| Action Date |
Action |
Description |
DEC Staff |
| 9/27/2000 |
Meeting or Teleconference Held |
CERCLA site screening conducted by Evans given to EPA this date during a meeting in Juneau. |
Bill Janes |
| 10/13/2000 |
Site Added to Database |
Site screening by Evans. |
Bruce Wanstall |
| 10/13/2000 |
Site Ranked Using the AHRM |
Initial ranking. |
Bruce Wanstall |
| 6/30/2002 |
Update or Other Action |
Recieved Report from Ecology and Environment detailing results from Historic Land Use Study done for area upgradient of the Fairview Manor Wells. The most likely upgradient Sources are an old gas station at Cowles and Airport Rd and a dry cleaners in Shoppers forum. |
Jeff Conn |
| 7/10/2002 |
GIS Position Updated |
Plotted latitude and longitude coordinates and found them to be acceptable for associated property or address. |
Heather Goldman |
| 9/28/2007 |
Site Characterization Report Approved |
Oasis Environmental submitted the report "Former Weeks Field Airstrip, Areawide Site Characterization". This report was contracted by DEC to investigate potential contaminant sources in the area of the former Weeks Airfield. The investigation identified PCE above soil cleanup levels (up to 7.4 mg/kg) between 3 to 15 feet deep along the northern boundary of the Shopper's Forum property. PCE is also present above groundwater cleanup levels in temporary wells TB-25, TB-27, TB-32, and TB-33. Solvents were found between 14 and 48 feet deep in the groundwater. |
Janice Wiegers |
| 6/12/2008 |
Update or Other Action |
Oasis submitted report on land use and ownership for former Weeks Field Airstrip. The report is based on a title search conducted by Fairbanks Title Agency. Fairbanks Cleaners and Linen Supply is reported to have been located on the property and was probably located in the Shoppers Forum Annex. The Norge Laundromat may have also been located in the mall building. Ben Martich of Oasis noted that air photos in the E&E report show a building in the 1960's located near where PCE- and TCE-contaminated soil was found. Tice Electric owned the land when this building was present. |
Janice Wiegers |
| 6/4/2009 |
Potentially Responsible Party/State Interest Letter |
Sent out PRP letters to Gavora Inc., City of Fairbanks, and Tice Electric Company. Courtesy calls were made to City of Fairbanks on 6/3, Tice Electric on 6/4, and Gavora on 6/12. |
Janice Wiegers |
| 6/30/2009 |
Update or Other Action |
Staff from the City of Fairbanks, currently considered an RP, picked up a copy of the Brownfield Assessment Report and provided additional documentation regarding the property (including a copy of the lease agreement). |
Tamara Cardona-Marek |
| 5/25/2010 |
Update or Other Action |
DEC sent letter to Gavora in response to his letter responding to PRP letter. |
Tamara Cardona-Marek |
| 5/25/2010 |
Exposure Tracking Model Ranking |
Initial ranking with ETM completed for source area id: 78886 name: dry cleaning activities |
Tamara Cardona-Marek |
| 6/15/2010 |
Meeting or Teleconference Held |
DEC received a call from Gavora to discuss site characterization for the Shoppers Forum site. Gavora has hired Shannon and Wilson to conduct the investigation. |
Tamara Cardona-Marek |
| 7/1/2010 |
Document, Report, or Work plan Review - other |
Shannon and Wilson submitted a work plan for site characterization. Work plan proposes the installation of 4 temporary wells and 1 permanent well. It also proposes to collect soil vapor samples. |
Tamara Cardona-Marek |
| 9/1/2010 |
Document, Report, or Work plan Review - other |
DEC received and reviewed the Site Characterization Report from Shannon and Wilson. Soil and groundwater contamination with PCE and TCE is present at the site above cleanup levels. Soil gas around annex building is 3 orders of magnitude above the shallow gas target levels for PCE. Soil gas around the larger building on the west side of the property is two oders of magnitude above traget levels. Additional site characterization and further evaluation of the vapor intrusion pathway is required. |
Tamara Cardona-Marek |
| 10/11/2010 |
Update or Other Action |
DEC sent letter to responsible party requesting response to DEC letter from September 2010. |
Tamara Cardona-Marek |
| 10/22/2010 |
Meeting or Teleconference Held |
DEC met with Shannon and Wilson to discuss next steps of the site characterization. Meeting has been documented on a letter sent to Gavora. |
Tamara Cardona-Marek |
| 5/20/2011 |
Document, Report, or Work plan Review - other |
DEC received report for vapor intrusion assessment at Shopper's Forum Annex building. Levels of chlorinated solvents in indoor air inside the spaces tested resulted in concentrations above the DEC target levels. Subslab samples resulted in PCE and TCE above the shallow soil gas target levels. |
Tamara Cardona-Marek |
| 7/25/2011 |
Update or Other Action |
Aurora Energy will be installing a utility line south of the Annex building of the Shopper's Forum Mall (Kennicott Ave). A work plan (QAPP) has been submitted by Travis/Peterson to screen soil in this area during the excavation work and manage potential excess soil as RCRA waste. Work plan was submitted to EPA and DEC and comments from both agencies were incorporated. Work is expected to begin the first week of August 2011. |
Tamara Cardona-Marek |
| 7/29/2011 |
Update or Other Action |
DEC sent correspondence to responsible party requiring tenant notification and a meeting to discuss further site characterization and mitigation. |
Tamara Cardona-Marek |
| 10/7/2011 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 78886 dry cleaning activities. |
Tamara Cardona-Marek |
| 10/28/2011 |
Update or Other Action |
DEC mailed letters to tenants of the Shoppers Forum Annex building to notify them of the results of the indoor air sampling and vapor intrusion assessment. |
Tamara Cardona-Marek |
| 11/30/2011 |
Update or Other Action |
DEC requested from Golden Heart Utilities information on the sewer line behind Shopper's Forum Annex building and assistance in sampling the area to determine if chlorinated solvents have potentially leaked from the wood stave sewer line. |
Tamara Cardona-Marek |
| 11/30/2011 |
Document, Report, or Work plan Review - other |
DEC received from Shannon and Wilson a brief sampling plan for additional vapor intrusion assessment at the Shopper's Forum Mall property. |
Tamara Cardona-Marek |
| 2/8/2012 |
Site Visit |
DEC conducted a site visit during the vapor intrusion sampling event at the annex buildings and the main mall building. |
Tamara Cardona-Marek |
| 4/30/2012 |
Site Visit |
DEC visited the site with a representative from the Department of Health. |
Tamara Cardona-Marek |
| 4/30/2012 |
Meeting or Teleconference Held |
DEC met with Gavora and Shannon and Wilson to dicuss the recent results of indoor air sampling and the next steps. DEC offered to loan Gavora an air scrubber for use at the location with highest indoor air levels. Gavora plans to evaluate HVAC system in the Annex building and ventilate the crawlspace to improve indoor air conditions. |
Tamara Cardona-Marek |
| 5/30/2012 |
Update or Other Action |
DEC received an update from Shannon and Wilson. They are working on a proposal for source delineation. Gavora does not wish to borrow the air scrubber and will work on improving ventilation in the buildings. |
Tamara Cardona-Marek |
| 7/24/2012 |
Site Visit |
DEC and Department of Health conducted a site visit to the commercial spaces at the site to interview occupants and provide information regarding vapor intrusion. |
Tamara Cardona-Marek |
| 7/25/2012 |
Site Visit |
DEC placed an air scrubber in the office space area at one of the commercial spaces in the Shopper's Forum Annex to reduce indoor air concentrations of chlorinated solvents in this area. |
Tamara Cardona-Marek |
| 8/14/2012 |
Site Visit |
DEC visited site with QA/QC officer as part of several site visits within the Fairbanks area. |
Tamara Cardona-Marek |
| 8/30/2012 |
Site Visit |
DEC visited the site (restaurant space) and collected an air sample with a summa canister to verify indoor air concentrations in the office area where an air scrubber has been in place and running for about a month. |
Tamara Cardona-Marek |
| 11/1/2012 |
Update or Other Action |
DEC visited the site (restaurant space) and collected a second air sample with a summa canister to verify indoor air concentrations in the office area where an air scrubber has been in place and running. |
Tamara Cardona-Marek |
| 1/23/2013 |
Meeting or Teleconference Held |
DEC met with Gavora regarding the deadlines missed for the submission of site characterization work plan, summary of mitigation actions completed, etc. |
Tamara Cardona-Marek |
| 1/23/2013 |
Update or Other Action |
DEC received a work plan for additional groundwater monitoring , indoor air monitoring, and a summary of the activities completed in the building for mitigation. |
Tamara Cardona-Marek |
| 1/28/2013 |
Enforcement Action |
DEC issued a Notice of Violation for: Failure to comply with 18 AAC 75.325 (f)(1)(C and D) : “completion of cleanup in a period of time that the department determines to be protective of human health, safety, and welfare, and of the environment” and “prevent, eliminate, or minimize potential adverse impacts to human health, safety, and welfare, and to the environment, onsite and offsite, from any hazardous substance remaining at the site”. |
Tamara Cardona-Marek |
| 2/21/2013 |
Site Visit |
Met with Nim Ha from the Alaska Division of Public Health and two of the tenants of the annex building to go over the Health Consultation report authored by Public Health. The Health Consultation evaluates health risks from concentrations of PCE, TCE, DCE, and benzene in indoor air. |
Janice Wiegers |
| 10/11/2013 |
Update or Other Action |
DHSS updated the exposure risks based on the most recent air monitoring data and recommends the installation of a permanent mitigation system. |
Tamara Cardona-Marek |
| 1/8/2014 |
Update or Other Action |
Site symbol visually adjusted using ArcGIS and documents from file. 1/8/13; MLB. 64.836016, -147.741176. |
Michelle Barnes |
| 1/9/2014 |
Update or Other Action |
DEC received 2013 Air Monitoring Report. A sub slab depressurization system was installed at the Miguel's restaurant in August -September 2013 and started operating in October 2013. Indoor air concentrations of PCE and TCE are currently below the indoor air target levels. |
Tamara Cardona-Marek |
| 4/2/2014 |
Meeting or Teleconference Held |
DEC met with potentially responsible parties and their attorneys to discuss next steps needed at the site, including downgradient delineation of contamination, identification of data gaps, and remediation. It was suggested that a thorough file review of downgradient contaminated sites (Weeksfield and Fairview Manor) may help identify data gaps. |
Tamara Cardona-Marek |
| 5/23/2014 |
Site Visit |
Removed the air scrubber from Miguel's restaurant. Indoor air levels of PCE and TCE have been below the DEC indoor air target levels during the last two monitoring events. |
Tamara Cardona-Marek |
| 10/29/2014 |
Update or Other Action |
Staff named changed from Cardona-Marek to DeRuyter. |
Evonne Reese |
| 1/12/2015 |
Meeting or Teleconference Held |
CS staff met with the responsible person's contractor to review and discuss current and historic data and future monitoring plans. The data indicates that the mitigation systems have greatly improved indoor air conditions. Staff emphasized the need for further site characterization both on and off site. |
Kim DeRuyter |
| 11/18/2016 |
Update or Other Action |
DEC letter sent to Utility Services of Alaska and the City of Fairbanks requesting an investigation along the sewer main on Kennicott Avenue to determine if solvent contamination in the sewer line has leaked into the environment and spread contamination in soil or groundwater. Deadline for response was set for January 15, 2017. |
Laura Jacobs |
| 11/18/2016 |
Update or Other Action |
DEC sent letter to Gavora, Inc. requesting air monitoring report for sub-slab depressurization system installed in the Annex Building. Air monitoring was expected to occur in January, April and July of 2014, but DEC has not received a report describing the results for each monitoring event. A deadline of December 15, 2016 was given. |
Laura Jacobs |
| 11/28/2016 |
Update or Other Action |
DEC sent a letter to Gavora, Inc. and the City of Fairbanks notifying both parties of actions needed to move forward with site cleanup and characterization and requesting a work plan by January 31, 2017. |
Laura Jacobs |
| 1/13/2017 |
Update or Other Action |
DEC received a reply from the Utility Services of Alaska, Inc. which is a parent company of Golden Heart Utilities, regarding the DEC sent letter November 18, 2016 that requested the City and GHU conduct an investigation along the sewer main adjacent to the Shopper's Forum Mall. The letter states the Utility has no reason to believe that the sewer mains contribute to contamination on the site, and decline to conduct the sewer line investigation. |
Laura Jacobs |
| 1/16/2017 |
Update or Other Action |
DEC received a letter response from the City of Fairbanks stating the requested investigation of the sewer line is not warranted. |
Laura Jacobs |
| 1/26/2017 |
Document, Report, or Work plan Review - other |
DEC reviewed the letter report "Crawlspace and Indoor-Air Sampling, Shopper's Forum Mall Annex, 1255 Airport Way, Fairbanks, Alaska". The report documented previous air sampling events at the Shopper’s Forum Mall Annex, included results of the last crawlspace and indoor-air sampling event in February 2014, and described the plan to collect another two rounds of indoor-air samples with the next sample period occurring in late December 2016 or January 2017. Six samples were collected from two crawlspaces and four indoor locations. Sample results showed that PCE was present but at concentrations below DEC's Indoor-Air or Shallow Gas Target Levels, and TCE was not found. Recommended continuation of long-term monitoring of indoor-air at the Annex for two more quarterly sample events. |
Laura Jacobs |
| 1/27/2017 |
Update or Other Action |
DEC received a letter response from the legal counsel to the City of Fairbanks regarding the DEC request of November 2016 to continue efforts to characterize the site and consider necessary cleanup options. The letter indicated the potential responsible parties are involved in a lawsuit. |
Laura Jacobs |
| 2/8/2017 |
Document, Report, or Work plan Review - other |
DEC sent letter to Gavora, Inc. regarding review of the Crawlspace and Indoor Air Sampling Report dated May 14, 2014 and submitted on December 2, 2016. Shannon & Wilson collected air samples from two crawlspace locations and four indoor locations to evaluate effectiveness of the sub-slab depressurization system installed in 2013. A portable GAC filter system was left running in the Miguels restaurant, which caused the data from this location to be biased low. The report indicated that two additional quarterly monitoring events are planned. DEC concurred with the report. |
Laura Jacobs |
| 3/31/2017 |
Update or Other Action |
DEC sent Mr. Gavora a compliance notice after not receiving additional site characterization. Requested a work plan by April 27, 2017. |
Laura Jacobs |
| 7/13/2017 |
Enforcement Action |
DEC sent a Notice of Violation letter to Gavora indicating he had not complied with the January 31, 2017 deadline for a work plan to complete additional activities to delineate the nature and extent of contaminants of concern. |
Laura Jacobs |
| 7/17/2017 |
Update or Other Action |
DEC received a copy of the May 2017 Indoor Air sample event report from Shannon & Wilson. Discussions regarding the NOV are planned for a meeting by telephone. |
Laura Jacobs |
| 8/9/2017 |
Update or Other Action |
DEC received a letter from the City of Fairbanks attorney outlining the details for how the City of Fairbanks will be involved with site characterization efforts and cleanup. The City will take the lead role in remediation efforts for the overall site, while the air sample efforts in the Annex Building will continue to be coordinated by Gavora. |
Laura Jacobs |
| 8/16/2017 |
Update or Other Action |
Department of Law sent attorney for City of Fairbanks a reply to announcement of their involvement with site characterization and cleanup activities and gave a September 16 deadline for a schedule of work. |
Laura Jacobs |
| 9/28/2017 |
Meeting or Teleconference Held |
DEC met with Responsible Party's consultant, Shannon & Wilson, to discuss what needs to happen to proceed with indoor-air sampling at Annex, and groundwater monitoring and site characterization of site. Discussed request for deadline extension for work plan for the characterization work. |
Laura Jacobs |
| 10/5/2017 |
Update or Other Action |
DEC sent a letter to the City of Fairbanks and Gavora, Inc. in response to their requests for deadline extensions. Work plans to achieve site characterization both on site and off site are due in January 30, 2018. Indoor-air monitoring will occur after DEC and the consultant have visited the Annex to measure barometric pressures and document the current status of air handling systems in the building. The July 2013 work plan will then be amended and made current to reflect the proposed October sample period, followed by three quarterly monitoring events. |
Laura Jacobs |
| 4/10/2018 |
Document, Report, or Work plan Review - other |
DEC staff received the Sampling and Analysis Plan (Work Plan) for "Shoppers Forum Chlorinated Solvent Investigation, 1531-04" to conduct soil gas survey on the Shopper's Forum site. An email comment letter was sent requesting revisions on June 7, 2018. |
Laura Jacobs |
| 5/11/2018 |
Document, Report, or Work plan Review - other |
DEC staff received the February 26, 2018 report "January 2018 Indoor-Air and Crawlspace-Air Sampling Summary Report, Shopper's Forum Mall" and the May 3, 2018 report "April 2018 Indoor-Air and Crawlspace-Air Sampling Summary Report, Shopper's Forum Mall" on May 11, 2018 from Shannon & Wilson, Inc for the requested quarterly monitoring effort. Sample results were consistent with past monitoring events. |
Laura Jacobs |
| 8/7/2018 |
Document, Report, or Work plan Review - other |
ADEC staff reviewed the work plan "Sampling and Analysis Plan for Shoppers Forum Chlorinated Solvent Investigation, 1534-04, Version 2.0". Comments were sent to the QEP for additional changes/additions. |
Laura Jacobs |
| 1/31/2019 |
Document, Report, or Work plan Review - other |
ADEC staff reviewed Version 2.1 of "Sampling and Analysis Plan for Shoppers Forum Chlorinated Solvent Investigation" and approved by email, to be followed by an approval on letterhead. |
Laura Jacobs |
| 5/20/2019 |
Offsite Soil or Groundwater Disposal Approved |
DEC staff reviewed and signed an approval to transport hazardous materials from the site to a hazardous waste facility in Tacoma, Washington. |
Laura Jacobs |
| 1/8/2020 |
Document, Report, or Work plan Review - other |
ADEC staff requested a long-term maintenance and operations plan to be submitted review and approval by February 28, based upon receipt of four quarterly air monitoring reports that showed successful vapor intrusion mitigation efforts. |
Laura Jacobs |
| 1/14/2020 |
Update or Other Action |
ADEC staff received the "September 2019 Indoor-Air and Crawlspace-Air Sampling Summary Report, Shopper's Forum Mall, ADEC File No. 102.38.100" report that will be repeated annually until the solvent plume from historic on site dry cleaners is fully characterized and mitigated. |
Laura Jacobs |
| 1/28/2020 |
Update or Other Action |
ADEC staff received the Shopper's Forum Site Characterization Report for soil gas screening sample results at 66 locations across the Shopper's Forum property. |
Laura Jacobs |
| 2/26/2020 |
Document, Report, or Work plan Review - other |
ADEC reviewed the Site Characterization Report, Version 1.0, Shoppers Forum Mall Chlorinated Solvent Investigation, Hazard ID 3682 received on January 28, 2020, and authored by Travis/Peterson Environmental Consulting, Inc. Field screening information was collected using passive soil gas screening devices placed across the Shopper's Forum property in 67 locations laid out in a sample grid. The screening results confirmed dry cleaning solvent contamination in three locations where historic dry cleaner businesses operated historically. Petroleum contamination was also detected. Screening results are meant to detect the presence but not accurately determine the amount of contamination. |
Laura Jacobs |
| 4/6/2020 |
Document, Report, or Work plan Review - other |
ADEC staff in coordination with EPA staff completed a review of the Sampling and Analysis Plan for Kennicott Sewer Replacement (SAP) received by ADEC March 16, 2020. The SAP proposes a soil management plan to mitigate potentially contaminated soils along a 2,000 square foot trench excavated to replace the sanitary sewer line as proposed by Utility Services of Alaska (USA). |
Laura Jacobs |
| 7/9/2020 |
Document, Report, or Work plan Review - other |
ADEC staff reviewed the "Operation and Maintenance Plan, Vapor Intrusion Mitigation System" for the Annex building on the Shopper's Forum site. Multiple systems continue to operate to reduce indoor air exposure to volatile contaminants associated with historic dry cleaning operations. Long-term maintenance is necessary until contaminant levels are proven to be below health based target levels. ADEC forwarded comments. |
Laura Jacobs |
| 12/28/2020 |
Workplan Requested |
ADEC sent the City of Fairbanks a letter requesting site characterization work to be conducted on site to determine extents of contaminants in soil and groundwater. Deadline for work plan submittal is February 26, 2021. |
Laura Jacobs |
| 1/4/2021 |
Document, Report, or Work plan Review - other |
DEC staff reviewed the report "Groundwater Monitoring Well Installation and Sampling" submitted to our office October 16, 2020. Two groundwater monitoring wells were installed to sample groundwater in the right-of-way that will be excavated to replace the Kennicott Avenue sewer line. Because of the depth of the sewer line will be below the level of groundwater, a dewatering plan was proposed. The presence of chlorinated solvents in the groundwater required that samples be collected and shown to not have the contaminants of concern in levels that would require excess water be handled in a manner to not further spread contamination. DEC coordinated with EPA's RCRA program for this action. Groundwater from the well MW-J5 closest to the Annex, on the corner of the Shopper's Forum building had detections of benzene; cis-1,2-dichloroethene; tetrachloroethene; and levels of trichloroethene above the groundwater cleanup level at 6.63 ug/L. |
Laura Jacobs |
| 4/16/2021 |
Document, Report, or Work plan Review - other |
DEC reviewed and issued comments for the Draft 2021 Site Characterization work plan submitted to ADEC April 12, 2021. Proposed site characterization efforts will occur after the City of Fairbanks DEC coordinated with EPA's RCRA program. Proposed site characterization efforts include vapor intrusion studies within the crawlspace of the Gavora Mall and Planet Fitness buildings, groundwater samples from temporary and permanent groundwater monitoring wells installed across the property and to the north of Airport Way and to the south of Kennecott Avenue, and soil borings across the site to determine vertical extents of contaminants. |
Laura Jacobs |
| 8/4/2021 |
Document, Report, or Work plan Review - other |
ADEC reviewed and approved a revised version of the October 2020 Indoor Air and Crawlspace Air Sampling Summary Report Rev01, Shopper's Forum Mall Annex, Fairbanks, Alaska. This revised report includes the results from yearly air sampling, annual and quarterly inspection of the remedial vapor mitigation system as part of the Operation and Maintenance Plan approved by ADEC July 9, 2020. During inspection, the vapor barrier was found to be breached in a couple of different areas and was repaired a short time later. As a result of the discovered breach, ADEC requested the RP install signs in each of the tenant's crawlspace areas reminding them of the importance of maintaining the vapor barrier. |
Laura Jacobs |
| 12/30/2021 |
Update or Other Action |
The Supreme Court of Alaska issued their opinion in the Gavora, Inc. v. City of Fairbanks case by finding the ruling of the Superior Court is affirmed. |
Laura Jacobs |
| 1/7/2022 |
Meeting or Teleconference Held |
A meeting was held with the City's consultant to discuss findings from site characterization work as described in the Draft Site Characterization Report Shopper's Forum Mall Fairbanks Alaska, submitted to DEC on January 5, 2022. |
Laura Jacobs |
| 1/27/2022 |
Document, Report, or Work plan Review - other |
Draft 2021 Site Characterization Report was received by DEC staff January 6, 2022. The draft report included site characterization results from across the property from soil borings, groundwater samples from temporary and monitoring wells (in single wells and well nests), vapor intrusion samples from three locations within the Shopper's Forum Mall. The draft report is the beginning of site characterization over the entire property to understand contamination from several historic drycleaning operations over a span of roughly fifty years. |
Laura Jacobs |
| 3/29/2022 |
Meeting or Teleconference Held |
Meeting was held with Shannon & Wilson staff to discuss DEC comments to the first version of the 2021 site characterization report, and Shannon & Wilson's responses. The boundaries of the groundwater contaminant plume are roughly defined along the south(upgradient) and east sides. The west boundary is not well defined, and the north(downgradient) extent of the plume has not been defined. There was general agreement of proceeding to a work plan with issues in mind sometime in the next months. A letter approval was issued for the Final 2021 Site Characterization Report on 3-30-22. |
Laura Jacobs |
| 10/4/2022 |
Document, Report, or Work plan Review - other |
DEC was sent a request to reduce in indoor air sample events to once every two years at one sample per tenant space for indoor air and one for crawlspace air. The contaminants of concern PCE and TCE have been detected less than the DEC target level (in the case of PCE) or not detected (in the case of TCE) in the air samples since October 2020. The frequency of the annual building walk-through, pressure differential testing, and O&M Plan compliance reporting will remain unchanged. The responsible party will still submit monthly O&M compliance records to DEC annually. The fall 2022 indoor sample event will not occur, and instead will be completed in 2023. |
Laura Jacobs |
| 10/4/2022 |
Site Characterization Workplan Approved |
DEC approved changing frequency of indoor air sampling for the Shopper's Forum Annex to once every two years and reducing sample locations to one sample in every tenant space and one crawlspace sample during the 24-month sample interval. Next sample event and reported results are due in Fall of 2023. |
Laura Jacobs |
| 1/10/2023 |
Workplan Requested |
A work plan to continue site characterization was requested with a response deadline of January 30, 2023. Both responsible parties were sent the request. A deadline was required to ensure investigations of vapor intrusion happen during the remaining winter months. |
Laura Jacobs |
| 3/10/2023 |
Document, Report, or Work plan Review - other |
Comments were sent to the RP for the work plan addendum submitted for review on January 30, 2023. Negotiations continue for placement of site characterization efforts. |
Laura Jacobs |
| 6/1/2023 |
Document, Report, or Work plan Review - other |
The revised work plan addendum (Rev01) received May 26, 2023 was approved with the request that soil gas probes be located within the vadose zone and not affected by the capillary fringe, and that soil gas results be compared to residential target levels. This effort includes collecting groundwater samples to the delineate the west, north, and east extent of the groundwater plume, collect groundwater samples from subset of existing monitoring wells, and collect soil-gas samples from select locations to evaluate potential for vapor intrusion. Seven temporary well point pairs will be sampled in addition to four existing monitoring wells. Five soil-gas probes will be installed near select residential and commercial buildings in the potential path of the plume. |
Laura Jacobs |
| 1/2/2024 |
Document, Report, or Work plan Review - other |
The biennial air sampling report was submitted to the DEC office December 1, 2023 for continued monitoring of indoor- and crawlspace-air sampling and to confirm the efficacy of the sub-slab depressurization system. A maintenance and operation plan approved in 2020 was followed for this work. Levels of tetrachloroethene (PCE), trichloroethene (TCE), and related compounds were sampled for in crawlspace air and indoor air. The biennial inspection and sample collection was for indoor air samples within the three tenant locations of the Annex, crawlspace air samples below one tenant, and an annual inspection of the sub-slab differential pressure, and screening walkthrough of the building. PCE was detected in each sample at concentrations less than the DEC commercial indoor target levels. All other analytes were not detected at their respective laboratory reporting limits. The differential pressure measurements indicated there is not significant movement of air from the sub-slab into the Annex units. The report was approved. |
Laura Jacobs |
