Division of Spill Prevention and Response

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Site Report: Bentley Trust Property Tax Lot 203


Site Name: Bentley Trust Property Tax Lot 203
Address: 430 Old Steese Hwy, 230 Wedgewood Drive, Fairbanks, AK 99701
File Number: 102.38.139
Hazard ID: 4194
Status: Cleanup Complete - Institutional Controls
Staff: Jim Fish, 9074512117 james.fish@alaska.gov
Latitude: 64.862500
Longitude: -147.693889
Horizontal Datum:


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.


Problems/Comments

Trichloroethene (TCE) contamination historically detected in groundwater. Concentration levels range from about 80 micrograms per liter (ug/L0 to 10 ug/L on Southwestern portion of TL - 203. Source of contamination unknown: groundwater contamination may originate from on-property or off-property sources. See Bentley Trust Tax Lot 201 for historical investigation.



Action Information

Action Date Action Description DEC Staff
12/28/2005 Update or Other Action Alyeska sent PRP letter. Douglas Bauer
1/4/2006 GIS Position Updated GIS using TopoZone Pro Nad 83, and FNSB GIS maps. Tax Lot 203 is comprised of 189 acres. This position is fairly central to the lot and should be updated when more accurate information is available. Kim DeRuyter
1/4/2006 Site Ranked Using the AHRM Preliminary Ranking should be reviewed by project manager. Kim DeRuyter
1/4/2006 Site Added to Database Site added to the database. Kim DeRuyter
1/25/2006 Update or Other Action Received via email monitoring well and remediation system abandonment work plan. Douglas Bauer
1/30/2006 Update or Other Action Received Alyeska's response to 12/28/05 PRP letter. Douglas Bauer
3/3/2006 Meeting or Teleconference Held Telephone conference meeting with Alyeska (Jan Shifflet & Kalu Kalu), SLR Alaska (Mark Stelljes & Scott Rose), J&J Development (Jerry Sadler), Ecology and Environment (Stephanie Pingree & Allison Wiman), Bentley Family Trust (Cynthia Wagner with Union Bank of California), and ADEC (Jim Frechione & Douglas Bauer). The purpose of the meeting was resolution of Tax Lot 201 & Tax Lot 203 risk assessment comments. SLR to follow up with written comments. ADEC to provide policy determination on the use of TCE toxicity values (pre-IRIS or NECA provisonal values) and draft of notice of environmental contamination and land-use restrictions Douglas Bauer
3/6/2006 Update or Other Action Teleconference between Jim Frechione, Douglas Bauer, & Colin Craven with ADEC and Stephanie Pingree with Ecology & Environment to discuss TCE toxicity data issues. Douglas Bauer
3/7/2006 Update or Other Action Received via email SLR Alaska's comments to March 3, 2006 risk assessment resolution meeting from Mark Stelljes. SLR's comments were forwarded to E&E. Douglas Bauer
3/8/2006 Update or Other Action Teleconference between Jim Frechione, Douglas Bauer, & Colin Craven with ADEC and Stephanie Pingree with Ecology & Environment to discuss TCE toxicity data issues. Douglas Bauer
3/8/2006 Update or Other Action Draft notice of environmental contamination and land-use restrictions faxed to Jim Desmond, realtor for J&J Development Douglas Bauer
3/10/2006 Update or Other Action Received via email Ecology and Environment's (E&E)Technical Memorandum about review of SLR Alaska's comments to risk assessment and clarification of TCE toxicity values. E&E's Tech Memo was forwarded to Alyeska , SLR Alaska, and Union Bank of California. Douglas Bauer
3/10/2006 Update or Other Action Jan Shifflett with Alyeska confimed that final risk assessment will be available by March 31, 2006. Douglas Bauer
3/13/2006 Update or Other Action Emailed Cynthia Wagner draft of environmental notice and land-use restrictions for Tax Lot 203. Douglas Bauer
3/15/2006 Update or Other Action Cynthia Wagner called stating that Union Bank of California will have comments about TL-203 notice available at the end of this week. Douglas Bauer
3/17/2006 Update or Other Action Received comments via email from Union Bank of California concerning environmental notice for TL-203. Douglas Bauer
3/31/2006 Update or Other Action Received via email final version of risk assessment. Forwarded to E&E for review. Douglas Bauer
4/12/2006 Update or Other Action Received via email E&E comments on final version of risk assessment. Douglas Bauer
4/17/2006 Update or Other Action Telephone call to Jan Shifflet with Alyeska and forwarded via email E&E's draft comments on final risk assessment. Tentatively scheduled a resolution meeting with SLR this week. Douglas Bauer
4/19/2006 Meeting or Teleconference Held Telephone conference with Scott Rose and Mark Stelljes with SLR Alaska, Stephanie Pingree and Allison Wiman with E&E, and Douglas Bauer to resolve inconsistencies between narrative text and associated tables, and typographical errors in the final version of the risk assessment. SLR Alaska will provide a corrected copy by the week of April 24th. Douglas Bauer
4/28/2006 Update or Other Action Received final comments from E&E concerning risk assessment. E&E recommends approval. Douglas Bauer
5/18/2006 Update or Other Action Telephone call from Cynthia Wagner concerning environmental notice language. UBOC will provide draft language. Douglas Bauer
6/26/2006 Update or Other Action Received report from Alyeska titled "Investigation in Potential Sources and Transport Mechanisms of TCE in Ground Water on Tax Lot 203". Douglas Bauer
6/26/2006 Update or Other Action Approved 2006 ground water sampling plan. Douglas Bauer
7/3/2006 Update or Other Action Sent email to Alyeska proposing two alternatives: additional soil gas collection and modeling at TL-203 and residential monitoring wells or sub-slab sampling per EPA recently released protocol. Douglas Bauer
7/12/2006 Update or Other Action Alyeska agreed to additional soil gas sampling. Alyeska's sampling protocol approved. Douglas Bauer
7/24/2006 Update or Other Action Telephone call from Jan Shifflet. Discussed data gaps concerning the delineation of the extent of ground water contamination on TL-203, and the ramifications to land use redtriction. ADEC proposed a ground water sampling program to delineate the extent of contamination using GeoProbe with field GC. Douglas Bauer
7/24/2006 Meeting or Teleconference Held A meeting was held with Jim Desmond of Desmond Realty and representatives of Fountain Head Development, owners of Wedge Wood Resorts. Fountain Head intends to purchase the western portion of TL-203 (including the two existing gravel pits) and turn the area into a extension of the Creamer's Field Nature Preserve. Fountain Head may build apartments on the western edge of the property at a later date, however the majority of the property will be used as a nature preserve. Fountain Head will need to move some dirt for habitat enhancement and use water from the gravel pit for irrigation purposes for a limited time. Fountain Head will send an email with a list of future uses so any land use restrictions can take them into account. The parties were advised of the email sent earlier today to Alyeska suggesting additional ground water sampling in order to delineate the extent of any ground water contamination. Douglas Bauer
8/2/2006 Update or Other Action Received via email SLR's report titled "Additional Soil Gas Sampling in Support of Human Health and Screening Ecological Risk Assessment for Portions of Tax Lots 201 and Tax Lot 203, Fairbanks, Alaska." Douglas Bauer
8/15/2006 Update or Other Action Telephone conversation and email exchange with Cynthia Wagner concerning designation of new plat for Tax Lot 203. Douglas Bauer
8/16/2006 Meeting or Teleconference Held Reviewed site status with Peter Beardsley with NORTECH. NORTECH is performing a Phase II Environmental assessment of Lot 1 of Block 1 of Bentley Trust North. Douglas Bauer
8/17/2006 Update or Other Action Issued approval letter to Fountainhead Development for deminmus use of surface water (periodic pumping nto to exceed 500 gallons per minute) from gravel pits on proposed Tracts A & B. Douglas Bauer
8/24/2006 Update or Other Action Reviewed and approved work plan for supplemental ground water investigation on Tax Lot 203 to delineate the ground water contamination in the vicinity of the two gravel pits. Douglas Bauer
9/1/2006 Update or Other Action Received via email from Cynthia Wagner a copy of NORTECH Environmental's Phase I & Phase II Environmental Assessments for Lot 1 of Block 1. No contamination detected in soil and ground water. Douglas Bauer
9/7/2006 Update or Other Action Received field GC results for ground water delineation in vicinity of the two gravel pits. Douglas Bauer
9/19/2006 Update or Other Action Received laboratory results via Alyeska email for ground water sampling in the vicinity of the two gravel pits. Douglas Bauer
9/29/2006 Update or Other Action Received Tax Lot 203 Ground Water Assessment. Douglas Bauer
10/12/2006 Update or Other Action Environement notice and land use restrictions finalized Douglas Bauer
10/13/2006 Update or Other Action Draft ROD forwarded to J. Frechione Douglas Bauer
10/17/2006 Update or Other Action Draft ROD forwarded to Bentley Trust, Alyeska, and J&J Development. Douglas Bauer
11/9/2006 Institutional Control Record Established New plat and deed notice recorded. Douglas Bauer
11/13/2006 Update or Other Action Issued approval letter of surface water use (reiteration of August 17, 2006 approval letter) at the request of Fountainhead Development. Douglas Bauer
11/17/2006 Update or Other Action Draft 2006 Fact Sheet forwarded to J. Frechione. Douglas Bauer
11/24/2006 Update or Other Action Received notice of change of ownership. North Eastern Properties, LLC purchased Tracts A&B of Bentley Trust North Subdivision on 11/17/2006. Notice attached to database. Mr. Timothy T. Cerny at 1501 Queens Way, Fairbanks 99701 and at 907-456-7143 is North Eastern's local representative. Douglas Bauer
11/28/2006 Update or Other Action Comments received from Bentley Trust and Alyeska incorporated into 4th draft of ROD. Douglas Bauer
11/29/2006 Update or Other Action 4th draft of ROD forwarded to Bentley Trust, Alyeska, and J & J Development Douglas Bauer
1/16/2007 Update or Other Action Received comments on 4th draft of ROD from Alyeska and Bentley Trust Douglas Bauer
1/24/2007 Update or Other Action Telephoned Cynthia Wagner with Bentley Trust and Jan Shifflet with Alyeska separately. Informed both that ADEC will issue 4th draft version of ROD. Both parties were comfortable with 4th draft. Douglas Bauer
1/25/2007 Conditional Closure Approved Conditional Closure issued based on results of risk assessment. Institutional Controls were previously established. Douglas Bauer
5/8/2007 Update or Other Action Received a copy of the Fall 2006 ground water monitoring report via email from Jan Shifflet with Alyeska; a hard copy will follow in the mail. Advised that a draft of the long-term ground water monitoring plan as required by the ROD will be available soon. Douglas Bauer
5/18/2007 Update or Other Action Received hard copy of SLR report titled 2006 Ground Water Monitoring Well and Soil Vapor Extraction Decommissioning Report, Former Bentley Trust Property, Fairbanks Alaska dated April 2007. Received SLR report titled 2006 Ground Water Monitoring Report Former Bentley Trust Site, Fairbanks, Alaska dated April 2007 Douglas Bauer
6/5/2007 Update or Other Action Jim Desmond forwarded an email from Derik Price with Fountain Head Development concerning the location of a ground water monitoring well at the southwestern tip of Tract A on the former Tax Lot 203. Derik would like the well repositioned or cut off to grade due to the amount of construction traffic. Jim and Derik was advised to contact Jan Shifflet with Alyeska for resolution since Alyeska is responsible for the long-term ground water monitoring program. Douglas Bauer
6/26/2007 Update or Other Action Received 2007 ground water monitoring work plan via email and hard copy. Douglas Bauer
6/28/2007 Update or Other Action Approved 2007 ground water monitoring work plan. Proposed meeting with Alyeska, UBOC, and ADEC to dicuss development of long-term ground water monitoring plan and transition issues. Douglas Bauer
7/12/2007 Meeting or Teleconference Held Ann Farris and Douglas Bauer with ADEC met with Jan Shifflet with Alyeska, Scott Rose with SLR Alaska, and teleconferenced Cynthia Wagner with Union Bank of California to discuss project manager transition issues and development of long-term ground water monitoring program. Douglas Bauer
6/2/2008 Update or Other Action Staff changed to farris Ann Farris
6/3/2008 Exposure Tracking Model Ranking Initial ranking with ETM completed. Ann Farris
5/23/2012 Institutional Control Compliance Review IC review conducted, changed staff from Ann Farris to IC Unit, attached closure documents, completed closure details, set up reminder system to notify that ongoing requirements need to be considered in the future. Evonne Reese
6/19/2012 Update or Other Action Staff name changed from IC Unit to Rick Bernhardt. Evonne Reese
6/28/2012 Update or Other Action SLR proposes semi-annual groundwater sampling for HVOCs & MNA parameters and conduct well water measurements. They will repair or replace the cracked well casing. Asked SLR to update arial maps & survey MWs to check for frost jacking. Will approve work plan after previous requests have been addressed. Richard Bernhardt
1/29/2013 Update or Other Action Staff name changed from Rick Bernhardt to Jim Fish. 2012 Groundwater Monitoring Report and June 28 Letter Mail to Fairbanks office certified mail # 7012 1010 0003 0389 2966. Annie Ariel
5/31/2013 Update or Other Action Received workplan for 2013 groundwater monitoring Jim Fish
6/6/2013 Update or Other Action Sent a response to proposed work plan for groundwater monitoring asking for more comprehensive MNA evaluation, use of EMDs to confirm degradation of COCs, sampling for 1,4-Dioxane, and determining source of off-site PCE in monitoring well MW-64. (see also file 102.38.123) Jim Fish
7/2/2013 Meeting or Teleconference Held Met with Alyeska and consultants (SLR) to discuss evaluation of MNA and ongoing/future groundwater monitoring efforts for the Bentley former tax lots groundwater plume. Jim Fish
1/9/2014 Update or Other Action Follow-up with consultant on groundwater evaluation - 2013 gw monitoring report with RP Jim Fish
5/27/2014 Meeting or Teleconference Held Met with Alyeska and SLR to discuss groundwater monitoring results and status, Human Health Risk Assessment (HHRA), vapor intrusion, DEC guidance documents released since site closure, the 5-year Review of the Record of Decision, and notification of off-site water well owners. Alyeska is updated the 2006 HHRA with new toxicity values and verfiying RA assumptions. Jim Fish
6/10/2014 Site Characterization Workplan Approved Work plan for 2014 groundwater monitoring approved (2 time/year); recommended 1,4-dioxane be sampled from all wells (onsite & offsite) TCE exceeeds MCL; also recommend EMDs for understanding mechanisms, extent and rate for chlorinated ethene degradation. Provided notice the ADOT will be extendin on-ramp to Johansen Exwy that may impact some monitoring wells. Jim Fish
9/14/2017 Update or Other Action Work plan for vapor intrusion evaluation in off-site portions of the plume received today. Jim Fish

Contaminant Information

Name Level Description Media Comments
Trichloroethene Between Method 2 Migration to Groundwater and Human Health/Ingestion/Inhalation GroundwaterSoil


Control Type

Type Details
Notice of Environmental Contamination (Deed Notice)


Requirements

Description Details
Groundwater Use Restrictions
Advance approval required to transport soil or groundwater off-site.
Other