| Action Date |
Action |
Description |
DEC Staff |
| 2/19/1997 |
Leaking Underground Storage Tank Release Confirmed - Petroleum |
LUST Site created in CSP for source area ID 77853 Release discovered and reported to ADEC this date. Owen Johnson. |
Bill Petrik |
| 2/19/1997 |
Site Added to Database |
|
Former Staff |
| 4/13/1998 |
Leaking Underground Storage Tank Cleanup Initiated - Petroleum |
The program approved a request to dispose of contaminated soils at Alaska Soil Recycling. |
Colin Basye |
| 6/4/1998 |
Update or Other Action |
ADEC grants the waiver of the 15-day notification period for the allowing the closure of 5 USTs to begin on 6/8/98. |
Tim Stevens |
| 6/8/1998 |
Update or Other Action |
ADEC updated the waiver of the 15-day notification period for the allowing the closure of 5 USTs. The new scheduled removal date is 6/11/98. |
Colin Basye |
| 6/8/1998 |
Update or Other Action |
ADEC received a Notification of Intent to Install or Re-Configure USTs. The scheduled date of installation/reconfiguration is 6/17/98 to 7/10/98. |
Colin Basye |
| 6/12/1998 |
Update or Other Action |
The STP sent a letter to Mr. Hawe indicating that the department reviewed the bioventing/SVE plan for the site and it appears to be in agreement with the verbal remediation plan that was discussed on site yesterday. However, the plan is lacking addressing contamination of shallow groundwater at the site. Please address this concern in the forthcoming work plan. |
Colin Basye |
| 10/1/1998 |
Underground Storage Tank Site Characterization or Assessment |
Reviewed the Gilfilian Engineering "UST System Closure Site Assessment" dated 12/30/98 received by DEC for removal of 5 USTs 6/10-17/98. The tank excavation extended to 12' bgs. A test hole beneath the turbine end of the 12,000-gallon UST was dug to 19'. Based on field screening measurements and lab analysis, GRO, benzene and total BTEX contamination above ADEC cleanup levels is still present in the sidewalls (up to 4,830 mg/kg GRO in sample S5 at 12' bgs and up to 83.7 mg/kg benzene in sample S7 at 10.5 ' bgs) and bottom of the excavation (10.7 mg/kg benzene in sample S11 at 19 feet bgs). The horizontal extent of the contamination has been determined to the west and south of the excavation. More assessment is needed to define the horizontal extent of the contamination to the north and east as well as the vertical extent of contamination in the silt below the USTs. Due to the extent of the contamination, a soil and water remediation system was installed, and consequently, the tanks were removed in a manner to minimize the volume of contaminated soil excavated. A total of 91.55 tons of contaminated soil was transported off site for thermal treatment at ASR and documentation for receipt of the soil and related analytical results are present. Contamination remaining in soil: GRO to 4,830 mg/kg, toluene to 544 mg/kg, ethylbenzene to 181 mg/kg, total xylenes to 1,058 mg/kg, all in sample S5, and benzene to 83.7 mg/kg in sample S7. |
Colin Basye |
| 1/4/1999 |
Site Characterization Report Approved |
A letter was sent to Mr. Hawe this date in response to review of the Gilfilian Engineering "UST System Closure Site Assessment" dated 12/30/98. A soil vapor extraction (SVE) remediation system was installed within the perimeter of the excavation after removal of the USTs. Petroleum contamination above cleanup levels remains in side walls and the bottom of the excavation. The department concurs with the report recomendation for a release investigation to focus on vertical and horizontal contamination delineation to the north and east where contamination remains above cleanup levels. Additionally, a method should be recommended to find and remediate contamination under the main building. The air sparging system is questionable as to whether it is designed to function in the vadose or saturateed zone as Figure 7 of the Gilfilian report indicates a 10' burial while the water table may be shallower. |
Colin Basye |
| 6/2/1999 |
Release Investigation |
Received Release Investigation submitted by Alaska Lining and Retrofit, dated June 1, 1999. |
Colin Basye |
| 7/16/1999 |
Release Investigation |
After reviewing the 6/1/99 Alaska Lining & Retrofit RI Workplan, the program requested submittal of a revised version. |
Elaine Cederstrom |
| 7/23/1999 |
Offsite Soil or Groundwater Disposal Approved |
ADEC granted approval to dispose of eight 55-gallon drums of petroleum contaminated soils to Alaska Soil Recycling (ASR) and three 5-gallon buckets of contaminated GW at Alaska Pollution Control after review of soil and GW sampling results. |
Elaine Cederstrom |
| 7/28/1999 |
Offsite Soil or Groundwater Disposal Approved |
ADEC granted approval to dispose of approximately 4 tons of petroleum contaminated soils at the Anchorage Regional Landfill. Clearance was received by the consultant from the MOA on 7/28/99. |
Elaine Cederstrom |
| 8/16/1999 |
Update or Other Action |
Received a letter of cooperation from the landowner to the north of the site for the ADEC to conduct investigations on thier property. |
Elaine Cederstrom |
| 10/27/1999 |
Update or Other Action |
Release Investigation Work Plan due date changed to 11/20/99 from 8/16/99. |
Elaine Cederstrom |
| 12/22/1999 |
Document, Report, or Work plan Review - other |
A Release Investigation report received by DEC. A phone call was made to the RP consultant regarding lack of response to the 10/27/99 DEC letter requesting RI work plan. The consultant states that the RI report was completed and sent to DEC. Another one was sent and received by DEC. He agreed to submit a brief sketch of RI work plan for the record on 12/23/99. A total of six borings and a monitoring well installed in each (MW-1 through MW-6) was performed between June 30 to July 1, 1999. An air sparge line was also installed. Two MWs (MW-7 and MW-8) were also installed on the Round Table Pizza property to the north between September 30 and November 4, 1999. MWs 1, 2, 4, 5, 7 and 8 were installed outside the former UST excavation. MWs 2, 4, 5, 7, and 8 were slow to produce water and bailed dry or nearly dry. Exceedances of 18 AAC 75.341 Method 2 cleanup levels were exceeded in: MW-1 at 21.5 feet for benzene and toluene; MW-2 at 15.5 feet for benzene; MW-3 at 20.5 feet and 25.5 feet for benzene and toluene; and MW-6 at 33.5 feet for benzene. Higher PID readings were measured in borings and samples with lesser PID readings submitted for sampling but not displayed in Table 2. GW sampling occurred in all 8 MWs and an air sparge line for GRO and BTEX. Exceedances of 18 AAC 75.345 cleanup levels for at least one analyte occurred in all MWs except MW-4, 5, and 7. The exceedances ranged to: 240 mg/l GRO in MW-1; 66.2 mg/l benzene in MW-6; 69.1 mg/l toluene for the duplicate for MW-1; 7.49 mg/l ethylbenzene in MW-1; and 39.7 mg/l total xylenes in MW-1. Benzene contamination in MW-8 at 0.0113 mg/l was the only GW contamination above cleanup levels detected off site. The GW Trip Blank results for toluene and P & M - xylene were above the PQL. Based on a conversation with Earl Crapps, the sampling results would not change the outcome of the data in terms of exceedances changed. |
Eleanor Hung |
| 12/23/1999 |
Update or Other Action |
The RP consultant faxed a RI work plan sketch for the two MWs already installed without DEC prior approval. |
Eleanor Hung |
| 1/11/2000 |
Long Term Monitoring Established |
The program requested a corrective action workplan be submitted to by 3/15/00 for the remediation of soil and ground water contamination remaining at the site. In addition, the program requested that all GW monitoring wells be sampled for GRO and BTEX until further notice. |
Linda Nuechterlein |
| 2/16/2000 |
Site Characterization Workplan Approved |
Conditional approval letter sent this date for continued RI in response to letter from Alaska Lining & Retrofit dated 2/9/00. |
Linda Nuechterlein |
| 5/1/2000 |
Update or Other Action |
Reviewed a copy of the Alaska Complete Tank "Continued Release Investigation" dated 4/2/00, received 4/3/00. Three soil borings for MWs 9, 10 & 11 were drilled on 2/22-23/00 to 21', 22', and 21.5' bgs, respectively, and 2" PVC monitoring wells were installed. One sample from each boring taken at the soil water interface (14-15', 14.5-15.5', and 15-16', respectively) was submitted for lab analysis for GRO, and BTEX. Soil samples submitted where highest PID readings were observed. No GRO or BTEX was detected in samples from the borings and PQL < MCLs. The trip blank results for benzene and toluene were above PQLs. Sampling results subsequently not affected.
MWs 1 thru 11 were sampled for DRO, GRO, and BTEX. MWs 2 and 4 were not sampled. Exceedances of at least one analyte resulted for MWs 1, 3, 6, 7 and 11. MWs 1 and 3 exceeded 18 AAC 75.345 cleanup levels for DRO, GRO, and BTEX. MW-6 exceeded cleanup levels for DRO, GRO, benzene, toluene, and ethylbenzene. MWs 7 and 11 exceeded cleanup levels for benzene. MW-5 was non-detectable (ND) for all analytes except GRO which was below the cleanup level. MW-8 was ND for all analytes except DRO was not measured. Both MWs 9 and 10 were ND for GRO, ethylbenzene, and total xylenes but detections below cleanup levels were documented for DRO, benzene, and toluene.
The department sent a letter this date to the RP in response to a 4/26/00 meeting with Mr. Hawe of Alaska Lining & Retrofit to discuss the 4/2/00 report "Continued Release Investigation". The letter requested: GW sampling suspension for air sparge well AS-3; all other monitoring wells should be sampled quarterly for GRO and BTEX; and DRO sampling suspended for all monitoring wells.
Acton appended on 12/4/09 by Petrik.
|
Linda Nuechterlein |
| 5/23/2000 |
Leaking Underground Storage Tank Corrective Action Underway |
A letter of no objection was sent from the program for conducting a pilot test and vapor emission modeling proposal. |
Linda Nuechterlein |
| 6/29/2000 |
Leaking Underground Storage Tank Corrective Action Underway |
An ADEC letter was sent indicating no objection to the installation of the AS/SVE remediation system proposed in Alaska Complete Tank "Soil Vapor Extraction and Air Sparge System Pilot Tests and Blower Specifications" dated 6/23/00. |
Linda Nuechterlein |
| 6/30/2000 |
Document, Report, or Work plan Review - other |
Reviewed the Alaska Complete Tank "Water Quality Report" dated 6/27/00. Field activities occurred between 5/23 and 6/2/00. GW levels rose between 1.5 and 7.5 feet in MWs since the 2/00 GW sampling event. Depth to GW from this event varied from 5.88' bgs at MW-7 to 12.73' bgs at MW-3. GW flow direction was SSW at 0.053 ft/ft. Lab analyses were performed on samples from MWs 1 thru 11 for GRO and BTEX. MW-1 had exceedances for GRO, benzene, toluene, and ethylbenzene. MW-3 had exceedances for GRO and BTEX. MW-6 had exceedances fro GRO, benzene, and toluene. The report review date was actually 12/3/09 but put here as the date the department received it for chronology purposes. |
Bill Petrik |
| 9/5/2000 |
Update or Other Action |
Initial ranking by RP. |
Linda Nuechterlein |
| 10/6/2000 |
Update or Other Action |
SVE system started up. |
Bill Petrik |
| 11/16/2000 |
Document, Report, or Work plan Review - other |
Reviewed the Alaska Complete Tank "July Water Quality Report" dated 11/14/00. Field activities occurred 8/21 and 8/22/00. GW levels fell markedly since the June 2000 sampling event. Depth to GW from this event varied from 11.65' bgs at MW-7 to 15.81' bgs at MW-3. GW flow direction was WSW at 0.028 ft/ft. Lab analyses were performed on samples from MWs 1 thru 11 for GRO and BTEX. MW-1 had exceedances for GRO, benzene, toluene, and ethylbenzene. MW-3 had exceedances fro GRO and BTEX. MW-6 had exceedances fro GRO, benzene, and toluene. The report review date was actually 12/3/09 but put here as the date the department revceived it for chronology purposes. |
Bill Petrik |
| 11/29/2000 |
Update or Other Action |
Alaska Complete Tank (consultant) sent letter report on remediation system startup. |
Linda Nuechterlein |
| 12/13/2000 |
Update or Other Action |
Received the Alaska Complete Tank "2000 Annual Water Quality Report" dated 12/11/00. GW elevations rose up to 8' in May compared to February then dropped in August and October but to levels approximately equal to or up to ~2.5' higher than May levels. Contaminant levels generally dropped in MWs 1 3, and 6. They went to ND in MWs 7, 9, 10, and 11. However, they appeared in MWs 2 and 8 where they were not formerly detected. Contaminants still above cleanup levels in MWs 1, 2, 3, 6, and 8. GW flow direction varied up to 38 degrees between west and SW and the gradient ranged from 0.16 to 0.52 ft/ft. |
Linda Nuechterlein |
| 9/6/2001 |
Document, Report, or Work plan Review - other |
Received the Alaska Complete Tank "March and June 2001 Water Quality Report" dated 9/5/01. GW monitoring wells were sampled 2/28/01 and 3/2/01 for the first event of the year and on 6/11-14/01 for the second event of the year. GW levels dropped approximately 4 feet in MWs between the 10/00 GW sampling event and the 2/01 event. Depth to GW from the Feb./March event varied from 15.92' bgs at MW-7 to 17.88' bgs at MW-6. Depth to GW from the June event varied from 12.11' bgs at MW-8 to 16.08' bgs at MW-3. GW flow direction was west for both events at 0.021 ft/ft for the March event and 0.034 ft/ft for the June event. Lab analyses were performed on samples from MWs 1 thru 11 for GRO and BTEX except for MW-2 in 3/01, MW-4 for both events because they were dry. MWs 1 and 3 had exceedances for all analytes and MW-6 had exceedances fro GRO, benzene, and toluene. The report review date was actually 12/4/09 but put here as the date the department received it for chronology purposes. |
Lynne Bush |
| 5/31/2002 |
Update or Other Action |
Site transferred to staff Amanda Dreyer. |
Lynne Bush |
| 6/14/2002 |
Document, Report, or Work plan Review - other |
Reviewed the Alaska Complete Tank "2001 Annual Water Quality Report" received by the program on 3/15/02. Sent a letter requesting continued quarterly groundwater monitoring.
Field activities that occurred 9/21/01 indicated that GW levels were similar to those measured in June 2001. GW flow direction was WNW at 0.024 ft/ft. Lab analyses were performed on samples from MWs 1 thru 11 for GRO and BTEX. MW-1 had exceedances for all analytes, MW-3 and MW-6 had exceedances for GRO, benzene, toluene, and ethylbenzene, and MW-8 exceeded the benzene cleanup level.
Field activities that occurred 12/20/01 indicated that GW levels were similar to those measured in Sept. 2001. GW flow direction was WNW at 0.026 ft/ft. Lab analyses were performed on samples from MWs 1 thru 11 for GRO and BTEX. MW-1 had exceedances for GRO, benzene, toluene, , MW-3 for GRO, benzene, toluene, and ethylbenzene, MW-6 had exceedances for GRO, benzene, and toluene, and MW-8 exceeded the benzene cleanup level.
Action appended by Petrik on 12/4/09. |
Amanda Dreyer |
| 9/18/2002 |
Document, Report, or Work plan Review - other |
Reviewed the Alaska Complete Tank "March and June 2002 Water Quality Report" received by the program on 9/6/02. Sent a letter requesting continued quarterly groundwater monitoring.
Field activities that occurred 3/28/02 indicated that GW levels were approximately 1' lower than the Dec. 2001 levels. GW flow direction was NW at 0.035 ft/ft. Lab analyses were performed on samples from MWs 1 thru 11 for GRO and BTEX except for MW-2, MW-7, and MW-11 which were dry. MW-1 had exceedances for all analytes, MW-3 had exceedances for GRO, benzene, and toluene, MW-6 had exceedances for GRO, and benzene, and MW-8 exceeded the benzene cleanup level.
Field activities that occurred 6/26/02 indicated that GW levels were 2-6' higher than those measured 3/2//02. GW flow direction was SW at 0.045 ft/ft. Lab analyses were performed on samples from MWs 1 thru 11 for GRO and BTEX. MW-1 and MW-6 had exceedances for GRO and benzene.
Action appended by Petrik on 12/4/09. |
Amanda Dreyer |
| 1/10/2003 |
Update or Other Action |
SVE system turned off. |
Bill Petrik |
| 6/6/2003 |
Document, Report, or Work plan Review - other |
Reviewed the Astro Environmental Services "2002 Annual Water Quality Report for Pink Elephant Car Wash/Chevron" dated 5/19/03 and received by the program 5/20/03. A request for NFRAP Status was denied in a letter sent by the CSP this date. GW sampling frequency was reduced from quarterly to semi-annually with the next sampling to occur 9/03 and 3/04. Only sample MWs 1, 3, 6, 8, and 9 for DRO, GRO, and BTEX and continue measuring water levels in all wells. Reports due 60 days after the sampling event. The CSP requests that the MWs not sampled remain in place in the event they may need to be sampled in the future. The CSP also requests that because the SVE is inactive that it still remain in place in the event it may be needed in the future.
Field activities that occurred 9/22/02 indicated that GW levels were mixed and generally within a foot of where they were measured in June 2002. GW flow direction was SW at 0.042 ft/ft. Lab analyses were performed on samples from MWs 1 thru 11 for GRO and BTEX. MW-1 had exceedances for GRO and benzene, MWs 3, 6, and 8 had exceedances for benzene.
Field activities that occurred 1/3/03 indicated that GW levels were mixed and generally within a foot of where they were measured in Sept. '02. GW flow direction was slightly north of west at 0.03 ft/ft. Lab analyses were performed on samples from MWs 1 thru 11 for GRO and BTEX. MWs 1, 3 and 6 had exceedances for GRO and benzene.
Action appended by Petrik on 12/4/09. |
Amanda Dreyer |
| 11/17/2003 |
Update or Other Action |
Cost Recovery letter sent to RP. |
Amanda Dreyer |
| 5/6/2004 |
Document, Report, or Work plan Review - other |
Reviewed the Astro Environmental Services "September 2003 Water Quality Report for Pink Elephant Car Wash/Chevron" dated 1/25/04 and received by the program 1/26/04. Field activities that occurred 9/24-25/03 indicated that GW levels were approximately 1-2' lower than the Jan. 2003 levels. GW flow direction was WNW at 0.033 ft/ft.
Lab analyses were performed on samples from MWs 1, 3, 6, 8, and 9 for GRO and BTEX. MW-1, MW-3, and MW-6 had exceedances for GRO, benzene, and toluene; MW-8 exceeded the benzene cleanup level.
This report indicates an increase in groundwater contaminant levels for petroleum constituents since the last sampling event when the air-sparging system was turned off in January 2003. On average the contaminants increased to four times the levels of the previous sampling event. Monitoring well MW-6 showed the greatest increase in contaminant concentrations since the last sampling event: benzene was 6.9 mg/l, up from 1.2 mg/l; toluene was 1.2 mg/l up from 0.32 mg/l and GRO was 24.0 mg/l up from 3.3 mg/l.
As discussed in the letter from the CSP dated June 6, 2003, the CSP requests that semi-annual groundwater monitoring continue until contaminant levels in the groundwater are verified to be below applicable cleanup levels. Please note that our June 6th letter requested monitor wells 1,3,6,8, & 9 be sampled for benzene, toluene, ethylbenzene, total xylenes, DRO, and GRO. Lab samples taken during the September 2003 sampling event were not analyzed for DRO as requested in the June 6th letter. Unless otherwise indicated by DEC, the department requests groundwater monitoring continue in these wells for the previously mentioned constituents until groundwater trends indicate contaminants are below applicable cleanup levels. The rebound of contaminant levels in groundwater is anticipated when an air-sparging system is deactivated. The CSP may request the air-sparging system be reactivated if trends established from future groundwater monitoring events indicate that further benefit may be gained by reactivating the system.
Action appended by Petrik on 12/4/09. |
Eric Henry |
| 4/8/2005 |
Update or Other Action |
Letter sent to Owen Johnson requesting current status of the site. DEC has not received any groundwater monitoring reports since 1/25/04 which was for the September 2003 monitoring event. DEC requested continued monitoring and any reports since the September 2003 report. |
Eric Henry |
| 5/17/2005 |
Document, Report, or Work plan Review - other |
The CSP sent a letter sent in response to review of the Astro Environmental Service "March 2004 Water Quality Report" dated and received by the program on 5/25/04, and requested GW sampling reduction from semi-annual to annually in the spring of '05. DRO can be eliminated from the contaminants sampled for thus leaving only GRO and BTEX for sampling. The subject report was submitted a second time on 4/21/05.
Field activities that occurred 3/26/04 indicated that GW levels generally rose 1.5' since the 9/24/03 monitoring event. GW flow direction was slightly north of west at 0.032 ft/ft. Lab analyses were performed on samples from MWs 1, 3, 6, 8, and 9 were sampled for GRO and BTEX. MW-1 had exceedances for for GRO, benzene, and toluene; MWs 3 and 6 had exceedances for GRO and benzene; and MW-8 exceeded the benzene cleanup level.
Action appended by Petrik on 12/4/09. |
Eric Henry |
| 5/23/2005 |
Update or Other Action |
A letter was sent to the RP this date after a teleconference between ADEC staffs Henry and Frechione and the RP and his consultant to summarize and document the meeting results. It was agreed that only MWs 1, 6 and 8 will now be sampled. they will all be sampled for GRO and BTEX. the frequency will be MWs 6 and 8 annually and MW-1 every other year. MWs not currently scheduled for sampling will remain in the ground in the event they made be utilized in the future. |
Eric Henry |
| 8/25/2005 |
Document, Report, or Work plan Review - other |
The CSP sent a letter this date after review of the Astro Environmental Services, Inc. "June 2005 Ground Water Report for Pink Elephant Car Wash/Chevron" dated 8/17/05, received by the program 8/18/05. MW-6 had a decrease in benzene levels and an increase in other BTEX constituents since the last monitoring event on 3/26/04. MWs 6 and 8 will continue to be monitored every year and MW-1 every other year, respectively, for GRO and BTEX.
Field activities that occurred 6/20/05 indicated that GW levels were mixed since the 3/26/04 monitoring event. Some wells levels barely changed while most rose by 0.5'. Some rose 1', 1.5', or one as much as 2'. GW flow direction was slightly south of west at 0.034 ft/ft. Lab analyses were performed on samples from MWs 6 and 8 and were sampled for GRO and BTEX. MW-6 had exceedances for for benzene and toluene.
Action appended by Petrik on 12/4/09. |
Bill Petrik |
| 10/4/2005 |
Update or Other Action |
Project manager changed from Eric Henry to Rich Sundet. |
Sarah Cunningham |
| 3/14/2006 |
Update or Other Action |
Staff changed from Sundet to Petrik. |
Bill Petrik |
| 5/22/2006 |
Update or Other Action |
Latitude and longitude data gathered from TopoZone Pro Hi-Res Aerial Photo, Large Size Map, 1:3,333 Scale, No Topo Base Map, NAD 83 in conjunction with Anchorage Area Atlas and Figure 1 - Monitoring Well Locations and Ground Water Flow, from the consultant Alaska Complete Tank report "Continued Release Investigation for Pink Elephant Car Wash/Chevron, 8215 Old Seward Highway, Anchorage, Alaska" dated 4/2/00. High degree of confidence in accuracy of coordinates. |
Bill Petrik |
| 9/19/2006 |
Update or Other Action |
Updated the initial AHRM. Changed the value for Surface Water Environments Score from 0 to 2 because Little Campbell Creek is within 1/4 mile of the site. The resulting score remains High Priority and went from 117 to 135. |
Bill Petrik |
| 10/11/2006 |
Document, Report, or Work plan Review - other |
Sent a letter in response to review of the Astro Environmental Services, Inc. "June 2006 Groundwater Monitoring Report", dated 9/11/2006, received 9/12/06. Field activities that occurred 6/28/06 indicated that all but one GW level fell between 0.5' and 2' since the 6/20/05 monitoring event. The contrary well rose nearly 1'. GW flow direction was WSW at 0.051 ft/ft. GRO and BTEX was sampled for in MWs 1, 3, 6, and 8 except MW-8 was not sampled for GRO due to a consultant oversight. MW-3 was sampled but did not have to be. GRO was above cleanup level in MWs 3 and 6. Benzene was above cleanup level in all four MWs sampled. Toluene was above cleanup level in MW-6. Ethylbenzene was above cleanup level in MW-6. Total xylenes were above cleanup level in MW-6. ADEC requests annual groundwater monitoring continue in monitor wells MW-6 and MW-8, and every other year at MW-1 (i.e., 2008, 2010, etc.) until contaminant levels in the groundwater are verified to be below applicable cleanup levels. The contaminants to be analyzed for are GRO and BTEX. |
Bill Petrik |
| 5/15/2007 |
Exposure Tracking Model Ranking |
Initial ranking. |
Bill Petrik |
| 5/16/2008 |
Update or Other Action |
The Contaminated Sites Program sent a letter regarding review of the Astro Environmental, Inc "July 2007 Groundwater Monitoring Report" dated 8/30/07, received 8/31/07. Field activities that occurred 7/1/07 indicated that all GW levels rose between 1' and 4.5' since the 6/28/06 monitoring event. GW flow direction was west at 0.058 ft/ft.
GRO, benzene and toluene were detected in ground water analytical sample results above cleanup levels in MW-6. Consequently, ADEC requests continued annual groundwater monitoring in monitoring wells MW-6 and MW-8, and every other year at MW-1 (i.e., 2008, 2010, etc.) until contaminant levels in the groundwater are verified to be below applicable cleanup levels as outlined in the 10/11/06 letter from the CSP. The contaminants to be analyzed for are GRO and BTEX. |
Bill Petrik |
| 7/1/2009 |
Document, Report, or Work plan Review - other |
The CSP reviewed a copy of the Astro Environmental, Inc "August 2008 Groundwater Monitoring Report" dated 10/30/08, received 10/31/08. Field activities that occurred 8/30/08 indicated a mix a water levels. Most GW levels rose except for 3 wells, one which was virtually unchanged while 2 fell 0.3' and 2.5', respectively. GW flow direction was WNW at 0.046 ft/ft. Groundwater levels are at or near all time highs and the flow direction continued in a general west-northwest direction. Groundwater sampling results from monitoring well MW-6 continued to exceed GRO and benzene cleanup levels. Reduction in some contaminant concentrations may be due to GW levels being at or near all time high levels. The CSP sent a letter this date that requested continued groundwater monitoring of wells MW-1, MW-6, and MW-8, the former well biannually and the later wells annually, for GRO and BTEX. The letter also suggested sampling MW-6 for PAHs since they have not previously been sampled for in either soil or GW. |
Bill Petrik |
| 10/20/2009 |
Update or Other Action |
Received a copy of the Astro Environmental Services "August 2009 Groundwater Monitoring Report" dated October 19, 2009. |
Bill Petrik |
| 12/14/2009 |
Conceptual Site Model Submitted |
The Astro Environmental Services, Inc. "Conceptual Site Model Human Health Scoping Form and Graphic" received this date. |
Bill Petrik |
| 1/8/2010 |
Meeting or Teleconference Held |
Met with Chris Hawe of Astro Environmental Services in a department conference room and discussed utility location, site history, infrastructure, site issues, MW construction, risk evaluation, Method 3 Calculator and Cumulative Risk, SVE system, GW elevation data, GW intrusion from car wash operations, GW monitoring, etc. Mr. Hawe requested the CSP present an outline to him and the responsible party of future goals and site requirements to work towards achievement. |
Bill Petrik |
| 4/29/2010 |
Document, Report, or Work plan Review - other |
The CSP sent a letter to the RP requesting submittal of a work plan for further site characterization and monitoring. The request was in response to the review of the last three report submittals from Astro Environmental Services, Inc.: “August 2009 Groundwater Monitoring Report”, dated 10/19/09; “Naphthalene Analyses for Ground Water” dated 11/19/09; and “Conceptual Site Human Health Scoping Form and Graphic” dated 12/14/09 to the CSP as well as a meeting held with the site consultant on 1/8/10 to discuss site issues and requested a determination of what future work was expected of the site. The work plan requested numerous tasks. These included a boring and MW installation down-gradient to determine whether a saturated zone at 35' bgs is contaminated. Soil sampling of the boring was requested for GRO, DRO, and BTEX. Further GW sampling of new and existing monitoring wells for GRO, DRO, and BTEX was also requested that included three MWs that have not been sampled for years in an attempt to verify and confirm the extent of GW contamination and adding sampling for DRO which was suspended years ago despite DRO sampling results above GW cleanup levels. Air samples from soil near the exit of the car wash were requested to quantify potential vapor intrusion. An updated CSM Narrative, and consideration of restarting the SVE system were also requested. |
Bill Petrik |
| 11/1/2011 |
Update or Other Action |
ADEC contacted RP to schedule a teleconference. RP has not contacted ADEC. |
Grant Lidren |
| 1/20/2012 |
Update or Other Action |
On this date, ADEC sent a letter to Pink Elephant requesting a teleconference with Pink Elephant and Astro Environmental. |
Grant Lidren |
| 5/22/2012 |
Meeting or Teleconference Held |
On this date, ADEC held a teleconference with Astro Environmental and Pink Elephant Carwash. ADEC requested further action at the Pink Elephant Car Wash including analyzing MW-2, MW-3, MW-5, MW-6, and MW-10 for GRO and BTEX. The objective is to establish a stable or decreasing trend in the groundwater and to verify remaining contamination is confined within the property. |
Grant Lidren |
| 8/14/2012 |
Document, Report, or Work plan Review - other |
ADEC recieved workplan submitted by Astro environmental to analyze MWs: MW-2, MW-3, MW-5, MW-6, and MW-10 for GRO and BTEX. |
Grant Lidren |
| 10/1/2012 |
Site Characterization Report Approved |
On this date, ADEC received the August 2012 Ground water Monitoring Report for Pink Elephant Car Wash sumitted by Astro Environmental, dated September 30, 2012. Groundwater was sampled from MWs: MW-2, MW-3, MW-5, MW-6, and MW-10 and analyzed for GRO and BTEX. Only two of the monitoring wells, MW-3 and MW-6, contained detectable concentrations of contaminants. MW-3 contained benzene at 0.326 mg/L and GRO at 2.45 mg/L. MW-6 contained benzene at 4.270 mg/L and GRO at 12.4 mg/L. |
Grant Lidren |
| 4/16/2013 |
Document, Report, or Work plan Review - other |
On this date, ADEC approved the Work Plan for Monitoring Well and Remediation System Decommissioning Pink Elephant Car Wash, submitted by Astro Environmental, dated April 16, 2013. The 11 onsite MWs and remediation system will be decomissioned by the end of July 2013. |
Grant Lidren |
| 7/14/2013 |
Update or Other Action |
On this date, ADEC recieved the Completion of Monitoring Well and Remediation System Decommissioning Pink Elephant Car Wash/Chevron submitted by AES dated July 14, 2013. The 11 onsite MWs and remediation system were decommissioned to the best extent practicable. The casing for monitoring well MW-8 broke leaving 10 feet of casing in the ground; all other MWs were decommissioned without any issues. Some of he SVE system pipes were removed where practicable and some were left in the ground and filled with bentonite. |
Grant Lidren |
| 10/8/2013 |
Cleanup Complete Determination Issued |
The Alaska Department of Environmental Conservation (ADEC) has reviewed the environmental records for the Pink Elephant Car Wash. Based on the site history and cleanup actions, no further remedial action will be required as long as the site is in compliance with institutional controls. |
Grant Lidren |
| 10/8/2013 |
Institutional Control Record Established |
Institutional Controls established and entered into the database. |
Grant Lidren |
| 10/8/2013 |
Update or Other Action |
CC-IC agreement recieved from Pink Elephant representative. |
Grant Lidren |
| 10/30/2013 |
Update or Other Action |
Timmons & Larson, Inc is the new land owner of the property as of October 30, 2013 |
Grant Lidren |
| 11/19/2013 |
Update or Other Action |
On this date, ADEC received a signed CC-IC agreement from the current landowner Timmons & Larson Inc. |
Grant Lidren |
| 10/7/2014 |
Institutional Control Compliance Review |
IC compliance review conducted and staff changed from Grant Lidren to IC Unit. Reminder system set to follow-up with the responsible party in 2018. |
Kristin Thompson |
| 3/17/2016 |
Update or Other Action |
Based off the proposed 2015 changes to cleanup levels, groundwater at this site contains additional VOCs above cleanup levels. From the latest sampling event in 2012, MW-6 contains ethylbenzene at 0.494 mg/L and total xylenes at 1.086 mg/L. |
Grant Lidren |
| 11/1/2018 |
Institutional Control Compliance Review |
An ICs verification letter was issued to the responsible party/landowner on this date. |
Mossy Mead |
| 6/13/2024 |
Institutional Control Compliance Review |
Landowner updated. IC compliance review completed on this date. An IC reminder letter was issued to the new landowner. The next review will be in five years’ time. |
Gaige Robinson |
| 10/15/2024 |
Institutional Control Update |
Tanks #6 & 7 were removed from this facility in late summer 2024. A new site record was created for those tanks which is hazard ID 27973. At the same time a vehicle vacuum system was installed which required excavation, but was not in the area of the historic 1999 tanks. That area is covered with concrete and has not been touched. |
Evonne Reese |
