| Action Date |
Action |
Description |
DEC Staff |
| 7/22/1999 |
Update or Other Action |
Soil excavation of 100 cubic yards before July 14, 1999. Additional 50 cubic yards excavated on July 21-22, 1999. All 150 cubic yards stockpiled at the O'Brien Construction's equipment yard. |
Shah Alam |
| 8/27/1999 |
Notice of Violation |
Notice of Violation and Request for Corrective Action issued by Jim Frechione. |
Shah Alam |
| 9/9/1999 |
Update or Other Action |
Restoration Science and Engineering representing O'Brien Construction submitted site status and preliminary site contamination data. |
Shah Alam |
| 9/22/1999 |
Site Added to Database |
By staff. Diesel contamination. |
Shah Alam |
| 9/23/1999 |
Update or Other Action |
Alam requested final laboratory analysis data and a work plan for stockpiled soil. |
Shah Alam |
| 11/30/1999 |
Update or Other Action |
ADEC received a report titled "Heating Oil UST Site Assessment" from the Restoration Science and Engineering. |
Shah Alam |
| 12/9/1999 |
Site Ranked Using the AHRM |
Initial ranking. |
Shah Alam |
| 12/10/1999 |
Update or Other Action |
Staff wrote O'Brien Construction asking to characterize the contaminated ground water and to remediate contaminated soil stockpile. Staff also requested additional information regarding the contaminated soils remaining under the building foundation. |
Shah Alam |
| 7/26/2000 |
Update or Other Action |
ADEC project manager, Shah Alam, visited the site. |
Shah Alam |
| 8/16/2000 |
Cleanup Plan Approved |
Staff approved a cleanup workplan. The workplan involves additional site characterization and landfarming of stockpiled contaminated soils (150 cubic yards). |
Shah Alam |
| 1/12/2001 |
Update or Other Action |
Received Site Assessment and Soil Remediation report, prepared by Restoration Science and Engineering. |
Scott Pexton |
| 1/19/2001 |
Meeting or Teleconference Held |
Scott Pexton, Shah Alam and Jim Frechione met with David Nyman and Simon Evans of Restoration Science and Engineering to discuss the Site Assessment and Soil Remediation report. |
Scott Pexton |
| 1/26/2001 |
Long Term Monitoring Established |
Letter sent to Simon Evans of Restoration Science and Engineering with ADEC approval to sample the Kuskokwim Inn drinking water well (currently inactive), monitor water elevations quarterly and collect at least one more round of water samples at monitoring wells MW-1 through MW-4 and collect soil samples in August 2001 to evaluate the performance of the on-site soil treatment cell. ADEC requested a report summarizing monitoring and sampling activities be submitted by the end of January 2002. |
Scott Pexton |
| 3/20/2001 |
Update or Other Action |
Received a Summer 2001 Work Plan prepared by Restoration Science and Engineering. Also, received a letter from Restoration Science and Engineering with proposed alternative cleanup levels for DRO in soil. Proposed ACL is 887 mg/kg based on a Method 3 approach with proposed modifications to default parameters for hydraulic gradient, hydraulic conductivity, fraction of organic carbon, and source length. |
Scott Pexton |
| 4/20/2001 |
Cleanup Level(s) Approved |
ADEC concurs with the proposed modifications to equation parameters used for calculating the method three soil cleanup level for DRO at the Kuskokwim Inn site. In accordance with 18 AAC 75.340 (e), ADEC approves an alternative soil cleanup level for DRO at 887 mg/kg for the migration to groundwater pathway. |
Scott Pexton |
| 4/20/2001 |
Update or Other Action |
Letter sent to David Nyman of Restoration Science and Engineering with cleanup plan approval. The plan describes the following tasks to be undertaken during the summer 2001 field season: Till soil in the treatment cell three times per week for the first three weeks with an agricultural or hand tiller beginning in late April or early May extending through early June 2001; Continue to till soil once per week through the end of August 2001; Dewater sump in treatment cell as needed and store pumped water in a portable tank on site until arrangements are made for proper disposal; Plant grass on soil in the treatment cell during August; Collect 60 samples for field-screening using a photo-ionization detector (PID); Based on the highest PID readings, analyze six soil samples for GRO/BTEX using AK101EPA 8021B and for DRO/RRO using AK102/103. |
Scott Pexton |
| 6/7/2001 |
Update or Other Action |
Received faxed letter from Restoration Science and Engineering with request for modifications to Summer 2001 work plan. |
Scott Pexton |
| 6/11/2001 |
Update or Other Action |
Letter sent to David Nyman of Restoration Science and Engineering with ADEC approval of proposed modifications to 2001 cleanup plan. The modified plan describes the following tasks: Collect 40 samples for field-screening using a photo-ionization detector (PID) from the upper eight inches of approximately 100 cubic yards of soil in the treatment cell; Collect three closure samples plus one QA/QC duplicate sample (for DRO/RRO and GRO/BTEX analysis) from the soil locations that yield the highest PID readings; Seek ADEC approval before removal or disposal of treated soil; Continue to till impacted soil until closure samples are obtained. |
Scott Pexton |
| 6/14/2001 |
Update or Other Action |
Received letter report from Restoration Science and Engineering with groundwater sampling results from monitoring wells and an unused private drinking water well. Non-detectable concentrations were reported for all constituents in the drinking water well which was sampled for GRO/BTEX, DRO/RRO, PAH SIMS, VOCs, nitrates/nitrites, and total coliform. Of the five monitoring wells, three were sample as MW-1 did not have sufficient recharge within 24 hours and MW-4 was frozen. Lab results reported DRO at 17.2 mg/L and benzene at 0.0067 mg/L from MW-5; MW-2 and MW-3 had non-detectables for GRO/BTEX and DRO/RRO. |
Scott Pexton |
| 7/19/2001 |
Update or Other Action |
Received letter report from Restoration Science and Engineering with soil laboratory results from samples collected from the upper 6 to 8 inches of the landfarmed soil. Samples were selected for lab analysis based on field screening results (PID) and result of the four samples ranged from 114 to 200 mg/kg DRO. GRO and BTEX were undetected. Letter requested permission to spread the treated soil on site. |
Scott Pexton |
| 7/26/2001 |
Update or Other Action |
Received letter from Restoration Science and Engineering with proposed sampling plan for approximately 75 cubic yards of petroleum impacted soil remaining in the landfarming treatment cell. |
Scott Pexton |
| 7/31/2001 |
Update or Other Action |
Letter sent to David Nyman of Restoration Science and Engineering with ADEC approval of sampling results and request to spread onsite the treated soil removed from upper six to eight inches of the treatment cell. Letter also included ADEC approval of sampling plan for remaining petroleum impacted soil in the treatment cell. |
Scott Pexton |
| 9/27/2001 |
Update or Other Action |
Received letter report from Restoration Science and Engineering with confirmation soil sampling results of landfarm treated soil from then remediation treatment cell. GRO/BTEX and RRO met method two cleanup levels. DRO ranged from 341 to 675 mg/kg, which met the approved method three alternative cleanup levels of 887 mg/kg. |
Scott Pexton |
| 9/28/2001 |
Update or Other Action |
Received letter report from Restoration Science and Engineering with groundwater monitoring results. DRO, RRO, and benzene at 18.5, 1.19, and 0.007 mg/L, respectively reported in groundwater sample from MW-5. Other four wells reported as undetected. |
Scott Pexton |
| 10/4/2001 |
Update or Other Action |
Received confirmation sample lab data sheets. Letter sent to David Nyman of Restoration Science and Engineering with approval to dispose the treated soil onsite in a non-environmentally sensitive area with the following conditions: (1.) The treated soil must be placed at the site within the property boundaries of Lot 5, Block 15, U.S. Survey Number 3230B, Townsite of Bethel, Alaska; and,
(2.) After placement of the treated soil within Lot 5, the soil shall not be moved to another location unless prior ADEC approval is obtained in accordance with 18 AAC 75.325 (i). |
Scott Pexton |
| 1/17/2002 |
Update or Other Action |
Letter received from Restoration Science & Engineering with groundwater monitoring results and a request for No Further Remediation Planned. Monitoring wells MW-1 through MW-4 show hydrocarbon levels as undetectable. Monitoring well MW-5 (sampled in August 2000, May 2001, and August 2001) had DRO at concentrations ranging from 16 to 18 mg/L at every sampling event; benzene reported at 0.007 mg/L during August 2001. Letter also indicated that the previously treated soil had been spread within the property boundaries at the location where it had been treated. |
Scott Pexton |
| 2/19/2002 |
Update or Other Action |
Letter received by ADEC from the Department of Law indicating that a cost recovery check was received from the Brotherton Disbursement Account (Bill #CO25090). |
Scott Pexton |
| 4/15/2002 |
Site Ranked Using the AHRM |
Site reranked based on information in Restoration Science & Engineering groundwater monitoring reports. Groundwater usage value changed from 0.4 to 0.8. |
Scott Pexton |
| 5/29/2002 |
Cleanup Level(s) Approved |
See Record of Decision. The applicable groundwater cleanup levels are 1.5 mg/L for DRO, 1.1 mg/L for RRO, and 0.005 mg/L for benzene. |
Scott Pexton |
| 5/29/2002 |
Institutional Control Record Established |
See Record of Decision. |
Scott Pexton |
| 5/29/2002 |
Record of Decision |
ADEC DECISIONS: Institutional Controls Required.
A to ensure compliance with the applicable alternative soil cleanup level. A potential exists that some contaminated soil remains under or in close proximity to existing buildings in the vicinity of the former tank location. If buildings are removed in the future, DRO or benzene contaminated soil may be encountered and should be characterized and managed in accordance with the site cleanup rules. Also, groundwater in the vicinity of monitoring well MW-5 contains residual concentrations of DRO and benzene that exceed the applicable groundwater cleanup levels provided in Table C at 18 AAC 75.345. The institutional control will consist of a Notice of Environmental Cleanup that must be recorded in the State of Alaska Bethel District Recording Office. The Notice will describe the areas with known or potential residual contamination in soil and groundwater on the property. In addition, an entry into the ADEC Contaminated Sites Program's database will be made to indicate that an institutional control has been established to require prior approval by ADEC before moving or disposing of soil from the current disposal area to another location.
Long-Term Groundwater Monitoring Required. The applicable groundwater cleanup levels are 1.5 mg/L for DRO, 1.1 mg/L for RRO, and 0.005 mg/L for benzene. Samples collected from monitoring well MW-5 during the most recent sampling event in August 2001 were reported with DRO at 18.5 mg/L, RRO at 1.19 mg/L and benzene at 0.007 mg/L. Monitoring well MW-5 is located less than fifty feet away from a drinking water well that may be used to supply water to hotel customers at the Long House Bethel Inn. At this time, it is unclear how the drinking water well was constructed. The well was drilled to a termination depth of approximately 400 feet and appears to pump water from a confined aquifer that is separated from the shallow groundwater by over 300 feet of permafrost soil. According to Restoration Science & Engineering, the substantial stratigraphic separation between the two aquifers indicate that shallow groundwater from MW-5 cannot impact the confined aquifer drinking water source.
However, it appears that the drinking water well does not have the necessary and required permits to construct or operate the well as a Class B Public Water System. Therefore, in accordance with 18 AAC 75.345 (h), the ADEC Contaminated Sites Program has determined that long-term monitoring is required. The drinking water well and three of the existing monitoring wells must be sampled at least twice per year and accurate water elevations measured at the three monitoring wells. The monitoring program shall continue until ADEC makes a determination that there is a stable or decreasing trend in contaminant concentrations. The ADEC Contaminated Sites Program requests submittal of a groundwater monitoring plan. The plan must describe how semi-annual sampling of the drinking water well and monitoring wells MW-1, MW-2 and MW-5 will be conducted during 2002. Groundwater samples must be collected by a qualified person and analyzed for DRO/RRO using AK methods 102/103 and for benzene using EPA Method 8021 or another method approved by ADEC. After one year of monitoring, ADEC will evaluate the results to interpret if a concentration trend is increasing, decreasing, or stable. The ADEC Drinking Water Program may have additional requirements with respect to the drinking water well.
Monitoring Well Decommissioning Required
Under 18 AAC 75.345 (j), groundwater must be installed, developed, and decommissioned in accordance with the department's Recommended Practices for Monitoring Well Design, Installation, and Decommissioning, or another approved method. Any well installed that is unusable or impractical to use should be decommissioned.
ADEC has determined that monitoring wells MW-3 and MW-4 are no longer needed for monitoring purposes and may be unusable or impracticable to use. Therefore, a qualified person should properly decommission these two monitoring wells during 2002. ADEC requests submittal of a report that describes the methods used to decommission monitoring wells MW-3 and MW-4. |
Scott Pexton |
| 8/1/2002 |
Update or Other Action |
ADEC project management transferred from Scott Pexton to Jim Frechione |
Scott Pexton |
| 8/6/2004 |
Update or Other Action |
Groundwater monitor report was submitted by Restoration Science & Engineering. GW samples were collected on June 26, 2004 from MW 1, 2 nad 5. MW 5 had DRO (13 mg/l) and benzene (7.5 mg/l) above Table C levels. The drinking water well was also sampled and detected low levels of DRO (0.13 mg/l) and RRO (0.3 mg/l) which was attributed to naturally occurring organics versus fuel. Two wells were decommissioned (MW 3 and 4).
GW sampling will continue on a semi-annual basis as required by the ROD. |
Jim Frechione |
| 11/8/2005 |
Update or Other Action |
Project manager changed from Frechione to Horwath, and file transferred to Soldotna. |
Sarah Cunningham |
| 11/22/2005 |
GIS Position Updated |
Using Figure 1 from a Site Assessment and Soil Remediation Kuskokwin Inn, Bethel, Lot 5 Block 15, U.S. Survey No. 3230B Townsite of Bethel, from Bethel Boys, LLC, dated December 2000, in conjunction with TopoZone Pro, entered the coordinates for this site. Metadata includes USGS Topo Map 1:63K, TopoZone Pro Street Maps, Black and White Aerail Photo, on a Medium Size Map, View Scale 1:24,000, Coordinated Datum NAD83. Moderate to High degree of confidence in accuracy of location. |
Alyce Hughey |
| 11/22/2005 |
Update or Other Action |
Project manager changed from Horwath to Seagren. |
Alyce Hughey |
| 11/23/2005 |
Update or Other Action |
Reviewed file & ROD. Called consultant for project update. Have not received certified copy demonstrating that the deed notice has been filed in the recorders office. The ROD required submission of a LTM plan and sampling twice a year to establish contaminant trends. Have only received a single monitoring report dated 28 July 04. |
Donald Seagren |
| 11/29/2005 |
Update or Other Action |
reviewed fiel & reports. ROD required a deed notice be attached to the property deed and a twice yearly LTM program be established. The file contains no documentation that either condition of the ROD has been complied with. Sent a letter to the RP requesting project status update and documentation that the conditions in the ROD have been complied with. CCd the consultant, Restoration Science & Engineering. |
Donald Seagren |
| 5/5/2006 |
Update or Other Action |
Reviewed the file and sent a second letter requesting copy of filed deed notice and LTM data or work plan required by ROD. Have received no response to intial letter sent on 29 November 05. |
Donald Seagren |
| 11/17/2006 |
Update or Other Action |
Sent a revised project status request letter and ROD to the current point of contact after hearing nothing from the previous RP |
Donald Seagren |
| 4/12/2007 |
Exposure Tracking Model Ranking |
|
Donald Seagren |
| 6/11/2008 |
Update or Other Action |
On 6-30-08 Transferred from Paul Horwath to Don Fritz per Paul Horwath. |
Alyce Hughey |
| 5/29/2009 |
Update or Other Action |
Site Transferred from Soldotna to Anchorage 6-1-09. |
Alyce Hughey |
| 1/24/2011 |
Update or Other Action |
As a follow up on phone conversation with Mr. Paul O'Brien, I contacted KRK Management again to discuss monitoring well decommissioning as an institutional control of the closure letter that is being drafted. |
Pam Clemens |
| 1/24/2011 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 74181 name: heating oil UST |
Pam Clemens |
| 1/24/2011 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 74181 heating oil UST. |
Pam Clemens |
| 2/23/2011 |
Update or Other Action |
Sent site diagram to hotel manager. He will verify if there are remaining groundwater monitoring wells that need to be removed and will submit a workplan for the upcoming field season if necessary. |
Pam Clemens |
| 4/13/2011 |
Cleanup Complete Determination Issued |
ADEC has determined that while the soil contamination remaining on site exceeds the most stringent migration to groundwater cleanup levels it does not pose an unacceptable risk to human health or the environment. The remaining contamination is separated vertically from the drinking water well by over 300 feet of permafrost, it is not expected to impact the drinking water well on site. No further remedial action is required, and the site can be closed subject to institutional controls listed in the decision document concerning this site. Refer to the decision document attached to the database for the specific institutional controls. |
Pam Clemens |
| 1/31/2012 |
Update or Other Action |
Signed CC-IC Agreement received on this date |
Grant Lidren |
| 6/13/2012 |
Update or Other Action |
Staff changed from Grant Lidren to IC Unit. |
Kristin Thompson |
| 6/13/2012 |
Institutional Control Compliance Review |
IC review conducted and reminder system set-up for 2016 follow-up with responsible party. |
Kristin Thompson |
| 12/14/2015 |
Institutional Control Compliance Review |
IC compliance review conducted. No documentation that the monitoring well decommissioning IC requirement was ever fulfilled. An IC reminder letter was issued to the responsible party on this date. Reminder system set to follow-up in one month. |
Kristin Thompson |
| 2/1/2016 |
Institutional Control Update |
Telephone conversation with the general management at this hotel. I sent her a copy of the closure document which includes a diagram of the well placement so that she can check to see if the wells are still present. |
Evonne Reese |
| 5/25/2016 |
Institutional Control Update |
Telephone conversation with the general management at this hotel. She and other staff members have looked extensively for the wells shown on the diagram I provided to her a few months ago. They found no indication of wells being present. I am going to assume that the wells were decommissioned in the past at some point. The IC requirement of groundwater monitoring has been removed in the database record. This site is scheduled for a review of the IC compliance in five years time. |
Evonne Reese |
| 8/8/2024 |
Institutional Control Compliance Review |
IC compliance review completed on this date. An IC reminder letter was e-mailed to the landowner. The next review will be in five years’ time. |
Gaige Robinson |
