. The conditions are that the proposed soil sample location 4 be sampled for metals (arsenic, barium, cadmium, chromium, lead, nickel, and vanadium) in addition to the proposed analyses listed in Table 2 of the workplan.

Amanda Dreyer

8/14/2003

Release Investigation

The department received a Watkins Engineering, Inc. "Site Characterization; Pacific Mitsubishi, ADEC File No. L55.34; European Motors, ADEC File No. L55.40" report, dated 8/14/03, requested a NFRAP for both sites. Contaminated soil and groundwater remain on site at low levels.

Amanda Dreyer

8/21/2003

Release Investigation

Release Investigation was performed by Watkins Engineering, Inc. The results are included in the report "Site Characterization, Pacific Motors, Inc., Interair S/D Lots 10 and 11, Anchorage, Alaska, Pacific Mitsubishi: 4904 Old Seward Highway and European Motors: 4908 Old Seward Highway, Anchorage, AK 99503", dated 8/14/03. The results showed low levels of soil and groundwater contamination. It was questioned if contaminated groundwater is moving off site, so additional groundwater sampling during August 2003 was completed to show a possible decrease in contaminant levels. Additional Site Characterization/ Release Investigation was performed. The groundwater sampling showed that contaminant levels are decreasing during high water events. Some of this information was provided to the department in a Watkins Engineering, Inc. report "Site Characterization Update for Pacific Mitsubishi, ADEC File No. L55.34, European Motors, ADEC File No. L55.40" dated 8/21/03.

Amanda Dreyer

9/2/2003

Institutional Control Record Established

Institutional controls for the site are established as a database notation until the conditions of the NFRAP are satisfied. Action entered by Henry.

Jim Frechione

9/2/2003

Conditional Closure Approved

Conditions of the NFRAP are: if the soil above cleanup levels becomes accessible in the future, or if future information indicates the contamination poses a risk to human health or the environment, then additional investigative or cleanup action may be required; contaminated soil and groundwater must not be moved off site without DEC's approval; a groundwater monitoring plan shall be prepared and submitted to the DEC for review and approval. DEC requests monitoring wells MW 1 be sampled for DRO and RRO, MW 2 sampled for PAHs and lead, MW 3 sampled for RRO, MW 4 sampled fro DRO, RRO, and lead, and MW 5 sampled for DRO and lead; annual groundwater monitoring made during high groundwater levels until a decreasing trend in groundwater contamination is established and to monitor off site migration. Based on future monitoring events, the DEC may change the sampling frequency and constituents sampled for; an IC shall be attached to the site in the form of a database notation and will remain in effect until the DEC determines that applicable soil and groundwater cleanup levels are achieved. Action entered by Henry and appended by Petrik.

Jim Frechione

9/24/2003

Update or Other Action

Sent a letter to Steve Wuerth reiterating the department's Cost Recovery Policy.

Amanda Dreyer

10/1/2003

Leaking Underground Storage Tank Corrective Action Underway

The department received a Watkins Engineering, Inc. "Ground Water Sampling Plan; Pacific Mitsubishi, ADEC File No. L55.34; European Motors, ADEC File No. L55.40" report on 9/23/03, dated 9/19/03. Sampling scheduled to occur annually during May. One duplicate will be taken for each constituent. The plan is approved.

Amanda Dreyer

11/13/2003

Update or Other Action

The department received a Watkins Engineering, Inc. "Monitoring Well Work; Pacific Mitsubishi, ADEC File No. L55.34; European Motors, ADEC File No. L55.40" report dated 11/7/03. On 10/2/03, Monitoring wells 6, 7, and 8 were decommissioned, flush mount locking caps were installed on the remaining wells, MW 1, 2, 3, 4, and 5. In order to facilitate installation of the flush mounts, the wells were driven slightly deeper. The elevations of the tops of the these well casings was surveyed and the values supplied in the report.

Bill Petrik

1/20/2004

Update or Other Action

The department received a copy of letter from Kay Rawlings of the D.O.L. to Mr. Wuerth dated 1/16/04, reiterating the department's Cost Recovery Policy and provided detailed historical documentation outlining related supporting events.

Bill Petrik

8/13/2004

Document, Report, or Work plan Review - other

The department received and reviewed a Watkins Engineering, Inc. "Ground Water Sampling Results; Pacific Mitsubishi, ADEC File No. L55.34; European Motors, ADEC File No. L55.40" report dated 7/6/04, received by the department 7/26/04. In addition, staff Henry conducted a telephone conversation on 7/16/04 to discuss the submitted groundwater monitoring report with consultant. The consultant is requesting site closure. The consultant also requests permission to remove MW from the PM property. Sampling suspension at monitoring wells MW-1 and MW-3 on the Pacific Mitsubishi site are approved but are not to be decommissioned or removed. Soil at the site remains above cleanup levels. Soil under buildings at both sites has not been characterized. Further work needs to occur prior to DEC considering these sites as closed. Therefore, site closure cannot be granted at this time. DEC requests that continued groundwater monitoring of MW-2 and MW-4. MW-2 should be sampled for lead and MW-4 for DRO and RRO. Samples should be collected in the spring of the year around highest groundwater levels. Site closure can be considered by DEC when at least two consecutive sampling events show that DRO levels are below applicable 19 AAC 75.345 Table C cleanup level.

Eric Henry

9/26/2005

Document, Report, or Work plan Review - other

The department reviewed a Watkins Engineering, Inc. (WEI) letter dated 9/21/05 that requested permission to decommission monitoring wells MW 3 on the Pacific Mitsubishi site and MW 5 on the European Motors site, and its 8/1/05 dated report "Ground Water Sampling Results, Pacific Mitsubishi, ADEC File No. L55.34, European Motors, ADEC File No. L55.40". DEC reviewed the WEI 9/21/05 emailed and facsimiled request from Cindy Ellis to decommission MW-3 and 5. CSP has no objection to decommissioning MW 3 in accordance to the WEI proposal. However, CSP does not approve of decommissioning MW 5 at this time because it has exceeded DRO cleanup levels of 1.5 mg/L in two of those three years. The yearly DRO sampling results were 2.37 mg/L, 1.27 mg/L, and 1.66 mg/L in 2003, 2004, and 2005, respectively. Monitoring is required until cleanup levels are consistently met. In addition, monitoring wells provide information on groundwater flow direction and this may yet be needed. The department requests that a report describing the decommissioning process, which is scheduled to occur in September 2005, and timing of MW 3 be provided within 60 days of decommissioning. DEC also requested further annual monitoring in spring 2006 at MWs 2, 4 and 5 for DRO and also for lead at MW 2 because of levels above Table C that were reported in the 8/1/05 dated report. MW-4 does not need sampling for RRO because data has showed a significant downtrend to non-detectable levels.

Rich Sundet

10/4/2005

Update or Other Action

Project manager changed from Eric Henry to Bill Petrik.

Sarah Cunningham

10/6/2005

Update or Other Action

Received a report from Watkins Engineering, Inc., Anchorage, dated 12/7/05 and received by ADEC 12/13/05. Monitoring Well #3 was decommissioned per the approved work plan dated 9/21/05. Discovery Drilling removed the pipe from the well, filled the well with bentonite, and capped the surface with asphalt.

Bill Petrik

12/13/2005

Document, Report, or Work plan Review - other

Reviewed the Watkins Engineering, Inc. report "Decommissioning of Monitoring Well #3, Pacific Mitsubishi, ADEC File No. L55.34" dated 12/7/05, and received by the department 12/13/05. Pipe removed, borehole filled with bentonite, and surface capped with asphalt. Decommissioning approved.

Bill Petrik

12/14/2005

Update or Other Action

Updated the latitude and longitude in decimal degrees and degrees minutes and seconds using TopoZone Pro in conjunction with site map and Anchorage Area Atlas to improve previous coordinates. Used a Large Size Map at 1:3,333 Scale High-Res Urban Aerial Photo, NAD 83. Very high degree of confidence in lat/long values. Checked land ownership from MOA GIS. Added hardcopies of maps and ownership to file.

Bill Petrik

6/29/2006

Update or Other Action

Sent a letter to European Motors/Pacific Mitsubishi in Anchorage denying a request to change the monitoring well sampling date from May/June to October due to encountering a freeze up of their MWs for this May’s attempted sampling event. Sampling in the past has taken place in the late spring without problems. This time of year was chosen due to annual high water levels. If freeze ups occur in the future the program requested that the consultant continue to revisit the site until the wells have thawed. The site is in conditional closure and the program wishes to maintain consistent sampling time periods to facilitate fair comparison of annual results. The letter also contained a summary and reiteration of department site reporting requirements.

Bill Petrik

7/6/2006

Document, Report, or Work plan Review - other

Approved a Watkins Engineering "Ground Water Sampling Plan" at European Motors and Pacific Mitsubishi, in Anchorage, dated 6/30/06. DRO has been above cleanup levels at both locations and lead as well on the European Motors site before the sampling event. Sampling occurred on 7/1/06. Requested a report of the results within 60 days of sampling date.

Bill Petrik

7/18/2007

Update or Other Action

On this date the CSP received a copy of the Watkins Engineering Inc. report "2007 Ground Water Sampling Results, Pacific Mitsubishi, ADEC File No. L55.34 and European Motors, ADEC File No. L55.40" and "Conceptual Site Model, Pacific Mitsubishi, ADEC File No. L55.34 and European Motors, ADEC File No. L55.40" both dated July 16, 2007.

Bill Petrik

1/28/2008

Update or Other Action

Staff changed from Petrik to Olson.

Bill Petrik

6/2/2008

Exposure Tracking Model Ranking

Intitial Ranking Complete for Source Area: 78063 (Autogenerated Action)

10/21/2009

Update or Other Action

Report submitted documenting the abandonment of 3 remaining groundwater monitoring wells (MW1, MW2 and MW4). The 7 ft long steel casing was removed from the wells by Discovery Drilling, using a hydraulic jack. The holes were filled with NSF-61 approved bentonite, with pea gravel at the surface to prevent frost heave. The surface was patched with asphalt.

Eileen Olson

9/20/2012

Update or Other Action

Staff changed from Eileen Olson to IC Unit.

Kristin Thompson

10/23/2012

Institutional Control Record Removed

Historical conditions at this site meet the 2009 closure policy therefore ICs can be removed. All groundwater monitoring wells were decommissioned in 2009 after monitoring established a decreasing trend in contamination. Any proposal to remove and/or transport soil or groundwater offsite requires prior ADEC approval.

Evonne Reese

Contaminant Information

Name	Level Description	Media	Comments
RRO	> Table C	Groundwater
DRO	> Table C	Groundwater

Name

Level Description

Media

Comments

RRO

> Table C

Groundwater

DRO

> Table C

Groundwater

Control Type

Type	Details
No ICs Required

Type

Details

No ICs Required

Requirements

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

Description

Details

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

Conditional closure notification

No associated sites were found.

Missing Location Data

Because the GIS location data for this site has not been entered, we cannot direct you to its position on the map. Click "Continue" to proceed to the Contaminated Sites Web Map or "Close" to return to the site report.

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Alaska Department of Environmental Conservation

Site Report: Pacific Mitsubishi

Site Chronology

IC / Closure Details

Documents

Associated Sites

Problems/Comments

Action Information

Contaminant Information

Control Type

Requirements

Conditional closure notification

Missing Location Data

State of Alaska Department of Environmental Conservation