| Action Date |
Action |
Description |
DEC Staff |
| 11/16/2007 |
Site Added to Database |
Site added to the database. |
Mitzi Read |
| 2/27/2008 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed. |
Ann Farris |
| 10/25/2010 |
Update or Other Action |
Project mgr changed to Tamara Cardona-Marek |
Ann Farris |
| 12/8/2010 |
Meeting or Teleconference Held |
Met with building tenant after receiving Indoor Air results from contractor. TCE levels for indoor air are marginally above the DEC target level for indoor air but well below the ATSDR risk level for chronic exposure. Sub slab samples are above the shallow soil subslab DEC target levels for PCE and TCE. |
Tamara Cardona-Marek |
| 8/29/2012 |
Update or Other Action |
As part of the operations and maintenance of the remediation system, DEC's contractor will conduct a shut down test for the soil vapor extraction system to test the possibility of shutting down the system during winter months. |
Tamara Cardona-Marek |
| 9/19/2013 |
Document, Report, or Work plan Review - other |
DEC received and reviewed work plan for O&M plan and groundwater monitoring in 2013-2014. |
Tamara Cardona-Marek |
| 10/3/2013 |
Update or Other Action |
DEC received payment for the 2013 year (per settlement agreement). |
Tamara Cardona-Marek |
| 10/19/2013 |
Site Visit |
DEC conducted site visit during indoor air sampling at Turner St. |
Tamara Cardona-Marek |
| 2/20/2015 |
Site Visit |
Staff conducted a site visit with our support contractor to meet with the business owners in the source area and become familiar with the site. |
Kim DeRuyter |
| 6/4/2015 |
Document, Report, or Work plan Review - other |
Reviewed and approved a work plan to install vapor monitoring points and collect soil gas down the center of the plume over groundwater with TCE concentrations exceeding the Vapor Intrusion screening levels. |
Kim DeRuyter |
| 7/22/2015 |
Site Visit |
Conducted a site visit to reach out to residents near the vapor monitoring points that will be installed this week. |
Kim DeRuyter |
| 12/9/2015 |
Site Visit |
Site visit with contractor to down-gradient portions of the plume to collect soil gas samples from permanent vapor monitoring points |
Jim Fish |
| 12/14/2016 |
Update or Other Action |
In-line fan installed in Sub-slab depressurization system at Good News Bible and Book Store |
Jim Fish |
| 9/18/2017 |
Site Visit |
Site visit with SPAR Director to view & explain remedial systems and successful transition to in-line fan technology |
Jim Fish |
| 5/10/2018 |
Update or Other Action |
Received draft GROUNDWATER MONITORING, SOIL GAS MONITORING, WELL INVENTORY, REMEDIAL SYSTEM EVALUATION, AND MITIGATION SYSTEM OPERATIONS AND MAINTENANCE REPORT from contractor |
Jim Fish |
| 3/5/2019 |
Update or Other Action |
NTP awarded to Ahtna Engineering Services for periodic inspection of the in-line fan SSD operation; for modification of the SVE to operate passively; and groundwater monitoring in the source zone area. |
Jim Fish |
| 4/26/2019 |
Update or Other Action |
Reviewed & approved work plan from Term Contractor for remedial system modification (transition to passive SVE) and source area groundwater monitoring. |
Jim Fish |
| 5/8/2019 |
Update or Other Action |
Modification of SVE system from active to passive begun today. |
Jim Fish |
| 2/5/2021 |
Document, Report, or Work plan Review - other |
Received 2020 contractor report for Gaffney West SSd/SVE system maintenance & operations, and Gaffney East/West groundwater sampling |
Jim Fish |
| 3/17/2021 |
Update or Other Action |
Received FY20-21 final report from contractor |
Jim Fish |
| 11/15/2021 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 75490 dry cleaner. |
Jim Fish |
| 2/15/2022 |
Site Characterization Report Approved |
Recieved 2021 Gaffney Road Remediation and Monitoring Report.
The modified SSD system continues to maintain a negative pressure envelope beneath GNBBS. PCE and TCE concentrations in source area groundwater monitoring wells MW-9, MW-29R, and TW-46 continue to exceed ADEC groundwater cleanup levels. Contractor recommends semiannual SSD system O&M visits to ensure the system maintains a negative pressure envelope beneath GNBBS. Source area monitoring wells MW-9, MW-29R, and TW-46 should be sampled again in late summer of 2022. A trend analysis can then be completed on results to observe the effect of modifying the SVE system from active to passive operation. |
Jim Fish |
| 6/23/2022 |
Update or Other Action |
Contractor decommissioned former monitoring wells (MW8, MW29M, MW29D, and TW-46), as well as soil vapor monitoring points (VMP-1, VMP-2, VMP-3, SG-05, SG-14, and pilot test well SVE-1) behind the GNBBS today. |
Jim Fish |
| 6/30/2022 |
Update or Other Action |
Contractor performed semi-annual SSD Operations & Maintenance check at GNBBS. System flow rates and vacuums appeared consistent with past events. |
Jim Fish |
| 8/10/2022 |
Update or Other Action |
Contractor trimmed about 10” off of two SVE well risers and reset the well covers today. |
Jim Fish |
| 10/17/2022 |
Update or Other Action |
Approved a work from ADOT&PF for 33 soil borings in ROW associated with Cushman St and Airport Way and a future road improvement project. Samples for VOCs will be collected at 3-foot and 10-foot depth intervals will fill data gaps and inform development of a Quality Assurance Project Plan (QAPP) for the Airport Way/Cushman Street Intersection Reconstruction Project, administered by the Alaska Department of Transportation (ADOT), and anticipated to begin during 2023. because of the likelihood of encountering contamination categorized as F-listed waste from former dry cleaners (under the Resource Conservation and Recovery Act or RCRA), excess soils from borings will be containerized and stored in a satellite accumulation area. A RCRA Hazardous Waste Generator status and site I.D. number from the U. S. Environmental Protection Agency (USEPA), and analytical results from soils, will be used to determine proper waste disposal under RCRA. |
Jim Fish |
| 10/31/2022 |
Update or Other Action |
Received groundwater sampling results from contractor for September 2022; source area wells (MW-9 and TW-46) still contain PCE & TCE above groundwater cleanup levels (range 178-227 and 3.7-10.6 ppb, respectively), |
Jim Fish |
| 5/1/2023 |
Long Term Monitoring Workplan or Report Review |
Final LTM Work Plan received and approved for FY2023 |
Jim Fish |
| 10/13/2023 |
Update or Other Action |
Sent private well sampling results to residents |
Jim Fish |
| 11/16/2023 |
Update or Other Action |
Sent private well sampling results to residents |
Jim Fish |
